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-rw-r--r--libs/libcurl/src/sslgen.c676
1 files changed, 676 insertions, 0 deletions
diff --git a/libs/libcurl/src/sslgen.c b/libs/libcurl/src/sslgen.c
new file mode 100644
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+++ b/libs/libcurl/src/sslgen.c
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+/***************************************************************************
+ * _ _ ____ _
+ * Project ___| | | | _ \| |
+ * / __| | | | |_) | |
+ * | (__| |_| | _ <| |___
+ * \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 1998 - 2013, 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 http://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.
+ *
+ ***************************************************************************/
+
+/* This file is for implementing all "generic" SSL functions that all libcurl
+ internals should use. It is then responsible for calling the proper
+ "backend" function.
+
+ SSL-functions in libcurl should call functions in this source file, and not
+ to any specific SSL-layer.
+
+ Curl_ssl_ - prefix for generic ones
+ Curl_ossl_ - prefix for OpenSSL ones
+ Curl_gtls_ - prefix for GnuTLS ones
+ Curl_nss_ - prefix for NSS ones
+ Curl_qssl_ - prefix for QsoSSL ones
+ Curl_gskit_ - prefix for GSKit ones
+ Curl_polarssl_ - prefix for PolarSSL ones
+ Curl_cyassl_ - prefix for CyaSSL ones
+ Curl_schannel_ - prefix for Schannel SSPI ones
+ Curl_darwinssl_ - prefix for SecureTransport (Darwin) ones
+
+ Note that this source code uses curlssl_* functions, and they are all
+ defines/macros #defined by the lib-specific header files.
+
+ "SSL/TLS Strong Encryption: An Introduction"
+ http://httpd.apache.org/docs-2.0/ssl/ssl_intro.html
+*/
+
+#include "curl_setup.h"
+
+#ifdef HAVE_SYS_TYPES_H
+#include <sys/types.h>
+#endif
+#ifdef HAVE_SYS_STAT_H
+#include <sys/stat.h>
+#endif
+#ifdef HAVE_FCNTL_H
+#include <fcntl.h>
+#endif
+
+#include "urldata.h"
+#define SSLGEN_C
+#include "sslgen.h" /* generic SSL protos etc */
+#include "ssluse.h" /* OpenSSL versions */
+#include "gtls.h" /* GnuTLS versions */
+#include "nssg.h" /* NSS versions */
+#include "qssl.h" /* QSOSSL versions */
+#include "gskit.h" /* Global Secure ToolKit versions */
+#include "polarssl.h" /* PolarSSL versions */
+#include "axtls.h" /* axTLS versions */
+#include "cyassl.h" /* CyaSSL versions */
+#include "curl_schannel.h" /* Schannel SSPI version */
+#include "curl_darwinssl.h" /* SecureTransport (Darwin) version */
+#include "slist.h"
+#include "sendf.h"
+#include "rawstr.h"
+#include "url.h"
+#include "curl_memory.h"
+#include "progress.h"
+#include "share.h"
+#include "timeval.h"
+
+#define _MPRINTF_REPLACE /* use our functions only */
+#include <curl/mprintf.h>
+
+/* The last #include file should be: */
+#include "memdebug.h"
+
+/* convenience macro to check if this handle is using a shared SSL session */
+#define SSLSESSION_SHARED(data) (data->share && \
+ (data->share->specifier & \
+ (1<<CURL_LOCK_DATA_SSL_SESSION)))
+
+static bool safe_strequal(char* str1, char* str2)
+{
+ if(str1 && str2)
+ /* both pointers point to something then compare them */
+ return (0 != Curl_raw_equal(str1, str2)) ? TRUE : FALSE;
+ else
+ /* if both pointers are NULL then treat them as equal */
+ return (!str1 && !str2) ? TRUE : FALSE;
+}
+
+bool
+Curl_ssl_config_matches(struct ssl_config_data* data,
+ struct ssl_config_data* needle)
+{
+ if((data->version == needle->version) &&
+ (data->verifypeer == needle->verifypeer) &&
+ (data->verifyhost == needle->verifyhost) &&
+ safe_strequal(data->CApath, needle->CApath) &&
+ safe_strequal(data->CAfile, needle->CAfile) &&
+ safe_strequal(data->random_file, needle->random_file) &&
+ safe_strequal(data->egdsocket, needle->egdsocket) &&
+ safe_strequal(data->cipher_list, needle->cipher_list))
+ return TRUE;
+
+ return FALSE;
+}
+
+bool
+Curl_clone_ssl_config(struct ssl_config_data *source,
+ struct ssl_config_data *dest)
+{
+ dest->sessionid = source->sessionid;
+ dest->verifyhost = source->verifyhost;
+ dest->verifypeer = source->verifypeer;
