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-rw-r--r--lib/sslgen.c472
1 files changed, 0 insertions, 472 deletions
diff --git a/lib/sslgen.c b/lib/sslgen.c
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index bd8dc172..00000000
--- a/lib/sslgen.c
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-/***************************************************************************
- * _ _ ____ _
- * Project ___| | | | _ \| |
- * / __| | | | |_) | |
- * | (__| |_| | _ <| |___
- * \___|\___/|_| \_\_____|
- *
- * Copyright (C) 1998 - 2010, 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_polarssl_ - prefix for PolarSSL 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 "setup.h"
-
-#include <string.h>
-#include <stdlib.h>
-#include <ctype.h>
-#ifdef HAVE_SYS_SOCKET_H
-#include <sys/socket.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 "polarssl.h" /* PolarSSL versions */
-#include "sendf.h"
-#include "rawstr.h"
-#include "url.h"
-#include "curl_memory.h"
-#include "progress.h"
-/* The last #include file should be: */
-#include "memdebug.h"
-
-static bool safe_strequal(char* str1, char* str2)
-{
- if(str1 && str2)
- /* both pointers point to something then compare them */
- return (bool)(0 != Curl_raw_equal(str1, str2));
- else
- /* if both pointers are NULL then treat them as equal */
- return (bool)(!str1 && !str2);
-}
-
-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);
-}
-
-#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)
-{
-#ifdef curlssl_connect_nonblocking
- CURLcode res;
- /* mark this is being ssl requested from here on. */
- conn->ssl[sockindex].use = TRUE;
- res = curlssl_connect_nonblocking(conn, sockindex, done);
- if(!res && *done == TRUE)
- Curl_pgrsTime(conn->data, TIMER_APPCONNECT); /* SSL is connected */
- return res;
-#else
- *done = TRUE; /* fallback to BLOCKING */
- conn->ssl[sockindex].use = TRUE;
- return curlssl_connect(conn, sockindex);
-#endif /* non-blocking connect support */
-}
-
-/*
- * 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;
- long i;
-
- if(!conn->ssl_config.sessionid)
- /* session ID re-use is disabled */
- return TRUE;
-
- for(i=0; i< data->set.ssl.numsessions; 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! */
- data->state.sessionage++; /* increase general age */
- check->age = data->state.sessionage; /* set this as used in this age */
- *ssl_sessionid = check->sessionid;
- if(idsize)
- *idsize = check->idsize;
- return FALSE;
- }
- }
- *ssl_sessionid = NULL;
- return TRUE;
-}
-
-/*
- * Kill a single session ID entry in the cache.
- */
-static int 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);
- session->name = NULL; /* no name */
-
- return 0; /* ok */
- }
- else
- return 1;
-}
-
-/*
- * Delete the given session ID from the cache.
- */
-void Curl_ssl_delsessionid(struct connectdata *conn, void *ssl_sessionid)
-{
- int i;
- for(i=0; i< conn->data->set.ssl.numsessions; i++) {
- struct curl_ssl_session *check = &conn->data->state.session[i];
-
- if (check->sessionid == ssl_sessionid) {
- kill_session(check);
- break;
- }
- }
-}
-
-/*
- * 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)
-{
- long 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;
-
- /* 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) */
-
- /* find an empty slot for us, or find the oldest */
- for(i=1; (i<data->set.ssl.numsessions) &&
- 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.numsessions)
- /* cache is full, we must "kill" the oldest entry! */
- 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 = data->state.sessionage; /* 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 */
-
- if(!Curl_clone_ssl_config(&conn->ssl_config, &store->ssl_config))
- return CURLE_OUT_OF_MEMORY;
-
- return CURLE_OK;
-}
-
-
-void Curl_ssl_close_all(struct SessionHandle *data)
-{
- long i;
- /* kill the session ID cache */
- if(data->state.session) {
- for(i=0; i< data->set.ssl.numsessions; i++)
- /* the single-killer function handles empty table slots */
- kill_session(&data->state.session[i]);
-
- /* free the cache data */
- free(data->state.session);
- data->state.session = NULL;
- }
-
- 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;
-
- 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, long 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.numsessions = 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]);
- free(ci->certinfo); /* free the actual array too */
- ci->num_of_certs = 0;
- }
-}
-#endif /* USE_SSL */
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