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 - 2015, 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 | /*
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24 | * Source file for all CyaSSL-specific code for the TLS/SSL layer. No code
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25 | * but vtls.c should ever call or use these functions.
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26 | *
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27 | */
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28 |
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29 | #include "curl_setup.h"
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30 |
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31 | #ifdef USE_CYASSL
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32 |
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33 | #define WOLFSSL_OPTIONS_IGNORE_SYS
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34 | /* CyaSSL's version.h, which should contain only the version, should come
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35 | before all other CyaSSL includes and be immediately followed by build config
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36 | aka options.h. https://curl.haxx.se/mail/lib-2015-04/0069.html */
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37 | #include <cyassl/version.h>
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38 | #if defined(HAVE_CYASSL_OPTIONS_H) && (LIBCYASSL_VERSION_HEX > 0x03004008)
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39 | #if defined(CYASSL_API) || defined(WOLFSSL_API)
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40 | /* Safety measure. If either is defined some API include was already included
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41 | and that's a problem since options.h hasn't been included yet. */
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42 | #error "CyaSSL API was included before the CyaSSL build options."
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43 | #endif
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44 | #include <cyassl/options.h>
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45 | #endif
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46 |
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47 | #ifdef HAVE_LIMITS_H
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48 | #include <limits.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 | #include "sendf.h"
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53 | #include "inet_pton.h"
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54 | #include "cyassl.h"
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55 | #include "vtls.h"
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56 | #include "parsedate.h"
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57 | #include "connect.h" /* for the connect timeout */
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58 | #include "select.h"
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59 | #include "rawstr.h"
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60 | #include "x509asn1.h"
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61 | #include "curl_printf.h"
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62 |
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63 | #include <cyassl/ssl.h>
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64 | #ifdef HAVE_CYASSL_ERROR_SSL_H
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65 | #include <cyassl/error-ssl.h>
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66 | #else
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67 | #include <cyassl/error.h>
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68 | #endif
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69 | #include <cyassl/ctaocrypt/random.h>
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70 | #include <cyassl/ctaocrypt/sha256.h>
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71 |
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72 | /* The last #include files should be: */
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73 | #include "curl_memory.h"
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74 | #include "memdebug.h"
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75 |
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76 | #if LIBCYASSL_VERSION_HEX < 0x02007002 /* < 2.7.2 */
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77 | #define CYASSL_MAX_ERROR_SZ 80
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78 | #endif
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79 |
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80 | static Curl_recv cyassl_recv;
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81 | static Curl_send cyassl_send;
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82 |
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83 |
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84 | static int do_file_type(const char *type)
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85 | {
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86 | if(!type || !type[0])
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87 | return SSL_FILETYPE_PEM;
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88 | if(Curl_raw_equal(type, "PEM"))
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89 | return SSL_FILETYPE_PEM;
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90 | if(Curl_raw_equal(type, "DER"))
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91 | return SSL_FILETYPE_ASN1;
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92 | return -1;
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93 | }
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94 |
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95 | /*
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96 | * This function loads all the client/CA certificates and CRLs. Setup the TLS
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97 | * layer and do all necessary magic.