+ dest->version = source->version;
+
+ if(source->CAfile) {
+ dest->CAfile = strdup(source->CAfile);
+ if(!dest->CAfile)
+ return FALSE;
+ }
+ else
+ dest->CAfile = NULL;
+
+ if(source->CApath) {
+ dest->CApath = strdup(source->CApath);
+ if(!dest->CApath)
+ return FALSE;
+ }
+ else
+ dest->CApath = NULL;
+
+ if(source->cipher_list) {
+ dest->cipher_list = strdup(source->cipher_list);
+ if(!dest->cipher_list)
+ return FALSE;
+ }
+ else
+ dest->cipher_list = NULL;
+
+ if(source->egdsocket) {
+ dest->egdsocket = strdup(source->egdsocket);
+ if(!dest->egdsocket)
+ return FALSE;
+ }
+ else
+ dest->egdsocket = NULL;
+
+ if(source->random_file) {
+ dest->random_file = strdup(source->random_file);
+ if(!dest->random_file)
+ return FALSE;
+ }
+ else
+ dest->random_file = NULL;
+
+ return TRUE;
+}
+
+void Curl_free_ssl_config(struct ssl_config_data* sslc)
+{
+ Curl_safefree(sslc->CAfile);
+ Curl_safefree(sslc->CApath);
+ Curl_safefree(sslc->cipher_list);
+ Curl_safefree(sslc->egdsocket);
+ Curl_safefree(sslc->random_file);
+}
+
+
+/*
+ * Curl_rand() returns a random unsigned integer, 32bit.
+ *
+ * This non-SSL function is put here only because this file is the only one
+ * with knowledge of what the underlying SSL libraries provide in terms of
+ * randomizers.
+ *
+ * NOTE: 'data' may be passed in as NULL when coming from external API without
+ * easy handle!
+ *
+ */
+
+unsigned int Curl_rand(struct SessionHandle *data)
+{
+ unsigned int r;
+ static unsigned int randseed;
+ static bool seeded = FALSE;
+
+#ifndef have_curlssl_random
+ (void)data;
+#else
+ if(data) {
+ Curl_ssl_random(data, (unsigned char *)&r, sizeof(r));
+ return r;
+ }
+#endif
+
+#ifdef RANDOM_FILE
+ if(!seeded) {
+ /* if there's a random file to read a seed from, use it */
+ int fd = open(RANDOM_FILE, O_RDONLY);
+ if(fd > -1) {
+ /* read random data into the randseed variable */
+ ssize_t nread = read(fd, &randseed, sizeof(randseed));
+ if(nread == sizeof(randseed))
+ seeded = TRUE;
+ close(fd);
+ }
+ }
+#endif
+
+ if(!seeded) {
+ struct timeval now = curlx_tvnow();
+ randseed += (unsigned int)now.tv_usec + (unsigned int)now.tv_sec;
+ randseed = randseed * 1103515245 + 12345;
+ randseed = randseed * 1103515245 + 12345;
+ randseed = randseed * 1103515245 + 12345;
+ seeded = TRUE;
+ }
+
+ /* Return an unsigned 32-bit pseudo-random number. */
+ r = randseed = randseed * 1103515245 + 12345;
+ return (r << 16) | ((r >> 16) & 0xFFFF);
+}
+
+#ifdef USE_SSL
+
+/* "global" init done? */
+static bool init_ssl=FALSE;
+
+/**
+ * Global SSL init
+ *
+ * @retval 0 error initializing SSL
+ * @retval 1 SSL initialized successfully
+ */
+int Curl_ssl_init(void)
+{
+ /* make sure this is only done once */
+ if(init_ssl)
+ return 1;
+ init_ssl = TRUE; /* never again */
+
+ return curlssl_init();
+}
+
+
+/* Global cleanup */
+void Curl_ssl_cleanup(void)
+{
+ if(init_ssl) {
+ /* only cleanup if we did a previous init */
+ curlssl_cleanup();
+ init_ssl = FALSE;
+ }
+}
+
+CURLcode
+Curl_ssl_connect(struct connectdata *conn, int sockindex)
+{
+ CURLcode res;
+ /* mark this is being ssl-enabled from here on. */
+ conn->ssl[sockindex].use = TRUE;
+ conn->ssl[sockindex].state = ssl_connection_negotiating;
+
+ res = curlssl_connect(conn, sockindex);
+
+ if(!res)
+ Curl_pgrsTime(conn->data, TIMER_APPCONNECT); /* SSL is connected */
+
+ return res;
+}
+
+CURLcode
+Curl_ssl_connect_nonblocking(struct connectdata *conn, int sockindex,
+ bool *done)
+{
+ CURLcode res;
+ /* mark this is being ssl requested from here on. */
+ conn->ssl[sockindex].use = TRUE;
+#ifdef curlssl_connect_nonblocking
+ res = curlssl_connect_nonblocking(conn, sockindex, done);
+#else
+ *done = TRUE; /* fallback to BLOCKING */
+ res = curlssl_connect(conn, sockindex);
+#endif /* non-blocking connect support */
+ if(!res && *done)
+ Curl_pgrsTime(conn->data, TIMER_APPCONNECT); /* SSL is connected */
+ return res;
+}
+
+/*
+ * Check if there's a session ID for the given connection in the cache, and if
+ * there's one suitable, it is provided. Returns TRUE when no entry matched.
