2015-10-19 08:25:34 -04:00
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/***************************************************************************
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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 - 2011, Hoi-Ho Chan, <hoiho.chan@gmail.com>
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* Copyright (C) 2012 - 2015, Daniel Stenberg, <daniel@haxx.se>, et al.
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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 mbedTSL-specific code for the TLS/SSL layer. No code
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* but vtls.c should ever call or use these functions.
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*
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*/
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#include "curl_setup.h"
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#ifdef USE_MBEDTLS
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#include <mbedtls/net.h>
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#include <mbedtls/ssl.h>
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#include <mbedtls/certs.h>
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#include <mbedtls/x509.h>
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#include <mbedtls/version.h>
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#include <mbedtls/error.h>
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#include <mbedtls/entropy.h>
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#include <mbedtls/ctr_drbg.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 "mbedtls.h"
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#include "vtls.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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#include "polarssl_threadlock.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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/* apply threading? */
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#if defined(USE_THREADS_POSIX) || defined(USE_THREADS_WIN32)
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#define THREADING_SUPPORT
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#endif
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#if defined(THREADING_SUPPORT)
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static mbedtls_entropy_context entropy;
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static int entropy_init_initialized = 0;
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/* start of entropy_init_mutex() */
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static void entropy_init_mutex(mbedtls_entropy_context *ctx)
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{
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/* lock 0 = entropy_init_mutex() */
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2015-10-23 10:14:29 -04:00
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Curl_polarsslthreadlock_lock_function(0);
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2015-10-19 08:25:34 -04:00
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if(entropy_init_initialized == 0) {
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mbedtls_entropy_init(ctx);
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entropy_init_initialized = 1;
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}
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2015-10-23 10:14:29 -04:00
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Curl_polarsslthreadlock_unlock_function(0);
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2015-10-19 08:25:34 -04:00
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}
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/* end of entropy_init_mutex() */
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/* start of entropy_func_mutex() */
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static int entropy_func_mutex(void *data, unsigned char *output, size_t len)
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{
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int ret;
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/* lock 1 = entropy_func_mutex() */
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2015-10-23 10:14:29 -04:00
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Curl_polarsslthreadlock_lock_function(1);
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2015-10-19 08:25:34 -04:00
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ret = mbedtls_entropy_func(data, output, len);
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2015-10-23 10:14:29 -04:00
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Curl_polarsslthreadlock_unlock_function(1);
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2015-10-19 08:25:34 -04:00
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return ret;
