[164] | 1 | /***************************************************************************
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| 2 | * _ _ ____ _
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| 3 | * Project ___| | | | _ \| |
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| 4 | * / __| | | | |_) | |
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| 5 | * | (__| |_| | _ <| |___
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| 6 | * \___|\___/|_| \_\_____|
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| 7 | *
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| 8 | * Copyright (C) 2012 - 2015, Daniel Stenberg, <daniel@haxx.se>, et al.
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| 9 | * Copyright (C) 2010 - 2011, Hoi-Ho Chan, <hoiho.chan@gmail.com>
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| 10 | *
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| 11 | * This software is licensed as described in the file COPYING, which
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| 12 | * you should have received as part of this distribution. The terms
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| 13 | * are also available at https://curl.haxx.se/docs/copyright.html.
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| 14 | *
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| 15 | * You may opt to use, copy, modify, merge, publish, distribute and/or sell
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| 16 | * copies of the Software, and permit persons to whom the Software is
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| 17 | * furnished to do so, under the terms of the COPYING file.
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| 18 | *
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| 19 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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| 20 | * KIND, either express or implied.
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| 21 | *
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| 22 | ***************************************************************************/
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| 23 |
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| 24 | /*
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| 25 | * Source file for all PolarSSL-specific code for the TLS/SSL layer. No code
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| 26 | * but vtls.c should ever call or use these functions.
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| 27 | *
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| 28 | */
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| 29 |
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| 30 | #include "curl_setup.h"
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| 31 |
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| 32 | #ifdef USE_POLARSSL
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| 33 |
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| 34 | #include <polarssl/net.h>
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| 35 | #include <polarssl/ssl.h>
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| 36 | #include <polarssl/certs.h>
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| 37 | #include <polarssl/x509.h>
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| 38 | #include <polarssl/version.h>
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| 39 |
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| 40 | #if POLARSSL_VERSION_NUMBER < 0x01030000
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| 41 | #error too old PolarSSL
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| 42 | #endif
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| 43 |
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| 44 | #include <polarssl/error.h>
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| 45 | #include <polarssl/entropy.h>
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| 46 | #include <polarssl/ctr_drbg.h>
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| 47 |
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| 48 | #include "urldata.h"
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| 49 | #include "sendf.h"
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| 50 | #include "inet_pton.h"
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| 51 | #include "polarssl.h"
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| 52 | #include "vtls.h"
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| 53 | #include "parsedate.h"
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| 54 | #include "connect.h" /* for the connect timeout */
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| 55 | #include "select.h"
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| 56 | #include "rawstr.h"
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| 57 | #include "polarssl_threadlock.h"
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| 58 | #include "curl_printf.h"
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| 59 | #include "curl_memory.h"
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| 60 | /* The last #include file should be: */
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| 61 | #include "memdebug.h"
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| 62 |
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| 63 | /* apply threading? */
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| 64 | #if defined(USE_THREADS_POSIX) || defined(USE_THREADS_WIN32)
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| 65 | #define THREADING_SUPPORT
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| 66 | #endif
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| 67 |
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| 68 | #if defined(THREADING_SUPPORT)
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| 69 | static entropy_context entropy;
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| 70 |
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| 71 | static int entropy_init_initialized = 0;
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| 72 |
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| 73 | /* start of entropy_init_mutex() */
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| 74 | static void entropy_init_mutex(entropy_context *ctx)
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| 75 | {
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| 76 | /* lock 0 = entropy_init_mutex() */
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| 77 | Curl_polarsslthreadlock_lock_function(0);
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| 78 | if(entropy_init_initialized == 0) {
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| 79 | entropy_init(ctx);
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| 80 | entropy_init_initialized = 1;
