From 682f23e7bb4a52bedf46eff5c4859e1308eda124 Mon Sep 17 00:00:00 2001 From: Michał Cichoń Date: Tue, 25 Aug 2015 19:56:24 +0200 Subject: Update build ref --- libcurl/src/lib/vtls/vtls.c | 895 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 895 insertions(+) create mode 100644 libcurl/src/lib/vtls/vtls.c (limited to 'libcurl/src/lib/vtls/vtls.c') diff --git a/libcurl/src/lib/vtls/vtls.c b/libcurl/src/lib/vtls/vtls.c new file mode 100644 index 0000000..b7f7059 --- /dev/null +++ b/libcurl/src/lib/vtls/vtls.c @@ -0,0 +1,895 @@ +/*************************************************************************** + * _ _ ____ _ + * Project ___| | | | _ \| | + * / __| | | | |_) | | + * | (__| |_| | _ <| |___ + * \___|\___/|_| \_\_____| + * + * + * 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_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 +#endif +#ifdef HAVE_SYS_STAT_H +#include +#endif +#ifdef HAVE_FCNTL_H +#include +#endif + +#include "../urldata.h" + +#include "vtls.h" /* generic SSL protos etc */ +#include "../slist.h" +#include "../sendf.h" +#include "../rawstr.h" +#include "../url.h" +#include "../progress.h" +#include "../share.h" +#include "../timeval.h" +#include "../curl_md5.h" +#include "../warnless.h" +#include "../curl_base64.h" +#include "../curl_printf.h" + +/* The last #include files should be: */ +#include "../curl_memory.h" +#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<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; +} + +CURL_STATIC 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; +} + +CURL_STATIC 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! + * + */ + +CURL_STATIC unsigned int Curl_rand(struct SessionHandle *data) +{ + unsigned int r = 0; + static unsigned int randseed; + static bool seeded = FALSE; + +#ifdef CURLDEBUG + char *force_entropy = getenv("CURL_ENTROPY"); + if(force_entropy) { + if(!seeded) { + size_t elen = strlen(force_entropy); + size_t clen = sizeof(randseed); + size_t min = elen < clen ? elen : clen; + memcpy((char *)&randseed, force_entropy, min); + seeded = TRUE; + } + else + randseed++; + return randseed; + } +#endif + + /* data may be NULL! */ + if(!Curl_ssl_random(data, (unsigned char *)&r, sizeof(r))) + return r; + + /* If Curl_ssl_random() returns non-zero it couldn't offer randomness and we + instead perform a "best effort" */ + +#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(); + infof(data, "WARNING: Using weak random seed\n"); + 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); +} + +CURL_STATIC int Curl_ssl_backend(void) +{ + return (int)CURL_SSL_BACKEND; +} + +#ifdef USE_SSL + +/* "global" init done? */ +static bool init_ssl=FALSE; + +/** + * Global SSL init + * + * @retval 0 error initializing SSL + * @retval 1 SSL initialized successfully + */ +CURL_STATIC 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 */ +CURL_STATIC void Curl_ssl_cleanup(void) +{ + if(init_ssl) { + /* only cleanup if we did a previous init */ + curlssl_cleanup(); + init_ssl = FALSE; + } +} + +static bool ssl_prefs_check(struct SessionHandle *data) +{ + /* check for CURLOPT_SSLVERSION invalid parameter value */ + if((data->set.ssl.version < 0) + || (data->set.ssl.version >= CURL_SSLVERSION_LAST)) { + failf(data, "Unrecognized parameter value passed via CURLOPT_SSLVERSION"); + return FALSE; + } + return TRUE; +} + +CURL_STATIC CURLcode +Curl_ssl_connect(struct connectdata *conn, int sockindex) +{ + CURLcode result; + + if(!ssl_prefs_check(conn->data)) + return CURLE_SSL_CONNECT_ERROR; + + /* mark this is being ssl-enabled from here on. */ + conn->ssl[sockindex].use = TRUE; + conn->ssl[sockindex].state = ssl_connection_negotiating; + + result = curlssl_connect(conn, sockindex); + + if(!result) + Curl_pgrsTime(conn->data, TIMER_APPCONNECT); /* SSL is connected */ + + return result; +} + +CURL_STATIC CURLcode +Curl_ssl_connect_nonblocking(struct connectdata *conn, int sockindex, + bool *done) +{ + CURLcode result; + + if(!ssl_prefs_check(conn->data)) + return CURLE_SSL_CONNECT_ERROR; + + /* mark this is being ssl requested from here on. */ + conn->ssl[sockindex].use = TRUE; +#ifdef