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) 1998 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al.
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9 | *
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10 | * This software is licensed as described in the file COPYING, which
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11 | * you should have received as part of this distribution. The terms
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12 | * are also available at https://curl.haxx.se/docs/copyright.html.
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13 | *
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14 | * You may opt to use, copy, modify, merge, publish, distribute and/or sell
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15 | * copies of the Software, and permit persons to whom the Software is
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16 | * furnished to do so, under the terms of the COPYING file.
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17 | *
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18 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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19 | * KIND, either express or implied.
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20 | *
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21 | ***************************************************************************/
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22 |
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23 | /* This file is for implementing all "generic" SSL functions that all libcurl
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24 | internals should use. It is then responsible for calling the proper
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25 | "backend" function.
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26 |
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27 | SSL-functions in libcurl should call functions in this source file, and not
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28 | to any specific SSL-layer.
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29 |
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30 | Curl_ssl_ - prefix for generic ones
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31 |
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32 | Note that this source code uses the functions of the configured SSL
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33 | backend via the global Curl_ssl instance.
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34 |
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35 | "SSL/TLS Strong Encryption: An Introduction"
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36 | https://httpd.apache.org/docs/2.0/ssl/ssl_intro.html
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37 | */
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38 |
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39 | #include "curl_setup.h"
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40 |
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41 | #ifdef HAVE_SYS_TYPES_H
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42 | #include <sys/types.h>
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43 | #endif
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44 | #ifdef HAVE_SYS_STAT_H
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45 | #include <sys/stat.h>
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46 | #endif
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47 | #ifdef HAVE_FCNTL_H
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48 | #include <fcntl.h>
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49 | #endif
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50 |
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51 | #include "urldata.h"
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52 |
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53 | #include "vtls.h" /* generic SSL protos etc */
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54 | #include "slist.h"
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55 | #include "sendf.h"
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56 | #include "strcase.h"
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57 | #include "url.h"
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58 | #include "progress.h"
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59 | #include "share.h"
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60 | #include "multiif.h"
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61 | #include "timeval.h"
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62 | #include "curl_md5.h"
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63 | #include "warnless.h"
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64 | #include "curl_base64.h"
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65 | #include "curl_printf.h"
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66 |
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67 | /* The last #include files should be: */
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68 | #include "curl_memory.h"
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69 | #include "memdebug.h"
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70 |
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71 | /* convenience macro to check if this handle is using a shared SSL session */
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72 | #define SSLSESSION_SHARED(data) (data->share && \
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73 | (data->share->specifier & \
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74 | (1<<CURL_LOCK_DATA_SSL_SESSION)))
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75 |
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76 | #define CLONE_STRING(var) \
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77 | if(source->var) { \
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78 | dest->var = strdup(source->var); \
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79 | if(!dest->var) \
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80 | return FALSE; \
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81 | } \
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82 | else \
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83 | dest->var = NULL;
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84 |
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85 | bool
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86 | Curl_ssl_config_matches(struct ssl_primary_config* data,
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87 | struct ssl_primary_config* needle)
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88 | {
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89 | if((data->version == needle->version) &&
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90 | (data->version_max == needle->version_max) &&
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91 | (data->verifypeer == needle->verifypeer) &&
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92 | (data->verifyhost == needle->verifyhost) &&
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93 | (data->verifystatus == needle->verifystatus) &&
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94 | Curl_safe_strcasecompare(data->CApath, needle->CApath) &&
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95 | Curl_safe_strcasecompare(data->CAfile, needle->CAfile) &&
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96 | Curl_safe_strcasecompare(data->clientcert, needle->clientcert) &&
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97 | Curl_safe_strcasecompare(data->random_file, needle->random_file) &&
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98 | Curl_safe_strcasecompare(data->egdsocket, needle->egdsocket) &&
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99 | Curl_safe_strcasecompare(data->cipher_list, needle->cipher_list))
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100 | return TRUE;
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101 |
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102 | return FALSE;
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103 | }
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104 |
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105 | bool
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106 | Curl_clone_primary_ssl_config(struct ssl_primary_config *source,
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107 | struct ssl_primary_config *dest)
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108 | {
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109 | dest->version = source->version;
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110 | dest->version_max = source->version_max;
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111 | dest->verifypeer = source->verifypeer;
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112 | dest->verifyhost = source->verifyhost;
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113 | dest->verifystatus = source->verifystatus;
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114 | dest->sessionid = source->sessionid;
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115 |
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116 | CLONE_STRING(CApath);
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117 | CLONE_STRING(CAfile);
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118 | CLONE_STRING(clientcert);
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119 | CLONE_STRING(random_file);
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120 | CLONE_STRING(egdsocket);
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121 | CLONE_STRING(cipher_list);
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122 |
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123 | return TRUE;
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124 | }
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125 |
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126 | void Curl_free_primary_ssl_config(struct ssl_primary_config* sslc)
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127 | {
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128 | Curl_safefree(sslc->CApath);
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129 | Curl_safefree(sslc->CAfile);
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130 | Curl_safefree(sslc->clientcert);
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131 | Curl_safefree(sslc->random_file);
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132 | Curl_safefree(sslc->egdsocket);
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133 | Curl_safefree(sslc->cipher_list);
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134 | }
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135 |
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136 | #ifdef USE_SSL
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137 | static int multissl_init(const struct Curl_ssl *backend);
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138 | #endif
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139 |
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140 | int Curl_ssl_backend(void)
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141 | {
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142 | #ifdef USE_SSL
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143 | multissl_init(NULL);
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144 | return Curl_ssl->info.id;
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145 | #else
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146 | return (int)CURLSSLBACKEND_NONE;
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147 | #endif
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148 | }
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149 |
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150 | #ifdef USE_SSL
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151 |
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152 | /* "global" init done? */
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153 | static bool init_ssl = FALSE;
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154 |
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155 | /**
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156 | * Global SSL init
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157 | *
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158 | * @retval 0 error initializing SSL
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159 | * @retval 1 SSL initialized successfully
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160 | */
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161 | int Curl_ssl_init(void)
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162 | {
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163 | /* make sure this is only done once */
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164 | if(init_ssl)
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165 | return 1;
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166 | init_ssl = TRUE; /* never again */
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167 |
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168 | return Curl_ssl->init();
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169 | }
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170 |
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171 |
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172 | /* Global cleanup */
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173 | void Curl_ssl_cleanup(void)
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174 | {
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175 | if(init_ssl) {
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176 | /* only cleanup if we did a previous init */
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177 | Curl_ssl->cleanup();
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178 | init_ssl = FALSE;
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179 | }
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180 | }
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181 |
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182 | static bool ssl_prefs_check(struct Curl_easy *data)
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183 | {
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184 | /* check for CURLOPT_SSLVERSION invalid parameter value */
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185 | const long sslver = data->set.ssl.primary.version;
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186 | if((sslver < 0) || (sslver >= CURL_SSLVERSION_LAST)) {
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187 | failf(data, "Unrecognized parameter value passed via CURLOPT_SSLVERSION");
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188 | return FALSE;
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189 | }
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190 |
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191 | switch(data->set.ssl.primary.version_max) {
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192 | case CURL_SSLVERSION_MAX_NONE:
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193 | case CURL_SSLVERSION_MAX_DEFAULT:
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194 | break;
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195 |
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196 | default:
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197 | if((data->set.ssl.primary.version_max >> 16) < sslver) {