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| 81 | }
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| 82 | Curl_polarsslthreadlock_unlock_function(0);
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| 83 | }
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| 84 | /* end of entropy_init_mutex() */
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| 85 |
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| 86 | /* start of entropy_func_mutex() */
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| 87 | static int entropy_func_mutex(void *data, unsigned char *output, size_t len)
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| 88 | {
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| 89 | int ret;
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| 90 | /* lock 1 = entropy_func_mutex() */
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| 91 | Curl_polarsslthreadlock_lock_function(1);
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| 92 | ret = entropy_func(data, output, len);
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| 93 | Curl_polarsslthreadlock_unlock_function(1);
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| 94 |
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| 95 | return ret;
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| 96 | }
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| 97 | /* end of entropy_func_mutex() */
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| 98 |
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| 99 | #endif /* THREADING_SUPPORT */
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| 100 |
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| 101 | /* Define this to enable lots of debugging for PolarSSL */
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| 102 | #undef POLARSSL_DEBUG
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| 103 |
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| 104 | #ifdef POLARSSL_DEBUG
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| 105 | static void polarssl_debug(void *context, int level, const char *line)
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| 106 | {
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| 107 | struct SessionHandle *data = NULL;
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| 108 |
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| 109 | if(!context)
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| 110 | return;
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| 111 |
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| 112 | data = (struct SessionHandle *)context;
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| 113 |
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| 114 | infof(data, "%s", line);
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| 115 | (void) level;
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| 116 | }
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| 117 | #else
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| 118 | #endif
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| 119 |
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| 120 | /* ALPN for http2? */
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| 121 | #ifdef POLARSSL_SSL_ALPN
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| 122 | # define HAS_ALPN
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| 123 | #endif
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| 124 |
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| 125 | static Curl_recv polarssl_recv;
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| 126 | static Curl_send polarssl_send;
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| 127 |
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| 128 |
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| 129 | static CURLcode
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| 130 | polarssl_connect_step1(struct connectdata *conn,
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| 131 | int sockindex)
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| 132 | {
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| 133 | struct SessionHandle *data = conn->data;
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| 134 | struct ssl_connect_data* connssl = &conn->ssl[sockindex];
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| 135 |
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| 136 | bool sni = TRUE; /* default is SNI enabled */
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| 137 | int ret = -1;
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| 138 | #ifdef ENABLE_IPV6
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| 139 | struct in6_addr addr;
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| 140 | #else
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| 141 | struct in_addr addr;
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| 142 | #endif
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| 143 | void *old_session = NULL;
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| 144 | size_t old_session_size = 0;
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| 145 | char errorbuf[128];
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| 146 | errorbuf[0]=0;
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| 147 |
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| 148 | /* PolarSSL only supports SSLv3 and TLSv1 */
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| 149 | if(data->set.ssl.version == CURL_SSLVERSION_SSLv2) {
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| 150 | failf(data, "PolarSSL does not support SSLv2");
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| 151 | return CURLE_SSL_CONNECT_ERROR;
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| 152 | }
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| 153 | else if(data->set.ssl.version == CURL_SSLVERSION_SSLv3)
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| 154 | sni = FALSE; /* SSLv3 has no SNI */
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| 155 |
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| 156 | #ifdef THREADING_SUPPORT
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| 157 | entropy_init_mutex(&entropy);
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| 158 |
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| 159 | if((ret = ctr_drbg_init(&connssl->ctr_drbg, entropy_func_mutex, &entropy,
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| 160 | connssl->ssn.id, connssl->ssn.length)) != 0) {
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| 161 | #ifdef POLARSSL_ERROR_C
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| 162 | error_strerror(ret, errorbuf, sizeof(errorbuf));
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| 163 | #endif /* POLARSSL_ERROR_C */
