path: root/libs/libcurl/docs/CHANGES

                                  _   _ ____  _
                              ___| | | |  _ \| |
                             / __| | | | |_) | |
                            | (__| |_| |  _ <| |___
                             \___|\___/|_| \_\_____|

                                  Changelog

Version 8.7.1 (27 Mar 2024)

Daniel Stenberg (27 Mar 2024)

- RELEASE-PROCEDURE: remove old release dates, add new pending ones

Version 8.7.0 (27 Mar 2024)

Daniel Stenberg (27 Mar 2024)

- RELEASE-NOTES: synced

  curl 8.7.0 release

- THANKS: new contributors from the 8.7.0 release

- CURLOPT_POSTFIELDS.md: used for MQTT as well

  Closes #13189

- http: remove stale comment about rewindbeforesend

  ... because that struct field exists no more.

  Follow-up to 14bcea074a782272.

  Closes #13187

- DISTROS: add document with distro pointers

  Lots of organizations distribute curl packages to end users. This is a
  collection of pointers to where to learn more about curl on and with
  each distro.

  Assisted-by: Alan Coopersmith
  Assisted-by: Andrew Kaster
  Assisted-by: Andy Fiddaman
  Assisted-by: Arjan van de Ven
  Assisted-by: Brian Clemens
  Assisted-by: chrysos349 on github
  Assisted-by: Dan Fandrich
  Assisted-by: Dan McDonald
  Assisted-by: Gaelan Steele
  Assisted-by: graywolf on github
  Assisted-by: Jan Macku
  Assisted-by: John Marshall
  Assisted-by: Jonathan Perkin
  Assisted-by: Kevin Daudt
  Assisted-by: Marcus Müller
  Assisted-by: Michał Górny
  Assisted-by: Outvi V
  Assisted-by: Ross Burton
  Assisted-by: Sean Molenaar
  Assisted-by: Till Wegmüller
  Assisted-by: Viktor Szakats
  Assisted-by: Winni Neessen

  Closes #13178

Fabian Keil (25 Mar 2024)

- wolfSSL: do not call the stub function wolfSSL_BIO_set_init()

  Calling the function isn't necessary and causes the build
  to fail when wolfSSL has been compiled with NO_WOLFSSL_STUB:

       Making all in opts
         CCLD     curl
       ld: error: undefined symbol: wolfSSL_BIO_set_init
       >>> referenced by wolfssl.c:235 (vtls/wolfssl.c:235)
       >>>               libcurl_la-wolfssl.o:(wolfssl_bio_cf_create) in archiv
  e ../lib/.libs/libcurl.a
       cc: error: linker command failed with exit code 1 (use -v to see invocat
  ion)
       *** Error code 1

  Closes #13164

Daniel Stenberg (25 Mar 2024)

- cmdline-opts: shorter help texts

  In an effort to increase the readability of the "--help all" output on
  narrow (80 column) terminals.

  Co-authored-by: Jay Satiro

  Closes #13169

Matt Jolly (25 Mar 2024)

- curl-rustls.m4: add pkg-config support to rustls detection

  Based on the existing openssl pkg-config detection, this commit tries to
  use pkg-config to find `rustls` then falls back to the current approach
  if that fails.

  We use the following logic:

  - if no path is provided, just use pkg-config, if it's not there we have
    a problem!
  - if a path is provided, try pkg-config
    + if pkg-config fails, try and find rustls directly

  Closes #13179

Mohammadreza Hendiani (25 Mar 2024)

- TODO: update 13.11 with more information

  Closes #13173

Daniel Stenberg (23 Mar 2024)

- docs/libcurl: generate PROTOCOLS from meta-data

  Remove the PROTOCOLS section from the source files completely and
  instead generate them based on the header data in the curldown files.

  It also generates TLS backend information for options marked for TLS as
  protocol.

  Closes #13175

- CURLMOPT_MAX*: mention what happens if changed mid-transfer

  For CURLMOPT_MAXCONNECTS and CURLMOPT_MAX_HOST_CONNECTIONS

  Ref: #13158
  Closes #13176

- docs/libcurl: add TLS backend info for all TLS options

  All man pages that are listed to be for TLS now must also specify
  exactly what TLS backends the option works for, or use All if they all
  work.

  cd2nroff makes sure this is done and that the listed backends exist.

  Closes #13168

- docs/libcurl: cleanups

  - CURLINFO_TLS_SESSION.md: remove mention of NSS
  - CURLINFO_TLS_SSL_PTR.md: remove NSS leftover
  - CURLOPT_CAINFO.md: drop mention of backends not supporting this
  - CURLOPT_CAPATH.md: wolfSSL also supports this

  Closes #13166

- docs: make each libcurl man specify protocol(s)

  The mandatory header now has a mandatory list of protocols for which the
  manpage is relevant.

  Most man pages already has a "PROTOCOLS" section, but this introduces a
  stricter way to specify the relevant protocols.

  cd2nroff verifies that at least one protocol is mentioned (which can be
  `*`).

  This information is not used just yet, but A) the PROTOCOLS section can
  now instead get generated and get a unified wording across all manpages
  and B) this allows us to more reliably filter/search for protocol
  specific manpages/options.

  Closes #13166

Stefan Eissing (21 Mar 2024)

- http2, http3: only return CURLE_PARTIAL_FILE when bytes were received

  - should resolve spurious pytest failures when stream were reset
    right after response header were received

  Clsoes #13151

- http: separate response parsing from response action

  - move code that triggers on end-of-response into separate function from
    parsing
  - simplify some headp/headerlen usage
  - add `httpversion` to SingleRequest to indicate the version of the
    current response

  Closes #13134

Daniel Stenberg (21 Mar 2024)

- http2: remove the third (unused) argument from http2_data_done()

  Closes #13154

- RELEASE-NOTES: synced

Evgeny Grin (Karlson2k) (21 Mar 2024)

- RELEASE-NOTES: corrected

  Corrected link for item 118

  Closes #13157

Daniel Stenberg (19 Mar 2024)

- CURLOPT_INTERFACE.md: remove spurious amp, add see-also

  Closes #13149

Stefan Eissing (19 Mar 2024)

- http: improve response header handling, save cpu cycles

  Saving some cpu cycles in http response header processing:
  - pass the length of the header line along
  - use string constant sizeof() instead of strlen()
  - check line length if prefix is possible
  - switch on first header char to limit checks

  Closes #13143

Daniel Stenberg (19 Mar 2024)

- tool_getparam: accept a blank -w ""

  Added test 468 to verify.

  Regression from 07bcae89d5d00 (shipped in 8.6.0)
  Reported-by: Thomas Pyle
  Fixes #13144
  Closes #13145

Evgeny Grin (Karlson2k) (18 Mar 2024)

- curl_sha512_256: work around a NetBSD bug

  Based on Michael Kaufmann analysis and suggestion

  Closes #13133

Stefan Eissing (18 Mar 2024)

- http: expect 100 rework

  Move all handling of HTTP's `Expect: 100-continue` feature into a client
  reader. Add sending flag `KEEP_SEND_TIMED` that triggers transfer
  sending on general events like a timer.

  HTTP installs a `CURL_CR_PROTOCOL` reader when announcing `Expect:
  100-continue`. That reader works as follows:

  - on first invocation, records time, starts the `EXPIRE_100_TIMEOUT`
    timer, disables `KEEP_SEND`, enables `KEEP_SEND_TIMER` and returns 0,
    eos=FALSE like a paused upload.

  - on subsequent invocation it checks if the timer has expired. If so, it
    enables `KEEP_SEND` and switches to passing through reads to the
    underlying readers.

  Transfer handling's `readwrite()` will be invoked when a timer expires
  (like `EXPIRE_100_TIMEOUT`) or when data from the server arrives. Seeing
  `KEEP_SEND_TIMER`, it will try to upload more data, which triggers
  reading from the client readers again. Which then may lead to a new
  pausing or cause the upload to start.

  Flags and timestamps connected to this have been moved from
  `SingleRequest` into the reader's context.

  Closes #13110

- mbedtls: fix pytest for newer versions

  Fix the expectations in pytest for newer versions of mbedtls

  Closes #13132

Daniel Stenberg (15 Mar 2024)

- ipv6.md: mention IPv4 mapped addresses

  Reported-by: Josh Soref
  Assisted-by: Jay Satiro
  Fixes #13112
  Closes #13131

Stefan Eissing (15 Mar 2024)

- http: revisit http_perhapsrewind()

  - use facilities provided by client readers better
  - work also for non-uploading requests like GET/HEAD
  - update documentation

  Closes #13117

- test 1541: verify getinfo values on first header callback

  Reported-by: chensong1211 on github
  Ref: #13125
  Closes #13128

- TLS: start shutdown only when peer did not already close

  - When curl sees a TCP close from the peer, do not start a TLS shutdown.
    TLS shutdown is a handshake and if the peer already closed the
    connection, it is not interested in participating.

  Reported-by: dfdity on github
  Assisted-by: Jiří Bok
  Assisted-by: Pēteris Caune
  Fixes #10290
  Closes #13087

Daniel Stenberg (14 Mar 2024)

- RELEASE-NOTES: synced

- curl: make --libcurl output better CURLOPT_*SSLVERSION

  The option is really two enums ORed together, so it needs special
  attention to make the code output nice.

  Added test 1481 to verify. Both the server and the proxy versions.

  Reported-by: Boris Verkhovskiy
  Fixes #13127
  Closes #13129

- GHA/linux: add sysctl trick to work-around GitHub runner issue

  The GitHub image runner update from 20240304.1.0 to 20240310.1
  introduces a problem for clang-14. The issue is caused by
  incompatibility between llvm 14 provided in ubuntu-22.04 image and the
  much newer kernel configured with high-entropy ASLR.

  As a work-around, we issue a sysctl command to lower the entropy and get
  clang-14 to work again.

  URL: https://github.com/actions/runner-images/issues/9491

  Closes #13124

- SPONSORS: describe the basics

  Closes #13119

- GOVERNANCE: document the core team

  Closes #13118

Jay Satiro (13 Mar 2024)

- vquic-tls: fix the error code returned for bad CA file

  - Return CURLE_SSL_CACERT_BADFILE if wolfSSL encounters a problem
    reading the cert file or path.

  This is a follow-up to the parent commit aedbbdf1.

  Reported-by: Karthikdasari0423@users.noreply.github.com

  Fixes https://github.com/curl/curl/issues/13115

Daniel Stenberg (12 Mar 2024)

- vquic-tls: return appropirate errors on wolfSSL errors

  Reported-by: Dexter Gerig
  Closes #13107

Viktor Szakats (12 Mar 2024)

- tidy-up: one comment and EOF newlines

  Reviewed-by: Daniel Stenberg
  Closes #13108

Daniel Stenberg (12 Mar 2024)

- cmdline-opts: language cleanups

  Use imperative mood consistently for the first sentence describing an
  option.

  "Set this" instead "tell curl to set" or "this sets..."

  Plus some extra cleanups and rephrasing.

  Closes #13106

- managen: remove space before protocols

  For options that are listed for specific protocols, the protocols (shown
  first within parentheses) are now output without the leading space in the
  manpage output.

  Closes #13105

Jay Satiro (12 Mar 2024)

- mbedtls: properly cleanup the thread-shared entropy

  - Store the state of the thread-shared entropy for global init/cleanup.

  - Use curl's thread support of mbedtls for all Windows builds instead of
    just when the threaded resolver is used via USE_THREADS_WIN32.

  Prior to this change on global cleanup curl builds that have curl thread
  support for mbedtls freed the entropy (8b1d2298) but failed to mark that
  it had been freed, which caused problems on subsequent init + transfer.

  Bug: https://github.com/curl/curl/discussions/11919#discussioncomment-8687105
  Reported-by: awesomekosm@users.noreply.github.com

  Closes https://github.com/curl/curl/pull/13071

Daniel Stenberg (12 Mar 2024)

- tool_getparam: handle non-existing (out of range) short-options

  ... correctly, even when they follow an existing one without a space in
  between.

  Verify with test 467

  Follow-up to 07dd60c05b
  Reported-by: Geeknik Labs
  Fixes #13101
  Closes #13102

Stefan Eissing (11 Mar 2024)

- lib: move 'done' parameter to SingleRequests

  A transfer may do several `SingleRequest`s for its success. This happens
  regularly for authentication, follows and retries on failed connections.
  The "readwrite()" calls and functions connected to those carried a `bool
  *done` parameter to indicate that the current `SingleRequest` is over.
  This may happen before `upload_done` or `download_done` bits of
  `SingleRequest` are set.

  The problem with that is now `write_resp()` protocol handlers are
  invoked in places where the `bool *done` cannot be passed up to the
  caller. Instead of being a bool in the call chain, it needs to become a
  member of `SingleRequest`, reflecting its state.

  This removes the `bool *done` parameter and adds the `done` bit to
  `SingleRequest` instead. It adds `Curl_req_soft_reset()` for using a
  `SingleRequest` in a follow up, clearing `done` and other
  flags/counters.

  Closes #13096

- request: clarify message when request has been sent off

  Change the "uploaded and fine" message for requests without a body

  Reported-by: Karthikdasari0423 on github
  Fixes #13093
  Closes #13095

Daniel Stenberg (11 Mar 2024)

- RELEASE-NOTES: synced

Stefan Eissing (9 Mar 2024)

- lib: keep conn IP information together

  new struct ip_quadruple for holding local/remote addr+port

  - used in data->info and conn and cf-socket.c
  - copy back and forth complete struct
  - add 'secondary' to conn
  - use secondary in reporting success for ftp 2nd connection

  Reported-by: DasKutti on github
  Fixes #13084
  Closes #13090

Daniel Stenberg (8 Mar 2024)

- scripts/managen: the new name and home for the manpage generator

  It was previously docs/cmdline-opts/gen.pl

  Closes #13089

- VULN-DISCLOSURE-POLICY.md: update detail about CVE requests

  curl is a CNA now

  Closes #13088

Stefan Eissing (8 Mar 2024)

- lib: client reader polish

  - seek_func/seek_client, use transfer values only
      - remove copies held in `struct connectdata`, use only
        ever `data->set.seek_func`
      - resolves possible issues in multiuse connections
      - new mime post reader eliminates need to ever overwriting this

  - websockets, remove empty Curl_ws_done() function

  Closes #13079

Marcel Raad (8 Mar 2024)

- lib1598: fix `CURLOPT_POSTFIELDSIZE` usage

  It requires a `long` argument.

  Closes https://github.com/curl/curl/pull/13085

Daniel Stenberg (8 Mar 2024)

- docs/cmdline-opts: drop the curl.1 from the dist tarball

  Since it is no longer needed for building tool_hugehelp.c and all the
  docs is available in readable markdown format in the tarball, the peeps
  that don't want to build the manpage still do good.

  Removing it also fixes the complexity of out-of-tree builds when the
  curl.1 exists in the source tree.

- test1140/1173: extend wildcards to find curl.1

  ... in its new build path.

  Also update the test scripts to be more precise in error messages to
  help us understand CI errors better.

  Follow-up to f03c85635f35269f1
  Ref: #13029
  Closes #13083

- http2: minor tweaks to optimize two struct sizes

  - use BIT() instead of bool
  - place the struct fields in (roughly) size order

  Closes #13082

- buildconf.bat: remove outdated groff/nroff use

  - don't try to generate the real hugehelp file, because it requires
    curl.txt which needs a build
  - don't attempt to do anything in a c-ares subdirectory

  Follow-up to f03c85635f35269
  Closes #13078

- http2: memory errors in the push callbacks are fatal

  Use the correct nghttp2 error code accordingly.

  Closes #13081

Viktor Szakats (7 Mar 2024)

- mkhelp: rename variable to fix compiler warnings

  ```
  src\tool_operate.c(541,33): warning C4459: declaration of 'm' hides global de
  claration [_bld\src\curl.vcxproj]
    _bld\src\tool_hugehelp.c(8,27):
    see declaration of 'm'
  src\tool_paramhlp.c(307,14): warning C4459: declaration of 'm' hides global d
  eclaration [_bld\src\curl.vcxproj]
  src\tool_progress.c(118,16): warning C4459: declaration of 'm' hides global d
  eclaration [_bld\src\curl.vcxproj]
  src\tool_writeout.c(288,31): warning C4459: declaration of 'm' hides global d
  eclaration [_bld\src\curl.vcxproj]
  ```
  Ref: https://ci.appveyor.com/project/curlorg/curl/builds/49348159/job/51ee75c
  d2n0wj6lc#L614

  Reviewed-by: Daniel Stenberg
  Closes #13077

Daniel Stenberg (7 Mar 2024)

- KNOWN_BUGS: POP3 issue when reading small chunks

  Closes #12063

- RELEASE-NOTES: synced

Robert Moreton (7 Mar 2024)

- asyn-ares: fix data race warning

  - Store the c-ares version during global init.

  Prior to this change several threads could write the same data to a
  static int variable at the same time. Though in practice it's not a
  problem ThreadSanitizer may warn.

  Reported-by: Nikita Taranov
  Assisted-by: Jay Satiro

  Fixes #13065
  Closes #13000

Stefan Eissing (7 Mar 2024)

- hyper: implement unpausing via client reader

  Just a tidy up to contain 'ifdef' pollution of common
  code parts with implementation specifics.

  - remove the ifdef hyper unpausing in easy.c
  - add hyper client reader for CURL_CR_PROTOCOL phase
    that implements the unpause method for calling
    the hyper waker if it is set

  Closes #13075

- ngtcp2: no recvbuf for stream

  - write response data directly to the transfer via
   `Curl_xfer_write_resp()` like we do in HTTP/2.

  Closes #13073

- docs/cmdline-opts/.gitignore: ignore curl.txt

  Closes #13076

Evgeny Grin (Karlson2k) (7 Mar 2024)

- sha512_256: add support for GnuTLS and OpenSSL

  This is a follow-up for PR #12897.

  Add support for SHA-512/256 digest calculation by TLS backends.
  Currently only OpenSSL and GnuTLS (actually, nettle) support
  SHA-512/256.

  Closes #13070

- digest: add check for hashing error

  Closes #13072

Viktor Szakats (7 Mar 2024)

- cmake: enable `ENABLE_CURL_MANUAL` by default

  Meaning `curl.1` and `src/tool_hugehelp.c` are built by default,
  and `--manual` in curl tool is also enabled by default.

  This syncs behaviour with autotools.

  For a reproducible `curl.1`, `SOURCE_DATE_EPOCH` needs to be set
  to a consistent date, e.g. the timestamp of `CHANGES`.

  A pre-built manual (e.g. the one distributed in the official source
  tarball) will be ignored and rebuilt after this patch, unless
  explicitly disabling this option.

  Fixes #13028
  Closes #13069

Stefan Eissing (7 Mar 2024)

- http2: push headers better cleanup

  - provide common cleanup method for push headers

  Closes #13054

Daniel Stenberg (7 Mar 2024)

- GIT-INFO: convert to markdown

  Closes #13074

Richard Levitte (7 Mar 2024)

- cmake: fix libcurl.pc and curl-config library specifications

  Letting CMake figure out where libraries are located gives you full
  paths. When generating libcurl.pc and curl-config, getting libraries as
  full paths is unusual when one expects to get a list of -l<libname>.

  To meet expectations, an effort is made to convert the full paths into
  -l<libname>, possibly with -L<libdir> before it.

  Fixes #6169
  Fixes #12748
  Closes #12930

Daniel Stenberg (7 Mar 2024)

- test463: HTTP with -d @file with file containing CR, LF and null byte

- paramhlp: fix CRLF-stripping files with "-d @file"

  All CR and LF bytes should be stripped, as documented, and all other
  bytes are inluded in the data. Starting now, it also excludes null bytes
  as they would otherwise also cut the data short.

  Reported-by: Simon K
  Fixes #13063
  Closes #13064

Viktor Szakats (7 Mar 2024)

- cmake: fix `CURL_WINDOWS_SSPI=ON` with Schannel disabled

  Prior to this change `CURL_WINDOWS_SSPI` was accidentally forced `OFF`
  when building without the Schannel TLS backend.

  This in turn may have caused Kerberos, SPNEGO and SSPI features
  disappearing even with `CURL_WINDOWS_SSPI=ON` set.

  This patch fixes it by using the `CURL_USE_SCHANNEL` setting as a
  default for `CURL_WINDOWS_SSPI`, but allowing a manual override.

  Also update the option text to better tell its purpose.

  Thanks-to: Andreas Loew
  Reviewed-by: Daniel Stenberg
  Ref: #13056
  Closes #13061

Jay Satiro (6 Mar 2024)

- KNOWN_BUGS: FTPS server compatibility on Windows with Schannel

  - Remove "2.12 FTPS with Schannel times out file list operation"

  - Remove "7.12 FTPS directory listing hangs on Windows with Schannel"

  - Add "7.12 FTPS server compatibility on Windows with Schannel"

  This change adds a more generic bug description that explains FTPS with
  the latest curl and Schannel is not widely used and may have more bugs
  than other TLS backends.

  The two removed FTPS Schannel bugs can't be reproduced any longer and
  were likely fixed by 24d6c288.

  Ref: https://github.com/curl/curl/issues/5284
  Ref: https://github.com/curl/curl/issues/9161
  Ref: https://github.com/curl/curl/issues/12894

  Closes https://github.com/curl/curl/pull/13032

- trace-config.md: remove the mutexed options list

  - Remove the rendered manpage message that says:
    "[--trace-config] is mutually exclusive to --trace and -v, --verbose".

  Actually it can be used with either of those options, which are mutually
  exclusive to each other but not to --trace-config.

  Ref: https://curl.se/docs/manpage.html#--trace-config

  Closes https://github.com/curl/curl/pull/13031

Daniel Stenberg (6 Mar 2024)

- mkhelp: simplify the generated hugehelp program

  Use a plain array and puts() every line, also allows us to provide the
  strings without ending newlines.

  - merge blank lines into the next one as a prefixed newline.
  - turn eight consecutive spaces into a tab (since they can only be on the
    left side of text)
  - the newly generated tool_hugehelp is 3K lines shorter and 50K smaller
  - modifies the top logo layout a little by reducing the indent

  Closes #13047

- docs: ascii version of manpage without nroff

  Create ASCII version of manpage without nroff

   - build src/tool_hugegelp.c from the ascii manpage
   - move the the manpage and the ascii version build to docs/cmdline-opts
   - remove all use of nroff from the build process
   - should make the build entirely reproducible (by avoiding nroff)

   - partly reverts 2620aa9 to build libcurl option man pages one by one
     in cmake because the appveyor builds got all crazy until I did

  The ASCII version of the manpage

   - is built with gen.pl, just like the manpage is
   - has a right-justified column making the appearance similar to the previous
     version
   - uses a 4-space indent per level (instead of the old version's 7)
   - does not do hyphenation of words (which nroff does)

  History

    We first made the curl build use nroff for building the hugehelp file in
    December 1998, for curl 5.2.

  Closes #13047

Stefan Eissing (6 Mar 2024)

- lib: add `void *ctx` to reader/writer instances

  - `struct Curl_cwriter` and `struct Curl_creader` now carry a
    `void *ctx` member that points to the instance as allocated.
  - using `r->ctx` and `w->ctx` as pointer to the instance specific
    struct that has been allocated

  Reported-by: Rudi Heitbaum
  Fixes #13035
  Closes #13059

- http: fix dead code in setting post client reader

  - postsize was always 0, thus the check's else never happened
    after the mime client reader was introduced

  Follow-up to 0ba47146f7ff3d
  Closes #13060

- http2: fix push discard

  - fix logic in discarding a failed pushed stream so that
    stream context is properly cleaned up

  Closes #13055

- transfer.c: break receive loop in speed limited transfers

  - the change breaks looping in transfer.c receive for transfers that are
    speed limited on having gotten *some* bytes.
  - the overall speed limit timing is done in multi.c

  Reported-by: Dmitry Karpov
  Bug: https://curl.se/mail/lib-2024-03/0001.html
  Closes #13050

- mime: add client reader

  Add `mime` client reader. Encapsulates reading from mime parts, getting
  their length, rewinding and unpausing.

  - remove special mime handling from sendf.c and easy.c
  - add general "unpause" method to client readers
  - use new reader in http/imap/smtp
  - make some mime functions static that are now only used internally

  In addition:
  - remove flag 'forbidchunk' as no longer needed

  Closes #13039

Daniel Stenberg (5 Mar 2024)

- RELEASE-NOTES: synced

- TODO: remove "build HTTP/3 with OpenSSL and nghttp3 using cmake"

  Follow-up to 8e741644a229c37

Tal Regev (5 Mar 2024)

- cmake: add USE_OPENSSL_QUIC support

  Closes #13034

Stefan Eissing (5 Mar 2024)

- TIMER_STARTTRANSFER: set the same for everyone

  - set TIMER_STARTTRANSFER on seeing the first response bytes
    in the download client writer, not coming from a CONNECT
  - initialized the timer the same way for all protocols
  - remove explicit setting of TIMER_STARTTRANSFER in file.c
    and c-hyper.c

  Closes #13052

Michael Kaufmann (5 Mar 2024)

- http: better error message for HTTP/1.x response without status line

  If a response without a status line is received, and the connection is
  known to use HTTP/1.x (not HTTP/0.9), report the error "Invalid status
  line" instead of "Received HTTP/0.9 when not allowed".

  Closes #13045

Viktor Szakats (5 Mar 2024)

- KNOWN_BUGS: fix typo

  Reviewed-by: Daniel Stenberg
  Closes #13051

Sebastian Neubauer (5 Mar 2024)

- smpt: fix starttls

  In cases where the connection was fast, curl sometimes failed to open a
  connection. This fixes a regression of c2d973627bab12abc5486a3f3.

  The regression triggered in these steps:

  1. Create an smtp connection
  2. Use STARTTLS
  3. Receive the response
  4. We are inside the loop in `smtp_statemachine`, calling
     `smtp_state_starttls_resp`
  5. In the good flow, we exit the loop, re-enter `smtp_statemachine` and
     run `smtp_perform_upgrade_tls` at the start of the function.

     In the bad flow, we stay in the while loop, calling
     `Curl_pp_readresp`, which reads part of the TLS handshake and things
     go wrong.

  The reason is that `Curl_pp_moredata` changed behavior and always
  returns `true`, so we stay in the loop in `smtp_statemachine`. With a
  slow connection `Curl_pp_readresp` cannot read new data and returns
  `CURL_AGAIN`, so we leave the loop and re-enter `smtp_statemachine`.

  With a fast connection, `Curl_pp_readresp` reads new data from the tcp
  connection, which is part of the TLS handshake.

  The fix is in `Curl_pp_moredata`, which needs to take the final line
  into account and return `false` if only the final line is stored.

  Closes #13048

Stefan Eissing (5 Mar 2024)

- lib: enhance client reader resume + rewind

  - update client reader documentation
  - client reader, add rewind capabilities
      - tell creader to rewind on next start
      - Curl_client_reset() will keep reader for future rewind if requested
      - add Curl_client_cleanup() for freeing all resources independent of
        rewinds
      - add Curl_client_start() to trigger rewinds
      - move rewind code from multi.c to sendf.c and make part of
        "cr-in"'s implementation
  - http, move the "resume_from" handling into the client readers
      - the setup of a HTTP request is reshuffled to follow:
        * determine method, target, auth negotiation
        * install the client reader(s) for the request, including crlf
          conversions and "chunked" encoding
        * apply ranges to client reader
        * concat request headers, upgrades, cookies, etc.
        * complete request by determining Content-Length of installed
          readers in combination with method
        * send
      - add methods for client readers to
        * return the overall length they will generate (or -1 when unknown)
        * return the amount of data on the CLIENT level, so that
          expect-100 can decide if it want to apply itself
        * set a "resume_from" offset or fail if unsupported
      - struct HTTP has become largely empty now
  - rename `Client_reader_*` to `Curl_creader_*`

  Closes #13026

Viktor Szakats (5 Mar 2024)

- openssl-quic: fix BIO leak and Windows warning

  Caused by an accidentally duplicated line in
  d6825df334def106f735ce7e0c1a2ea87bddffb0.

  ```
  .../lib/vquic/curl_osslq.c:1095:30: warning: implicit conversion loses intege
  r precision: 'curl_socket_t' (aka 'unsigned long long') to 'int' [-Wshorten-6
  4-to-32]
   1095 |   bio = BIO_new_dgram(ctx->q.sockfd, BIO_NOCLOSE);
        |         ~~~~~~~~~~~~~ ~~~~~~~^~~~~~
  1 warning and 2 errors generated.
  ```

  Reviewed-by: Stefan Eissing
  Closes #13043

- openssl-quic: fix unity build, casing, indentation

  - rename static functions to avoid duplicate symbols in unity mode.
  - windows -> Windows/window in error message and comment.
  - fix indentation.

  Reviewed-by: Stefan Eissing
  Closes #13044

Daniel Stenberg (5 Mar 2024)

- gen.pl: make the "manpageification" faster

  The function that replaces occurances of "--longoption" with "-Z,
  --longoption" etc with the proper highlight applied, no longer loops
  over the options.

  Closes #13041

- CONTRIBUTE: update the section on documentation format

  ... since most of it is markdown now.

  Closes #13046

- smtp: free a temp resource

  The returned address needs to be freed.

  Follow-up to e3905de8196d67b89df1602feb84c1f993211b20
  Spotted by Coverity

  Closes #13038

- _VARIABLES.md: improve the description

  Closes #13040

dependabot[bot] (4 Mar 2024)

- build(deps): bump fsfe/reuse-action from 2 to 3

  Bumps [fsfe/reuse-action](https://github.com/fsfe/reuse-action) from 2 to 3.
  - [Release notes](https://github.com/fsfe/reuse-action/releases)
  - [Commits](https://github.com/fsfe/reuse-action/compare/v2...v3)

  ---
  updated-dependencies:
  - dependency-name: fsfe/reuse-action
    dependency-type: direct:production
    update-type: version-update:semver-major
  ...

  Signed-off-by: dependabot[bot] <support@github.com>

Stefan Eissing (4 Mar 2024)

- pytest: adapt to API change

  - pytest has changed the signature of the hook pytest_report_header()
    for some obscure reason and that change landed in our CI now

  - remove the changed param that we never used anyway

  Closes #13037

Daniel Stenberg (4 Mar 2024)

- cookie: if psl fails, reject the cookie

  A libpsl install without data and no built-in database is now considered
  bad enough to reject all cookies since they cannot be checked. It is
  somewhat of a user error, but still.

  Reported-by: Dan Fandrich
  Closes #13033

Stefan Eissing (4 Mar 2024)

- lib: further send/upload handling polish

  - Move all the "upload_done" handling to request.c

    - add possibility to abort sending of a request
    - add `Curl_req_done_sending()` for checks
    - transfer.c: readwrite_upload() now clean

  - removing data->state.ulbuf and data->req.upload_fromhere

    - as well as data->req.upload_present
    - set data->req.upload_done on having read all from
      the client and completely flushed the send buffer

  - tftp, remove setting of data->req.upload_fromhere

    - serves no purpose as `upload_present` is not set
      and the data itself is directly `sendto()` anyway

  - smtp, make upload EOB conversion a client reader
  - xfer_ulbuf addition

    - add xfer_ulbuf for borrowing, similar to xfer_buf
    - use in file upload
    - use in c-hyper body sending

  - h1-proxy, remove init of data->state.uilbuf that is never used
  - smb, add own send_buf instead of using data->state.ulbuf

  Closes #13010

Daniel Stenberg (4 Mar 2024)

- RELEASE-NOTES: synced

kpcyrd (3 Mar 2024)

- rustls: fix two warnings related to number types

  Reported-by: Gisle Vanem
  Follow-up to #12989
  Closes #13017

Stefan Eissing (3 Mar 2024)

- bufq: writing into a softlimit queue cannot be partial

  - when unable to obtain a new chunk on a softlimit bufq,
    this is an allocation error and needs to be reported as
    such.
  - writes into a soflimit bufq never must be partial success

  Reported-by: Dan Fandrich
  Fixes #13020
  Closes #13023

Dan Fandrich (2 Mar 2024)

- configure: Don't build shell completions when disabled

  With the recent changes to completion file building, the files were
  built always and only installation was selectively disabled.  Now, when
  they are disabled they aren't even built, avoiding a build-time error in
  environments where it's not possible to run the curl binary that was
  just created (e.g. if library paths were not set up correctly).

  Follow-up to 0f7aba83c

  Reported-by: av223119 on github
  Fixes #13027
  Closes #13030

Jay Satiro (2 Mar 2024)

- cmdline-opts/_EXITCODES: sync with libcurl-errors

  - Add error code 100 (CURLE_TOO_LARGE) to the list of error codes that
    can be returned by the curl tool.

  Closes https://github.com/curl/curl/pull/13015

Stefan Eissing (1 Mar 2024)

- hyper: disable test1598 due to lack of trailer support

  Follow-up to 50838095

  Closes #13016

Dan Fandrich (1 Mar 2024)

- ftp: Mark a const buffer as const

- appveyor: Properly skip if only CircleCI is changed

- docs: Update minimal binary size in INSTALL.md

  Include more options to reduce binary size.

- configure: Don't make shell completions without perl

  The code that attempted to skip building the shell completions didn't
  work properly and tried to build them even if perl wasn't available.
  This step, as well as the install step, is now properly skipped without
  perl.

  Follow-up to 89733e2dd

  Closes #13022

RainRat (1 Mar 2024)

- misc: Fix typos in docs and lib

  This fixes miscellaneous typos and duplicated words in the docs, lib
  and test comments and a few user facing errorstrings.

  Author: RainRat on Github
  Reviewed-by: Daniel Gustafsson <daniel@yesql.se>
  Reviewed-by: Dan Fandrich <dan@coneharvesters.com>
  Closes: #13019

Dan Fandrich (29 Feb 2024)

- configure: build & install shell completions when enabled

  The --with-fish-functions-dir and --with-zsh-functions-dir options
  currently have no effect on a normal build because the scripts/ directory
  where they're used is not built. Add scripts/ to a normal build and
  change the completion options to default to off to preserve the existing
  behaviour.

  Closes: #12906

- github/labeler: improve the match patterns

Stefan Eissing (28 Feb 2024)

- tests: add test1598 for POST with trailers

  - test POST fields with trailers and chunked encoding

  Ref: #12938
  Closes #13009

Daniel Stenberg (28 Feb 2024)

- cmdline-opts/_VERSION: provide %VERSION correctly

  ... so that it does not get included verbatim in the output. Fixes a
  regression shipped in 8.6.0.

  Also fix a format mistake in form.md

  Closes #13008

Stefan Eissing (28 Feb 2024)

- lib: Curl_read/Curl_write clarifications

  - replace `Curl_read()`, `Curl_write()` and `Curl_nwrite()` to
    clarify when and at what level they operate
  - send/recv of transfer related data is now done via
    `Curl_xfer_send()/Curl_xfer_recv()` which no longer has
    socket/socketindex as parameter. It decides on the transfer
    setup of `conn->sockfd` and `conn->writesockfd` on which
    connection filter chain to operate.
  - send/recv on a specific connection filter chain is done via
    `Curl_conn_send()/Curl_conn_recv()` which get the socket index
    as parameter.
  - rename `Curl_setup_transfer()` to `Curl_xfer_setup()` for
    naming consistency
  - clarify that the special CURLE_AGAIN hangling to return
    `CURLE_OK` with length 0 only applies to `Curl_xfer_send()`
    and CURLE_AGAIN is returned by all other send() variants.
  - fix a bug in websocket `curl_ws_recv()` that mixed up data
    when it arrived in more than a single chunk (to be made
    into a sperate PR, also)

  Added as documented [in
  CLIENT-READER.md](https://github.com/curl/curl/blob/5b1f31dfbab8aef467c419c68
  aa06dc738cb75d4/docs/CLIENT-READERS.md).

  - old `Curl_buffer_send()` completely replaced by new `Curl_req_send()`
  - old `Curl_fillreadbuffer()` replaced with `Curl_client_read()`
  - HTTP chunked uploads are now formatted in a client reader added when
    needed.
  - FTP line-end conversions are done in a client reader added when
    needed.
  - when sending requests headers, remaining buffer space is filled with
    body data for sending in "one go". This is independent of the request
    body size. Resolves #12938 as now small and large requests have the
    same code path.

  Changes done to test cases:

  - test513: now fails before sending request headers as this initial
    "client read" triggers the setup fault. Behaves now the same as in
    hyper build
  - test547, test555, test1620: fix the length check in the lib code to
    only fail for reads *smaller* than expected. This was a bug in the
    test code that never triggered in the old implementation.

  Closes #12969

Daniel Gustafsson (28 Feb 2024)

- curldown: Fix email address in Copyright

  The curldown conversion accidentally replaced daniel@haxx.se with
  just daniel.se.  This reverts back to the proper email address in
  the curldown docs as well as in a few other stray places where it
  was incorrect (while unrelated to curldown).

  Reviewed-by: Daniel Stenberg <daniel@haxx.se>
  Closes: #12997

Daniel Stenberg (28 Feb 2024)

- getparam: make --ftp-ssl work again

  Follow-up to 9e4e527 which accidentally broke it

  Reported-by: Jordan Brown
  Fixes #13006
  Closes #13007

- KNOWN_BUGS: IMAPS connection fails with rustls error

  Closes #10457

- KNOWN_BUGS: FTPS upload, FileZilla, GnuTLS and close_notify

  Closes #11383

- KNOWN_BUGS: Implicit FTPS upload timeout

  Closes #11720

- KNOWN_BUGS: HTTP/2 prior knowledge over proxy

  Closes #12641

- TODO: build HTTP/3 with OpenSSL and nghttp3 using cmake

  Closes #12988

- TODO: Select signature algorithms

  Closes #12982

- examples: use present tense in comments

  remove "will" and some other word fixes

  Closes #13003

- docs: more language cleanups

  - present tense
  - avoid bad words

  Closes #13003

Daniel Gustafsson (27 Feb 2024)

- setopt: Fix disabling all protocols

  When disabling all protocols without enabling any, the resulting
  set of allowed protocols remained the default set.  Clearing the
  allowed set before inspecting the passed value from --proto make
  the set empty even in the errorpath of no protocols enabled.

  Co-authored-by: Dan Fandrich <dan@telarity.com>
  Reported-by: Dan Fandrich <dan@telarity.com>
  Reviewed-by: Daniel Stenberg <daniel@haxx.se>
  Closes: #13004

Andreas Kiefer (27 Feb 2024)

- fopen: fix narrowing conversion warning on 32-bit Android

  This was fixed in commit 06dc599405f, but came back in commit
  03cb1ff4d62.

  When building for 32-bit ARM or x86 Android, `st_mode` is defined as
  `unsigned int` instead of `mode_t`, resulting in a
  `-Wimplicit-int-conversion` clang warning because `mode_t` is
  `unsigned short`. Add a cast to silence the warning, but only for
  32-bit Android builds, because other architectures and platforms are
  not affected.

  Ref: https://android.googlesource.com/platform/bionic/+/refs/tags/ndk-r25c/li
  bc/include/sys/stat.h#86
  Closes https://github.com/curl/curl/pull/12998

Stefan Eissing (27 Feb 2024)

- lib: Curl_read/Curl_write clarifications

  - replace `Curl_read()`, `Curl_write()` and `Curl_nwrite()` to
    clarify when and at what level they operate
  - send/recv of transfer related data is now done via
    `Curl_xfer_send()/Curl_xfer_recv()` which no longer has
    socket/socketindex as parameter. It decides on the transfer
    setup of `conn->sockfd` and `conn->writesockfd` on which
    connection filter chain to operate.
  - send/recv on a specific connection filter chain is done via
    `Curl_conn_send()/Curl_conn_recv()` which get the socket index
    as parameter.
  - rename `Curl_setup_transfer()` to `Curl_xfer_setup()` for
    naming consistency
  - clarify that the special CURLE_AGAIN hangling to return
    `CURLE_OK` with length 0 only applies to `Curl_xfer_send()`
    and CURLE_AGAIN is returned by all other send() variants.
  - fix a bug in websocket `curl_ws_recv()` that mixed up data
    when it arrived in more than a single chunk

  The method for sending not just raw bytes, but bytes that are either
  "headers" or "body". The send abstraction stack, to to bottom, now is:

  * `Curl_req_send()`: has parameter to indicate amount of header bytes,
    buffers all data.
  * `Curl_xfer_send()`: knows on which socket index to send, returns
    amount of bytes sent.
  * `Curl_conn_send()`: called with socket index, returns amount of bytes
    sent.

  In addition there is `Curl_req_flush()` for writing out all buffered
  bytes.

  `Curl_req_send()` is active for requests without body,
  `Curl_buffer_send()` still being used for others. This is because the
  special quirks need to be addressed in future parts:

  * `expect-100` handling
  * `Curl_fillreadbuffer()` needs to add directly to the new
    `data->req.sendbuf`
  * special body handlings, like `chunked` encodings and line end
    conversions will be moved into something like a Client Reader.

  In functions of the pattern `CURLcode xxx_send(..., ssize_t *written)`,
  replace the `ssize_t` with a `size_t`. It makes no sense to allow for negativ
  e
  values as the returned `CURLcode` already specifies error conditions. This
  allows easier handling of lengths without casting.