curlssl_connect_nonblocking + result = curlssl_connect_nonblocking(conn, sockindex, done); +#else + *done = TRUE; /* fallback to BLOCKING */ + result = curlssl_connect(conn, sockindex); +#endif /* non-blocking connect support */ + if(!result && *done) + Curl_pgrsTime(conn->data, TIMER_APPCONNECT); /* SSL is connected */ + return result; +} + +/* + * 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. + */ +CURL_STATIC bool 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. + */ +CURL_STATIC 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. + */ +CURL_STATIC 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. + */ +CURL_STATIC 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 */ + /* 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; +} + + +CURL_STATIC 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); +} + +CURL_STATIC void Curl_ssl_close(struct connectdata *conn, int sockindex) +{ + DEBUGASSERT((sockindex <= 1) && (sockindex >= -1)); + curlssl_close(conn, sockindex); +} + +CURL_STATIC 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 + */ +CURL_STATIC CURLcode Curl_ssl_set_engine(struct SessionHandle *data, const char *engine) +{ + return curlssl_set_engine(data, engine); +} + +/* Selects the default SSL crypto engine + */ +CURL_STATIC CURLcode Curl_ssl_set_engine_default(struct SessionHandle *data) +{ + return curlssl_set_engine_default(data); +} + +/* Return list of OpenSSL crypto engine names. */ +CURL_STATIC 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. + */ +CURL_STATIC 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; +} + +CURL_STATIC 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 + */ +CURL_STATIC int Curl_ssl_check_cxn(struct connectdata *conn) +{ + return curlssl_check_cxn(conn); +} + +CURL_STATIC bool Curl_ssl_data_pending(const struct connectdata *conn, + int connindex) +{ + return curlssl_data_pending(conn, connindex); +} + +CURL_STATIC 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; inum_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; + } +} + +CURL_STATIC CURLcode Curl_ssl_init_certinfo(struct SessionHandle *data, int num) +{ + struct curl_certinfo *ci = &data->info.certs; + struct curl_slist **table; + + /* Free any previous certificate information structures */ + Curl_ssl_free_certinfo(data); + + /* Allocate the required certificate information structures */ + table = calloc((size_t) num, sizeof(struct curl_slist *)); + if(!table) + return CURLE_OUT_OF_MEMORY; + + ci->num_of_certs = num; + ci->certinfo = table; + + return CURLE_OK; +} + +/* + * 'value' is NOT a zero terminated string + */ +CURL_STATIC 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 result = CURLE_OK; + size_t labellen = strlen(label); + size_t outlen = labellen + 1 + valuelen + 1; /* label:value\0 */ + + output = malloc(outlen); + if(!output) + return CURLE_OUT_OF_MEMORY; + + /* sprintf the label and colon */ + snprintf(output, outlen, "%s:", label); + + /* memcpy the value (it might not be zero terminated) */ + memcpy(&output[labellen+1], value, valuelen); + + /* zero terminate the output */ + output[labellen + 1 + valuelen] = 0; + + nl = Curl_slist_append_nodup(ci->certinfo[certnum], output); + if(!nl) { + free(output); + curl_slist_free_all(ci->certinfo[certnum]); + result = CURLE_OUT_OF_MEMORY; + } + + ci->certinfo[certnum] = nl; + return result; +} + +/* + * This is a convenience function for push_certinfo_len that takes a zero + * terminated value. + */ +CURL_STATIC 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); +} + +CURL_STATIC int Curl_ssl_random(struct SessionHandle *data, + unsigned char *entropy, + size_t length) +{ + return curlssl_random(data, entropy, length); +} + +/* + * Public key pem to der conversion + */ + +static CURLcode pubkey_pem_to_der(const char *pem, + unsigned char **der, size_t *der_len) +{ + char *stripped_pem, *begin_pos, *end_pos; + size_t pem_count, stripped_pem_count = 0, pem_len; + CURLcode result; + + /* if no pem, exit. */ + if(!pem) + return CURLE_BAD_CONTENT_ENCODING; + + begin_pos = strstr(pem, "-----BEGIN PUBLIC KEY-----"); + if(!begin_pos) + return