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| 164 | failf(data, "Failed - PolarSSL: ctr_drbg_init returned (-0x%04X) %s\n",
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| 165 | -ret, errorbuf);
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| 166 | }
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| 167 | #else
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| 168 | entropy_init(&connssl->entropy);
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| 169 |
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| 170 | if((ret = ctr_drbg_init(&connssl->ctr_drbg, entropy_func, &connssl->entropy,
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| 171 | connssl->ssn.id, connssl->ssn.length)) != 0) {
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| 172 | #ifdef POLARSSL_ERROR_C
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| 173 | error_strerror(ret, errorbuf, sizeof(errorbuf));
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| 174 | #endif /* POLARSSL_ERROR_C */
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| 175 | failf(data, "Failed - PolarSSL: ctr_drbg_init returned (-0x%04X) %s\n",
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| 176 | -ret, errorbuf);
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| 177 | }
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| 178 | #endif /* THREADING_SUPPORT */
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| 179 |
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| 180 | /* Load the trusted CA */
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| 181 | memset(&connssl->cacert, 0, sizeof(x509_crt));
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| 182 |
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| 183 | if(data->set.str[STRING_SSL_CAFILE]) {
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| 184 | ret = x509_crt_parse_file(&connssl->cacert,
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| 185 | data->set.str[STRING_SSL_CAFILE]);
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| 186 |
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| 187 | if(ret<0) {
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| 188 | #ifdef POLARSSL_ERROR_C
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| 189 | error_strerror(ret, errorbuf, sizeof(errorbuf));
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| 190 | #endif /* POLARSSL_ERROR_C */
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| 191 | failf(data, "Error reading ca cert file %s - PolarSSL: (-0x%04X) %s",
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| 192 | data->set.str[STRING_SSL_CAFILE], -ret, errorbuf);
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| 193 |
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| 194 | if(data->set.ssl.verifypeer)
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| 195 | return CURLE_SSL_CACERT_BADFILE;
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| 196 | }
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| 197 | }
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| 198 |
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| 199 | if(data->set.str[STRING_SSL_CAPATH]) {
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| 200 | ret = x509_crt_parse_path(&connssl->cacert,
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| 201 | data->set.str[STRING_SSL_CAPATH]);
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| 202 |
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| 203 | if(ret<0) {
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| 204 | #ifdef POLARSSL_ERROR_C
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| 205 | error_strerror(ret, errorbuf, sizeof(errorbuf));
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| 206 | #endif /* POLARSSL_ERROR_C */
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| 207 | failf(data, "Error reading ca cert path %s - PolarSSL: (-0x%04X) %s",
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| 208 | data->set.str[STRING_SSL_CAPATH], -ret, errorbuf);
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| 209 |
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| 210 | if(data->set.ssl.verifypeer)
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| 211 | return CURLE_SSL_CACERT_BADFILE;
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| 212 | }
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| 213 | }
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| 214 |
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| 215 | /* Load the client certificate */
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| 216 | memset(&connssl->clicert, 0, sizeof(x509_crt));
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| 217 |
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| 218 | if(data->set.str[STRING_CERT]) {
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| 219 | ret = x509_crt_parse_file(&connssl->clicert,
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| 220 | data->set.str[STRING_CERT]);
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| 221 |
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| 222 | if(ret) {
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| 223 | #ifdef POLARSSL_ERROR_C
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| 224 | error_strerror(ret, errorbuf, sizeof(errorbuf));
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| 225 | #endif /* POLARSSL_ERROR_C */
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| 226 | failf(data, "Error reading client cert file %s - PolarSSL: (-0x%04X) %s",
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| 227 | data->set.str[STRING_CERT], -ret, errorbuf);
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| 228 |
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| 229 | return CURLE_SSL_CERTPROBLEM;
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| 230 | }
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| 231 | }
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| 232 |
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| 233 | /* Load the client private key */
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| 234 | if(data->set.str[STRING_KEY]) {
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| 235 | pk_context pk;
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| 236 | pk_init(&pk);
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| 237 | ret = pk_parse_keyfile(&pk, data->set.str[STRING_KEY],
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| 238 | data->set.str[STRING_KEY_PASSWD]);
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| 239 | if(ret == 0 && !pk_can_do(&pk, POLARSSL_PK_RSA))
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| 240 | ret = POLARSSL_ERR_PK_TYPE_MISMATCH;
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| 241 | if(ret == 0)