  Closes #12964

Daniel Stenberg (27 Feb 2024)

- multi: make add_handle free any multi_easy

  If the easy handle that is being added to a multi handle has previously
  been used for curl_easy_perform(), there is a private multi handle here
  that we can kill off. While it flushes some caches etc for the easy
  handle would it be used for an easy interface transfer again after being
  used in the multi stack, this cleanup simplifies behavior and uses less
  memory.

  Closes #12992

- docs: use present tense

  avoid "will", detect "will" as a bad word in the CI

  Also line wrapped a bunch of paragraphs

  Closes #13001

- CURLOPT_SSL_CTX_FUNCTION.md: no promises of lifetime after return

  ... and cleanup other language.

  Closes #12999

Stefan Eissing (27 Feb 2024)

- lib: send rework

  Curl_read/Curl_write clarifications

  - replace `Curl_read()`, `Curl_write()` and `Curl_nwrite()` to 1clarify
    when and at what level they operate

  - send/recv of transfer related data is now done via
    `Curl_xfer_send()/Curl_xfer_recv()` which no longer has
    socket/socketindex as parameter. It decides on the transfer setup of
    `conn->sockfd` and `conn->writesockfd` on which connection filter
    chain to operate.

  - send/recv on a specific connection filter chain is done via
    `Curl_conn_send()/Curl_conn_recv()` which get the socket index as
    parameter.

  - rename `Curl_setup_transfer()` to `Curl_xfer_setup()` for naming
    consistency

  - clarify that the special CURLE_AGAIN handling to return `CURLE_OK`
    with length 0 only applies to `Curl_xfer_send()` and CURLE_AGAIN is
    returned by all other send() variants.

  SingleRequest reshuffling

  - move functions into request.[ch]
  - differentiate between reset and free
  - add Curl_req_done() to perform last actions
  - add a send `bufq` to SingleRequest for future use in keeping upload data

  Closes #12963

Daniel Stenberg (26 Feb 2024)

- RELEASE-NOTES: synced

- http_chunks: remove unused 'endptr' variable

  Closes #12996

Louis Solofrizzo (26 Feb 2024)

- lib: initialize output pointers to NULL before calling strto[ff,l,ul]

  In order to make MSAN happy:

      ==2200945==WARNING: MemorySanitizer: use-of-uninitialized-value
      #0 0x596f3b3ed246 in curlx_strtoofft [...]/libcurl/src/lib/strtoofft.c:23
  9:11
      #1 0x596f3b402156 in Curl_httpchunk_read [...]/libcurl/src/lib/http_chunk
  s.c:149:12
      #2 0x596f3b348550 in readwrite_data [...]/libcurl/src/lib/transfer.c:607:
  11
      [...]

      ==2202041==WARNING: MemorySanitizer: use-of-uninitialized-value
      #0 0x5a3fab66a72a in Curl_parse_port [...]/libcurl/src/lib/urlapi.c:547:8
      #1 0x5a3fab650645 in parse_authority [...]/libcurl/src/lib/urlapi.c:796:1
  2
      #2 0x5a3fab6740f6 in parseurl [...]/libcurl/src/lib/urlapi.c:1176:16
      #3 0x5a3fab664fc5 in parseurl_and_replace [...]/libcurl/src/lib/urlapi.c:
  1342:12
      [...]

      ==2202320==WARNING: MemorySanitizer: use-of-uninitialized-value
      #0 0x569076a0d6b0 in ipv4_normalize [...]/libcurl/src/lib/urlapi.c:683:12
      #1 0x5690769f2820 in parse_authority [...]/libcurl/src/lib/urlapi.c:803:1
  0
      #2 0x569076a160f6 in parseurl [...]/libcurl/src/lib/urlapi.c:1176:16
      #3 0x569076a06fc5 in parseurl_and_replace [...]/libcurl/src/lib/urlapi.c:
  1342:12
      [...]

  Signed-off-by: Louis Solofrizzo <lsolofrizzo@scaleway.com>
  Closes #12995

Stefan Eissing (26 Feb 2024)

- lib: move client writer into own source

  Refactoring of the client writer that passes the data to the
  client/application's callback functions.

  - split out into own source cw-out.[ch] from sendf.c

  - move tempwrite and tempcount from data->state into the context of the
    client writer

  - redesign the 3 tempwrite dynbufs as a linked list of dynbufs. On
    paused transfers, this allows to "record" interleaved HEADER/BODY
    chunks to be "played back" in the same order on unpausing.

  - keep the overall size limit of all buffered data to DYN_PAUSE_BUFFER.
    On exceeding that, return CURLE_TOO_LARGE instead of
    CURLE_OUT_OF_MEMORY as before.

  - add method to be called when a transfer is DONE to allow writing of
    any data still buffered

  - when paused, record HEADER writes exactly as they come for later
    playback. HEADERs are documented to be written one-by-one.

  Closes #12898

- urldata: move authneg bit from conn to Curl_easy

  - from `conn->bits.authneg` to `data->req.authneg`
  - this is a property of the request about to be made
    and not a property of the connection
  - in multiuse connections, transfer could step on each others
    toes here potentially.

  Closes #12949

- c-hyper: add header collection writer in hyper builds

  Closes #12880

- http: move headers collecting to writer

  - add a client writer that does "push" response
    headers written to the client if the headers api
    is enabled
  - remove special handling in sendf.c
  - needs to be installed very early on connection
    setup to catch CONNECT response headers

  Closes #12880

- sendf: Curl_client_write(), make passed in buf const

Michał Antoniak (26 Feb 2024)

- lib: remove curl_mimepart object when CURL_DISABLE_MIME

  Remove curl_mimepart object from UserDefined structure when
  CURL_DISABLE_MIME flag is active. Reduce size of UserDefined structure.

  Also remove unreachable code: when CURL_DISABLE_MIME is set, httpreq can
  never have HTTPREQ_POST_MIME value and the same goes for the
  CURL_DISABLE_FORM_API flag and the HTTPREQ_POST_FORM value

  Closes #12948

kpcyrd (26 Feb 2024)

- rustls: make curl compile with 0.12.0

  Closes #12989

Daniel Stenberg (26 Feb 2024)

- strtoofft: fix the overflow check

  ... to not rely on wrapping, since it is an undefined behavior that is
  not what always might happen. This is in our private strtoff() parser
  function, used only on platforms without a native version.

  Reported-by: vulnerabilityspotter on hackerone
  Closes #12990

- libssh/libssh2: return error on too big range

  If trying to get the range 0 - 2^63 and the remote file is 2^63 bytes or
  larger.

  Fixes #12983
  Closes #12984

Scott Talbert (24 Feb 2024)

- setopt: fix check for CURLOPT_PROXY_TLSAUTH_TYPE value

  Prior to this change CURLOPT_PROXY_TLSAUTH_TYPE would return
  CURLE_BAD_FUNCTION_ARGUMENT on any type other than NULL. Since there is
  only one type of TLS auth and it is also the default (SRP) the TLS auth
  would work anyway.

  Closes https://github.com/curl/curl/pull/12981

Jay Satiro (24 Feb 2024)

- mprintf: fix format prefix I32/I64 for windows compilers

  - Support I32 & I64 (eg: %I64d) for all Win32 builds.

  Prior to this change mprintf support for the I format prefix, which is a
  Microsoft extension, was dependent on the compiler used.

  When Borland compiler support was removed in fd7ef00f the prefix was
  then no longer supported for that compiler; however since it's still
  possible to build with Borland I'm restoring support for the prefix in
  this way.

  Reported-by: Paweł Witas

  Fixes https://github.com/curl/curl/issues/12944
  Closes https://github.com/curl/curl/pull/12950

Daniel Stenberg (23 Feb 2024)

- cd2nroff: gen: make `\>` in input to render as plain '>' in output

  The same (copy and pasted) fix/mistake as in gen.pl

- gen: make `\>` in input to render as plain '>' in output

  Reported-by: Gisle Vanem
  Fixes #12977
  Closes #12978

Fabrice Fontaine (23 Feb 2024)

- configure.ac: find libpsl with pkg-config

  Find libpsl with pkg-config to avoid static build failures.

  Ref: http://autobuild.buildroot.org/results/1fb15e1a99472c403d0d3b1a688902f32
  e78d002

  Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
  Closes #12947

Daniel Stenberg (23 Feb 2024)

- BUG-BOUNTY.md: clarify that the curl security team decides

  Closes #12975

- THANKS: add bug reporter from #740

  Ref: https://github.com/curl/curl/issues/740

Stefan Eissing (22 Feb 2024)

- multi: fix multi_sock handling of select_bits

  - OR the event bitmask to data->state.select_bits instead of overwriting
    them. They are cleared again on use.

  Reported-by: 5533asdg on github
  Fixes #12971
  Closes #12972

Daniel Stenberg (22 Feb 2024)

- curlver: bump to 8.7.0 for next release

- RELEASE-NOTES: synced

- write-out: add '%{proxy_used}'

  Returns 1 if the previous transfer used a proxy, otherwise 0. Useful to
  for example determine if a `NOPROXY` pattern matched the hostname or
  not.

  Extended test 970 and 972

- CURLINFO_USED_PROXY: return bool whether the proxy was used

  Adds test536 to verify

  Closes #12719

- sha512_256: remove the cast macro, minor language/format edits

  Follow-up to cbe41d151d6a100c

  Closes #12966

Stefan Eissing (20 Feb 2024)

- DoH: add trace configuration

  - refs #12397 where it is dicussed how to en-/disable verbose output
    of DoH operations
  - introducing `struct curl_trc_feat` to track a curl feature for
    tracing
  - adding `data->state.feat` optionally pointing to the feature a
    transfer belongs to
  - adding trace functions and verbosity checks on features
  - using trace feature in DoH code
  - documenting `doh` as feature for `--trace-config`

  Closes #12411

- websocket: fix curl_ws_recv()

  - when data arrived in several chunks, the collection into
    the passed buffer always started at offset 0, overwriting
    the data already there.

  adding test_20_07 to verify fix

  - debug environment var CURL_WS_CHUNK_SIZE can be used to
    influence the buffer chunk size used for en-/decoding.

  Closes #12945

Evgeny Grin (Karlson2k) (20 Feb 2024)

- digest: support SHA-512/256

  Also fix the tests. New implementation tested with GNU libmicrohttpd.
  The new numbers in tests are real SHA-512/256 numbers (not just some
  random ;) numbers ).

- tests: add SHA-512/256 unit test

- SHA-512/256: implement hash algorithm

  Closes #12897

- curl_setup.h: add curl_uint64_t internal type

  The unsigned version of curl_off_t basically

Daniel Stenberg (20 Feb 2024)

- docs: dist curl*.1 and install without perl

  Drop docs/mk-ca-bundle.1 from the tarball. It can be generated at will.

  Closes #12959
  Fixes #12921
  Reported-by: Michael Forney

Stefan Eissing (20 Feb 2024)

- OpenSSL QUIC: adapt to v3.3.x

  - set our idle timeout as transport parameter
  - query negotiated idle timeout for connection alive checks
  - query number of available bidi streams on a connection
  - use write_ex2 with SSL_WRITE_FLAG_CONCLUDE to signal
    EOF on last chunk write, so stream close does not
    require an additional QUIC packet

  Closes #12933

Ramiro Garcia (19 Feb 2024)

- MANUAL.md: fix typo

  Closes #12965

Daniel Stenberg (19 Feb 2024)

- BINDINGS: add mcurl, the python binding

  Ref: #12956
  Closes #12962

- mk-ca-bundle.md: cleanups and polish

  Closes #12958

- spellcheck.yml: remove .1/.3 handling, clean all man page .md files

  Since we generate all .1 and .3 files from markdown now, we can limit
  the spellcheck to the markdown versions only.

  Closes #12960

- libcurl-docs: cleanups

   CURLMOPT_SOCKETDATA.md: fix typo
   CURLMOPT_TIMERDATA.md: fix typo
   CURLOPT_COOKIELIST.m: quote strings
   CURLOPT_PREREQFUNCTION.md: quote variable names
   CURLOPT_TCP_NODELAY.md: rephrased to please spell checker
   CURLOPT_WILDCARDMATCH.md: rephrased
   libcurl-tutorial.md: use correct option name
   curl_global_init_mem.md: quote headers
   curl_easy_getinfo.md: use correct symbol names in headers
   curl_global_trace.md: quote some headers
   curl_ws_meta.md: quote struct field names
   libcurl-env.md: quote headers

- cd2nroff: remove backticks from titles

- RELEASE-NOTES: synced

Stefan Eissing (18 Feb 2024)

- http_chunks: fix the accounting of consumed bytes

  Prior to this change chunks were handled correctly although in verbose
  mode libcurl could incorrectly warn of "Leftovers after chunking" even
  if there were none.

  Reported-by: Michael Kaufmann

  Fixes https://github.com/curl/curl/issues/12937
  Closes https://github.com/curl/curl/pull/12939

- file: use xfer buf for file:// transfers

  - For file:// transfers use the multi handle's transfer buffer for
    up- and downloads.

  Prior to this change a6c9a33 (precedes 8.6.0) changed the file://
  transfers to use a smaller stack based buffer, and that caused a
  significant performance decrease in Windows.

  Bug: https://github.com/curl/curl/issues/12750#issuecomment-1920103086
  Reported-by: edmcln@users.noreply.github.com

  Closes https://github.com/curl/curl/pull/12932

Karthikdasari0423 (18 Feb 2024)

- HTTP3.md: always run nghttp3 submodule init

  - For consistency change all 'build nghttp3' commands to run submodule
    init after cloning, even if the branch does not have submodules.

  Follow-up to 5a4b2f93 and 4f794558.

  Closes https://github.com/curl/curl/pull/12928

LeeRiva (18 Feb 2024)

- CURLOPT_POSTQUOTE.md: fix typo

  Closes https://github.com/curl/curl/pull/12926

Evgeny Grin (Karlson2k) (18 Feb 2024)

- checksrc.pl: fix handling .checksrc with CRLF

  - When parsing .checksrc chomp the (CR)LF line ending.

  Prior to this change on Windows checksrc.pl would not process the
  symbols in .checksrc properly, since many git repos in Windows use auto
  crlf to check out files with CRLF line endings.

  Closes https://github.com/curl/curl/pull/12924

Richard Levitte (18 Feb 2024)

- cmake: fix install for older CMake versions

  - Generate the docs install list by using a foreach loop instead of
    LIST:TRANSFORM since older CMake can't handle the latter.

  Reported-by: Dan Fandrich

  Fixes https://github.com/curl/curl/issues/12920
  Closes https://github.com/curl/curl/pull/12922

Stefan Eissing (16 Feb 2024)

- vtls: fix tls proxy peer verification

  - When verifying a proxy certificate for an ip address, use the correct
    ip family.

  Prior to this change the "connection" ip family was used, which was not
  necessarily the same.

  Reported-by: HsiehYuho@users.noreply.github.com

  Fixes https://github.com/curl/curl/issues/12831
  Closes https://github.com/curl/curl/pull/12931

Dan Fandrich (15 Feb 2024)

- CI: Bump the Circle CI base Ubuntu image to the latest 20.04

  The previous ones are going to be removed soon, plus the new ones
  include all the fixes since then.

Jay Satiro (13 Feb 2024)

- transfer: improve Windows SO_SNDBUF update limit

  - Change the 1 second SO_SNDBUF update limit from per transfer to per
    connection.

  Prior to this change many transfers over the same connection could cause
  many SO_SNDBUF updates made to that connection per second, which was
  unnecessary.

  Closes https://github.com/curl/curl/pull/12911

- schannel: fix hang on unexpected server close

  - Treat TLS connection close (either due to a close_notify from the
    server or just closed due to receiving 0) as pending data.

  This is because in some cases schannel_recv knows the connection is
  closed but has to return actual pending data so it can't return 0 or an
  error to indicate no more data. In this case schannel_recv must be
  called again, which only happens if readwrite_data sees that there is
  still pending data.

  Prior to this change if the total size of the body that libcurl expected
  to receive from the server was unknown then it was possible under some
  network conditions that libcurl would hang waiting to receive more data,
  when in fact a close_notify alert indicating no more data would be sent
  was already processed.

  Fixes https://github.com/curl/curl/issues/12894
  Closes https://github.com/curl/curl/pull/12910

Daniel Stenberg (10 Feb 2024)

- KNOWN_BUGS: FTP upload fails if remebered dir is deleted

  Closes #12181
  Closes #12923

Michał Antoniak (10 Feb 2024)

- mbedtls: use mbedtls_ssl_conf_{min|max}_tls_version

  ... instead of the deprecated mbedtls_ssl_conf_{min|max}_version

  Closes #12905

Dan Fandrich (9 Feb 2024)

- CI: bump to actions/cache@v4 to avoid warning

Evgeny Grin (Karlson2k) (9 Feb 2024)

- test1165: improve pattern matching

  * Fix excluded digits at the end of the symbols ('CURL_DISABLE_POP3'
    was checked as 'CURL_DISABLE_POP')

  Closes #12903

Dan Fandrich (9 Feb 2024)

- scripts: Fix cijobs.pl for Azure and GHA

  The spacing in the yaml files changed.

Daniel Stenberg (9 Feb 2024)

- RELEASE-NOTES: synced

- TODO: use pkg-config to find libpsl

  Closes #12919

- TODO: avoid nroff

  Instead of adjusting roffit, skip the nroff step.

  Closes #12919

Dan Fandrich (9 Feb 2024)

- Revert "CI: run Circle macOS builds on x86 for now"

  This reverts commit 2683de3078eadc86d9b182e7417f4ee75a247e2c.
  ARM resources are now available in Circle CI, so run these builds on ARM
  again. This platform needs explicit paths set to libpsl and its
  dependency icu4c.

  Follow-up to 2683de30

  Closes #12635

Viktor Szakats (9 Feb 2024)

- cmake: add warning for using TLS libraries without 1.3 support

  Closes #12900

Daniel Stenberg (9 Feb 2024)

- configure: add warning for using TLS libraries without 1.3 support

  Closes #12900

Michał Antoniak (9 Feb 2024)

- mbedtls: fix building when MBEDTLS_X509_REMOVE_INFO flag is defined

  Closes #12904

Stefan Eissing (9 Feb 2024)

- ftp: fix socket wait activity in ftp_domore_getsock

  - when waiting on the data connection, always add the control socket to
    the pollset on state STOP or let the pingpong add the socket according
    to its needs.

  Reported-by: Fabian Vogt
  Fixes #12901
  Closes #12913

Daniel Stenberg (9 Feb 2024)

- dist: make sure the http tests are in the tarball

  Fixes #12914
  Reported-by: Fabian Vogt
  Closes #12917

Stefan Eissing (9 Feb 2024)

- multi: add xfer_buf to multi handle

  - can be borrowed by transfer during recv-write operation
  - needs to be released before borrowing again
  - adjustis size to `data->set.buffer_size`
  - used in transfer.c readwrite_data()

  Closes #12805

Daniel Stenberg (9 Feb 2024)

- write-out.md: clarify error handling details

  - it gets used even if the transfer fails

  - it does not cause error to be returned even if it fails

  Closes #12909

Stefan Eissing (8 Feb 2024)

- ftp: do lineend conversions in client writer

  - remove the ftp special handling from sendf.c
  - let ftp_do() add a client writer that does
    the linened conversions
  - change the lineend conversion to no longer
    modify the passed buffer, but write smaller
    chunks to the next cwriter instead. The
    inefficiency of this will be mitigated once
    we add output buffering for all client writes.

  Closes #12878

- ftp: tracing improvements

  - trace socketindex for connection filters when not the first
  - trace socket fd in tcp
  - trace pollset adjusts in vtls

  Closes #12902

Karthikdasari0423 (8 Feb 2024)

- HTTP3.md: adjust the OpenSSL QUIC install instructions

  tried installing with old steps but failed
  tried with newly added setps and able to build
  ```
  root@ubuntu:~/curl# ./src/curl -V
  /root/curl/src/.libs/curl: /lib/x86_64-linux-gnu/libssl.so.3: version `OPENSS
  L_3.2.0' not found (required by /root/curl/lib/.libs/libcurl.so.4)
  root@ubuntu:~/curl#
  ```
  ```
  root@ubuntu:~/curl# ./src/curl -V
  curl 8.6.1-DEV (x86_64-pc-linux-gnu) libcurl/8.6.1-DEV OpenSSL/3.2.0 zlib/1.2
  .11 brotli/1.0.9 libpsl/0.21.0 nghttp3/1.1.0 OpenLDAP/2.5.16
  Release-Date: [unreleased]
  Protocols: dict file ftp ftps gopher gophers http https imap imaps ipfs ipns 
  ldap ldaps mqtt pop3 pop3s rtsp smb smbs smtp smtps telnet tftp
  Features: alt-svc AsynchDNS brotli HSTS HTTP3 HTTPS-proxy IPv6 Largefile libz
   NTLM PSL SSL threadsafe TLS-SRP UnixSockets
  root@ubuntu:~/curl#
  ```

  Closes #12896

Daniel Stenberg (8 Feb 2024)

- TODO: align the TOC with the header

- docs: make sure curl.1 is included in dist tarballs

  Ref: https://github.com/curl/curl/issues/12832#issuecomment-1933271873

  Closes #12892

Karthikdasari0423 (8 Feb 2024)

- HTTP3.md: remove quiche word in Openssl 3.2

  Closes #12893

Daniel Stenberg (7 Feb 2024)

- curl: when allocating variables, add the name into the struct

  This saves the name from being an extra separate allocation.

  Closes #12891

- lib582: remove code causing warning that is never run

  The previous realloc code in this code could trigger a compiler warning,
  but since that code path cannot happen in normal circumstances it now
  instead exits with an error message there.

  Ref: #12887
  Closes #12890

Stefan Eissing (7 Feb 2024)

- vtls: revert "receive max buffer" + add test case

  - add test_05_04 for requests using http/1.0, http/1.1 and h2 against an
    Apache resource that does an unclean TLS shutdown.
  - revert special workarund in openssl.c for suppressing shutdown errors
    on multiplexed connections
  - vlts.c restore to its state before 9a90c9dd64d2f03601833a70786d485851bd1b53

  Fixes #12885
  Fixes #12844

  Closes #12848

Daniel Stenberg (7 Feb 2024)

- tests: support setting/using blank content env variables

  - test450: remove --config from the keywords
  - test2080: change return code
  - test428: add --config as a keyword
  - test428: disable on Windows due to CI problems

- curl: exit on config file parser errors

  Like when trying to import an environment variable that does not exist.

  Also fix a bug for reading env variables when there is a default value
  set.

  Bug: https://curl.se/mail/archive-2024-02/0008.html
  Reported-by: Brett Buddin

  Add test 462 to verify.

  Closes #12862

Daniel Szmulewicz (7 Feb 2024)

- CURLOPT_WRITEFUNCTION.md: typo fix

  The maximum amount of body data that is <be> passed to the write
  callback is defined in the curl.h header file

  Closes #12889

Daniel Stenberg (7 Feb 2024)

- lib: convert Curl_get_line to use dynbuf

  Create the line in a dynbuf. Aborts the reading of the file on
  errors. Avoids having to always allocate maximum amount from the
  start. Avoids direct malloc.

  Closes #12846

- KNOWN_BUGS: unicode on Windows

  Closes #11461
  Closes #12231
  Closes #12883

- tool_operate: change precedence of server Retry-After time

  - When calculating the retry time, no longer allow a server's requested
    Retry-After time to take precedence over a longer retry time (either
    default algorithmic or user-specified).

  Prior to this change the server's Retry-After time took precedence over
  curl's retry time in all cases, but that's not always practical for
  short Retry-After times depending on how busy the server is.

  Bug: https://curl.se/mail/archive-2024-01/0022.html
  Reported-by: Dirk Hünniger

  Closes https://github.com/curl/curl/pull/12871

- cmdline-docs: quote and angle bracket cleanup

  - make sure angle brackets are escaped
  - remove a lot of superfluous double quotes
  - replace several double quotes with backticks

  To make nicer-looking markdown.

  Closes #12884

- badwords: use hostname, not host name

  and username, filename - consistently. Fixed the patterns in
  badwords.txt to catch these.

  Closes #12888

Viktor Szakats (6 Feb 2024)

- cmake: fix function description in comment [ci skip]

  Closes #12879

Daniel Stenberg (6 Feb 2024)

- header.md: remove backslash, make nicer markdown

  - remove a leftover backslash before a dash
  - use backticks for "code" strings

  Closes #12877

- docs: add mk-ca-bundle.1 to dist

  ... which also makes it get built. But don't build this or curl-config.1
  if build docs is disabled.

  Closes #12875

Stefan Eissing (6 Feb 2024)

- https-proxy: use IP address and cert with ip in alt names

  - improve info logging when peer verification fails to indicate
    if DNS name or ip address has been tried to match
  - add test case for contacting https proxy with ip address
  - add pytest env check on loaded credentials and re-issue
    when they are no longer valid
  - disable proxy ip address test for bearssl, since not supported there

  Ref: #12831
  Closes #12838

Jiawen Geng (6 Feb 2024)

- docs: add necessary setup for nghttp3

  Now nghttp3 has submodules
  https://github.com/ngtcp2/nghttp3/blob/main/.gitmodules

  Closes #12859

Peter Krefting (6 Feb 2024)

- version: allow building with ancient libpsl

  The psl_check_version_number() API was added in libpsl 0.11.0. CentOS 7
  ships with version 0.7.0 which lacks this API. Revert to using the older
  versioning API if we detect an old libpsl version.

  Follow-up to 72bd88adde0e8cf6e63644a7d6df1da01a399db4
  Bug: https://curl.se/mail/archive-2024-02/0004.html
  Reported-by: Scott Mutter
  Closes #12872

Daniel Stenberg (6 Feb 2024)

- TODO: Support latest rustls

  Closes #12737
  Closes #12874

- docs: make curldown do angle brackets like markdown

  Make sure we use \< and \> in markdown all over so that it renders
  correctly, on GitHub and elsewhere. cd2nroff now outputs a warning if it
  finds an unescaled angle bracket.

  Ref: #12854
  Closes #12869

- docs: fix the --disable-docs for autotools

  Follow-up to 541321507e386

  Closes #12870

- RELEASE-NOTES: synced

- libcurl-security.md: Active FTP passes on the local IP address

  Reported-by: Harry Sintonen
  Closes #12867

Stefan Eissing (5 Feb 2024)

- configure: do not link with nghttp3 unless necessary

  Fixes #12833
  Closes #12864
  Reported-by: Ryan Carsten Schmidt

Daniel Stenberg (5 Feb 2024)

- THANKS: add Dmitry Tretyakov

  ... since I missed to give credit to the report in the fix of #12861

Stefan Eissing (5 Feb 2024)

- openssl-quic: check on Windows that socket conv to int is possible

  Fixes #12861
  Closes #12865

Daniel Stenberg (5 Feb 2024)

- tool_cb_hdr: only parse etag + content-disposition for 2xx

  ... and ignore them for other response codes.

  Reported-by: Harry Sintonen
  Closes #12866

- md4: include strdup.h for the memdup proto

  Reported-by: Erik Schnetter
  Fixes #12849
  Closes #12863

Joel Depooter (5 Feb 2024)

- docs: add missing slashes to SChannel client certificate documentation

  When setting the CURLOPT_SSLCERT option to a certificate thumprint, it
  is required to have a backslash between the "store location", "store
  name" and "thumbprint" tokens. These slashes were present in the
  previous documentation, but were missed in the transition to markdown
  documentation.

  Closes #12854

Stefan Eissing (5 Feb 2024)

- HTTP/2: write response directly

  - use the new `Curl_xfer_write_resp()` to write incoming responses
    directly to the client
  - eliminates `stream->recvbuf`
  - memory consumption on parallel transfers minimized

  Closes #12828

Daniel Stenberg (5 Feb 2024)

- cookie.md: provide an example sending a fixed cookie

  Closes #12868

Lars Kellogg-Stedman (5 Feb 2024)

- ALTSVC.md: correct a typo

  The ALPN documentation erroneously referred to a "host number" instead
  of a "port number".

  Closes #12852

Boris Verkhovskiy (5 Feb 2024)

- proxy1.0.md: fix example

  Closes #12856

Chris Webb (5 Feb 2024)

- configure: add --disable-docs flag

  Building man pages from curldown sources now requires perl. Add a
  --disable-docs flag to configure to enable building and installing
  without documentation where perl is not available or man pages are not
  required. This is selected automatically (with a warning) when perl is
  not found by configure.

  Fixes #12832
  Closes #12857

Faraz Fallahi (5 Feb 2024)

- connect.c: fix typo

  Closes #12858

Daniel Stenberg (1 Feb 2024)

- sendf: ignore response body to HEAD

  and mark the stream for close, but return OK since the response this far
  was ok - if headers were received. Partly because this is what curl has
  done traditionally.

  Test 499 verifies. Updates test 689.

  Reported-by: Sergey Bronnikov
  Bug: https://curl.se/mail/lib-2024-02/0000.html
  Closes #12842

- ftp: treat a 226 arriving before data as a signal to read data

  For active mode transfers.

  Due to some interesting timing, curl can sometimes get the 226 (transfer
  complete) over the control channel first, before the data connection
  signals readability. If this happens, use that as a signal to check the
  data connection.

  Additionally, set the socket filter in listen mode *before* the
  PORT/EPRT command is issued, to reduce the risk that the little time gap
  could interfere.

  This issue never reproduced for me on Debian and takes several hundred
  rounds for me to trigger on my mac.

  Reported-by: Stefan Eissing
  Fixes #12823
  Closes #12841

Patrick Monnerat (1 Feb 2024)

- OS400: avoid using awk in the build scripts

  Awk is a PASE program and its use may cause a failure depending on the
  CCSID of the calling script (IBM bug?).

  For this reason, revert to an sed-only solution to extract the exported
  symbols from the header files.

  Closes #12826

Jan Macku (1 Feb 2024)

- docs: remove `mk-ca-bundle.1` from `man_MANS`

  It was accidentally added in https://github.com/curl/curl/pull/12730

  Co-authored-by: Lukáš Zaoral <lzaoral@redhat.com>
  Signed-off-by: Jan Macku <jamacku@redhat.com>

  Follow-up to eefcc1bda4bccd800f5a56a0fe17a2f44a96e88b
  Closes #12843

Daniel Stenberg (1 Feb 2024)

- RELEASE-NOTES: synced

  and bump to 8.6.1 for now

- cmdline-docs/Makefile: avoid using a fixed temp file name

  By appending the pid number two different runs at the same time will not
  trample over the same file.

  Reported-by: Jon Rumsey
  Fixes #12829
  Closes #12839

- asyn-thread: use wakeup_close to close the read descriptor

  Reported-by: Dan Fandrich
  Ref: #12834
  Closes #12836

Stefan Eissing (1 Feb 2024)

- ntml_wb: fix buffer type typo

  Closes #12825

Daniel Stenberg (1 Feb 2024)

- tool_operate: do not set CURLOPT_QUICK_EXIT in debug builds

  Since it allows (small) memory leaks that interfere with torture tests
  and regular memory-leak checks.

  Reported-by: Dan Fandrich
  Fixes #12834
  Closes #12835

Boris Verkhovskiy (31 Jan 2024)

- form-string.md: correct the example

  Closes #12822

Version 8.6.0 (31 Jan 2024)

Daniel Stenberg (31 Jan 2024)

- RELEASE-NOTES: synced

  curl 8.6.0

- THANKS: new contributors from 8.5.0

Jay Satiro (31 Jan 2024)

- cd2nroff: use perl 'strict' and 'warnings'

  - Use strict and warnings pragmas.

  - If open() fails then show the reason.

  - Set STDIN io layer :crlf so that input is properly read on Windows.

  - When STDIN is used as input, the filename $f is now set to "STDIN".

  Various error messages in single() use $f for the filename and this way
  it is not undefined when STDIN.

  Closes https://github.com/curl/curl/pull/12819

Daniel Stenberg (30 Jan 2024)

- cd2nroff: fix duplicate output issue

  Assisted-by: Jay Satiro
  Fixes https://github.com/curl/curl-www/issues/321
  Closes #12818

- lib: error out on multissl + http3

  Since the QUIC/h3 code has no knowledge or handling of multissl it might
  bring unintended consequences if we allow it.

  configure, cmake and curl_setup.h all now reject this combination.

  Assisted-by: Viktor Szakats
  Assisted-by: Gisle Vanem
  Ref: #12806
  Closes #12807

Patrick Monnerat (29 Jan 2024)

- OS400: sync ILE/RPG binding

  Also do not force git CRLF line endings on *.cmd files for OS400.

  Closes #12815

Viktor Szakats (28 Jan 2024)

- build: delete/replace 3 more clang warning pragmas

  - tool_msgs: delete redundant `-Wformat-nonliteral` suppression pragma.

  - whitespace formatting in `mprintf.h`, lib518, lib537.

  - lib518: fix wrong variable in `sizeof()`.

  - lib518: bump variables to `rlim_t`.
    Follow-up to e2b394106d543c4615a60795b7fdce04bd4e5090 #1469

  - lib518: sync error message with lib537
    Follow-up to 365322b8bcf9efb6a361473d227b70f2032212ce

  - lib518, lib537: replace `-Wformat-nonliteral` suppression pragmas
    by reworking test code.

  Follow-up to 5b286c250829e06a135a6ba998e80beb7f43a734 #12812
  Follow-up to aee4ebe59161d0a5281743f96e7738ad97fe1cd4 #12803
  Follow-up to 09230127589eccc7e01c1a7217787ef8e64f3328 #12540
  Follow-up to 3829759bd042c03225ae862062560f568ba1a231 #12489

  Reviewed-by: Daniel Stenberg
  Closes #12814

Richard Levitte (27 Jan 2024)

- cmake: freshen up docs/INSTALL.cmake

  - Turn docs/INSTALL.cmake into a proper markdown file,
    docs/INSTALL-CMAKE.md
  - Move things around to divide the description into configuration,
    building and installing sections
  - Mention the more modern cmake options to configure, build and install,
    but also retain the older variants as fallbacks

  Closes #12772

Viktor Szakats (27 Jan 2024)

- build: delete/replace clang warning pragmas

  - delete redundant warning suppressions for `-Wformat-nonliteral`.
    This now relies on `CURL_PRINTF()` and it's theoratically possible
    that this macro isn't active but the warning is. We're ignoring this
    as a corner-case here.

  - replace two pragmas with code changes to avoid the warnings.

  Follow-up to aee4ebe59161d0a5281743f96e7738ad97fe1cd4 #12803
  Follow-up to 09230127589eccc7e01c1a7217787ef8e64f3328 #12540
  Follow-up to 3829759bd042c03225ae862062560f568ba1a231 #12489

  Reviewed-by: Daniel Stenberg
  Closes #12812

Daniel Stenberg (27 Jan 2024)

- RELEASE-NOTES: synced

- http: only act on 101 responses when they are HTTP/1.1

  For 101 responses claiming to be any other protocol, bail out. This
  would previously trigger an assert.

  Add test 1704 to verify.

  Bug: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=66184
  Closes #12811

Scarlett McAllister (27 Jan 2024)

- _VARIABLES.md: add missing 'be' into the sentence

  Closes #12809

Stefan Eissing (27 Jan 2024)

- mqtt, remove remaining use of data->state.buffer

  Closes #12799

Daniel Stenberg (27 Jan 2024)

- x509asn1: switch from malloc to dynbuf

  Closes #12808

- x509asn1: make utf8asn1str() use dynbuf instead of malloc + memcpy

  Closes #12808

- x509asn1: reduce malloc in Curl_extract_certinfo

  Using dynbuf

  Closes #12808

Jay Satiro (27 Jan 2024)

- THANKS: add Alexander Bartel and Brennan Kinney

  They reported and investigated #10259 which was fixed by 7b2d98df.

  Ref: https://github.com/curl/curl/issues/10259

Daniel Stenberg (26 Jan 2024)

- krb5: add prototype to silence clang warnings on mvsnprintf()

  "error: format string is not a string literal"

  Follow-up to 09230127589eccc7 which made the warning appear

  Assisted-by: Viktor Szakats
  Closes #12803

- x509asn1: remove code for WANT_VERIFYHOST

  No code ever sets this anymore since we dropped gskit

  Follow-up to 78d6232f1f326b9ab4d

  Closes #12804

- socks: reduce the buffer size to 600 (from 8K)

  This is malloc'ed memory and it does not more. Test 742 helps us verify
  this.

  Closes #12789

Stefan Eissing (26 Jan 2024)

- file+ftp: use stack buffers instead of data->state.buffer

  Closes #12789

- vtls: receive max buffer

  - do not only receive one TLS record, but try to fill
    the passed buffer
  - consider <4K remaning space is "filled".

  Closes #12801

Daniel Stenberg (26 Jan 2024)

- docs: do not start lines/sentences with So, But nor And

  Closes #12802

- docs: remove spurious ampersands from markdown

  They were leftovers from the nroff conversion.

  Follow-up to eefcc1bda4bccd800f5a5

  Closes #12800

Patrick Monnerat (26 Jan 2024)

- sasl: make login option string override http auth

  - Use http authentication mechanisms as a default, not a preset.

  Consider http authentication options which are mapped to SASL options as
  a default (overriding the hardcoded default mask for the protocol) that
  is ignored if a login option string is given.

  Prior to this change, if some HTTP auth options were given, sasl mapped
  http authentication options to sasl ones but merged them with the login
  options.

  That caused problems with the cli tool that sets the http login option
  CURLAUTH_BEARER as a side-effect of --oauth2-bearer, because this flag
  maps to more than one sasl mechanisms and the latter cannot be cleared
  individually by the login options string.

  New test 992 checks this.

  Fixes https://github.com/curl/curl/issues/10259
  Closes https://github.com/curl/curl/pull/12790

Stefan Eissing (26 Jan 2024)

- socks: use own buffer instead of data->state.buffer

  Closes #12788

Daniel Stenberg (26 Jan 2024)

- socks: fix generic output string to say SOCKS instead of SOCKS4

  ... since it was also logged for SOCKS5.

  Closes #12797

- test742: test SOCKS5 with max length user, password and hostname

  Adjusted the socksd server accordingly to allow for configuring that
  long user name and password.

  Closes #12797

Stefan Eissing (25 Jan 2024)

- ssh: use stack scratch buffer for seeks

  - instead of data->state.buffer

  Closes #12794

Daniel Stenberg (25 Jan 2024)

- krb5: access the response buffer correctly

  As the pingpong code no longer uses the download buffer.

  Folllow-up to c2d973627bab12ab
  Pointed-out-by: Stefan Eissing
  Closes #12796

Stefan Eissing (25 Jan 2024)

- mqtt: use stack scratch buffer for recv+publish

  - instead of data->state.buffer

  Closes #12792

- telnet, use stack scratch buffer for do

  - instead of data->state.buffer

  Closes #12793

- http, use stack scratch buffer

  - instead of data->state.buffer

  Closes #12791

- ntlm_wb: do not use data->state.buf any longer

  Closes #12787

- gitignore: the generated `libcurl-symbols.md`

  Closes #12795

Daniel Stenberg (25 Jan 2024)

- tool: fix the listhelp generation command

  The previous command line to generate the tool_listhelp.c source file
  broke with 2494b8dd5175cee7.

  Make 'make listhelp' invoked in src/ generate it. Also update the
  comment in the file to mention the right procedure.

  Closes #12786

- http: check for "Host:" case insensitively

  When checking if the user wants to replace the header, the check should
  be case insensitive.

  Adding test 461 to verify

  Found-by: Dan Fandrich
  Ref: #12782
  Closes #12784

Tatsuhiro Tsujikawa (25 Jan 2024)

- configure: add libngtcp2_crypto_boringssl detection

  If OpenSSL is found to be BoringSSL or AWS-LC, and ngtcp2 is requested,
  try to detect libngtcp2_crypto_boringssl.

  Reported-by: ウさん
  Fixes #12724
  Closes #12769

Daniel Stenberg (25 Jan 2024)

- http: remove comment reference to a removed solution

  Follow-up to 58974d25d

  Closes #12785

Stefan Eissing (25 Jan 2024)

- pytest: Scorecard tracking CPU and RSS

  Closes #12765

Graham Campbell (25 Jan 2024)

- GHA: bump ngtcp2, gnutls, mod_h2, quiche

  - ngtcp2 to v1.2.0
  - gnutls to 3.8.3
  - mod_h2 to 2.0.26
  - quiche to 0.20.0

  Closes #12778
  Closes #12779
  Closes #12780
  Closes #12781

Daniel Stenberg (25 Jan 2024)

- ftpserver.pl: send 213 SIZE response without spurious newline

- pingpong: stop using the download buffer

  The pingpong logic now uses its own dynbuf for receiving command
  response data.

  When the "final" response header for a commanad has been received, that
  final line is left first in the recvbuf for the protocols to parse at
  will. If there is additional data behind the final response line, the
  'overflow' counter is indicate how many bytes.

  Closes #12757

- gen.pl: remove bold from .IP used for ##

  Reported-by: Viktor Szakats
  Fixes #12776
  Closes #12777

Viktor Szakats (24 Jan 2024)

- cmake: rework options to enable curl and libcurl docs

  Rework CMake options for building/using curl tool and libcurl manuals.