CURLE_BAD_CONTENT_ENCODING; + + pem_count = begin_pos - pem; + /* Invalid if not at beginning AND not directly following \n */ + if(0 != pem_count && '\n' != pem[pem_count - 1]) + return CURLE_BAD_CONTENT_ENCODING; + + /* 26 is length of "-----BEGIN PUBLIC KEY-----" */ + pem_count += 26; + + /* Invalid if not directly following \n */ + end_pos = strstr(pem + pem_count, "\n-----END PUBLIC KEY-----"); + if(!end_pos) + return CURLE_BAD_CONTENT_ENCODING; + + pem_len = end_pos - pem; + + stripped_pem = malloc(pem_len - pem_count + 1); + if(!stripped_pem) + return CURLE_OUT_OF_MEMORY; + + /* + * Here we loop through the pem array one character at a time between the + * correct indices, and place each character that is not '\n' or '\r' + * into the stripped_pem array, which should represent the raw base64 string + */ + while(pem_count < pem_len) { + if('\n' != pem[pem_count] && '\r' != pem[pem_count]) + stripped_pem[stripped_pem_count++] = pem[pem_count]; + ++pem_count; + } + /* Place the null terminator in the correct place */ + stripped_pem[stripped_pem_count] = '\0'; + + result = Curl_base64_decode(stripped_pem, der, der_len); + + Curl_safefree(stripped_pem); + + return result; +} + +/* + * Generic pinned public key check. + */ + +CURL_STATIC CURLcode Curl_pin_peer_pubkey(const char *pinnedpubkey, + const unsigned char *pubkey, size_t pubkeylen) +{ + FILE *fp; + unsigned char *buf = NULL, *pem_ptr = NULL; + long filesize; + size_t size, pem_len; + CURLcode pem_read; + CURLcode result = CURLE_SSL_PINNEDPUBKEYNOTMATCH; + + /* if a path wasn't specified, don't pin */ + if(!pinnedpubkey) + return CURLE_OK; + if(!pubkey || !pubkeylen) + return result; + fp = fopen(pinnedpubkey, "rb"); + if(!fp) + return result; + + do { + /* Determine the file's size */ + if(fseek(fp, 0, SEEK_END)) + break; + filesize = ftell(fp); + if(fseek(fp, 0, SEEK_SET)) + break; + if(filesize < 0 || filesize > MAX_PINNED_PUBKEY_SIZE) + break; + + /* + * if the size of our certificate is bigger than the file + * size then it can't match + */ + size = curlx_sotouz((curl_off_t) filesize); + if(pubkeylen > size) + break; + + /* + * Allocate buffer for the pinned key + * With 1 additional byte for null terminator in case of PEM key + */ + buf = malloc(size + 1); + if(!buf) + break; + + /* Returns number of elements read, which should be 1 */ + if((int) fread(buf, size, 1, fp) != 1) + break; + + /* If the sizes are the same, it can't be base64 encoded, must be der */ + if(pubkeylen == size) { + if(!memcmp(pubkey, buf, pubkeylen)) + result = CURLE_OK; + break; + } + + /* + * Otherwise we will assume it's PEM and try to decode it + * after placing null terminator + */ + buf[size] = '\0'; + pem_read = pubkey_pem_to_der((const char *)buf, &pem_ptr, &pem_len); + /* if it wasn't read successfully, exit */ + if(pem_read) + break; + + /* + * if the size of our certificate doesn't match the size of + * the decoded file, they can't be the same, otherwise compare + */ + if(pubkeylen == pem_len && !memcmp(pubkey, pem_ptr, pubkeylen)) + result = CURLE_OK; + } while(0); + + Curl_safefree(buf); + Curl_safefree(pem_ptr); + fclose(fp); + + return result; +} + +#ifndef CURL_DISABLE_CRYPTO_AUTH +CURL_STATIC CURLcode Curl_ssl_md5sum(unsigned char *tmp, /* input */ + size_t tmplen, + unsigned char *md5sum, /* output */ + size_t md5len) +{ +#ifdef curlssl_md5sum + curlssl_md5sum(tmp, tmplen, md5sum, md5len); +#else + MD5_context *MD5pw; + + (void) md5len; + + MD5pw = Curl_MD5_init(Curl_DIGEST_MD5); + if(!MD5pw) + return CURLE_OUT_OF_MEMORY; + Curl_MD5_update(MD5pw, tmp, curlx_uztoui(tmplen)); + Curl_MD5_final(MD5pw, md5sum); +#endif + return CURLE_OK; +} +#endif + +/* + * Check whether the SSL backend supports the status_request extension. + */ +CURL_STATIC bool Curl_ssl_cert_status_request(void) +{ +#ifdef curlssl_cert_status_request + return curlssl_cert_status_request(); +#else + return FALSE; +#endif +} + +/* + * Check whether the SSL backend supports false start. + */ +CURL_STATIC bool Curl_ssl_false_start(void) +{ +#ifdef curlssl_false_start + return curlssl_false_start(); +#else + return FALSE; +#endif +} + +#endif /* USE_SSL */ -- cgit v1.2.3