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| 242 | rsa_copy(&connssl->rsa, pk_rsa(pk));
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| 243 | else
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| 244 | rsa_free(&connssl->rsa);
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| 245 | pk_free(&pk);
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| 246 |
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| 247 | if(ret) {
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| 248 | #ifdef POLARSSL_ERROR_C
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| 249 | error_strerror(ret, errorbuf, sizeof(errorbuf));
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| 250 | #endif /* POLARSSL_ERROR_C */
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| 251 | failf(data, "Error reading private key %s - PolarSSL: (-0x%04X) %s",
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| 252 | data->set.str[STRING_KEY], -ret, errorbuf);
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| 253 |
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| 254 | return CURLE_SSL_CERTPROBLEM;
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| 255 | }
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| 256 | }
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| 257 |
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| 258 | /* Load the CRL */
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| 259 | memset(&connssl->crl, 0, sizeof(x509_crl));
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| 260 |
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| 261 | if(data->set.str[STRING_SSL_CRLFILE]) {
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| 262 | ret = x509_crl_parse_file(&connssl->crl,
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| 263 | data->set.str[STRING_SSL_CRLFILE]);
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| 264 |
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| 265 | if(ret) {
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| 266 | #ifdef POLARSSL_ERROR_C
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| 267 | error_strerror(ret, errorbuf, sizeof(errorbuf));
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| 268 | #endif /* POLARSSL_ERROR_C */
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| 269 | failf(data, "Error reading CRL file %s - PolarSSL: (-0x%04X) %s",
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| 270 | data->set.str[STRING_SSL_CRLFILE], -ret, errorbuf);
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| 271 |
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| 272 | return CURLE_SSL_CRL_BADFILE;
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| 273 | }
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| 274 | }
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| 275 |
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| 276 | infof(data, "PolarSSL: Connecting to %s:%d\n",
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| 277 | conn->host.name, conn->remote_port);
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| 278 |
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| 279 | if(ssl_init(&connssl->ssl)) {
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| 280 | failf(data, "PolarSSL: ssl_init failed");
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| 281 | return CURLE_SSL_CONNECT_ERROR;
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| 282 | }
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| 283 |
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| 284 | switch(data->set.ssl.version) {
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| 285 | default:
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| 286 | case CURL_SSLVERSION_DEFAULT:
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| 287 | case CURL_SSLVERSION_TLSv1:
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| 288 | ssl_set_min_version(&connssl->ssl, SSL_MAJOR_VERSION_3,
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| 289 | SSL_MINOR_VERSION_1);
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| 290 | break;
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| 291 | case CURL_SSLVERSION_SSLv3:
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| 292 | ssl_set_min_version(&connssl->ssl, SSL_MAJOR_VERSION_3,
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| 293 | SSL_MINOR_VERSION_0);
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| 294 | ssl_set_max_version(&connssl->ssl, SSL_MAJOR_VERSION_3,
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| 295 | SSL_MINOR_VERSION_0);
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| 296 | infof(data, "PolarSSL: Forced min. SSL Version to be SSLv3\n");
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| 297 | break;
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| 298 | case CURL_SSLVERSION_TLSv1_0:
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| 299 | ssl_set_min_version(&connssl->ssl, SSL_MAJOR_VERSION_3,
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| 300 | SSL_MINOR_VERSION_1);
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| 301 | ssl_set_max_version(&connssl->ssl, SSL_MAJOR_VERSION_3,
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| 302 | SSL_MINOR_VERSION_1);
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| 303 | infof(data, "PolarSSL: Forced min. SSL Version to be TLS 1.0\n");
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| 304 | break;
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| 305 | case CURL_SSLVERSION_TLSv1_1:
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| 306 | ssl_set_min_version(&connssl->ssl, SSL_MAJOR_VERSION_3,
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| 307 | SSL_MINOR_VERSION_2);
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| 308 | ssl_set_max_version(&connssl->ssl, SSL_MAJOR_VERSION_3,
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| 309 | SSL_MINOR_VERSION_2);
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| 310 | infof(data, "PolarSSL: Forced min. SSL Version to be TLS 1.1\n");
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| 311 | break;
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| 312 | case CURL_SSLVERSION_TLSv1_2:
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| 313 | ssl_set_min_version(&connssl->ssl, SSL_MAJOR_VERSION_3,
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| 314 | SSL_MINOR_VERSION_3);
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| 315 | ssl_set_max_version(&connssl->ssl, SSL_MAJOR_VERSION_3,
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| 316 | SSL_MINOR_VERSION_3);
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| 317 | infof(data, "PolarSSL: Forced min. SSL Version to be TLS 1.2\n");
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| 318 | break;
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| 319 | }