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198 | failf(data, "CURL_SSLVERSION_MAX incompatible with CURL_SSLVERSION");
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199 | return FALSE;
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200 | }
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201 | }
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202 |
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203 | return TRUE;
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204 | }
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205 |
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206 | static CURLcode
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207 | ssl_connect_init_proxy(struct connectdata *conn, int sockindex)
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208 | {
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209 | DEBUGASSERT(conn->bits.proxy_ssl_connected[sockindex]);
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210 | if(ssl_connection_complete == conn->ssl[sockindex].state &&
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211 | !conn->proxy_ssl[sockindex].use) {
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212 | struct ssl_backend_data *pbdata;
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213 |
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214 | if(!Curl_ssl->support_https_proxy)
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215 | return CURLE_NOT_BUILT_IN;
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216 |
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217 | /* The pointers to the ssl backend data, which is opaque here, are swapped
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218 | rather than move the contents. */
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219 | pbdata = conn->proxy_ssl[sockindex].backend;
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220 | conn->proxy_ssl[sockindex] = conn->ssl[sockindex];
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221 |
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222 | memset(&conn->ssl[sockindex], 0, sizeof(conn->ssl[sockindex]));
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223 | memset(pbdata, 0, Curl_ssl->sizeof_ssl_backend_data);
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224 |
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225 | conn->ssl[sockindex].backend = pbdata;
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226 | }
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227 | return CURLE_OK;
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228 | }
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229 |
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230 | CURLcode
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231 | Curl_ssl_connect(struct connectdata *conn, int sockindex)
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232 | {
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233 | CURLcode result;
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234 |
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235 | if(conn->bits.proxy_ssl_connected[sockindex]) {
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236 | result = ssl_connect_init_proxy(conn, sockindex);
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237 | if(result)
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238 | return result;
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239 | }
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240 |
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241 | if(!ssl_prefs_check(conn->data))
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242 | return CURLE_SSL_CONNECT_ERROR;
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243 |
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244 | /* mark this is being ssl-enabled from here on. */
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245 | conn->ssl[sockindex].use = TRUE;
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246 | conn->ssl[sockindex].state = ssl_connection_negotiating;
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247 |
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248 | result = Curl_ssl->connect(conn, sockindex);
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249 |
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250 | if(!result)
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251 | Curl_pgrsTime(conn->data, TIMER_APPCONNECT); /* SSL is connected */
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252 |
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253 | return result;
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254 | }
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255 |
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256 | CURLcode
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257 | Curl_ssl_connect_nonblocking(struct connectdata *conn, int sockindex,
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258 | bool *done)
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259 | {
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260 | CURLcode result;
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261 | if(conn->bits.proxy_ssl_connected[sockindex]) {
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262 | result = ssl_connect_init_proxy(conn, sockindex);
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263 | if(result)
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264 | return result;
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265 | }
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266 |
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267 | if(!ssl_prefs_check(conn->data))
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268 | return CURLE_SSL_CONNECT_ERROR;
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269 |
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270 | /* mark this is being ssl requested from here on. */
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271 | conn->ssl[sockindex].use = TRUE;
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272 | result = Curl_ssl->connect_nonblocking(conn, sockindex, done);
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273 | if(!result && *done)
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274 | Curl_pgrsTime(conn->data, TIMER_APPCONNECT); /* SSL is connected */
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275 | return result;
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276 | }
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277 |
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278 | /*
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279 | * Lock shared SSL session data
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280 | */
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281 | void Curl_ssl_sessionid_lock(struct connectdata *conn)
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282 | {
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283 | if(SSLSESSION_SHARED(conn->data))
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284 | Curl_share_lock(conn->data,
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285 | CURL_LOCK_DATA_SSL_SESSION, CURL_LOCK_ACCESS_SINGLE);
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286 | }
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287 |
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288 | /*
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289 | * Unlock shared SSL session data
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290 | */
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291 | void Curl_ssl_sessionid_unlock(struct connectdata *conn)
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292 | {
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293 | if(SSLSESSION_SHARED(conn->data))
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294 | Curl_share_unlock(conn->data, CURL_LOCK_DATA_SSL_SESSION);
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295 | }
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296 |
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297 | /*
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298 | * Check if there's a session ID for the given connection in the cache, and if
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299 | * there's one suitable, it is provided. Returns TRUE when no entry matched.
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300 | */
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301 | bool Curl_ssl_getsessionid(struct connectdata *conn,
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302 | void **ssl_sessionid,
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303 | size_t *idsize, /* set 0 if unknown */
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304 | int sockindex)
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305 | {
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306 | struct curl_ssl_session *check;
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307 | struct Curl_easy *data = conn->data;
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308 | size_t i;
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309 | long *general_age;
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310 | bool no_match = TRUE;
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311 |
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312 | const bool isProxy = CONNECT_PROXY_SSL();
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313 | struct ssl_primary_config * const ssl_config = isProxy ?
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314 | &conn->proxy_ssl_config :
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315 | &conn->ssl_config;
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316 | const char * const name = isProxy ? conn->http_proxy.host.name :
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317 | conn->host.name;
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318 | int port = isProxy ? (int)conn->port : conn->remote_port;
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319 | *ssl_sessionid = NULL;
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320 |
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321 | DEBUGASSERT(SSL_SET_OPTION(primary.sessionid));
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322 |
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323 | if(!SSL_SET_OPTION(primary.sessionid))
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324 | /* session ID re-use is disabled */
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325 | return TRUE;
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326 |
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327 | /* Lock if shared */
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328 | if(SSLSESSION_SHARED(data))
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329 | general_age = &data->share->sessionage;
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330 | else
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331 | general_age = &data->state.sessionage;
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332 |
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333 | for(i = 0; i < data->set.general_ssl.max_ssl_sessions; i++) {
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334 | check = &data->state.session[i];
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335 | if(!check->sessionid)
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336 | /* not session ID means blank entry */
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337 | continue;
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338 | if(strcasecompare(name, check->name) &&
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339 | ((!conn->bits.conn_to_host && !check->conn_to_host) ||
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340 | (conn->bits.conn_to_host && check->conn_to_host &&
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341 | strcasecompare(conn->conn_to_host.name, check->conn_to_host))) &&
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342 | ((!conn->bits.conn_to_port && check->conn_to_port == -1) ||
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343 | (conn->bits.conn_to_port && check->conn_to_port != -1 &&
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344 | conn->conn_to_port == check->conn_to_port)) &&
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345 | (port == check->remote_port) &&
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346 | strcasecompare(conn->handler->scheme, check->scheme) &&
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347 | Curl_ssl_config_matches(ssl_config, &check->ssl_config)) {
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348 | /* yes, we have a session ID! */
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349 | (*general_age)++; /* increase general age */
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350 | check->age = *general_age; /* set this as used in this age */
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351 | *ssl_sessionid = check->sessionid;
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352 | if(idsize)
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353 | *idsize = check->idsize;
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354 | no_match = FALSE;
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355 | break;
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356 | }
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357 | }
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358 |
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359 | return no_match;
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360 | }
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361 |
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362 | /*
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363 | * Kill a single session ID entry in the cache.
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364 | */
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365 | void Curl_ssl_kill_session(struct curl_ssl_session *session)
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366 | {
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367 | if(session->sessionid) {
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368 | /* defensive check */
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369 |
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370 | /* free the ID the SSL-layer specific way */
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371 | Curl_ssl->session_free(session->sessionid);
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372 |
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373 | session->sessionid = NULL;
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374 | session->age = 0; /* fresh */
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375 |
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376 | Curl_free_primary_ssl_config(&session->ssl_config);
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377 |
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378 | Curl_safefree(session->name);
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379 | Curl_safefree(session->conn_to_host);
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380 | }
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381 | }
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382 |
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383 | /*
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384 | * Delete the given session ID from the cache.