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}
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/* end of entropy_func_mutex() */
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#endif /* THREADING_SUPPORT */
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/* Define this to enable lots of debugging for mbedTLS */
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#undef MBEDTLS_DEBUG
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#ifdef MBEDTLS_DEBUG
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static void mbedtls_debug(void *context, int level, const 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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(void) level;
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}
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#else
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#endif
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/* ALPN for http2? */
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#ifdef USE_NGHTTP2
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# undef HAS_ALPN
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# ifdef MBEDTLS_SSL_ALPN
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# define HAS_ALPN
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# endif
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#endif
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2015-10-21 03:30:31 -04:00
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/*
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* profile
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*/
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const mbedtls_x509_crt_profile mbedtls_x509_crt_profile_fr =
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{
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/* Hashes from SHA-1 and above */
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MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA1 ) |
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MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_RIPEMD160 ) |
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MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA224 ) |
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MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA256 ) |
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MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA384 ) |
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MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA512 ),
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0xFFFFFFF, /* Any PK alg */
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0xFFFFFFF, /* Any curve */
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1024, /* RSA min key len */
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};
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2015-10-19 08:25:34 -04:00
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static Curl_recv mbedtls_recv;
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static Curl_send mbedtls_send;
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static CURLcode
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mbedtls_connect_step1(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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struct ssl_connect_data* connssl = &conn->ssl[sockindex];
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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 errorbuf[128];
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errorbuf[0]=0;
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/* mbedTLS only supports SSLv3 and TLSv1 */
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if(data->set.ssl.version == CURL_SSLVERSION_SSLv2) {
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failf(data, "mbedTLS does not support SSLv2");
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return CURLE_SSL_CONNECT_ERROR;
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}
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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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#ifdef THREADING_SUPPORT
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entropy_init_mutex(&entropy);
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2015-10-23 18:46:03 -04:00
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mbedtls_ctr_drbg_init(&connssl->ctr_drbg);
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2015-10-19 08:25:34 -04:00
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2015-10-23 18:46:03 -04:00
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ret = mbedtls_ctr_drbg_seed(&connssl->ctr_drbg, entropy_func_mutex,
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&entropy, connssl->ssn.id,