  - rename `ENABLE_MANUAL` to `ENABLE_CURL_MANUAL`, meaning:
    to build man page and built-in manual for curl tool.

  - rename `BUILD_DOCS` to `BUILD_LIBCURL_DOCS`, meaning:
    to build man pages for libcurl.

  - `BUILD_LIBCURL_DOCS` now works without having to enable
    `ENABLE_CURL_MANUAL` too.

  - drop support for existing CMake-level `USE_MANUAL` option to avoid
    confusion. (It used to work with the effect of current
    `ENABLE_CURL_MANUAL`, but only by accident.)

  Assisted-by: Richard Levitte
  Ref: #12771
  Closes #12773

Daniel Stenberg (24 Jan 2024)

- urlapi: remove assert

  This assert triggers wrongly when CURLU_GUESS_SCHEME and
  CURLU_NO_AUTHORITY are both set and the URL is a single path.

  I think this assert has played out its role. It was introduced in a
  rather big refactor.

  Follow-up to 4cfa5bcc9a

  Reported-by: promptfuzz_ on hackerone
  Closes #12775

Patrick Monnerat (24 Jan 2024)

- tests: avoid int/size_t conversion size/sign warnings

  Closes #12768

Daniel Stenberg (24 Jan 2024)

- GHA: add a job scanning for "bad words" in markdown

  This means words, phrases or things we have decided not to use - words that
  are spelled right according to the dictionary but we want to avoid. In the
  name of consistency and better documentation.

  Closes #12764

Viktor Szakats (23 Jan 2024)

- cmake: speed up curldown processing, enable by default

  - cmake: enable `BUILD_DOCS` by default (this controls converting and
    installing `.3` files from `.md` sources)

  - cmake: speed up generating `.3` files by using a single command per
    directory, instead of a single command per file. This reduces external
    commands by about a thousand. (There remains some CMake logic kicking
    in resulting in 500 -one per file- external `-E touch_nocreate` calls.)

  - cd2nroff: add ability to process multiple input files.

  - cd2nroff: add `-k` option to use the source filename to form the
    output filename. (instead of the default in-file `Title:` line.)

  Follow-up to 3f08d80b2244524646ce86915c585509ac54fb4c
  Follow-up to ea0b575dab86a3c44dd1d547dc500276266aa382 #12753
  Follow-up to eefcc1bda4bccd800f5a56a0fe17a2f44a96e88b #12730

  Closes #12762

Richard Levitte (23 Jan 2024)

- docs: install curl.1 with cmake as well

  Closes #12759

Daniel Stenberg (23 Jan 2024)

- osslq: remove the TLS library from the version output

  Since we only support using a single TLS library at any one time, we
  know that the TLS library for QUIC is the same that is also shown for
  regular TLS.

  Fixes #12763
  Reported-by: Viktor Szakats
  Closes #12767

Stefan Eissing (23 Jan 2024)

- CI: remove unnecessary OpenSSL 3 option `enable-tls1_3`

  .. and switch OpenSSL 3 libdir from lib64 to lib for consistency.

  Closes https://github.com/curl/curl/pull/12758

- GHA: bump nghttp2 version to v1.59.0

  - Switch to v1.59.0 for GHA CI jobs that use a specific nghttp2-version.

  Closes https://github.com/curl/curl/pull/12766

Daniel Stenberg (23 Jan 2024)

- RELEASE-NOTES: synced

- docs/cmdline: change to .md for cmdline docs

   - switch all invidual files documenting command line options into .md,
     as the documentation is now markdown-looking.

   - made the parser treat 4-space indents as quotes

   - switch to building the curl.1 manpage using the "mainpage.idx" file,
     which lists the files to include to generate it, instead of using the
     previous page-footer/headers. Also, those files are now also .md
     ones, using the same format. I gave them underscore prefixes to make
     them sort separately:
     _NAME.md, _SYNOPSIS.md, _DESCRIPTION.md, _URL.md, _GLOBBING.md,
     _VARIABLES.md, _OUTPUT.md, _PROTOCOLS.md, _PROGRESS.md, _VERSION.md,
     _OPTIONS.md, _FILES.md, _ENVIRONMENT.md, _PROXYPREFIX.md,
     _EXITCODES.md, _BUGS.md, _AUTHORS.md, _WWW.md, _SEEALSO.md

   - updated test cases accordingly

  Closes #12751

dependabot[bot] (23 Jan 2024)

- CI: bump actions/cache from 3 to 4

  Bumps [actions/cache](https://github.com/actions/cache) from 3 to 4.
  - [Release notes](https://github.com/actions/cache/releases)
  - [Changelog](https://github.com/actions/cache/blob/main/RELEASES.md)
  - [Commits](https://github.com/actions/cache/compare/v3...v4)

  ---
  updated-dependencies:
  - dependency-name: actions/cache
    dependency-type: direct:production
    update-type: version-update:semver-major
  ...

  Signed-off-by: dependabot[bot] <support@github.com>
  Closes #12756

Daniel Stenberg (23 Jan 2024)

- openssl: when verifystatus fails, remove session id from cache

  To prevent that it gets used in a subsequent transfer that skips the
  verifystatus check since that check can't be done when the session id is
  reused.

  Reported-by: Hiroki Kurosawa
  Closes #12760

Viktor Szakats (23 Jan 2024)

- cmake: add option to disable building docs

Richard Levitte (23 Jan 2024)

- cmake: use curldown to build man pages

  This throws away the previous HTML and PDF producers, to mimic what
  Makefile.am does as faithfully as possible.

  Closes #12753

Daniel Stenberg (23 Jan 2024)

- mksymbolsmanpage.pl: provide references to where the symbol is used

- docs: introduce "curldown" for libcurl man page format

  curldown is this new file format for libcurl man pages. It is markdown
  inspired with differences:

  - Each file has a set of leading headers with meta-data
  - Supports a small subset of markdown
  - Uses .md file extensions for editors/IDE/GitHub to treat them nicely
  - Generates man pages very similar to the previous ones
  - Generates man pages that still convert nicely to HTML on the website
  - Detects and highlights mentions of curl symbols automatically (when
    their man page section is specified)

  tools:

  - cd2nroff: converts from curldown to nroff man page
  - nroff2cd: convert an (old) nroff man page to curldown
  - cdall: convert many nroff pages to curldown versions
  - cd2cd: verifies and updates a curldown to latest curldown

  This setup generates .3 versions of all the curldown versions at build time.

  CI:

  Since the documentation is now technically markdown in the eyes of many
  things, the CI runs many more tests and checks on this documentation,
  including proselint, link checkers and tests that make sure we capitalize the
  first letter after a period...

  Closes #12730

Viktor Szakats (22 Jan 2024)

- libssh2: use `libssh2_session_callback_set2()` with v1.11.1

  To avoid a local hack to pass function pointers and to avoid
  deprecation warnings when building with libssh2 v1.11.1 or newer:
  ```
  lib/vssh/libssh2.c:3324:5: warning: 'libssh2_session_callback_set' is depreca
  ted: since libssh2 1.11.1. Use libssh2_session_callback_set2() [-Wdeprecated-
  declarations]
  lib/vssh/libssh2.c:3326:5: warning: 'libssh2_session_callback_set' is depreca
  ted: since libssh2 1.11.1. Use libssh2_session_callback_set2() [-Wdeprecated-
  declarations]
  ```
  Ref: https://github.com/curl/curl-for-win/actions/runs/7609484879/job/2072082
  1100#step:3:4982

  Ref: https://github.com/libssh2/libssh2/pull/1285
  Ref: https://github.com/libssh2/libssh2/commit/c0f69548be902147ce014ffa40b8db
  3cf1d4b0b4
  Reviewed-by: Daniel Stenberg
  Closes #12754

Daniel Stenberg (22 Jan 2024)

- transfer: make the select_bits_paused condition check both directions

  If there is activity in a direction that is not paused, return false.

  Reported-by: Sergey Bronnikov
  Bug: https://curl.se/mail/lib-2024-01/0049.html
  Closes #12740

Stefan Eissing (22 Jan 2024)

- http3: initial support for OpenSSL 3.2 QUIC stack

  - HTTP/3 for curl using OpenSSL's own QUIC stack together
    with nghttp3
  - configure with `--with-openssl-quic` to enable curl to
    build this. This requires the nghttp3 library
  - implementation with the following restrictions:
    * macOS has to use an unconnected UDP socket due to an
      issue in OpenSSL's datagram implementation
      See https://github.com/openssl/openssl/issues/23251
      This makes connections to non-reponsive servers hang.
    * GET requests will send the indicator that they have
      no body in a separate QUIC packet. This may result
      in processing delays or Transfer-Encodings on proxied
      requests
    * uploads that encounter blocks will use 100% cpu as
      detection of these flow control issue is not working
      (we have not figured out to pry that from OpenSSL).

  Closes #12734

Viktor Szakats (22 Jan 2024)

- cmake: fix `ENABLE_MANUAL` option

  Fix the `ENABLE_MANUAL` option. Set it to default to `OFF`.

  Before this patch `ENABLE_MANUAL=ON` was a no-op, even though it was the
  option designed to enable building and using the built-in curl manual.
  (`USE_MANUAL=ON` option worked for this instead, by accident).

  Ref: https://github.com/curl/curl/pull/12730#issuecomment-1902572409
  Closes #12749

Mohammadreza Hendiani (19 Jan 2024)

- TODO: update broken link to ratelimit-headers draft

  Closes #12741

Daniel Stenberg (19 Jan 2024)

- cmake: when USE_MANUAL=YES, build the curl.1 man page

  Fixes KNOWN_BUG 15.4

  Closes #12742

- cmdline-opts/write-out.d: remove spurious double quotes

Stefan Eissing (19 Jan 2024)

- rtsp: Convert assertion into debug log

  Bug: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=65934

  - write excess bytes to the client where the standard excess bytes
    checks will report any wrongness and fail the transfer

  Fixes #12738
  Closes #12739

Daniel Stenberg (19 Jan 2024)

- headers: remove assert from Curl_headers_push

  The fuzzer managed to reach the function without a terminating CR or LF
  so let's handle it normally. While there, remove the goto.

  Bug: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=65839

  Closes #12721

- curl_easy_getinfo.3: remove the wrong time value count

  It said "six" time values but they are eight by now. Remove the mention
  of the amount.

  Closes #12727

Viktor Szakats (18 Jan 2024)

- mbedtls: fix `-Wnull-dereference` and `-Wredundant-decls`

  - Silence warning in mbedTLS v3.5.1 public headers:
    ```
    ./mbedtls/_x64-linux-musl/usr/include/psa/crypto_extra.h:489:14: warning: r
  edundant redeclaration of 'psa_set_key_domain_parameters' [-Wredundant-decls]
    ./mbedtls/_x64-linux-musl/usr/include/psa/crypto_struct.h:354:14: note: pre
  vious declaration of 'psa_set_key_domain_parameters' was here
    ```
    Ref: https://github.com/libssh2/libssh2/commit/ecec68a2c13a9c63fe8c2dc457ae
  785a513e157c
    Ref: https://github.com/libssh2/libssh2/pull/1226

  - Fix compiler warnings seen with gcc 9.2.0 + cmake unity:
    ```
    ./curl/lib/vtls/mbedtls.c: In function 'mbedtls_bio_cf_read':
    ./curl/lib/vtls/mbedtls.c:189:11: warning: null pointer dereference [-Wnull
  -dereference]
      189 |   nread = Curl_conn_cf_recv(cf->next, data, (char *)buf, blen, &res
  ult);
          |           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  ~~~~
    ./curl/lib/vtls/mbedtls.c: In function 'mbedtls_bio_cf_write':
    ./curl/lib/vtls/mbedtls.c:168:14: warning: null pointer dereference [-Wnull
  -dereference]
      168 |   nwritten = Curl_conn_cf_send(cf->next, data, (char *)buf, blen, &
  result);
          |              ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  ~~~~~~~
    ```

  - delete stray `#else`.

  Closes #12720

Daniel Stenberg (17 Jan 2024)

- docs: cleanup nroff format use

  - remove use of .BI for code snippet
  - stop using .br, just do a blank line
  - remove use of .PP
  - remove use for .sp
  - remove backslash in .IP
  - use .IP instead of .TP

  Closes #12731

Stefan Eissing (17 Jan 2024)

- test2307: fix expected failure code after ws refactoring

  Fixes #12722
  Closes #12728

Jay Satiro (17 Jan 2024)

- cf-socket: show errno in tcpkeepalive error messages

  - If the socket keepalive options (TCP_KEEPIDLE, etc) cannot be set
    then show the errno in the verbose error messages.

  Ref: https://github.com/curl/curl/discussions/12715#discussioncomment-8151652

  Closes https://github.com/curl/curl/pull/12726

- tool_getparam: stop supporting `@filename` style for --cookie

  The `@filename` style was never documented for --cookie <data|filename>
  but prior to this change curl would accept it anyway and always treat a
  @ prefixed string as a filename.

  That's a problem if the string also contains a = sign because then it is
  documented to be interpreted as a cookie string and not a filename.

  Example:

  `--cookie @foo=bar`

  Before: Interpreted as load cookies from filename foo=bar.

  After: Interpreted as cookie `@foo=bar` (name `@foo` and value `bar`).

  Other curl options with a data/filename option-value use the `@filename`
  to distinguish filenames which is probably how this happened. The
  --cookie option has never been documented that way.

  Ref: https://curl.se/docs/manpage.html#-b

  Closes https://github.com/curl/curl/pull/12645

Stefan Eissing (16 Jan 2024)

- websockets: refactor decode chain

  - use client writer stack for decoding frames
  - move websocket protocol handler to ws.c

  Closes #12713

- websockets: check for negative payload lengths

  - in en- and decoding, check the websocket frame payload lengths for
    negative values (from curl_off_t) and error the operation in that case
  - add test 2307 to verify

  Closes #12707

Daniel Stenberg (16 Jan 2024)

- docs: mention env vars not used by schannel

  Ref: #12704

  Co-authored-by: Jay Satiro <raysatiro@yahoo.com>

  Closes #12711

- tool_operate: make --remove-on-error only remove "real" files

  Reported-by: Harry Sintonen
  Assisted-by: Dan Fandrich

  Closes #12710

Jay Wu (16 Jan 2024)

- url: don't set default CA paths for Secure Transport backend

  As the default for this backend is the native CA store.

  Closes #12704

Lin Sun (16 Jan 2024)

- asyn-ares: with modern c-ares, use its default timeout

  Closes #12703

Daniel Stenberg (15 Jan 2024)

- tool_operate: stop setting the file comment on Amiga

  - the URL is capped at 80 cols, which ruins it if longer
  - it does not strip off URL credentials
  - it is done unconditonally, not on --xattr
  - we don't have Amiga in the CI which makes fixing it blindly fragile

  Someone who builds and tests on Amiga can add it back correctly in a
  future if there is a desire.

  Reported-by: Harry Sintonen
  Closes #12709

Stefan Eissing (15 Jan 2024)

- rtsp: deal with borked server responses

  - enforce a response body length of 0, if the
    response has no Content-lenght. This is according
    to the RTSP spec.
  - excess bytes in a response body are forwarded to
    the client writers which will report and fail the
    transfer

  Follow-up to d7b6ce6
  Fixes #12701
  Closes #12706

Daniel Stenberg (14 Jan 2024)

- version: show only the libpsl version, not its dependencies

  The libpsl version output otherwise also includes version number for its
  dependencies, like IDN lib, but since libcurl does not use libpsl's IDN
  functionality those components are not important.

  Ref: https://github.com/curl/curl-for-win/issues/63
  Closes #12700

Brad Harder (14 Jan 2024)

- curl.h: CURLOPT_DNS_SERVERS is only available with c-ares

  Closes #12695

Daniel Stenberg (14 Jan 2024)

- cmdline-opts/gen.pl: error on initital blank line

  After the "---" separator, there should be no blank line and this script
  now errors out if one is detected.

  Ref: #12696
  Closes #12698

- cf-h1-proxy: no CURLOPT_USERAGENT in CONNECT with hyper

  Follow-up to 693cd1679361828a which was incomplete

  Ref #12680
  Closes #12697

- curl_multi_fdset.3: remove mention of null pointer support

  ... since this funtion has not supported null pointer fd_set arguments since
  at least 2006. (That's when I stopped my git blame journey)

  Fixes #12691
  Reported-by: sfan5 on github
  Closes #12692

Mark Huang (14 Jan 2024)

- docs/cmdline: remove unnecessary line breaks

  Closes #12696

Daniel Stenberg (14 Jan 2024)

- transfer: remove warning: Value stored to 'blen' is never read

  Detected by scan-build

  Follow-up from 1cd2f0072f

  Closes #12693

Stefan Eissing (13 Jan 2024)

- lib: replace readwrite with write_resp

  This clarifies the handling of server responses by folding the code for
  the complicated protocols into their protocol handlers. This concerns
  mainly HTTP and its bastard sibling RTSP.

  The terms "read" and "write" are often used without clear context if
  they refer to the connect or the client/application side of a
  transfer. This PR uses "read/write" for operations on the client side
  and "send/receive" for the connection, e.g. server side. If this is
  considered useful, we can revisit renaming of further methods in another
  PR.

  Curl's protocol handler `readwrite()` method been changed:

  ```diff
  -  CURLcode (*readwrite)(struct Curl_easy *data, struct connectdata *conn,
  -                        const char *buf, size_t blen,
  -                        size_t *pconsumed, bool *readmore);
  +  CURLcode (*write_resp)(struct Curl_easy *data, const char *buf, size_t ble
  n,
  +                         bool is_eos, bool *done);
  ```

  The name was changed to clarify that this writes reponse data to the
  client side. The parameter changes are:

  * `conn` removed as it always operates on `data->conn`
  * `pconsumed` removed as the method needs to handle all data on success
  * `readmore` removed as no longer necessary
  * `is_eos` as indicator that this is the last call for the transfer
    response (end-of-stream).
  * `done` TRUE on return iff the transfer response is to be treated as
    finished

  This change affects many files only because of updated comments in
  handlers that provide no implementation. The real change is that the
  HTTP protocol handlers now provide an implementation.

  The HTTP protocol handlers `write_resp()` implementation will get passed
  **all** raw data of a server response for the transfer. The HTTP/1.x
  formatted status and headers, as well as the undecoded response
  body. `Curl_http_write_resp_hds()` is used internally to parse the
  response headers and pass them on. This method is public as the RTSP
  protocol handler also uses it.

  HTTP/1.1 "chunked" transport encoding is now part of the general
  *content encoding* writer stack, just like other encodings. A new flag
  `CLIENTWRITE_EOS` was added for the last client write. This allows
  writers to verify that they are in a valid end state. The chunked
  decoder will check if it indeed has seen the last chunk.

  The general response handling in `transfer.c:466` happens in function
  `readwrite_data()`. This mainly operates now like:

  ```
  static CURLcode readwrite_data(data, ...)
  {
    do {
      Curl_xfer_recv_resp(data, buf)
      ...
      Curl_xfer_write_resp(data, buf)
      ...
    } while(interested);
    ...
  }
  ```

  All the response data handling is implemented in
  `Curl_xfer_write_resp()`. It calls the protocol handler's `write_resp()`
  implementation if available, or does the default behaviour.

  All raw response data needs to pass through this function. Which also
  means that anyone in possession of such data may call
  `Curl_xfer_write_resp()`.

  Closes #12480

Daniel Stenberg (13 Jan 2024)

- RELEASE-NOTES: synced

- TODO: TFTP doesn't convert LF to CRLF for mode=netascii

  Closes #12655
  Closes #12690

- gen: do italics/bold for a range of letters, not just single word

  Previously it would match only on a sequence of non-space, which made it
  miss to highlight for example "public suffix list".

  Updated the recent cookie.d edit from 5da57193b732 to use bold instead
  of italics.

  Closes #12689

- docs: describe and highlight super cookies

  Reported-by: Yadhu Krishna M

  Closes #12687

- configure: when enabling QUIC, check that TLS supports QUIC

  Most importantly perhaps is when using OpenSSL that the used
  build/flavor has the QUIC API: the vanilla OpenSSL does not, only
  BoringSSL, libressl, AWS-LC and quictls do.

  Ref: https://github.com/curl/curl/commit/5d044ad9480a9f556f4b6a252d7533b1ba7f
  e57e#r136780413

  Closes #12683

Stefan Eissing (11 Jan 2024)

- vquic: extract TLS setup into own source

  - separate ngtcp2 specific parts out
  - provide callback during init to allow ngtcp2 to apply its defaults

  Closes #12678

Sergey Markelov (11 Jan 2024)

- multi: remove total timer reset in file_do() while fetching file://

  The total timer is properly reset in MSTATE_INIT.  MSTATE_CONNECT starts
  with resetting the timer that is a start point for further multi states.
  If file://, MSTATE_DO calls file_do() that should not reset the total
  timer.  Otherwise, the total time is always less than the pre-transfer
  and the start transfer times.

  Closes #12682

Daniel Stenberg (11 Jan 2024)

- http_proxy: a blank CURLOPT_USERAGENT should not be used in CONNECT

  Extended test 80 to verify this.

  Reported-by: Stefan Eissing
  Fixes #12680
  Closes #12681

- sectransp: do verify_cert without memdup for blobs

  Since the information is then already stored in memory, this can avoid
  an extra set of malloc + free calls.

  Closes #12679

- hsts: remove assert for zero length domain

  A zero length domain can happen if the HSTS parser is given invalid
  input data which is not unheard of and is done by the fuzzer.

  Follow-up from cfe7902111ae547873

  Bug: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=65661

  Closes #12676

- headers: make sure the trailing newline is not stored

  extended test1940 to verify blank header fields too

  Bug: https://curl.se/mail/lib-2024-01/0019.html
  Reported-by: Dmitry Karpov
  Closes #12675

- curl_easy_header.3: tiny language fix

  Closes #12672

- examples/range.c: add

  Closes #12671

- examples/netrc.c: add

  Closes #12671

- examples/ipv6.c: new example showing IPv6-only internet transfer

  Closes #12671

- examples/address-scope.c: renamed from ipv6.c

  It shows address scope use really

  Closes #12671

Stefan Eissing (9 Jan 2024)

- multi: pollset adjust, init with FIRSTSOCKET during connect

  - `conn->sockfd` is set by `Curl_setup_transfer()`, but that
    is called *after* the connection has been established
  - use `conn->sock[FIRSTSOCKET]` instead

  Follow-up to a0f94800d507de
  Closes #12664

Daniel Stenberg (9 Jan 2024)

- WEBSOCKET.md: remove dead link

- CI: spellcheck/appveyor: invoke configure --without-libpsl

  Follow-up to 2998874bb61ac6

- cmdline/docs/*.d: switch to using ## instead of .IP

  To make the editing easier. To write and to read.

  Closes #12667

- gen.pl: support ## for doing .IP in table-like lists

  Warn on use of .RS/.IP/.RE

  Closes #12667

Jay Satiro (9 Jan 2024)

- cookie.d: Document use of empty string to enable cookie engine

  - Explain that --cookie "" can be used to enable the cookie engine
    without reading any initial cookies.

  As is documented in CURLOPT_COOKIEFILE.

  Ref: https://curl.se/libcurl/c/CURLOPT_COOKIEFILE.html

  Bug: https://github.com/curl/curl/issues/12643#issuecomment-1879844420
  Reported-by: janko-js@users.noreply.github.com

  Closes https://github.com/curl/curl/pull/12646

Daniel Stenberg (9 Jan 2024)

- setopt: use memdup0 when cloning COPYPOSTFIELDS

  Closes #12651

- telnet: use dynbuf instad of malloc for escape buffer

  Previously, send_telnet_data() would malloc + free a buffer every time
  for escaping IAC codes. Now, it reuses a dynbuf for this purpose.

  Closes #12652

- CI: install libpsl or configure --without-libpsl in builds

  As a follow-up to the stricted libpsl check in configure

- configure: make libpsl detection failure cause error

  To force users to explictily disable it if they really don't want it
  used and make it harder to accidentally miss it.

  --without-libpsl is the option to use if PSL is not wanted.

  Closes #12661

- RELEASE-NOTES: synced

- pop3: replace calloc + memcpy with memdup0

  ... and make sure to return error on out of memory.

  Closes #12650

- lib: add debug log outputs for CURLE_BAD_FUNCTION_ARGUMENT

  Closes #12658

- mime: use memdup0 instead of malloc + memcpy

  Closes #12649

- tool_getparam: move the --rate logic into set_rate()

- tool_getparam: switch to an enum for every option

  To make the big switch much easier to read/understand and to make it
  easier to add new options.

- tool_getparam: build post data using dynbuf (more)

- tool_getparam: replace malloc + copy by dynbuf for --data

- tool_getparam: make data_urlencode avoid direct malloc

  use aprintf() instead

- tool_getparam: move the --url-query logic into url_query()

  This function is not doing post at all so it was always weirdly placed.

- tool_getparam: move the --data logic into set_data()

- tool_getparam: unify the cmdline switch() into a single one

  - easier to follow, easier to modify, easier to extend, possibly slightly
    faster

  - each case now has the long option as a comment

- tool_getparam: bsearch cmdline options

  - the option names are now alpha sorted and lookup is a lot faster

  - use case sensitive matching. It was previously case insensitive, but that
    was not documented nor tested.

  - remove "partial match" feature. It was not documented, not tested and
    was always fragile as existing use could break when we add a new
    option

  - lookup short options via a table

  Closes #12631

Gabe (8 Jan 2024)

- COPYING: update copyright year

  Closes #12654

Stefan Eissing (8 Jan 2024)

- url: init conn->sockfd and writesockfd to CURL_SOCKET_BAD

  Also add more tracing to test 19

  Follow-up to a0f9480

  Fixes #12657
  Closes #12659

Daniel Stenberg (8 Jan 2024)

- connect: remove margin from eyeballer alloc

  Presumably leftovers from debugging

  Closes #12647

- ftp: only consider entry path if it has a length

  Follow-up from 8edcfedc1a144f438bd1cdf814a0016cb

  Bug: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=65631

  Avoids a NULL pointer deref.

  Closes #12648

Stefan Eissing (7 Jan 2024)

- transfer: adjust_pollset improvements

  - let `multi_getsock()` initialize the pollset in what the
    transfer state requires in regards to SEND/RECV
  - change connection filters `adjust_pollset()` implementation
    to react on the presence of POLLIN/-OUT in the pollset and
    no longer check CURL_WANT_SEND/CURL_WANT_RECV
  - cf-socket will no longer add POLLIN on its own
  - http2 and http/3 filters will only do adjustments if the
    passed pollset wants to POLLIN/OUT for the transfer on
    the socket. This is similar to the HTTP/2 proxy filter
    and works in stacked filters.

  Closes #12640

Daniel Stenberg (6 Jan 2024)

- ftp: use memdup0 to store the OS from a SYST 215 response

  avoid malloc + direct buffer fiddle

  Closes #12639

- ftp: use dynbuf to store entrypath

  avoid direct malloc

  Closes #12638

Lealem Amedie (6 Jan 2024)

- wolfssl: load certificate *chain* for PEM client certs

  Closes #12634

Stefan Eissing (4 Jan 2024)

- http: adjust_pollset fix

  do not add a socket for POLLIN when the transfer does not want to send
  (for example is paused).

  Follow-up to 47f5b1a

  Reported-by: bubbleguuum on github
  Fixes #12632
  Closes #12633

Daniel Stenberg (3 Jan 2024)

- tool: make parser reject blank arguments if not supported

  Already in the getstr() function that clones the input argument.

  Closes #12620

dependabot[bot] (3 Jan 2024)

- build(deps): bump github/codeql-action from 2 to 3

  Bumps [github/codeql-action](https://github.com/github/codeql-action) from 2 
  to 3.
  - [Release notes](https://github.com/github/codeql-action/releases)
  - [Changelog](https://github.com/github/codeql-action/blob/main/CHANGELOG.md)
  - [Commits](https://github.com/github/codeql-action/compare/v2...v3)

  ---
  updated-dependencies:
  - dependency-name: github/codeql-action
    dependency-type: direct:production
    update-type: version-update:semver-major
  ...

  Signed-off-by: dependabot[bot] <support@github.com>

  Closes #12625

- build(deps): bump actions/checkout from 3 to 4

  Bumps [actions/checkout](https://github.com/actions/checkout) from 3 to 4.
  - [Release notes](https://github.com/actions/checkout/releases)
  - [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
  - [Commits](https://github.com/actions/checkout/compare/v3...v4)

  ---
  updated-dependencies:
  - dependency-name: actions/checkout
    dependency-type: direct:production
    update-type: version-update:semver-major
  ...

  Signed-off-by: dependabot[bot] <support@github.com>

  Closes #12624

- build(deps): bump actions/upload-artifact from 3 to 4

  Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) f
  rom 3 to 4.
  - [Release notes](https://github.com/actions/upload-artifact/releases)
  - [Commits](https://github.com/actions/upload-artifact/compare/v3...v4)

  ---
  updated-dependencies:
  - dependency-name: actions/upload-artifact
    dependency-type: direct:production
    update-type: version-update:semver-major
  ...

  Signed-off-by: dependabot[bot] <support@github.com>

  Closes #12627

- build(deps): bump actions/download-artifact from 3 to 4

  Bumps [actions/download-artifact](https://github.com/actions/download-artifac
  t) from 3 to 4.
  - [Release notes](https://github.com/actions/download-artifact/releases)
  - [Commits](https://github.com/actions/download-artifact/compare/v3...v4)

  ---
  updated-dependencies:
  - dependency-name: actions/download-artifact
    dependency-type: direct:production
    update-type: version-update:semver-major
  ...

  Signed-off-by: dependabot[bot] <support@github.com>

  Closes #12626

Stefan Eissing (3 Jan 2024)

- http3/quiche: fix result code on a stream reset

  - fixes pytest failures in test 07_22
  - aligns CURLcode values on stream reset with ngtcp2

  Closes #12629

Daniel Stenberg (2 Jan 2024)

- setopt: clear mimepost when formp is freed

  A precaution to avoid a possibly dangling pointer left behind.

  Reported-by: Thomas Ferguson
  Fixes #12608
  Closes #12621

Andy Alt (2 Jan 2024)

- CI: Add dependabot.yml

  This will cause dependabot to open a PR when various actions are
  updated, provided that the action maintainer has issued a release.

  Closes #12623

Gisle Vanem (2 Jan 2024)

- content_encoding: change return code to typedef'ed enum

  ... to work around a clang ubsan warning.

  Fixes #12618
  Closes #12622

Daniel Stenberg (2 Jan 2024)

- tool: prepend output_dir in header callback

  When Content-Disposition parsing is used and an output dir is prepended,
  make sure to store that new file name correctly so that it can be used
  for setting the file timestamp when --remote-time is used.

  Extended test 3012 to verify.

  Co-Authored-by: Jay Satiro
  Reported-by: hgdagon on github
  Fixes #12614
  Closes #12617

- test1254: fix typo in name plus shorten it

- RELEASE-NOTES: synced

Viktor Szakats (2 Jan 2024)

- schannel: fix `-Warith-conversion` gcc 13 warning

  ```
  lib/vtls/schannel.c:1201:22: warning: conversion to 'unsigned int' from 'int'
   may change the sign of the result [-Warith-conversion]
   1201 |     *extension_len = *list_len +
        |                      ^
  ```