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385 | */
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386 | void Curl_ssl_delsessionid(struct connectdata *conn, void *ssl_sessionid)
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387 | {
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388 | size_t i;
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389 | struct Curl_easy *data = conn->data;
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390 |
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391 | for(i = 0; i < data->set.general_ssl.max_ssl_sessions; i++) {
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392 | struct curl_ssl_session *check = &data->state.session[i];
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393 |
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394 | if(check->sessionid == ssl_sessionid) {
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395 | Curl_ssl_kill_session(check);
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396 | break;
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397 | }
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398 | }
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399 | }
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400 |
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401 | /*
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402 | * Store session id in the session cache. The ID passed on to this function
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403 | * must already have been extracted and allocated the proper way for the SSL
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404 | * layer. Curl_XXXX_session_free() will be called to free/kill the session ID
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405 | * later on.
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406 | */
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407 | CURLcode Curl_ssl_addsessionid(struct connectdata *conn,
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408 | void *ssl_sessionid,
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409 | size_t idsize,
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410 | int sockindex)
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411 | {
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412 | size_t i;
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413 | struct Curl_easy *data = conn->data; /* the mother of all structs */
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414 | struct curl_ssl_session *store = &data->state.session[0];
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415 | long oldest_age = data->state.session[0].age; /* zero if unused */
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416 | char *clone_host;
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417 | char *clone_conn_to_host;
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418 | int conn_to_port;
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419 | long *general_age;
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420 | const bool isProxy = CONNECT_PROXY_SSL();
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421 | struct ssl_primary_config * const ssl_config = isProxy ?
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422 | &conn->proxy_ssl_config :
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423 | &conn->ssl_config;
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424 |
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425 | DEBUGASSERT(SSL_SET_OPTION(primary.sessionid));
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426 |
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427 | clone_host = strdup(isProxy ? conn->http_proxy.host.name : conn->host.name);
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428 | if(!clone_host)
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429 | return CURLE_OUT_OF_MEMORY; /* bail out */
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430 |
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431 | if(conn->bits.conn_to_host) {
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432 | clone_conn_to_host = strdup(conn->conn_to_host.name);
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433 | if(!clone_conn_to_host) {
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434 | free(clone_host);
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435 | return CURLE_OUT_OF_MEMORY; /* bail out */
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436 | }
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437 | }
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438 | else
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439 | clone_conn_to_host = NULL;
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440 |
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441 | if(conn->bits.conn_to_port)
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442 | conn_to_port = conn->conn_to_port;
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443 | else
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444 | conn_to_port = -1;
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445 |
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446 | /* Now we should add the session ID and the host name to the cache, (remove
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447 | the oldest if necessary) */
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448 |
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449 | /* If using shared SSL session, lock! */
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450 | if(SSLSESSION_SHARED(data)) {
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451 | general_age = &data->share->sessionage;
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452 | }
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453 | else {
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454 | general_age = &data->state.sessionage;
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455 | }
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456 |
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457 | /* find an empty slot for us, or find the oldest */
|
---|
458 | for(i = 1; (i < data->set.general_ssl.max_ssl_sessions) &&
|
---|
459 | data->state.session[i].sessionid; i++) {
|
---|
460 | if(data->state.session[i].age < oldest_age) {
|
---|
461 | oldest_age = data->state.session[i].age;
|
---|
462 | store = &data->state.session[i];
|
---|
463 | }
|
---|
464 | }
|
---|
465 | if(i == data->set.general_ssl.max_ssl_sessions)
|
---|
466 | /* cache is full, we must "kill" the oldest entry! */
|
---|
467 | Curl_ssl_kill_session(store);
|
---|
468 | else
|
---|
469 | store = &data->state.session[i]; /* use this slot */
|
---|
470 |
|
---|
471 | /* now init the session struct wisely */
|
---|
472 | store->sessionid = ssl_sessionid;
|
---|
473 | store->idsize = idsize;
|
---|
474 | store->age = *general_age; /* set current age */
|
---|
475 | /* free it if there's one already present */
|
---|
476 | free(store->name);
|
---|
477 | free(store->conn_to_host);
|
---|
478 | store->name = clone_host; /* clone host name */
|
---|
479 | store->conn_to_host = clone_conn_to_host; /* clone connect to host name */
|
---|
480 | store->conn_to_port = conn_to_port; /* connect to port number */
|
---|
481 | /* port number */
|
---|
482 | store->remote_port = isProxy ? (int)conn->port : conn->remote_port;
|
---|
483 | store->scheme = conn->handler->scheme;
|
---|
484 |
|
---|
485 | if(!Curl_clone_primary_ssl_config(ssl_config, &store->ssl_config)) {
|
---|
486 | store->sessionid = NULL; /* let caller free sessionid */
|
---|
487 | free(clone_host);
|
---|
488 | free(clone_conn_to_host);
|
---|
489 | return CURLE_OUT_OF_MEMORY;
|
---|
490 | }
|
---|
491 |
|
---|
492 | return CURLE_OK;
|
---|
493 | }
|
---|
494 |
|
---|
495 |
|
---|
496 | void Curl_ssl_close_all(struct Curl_easy *data)
|
---|
497 | {
|
---|
498 | size_t i;
|
---|
499 | /* kill the session ID cache if not shared */
|
---|
500 | if(data->state.session && !SSLSESSION_SHARED(data)) {
|
---|
501 | for(i = 0; i < data->set.general_ssl.max_ssl_sessions; i++)
|
---|
502 | /* the single-killer function handles empty table slots */
|
---|
503 | Curl_ssl_kill_session(&data->state.session[i]);
|
---|
504 |
|
---|
505 | /* free the cache data */
|
---|
506 | Curl_safefree(data->state.session);
|
---|
507 | }
|
---|
508 |
|
---|
509 | Curl_ssl->close_all(data);
|
---|
510 | }
|
---|
511 |
|
---|
512 | #if defined(USE_OPENSSL) || defined(USE_GNUTLS) || defined(USE_SCHANNEL) || \
|
---|
513 | defined(USE_DARWINSSL) || defined(USE_POLARSSL) || defined(USE_NSS) || \
|
---|
514 | defined(USE_MBEDTLS)
|
---|
515 | int Curl_ssl_getsock(struct connectdata *conn, curl_socket_t *socks,
|
---|
516 | int numsocks)
|
---|
517 | {
|
---|
518 | struct ssl_connect_data *connssl = &conn->ssl[FIRSTSOCKET];
|
---|
519 |
|
---|
520 | if(!numsocks)
|
---|
521 | return GETSOCK_BLANK;
|
---|
522 |
|
---|
523 | if(connssl->connecting_state == ssl_connect_2_writing) {
|
---|
524 | /* write mode */
|
---|
525 | socks[0] = conn->sock[FIRSTSOCKET];
|
---|
526 | return GETSOCK_WRITESOCK(0);
|
---|
527 | }
|
---|
528 | if(connssl->connecting_state == ssl_connect_2_reading) {
|
---|
529 | /* read mode */
|
---|
530 | socks[0] = conn->sock[FIRSTSOCKET];
|
---|
531 | return GETSOCK_READSOCK(0);
|
---|
532 | }
|
---|
533 |
|
---|
534 | return GETSOCK_BLANK;
|
---|
535 | }
|
---|
536 | #else
|
---|
537 | int Curl_ssl_getsock(struct connectdata *conn,
|
---|
538 | curl_socket_t *socks,
|
---|
539 | int numsocks)
|
---|
540 | {
|
---|
541 | (void)conn;
|
---|
542 | (void)socks;
|
---|
543 | (void)numsocks;
|
---|
544 | return GETSOCK_BLANK;
|
---|
545 | }
|
---|
546 | /* USE_OPENSSL || USE_GNUTLS || USE_SCHANNEL || USE_DARWINSSL || USE_NSS */
|
---|
547 | #endif
|
---|
548 |
|
---|
549 | void Curl_ssl_close(struct connectdata *conn, int sockindex)
|
---|
550 | {
|
---|
551 | DEBUGASSERT((sockindex <= 1) && (sockindex >= -1));
|
---|
552 | Curl_ssl->close_one(conn, sockindex);
|
---|
553 | }
|
---|
554 |
|
---|
555 | CURLcode Curl_ssl_shutdown(struct connectdata *conn, int sockindex)
|
---|
556 | {
|
---|
557 | if(Curl_ssl->shutdown(conn, sockindex))
|
---|
558 | return CURLE_SSL_SHUTDOWN_FAILED;
|
---|
559 |
|
---|
560 | conn->ssl[sockindex].use = FALSE; /* get back to ordinary socket usage */
|
---|
561 | conn->ssl[sockindex].state = ssl_connection_none;
|
---|
562 |
|
---|
563 | conn->recv[sockindex] = Curl_recv_plain;
|
---|
564 | conn->send[sockindex] = Curl_send_plain;
|
---|
565 |
|
---|
566 | return CURLE_OK;
|
---|
567 | }
|
---|
568 |
|
---|
569 | /* Selects an SSL crypto engine
|
---|
570 | */
|
---|
571 | CURLcode Curl_ssl_set_engine(struct Curl_easy *data, const char *engine)
|
---|
572 | {
|
---|
573 | return Curl_ssl->set_engine(data, engine);
|
---|
574 | }
|
---|
575 |
|
---|
576 | /* Selects the default SSL crypto engine
|
---|
577 | */
|
---|
578 | CURLcode Curl_ssl_set_engine_default(struct Curl_easy *data)
|
---|
579 | {
|
---|
580 | return Curl_ssl->set_engine_default(data);
|
---|
581 | }
|
---|
582 |
|
---|
583 | /* Return list of OpenSSL crypto engine names. */
|
---|
584 | struct curl_slist *Curl_ssl_engines_list(struct Curl_easy *data)
|
---|
585 | {
|
---|
586 | return Curl_ssl->engines_list(data);
|
---|
587 | }
|
---|
588 |
|
---|
589 | /*
|
---|
590 | * This sets up a session ID cache to the specified size. Make sure this code
|
---|
591 | * is agnostic to what underlying SSL technology we use.
