mirror of
https://github.com/moparisthebest/curl
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83305cbf9f
"The BSD version of PolarSSL was made for migratory purposes only and is not maintained. The GPL version of PolarSSL is actually the only actively developed version, so I would be very reluctant to use the BSD version." / Paul Bakker, PolarSSL hacker. Signed-off-by: Hoi-Ho Chan <hoiho.chan@gmail.com>
376 lines
10 KiB
C
376 lines
10 KiB
C
/***************************************************************************
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* _ _ ____ _
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* Project ___| | | | _ \| |
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* / __| | | | |_) | |
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* | (__| |_| | _ <| |___
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* \___|\___/|_| \_\_____|
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*
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* Copyright (C) 2010, Hoi-Ho Chan, <hoiho.chan@gmail.com>
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*
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* This software is licensed as described in the file COPYING, which
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* you should have received as part of this distribution. The terms
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* are also available at http://curl.haxx.se/docs/copyright.html.
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*
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* You may opt to use, copy, modify, merge, publish, distribute and/or sell
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* copies of the Software, and permit persons to whom the Software is
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* furnished to do so, under the terms of the COPYING file.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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***************************************************************************/
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/*
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* Source file for all PolarSSL-specific code for the TLS/SSL layer. No code
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* but sslgen.c should ever call or use these functions.
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*
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*/
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#include "setup.h"
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#ifdef USE_POLARSSL
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#include <string.h>
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#include <stdlib.h>
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#include <ctype.h>
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#ifdef HAVE_SYS_SOCKET_H
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#include <sys/socket.h>
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#endif
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#include <polarssl/net.h>
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#include <polarssl/ssl.h>
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#include <polarssl/havege.h>
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#include <polarssl/certs.h>
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#include <polarssl/x509.h>
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#include "urldata.h"
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#include "sendf.h"
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#include "inet_pton.h"
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#include "polarssl.h"
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#include "sslgen.h"
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#include "parsedate.h"
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#include "connect.h" /* for the connect timeout */
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#include "select.h"
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#include "rawstr.h"
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#define _MPRINTF_REPLACE /* use our functions only */
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#include <curl/mprintf.h>
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#include "curl_memory.h"
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/* The last #include file should be: */
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#include "memdebug.h"
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/* Define this to enable lots of debugging for PolarSSL */
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#undef POLARSSL_DEBUG
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#ifdef POLARSSL_DEBUG
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static void polarssl_debug(void *context, int level, char *line)
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{
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struct SessionHandle *data = NULL;
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if(!context)
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return;
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data = (struct SessionHandle *)context;
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infof(data, "%s", line);
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}
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#else
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#endif
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static Curl_recv polarssl_recv;
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static Curl_send polarssl_send;
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/*
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* This function loads all the client/CA certificates and CRLs. Setup the TLS
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* layer and do all necessary magic.
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*/
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CURLcode
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Curl_polarssl_connect(struct connectdata *conn,
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int sockindex)
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{
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struct SessionHandle *data = conn->data;
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bool sni = TRUE; /* default is SNI enabled */
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int ret = -1;
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#ifdef ENABLE_IPV6
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struct in6_addr addr;
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#else
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struct in_addr addr;
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#endif
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void *old_session = NULL;
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size_t old_session_size = 0;
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char buffer[1024];
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if(conn->ssl[sockindex].state == ssl_connection_complete)
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return CURLE_OK;
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/* PolarSSL only supports SSLv3 and TLSv1 */
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if(data->set.ssl.version == CURL_SSLVERSION_SSLv2) {
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failf(data, "PolarSSL does not support SSLv2");
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return CURLE_SSL_CONNECT_ERROR;
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} else if(data->set.ssl.version == CURL_SSLVERSION_SSLv3) {
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sni = FALSE; /* SSLv3 has no SNI */
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}
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havege_init(&conn->ssl[sockindex].hs);
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/* Load the trusted CA */
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memset(&conn->ssl[sockindex].cacert, 0, sizeof(x509_cert));
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if(data->set.str[STRING_SSL_CAFILE]) {
