From fe2500aa99137c9ce35907c118745d65a0c0c07e Mon Sep 17 00:00:00 2001
From: George Hazan <ghazan@miranda.im>
Date: Tue, 17 Sep 2019 12:36:24 +0300
Subject: libcurl updated to 7.66
---
libs/libcurl/src/ssh.c | 3337 ------------------------------------------------
1 file changed, 3337 deletions(-)
delete mode 100644 libs/libcurl/src/ssh.c
(limited to 'libs/libcurl/src/ssh.c')
diff --git a/libs/libcurl/src/ssh.c b/libs/libcurl/src/ssh.c
deleted file mode 100644
index a265c3c9ad..0000000000
--- a/libs/libcurl/src/ssh.c
+++ /dev/null
@@ -1,3337 +0,0 @@
-/***************************************************************************
- * _ _ ____ _
- * Project ___| | | | _ \| |
- * / __| | | | |_) | |
- * | (__| |_| | _ <| |___
- * \___|\___/|_| \_\_____|
- *
- * Copyright (C) 1998 - 2019, Daniel Stenberg, <daniel@haxx.se>, et al.
- *
- * This software is licensed as described in the file COPYING, which
- * you should have received as part of this distribution. The terms
- * are also available at https://curl.haxx.se/docs/copyright.html.
- *
- * You may opt to use, copy, modify, merge, publish, distribute and/or sell
- * copies of the Software, and permit persons to whom the Software is
- * furnished to do so, under the terms of the COPYING file.
- *
- * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
- * KIND, either express or implied.
- *
- ***************************************************************************/
-
-/* #define CURL_LIBSSH2_DEBUG */
-
-#include "curl_setup.h"
-
-#ifdef USE_LIBSSH2
-
-#include <limits.h>
-
-#include <libssh2.h>
-#include <libssh2_sftp.h>
-
-#ifdef HAVE_FCNTL_H
-#include <fcntl.h>
-#endif
-
-#ifdef HAVE_NETINET_IN_H
-#include <netinet/in.h>
-#endif
-#ifdef HAVE_ARPA_INET_H
-#include <arpa/inet.h>
-#endif
-#ifdef HAVE_UTSNAME_H
-#include <sys/utsname.h>
-#endif
-#ifdef HAVE_NETDB_H
-#include <netdb.h>
-#endif
-#ifdef __VMS
-#include <in.h>
-#include <inet.h>
-#endif
-
-#if (defined(NETWARE) && defined(__NOVELL_LIBC__))
-#undef in_addr_t
-#define in_addr_t unsigned long
-#endif
-
-#include <curl/curl.h>
-#include "urldata.h"
-#include "sendf.h"
-#include "hostip.h"
-#include "progress.h"
-#include "transfer.h"
-#include "escape.h"
-#include "http.h" /* for HTTP proxy tunnel stuff */
-#include "ssh.h"
-#include "url.h"
-#include "speedcheck.h"
-#include "getinfo.h"
-#include "strdup.h"
-#include "strcase.h"
-#include "vtls/vtls.h"
-#include "connect.h"
-#include "strerror.h"
-#include "inet_ntop.h"
-#include "parsedate.h" /* for the week day and month names */
-#include "sockaddr.h" /* required for Curl_sockaddr_storage */
-#include "strtoofft.h"
-#include "multiif.h"
-#include "select.h"
-#include "warnless.h"
-#include "curl_path.h"
-
-/* The last 3 #include files should be in this order */
-#include "curl_printf.h"
-#include "curl_memory.h"
-#include "memdebug.h"
-
-#if LIBSSH2_VERSION_NUM >= 0x010206
-/* libssh2_sftp_statvfs and friends were added in 1.2.6 */
-#define HAS_STATVFS_SUPPORT 1
-#endif
-
-#define sftp_libssh2_last_error(s) curlx_ultosi(libssh2_sftp_last_error(s))
-
-#define sftp_libssh2_realpath(s,p,t,m) \
- libssh2_sftp_symlink_ex((s), (p), curlx_uztoui(strlen(p)), \
- (t), (m), LIBSSH2_SFTP_REALPATH)
-
-
-/* Local functions: */
-static const char *sftp_libssh2_strerror(int err);
-static LIBSSH2_ALLOC_FUNC(my_libssh2_malloc);
-static LIBSSH2_REALLOC_FUNC(my_libssh2_realloc);
-static LIBSSH2_FREE_FUNC(my_libssh2_free);
-
-static CURLcode ssh_connect(struct connectdata *conn, bool *done);
-static CURLcode ssh_multi_statemach(struct connectdata *conn, bool *done);
-static CURLcode ssh_do(struct connectdata *conn, bool *done);
-
-static CURLcode scp_done(struct connectdata *conn,
- CURLcode, bool premature);
-static CURLcode scp_doing(struct connectdata *conn,
- bool *dophase_done);
-static CURLcode scp_disconnect(struct connectdata *conn, bool dead_connection);
-
-static CURLcode sftp_done(struct connectdata *conn,
- CURLcode, bool premature);
-static CURLcode sftp_doing(struct connectdata *conn,
- bool *dophase_done);
-static CURLcode sftp_disconnect(struct connectdata *conn, bool dead);
-static
-CURLcode sftp_perform(struct connectdata *conn,
- bool *connected,
- bool *dophase_done);
-
-static int ssh_getsock(struct connectdata *conn,
- curl_socket_t *sock, /* points to numsocks number
- of sockets */
- int numsocks);
-
-static int ssh_perform_getsock(const struct connectdata *conn,
- curl_socket_t *sock, /* points to numsocks
- number of sockets */
- int numsocks);
-
-static CURLcode ssh_setup_connection(struct connectdata *conn);
-
-/*
- * SCP protocol handler.
- */
-
-const struct Curl_handler Curl_handler_scp = {
- "SCP", /* scheme */
- ssh_setup_connection, /* setup_connection */
- ssh_do, /* do_it */
- scp_done, /* done */
- ZERO_NULL, /* do_more */
- ssh_connect, /* connect_it */
- ssh_multi_statemach, /* connecting */
- scp_doing, /* doing */
- ssh_getsock, /* proto_getsock */
- ssh_getsock, /* doing_getsock */
- ZERO_NULL, /* domore_getsock */
- ssh_perform_getsock, /* perform_getsock */
- scp_disconnect, /* disconnect */
- ZERO_NULL, /* readwrite */
- ZERO_NULL, /* connection_check */
- PORT_SSH, /* defport */
- CURLPROTO_SCP, /* protocol */
- PROTOPT_DIRLOCK | PROTOPT_CLOSEACTION
- | PROTOPT_NOURLQUERY /* flags */
-};
-
-
-/*
- * SFTP protocol handler.
- */
-
-const struct Curl_handler Curl_handler_sftp = {
- "SFTP", /* scheme */
- ssh_setup_connection, /* setup_connection */
- ssh_do, /* do_it */
- sftp_done, /* done */
- ZERO_NULL, /* do_more */
- ssh_connect, /* connect_it */
- ssh_multi_statemach, /* connecting */
- sftp_doing, /* doing */
- ssh_getsock, /* proto_getsock */
- ssh_getsock, /* doing_getsock */
- ZERO_NULL, /* domore_getsock */
- ssh_perform_getsock, /* perform_getsock */
- sftp_disconnect, /* disconnect */
- ZERO_NULL, /* readwrite */
- ZERO_NULL, /* connection_check */
- PORT_SSH, /* defport */
- CURLPROTO_SFTP, /* protocol */
- PROTOPT_DIRLOCK | PROTOPT_CLOSEACTION
- | PROTOPT_NOURLQUERY /* flags */
-};
-
-static void
-kbd_callback(const char *name, int name_len, const char *instruction,
- int instruction_len, int num_prompts,
- const LIBSSH2_USERAUTH_KBDINT_PROMPT *prompts,
- LIBSSH2_USERAUTH_KBDINT_RESPONSE *responses,
- void **abstract)
-{
- struct connectdata *conn = (struct connectdata *)*abstract;
-
-#ifdef CURL_LIBSSH2_DEBUG
- fprintf(stderr, "name=%s\n", name);
- fprintf(stderr, "name_len=%d\n", name_len);
- fprintf(stderr, "instruction=%s\n", instruction);
- fprintf(stderr, "instruction_len=%d\n", instruction_len);
- fprintf(stderr, "num_prompts=%d\n", num_prompts);
-#else
- (void)name;
- (void)name_len;
- (void)instruction;
- (void)instruction_len;
-#endif /* CURL_LIBSSH2_DEBUG */
- if(num_prompts == 1) {
- responses[0].text = strdup(conn->passwd);
- responses[0].length = curlx_uztoui(strlen(conn->passwd));
- }
- (void)prompts;
- (void)abstract;
-} /* kbd_callback */
-
-static CURLcode sftp_libssh2_error_to_CURLE(int err)
-{
- switch(err) {
- case LIBSSH2_FX_OK:
- return CURLE_OK;
-
- case LIBSSH2_FX_NO_SUCH_FILE:
- case LIBSSH2_FX_NO_SUCH_PATH:
- return CURLE_REMOTE_FILE_NOT_FOUND;
-
- case LIBSSH2_FX_PERMISSION_DENIED:
- case LIBSSH2_FX_WRITE_PROTECT:
- case LIBSSH2_FX_LOCK_CONFlICT:
- return CURLE_REMOTE_ACCESS_DENIED;
-
- case LIBSSH2_FX_NO_SPACE_ON_FILESYSTEM:
- case LIBSSH2_FX_QUOTA_EXCEEDED:
- return CURLE_REMOTE_DISK_FULL;
-
- case LIBSSH2_FX_FILE_ALREADY_EXISTS:
- return CURLE_REMOTE_FILE_EXISTS;
-
- case LIBSSH2_FX_DIR_NOT_EMPTY:
- return CURLE_QUOTE_ERROR;
-
- default:
- break;
- }
-
- return CURLE_SSH;
-}
-
-static CURLcode libssh2_session_error_to_CURLE(int err)
-{
- switch(err) {
- /* Ordered by order of appearance in libssh2.h */
- case LIBSSH2_ERROR_NONE:
- return CURLE_OK;
-
- /* This is the error returned by libssh2_scp_recv2
- * on unknown file */
- case LIBSSH2_ERROR_SCP_PROTOCOL:
- return CURLE_REMOTE_FILE_NOT_FOUND;
-
- case LIBSSH2_ERROR_SOCKET_NONE:
- return CURLE_COULDNT_CONNECT;
-
- case LIBSSH2_ERROR_ALLOC:
- return CURLE_OUT_OF_MEMORY;
-
- case LIBSSH2_ERROR_SOCKET_SEND:
- return CURLE_SEND_ERROR;
-
- case LIBSSH2_ERROR_HOSTKEY_INIT:
- case LIBSSH2_ERROR_HOSTKEY_SIGN:
- case LIBSSH2_ERROR_PUBLICKEY_UNRECOGNIZED:
- case LIBSSH2_ERROR_PUBLICKEY_UNVERIFIED:
- return CURLE_PEER_FAILED_VERIFICATION;
-
- case LIBSSH2_ERROR_PASSWORD_EXPIRED:
- return CURLE_LOGIN_DENIED;
-
- case LIBSSH2_ERROR_SOCKET_TIMEOUT:
- case LIBSSH2_ERROR_TIMEOUT:
- return CURLE_OPERATION_TIMEDOUT;
-
- case LIBSSH2_ERROR_EAGAIN:
- return CURLE_AGAIN;
- }
-
- return CURLE_SSH;
-}
-
-static LIBSSH2_ALLOC_FUNC(my_libssh2_malloc)
-{
- (void)abstract; /* arg not used */
- return malloc(count);
-}
-
-static LIBSSH2_REALLOC_FUNC(my_libssh2_realloc)
-{
- (void)abstract; /* arg not used */
- return realloc(ptr, count);
-}
-
-static LIBSSH2_FREE_FUNC(my_libssh2_free)
-{
- (void)abstract; /* arg not used */
- if(ptr) /* ssh2 agent sometimes call free with null ptr */
- free(ptr);
-}
-
-/*
- * SSH State machine related code
- */
-/* This is the ONLY way to change SSH state! */
-static void state(struct connectdata *conn, sshstate nowstate)
-{
- struct ssh_conn *sshc = &conn->proto.sshc;
-#if defined(DEBUGBUILD) && !defined(CURL_DISABLE_VERBOSE_STRINGS)
- /* for debug purposes */
- static const char * const names[] = {
- "SSH_STOP",
- "SSH_INIT",
- "SSH_S_STARTUP",
- "SSH_HOSTKEY",
- "SSH_AUTHLIST",
- "SSH_AUTH_PKEY_INIT",
- "SSH_AUTH_PKEY",
- "SSH_AUTH_PASS_INIT",
- "SSH_AUTH_PASS",
- "SSH_AUTH_AGENT_INIT",
- "SSH_AUTH_AGENT_LIST",
- "SSH_AUTH_AGENT",
- "SSH_AUTH_HOST_INIT",
- "SSH_AUTH_HOST",
- "SSH_AUTH_KEY_INIT",
- "SSH_AUTH_KEY",
- "SSH_AUTH_GSSAPI",
- "SSH_AUTH_DONE",
- "SSH_SFTP_INIT",
- "SSH_SFTP_REALPATH",
- "SSH_SFTP_QUOTE_INIT",
- "SSH_SFTP_POSTQUOTE_INIT",
- "SSH_SFTP_QUOTE",
- "SSH_SFTP_NEXT_QUOTE",
- "SSH_SFTP_QUOTE_STAT",
- "SSH_SFTP_QUOTE_SETSTAT",
- "SSH_SFTP_QUOTE_SYMLINK",
- "SSH_SFTP_QUOTE_MKDIR",
- "SSH_SFTP_QUOTE_RENAME",
- "SSH_SFTP_QUOTE_RMDIR",
- "SSH_SFTP_QUOTE_UNLINK",
- "SSH_SFTP_QUOTE_STATVFS",
- "SSH_SFTP_GETINFO",
- "SSH_SFTP_FILETIME",
- "SSH_SFTP_TRANS_INIT",
- "SSH_SFTP_UPLOAD_INIT",
- "SSH_SFTP_CREATE_DIRS_INIT",
- "SSH_SFTP_CREATE_DIRS",
- "SSH_SFTP_CREATE_DIRS_MKDIR",
- "SSH_SFTP_READDIR_INIT",
- "SSH_SFTP_READDIR",
- "SSH_SFTP_READDIR_LINK",
- "SSH_SFTP_READDIR_BOTTOM",
- "SSH_SFTP_READDIR_DONE",
- "SSH_SFTP_DOWNLOAD_INIT",
- "SSH_SFTP_DOWNLOAD_STAT",
- "SSH_SFTP_CLOSE",
- "SSH_SFTP_SHUTDOWN",
- "SSH_SCP_TRANS_INIT",
- "SSH_SCP_UPLOAD_INIT",
- "SSH_SCP_DOWNLOAD_INIT",
- "SSH_SCP_DOWNLOAD",
- "SSH_SCP_DONE",
- "SSH_SCP_SEND_EOF",
- "SSH_SCP_WAIT_EOF",
- "SSH_SCP_WAIT_CLOSE",
- "SSH_SCP_CHANNEL_FREE",
- "SSH_SESSION_DISCONNECT",
- "SSH_SESSION_FREE",
- "QUIT"
- };
-
- /* a precaution to make sure the lists are in sync */
- DEBUGASSERT(sizeof(names)/sizeof(names[0]) == SSH_LAST);
-
- if(sshc->state != nowstate) {
- infof(conn->data, "SFTP %p state change from %s to %s\n",
- (void *)sshc, names[sshc->state], names[nowstate]);
- }
-#endif
-
- sshc->state = nowstate;
-}
-
-
-#ifdef HAVE_LIBSSH2_KNOWNHOST_API
-static int sshkeycallback(struct Curl_easy *easy,
- const struct curl_khkey *knownkey, /* known */
- const struct curl_khkey *foundkey, /* found */
- enum curl_khmatch match,
- void *clientp)
-{
- (void)easy;
- (void)knownkey;
- (void)foundkey;
- (void)clientp;
-
- /* we only allow perfect matches, and we reject everything else */
- return (match != CURLKHMATCH_OK)?CURLKHSTAT_REJECT:CURLKHSTAT_FINE;
-}
-#endif
-
-/*
- * Earlier libssh2 versions didn't have the ability to seek to 64bit positions
- * with 32bit size_t.