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connssl->ssn.id_len);
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if(ret) {
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#ifdef MBEDTLS_ERROR_C
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2015-10-23 18:46:03 -04:00
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mbedtls_strerror(ret, errorbuf, sizeof(errorbuf));
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2015-10-19 08:25:34 -04:00
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#endif /* MBEDTLS_ERROR_C */
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failf(data, "Failed - mbedTLS: ctr_drbg_init returned (-0x%04X) %s\n",
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-ret, errorbuf);
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2015-10-19 08:25:34 -04:00
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}
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#else
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mbedtls_entropy_init(&connssl->entropy);
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mbedtls_ctr_drbg_init(&connssl->ctr_drbg);
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ret = mbedtls_ctr_drbg_seed(&connssl->ctr_drbg, mbedtls_entropy_func,
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&connssl->entropy, connssl->ssn.id,
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connssl->ssn.id_len);
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if(ret) {
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#ifdef MBEDTLS_ERROR_C
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mbedtls_strerror(ret, errorbuf, sizeof(errorbuf));
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#endif /* MBEDTLS_ERROR_C */
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failf(data, "Failed - mbedTLS: ctr_drbg_init returned (-0x%04X) %s\n",
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-ret, errorbuf);
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}
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#endif /* THREADING_SUPPORT */
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/* Load the trusted CA */
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memset(&connssl->cacert, 0, sizeof(mbedtls_x509_crt));
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if(data->set.str[STRING_SSL_CAFILE]) {
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ret = mbedtls_x509_crt_parse_file(&connssl->cacert,
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data->set.str[STRING_SSL_CAFILE]);
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if(ret<0) {
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#ifdef MBEDTLS_ERROR_C
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mbedtls_strerror(ret, errorbuf, sizeof(errorbuf));
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#endif /* MBEDTLS_ERROR_C */
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failf(data, "Error reading ca cert file %s - mbedTLS: (-0x%04X) %s",
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data->set.str[STRING_SSL_CAFILE], -ret, errorbuf);
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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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if(data->set.str[STRING_SSL_CAPATH]) {
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ret = mbedtls_x509_crt_parse_path(&connssl->cacert,
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data->set.str[STRING_SSL_CAPATH]);
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if(ret<0) {
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#ifdef MBEDTLS_ERROR_C
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mbedtls_strerror(ret, errorbuf, sizeof(errorbuf));
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#endif /* MBEDTLS_ERROR_C */
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failf(data, "Error reading ca cert path %s - mbedTLS: (-0x%04X) %s",
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data->set.str[STRING_SSL_CAPATH], -ret, errorbuf);
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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(&connssl->clicert, 0, sizeof(mbedtls_x509_crt));
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if(data->set.str[STRING_CERT]) {
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ret = mbedtls_x509_crt_parse_file(&connssl->clicert,
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data->set.str[STRING_CERT]);
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if(ret) {
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#ifdef MBEDTLS_ERROR_C
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mbedtls_strerror(ret, errorbuf, sizeof(errorbuf));
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#endif /* MBEDTLS_ERROR_C */
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failf(data, "Error reading client cert file %s - mbedTLS: (-0x%04X) %s",