|
---|
592 | */
|
---|
593 | CURLcode Curl_ssl_initsessions(struct Curl_easy *data, size_t amount)
|
---|
594 | {
|
---|
595 | struct curl_ssl_session *session;
|
---|
596 |
|
---|
597 | if(data->state.session)
|
---|
598 | /* this is just a precaution to prevent multiple inits */
|
---|
599 | return CURLE_OK;
|
---|
600 |
|
---|
601 | session = calloc(amount, sizeof(struct curl_ssl_session));
|
---|
602 | if(!session)
|
---|
603 | return CURLE_OUT_OF_MEMORY;
|
---|
604 |
|
---|
605 | /* store the info in the SSL section */
|
---|
606 | data->set.general_ssl.max_ssl_sessions = amount;
|
---|
607 | data->state.session = session;
|
---|
608 | data->state.sessionage = 1; /* this is brand new */
|
---|
609 | return CURLE_OK;
|
---|
610 | }
|
---|
611 |
|
---|
612 | static size_t Curl_multissl_version(char *buffer, size_t size);
|
---|
613 |
|
---|
614 | size_t Curl_ssl_version(char *buffer, size_t size)
|
---|
615 | {
|
---|
616 | #ifdef CURL_WITH_MULTI_SSL
|
---|
617 | return Curl_multissl_version(buffer, size);
|
---|
618 | #else
|
---|
619 | return Curl_ssl->version(buffer, size);
|
---|
620 | #endif
|
---|
621 | }
|
---|
622 |
|
---|
623 | /*
|
---|
624 | * This function tries to determine connection status.
|
---|
625 | *
|
---|
626 | * Return codes:
|
---|
627 | * 1 means the connection is still in place
|
---|
628 | * 0 means the connection has been closed
|
---|
629 | * -1 means the connection status is unknown
|
---|
630 | */
|
---|
631 | int Curl_ssl_check_cxn(struct connectdata *conn)
|
---|
632 | {
|
---|
633 | return Curl_ssl->check_cxn(conn);
|
---|
634 | }
|
---|
635 |
|
---|
636 | bool Curl_ssl_data_pending(const struct connectdata *conn,
|
---|
637 | int connindex)
|
---|
638 | {
|
---|
639 | return Curl_ssl->data_pending(conn, connindex);
|
---|
640 | }
|
---|
641 |
|
---|
642 | void Curl_ssl_free_certinfo(struct Curl_easy *data)
|
---|
643 | {
|
---|
644 | int i;
|
---|
645 | struct curl_certinfo *ci = &data->info.certs;
|
---|
646 |
|
---|
647 | if(ci->num_of_certs) {
|
---|
648 | /* free all individual lists used */
|
---|
649 | for(i = 0; i<ci->num_of_certs; i++) {
|
---|
650 | curl_slist_free_all(ci->certinfo[i]);
|
---|
651 | ci->certinfo[i] = NULL;
|
---|
652 | }
|
---|
653 |
|
---|
654 | free(ci->certinfo); /* free the actual array too */
|
---|
655 | ci->certinfo = NULL;
|
---|
656 | ci->num_of_certs = 0;
|
---|
657 | }
|
---|
658 | }
|
---|
659 |
|
---|
660 | CURLcode Curl_ssl_init_certinfo(struct Curl_easy *data, int num)
|
---|
661 | {
|
---|
662 | struct curl_certinfo *ci = &data->info.certs;
|
---|
663 | struct curl_slist **table;
|
---|
664 |
|
---|
665 | /* Free any previous certificate information structures */
|
---|
666 | Curl_ssl_free_certinfo(data);
|
---|
667 |
|
---|
668 | /* Allocate the required certificate information structures */
|
---|
669 | table = calloc((size_t) num, sizeof(struct curl_slist *));
|
---|
670 | if(!table)
|
---|
671 | return CURLE_OUT_OF_MEMORY;
|
---|
672 |
|
---|
673 | ci->num_of_certs = num;
|
---|
674 | ci->certinfo = table;
|
---|
675 |
|
---|
676 | return CURLE_OK;
|
---|
677 | }
|
---|
678 |
|
---|
679 | /*
|
---|
680 | * 'value' is NOT a zero terminated string
|
---|
681 | */
|
---|
682 | CURLcode Curl_ssl_push_certinfo_len(struct Curl_easy *data,
|
---|
683 | int certnum,
|
---|
684 | const char *label,
|
---|
685 | const char *value,
|
---|
686 | size_t valuelen)
|
---|
687 | {
|
---|
688 | struct curl_certinfo *ci = &data->info.certs;
|
---|
689 | char *output;
|
---|
690 | struct curl_slist *nl;
|
---|
691 | CURLcode result = CURLE_OK;
|
---|
692 | size_t labellen = strlen(label);
|
---|
693 | size_t outlen = labellen + 1 + valuelen + 1; /* label:value\0 */
|
---|
694 |
|
---|
695 | output = malloc(outlen);
|
---|
696 | if(!output)
|
---|
697 | return CURLE_OUT_OF_MEMORY;
|
---|
698 |
|
---|
699 | /* sprintf the label and colon */
|
---|
700 | snprintf(output, outlen, "%s:", label);
|
---|
701 |
|
---|
702 | /* memcpy the value (it might not be zero terminated) */
|
---|
703 | memcpy(&output[labellen + 1], value, valuelen);
|
---|
704 |
|
---|
705 | /* zero terminate the output */
|
---|
706 | output[labellen + 1 + valuelen] = 0;
|
---|
707 |
|
---|
708 | nl = Curl_slist_append_nodup(ci->certinfo[certnum], output);
|
---|
709 | if(!nl) {
|
---|
710 | free(output);
|
---|
711 | curl_slist_free_all(ci->certinfo[certnum]);
|
---|
712 | result = CURLE_OUT_OF_MEMORY;
|
---|
713 | }
|
---|
714 |
|
---|
715 | ci->certinfo[certnum] = nl;
|
---|
716 | return result;
|
---|
717 | }
|
---|
718 |
|
---|
719 | /*
|
---|
720 | * This is a convenience function for push_certinfo_len that takes a zero
|
---|
721 | * terminated value.