  Closes #12616

- asyn-thread: silence `-Wcast-align` warning for Windows

  Seen with llvm/clang 17:
  ```
  lib/asyn-thread.c:310:5: warning: cast from 'PCHAR' (aka 'char *') to 'struct
   thread_sync_data *' increases required alignment from 1 to 8 [-Wcast-align]
    310 |     CONTAINING_RECORD(overlapped, struct thread_sync_data, w8.overlap
  ped);
        |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  ~~~~
  .../llvm-mingw/aarch64-w64-mingw32/include/winnt.h:717:48: note: expanded fro
  m macro 'CONTAINING_RECORD'
    717 | #define CONTAINING_RECORD(address,type,field) ((type *)((PCHAR)(addre
  ss) - (ULONG_PTR)(&((type *)0)->field)))
        |                                                ^~~~~~~~~~~~~~~~~~~~~~
  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  ```

  Follow-up to a6bbc87f9e9ffb46a1801dfb983e7534825ed56b #12482

  Ref: https://github.com/curl/curl/pull/12482#issuecomment-1873017261
  Closes #12615

Daniel Stenberg (2 Jan 2024)

- tool_listhelp: regenerate after recent .d updates

  Makes it survive test 1478

  Closes #12612

- test1478: verify src/tool_listhelp.c

  Verify that the source file on disk is identical to the output of gen.pl
  listhelp, as otherwise they are out of sync and need attention.

  Closes #12612

- testutil: make runtests support %include

  Using this instruction, a test case can include the contents of a file
  into the test during the preprocessing.

  Closes #12612

- runtests: for mode="text" on <stdout>, fix newlines on both parts

  Closes #12612

Jay Satiro (2 Jan 2024)

- quiche: return CURLE_HTTP3 on send to invalid stream

  Prior to this change if a send failed on a stream in an invalid state
  (according to quiche) and not marked as closed (according to libcurl)
  then the send function would return CURLE_SEND_ERROR.

  We already have similar code for ngtcp2 to return CURLE_HTTP3 in this
  case.

  Caught by test test_07_upload.py: test_07_22_upload_parallel_fail.

  Fixes https://github.com/curl/curl/issues/12590
  Closes https://github.com/curl/curl/pull/12597

Daniel Stenberg (1 Jan 2024)

- cmdline-opts: update availability for the *-ca-native options

  Closes #12613

Patrick Monnerat (31 Dec 2023)

- openldap: fix STARTTLS

  It was not working anymore since introduction of connection filters.

  Also do not attempt to recover from a failing TLS negotiation with
  CURLUSESSL_TRY.

  Closes #12610

Daniel Stenberg (31 Dec 2023)

- haproxy-clientip.d: document the arg

  The arg keyword was missing and therefore not present in the man page.

  Closes #12611

annalee (29 Dec 2023)

- configure: fix no default int compile error in ipv6 detection

  Closes #12607

Dan Fandrich (28 Dec 2023)

- CI: Fix use of any-glob-to-all-files in the labeler

  Despite its name, this atom acts like one-glob-to-all-files and a
  different syntax with braces must be used to get
  any-glob-to-all-files semantics. Unfortunately, this makes the file
  completely unreadable.

  Ref: https://github.com/actions/labeler/issues/731

Daniel Stenberg (29 Dec 2023)

- CURLOPT_AUTOREFERER.3: mention CURLINFO_REFERER

- CURLINFO_REFERER.3: clarify that it is the *request* header

  That libcurl itself sent in the most recent request

  Closes #12605

Jay Satiro (28 Dec 2023)

- system_win32: fix a function pointer assignment warning

  - Use CURLX_FUNCTION_CAST to suppress a function pointer assignment
    warning.

  a6bbc87f added lookups of some Windows API functions and then cast them
  like `*(FARPROC*)&Curl_funcname = address`. Some versions of gcc warn
  about that as breaking strict-aliasing rules so this PR changes those
  assignments to use CURLX_FUNCTION_CAST.

  Bug: https://github.com/curl/curl/pull/12581#issuecomment-1869804317
  Reported-by: Marcel Raad

  Closes https://github.com/curl/curl/pull/12602

- verify-examples.pl: fail verification on unescaped backslash

  - Check that all backslashes in EXAMPLE are properly escaped.

  eg manpage must always use `\\n` never `\n`.

  This is because the manpage requires we always double blackslash to show
  a single backslash. Prior to this change an erroneous single backslash
  would pass through and compile even though it would not show correctly
  in the manpage.

  Co-authored-by: Daniel Stenberg

  Ref: https://github.com/curl/curl/pull/12588

  Closes https://github.com/curl/curl/pull/12589

- vtls: fix missing multissl version info

  - Fix erroneous buffer copy logic from ff74cef5.

  Prior to this change the MultiSSL version info returned to the user
  was empty.

  Closes https://github.com/curl/curl/pull/12599

Daniel Stenberg (27 Dec 2023)

- KNOWN_BUGS: [RTSP] Some methods do not support response bodies

  Closes #12414

Patrick Monnerat (27 Dec 2023)

- openldap: fix an LDAP crash

  Reported-by: Ozan Cansel
  Fixes #12593
  Closes #12600

Daniel Stenberg (27 Dec 2023)

- getinfo: CURLINFO_QUEUE_TIME_T

  Returns the time, in microseconds, during which this transfer was held
  in a waiting queue before it started "for real". A transfer might be put
  in a queue if after getting started, it cannot create a new connection
  etc due to set conditions and limits imposed by the application.

  Ref: #12293
  Closes #12368

- RELEASE-NOTES: synced

Jay Satiro (26 Dec 2023)

- examples/sendrecv: fix comment line length

  Caught by checksrc.

Haydar Alaidrus (23 Dec 2023)

- CURLOPT_POSTFIELDS.3: fix incorrect C string escape in example

  - Escape inner quotes with two backslashes.

  Two backslashes escapes the backslash for the man page and will show as
  a single backslash.

  eg: "{\\"name\\": \\"daniel\\"}" shows as "{\"name\": \"daniel\"}".

  Closes https://github.com/curl/curl/pull/12588

Viktor Szakats (23 Dec 2023)

- appveyor: tidy-ups

  - replace two remaining backslashes with forward slashes.
  - tidy up the way we form and pass `TFLAGS`.

  Follow-up to 2d4d0c1fd32f5cc3f946c407c8eccd5477b287df #12572

  Closes #12582

Stefan Eissing (22 Dec 2023)

- transfer: fix upload rate limiting, add test cases

  - add test cases for rate limiting uploads for all
    http versions
  - fix transfer loop handling of limits. Signal a re-receive
    attempt only on exhausting maxloops without an EAGAIN
  - fix `data->state.selectbits` forcing re-receive to also
    set re-sending when transfer is doing this.

  Reported-by: Karthikdasari0423 on github
  Fixes #12559
  Closes #12586

Daniel Stenberg (22 Dec 2023)

- mbedtls: free the entropy when threaded

  The entropy_free was never done for threaded builds, causing a small
  (fixed) memory leak.

  Reported-by: RevaliQaQ on github
  Fixes #12584
  Closes #12585

Stefan Eissing (22 Dec 2023)

- http2: improved on_stream_close/data_done handling

  - there seems to be a code path that cleans up easy handles without
    triggering DONE or DETACH events to the connection filters. This
    would explain wh nghttp2 still holds stream user data
  - add GOOD check to easy handle used in on_close_callback to
    prevent crashes, ASSERTs in debug builds.
  - NULL the stream user data early before submitting RST
  - add checks in on_stream_close() to identify UNGOOD easy handles

  Reported-by: Hans-Christian Egtvedt
  Fixes #10936
  Closes #12562

Daniel Stenberg (22 Dec 2023)

- mprintf: overhaul and bugfixes

  In a test case using lots of snprintf() calls using many commonly used
  %-codes per call, this version is around 30% faster than previous
  version.

  It also fixes the #12561 bug which made it not behave correctly when
  given unknown %-sequences. Fixing that flaw required a different take on
  the problem, which resulted in the new two-arrays model.

  lib557: extended - Verify the #12561 fix and test more printf features

  unit1398: fix test: It used a <num>$ only for one argument, which is not
  supported.

  Fixes #12561
  Closes #12563

Viktor Szakats (21 Dec 2023)

- appveyor: replace PowerShell with bash + parallel autotools

  PowerShell works (after a steep development curve), but one property of
  it stuck and kept causing unresolvable usability issues: With
  `$ErrorActionPreference=Stop`, it does abort on failures, but shows only
  the first line of the error message. In `Continue` mode, it shows the
  full error message, but doesn't stop on all errors. Another issue is
  PowerShell considering any stderr output as if the command failed (this
  has been improved in 7.2 (2021-Nov), but fixed versions aren't running
  in CI and will not be for a long time in all test images.)

  Thus, we're going with bash.

  Also:
  - use `-j2` with autotools tests, making them finish 5-15 minutes per
    job faster.
  - omit `POSIX_PATH_PREFIX`.
  - use `WINDIR`.
  - prefer forward slashes.

  Follow-up to: 75078a415d9c769419aed4153d3d525a8eba95af #11999
  Ref: #12444

  Fixes #12560
  Closes #12572

Pavel Pavlov (21 Dec 2023)

- asyn-thread: use GetAddrInfoExW on >= Windows 8

  For doing async DNS resolution instead of starting a thread for each
  request.

  Fixes #12481
  Closes #12482

Daniel Stenberg (21 Dec 2023)

- strerror: repair get_winsock_error()

  It would try to read longer than the provided string and crash.

  Follow-up to ff74cef5d4a0cf60106517a1c7384
  Reported-by: calvin2021y on github
  Fixes #12578
  Closes #12579

- CURLOPT_SSH_*_KEYFILE: clarify

  Closes #12554

ivanfywang (21 Dec 2023)

- ngtcp2: put h3 at the front of alpn

  Closes #12576

Daniel Stenberg (21 Dec 2023)

- test460: verify a command line using --expand with no argument

  This verifies the fix for #12565

- tool_getparam: do not try to expand without an argument

  This would lead to a segfault.

  Fixes #12565
  Reported-by: Geeknik Labs
  Closes #12575

- RELEASE-NOTES: synced

  Bumped version to 8.6.0 because of changes

- Makefile.am: fix the MSVC project generation

  It made the vcxproj files not get included in dist tarballs.

  Regression since 74423b5df4c8117891eb89 (8.5.0)

  Reported-by: iAroc on github
  Fixes #12564
  Closes #12567

zengwei2000 (21 Dec 2023)

- altsvc: free 'as' when returning error

  Closes #12570

  Signed-off-by: zengwei <zengwei1@uniontech.com>

Viktor Szakats (20 Dec 2023)

- build: fix `-Wconversion`/`-Wsign-conversion` warnings

  Fix remaining warnings in examples and tests which are not suppressed
  by the pragma in `lib/curl_setup.h`.

  Silence a toolchain issue causing warnings in `FD_SET()` calls with
  older Cygwin/MSYS2 builds. Likely fixed on 2020-08-03 by:
  https://cygwin.com/git/?p=newlib-cygwin.git;a=commitdiff;h=5717262b8ecfed0f7f
  ab63e2c09c78991e36f9dd

  Follow-up to 2dbe75bd7f3c36837aa06fd87a442bdf3fb7faef #12492

  Closes #12557

- build: fix some `-Wsign-conversion`/`-Warith-conversion` warnings

  - enable `-Wsign-conversion` warnings, but also setting them to not
    raise errors.
  - fix `-Warith-conversion` warnings seen in CI.
    These are triggered by `-Wsign-converion` and causing errors unless
    explicitly silenced. It makes more sense to fix them, there just a few
    of them.
  - fix some `-Wsign-conversion` warnings.
  - hide `-Wsign-conversion` warnings with a `#pragma`.
  - add macro `CURL_WARN_SIGN_CONVERSION` to unhide them on a per-build
    basis.
  - update a CI job to unhide them with the above macro:
    https://github.com/curl/curl/actions/workflows/linux.yml -> OpenSSL -O3

  Closes #12492

- cmake: tidy-up `OtherTests.cmake`

  - make more obvious which detection uses which prep steps.
  - merge and streamline conditions.
  - these should not alter detection results.

  Also align log output messages from
  `Macros.cmake` / `curl_internal_test` with rest of the build.

  Closes #12551

- appveyor: switch to out-of-tree builds

  With cmake and autotools.

  Closes #12550

Daniel Stenberg (19 Dec 2023)

- DEPRECATE.md: mention that NTLM_WB no longer works

  Ref: #12479
  Closes #12553

- CURLOPT_SERVER_RESPONSE_TIMEOUT_MS: add

  Proposed-by: Yifei Kong
  Ref: https://curl.se/mail/lib-2023-11/0023.html
  Closes #12369

Viktor Szakats (18 Dec 2023)

- build: more `-Wformat` fixes

  - memdebug: update to not trigger `-Wformat-nonliteral` warnings.
  - imap: mark `imap_sendf()` with  `CURL_PRINTF()`.
  - tool_msgs: mark static function with `CURL_PRINTF()`.

  Follow-up to 3829759bd042c03225ae862062560f568ba1a231 #12489

  Closes #12540

- windows: delete redundant headers

  `winsock2.h` pulls in `windows.h`. `ws2tcpip.h` pulls in `winsock2.h`.
  `winsock2.h` and `ws2tcpip.h` are also pulled by `curl/curl.h`.

  Keep only those headers that are not already included, or the code under
  it uses something from that specific header.

  Closes #12539

- cmake: prefill/cache `HAVE_STRUCT_SOCKADDR_STORAGE`

  Also add missing include to `OtherTests.cmake`. It didn't cause an issue
  because the parent already included this earlier by chance.

  Closes #12537

Daniel Stenberg (18 Dec 2023)

- runner.pm: fix perl warning when running tests

      Use of uninitialized value $runner::gdbthis in numeric eq (==) at runner.
  pm

  Follow-up from 3dcf301752a09d9

  Closes #12549

- runtests: support -gl. Like -g but for lldb.

  Follow-up to 63b5748

  Invokes the test case via lldb instead of gdb. Since using gdb is such a
  pain on mac, using lldb is sometimes less quirky.

  Closes #12547

- curl.h: add CURLE_TOO_LARGE

  A new error code to be used when an internal field grows too large, like
  when a dynbuf reaches its maximum. Previously it would return
  CURLE_OUT_OF_MEMORY for this, which is highly misleading.

  Ref: #12268
  Closes #12269

- CI/circleci: disable MQTT in the HTTP-only build

  And remove the use of configure options that don't actually exist

  Closes #12546

Yedaya Katsman (18 Dec 2023)

- tests: respect $TMPDIR when creating unix domain sockets

  When running on termux, where $TMPDIR isn't /tmp, running the tests
  failed, since the server config tried creating sockets in /tmp, without
  checking the temp dir config. Use the TMPDIR variable that makes it find
  the correct directory everywhere [0]

  [0] https://perldoc.perl.org/File::Temp#tempfile

  Closes #12545

Viktor Szakats (17 Dec 2023)

- ssh: fix namespace of two local macros

  Avoid using the libssh and libssh2 macro namespaces by prefixing
  these local macro names with `CURL_`.

  Follow-up to 413a0fedd02c8c6df1d294534b8c6e306fcca7a2 #12346

  Reviewed-by: Daniel Stenberg
  Closes #12544

- cmake: whitespace tidy-up in `OtherTests.cmake`

  Closes #12538

Mark Sinkovics (16 Dec 2023)

- cmake: fix generation for system name iOS

  This PR fixes a problem that happens during CMake configuration when
  the `CMAKE_SYSTEM_NAME` set to `iOS` and not `Darwin`. This value is
  available (as far as I remember) version 3.14. The final solution
  (thanks to @vszakats) is to use `APPLE` which contains all the Apple
  platforms https://cmake.org/cmake/help/latest/variable/APPLE.html.

  This issue was found when during vcpkg installation. Running command
  `vcpkg install curl:arm64-ios` and `vcpkg install curl:x64-ios` failed
  with message:
  ```
  CMake Error: try_run() invoked in cross-compiling mode, please set the follow
  ing cache variables appropriately:
     HAVE_H_ERRNO_ASSIGNABLE_EXITCODE (advanced)
  ```
  After this fix, I was able to compile the compile the binary without
  any issue.

  In addition to that fix, this PR also contains an simplification to
  check if the platform is not APPLE.

  Co-authored-by: Viktor Szakats
  Closes #12515

Daniel Stenberg (16 Dec 2023)

- RELEASE-NOTES: synced

Baruch Siach (16 Dec 2023)

- gnutls: fix build with --disable-verbose

  infof() parameters must be defined event with --disable-verbose since
  commit dac293cfb702 ("lib: apache style infof and trace
  macros/functions").

  Move also 'ptr' definition under !CURL_DISABLE_VERBOSE_STRINGS.

  Fixes the following build failure:

  In file included from ../lib/sendf.h:29,
                   from vtls/gtls.c:44:
  vtls/gtls.c: In function 'Curl_gtls_verifyserver':
  vtls/gtls.c:841:34: error: 'version' undeclared (first use in this function);
   did you mean 'session'?
    841 |         gnutls_protocol_get_name(version), ptr);
        |                                  ^~~~~~~

  Closes #12505

Viktor Szakats (16 Dec 2023)

- build: delete unused `HAVE_{GSSHEIMDAL,GSSMIT,HEIMDAL}`

  Stop setting `HAVE_GSSHEIMDAL`, `HAVE_GSSMIT` and `HAVE_HEIMDAL`.
  There was no place in the build system or source code that used them.

  Reviewed-by: Daniel Stenberg
  Closes #12506

- build: remove redundant `CURL_PULL_*` settings

  These macros were not propagated to the source code from CMake.

  autotools set only one of them (`CURL_PULL_SYS_POLL_H`), initially to
  address an AIX issue [1]. This later broke when introducing `system.h`
  [2] without the logic it enabled. A subsequent fix [3] re-added the
  logic, and also enabled it for AIX before its use, directly in
  `system.h`.

  [1] 2012-11-23: 665adcd4b7bcdb7deb638cdc499fbe71f8d777f2
  [2] 2017-03-29: 9506d01ee50d5908138ebad0fd9fbd39b66bd64d #1373
  [3] 2017-08-25: 8a84fcc4b59e8b78d2acc6febf44a43d6bc81b59 #1828 #1833

  Reviewed-by: Daniel Stenberg
  Closes #12502

- system.h: sync mingw `CURL_TYPEOF_CURL_SOCKLEN_T` with other compilers

  Align mingw with the other Windows compilers and use the `int` type for
  `CURL_TYPEOF_CURL_SOCKLEN_T` (and thus for `curl_socklent_t`). This
  makes it unnecessary to make a mingw-specific trick and pull all Windows
  headers early just for this type definition. This type is specific to
  Windows, not to the compiler. mingw-w64's Windows header maps it to
  `int` too.

  With this we also delete all remaining uses of `CURL_PULL_WS2TCPIP_H`.

  [ The official solution is to use `socklen_t` for all Windows compilers.
  In this case we may want to update `curl/curl.h` to pull in Windows
  headers before `system.h`. ]

  Reviewed-by: Daniel Stenberg
  Reviewed-by: Jay Satiro
  Closes #12501

- windows: simplify detecting and using system headers

  - autotools, cmake: assume that if we detect Windows, `windows.h`,
    `winsock2.h` and `ws2tcpip.h` do exist.
  - lib: fix 3 outlier `#if` conditions to use `USE_WINSOCK` instead of
    looking for `winsock2.h`.
  - autotools: merge 3 Windows check methods into one.
  - move Watt-32 and lwIP socket support to `setup-win32.h` from
    `config-win32.h`. It opens up using these with all build tools. Also
    merge logic with Windows Sockets.
  - fix to assume Windows sockets with the mingw32ce toolchain.
    Follow-up to: 2748c64d605b19fb419ae56810ad8da36487a2d4
  - cmake: delete unused variable `signature_call_conv` since
    eb33ccd5332435fa50f1758e5debb869c6942b7f.
  - autotools: simplify `CURL_CHECK_WIN32_LARGEFILE` detection.
  - examples/externalsocket: fix header order.
  - cmake/OtherTests.cmake: delete Windows-specific `_source_epilogue`
    that wasn't used anymore.
  - cmake/OtherTests.cmake: set `WIN32_LEAN_AND_MEAN` for test
    `SIZEOF_STRUCT_SOCKADDR_STORAGE`.

  After this patch curl universally uses `_WIN32` to guard
  Windows-specific logic. It guards Windows Sockets-specific logic with
  `USE_WINSOCK` (this might need further work).

  Reviewed-by: Jay Satiro
  Closes #12495

- build: enable missing OpenSSF-recommended warnings, with fixes

  https://best.openssf.org/Compiler-Hardening-Guides/Compiler-Options-Hardening
  -Guide-for-C-and-C++.html
  as of 2023-11-29 [1].

  Enable new recommended warnings (except `-Wsign-conversion`):

  - enable `-Wformat=2` for clang (in both cmake and autotools).
  - add `CURL_PRINTF()` internal attribute and mark functions accepting
    printf arguments with it. This is a copy of existing
    `CURL_TEMP_PRINTF()` but using `__printf__` to make it compatible
    with redefinting the `printf` symbol:
    https://gcc.gnu.org/onlinedocs/gcc-3.0.4/gcc_5.html#SEC94
  - fix `CURL_PRINTF()` and existing `CURL_TEMP_PRINTF()` for
    mingw-w64 and enable it on this platform.
  - enable `-Wimplicit-fallthrough`.
  - enable `-Wtrampolines`.
  - add `-Wsign-conversion` commented with a FIXME.
  - cmake: enable `-pedantic-errors` the way we do it with autotools.
    Follow-up to d5c0351055d5709da8f3e16c91348092fdb481aa #2747
  - lib/curl_trc.h: use `CURL_FORMAT()`, this also fixes it to enable format
    checks. Previously it was always disabled due to the internal `printf`
    macro.

  Fix them:

  - fix bug where an `set_ipv6_v6only()` call was missed in builds with
    `--disable-verbose` / `CURL_DISABLE_VERBOSE_STRINGS=ON`.
  - add internal `FALLTHROUGH()` macro.
  - replace obsolete fall-through comments with `FALLTHROUGH()`.
  - fix fallthrough markups: Delete redundant ones (showing up as
    warnings in most cases). Add missing ones. Fix indentation.
  - silence `-Wformat-nonliteral` warnings with llvm/clang.
  - fix one `-Wformat-nonliteral` warning.
  - fix new `-Wformat` and `-Wformat-security` warnings.
  - fix `CURL_FORMAT_SOCKET_T` value for mingw-w64. Also move its
    definition to `lib/curl_setup.h` allowing use in `tests/server`.
  - lib: fix two wrongly passed string arguments in log outputs.
    Co-authored-by: Jay Satiro
  - fix new `-Wformat` warnings on mingw-w64.

  [1] https://github.com/ossf/wg-best-practices-os-developers/blob/56c0fde3895b
  fc55c8a973ef49a2572c507b2ae1/docs/Compiler-Hardening-Guides/Compiler-Options-
  Hardening-Guide-for-C-and-C%2B%2B.md

  Closes #12489

- Makefile.mk: drop Windows support

  And DLL-support with it. This leaves `Makefile.mk` for MS-DOS and Amiga.

  We recommend CMake instead. With unity mode it's much faster, and about
  the same without.

  Ref: https://github.com/curl/curl/pull/12221#issuecomment-1783761806
  Reviewed-by: Daniel Stenberg
  Closes #12224

Daniel Stenberg (16 Dec 2023)

- cmdline-docs: use .IP consistently

  Remove use of .TP and some .B. The idea is to reduce nroff syntax as
  much as possible and to use it consistently. Ultimately, we should be
  able to introduce our own easier-to-use-and-read syntax/formatting and
  convert on generation time.

  Closes #12535

Tatsuhiko Miyagawa (16 Dec 2023)

- http: fix off-by-one error in request method length check

  It should allow one more byte.

  Closes #12534

Daniel Stenberg (15 Dec 2023)

- curl: show ipfs and ipns as supported "protocols"

  They are accepted schemes in URLs passed to curl (the tool, not the
  library).

  Also makes curl-config show the same list.

  Co-Authored-by: Jay Satiro
  Reported-by: Chara White
  Bug: https://curl.se/mail/archive-2023-12/0026.html
  Closes #12508

- Revert "urldata: move async resolver state from easy handle to connectdata"

  This reverts commit 56a4db2e4e2bcb9a0dcb75b83560a78ef231fcc8 (#12198)

  We want the c-ares channel to be held in the easy handle, not per
  connection - for performance.

  Closes #12524

Viktor Szakats (15 Dec 2023)

- openssl: re-match LibreSSL deinit with init

  Earlier we switched to use modern initialization with LibreSSL v2.7.0
  and up, but did not touch deinitialization [1]. Fix it in this patch.

  Regression from bec0c5bbf34369920598678161d2df8bea0e243b #11611

  [1] https://github.com/curl/curl/pull/11611#issuecomment-1668654014

  Reported-by: Mike Hommey
  Reviewed-by: Daniel Stenberg
  Fixes #12525
  Closes #12526

Daniel Stenberg (14 Dec 2023)

- libssh: supress warnings without version check

  Define unconditionally.

  Follow-up from d21bd2190c46ad7fa

  Closes #12523

- hostip: return error immediately when Curl_ip2addr() fails

  Closes #12522

Theo (14 Dec 2023)

- libssh: improve the deprecation warning dismissal

  Previous code was compiler dependant, and dismissed all deprecation warnings
  indiscriminately.

  libssh provides a way to disable the deprecation warnings for libssh only, an
  d
  naturally this is the preferred way.

  This commit uses that, to prevent the erroneous hiding of potential, unrelate
  d
  deprecation warnings.

  Fixes #12519
  Closes #12520

Daniel Stenberg (14 Dec 2023)

- test1474: removed

  The test was already somewhat flaky and disabled on several platforms,
  and after 1da640abb688 even more unstable.

- readwrite_data: loop less

  This function is made to loop in order to drain incoming data
  faster. Completely removing the loop has a measerably negative impact on
  transfer speeds.

  Downsides with the looping include

  - it might call the progress callback much more seldom. Especially if
    the write callback is slow.

  - rate limiting becomes less exact

  - a single transfer might "starve out" other parallel transfers

  - QUIC timers for other connections can't be maintained correctly

  The long term fix should be to remove the loop and optimize coming back
  to avoid the transfer speed penalty.

  This fix lower the max loop count to reduce the starvation problem, and
  avoids the loop completely for when rate-limiting is in progress.

  Ref: #12488
  Ref: https://curl.se/mail/lib-2023-12/0012.html
  Closes #12504

Stefan Eissing (14 Dec 2023)

- lib: eliminate `conn->cselect_bits`

  - use `data->state.dselect_bits` everywhere instead
  - remove `bool *comeback` parameter as non-zero
    `data->state.dselect_bits` will indicate that IO is
    incomplete.

  Closes #12512

- connect: refactor `Curl_timeleft()`

  - less local vars, "better" readability
  - added documentation

  Closes #12518

Dmitry Karpov (14 Dec 2023)

- cookie: avoid fopen with empty file name

  Closes #12514

Viktor Szakats (13 Dec 2023)

- tests/server: delete workaround for old-mingw

  mingw-w64 1.0 comes with w32api v3.12, thus doesn't need this.

  Follow-up to 38029101e2d78ba125732b3bab6ec267b80a0e72 #11625

  Reviewed-by: Jay Satiro
  Closes #12510

- cmake: delete obsolete TODOs more [ci skip]

  - manual completed: 898b012a9bf388590c4be7f526815b5ab74feca1 #1288
  - soname completed: 5de6848f104d7cb0017080e31216265ac19d0dde #10023
  - bunch of others that are completed
  - `NTLM_WB_ENABLED` is implemented in a basic form, and now also
    scheduled for removal, so a TODO at this point isn't useful.

  And this 'to-check' item:

  Q: "The cmake build selected to run gcc with -fPIC on my box while the
     plain configure script did not."

  A: With CMake, since 2ebc74c36a19a1700af394c16855ce144d9878e3 #11546
     and fc9bfb14520712672b4784e8b48256fb29204011 #11627, we explicitly
     enable PIC for libcurl shared lib. Or when building libcurl for
     shared and static lib in a single pass. We do this by default for
     Windows or when enabled by the user via `SHARE_LIB_OBJECT`.
     Otherwise we don't touch this setting. Meaning the default set by
     CMake (if any) or the toolchain is used. On Debian Bookworm, this
     means that PIC is disabled for static libs by default. Some platforms
     (like macOS), has PIC enabled by default.
     autotools supports the double-pass mode only, and in that case
     CMake seems to match PIC behaviour now (as tested on Linux with gcc.)

  Follow-up to 5d5dfdbd1a6c40bd75e982b66f49e1fa3a7eeae7 #12500

  Reviewed-by: Jay Satiro
  Closes #12509

Stefan Eissing (12 Dec 2023)

- CLIENT-WRITERS: design and use documentation

  Closes #12507

Viktor Szakats (12 Dec 2023)

- cmake: delete obsolete TODO items [ci skip]

  There is always room for improvement, but CMake is up to par now with
  autotools, so there is no longer a good reason to keep around these
  inline TODO items.

  Answering one of questions:

  Q: "The gcc command line use neither -g nor any -O options. As a
     developer, I also treasure our configure scripts's --enable-debug
     option that sets a long range of "picky" compiler options."

  A: CMake offers the `CMAKE_BUILD_TYPE` variable to control debug info
     and optimization level. E.g.:
     - `Release`    = `-O3` + no debug info
     - `MinSizeRel` = `-Os` + no debug info
     - `Debug`      = `-O0` + debug info

     https://stackoverflow.com/questions/48754619/what-are-cmake-build-type-deb
  ug-release-relwithdebinfo-and-minsizerel/59314670#59314670
     https://cmake.org/cmake/help/latest/manual/cmake-buildsystem.7.html#defaul
  t-and-custom-configurations

     For picky warnings we have the `PICKY_COMPILER` options, enabled by
     default.

  Closes #12500

Stefan Eissing (11 Dec 2023)

- CONNECTION-FILTERS: update documentation

  Closes #12497

Daniel Stenberg (11 Dec 2023)

- lib: reduce use of strncpy

  - bearssl: select cipher without buffer copies
  - http_aws_sigv4: avoid strncpy, require exact timestamp length
  - http_aws_sigv4: use memcpy isntead of strncpy
  - openssl: avoid strncpy calls
  - schannel: check for 1.3 algos without buffer copies
  - strerror: avoid strncpy calls
  - telnet: avoid strncpy, return error on too long inputs
  - vtls: avoid strncpy in multissl_version()

  Closes #12499

- CI/distcheck: run full tests

  To be able to detect missing files better, this now runs the full CI
  test suite. If done before, it would have detected #12462 before
  release.

  Closes #12503

- docs: clean up Protocols: for cmdline options

  ... and some other minor polish.

  Closes #12496

- cmdline/gen: fix the sorting of the man page options

  They were previously sorted based on the file names, which use a .d
  extension, making "data" get placed after "data-binary" etc. Making the
  sort ignore the extention fixes the ordering.

  Reported-by: Boris Verkhovskiy
  Bug: https://curl.se/mail/archive-2023-12/0014.html
  Closes #12494

Daniel Gustafsson (9 Dec 2023)

- doh: remove unused local variable

  The nurl variable is no longer used during probing following
  a refactoring, so remove.

  Closes #12491

Jay Satiro (8 Dec 2023)

- build: fix Windows ADDRESS_FAMILY detection

  - Include winsock2.h for Windows ADDRESS_FAMILY detection.

  Prior to this change cmake detection didn't work because it included
  ws2def.h by itself, which is missing needed types from winsock2.h.

  Prior to this change autotools detection didn't work because it did not
  include any Windows header.

  In both cases libcurl would fall back on unsigned short as the address
  family type, which is the same as ADDRESS_FAMILY.

  Co-authored-by: Viktor Szakats

  Closes https://github.com/curl/curl/pull/12441

Daniel Stenberg (8 Dec 2023)

- lib: rename Curl_strndup to Curl_memdup0 to avoid misunderstanding

  Since the copy does not stop at a null byte, let's not call it anything
  that makes you think it works like the common strndup() function.

  Based on feedback from Jay Satiro, Stefan Eissing and Patrick Monnerat

  Closes #12490

- convsrctest.pl: removed: not used, not shipped in tarballs

- tests: rename tests scripts to the test number

  It is hard to name the scripts sensibly. Lots of them are similarly
  named and the name did not tell which test that used them.

  The new approach is rather to name them based on the test number that
  runs them. Also helps us see which scripts are for individual tests
  rather than for general test infra.

   - badsymbols.pl -> test1167.pl
   - check-deprecated.pl -> test1222.pl
   - check-translatable-options.pl -> test1544.pl
   - disable-scan.pl -> test1165.pl
   - error-codes.pl -> test1175.pl
   - errorcodes.pl -> test1477.pl
   - extern-scan.pl -> test1135.pl
   - manpage-scan.pl -> test1139.pl
   - manpage-syntax.pl -> test1173.pl
   - markdown-uppercase.pl -> test1275.pl
   - mem-include-scan.pl -> test1132.pl
   - nroff-scan.pl -> test1140.pl
   - option-check.pl -> test1276.pl
   - options-scan.pl -> test971.pl
   - symbol-scan.pl -> test1119.pl
   - version-scan.pl -> test1177.pl

  Closes #12487

Michał Antoniak (8 Dec 2023)

- sendf: fix compiler warning with CURL_DISABLE_HEADERS_API

  fix MSVC warning C4189: 'htype': local variable is initialized but not
  referenced - when CURL_DISABLE_HEADERS_API is defined.

  Closes #12485

Viktor Szakats (8 Dec 2023)

- tidy-up: whitespace

  Closes #12484

Stefan Eissing (7 Dec 2023)

- test_02_download: fix paramters to test_02_27

  - it is a special client that only ever uses http/2

  Closes #12467

Michał Antoniak (7 Dec 2023)

- vtls: remove the Curl_cft_ssl_proxy object if CURL_DISABLE_PROXY

  Closes #12459

Daniel Stenberg (7 Dec 2023)

- lib: strndup/memdup instead of malloc, memcpy and null-terminate

   - bufref: use strndup
   - cookie: use strndup
   - formdata: use strndup
   - ftp: use strndup
   - gtls: use aprintf instead of malloc + strcpy * 2
   - http: use strndup
   - mbedtls: use strndup
   - md4: use memdup
   - ntlm: use memdup
   - ntlm_sspi: use strndup
   - pingpong: use memdup
   - rtsp: use strndup instead of malloc, memcpy and null-terminate
   - sectransp: use strndup
   - socks_gssapi.c: use memdup
   - vtls: use dynbuf instead of malloc, snprintf and memcpy
   - vtls: use strdup instead of malloc + memcpy
   - wolfssh: use strndup

  Closes #12453

- strdup: remove the memchr check from Curl_strndup

  It makes it possible to clone a binary chunk of data.

  Closes #12453

- ftp: handle the PORT parsing without allocation

  Also reduces amount of *cpy() calls.

  Closes #12456

- RELEASE-NOTES: synced

  Bumped to 8.5.1

- url: for disabled protocols, mention if found in redirect

  To help users better understand where the URL (and denied scheme) comes
  from. Also removed "in libcurl" from the message, since the disabling
  can be done by the application.

  The error message now says "not supported" or "disabled" depending on
  why it was denied:

   Protocol "hej" not supported
   Protocol "http" disabled

  And in redirects:

   Protocol "hej" not supported (in redirect)
   Protocol "http" disabled (in redirect)

  Reported-by: Mauricio Scheffer
  Fixes #12465
  Closes #12469

Stefan Eissing (6 Dec 2023)

- sectransp_ make TLSCipherNameForNumber() available in non-verbose config

  Reported-by: Cajus Pollmeier
  Closes #12476
  Fixes #12474

YX Hao (6 Dec 2023)

- lib: fix variable undeclared error caused by `infof` changes

  `--disable-verbose` yields `CURL_DISABLE_VERBOSE_STRINGS` defined.
  `infof` isn't `Curl_nop_stmt` anymore: dac293c.

  Follow-up to dac293c

  Closes #12470

Viktor Szakats (6 Dec 2023)

- tidy-up: fix yamllint whitespace issues in labeler.yml

  Follow-up to bda212911457c6fadfbba50be61afc4ca513fa56 #12466

  Reviewed-by: Dan Fandrich
  Closes #12475

- tidy-up: fix yamllint whitespace issues

  Closes #12466

Chris Sauer (6 Dec 2023)

- cmake: fix typo

  Follow-up to aace27b
  Closes #12464

Daniel Stenberg (6 Dec 2023)

- dist: add tests/errorcodes.pl to the tarball

  Used by test 1477

  Reported-by: Xi Ruoyao
  Follow-up to 0ca3a4ec9a7
  Fixes #12462
  Closes #12463

Dan Fandrich (6 Dec 2023)

- github/labeler: update a missed key in the v5 upgrade

  Follow-up to ce03fe3ba

Version 8.5.0 (6 Dec 2023)

Daniel Stenberg (6 Dec 2023)

- RELEASE-NOTES: synced

  The curl 8.5.0 release.

Dan Fandrich (5 Dec 2023)

- github/labeler: switch from the beta to labeler v5

  Some keys were renamed and the dot option was made default.

  Closes #12458

Daniel Stenberg (5 Dec 2023)

- DEPRECATE: remove NTLM_WB in June 2024

  Ref: https://curl.se/mail/lib-2023-12/0010.html

  Closes #12451

Jacob Hoffman-Andrews (4 Dec 2023)

- rustls: implement connect_blocking

  Closes #11647

Daniel Stenberg (4 Dec 2023)

- examples/rtsp-options.c: add

  Just a bare bones RTSP example using CURLOPT_RTSP_SESSION_ID and
  CURLOPT_RTSP_REQUEST set to CURL_RTSPREQ_OPTIONS.

  Closes #12452

Stefan Eissing (4 Dec 2023)

- ngtcp2: ignore errors on unknown streams

  - expecially in is_alive checks on connections, we might
    see incoming packets on streams already forgotten and closed,
    leading to errors reported by nghttp3. Ignore those.

  Closes #12449

Daniel Stenberg (4 Dec 2023)

- docs: make all examples in all libcurl man pages compile

  Closes #12448

- checksrc.pl: support #line instructions

  makes it identify the correct source file and line

- GHA/man-examples: verify libcurl man page examples

- verify-examples.pl: verify that all man page examples compile clean

- RELEASE-NOTES: synced

Graham Campbell (2 Dec 2023)

- http3: bump ngtcp2 and nghttp3 versions

  nghttp3 v1.1.0
  ngtcp2 v1.1.0

  In docs and CI

  Closes #12446

- CI/quiche: use `3.1.4+quic` consistently in CI workflows

  Closes #12447

Viktor Szakats (2 Dec 2023)

- test1545: disable deprecation warnings

  Fixes:
  https://ci.appveyor.com/project/curlorg/curl/builds/48631551/job/bhx74e0i66yr
  p6pk#L1205

  Same with details:
  https://ci.appveyor.com/project/curlorg/curl/builds/48662893/job/ol8a78q9gmil
  b6wt#L1263
  ```
  tests/libtest/lib1545.c:38:3: error: 'curl_formadd' is deprecated: since 7.56
  .0. Use curl_mime_init() [-Werror=deprecated-declarations]
     38 |   curl_formadd(&m_formpost, &lastptr, CURLFORM_COPYNAME, "file",
        |   ^~~~~~~~~~~~
  [...]
  ```

  Follow-up to 07a3cd83e0456ca17dfd8c3104af7cf45b7a1ff5 #12421

  Fixes #12445
  Closes #12444

Daniel Stenberg (2 Dec 2023)

- INSTALL: update list of ports and CPU archs

- symbols-in-versions: the CLOSEPOLICY options are deprecated

  The were used with the CURLOPT_CLOSEPOLICY option, which *never* worked.

z2_ (1 Dec 2023)

- build: fix builds that disable protocols but not digest auth

  - Build base64 functions if digest auth is not disabled.

  Prior to this change if some protocols were disabled but not digest auth
  then a build error would occur due to missing base64 functions.

  Fixes https://github.com/curl/curl/issues/12440
  Closes https://github.com/curl/curl/pull/12442

Michał Antoniak (1 Dec 2023)

- connect: reduce number of transportation providers

  Use only the ones necessary - the ones that are built-in. Saves a few
  bytes in the resulting code.

  Closes #12438

David Benjamin (1 Dec 2023)

- vtls: consistently use typedef names for OpenSSL structs

  The foo_st names don't appear in OpenSSL public API documentation. The
  FOO typedefs are more common. This header was already referencing
  SSL_CTX via <openssl/ssl.h>. There is a comment about avoiding
  <openssl/x509v3.h>, but OpenSSL actually declares all the typedefs in
  <openssl/ossl_typ.h>, which is already included by <openssl/ssl.h> (and
  every other OpenSSL header), so just use that. Though I've included it
  just to be explicit.

  (I'm also fairly sure including <openssl/ssl.h> already triggers the
  Schannel conflicts anyway. The comment was probably just out of date.)

  Closes #12439

Lau (1 Dec 2023)

- libcurl-security.3: fix typo

  Fixed minimal typo.

  Closes #12437

Stefan Eissing (1 Dec 2023)

- ngtcp2: fix races in stream handling

  - fix cases where ngtcp2 invokes callbacks on streams that
    nghttp3 has already forgotten. Ignore the NGHTTP3_ERR_STREAM_NOT_FOUND
    in these cases as it is normal behaviour.

  Closes #12435

Emanuele Torre (1 Dec 2023)

- tool_writeout_json: fix JSON encoding of non-ascii bytes

  char variables if unspecified can be either signed or unsigned depending
  on the platform according to the C standard; in most platforms, they are
  signed.

  This meant that the  *i<32  waas always true for bytes with the top bit
  set. So they were always getting encoded as \uXXXX, and then since they
  were also signed negative, they were getting extended with 1s causing
  '\xe2' to be expanded to \uffffffe2, for example:

    $ curl --variable 'v=“' --expand-write-out '{{v:json}}\n' file:///dev/nul
  l
    \uffffffe2\uffffff80\uffffff9c

  I fixed this bug by making the code use explicitly unsigned char*
  variables instead of char* variables.

  Test 268 verifies

  Reported-by: iconoclasthero
  Closes #12434

Stefan Eissing (1 Dec 2023)

- cf-socket: TCP trace output local address used in connect

  Closes #12427

Jay Satiro (1 Dec 2023)

- CURLINFO_PRETRANSFER_TIME_T.3: fix time explanation

  - Change CURLINFO_PRETRANSFER_TIME_T explanation to say that it
    includes protocol-specific instructions that trigger a transfer.

  Prior to this change it explicitly said that it did not include those
  instructions in the time, but that is incorrect.

  The change is a copy of the fixed explanation already in
  CURLINFO_PRETRANSFER_TIME, fixed by ec8dcd7b.

  Reported-by: eeverettrbx@users.noreply.github.com

  Fixes https://github.com/curl/curl/issues/12431
  Closes https://github.com/curl/curl/pull/12432

Daniel Stenberg (30 Nov 2023)

- multi: during ratelimit multi_getsock should return no sockets

  ... as there is nothing to wait for then, it just waits. Otherwise, this
  causes much more CPU work and updates than necessary during ratelimit
  periods.

  Ref: https://curl.se/mail/lib-2023-11/0056.html
  Closes #12430

Dmitry Karpov (30 Nov 2023)

- transfer: abort pause send when connection is marked for closing

  This handles cases of some bi-directional "upgrade" scenarios
  (i.e. WebSockets) where sending is paused until some "upgrade" handshake
  is completed, but server rejects the handshake and closes the
  connection.

  Closes #12428

Daniel Stenberg (28 Nov 2023)

- RELEASE-NOTES: synced

- openssl: when a session-ID is reused, skip OCSP stapling

  Fixes #12399
  Reported-by: Alexey Larikov
  Closes #12418

- test1545: test doing curl_formadd twice with missing file

  Reproduces #12410
  Verifies the fix
  Closes #12421

- Curl_http_body: cleanup properly when Curl_getformdata errors

  Reported-by: yushicheng7788 on github
  Based-on-work-by: yushicheng7788 on github
  Fixes #12410
  Closes #12421

- test1477: verify that libcurl-errors.3 and public headers are synced

  The script errorcodes.pl extracts all error codes from all headers and
  checks that they are all documented, then checks that all documented
  error codes are also specified in a header file.

  Closes #12424

- libcurl-errors.3: sync with current public headers

  Closes #12424

Stefan Eissing (28 Nov 2023)

- test459: fix for parallel runs

  - change warniing message to work better with varying filename
    length.
  - adapt test output check to new formatting

  Follow-up to 97ccc4479f77ba3191c6
  Closes #12423

Daniel Stenberg (27 Nov 2023)

- tool_cb_prg: make the carriage return fit for wide progress bars

  When the progress bar was made max width (256 columns), the fly()
  function attempted to generate its output buffer too long so that the
  trailing carriage return would not fit and then the output would show
  wrongly. The fly function is called when the expected total transfer is
  unknown, which could be one or more progress calls before the actual
  progress meter get shown when the expected transfer size is provided.

  This new take also replaces the msnprintf() call with a much simpler
  memset() for speed.

  Reported-by: Tim Hill
  Fixes #12407
  Closes #12415

- tool_parsecfg: make warning output propose double-quoting

  When the config file parser detects a word that *probably* should be
  quoted, mention double-quotes as a possible remedy.

  Test 459 verifies.

  Proposed-by: Jiehong on github
  Fixes #12409
  Closes #12412

Jay Satiro (26 Nov 2023)

- curl.rc: switch out the copyright symbol for plain ASCII

  .. like we already do for libcurl.rc.

  libcurl.rc copyright symbol used to cause a "non-ascii 8-bit codepoint"
  warning so it was switched to ascii.

  Ref: https://github.com/curl/curl/commit/1ca62bb5#commitcomment-133474972

  Suggested-by: Robert Southee

  Closes https://github.com/curl/curl/pull/12403

Daniel Stenberg (26 Nov 2023)

- conncache: use the closure handle when disconnecting surplus connections

  Use the closure handle for disconnecting connection cache entries so
  that anything that happens during the disconnect is not stored and
  associated with the 'data' handle which already just finished a transfer
  and it is important that details from the unrelated disconnect does not
  taint meta-data in the data handle.

  Like storing the response code.

  This also adjust test 1506. Unfortunately it also removes a key part of
  the test that verifies that a connection is closed since when this
  output vanishes (because the closure handle is used), we don't know
  exactly that the connection actually gets closed in this test...

  Reported-by: ohyeaah on github
  Fixes #12367
  Closes #12405

- RELEASE-NOTES: synced

Stefan Eissing (24 Nov 2023)

- quic: make eyeballers connect retries stop at weird replies

  - when a connect immediately goes into DRAINING state, do
    not attempt retries in the QUIC connection filter. Instead,
    return CURLE_WEIRD_SERVER_REPLY
  - When eyeballing, interpret CURLE_WEIRD_SERVER_REPLY as an
    inconclusive answer. When all addresses have been attempted,
    rewind the address list once on an inconclusive answer.
  - refs #11832 where connects were retried indefinitely until
    the overall timeout fired

  Closes #12400

Daniel Stenberg (24 Nov 2023)

- CI: verify libcurl function SYNPOSIS sections

  With the .github/scripits/verify-synopsis.pl script

  Closes #12402

- docs/libcurl: SYNSOPSIS cleanup

  - use the correct include file
  - make sure they are declared as in the header file
  - fix minor nroff syntax mistakes (missing .fi)

  These are verified by verify-synopsis.pl, which extracts the SYNPOSIS
  code and runs it through gcc.

  Closes #12402

- sendf: fix comment typo

- fopen: allocate the dir after fopen

  Move the allocation of the directory name down to after the fopen() call
  to allow that shortcut code path to avoid a superfluous malloc+free
  cycle.

  Follow-up to 73b65e94f35311

  Closes #12398

Stefan Eissing (24 Nov 2023)

- transfer: cleanup done+excess handling

  - add `SingleRequest->download_done` as indicator that
    all download bytes have been received
  - remove `stop_reading` bool from readwrite functions
  - move excess body handling into client download writer

  Closes #12371

Daniel Stenberg (23 Nov 2023)

- fopen: create new file using old file's mode

  Because the function renames the temp file to the target name as a last
  step, if the file was previously owned by a different user, not ORing
  the old mode could otherwise end up creating a file that was no longer
  readable by the original owner after save.

  Reported-by: Loïc Yhuel
  Fixes #12299
  Closes #12395

- test1476: require proxy

  Follow-up from 323df4261c3542

  Closes #12394

- fopen: create short(er) temporary file name

  Only using random letters in the name plus a ".tmp" extension. Not by
  appending characters to the final file name.

  Reported-by: Maksymilian Arciemowicz

  Closes #12388

Stefan Eissing (23 Nov 2023)

- tests: git ignore generated second-hsts.txt file

  File is generated in test lib1900

  Follow-up to 7cb03229d9e9c5

  Closes #12393

Viktor Szakats (23 Nov 2023)

- openssl: enable `infof_certstack` for 1.1 and LibreSSL 3.6

  Lower the barrier to enable `infof_certstack()` from OpenSSL 3 to
  OpenSSL 1.1.x, and LibreSSL 3.6 or upper.

  With the caveat, that "group name" and "type name" are missing from
  the log output with these TLS backends.

  Follow-up to b6e6d4ff8f253c8b8055bab9d4d6a10f9be109f3 #12030

  Reviewed-by: Daniel Stenberg
  Closes #12385

Daniel Stenberg (23 Nov 2023)

- urldata: fix typo in comment

- CI: codespell

  The list of words to ignore is in the file
  .github/scripts/codespell-ignore.txt

  Closes #12390

- lib: fix comment typos

  Five separate ones, found by codespell

  Closes #12390

- test1476: verify cookie PSL mixed case

- cookie: lowercase the domain names before PSL checks

  Reported-by: Harry Sintonen

  Closes #12387

Viktor Szakats (23 Nov 2023)

- openssl: fix building with v3 `no-deprecated` + add CI test

  - build quictls with `no-deprecated` in CI to have test coverage for
    this OpenSSL 3 configuration.

  - don't call `OpenSSL_add_all_algorithms()`, `OpenSSL_add_all_digests()`.
    The caller code is meant for OpenSSL 3, while these two functions were
    only necessary before OpenSSL 1.1.0. They are missing from OpenSSL 3
    if built with option `no-deprecated`, causing build errors:
    ```
    vtls/openssl.c:4097:3: error: call to undeclared function 'OpenSSL_add_all_
  algorithms'; ISO C99 and later do not   support implicit function declaration
  s [-Wimplicit-function-declaration]
    vtls/openssl.c:4098:3: error: call to undeclared function 'OpenSSL_add_all_
  digests'; ISO C99 and later do not   support implicit function declarations [
  -Wimplicit-function-declaration]
    ```
    Ref: https://ci.appveyor.com/project/curlorg/curl-for-win/builds/48587418?f
  ullLog=true#L7667

    Regression from b6e6d4ff8f253c8b8055bab9d4d6a10f9be109f3 #12030
    Bug: https://github.com/curl/curl/issues/12380#issuecomment-1822944669
    Reviewed-by: Alex Bozarth

  - vquic/curl_ngtcp2: fix using `SSL_get_peer_certificate` with
    `no-deprecated` quictls 3 builds.
    Do it by moving an existing solution for this from `vtls/openssl.c`
    to `vtls/openssl.h` and adjusting caller code.
    ```
    vquic/curl_ngtcp2.c:1950:19: error: implicit declaration of function 'SSL_g
  et_peer_certificate'; did you mean   'SSL_get1_peer_certificate'? [-Wimplicit
  -function-declaration]
    ```
    Ref: https://github.com/curl/curl/actions/runs/6960723097/job/18940818625#s
  tep:24:1178

  - curl_ntlm_core: fix `-Wunused-parameter`, `-Wunused-variable` and
    `-Wunused-function` when trying to build curl with NTLM enabled but
    without the necessary TLS backend (with DES) support.

  Closes #12384

- curl.h: delete Symbian OS references

  curl deprecated Symbian OS in 3d64031fa7a80ac4ae3fd09a5939196268b92f81
  via #5989. Delete references to it from public headers, because there
  is no fresh release to use those headers with.

  Reviewed-by: Dan Fandrich
  Reviewed-by: Jay Satiro
  Closes #12378

- windows: use built-in `_WIN32` macro to detect Windows

  Windows compilers define `_WIN32` automatically. Windows SDK headers
  or build env defines `WIN32`, or we have to take care of it. The
  agreement seems to be that `_WIN32` is the preferred practice here.
  Make the source code rely on that to detect we're building for Windows.

  Public `curl.h` was using `WIN32`, `__WIN32__` and `CURL_WIN32` for
  Windows detection, next to the official `_WIN32`. After this patch it
  only uses `_WIN32` for this. Also, make it stop defining `CURL_WIN32`.

  There is a slight chance these break compatibility with Windows
  compilers that fail to define `_WIN32`. I'm not aware of any obsolete
  or modern compiler affected, but in case there is one, one possible
  solution is to define this macro manually.

  grepping for `WIN32` remains useful to discover Windows-specific code.

  Also:

  - extend `checksrc` to ensure we're not using `WIN32` anymore.

  - apply minor formatting here and there.

  - delete unnecessary checks for `!MSDOS` when `_WIN32` is present.

  Co-authored-by: Jay Satiro
  Reviewed-by: Daniel Stenberg

  Closes #12376

Stefan Eissing (22 Nov 2023)

- url: ConnectionExists revisited

  - have common pattern of `if not match, continue`
  - revert pages long if()s to return early
  - move dead connection check to later since it may
    be relatively expensive
  - check multiuse also when NOT building with NGHTTP2
  - for MULTIUSE bundles, verify that the inspected
    connection indeed supports multiplexing when in use
    (bundles may contain a mix of connection, afaict)

  Closes #12373

Daniel Stenberg (22 Nov 2023)

- CURLMOPT_MAX_CONCURRENT_STREAMS: make sure the set value is within range

  ... or use the default value.

  Also clarify the documentation language somewhat.

  Closes #12382

- urldata: make maxconnects a 32 bit value

  "2^32 idle connections ought to be enough for anybody"

  Closes #12375

- FEATURES: update the URL phrasing

  The URL is length limited since a while back so "no limit" simply is not
  true anymore. Mention the URL RFC standard used instead.

  Closes #12383

- wolfssh: remove redundant static prototypes

  vssh/wolfssh.c:346:18: error: redundant redeclaration of ‘wscp_recv’ [-We
  rror=redundant-decls]

  Closes #12381

- setopt: remove superfluous use of ternary expressions

  Closes #12374

- mime: store "form escape" as a single bit

  Closes #12374

- setopt: check CURLOPT_TFTP_BLKSIZE range on set

  ... instead of later when the transfer is about to happen.

  Closes #12374

Viktor Szakats (21 Nov 2023)

- build: add more picky warnings and fix them

  Enable more picky compiler warnings. I've found these options in the
  nghttp3 project when implementing the CMake quick picky warning
  functionality for it [1].

  `-Wunused-macros` was too noisy to keep around, but fixed a few issues
  it revealed while testing.

  - autotools: reflect the more precisely-versioned clang warnings.
    Follow-up to 033f8e2a08eb1d3102f08c4d8c8e85470f8b460e #12324
  - autotools: sync between clang and gcc the way we set `no-multichar`.
  - autotools: avoid setting `-Wstrict-aliasing=3` twice.
  - autotools: disable `-Wmissing-noreturn` for MSYS gcc targets [2].
    It triggers in libtool-generated stub code.

  - lib/timeval: delete a redundant `!MSDOS` guard from a `WIN32` branch.

  - lib/curl_setup.h: delete duplicate declaration for `fileno`.
    Added in initial commit ae1912cb0d494b48d514d937826c9fe83ec96c4d
    (1999-12-29). This suggests this may not be needed anymore, but if
    it does, we may restore this for those specific (non-Windows) systems.
  - lib: delete unused macro `FTP_BUFFER_ALLOCSIZE` since
    c1d6fe2aaa5a26e49a69a4f2495b3cc7a24d9394.
  - lib: delete unused macro `isxdigit_ascii` since
    f65f750742068f579f4ee6d8539ed9d5f0afcb85.
  - lib/mqtt: delete unused macro `MQTT_HEADER_LEN`.
  - lib/multi: delete unused macro `SH_READ`/`SH_WRITE`.
  - lib/hostip: add `noreturn` function attribute via new `CURL_NORETURN`
    macro.
  - lib/mprintf: delete duplicate declaration for `Curl_dyn_vprintf`.
  - lib/rand: fix `-Wunreachable-code` and related fallouts [3].
  - lib/setopt: fix `-Wunreachable-code-break`.
  - lib/system_win32 and lib/timeval: fix double declarations for
    `Curl_freq` and `Curl_isVistaOrGreater` in CMake UNITY mode [4].
  - lib/warnless: fix double declarations in CMake UNITY mode [5].
    This was due to force-disabling the header guard of `warnless.h` to
    to reapply it to source code coming after `warnless.c` in UNITY
    builds. This reapplied declarations too, causing the warnings.
    Solved by adding a header guard for the lines that actually need
    to be reapplied.
  - lib/vauth/digest: fix `-Wunreachable-code-break` [6].
  - lib/vssh/libssh2: fix `-Wunreachable-code-break` and delete redundant
    block.
  - lib/vtls/sectransp: fix `-Wunreachable-code-break` [7].
  - lib/vtls/sectransp: suppress `-Wunreachable-code`.
    Detected in `else` branches of dynamic feature checks, with results
    known at compile-time, e.g.
    ```c
    if(SecCertificateCopySubjectSummary)  /* -> true */
    ```
    Likely fixable as a separate micro-project, but given SecureTransport
    is deprecated anyway, let's just silence these locally.
  - src/tool_help: delete duplicate declaration for `helptext`.
  - src/tool_xattr: fix `-Wunreachable-code`.
  - tests: delete duplicate declaration for `unitfail` [8].
  - tests: delete duplicate declaration for `strncasecompare`.
  - tests/libtest: delete duplicate declaration for `gethostname`.
    Originally added in 687df5c8c39c370a59999b9afc0917d808d978b7
    (2010-08-02).
    Got complicated later: c49e9683b85ba9d12cbb6eebc4ab2c8dba68fbdc
    If there are still systems around with warnings, we may restore the
    prototype, but limited for those systems.
  - tests/lib2305: delete duplicate declaration for
    `libtest_debug_config`.
  - tests/h2-download: fix `-Wunreachable-code-break`.

  [1] https://github.com/ngtcp2/nghttp3/blob/a70edb08e954d690e8fb2c1df999b5a056
  f8bf9f/cmake/PickyWarningsC.cmake
  [2] https://ci.appveyor.com/project/curlorg/curl/builds/48553586/job/3qkgjaui
  qla5fj45?fullLog=true#L1675
  [3] https://github.com/curl/curl/actions/runs/6880886309/job/18716044703?pr=1
  2331#step:7:72
      https://github.com/curl/curl/actions/runs/6883016087/job/18722707368?pr=1
  2331#step:7:109
  [4] https://ci.appveyor.com/project/curlorg/curl/builds/48555101/job/9g15qkrr
  iklpf1ut#L204
  [5] https://ci.appveyor.com/project/curlorg/curl/builds/48555101/job/9g15qkrr
  iklpf1ut#L218
  [6] https://github.com/curl/curl/actions/runs/6880886309/job/18716042927?pr=1
  2331#step:7:290
  [7] https://github.com/curl/curl/actions/runs/6891484996/job/18746659406?pr=1
  2331#step:9:1193
  [8] https://github.com/curl/curl/actions/runs/6882803986/job/18722082562?pr=1
  2331#step:33:1870

  Closes #12331

Daniel Stenberg (21 Nov 2023)

- transfer: avoid unreachable expression

  If curl_off_t and size_t have the same size (which is common on modern
  64 bit systems), a condition cannot occur which Coverity pointed
  out. Avoid the warning by having the code conditionally only used if
  curl_off_t actually is larger.

  Follow-up to 1cd2f0072fa482e25baa2

  Closes #12370

Stefan Eissing (21 Nov 2023)

- transfer: readwrite improvements

  - changed header/chunk/handler->readwrite prototypes to accept `buf`,
    `blen` and a `pconsumed` pointer. They now get the buffer to work on
    and report back how many bytes they consumed
  - eliminated `k->str` in SingleRequest
  - improved excess data handling to properly calculate with any body data
    left in the headerb buffer
  - eliminated `k->badheader` enum to only be a bool

  Closes #12283

Daniel Stenberg (21 Nov 2023)

- RELEASE-NOTES: synced

Jiří Hruška (21 Nov 2023)

- transfer: avoid calling the read callback again after EOF

  Regression since 7f43f3dc5994d01b12 (7.84.0)

  Bug: https://curl.se/mail/lib-2023-11/0017.html

  Closes #12363

Daniel Stenberg (21 Nov 2023)

- doh: provide better return code for responses w/o addresses

  Previously it was wrongly returning CURLE_OUT_OF_MEMORY when the
  response did not contain any addresses. Now it more accurately returns
  CURLE_COULDNT_RESOLVE_HOST.

  Reported-by: lRoccoon on github

  Fixes #12365
  Closes #12366

Stefan Eissing (21 Nov 2023)

- HTTP/2, HTTP/3: handle detach of onoing transfers

  - refs #12356 where a UAF is reported when closing a connection
    with a stream whose easy handle was cleaned up already
  - handle DETACH events same as DONE events in h2/h3 filters

  Fixes #12356
  Reported-by: Paweł Wegner
  Closes #12364

Viktor Szakats (20 Nov 2023)

- autotools: stop setting `-std=gnu89` with `--enable-warnings`

  Do not alter the C standard when building with `--enable-warnings` when
  building with gcc.

  On one hand this alters warning results compared to a default build.
  On the other, it may produce different binaries, which is unexpected.

  Also fix new warnings that appeared after removing `-std=gnu89`:

  - include: fix public curl headers to use the correct printf mask for
    `CURL_FORMAT_CURL_OFF_T` and `CURL_FORMAT_CURL_OFF_TU` with mingw-w64
    and Visual Studio 2013 and newer. This fixes the printf mask warnings
    in examples and tests. E.g. [1]

  - conncache: fix printf format string [2].

  - http2: fix potential null pointer dereference [3].
    (seen on Slackware with gcc 11.)

  - libssh: fix printf format string in SFTP code [4].
    Also make MSVC builds compatible with old CRT versions.

  - libssh2: fix printf format string in SFTP code for MSVC.
    Applying the same fix as for libssh above.

  - unit1395: fix `argument is null` and related issues [5]:
    - stop calling `strcmp()` with NULL to avoid undefined behaviour.
    - fix checking results if some of them were NULL.
    - do not pass NULL to printf `%s`.

  - ci: keep a build job with `-std=gnu89` to continue testing for
    C89-compliance. We can apply this to other gcc jobs as needed.
    Ref: b23ce2cee7329bbf425f18b49973b7a5f23dfcb4 (2022-09-23) #9542

  [1] https://dev.azure.com/daniel0244/curl/_build/results?buildId=18581&view=l
  ogs&jobId=ccf9cc6d-2ef1-5cf2-2c09-30f0c14f923b
  [2] https://github.com/curl/curl/actions/runs/6896854263/job/18763831142?pr=1
  2346#step:6:67
  [3] https://github.com/curl/curl/actions/runs/6896854253/job/18763839238?pr=1
  2346#step:30:214
  [4] https://github.com/curl/curl/actions/runs/6896854253/job/18763838007?pr=1
  2346#step:29:895
  [5] https://github.com/curl/curl/actions/runs/6896854253/job/18763836775?pr=1
  2346#step:33:1689

  Closes #12346

- autotools: fix/improve gcc and Apple clang version detection

  - Before this patch we expected `n.n` `-dumpversion` output, but Ubuntu
    may return `n-win32` (also with `-dumpfullversion`). Causing these
    errors and failing to enable picky warnings:
    ```
    ../configure: line 23845: test: : integer expression expected
    ```
    Ref: https://github.com/libssh2/libssh2/actions/runs/6263453828/job/1700789
  3718#step:5:143

    Fix that by stripping any dash-suffix and handling a dotless (major-only)
    version number by assuming `.0` in that case.

    `9.3-posix`, `9.3-win32`, `6`, `9.3.0`, `11`, `11.2`, `11.2.0`
    Ref: https://github.com/mamedev/mame/pull/9767

  - fix Apple clang version detection for releases between
    'Apple LLVM version 7.3.0' and 'Apple LLVM version 10.0.1' where the
    version was under-detected as 3.7 llvm/clang equivalent.

  - fix Apple clang version detection for 'Apple clang version 11.0.0'
    and newer where the Apple clang version was detected, instead of its
    llvm/clang equivalent.

  - display detected clang/gcc/icc compiler version.

  Via libssh2:
  - https://github.com/libssh2/libssh2/commit/00a3b88c51cdb407fbbb347a2e38c5c7d
  89875ad
    https://github.com/libssh2/libssh2/pull/1187
  - https://github.com/libssh2/libssh2/commit/89ccc83c7da73e7ca3a112e3500081319
  42b592e
    https://github.com/libssh2/libssh2/pull/1232

  Closes #12362

- autotools: delete LCC compiler support bits

  Follow-up to fd7ef00f4305a2919e6950def1cf83d0110a4acd #12222

  Closes #12357

- cmake: add test for `DISABLE` options, add `CURL_DISABLE_HEADERS_API`

  - tests: verify CMake `DISABLE` options.

    Make an exception for 2 CMake-only ones, and one more that's
    using a different naming scheme, also in autotools and source.

  - cmake: add support for `CURL_DISABLE_HEADERS_API`.

  Suggested-by: Daniel Stenberg
  Ref: https://github.com/curl/curl/pull/12345#pullrequestreview-1736238641

  Closes #12353

Jacob Hoffman-Andrews (20 Nov 2023)

- hyper: temporarily remove HTTP/2 support

  The current design of the Hyper integration requires rebuilding the
  Hyper clientconn for each request. However, building the clientconn
  requires resending the HTTP/2 connection preface, which is incorrect
  from a protocol perspective. That in turn causes servers to send GOAWAY
  frames, effectively degrading performance to "no connection reuse" in
  the best case. It may also be triggering some bugs where requests get
  dropped entirely and reconnects take too long.

  This doesn't rule out HTTP/2 support with Hyper, but it may take a
  redesign of the Hyper integration in order to make things work.

  Closes #12191

Jay Satiro (20 Nov 2023)

- schannel: fix unused variable warning

  Bug: https://github.com/curl/curl/pull/12349#issuecomment-1818000846
  Reported-by: Viktor Szakats

  Closes https://github.com/curl/curl/pull/12361

Daniel Stenberg (19 Nov 2023)

- url: find scheme with a "perfect hash"

  Instead of a loop to scan over the potentially 30+ scheme names, this
  uses a "perfect hash" table. This works fine because the set of schemes
  is known and cannot change in a build. The hash algorithm and table size
  is made to only make a single scheme index per table entry.

  The perfect hash is generated by a separate tool (scripts/schemetable.c)

  Closes #12347

- scripts: add schemetable.c

  This tool generates a scheme-matching table.

  It iterates over a number of different initial and shift values in order
  to find the hash algorithm that needs the smallest possible table.

  The generated hash function, table and table size then needs to be used
  by the url.c:Curl_getn_scheme_handler() function.

Stefan Eissing (19 Nov 2023)

- vtls/vquic, keep peer name information together

  - add `struct ssl_peer` to keep hostname, dispname and sni
    for a filter
  - allocate `sni` for use in VTLS backend
  - eliminate `Curl_ssl_snihost()` and its use of the download buffer
  - use ssl_peer in SSL and QUIC filters

  Closes #12349

Viktor Szakats (18 Nov 2023)

- build: always revert `#pragma GCC diagnostic` after use

  Before this patch some source files were overriding gcc warning options,
  but without restoring them at the end of the file. In CMake UNITY builds
  these options spilled over to the remainder of the source code,
  effecitvely disabling them for a larger portion of the codebase than
  intended.

  `#pragma clang diagnostic` didn't have such issue in the codebase.

  Reviewed-by: Marcel Raad
  Closes #12352

- tidy-up: casing typos, delete unused Windows version aliases

  - cmake: fix casing of `UnixSockets` to match the rest of the codebase.

  - curl-compilers.m4: fix casing in a comment.

  - setup-win32: delete unused Windows version constant aliases.

  Reviewed-by: Marcel Raad
  Closes #12351

- keylog: disable if unused

  Fully disable keylog code if there is no TLS or QUIC subsystem using it.

  Closes #12350

- cmake: add `CURL_DISABLE_BINDLOCAL` option

  To match similar autotools option.

  Default is `ON`.

  Reviewed-by: Daniel Stenberg
  Closes #12345

- url: fix `-Wzero-length-array` with no protocols

  Fixes:
  ```
  ./lib/url.c:178:56: warning: use of an empty initializer is a C2x extension [
  -Wc2x-extensions]
    178 | static const struct Curl_handler * const protocols[] = {
        |                                                        ^
  ./lib/url.c:178:56: warning: zero size arrays are an extension [-Wzero-length
  -array]
  ```

  Closes #12344

- url: fix builds with `CURL_DISABLE_HTTP`

  Fixes:
  ```
  ./lib/url.c:456:35: error: no member named 'formp' in 'struct UrlState'
    456 |   Curl_mime_cleanpart(data->state.formp);
        |                       ~~~~~~~~~~~ ^
  ```

  Regression from 74b87a8af13a155c659227f5acfa78243a8b2aa6 #11682

  Closes #12343

- http: fix `-Wunused-parameter` with no auth and no proxy