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data->set.str[STRING_CERT], -ret, errorbuf);
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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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mbedtls_pk_init(&connssl->pk);
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ret = mbedtls_pk_parse_keyfile(&connssl->pk, data->set.str[STRING_KEY],
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data->set.str[STRING_KEY_PASSWD]);
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if(ret == 0 && !mbedtls_pk_can_do(&connssl->pk, MBEDTLS_PK_RSA))
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ret = MBEDTLS_ERR_PK_TYPE_MISMATCH;
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if(ret) {
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#ifdef MBEDTLS_ERROR_C
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mbedtls_strerror(ret, errorbuf, sizeof(errorbuf));
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#endif /* MBEDTLS_ERROR_C */
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failf(data, "Error reading private key %s - mbedTLS: (-0x%04X) %s",
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data->set.str[STRING_KEY], -ret, errorbuf);
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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(&connssl->crl, 0, sizeof(mbedtls_x509_crl));
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if(data->set.str[STRING_SSL_CRLFILE]) {
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ret = mbedtls_x509_crl_parse_file(&connssl->crl,
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data->set.str[STRING_SSL_CRLFILE]);
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if(ret) {
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#ifdef MBEDTLS_ERROR_C
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mbedtls_strerror(ret, errorbuf, sizeof(errorbuf));
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#endif /* MBEDTLS_ERROR_C */
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failf(data, "Error reading CRL file %s - mbedTLS: (-0x%04X) %s",
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data->set.str[STRING_SSL_CRLFILE], -ret, errorbuf);
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return CURLE_SSL_CRL_BADFILE;
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}
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}
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infof(data, "mbedTLS: Connecting to %s:%d\n",
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conn->host.name, conn->remote_port);
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mbedtls_ssl_config_init(&connssl->config);
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mbedtls_ssl_init(&connssl->ssl);
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if(mbedtls_ssl_setup(&connssl->ssl, &connssl->config)) {
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failf(data, "mbedTLS: ssl_init failed");
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return CURLE_SSL_CONNECT_ERROR;
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}
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ret = mbedtls_ssl_config_defaults(&connssl->config,
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MBEDTLS_SSL_IS_CLIENT,
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MBEDTLS_SSL_TRANSPORT_STREAM,
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MBEDTLS_SSL_PRESET_DEFAULT);
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if(ret) {
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failf(data, "mbedTLS: ssl_config failed");
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return CURLE_SSL_CONNECT_ERROR;
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}
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2015-10-21 03:30:31 -04:00
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/* new profile with RSA min key len = 1024 ... */
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mbedtls_ssl_conf_cert_profile( &connssl->config,
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&mbedtls_x509_crt_profile_fr);
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2015-10-19 08:25:34 -04:00
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switch(data->set.ssl.version) {
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case CURL_SSLVERSION_SSLv3:
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mbedtls_ssl_conf_min_version(&connssl->config, MBEDTLS_SSL_MAJOR_VERSION_3,
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MBEDTLS_SSL_MINOR_VERSION_0);
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infof(data, "mbedTLS: Forced min. SSL Version to be SSLv3\n");
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break;
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case CURL_SSLVERSION_TLSv1_0:
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mbedtls_ssl_conf_min_version(&connssl->config, MBEDTLS_SSL_MAJOR_VERSION_3,
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MBEDTLS_SSL_MINOR_VERSION_1);
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infof(data, "mbedTLS: Forced min. SSL Version to be TLS 1.0\n");
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break;
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case CURL_SSLVERSION_TLSv1_1:
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mbedtls_ssl_conf_min_version(&connssl->config, MBEDTLS_SSL_MAJOR_VERSION_3,
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MBEDTLS_SSL_MINOR_VERSION_2);
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infof(data, "mbedTLS: Forced min. SSL Version to be TLS 1.1\n");
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break;
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case CURL_SSLVERSION_TLSv1_2:
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mbedtls_ssl_conf_min_version(&connssl->config, MBEDTLS_SSL_MAJOR_VERSION_3,
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MBEDTLS_SSL_MINOR_VERSION_3);
|
|
|
|
infof(data, "mbedTLS: Forced min. SSL Version to be TLS 1.2\n");
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
mbedtls_ssl_conf_authmode(&connssl->config, MBEDTLS_SSL_VERIFY_OPTIONAL);
|
|
|
|
|
|
|
|
mbedtls_ssl_conf_rng(&connssl->config, mbedtls_ctr_drbg_random,
|
|
|
|
&connssl->ctr_drbg);
|
|
|
|
mbedtls_ssl_set_bio(&connssl->ssl, &conn->sock[sockindex],
|
|
|
|
mbedtls_net_send,
|
|
|
|
mbedtls_net_recv,
|
|
|
|
NULL /* rev_timeout() */);
|
|
|
|
|
|
|
|
mbedtls_ssl_conf_ciphersuites(&connssl->config,
|
|
|
|
mbedtls_ssl_list_ciphersuites());
|
|
|
|
if(!Curl_ssl_getsessionid(conn, &old_session, &old_session_size)) {
|
|
|
|
memcpy(&connssl->ssn, old_session, old_session_size);
|
|
|
|
infof(data, "mbedTLS re-using session\n");
|
|
|
|
}
|
|
|
|
|
|
|
|
mbedtls_ssl_set_session(&connssl->ssl,
|
|
|
|
&connssl->ssn);
|
|
|
|
|
|
|
|
mbedtls_ssl_conf_ca_chain(&connssl->config,
|
|
|
|
&connssl->cacert,
|
|
|
|
&connssl->crl);
|
|
|
|
|
|
|
|
if(data->set.str[STRING_KEY]) {
|
|
|
|
mbedtls_ssl_conf_own_cert(&connssl->config,
|
|
|
|
&connssl->clicert, &connssl->pk);
|
|
|
|
}
|
|
|
|
if(!Curl_inet_pton(AF_INET, conn->host.name, &addr) &&
|
|
|
|
#ifdef ENABLE_IPV6
|
|
|
|
!Curl_inet_pton(AF_INET6, conn->host.name, &addr) &&
|
|
|
|
#endif
|
|
|
|
sni && mbedtls_ssl_set_hostname(&connssl->ssl, conn->host.name)) {
|
|
|
|
infof(data, "WARNING: failed to configure "
|
|
|
|
"server name indication (SNI) TLS extension\n");
|
|
|
|
}
|
|
|
|
|
|
|
|
#ifdef HAS_ALPN
|
2015-12-13 03:23:36 -05:00
|
|
|
if(data->set.httpversion >= CURL_HTTP_VERSION_2) {
|
2015-10-19 08:25:34 -04:00
|
|
|
if(data->set.ssl_enable_alpn) {
|
|
|
|
static const char* protocols[] = {
|
|
|
|
NGHTTP2_PROTO_VERSION_ID, ALPN_HTTP_1_1, NULL
|
|
|
|
};
|
|
|
|
mbedtls_ssl_conf_alpn_protocols(&connssl->config, protocols);
|
|
|
|
infof(data, "ALPN, offering %s, %s\n", protocols[0],
|
|
|
|
protocols[1]);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#ifdef MBEDTLS_DEBUG
|
|
|
|
mbedtls_ssl_conf_dbg(&connssl->ssl, mbedtls_debug, data);
|
|
|
|
#endif
|
|
|
|
|
|
|
|
connssl->connecting_state = ssl_connect_2;
|
|
|
|
|
|
|
|
return CURLE_OK;
|
|
|
|
}
|
|
|
|
|
|
|
|
static CURLcode
|
|
|
|
mbedtls_connect_step2(struct connectdata *conn,
|
|
|
|
int sockindex)
|
|
|
|
{
|
|
|
|
int ret;
|
|
|
|
struct SessionHandle *data = conn->data;
|
|
|
|
struct ssl_connect_data* connssl = &conn->ssl[sockindex];
|
|
|
|
char buffer[1024];
|
|
|
|
|
|
|
|
#ifdef HAS_ALPN
|
|
|
|
const char* next_protocol;
|
|
|
|
#endif
|
|
|
|
|
|
|
|
char errorbuf[128];
|
|
|
|
errorbuf[0] = 0;
|
|
|
|
|
|
|
|
conn->recv[sockindex] = mbedtls_recv;
|
|
|
|
conn->send[sockindex] = mbedtls_send;
|
|
|
|
|
2015-10-29 17:59:27 -04:00
|
|
|
ret = mbedtls_ssl_handshake(&connssl->ssl);
|
|
|
|
|
|
|
|
if(ret == MBEDTLS_ERR_SSL_WANT_READ) {
|
|
|
|
connssl->connecting_state = ssl_connect_2_reading;
|
|
|
|
return CURLE_OK;
|
|
|
|
}
|
|
|
|
else if(ret == MBEDTLS_ERR_SSL_WANT_WRITE) {
|
|
|
|
connssl->connecting_state = ssl_connect_2_writing;
|
|
|
|
return CURLE_OK;
|
|
|
|
}
|
|
|
|
else if(ret) {
|
2015-10-19 08:25:34 -04:00
|
|
|
#ifdef MBEDTLS_ERROR_C
|
2015-10-29 17:59:27 -04:00
|
|
|
mbedtls_strerror(ret, errorbuf, sizeof(errorbuf));
|
2015-10-19 08:25:34 -04:00
|
|
|
#endif /* MBEDTLS_ERROR_C */
|
2015-10-29 17:59:27 -04:00
|
|
|
failf(data, "ssl_handshake returned - mbedTLS: (-0x%04X) %s",
|
|
|
|
-ret, errorbuf);
|
|
|
|
return CURLE_SSL_CONNECT_ERROR;
|
2015-10-19 08:25:34 -04:00
|
|
|
}
|
|
|
|
|
|
|
|
infof(data, "mbedTLS: Handshake complete, cipher is %s\n",
|
|
|
|
mbedtls_ssl_get_ciphersuite(&conn->ssl[sockindex].ssl)
|
|
|
|
);
|
|
|
|
|
|
|
|
ret = mbedtls_ssl_get_verify_result(&conn->ssl[sockindex].ssl);
|
|
|
|
|
|
|
|
if(ret && data->set.ssl.verifypeer) {
|
|
|
|
if(ret & MBEDTLS_X509_BADCERT_EXPIRED)