|
---|
722 | */
|
---|
723 | CURLcode Curl_ssl_push_certinfo(struct Curl_easy *data,
|
---|
724 | int certnum,
|
---|
725 | const char *label,
|
---|
726 | const char *value)
|
---|
727 | {
|
---|
728 | size_t valuelen = strlen(value);
|
---|
729 |
|
---|
730 | return Curl_ssl_push_certinfo_len(data, certnum, label, value, valuelen);
|
---|
731 | }
|
---|
732 |
|
---|
733 | CURLcode Curl_ssl_random(struct Curl_easy *data,
|
---|
734 | unsigned char *entropy,
|
---|
735 | size_t length)
|
---|
736 | {
|
---|
737 | return Curl_ssl->random(data, entropy, length);
|
---|
738 | }
|
---|
739 |
|
---|
740 | /*
|
---|
741 | * Public key pem to der conversion
|
---|
742 | */
|
---|
743 |
|
---|
744 | static CURLcode pubkey_pem_to_der(const char *pem,
|
---|
745 | unsigned char **der, size_t *der_len)
|
---|
746 | {
|
---|
747 | char *stripped_pem, *begin_pos, *end_pos;
|
---|
748 | size_t pem_count, stripped_pem_count = 0, pem_len;
|
---|
749 | CURLcode result;
|
---|
750 |
|
---|
751 | /* if no pem, exit. */
|
---|
752 | if(!pem)
|
---|
753 | return CURLE_BAD_CONTENT_ENCODING;
|
---|
754 |
|
---|
755 | begin_pos = strstr(pem, "-----BEGIN PUBLIC KEY-----");
|
---|
756 | if(!begin_pos)
|
---|
757 | return CURLE_BAD_CONTENT_ENCODING;
|
---|
758 |
|
---|
759 | pem_count = begin_pos - pem;
|
---|
760 | /* Invalid if not at beginning AND not directly following \n */
|
---|
761 | if(0 != pem_count && '\n' != pem[pem_count - 1])
|
---|
762 | return CURLE_BAD_CONTENT_ENCODING;
|
---|
763 |
|
---|
764 | /* 26 is length of "-----BEGIN PUBLIC KEY-----" */
|
---|
765 | pem_count += 26;
|
---|
766 |
|
---|
767 | /* Invalid if not directly following \n */
|
---|
768 | end_pos = strstr(pem + pem_count, "\n-----END PUBLIC KEY-----");
|
---|
769 | if(!end_pos)
|
---|
770 | return CURLE_BAD_CONTENT_ENCODING;
|
---|
771 |
|
---|
772 | pem_len = end_pos - pem;
|
---|
773 |
|
---|
774 | stripped_pem = malloc(pem_len - pem_count + 1);
|
---|
775 | if(!stripped_pem)
|
---|
776 | return CURLE_OUT_OF_MEMORY;
|
---|
777 |
|
---|
778 | /*
|
---|
779 | * Here we loop through the pem array one character at a time between the
|
---|
780 | * correct indices, and place each character that is not '\n' or '\r'
|
---|
781 | * into the stripped_pem array, which should represent the raw base64 string
|
---|
782 | */
|
---|
783 | while(pem_count < pem_len) {
|
---|
784 | if('\n' != pem[pem_count] && '\r' != pem[pem_count])
|
---|
785 | stripped_pem[stripped_pem_count++] = pem[pem_count];
|
---|
786 | ++pem_count;
|
---|
787 | }
|
---|
788 | /* Place the null terminator in the correct place */
|
---|
789 | stripped_pem[stripped_pem_count] = '\0';
|
---|
790 |
|
---|
791 | result = Curl_base64_decode(stripped_pem, der, der_len);
|
---|
792 |
|
---|
793 | Curl_safefree(stripped_pem);
|
---|
794 |
|
---|
795 | return result;
|
---|
796 | }
|
---|
797 |
|
---|
798 | /*
|
---|
799 | * Generic pinned public key check.
|
---|
800 | */
|
---|
801 |
|
---|
802 | CURLcode Curl_pin_peer_pubkey(struct Curl_easy *data,
|
---|
803 | const char *pinnedpubkey,
|
---|
804 | const unsigned char *pubkey, size_t pubkeylen)
|
---|
805 | {
|
---|
806 | FILE *fp;
|
---|
807 | unsigned char *buf = NULL, *pem_ptr = NULL;
|
---|
808 | long filesize;
|
---|
809 | size_t size, pem_len;
|
---|
810 | CURLcode pem_read;
|
---|
811 | CURLcode result = CURLE_SSL_PINNEDPUBKEYNOTMATCH;
|
---|
812 | CURLcode encode;
|
---|
813 | size_t encodedlen, pinkeylen;
|
---|
814 | char *encoded, *pinkeycopy, *begin_pos, *end_pos;
|
---|
815 | unsigned char *sha256sumdigest = NULL;
|
---|
816 |
|
---|
817 | /* if a path wasn't specified, don't pin */
|
---|
818 | if(!pinnedpubkey)
|
---|
819 | return CURLE_OK;
|
---|
820 | if(!pubkey || !pubkeylen)
|
---|
821 | return result;
|
---|
822 |
|
---|
823 | /* only do this if pinnedpubkey starts with "sha256//", length 8 */
|
---|
824 | if(strncmp(pinnedpubkey, "sha256//", 8) == 0) {
|
---|
825 | if(!Curl_ssl->sha256sum) {
|
---|
826 | /* without sha256 support, this cannot match */
|
---|
827 | return result;
|
---|
828 | }
|
---|
829 |
|
---|
830 | /* compute sha256sum of public key */
|
---|
831 | sha256sumdigest = malloc(CURL_SHA256_DIGEST_LENGTH);
|
---|
832 | if(!sha256sumdigest)
|
---|
833 | return CURLE_OUT_OF_MEMORY;
|
---|
834 | Curl_ssl->sha256sum(pubkey, pubkeylen,
|
---|
835 | sha256sumdigest, CURL_SHA256_DIGEST_LENGTH);
|
---|
836 | encode = Curl_base64_encode(data, (char *)sha256sumdigest,
|
---|
837 | CURL_SHA256_DIGEST_LENGTH, &encoded,
|
---|
838 | &encodedlen);
|
---|
839 | Curl_safefree(sha256sumdigest);
|
---|
840 |
|
---|
841 | if(encode)
|
---|
842 | return encode;
|
---|
843 |
|
---|