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98 | */
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99 | static CURLcode
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100 | cyassl_connect_step1(struct connectdata *conn,
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101 | int sockindex)
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102 | {
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103 | char error_buffer[CYASSL_MAX_ERROR_SZ];
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104 | struct SessionHandle *data = conn->data;
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105 | struct ssl_connect_data* conssl = &conn->ssl[sockindex];
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106 | SSL_METHOD* req_method = NULL;
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107 | void* ssl_sessionid = NULL;
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108 | curl_socket_t sockfd = conn->sock[sockindex];
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109 | #ifdef HAVE_SNI
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110 | bool sni = FALSE;
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111 | #define use_sni(x) sni = (x)
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112 | #else
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113 | #define use_sni(x) Curl_nop_stmt
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114 | #endif
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115 |
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116 | if(conssl->state == ssl_connection_complete)
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117 | return CURLE_OK;
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118 |
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119 | /* check to see if we've been told to use an explicit SSL/TLS version */
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120 | switch(data->set.ssl.version) {
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121 | case CURL_SSLVERSION_DEFAULT:
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122 | case CURL_SSLVERSION_TLSv1:
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123 | #if LIBCYASSL_VERSION_HEX >= 0x03003000 /* >= 3.3.0 */
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124 | /* minimum protocol version is set later after the CTX object is created */
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125 | req_method = SSLv23_client_method();
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126 | #else
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127 | infof(data, "CyaSSL <3.3.0 cannot be configured to use TLS 1.0-1.2, "
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128 | "TLS 1.0 is used exclusively\n");
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129 | req_method = TLSv1_client_method();
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130 | #endif
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131 | use_sni(TRUE);
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132 | break;
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133 | case CURL_SSLVERSION_TLSv1_0:
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134 | req_method = TLSv1_client_method();
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135 | use_sni(TRUE);
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136 | break;
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137 | case CURL_SSLVERSION_TLSv1_1:
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138 | req_method = TLSv1_1_client_method();
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139 | use_sni(TRUE);
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140 | break;
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141 | case CURL_SSLVERSION_TLSv1_2:
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142 | req_method = TLSv1_2_client_method();
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143 | use_sni(TRUE);
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144 | break;
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145 | case CURL_SSLVERSION_SSLv3:
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146 | /* before WolfSSL SSLv3 was enabled by default, and starting in WolfSSL
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147 | we check for its presence since it is built without it by default */
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148 | #if !defined(WOLFSSL_VERSION) || defined(HAVE_WOLFSSLV3_CLIENT_METHOD)
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149 | req_method = SSLv3_client_method();
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150 | use_sni(FALSE);
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151 | #else
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152 | failf(data, "No support for SSLv3");
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153 | return CURLE_NOT_BUILT_IN;
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154 | #endif
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155 | break;
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156 | case CURL_SSLVERSION_SSLv2:
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157 | failf(data, "CyaSSL does not support SSLv2");
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158 | return CURLE_SSL_CONNECT_ERROR;
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159 | default:
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160 | failf(data, "Unrecognized parameter passed via CURLOPT_SSLVERSION");
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161 | return CURLE_SSL_CONNECT_ERROR;
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162 | }
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163 |
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164 | if(!req_method) {
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165 | failf(data, "SSL: couldn't create a method!");
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166 | return CURLE_OUT_OF_MEMORY;
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167 | }
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168 |
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169 | if(conssl->ctx)
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170 | SSL_CTX_free(conssl->ctx);
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171 | conssl->ctx = SSL_CTX_new(req_method);
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172 |
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173 | if(!conssl->ctx) {
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174 | failf(data, "SSL: couldn't create a context!");
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175 | return CURLE_OUT_OF_MEMORY;
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176 | }
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177 |
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178 | switch(data->set.ssl.version) {
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179 | case CURL_SSLVERSION_DEFAULT:
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180 | case CURL_SSLVERSION_TLSv1:
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181 | #if LIBCYASSL_VERSION_HEX > 0x03004006 /* > 3.4.6 */
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182 | /* Versions 3.3.0 to 3.4.6 we know the minimum protocol version is whatever
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183 | minimum version of TLS was built in and at least TLS 1.0. For later library
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184 | versions that could change (eg TLS 1.0 built in but defaults to TLS 1.1) so
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185 | we have this short circuit evaluation to find the minimum supported TLS
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186 | version. We use wolfSSL_CTX_SetMinVersion and not CyaSSL_SetMinVersion
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187 | because only the former will work before the user's CTX callback is called.
