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;
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409 | return CURLE_OK;
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410 |
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411 | case POLARSSL_ERR_NET_WANT_WRITE:
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412 | connssl->connecting_state = ssl_connect_2_writing;
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413 | return CURLE_OK;
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414 |
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415 | default:
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416 | #ifdef POLARSSL_ERROR_C
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417 | error_strerror(ret, errorbuf, sizeof(errorbuf));
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418 | #endif /* POLARSSL_ERROR_C */
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419 | failf(data, "ssl_handshake returned - PolarSSL: (-0x%04X) %s",
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420 | -ret, errorbuf);
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421 | return CURLE_SSL_CONNECT_ERROR;
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422 | }
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423 |
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424 | infof(data, "PolarSSL: Handshake complete, cipher is %s\n",
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425 | ssl_get_ciphersuite(&conn->ssl[sockindex].ssl) );
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426 |
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427 | ret = ssl_get_verify_result(&conn->ssl[sockindex].ssl);
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428 |
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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 */
|
---|