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ret = x509parse_crtfile(&conn->ssl[sockindex].cacert,
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data->set.str[STRING_SSL_CAFILE]);
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if(ret) {
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failf(data, "Error reading ca cert file %s: -0x%04X",
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data->set.str[STRING_SSL_CAFILE], -ret);
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if(data->set.ssl.verifypeer)
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return CURLE_SSL_CACERT_BADFILE;
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}
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}
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/* Load the client certificate */
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memset(&conn->ssl[sockindex].clicert, 0, sizeof(x509_cert));
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if(data->set.str[STRING_CERT]) {
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ret = x509parse_crtfile(&conn->ssl[sockindex].clicert,
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data->set.str[STRING_CERT]);
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if(ret) {
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failf(data, "Error reading client cert file %s: -0x%04X",
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data->set.str[STRING_CERT], -ret);
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return CURLE_SSL_CERTPROBLEM;
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}
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}
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/* Load the client private key */
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if(data->set.str[STRING_KEY]) {
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ret = x509parse_keyfile(&conn->ssl[sockindex].rsa,
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data->set.str[STRING_KEY],
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data->set.str[STRING_KEY_PASSWD]);
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if(ret) {
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failf(data, "Error reading private key %s: -0x%04X",
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data->set.str[STRING_KEY], -ret);
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return CURLE_SSL_CERTPROBLEM;
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}
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}
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/* Load the CRL */
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memset(&conn->ssl[sockindex].crl, 0, sizeof(x509_crl));
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if(data->set.str[STRING_SSL_CRLFILE]) {
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ret = x509parse_crlfile(&conn->ssl[sockindex].crl,
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data->set.str[STRING_SSL_CRLFILE]);
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if(ret) {
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failf(data, "Error reading CRL file %s: -0x%04X",
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data->set.str[STRING_SSL_CRLFILE], -ret);
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return CURLE_SSL_CRL_BADFILE;
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}
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}
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infof(data, "PolarSSL: Connected to %s:%d\n",
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conn->host.name, conn->remote_port);
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havege_init(&conn->ssl[sockindex].hs);
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if(ssl_init(&conn->ssl[sockindex].ssl)) {
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failf(data, "PolarSSL: ssl_init failed");
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return CURLE_SSL_CONNECT_ERROR;
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}
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ssl_set_endpoint(&conn->ssl[sockindex].ssl, SSL_IS_CLIENT);
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ssl_set_authmode(&conn->ssl[sockindex].ssl, SSL_VERIFY_OPTIONAL);
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ssl_set_rng(&conn->ssl[sockindex].ssl, havege_rand,
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&conn->ssl[sockindex].hs);
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ssl_set_bio(&conn->ssl[sockindex].ssl,
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net_recv, &conn->sock[sockindex],
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net_send, &conn->sock[sockindex]);
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ssl_set_ciphers(&conn->ssl[sockindex].ssl, ssl_default_ciphers);
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if(!Curl_ssl_getsessionid(conn, &old_session, &old_session_size)) {
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memcpy(&conn->ssl[sockindex].ssn, old_session, old_session_size);
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infof(data, "PolarSSL re-using session\n");
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}
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ssl_set_session(&conn->ssl[sockindex].ssl, 1, 600,
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&conn->ssl[sockindex].ssn);
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ssl_set_ca_chain(&conn->ssl[sockindex].ssl,
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&conn->ssl[sockindex].cacert,
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&conn->ssl[sockindex].crl,
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conn->host.name);
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ssl_set_own_cert(&conn->ssl[sockindex].ssl,
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&conn->ssl[sockindex].clicert, &conn->ssl[sockindex].rsa);
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if(!Curl_inet_pton(AF_INET, conn->host.name, &addr) &&
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#ifdef ENABLE_IPV6
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!Curl_inet_pton(AF_INET6, conn->host.name, &addr) &&
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#endif
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sni && ssl_set_hostname(&conn->ssl[sockindex].ssl, conn->host.name)) {
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infof(data, "WARNING: failed to configure "
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"server name indication (SNI) TLS extension\n");
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}
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infof(data, "PolarSSL: performing SSL/TLS handshake...\n");
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#ifdef POLARSSL_DEBUG
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ssl_set_dbg(&conn->ssl[sockindex].ssl, polarssl_debug, data);
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#endif
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do {
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if (!(ret = ssl_handshake(&conn->ssl[sockindex].ssl))) {
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break;
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} else if(ret != POLARSSL_ERR_NET_TRY_AGAIN) {
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failf(data, "ssl_handshake returned -0x%04X", -ret);
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return CURLE_SSL_CONNECT_ERROR;
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} else {
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/* wait for data from server... */
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long timeout_ms = Curl_timeleft(conn, NULL, TRUE);
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if(timeout_ms < 0) {
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failf(data, "SSL connection timeout");
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return CURLE_OPERATION_TIMEDOUT;
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}
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switch(Curl_socket_ready(conn->sock[sockindex],
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CURL_SOCKET_BAD, timeout_ms)) {
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case 0:
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failf(data, "SSL handshake timeout");
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return CURLE_OPERATION_TIMEDOUT;
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break;
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case CURL_CSELECT_IN:
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continue;
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break;
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default:
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return CURLE_SSL_CONNECT_ERROR;
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break;
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}
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}
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} while (1);
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infof(data, "PolarSSL: Handshake complete, cipher is %s\n",
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ssl_get_cipher(&conn->ssl[sockindex].ssl));
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ret = ssl_get_verify_result(&conn->ssl[sockindex].ssl);
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if(ret && data->set.ssl.verifypeer) {
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if(ret & BADCERT_EXPIRED)
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failf(data, "Cert verify failed: BADCERT_EXPIRED\n");
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if(ret & BADCERT_REVOKED)
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failf(data, "Cert verify failed: BADCERT_REVOKED");
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if(ret & BADCERT_CN_MISMATCH)
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failf(data, "Cert verify failed: BADCERT_CN_MISMATCH");
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if(ret & BADCERT_NOT_TRUSTED)
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failf(data, "Cert verify failed: BADCERT_NOT_TRUSTED");
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return CURLE_SSL_CACERT;
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}
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if(conn->ssl[sockindex].ssl.peer_cert) {
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/* If the session was resumed, there will be no peer certs */
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memset(buffer, 0, sizeof(buffer));
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if(x509parse_cert_info(buffer, sizeof(buffer), (char *)"* ",
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conn->ssl[sockindex].ssl.peer_cert) != -1)
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infof(data, "Dumping cert info:\n%s\n", buffer);
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}
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conn->ssl[sockindex].state = ssl_connection_complete;
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conn->recv[sockindex] = polarssl_recv;
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conn->send[sockindex] = polarssl_send;
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/* Save the current session data for possible re-use */
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{
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void *new_session = malloc(sizeof(conn->ssl[sockindex].ssn));
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if(new_session) {
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memcpy(new_session, &conn->ssl[sockindex].ssn,
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sizeof(conn->ssl[sockindex].ssn));
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if(old_session)
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Curl_ssl_delsessionid(conn, old_session);
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return Curl_ssl_addsessionid(conn, new_session,
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sizeof(conn->ssl[sockindex].ssn));
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}
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}
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return CURLE_OK;
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}
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static ssize_t polarssl_send(struct connectdata *conn,
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int sockindex,
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const void *mem,
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size_t len,
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CURLcode *curlcode)
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{
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int ret = -1;
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ret = ssl_write(&conn->ssl[sockindex].ssl,
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(unsigned char *)mem, len);
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if(ret < 0) {
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*curlcode = (ret == POLARSSL_ERR_NET_TRY_AGAIN) ?
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CURLE_AGAIN : CURLE_SEND_ERROR;
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ret = -1;
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}
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return ret;
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}
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void Curl_polarssl_close_all(struct SessionHandle *data)
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{
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(void)data;
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}
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void Curl_polarssl_close(struct connectdata *conn, int sockindex)
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{
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rsa_free(&conn->ssl[sockindex].rsa);
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x509_free(&conn->ssl[sockindex].clicert);
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x509_free(&conn->ssl[sockindex].cacert);
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x509_crl_free(&conn->ssl[sockindex].crl);
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ssl_free(&conn->ssl[sockindex].ssl);
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}
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static ssize_t polarssl_recv(struct connectdata *conn,
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int num,
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char *buf,
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size_t buffersize,
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CURLcode *curlcode)
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{
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int ret = -1;
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ssize_t len = -1;
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memset(buf, 0, buffersize);
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ret = ssl_read(&conn->ssl[num].ssl, (unsigned char *)buf, buffersize);
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if(ret <= 0) {
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*curlcode = (ret == POLARSSL_ERR_NET_TRY_AGAIN) ?
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CURLE_AGAIN : CURLE_RECV_ERROR;
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return -1;
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}
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len = ret;
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return len;
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}
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void Curl_polarssl_session_free(void *ptr)
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{
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free(ptr);
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}
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size_t Curl_polarssl_version(char *buffer, size_t size)
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{
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return snprintf(buffer, size, "PolarSSL");
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}
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#endif
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