|
|
|
|
failf(data, "Cert verify failed: BADCERT_EXPIRED");
|
|
|
|
|
|
|
|
if(ret & MBEDTLS_X509_BADCERT_REVOKED) {
|
|
|
|
failf(data, "Cert verify failed: BADCERT_REVOKED");
|
|
|
|
return CURLE_SSL_CACERT;
|
|
|
|
}
|
|
|
|
|
|
|
|
if(ret & MBEDTLS_X509_BADCERT_CN_MISMATCH)
|
|
|
|
failf(data, "Cert verify failed: BADCERT_CN_MISMATCH");
|
|
|
|
|
|
|
|
if(ret & MBEDTLS_X509_BADCERT_NOT_TRUSTED)
|
|
|
|
failf(data, "Cert verify failed: BADCERT_NOT_TRUSTED");
|
|
|
|
|
|
|
|
return CURLE_PEER_FAILED_VERIFICATION;
|
|
|
|
}
|
|
|
|
|
|
|
|
if(mbedtls_ssl_get_peer_cert(&(connssl->ssl))) {
|
|
|
|
/* If the session was resumed, there will be no peer certs */
|
|
|
|
memset(buffer, 0, sizeof(buffer));
|
|
|
|
|
|
|
|
if(mbedtls_x509_crt_info(buffer, sizeof(buffer), (char *)"* ",
|
|
|
|
mbedtls_ssl_get_peer_cert(&(connssl->ssl))) != -1)
|
|
|
|
infof(data, "Dumping cert info:\n%s\n", buffer);
|
|
|
|
}
|
|
|
|
|
|
|
|
#ifdef HAS_ALPN
|
|
|
|
if(data->set.ssl_enable_alpn) {
|
|
|
|
next_protocol = mbedtls_ssl_get_alpn_protocol(&connssl->ssl);
|
|
|
|
|
|
|
|
if(next_protocol != NULL) {
|
|
|
|
infof(data, "ALPN, server accepted to use %s\n", next_protocol);
|
|
|
|
|
|
|
|
if(strncmp(next_protocol, NGHTTP2_PROTO_VERSION_ID,
|
|
|
|
NGHTTP2_PROTO_VERSION_ID_LEN)) {
|
2015-12-13 03:23:36 -05:00
|
|
|
conn->negnpn = CURL_HTTP_VERSION_2;
|
2015-10-19 08:25:34 -04:00
|
|
|
}
|
|
|
|
else if(strncmp(next_protocol, ALPN_HTTP_1_1, ALPN_HTTP_1_1_LENGTH)) {
|
|
|
|
conn->negnpn = CURL_HTTP_VERSION_1_1;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
infof(data, "ALPN, server did not agree to a protocol\n");
|
|
|
|
}
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
|
|
connssl->connecting_state = ssl_connect_3;
|
|
|
|
infof(data, "SSL connected\n");
|
|
|
|
|
|
|
|
return CURLE_OK;
|
|
|
|
}
|
|
|
|
|
|
|
|
static CURLcode
|
|
|
|
mbedtls_connect_step3(struct connectdata *conn,
|
|
|
|
int sockindex)
|
|
|
|
{
|
|
|
|
CURLcode retcode = CURLE_OK;
|
|
|
|
struct ssl_connect_data *connssl = &conn->ssl[sockindex];
|
|
|
|
struct SessionHandle *data = conn->data;
|
|
|
|
void *old_ssl_sessionid = NULL;
|
|
|
|
mbedtls_ssl_session *our_ssl_sessionid = &conn->ssl[sockindex].ssn;
|
|
|
|
int incache;
|
|
|
|
|
|
|
|
DEBUGASSERT(ssl_connect_3 == connssl->connecting_state);
|
|
|
|
|
|
|
|
/* Save the current session data for possible re-use */
|
|
|
|
incache = !(Curl_ssl_getsessionid(conn, &old_ssl_sessionid, NULL));
|
|
|
|
if(incache) {
|
|
|
|
if(old_ssl_sessionid != our_ssl_sessionid) {
|
|
|
|
infof(data, "old SSL session ID is stale, removing\n");
|
|
|
|
Curl_ssl_delsessionid(conn, old_ssl_sessionid);
|
|
|
|
incache = FALSE;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
if(!incache) {
|
|
|
|
void *new_session = malloc(sizeof(mbedtls_ssl_session));
|
|
|
|
|
|
|
|
if(new_session) {
|
|
|
|
memcpy(new_session, our_ssl_sessionid,
|
|
|
|
sizeof(mbedtls_ssl_session));
|
|
|
|
|
|
|
|
retcode = Curl_ssl_addsessionid(conn, new_session,
|
|
|
|
sizeof(mbedtls_ssl_session));
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
retcode = CURLE_OUT_OF_MEMORY;
|
|
|
|
}
|
|
|
|
|
|
|
|
if(retcode) {
|
|
|
|
failf(data, "failed to store ssl session");
|
|
|
|
return retcode;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
connssl->connecting_state = ssl_connect_done;
|
|
|
|
|
|
|
|
return CURLE_OK;
|
|
|
|
}
|
|
|
|
|
|
|
|
static ssize_t mbedtls_send(struct connectdata *conn,
|
|
|
|
int sockindex,
|
|
|
|
const void *mem,
|
|
|
|
size_t len,
|
|
|
|
CURLcode *curlcode)
|
|
|
|
{
|
|
|
|
int ret = -1;
|
|
|
|
|
|
|
|
ret = mbedtls_ssl_write(&conn->ssl[sockindex].ssl,
|
|
|
|
(unsigned char *)mem, len);
|
|
|
|
|
|
|
|
if(ret < 0) {
|
|
|
|
*curlcode = (ret == MBEDTLS_ERR_SSL_WANT_WRITE) ?
|
|
|
|
CURLE_AGAIN : CURLE_SEND_ERROR;
|
|
|
|
ret = -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
void Curl_mbedtls_close_all(struct SessionHandle *data)
|
|
|
|
{
|
|
|
|
(void)data;
|
|
|
|
}
|
|
|
|
|
|
|
|
void Curl_mbedtls_close(struct connectdata *conn, int sockindex)
|
|
|
|
{
|
|
|
|
/* mbedtls_rsa_free(&conn->ssl[sockindex].rsa); */
|
|
|
|
mbedtls_x509_crt_free(&conn->ssl[sockindex].clicert);
|
|
|
|
mbedtls_x509_crt_free(&conn->ssl[sockindex].cacert);
|
|
|
|
mbedtls_x509_crl_free(&conn->ssl[sockindex].crl);
|
|
|
|
mbedtls_ssl_free(&conn->ssl[sockindex].ssl);
|
|
|
|
}
|
|
|
|
|
|
|
|
static ssize_t mbedtls_recv(struct connectdata *conn,
|
|
|
|
int num,
|
|
|
|
char *buf,
|
|
|
|
size_t buffersize,
|
|
|
|
CURLcode *curlcode)
|
|
|
|
{
|
|
|
|
int ret = -1;
|
|
|
|
ssize_t len = -1;
|
|
|
|
|
|
|
|
memset(buf, 0, buffersize);
|
|
|
|
ret = mbedtls_ssl_read(&conn->ssl[num].ssl, (unsigned char *)buf,
|
|
|
|
buffersize);
|
|
|
|
|
|
|
|
if(ret <= 0) {
|
|
|
|
if(ret == MBEDTLS_ERR_SSL_PEER_CLOSE_NOTIFY)
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
*curlcode = (ret == MBEDTLS_ERR_SSL_WANT_READ) ?