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188 | */
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189 | if((wolfSSL_CTX_SetMinVersion(conssl->ctx, WOLFSSL_TLSV1) != 1) &&
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190 | (wolfSSL_CTX_SetMinVersion(conssl->ctx, WOLFSSL_TLSV1_1) != 1) &&
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191 | (wolfSSL_CTX_SetMinVersion(conssl->ctx, WOLFSSL_TLSV1_2) != 1)) {
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192 | failf(data, "SSL: couldn't set the minimum protocol version");
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193 | return CURLE_SSL_CONNECT_ERROR;
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194 | }
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195 | #endif
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196 | break;
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197 | }
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198 |
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199 | #ifndef NO_FILESYSTEM
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200 | /* load trusted cacert */
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201 | if(data->set.str[STRING_SSL_CAFILE]) {
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202 | if(1 != SSL_CTX_load_verify_locations(conssl->ctx,
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203 | data->set.str[STRING_SSL_CAFILE],
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204 | data->set.str[STRING_SSL_CAPATH])) {
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205 | if(data->set.ssl.verifypeer) {
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206 | /* Fail if we insist on successfully verifying the server. */
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207 | failf(data, "error setting certificate verify locations:\n"
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208 | " CAfile: %s\n CApath: %s",
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209 | data->set.str[STRING_SSL_CAFILE]?
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210 | data->set.str[STRING_SSL_CAFILE]: "none",
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211 | data->set.str[STRING_SSL_CAPATH]?
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212 | data->set.str[STRING_SSL_CAPATH] : "none");
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213 | return CURLE_SSL_CACERT_BADFILE;
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214 | }
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215 | else {
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216 | /* Just continue with a warning if no strict certificate
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217 | verification is required. */
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218 | infof(data, "error setting certificate verify locations,"
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219 | " continuing anyway:\n");
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220 | }
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221 | }
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222 | else {
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223 | /* Everything is fine. */
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224 | infof(data, "successfully set certificate verify locations:\n");
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225 | }
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226 | infof(data,
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227 | " CAfile: %s\n"
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228 | " CApath: %s\n",
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229 | data->set.str[STRING_SSL_CAFILE] ? data->set.str[STRING_SSL_CAFILE]:
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230 | "none",
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231 | data->set.str[STRING_SSL_CAPATH] ? data->set.str[STRING_SSL_CAPATH]:
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232 | "none");
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233 | }
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234 |
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235 | /* Load the client certificate, and private key */
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236 | if(data->set.str[STRING_CERT] && data->set.str[STRING_KEY]) {
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237 | int file_type = do_file_type(data->set.str[STRING_CERT_TYPE]);
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238 |
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239 | if(SSL_CTX_use_certificate_file(conssl->ctx, data->set.str[STRING_CERT],
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240 | file_type) != 1) {
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241 | failf(data, "unable to use client certificate (no key or wrong pass"
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242 | " phrase?)");
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243 | return CURLE_SSL_CONNECT_ERROR;
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244 | }
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245 |
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246 | file_type = do_file_type(data->set.str[STRING_KEY_TYPE]);
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247 | if(SSL_CTX_use_PrivateKey_file(conssl->ctx, data->set.str[STRING_KEY],
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248 | file_type) != 1) {
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249 | failf(data, "unable to set private key");
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250 | return CURLE_SSL_CONNECT_ERROR;
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251 | }
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252 | }
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253 | #endif /* !NO_FILESYSTEM */
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254 |
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255 | /* SSL always tries to verify the peer, this only says whether it should
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256 | * fail to connect if the verification fails, or if it should continue
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257 | * anyway. In the latter case the result of the verification is checked with
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258 | * SSL_get_verify_result() below. */
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259 | SSL_CTX_set_verify(conssl->ctx,
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260 | data->set.ssl.verifypeer?SSL_VERIFY_PEER:SSL_VERIFY_NONE,
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261 | NULL);
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262 |
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263 | #ifdef HAVE_SNI
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264 | if(sni) {
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265 | struct in_addr addr4;
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266 | #ifdef ENABLE_IPV6
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267 | struct in6_addr addr6;
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268 | #endif
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269 | size_t hostname_len = strlen(conn->host.name);
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270 | if((hostname_len < USHRT_MAX) &&
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271 | (0 == Curl_inet_pton(AF_INET, conn->host.name, &addr4)) &&
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272 | #ifdef ENABLE_IPV6
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273 | (0 == Curl_inet_pton(AF_INET6, conn->host.name, &addr6)) &&
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274 | #endif
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275 | (CyaSSL_CTX_UseSNI(conssl->ctx, CYASSL_SNI_HOST_NAME, conn->host.name,