- */
-#ifdef HAVE_LIBSSH2_SFTP_SEEK64
-#define SFTP_SEEK(x,y) libssh2_sftp_seek64(x, (libssh2_uint64_t)y)
-#else
-#define SFTP_SEEK(x,y) libssh2_sftp_seek(x, (size_t)y)
-#endif
-
-/*
- * Earlier libssh2 versions didn't do SCP properly beyond 32bit sizes on 32bit
- * architectures so we check of the necessary function is present.
- */
-#ifndef HAVE_LIBSSH2_SCP_SEND64
-#define SCP_SEND(a,b,c,d) libssh2_scp_send_ex(a, b, (int)(c), (size_t)d, 0, 0)
-#else
-#define SCP_SEND(a,b,c,d) libssh2_scp_send64(a, b, (int)(c), \
- (libssh2_uint64_t)d, 0, 0)
-#endif
-
-/*
- * libssh2 1.2.8 fixed the problem with 32bit ints used for sockets on win64.
- */
-#ifdef HAVE_LIBSSH2_SESSION_HANDSHAKE
-#define libssh2_session_startup(x,y) libssh2_session_handshake(x,y)
-#endif
-
-static CURLcode ssh_knownhost(struct connectdata *conn)
-{
- CURLcode result = CURLE_OK;
-
-#ifdef HAVE_LIBSSH2_KNOWNHOST_API
- struct Curl_easy *data = conn->data;
-
- if(data->set.str[STRING_SSH_KNOWNHOSTS]) {
- /* we're asked to verify the host against a file */
- struct ssh_conn *sshc = &conn->proto.sshc;
- int rc;
- int keytype;
- size_t keylen;
- const char *remotekey = libssh2_session_hostkey(sshc->ssh_session,
- &keylen, &keytype);
- int keycheck = LIBSSH2_KNOWNHOST_CHECK_FAILURE;
- int keybit = 0;
-
- if(remotekey) {
- /*
- * A subject to figure out is what host name we need to pass in here.
- * What host name does OpenSSH store in its file if an IDN name is
- * used?
- */
- struct libssh2_knownhost *host;
- enum curl_khmatch keymatch;
- curl_sshkeycallback func =
- data->set.ssh_keyfunc?data->set.ssh_keyfunc:sshkeycallback;
- struct curl_khkey knownkey;
- struct curl_khkey *knownkeyp = NULL;
- struct curl_khkey foundkey;
-
- keybit = (keytype == LIBSSH2_HOSTKEY_TYPE_RSA)?
- LIBSSH2_KNOWNHOST_KEY_SSHRSA:LIBSSH2_KNOWNHOST_KEY_SSHDSS;
-
-#ifdef HAVE_LIBSSH2_KNOWNHOST_CHECKP
- keycheck = libssh2_knownhost_checkp(sshc->kh,
- conn->host.name,
- (conn->remote_port != PORT_SSH)?
- conn->remote_port:-1,
- remotekey, keylen,
- LIBSSH2_KNOWNHOST_TYPE_PLAIN|
- LIBSSH2_KNOWNHOST_KEYENC_RAW|
- keybit,
- &host);
-#else
- keycheck = libssh2_knownhost_check(sshc->kh,
- conn->host.name,
- remotekey, keylen,
- LIBSSH2_KNOWNHOST_TYPE_PLAIN|
- LIBSSH2_KNOWNHOST_KEYENC_RAW|
- keybit,
- &host);
-#endif
-
- infof(data, "SSH host check: %d, key: %s\n", keycheck,
- (keycheck <= LIBSSH2_KNOWNHOST_CHECK_MISMATCH)?
- host->key:"<none>");
-
- /* setup 'knownkey' */
- if(keycheck <= LIBSSH2_KNOWNHOST_CHECK_MISMATCH) {
- knownkey.key = host->key;
- knownkey.len = 0;
- knownkey.keytype = (keytype == LIBSSH2_HOSTKEY_TYPE_RSA)?
- CURLKHTYPE_RSA : CURLKHTYPE_DSS;
- knownkeyp = &knownkey;
- }
-
- /* setup 'foundkey' */
- foundkey.key = remotekey;
- foundkey.len = keylen;
- foundkey.keytype = (keytype == LIBSSH2_HOSTKEY_TYPE_RSA)?
- CURLKHTYPE_RSA : CURLKHTYPE_DSS;
-
- /*
- * if any of the LIBSSH2_KNOWNHOST_CHECK_* defines and the
- * curl_khmatch enum are ever modified, we need to introduce a
- * translation table here!
- */
- keymatch = (enum curl_khmatch)keycheck;
-
- /* Ask the callback how to behave */
- Curl_set_in_callback(data, true);
- rc = func(data, knownkeyp, /* from the knownhosts file */
- &foundkey, /* from the remote host */
- keymatch, data->set.ssh_keyfunc_userp);
- Curl_set_in_callback(data, false);
- }
- else
- /* no remotekey means failure! */
- rc = CURLKHSTAT_REJECT;
-
- switch(rc) {
- default: /* unknown return codes will equal reject */
- /* FALLTHROUGH */
- case CURLKHSTAT_REJECT:
- state(conn, SSH_SESSION_FREE);
- /* FALLTHROUGH */
- case CURLKHSTAT_DEFER:
- /* DEFER means bail out but keep the SSH_HOSTKEY state */
- result = sshc->actualcode = CURLE_PEER_FAILED_VERIFICATION;
- break;
- case CURLKHSTAT_FINE:
- case CURLKHSTAT_FINE_ADD_TO_FILE:
- /* proceed */
- if(keycheck != LIBSSH2_KNOWNHOST_CHECK_MATCH) {
- /* the found host+key didn't match but has been told to be fine
- anyway so we add it in memory */
- int addrc = libssh2_knownhost_add(sshc->kh,
- conn->host.name, NULL,
- remotekey, keylen,
- LIBSSH2_KNOWNHOST_TYPE_PLAIN|
- LIBSSH2_KNOWNHOST_KEYENC_RAW|
- keybit, NULL);
- if(addrc)
- infof(data, "Warning adding the known host %s failed!\n",
- conn->host.name);
- else if(rc == CURLKHSTAT_FINE_ADD_TO_FILE) {
- /* now we write the entire in-memory list of known hosts to the
- known_hosts file */
- int wrc =
- libssh2_knownhost_writefile(sshc->kh,
- data->set.str[STRING_SSH_KNOWNHOSTS],
- LIBSSH2_KNOWNHOST_FILE_OPENSSH);
- if(wrc) {
- infof(data, "Warning, writing %s failed!\n",
- data->set.str[STRING_SSH_KNOWNHOSTS]);
- }
- }
- }
- break;
- }
- }
-#else /* HAVE_LIBSSH2_KNOWNHOST_API */
- (void)conn;
-#endif
- return result;
-}
-
-static CURLcode ssh_check_fingerprint(struct connectdata *conn)
-{
- struct ssh_conn *sshc = &conn->proto.sshc;
- struct Curl_easy *data = conn->data;
- const char *pubkey_md5 = data->set.str[STRING_SSH_HOST_PUBLIC_KEY_MD5];
- char md5buffer[33];
-
- const char *fingerprint = libssh2_hostkey_hash(sshc->ssh_session,
- LIBSSH2_HOSTKEY_HASH_MD5);
-
- if(fingerprint) {
- /* The fingerprint points to static storage (!), don't free() it. */
- int i;
- for(i = 0; i < 16; i++)
- msnprintf(&md5buffer[i*2], 3, "%02x", (unsigned char) fingerprint[i]);
- infof(data, "SSH MD5 fingerprint: %s\n", md5buffer);
- }
-
- /* Before we authenticate we check the hostkey's MD5 fingerprint
- * against a known fingerprint, if available.
- */
- if(pubkey_md5 && strlen(pubkey_md5) == 32) {
- if(!fingerprint || !strcasecompare(md5buffer, pubkey_md5)) {
- if(fingerprint)
- failf(data,
- "Denied establishing ssh session: mismatch md5 fingerprint. "
- "Remote %s is not equal to %s", md5buffer, pubkey_md5);
- else
- failf(data,
- "Denied establishing ssh session: md5 fingerprint not available");
- state(conn, SSH_SESSION_FREE);
- sshc->actualcode = CURLE_PEER_FAILED_VERIFICATION;
- return sshc->actualcode;
- }
- infof(data, "MD5 checksum match!\n");
- /* as we already matched, we skip the check for known hosts */
- return CURLE_OK;
- }
- return ssh_knownhost(conn);
-}
-
-/*
- * ssh_statemach_act() runs the SSH state machine as far as it can without
- * blocking and without reaching the end. The data the pointer 'block' points
- * to will be set to TRUE if the libssh2 function returns LIBSSH2_ERROR_EAGAIN
- * meaning it wants to be called again when the socket is ready
- */
-
-static CURLcode ssh_statemach_act(struct connectdata *conn, bool *block)
-{
- CURLcode result = CURLE_OK;
- struct Curl_easy *data = conn->data;
- struct SSHPROTO *sftp_scp = data->req.protop;
- struct ssh_conn *sshc = &conn->proto.sshc;
- curl_socket_t sock = conn->sock[FIRSTSOCKET];
- char *new_readdir_line;
- int rc = LIBSSH2_ERROR_NONE;
- int err;
- int seekerr = CURL_SEEKFUNC_OK;
- *block = 0; /* we're not blocking by default */
-
- do {
-
- switch(sshc->state) {
- case SSH_INIT:
- sshc->secondCreateDirs = 0;
- sshc->nextstate = SSH_NO_STATE;
- sshc->actualcode = CURLE_OK;
-
- /* Set libssh2 to non-blocking, since everything internally is
- non-blocking */
- libssh2_session_set_blocking(sshc->ssh_session, 0);
-
- state(conn, SSH_S_STARTUP);
- /* FALLTHROUGH */
-
- case SSH_S_STARTUP:
- rc = libssh2_session_startup(sshc->ssh_session, (int)sock);
- if(rc == LIBSSH2_ERROR_EAGAIN) {
- break;
- }
- if(rc) {
- char *err_msg = NULL;
- (void)libssh2_session_last_error(sshc->ssh_session, &err_msg, NULL, 0);
- failf(data, "Failure establishing ssh session: %d, %s", rc, err_msg);
-
- state(conn, SSH_SESSION_FREE);
- sshc->actualcode = CURLE_FAILED_INIT;
- break;
- }
-
- state(conn, SSH_HOSTKEY);
-
- /* FALLTHROUGH */
- case SSH_HOSTKEY:
- /*
- * Before we authenticate we should check the hostkey's fingerprint
- * against our known hosts. How that is handled (reading from file,
- * whatever) is up to us.
- */
- result = ssh_check_fingerprint(conn);
- if(!result)
- state(conn, SSH_AUTHLIST);
- /* ssh_check_fingerprint sets state appropriately on error */
- break;
-
- case SSH_AUTHLIST:
- /*
- * Figure out authentication methods
- * NB: As soon as we have provided a username to an openssh server we
- * must never change it later. Thus, always specify the correct username
- * here, even though the libssh2 docs kind of indicate that it should be
- * possible to get a 'generic' list (not user-specific) of authentication
- * methods, presumably with a blank username. That won't work in my
- * experience.
- * So always specify it here.
- */
- sshc->authlist = libssh2_userauth_list(sshc->ssh_session,
- conn->user,
- curlx_uztoui(strlen(conn->user)));
-
- if(!sshc->authlist) {
- if(libssh2_userauth_authenticated(sshc->ssh_session)) {
- sshc->authed = TRUE;
- infof(data, "SSH user accepted with no authentication\n");
- state(conn, SSH_AUTH_DONE);
- break;
- }
- err = libssh2_session_last_errno(sshc->ssh_session);
- if(err == LIBSSH2_ERROR_EAGAIN)
- rc = LIBSSH2_ERROR_EAGAIN;
- else {
- state(conn, SSH_SESSION_FREE);
- sshc->actualcode = libssh2_session_error_to_CURLE(err);
- }
- break;
- }
- infof(data, "SSH authentication methods available: %s\n",
- sshc->authlist);
-
- state(conn, SSH_AUTH_PKEY_INIT);
- break;
-
- case SSH_AUTH_PKEY_INIT:
- /*
- * Check the supported auth types in the order I feel is most secure
- * with the requested type of authentication
- */
- sshc->authed = FALSE;
-
- if((data->set.ssh_auth_types & CURLSSH_AUTH_PUBLICKEY) &&
- (strstr(sshc->authlist, "publickey") != NULL)) {
- bool out_of_memory = FALSE;
-
- sshc->rsa_pub = sshc->rsa = NULL;
-
- if(data->set.str[STRING_SSH_PRIVATE_KEY])
- sshc->rsa = strdup(data->set.str[STRING_SSH_PRIVATE_KEY]);
- else {
- /* To ponder about: should really the lib be messing about with the
- HOME environment variable etc? */
- char *home = curl_getenv("HOME");
-
- /* If no private key file is specified, try some common paths. */
- if(home) {
- /* Try ~/.ssh first. */
- sshc->rsa = aprintf("%s/.ssh/id_rsa", home);
- if(!sshc->rsa)
- out_of_memory = TRUE;
- else if(access(sshc->rsa, R_OK) != 0) {
- Curl_safefree(sshc->rsa);
- sshc->rsa = aprintf("%s/.ssh/id_dsa", home);
- if(!sshc->rsa)
- out_of_memory = TRUE;
- else if(access(sshc->rsa, R_OK) != 0) {
- Curl_safefree(sshc->rsa);
- }
- }
- free(home);
- }
- if(!out_of_memory && !sshc->rsa) {
- /* Nothing found; try the current dir. */
- sshc->rsa = strdup("id_rsa");
- if(sshc->rsa && access(sshc->rsa, R_OK) != 0) {
- Curl_safefree(sshc->rsa);
- sshc->rsa = strdup("id_dsa");
- if(sshc->rsa && access(sshc->rsa, R_OK) != 0) {
- Curl_safefree(sshc->rsa);
- /* Out of guesses. Set to the empty string to avoid
- * surprising info messages. */
- sshc->rsa = strdup("");
- }
- }
- }
- }
-
- /*
- * Unless the user explicitly specifies a public key file, let
- * libssh2 extract the public key from the private key file.