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| 320 |
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| 321 | ssl_set_endpoint(&connssl->ssl, SSL_IS_CLIENT);
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| 322 | ssl_set_authmode(&connssl->ssl, SSL_VERIFY_OPTIONAL);
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| 323 |
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| 324 | ssl_set_rng(&connssl->ssl, ctr_drbg_random,
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| 325 | &connssl->ctr_drbg);
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| 326 | ssl_set_bio(&connssl->ssl,
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| 327 | net_recv, &conn->sock[sockindex],
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| 328 | net_send, &conn->sock[sockindex]);
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| 329 |
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| 330 | ssl_set_ciphersuites(&connssl->ssl, ssl_list_ciphersuites());
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| 331 | if(!Curl_ssl_getsessionid(conn, &old_session, &old_session_size)) {
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| 332 | memcpy(&connssl->ssn, old_session, old_session_size);
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| 333 | infof(data, "PolarSSL re-using session\n");
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| 334 | }
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| 335 |
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| 336 | ssl_set_session(&connssl->ssl,
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| 337 | &connssl->ssn);
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| 338 |
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| 339 | ssl_set_ca_chain(&connssl->ssl,
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| 340 | &connssl->cacert,
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| 341 | &connssl->crl,
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| 342 | conn->host.name);
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| 343 |
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| 344 | ssl_set_own_cert_rsa(&connssl->ssl,
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| 345 | &connssl->clicert, &connssl->rsa);
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| 346 |
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| 347 | if(!Curl_inet_pton(AF_INET, conn->host.name, &addr) &&
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| 348 | #ifdef ENABLE_IPV6
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| 349 | !Curl_inet_pton(AF_INET6, conn->host.name, &addr) &&
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| 350 | #endif
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| 351 | sni && ssl_set_hostname(&connssl->ssl, conn->host.name)) {
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| 352 | infof(data, "WARNING: failed to configure "
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| 353 | "server name indication (SNI) TLS extension\n");
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| 354 | }
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| 355 |
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| 356 | #ifdef HAS_ALPN
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| 357 | if(data->set.ssl_enable_alpn) {
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| 358 | static const char* protocols[3];
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| 359 | int cur = 0;
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| 360 |
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| 361 | #ifdef USE_NGHTTP2
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| 362 | if(data->set.httpversion >= CURL_HTTP_VERSION_2) {
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| 363 | protocols[cur++] = NGHTTP2_PROTO_VERSION_ID;
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| 364 | infof(data, "ALPN, offering %s\n", NGHTTP2_PROTO_VERSION_ID);
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| 365 | }
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| 366 | #endif
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| 367 |
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| 368 | protocols[cur++] = ALPN_HTTP_1_1;
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| 369 | infof(data, "ALPN, offering %s\n", ALPN_HTTP_1_1);
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| 370 |
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| 371 | protocols[cur] = NULL;
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| 372 |
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| 373 | ssl_set_alpn_protocols(&connssl->ssl, protocols);
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| 374 | }
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| 375 | #endif
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| 376 |
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| 377 | #ifdef POLARSSL_DEBUG
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| 378 | ssl_set_dbg(&connssl->ssl, polarssl_debug, data);
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| 379 | #endif
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| 380 |
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| 381 | connssl->connecting_state = ssl_connect_2;
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| 382 |
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| 383 | return CURLE_OK;
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| 384 | }
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| 385 |
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| 386 | static CURLcode
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| 387 | polarssl_connect_step2(struct connectdata *conn,
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| 388 | int sockindex)
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| 389 | {
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| 390 | int ret;
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| 391 | struct SessionHandle *data = conn->data;
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| 392 | struct ssl_connect_data* connssl = &conn->ssl[sockindex];
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| 393 | char buffer[1024];
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| 394 |
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| 395 | char errorbuf[128];
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| 396 | errorbuf[0] = 0;
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| 397 |
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| 398 | conn->recv[sockindex] = polarssl_recv;
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| 399 | conn->send[sockindex] = polarssl_send;
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| 400 |
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| 401 | ret = ssl_handshake(&connssl->ssl);