  ```
  lib/http.c:734:26: warning: unused parameter 'proxy' [-Wunused-parameter]
                      bool proxy)
                           ^
  ```

  Reviewed-by: Marcel Raad
  Closes #12338

Daniel Stenberg (16 Nov 2023)

- TODO: Some TLS options are not offered for HTTPS proxies

  Closes #12286
  Closes #12342

- RELEASE-NOTES: synced

- duphandle: make dupset() not return with pointers to old alloced data

  As the blob pointers are to be duplicated, the function must not return
  mid-function with lingering pointers to the old handle's allocated data,
  as that would lead to double-free in OOM situations.

  Make sure to clear all destination pointers first to avoid this risk.

  Closes #12337

Viktor Szakats (16 Nov 2023)

- http: fix `-Wunused-variable` compiler warning

  Fix compiler warnings in builds with disabled auths, NTLM and SPNEGO.

  E.g. with `CURL_DISABLE_BASIC_AUTH` + `CURL_DISABLE_BEARER_AUTH` +
  `CURL_DISABLE_DIGEST_AUTH` + `CURL_DISABLE_NEGOTIATE_AUTH` +
  `CURL_DISABLE_NTLM` on non-Windows.

  ```
  ./curl/lib/http.c:737:12: warning: unused variable 'result' [-Wunused-variabl
  e]
    CURLcode result = CURLE_OK;
             ^
  ./curl/lib/http.c:995:18: warning: variable 'availp' set but not used [-Wunus
  ed-but-set-variable]
    unsigned long *availp;
                   ^
  ./curl/lib/http.c:996:16: warning: variable 'authp' set but not used [-Wunuse
  d-but-set-variable]
    struct auth *authp;
                 ^
  ```

  Regression from e92edfbef64448ef461117769881f3ed776dec4e #11490

  Fixes #12228
  Closes #12335

Jay Satiro (16 Nov 2023)

- tool: support bold headers in Windows

  - If virtual terminal processing is enabled in Windows then use ANSI
    escape codes Esc[1m and Esc[22m to turn bold on and off.

  Suggested-by: Gisle Vanem

  Ref: https://github.com/curl/curl/discussions/11770

  Closes https://github.com/curl/curl/pull/12321

Viktor Szakats (15 Nov 2023)

- build: fix libssh2 + `CURL_DISABLE_DIGEST_AUTH` + `CURL_DISABLE_AWS`

  Builds with libssh2 + `-DCURL_DISABLE_DIGEST_AUTH=ON` +
  `-DCURL_DISABLE_AWS=ON` in combination with either Schannel on Windows,
  or `-DCURL_DISABLE_NTLM=ON` on other operating systems failed while
  compiling due to a missing HMAC declaration.

  The reason is that HMAC is required by `lib/sha256.c` which publishes
  `Curl_sha256it()` which is required by `lib/vssh/libssh2.c` when
  building for libssh2 v1.8.2 (2019-05-25) or older.

  Make sure to compile the HMAC bits for a successful build.

  Both HMAC and `Curl_sha256it()` rely on the same internals, so splitting
  them into separate sources isn't practical.

  Fixes:
  ```
  [...]
  In file included from ./curl/_x64-win-ucrt-cmake-llvm-bld/lib/CMakeFiles/libc
  url_object.dir/Unity/unity_0_c.c:310:
  ./curl/lib/sha256.c:527:42: error: array has incomplete element type 'const s
  truct HMAC_params'
    527 | const struct HMAC_params Curl_HMAC_SHA256[] = {
        |                                          ^
  ./curl/lib/curl_sha256.h:34:21: note: forward declaration of 'struct HMAC_par
  ams'
  [...]
  ```

  Regression from e92edfbef64448ef461117769881f3ed776dec4e #11490

  Fixes #12273
  Closes #12332

Daniel Stenberg (15 Nov 2023)

- duphandle: also free 'outcurl->cookies' in error path

  Fixes memory-leak when OOM mid-function

  Use plain free instead of safefree, since the entire struct is
  freed below.

  Remove some free calls that is already freed in Curl_freeset()

  Closes #12329

Viktor Szakats (15 Nov 2023)

- config-win32: set `HAVE_SNPRINTF` for mingw-w64

  It's available in all mingw-w64 releases. We already pre-fill this
  detection in CMake.

  Closes #12325

- sasl: fix `-Wunused-function` compiler warning

  In builds with disabled auths.

  ```
  lib/curl_sasl.c:266:17: warning: unused function 'get_server_message' [-Wunus
  ed-function]
  static CURLcode get_server_message(struct SASL *sasl, struct Curl_easy *data,
                  ^
  1 warning generated.
  ```
  Ref: https://github.com/curl/trurl/actions/runs/6871732122/job/18689066151#st
  ep:3:3822

  Reviewed-by: Daniel Stenberg
  Closes #12326

- build: picky warning updates

  - cmake: sync some picky gcc warnings with autotools.
  - cmake, autotools: add `-Wold-style-definition` for clang too.
  - cmake: more precise version info for old clang options.
  - cmake: use `IN LISTS` syntax in `foreach()`.

  Reviewed-by: Daniel Stenberg
  Reviewed-by: Marcel Raad
  Closes #12324

Daniel Stenberg (15 Nov 2023)

- urldata: move cookielist from UserDefined to UrlState

  1. Because the value is not strictly set with a setopt option.

  2. Because otherwise when duping a handle when all the set.* fields are
     first copied and an error happens (think out of memory mid-function),
     the function would easily free the list *before* it was deep-copied,
     which could lead to a double-free.

  Closes #12323

Viktor Szakats (14 Nov 2023)

- autotools: avoid passing `LDFLAGS` twice to libcurl

  autotools passes `LDFLAGS` automatically linker commands. curl's
  `lib/Makefile.am` customizes libcurl linker flags. In that
  customization, it added `LDFLAGS` to the custom flags. This resulted in
  passing `LDFLAGS` _twice_ to the `libtool` command.

  Most of the time this is benign, but some `LDFLAGS` options can break
  the build when passed twice. One such example is passing `.o` files,
  e.g. `crt*.o` files necessary when customizing the C runtime, e.g. for
  MUSL builds.

  Passing them twice resulted in duplicate symbol errors:
  ```
  libtool: link:  clang-15 --target=aarch64-unknown-linux-musl [...] /usr/lib/a
  arch64-linux-musl/crt1.o [...] /usr/lib/aarch64-linux-musl/crt1.o [...]
  ld.lld-15: error: duplicate symbol: _start
  >>> defined at crt1.c
  >>>            /usr/lib/aarch64-linux-musl/crt1.o:(.text+0x0)
  >>> defined at crt1.c
  >>>            /usr/lib/aarch64-linux-musl/crt1.o:(.text+0x0)
  [...]
  clang: error: linker command failed with exit code 1 (use -v to see invocatio
  n)
  ```

  This behaviour came with commit 1a593191c2769a47b8c3e4d9715ec9f6dddf5e36
  (2013-07-23) as a fix for bug https://curl.haxx.se/bug/view.cgi?id=1217.
  The patch was a works-for-me hack that ended up merged in curl:
  https://sourceforge.net/p/curl/bugs/1217/#06ef
  With the root cause remaining unclear.

  Perhaps the SUNPro 12 linker was sensitive to `-L` `-l` order, requiring
  `-L` first? This would be unusual and suggests a bug in either the
  linker or in `libtool`.

  The curl build does pass the list of detected libs via its own
  `LIBCURL_LIBS` variable, which ends up before `LDFLAGS` on the `libtool`
  command line, but it's the job of `libtool` to ensure that even
  a peculiar linker gets the options in the expected order. Also because
  autotools passes `LDFLAGS` last, making it hardly possible to pass
  anything after it.

  Perhaps in the 10 years since this issue, this already got a fix
  upstream.

  This patch deletes `LDFLAGS` from our customized libcurl options,
  leaving a single copy of them as passed by autotools automatically.

  Reverts 1a593191c2769a47b8c3e4d9715ec9f6dddf5e36
  Closes #12310

- autotools: accept linker flags via `CURL_LDFLAGS_{LIB,BIN}`

  To allow passing `LDFLAGS` specific to libcurl (`CURL_LDFLAGS_LIB`) and
  curl tool (`CURL_LDFLAGS_BIN`).

  This makes it possible to build libcurl and curl with a single
  invocation with lib- and tool-specific custom linker flags.

  Such flag can be enabling `.map` files, a `.def` file for libcurl DLL,
  controlling static/shared, incl. requesting a static curl tool (with
  `-static-libtool-libs`) while building both shared and static libcurl.

  curl-for-win uses the above and some more.

  These options are already supported in `Makefile.mk`. CMake has built-in
  variables for this.

  Closes #12312

Jay Satiro (14 Nov 2023)

- tool_cb_hdr: add an additional parsing check

  - Don't dereference the past-the-end element when parsing the server's
    Content-disposition header.

  As 'p' is advanced it can point to the past-the-end element and prior
  to this change 'p' could be dereferenced in that case.

  Technically the past-the-end element is not out of bounds because dynbuf
  (which manages the header line) automatically adds a null terminator to
  every buffer and that is not included in the buffer length passed to
  the header callback.

  Closes https://github.com/curl/curl/pull/12320

Philip Heiduck (14 Nov 2023)

- .cirrus.yml: freebsd 14

  ensure curl works on latest freebsd version

  Closes #12053

Daniel Stenberg (13 Nov 2023)

- easy: in duphandle, init the cookies for the new handle

  ... not the source handle.

  Closes #12318

- duphandle: use strdup to clone *COPYPOSTFIELDS if size is not set

  Previously it would unconditionally use the size, which is set to -1
  when strlen is requested.

  Updated test 544 to verify.

  Closes #12317

- RELEASE-NOTES: synced

- curl_easy_duphandle.3: clarify how HSTS and alt-svc are duped

  Closes #12315

- urldata: move hstslist from 'set' to 'state'

  To make it work properly with curl_easy_duphandle(). This, because
  duphandle duplicates the entire 'UserDefined' struct by plain copy while
  'hstslist' is a linked curl_list of file names. This would lead to a
  double-free when the second of the two involved easy handles were
  closed.

  Closes #12315

- test1900: verify duphandle with HSTS using multiple files

  Closes #12315

Goro FUJI (13 Nov 2023)

- http: allow longer HTTP/2 request method names

  - Increase the maximum request method name length from 11 to 23.

  For HTTP/1.1 and earlier there's not a specific limit in libcurl for
  method length except that it is limited by the initial HTTP request
  limit (DYN_HTTP_REQUEST). Prior to fc2f1e54 HTTP/2 was treated the same
  and there was no specific limit.

  According to Internet Assigned Numbers Authority (IANA) the longest
  registered method is UPDATEREDIRECTREF which is 17 characters.

  Also there are unregistered methods used by some companies that are
  longer than 11 characters.

  The limit was originally added by 61f52a97 but not used until fc2f1e54.

  Ref: https://www.iana.org/assignments/http-methods/http-methods.xhtml

  Closes https://github.com/curl/curl/pull/12311

Jay Satiro (12 Nov 2023)

- CURLOPT_CAINFO_BLOB.3: explain what CURL_BLOB_COPY does

  - Add an explanation of the CURL_BLOB_COPY flag to CURLOPT_CAINFO_BLOB
    and CURLOPT_PROXY_CAINFO_BLOB docs.

  All the other _BLOB option docs already have the same explanation.

  Closes https://github.com/curl/curl/pull/12277

Viktor Szakats (11 Nov 2023)

- tidy-up: dedupe Windows system libs in cmake

  Reviewed-by: Daniel Stenberg
  Closes #12307

Junho Choi (11 Nov 2023)

- ci: test with latest quiche release (0.19.0)

  Closes #12180

- quiche: use quiche_conn_peer_transport_params()

  In recent quiche, transport parameter API is separated
  with quiche_conn_peer_transport_params().
  (https://github.com/cloudflare/quiche/pull/1575)
  It breaks with bulding with latest(post 0.18.0) quiche.

  Closes #12180

Daniel Stenberg (11 Nov 2023)

- Makefile: generate the VC 14.20 project files at dist-time

  Follow-up to 28287092cc5a6d6ef8 (#12282)

  Closes #12290

Sam James (11 Nov 2023)

- misc: fix -Walloc-size warnings

  GCC 14 introduces a new -Walloc-size included in -Wextra which gives:

  ```
  src/tool_operate.c: In function ‘add_per_transfer’:
  src/tool_operate.c:213:5: warning: allocation of insufficient size ‘1’ fo
  r type ‘struct per_transfer’ with size ‘480’ [-Walloc-size]
    213 |   p = calloc(sizeof(struct per_transfer), 1);
        |     ^
  src/var.c: In function ‘addvariable’:
  src/var.c:361:5: warning: allocation of insufficient size ‘1’ for type �
  �struct var’ with size ‘32’ [-Walloc-size]
    361 |   p = calloc(sizeof(struct var), 1);
        |     ^
  ```

  The calloc prototype is:
  ```
  void *calloc(size_t nmemb, size_t size);
      ```

  So, just swap the number of members and size arguments to match the
  prototype, as we're initialising 1 struct of size `sizeof(struct
  ...)`. GCC then sees we're not doing anything wrong.

  Closes #12292

Mark Gaiser (11 Nov 2023)

- IPFS: bugfixes

  - Fixed endianness bug in gateway file parsing
  - Use IPFS_PATH in tests where IPFS_DATA was used
  - Fixed typos from traling -> trailing
  - Fixed broken link in IPFS.md

  Follow-up to 859e88f6533f9e

  Reported-by: Michael Kaufmann
  Bug: https://github.com/curl/curl/pull/12152#issuecomment-1798214137
  Closes #12305

Daniel Stenberg (11 Nov 2023)

- VULN-DISCLOSURE-POLIC: remove broken link to hackerone

  It should ideally soon not be done from hackerone anyway

  Closes #12308

Andrew Kurushin (11 Nov 2023)

- schannel: add CA cache support for files and memory blobs

  - Support CA bundle and blob caching.

  Cache timeout is 24 hours or can be set via CURLOPT_CA_CACHE_TIMEOUT.

  Closes https://github.com/curl/curl/pull/12261

Daniel Stenberg (10 Nov 2023)

- RELEASE-NOTES: synced

Charlie C (10 Nov 2023)

- cmake: option to disable install & drop `curlu` target when unused

  This patch makes the following changes:
  - adds the option `CURL_DISABLE_INSTALL` - to disable 'install' targets.
  - Removes the target `curlu` when the option `BUILD_TESTING` is set to
    `OFF` - to prevent it from being loaded in Visual Studio.

  Closes #12287

Kai Pastor (10 Nov 2023)

- cmake: fix multiple include of CURL package

  Fixes errors on second `find_package(CURL)`. This is a frequent case
  with transitive dependencies:
  ```
  CMake Error at ...:
    add_library cannot create ALIAS target "CURL::libcurl" because another
    target with the same name already exists.
  ```

  Test to reproduce:
  ```cmake
  cmake_minimum_required(VERSION 3.27)  # must be 3.18 or higher

  project(curl)

  set(CURL_DIR "example/lib/cmake/CURL/")
  find_package(CURL CONFIG REQUIRED)
  find_package(CURL CONFIG REQUIRED)  # fails

  add_executable(main main.c)
  target_link_libraries(main CURL::libcurl)
  ```

  Ref: https://cmake.org/cmake/help/latest/release/3.18.html#other-changes
  Ref: https://cmake.org/cmake/help/v3.18/policy/CMP0107.html
  Ref: #12300
  Assisted-by: Harry Mallon
  Closes #11913

Viktor Szakats (8 Nov 2023)

- tidy-up: use `OPENSSL_VERSION_NUMBER`

  Uniformly use `OPENSSL_VERSION_NUMBER` to check for OpenSSL version.
  Before this patch some places used `OPENSSL_VERSION_MAJOR`.

  Also fix `lib/md4.c`, which included `opensslconf.h`, but that doesn't
  define any version number in these implementations: BoringSSL, AWS-LC,
  LibreSSL, wolfSSL. (Only in mainline OpenSSL/quictls). Switch that to
  `opensslv.h`. This wasn't causing a deeper problem because the code is
  looking for v3, which is only provided by OpenSSL/quictls as of now.

  According to https://github.com/openssl/openssl/issues/17517, the macro
  `OPENSSL_VERSION_NUMBER` is safe to use and not deprecated.

  Reviewed-by: Marcel Raad
  Closes #12298

Daniel Stenberg (8 Nov 2023)

- resolve.d: drop a multi use-sentence

  Since the `multi:` keyword adds that message.

  Reported-by: 積丹尼 Dan Jacobson
  Fixes https://github.com/curl/curl/discussions/12294
  Closes #12295

- content_encoding: make Curl_all_content_encodings allocless

  - Fixes a memory leak pointed out by Coverity
  - Also found by OSS-Fuzz: https://bugs.chromium.org/p/oss-fuzz/issues/detail?
  id=63947
  - Avoids unncessary allocations

  Follow-up ad051e1cbec68b2456a22661b

  Closes #12289

Michael Kaufmann (7 Nov 2023)

- vtls: use ALPN "http/1.1" for HTTP/1.x, including HTTP/1.0

  Some servers don't support the ALPN protocol "http/1.0" (e.g. IIS 10),
  avoid it and use "http/1.1" instead.

  This reverts commit df856cb5c9 (#10183).

  Fixes #12259
  Closes #12285

Daniel Stenberg (7 Nov 2023)

- Makefile.am: drop vc10, vc11 and vc12 projects from dist

  They are end of life products. Support for generating them remain in the
  repo for a while but this change drops them from distribution.

  Closes #12288

David Suter (7 Nov 2023)

- projects: add VC14.20 project files

  Windows projects included VC14, VC14.10, VC14.30 but not VC14.20.
  OpenSSL and Wolf SSL scripts mention VC14.20 so I don't see a reason why
  this is missing. Updated the templates to produce a VC14.20 project.
  Project opens in Visual Studio 2019 as expected.

  Closes #12282

Daniel Stenberg (7 Nov 2023)

- curl: move IPFS code into src/tool_ipfs.[ch]

  - convert ensure_trailing into ensure_trailing_slash
  - strdup the URL string to own it proper
  - use shorter variable names
  - combine some expressions
  - simplify error handling in ipfs_gateway()
  - add MAX_GATEWAY_URL_LEN + proper bailout if maximum is reached
  - ipfs-gateway.d polish and simplification
  - shorten ipfs error message + make them "synthetic"

  Closes #12281

Viktor Szakats (6 Nov 2023)

- build: delete support bits for obsolete Windows compilers

  - Pelles C: Unclear status, failed to obtain a fresh copy a few months
    ago. Possible website is HTTP-only. ~10 years ago I left this compiler
    dealing with crashes and other issues with no response on the forum
    for years. It has seen some activity in curl back in 2021.
  - LCC: Last stable release in September 2002.
  - Salford C: Misses winsock2 support, possibly abandoned? Last mentioned
    in 2006.
  - Borland C++: We dropped Borland C++ support in 2018.
  - MS Visual C++ 6.0: Released in 1998. curl already requires VS 2010
    (or possibly 2008) as a minimum.

  Closes #12222

- build: delete `HAVE_STDINT_H` and `HAVE_INTTYPES_H`

  We use `stdint.h` unconditionally in all places except one. These uses
  are imposed by external dependencies / features. nghttp2, quic, wolfSSL
  and `HAVE_MACH_ABSOLUTE_TIME` do require this C99 header. It means that
  any of these features make curl require a C99 compiler. (In case of
  MSVC, this means Visual Studio 2010 or newer.)

  This patch changes the single use of `stdint.h` guarded by
  `HAVE_STDINT_H` to use `stdint.h` unconditionally. Also stop using
  `inttypes.h` as an alternative there. `HAVE_INTTYPES_H` wasn't used
  anywhere else, allowing to delete this feature check as well.

  Closes #12275

Daniel Stenberg (6 Nov 2023)

- tool_operate: do not mix memory models

  Make sure 'inputpath' only points to memory allocated by libcurl so that
  curl_free works correctly.

  Pointed out by Coverity

  Follow-up to 859e88f6533f9e1f890

  Closes #12280

Stefan Eissing (6 Nov 2023)

- lib: client writer, part 2, accounting + logging

  This PR has these changes:

  Renaming of unencode_* to cwriter, e.g. client writers
  - documentation of sendf.h functions
  - move max decode stack checks back to content_encoding.c
  - define writer phase which was used as order before
  - introduce phases for monitoring inbetween decode phases
  - offering default implementations for init/write/close

  Add type paramter to client writer's do_write()
  - always pass all writes through the writer stack
  - writers who only care about BODY data will pass other writes unchanged

  add RAW and PROTOCOL client writers
  - RAW used for Curl_debug() logging of CURLINFO_DATA_IN
  - PROTOCOL used for updates to data->req.bytecount, max_filesize checks and
    Curl_pgrsSetDownloadCounter()
  - remove all updates of data->req.bytecount and calls to
    Curl_pgrsSetDownloadCounter() and Curl_debug() from other code
  - adjust test457 expected output to no longer see the excess write

  Closes #12184

Daniel Stenberg (6 Nov 2023)

- VULN-DISCLOSURE-POLICY: escape sequences are not a security flaw

  Closes #12278

Viktor Szakats (6 Nov 2023)

- rand: fix build error with autotools + LibreSSL

  autotools unexpectedly detects `arc4random` because it is also looking
  into dependency libs. One dependency, LibreSSL, happens to publish an
  `arc4random` function (via its shared lib before v3.7, also via static
  lib as of v3.8.2). When trying to use this function in `lib/rand.c`,
  its protoype is missing. To fix that, curl included a prototype, but
  that used a C99 type without including `stdint.h`, causing:

  ```
  ../../lib/rand.c:37:1: error: unknown type name 'uint32_t'
     37 | uint32_t arc4random(void);
        | ^
  1 error generated.
  ```

  This patch improves this by dropping the local prototype and instead
  limiting `arc4random` use for non-OpenSSL builds. OpenSSL builds provide
  their own random source anyway.

  The better fix would be to teach autotools to not link dependency libs
  while detecting `arc4random`.