- * This is done by simply passing sshc->rsa_pub = NULL.
- */
- if(data->set.str[STRING_SSH_PUBLIC_KEY]
- /* treat empty string the same way as NULL */
- && data->set.str[STRING_SSH_PUBLIC_KEY][0]) {
- sshc->rsa_pub = strdup(data->set.str[STRING_SSH_PUBLIC_KEY]);
- if(!sshc->rsa_pub)
- out_of_memory = TRUE;
- }
-
- if(out_of_memory || sshc->rsa == NULL) {
- Curl_safefree(sshc->rsa);
- Curl_safefree(sshc->rsa_pub);
- state(conn, SSH_SESSION_FREE);
- sshc->actualcode = CURLE_OUT_OF_MEMORY;
- break;
- }
-
- sshc->passphrase = data->set.ssl.key_passwd;
- if(!sshc->passphrase)
- sshc->passphrase = "";
-
- if(sshc->rsa_pub)
- infof(data, "Using SSH public key file '%s'\n", sshc->rsa_pub);
- infof(data, "Using SSH private key file '%s'\n", sshc->rsa);
-
- state(conn, SSH_AUTH_PKEY);
- }
- else {
- state(conn, SSH_AUTH_PASS_INIT);
- }
- break;
-
- case SSH_AUTH_PKEY:
- /* The function below checks if the files exists, no need to stat() here.
- */
- rc = libssh2_userauth_publickey_fromfile_ex(sshc->ssh_session,
- conn->user,
- curlx_uztoui(
- strlen(conn->user)),
- sshc->rsa_pub,
- sshc->rsa, sshc->passphrase);
- if(rc == LIBSSH2_ERROR_EAGAIN) {
- break;
- }
-
- Curl_safefree(sshc->rsa_pub);
- Curl_safefree(sshc->rsa);
-
- if(rc == 0) {
- sshc->authed = TRUE;
- infof(data, "Initialized SSH public key authentication\n");
- state(conn, SSH_AUTH_DONE);
- }
- else {
- char *err_msg = NULL;
- (void)libssh2_session_last_error(sshc->ssh_session,
- &err_msg, NULL, 0);
- infof(data, "SSH public key authentication failed: %s\n", err_msg);
- state(conn, SSH_AUTH_PASS_INIT);
- rc = 0; /* clear rc and continue */
- }
- break;
-
- case SSH_AUTH_PASS_INIT:
- if((data->set.ssh_auth_types & CURLSSH_AUTH_PASSWORD) &&
- (strstr(sshc->authlist, "password") != NULL)) {
- state(conn, SSH_AUTH_PASS);
- }
- else {
- state(conn, SSH_AUTH_HOST_INIT);
- rc = 0; /* clear rc and continue */
- }
- break;
-
- case SSH_AUTH_PASS:
- rc = libssh2_userauth_password_ex(sshc->ssh_session, conn->user,
- curlx_uztoui(strlen(conn->user)),
- conn->passwd,
- curlx_uztoui(strlen(conn->passwd)),
- NULL);
- if(rc == LIBSSH2_ERROR_EAGAIN) {
- break;
- }
- if(rc == 0) {
- sshc->authed = TRUE;
- infof(data, "Initialized password authentication\n");
- state(conn, SSH_AUTH_DONE);
- }
- else {
- state(conn, SSH_AUTH_HOST_INIT);
- rc = 0; /* clear rc and continue */
- }
- break;
-
- case SSH_AUTH_HOST_INIT:
- if((data->set.ssh_auth_types & CURLSSH_AUTH_HOST) &&
- (strstr(sshc->authlist, "hostbased") != NULL)) {
- state(conn, SSH_AUTH_HOST);
- }
- else {
- state(conn, SSH_AUTH_AGENT_INIT);
- }
- break;
-
- case SSH_AUTH_HOST:
- state(conn, SSH_AUTH_AGENT_INIT);
- break;
-
- case SSH_AUTH_AGENT_INIT:
-#ifdef HAVE_LIBSSH2_AGENT_API
- if((data->set.ssh_auth_types & CURLSSH_AUTH_AGENT)
- && (strstr(sshc->authlist, "publickey") != NULL)) {
-
- /* Connect to the ssh-agent */
- /* The agent could be shared by a curl thread i believe
- but nothing obvious as keys can be added/removed at any time */
- if(!sshc->ssh_agent) {
- sshc->ssh_agent = libssh2_agent_init(sshc->ssh_session);
- if(!sshc->ssh_agent) {
- infof(data, "Could not create agent object\n");
-
- state(conn, SSH_AUTH_KEY_INIT);
- break;
- }
- }
-
- rc = libssh2_agent_connect(sshc->ssh_agent);
- if(rc == LIBSSH2_ERROR_EAGAIN)
- break;
- if(rc < 0) {
- infof(data, "Failure connecting to agent\n");
- state(conn, SSH_AUTH_KEY_INIT);
- rc = 0; /* clear rc and continue */
- }
- else {
- state(conn, SSH_AUTH_AGENT_LIST);
- }
- }
- else
-#endif /* HAVE_LIBSSH2_AGENT_API */
- state(conn, SSH_AUTH_KEY_INIT);
- break;
-
- case SSH_AUTH_AGENT_LIST:
-#ifdef HAVE_LIBSSH2_AGENT_API
- rc = libssh2_agent_list_identities(sshc->ssh_agent);
-
- if(rc == LIBSSH2_ERROR_EAGAIN)
- break;
- if(rc < 0) {
- infof(data, "Failure requesting identities to agent\n");
- state(conn, SSH_AUTH_KEY_INIT);
- rc = 0; /* clear rc and continue */
- }
- else {
- state(conn, SSH_AUTH_AGENT);
- sshc->sshagent_prev_identity = NULL;
- }
-#endif
- break;
-
- case SSH_AUTH_AGENT:
-#ifdef HAVE_LIBSSH2_AGENT_API
- /* as prev_identity evolves only after an identity user auth finished we
- can safely request it again as long as EAGAIN is returned here or by
- libssh2_agent_userauth */
- rc = libssh2_agent_get_identity(sshc->ssh_agent,
- &sshc->sshagent_identity,
- sshc->sshagent_prev_identity);
- if(rc == LIBSSH2_ERROR_EAGAIN)
- break;
-
- if(rc == 0) {
- rc = libssh2_agent_userauth(sshc->ssh_agent, conn->user,
- sshc->sshagent_identity);
-
- if(rc < 0) {
- if(rc != LIBSSH2_ERROR_EAGAIN) {
- /* tried and failed? go to next identity */
- sshc->sshagent_prev_identity = sshc->sshagent_identity;
- }
- break;
- }
- }
-
- if(rc < 0)
- infof(data, "Failure requesting identities to agent\n");
- else if(rc == 1)
- infof(data, "No identity would match\n");
-
- if(rc == LIBSSH2_ERROR_NONE) {
- sshc->authed = TRUE;
- infof(data, "Agent based authentication successful\n");
- state(conn, SSH_AUTH_DONE);
- }
- else {
- state(conn, SSH_AUTH_KEY_INIT);
- rc = 0; /* clear rc and continue */
- }
-#endif
- break;
-
- case SSH_AUTH_KEY_INIT:
- if((data->set.ssh_auth_types & CURLSSH_AUTH_KEYBOARD)
- && (strstr(sshc->authlist, "keyboard-interactive") != NULL)) {
- state(conn, SSH_AUTH_KEY);
- }
- else {
- state(conn, SSH_AUTH_DONE);
- }
- break;
-
- case SSH_AUTH_KEY:
- /* Authentication failed. Continue with keyboard-interactive now. */
- rc = libssh2_userauth_keyboard_interactive_ex(sshc->ssh_session,
- conn->user,
- curlx_uztoui(
- strlen(conn->user)),
- &kbd_callback);
- if(rc == LIBSSH2_ERROR_EAGAIN) {
- break;
- }
- if(rc == 0) {
- sshc->authed = TRUE;
- infof(data, "Initialized keyboard interactive authentication\n");
- }
- state(conn, SSH_AUTH_DONE);
- break;
-
- case SSH_AUTH_DONE:
- if(!sshc->authed) {
- failf(data, "Authentication failure");
- state(conn, SSH_SESSION_FREE);
- sshc->actualcode = CURLE_LOGIN_DENIED;
- break;
- }
-
- /*
- * At this point we have an authenticated ssh session.
- */
- infof(data, "Authentication complete\n");
-
- Curl_pgrsTime(conn->data, TIMER_APPCONNECT); /* SSH is connected */
-
- conn->sockfd = sock;
- conn->writesockfd = CURL_SOCKET_BAD;
-
- if(conn->handler->protocol == CURLPROTO_SFTP) {
- state(conn, SSH_SFTP_INIT);
- break;
- }
- infof(data, "SSH CONNECT phase done\n");
- state(conn, SSH_STOP);
- break;
-
- case SSH_SFTP_INIT:
- /*
- * Start the libssh2 sftp session
- */
- sshc->sftp_session = libssh2_sftp_init(sshc->ssh_session);
- if(!sshc->sftp_session) {
- char *err_msg = NULL;
- if(libssh2_session_last_errno(sshc->ssh_session) ==
- LIBSSH2_ERROR_EAGAIN) {
- rc = LIBSSH2_ERROR_EAGAIN;
- break;
- }
-
- (void)libssh2_session_last_error(sshc->ssh_session,
- &err_msg, NULL, 0);
- failf(data, "Failure initializing sftp session: %s", err_msg);
- state(conn, SSH_SESSION_FREE);
- sshc->actualcode = CURLE_FAILED_INIT;
- break;
- }
- state(conn, SSH_SFTP_REALPATH);
- break;
-
- case SSH_SFTP_REALPATH:
- {
- char tempHome[PATH_MAX];
-
- /*
- * Get the "home" directory
- */
- rc = sftp_libssh2_realpath(sshc->sftp_session, ".",
- tempHome, PATH_MAX-1);
- if(rc == LIBSSH2_ERROR_EAGAIN) {
- break;
- }
- if(rc > 0) {
- /* It seems that this string is not always NULL terminated */
- tempHome[rc] = '\0';
- sshc->homedir = strdup(tempHome);
- if(!sshc->homedir) {
- state(conn, SSH_SFTP_CLOSE);
- sshc->actualcode = CURLE_OUT_OF_MEMORY;
- break;
- }
- conn->data->state.most_recent_ftp_entrypath = sshc->homedir;
- }
- else {
- /* Return the error type */
- err = sftp_libssh2_last_error(sshc->sftp_session);
- if(err)
- result = sftp_libssh2_error_to_CURLE(err);
- else
- /* in this case, the error wasn't in the SFTP level but for example
- a time-out or similar */
- result = CURLE_SSH;
- sshc->actualcode = result;
- DEBUGF(infof(data, "error = %d makes libcurl = %d\n",
- err, (int)result));
- state(conn, SSH_STOP);
- break;
- }
- }
- /* This is the last step in the SFTP connect phase. Do note that while
- we get the homedir here, we get the "workingpath" in the DO action
- since the homedir will remain the same between request but the
- working path will not. */
- DEBUGF(infof(data, "SSH CONNECT phase done\n"));
- state(conn, SSH_STOP);
- break;
-
- case SSH_SFTP_QUOTE_INIT:
-
- result = Curl_getworkingpath(conn, sshc->homedir, &sftp_scp->path);
- if(result) {
- sshc->actualcode = result;
- state(conn, SSH_STOP);
- break;
- }
-
- if(data->set.quote) {
- infof(data, "Sending quote commands\n");
- sshc->quote_item = data->set.quote;
- state(conn, SSH_SFTP_QUOTE);
- }
- else {
- state(conn, SSH_SFTP_GETINFO);
- }
- break;
-
- case SSH_SFTP_POSTQUOTE_INIT:
- if(data->set.postquote) {
- infof(data, "Sending quote commands\n");
- sshc->quote_item = data->set.postquote;
- state(conn, SSH_SFTP_QUOTE);
- }
- else {
- state(conn, SSH_STOP);
- }
- break;
-
- case SSH_SFTP_QUOTE:
- /* Send any quote commands */
- {
- const char *cp;
-
- /*
- * Support some of the "FTP" commands
- *
- * 'sshc->quote_item' is already verified to be non-NULL before it
- * switched to this state.
- */
- char *cmd = sshc->quote_item->data;
- sshc->acceptfail = FALSE;
-
- /* if a command starts with an asterisk, which a legal SFTP command never
- can, the command will be allowed to fail without it causing any
- aborts or cancels etc. It will cause libcurl to act as if the command
- is successful, whatever the server reponds. */
-
- if(cmd[0] == '*') {
- cmd++;
- sshc->acceptfail = TRUE;
- }
-
- if(strcasecompare("pwd", cmd)) {
- /* output debug output if that is requested */
- char *tmp = aprintf("257 \"%s\" is current directory.\n",
- sftp_scp->path);
- if(!tmp) {
- result = CURLE_OUT_OF_MEMORY;
- state(conn, SSH_SFTP_CLOSE);
- sshc->nextstate = SSH_NO_STATE;
- break;
- }
- if(data->set.verbose) {
- Curl_debug(data, CURLINFO_HEADER_OUT, (char *)"PWD\n", 4);
- Curl_debug(data, CURLINFO_HEADER_IN, tmp, strlen(tmp));
- }
- /* this sends an FTP-like "header" to the header callback so that the
- current directory can be read very similar to how it is read when
- using ordinary FTP. */
- result = Curl_client_write(conn, CLIENTWRITE_HEADER, tmp, strlen(tmp));
- free(tmp);
- if(result) {
- state(conn, SSH_SFTP_CLOSE);
- sshc->nextstate = SSH_NO_STATE;
- sshc->actualcode = result;
- }
- else
- state(conn, SSH_SFTP_NEXT_QUOTE);
- break;
- }
- {
- /*
- * the arguments following the command must be separated from the
- * command with a space so we can check for it unconditionally
- */
- cp = strchr(cmd, ' ');
- if(cp == NULL) {
- failf(data, "Syntax error in SFTP command. Supply parameter(s)!");
- state(conn, SSH_SFTP_CLOSE);
- sshc->nextstate = SSH_NO_STATE;
- sshc->actualcode = CURLE_QUOTE_ERROR;
- break;
- }
-
- /*
- * also, every command takes at least one argument so we get that
- * first argument right now
- */
- result = Curl_get_pathname(&cp, &sshc->quote_path1, sshc->homedir);
- if(result) {
- if(result == CURLE_OUT_OF_MEMORY)
- failf(data, "Out of memory");
- else
- failf(data, "Syntax error: Bad first parameter");
- state(conn, SSH_SFTP_CLOSE);
- sshc->nextstate = SSH_NO_STATE;
- sshc->actualcode = result;
- break;
- }
-
- /*
- * SFTP is a binary protocol, so we don't send text commands
- * to the server. Instead, we scan for commands used by
- * OpenSSH's sftp program and call the appropriate libssh2
- * functions.