844 | infof(data, "\t public key hash: sha256//%s\n", encoded);
|
---|
845 |
|
---|
846 | /* it starts with sha256//, copy so we can modify it */
|
---|
847 | pinkeylen = strlen(pinnedpubkey) + 1;
|
---|
848 | pinkeycopy = malloc(pinkeylen);
|
---|
849 | if(!pinkeycopy) {
|
---|
850 | Curl_safefree(encoded);
|
---|
851 | return CURLE_OUT_OF_MEMORY;
|
---|
852 | }
|
---|
853 | memcpy(pinkeycopy, pinnedpubkey, pinkeylen);
|
---|
854 | /* point begin_pos to the copy, and start extracting keys */
|
---|
855 | begin_pos = pinkeycopy;
|
---|
856 | do {
|
---|
857 | end_pos = strstr(begin_pos, ";sha256//");
|
---|
858 | /*
|
---|
859 | * if there is an end_pos, null terminate,
|
---|
860 | * otherwise it'll go to the end of the original string
|
---|
861 | */
|
---|
862 | if(end_pos)
|
---|
863 | end_pos[0] = '\0';
|
---|
864 |
|
---|
865 | /* compare base64 sha256 digests, 8 is the length of "sha256//" */
|
---|
866 | if(encodedlen == strlen(begin_pos + 8) &&
|
---|
867 | !memcmp(encoded, begin_pos + 8, encodedlen)) {
|
---|
868 | result = CURLE_OK;
|
---|
869 | break;
|
---|
870 | }
|
---|
871 |
|
---|
872 | /*
|
---|
873 | * change back the null-terminator we changed earlier,
|
---|
874 | * and look for next begin
|
---|
875 | */
|
---|
876 | if(end_pos) {
|
---|
877 | end_pos[0] = ';';
|
---|
878 | begin_pos = strstr(end_pos, "sha256//");
|
---|
879 | }
|
---|
880 | } while(end_pos && begin_pos);
|
---|
881 | Curl_safefree(encoded);
|
---|
882 | Curl_safefree(pinkeycopy);
|
---|
883 | return result;
|
---|
884 | }
|
---|
885 |
|
---|
886 | fp = fopen(pinnedpubkey, "rb");
|
---|
887 | if(!fp)
|
---|
888 | return result;
|
---|
889 |
|
---|
890 | do {
|
---|
891 | /* Determine the file's size */
|
---|
892 | if(fseek(fp, 0, SEEK_END))
|
---|
893 | break;
|
---|
894 | filesize = ftell(fp);
|
---|
895 | if(fseek(fp, 0, SEEK_SET))
|
---|
896 | break;
|
---|
897 | if(filesize < 0 || filesize > MAX_PINNED_PUBKEY_SIZE)
|
---|
898 | break;
|
---|
899 |
|
---|
900 | /*
|
---|
901 | * if the size of our certificate is bigger than the file
|
---|
902 | * size then it can't match
|
---|
903 | */
|
---|
904 | size = curlx_sotouz((curl_off_t) filesize);
|
---|
905 | if(pubkeylen > size)
|
---|
906 | break;
|
---|
907 |
|
---|
908 | /*
|
---|
909 | * Allocate buffer for the pinned key
|
---|
910 | * With 1 additional byte for null terminator in case of PEM key
|
---|
911 | */
|
---|
912 | buf = malloc(size + 1);
|
---|
913 | if(!buf)
|
---|
914 | break;
|
---|
915 |
|
---|
916 | /* Returns number of elements read, which should be 1 */
|
---|
917 | if((int) fread(buf, size, 1, fp) != 1)
|
---|
918 | break;
|
---|
919 |
|
---|
920 | /* If the sizes are the same, it can't be base64 encoded, must be der */
|
---|
921 | if(pubkeylen == size) {
|
---|
922 | if(!memcmp(pubkey, buf, pubkeylen))
|
---|
923 | result = CURLE_OK;
|
---|
924 | break;
|
---|
925 | }
|
---|
926 |
|
---|
927 | /*
|
---|
928 | * Otherwise we will assume it's PEM and try to decode it
|
---|
929 | * after placing null terminator
|
---|
930 | */
|
---|
931 | buf[size] = '\0';
|
---|
932 | pem_read = pubkey_pem_to_der((const char *)buf, &pem_ptr, &pem_len);
|
---|
933 | /* if it wasn't read successfully, exit */
|
---|
934 | if(pem_read)
|
---|
935 | break;
|
---|
936 |
|
---|
937 | /*
|
---|
938 | * if the size of our certificate doesn't match the size of
|
---|
939 | * the decoded file, they can't be the same, otherwise compare
|
---|
940 | */
|
---|
941 | if(pubkeylen == pem_len && !memcmp(pubkey, pem_ptr, pubkeylen))
|
---|
942 | result = CURLE_OK;
|
---|
943 | } while(0);
|
---|
944 |
|
---|
945 | Curl_safefree(buf);
|
---|
946 | Curl_safefree(pem_ptr);
|
---|
947 | fclose(fp);
|
---|
948 |
|
---|
949 | return result;
|
---|
950 | }
|
---|
951 |
|
---|
952 | #ifndef CURL_DISABLE_CRYPTO_AUTH
|
---|
953 | CURLcode Curl_ssl_md5sum(unsigned char *tmp, /* input */
|
---|
954 | size_t tmplen,
|
---|
955 | unsigned char *md5sum, /* output */
|
---|
956 | size_t md5len)
|
---|
957 | {
|
---|
958 | return Curl_ssl->md5sum(tmp, tmplen, md5sum, md5len);
|
---|
959 | }
|
---|
960 | #endif
|
---|
961 |
|
---|
962 | /*
|
---|
963 | * Check whether the SSL backend supports the status_request extension.
|
---|
964 | */
|
---|
965 | bool Curl_ssl_cert_status_request(void)
|
---|
966 | {
|
---|
967 | return Curl_ssl->cert_status_request();
|
---|
968 | }
|
---|
969 |
|
---|
970 | /*
|
---|
971 | * Check whether the SSL backend supports false start.
|
---|
972 | */
|
---|
973 | bool Curl_ssl_false_start(void)
|
---|
974 | {
|
---|
975 | return Curl_ssl->false_start();
|
---|
976 | }
|
---|
977 |
|
---|
978 | /*
|
---|
979 | * Default implementations for unsupported functions.