  LibreSSL publishing a non-namespaced `arc4random` tracked here:
  https://github.com/libressl/portable/issues/928

  Regression from 755ddbe901cd0c921fbc3ac5b3775c0dc683bc73 #10672

  Reviewed-by: Daniel Stenberg
  Fixes #12257
  Closes #12274

Daniel Stenberg (5 Nov 2023)

- RELEASE-NOTES: synced

- strdup: do Curl_strndup without strncpy

  To avoid (false positive) gcc-13 compiler warnings.

  Follow-up to 4855debd8a2c1cb

  Assisted-by: Jay Satiro
  Reported-by: Viktor Szakats
  Fixes #12258

Enno Boland (5 Nov 2023)

- HTTP: fix empty-body warning

  This change fixes a compiler warning with gcc-12.2.0 when
  `-DCURL_DISABLE_BEARER_AUTH=ON` is used.

      /home/tox/src/curl/lib/http.c: In function 'Curl_http_input_auth':
      /home/tox/src/curl/lib/http.c:1147:12: warning: suggest braces around emp
  ty body in an 'else' statement [-Wempty-body]
       1147 |            ;
            |            ^

  Closes #12262

Daniel Stenberg (5 Nov 2023)

- openssl: identify the "quictls" backend correctly

  Since vanilla OpenSSL does not support the QUIC API I think it helps
  users to identify the correct OpenSSL fork in version output. The best
  (crude) way to do that right now seems to be to check if ngtcp2 support
  is enabled.

  Closes #12270

Mark Gaiser (5 Nov 2023)

- curl: improved IPFS and IPNS URL support

  Previously just ipfs://<cid> and ipns://<cid> was supported, which is
  too strict for some usecases.

  This patch allows paths and query arguments to be used too.
  Making this work according to normal http semantics:

   ipfs://<cid>/foo/bar?key=val
   ipns://<cid>/foo/bar?key=val

  The gateway url support is changed.
  It now only supports gateways in the form of:

   http://<gateway>/foo/bar
   http://<gateway>

  Query arguments here are explicitly not allowed and trigger an intended
  malformed url error.

  There also was a crash when IPFS_PATH was set with a non trailing
  forward slash. This has been fixed.

  Lastly, a load of test cases have been added to verify the above.

  Reported-by: Steven Allen
  Fixes #12148
  Closes #12152

Harry Mallon (5 Nov 2023)

- docs: KNOWN_BUGS cleanup

  * Remove other mention of hyper memory-leaks from `KNOWN_BUGS`.
    Should have been removed in 629723ecf22a8eae78d64cceec2f3bdae703ec95

  * Remove mention of aws-sigv4 sort query string from `KNOWN_BUGS`.
    Fixed in #11806

  * Remove mention of aws-sigv4 query empty value problems

  * Remove mention of aws-sigv4 missing amz-content-sha256
    Fixed in #9995

- http_aws_sigv4: canonicalise valueless query params

  Fixes #8107
  Closes #12244

Michael Kaufmann (4 Nov 2023)

- docs: preserve the modification date when copying the prebuilt man page

  The previously built man page "curl.1" must be copied with the original
  modification date, otherwise the man page is never updated.

  This fixes a bug that has been introduced with commit 2568441cab.

  Reviewed-by: Dan Fandrich
  Reviewed-by: Daniel Stenberg

  Closes #12199

Daniel Stenberg (4 Nov 2023)

- docs: remove bold from some man page SYNOPSIS sections

  In the name of consistency

  Closes #12267

- openssl: two multi pointer checks should probably rather be asserts

  ... so add the asserts now and consider removing the dynamic checks in a
  future.

  Ref: #12261
  Closes #12264

boilingoden (4 Nov 2023)

- docs: add supported version for the json write-out

  xref: https://curl.se/changes.html#7_70_0

  Closes #12266

Viktor Szakats (3 Nov 2023)

- appveyor: make VS2008-built curl tool runnable

  By linking the CRT statically. This avoids the error about missing
  runtime DLL `MSVCR90.dll` when running the freshly built `curl.exe`.

  Closes #12263

Stefan Eissing (3 Nov 2023)

- url: proxy ssl connection reuse fix

  - tunnel https proxy used for http: transfers does
    no check if proxy-ssl configuration matches
  - test cases added, test_10_12 fails on 8.4.0

  Closes #12255

Jay Satiro (3 Nov 2023)

- curl_sspi: support more revocation error names in error messages

  - Add these revocation errors to sspi error list:
    CRYPT_E_NO_REVOCATION_DLL, CRYPT_E_NO_REVOCATION_CHECK,
    CRYPT_E_REVOCATION_OFFLINE and CRYPT_E_NOT_IN_REVOCATION_DATABASE.

  Prior to this change those error codes were not matched to their macro
  name and instead shown as "unknown error".

  Before:

  schannel: next InitializeSecurityContext failed:
  Unknown error (0x80092013) - The revocation function was
  unable to check revocation because the revocation server was offline.

  After:

  schannel: next InitializeSecurityContext failed:
  CRYPT_E_REVOCATION_OFFLINE (0x80092013) - The revocation function was
  unable to check revocation because the revocation server was offline.

  Bug: https://github.com/curl/curl/issues/12239
  Reported-by: Niracler Li

  Closes https://github.com/curl/curl/pull/12241

- strdup: don't allow Curl_strndup to read past a null terminator

  - Use malloc + strncpy instead of Curl_memdup to dupe the string before
    null terminating it.

  Prior to this change if Curl_strndup was passed a length longer than
  the allocated string then it could copy out of bounds.

  This change is for posterity. Curl_strndup was added in the parent
  commit and currently none of the calls to it pass a length that would
  cause it to read past the allocated length of the input.

  Follow-up to d3b3ba35.

  Closes https://github.com/curl/curl/pull/12254

Daniel Stenberg (2 Nov 2023)

- lib: add and use Curl_strndup()

  The Curl_strndup() function is similar to memdup(), but copies 'n' bytes
  then adds a terminating null byte ('\0').

  Closes #12251

- CURPOST_POSTFIELDS.3: add CURLOPT_COPYPOSTFIELDS in SEE ALSO

Stefan Eissing (2 Nov 2023)

- pytest: use lower count in repeat tests

  - lower large iteration counts in some tests somewhat for
    the same coverage with less duration

  Closes #12248

Daniel Stenberg (2 Nov 2023)

- RELEASE-NOTES: synced

- docs: clarify that curl passes on input unfiltered

  ... for several options.

  Reported-by: Ophir Lojkine

  Closes #12249

- urlapi: when URL encoding the fragment, pass in the right length

  A benign bug because it would only add an extra null terminator.

  Made lib1560 get a test that runs this code.

  Closes #12250

Stefan Eissing (2 Nov 2023)

- vtls: late clone of connection ssl config

  - perform connection cache matching against `data->set.ssl.primary`
    and proxy counterpart
  - fully clone connection ssl config only when connection is used

  Closes #12237

- msh3: error when built with CURL_DISABLE_SOCKETPAIR set

  Reported-by: Gisle Vanem
  Closes #12252
  Fixes #12213

Daniel Stenberg (2 Nov 2023)

- hsts: skip single-dot hostname

  Reported-by: Maksymilian Arciemowicz

  Closes #12247

- vtls: fix build without proxy

  Follow-up to bf0e278a3c54bc7fee7360da17c

  closes #12243

- docs/example/keepalive.c: show TCP keep-alive options

  Closes #12242

- lib1560: verify appending blank URL encoded query string

- urlapi: skip appending NULL pointer query

  Reported-by: kirbyn17 on hackerone

  Closes #12240

- lib1560: verify setting host to "" with and without URL encode

- urlapi: avoid null deref if setting blank host to url encode

  Reported-by: kirbyn17 on hackerone

  Closes #12240

- dynbuf: assert for NULL pointer inputs

  Help us catch more mistakes.

  Closes #12238

- HTTP3: ngtcp2 builds are no longer experimental

  The other HTTP/3 backends are still experimental.

  Closes #12235

Stefan Eissing (31 Oct 2023)

- vtls: cleanup SSL config management

  - remove `Curl_ssl_get_config()`, no longer needed

  Closes #12204

Daniel Stenberg (31 Oct 2023)

- libcurl-thread.3: simplify the TLS section

  All TLS libraries curl can use are threadsafe since OpenSSL 1.1.x, August
  2016.

  Closes #12233

- configure: better --disable-http

  - disable HTTPS-proxy as well, since it can't work without HTTP

  - curl_setup: when HTTP is disabled, also disable all features that are
    HTTP-only

  - version: HTTPS-proxy only exists if HTTP support exists

  Closes #12223

- http: consider resume with CURLOPT_FAILONERRROR and 416 to be fine

  Finding a 'Content-Range:' in the response changed the handling.

  Add test case 1475 to verify -C - with 416 and Content-Range: header,
  which is almost exactly like test 194 which instead uses a fixed -C
  offset. Adjusted test 194 to also be considered fine.

  Fixes #10521
  Reported-by: Smackd0wn
  Fixes #12174
  Reported-by: Anubhav Rai
  Closes #12176

Stefan Eissing (30 Oct 2023)

- GHA: fix checkout of quictls repository to use correct branch name

  Follow-up to c868b0e30f10cd0ac7

  Closes #12232

Daniel Stenberg (30 Oct 2023)

- docs/example/localport.c: show off CURLOPT_LOCALPORT

  Closes #12230

- docs/examples/interface.c: show CURLOPT_INTERFACE use

  Although super simple.

  Closes #12229

Viktor Szakats (30 Oct 2023)

- build: fix compiler warning with auths disabled

  ```
  ./curl/lib/http.c:979:12: warning: unused function 'is_valid_auth_separator' 
  [-Wunused-function]
  static int is_valid_auth_separator(char ch)
             ^
  5 warnings generated.
  ```

  Follow-up to e92edfbef64448ef461117769881f3ed776dec4e #11490

  Closes #12227

- build: require Windows XP or newer

  After this patch we assume availability of `getaddrinfo` and
  `freeaddrinfo`, first introduced in Windows XP. Meaning curl
  now requires building for Windows XP as a minimum.

  TODO: assume these also in autotools.

  Ref: https://github.com/curl/curl/pull/12221#issuecomment-1783761806
  Closes #12225

- appveyor: bump one job to OpenSSL 3.1 (was 1.1.1)

  Use 3.1 with the modern runner image.

  We still use 1.1.1 in 8 jobs.

  1.1.1 is EOL since 2023-09-11:
  https://www.openssl.org/blog/blog/2023/03/28/1.1.1-EOL/

  Also:
  - add missing SSL-backend to job descriptions.
  - tidy up CPU in job descriptions.

  Closes #12226

Daniel Stenberg (30 Oct 2023)

- RELEASE-NOTES: synced

- GHA: bump ngtcp2, nghttp3, nghttp2 and quictls versions

  ngtcp2 1.0.1
  nghttp3 1.0.0
  nghttp2 1.58.0
  quictls 3.1.4+quic

  also sync HTTP3.md with these changes

  Closes #12132

Kareem (29 Oct 2023)

- wolfssl: add default case for wolfssl_connect_step1 switch

  Closes #12218

Jay Satiro (29 Oct 2023)

- curl_setup: disallow Windows IPv6 builds missing getaddrinfo

  - On Windows if IPv6 is enabled but getaddrinfo is missing then #error
    the build.

  curl can be built with IPv6 support (ENABLE_IPV6) but without the
  ability to resolve hosts to IPv6 addresses (HAVE_GETADDRINFO). On
  Windows this is highly unlikely and should be considered a bad build
  configuration.

  Such a bad configuration has already given us a bug that was hard to
  diagnose. See #12134 and #12136 for discussion.

  Ref: https://github.com/curl/curl/issues/12134
  Ref: https://github.com/curl/curl/pull/12136

  Closes https://github.com/curl/curl/pull/12221

Nico Rieck (29 Oct 2023)

- openssl: make CURLSSLOPT_NATIVE_CA import Windows intermediate CAs

  - If CURLSSLOPT_NATIVE_CA on Windows then import from intermediate CA
    "CA" store after importing from root CA "ROOT" store.

  This change allows curl to work in situations where a server does not
  send all intermediate certs and they are present in the "CA" store (the
  store with intermediate CAs). This is already allowed by the Schannel
  backend.

  Also this change makes partial chain verification possible for those
  certs since we allow partial chain verification by default for OpenSSL
  (unless CURLSSLOPT_NO_PARTIALCHAIN). This is not allowed by the Schannel
  backend.

  Prior to this change CURLSSLOPT_NATIVE_CA only imported "ROOT" certs.

  Fixes https://github.com/curl/curl/issues/12155
  Closes https://github.com/curl/curl/pull/12185

Viktor Szakats (28 Oct 2023)

- Makefile.mk: fix `-rtmp` option for non-Windows [ci skip]

Daniel Stenberg (28 Oct 2023)

- asyn-ares: handle no connection in the addrinfo callback

  To avoid crashing.

  Follow-up from 56a4db2
  Closes #12219

Jay Satiro (28 Oct 2023)

- hostip6: fix DEBUG_ADDRINFO builds

  - Removed unused and incorrect parameter from dump_addrinfo().

  Bug: https://github.com/curl/curl/commit/56a4db2e#commitcomment-131050442
  Reported-by: Gisle Vanem

  Closes https://github.com/curl/curl/pull/12212

Viktor Szakats (28 Oct 2023)

- Makefile.mk: restore `_mingw.h` for default `_WIN32_WINNT`

  In 8.4.0 we deleted `_mingw.h` as part of purging old-mingw support.
  Turns out `_mingw.h` had the side-effect of setting a default
  `_WIN32_WINNT` value expected by `lib/config-win32.h` to enable
  `getaddrinfo` support in `Makefile.mk` mingw-w64 builds. This caused
  disabling support for this unless specifying the value manually.

  Restore this header and update its comment to tell why we continue
  to need it.

  This triggered a regression in official Windows curl builds starting
  with 8.4.0_1. Fixed in 8.4.0_6. (8.5.0 will be using CMake.)

  Regression from 38029101e2d78ba125732b3bab6ec267b80a0e72 #11625

  Reported-by: zhengqwe on github
  Helped-by: Nico Rieck
  Fixes #12134
  Fixes #12136
  Closes #12217

- hostip: silence compiler warning `-Wparentheses-equality`

  Seen with LLVM 17.

  ```
  hostip.c:1336:22: warning: equality comparison with extraneous parentheses [-
  Wparentheses-equality]
   1336 |        (a->ai_family == PF_INET)) {
        |         ~~~~~~~~~~~~~^~~~~~~~~~
  hostip.c:1336:22: note: remove extraneous parentheses around the comparison t
  o silence this warning
   1336 |        (a->ai_family == PF_INET)) {
        |        ~             ^         ~
  hostip.c:1336:22: note: use '=' to turn this equality comparison into an assi
  gnment
   1336 |        (a->ai_family == PF_INET)) {
        |                      ^~
        |                      =
  1 warning generated.
  ```

  Follow-up to b651aba0962bb31353f55de4dc35f745952a1b10 #12145

  Reviewed-by: Daniel Stenberg
  Closes #12215

Stefan Eissing (27 Oct 2023)

- doh: use PIPEWAIT when HTTP/2 is attempted

  Closes #12214

Daniel Stenberg (27 Oct 2023)

- setopt: remove outdated cookie comment

  Closes #12206

Stefan Eissing (27 Oct 2023)

- cfilter: provide call to tell connection to forget a socket

  - fixed libssh.c workaround for a socket being closed by
    the library
  - eliminate the terrible hack in cf-socket.c to guess when
    this happened and try not closing the socket again.
  - fixes race in eyeballing when socket could have failed to
    be closed for a discarded connect attempt

  Closes #12207

- url: protocol handler lookup tidy-up

  - rename lookup to what it does
  - use ARRAYSIZE instead of NULL check for end
  - offer alternate lookup for 0-terminated strings

  Closes #12216

Viktor Szakats (27 Oct 2023)

- build: variadic macro tidy-ups

  - delete unused `HAVE_VARIADIC_MACROS_C99/GCC` feature checks.
    (both autotools and CMake.)
  - delete duplicate `NULL` check in `Curl_trc_cf_infof()`.
  - fix compiler warning in `CURL_DISABLE_VERBOSE_STRINGS` builds.
    ```
    ./lib/cf-socket.c:122:41: warning: unused parameter 'data' [-Wunused-parame
  ter]
    static void nosigpipe(struct Curl_easy *data,
                                            ^
    ```
  - fix `#ifdef` comments in `lib/curl_trc.{c,h}`.
  - fix indentation in some `infof()` calls.

  Follow-up to dac293cfb7026b1ca4175d88b80f1432d3d3c684 #12167

  Cherry-picked from #12105
  Closes #12210

- cmake: speed up threads setup for Windows

  Win32 threads are always available. We enabled them unconditionally
  (with `ENABLE_THREADED_RESOLVER`). CMake built-in thread detection
  logic has this condition hard-coded for Windows as well (since at least
  2007).

  Instead of doing all the work of detecting pthread combinations on
  Windows, then discarding those results, skip these efforts and assume
  built-in thread support when building for Windows.

  This saves 1-3 slow CMake configuration steps.

  Reviewed-by: Daniel Stenberg
  Closes #12202

- cmake: speed up zstd detection

  Before this patch we detected the presence of a specific zstd API to
  see if we can use the library. zstd published that API in its first
  stable release: v1.0.0 (2016-08-31).

  Replace that method by detecting the zstd library version instead and
  accepting if it's v1.0.0 or newer. Also display this detected version
  and display a warning if the zstd found is unfit for curl.

  We use the same version detection method as zstd itself, via its public
  C header.

  This deviates from autotools which keeps using the slow method of
  looking for the API by building a test program. The outcome is the same
  as long as zstd keeps offering this API.

  Ref: https://github.com/facebook/zstd/commit/5a0c8e24395079f8e8cdc90aa1659cd5
  ab1b7427 (2016-08-12, committed)
  Ref: https://github.com/facebook/zstd/releases/tag/v0.8.1 (2016-08-18, first 
  released)
  Ref: https://github.com/facebook/zstd/releases/tag/v1.0.0

  Reviewed-by: Daniel Stenberg
  Closes #12200

Daniel Stenberg (26 Oct 2023)

- openssl: fix infof() to avoid compiler warning for %s with null

  vtls/openssl.c: In function ‘ossl_connect_step2’:
  ../lib/curl_trc.h:120:10: error: ‘%s’ directive argument is null [-Werror
  =format-overflow=]
    120 |          Curl_infof(data, __VA_ARGS__); } while(0)
        |          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  vtls/openssl.c:4008:5: note: in expansion of macro ‘infof’
   4008 |     infof(data, "SSL connection using %s / %s / %s / %s",
        |     ^~~~~
  vtls/openssl.c:4008:49: note: format string is defined here
   4008 |     infof(data, "SSL connection using %s / %s / %s / %s",
        |                                                 ^~

  Follow-up to b6e6d4ff8f253c8b8055bab
  Closes #12196

Stefan Eissing (26 Oct 2023)

- lib: apache style infof and trace macros/functions

  - test for a simplified C99 variadic check
  - args to infof() in --disable-verbose are no longer disregarded but
    must compile.

  Closes #12167
  Fixes #12083
  Fixes #11880
  Fixes #11891

Daniel Stenberg (26 Oct 2023)

- RELEASE-NOTES: synced

Stefan Eissing (26 Oct 2023)

- urldata: move async resolver state from easy handle to connectdata

  - resolving is done for a connection, not for every transfer
  - save create/dup/free of a cares channel for each transfer
  - check values of setopt calls against a local channel if no
    connection has been attached yet, when needed.

  Closes #12198

Daniel Stenberg (26 Oct 2023)

- CURLOPT_WRITEFUNCTION.3: clarify what libcurl returns for CURL_WRITEFUNC_ERRO
  R

  It returns CURLE_WRITE_ERROR. It was not previously stated clearly.

  Reported-by: enWILLYado on github
  Fixes #12201
  Closes #12203

Viktor Szakats (25 Oct 2023)

- autotools: update references to deleted `crypt-auth` option

  Delete leftovers of the `crypt-auth` `./configure` option and
  add the new ones that replaced them.

  Follow-up to e92edfbef64448ef461117769881f3ed776dec4e #11490

  Reviewed-by: Daniel Stenberg
  Closes #12194

Stefan Eissing (25 Oct 2023)

- lib: introduce struct easy_poll_set for poll information

  Connection filter had a `get_select_socks()` method, inspired by the
  various `getsocks` functions involved during the lifetime of a
  transfer. These, depending on transfer state (CONNECT/DO/DONE/ etc.),
  return sockets to monitor and flag if this shall be done for POLLIN
  and/or POLLOUT.

  Due to this design, sockets and flags could only be added, not
  removed. This led to problems in filters like HTTP/2 where flow control
  prohibits the sending of data until the peer increases the flow
  window. The general transfer loop wants to write, adds POLLOUT, the
  socket is writeable but no data can be written.

  This leads to cpu busy loops. To prevent that, HTTP/2 did set the
  `SEND_HOLD` flag of such a blocked transfer, so the transfer loop cedes
  further attempts. This works if only one such filter is involved. If a
  HTTP/2 transfer goes through a HTTP/2 proxy, two filters are
  setting/clearing this flag and may step on each other's toes.

  Connection filters `get_select_socks()` is replaced by
  `adjust_pollset()`. They get passed a `struct easy_pollset` that keeps
  up to `MAX_SOCKSPEREASYHANDLE` sockets and their `POLLIN|POLLOUT`
  flags. This struct is initialized in `multi_getsock()` by calling the
  various `getsocks()` implementations based on transfer state, as before.

  After protocol handlers/transfer loop have set the sockets and flags
  they want, the `easy_pollset` is *always* passed to the filters. Filters
  "higher" in the chain are called first, starting at the first
  not-yet-connection one. Each filter may add sockets and/or change
  flags. When all flags are removed, the socket itself is removed from the
  pollset.

  Example:

   * transfer wants to send, adds POLLOUT
   * http/2 filter has a flow control block, removes POLLOUT and adds
     POLLIN (it is waiting on a WINDOW_UPDATE from the server)
   * TLS filter is connected and changes nothing
   * h2-proxy filter also has a flow control block on its tunnel stream,
     removes POLLOUT and adds POLLIN also.
   * socket filter is connected and changes nothing
   * The resulting pollset is then mixed together with all other transfers
     and their pollsets, just as before.

  Use of `SEND_HOLD` is no longer necessary in the filters.

  All filters are adapted for the changed method. The handling in
  `multi.c` has been adjusted, but its state handling the the protocol
  handlers' `getsocks` method are untouched.

  The most affected filters are http/2, ngtcp2, quiche and h2-proxy. TLS
  filters needed to be adjusted for the connecting handshake read/write
  handling.

  No noticeable difference in performance was detected in local scorecard
  runs.

  Closes #11833

Daniel Stenberg (25 Oct 2023)

- tests/README: SOCKS tests are not using OpenSSH, it has its own server

  Follow-up to 04fd67555cc

  Closes #12195

Jacob Hoffman-Andrews (25 Oct 2023)

- tets: make test documentation more user-friendly

  Put the instructions to run tests right at the top of tests/README.md.

  Give instructions to read the runtests.1 man page for information
  about flags. Delete redundant copy of the flags documentation in the
  README.

  Add a mention in README.md of the important parallelism flag, to make
  test runs go much faster.

  Move documentation of output line format into the runtests.1 man page,
  and update it with missing flags.

  Fix the order of two flags in the man page.

  Closes #12193

Viktor Szakats (24 Oct 2023)

- cmake: pre-fill rest of detection values for Windows

  The goal of this patch is to avoid unnecessary feature detection work
  when doing Windows builds with CMake. Do this by pre-filling well-known
  detection results for Windows and specifically for mingw-w64 and MSVC
  compilers. Also limit feature checks to platforms where the results are
  actually used. Drop a few redundant ones. And some tidying up.

  - pre-fill remaining detection values in Windows CMake builds.

    Based on actual detection results observed in CI runs, preceding
    similar work over libssh2 and matching up values with
    `lib/config-win32.h`.

    This brings down CMake configuration time from 58 to 14 seconds on the
    same local machine.

    On AppVeyor CI this translates to:
    - 128 seconds -> 50 seconds VS2022 MSVC with OpenSSL (per CMake job):
      https://ci.appveyor.com/project/curlorg/curl/builds/48208419/job/4gw66ecr
  jpy7necb#L296
      https://ci.appveyor.com/project/curlorg/curl/builds/48217440/job/8m4fwrr2
  fe249uo8#L186
    - 62 seconds -> 16 seconds VS2017 MINGW (per CMake job):
      https://ci.appveyor.com/project/curlorg/curl/builds/48208419/job/s1y8q5iv
  lcs7ub29?fullLog=true#L290
      https://ci.appveyor.com/project/curlorg/curl/builds/48217440/job/pchpxyjs
  yc9kl13a?fullLog=true#L194

    The formula is about 1-3 seconds delay for each detection. Almost all
    of these trigger a full compile-link cycle behind the scenes, slow
    even today, both cross and native, mingw-w64 and apparently MSVC too.
    Enabling .map files or other custom build features slows it down
    further. (Similar is expected for autotools configure.)

  - stop detecting `idn2.h` if idn2 was deselected.
    autotools does this.

  - stop detecting `idn2.h` if idn2 was not found.
    This deviates from autotools. Source code requires both header and
    lib, so this is still correct, but faster.

  - limit `ADDRESS_FAMILY` detection to Windows.

  - normalize `HAVE_WIN32_WINNT` value to lowercase `0x0a12` format.

  - pre-fill `HAVE_WIN32_WINNT`-dependent detection results.
    Saving 4 (slow) feature-detections in most builds: `getaddrinfo`,
    `freeaddrinfo`, `inet_ntop`, `inet_pton`

  - fix pre-filled `HAVE_SYS_TIME_H`, `HAVE_SYS_PARAM_H`,
    `HAVE_GETTIMEOFDAY` for mingw-w64.
    Luckily this do not change build results, as `WIN32` took
    priority over `HAVE_GETTIMEOFDAY` with the current source
    code.

  - limit `HAVE_CLOCK_GETTIME_MONOTONIC_RAW` and
    `HAVE_CLOCK_GETTIME_MONOTONIC` detections to non-Windows.
    We're not using these in the source code for Windows.

  - reduce compiler warning noise in CMake internal logs:
    - fix to include `winsock2.h` before `windows.h`.
      Apply it to autotools test snippets too.
    - delete previous `-D_WINSOCKAPI_=` hack that aimed to fix the above.
    - cleanup `CMake/CurlTests.c` to emit less warnings.

  - delete redundant `HAVE_MACRO_SIGSETJMP` feature check.
    It was the same check as `HAVE_SIGSETJMP`.

  - delete 'experimental' marking from `CURL_USE_OPENSSL`.

  - show CMake version via `CMakeLists.txt`.
    Credit to the `zlib-ng` project for the idea:
    https://github.com/zlib-ng/zlib-ng/blob/61e181c8ae93dbf56040336179c9954078b
  d1399/CMakeLists.txt#L7

  - make `CMake/CurlTests.c` pass `checksrc`.

  - `CMake/WindowsCache.cmake` tidy-ups.

  - replace `WIN32` guard with `_WIN32` in `CMake/CurlTests.c`.

  Closes #12044

Jay Satiro (24 Oct 2023)

- page-footer: clarify exit code 25

  - Clarify that curl tool exit code 25 means an upload failed to start.

  Exit code 25 is equivalent to CURLE_UPLOAD_FAILED (25). Prior to this
  change the documentation only mentioned the case of FTP STOR failing.

  Reported-by: Emanuele Torre

  Ref: https://github.com/curl/curl/blob/curl-8_4_0/docs/libcurl/libcurl-errors
  .3#L113-L115

  Fixes https://github.com/curl/curl/issues/12189
  Closes https://github.com/curl/curl/pull/12190

Daniel Stenberg (24 Oct 2023)

- scripts/cijobs.pl: adjust for appveyor

  Follow-up to a1d73a6bb

Alex Bozarth (24 Oct 2023)

- OpenSSL: Include SIG and KEM algorithms in verbose

  Currently the verbose output does not include which algorithms are used
  for the signature and key exchange when using OpenSSL. Including the
  algorithms used will enable better debugging when working on using new
  algorithm implementations. Know what algorithms are used has become more
  important with the fast growing research into new quantum-safe
  algorithms.

  This implementation includes a build time check for the OpenSSL version
  to use a new function that will be included in OpenSSL 3.2 that was
  introduced in openssl/openssl@6866824

  Based-on-patch-by: Martin Schmatz <mrt@zurich.ibm.com>
  Closes #12030

Daniel Stenberg (23 Oct 2023)

- http2: provide an error callback and failf the message

  Getting nghttp2's error message helps users understand what's going
  on. For example when the connection is brought down due a forbidden
  header is used - as that header is then not displayed by curl itself.

  Example:

    curl: (92) Invalid HTTP header field was received: frame type: 1,
    stream: 1, name: [upgrade], value: [h2,h2c]

  Ref: #12172
  Closes #12179

Turiiya (23 Oct 2023)

- BINDINGS: add V binding

  Closes #12182

Daniel Stenberg (22 Oct 2023)

- configure: check for the fseeko declaration too

  ... and make the code require both symbol and declaration.

  This is because for Android, the symbol is always present in the lib at
  build-time even when not actually available in run-time.

  Assisted-by: Viktor Szakats
  Reported-by: 12932 on github
  Fixes #12086
  Closes #12158

Viktor Szakats (22 Oct 2023)

- cmake: fix OpenSSL quic detection in quiche builds

  An orphan call to `CheckQuicSupportInOpenSSL()` remained after a recent
  update when checking QUIC for quiche. Move back QUIC detection to
  a function and fixup callers to use that. Also make sure that quiche
  gets QUIC from BoringSSL, because it doesn't support other forks at this
  time.

  Regression from dee310d54261f9a8416e87d50bccfe2cbe404949 #11555

  Reported-by: Casey Bodley <cbodley@redhat.com>
  Fixes #12160
  Closes #12162

Daniel Stenberg (22 Oct 2023)

- RELEASE-NOTES: synced

  bump to 8.5.0 for pending release

Dan Fandrich (21 Oct 2023)

- test3103: add missing quotes around a test tag attribute

Loïc Yhuel (21 Oct 2023)

- tool: fix --capath when proxy support is disabled

  After 95e8515ca0, --capath always sets CURLOPT_PROXY_CAPATH, which fails
  with CURLE_UNKNOWN_OPTION when proxy support is disabled.

  Closes #12089

Daniel Stenberg (21 Oct 2023)

- openldap: move the alloc of ldapconninfo to *connect()

  Fixes a minor memory leak on LDAP connection reuse.

  Doing the allocation already in *setup_connection() is wrong since that
  connect struct might get discarded early when an existing connection is
  reused instead.

  Closes #12166

- openldap: set the callback argument in oldap_do

  ... to make sure it has the current 'data' pointer and not a stale old
  one.

  Reported-by: Dan Fandrich
  Closes #12166

- gnutls: support CURLSSLOPT_NATIVE_CA

  Remove the CURL_CA_FALLBACK logic. That build option was added to allow
  primarily OpenSSL to use the default paths for loading the CA certs. For
  GnuTLS it was instead made to load the "system certs", which is
  different and not desirable.

  The native CA store loading is now asked for with this option.

  Follow-up to 7b55279d1d856

  Co-authored-by: Jay Satiro

  Closes #12137

Stefan Eissing (21 Oct 2023)

- RTSP: improved RTP parser

  - fix HTTP header parsing to report incomplete
    lines it buffers as consumed!
  - re-implement the RTP parser for interleave RTP
    messages for robustness. It is now keeping its
    state at the connection
  - RTSP protocol handler "readwrite" implementation
    now tracks if the response is before/in/after
    header parsing or "in" a bod by calling
    "Curl_http_readwrite_headers()" itself. This
    allows it to know when non-RTP bytes are "junk"
    or HEADER or BODY.
  - tested with #12035 and various small receive
    sizes where current master fails

  Closes #12052

- http2: header conversion tightening

  - fold the code to convert dynhds to the nghttp2 structs
    into a dynhds internal method
  - saves code duplication
  - pacifies compiler analyzers

  Closes #12097

Daniel Stenberg (21 Oct 2023)

- curl_ntlm_wb: fix elif typo

  Reported-by: Manfred Schwarb
  Follow-up to d4314cdf65ae
  Bug: https://github.com/curl/curl/commit/d4314cdf65aee295db627016934bd9eb621a
  b077#r130551295

Dan Fandrich (20 Oct 2023)

- test1683: remove commented-out check alternatives

  Python precheck/postcheck alternatives were included but commented out.
  Since these are not used and perl is guaranteed to be available to run
  the perl versions anyway, the Python ones are removed.

Daniel Stenberg (20 Oct 2023)

- hostip: show the list of IPs when resolving is done

  Getting 'curl.se' today then gets this verbose output which might help
  debugging connectivity related matters.

  * Host curl.se:80 was resolved.
  * IPv6: 2a04:4e42::347, 2a04:4e42:200::347, 2a04:4e42:400::347,
    2a04:4e42:600::347, 2a04:4e42:800::347, 2a04:4e42:a00::347,
    2a04:4e42:c00::347, 2a04:4e42:e00::347
  * IPv4: 151.101.193.91, 151.101.1.91, 151.101.65.91, 151.101.129.91

  Co-authored-by: Jay Satiro
  Closes #12145

rilysh (20 Oct 2023)

- docs: fix function typo in curl_easy_option_next.3

  Closes #12170

Daniel Stenberg (20 Oct 2023)

- vssh: remove the #ifdef for Curl_ssh_init, use empty macro

  In the same style as other init calls

- easy: remove duplicate wolfSSH init call

  It is already done in Curl_ssh_init() where it belongs.

  Closes #12168

- socks: make SOCKS5 use the CURLOPT_IPRESOLVE choice

  Fixes #11949
  Reported-by: Ammar Faizi
  Closes #12163

- urldata: move the 'internal' boolean to the state struct

  ... where all the other state bits for the easy handles live.

  Closes #12165

- url: don't touch the multi handle when closing internal handles

  Reported-by: Maksymilian Arciemowicz
  Closes #12165

Faraz Fallahi (19 Oct 2023)

- getenv: PlayStation doesn't have getenv()

  Closes #12140

Daniel Stenberg (19 Oct 2023)

- transfer: only reset the FTP wildcard engine in CLEAR state

  To avoid the state machine to start over and redownload all the files
  *again*.

  Reported-by: lkordos on github
  Regression from 843b3baa3e3cb228 (shipped in 8.1.0)
  Bisect-by: Dan Fandrich
  Fixes #11775
  Closes #12156

Stefan Eissing (19 Oct 2023)

- GHA: move mod_h2 version in CI to v2.0.25

  Closes #12157

Daniel Stenberg (19 Oct 2023)

- ntlm_wb: use pipe instead of socketpair when possible

  Closes #12149

- RELEASE-NOTES: synced

- asyn-thread: use pipe instead of socketpair for IPC when available

  If pipe() is present. Less overhead.

  Helped-by: Viktor Szakats
  Closes #12146

Dan Fandrich (17 Oct 2023)

- tests: Fix Windows test helper tool search & use it for handle64

  The checkcmd() and checktestcmd() functions would not have worked on
  Windows due to hard-coding the UNIX PATH separator character and not
  adding .exe file extension. This meant that tools like stunnel, valgrind
  and nghttpx would not have been found and used on Windows, and
  inspection of previous test runs show none of those being found in pure
  Windows CI builds.

  With this fixed, they can be used to detect the handle64.exe program
  before attempting to use it. When handle64.exe was called
  unconditionally without it existing, it caused perl to abort the test
  run with the error

      The running command stopped because the preference variable
      "ErrorActionPreference" or common parameter is set to Stop:
      sh: handle64.exe: command not found

  Closes #12115

Daniel Stenberg (17 Oct 2023)

- multi: use pipe instead of socketpair to *wakeup()

  If pipe() is present. Less overhead.

  Closes #12142

Jay Satiro (17 Oct 2023)

- build: fix 'threadsafe' feature detection for older gcc

  - Add 'threadsafe' to the feature list shown during build if POSIX
    threads are being used.

  This is a follow-up to 5adb6000 which added support for building a
  thread-safe libcurl with older versions of gcc where atomic is not
  available but pthread is.

  Reported-by: Dan Fandrich
  Co-authored-by: Dan Fandrich

  Fixes https://github.com/curl/curl/issues/12125
  Closes https://github.com/curl/curl/pull/12127

Daniel Stenberg (16 Oct 2023)

- test729: verify socks4a with excessive proxy user name length

- socks: better buffer size checks for socks4a user and hostname

  Also limit the proxy user name to 255 bytes, which is the same limit as
  in SOCKS5.

  Reported-by: sd0 on hackerone
  Closes #12139

- curl.h: on FreeBSD include sys/param.h instead of osreldate.h

  Should things build on Playstation as well

  Fixes #12107
  Reported-by: Faraz Fallahi
  Closes #12123

Marcin Rataj (16 Oct 2023)

- tool_operate: fix links in ipfs errors

  URL fragment links generated from headers in
  https://curl.se/docs/ipfs.html are lowercase.

  Closes #12133

Viktor Szakats (15 Oct 2023)

- cmake: replace `check_library_exists_concat()`

  The idea of `check_library_exists_concat()` is that it detects an
  optional component and adds it to the list of libs that we also use in
  subsequent component checks. This caused problems when detecting
  components with unnecessary dependencies that were not yet built.

  CMake offers the `CMAKE_REQUIRED_LIBRARIES` variable to set libs used
  for component checks, which we already use in most cases. That left 4
  uses of `check_library_exists_concat()`. Only one of these actually
  needed the 'concat' feature (ldap/lber).

  Delete this function and replace it with standard
  `check_library_exists()` and manual management of our `CURL_LIBS`
  list we use when linking build targets. And special logic to handle the
  ldap/lber case.

  (We have a similar function for headers: `check_include_file_concat()`.
  It works, but problematic for performance reasons and because it hides
  the actual headers required in `check_symbol_exists()` calls.)

  Ref: #11537 #11558
  Fixes #11285
  Fixes #11648
  Closes #12070

LoRd_MuldeR (15 Oct 2023)

- tool_cb_wrt: fix write output for very old Windows versions

  - Pass missing parameter for 'lpNumberOfCharsWritten' to WriteConsoleW()
    function.

  Apparently this parameter was *not* optional on older Windows versions.

  Issue observed on Windows XP SP2. Issue not observed on Windows 7 SP1.
  So at some point between those two Microsoft changed the behavior.

  Prior to this change, on those versions if parameter is NULL then the
  function call fails with error ERROR_INVALID_ACCESS.

  Regression since af3f4e41.

  Ref: https://github.com/MicrosoftDocs/Console-Docs/issues/299

  Fixes https://github.com/curl/curl/issues/12131
  Closes https://github.com/curl/curl/pull/12130

Jay Satiro (15 Oct 2023)

- tool_urlglob: fix build for old gcc versions

  - Don't use __builtin_mul_overflow for GCC 4 and earlier.

  The function was added in GCC 5.

  Ref: https://gcc.gnu.org/gcc-5/changes.html

  Reported-by: Dan Fandrich

  Fixes https://github.com/curl/curl/issues/12124
  Closes https://github.com/curl/curl/pull/12128

Carlos Henrique Lima Melara (14 Oct 2023)

- docs/libcurl: fix three minor man page format mistakes

  Reported-by: Samuel Henrique

  Closes https://github.com/curl/curl/pull/12126

Jay Satiro (14 Oct 2023)

- tests/server: add more SOCKS5 handshake error checking

  - Add additional checking for missing and too-short SOCKS5 handshake
    messages.

  Prior to this change the SOCKS5 test server did not check that all parts
  of the handshake were received successfully. If those parts were missing
  or too short then the server would access uninitialized memory.

  This issue was discovered in CI job 'memory-sanitizer' test results.
  Test 2055 was failing due to the SOCKS5 test server not running. It was
  not running because either it crashed or memory sanitizer aborted it
  during Test 728. Test 728 connects to the SOCKS5 test server on a
  redirect but does not send any data on purpose. The test server was not
  prepared for that.

  Reported-by: Dan Fandrich

  Fixes https://github.com/curl/curl/issues/12117
  Closes https://github.com/curl/curl/pull/12118

Daniel Stenberg (14 Oct 2023)

- RELEASE-NOTES: synced

Sohom Datta (14 Oct 2023)

- tool_getparam: limit --rate to be smaller than number of ms

  Currently, curl allows users to specify absurd request rates that might
  be higher than the number of milliseconds in the unit (ex: curl --rate
  3600050/h http://localhost:8080 does not error out despite there being
  only 3600000ms in a hour).

  This change adds a conditional check before the millisecond calculation
  making sure that the number is not higher than the numerator (the unit)
  If the number is higher, curl errors out with PARAM_NUMBER_TOO_LARGE

  Closes #12116

Daniel Stenberg (14 Oct 2023)

- opts: fix two minor man page format mistakes

Jay Satiro (14 Oct 2023)

- curl_trc: remove a bad assertion

  - Remove DEBUGASSERT that an internal handle must not have user
    private_data set before calling the user's debug callback.