- */
- if(strncasecompare(cmd, "chgrp ", 6) ||
- strncasecompare(cmd, "chmod ", 6) ||
- strncasecompare(cmd, "chown ", 6) ) {
- /* attribute change */
-
- /* sshc->quote_path1 contains the mode to set */
- /* get the destination */
- result = Curl_get_pathname(&cp, &sshc->quote_path2, sshc->homedir);
- if(result) {
- if(result == CURLE_OUT_OF_MEMORY)
- failf(data, "Out of memory");
- else
- failf(data, "Syntax error in chgrp/chmod/chown: "
- "Bad second parameter");
- Curl_safefree(sshc->quote_path1);
- state(conn, SSH_SFTP_CLOSE);
- sshc->nextstate = SSH_NO_STATE;
- sshc->actualcode = result;
- break;
- }
- memset(&sshc->quote_attrs, 0, sizeof(LIBSSH2_SFTP_ATTRIBUTES));
- state(conn, SSH_SFTP_QUOTE_STAT);
- break;
- }
- if(strncasecompare(cmd, "ln ", 3) ||
- strncasecompare(cmd, "symlink ", 8)) {
- /* symbolic linking */
- /* sshc->quote_path1 is the source */
- /* get the destination */
- result = Curl_get_pathname(&cp, &sshc->quote_path2, sshc->homedir);
- if(result) {
- if(result == CURLE_OUT_OF_MEMORY)
- failf(data, "Out of memory");
- else
- failf(data,
- "Syntax error in ln/symlink: Bad second parameter");
- Curl_safefree(sshc->quote_path1);
- state(conn, SSH_SFTP_CLOSE);
- sshc->nextstate = SSH_NO_STATE;
- sshc->actualcode = result;
- break;
- }
- state(conn, SSH_SFTP_QUOTE_SYMLINK);
- break;
- }
- else if(strncasecompare(cmd, "mkdir ", 6)) {
- /* create dir */
- state(conn, SSH_SFTP_QUOTE_MKDIR);
- break;
- }
- else if(strncasecompare(cmd, "rename ", 7)) {
- /* rename file */
- /* first param is the source path */
- /* second param is the dest. path */
- result = Curl_get_pathname(&cp, &sshc->quote_path2, sshc->homedir);
- if(result) {
- if(result == CURLE_OUT_OF_MEMORY)
- failf(data, "Out of memory");
- else
- failf(data, "Syntax error in rename: Bad second parameter");
- Curl_safefree(sshc->quote_path1);
- state(conn, SSH_SFTP_CLOSE);
- sshc->nextstate = SSH_NO_STATE;
- sshc->actualcode = result;
- break;
- }
- state(conn, SSH_SFTP_QUOTE_RENAME);
- break;
- }
- else if(strncasecompare(cmd, "rmdir ", 6)) {
- /* delete dir */
- state(conn, SSH_SFTP_QUOTE_RMDIR);
- break;
- }
- else if(strncasecompare(cmd, "rm ", 3)) {
- state(conn, SSH_SFTP_QUOTE_UNLINK);
- break;
- }
-#ifdef HAS_STATVFS_SUPPORT
- else if(strncasecompare(cmd, "statvfs ", 8)) {
- state(conn, SSH_SFTP_QUOTE_STATVFS);
- break;
- }
-#endif
-
- failf(data, "Unknown SFTP command");
- Curl_safefree(sshc->quote_path1);
- Curl_safefree(sshc->quote_path2);
- state(conn, SSH_SFTP_CLOSE);
- sshc->nextstate = SSH_NO_STATE;
- sshc->actualcode = CURLE_QUOTE_ERROR;
- break;
- }
- }
- break;
-
- case SSH_SFTP_NEXT_QUOTE:
- Curl_safefree(sshc->quote_path1);
- Curl_safefree(sshc->quote_path2);
-
- sshc->quote_item = sshc->quote_item->next;
-
- if(sshc->quote_item) {
- state(conn, SSH_SFTP_QUOTE);
- }
- else {
- if(sshc->nextstate != SSH_NO_STATE) {
- state(conn, sshc->nextstate);
- sshc->nextstate = SSH_NO_STATE;
- }
- else {
- state(conn, SSH_SFTP_GETINFO);
- }
- }
- break;
-
- case SSH_SFTP_QUOTE_STAT:
- {
- char *cmd = sshc->quote_item->data;
- sshc->acceptfail = FALSE;
-
- /* if a command starts with an asterisk, which a legal SFTP command never
- can, the command will be allowed to fail without it causing any
- aborts or cancels etc. It will cause libcurl to act as if the command
- is successful, whatever the server reponds. */
-
- if(cmd[0] == '*') {
- cmd++;
- sshc->acceptfail = TRUE;
- }
-
- if(!strncasecompare(cmd, "chmod", 5)) {
- /* Since chown and chgrp only set owner OR group but libssh2 wants to
- * set them both at once, we need to obtain the current ownership
- * first. This takes an extra protocol round trip.
- */
- rc = libssh2_sftp_stat_ex(sshc->sftp_session, sshc->quote_path2,
- curlx_uztoui(strlen(sshc->quote_path2)),
- LIBSSH2_SFTP_STAT,
- &sshc->quote_attrs);
- if(rc == LIBSSH2_ERROR_EAGAIN) {
- break;
- }
- if(rc != 0 && !sshc->acceptfail) { /* get those attributes */
- err = sftp_libssh2_last_error(sshc->sftp_session);
- Curl_safefree(sshc->quote_path1);
- Curl_safefree(sshc->quote_path2);
- failf(data, "Attempt to get SFTP stats failed: %s",
- sftp_libssh2_strerror(err));
- state(conn, SSH_SFTP_CLOSE);
- sshc->nextstate = SSH_NO_STATE;
- sshc->actualcode = CURLE_QUOTE_ERROR;
- break;
- }
- }
-
- /* Now set the new attributes... */
- if(strncasecompare(cmd, "chgrp", 5)) {
- sshc->quote_attrs.gid = strtoul(sshc->quote_path1, NULL, 10);
- sshc->quote_attrs.flags = LIBSSH2_SFTP_ATTR_UIDGID;
- if(sshc->quote_attrs.gid == 0 && !ISDIGIT(sshc->quote_path1[0]) &&
- !sshc->acceptfail) {
- Curl_safefree(sshc->quote_path1);
- Curl_safefree(sshc->quote_path2);
- failf(data, "Syntax error: chgrp gid not a number");
- state(conn, SSH_SFTP_CLOSE);
- sshc->nextstate = SSH_NO_STATE;
- sshc->actualcode = CURLE_QUOTE_ERROR;
- break;
- }
- }
- else if(strncasecompare(cmd, "chmod", 5)) {
- sshc->quote_attrs.permissions = strtoul(sshc->quote_path1, NULL, 8);
- sshc->quote_attrs.flags = LIBSSH2_SFTP_ATTR_PERMISSIONS;
- /* permissions are octal */
- if(sshc->quote_attrs.permissions == 0 &&
- !ISDIGIT(sshc->quote_path1[0])) {
- Curl_safefree(sshc->quote_path1);
- Curl_safefree(sshc->quote_path2);
- failf(data, "Syntax error: chmod permissions not a number");
- state(conn, SSH_SFTP_CLOSE);
- sshc->nextstate = SSH_NO_STATE;
- sshc->actualcode = CURLE_QUOTE_ERROR;
- break;
- }
- }
- else if(strncasecompare(cmd, "chown", 5)) {
- sshc->quote_attrs.uid = strtoul(sshc->quote_path1, NULL, 10);
- sshc->quote_attrs.flags = LIBSSH2_SFTP_ATTR_UIDGID;
- if(sshc->quote_attrs.uid == 0 && !ISDIGIT(sshc->quote_path1[0]) &&
- !sshc->acceptfail) {
- Curl_safefree(sshc->quote_path1);
- Curl_safefree(sshc->quote_path2);
- failf(data, "Syntax error: chown uid not a number");
- state(conn, SSH_SFTP_CLOSE);
- sshc->nextstate = SSH_NO_STATE;
- sshc->actualcode = CURLE_QUOTE_ERROR;
- break;
- }
- }
-
- /* Now send the completed structure... */
- state(conn, SSH_SFTP_QUOTE_SETSTAT);
- break;
- }
-
- case SSH_SFTP_QUOTE_SETSTAT:
- rc = libssh2_sftp_stat_ex(sshc->sftp_session, sshc->quote_path2,
- curlx_uztoui(strlen(sshc->quote_path2)),
- LIBSSH2_SFTP_SETSTAT,
- &sshc->quote_attrs);
- if(rc == LIBSSH2_ERROR_EAGAIN) {
- break;
- }
- if(rc != 0 && !sshc->acceptfail) {
- err = sftp_libssh2_last_error(sshc->sftp_session);
- Curl_safefree(sshc->quote_path1);
- Curl_safefree(sshc->quote_path2);
- failf(data, "Attempt to set SFTP stats failed: %s",
- sftp_libssh2_strerror(err));
- state(conn, SSH_SFTP_CLOSE);
- sshc->nextstate = SSH_NO_STATE;
- sshc->actualcode = CURLE_QUOTE_ERROR;
- break;
- }
- state(conn, SSH_SFTP_NEXT_QUOTE);
- break;
-
- case SSH_SFTP_QUOTE_SYMLINK:
- rc = libssh2_sftp_symlink_ex(sshc->sftp_session, sshc->quote_path1,
- curlx_uztoui(strlen(sshc->quote_path1)),
- sshc->quote_path2,
- curlx_uztoui(strlen(sshc->quote_path2)),
- LIBSSH2_SFTP_SYMLINK);
- if(rc == LIBSSH2_ERROR_EAGAIN) {
- break;
- }
- if(rc != 0 && !sshc->acceptfail) {
- err = sftp_libssh2_last_error(sshc->sftp_session);
- Curl_safefree(sshc->quote_path1);
- Curl_safefree(sshc->quote_path2);
- failf(data, "symlink command failed: %s",
- sftp_libssh2_strerror(err));
- state(conn, SSH_SFTP_CLOSE);
- sshc->nextstate = SSH_NO_STATE;
- sshc->actualcode = CURLE_QUOTE_ERROR;
- break;
- }
- state(conn, SSH_SFTP_NEXT_QUOTE);
- break;
-
- case SSH_SFTP_QUOTE_MKDIR:
- rc = libssh2_sftp_mkdir_ex(sshc->sftp_session, sshc->quote_path1,
- curlx_uztoui(strlen(sshc->quote_path1)),
- data->set.new_directory_perms);
- if(rc == LIBSSH2_ERROR_EAGAIN) {
- break;
- }
- if(rc != 0 && !sshc->acceptfail) {
- err = sftp_libssh2_last_error(sshc->sftp_session);
- Curl_safefree(sshc->quote_path1);
- failf(data, "mkdir command failed: %s", sftp_libssh2_strerror(err));
- state(conn, SSH_SFTP_CLOSE);
- sshc->nextstate = SSH_NO_STATE;
- sshc->actualcode = CURLE_QUOTE_ERROR;
- break;
- }
- state(conn, SSH_SFTP_NEXT_QUOTE);
- break;
-
- case SSH_SFTP_QUOTE_RENAME:
- rc = libssh2_sftp_rename_ex(sshc->sftp_session, sshc->quote_path1,
- curlx_uztoui(strlen(sshc->quote_path1)),
- sshc->quote_path2,
- curlx_uztoui(strlen(sshc->quote_path2)),
- LIBSSH2_SFTP_RENAME_OVERWRITE |
- LIBSSH2_SFTP_RENAME_ATOMIC |
- LIBSSH2_SFTP_RENAME_NATIVE);
-
- if(rc == LIBSSH2_ERROR_EAGAIN) {
- break;
- }
- if(rc != 0 && !sshc->acceptfail) {
- err = sftp_libssh2_last_error(sshc->sftp_session);
- Curl_safefree(sshc->quote_path1);
- Curl_safefree(sshc->quote_path2);
- failf(data, "rename command failed: %s", sftp_libssh2_strerror(err));
- state(conn, SSH_SFTP_CLOSE);
- sshc->nextstate = SSH_NO_STATE;
- sshc->actualcode = CURLE_QUOTE_ERROR;
- break;
- }
- state(conn, SSH_SFTP_NEXT_QUOTE);
- break;
-
- case SSH_SFTP_QUOTE_RMDIR:
- rc = libssh2_sftp_rmdir_ex(sshc->sftp_session, sshc->quote_path1,
- curlx_uztoui(strlen(sshc->quote_path1)));
- if(rc == LIBSSH2_ERROR_EAGAIN) {
- break;
- }
- if(rc != 0 && !sshc->acceptfail) {
- err = sftp_libssh2_last_error(sshc->sftp_session);
- Curl_safefree(sshc->quote_path1);
- failf(data, "rmdir command failed: %s", sftp_libssh2_strerror(err));
- state(conn, SSH_SFTP_CLOSE);
- sshc->nextstate = SSH_NO_STATE;
- sshc->actualcode = CURLE_QUOTE_ERROR;
- break;
- }
- state(conn, SSH_SFTP_NEXT_QUOTE);
- break;
-
- case SSH_SFTP_QUOTE_UNLINK:
- rc = libssh2_sftp_unlink_ex(sshc->sftp_session, sshc->quote_path1,
- curlx_uztoui(strlen(sshc->quote_path1)));
- if(rc == LIBSSH2_ERROR_EAGAIN) {
- break;
- }
- if(rc != 0 && !sshc->acceptfail) {
- err = sftp_libssh2_last_error(sshc->sftp_session);
- Curl_safefree(sshc->quote_path1);
- failf(data, "rm command failed: %s", sftp_libssh2_strerror(err));
- state(conn, SSH_SFTP_CLOSE);
- sshc->nextstate = SSH_NO_STATE;
- sshc->actualcode = CURLE_QUOTE_ERROR;
- break;
- }
- state(conn, SSH_SFTP_NEXT_QUOTE);
- break;
-
-#ifdef HAS_STATVFS_SUPPORT
- case SSH_SFTP_QUOTE_STATVFS:
- {
- LIBSSH2_SFTP_STATVFS statvfs;
- rc = libssh2_sftp_statvfs(sshc->sftp_session, sshc->quote_path1,
- curlx_uztoui(strlen(sshc->quote_path1)),
- &statvfs);
-
- if(rc == LIBSSH2_ERROR_EAGAIN) {
- break;
- }
- if(rc != 0 && !sshc->acceptfail) {
- err = sftp_libssh2_last_error(sshc->sftp_session);
- Curl_safefree(sshc->quote_path1);
- failf(data, "statvfs command failed: %s", sftp_libssh2_strerror(err));
- state(conn, SSH_SFTP_CLOSE);
- sshc->nextstate = SSH_NO_STATE;
- sshc->actualcode = CURLE_QUOTE_ERROR;
- break;
- }
- else if(rc == 0) {
- char *tmp = aprintf("statvfs:\n"
- "f_bsize: %llu\n" "f_frsize: %llu\n"
- "f_blocks: %llu\n" "f_bfree: %llu\n"
- "f_bavail: %llu\n" "f_files: %llu\n"
- "f_ffree: %llu\n" "f_favail: %llu\n"
- "f_fsid: %llu\n" "f_flag: %llu\n"
- "f_namemax: %llu\n",
- statvfs.f_bsize, statvfs.f_frsize,
- statvfs.f_blocks, statvfs.f_bfree,
- statvfs.f_bavail, statvfs.f_files,
- statvfs.f_ffree, statvfs.f_favail,
- statvfs.f_fsid, statvfs.f_flag,
- statvfs.f_namemax);
- if(!tmp) {
- result = CURLE_OUT_OF_MEMORY;
- state(conn, SSH_SFTP_CLOSE);
- sshc->nextstate = SSH_NO_STATE;
- break;
- }
-
- result = Curl_client_write(conn, CLIENTWRITE_HEADER, tmp, strlen(tmp));
- free(tmp);
- if(result) {
- state(conn, SSH_SFTP_CLOSE);
- sshc->nextstate = SSH_NO_STATE;
- sshc->actualcode = result;
- }
- }
- state(conn, SSH_SFTP_NEXT_QUOTE);
- break;
- }
-#endif
- case SSH_SFTP_GETINFO:
- {
- if(data->set.get_filetime) {
- state(conn, SSH_SFTP_FILETIME);
- }
- else {
- state(conn, SSH_SFTP_TRANS_INIT);
- }
- break;
- }
-
- case SSH_SFTP_FILETIME:
- {
- LIBSSH2_SFTP_ATTRIBUTES attrs;
-
- rc = libssh2_sftp_stat_ex(sshc->sftp_session, sftp_scp->path,
- curlx_uztoui(strlen(sftp_scp->path)),
- LIBSSH2_SFTP_STAT, &attrs);
- if(rc == LIBSSH2_ERROR_EAGAIN) {
- break;
- }
- if(rc == 0) {
- data->info.filetime = attrs.mtime;
- }
-
- state(conn, SSH_SFTP_TRANS_INIT);
- break;
- }
-
- case SSH_SFTP_TRANS_INIT:
- if(data->set.upload)
- state(conn, SSH_SFTP_UPLOAD_INIT);
- else {
- if(sftp_scp->path[strlen(sftp_scp->path)-1] == '/')
- state(conn, SSH_SFTP_READDIR_INIT);
- else
- state(conn, SSH_SFTP_DOWNLOAD_INIT);
- }
- break;
-
- case SSH_SFTP_UPLOAD_INIT:
- {
- unsigned long flags;
- /*
- * NOTE!!! libssh2 requires that the destination path is a full path
- * that includes the destination file and name OR ends in a "/"
- * If this is not done the destination file will be named the
- * same name as the last directory in the path.