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276 | (unsigned short)hostname_len) != 1)) {
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277 | infof(data, "WARNING: failed to configure server name indication (SNI) "
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278 | "TLS extension\n");
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279 | }
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280 | }
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281 | #endif
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282 |
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283 | /* give application a chance to interfere with SSL set up. */
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284 | if(data->set.ssl.fsslctx) {
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285 | CURLcode result = CURLE_OK;
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286 | result = (*data->set.ssl.fsslctx)(data, conssl->ctx,
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287 | data->set.ssl.fsslctxp);
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288 | if(result) {
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289 | failf(data, "error signaled by ssl ctx callback");
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290 | return result;
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291 | }
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292 | }
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293 | #ifdef NO_FILESYSTEM
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294 | else if(data->set.ssl.verifypeer) {
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295 | failf(data, "SSL: Certificates couldn't be loaded because CyaSSL was built"
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296 | " with \"no filesystem\". Either disable peer verification"
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297 | " (insecure) or if you are building an application with libcurl you"
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298 | " can load certificates via CURLOPT_SSL_CTX_FUNCTION.");
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299 | return CURLE_SSL_CONNECT_ERROR;
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300 | }
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301 | #endif
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302 |
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303 | /* Let's make an SSL structure */
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304 | if(conssl->handle)
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305 | SSL_free(conssl->handle);
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306 | conssl->handle = SSL_new(conssl->ctx);
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307 | if(!conssl->handle) {
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308 | failf(data, "SSL: couldn't create a context (handle)!");
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309 | return CURLE_OUT_OF_MEMORY;
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310 | }
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311 |
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312 | /* Check if there's a cached ID we can/should use here! */
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313 | if(!Curl_ssl_getsessionid(conn, &ssl_sessionid, NULL)) {
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314 | /* we got a session id, use it! */
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315 | if(!SSL_set_session(conssl->handle, ssl_sessionid)) {
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316 | failf(data, "SSL: SSL_set_session failed: %s",
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317 | ERR_error_string(SSL_get_error(conssl->handle, 0), error_buffer));
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318 | return CURLE_SSL_CONNECT_ERROR;
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319 | }
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320 | /* Informational message */
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321 | infof (data, "SSL re-using session ID\n");
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322 | }
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323 |
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324 | /* pass the raw socket into the SSL layer */
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325 | if(!SSL_set_fd(conssl->handle, (int)sockfd)) {
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326 | failf(data, "SSL: SSL_set_fd failed");
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327 | return CURLE_SSL_CONNECT_ERROR;
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328 | }
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329 |
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330 | conssl->connecting_state = ssl_connect_2;
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331 | return CURLE_OK;
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332 | }
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333 |
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334 |
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335 | static CURLcode
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336 | cyassl_connect_step2(struct connectdata *conn,
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337 | int sockindex)
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338 | {
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339 | int ret = -1;
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340 | struct SessionHandle *data = conn->data;
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341 | struct ssl_connect_data* conssl = &conn->ssl[sockindex];
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342 |
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343 | conn->recv[sockindex] = cyassl_recv;
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344 | conn->send[sockindex] = cyassl_send;
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345 |
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346 | /* Enable RFC2818 checks */
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347 | if(data->set.ssl.verifyhost) {
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348 | ret = CyaSSL_check_domain_name(conssl->handle, conn->host.name);
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349 | if(ret == SSL_FAILURE)
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350 | return CURLE_OUT_OF_MEMORY;
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351 | }
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352 |
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353 | ret = SSL_connect(conssl->handle);
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354 | if(ret != 1) {
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355 | char error_buffer[CYASSL_MAX_ERROR_SZ];
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356 | int detail = SSL_get_error(conssl->handle, ret);
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357 |
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358 | if(SSL_ERROR_WANT_READ == detail) {
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359 | conssl->connecting_state = ssl_connect_2_reading;
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360 | return CURLE_OK;
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361 | }
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362 | else if(SSL_ERROR_WANT_WRITE == detail) {
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363 | conssl->connecting_state = ssl_connect_2_writing;
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364 | return CURLE_OK;
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365 | }
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366 | /* There is no easy way to override only the CN matching.