+ */
+int Curl_ssl_getsessionid(struct connectdata *conn,
+ void **ssl_sessionid,
+ size_t *idsize) /* set 0 if unknown */
+{
+ struct curl_ssl_session *check;
+ struct SessionHandle *data = conn->data;
+ size_t i;
+ long *general_age;
+ bool no_match = TRUE;
+
+ *ssl_sessionid = NULL;
+
+ if(!conn->ssl_config.sessionid)
+ /* session ID re-use is disabled */
+ return TRUE;
+
+ /* Lock if shared */
+ if(SSLSESSION_SHARED(data)) {
+ Curl_share_lock(data, CURL_LOCK_DATA_SSL_SESSION, CURL_LOCK_ACCESS_SINGLE);
+ general_age = &data->share->sessionage;
+ }
+ else
+ general_age = &data->state.sessionage;
+
+ for(i = 0; i < data->set.ssl.max_ssl_sessions; i++) {
+ check = &data->state.session[i];
+ if(!check->sessionid)
+ /* not session ID means blank entry */
+ continue;
+ if(Curl_raw_equal(conn->host.name, check->name) &&
+ (conn->remote_port == check->remote_port) &&
+ Curl_ssl_config_matches(&conn->ssl_config, &check->ssl_config)) {
+ /* yes, we have a session ID! */
+ (*general_age)++; /* increase general age */
+ check->age = *general_age; /* set this as used in this age */
+ *ssl_sessionid = check->sessionid;
+ if(idsize)
+ *idsize = check->idsize;
+ no_match = FALSE;
+ break;
+ }
+ }
+
+ /* Unlock */
+ if(SSLSESSION_SHARED(data))
+ Curl_share_unlock(data, CURL_LOCK_DATA_SSL_SESSION);
+
+ return no_match;
+}
+
+/*
+ * Kill a single session ID entry in the cache.
+ */
+void Curl_ssl_kill_session(struct curl_ssl_session *session)
+{
+ if(session->sessionid) {
+ /* defensive check */
+
+ /* free the ID the SSL-layer specific way */
+ curlssl_session_free(session->sessionid);
+
+ session->sessionid = NULL;
+ session->age = 0; /* fresh */
+
+ Curl_free_ssl_config(&session->ssl_config);
+
+ Curl_safefree(session->name);
+ }
+}
+
+/*
+ * Delete the given session ID from the cache.
+ */
+void Curl_ssl_delsessionid(struct connectdata *conn, void *ssl_sessionid)
+{
+ size_t i;
+ struct SessionHandle *data=conn->data;
+
+ if(SSLSESSION_SHARED(data))
+ Curl_share_lock(data, CURL_LOCK_DATA_SSL_SESSION, CURL_LOCK_ACCESS_SINGLE);
+
+ for(i = 0; i < data->set.ssl.max_ssl_sessions; i++) {
+ struct curl_ssl_session *check = &data->state.session[i];
+
+ if(check->sessionid == ssl_sessionid) {
+ Curl_ssl_kill_session(check);
+ break;
+ }
+ }
+
+ if(SSLSESSION_SHARED(data))
+ Curl_share_unlock(data, CURL_LOCK_DATA_SSL_SESSION);
+}
+
+/*
+ * Store session id in the session cache. The ID passed on to this function
+ * must already have been extracted and allocated the proper way for the SSL
+ * layer. Curl_XXXX_session_free() will be called to free/kill the session ID
+ * later on.