- */
-
- if(data->state.resume_from != 0) {
- LIBSSH2_SFTP_ATTRIBUTES attrs;
- if(data->state.resume_from < 0) {
- rc = libssh2_sftp_stat_ex(sshc->sftp_session, sftp_scp->path,
- curlx_uztoui(strlen(sftp_scp->path)),
- LIBSSH2_SFTP_STAT, &attrs);
- if(rc == LIBSSH2_ERROR_EAGAIN) {
- break;
- }
- if(rc) {
- data->state.resume_from = 0;
- }
- else {
- curl_off_t size = attrs.filesize;
- if(size < 0) {
- failf(data, "Bad file size (%" CURL_FORMAT_CURL_OFF_T ")", size);
- return CURLE_BAD_DOWNLOAD_RESUME;
- }
- data->state.resume_from = attrs.filesize;
- }
- }
- }
-
- if(data->set.ftp_append)
- /* Try to open for append, but create if nonexisting */
- flags = LIBSSH2_FXF_WRITE|LIBSSH2_FXF_CREAT|LIBSSH2_FXF_APPEND;
- else if(data->state.resume_from > 0)
- /* If we have restart position then open for append */
- flags = LIBSSH2_FXF_WRITE|LIBSSH2_FXF_APPEND;
- else
- /* Clear file before writing (normal behaviour) */
- flags = LIBSSH2_FXF_WRITE|LIBSSH2_FXF_CREAT|LIBSSH2_FXF_TRUNC;
-
- sshc->sftp_handle =
- libssh2_sftp_open_ex(sshc->sftp_session, sftp_scp->path,
- curlx_uztoui(strlen(sftp_scp->path)),
- flags, data->set.new_file_perms,
- LIBSSH2_SFTP_OPENFILE);
-
- if(!sshc->sftp_handle) {
- rc = libssh2_session_last_errno(sshc->ssh_session);
-
- if(LIBSSH2_ERROR_EAGAIN == rc)
- break;
-
- if(LIBSSH2_ERROR_SFTP_PROTOCOL == rc)
- /* only when there was an SFTP protocol error can we extract
- the sftp error! */
- err = sftp_libssh2_last_error(sshc->sftp_session);
- else
- err = -1; /* not an sftp error at all */
-
- if(sshc->secondCreateDirs) {
- state(conn, SSH_SFTP_CLOSE);
- sshc->actualcode = err>= LIBSSH2_FX_OK?
- sftp_libssh2_error_to_CURLE(err):CURLE_SSH;
- failf(data, "Creating the dir/file failed: %s",
- sftp_libssh2_strerror(err));
- break;
- }
- if(((err == LIBSSH2_FX_NO_SUCH_FILE) ||
- (err == LIBSSH2_FX_FAILURE) ||
- (err == LIBSSH2_FX_NO_SUCH_PATH)) &&
- (data->set.ftp_create_missing_dirs &&
- (strlen(sftp_scp->path) > 1))) {
- /* try to create the path remotely */
- rc = 0; /* clear rc and continue */
- sshc->secondCreateDirs = 1;
- state(conn, SSH_SFTP_CREATE_DIRS_INIT);
- break;
- }
- state(conn, SSH_SFTP_CLOSE);
- sshc->actualcode = err>= LIBSSH2_FX_OK?
- sftp_libssh2_error_to_CURLE(err):CURLE_SSH;
- if(!sshc->actualcode) {
- /* Sometimes, for some reason libssh2_sftp_last_error() returns
- zero even though libssh2_sftp_open() failed previously! We need
- to work around that! */
- sshc->actualcode = CURLE_SSH;
- err = -1;
- }
- failf(data, "Upload failed: %s (%d/%d)",
- err>= LIBSSH2_FX_OK?sftp_libssh2_strerror(err):"ssh error",
- err, rc);
- break;
- }
-
- /* If we have a restart point then we need to seek to the correct
- position. */
- if(data->state.resume_from > 0) {
- /* Let's read off the proper amount of bytes from the input. */
- if(conn->seek_func) {
- Curl_set_in_callback(data, true);
- seekerr = conn->seek_func(conn->seek_client, data->state.resume_from,
- SEEK_SET);
- Curl_set_in_callback(data, false);
- }
-
- if(seekerr != CURL_SEEKFUNC_OK) {
- curl_off_t passed = 0;
-
- if(seekerr != CURL_SEEKFUNC_CANTSEEK) {
- failf(data, "Could not seek stream");
- return CURLE_FTP_COULDNT_USE_REST;
- }
- /* seekerr == CURL_SEEKFUNC_CANTSEEK (can't seek to offset) */
- do {
- size_t readthisamountnow =
- (data->state.resume_from - passed > data->set.buffer_size) ?
- (size_t)data->set.buffer_size :
- curlx_sotouz(data->state.resume_from - passed);
-
- size_t actuallyread;
- Curl_set_in_callback(data, true);
- actuallyread = data->state.fread_func(data->state.buffer, 1,
- readthisamountnow,
- data->state.in);
- Curl_set_in_callback(data, false);
-
- passed += actuallyread;
- if((actuallyread == 0) || (actuallyread > readthisamountnow)) {
- /* this checks for greater-than only to make sure that the
- CURL_READFUNC_ABORT return code still aborts */
- failf(data, "Failed to read data");
- return CURLE_FTP_COULDNT_USE_REST;
- }
- } while(passed < data->state.resume_from);
- }
-
- /* now, decrease the size of the read */
- if(data->state.infilesize > 0) {
- data->state.infilesize -= data->state.resume_from;
- data->req.size = data->state.infilesize;
- Curl_pgrsSetUploadSize(data, data->state.infilesize);
- }
-
- SFTP_SEEK(sshc->sftp_handle, data->state.resume_from);
- }
- if(data->state.infilesize > 0) {
- data->req.size = data->state.infilesize;
- Curl_pgrsSetUploadSize(data, data->state.infilesize);
- }
- /* upload data */
- Curl_setup_transfer(data, -1, -1, FALSE, FIRSTSOCKET);
-
- /* not set by Curl_setup_transfer to preserve keepon bits */
- conn->sockfd = conn->writesockfd;
-
- if(result) {
- state(conn, SSH_SFTP_CLOSE);
- sshc->actualcode = result;
- }
- else {
- /* store this original bitmask setup to use later on if we can't
- figure out a "real" bitmask */
- sshc->orig_waitfor = data->req.keepon;
-
- /* we want to use the _sending_ function even when the socket turns
- out readable as the underlying libssh2 sftp send function will deal
- with both accordingly */
- conn->cselect_bits = CURL_CSELECT_OUT;
-
- /* since we don't really wait for anything at this point, we want the
- state machine to move on as soon as possible so we set a very short
- timeout here */
- Curl_expire(data, 0, EXPIRE_RUN_NOW);
-
- state(conn, SSH_STOP);
- }
- break;
- }
-
- case SSH_SFTP_CREATE_DIRS_INIT:
- if(strlen(sftp_scp->path) > 1) {
- sshc->slash_pos = sftp_scp->path + 1; /* ignore the leading '/' */
- state(conn, SSH_SFTP_CREATE_DIRS);
- }
- else {
- state(conn, SSH_SFTP_UPLOAD_INIT);
- }
- break;
-
- case SSH_SFTP_CREATE_DIRS:
- sshc->slash_pos = strchr(sshc->slash_pos, '/');
- if(sshc->slash_pos) {
- *sshc->slash_pos = 0;
-
- infof(data, "Creating directory '%s'\n", sftp_scp->path);
- state(conn, SSH_SFTP_CREATE_DIRS_MKDIR);
- break;
- }
- state(conn, SSH_SFTP_UPLOAD_INIT);
- break;
-
- case SSH_SFTP_CREATE_DIRS_MKDIR:
- /* 'mode' - parameter is preliminary - default to 0644 */
- rc = libssh2_sftp_mkdir_ex(sshc->sftp_session, sftp_scp->path,
- curlx_uztoui(strlen(sftp_scp->path)),
- data->set.new_directory_perms);
- if(rc == LIBSSH2_ERROR_EAGAIN) {
- break;
- }
- *sshc->slash_pos = '/';
- ++sshc->slash_pos;
- if(rc < 0) {
- /*
- * Abort if failure wasn't that the dir already exists or the
- * permission was denied (creation might succeed further down the
- * path) - retry on unspecific FAILURE also
- */
- err = sftp_libssh2_last_error(sshc->sftp_session);
- if((err != LIBSSH2_FX_FILE_ALREADY_EXISTS) &&
- (err != LIBSSH2_FX_FAILURE) &&
- (err != LIBSSH2_FX_PERMISSION_DENIED)) {
- result = sftp_libssh2_error_to_CURLE(err);
- state(conn, SSH_SFTP_CLOSE);
- sshc->actualcode = result?result:CURLE_SSH;
- break;
- }
- rc = 0; /* clear rc and continue */
- }
- state(conn, SSH_SFTP_CREATE_DIRS);
- break;
-
- case SSH_SFTP_READDIR_INIT:
- Curl_pgrsSetDownloadSize(data, -1);
- if(data->set.opt_no_body) {
- state(conn, SSH_STOP);
- break;
- }
-
- /*
- * This is a directory that we are trying to get, so produce a directory
- * listing
- */
- sshc->sftp_handle = libssh2_sftp_open_ex(sshc->sftp_session,
- sftp_scp->path,
- curlx_uztoui(
- strlen(sftp_scp->path)),
- 0, 0, LIBSSH2_SFTP_OPENDIR);
- if(!sshc->sftp_handle) {
- if(libssh2_session_last_errno(sshc->ssh_session) ==
- LIBSSH2_ERROR_EAGAIN) {
- rc = LIBSSH2_ERROR_EAGAIN;
- break;
- }
- err = sftp_libssh2_last_error(sshc->sftp_session);
- failf(data, "Could not open directory for reading: %s",
- sftp_libssh2_strerror(err));
- state(conn, SSH_SFTP_CLOSE);
- result = sftp_libssh2_error_to_CURLE(err);
- sshc->actualcode = result?result:CURLE_SSH;
- break;
- }
- sshc->readdir_filename = malloc(PATH_MAX + 1);
- if(!sshc->readdir_filename) {
- state(conn, SSH_SFTP_CLOSE);
- sshc->actualcode = CURLE_OUT_OF_MEMORY;
- break;
- }
- sshc->readdir_longentry = malloc(PATH_MAX + 1);
- if(!sshc->readdir_longentry) {
- Curl_safefree(sshc->readdir_filename);
- state(conn, SSH_SFTP_CLOSE);
- sshc->actualcode = CURLE_OUT_OF_MEMORY;
- break;
- }
- state(conn, SSH_SFTP_READDIR);
- break;
-
- case SSH_SFTP_READDIR:
- rc = libssh2_sftp_readdir_ex(sshc->sftp_handle,
- sshc->readdir_filename,
- PATH_MAX,
- sshc->readdir_longentry,
- PATH_MAX,
- &sshc->readdir_attrs);
- if(rc == LIBSSH2_ERROR_EAGAIN) {
- break;
- }
- if(rc > 0) {
- sshc->readdir_len = (size_t) rc;
- sshc->readdir_filename[sshc->readdir_len] = '\0';
-
- if(data->set.ftp_list_only) {
- char *tmpLine;
-
- tmpLine = aprintf("%s\n", sshc->readdir_filename);
- if(tmpLine == NULL) {
- state(conn, SSH_SFTP_CLOSE);
- sshc->actualcode = CURLE_OUT_OF_MEMORY;
- break;
- }
- result = Curl_client_write(conn, CLIENTWRITE_BODY,
- tmpLine, sshc->readdir_len + 1);
- free(tmpLine);
-
- if(result) {
- state(conn, SSH_STOP);
- break;
- }
- /* since this counts what we send to the client, we include the
- newline in this counter */
- data->req.bytecount += sshc->readdir_len + 1;
-
- /* output debug output if that is requested */
- if(data->set.verbose) {
- Curl_debug(data, CURLINFO_DATA_OUT, sshc->readdir_filename,
- sshc->readdir_len);
- }
- }
- else {
- sshc->readdir_currLen = strlen(sshc->readdir_longentry);
- sshc->readdir_totalLen = 80 + sshc->readdir_currLen;
- sshc->readdir_line = calloc(sshc->readdir_totalLen, 1);
- if(!sshc->readdir_line) {
- Curl_safefree(sshc->readdir_filename);
- Curl_safefree(sshc->readdir_longentry);
- state(conn, SSH_SFTP_CLOSE);
- sshc->actualcode = CURLE_OUT_OF_MEMORY;
- break;
- }
-
- memcpy(sshc->readdir_line, sshc->readdir_longentry,
- sshc->readdir_currLen);
- if((sshc->readdir_attrs.flags & LIBSSH2_SFTP_ATTR_PERMISSIONS) &&
- ((sshc->readdir_attrs.permissions & LIBSSH2_SFTP_S_IFMT) ==
- LIBSSH2_SFTP_S_IFLNK)) {
- sshc->readdir_linkPath = malloc(PATH_MAX + 1);
- if(sshc->readdir_linkPath == NULL) {
- Curl_safefree(sshc->readdir_filename);
- Curl_safefree(sshc->readdir_longentry);
- state(conn, SSH_SFTP_CLOSE);
- sshc->actualcode = CURLE_OUT_OF_MEMORY;
- break;
- }
-
- msnprintf(sshc->readdir_linkPath, PATH_MAX, "%s%s", sftp_scp->path,
- sshc->readdir_filename);
- state(conn, SSH_SFTP_READDIR_LINK);
- break;
- }
- state(conn, SSH_SFTP_READDIR_BOTTOM);
- break;
- }
- }
- else if(rc == 0) {
- Curl_safefree(sshc->readdir_filename);
- Curl_safefree(sshc->readdir_longentry);
- state(conn, SSH_SFTP_READDIR_DONE);
- break;
- }
- else if(rc < 0) {
- err = sftp_libssh2_last_error(sshc->sftp_session);
- result = sftp_libssh2_error_to_CURLE(err);
- sshc->actualcode = result?result:CURLE_SSH;
- failf(data, "Could not open remote file for reading: %s :: %d",
- sftp_libssh2_strerror(err),
- libssh2_session_last_errno(sshc->ssh_session));
- Curl_safefree(sshc->readdir_filename);
- Curl_safefree(sshc->readdir_longentry);
- state(conn, SSH_SFTP_CLOSE);
- break;
- }
- break;
-
- case SSH_SFTP_READDIR_LINK:
- rc =
- libssh2_sftp_symlink_ex(sshc->sftp_session,