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367 | * This will enable the override of both mismatching SubjectAltNames
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368 | * as also mismatching CN fields */
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369 | else if(DOMAIN_NAME_MISMATCH == detail) {
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370 | #if 1
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371 | failf(data, "\tsubject alt name(s) or common name do not match \"%s\"\n",
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372 | conn->host.dispname);
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373 | return CURLE_PEER_FAILED_VERIFICATION;
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374 | #else
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375 | /* When the CyaSSL_check_domain_name() is used and you desire to continue
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376 | * on a DOMAIN_NAME_MISMATCH, i.e. 'data->set.ssl.verifyhost == 0',
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377 | * CyaSSL version 2.4.0 will fail with an INCOMPLETE_DATA error. The only
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378 | * way to do this is currently to switch the CyaSSL_check_domain_name()
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379 | * in and out based on the 'data->set.ssl.verifyhost' value. */
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380 | if(data->set.ssl.verifyhost) {
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381 | failf(data,
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382 | "\tsubject alt name(s) or common name do not match \"%s\"\n",
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383 | conn->host.dispname);
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384 | return CURLE_PEER_FAILED_VERIFICATION;
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385 | }
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386 | else {
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387 | infof(data,
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388 | "\tsubject alt name(s) and/or common name do not match \"%s\"\n",
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389 | conn->host.dispname);
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390 | return CURLE_OK;
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391 | }
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392 | #endif
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393 | }
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394 | #if LIBCYASSL_VERSION_HEX >= 0x02007000 /* 2.7.0 */
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395 | else if(ASN_NO_SIGNER_E == detail) {
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396 | if(data->set.ssl.verifypeer) {
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397 | failf(data, "\tCA signer not available for verification\n");
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398 | return CURLE_SSL_CACERT_BADFILE;
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399 | }
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400 | else {
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401 | /* Just continue with a warning if no strict certificate
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402 | verification is required. */
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403 | infof(data, "CA signer not available for verification, "
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404 | "continuing anyway\n");
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405 | }
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406 | }
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407 | #endif
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408 | else {