  This is a follow-up to 0dc40b2a. The user can distinguish their easy
  handle from an internal easy handle by setting CURLOPT_PRIVATE on their
  easy handle. I had wrongly assumed that meant the user couldn't then
  set CURLOPT_PRIVATE on an internal handle as well.

  Bug: https://github.com/curl/curl/pull/12060#issuecomment-1754594697
  Reported-by: Daniel Stenberg

  Closes https://github.com/curl/curl/pull/12104

Dan Fandrich (13 Oct 2023)

- test613: stop showing an error on missing output file

  This test would show an error message if the output was missing during
  the log post-processing step, but the message was not captured by the
  test harness and wasn't useful since the normal golden log file
  comparison would the problem more clearly.

Stefan Eissing (13 Oct 2023)

- quic: manage connection idle timeouts

  - configure a 120s idle timeout on our side of the connection
  - track the timestamp when actual socket IO happens
  - check IO timestamp to our *and* the peer's idle timeouts
    in "is this connection alive" checks

  Reported-by: calvin2021y on github
  Fixes #12064
  Closes #12077

Dan Fandrich (13 Oct 2023)

- CI: ignore test 286 on Appveyor gcc 9 build

  This test fails sometimes with a super fast retry loop due to what may
  just be a compiler bug. The test results are ignored on the one CI job
  where it occurs because there seems to be nothing we can do to fix it.

  Fixes #12040
  Closes #12106

Viktor Szakats (13 Oct 2023)

- lib: fix gcc warning in printf call

  Do not pass NULL to printf %s.

  Seen with gcc 13.2.0 on Debian:
  ```
  .../curl/lib/connect.c:696:27: warning: '%s' directive argument is null [-Wfo
  rmat-overflow=]
  ```
  Ref: https://github.com/curl/curl-for-win/actions/runs/6476161689/job/1758442
  6483#step:3:11104

  Ref: #10284
  Co-authored-by: Jay Satiro
  Closes #12082

Alex Klyubin (13 Oct 2023)

- http2: safer invocation of populate_binsettings

  populate_binsettings now returns a negative value on error, instead of a
  huge positive value. Both places which call this function have been
  updated to handle this change in its contract.

  The way populate_binsettings had been used prior to this change the huge
  positive values -- due to signed->unsigned conversion of the potentially
  negative result of nghttp2_pack_settings_payload which returns negative
  values on error -- are not possible. But only because http2.c currently
  always provides a large enough output buffer and provides H2 SETTINGS
  IVs which pass the verification logic inside nghttp2.  If the
  verification logic were to change or if http2.c started passing in more
  IVs without increasing the output buffer size, the overflow could become
  reachable, and libcurl/curl might start leaking memory contents to
  servers/proxies...

  Closes #12101

Daniel Stenberg (13 Oct 2023)

- openssl: avoid BN_num_bits() NULL pointer derefs

  Reported-by: icy17 on github
  Fixes #12099
  Closes #12100

- wolfssl: require WOLFSSL_SYS_CA_CERTS for loading system CA

  This define is set in wolfssl's options.h file when this function and
  feature is present. Handles both builds with the feature explicitly
  disabled and wolfSSL versions before 5.5.2 - which introduced this API
  call.

  Closes #12108

- tool_urlglob: make multiply() bail out on negative values

  - Does not work correctly with negative values
  - use __builtin_mul_overflow() on gcc

  Reported-by: Torben Dury
  Closes #12102

Loïc Yhuel (13 Oct 2023)

- cmake: fix CURL_DISABLE_GETOPTIONS

  - Add CURL_DISABLE_GETOPTIONS to curl_config.h.cmake.

  Prior to this change the option had no effect because it was missing
  from that file.

  Closes https://github.com/curl/curl/pull/12091

- easy_lock: add a pthread_mutex_t fallback

  This allows to keep the init threadsafe with gcc < 4.9.0 (no C11
  atomics).

  Closes https://github.com/curl/curl/pull/12090

Viktor Szakats (12 Oct 2023)

- CI: add autotools, out-of-tree, debug build to distro check job

  Add a job that builds curl from a generated source tarball sample, with
  autotools, out-of-tree, in debug mode.

  Ref: #12085
  Closes #12088

Daniel Stenberg (12 Oct 2023)

- http: avoid Expect: 100-continue if Upgrade: is used

  Reported-by: Daniel Jelinski
  Fixes #12022
  Closes #12062

Jan Alexander Steffens (heftig) (12 Oct 2023)

- docs: use SOURCE_DATE_EPOCH for generated manpages

  This should make builds from Git reproducible.

  Closes #12092

Daniel Stenberg (12 Oct 2023)

- RELEASE-NOTES: synced

  Bumped to 8.4.1

Viktor Szakats (12 Oct 2023)

- cmake: fix `HAVE_H_ERRNO_ASSIGNABLE` detection

  Fix `HAVE_H_ERRNO_ASSIGNABLE` to not run, only compile its test snippet,
  aligning this with autotools. This fixes an error when doing
  cross-builds and also actually detects this feature. It affected systems
  not allowlisted into this, e.g. SerenityOS.

  We used this detection result to enable `HAVE_GETADDRINFO_THREADSAFE`.

  Follow-up to 04a3a377d83fd72c4cf7a96c9cb6d44785e33264 #11979
  Ref: #12095 (closed in favour of this patch)
  Ref: #11964 (effort to sync cmake detections with autotools)

  Reported-by: Kartatz on Github
  Assisted-by: Kartatz on Github
  Fixes #12093
  Closes #12094

- build: add `src/.checksrc` to source tarball

  Regression from e5bb88b8f824ed87620bd923552534c83c2a516e #11958

  Bug: https://github.com/curl/curl/pull/11958#issuecomment-1757079071
  Reported-by: Romain Geissler
  Fixes #12084
  Closes #12085

Version 8.4.0 (11 Oct 2023)

Daniel Stenberg (11 Oct 2023)

- RELEASE-NOTES: synced

- THANKS: add contributors from 8.4.0

Jay Satiro (11 Oct 2023)

- socks: return error if hostname too long for remote resolve

  Prior to this change the state machine attempted to change the remote
  resolve to a local resolve if the hostname was longer than 255
  characters. Unfortunately that did not work as intended and caused a
  security issue.

  Bug: https://curl.se/docs/CVE-2023-38545.html

Stefan Eissing (10 Oct 2023)

- CI: remove slowed-network tests

  - remove these tests as they are currently not reliable in our CI
    setups.

  curl handles the test cases, but CI sometimes fails on these due to
  additional conditions. Rather than mix them in, an additional CI job
  will be added in the future that is specific to them.

  Closes https://github.com/curl/curl/pull/12075

Jay Satiro (10 Oct 2023)

- libcurl-env-dbg.3: move debug variables from libcurl-env.3

  - Move documentation of libcurl environment variables used only in debug
    builds from libcurl-env into a separate document libcurl-env-dbg.

  - Document more debug environment variables.

  Previously undocumented or missing a description:

  CURL_ALTSVC_HTTP, CURL_DBG_SOCK_WBLOCK, CURL_DBG_SOCK_WPARTIAL,
  CURL_DBG_QUIC_WBLOCK, CURL_DEBUG, CURL_DEBUG_SIZE, CURL_GETHOSTNAME,
  CURL_HSTS_HTTP, CURL_FORCETIME, CURL_SMALLREQSEND, CURL_SMALLSENDS,
  CURL_TIME.

  Closes https://github.com/curl/curl/pull/11811

Dan Fandrich (9 Oct 2023)

- test670: increase the test timeout

  This should make it more immune to loaded servers.

  Ref: #11328

Stefan Eissing (9 Oct 2023)

- MQTT: improve receive of ACKs

  - add `mq->recvbuf` to provide buffering of incomplete
    ACK responses
  - continue ACK reading until sufficient bytes available
  - fixes test failures on low network receives

  Closes #12071

Viktor Szakats (9 Oct 2023)

- quic: fix BoringSSL build

  Add guard around `SSL_CTX_set_ciphersuites()` use.

  Bug: https://github.com/curl/curl/pull/12065#issuecomment-1752171885

  Follow-up to aa9a6a177017e4b74d33cdf85a3594900f4a7f81

  Co-authored-by: Jay Satiro
  Reviewed-by: Daniel Stenberg
  Closes #12067

Stefan Eissing (9 Oct 2023)

- test1540: improve reliability

  - print that bytes have been received on pausing, but not how many

  Closes #12069

- test2302: improve reliability

  - make result print collected write data, unless
    change in meta flags is detected
  - will show same result even when data arrives via
    several writecb invocations

  Closes #12068

Daniel Stenberg (9 Oct 2023)

- curl_easy_pause: set "in callback" true on exit if true

  Because it might have called another callback in the mean time that then
  set the bit FALSE on exit.

  Reported-by: Jay Satiro
  Fixes #12059
  Closes #12061

Viktor Szakats (8 Oct 2023)

- h3: add support for ngtcp2 with AWS-LC builds

  ```
  curl 8.4.0-DEV (x86_64-apple-darwin) libcurl/8.4.0-DEV (SecureTransport) AWS-
  LC/1.15.0 nghttp2/1.56.0 ngtcp2/0.19.1 nghttp3/0.15.0
  Release-Date: [unreleased]
  Protocols: dict file ftp ftps gopher gophers http https imap imaps ldap ldaps
   mqtt pop3 pop3s rtsp smb smbs smtp smtps telnet tftp ws wss
  Features: alt-svc AsynchDNS HSTS HTTP2 HTTP3 HTTPS-proxy IPv6 Largefile Multi
  SSL NTLM SSL threadsafe UnixSockets
  ```

  Also delete an obsolete GnuTLS TODO and update the header comment in
  `FindNGTCP2.cmake`.

  Reviewed-by: Daniel Stenberg
  Closes #12066

- build: do not publish `HAVE_BORINGSSL`, `HAVE_AWSLC` macros

  Syncing this up with CMake.

  Source code uses the built-in `OPENSSL_IS_AWSLC` and
  `OPENSSL_IS_BORINSSL` macros to detect BoringSSL and AWS-LC. No help is
  necessary from the build tools.

  The one use of `HAVE_BORINGSSL` in the source turned out to be no longer
  necessary for warning-free BoringSSL + Schannel builds. Ref: #1610 #2634

  autotools detects this anyway for display purposes.
  CMake detects this to decide whether to use the BoringSSL-specific
  crypto lib with ngtcp2. It detects AWS-LC, but doesn't use the detection
  result just yet (planned in #12066).

  Ref: #11964

  Reviewed-by: Daniel Stenberg
  Reviewed-by: Jay Satiro
  Closes #12065

Marc Hoersken (8 Oct 2023)

- CI: move distcheck job from Azure Pipelines to GitHub Actions

  This will allow for more trigger excludes within Azure Pipelines.

  Also fixes seemingly broken check with scripts/installcheck.sh.
  Ref: 190374c74ec4e5247d9066544c86e8d095e1d7b5

  Assisted-by: Philip Heiduck
  Closes #9532

Daniel Stenberg (8 Oct 2023)

- url: fall back to http/https proxy env-variable if ws/wss not set

  Reported-by: Craig Andrews
  Fixes #12031
  Closes #12058

Stefan Eissing (8 Oct 2023)

- cf-socket: simulate slow/blocked receives in debug

  add 2 env variables for non-UDP sockets:
  1. CURL_DBG_SOCK_RBLOCK: percentage of receive calls that randomly
     should return EAGAIN
  2. CURL_DBG_SOCK_RMAX: max amount of bytes read from socket

  Closes #12035

- http2: refused stream handling for retry

  - answer HTTP/2 streams refused via a GOAWAY from the server to
    respond with CURLE_RECV_ERROR in order to trigger a retry
    on another connection

  Reported-by: black-desk on github
  Ref #11859
  Closes #12054

Jay Satiro (8 Oct 2023)

- CURLOPT_DEBUGFUNCTION.3: warn about internal handles

  - Warn that the user's debug callback may be called with the handle
    parameter set to an internal handle.

  Without this warning the user may assume that the only handles their
  debug callback receives are the easy handles on which they set
  CURLOPT_DEBUGFUNCTION.

  This is a follow-up to f8cee8cc which changed DoH handles to inherit
  the debug callback function set in the user's easy handle. As a result
  those handles are now passed to the user's debug callback function.

  Closes https://github.com/curl/curl/pull/12034

- url: fix typo

Daniel Stenberg (8 Oct 2023)

- test458: verify --expand-output, expanding a file name accepting option

  Verifies the fix in #12055 (commit f2c8086ff15e6e995e1)

- tool_getparam: accept variable expansion on file names too

  Reported-by: PBudmark on github
  Fixes #12048
  Closes #12055

- RELEASE-NOTES: synced

- multi: do CURLM_CALL_MULTI_PERFORM at two more places

  ... when it does a state transition but there is no particular socket or
  timer activity. This was made apparent when commit b5bb84c removed a
  superfluous timer expiry.

  Reported-by: Dan Fandrich.
  Fixes #12033
  Closes #12056

Viktor Szakats (7 Oct 2023)

- GHA/linux: mbedtls 3.5.0 + minor dep bumps

  Closes #12057

Dan Fandrich (7 Oct 2023)

- CI: bump OpenLDAP package version on FreeBSD

  The old one is no longer available.

Marc Hoersken (7 Oct 2023)

- docs/libcurl/opts/Makefile.inc: add missing manpage files

  Detected with #9532

Dan Fandrich (7 Oct 2023)

- tests: fix a race condition in ftp server disconnect

  If a client disconnected and reconnected quickly, before the ftp server
  had a chance to respond, the protocol message/ack (ping/pong) sequence
  got out of sync, causing messages sent to the old client to be delivered
  to the new.  A disconnect must now be acknowledged and intermediate
  requests thrown out until it is, which ensures that such synchronization
  problems can't occur. This problem could affect ftp, pop3, imap and smtp
  tests.

  Fixes #12002
  Closes #12049

Viktor Szakats (7 Oct 2023)

- appveyor: bump mingw-w64 job to gcc 13 (was: 8)

  This sets gcc 6, 7, 9, 13 in our test mix (was: 6, 7, 8, 9).
  Adding a modern gcc version to the tests.

  (The gcc 8 job used to take around 50 minutes. The new image with gcc 13
  finished in 32, 35, 34 minutes in the 3 test runs so far.)

  It also adds a modern CMake version and OS env to our mingw-w64 builds.

  Closes #12051

David Benjamin (6 Oct 2023)

- openssl: use X509_ALGOR_get0 instead of reaching into X509_ALGOR

  While the struct is still public in OpenSSL, there is a (somewhat
  inconvenient) accessor. Use it to remain compatible if it becomes opaque
  in the future.

  Closes #12038

Daniel Stenberg (6 Oct 2023)

- curl_easy_pause.3: mention it works within callbacks

  Reported-by: Maxim Dzhura
  Bug: https://curl.se/mail/lib-2023-10/0010.html
  Closes #12046

- curl_easy_pause.3: mention h2/h3 buffering

  Asked-by: Maxim Dzhura
  Ref: https://curl.se/mail/lib-2023-10/0011.html

  Closes #12045

Viktor Szakats (6 Oct 2023)

- cmake: re-add missed C89 headers for specific detections

  We removed C89 `setjmp.h` and `signal.h` detections and excluded them
  from the global header list we use when detecting functions [1]. Then
  missed to re-add these headers to the specific functions which need
  them to be detected [2]. Fix this omission in this patch.

  [1] Follow-up to 3795fcde995d96db641ddbcc8a04f9f0f03bef9f #11951
  [2] Follow-up to 96c29900bcec32dd6bc8e9857c8871ff4b8b8ed9 #11940

  Closes #12043

Daniel Stenberg (6 Oct 2023)

- multi: set CURLM_CALL_MULTI_PERFORM after switch to DOING_MORE

  Since there is nothing to wait for there. Avoids the test 1233 hang
  reported in #12033.

  Reported-by: Dan Fandrich
  Closes #12042

Dan Fandrich (5 Oct 2023)

- test1903: actually verify the cookies after the test

  The test otherwise could do just about anything (except leak memory in
  debug mode) and its bad behaviour wouldn't be detected. Now, check the
  resulting cookie file to ensure the cookies are still there.

  Closes #12041

- test: add missing <feature>s

  The tests will otherwise fail if curl has them disabled.

- test1906: set a lower timeout since it's hit on Windows

  msys2 builds actually hit the connect timeout in normal operation, so
  lower the timeout from 5 minutes to 5 seconds to reduce test time.

  Ref: #11328
  Closes #12036

Daniel Stenberg (5 Oct 2023)

- RELEASE-NOTES: synced

Jay Satiro (5 Oct 2023)

- idn: fix WinIDN null ptr deref on bad host

  - Return CURLE_URL_MALFORMAT if IDN hostname cannot be converted from
    UTF-8 to UTF-16.

  Prior to this change a failed conversion erroneously returned CURLE_OK
  which meant 'decoded' pointer (what would normally point to the
  punycode) would not be written to, remain NULL and be dereferenced
  causing an access violation.

  Closes https://github.com/curl/curl/pull/11983

Dan Fandrich (4 Oct 2023)

- tests: close the shell used to start sshd

  This shell isn't needed once sshd starts, so use "exec" so it doesn't
  stick around.

  Closes #12032

Daniel Stenberg (4 Oct 2023)

- base64: also build for curl

  Since the tool itself now uses the base64 code using the curlx way, it
  needs to build also when the tool needs it. Starting now, the tool build
  defines BULDING_CURL to allow lib-side code to use it.

  Follow-up to 2e160c9c6525

  Closes #12010

Eduard Strehlau (4 Oct 2023)

- tests: Fix zombie processes left behind by FTP tests.

  ftpserver.pl correctly cleans up spawned server processes,
  but forgets to wait for the shell used to spawn them.
  This is barely noticeable during a normal testrun,
  but causes process exhaustion and test failure
  during a complete torture run of the FTP tests.

  Fixes #12018
  Closes #12020

Dan Fandrich (4 Oct 2023)

- github/labeler: improve labeler matches

- test574: add a timeout to the test

  This one hangs occasionally, so this will speed up a test run and allow
  logs to be seen when it does.

  Closes #12025

- tests: propagate errors in libtests

  Use the test macros to automatically propagate some errors, and check
  and log others while running the tests. This can help in debugging
  exactly why a test has failed.

- tests: set --expect100-timeout to improve test reliability

  On an overloaded server, the default 1 second timeout can go by without
  the test server having a chance to respond with the expected headers,
  causing tests to fail. Increase the 1 second timeout to 99 seconds so
  this failure mode is no longer a problem on test 1129. Some other tests
  already set a high value, but make them consistently 99 seconds so if
  something goes wrong the test is stalled for less time.

  Ref: #11328

- CI: ignore the "flaky" and "timing-dependent" test results in CMake

  This was already done for automake builds but CMake builds were missed.
  Test 1086 actually causes the test harness to crash with:

  Warning: unable to close filehandle DWRITE properly: Broken pipe at C:/projec
  ts/curl/tests/ftpserver.pl line 527

  Rather than fix it now, this change leaves test 1086 entirely skipped on
  those builds that show this problem.

  Follow-up to 589dca761

  Ref: #11865

Viktor Szakats (4 Oct 2023)

- cmake: improve OpenLDAP builds

  - cmake: detect OpenLDAP based on function `ldap_init_fd`.
    autotools does this. autotools also publishes this detection result
    in `HAVE_LDAP_INIT_FD`. We don't mimic that with CMake as the source
    doesn't use this value. (it might need to be remove-listed in
    `scripts/cmp-config.pl` for future OpenLDAP test builds.)
    This also deletes existing self-declaration method via the
    CMake-specific `CURL_USE_OPENLDAP` configuration.

  - cmake: define `LDAP_DEPRECATED=1` for OpenLDAP.
    Like autotools does. This fixes a long list of these warnings:
    ```
    /usr/local/opt/openldap/include/ldap.h:1049:5: warning: 'LDAP_DEPRECATED' i
  s not defined, evaluates to 0 [-Wundef]
    ```

  - cmake: delete LDAP TODO comment no longer relevant.

  Also:

  - autotools: replace domain name `dummy` with `0.0.0.0` in LDAP feature
    detection functions.

  Ref: #11964 (effort to sync cmake detections with autotools)

  Closes #12024

- cmake: fix unity builds for more build combinations

  By using unique static function/variable names in source files
  implementing these interfaces.

  - OpenLDAP combined with any SSH backend.

  - MultiSSL with mbedTLS, OpenSSL, wolfSSL, SecureTransport.

  Closes #12027

Daniel Stenberg (4 Oct 2023)

- tests: remove leading spaces from some tags

  The threee tags `<name>`, `</name>` and `<command>` were frequently used
  with a leading space that this removes. The reason this habbit is so
  widespread in testcases is probably that they have been copy and pasted.

  Hence, fixing them all now might curb this practice from now on.

  Closes #12028

Viktor Szakats (4 Oct 2023)

- GHA: bump actions/checkout

  Follow-up to 2e0fa50fc16b9339f51e0a7bfff0352829323acb #11964
  Follow-up to c39585d9b7ef3cbfc1380812dec60e7b275b6af3 #12000

  Closes #12023

- spelling: fix codespell 2.2.6 typos

  Closes #12019

Daniel Stenberg (3 Oct 2023)

- GHA: add workflow to compare configure vs cmake outputs

  Uses scripts/cmp-config.pl two compare two curl_config.h files,
  presumbly generated with configure and cmake. It displays the
  differences and filters out a lot of known lines we ignore.

  The script also shows the matches that were *not* used. Possibly
  subjects for removal.

  Closes #11964

- appveyor: enable test 571

  Follow-up from 8a940fd55c175f7 / #12013

  Closes #12017

Viktor Szakats (3 Oct 2023)

- build: alpha-sort source files for lib and src

  Closes #12014

- cmake: delete old `HAVE_LDAP_URL_PARSE` logic

  Left there by accident after adding proper detection for this.

  Follow-up to 772f0d8edf1c3c2745543f42388ccec5a16ee2c0 #12006

  Ref: #11964 (effort to sync cmake detections with autotools)

  Closes #12015

Stefan Eissing (3 Oct 2023)

- tests: increase lib571 timeout from 3s to 30s

  - 3s is too short for our CI, making this test fail occasionally
  - test usually experiences no delay run locally, so 30s wont hurt

  Closes #12013

Viktor Szakats (3 Oct 2023)

- cmake: fix unity with Windows Unicode + TrackMemory

  Found the root cause of the startup crash in unity builds with Unicode
  and TrackMemory enabled at the same time.

  We must make sure that the `memdebug.h` header doesn't apply to
  `lib/curl_multibyte.c` (as even noted in a comment there.) In unity
  builds all headers apply to all sources, including `curl_multibyte.c`.
  This probably resulted in an infinite loop on startup.

  Exclude this source from unity compilation with TrackMemory enabled,
  in both libcurl and curl tool. Enable unity mode for a debug Unicode
  CI job to keep it tested. Also delete the earlier workaround that
  fully disabled unity for affected builds.

  Follow-up to d82b080f6374433ce7c98241329189ad2d3976f8 #12005
  Follow-up to 3f8fc25720900b14b7432f4bd93407ca15311719 #11095

  Closes #11928

- cmake: disable unity mode with Windows Unicode + TrackMemory

  "TrackMemory" is `ENABLE_DEBUG=ON` (aka `ENABLE_CURLDEBUG=ON`,
  aka `-DCURLDEBUG`).

  There is an issue with memory tracking and Unicode when built in "unity"
  mode, which results in the curl tool crashing right on startup, even
  without any command-line option. Interestingly this doesn't happen under
  WINE (at least on the system I tested this on), but consistenly happens
  on real Windows machines. Crash is 0xC0000374 heap corruption. Both
  shared and static curl executables are affected.

  This limitation probably won't hit too many people, but it remains
  a TODO to find and fix the root cause and drop this workaround.

  Example builds and runs:
  https://ci.appveyor.com/project/curlorg/curl/builds/48169111/job/17cptxhtpubd
  7iwj#L313 (static)
  https://ci.appveyor.com/project/curlorg/curl/builds/48169111/job/76e1ge758tby
  qu9c#L317 (shared)

  Follow-up to 3f8fc25720900b14b7432f4bd93407ca15311719 #11095

  Ref: #11928
  Closes #12005

- cmake: tidy-up `NOT_NEED_LBER_H` detection

  Follow-up to 772f0d8edf1c3c2745543f42388ccec5a16ee2c0 #12006

- appveyor: rewrite batch in PowerShell + CI improvements

  1. Rewrite in PowerShell:

  - rewrite MS-DOS batch build script in PowerShell.
  - move some bash operations into native PowerShell.
  - fixups for PowerShell insisting on failure when a command outputs
    something to stderr.
  - fix to actually run `curl -V` after every build.
    (and exclude ARM64 builds.)
  - also say why we skipped `curl -V` if we had to skip.
  - fix CMake warnings about unused configuration variables, by adapting
    these dynamically for build cases.
  - dedupe OpenSSL path into a variable.
  - disable `test1451` failing with a warning anyway due to missing python
    impacket. (after trying and failing to install impacket)
    PowerShell promotes these warnings to errors by PowerShell. We can also
    suppress they wholesale if they start causing issues in the future,
    like we already to with `autoreconf` and `./configure`.

  PowerShell is better than MS-DOS batches, so the hope is this makes it
  easier to extend and maintain the AppVeyor build logic. POSIX/bash isn't
  supported inline by AppVeyor on Windows build machines, but we are okay
  to keep it in an external script, so it's also an option.

  2. CI improvements:

  - enable tests for a "unity" build job.
  - speed-up CI initialization by using shallow clones of the curl repo.
  - speed-up CMake MSVC jobs with `TrackFileAccess=false`.
  - enable parallelism in `VisualStudioSolution` builds.
  - display CMake version before builds.
  - always show the CPU in job names.
  - tell which jobs are build-only in job names.
  - move `TESTING:` value next to `DISABLED_TESTS:` in two jobs.
  - add `config.log` (autotools) to dumped logs (need to enable manually).

  3. Style:

  - use single-quotes in YAML like we do in other CI YAML files.
    It also allows to drop quoting characters and lighter to write/read.
    (keep double quotes for PowerShell strings needing expansion.)

  Closes #11999

- cmake: fix `HAVE_LDAP_SSL`, `HAVE_LDAP_URL_PARSE` on non-Windows

  - set `HAVE_LDAP_URL_PARSE` if `ldap_url_parse` function exists.
    Before this patch we set it based it on the presence of `stricmp`,
    which correctly enabled it on e.g. Windows, but was inaccurate for
    other platforms.

  - always set `HAVE_LDAP_SSL` if an LDAP backend is detected and
    LDAPS is not explicitly disabled. This mimics autotools behaviour.
    Previously we set it only for Windows LDAP. After this fix, LDAPS is
    correctly enabled in default macOS builds.

  - enable LDAP[S] for a CMake macOS CI job. Target OS X 10.9 (Mavericks)
    to avoid deprecation warnings for LDAP API.

  - always detect `HAVE_LDAP_SSL_H`, even with LDAPS explicitly disabled.
    This doesn't make much sense, but let's do it to sync behaviour with
    autotools.

  - fix benign typo in variable name.

  Ref: #11964 (effort to sync cmake detections with autotools)

  Closes #12006

- autotools: restore `HAVE_IOCTL_*` detections

  This restores `CURL_CHECK_FUNC_IOCTL` detection. I deleted it in
  4d73854462f30948acab12984b611e9e33ee41e6 and
  c3456652a0c72d1845d08df9769667db7e159949 (2022-08), because the
  `HAVE_IOCTL` result it generated was unused in the source. But,
  I did miss the fact that this had two dependent checks:
  `CURL_CHECK_FUNC_IOCTL_FIONBIO`,
  `CURL_CHECK_FUNC_IOCTL_SIOCGIFADDR` that we do actually need:
  `HAVE_IOCTL_FIONBIO`, `HAVE_IOCTL_SIOCGIFADDR`.

  Regression from 4d73854462f30948acab12984b611e9e33ee41e6

  Ref: #11964 (effort to sync cmake detections with autotools)

  Closes #12008

Daniel Stenberg (2 Oct 2023)

- RELEASE-PROCEDURE.md: updated coming release dates

- RELEASE-NOTES: synced

Viktor Szakats (1 Oct 2023)

- cmake: pre-cache `HAVE_POLL_FINE` on Windows

  Windows doesn't support `poll()`, so we can safely skip checking for
  fine poll.

  Closes #12003

- gha: bump actions to latest versions

  - actions@checkout@v4 (from v3 and v2)

  - fsfe/reuse-action@v2 (from v1)

  Closes #12000

Stefan Eissing (30 Sep 2023)

- h2: testcase and fix for pausing h2 streams

  - refs #11982 where it was noted that paused transfers may
    close successfully without delivering the complete data
  - made sample poc into tests/http/client/h2-pausing.c and
    added test_02_27 to reproduce

  Closes #11989
  Fixes #11982
  Reported-by: Harry Sintonen

Viktor Szakats (30 Sep 2023)

- cmake: validate `CURL_DEFAULT_SSL_BACKEND` config value

  Before this patch CMake builds accepted any value and it was used at
  runtime as-is. This patch make sure that the selected default backend
  is also enabled in the build. It also enforces a full lowercase value.

  This improves reproducibility and brings CMake in sync with autotools
  which already worked like described above.

  Follow-up to 26c7feb8b9d51a57fab3325571b4bbfa03b11af0 #11774

  Closes #11998

- autotools: adjust `CURL_CA_PATH` value to CMake

  autotools was using the same value as CMake, but with an ending
  slash. Delete the ending slash to match configurations.

  Ref: #11964 (effort to sync cmake detections with autotools)

  Closes #11997

- cmake: detect `sys/wait.h` and `netinet/udp.h`

  Ref: #11964 (effort to sync cmake detections with autotools)

  Closes #11996

Daniel Stenberg (30 Sep 2023)

- lib: provide and use Curl_hexencode

  Generates a lower case ASCII hex output from a binary input.

  Closes #11990

- configure: check for the capath by default

  ... if the chosen TLS backend supports it: OpenSSL, GnuTLS, mbedTLS or wolfSS
  L

  cmake: synced

  Assisted-by: Viktor Szakats
  Closes #11987

- wolfssl: ignore errors in CA path

  The default wolfSSL_CTX_load_verify_locations() function is quite picky
  with the certificates it loads and will for example return error if just
  one of the certs has expired.

  With the *_ex() function and its WOLFSSL_LOAD_FLAG_IGNORE_ERR flag, it
  behaves more similar to what OpenSSL does by default.

  Even the set of default certs on my Debian unstable has several expired
  ones.

  Assisted-by: Juliusz Sosinowicz
  Assisted-by: Michael Osipov

  Closes #11987

- create-dirs.d: clarify it also uses --output-dirs

  Reported-by: Robert Simpson
  Fixes #11991
  Closes #11995

Viktor Szakats (30 Sep 2023)

- appveyor: fix yamlint issues, indent

  Also:
  - use double quotes in all batch if statements.

  Closes #11994

- cmake: detect `HAVE_CLOCK_GETTIME_MONOTONIC_RAW`

  Based on existing autotools logic.

  Ref: #11964 (effort to sync cmake detections with autotools)

  Closes #11981

- cmake: detect `HAVE_GETADDRINFO_THREADSAFE`

  Based on existing autotools logic.

  autotools checks for old versions of the allowlisted target OSes and
  disables this feature when seeing them. In CMake we assume we're running
  on newer systems and enable regardless of OS version.

  autotools always runs all 3 probes for non-fast-tracked systems and
  enables this feature if any one of them was successful. To save
  configuration time,  CMake stops at the first successful check.

  OpenBSD is not fast-tracked and then gets blocklisted as a generic BSD
  system. I haven't double-checked if this is correct, but looks odd.

  Ref: #11964 (effort to sync cmake detections with autotools)

  Closes #11979

- cmake: fix `HAVE_WRITABLE_ARGV` detection

  Move detection before the creation of detection results in
  `curl_config.h`.

  Ref: #11964 (effort to sync cmake detections with autotools)

  Closes #11978

- appveyor: minor improvements

  - run `curl -V` after builds to see if they run and with what features.
    Except for one job where a CRT DLL is missing. And ARM64 which should
    fail, but is silently not launched instead.

  - copy libcurl DLL next to curl tool and tests binaries in shared mode.
    This makes it possible to run the tests. (We don't run tests after
    these builds yet.)

  - list the DLLs and EXEs present after the builds.

  - add `DEBUG` variable for CMake builds to allow disabling it, for
    testing non-debug builds. (currently enabled for all)

  - add commented lines that dump CMake configuration logs for debugging
    build/auto-detection issues.

  - add gcc version to jobs where missing.

  - switch a job to the native MSYS2 mingw-w64 toolchain. This adds gcc 9
    to the build mix.

  - make `SHARED=OFF` and `OPENSSL=OFF` defaults global.

  - delete a duplicate backslash.

  Closes #11976

- configure: replace adhoc domain with `localhost` in tests

  Reviewed-by: Daniel Stenberg
  Closes #11988

- tidy-up: use more example domains

  Also make use of the example TLD:
  https://en.wikipedia.org/wiki/.example

  Reviewed-by: Daniel Stenberg
  Closes #11992

Dan Fandrich (29 Sep 2023)

- runtests: display the test status if tests appear hung

  It sometimes happens that a test hangs during a test run and never
  returns. The test harness will wait indefinitely for the results and on
  CI servers the CI job will eventually be killed after an hour or two.
  At the end of a test run, if results haven't come in within a couple of
  minutes, display the status of all test runners and what tests they're
  running to help in debugging the problem.

  This feature is really only kick in with parallel testing enabled, which
  is fine because without parallel testing it's usually easy to tell what
  test has hung.

  Closes #11980

- github/labeler: remove workaround for labeler

  This was added due to what seemed to be a bug regarding the sync-labels:
  config option, but it looks like it wasn't necessary.

  Follow-up to b2b0534e7

Viktor Szakats (29 Sep 2023)

- docs: upgrade an URL to HTTPS in `BINDINGS.md` [ci skip]

Daniel Stenberg (29 Sep 2023)

- docs: replace made up domains with example.com

  in FAQ and MANUAL.md

  - example.com was made for this purpose.

  - reduces the risk that one of those domains suddenly start hosting
    something nasty and we provide links to them

  Closes #11986

Michael Osipov (29 Sep 2023)

- acinclude.m4: Document proper system truststore on FreeBSD

  The default system truststore on FreeBSD has been /etc/ssl/certs for many
  years now. It is managed canonically through certctl(8) and contains hashed
  symlinks for OpenSSL and other TLS providers.
  The previous ones require security/ca_root_nss which might not be installed o
  r
  will not contain any custom CA certificates.

  Closes #11985

Daniel Stenberg (29 Sep 2023)

- FAQ: How do I upgrade curl.exe in Windows?

  This is a growing question, better answer it here to get somewhere to
  point users to.

  Closes #11984

Viktor Szakats (28 Sep 2023)

- cmake: pre-cache `HAVE_BASENAME` for mingw-w64 and MSVC

  `basename` is present in mingw-w64, missing from MSVC. Pre-cache
  accordingly to make configure faster.

  Notice that `basename` has a bug so we later disable it even with
  mingw-w64:
  https://github.com/curl/curl/blob/781242ffa44a9f9b95b6da5ac5a1bf6372ec6257/li
  b/curl_setup.h#L820-L825

  Closes #11974

Daniel Stenberg (28 Sep 2023)

- cmake: add missing checks

  - check for arc4random. To make rand.c use it accordingly.
  - check for fcntl
  - fix fseek detection
  - add SIZEOF_CURL_SOCKET_T
  - fix USE_UNIX_SOCKETS
  - define HAVE_SNPRINTF to 1
  - check for fnmatch
  - check for sched_yield
  - remove HAVE_GETPPID duplicate from curl_config.h
  - add HAVE_SENDMSG

  Ref: #11964

  Co-authored-by: Viktor Szakats
  Closes #11973

- configure: remove unused checks

  - for sys/uio.h
  - for fork
  - for connect

  Ref: #11964

  Closes #11973

- lib: remove TIME_WITH_SYS_TIME

  It is not used in any code anywhere.

  Ref: #11964
  Closes #11975

- docs: update curl man page references

  Detected by the manpage-syntax update

  Closes #11963

- manpage-syntax: verify curl man page references

  1. References to curl symbols are now checked that they indeed exist as
     man pages. This for \f references as well as the names referenced in the
     SEE ALSO section.

     Allowlist curl.1 since it is not always built in builds

  2. References to curl symbols that lack section now causes warning, since tha
  t
     will prevent them from getting linked properly

  3. Check for "bare" references to curl functions and warn, they should be
     references

  Closes #11963

- cmake: add check for suseconds_t

  And fix the HAVE_LONGLONG define

  Ref: #11964
  Closes #11977

Viktor Szakats (28 Sep 2023)

- tidy-up: whitespace fixes

  Closes #11972

- cmake: detect TLS-SRP in OpenSSL/wolfSSL/GnuTLS

  With new option `CURL_DISABLE_SRP=ON` to force-disable it.
  To match existing option and detection logic in autotools.

  Also:
  - fix detecting GnuTLS.
    We assume `nettle` as a GnuTLS dependency.
  - add CMake GnuTLS CI job.
  - bump AppVeyor CMake OpenSSL MSVC job to OpenSSL 1.1.1 (from 1.0.2)
    TLS-SRP fails to detect with 1.0.2 due to an OpenSSL header bug.
  - fix compiler warning when building with GnuTLS and disabled TLS-SRP.
  - fix comment typos, whitespace.

  Ref: #11964

  Closes #11967

- tool: use our own stderr variable

  Earlier this year we changed our own stderr variable to use the standard
  name `stderr` (to avoid bugs where someone is using `stderr` instead of
  the curl-tool specific variable). This solution needed to override the
  standard `stderr` symbol via the preprocessor. This in turn didn't play
  well with unity builds and caused curl tool to crash or stay silent due
  to an uninitialized stderr. This was a hard to find issue, fixed by
  manually breaking out one file from the unity sources.

  To avoid two these two tricks, this patch implements a different
  solution: Restore using our own local variable for our stderr output and
  leave `stderr` as-is. To avoid using `stderr` by mistake, add a
  `checksrc` rule (based on logic we already used in lib for `strerror`)
  that detects any `stderr` use in `src` and points to using our own
  variable instead: `tool_stderr`.

  Follow-up to 06133d3e9b8aeb9e9ca0b3370c246bdfbfc8619e
  Follow-up to 2f17a9b654121dd1ecf4fc043c6d08a9da3522db

  Closes #11958

Loïc Yhuel (28 Sep 2023)

- connect: only start the happy eyeballs timer when needed

  The timeout is only used when there is a second address family, for the
  delayed eyeballer.

  Closes #11939

Daniel Stenberg (28 Sep 2023)

- tool_operate: free 'gateway' correctly

  Pointed out by Coverity. The fix in 93885cf3a8d4e was incomplete.

  Also removed repeated wording in IPFS related error messages.

  Closes #11969

Stefan Eissing (28 Sep 2023)

- lib: move handling of `data->req.writer_stack` into Curl_client_write()

  - move definitions from content_encoding.h to sendf.h
  - move create/cleanup/add code into sendf.c
  - installed content_encoding writers will always be called
    on Curl_client_write(CLIENTWRITE_BODY)
  - Curl_client_cleanup() frees writers and tempbuffers from
    paused transfers, irregardless of protocol

  Closes #11908

Loïc Yhuel (28 Sep 2023)

- multi: round the timeout up to prevent early wakeups

  Curl_timediff rounds down to the millisecond, so curl_multi_perform can
  be called too early, then we get a timeout of 0 and call it again.

  The code already handled the case of timeouts which expired less than
  1ms in the future.  By rounding up, we make sure we will never ask the
  platform to wake up too early.

  Closes #11938

Daniel Stenberg (28 Sep 2023)

- RELEASE-NOTES: spell out that IPFS is via gateway

- RELEASE-NOTES: synced

- tool_operate: avoid strlen() -1 on zero length content from file

  Follow-up to 65b563a96a226649ba12cb1e

  Closes #11959

- tool_operate: fix memory mixups

  Switch to plain getenv() from curl_getenv() to avoid the allocation and
  having to keep track of which free() or curl_free() that need to be
  used.

  Coverity found issues and a memory leak.

  Follow-up to 65b563a96a226649ba12cb1e

  Closes #11959

Viktor Szakats (27 Sep 2023)

- curl-functions.m4: fixup recent bad edits

  Follow-up to 96c29900bcec32dd6bc8e9857c8871ff4b8b8ed9 #11940

  Closes #11966

Daniel Stenberg (27 Sep 2023)

- curl-functions.m4: fix include line

  This made the getaddrinfo detection fail, but we did not spot it in the
  CI because it graciously falled back to using legacy functions instead!

  Follow-up to 96c29900bcec (#11940)

  Closes #11965

- inet_ntop: add typecast to silence Coverity

  CID 1024653:  Integer handling issues  (SIGN_EXTENSION)

  Suspicious implicit sign extension: "src[i]" with type "unsigned char
  const" (8 bits, unsigned) is promoted in "src[i] << (1 - i % 2 << 3)" to
  type "int" (32 bits, signed), then sign-extended to type "unsigned long"
  (64 bits, unsigned).  If "src[i] << (1 - i % 2 << 3)" is greater than
  0x7FFFFFFF, the upper bits of the result will all be 1.