|
---|
980 | */
|
---|
981 |
|
---|
982 | int Curl_none_init(void)
|
---|
983 | {
|
---|
984 | return 1;
|
---|
985 | }
|
---|
986 |
|
---|
987 | void Curl_none_cleanup(void)
|
---|
988 | { }
|
---|
989 |
|
---|
990 | int Curl_none_shutdown(struct connectdata *conn UNUSED_PARAM,
|
---|
991 | int sockindex UNUSED_PARAM)
|
---|
992 | {
|
---|
993 | (void)conn;
|
---|
994 | (void)sockindex;
|
---|
995 | return 0;
|
---|
996 | }
|
---|
997 |
|
---|
998 | int Curl_none_check_cxn(struct connectdata *conn UNUSED_PARAM)
|
---|
999 | {
|
---|
1000 | (void)conn;
|
---|
1001 | return -1;
|
---|
1002 | }
|
---|
1003 |
|
---|
1004 | CURLcode Curl_none_random(struct Curl_easy *data UNUSED_PARAM,
|
---|
1005 | unsigned char *entropy UNUSED_PARAM,
|
---|
1006 | size_t length UNUSED_PARAM)
|
---|
1007 | {
|
---|
1008 | (void)data;
|
---|
1009 | (void)entropy;
|
---|
1010 | (void)length;
|
---|
1011 | return CURLE_NOT_BUILT_IN;
|
---|
1012 | }
|
---|
1013 |
|
---|
1014 | void Curl_none_close_all(struct Curl_easy *data UNUSED_PARAM)
|
---|
1015 | {
|
---|
1016 | (void)data;
|
---|
1017 | }
|
---|
1018 |
|
---|
1019 | void Curl_none_session_free(void *ptr UNUSED_PARAM)
|
---|
1020 | {
|
---|
1021 | (void)ptr;
|
---|
1022 | }
|
---|
1023 |
|
---|
1024 | bool Curl_none_data_pending(const struct connectdata *conn UNUSED_PARAM,
|
---|
1025 | int connindex UNUSED_PARAM)
|
---|
1026 | {
|
---|
1027 | (void)conn;
|
---|
1028 | (void)connindex;
|
---|
1029 | return 0;
|
---|
1030 | }
|
---|
1031 |
|
---|
1032 | bool Curl_none_cert_status_request(void)
|
---|
1033 | {
|
---|
1034 | return FALSE;
|
---|
1035 | }
|
---|
1036 |
|
---|
1037 | CURLcode Curl_none_set_engine(struct Curl_easy *data UNUSED_PARAM,
|
---|
1038 | const char *engine UNUSED_PARAM)
|
---|
1039 | {
|
---|
1040 | (void)data;
|
---|
1041 | (void)engine;
|
---|
1042 | return CURLE_NOT_BUILT_IN;
|
---|
1043 | }
|
---|
1044 |
|
---|
1045 | CURLcode Curl_none_set_engine_default(struct Curl_easy *data UNUSED_PARAM)
|
---|
1046 | {
|
---|
1047 | (void)data;
|
---|
1048 | return CURLE_NOT_BUILT_IN;
|
---|
1049 | }
|
---|
1050 |
|
---|
1051 | struct curl_slist *Curl_none_engines_list(struct Curl_easy *data UNUSED_PARAM)
|
---|
1052 | {
|
---|
1053 | (void)data;
|
---|
1054 | return (struct curl_slist *)NULL;
|
---|
1055 | }
|
---|
1056 |
|
---|
1057 | bool Curl_none_false_start(void)
|
---|
1058 | {
|
---|
1059 | return FALSE;
|
---|
1060 | }
|
---|
1061 |
|
---|
1062 | #ifndef CURL_DISABLE_CRYPTO_AUTH
|
---|
1063 | CURLcode Curl_none_md5sum(unsigned char *input, size_t inputlen,
|
---|
1064 | unsigned char *md5sum, size_t md5len UNUSED_PARAM)
|
---|
1065 | {
|
---|
1066 | MD5_context *MD5pw;
|
---|
1067 |
|
---|
1068 | (void)md5len;
|
---|
1069 |
|
---|
1070 | MD5pw = Curl_MD5_init(Curl_DIGEST_MD5);
|
---|
1071 | if(!MD5pw)
|
---|
1072 | return CURLE_OUT_OF_MEMORY;
|
---|
1073 | Curl_MD5_update(MD5pw, input, curlx_uztoui(inputlen));
|
---|
1074 | Curl_MD5_final(MD5pw, md5sum);
|
---|
1075 | return CURLE_OK;
|
---|
1076 | }
|
---|
1077 | #else
|
---|
1078 | CURLcode Curl_none_md5sum(unsigned char *input UNUSED_PARAM,
|
---|
1079 | size_t inputlen UNUSED_PARAM,
|
---|
1080 | unsigned char *md5sum UNUSED_PARAM,
|
---|
1081 | size_t md5len UNUSED_PARAM)
|
---|
1082 | {
|
---|
1083 | (void)input;
|
---|
1084 | (void)inputlen;
|
---|
1085 | (void)md5sum;
|
---|
1086 | (void)md5len;
|
---|
1087 | return CURLE_NOT_BUILT_IN;
|
---|
1088 | }
|
---|
1089 | #endif
|
---|
1090 |
|
---|
1091 | static int Curl_multissl_init(void)
|
---|
1092 | {
|
---|
1093 | if(multissl_init(NULL))
|
---|
1094 | return 1;
|
---|
1095 | return Curl_ssl->init();
|
---|
1096 | }
|
---|
1097 |
|
---|
1098 | static CURLcode Curl_multissl_connect(struct connectdata *conn, int sockindex)
|
---|
1099 | {
|
---|
1100 | if(multissl_init(NULL))
|
---|
1101 | return CURLE_FAILED_INIT;
|
---|
1102 | return Curl_ssl->connect(conn, sockindex);
|
---|
1103 | }
|
---|
1104 |
|
---|
1105 | static CURLcode Curl_multissl_connect_nonblocking(struct connectdata *conn,
|
---|
1106 | int sockindex, bool *done)
|
---|
1107 | {
|
---|
1108 | if(multissl_init(NULL))
|
---|
1109 | return CURLE_FAILED_INIT;
|
---|
1110 | return Curl_ssl->connect_nonblocking(conn, sockindex, done);
|
---|
1111 | }
|
---|
1112 |
|
---|
1113 | static void *Curl_multissl_get_internals(struct ssl_connect_data *connssl,
|
---|
1114 | CURLINFO info)
|
---|
1115 | {
|
---|
1116 | if(multissl_init(NULL))
|
---|
1117 | return NULL;
|
---|
1118 | return Curl_ssl->get_internals(connssl, info);
|
---|
1119 | }
|
---|
1120 |
|
---|
1121 | static void Curl_multissl_close(struct connectdata *conn, int sockindex)
|
---|
1122 | {
|
---|
1123 | if(multissl_init(NULL))
|
---|
1124 | return;
|
---|
1125 | Curl_ssl->close_one(conn, sockindex);
|
---|
1126 | }
|
---|
1127 |
|
---|
1128 | static const struct Curl_ssl Curl_ssl_multi = {
|
---|
1129 | { CURLSSLBACKEND_NONE, "multi" }, /* info */
|
---|
1130 |
|
---|
1131 | 0, /* have_ca_path */
|
---|
1132 | 0, /* have_certinfo */
|
---|
1133 | 0, /* have_pinnedpubkey */
|
---|
1134 | 0, /* have_ssl_ctx */
|
---|
1135 | 0, /* support_https_proxy */
|
---|
1136 |
|
---|
1137 | (size_t)-1, /* something insanely large to be on the safe side */
|
---|
1138 |
|
---|
1139 | Curl_multissl_init, /* init */
|
---|
1140 | Curl_none_cleanup, /* cleanup */
|
---|
1141 | Curl_multissl_version, /* version */
|
---|
1142 | Curl_none_check_cxn, /* check_cxn */
|
---|
1143 | Curl_none_shutdown, /* shutdown */
|
---|
1144 | Curl_none_data_pending, /* data_pending */
|
---|
1145 | Curl_none_random, /* random */
|
---|
1146 | Curl_none_cert_status_request, /* cert_status_request */
|
---|
1147 | Curl_multissl_connect, /* connect */
|
---|
1148 | Curl_multissl_connect_nonblocking, /* connect_nonblocking */
|
---|
1149 | Curl_multissl_get_internals, /* get_internals */
|
---|
1150 | Curl_multissl_close, /* close_one */
|
---|
1151 | Curl_none_close_all, /* close_all */
|
---|