|
|
|
|
CURLE_AGAIN : CURLE_RECV_ERROR;
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
len = ret;
|
|
|
|
|
|
|
|
return len;
|
|
|
|
}
|
|
|
|
|
|
|
|
void Curl_mbedtls_session_free(void *ptr)
|
|
|
|
{
|
|
|
|
free(ptr);
|
|
|
|
}
|
|
|
|
|
|
|
|
size_t Curl_mbedtls_version(char *buffer, size_t size)
|
|
|
|
{
|
|
|
|
unsigned int version = mbedtls_version_get_number();
|
|
|
|
return snprintf(buffer, size, "mbedTLS/%d.%d.%d", version>>24,
|
|
|
|
(version>>16)&0xff, (version>>8)&0xff);
|
|
|
|
}
|
|
|
|
|
|
|
|
static CURLcode
|
|
|
|
mbedtls_connect_common(struct connectdata *conn,
|
|
|
|
int sockindex,
|
|
|
|
bool nonblocking,
|
|
|
|
bool *done)
|
|
|
|
{
|
|
|
|
CURLcode retcode;
|
|
|
|
struct SessionHandle *data = conn->data;
|
|
|
|
struct ssl_connect_data *connssl = &conn->ssl[sockindex];
|
|
|
|
curl_socket_t sockfd = conn->sock[sockindex];
|
|
|
|
long timeout_ms;
|
|
|
|
int what;
|
|
|
|
|
|
|
|
/* check if the connection has already been established */
|
|
|
|
if(ssl_connection_complete == connssl->state) {
|
|
|
|
*done = TRUE;
|
|
|
|
return CURLE_OK;
|
|
|
|
}
|
|
|
|
|
|
|
|
if(ssl_connect_1==connssl->connecting_state) {
|
|
|
|
/* Find out how much more time we're allowed */
|
|
|
|
timeout_ms = Curl_timeleft(data, NULL, TRUE);
|
|
|
|
|
|
|
|
if(timeout_ms < 0) {
|
|
|
|
/* no need to continue if time already is up */
|
|
|
|
failf(data, "SSL connection timeout");
|
|
|
|
return CURLE_OPERATION_TIMEDOUT;
|
|
|
|
}
|
|
|
|
retcode = mbedtls_connect_step1(conn, sockindex);
|
|
|
|
if(retcode)
|
|
|
|
return retcode;
|
|
|
|
}
|
|
|
|
|
|
|
|
while(ssl_connect_2 == connssl->connecting_state ||
|
|
|
|
ssl_connect_2_reading == connssl->connecting_state ||
|
|
|
|
ssl_connect_2_writing == connssl->connecting_state) {
|
|
|
|
|
|
|
|
/* check allowed time left */
|
|
|
|
timeout_ms = Curl_timeleft(data, NULL, TRUE);
|
|
|
|
|
|
|
|
if(timeout_ms < 0) {
|
|
|
|
/* no need to continue if time already is up */
|
|
|
|
failf(data, "SSL connection timeout");
|
|
|
|
return CURLE_OPERATION_TIMEDOUT;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* if ssl is expecting something, check if it's available. */
|
|
|
|
if(connssl->connecting_state == ssl_connect_2_reading
|
|
|
|
|| connssl->connecting_state == ssl_connect_2_writing) {
|
|
|
|
|
|
|
|
curl_socket_t writefd = ssl_connect_2_writing==
|
|
|
|
connssl->connecting_state?sockfd:CURL_SOCKET_BAD;
|
|
|
|
curl_socket_t readfd = ssl_connect_2_reading==
|
|
|
|
connssl->connecting_state?sockfd:CURL_SOCKET_BAD;
|
|
|
|
|
|
|
|
what = Curl_socket_ready(readfd, writefd, nonblocking ? 0 : timeout_ms);
|
|
|
|
if(what < 0) {
|
|
|
|
/* fatal error */
|
|
|
|
failf(data, "select/poll on SSL socket, errno: %d", SOCKERRNO);
|
|
|
|
return CURLE_SSL_CONNECT_ERROR;
|
|
|
|
}
|
|
|
|
else if(0 == what) {
|
|
|
|
if(nonblocking) {
|
|
|
|
*done = FALSE;
|
|
|
|
return CURLE_OK;
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
/* timeout */
|
|
|
|
failf(data, "SSL connection timeout");
|
|
|
|
return CURLE_OPERATION_TIMEDOUT;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
/* socket is readable or writable */
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Run transaction, and return to the caller if it failed or if
|
|
|
|
* this connection is part of a multi handle and this loop would
|
|
|
|
* execute again. This permits the owner of a multi handle to
|
|
|
|
* abort a connection attempt before step2 has completed while
|
|
|
|
* ensuring that a client using select() or epoll() will always
|
|
|
|
* have a valid fdset to wait on.