+ */
+CURLcode Curl_ssl_addsessionid(struct connectdata *conn,
+ void *ssl_sessionid,
+ size_t idsize)
+{
+ size_t i;
+ struct SessionHandle *data=conn->data; /* the mother of all structs */
+ struct curl_ssl_session *store = &data->state.session[0];
+ long oldest_age=data->state.session[0].age; /* zero if unused */
+ char *clone_host;
+ long *general_age;
+
+ /* Even though session ID re-use might be disabled, that only disables USING
+ IT. We still store it here in case the re-using is again enabled for an
+ upcoming transfer */
+
+ clone_host = strdup(conn->host.name);
+ if(!clone_host)
+ return CURLE_OUT_OF_MEMORY; /* bail out */
+
+ /* Now we should add the session ID and the host name to the cache, (remove
+ the oldest if necessary) */
+
+ /* If using shared SSL session, lock! */
+ if(SSLSESSION_SHARED(data)) {
+ Curl_share_lock(data, CURL_LOCK_DATA_SSL_SESSION, CURL_LOCK_ACCESS_SINGLE);
+ general_age = &data->share->sessionage;
+ }
+ else {
+ general_age = &data->state.sessionage;
+ }
+
+ /* find an empty slot for us, or find the oldest */
+ for(i = 1; (i < data->set.ssl.max_ssl_sessions) &&
+ data->state.session[i].sessionid; i++) {
+ if(data->state.session[i].age < oldest_age) {
+ oldest_age = data->state.session[i].age;
+ store = &data->state.session[i];
+ }
+ }
+ if(i == data->set.ssl.max_ssl_sessions)
+ /* cache is full, we must "kill" the oldest entry! */
+ Curl_ssl_kill_session(store);
+ else
+ store = &data->state.session[i]; /* use this slot */
+
+ /* now init the session struct wisely */
+ store->sessionid = ssl_sessionid;
+ store->idsize = idsize;
+ store->age = *general_age; /* set current age */
+ if(store->name)
+ /* free it if there's one already present */
+ free(store->name);
+ store->name = clone_host; /* clone host name */
+ store->remote_port = conn->remote_port; /* port number */
+
+
+ /* Unlock */
+ if(SSLSESSION_SHARED(data))
+ Curl_share_unlock(data, CURL_LOCK_DATA_SSL_SESSION);
+
+ if(!Curl_clone_ssl_config(&conn->ssl_config, &store->ssl_config)) {
+ store->sessionid = NULL; /* let caller free sessionid */
+ free(clone_host);
+ return CURLE_OUT_OF_MEMORY;
+ }
+
+ return CURLE_OK;
+}
+
+
+void Curl_ssl_close_all(struct SessionHandle *data)
+{
+ size_t i;
+ /* kill the session ID cache if not shared */
+ if(data->state.session && !SSLSESSION_SHARED(data)) {
+ for(i = 0; i < data->set.ssl.max_ssl_sessions; i++)
+ /* the single-killer function handles empty table slots */
+ Curl_ssl_kill_session(&data->state.session[i]);
+
+ /* free the cache data */
+ Curl_safefree(data->state.session);
+ }
+
+ curlssl_close_all(data);
+}
+
+void Curl_ssl_close(struct connectdata *conn, int sockindex)
+{
+ DEBUGASSERT((sockindex <= 1) && (sockindex >= -1));
+ curlssl_close(conn, sockindex);
+}
+
+CURLcode Curl_ssl_shutdown(struct connectdata *conn, int sockindex)
+{
+ if(curlssl_shutdown(conn, sockindex))
+ return CURLE_SSL_SHUTDOWN_FAILED;
+
+ conn->ssl[sockindex].use = FALSE; /* get back to ordinary socket usage */
+ conn->ssl[sockindex].state = ssl_connection_none;
+
+ conn->recv[sockindex] = Curl_recv_plain;
+ conn->send[sockindex] = Curl_send_plain;
+
+ return CURLE_OK;
+}
+
+/* Selects an SSL crypto engine
+ */
+CURLcode Curl_ssl_set_engine(struct SessionHandle *data, const char *engine)
+{
+ return curlssl_set_engine(data, engine);
+}
+
+/* Selects the default SSL crypto engine
+ */
+CURLcode Curl_ssl_set_engine_default(struct SessionHandle *data)
+{
+ return curlssl_set_engine_default(data);
+}
+
+/* Return list of OpenSSL crypto engine names. */
+struct curl_slist *Curl_ssl_engines_list(struct SessionHandle *data)
+{
+ return curlssl_engines_list(data);
+}
+
+/*
+ * This sets up a session ID cache to the specified size. Make sure this code
+ * is agnostic to what underlying SSL technology we use.