1152 | Curl_none_session_free, /* session_free */
|
---|
1153 | Curl_none_set_engine, /* set_engine */
|
---|
1154 | Curl_none_set_engine_default, /* set_engine_default */
|
---|
1155 | Curl_none_engines_list, /* engines_list */
|
---|
1156 | Curl_none_false_start, /* false_start */
|
---|
1157 | Curl_none_md5sum, /* md5sum */
|
---|
1158 | NULL /* sha256sum */
|
---|
1159 | };
|
---|
1160 |
|
---|
1161 | const struct Curl_ssl *Curl_ssl =
|
---|
1162 | #if defined(CURL_WITH_MULTI_SSL)
|
---|
1163 | &Curl_ssl_multi;
|
---|
1164 | #elif defined(USE_AXTLS)
|
---|
1165 | &Curl_ssl_axtls;
|
---|
1166 | #elif defined(USE_CYASSL)
|
---|
1167 | &Curl_ssl_cyassl;
|
---|
1168 | #elif defined(USE_DARWINSSL)
|
---|
1169 | &Curl_ssl_darwinssl;
|
---|
1170 | #elif defined(USE_GNUTLS)
|
---|
1171 | &Curl_ssl_gnutls;
|
---|
1172 | #elif defined(USE_GSKIT)
|
---|
1173 | &Curl_ssl_gskit;
|
---|
1174 | #elif defined(USE_MBEDTLS)
|
---|
1175 | &Curl_ssl_mbedtls;
|
---|
1176 | #elif defined(USE_NSS)
|
---|
1177 | &Curl_ssl_nss;
|
---|
1178 | #elif defined(USE_OPENSSL)
|
---|
1179 | &Curl_ssl_openssl;
|
---|
1180 | #elif defined(USE_POLARSSL)
|
---|
1181 | &Curl_ssl_polarssl;
|
---|
1182 | #elif defined(USE_SCHANNEL)
|
---|
1183 | &Curl_ssl_schannel;
|
---|
1184 | #else
|
---|
1185 | #error "Missing struct Curl_ssl for selected SSL backend"
|
---|
1186 | #endif
|
---|
1187 |
|
---|
1188 | static const struct Curl_ssl *available_backends[] = {
|
---|
1189 | #if defined(USE_AXTLS)
|
---|
1190 | &Curl_ssl_axtls,
|
---|
1191 | #endif
|
---|
1192 | #if defined(USE_CYASSL)
|
---|
1193 | &Curl_ssl_cyassl,
|
---|
1194 | #endif
|
---|
1195 | #if defined(USE_DARWINSSL)
|
---|
1196 | &Curl_ssl_darwinssl,
|
---|
1197 | #endif
|
---|
1198 | #if defined(USE_GNUTLS)
|
---|
1199 | &Curl_ssl_gnutls,
|
---|
1200 | #endif
|
---|
1201 | #if defined(USE_GSKIT)
|
---|
1202 | &Curl_ssl_gskit,
|
---|
1203 | #endif
|
---|
1204 | #if defined(USE_MBEDTLS)
|
---|
1205 | &Curl_ssl_mbedtls,
|
---|
1206 | #endif
|
---|
1207 | #if defined(USE_NSS)
|
---|
1208 | &Curl_ssl_nss,
|
---|
1209 | #endif
|
---|
1210 | #if defined(USE_OPENSSL)
|
---|
1211 | &Curl_ssl_openssl,
|
---|
1212 | #endif
|
---|
1213 | #if defined(USE_POLARSSL)
|
---|
1214 | &Curl_ssl_polarssl,
|
---|
1215 | #endif
|
---|
1216 | #if defined(USE_SCHANNEL)
|
---|
1217 | &Curl_ssl_schannel,
|
---|
1218 | #endif
|
---|
1219 | NULL
|
---|
1220 | };
|
---|
1221 |
|
---|
1222 | static size_t Curl_multissl_version(char *buffer, size_t size)
|
---|
1223 | {
|
---|
1224 | static const struct Curl_ssl *selected;
|
---|
1225 | static char backends[200];
|
---|
1226 | static size_t total;
|
---|
1227 | const struct Curl_ssl *current;
|
---|
1228 |
|
---|
1229 | current = Curl_ssl == &Curl_ssl_multi ? available_backends[0] : Curl_ssl;
|
---|
1230 |
|
---|
1231 | if(current != selected) {
|
---|
1232 | char *p = backends;
|
---|
1233 | int i;
|
---|
1234 |
|
---|
1235 | selected = current;
|
---|
1236 |
|
---|
1237 | for(i = 0; available_backends[i]; i++) {
|
---|
1238 | if(i)
|
---|
1239 | *(p++) = ' ';
|
---|
1240 | if(selected != available_backends[i])
|
---|
1241 | *(p++) = '(';
|
---|
1242 | p += available_backends[i]->version(p, backends + sizeof(backends) - p);
|
---|
1243 | if(selected != available_backends[i])
|
---|
1244 | *(p++) = ')';
|
---|
1245 | }
|
---|
1246 | *p = '\0';
|
---|
1247 | total = p - backends;
|
---|
1248 | }
|
---|
1249 |
|
---|
1250 | if(size < total)
|
---|
1251 | memcpy(buffer, backends, total + 1);
|
---|
1252 | else {
|
---|
1253 | memcpy(buffer, backends, size - 1);
|
---|
1254 | buffer[size - 1] = '\0';
|
---|
1255 | }
|
---|
1256 |
|
---|
1257 | return total;
|
---|
1258 | }
|
---|
1259 |
|
---|
1260 | static int multissl_init(const struct Curl_ssl *backend)
|
---|
1261 | {
|
---|
1262 | const char *env;
|
---|
1263 | int i;
|
---|
1264 |
|
---|
1265 | if(Curl_ssl != &Curl_ssl_multi)
|
---|
1266 | return 1;
|
---|
1267 |
|
---|
1268 | if(backend) {
|
---|
1269 | Curl_ssl = backend;
|
---|
1270 | return 0;
|
---|
1271 | }
|
---|
1272 |
|
---|
1273 | if(!available_backends[0])
|
---|
1274 | return 1;
|
---|
1275 |
|
---|
1276 | env = getenv("CURL_SSL_BACKEND");
|
---|
1277 | #ifdef CURL_DEFAULT_SSL_BACKEND
|
---|
1278 | if(!env)
|
---|
1279 | env = CURL_DEFAULT_SSL_BACKEND;
|
---|
1280 | #endif
|
---|
1281 | if(env) {
|
---|
1282 | for(i = 0; available_backends[i]; i++) {
|
---|
1283 | if(strcasecompare(env, available_backends[i]->info.name)) {
|
---|
1284 | Curl_ssl = available_backends[i];
|
---|
1285 | return 0;
|
---|
1286 | }
|
---|
1287 | }
|
---|
1288 | }
|
---|
1289 |
|
---|
1290 | /* Fall back to first available backend */
|
---|
1291 | Curl_ssl = available_backends[0];
|
---|
1292 | return 0;
|
---|
1293 | }
|
---|
1294 |
|
---|
1295 | CURLsslset curl_global_sslset(curl_sslbackend id, const char *name,
|
---|
1296 | const curl_ssl_backend ***avail)
|
---|
1297 | {
|
---|
1298 | int i;
|
---|
1299 |
|
---|
1300 | if(Curl_ssl != &Curl_ssl_multi)
|
---|
1301 | return id == Curl_ssl->info.id ? CURLSSLSET_OK : CURLSSLSET_TOO_LATE;
|
---|
1302 |
|
---|
1303 | for(i = 0; available_backends[i]; i++) {
|
---|
1304 | if(available_backends[i]->info.id == id ||
|
---|
1305 | (name && strcasecompare(available_backends[i]->info.name, name))) {
|
---|
1306 | multissl_init(available_backends[i]);
|
---|
1307 | return CURLSSLSET_OK;
|
---|
1308 | }
|
---|
1309 | }
|
---|
1310 |
|
---|
1311 | if(avail)
|
---|
1312 | *avail = (const curl_ssl_backend **)&available_backends;
|
---|
1313 | return CURLSSLSET_UNKNOWN_BACKEND;
|
---|
1314 | }
|
---|
1315 |
|
---|
1316 | #else /* USE_SSL */
|
---|
1317 | CURLsslset curl_global_sslset(curl_sslbackend id, const char *name,
|
---|
1318 | const curl_ssl_backend ***avail)
|
---|
1319 | {
|
---|
1320 | (void)id;
|
---|
1321 | (void)name;
|
---|
1322 | (void)avail;
|
---|
1323 | return CURLSSLSET_NO_BACKENDS;
|
---|
1324 | }
|
---|
1325 |
|
---|
1326 | #endif /* !USE_SSL */
|
---|