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| 402 |
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| 403 | switch(ret) {
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| 404 | case 0:
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| 405 | break;
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| 406 |
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| 407 | case POLARSSL_ERR_NET_WANT_READ:
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| 408 | connssl->connecting_state = ssl_connect_2_reading;
|
---|
| 409 | return CURLE_OK;
|
---|
| 410 |
|
---|
| 411 | case POLARSSL_ERR_NET_WANT_WRITE:
|
---|
| 412 | connssl->connecting_state = ssl_connect_2_writing;
|
---|
| 413 | return CURLE_OK;
|
---|
| 414 |
|
---|
| 415 | default:
|
---|
| 416 | #ifdef POLARSSL_ERROR_C
|
---|
| 417 | error_strerror(ret, errorbuf, sizeof(errorbuf));
|
---|
| 418 | #endif /* POLARSSL_ERROR_C */
|
---|
| 419 | failf(data, "ssl_handshake returned - PolarSSL: (-0x%04X) %s",
|
---|
| 420 | -ret, errorbuf);
|
---|
| 421 | return CURLE_SSL_CONNECT_ERROR;
|
---|
| 422 | }
|
---|
| 423 |
|
---|
| 424 | infof(data, "PolarSSL: Handshake complete, cipher is %s\n",
|
---|
| 425 | ssl_get_ciphersuite(&conn->ssl[sockindex].ssl) );
|
---|
| 426 |
|
---|
| 427 | ret = ssl_get_verify_result(&conn->ssl[sockindex].ssl);
|
---|
| 428 |
|
---|
| 429 | if(ret && data->set.ssl.verifypeer) {
|
---|
| 430 | if(ret & BADCERT_EXPIRED)
|
---|
| 431 | failf(data, "Cert verify failed: BADCERT_EXPIRED");
|
---|
| 432 |
|
---|
| 433 | if(ret & BADCERT_REVOKED) {
|
---|
| 434 | failf(data, "Cert verify failed: BADCERT_REVOKED");
|
---|
| 435 | return CURLE_SSL_CACERT;
|
---|
| 436 | }
|
---|
| 437 |
|
---|
| 438 | if(ret & BADCERT_CN_MISMATCH)
|
---|
| 439 | failf(data, "Cert verify failed: BADCERT_CN_MISMATCH");
|
---|
| 440 |
|
---|
| 441 | if(ret & BADCERT_NOT_TRUSTED)
|
---|
| 442 | failf(data, "Cert verify failed: BADCERT_NOT_TRUSTED");
|
---|
| 443 |
|
---|
| 444 | return CURLE_PEER_FAILED_VERIFICATION;
|
---|
| 445 | }
|
---|
| 446 |
|
---|
| 447 | if(ssl_get_peer_cert(&(connssl->ssl))) {
|
---|
| 448 | /* If the session was resumed, there will be no peer certs */
|
---|
| 449 | memset(buffer, 0, sizeof(buffer));
|
---|
| 450 |
|
---|
| 451 | if(x509_crt_info(buffer, sizeof(buffer), (char *)"* ",
|
---|
| 452 | ssl_get_peer_cert(&(connssl->ssl))) != -1)
|
---|
| 453 | infof(data, "Dumping cert info:\n%s\n", buffer);
|
---|
| 454 | }
|
---|
| 455 |
|
---|
| 456 | #ifdef HAS_ALPN
|
---|
| 457 | if(data->set.ssl_enable_alpn) {
|
---|
| 458 | const char *next_protocol = ssl_get_alpn_protocol(&connssl->ssl);
|
---|
| 459 |
|
---|
| 460 | if(next_protocol != NULL) {
|
---|
| 461 | infof(data, "ALPN, server accepted to use %s\n", next_protocol);
|
---|
| 462 |
|
---|
| 463 | #ifdef USE_NGHTTP2
|
---|
| 464 | if(!strncmp(next_protocol, NGHTTP2_PROTO_VERSION_ID,
|
---|
| 465 | NGHTTP2_PROTO_VERSION_ID_LEN)) {
|
---|
| 466 | conn->negnpn = CURL_HTTP_VERSION_2;
|
---|
| 467 | }
|
---|
| 468 | else
|
---|
| 469 | #endif
|
---|
| 470 | if(!strncmp(next_protocol, ALPN_HTTP_1_1, ALPN_HTTP_1_1_LENGTH)) {
|
---|
| 471 | conn->negnpn = CURL_HTTP_VERSION_1_1;
|
---|
| 472 | }
|
---|
| 473 | }
|
---|
| 474 | else
|
---|
| 475 | infof(data, "ALPN, server did not agree to a protocol\n");
|
---|
| 476 | }
|
---|
| 477 | #endif
|
---|
| 478 |
|
---|
| 479 | connssl->connecting_state = ssl_connect_3;
|
---|
| 480 | infof(data, "SSL connected\n");
|
---|
| 481 |
|
---|
| 482 | return CURLE_OK;
|
---|
| 483 | }
|
---|
| 484 |
|
---|
| 485 | static CURLcode
|
---|
| 486 | polarssl_connect_step3(struct connectdata *conn,
|
---|
| 487 | int sockindex)
|
---|
| 488 | {
|
---|
| 489 | CURLcode result = CURLE_OK;
|
---|
| 490 | struct ssl_connect_data *connssl = &conn->ssl[sockindex];
|
---|
| 491 | struct SessionHandle *data = conn->data;
|
---|
| 492 | void *old_ssl_sessionid = NULL;
|
---|
| 493 | ssl_session *our_ssl_sessionid = &conn->ssl[sockindex].ssn;
|
---|
| 494 | bool incache;
|
---|
| 495 |
|
---|
| 496 | DEBUGASSERT(ssl_connect_3 == connssl->connecting_state);
|
---|
| 497 |
|
---|
| 498 | /* Save the current session data for possible re-use */
|
---|
| 499 | incache = !(Curl_ssl_getsessionid(conn, &old_ssl_sessionid, NULL));
|
---|
| 500 | if(incache) {
|
---|
| 501 | if(old_ssl_sessionid != our_ssl_sessionid) {
|
---|
| 502 | infof(data, "old SSL session ID is stale, removing\n");
|
---|
| 503 | Curl_ssl_delsessionid(conn, old_ssl_sessionid);
|
---|
| 504 | incache = FALSE;
|
---|
| 505 | }
|
---|
| 506 | }
|
---|
| 507 |
|
---|
| 508 | if(!incache) {
|
---|
| 509 | void *new_session = malloc(sizeof(ssl_session));
|
---|
| 510 |
|
---|
| 511 | if(new_session) {
|
---|
| 512 | memcpy(new_session, our_ssl_sessionid, sizeof(ssl_session));
|
---|
| 513 |
|
---|
| 514 | result = Curl_ssl_addsessionid(conn, new_session, sizeof(ssl_session));
|
---|
| 515 | }
|
---|
| 516 | else
|
---|
| 517 | result = CURLE_OUT_OF_MEMORY;
|
---|
| 518 |
|
---|
| 519 | if(result) {
|
---|
| 520 | failf(data, "failed to store ssl session");
|
---|
| 521 | return result;
|
---|
| 522 | }
|
---|
| 523 | }
|
---|
| 524 |
|
---|
| 525 | connssl->connecting_state = ssl_connect_done;
|
---|
| 526 |
|
---|
| 527 | return CURLE_OK;
|
---|
| 528 | }
|
---|
| 529 |
|
---|
| 530 | static ssize_t polarssl_send(struct connectdata *conn,
|
---|
| 531 | int sockindex,
|
---|
| 532 | const void *mem,
|
---|
| 533 | size_t len,
|
---|
| 534 | CURLcode *curlcode)
|
---|
| 535 | {
|
---|
| 536 | int ret = -1;
|
---|
| 537 |
|
---|
| 538 | ret = ssl_write(&conn->ssl[sockindex].ssl,
|
---|
| 539 | (unsigned char *)mem, len);
|
---|
| 540 |
|
---|
| 541 | if(ret < 0) {
|
---|
| 542 | *curlcode = (ret == POLARSSL_ERR_NET_WANT_WRITE) ?
|
---|
| 543 | CURLE_AGAIN : CURLE_SEND_ERROR;
|
---|
| 544 | ret = -1;
|
---|
| 545 | }
|
---|
| 546 |
|
---|
| 547 | return ret;
|
---|
| 548 | }
|
---|
| 549 |
|
---|
| 550 | void Curl_polarssl_close(struct connectdata *conn, int sockindex)
|
---|
| 551 | {
|
---|
| 552 | rsa_free(&conn->ssl[sockindex].rsa);
|
---|
| 553 | x509_crt_free(&conn->ssl[sockindex].clicert);
|
---|
| 554 | x509_crt_free(&conn->ssl[sockindex].cacert);
|
---|
| 555 | x509_crl_free(&conn->ssl[sockindex].crl);
|
---|
| 556 | ssl_free(&conn->ssl[sockindex].ssl);
|
---|
| 557 | }
|
---|
| 558 |
|
---|
| 559 | static ssize_t polarssl_recv(struct connectdata *conn,
|
---|
| 560 | int num,
|
---|
| 561 | char *buf,
|
---|
| 562 | size_t buffersize,
|
---|
| 563 | CURLcode *curlcode)
|
---|
| 564 | {
|
---|
| 565 | int ret = -1;
|
---|
| 566 | ssize_t len = -1;
|
---|
| 567 |
|
---|
| 568 | memset(buf, 0, buffersize);
|
---|
| 569 | ret = ssl_read(&conn->ssl[num].ssl, (unsigned char *)buf, buffersize);
|
---|
| 570 |
|
---|
| 571 | if(ret <= 0) {
|
---|
| 572 | if(ret == POLARSSL_ERR_SSL_PEER_CLOSE_NOTIFY)
|
---|
| 573 | return 0;
|
---|
| 574 |
|
---|
| 575 | *curlcode = (ret == POLARSSL_ERR_NET_WANT_READ) ?