  111         words[i/2] |= (src[i] << ((1 - (i % 2)) << 3));

  The value will not be greater than 0x7FFFFFFF so this still cannot
  happen.

  Also, switch to ints here instead of longs. The values stored are 16 bit
  so at least no need to use 64 bit variables. Also, longs are 32 bit on
  some platforms so this logic still needs to work with 32 bits.

  Closes #11960

- docs: adapt SEE ALSO sections to new requirements

  To please manpage-syntax.pl used by test 1173

  Closes #11957

- manpage-syntax.pl: verify SEE ALSO syntax

  - Enforce a single reference per .BR line
  - Skip the quotes around the section number for example (3)
  - Insist on trailing commas on all lines except the last
  - Error on comma on the last SEE ALSO entry

  - List the entries alpha-sorted, not enforced just recommended

  Closes #11957

- connect: expire the timeout when trying next

  ... so that it gets called again immediately and can continue trying
  addresses to connect to. Otherwise it might unnecessarily wait for a
  while there.

  Fixes #11920
  Reported-by: Loïc Yhuel
  Closes #11935

- http: remove wrong comment for http_should_fail

  Reported-by: Christian Schmitz
  Ref: #11936
  Closes #11941

Dan Fandrich (26 Sep 2023)

- tool_setopt: remove unused function tool_setopt_flags

  This function is identical to tool_setopt_bitmask except that it treats
  the argument as unsigned.

  Closes #11943

Viktor Szakats (26 Sep 2023)

- cmake: add feature checks for `memrchr` and `getifaddrs`

  - `HAVE_MEMRCHR` for `memrchr`.
  - `HAVE_GETIFADDRS` for `getifaddrs`.
    This was present in `lib/curl_config.h.cmake` but missed the detection
    logic.

  To match existing autotools feature checks.

  Closes #11954

- cmake: move global headers to specific checks

  Before this patch we added standard headers unconditionally to the
  global list of headers used for feature checks. This is unnecessary
  and also doesn't help CMake 'Generate' performance. This patch moves
  these headers to each feature check where they are actually needed.
  Stop using `stddef.h`, as it seems unnecessary.

  I've used autotools' `m4/curl-functions.m4` to figure out these
  dependencies.

  Also delete checking for the C89 standard header `time.h`, that I
  missed in the earlier commit.

  Ref: 96c29900bcec32dd6bc8e9857c8871ff4b8b8ed9 #11940

  Closes #11951

- src/mkhelp: make generated code pass `checksrc`

  Closes #11955

- tests: show which curl tool `runtests.pl` is using

  To help debugging when there is issue finding or running it.

  Closes #11953

- CI/azure: make `MAKEFLAGS` global to parallelize all jobs

  https://dev.azure.com/daniel0244/curl/_build/results?buildId=17528 (before)
  https://dev.azure.com/daniel0244/curl/_build/results?buildId=17545 (after, wi
  th -j3)

  Closes #11952

- CI/azure: migrate old mingw MSYS1 jobs to MSYS2

  Also delete an accidental variable reference.

  Follow-up to 38029101e2d78ba125732b3bab6ec267b80a0e72

  Closes #11945

Daniel Stenberg (26 Sep 2023)

- docs: add see also curl_multi_get_handles to some man pages

  Assisted-by: Jay Satiro

  Closes #11942

Viktor Szakats (26 Sep 2023)

- cmake: assume `_fseeki64` and no `fseeko` on Windows

  `_fseeki64` is present in mingw-w64 1.0 (2011-09-26) headers, and
  at least Watcom C 1.9 (2010) headers and MSVS 2008 [1].

  `fseeko` is not present in any of these.

  (mingw-w64 1.0 also offers `fseeko64`.)

  [1] https://github.com/curl/curl/pull/11944#issuecomment-1734995004

  Follow-up to 9c7165e96a3a9a2d0b7059c87c699b5ca8cdae93 #11918

  Closes #11950

- build: delete checks for C89 standard headers

  Delete checks and guards for standard C89 headers and assume these are
  available: `stdio.h`, `string.h`, `time.h`, `setjmp.h`, `stdlib.h`,
  `stddef.h`, `signal.h`.

  Some of these we already used unconditionally, some others we only used
  for feature checks.

  Follow-up to 9c7165e96a3a9a2d0b7059c87c699b5ca8cdae93 #11918 (for `stdio.h` i
  n CMake)

  Closes #11940

Stefan Eissing (26 Sep 2023)

- multiif.h: remove Curl_multi_dump declaration

  Follow-up to d850eea2 which removed the Curl_multi_dump definition.

  Closes https://github.com/curl/curl/pull/11946

Jay Satiro (26 Sep 2023)

- config-win32: define HAVE__FSEEKI64

  Follow-up to 9c7165e9 which added an fseeko wrapper to the lib that
  calls _fseeki64 if it is available.

  Closes https://github.com/curl/curl/pull/11944

- docs: explain how PINNEDPUBLICKEY is independent of VERIFYPEER

  - Explain that peer verification via CURLOPT_PINNEDPUBLICKEY takes place
    even if peer verification via CURLOPT_SSL_VERIFYPEER is turned off.

  The behavior is verified by test2048.

  Bug: https://github.com/curl/curl/issues/2935#issuecomment-418371872
  Reported-by: claudiusaiz@users.noreply.github.com

  Bug: https://github.com/curl/curl/discussions/11910
  Reported-by: Hakan Sunay Halil

  Closes https://github.com/curl/curl/pull/11930

Stefan Eissing (26 Sep 2023)

- openssl: improve ssl shutdown handling

  - If SSL shutdown is not finished then make an additional call to
    SSL_read to gather additional tracing.

  - Fix http2 and h2-proxy filters to forward do_close() calls to the next
    filter.

  For example h2 and SSL shutdown before and after this change:

  Before:

  Curl_conn_close -> cf_hc_close -> Curl_conn_cf_discard_chain ->
  ssl_cf_destroy

  After:

  Curl_conn_close -> cf_hc_close -> cf_h2_close -> cf_setup_close ->
  ssl_cf_close

  Note that currently the tracing does not show output on the connection
  closure handle. Refer to discussion in #11878.

  Ref: https://github.com/curl/curl/discussions/11878

  Closes https://github.com/curl/curl/pull/11858

Loïc Yhuel (26 Sep 2023)

- multi: fix small timeouts

  Since Curl_timediff rounds down to the millisecond, timeouts which
  expire in less than 1ms are considered as outdated and removed from the
  list. We can use Curl_timediff_us instead, big timeouts could saturate
  but this is not an issue.

  Closes #11937

Viktor Szakats (25 Sep 2023)

- cmake: fix stderr initialization in unity builds

  Before this patch, in certain build configurations the curl tool may
  not have displayed anything (debug, macOS), or crashed at startup
  (debug, Windows).

  Follow-up to 3f8fc25720900b14b7432f4bd93407ca15311719
  Necessary after 2f17a9b654121dd1ecf4fc043c6d08a9da3522db

  Closes #11929

- cmake: fix missing `zlib.h` when compiling `libcurltool`

  Came up while testing debug/testing build for Windows. I'm not sure why
  it didn't come up in earlier tests with similar config.
  `tool_hugehelp.c` might indeed require `zlib.h` and without linking
  `CURL_LIBS` to the `curltool` target, CMake doesn't seem to add detected
  dependency headers to the compiler command.

  ```
  [ 25%] Building C object src/CMakeFiles/curltool.dir/tool_hugehelp.c.obj
  cd .../curl/bld-cmake-llvm-x64/src && /usr/local/opt/llvm/bin/clang
    --target=x86_64-w64-mingw32 --sysroot=/usr/local/opt/mingw-w64/toolchain-x8
  6_64
    -DCURLDEBUG -DCURL_STATICLIB -DHAVE_CONFIG_H -DUNICODE -DUNITTESTS -D_UNICO
  DE
    -I.../curl/include -I.../curl/lib -I.../curl/bld-cmake-llvm-x64/lib
    -I.../curl/bld-cmake-llvm-x64/include -I.../curl/src -Wno-unused-command-li
  ne-argument
    -D_UCRT -DDEBUGBUILD -DHAS_ALPN -DUSE_MANUAL=1  -fuse-ld=lld -Wl,-s -static
  -libgcc
    -lucrt [...] -O3 -DNDEBUG -municode -MD
    -MT src/CMakeFiles/curltool.dir/tool_hugehelp.c.obj
    -MF CMakeFiles/curltool.dir/tool_hugehelp.c.obj.d
    -o CMakeFiles/curltool.dir/tool_hugehelp.c.obj -c .../curl/bld-cmake-llvm-x
  64/src/tool_hugehelp.c
  .../curl/bld-cmake-llvm-x64/src/tool_hugehelp.c:6:10: fatal error: 'zlib.h' f
  ile not found
      6 | #include <zlib.h>
        |          ^~~~~~~~
  ```

  Follow-up to 39e7c22bb459c2e818f079984989a26a09741860

  Closes #11927

- cmake: fix duplicate symbols when linking tests

  The linker resolves this automatically in non-unity builds. In unity
  builds the linker cannot drop a single object with the duplicates,
  resulting in these errors. The root issue is that we started including
  certain objects both via both libcurlu and libcurltool libs.

  Regression from 39e7c22bb459c2e818f079984989a26a09741860

  Windows errors:
  ```
  [  3%] Linking C executable unit1303.exe
  [  3%] Building C object tests/server/CMakeFiles/rtspd.dir/__/__/lib/curl_mul
  tibyte.c.obj
  ../../lib/libcurlu-d.a(unity_0.c.obj): In function `curlx_convert_UTF8_to_wch
  ar':
  C:/projects/curl/lib/curl_multibyte.c:44: multiple definition of `curlx_conve
  rt_UTF8_to_wchar'
  ../../src/libcurltool-d.a(unity_0.c.obj):C:/projects/curl/lib/curl_multibyte.
  c:44: first defined here
  ../../lib/libcurlu-d.a(unity_0.c.obj): In function `curlx_convert_wchar_to_UT
  F8':
  C:/projects/curl/lib/curl_multibyte.c:66: multiple definition of `curlx_conve
  rt_wchar_to_UTF8'
  ../../src/libcurltool-d.a(unity_0.c.obj):C:/projects/curl/lib/curl_multibyte.
  c:66: first defined here
  ../../lib/libcurlu-d.a(unity_0.c.obj): In function `curlx_win32_open':
  C:/projects/curl/lib/curl_multibyte.c:92: multiple definition of `curlx_win32
  _open'
  ../../src/libcurltool-d.a(unity_0.c.obj):C:/projects/curl/lib/curl_multibyte.
  c:92: first defined here
  ../../lib/libcurlu-d.a(unity_0.c.obj): In function `curlx_win32_fopen':
  C:/projects/curl/lib/curl_multibyte.c:120: multiple definition of `curlx_win3
  2_fopen'
  ../../src/libcurltool-d.a(unity_0.c.obj):C:/projects/curl/lib/curl_multibyte.
  c:120: first defined here
  ../../lib/libcurlu-d.a(unity_0.c.obj): In function `curlx_win32_stat':
  [...]
  ```
  Ref: https://ci.appveyor.com/project/curlorg/curl/builds/48110107/job/nvlhpt9
  aa4ehny5q#L247

  macOS errors:
  ```
  [ 56%] Linking C executable unit1302
  duplicate symbol '_curlx_sotouz' in:
      ../../lib/libcurlu.a(unity_0_c.c.o)
      ../../src/libcurltool.a(unity_0_c.c.o)
  duplicate symbol '_curlx_sitouz' in:
      ../../lib/libcurlu.a(unity_0_c.c.o)
      ../../src/libcurltool.a(unity_0_c.c.o)
  duplicate symbol '_curlx_uztosz' in:
      ../../lib/libcurlu.a(unity_0_c.c.o)
      ../../src/libcurltool.a(unity_0_c.c.o)
  [...]
  ```
  with config:
  ```
    -DCMAKE_UNITY_BUILD=ON \
    -DENABLE_DEBUG=ON -DBUILD_TESTING=ON -DCMAKE_C_FLAGS=-DDEBUGBUILD \
    -DBUILD_SHARED_LIBS=ON \
    -DBUILD_STATIC_LIBS=OFF
  ```

  Closes #11926

- cmake: lib `CURL_STATICLIB` fixes (Windows)

  - always define `CURL_STATICLIB` when building libcurl for Windows.

    This disables `__declspec(dllexport)` for exported libcurl symbols.
    In normal mode (hide symbols) these exported symbols are specified
    via `libcurl.def`. When not hiding symbols, all symbols are exported
    by default.

    Regression from 1199308dbc902c52be67fc805c72dd2582520d30

    Fixes #11844

  - fix to omit `libcurl.def` when not hiding private symbols.

    Regression from 2ebc74c36a19a1700af394c16855ce144d9878e3

  - fix `ENABLED_DEBUG=ON` + shared curl tool Windows builds by also
    omitting `libcurl.def` in this case, and exporting all symbols
    instead. This ensures that a shared curl tool can access all debug
    functions which are not normally exported from libcurl DLL.

  - delete `INTERFACE_COMPILE_DEFINITIONS "CURL_STATICLIB"` for "objects"
    target.

    Follow-up to 2ebc74c36a19a1700af394c16855ce144d9878e3

  - delete duplicate `BUILDING_LIBCURL` definitions.

  - fix `HIDES_CURL_PRIVATE_SYMBOLS` to not overwrite earlier build settings.

    Follow-up to 1199308dbc902c52be67fc805c72dd2582520d30

  Closes #11914

Daniel Stenberg (25 Sep 2023)

- RELEASE-NOTES: synced

Dan Fandrich (25 Sep 2023)

- tests: fix log directory path in IPFS tests

  Hard-coding the log directory name fails with parallel tests.

  Follow-up to 65b563a96

  Ref: #8805

Daniel Stenberg (25 Sep 2023)

- curl_multi_get_handles: get easy handles from a multi handle

  Closes #11750

Stefan Eissing (25 Sep 2023)

- http: h1/h2 proxy unification

  - use shared code for setting up the CONNECT request
    when tunneling, used in HTTP/1.x and HTTP/2 proxying
  - eliminate use of Curl_buffer_send() and other manipulations
    of `data->req` or `data->state.ulbuf`

  Closes #11808

Natanael Copa (25 Sep 2023)

- lib: use wrapper for curl_mime_data fseek callback

  fseek uses long offset which does not match with curl_off_t. This leads
  to undefined behavior when calling the callback and caused failure on
  arm 32 bit.

  Use a wrapper to solve this and use fseeko which uses off_t instead of
  long.

  Thanks to the nice people at Libera IRC #musl for helping finding this
  out.

  Fixes #11882
  Fixes #11900
  Closes #11918

- configure: sort AC_CHECK_FUNCS

  No functional changes.

Daniel Stenberg (25 Sep 2023)

- warnless: remove unused functions

  Previously put there for use with the intel compiler

  Closes #11932

- GHA/linux: run singleuse to detect single-use global functions

  Use --unit for configure --enable-debug builds

  Closes #11932

- singleuse: add scan for use in other source codes

  This should reduce false-positive to almost zero. Checks for presence in
  unit tests if --unit is specified, which is intended for debug builds
  where unit testing is enabled.

  Closes #11932

- multi: remove Curl_multi_dump

  A debug-only function that is basically never used. Removed to ease the
  use of the singleuse script to detect non-static functions not used
  outside the file where it is defined.

  Closes #11931

Viktor Szakats (24 Sep 2023)

- tests: fix compiler warnings

  Seen with llvm 17 on Windows x64.

  ```
  .../curl/tests/server/rtspd.c:136:13: warning: no previous extern declaration
   for non-static variable 'logdir' [-Wmissing-variable-declarations]
    136 | const char *logdir = "log";
        |             ^
  .../curl/tests/server/rtspd.c:136:7: note: declare 'static' if the variable i
  s not intended to be used outside of this translation unit
    136 | const char *logdir = "log";
        |       ^
  .../curl/tests/server/rtspd.c:137:6: warning: no previous extern declaration 
  for non-static variable 'loglockfile' [-Wmissing-variable-declarations]
    137 | char loglockfile[256];
        |      ^
  .../curl/tests/server/rtspd.c:137:1: note: declare 'static' if the variable i
  s not intended to be used outside of this translation unit
    137 | char loglockfile[256];
        | ^
  .../curl/tests/server/fake_ntlm.c:43:13: warning: no previous extern declarat
  ion for non-static variable 'logdir' [-Wmissing-variable-declarations]
     43 | const char *logdir = "log";
        |             ^
  .../curl/tests/server/fake_ntlm.c:43:7: note: declare 'static' if the variabl
  e is not intended to be used outside of this translation unit
     43 | const char *logdir = "log";
        |       ^
  .../curl/src/tool_doswin.c:350:8: warning: possible misuse of comma operator 
  here [-Wcomma]
    350 |     ++d, ++s;
        |        ^
  .../curl/src/tool_doswin.c:350:5: note: cast expression to void to silence wa
  rning
    350 |     ++d, ++s;
        |     ^~~
        |     (void)( )
  ```

  ```
  .../curl/tests/libtest/lib540.c:146:27: warning: result of comparison 'long' 
  > 2147483647 is always false [-Wtautological-type-limit-compare]
    146 |         int itimeout = (L > (long)INT_MAX) ? INT_MAX : (int)L;
        |                         ~ ^ ~~~~~~~~~~~~~
  1 warning generated.

  .../curl/tests/libtest/libntlmconnect.c:195:31: warning: result of comparison
   'long' > 2147483647 is always false [-Wtautological-type-limit-compare]
    195 |       int itimeout = (timeout > (long)INT_MAX) ? INT_MAX : (int)timeo
  ut;
        |                       ~~~~~~~ ^ ~~~~~~~~~~~~~
  1 warning generated.

  .../curl/tests/libtest/lib591.c:117:31: warning: result of comparison 'long' 
  > 2147483647 is always false [-Wtautological-type-limit-compare]
    117 |       int itimeout = (timeout > (long)INT_MAX) ? INT_MAX : (int)timeo
  ut;
        |                       ~~~~~~~ ^ ~~~~~~~~~~~~~
  1 warning generated.
  .../curl/tests/libtest/lib597.c:99:31: warning: result of comparison 'long' >
   2147483647 is always false [-Wtautological-type-limit-compare]
     99 |       int itimeout = (timeout > (long)INT_MAX) ? INT_MAX : (int)timeo
  ut;
        |                       ~~~~~~~ ^ ~~~~~~~~~~~~~
  1 warning generated.
  ```

  Seen on macOS Intel:
  ```
  .../curl/tests/server/sws.c:440:64: warning: field precision should have type
   'int', but argument has type 'size_t' (aka 'unsigned long') [-Wformat]
            msnprintf(logbuf, sizeof(logbuf), "Got request: %s %.*s HTTP/%d.%d"
  ,
                                                               ~~^~
  1 warning generated.
  ```

  Closes #11925

Jay Satiro (24 Sep 2023)

- url: fix netrc info message

  - Fix netrc info message to use the generic ".netrc" filename if the
    user did not specify a netrc location.

  - Update --netrc doc to add that recent versions of curl on Windows
    prefer .netrc over _netrc.

  Before:
  * Couldn't find host google.com in the (nil) file; using defaults

  After:
  * Couldn't find host google.com in the .netrc file; using defaults

  Closes https://github.com/curl/curl/pull/11904

Dan Fandrich (23 Sep 2023)

- wolfssh: do cleanup in Curl_ssh_cleanup

  Closes: #11921

Daniel Stenberg (24 Sep 2023)

- tool_listhelp: regenerated

  Polished the --ipfs-gateway description

  Fixed the --trace-config description

  The script also fixed some other small mistakes

  Closes #11923

Viktor Szakats (23 Sep 2023)

- Makefile.mk: always set `CURL_STATICLIB` for lib (Windows)

  Also fix to export all symbols in Windows debug builds, making
  `-debug-dyn` builds work with `-DCURL_STATICLIB` set.

  Ref: https://github.com/curl/curl/pull/11914 (same for CMake)

  Closes #11924

Daniel Stenberg (23 Sep 2023)

- quic: set ciphers/curves the same way regular TLS does

  for OpenSSL/BoringSSL

  Fixes #11796
  Reported-by: Karthikdasari0423 on github
  Assisted-by: Jay Satiro
  Closes #11836

- test457: verify --max-filesize with chunked encoding

- lib: let the max filesize option stop too big transfers too

  Previously it would only stop them from getting started if the size is
  known to be too big then.

  Update the libcurl and curl docs accordingly.

  Fixes #11810
  Reported-by: Elliot Killick
  Assisted-by: Jay Satiro
  Closes #11820

Viktor Szakats (23 Sep 2023)

- mingw: delete support for legacy mingw.org toolchain

  Drop support for "old" / "legacy" / "classic" / "v1" / "mingw32" MinGW:
    https://en.wikipedia.org/wiki/MinGW, https://osdn.net/projects/mingw/
  Its homepage used to be http://mingw.org/ [no HTTPS], and broken now.
  It supported the x86 CPU only and used a old Windows API header and
  implib set, often causing issues. It also misses most modern Windows
  features, offering old versions of both binutils and gcc (no llvm/clang
  support). It was last updated 2 years ago.

  curl now relies on toolchains based on the mingw-w64 project:
  https://www.mingw-w64.org/  https://sourceforge.net/projects/mingw-w64/
  https://www.msys2.org/  https://github.com/msys2/msys2
  https://github.com/mstorsjo/llvm-mingw
  (Also available via Linux and macOS package managers.)

  Closes #11625

Mark Gaiser (23 Sep 2023)

- curl: add support for the IPFS protocols:

  - ipfs://<cid>
  - ipns://<cid>

  This allows you tu use ipfs in curl like:
  curl ipfs://<cid>
  and
  curl ipns://<cid>

  For more information consult the readme at:
  https://curl.se/docs/ipfs.html

  Closes #8805

Daniel Stenberg (23 Sep 2023)

- bufq: remove Curl_bufq_skip_and_shift (unused)

  Closes #11915

- scripts/singleuse.pl: add curl_global_trace

Viktor Szakats (22 Sep 2023)

- cmake: fix unity symbol collisions in h2 builds

  Regression from 331b89a319d0067fa1e6441719307cfef9c7960f

  Reviewed-by: Daniel Stenberg
  Reviewed-by: Jay Satiro
  Closes #11912

Daniel Stenberg (22 Sep 2023)

- RELEASE-NOTES: synced

Dan Fandrich (21 Sep 2023)

- github/labeler: improve the match patterns

  This includes new rules for setting the appleOS and logging labels and
  matches on some example files. Also, enable dot mode for wildcard
  matches in the .github directory.

Daniel Stenberg (21 Sep 2023)

- upload-file.d: describe the file name slash/backslash handling

  Closes #11911

Jakub Jelen (21 Sep 2023)

- libssh: cap SFTP packet size sent

  Due to libssh limitations

  Signed-off-by: Jakub Jelen <jjelen@redhat.com>

  Closes #11804

Daniel Stenberg (21 Sep 2023)

- curl.h: mark CURLSSLBACKEND_NSS as deprecated since 8.3.0

  Closes #11905

- mailmap: unify Michael Osipov under a single email

Ted Lyngmo (21 Sep 2023)

- docs: use CURLSSLBACKEND_NONE

  [ssl] use CURLSSLBACKEND_NONE instead of (curl_sslbackend)-1 in
  documentation and examples.

  Signed-off-by: Ted Lyngmo <ted@lyncon.se>

  Closes #11909

Dan Fandrich (21 Sep 2023)

- github/labeler: give the sync-labels config item a default value

  This shouldn't be necessary and is likely a bug with this beta version
  of the labeller.

  Also, fix the negative matches for the documentation label.

  Follow-up to dd12b452a
  Closes #11907

- github/labeler: fix up more the labeler config format

  The new version didn't like the workaround we had for a bug in the
  previous labeler version, and it should no longer be needed.

  Follow-up to dd12b452a
  Closes #11906

- github/labeler: fix indenting to try to appease labeller

  Follow-up to dd12b452a

Jay Satiro (21 Sep 2023)

- libssh2: fix error message on failed pubkey-from-file

  - If libssh2_userauth_publickey_fromfile_ex returns -1 then show error
    message "SSH public key authentication failed: Reason unknown (-1)".

  When libssh2_userauth_publickey_fromfile_ex returns -1 it does so as a
  generic error and therefore doesn't set an error message. AFAICT that is
  not documented behavior.

  Prior to this change libcurl retrieved the last set error message which
  would be from a previous function failing. That resulted in misleading
  auth failed error messages in verbose mode.

  Bug: https://github.com/curl/curl/issues/11837#issue-1891827355
  Reported-by: consulion@users.noreply.github.com

  Closes https://github.com/curl/curl/pull/11881

Stefan Eissing (21 Sep 2023)

- pytest: exclude test_03_goaway in CI runs due to timing dependency

  Closes #11860

- lib: disambiguate Curl_client_write flag semantics

  - use CLIENTWRITE_BODY *only* when data is actually body data
  - add CLIENTWRITE_INFO for meta data that is *not* a HEADER
  - debug assertions that BODY/INFO/HEADER is not used mixed
  - move `data->set.include_header` check into Curl_client_write
    so protocol handlers no longer have to care
  - add special in FTP for `data->set.include_header` for historic,
    backward compatible reasons
  - move unpausing of client writes from easy.c to sendf.c, so that
    code is in one place and can forward flags correctly

  Closes #11885

Patrick Monnerat (21 Sep 2023)

- tftpd: always use curl's own tftp.h

  Using the system's provided arpa/tftp.h and optimizing, GCC 12 detects
  and reports a stringop-overread warning:

  tftpd.c: In function ‘write_behind.isra’:
  tftpd.c:485:12: warning: ‘write’ reading between 1 and 2147483647 bytes f
  rom a region of size 0 [-Wstringop-overread]
    485 |     return write(test->ofile, writebuf, count);
        |            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  In file included from tftpd.c:71:
  /usr/include/arpa/tftp.h:58:30: note: source object ‘tu_data’ of size 0
     58 |                         char tu_data[0];        /* data or error stri
  ng */
        |                              ^~~~~~~

  This occurs because writebuf points to this field and the latter
  cannot be considered as being of dynamic length because it is not
  the last field in the structure. Thus it is bound to its declared
  size.

  This commit always uses curl's own version of tftp.h where the
  target field is last in its structure, effectively avoiding the
  warning.

  As HAVE_ARPA_TFTP_H is not used anymore, cmake/configure checks for
  arpa/tftp.h are removed.

  Closes #11897

Dan Fandrich (20 Sep 2023)

- test1474: make precheck more robust on non-Solaris systems

  If uname -r returns something odd, perl could return an error code and
  the test would be erroneously skipped. The qx// syntax avoid this.

  Followup to 08f9b2148

- github/labeler: switch to the 5 beta version

  This version adds an important feature that will allow more PRs to be
  labelled. Rather than being limited to labeling PRs with files that
  match a single glob, it can now label them if multiple changed files
  match any one of a number of globs.

Daniel Stenberg (20 Sep 2023)

- lib: enable hmac for digest as well

  Previously a build that disabled NTLM and aws-sigv4 would fail to build
  since the hmac was disabled, but it is also needed for digest auth.

  Follow-up to e92edfbef64448ef

  Fixes #11890
  Reported-by: Aleksander Mazur
  Closes #11896

- idn: if idn2_check_version returns NULL, return error

  ... this avoids a NULL dereference for this unusual case.

  Reported-by: s0urc3_ on hackerone
  Closes #11898

- http: fix CURL_DISABLE_BEARER_AUTH breakage

  When bearer auth was disabled, the if/else logic got wrong and caused
  problems.

  Follow-up to e92edfbef64448ef461
  Fixes #11892
  Reported-by: Aleksander Mazur
  Closes #11895

Michael Osipov (20 Sep 2023)

- wolfssl: allow capath with CURLOPT_CAINFO_BLOB

  Remain consistent with OpenSSL. While CAfile is nulled as documented
  with CURLOPT_CAINFO_BLOB, CApath remains intact.

  Closes #11886

- wolfssl: use ssl_cafile/ssl_capath variables consistent with openssl.c

  Closes #11886

Dan Fandrich (19 Sep 2023)

- test1474: disable test on NetBSD, OpenBSD and Solaris 10

  These kernels only send a fraction of the requested amount of the first
  large block, invalidating the assumptions of the test and causing it to
  fail.

  Assisted-by: Christian Weisgerber
  Ref: https://curl.se/mail/lib-2023-09/0021.html
  Closes #11888

Ryan Schmidt (20 Sep 2023)

- cmake, configure: also link with CoreServices

  When linking with CoreFoundation, also link with CoreServices which is
  apparently required to avoid an NSInvalidArgumentException in software
  linking with libcurl on macOS Sonoma 14 and later.

  Fixes #11893
  Closes #11894

Marc Hoersken (19 Sep 2023)

- CI/azure: remove pip, wheel, cryptography, pyopenssl and impacket

  These dependencies are now already included in the Docker image.

  Ref: https://github.com/mback2k/curl-docker-winbuildenv/commit/2607a31bcab544
  b41d15606e97f38cf312c1ce56

  Closes #11889

Daniel Stenberg (19 Sep 2023)

- wolfssl: if CURLOPT_CAINFO_BLOB is set, ignore the CA files

  Ref: #11883
  Reported-by: Michael Osipov
  Closes #11884

- RELEASE-NOTES: synced

- test3103: CURLOPT_COOKIELIST test

- cookie: set ->running in cookie_init even if data is NULL

  This is a regression introduced in b1b326ec500 (shipped in curl 8.1.0)

  Test 3103 verifies.

  Fixes #11875
  Reported-by: wangp on github
  Closes #11876

- test498: total header size for all redirects is larger than accepted

- http: use per-request counter to check too large headers

  Not the counter that accumulates all headers over all redirects.

  Follow-up to 3ee79c1674fd6

  Do a second check for 20 times the limit for the accumulated size for
  all headers.

  Fixes #11871
  Reported-by: Joshix-1 on github
  Closes #11872

Jay Satiro (18 Sep 2023)

- THANKS: add Eric Murphy

  He reported #11850 (quiche build error) but I forgot to add a
  'reported-by' entry in the fix 267e14f1.

Daniel Stenberg (18 Sep 2023)

- h2-proxy: remove left-over mistake in drain_tunnel()

  Left-over from 331b89a319

  Reported-by: 南宫雪珊

  Closes https://github.com/curl/curl/pull/11877

vvb2060 (18 Sep 2023)

- lib: failf/infof compiler warnings

  Closes #11874

Daniel Stenberg (17 Sep 2023)

- rand: fix 'alnum': array is too small to include a terminating null character

  It was that small on purpose, but this change now adds the null byte to
  avoid the error.

  Follow-up to 3aa3cc9b052353b1

  Reported-by: Dan Fandrich
  Ref: #11838
  Closes #11870

Mathias Fuchs (16 Sep 2023)

- cmake: fix the help text to the static build option in CMakeLists.txt

  Closes #11843

John Haugabook (16 Sep 2023)

- MANUAL.md: change domain to example.com

  Closes #11866

Daniel Stenberg (16 Sep 2023)

- doh: inherit DEBUGFUNCTION/DATA

  When creating new transfers for doing DoH, they now inherit the debug
  settings from the initiating transfer, so that the application can
  redirect and handle the verbose output correctly even for the DoH
  transfers.

  Reported-by: calvin2021y on github
  Fixes #11864
  Closes #11869

Dan Fandrich (16 Sep 2023)

- http_aws_sigv4: fix sorting with empty parts

  When comparing with an empty part, the non-empty one is always
  considered greater-than. Previously, the two would be considered equal
  which would randomly place empty parts amongst non-empty ones. This
  showed as a test 439 failure on Solaris as it uses a different
  implementation of qsort() that compares parts differently.

  Fixes #11855
  Closes #11868

- CI: ignore the "flaky" and "timing-dependent" test results

  CI builds will now run these tests, but will ignore the results if they
  fail. The relevant tests are ones that are sensitive to timing or
  have edge conditions that make them more likely to fail on CI servers,
  which are often heavily overloaded and slow.

  This change only adds two additional tests to be ignored, since the
  others already had the flaky keyword.

  Closes #11865

- runtests: eliminate a warning on old perl versions

  The warning "Use of implicit split to @_ is deprecated" showed between
  perl versions about 5.8 through 5.11.

- tests: log the test result code after each libtest

  This makes it easier to determine the test status. Also, capitalize
  FAILURE and ABORT messages in log lines to make them easier to spot.

Harry Sintonen (16 Sep 2023)

- misc: better random strings

  Generate alphanumerical random strings.

  Prior this change curl used to create random hex strings. This was
  mostly okay, but having alphanumerical random strings is better: The
  strings have more entropy in the same space.

  The MIME multipart boundary used to be mere 64-bits of randomness due
  to being 16 hex chars. With these changes the boundary is 22
  alphanumerical chars, or little over 130 bits of randomness.

  Closes #11838

Daniel Stenberg (15 Sep 2023)

- cookie: reduce variable scope, add const

- cookie: do not store the expire or max-age strings

  Convert it to an expire time at once and save memory.

  Closes #11862

- cookie: remove unnecessary struct fields

  Plus: reduce the hash table size from 256 to 63. It seems unlikely to
  make much of a speed difference for most use cases but saves 1.5KB of
  data per instance.

  Closes #11862

- RELEASE-NOTES: synced

  Bumped to 8.4.0, the next presumed version

Dan Fandrich (14 Sep 2023)

- test2600: remove special case handling for USE_ALARM_TIMEOUT

  This was originally added to handle platforms that supported only 1
  second granularity in connect timeouts, but after some recent changes
  the test currently permafails on several Windows platforms.

  The need for this special-case was removed in commit 8627416, which
  increased the connect timeout in all cases to well above 1 second.

  Fixes #11767
  Closes #11849

Daniel Stenberg (14 Sep 2023)

- SECURITY-PROCESS.md. call it vulnerability disclosure policy

  SECURITY-PROCESS.md -> VULN-DISCLOSURE-POLICY.md

  This a name commonly used for a document like this. This name helps
  users find it.

  Closes #11852

Junho Choi (14 Sep 2023)

- quiche: fix build error with --with-ca-fallback

  - Fix build error when curl is built with --with-quiche
    and --with-ca-fallback.

  - Add --with-ca-fallback to the quiche CI job.

  Fixes https://github.com/curl/curl/issues/11850
  Closes https://github.com/curl/curl/pull/11847

Jay Satiro (14 Sep 2023)

- escape: replace Curl_isunreserved with ISUNRESERVED

  - Use the ALLCAPS version of the macro so that it is clear a macro is
    being called that evaluates the variable multiple times.

  - Also capitalize macro isurlpuntcs => ISURLPUNTCS since it evaluates
    a variable multiple times.

  This is a follow-up to 291d225a which changed Curl_isunreserved into an
  alias macro for ISUNRESERVED. The problem is the former is not easily
  identified as a macro by the caller, which could lead to a bug.

  For example, ISUNRESERVED(*foo++) is easily identifiable as wrong but
  Curl_isunreserved(*foo++) is not even though they both are the same.

  Closes https://github.com/curl/curl/pull/11846

Dan Fandrich (13 Sep 2023)

- tests: increase the default server logs lock timeout

  This timeout is used to wait for the server to finish writing its logs
  before checking them against the expected values. An overloaded machine
  could take more than the two seconds previously allocated, so increase
  the timeout to 5 seconds.

  Ref: #11328
  Closes #11834

- tests: increase TEST_HANG_TIMEOUT in two tests

  These tests had a 5 second timeout compared to 60 seconds for all other
  tests. Make these consistent with the others for more reliability on
  heavily-loaded machines.

  Ref: #11328

- test1056: disable on Windows

  This test relies on the IPv6 scope field being ignored when connecting to
  ipv6-localhost (i.e. [::1%259999] is treated as [::1]). Maybe this is a bit
  dodgy, but it works on all our test platforms except Windows. This
  test was disabled manually on all Windows CI builds already, so instead
  add an incompatible feature and precheck so it's skipped on Windows
  everywhere automatically.

- test587: add a slight delay after test

  This test is designed to connect to the server, then immediately send a
  few bytes and disconnect. In some situations, such as on a loaded
  server, this doesn't give the server enough time to write its lock file
  before its existence is checked. The test harness then fails to find the
  server's input log file (because it hasn't been written yet) and fails
  the test. By adding a short delay after the test, the HTTP server has
  enough time to write its lock file which gives itself more time to write
  its remaining files.

  Ref: #11328

- tests: stop overriding the lock timeout

  These tests reduce the server lock wait timeout which can increase
  flakiness on loaded machines. Since this is merely an optimization,
  eliminate them in favour of reliability.

  Ref: #11328

- tests: add some --expect100-timeout to reduce timing dependencies

  These tests can fail when the test machine is so slow that the test HTTP
  server didn't get a chance to complete before the client's one second
  100-continue timeout triggered. Increase that 1 second to 999 seconds so
  this situation doesn't happen.

  Ref: #11328

- test661: return from test early in case of curl error

- tests: add the timing-dependent keyword on several tests

  These are ones likely to fail on heavily-loaded machines that alter the
  normal test timing. Most of these tests already had the flaky keyword
  since this condition makes them more likely to fail on CI.

- test1592: greatly increase the maximum test timeout

  It was too short to be reliable on heavily loaded CI machines, and
  as a fail-safe only, it didn't need to be short.

  Ref: #11328

- test: minor test cleanups

  Remove an obsolete block of code in tests 2032 & 576.
  Add a comment in test 1474.

- tests: quadruple the %FTPTIME2 and %FTPTIME3 timeouts

  This gives more of a margin for error when running on overloaded CI
  servers.

  Ref: #11328

- tests: improve SLOWDOWN test reliability by reducing sent data

  These tests are run in SLOWDOWN mode which adds a 10 msec delay after
  each character output, which means it takes at least 1.6 seconds (and
  320 kernel calls) just to get through the long welcome banner. On an
  overloaded system, this can end up taking much more than 1.6 seconds,
  and even more than the 7 or 16 second curl timeout that the tests rely
  on, causing them to fail. Reducing the size of the welcome banner drops
  the total number of characters sent before the transfer starts by more
  than half, which reduces the opportunity for test-breaking slowdowns by
  the same amount.

  Ref: #11328

- test650: fix an end tag typo

Jay Satiro (13 Sep 2023)

- tool_cb_wrt: fix debug assertion

  - Fix off-by-one out-of-bounds array index in Windows debug assertion.

  Bug: https://github.com/curl/curl/commit/af3f4e41#r127212213
  Reported-by: Gisle Vanem

Daniel Stenberg (13 Sep 2023)

- ctype: add ISUNRESERVED()

  ... and make Curl_isunreserved() use that macro instead of providing a
  separate funtion for the purpose.

  Closes #11840

Version 8.3.0 (13 Sep 2023)

Daniel Stenberg (13 Sep 2023)

- RELEASE-NOTES: syn ced

  curl 8.3.0 release

- THANKS: contributors from 8.3.0

Thorsten Klein (12 Sep 2023)

- cmake: set SIZEOF_LONG_LONG in curl_config.h

  in order to support 32bit builds regarding wolfssl CTC_SETTINGS

  Closes #11839

Jay Satiro (12 Sep 2023)

- curl_ngtcp2: fix error message

- http_aws_sigv4: handle no-value user header entries

  - Handle user headers in format 'name:' and 'name;' with no value.

  The former is used when the user wants to remove an internal libcurl
  header and the latter is used when the user actually wants to send a
  no-value header in the format 'name:' (note the semi-colon is converted
  by libcurl to a colon).

  Prior to this change the AWS header import code did not special case
  either of those and the generated AWS SignedHeaders would be incorrect.

  Reported-by: apparentorder@users.noreply.github.com

  Ref: https://curl.se/docs/manpage.html#-H

  Fixes https://github.com/curl/curl/issues/11664
  Closes https://github.com/curl/curl/pull/11668

Dan Fandrich (11 Sep 2023)

- CI: run pytest with the -v option

  This lists of the test cases being run so it can be tracked over time.

  Closes #11824

Daniel Stenberg (11 Sep 2023)

- HTTP3: the msquic backend is not functional

  I ask that we do not submit bugs for this backend just yet as we know it
  does not fully work.

  Closes #11831
  Closes #11819

- aws_sigv4: the query canon code miscounted URL encoded input

  Added some extra ampersands to test 439 to verify "blank" query parts

  Follow-up to fc76a24c53b08cdf

  Closes #11829

vvb2060 (11 Sep 2023)

- quic: don't set SNI if hostname is an IP address

  We already do this for TLS connections.

  RFC 6066 says: Literal IPv4 and IPv6 addresses are not permitted in
  "HostName".

  Ref: https://www.rfc-editor.org/rfc/rfc6066#section-3

  Fixes https://github.com/curl/curl/issues/11827
  Closes https://github.com/curl/curl/pull/11828

Daniel Stenberg (10 Sep 2023)

- RELEASE-NOTES: synced