- sshc->readdir_linkPath,
- curlx_uztoui(strlen(sshc->readdir_linkPath)),
- sshc->readdir_filename,
- PATH_MAX, LIBSSH2_SFTP_READLINK);
- if(rc == LIBSSH2_ERROR_EAGAIN) {
- break;
- }
- sshc->readdir_len = (size_t) rc;
- Curl_safefree(sshc->readdir_linkPath);
-
- /* get room for the filename and extra output */
- sshc->readdir_totalLen += 4 + sshc->readdir_len;
- new_readdir_line = Curl_saferealloc(sshc->readdir_line,
- sshc->readdir_totalLen);
- if(!new_readdir_line) {
- sshc->readdir_line = NULL;
- Curl_safefree(sshc->readdir_filename);
- Curl_safefree(sshc->readdir_longentry);
- state(conn, SSH_SFTP_CLOSE);
- sshc->actualcode = CURLE_OUT_OF_MEMORY;
- break;
- }
- sshc->readdir_line = new_readdir_line;
-
- sshc->readdir_currLen += msnprintf(sshc->readdir_line +
- sshc->readdir_currLen,
- sshc->readdir_totalLen -
- sshc->readdir_currLen,
- " -> %s",
- sshc->readdir_filename);
-
- state(conn, SSH_SFTP_READDIR_BOTTOM);
- break;
-
- case SSH_SFTP_READDIR_BOTTOM:
- sshc->readdir_currLen += msnprintf(sshc->readdir_line +
- sshc->readdir_currLen,
- sshc->readdir_totalLen -
- sshc->readdir_currLen, "\n");
- result = Curl_client_write(conn, CLIENTWRITE_BODY,
- sshc->readdir_line,
- sshc->readdir_currLen);
-
- if(!result) {
-
- /* output debug output if that is requested */
- if(data->set.verbose) {
- Curl_debug(data, CURLINFO_DATA_OUT, sshc->readdir_line,
- sshc->readdir_currLen);
- }
- data->req.bytecount += sshc->readdir_currLen;
- }
- Curl_safefree(sshc->readdir_line);
- if(result) {
- state(conn, SSH_STOP);
- }
- else
- state(conn, SSH_SFTP_READDIR);
- break;
-
- case SSH_SFTP_READDIR_DONE:
- if(libssh2_sftp_closedir(sshc->sftp_handle) ==
- LIBSSH2_ERROR_EAGAIN) {
- rc = LIBSSH2_ERROR_EAGAIN;
- break;
- }
- sshc->sftp_handle = NULL;
- Curl_safefree(sshc->readdir_filename);
- Curl_safefree(sshc->readdir_longentry);
-
- /* no data to transfer */
- Curl_setup_transfer(data, -1, -1, FALSE, -1);
- state(conn, SSH_STOP);
- break;
-
- case SSH_SFTP_DOWNLOAD_INIT:
- /*
- * Work on getting the specified file
- */
- sshc->sftp_handle =
- libssh2_sftp_open_ex(sshc->sftp_session, sftp_scp->path,
- curlx_uztoui(strlen(sftp_scp->path)),
- LIBSSH2_FXF_READ, data->set.new_file_perms,
- LIBSSH2_SFTP_OPENFILE);
- if(!sshc->sftp_handle) {
- if(libssh2_session_last_errno(sshc->ssh_session) ==
- LIBSSH2_ERROR_EAGAIN) {
- rc = LIBSSH2_ERROR_EAGAIN;
- break;
- }
- err = sftp_libssh2_last_error(sshc->sftp_session);
- failf(data, "Could not open remote file for reading: %s",
- sftp_libssh2_strerror(err));
- state(conn, SSH_SFTP_CLOSE);
- result = sftp_libssh2_error_to_CURLE(err);
- sshc->actualcode = result?result:CURLE_SSH;
- break;
- }
- state(conn, SSH_SFTP_DOWNLOAD_STAT);
- break;
-
- case SSH_SFTP_DOWNLOAD_STAT:
- {
- LIBSSH2_SFTP_ATTRIBUTES attrs;
-
- rc = libssh2_sftp_stat_ex(sshc->sftp_session, sftp_scp->path,
- curlx_uztoui(strlen(sftp_scp->path)),
- LIBSSH2_SFTP_STAT, &attrs);
- if(rc == LIBSSH2_ERROR_EAGAIN) {
- break;
- }
- if(rc ||
- !(attrs.flags & LIBSSH2_SFTP_ATTR_SIZE) ||
- (attrs.filesize == 0)) {
- /*
- * libssh2_sftp_open() didn't return an error, so maybe the server
- * just doesn't support stat()
- * OR the server doesn't return a file size with a stat()
- * OR file size is 0
- */
- data->req.size = -1;
- data->req.maxdownload = -1;
- Curl_pgrsSetDownloadSize(data, -1);
- }
- else {
- curl_off_t size = attrs.filesize;
-
- if(size < 0) {
- failf(data, "Bad file size (%" CURL_FORMAT_CURL_OFF_T ")", size);
- return CURLE_BAD_DOWNLOAD_RESUME;
- }
- if(conn->data->state.use_range) {
- curl_off_t from, to;
- char *ptr;
- char *ptr2;
- CURLofft to_t;
- CURLofft from_t;
-
- from_t = curlx_strtoofft(conn->data->state.range, &ptr, 0, &from);
- if(from_t == CURL_OFFT_FLOW)
- return CURLE_RANGE_ERROR;
- while(*ptr && (ISSPACE(*ptr) || (*ptr == '-')))
- ptr++;
- to_t = curlx_strtoofft(ptr, &ptr2, 0, &to);
- if(to_t == CURL_OFFT_FLOW)
- return CURLE_RANGE_ERROR;
- if((to_t == CURL_OFFT_INVAL) /* no "to" value given */
- || (to >= size)) {
- to = size - 1;
- }
- if(from_t) {
- /* from is relative to end of file */
- from = size - to;
- to = size - 1;
- }
- if(from > size) {
- failf(data, "Offset (%"
- CURL_FORMAT_CURL_OFF_T ") was beyond file size (%"
- CURL_FORMAT_CURL_OFF_T ")", from, attrs.filesize);
- return CURLE_BAD_DOWNLOAD_RESUME;
- }
- if(from > to) {
- from = to;
- size = 0;
- }
- else {
- size = to - from + 1;
- }
-
- SFTP_SEEK(conn->proto.sshc.sftp_handle, from);
- }
- data->req.size = size;
- data->req.maxdownload = size;
- Curl_pgrsSetDownloadSize(data, size);
- }
-
- /* We can resume if we can seek to the resume position */
- if(data->state.resume_from) {
- if(data->state.resume_from < 0) {
- /* We're supposed to download the last abs(from) bytes */
- if((curl_off_t)attrs.filesize < -data->state.resume_from) {
- failf(data, "Offset (%"
- CURL_FORMAT_CURL_OFF_T ") was beyond file size (%"
- CURL_FORMAT_CURL_OFF_T ")",
- data->state.resume_from, attrs.filesize);
- return CURLE_BAD_DOWNLOAD_RESUME;
- }
- /* download from where? */
- data->state.resume_from += attrs.filesize;
- }
- else {
- if((curl_off_t)attrs.filesize < data->state.resume_from) {
- failf(data, "Offset (%" CURL_FORMAT_CURL_OFF_T
- ") was beyond file size (%" CURL_FORMAT_CURL_OFF_T ")",
- data->state.resume_from, attrs.filesize);
- return CURLE_BAD_DOWNLOAD_RESUME;
- }
- }
- /* Does a completed file need to be seeked and started or closed ? */
- /* Now store the number of bytes we are expected to download */
- data->req.size = attrs.filesize - data->state.resume_from;
- data->req.maxdownload = attrs.filesize - data->state.resume_from;
- Curl_pgrsSetDownloadSize(data,
- attrs.filesize - data->state.resume_from);
- SFTP_SEEK(sshc->sftp_handle, data->state.resume_from);
- }
- }
-
- /* Setup the actual download */
- if(data->req.size == 0) {
- /* no data to transfer */
- Curl_setup_transfer(data, -1, -1, FALSE, -1);
- infof(data, "File already completely downloaded\n");
- state(conn, SSH_STOP);
- break;
- }
- Curl_setup_transfer(data, FIRSTSOCKET, data->req.size, FALSE, -1);
-
- /* not set by Curl_setup_transfer to preserve keepon bits */
- conn->writesockfd = conn->sockfd;
-
- /* we want to use the _receiving_ function even when the socket turns
- out writableable as the underlying libssh2 recv function will deal
- with both accordingly */
- conn->cselect_bits = CURL_CSELECT_IN;
-
- if(result) {
- /* this should never occur; the close state should be entered
- at the time the error occurs */
- state(conn, SSH_SFTP_CLOSE);
- sshc->actualcode = result;
- }
- else {
- state(conn, SSH_STOP);
- }
- break;
-
- case SSH_SFTP_CLOSE:
- if(sshc->sftp_handle) {
- rc = libssh2_sftp_close(sshc->sftp_handle);
- if(rc == LIBSSH2_ERROR_EAGAIN) {
- break;
- }
- if(rc < 0) {
- char *err_msg = NULL;
- (void)libssh2_session_last_error(sshc->ssh_session,
- &err_msg, NULL, 0);
- infof(data, "Failed to close libssh2 file: %d %s\n", rc, err_msg);
- }
- sshc->sftp_handle = NULL;
- }
-
- Curl_safefree(sftp_scp->path);
-
- DEBUGF(infof(data, "SFTP DONE done\n"));
-
- /* Check if nextstate is set and move .nextstate could be POSTQUOTE_INIT
- After nextstate is executed, the control should come back to
- SSH_SFTP_CLOSE to pass the correct result back */
- if(sshc->nextstate != SSH_NO_STATE &&
- sshc->nextstate != SSH_SFTP_CLOSE) {
- state(conn, sshc->nextstate);
- sshc->nextstate = SSH_SFTP_CLOSE;
- }
- else {
- state(conn, SSH_STOP);
- result = sshc->actualcode;
- }
- break;
-
- case SSH_SFTP_SHUTDOWN:
- /* during times we get here due to a broken transfer and then the
- sftp_handle might not have been taken down so make sure that is done
- before we proceed */
-
- if(sshc->sftp_handle) {
- rc = libssh2_sftp_close(sshc->sftp_handle);
- if(rc == LIBSSH2_ERROR_EAGAIN) {
- break;
- }
- if(rc < 0) {
- char *err_msg = NULL;
- (void)libssh2_session_last_error(sshc->ssh_session, &err_msg,
- NULL, 0);
- infof(data, "Failed to close libssh2 file: %d %s\n", rc, err_msg);
- }
- sshc->sftp_handle = NULL;
- }
- if(sshc->sftp_session) {
- rc = libssh2_sftp_shutdown(sshc->sftp_session);
- if(rc == LIBSSH2_ERROR_EAGAIN) {
- break;
- }
- if(rc < 0) {
- infof(data, "Failed to stop libssh2 sftp subsystem\n");
- }
- sshc->sftp_session = NULL;
- }
-
- Curl_safefree(sshc->homedir);
- conn->data->state.most_recent_ftp_entrypath = NULL;
-
- state(conn, SSH_SESSION_DISCONNECT);
- break;
-
- case SSH_SCP_TRANS_INIT:
- result = Curl_getworkingpath(conn, sshc->homedir, &sftp_scp->path);
- if(result) {
- sshc->actualcode = result;
- state(conn, SSH_STOP);
- break;
- }
-
- if(data->set.upload) {
- if(data->state.infilesize < 0) {
- failf(data, "SCP requires a known file size for upload");
- sshc->actualcode = CURLE_UPLOAD_FAILED;
- state(conn, SSH_SCP_CHANNEL_FREE);
- break;
- }
- state(conn, SSH_SCP_UPLOAD_INIT);
- }
- else {
- state(conn, SSH_SCP_DOWNLOAD_INIT);
- }
- break;
-
- case SSH_SCP_UPLOAD_INIT:
- /*
- * libssh2 requires that the destination path is a full path that
- * includes the destination file and name OR ends in a "/" . If this is
- * not done the destination file will be named the same name as the last
- * directory in the path.
- */
- sshc->ssh_channel =
- SCP_SEND(sshc->ssh_session, sftp_scp->path, data->set.new_file_perms,
- data->state.infilesize);
- if(!sshc->ssh_channel) {
- int ssh_err;
- char *err_msg = NULL;
-
- if(libssh2_session_last_errno(sshc->ssh_session) ==
- LIBSSH2_ERROR_EAGAIN) {
- rc = LIBSSH2_ERROR_EAGAIN;
- break;
- }
-
- ssh_err = (int)(libssh2_session_last_error(sshc->ssh_session,
- &err_msg, NULL, 0));
- failf(conn->data, "%s", err_msg);
- state(conn, SSH_SCP_CHANNEL_FREE);
- sshc->actualcode = libssh2_session_error_to_CURLE(ssh_err);
- /* Map generic errors to upload failed */
- if(sshc->actualcode == CURLE_SSH ||
- sshc->actualcode == CURLE_REMOTE_FILE_NOT_FOUND)
- sshc->actualcode = CURLE_UPLOAD_FAILED;
- break;
- }
-
- /* upload data */
- Curl_setup_transfer(data, -1, data->req.size, FALSE, FIRSTSOCKET);
-
- /* not set by Curl_setup_transfer to preserve keepon bits */
- conn->sockfd = conn->writesockfd;
-
- if(result) {
- state(conn, SSH_SCP_CHANNEL_FREE);
- sshc->actualcode = result;
- }
- else {
- /* store this original bitmask setup to use later on if we can't
- figure out a "real" bitmask */
- sshc->orig_waitfor = data->req.keepon;
-
- /* we want to use the _sending_ function even when the socket turns
- out readable as the underlying libssh2 scp send function will deal
- with both accordingly */
- conn->cselect_bits = CURL_CSELECT_OUT;
-
- state(conn, SSH_STOP);
- }
- break;
-
- case SSH_SCP_DOWNLOAD_INIT:
- {
- curl_off_t bytecount;
-
- /*
- * We must check the remote file; if it is a directory no values will
- * be set in sb
- */
-
- /*
- * If support for >2GB files exists, use it.