|
---|
| 576 | CURLE_AGAIN : CURLE_RECV_ERROR;
|
---|
| 577 | return -1;
|
---|
| 578 | }
|
---|
| 579 |
|
---|
| 580 | len = ret;
|
---|
| 581 |
|
---|
| 582 | return len;
|
---|
| 583 | }
|
---|
| 584 |
|
---|
| 585 | void Curl_polarssl_session_free(void *ptr)
|
---|
| 586 | {
|
---|
| 587 | free(ptr);
|
---|
| 588 | }
|
---|
| 589 |
|
---|
| 590 | /* 1.3.10 was the first rebranded version. All new releases (in 1.3 branch and
|
---|
| 591 | higher) will be mbed TLS branded.. */
|
---|
| 592 |
|
---|
| 593 | size_t Curl_polarssl_version(char *buffer, size_t size)
|
---|
| 594 | {
|
---|
| 595 | unsigned int version = version_get_number();
|
---|
| 596 | return snprintf(buffer, size, "%s/%d.%d.%d",
|
---|
| 597 | version >= 0x01030A00?"mbedTLS":"PolarSSL",
|
---|
| 598 | version>>24, (version>>16)&0xff, (version>>8)&0xff);
|
---|
| 599 | }
|
---|
| 600 |
|
---|
| 601 | static CURLcode
|
---|
| 602 | polarssl_connect_common(struct connectdata *conn,
|
---|
| 603 | int sockindex,
|
---|
| 604 | bool nonblocking,
|
---|
| 605 | bool *done)
|
---|
| 606 | {
|
---|
| 607 | CURLcode result;
|
---|
| 608 | struct SessionHandle *data = conn->data;
|
---|
| 609 | struct ssl_connect_data *connssl = &conn->ssl[sockindex];
|
---|
| 610 | curl_socket_t sockfd = conn->sock[sockindex];
|
---|
| 611 | long timeout_ms;
|
---|
| 612 | int what;
|
---|
| 613 |
|
---|
| 614 | /* check if the connection has already been established */
|
---|
| 615 | if(ssl_connection_complete == connssl->state) {
|
---|
| 616 | *done = TRUE;
|
---|
| 617 | return CURLE_OK;
|
---|
| 618 | }
|
---|
| 619 |
|
---|
| 620 | if(ssl_connect_1 == connssl->connecting_state) {
|
---|
| 621 | /* Find out how much more time we're allowed */
|
---|
| 622 | timeout_ms = Curl_timeleft(data, NULL, TRUE);
|
---|
| 623 |
|
---|
| 624 | if(timeout_ms < 0) {
|
---|
| 625 | /* no need to continue if time already is up */
|
---|
| 626 | failf(data, "SSL connection timeout");
|
---|
| 627 | return CURLE_OPERATION_TIMEDOUT;
|
---|
| 628 | }
|
---|
| 629 |
|
---|
| 630 | result = polarssl_connect_step1(conn, sockindex);
|
---|
| 631 | if(result)
|
---|
| 632 | return result;
|
---|
| 633 | }
|
---|
| 634 |
|
---|
| 635 | while(ssl_connect_2 == connssl->connecting_state ||
|
---|
| 636 | ssl_connect_2_reading == connssl->connecting_state ||
|
---|
| 637 | ssl_connect_2_writing == connssl->connecting_state) {
|
---|
| 638 |
|
---|
| 639 | /* check allowed time left */
|
---|
| 640 | timeout_ms = Curl_timeleft(data, NULL, TRUE);
|
---|
| 641 |
|
---|
| 642 | if(timeout_ms < 0) {
|
---|
| 643 | /* no need to continue if time already is up */
|
---|
| 644 | failf(data, "SSL connection timeout");
|
---|
| 645 | return CURLE_OPERATION_TIMEDOUT;
|
---|
| 646 | }
|
---|
| 647 |
|
---|
| 648 | /* if ssl is expecting something, check if it's available. */
|
---|
| 649 | if(connssl->connecting_state == ssl_connect_2_reading ||
|
---|
| 650 | connssl->connecting_state == ssl_connect_2_writing) {
|
---|
| 651 |
|
---|
| 652 | curl_socket_t writefd = ssl_connect_2_writing==
|
---|
| 653 | connssl->connecting_state?sockfd:CURL_SOCKET_BAD;
|
---|
| 654 | curl_socket_t readfd = ssl_connect_2_reading==
|
---|
| 655 | connssl->connecting_state?sockfd:CURL_SOCKET_BAD;
|
---|
| 656 |
|
---|
| 657 | what = Curl_socket_ready(readfd, writefd, nonblocking?0:timeout_ms);
|
---|
| 658 | if(what < 0) {
|
---|
| 659 | /* fatal error */
|
---|