|
|
|
|
*/
|
|
|
|
retcode = mbedtls_connect_step2(conn, sockindex);
|
|
|
|
if(retcode || (nonblocking &&
|
|
|
|
(ssl_connect_2 == connssl->connecting_state ||
|
|
|
|
ssl_connect_2_reading == connssl->connecting_state ||
|
|
|
|
ssl_connect_2_writing == connssl->connecting_state)))
|
|
|
|
return retcode;
|
|
|
|
|
|
|
|
} /* repeat step2 until all transactions are done. */
|
|
|
|
|
|
|
|
if(ssl_connect_3==connssl->connecting_state) {
|
|
|
|
retcode = mbedtls_connect_step3(conn, sockindex);
|
|
|
|
if(retcode)
|
|
|
|
return retcode;
|
|
|
|
}
|
|
|
|
|
|
|
|
if(ssl_connect_done==connssl->connecting_state) {
|
|
|
|
connssl->state = ssl_connection_complete;
|
|
|
|
conn->recv[sockindex] = mbedtls_recv;
|
|
|
|
conn->send[sockindex] = mbedtls_send;
|
|
|
|
*done = TRUE;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
*done = FALSE;
|
|
|
|
|
|
|
|
/* Reset our connect state machine */
|
|
|
|
connssl->connecting_state = ssl_connect_1;
|
|
|
|
|
|
|
|
return CURLE_OK;
|
|
|
|
}
|
|
|
|
|
|
|
|
CURLcode
|
|
|
|
Curl_mbedtls_connect_nonblocking(struct connectdata *conn,
|
|
|
|
int sockindex,
|
|
|
|
bool *done)
|
|
|
|
{
|
|
|
|
return mbedtls_connect_common(conn, sockindex, TRUE, done);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
CURLcode
|
|
|
|
Curl_mbedtls_connect(struct connectdata *conn,
|
|
|
|
int sockindex)
|
|
|
|
{
|
|
|
|
CURLcode retcode;
|
|
|
|
bool done = FALSE;
|
|
|
|
|
|
|
|
retcode = mbedtls_connect_common(conn, sockindex, FALSE, &done);
|
|
|
|
if(retcode)
|
|
|
|
return retcode;
|
|
|
|
|
|
|
|
DEBUGASSERT(done);
|
|
|
|
|
|
|
|
return CURLE_OK;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* return 0 error initializing SSL
|
|
|
|
* return 1 SSL initialized successfully
|
|
|
|
*/
|
|
|
|
int mbedtls_init(void)
|
|
|
|
{
|
2015-10-23 10:14:29 -04:00
|
|
|
return Curl_polarsslthreadlock_thread_setup();
|
2015-10-19 08:25:34 -04:00
|
|
|
}
|
|
|
|
|
|
|
|
void mbedtls_cleanup(void)
|
|
|
|
{
|
2015-10-23 10:14:29 -04:00
|
|
|
(void)Curl_polarsslthreadlock_thread_cleanup();
|
2015-10-19 08:25:34 -04:00
|
|
|
}
|
|
|
|
|
|
|
|
#endif /* USE_MBEDTLS */
|