- */
-
- /* get a fresh new channel from the ssh layer */
-#if LIBSSH2_VERSION_NUM < 0x010700
- struct stat sb;
- memset(&sb, 0, sizeof(struct stat));
- sshc->ssh_channel = libssh2_scp_recv(sshc->ssh_session,
- sftp_scp->path, &sb);
-#else
- libssh2_struct_stat sb;
- memset(&sb, 0, sizeof(libssh2_struct_stat));
- sshc->ssh_channel = libssh2_scp_recv2(sshc->ssh_session,
- sftp_scp->path, &sb);
-#endif
-
- if(!sshc->ssh_channel) {
- int ssh_err;
- char *err_msg = NULL;
-
- if(libssh2_session_last_errno(sshc->ssh_session) ==
- LIBSSH2_ERROR_EAGAIN) {
- rc = LIBSSH2_ERROR_EAGAIN;
- break;
- }
-
-
- ssh_err = (int)(libssh2_session_last_error(sshc->ssh_session,
- &err_msg, NULL, 0));
- failf(conn->data, "%s", err_msg);
- state(conn, SSH_SCP_CHANNEL_FREE);
- sshc->actualcode = libssh2_session_error_to_CURLE(ssh_err);
- break;
- }
-
- /* download data */
- bytecount = (curl_off_t)sb.st_size;
- data->req.maxdownload = (curl_off_t)sb.st_size;
- Curl_setup_transfer(data, FIRSTSOCKET, bytecount, FALSE, -1);
-
- /* not set by Curl_setup_transfer to preserve keepon bits */
- conn->writesockfd = conn->sockfd;
-
- /* we want to use the _receiving_ function even when the socket turns
- out writableable as the underlying libssh2 recv function will deal
- with both accordingly */
- conn->cselect_bits = CURL_CSELECT_IN;
-
- if(result) {
- state(conn, SSH_SCP_CHANNEL_FREE);
- sshc->actualcode = result;
- }
- else
- state(conn, SSH_STOP);
- }
- break;
-
- case SSH_SCP_DONE:
- if(data->set.upload)
- state(conn, SSH_SCP_SEND_EOF);
- else
- state(conn, SSH_SCP_CHANNEL_FREE);
- break;
-
- case SSH_SCP_SEND_EOF:
- if(sshc->ssh_channel) {
- rc = libssh2_channel_send_eof(sshc->ssh_channel);
- if(rc == LIBSSH2_ERROR_EAGAIN) {
- break;
- }
- if(rc) {
- char *err_msg = NULL;
- (void)libssh2_session_last_error(sshc->ssh_session,
- &err_msg, NULL, 0);
- infof(data, "Failed to send libssh2 channel EOF: %d %s\n",
- rc, err_msg);
- }
- }
- state(conn, SSH_SCP_WAIT_EOF);
- break;
-
- case SSH_SCP_WAIT_EOF:
- if(sshc->ssh_channel) {
- rc = libssh2_channel_wait_eof(sshc->ssh_channel);
- if(rc == LIBSSH2_ERROR_EAGAIN) {
- break;
- }
- if(rc) {
- char *err_msg = NULL;
- (void)libssh2_session_last_error(sshc->ssh_session,
- &err_msg, NULL, 0);
- infof(data, "Failed to get channel EOF: %d %s\n", rc, err_msg);
- }
- }
- state(conn, SSH_SCP_WAIT_CLOSE);
- break;
-
- case SSH_SCP_WAIT_CLOSE:
- if(sshc->ssh_channel) {
- rc = libssh2_channel_wait_closed(sshc->ssh_channel);
- if(rc == LIBSSH2_ERROR_EAGAIN) {
- break;
- }
- if(rc) {
- char *err_msg = NULL;
- (void)libssh2_session_last_error(sshc->ssh_session,
- &err_msg, NULL, 0);
- infof(data, "Channel failed to close: %d %s\n", rc, err_msg);
- }
- }
- state(conn, SSH_SCP_CHANNEL_FREE);
- break;
-
- case SSH_SCP_CHANNEL_FREE:
- if(sshc->ssh_channel) {
- rc = libssh2_channel_free(sshc->ssh_channel);
- if(rc == LIBSSH2_ERROR_EAGAIN) {
- break;
- }
- if(rc < 0) {
- char *err_msg = NULL;
- (void)libssh2_session_last_error(sshc->ssh_session,
- &err_msg, NULL, 0);
- infof(data, "Failed to free libssh2 scp subsystem: %d %s\n",
- rc, err_msg);
- }
- sshc->ssh_channel = NULL;
- }
- DEBUGF(infof(data, "SCP DONE phase complete\n"));
-#if 0 /* PREV */
- state(conn, SSH_SESSION_DISCONNECT);
-#endif
- state(conn, SSH_STOP);
- result = sshc->actualcode;
- break;
-
- case SSH_SESSION_DISCONNECT:
- /* during weird times when we've been prematurely aborted, the channel
- is still alive when we reach this state and we MUST kill the channel
- properly first */
- if(sshc->ssh_channel) {
- rc = libssh2_channel_free(sshc->ssh_channel);
- if(rc == LIBSSH2_ERROR_EAGAIN) {
- break;
- }
- if(rc < 0) {
- char *err_msg = NULL;
- (void)libssh2_session_last_error(sshc->ssh_session,
- &err_msg, NULL, 0);
- infof(data, "Failed to free libssh2 scp subsystem: %d %s\n",
- rc, err_msg);
- }
- sshc->ssh_channel = NULL;
- }
-
- if(sshc->ssh_session) {
- rc = libssh2_session_disconnect(sshc->ssh_session, "Shutdown");
- if(rc == LIBSSH2_ERROR_EAGAIN) {
- break;
- }
- if(rc < 0) {
- char *err_msg = NULL;
- (void)libssh2_session_last_error(sshc->ssh_session,
- &err_msg, NULL, 0);
- infof(data, "Failed to disconnect libssh2 session: %d %s\n",
- rc, err_msg);
- }
- }
-
- Curl_safefree(sshc->homedir);
- conn->data->state.most_recent_ftp_entrypath = NULL;
-
- state(conn, SSH_SESSION_FREE);
- break;
-
- case SSH_SESSION_FREE:
-#ifdef HAVE_LIBSSH2_KNOWNHOST_API
- if(sshc->kh) {
- libssh2_knownhost_free(sshc->kh);
- sshc->kh = NULL;
- }
-#endif
-
-#ifdef HAVE_LIBSSH2_AGENT_API
- if(sshc->ssh_agent) {
- rc = libssh2_agent_disconnect(sshc->ssh_agent);
- if(rc == LIBSSH2_ERROR_EAGAIN) {
- break;
- }
- if(rc < 0) {
- char *err_msg = NULL;
- (void)libssh2_session_last_error(sshc->ssh_session,
- &err_msg, NULL, 0);
- infof(data, "Failed to disconnect from libssh2 agent: %d %s\n",
- rc, err_msg);
- }
- libssh2_agent_free(sshc->ssh_agent);
- sshc->ssh_agent = NULL;
-
- /* NB: there is no need to free identities, they are part of internal
- agent stuff */
- sshc->sshagent_identity = NULL;
- sshc->sshagent_prev_identity = NULL;
- }
-#endif
-
- if(sshc->ssh_session) {
- rc = libssh2_session_free(sshc->ssh_session);
- if(rc == LIBSSH2_ERROR_EAGAIN) {
- break;
- }
- if(rc < 0) {
- char *err_msg = NULL;
- (void)libssh2_session_last_error(sshc->ssh_session,
- &err_msg, NULL, 0);
- infof(data, "Failed to free libssh2 session: %d %s\n", rc, err_msg);
- }
- sshc->ssh_session = NULL;
- }
-
- /* worst-case scenario cleanup */
-
- DEBUGASSERT(sshc->ssh_session == NULL);
- DEBUGASSERT(sshc->ssh_channel == NULL);
- DEBUGASSERT(sshc->sftp_session == NULL);
- DEBUGASSERT(sshc->sftp_handle == NULL);
-#ifdef HAVE_LIBSSH2_KNOWNHOST_API
- DEBUGASSERT(sshc->kh == NULL);
-#endif
-#ifdef HAVE_LIBSSH2_AGENT_API
- DEBUGASSERT(sshc->ssh_agent == NULL);
-#endif
-
- Curl_safefree(sshc->rsa_pub);
- Curl_safefree(sshc->rsa);
-
- Curl_safefree(sshc->quote_path1);
- Curl_safefree(sshc->quote_path2);
-
- Curl_safefree(sshc->homedir);
-
- Curl_safefree(sshc->readdir_filename);
- Curl_safefree(sshc->readdir_longentry);
- Curl_safefree(sshc->readdir_line);
- Curl_safefree(sshc->readdir_linkPath);
-
- /* the code we are about to return */
- result = sshc->actualcode;
-
- memset(sshc, 0, sizeof(struct ssh_conn));
-
- connclose(conn, "SSH session free");
- sshc->state = SSH_SESSION_FREE; /* current */
- sshc->nextstate = SSH_NO_STATE;
- state(conn, SSH_STOP);
- break;
-
- case SSH_QUIT:
- /* fallthrough, just stop! */
- default:
- /* internal error */
- sshc->nextstate = SSH_NO_STATE;
- state(conn, SSH_STOP);
- break;
- }
-
- } while(!rc && (sshc->state != SSH_STOP));
-
- if(rc == LIBSSH2_ERROR_EAGAIN) {
- /* we would block, we need to wait for the socket to be ready (in the
- right direction too)! */
- *block = TRUE;
- }
-
- return result;
-}
-
-/* called by the multi interface to figure out what socket(s) to wait for and
- for what actions in the DO_DONE, PERFORM and WAITPERFORM states */
-static int ssh_perform_getsock(const struct connectdata *conn,
- curl_socket_t *sock, /* points to numsocks
- number of sockets */
- int numsocks)
-{
-#ifdef HAVE_LIBSSH2_SESSION_BLOCK_DIRECTION
- int bitmap = GETSOCK_BLANK;
- (void)numsocks;
-
- sock[0] = conn->sock[FIRSTSOCKET];
-
- if(conn->waitfor & KEEP_RECV)
- bitmap |= GETSOCK_READSOCK(FIRSTSOCKET);
-
- if(conn->waitfor & KEEP_SEND)
- bitmap |= GETSOCK_WRITESOCK(FIRSTSOCKET);
-
- return bitmap;
-#else
- /* if we don't know the direction we can use the generic *_getsock()
- function even for the protocol_connect and doing states */
- return Curl_single_getsock(conn, sock, numsocks);
-#endif
-}
-
-/* Generic function called by the multi interface to figure out what socket(s)
- to wait for and for what actions during the DOING and PROTOCONNECT states*/
-static int ssh_getsock(struct connectdata *conn,
- curl_socket_t *sock, /* points to numsocks number
- of sockets */
- int numsocks)
-{
-#ifndef HAVE_LIBSSH2_SESSION_BLOCK_DIRECTION
- (void)conn;
- (void)sock;
- (void)numsocks;
- /* if we don't know any direction we can just play along as we used to and
- not provide any sensible info */
- return GETSOCK_BLANK;
-#else
- /* if we know the direction we can use the generic *_getsock() function even
- for the protocol_connect and doing states */
- return ssh_perform_getsock(conn, sock, numsocks);
-#endif
-}
-
-#ifdef HAVE_LIBSSH2_SESSION_BLOCK_DIRECTION
-/*
- * When one of the libssh2 functions has returned LIBSSH2_ERROR_EAGAIN this
- * function is used to figure out in what direction and stores this info so
- * that the multi interface can take advantage of it. Make sure to call this
- * function in all cases so that when it _doesn't_ return EAGAIN we can
- * restore the default wait bits.
- */
-static void ssh_block2waitfor(struct connectdata *conn, bool block)
-{
- struct ssh_conn *sshc = &conn->proto.sshc;
- int dir = 0;
- if(block) {
- dir = libssh2_session_block_directions(sshc->ssh_session);
- if(dir) {
- /* translate the libssh2 define bits into our own bit defines */
- conn->waitfor = ((dir&LIBSSH2_SESSION_BLOCK_INBOUND)?KEEP_RECV:0) |
- ((dir&LIBSSH2_SESSION_BLOCK_OUTBOUND)?KEEP_SEND:0);
- }
- }
- if(!dir)
- /* It didn't block or libssh2 didn't reveal in which direction, put back
- the original set */
- conn->waitfor = sshc->orig_waitfor;
-}
-#else
- /* no libssh2 directional support so we simply don't know */
-#define ssh_block2waitfor(x,y) Curl_nop_stmt
-#endif
-
-/* called repeatedly until done from multi.c */
-static CURLcode ssh_multi_statemach(struct connectdata *conn, bool *done)
-{
- struct ssh_conn *sshc = &conn->proto.sshc;
- CURLcode result = CURLE_OK;
- bool block; /* we store the status and use that to provide a ssh_getsock()
- implementation */
- do {
- result = ssh_statemach_act(conn, &block);
- *done = (sshc->state == SSH_STOP) ? TRUE : FALSE;
- /* if there's no error, it isn't done and it didn't EWOULDBLOCK, then
- try again */
- } while(!result && !*done && !block);
- ssh_block2waitfor(conn, block);
-
- return result;
-}
-
-static CURLcode ssh_block_statemach(struct connectdata *conn,
- bool disconnect)
-{
- struct ssh_conn *sshc = &conn->proto.sshc;
- CURLcode result = CURLE_OK;
- struct Curl_easy *data = conn->data;
-
- while((sshc->state != SSH_STOP) && !result) {
- bool block;
- timediff_t left = 1000;
- struct curltime now = Curl_now();
-
- result = ssh_statemach_act(conn, &block);
- if(result)
- break;
-
- if(!disconnect) {
- if(Curl_pgrsUpdate(conn))
- return CURLE_ABORTED_BY_CALLBACK;
-
- result = Curl_speedcheck(data, now);
- if(result)
- break;
-
- left = Curl_timeleft(data, NULL, FALSE);
- if(left < 0) {
- failf(data, "Operation timed out");
- return CURLE_OPERATION_TIMEDOUT;
- }
- }
-
-#ifdef HAVE_LIBSSH2_SESSION_BLOCK_DIRECTION
- if(!result && block) {
- int dir = libssh2_session_block_directions(sshc->ssh_session);
- curl_socket_t sock = conn->sock[FIRSTSOCKET];
- curl_socket_t fd_read = CURL_SOCKET_BAD;
- curl_socket_t fd_write = CURL_SOCKET_BAD;
- if(LIBSSH2_SESSION_BLOCK_INBOUND & dir)
- fd_read = sock;
- if(LIBSSH2_SESSION_BLOCK_OUTBOUND & dir)
- fd_write = sock;
- /* wait for the socket to become ready */
- (void)Curl_socket_check(fd_read, CURL_SOCKET_BAD, fd_write,
- left>1000?1000:left); /* ignore result */
- }
-#endif
-
- }
-
- return result;
-}
-
-/*
- * SSH setup and connection
- */
-static CURLcode ssh_setup_connection(struct connectdata *conn)
-{
- struct SSHPROTO *ssh;
-
- conn->data->req.protop = ssh = calloc(1, sizeof(struct SSHPROTO));
- if(!ssh)
- return CURLE_OUT_OF_MEMORY;
-
- return CURLE_OK;
-}
-
-static Curl_recv scp_recv, sftp_recv;
-static Curl_send scp_send, sftp_send;
-
-/*
- * Curl_ssh_connect() gets called from Curl_protocol_connect() to allow us to
- * do protocol-specific actions at connect-time.