| 660 | failf(data, "select/poll on SSL socket, errno: %d", SOCKERRNO);
|
---|
| 661 | return CURLE_SSL_CONNECT_ERROR;
|
---|
| 662 | }
|
---|
| 663 | else if(0 == what) {
|
---|
| 664 | if(nonblocking) {
|
---|
| 665 | *done = FALSE;
|
---|
| 666 | return CURLE_OK;
|
---|
| 667 | }
|
---|
| 668 | else {
|
---|
| 669 | /* timeout */
|
---|
| 670 | failf(data, "SSL connection timeout");
|
---|
| 671 | return CURLE_OPERATION_TIMEDOUT;
|
---|
| 672 | }
|
---|
| 673 | }
|
---|
| 674 | /* socket is readable or writable */
|
---|
| 675 | }
|
---|
| 676 |
|
---|
| 677 | /* Run transaction, and return to the caller if it failed or if
|
---|
| 678 | * this connection is part of a multi handle and this loop would
|
---|
| 679 | * execute again. This permits the owner of a multi handle to
|
---|
| 680 | * abort a connection attempt before step2 has completed while
|
---|
| 681 | * ensuring that a client using select() or epoll() will always
|
---|
| 682 | * have a valid fdset to wait on.
|
---|
| 683 | */
|
---|
| 684 | result = polarssl_connect_step2(conn, sockindex);
|
---|
| 685 | if(result || (nonblocking &&
|
---|
| 686 | (ssl_connect_2 == connssl->connecting_state ||
|
---|
| 687 | ssl_connect_2_reading == connssl->connecting_state ||
|
---|
| 688 | ssl_connect_2_writing == connssl->connecting_state)))
|
---|
| 689 | return result;
|
---|
| 690 |
|
---|
| 691 | } /* repeat step2 until all transactions are done. */
|
---|
| 692 |
|
---|
| 693 | if(ssl_connect_3 == connssl->connecting_state) {
|
---|
| 694 | result = polarssl_connect_step3(conn, sockindex);
|
---|
| 695 | if(result)
|
---|
| 696 | return result;
|
---|
| 697 | }
|
---|
| 698 |
|
---|
| 699 | if(ssl_connect_done == connssl->connecting_state) {
|
---|
| 700 | connssl->state = ssl_connection_complete;
|
---|
| 701 | conn->recv[sockindex] = polarssl_recv;
|
---|
| 702 | conn->send[sockindex] = polarssl_send;
|
---|
| 703 | *done = TRUE;
|
---|
| 704 | }
|
---|
| 705 | else
|
---|
| 706 | *done = FALSE;
|
---|
| 707 |
|
---|
| 708 | /* Reset our connect state machine */
|
---|
| 709 | connssl->connecting_state = ssl_connect_1;
|
---|
| 710 |
|
---|
| 711 | return CURLE_OK;
|
---|
| 712 | }
|
---|
| 713 |
|
---|
| 714 | CURLcode
|
---|
| 715 | Curl_polarssl_connect_nonblocking(struct connectdata *conn,
|
---|
| 716 | int sockindex,
|
---|
| 717 | bool *done)
|
---|
| 718 | {
|
---|
| 719 | return polarssl_connect_common(conn, sockindex, TRUE, done);
|
---|
| 720 | }
|
---|
| 721 |
|
---|
| 722 |
|
---|
| 723 | CURLcode
|
---|
| 724 | Curl_polarssl_connect(struct connectdata *conn,
|
---|
| 725 | int sockindex)
|
---|
| 726 | {
|
---|
| 727 | CURLcode result;
|
---|
| 728 | bool done = FALSE;
|
---|
| 729 |
|
---|
| 730 | result = polarssl_connect_common(conn, sockindex, FALSE, &done);
|
---|
| 731 | if(result)
|
---|
| 732 | return result;
|
---|
| 733 |
|
---|
| 734 | DEBUGASSERT(done);
|
---|
| 735 |
|
---|
| 736 | return CURLE_OK;
|
---|
| 737 | }
|
---|
| 738 |
|
---|
| 739 | /*
|
---|
| 740 | * return 0 error initializing SSL
|
---|
| 741 | * return 1 SSL initialized successfully
|
---|
| 742 | */
|
---|
| 743 | int Curl_polarssl_init(void)
|
---|
| 744 | {
|
---|
| 745 | return Curl_polarsslthreadlock_thread_setup();
|
---|
| 746 | }
|
---|
| 747 |
|
---|
| 748 | void Curl_polarssl_cleanup(void)
|
---|
| 749 | {
|
---|
| 750 | (void)Curl_polarsslthreadlock_thread_cleanup();
|
---|
| 751 | }
|
---|
| 752 |
|
---|
| 753 | #endif /* USE_POLARSSL */
|
---|