+ */
+CURLcode Curl_ssl_initsessions(struct SessionHandle *data, size_t amount)
+{
+ struct curl_ssl_session *session;
+
+ if(data->state.session)
+ /* this is just a precaution to prevent multiple inits */
+ return CURLE_OK;
+
+ session = calloc(amount, sizeof(struct curl_ssl_session));
+ if(!session)
+ return CURLE_OUT_OF_MEMORY;
+
+ /* store the info in the SSL section */
+ data->set.ssl.max_ssl_sessions = amount;
+ data->state.session = session;
+ data->state.sessionage = 1; /* this is brand new */
+ return CURLE_OK;
+}
+
+size_t Curl_ssl_version(char *buffer, size_t size)
+{
+ return curlssl_version(buffer, size);
+}
+
+/*
+ * This function tries to determine connection status.
+ *
+ * Return codes:
+ * 1 means the connection is still in place
+ * 0 means the connection has been closed
+ * -1 means the connection status is unknown
+ */
+int Curl_ssl_check_cxn(struct connectdata *conn)
+{
+ return curlssl_check_cxn(conn);
+}
+
+bool Curl_ssl_data_pending(const struct connectdata *conn,
+ int connindex)
+{
+ return curlssl_data_pending(conn, connindex);
+}
+
+void Curl_ssl_free_certinfo(struct SessionHandle *data)
+{
+ int i;
+ struct curl_certinfo *ci = &data->info.certs;
+ if(ci->num_of_certs) {
+ /* free all individual lists used */
+ for(i=0; i<ci->num_of_certs; i++) {
+ curl_slist_free_all(ci->certinfo[i]);
+ ci->certinfo[i] = NULL;
+ }
+ free(ci->certinfo); /* free the actual array too */
+ ci->certinfo = NULL;
+ ci->num_of_certs = 0;
+ }
+}
+
+int Curl_ssl_init_certinfo(struct SessionHandle * data,
+ int num)
+{
+ struct curl_certinfo * ci = &data->info.certs;
+ struct curl_slist * * table;
+
+ /* Initialize the certificate information structures. Return 0 if OK, else 1.
+ */
+ Curl_ssl_free_certinfo(data);
+ ci->num_of_certs = num;
+ table = calloc((size_t) num, sizeof(struct curl_slist *));
+ if(!table)
+ return 1;
+
+ ci->certinfo = table;
+ return 0;
+}
+
+CURLcode Curl_ssl_push_certinfo_len(struct SessionHandle *data,
+ int certnum,
+ const char *label,
+ const char *value,
+ size_t valuelen)
+{
+ struct curl_certinfo * ci = &data->info.certs;
+ char * output;
+ struct curl_slist * nl;
+ CURLcode res = CURLE_OK;
+
+ /* Add an information record for a particular certificate. */
+ output = curl_maprintf("%s:%.*s", label, valuelen, value);
+ if(!output)
+ return CURLE_OUT_OF_MEMORY;
+
+ nl = Curl_slist_append_nodup(ci->certinfo[certnum], output);
+ if(!nl) {
+ free(output);
+ curl_slist_free_all(ci->certinfo[certnum]);
+ res = CURLE_OUT_OF_MEMORY;
+ }
+
+ ci->certinfo[certnum] = nl;
+ return res;
+}
+
+/*
+ * This is a convenience function for push_certinfo_len that takes a zero
+ * terminated value.
+ */
+CURLcode Curl_ssl_push_certinfo(struct SessionHandle *data,
+ int certnum,
+ const char *label,
+ const char *value)
+{
+ size_t valuelen = strlen(value);
+
+ return Curl_ssl_push_certinfo_len(data, certnum, label, value, valuelen);
+}
+
+/* these functions are only provided by some SSL backends */
+
+#ifdef have_curlssl_random
+void Curl_ssl_random(struct SessionHandle *data,
+ unsigned char *entropy,
+ size_t length)
+{
+ curlssl_random(data, entropy, length);
+}
+#endif
+
+#ifdef have_curlssl_md5sum
+void Curl_ssl_md5sum(unsigned char *tmp, /* input */
+ size_t tmplen,
+ unsigned char *md5sum, /* output */
+ size_t md5len)
+{
+ curlssl_md5sum(tmp, tmplen, md5sum, md5len);
+}
+#endif
+
+#endif /* USE_SSL */
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