- */
-static CURLcode ssh_connect(struct connectdata *conn, bool *done)
-{
-#ifdef CURL_LIBSSH2_DEBUG
- curl_socket_t sock;
-#endif
- struct ssh_conn *ssh;
- CURLcode result;
- struct Curl_easy *data = conn->data;
-
- /* initialize per-handle data if not already */
- if(!data->req.protop)
- ssh_setup_connection(conn);
-
- /* We default to persistent connections. We set this already in this connect
- function to make the re-use checks properly be able to check this bit. */
- connkeep(conn, "SSH default");
-
- if(conn->handler->protocol & CURLPROTO_SCP) {
- conn->recv[FIRSTSOCKET] = scp_recv;
- conn->send[FIRSTSOCKET] = scp_send;
- }
- else {
- conn->recv[FIRSTSOCKET] = sftp_recv;
- conn->send[FIRSTSOCKET] = sftp_send;
- }
- ssh = &conn->proto.sshc;
-
-#ifdef CURL_LIBSSH2_DEBUG
- if(conn->user) {
- infof(data, "User: %s\n", conn->user);
- }
- if(conn->passwd) {
- infof(data, "Password: %s\n", conn->passwd);
- }
- sock = conn->sock[FIRSTSOCKET];
-#endif /* CURL_LIBSSH2_DEBUG */
-
- ssh->ssh_session = libssh2_session_init_ex(my_libssh2_malloc,
- my_libssh2_free,
- my_libssh2_realloc, conn);
- if(ssh->ssh_session == NULL) {
- failf(data, "Failure initialising ssh session");
- return CURLE_FAILED_INIT;
- }
-
- if(data->set.ssh_compression) {
-#if LIBSSH2_VERSION_NUM >= 0x010208
- if(libssh2_session_flag(ssh->ssh_session, LIBSSH2_FLAG_COMPRESS, 1) < 0)
-#endif
- infof(data, "Failed to enable compression for ssh session\n");
- }
-
-#ifdef HAVE_LIBSSH2_KNOWNHOST_API
- if(data->set.str[STRING_SSH_KNOWNHOSTS]) {
- int rc;
- ssh->kh = libssh2_knownhost_init(ssh->ssh_session);
- if(!ssh->kh) {
- libssh2_session_free(ssh->ssh_session);
- return CURLE_FAILED_INIT;
- }
-
- /* read all known hosts from there */
- rc = libssh2_knownhost_readfile(ssh->kh,
- data->set.str[STRING_SSH_KNOWNHOSTS],
- LIBSSH2_KNOWNHOST_FILE_OPENSSH);
- if(rc < 0)
- infof(data, "Failed to read known hosts from %s\n",
- data->set.str[STRING_SSH_KNOWNHOSTS]);
- }
-#endif /* HAVE_LIBSSH2_KNOWNHOST_API */
-
-#ifdef CURL_LIBSSH2_DEBUG
- libssh2_trace(ssh->ssh_session, ~0);
- infof(data, "SSH socket: %d\n", (int)sock);
-#endif /* CURL_LIBSSH2_DEBUG */
-
- state(conn, SSH_INIT);
-
- result = ssh_multi_statemach(conn, done);
-
- return result;
-}
-
-/*
- ***********************************************************************
- *
- * scp_perform()
- *
- * This is the actual DO function for SCP. Get a file according to
- * the options previously setup.
- */
-
-static
-CURLcode scp_perform(struct connectdata *conn,
- bool *connected,
- bool *dophase_done)
-{
- CURLcode result = CURLE_OK;
-
- DEBUGF(infof(conn->data, "DO phase starts\n"));
-
- *dophase_done = FALSE; /* not done yet */
-
- /* start the first command in the DO phase */
- state(conn, SSH_SCP_TRANS_INIT);
-
- /* run the state-machine */
- result = ssh_multi_statemach(conn, dophase_done);
-
- *connected = conn->bits.tcpconnect[FIRSTSOCKET];
-
- if(*dophase_done) {
- DEBUGF(infof(conn->data, "DO phase is complete\n"));
- }
-
- return result;
-}
-
-/* called from multi.c while DOing */
-static CURLcode scp_doing(struct connectdata *conn,
- bool *dophase_done)
-{
- CURLcode result;
- result = ssh_multi_statemach(conn, dophase_done);
-
- if(*dophase_done) {
- DEBUGF(infof(conn->data, "DO phase is complete\n"));
- }
- return result;
-}
-
-/*
- * The DO function is generic for both protocols. There was previously two
- * separate ones but this way means less duplicated code.
- */
-
-static CURLcode ssh_do(struct connectdata *conn, bool *done)
-{
- CURLcode result;
- bool connected = 0;
- struct Curl_easy *data = conn->data;
- struct ssh_conn *sshc = &conn->proto.sshc;
-
- *done = FALSE; /* default to false */
-
- data->req.size = -1; /* make sure this is unknown at this point */
-
- sshc->actualcode = CURLE_OK; /* reset error code */
- sshc->secondCreateDirs = 0; /* reset the create dir attempt state
- variable */
-
- Curl_pgrsSetUploadCounter(data, 0);
- Curl_pgrsSetDownloadCounter(data, 0);
- Curl_pgrsSetUploadSize(data, -1);
- Curl_pgrsSetDownloadSize(data, -1);
-
- if(conn->handler->protocol & CURLPROTO_SCP)
- result = scp_perform(conn, &connected, done);
- else
- result = sftp_perform(conn, &connected, done);
-
- return result;
-}
-
-/* BLOCKING, but the function is using the state machine so the only reason
- this is still blocking is that the multi interface code has no support for
- disconnecting operations that takes a while */
-static CURLcode scp_disconnect(struct connectdata *conn, bool dead_connection)
-{
- CURLcode result = CURLE_OK;
- struct ssh_conn *ssh = &conn->proto.sshc;
- (void) dead_connection;
-
- if(ssh->ssh_session) {
- /* only if there's a session still around to use! */
-
- state(conn, SSH_SESSION_DISCONNECT);
-
- result = ssh_block_statemach(conn, TRUE);
- }
-
- return result;
-}
-
-/* generic done function for both SCP and SFTP called from their specific
- done functions */
-static CURLcode ssh_done(struct connectdata *conn, CURLcode status)
-{
- CURLcode result = CURLE_OK;
- struct SSHPROTO *sftp_scp = conn->data->req.protop;
-
- if(!status) {
- /* run the state-machine */
- result = ssh_block_statemach(conn, FALSE);
- }
- else
- result = status;
-
- if(sftp_scp)
- Curl_safefree(sftp_scp->path);
- if(Curl_pgrsDone(conn))
- return CURLE_ABORTED_BY_CALLBACK;
-
- conn->data->req.keepon = 0; /* clear all bits */
- return result;
-}
-
-
-static CURLcode scp_done(struct connectdata *conn, CURLcode status,
- bool premature)
-{
- (void)premature; /* not used */
-
- if(!status)
- state(conn, SSH_SCP_DONE);
-
- return ssh_done(conn, status);
-
-}
-
-static ssize_t scp_send(struct connectdata *conn, int sockindex,
- const void *mem, size_t len, CURLcode *err)
-{
- ssize_t nwrite;
- (void)sockindex; /* we only support SCP on the fixed known primary socket */
-
- /* libssh2_channel_write() returns int! */
- nwrite = (ssize_t)
- libssh2_channel_write(conn->proto.sshc.ssh_channel, mem, len);
-
- ssh_block2waitfor(conn, (nwrite == LIBSSH2_ERROR_EAGAIN)?TRUE:FALSE);
-
- if(nwrite == LIBSSH2_ERROR_EAGAIN) {
- *err = CURLE_AGAIN;
- nwrite = 0;
- }
- else if(nwrite < LIBSSH2_ERROR_NONE) {
- *err = libssh2_session_error_to_CURLE((int)nwrite);
- nwrite = -1;
- }
-
- return nwrite;
-}
-
-static ssize_t scp_recv(struct connectdata *conn, int sockindex,
- char *mem, size_t len, CURLcode *err)
-{
- ssize_t nread;
- (void)sockindex; /* we only support SCP on the fixed known primary socket */
-
- /* libssh2_channel_read() returns int */
- nread = (ssize_t)
- libssh2_channel_read(conn->proto.sshc.ssh_channel, mem, len);
-
- ssh_block2waitfor(conn, (nread == LIBSSH2_ERROR_EAGAIN)?TRUE:FALSE);
- if(nread == LIBSSH2_ERROR_EAGAIN) {
- *err = CURLE_AGAIN;
- nread = -1;
- }
-
- return nread;
-}
-
-/*
- * =============== SFTP ===============
- */
-
-/*
- ***********************************************************************
- *
- * sftp_perform()
- *
- * This is the actual DO function for SFTP. Get a file/directory according to
- * the options previously setup.
- */
-
-static
-CURLcode sftp_perform(struct connectdata *conn,
- bool *connected,
- bool *dophase_done)
-{
- CURLcode result = CURLE_OK;
-
- DEBUGF(infof(conn->data, "DO phase starts\n"));
-
- *dophase_done = FALSE; /* not done yet */
-
- /* start the first command in the DO phase */
- state(conn, SSH_SFTP_QUOTE_INIT);
-
- /* run the state-machine */
- result = ssh_multi_statemach(conn, dophase_done);
-
- *connected = conn->bits.tcpconnect[FIRSTSOCKET];
-
- if(*dophase_done) {
- DEBUGF(infof(conn->data, "DO phase is complete\n"));
- }
-
- return result;
-}
-
-/* called from multi.c while DOing */
-static CURLcode sftp_doing(struct connectdata *conn,
- bool *dophase_done)
-{
- CURLcode result = ssh_multi_statemach(conn, dophase_done);
-
- if(*dophase_done) {
- DEBUGF(infof(conn->data, "DO phase is complete\n"));
- }
- return result;
-}
-
-/* BLOCKING, but the function is using the state machine so the only reason
- this is still blocking is that the multi interface code has no support for
- disconnecting operations that takes a while */
-static CURLcode sftp_disconnect(struct connectdata *conn, bool dead_connection)
-{
- CURLcode result = CURLE_OK;
- (void) dead_connection;
-
- DEBUGF(infof(conn->data, "SSH DISCONNECT starts now\n"));
-
- if(conn->proto.sshc.ssh_session) {
- /* only if there's a session still around to use! */
- state(conn, SSH_SFTP_SHUTDOWN);
- result = ssh_block_statemach(conn, TRUE);
- }
-
- DEBUGF(infof(conn->data, "SSH DISCONNECT is done\n"));
-
- return result;
-
-}
-
-static CURLcode sftp_done(struct connectdata *conn, CURLcode status,
- bool premature)
-{
- struct ssh_conn *sshc = &conn->proto.sshc;
-
- if(!status) {
- /* Post quote commands are executed after the SFTP_CLOSE state to avoid
- errors that could happen due to open file handles during POSTQUOTE
- operation */
- if(!premature && conn->data->set.postquote && !conn->bits.retry)
- sshc->nextstate = SSH_SFTP_POSTQUOTE_INIT;
- state(conn, SSH_SFTP_CLOSE);
- }
- return ssh_done(conn, status);
-}
-
-/* return number of sent bytes */
-static ssize_t sftp_send(struct connectdata *conn, int sockindex,
- const void *mem, size_t len, CURLcode *err)
-{
- ssize_t nwrite; /* libssh2_sftp_write() used to return size_t in 0.14
- but is changed to ssize_t in 0.15. These days we don't
- support libssh2 0.15*/
- (void)sockindex;
-
- nwrite = libssh2_sftp_write(conn->proto.sshc.sftp_handle, mem, len);
-
- ssh_block2waitfor(conn, (nwrite == LIBSSH2_ERROR_EAGAIN)?TRUE:FALSE);
-
- if(nwrite == LIBSSH2_ERROR_EAGAIN) {
- *err = CURLE_AGAIN;
- nwrite = 0;
- }
- else if(nwrite < LIBSSH2_ERROR_NONE) {
- *err = libssh2_session_error_to_CURLE((int)nwrite);
- nwrite = -1;
- }
-
- return nwrite;
-}
-
-/*
- * Return number of received (decrypted) bytes
- * or <0 on error
- */
-static ssize_t sftp_recv(struct connectdata *conn, int sockindex,
- char *mem, size_t len, CURLcode *err)
-{
- ssize_t nread;
- (void)sockindex;
-
- nread = libssh2_sftp_read(conn->proto.sshc.sftp_handle, mem, len);
-
- ssh_block2waitfor(conn, (nread == LIBSSH2_ERROR_EAGAIN)?TRUE:FALSE);
-
- if(nread == LIBSSH2_ERROR_EAGAIN) {
- *err = CURLE_AGAIN;
- nread = -1;
-
- }
- else if(nread < 0) {
- *err = libssh2_session_error_to_CURLE((int)nread);
- }
- return nread;
-}
-
-static const char *sftp_libssh2_strerror(int err)
-{
- switch(err) {
- case LIBSSH2_FX_NO_SUCH_FILE:
- return "No such file or directory";
-
- case LIBSSH2_FX_PERMISSION_DENIED:
- return "Permission denied";
-
- case LIBSSH2_FX_FAILURE:
- return "Operation failed";
-
- case LIBSSH2_FX_BAD_MESSAGE:
- return "Bad message from SFTP server";
-
- case LIBSSH2_FX_NO_CONNECTION:
- return "Not connected to SFTP server";
-
- case LIBSSH2_FX_CONNECTION_LOST:
- return "Connection to SFTP server lost";
-
- case LIBSSH2_FX_OP_UNSUPPORTED:
- return "Operation not supported by SFTP server";
-
- case LIBSSH2_FX_INVALID_HANDLE:
- return "Invalid handle";
-
- case LIBSSH2_FX_NO_SUCH_PATH:
- return "No such file or directory";
-
- case LIBSSH2_FX_FILE_ALREADY_EXISTS:
- return "File already exists";
-
- case LIBSSH2_FX_WRITE_PROTECT:
- return "File is write protected";
-
- case LIBSSH2_FX_NO_MEDIA:
- return "No media";
-
- case LIBSSH2_FX_NO_SPACE_ON_FILESYSTEM:
- return "Disk full";
-
- case LIBSSH2_FX_QUOTA_EXCEEDED:
- return "User quota exceeded";
-
- case LIBSSH2_FX_UNKNOWN_PRINCIPLE:
- return "Unknown principle";
-
- case LIBSSH2_FX_LOCK_CONFlICT:
- return "File lock conflict";
-
- case LIBSSH2_FX_DIR_NOT_EMPTY:
- return "Directory not empty";
-
- case LIBSSH2_FX_NOT_A_DIRECTORY:
- return "Not a directory";
-
- case LIBSSH2_FX_INVALID_FILENAME:
- return "Invalid filename";
-
- case LIBSSH2_FX_LINK_LOOP:
- return "Link points to itself";
- }
- return "Unknown error in libssh2";
-}
-
-#endif /* USE_LIBSSH2 */
--
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