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409 | failf(data, "SSL_connect failed with error %d: %s", detail,
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410 | ERR_error_string(detail, error_buffer));
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411 | return CURLE_SSL_CONNECT_ERROR;
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412 | }
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413 | }
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414 |
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415 | if(data->set.str[STRING_SSL_PINNEDPUBLICKEY]) {
|
---|
416 | #if defined(HAVE_WOLFSSL_GET_PEER_CERTIFICATE) || \
|
---|
417 | defined(HAVE_CYASSL_GET_PEER_CERTIFICATE)
|
---|
418 | X509 *x509;
|
---|
419 | const char *x509_der;
|
---|
420 | int x509_der_len;
|
---|
421 | curl_X509certificate x509_parsed;
|
---|
422 | curl_asn1Element *pubkey;
|
---|
423 | CURLcode result;
|
---|
424 |
|
---|
425 | x509 = SSL_get_peer_certificate(conssl->handle);
|
---|
426 | if(!x509) {
|
---|
427 | failf(data, "SSL: failed retrieving server certificate");
|
---|
428 | return CURLE_SSL_PINNEDPUBKEYNOTMATCH;
|
---|
429 | }
|
---|
430 |
|
---|
431 | x509_der = (const char *)CyaSSL_X509_get_der(x509, &x509_der_len);
|
---|
432 | if(!x509_der) {
|
---|
433 | failf(data, "SSL: failed retrieving ASN.1 server certificate");
|
---|
434 | return CURLE_SSL_PINNEDPUBKEYNOTMATCH;
|
---|
435 | }
|
---|
436 |
|
---|
437 | memset(&x509_parsed, 0, sizeof x509_parsed);
|
---|
438 | Curl_parseX509(&x509_parsed, x509_der, x509_der + x509_der_len);
|
---|
439 |
|
---|
440 | pubkey = &x509_parsed.subjectPublicKeyInfo;
|
---|
441 | if(!pubkey->header || pubkey->end <= pubkey->header) {
|
---|
442 | failf(data, "SSL: failed retrieving public key from server certificate");
|
---|
443 | return CURLE_SSL_PINNEDPUBKEYNOTMATCH;
|
---|
444 | }
|
---|
445 |
|
---|
446 | result = Curl_pin_peer_pubkey(data,
|
---|
447 | data->set.str[STRING_SSL_PINNEDPUBLICKEY],
|
---|
448 | (const unsigned char *)pubkey->header,
|
---|
449 | (size_t)(pubkey->end - pubkey->header));
|
---|
450 | if(result) {
|
---|
451 | failf(data, "SSL: public key does not match pinned public key!");
|
---|
452 | return result;
|
---|
453 | }
|
---|
454 | #else
|
---|
455 | failf(data, "Library lacks pinning support built-in");
|
---|
456 | return CURLE_NOT_BUILT_IN;
|
---|
457 | #endif
|
---|
458 | }
|
---|
459 |
|
---|
460 | conssl->connecting_state = ssl_connect_3;
|
---|
461 | infof(data, "SSL connected\n");
|
---|
462 |
|
---|
463 | return CURLE_OK;
|
---|
464 | }
|
---|
465 |
|
---|
466 |
|
---|
467 | static CURLcode
|
---|
468 | cyassl_connect_step3(struct connectdata *conn,
|
---|
469 | int sockindex)
|
---|
470 | {
|
---|
471 | CURLcode result = CURLE_OK;
|
---|
472 | void *old_ssl_sessionid=NULL;
|
---|
473 | struct SessionHandle *data = conn->data;
|
---|
474 | struct ssl_connect_data *connssl = &conn->ssl[sockindex];
|
---|
475 | bool incache;
|
---|
476 | SSL_SESSION *our_ssl_sessionid;
|
---|
477 |
|
---|
478 | DEBUGASSERT(ssl_connect_3 == connssl->connecting_state);
|
---|
479 |
|
---|
480 | our_ssl_sessionid = SSL_get_session(connssl->handle);
|
---|
481 |
|
---|
482 | incache = !(Curl_ssl_getsessionid(conn, &old_ssl_sessionid, NULL));
|
---|
483 | if(incache) {
|
---|
484 | if(old_ssl_sessionid != our_ssl_sessionid) {
|
---|
485 | infof(data, "old SSL session ID is stale, removing\n");
|
---|
486 | Curl_ssl_delsessionid(conn, old_ssl_sessionid);
|
---|
487 | incache = FALSE;
|
---|
488 | }
|
---|
489 | }
|
---|
490 |
|
---|
491 | if(!incache) {
|
---|
492 | result = Curl_ssl_addsessionid(conn, our_ssl_sessionid,
|
---|
493 | 0 /* unknown size */);
|
---|
494 | if(result) {
|
---|
495 | failf(data, "failed to store ssl session");
|
---|
496 | return result;
|
---|
497 | }
|
---|
498 | }
|
---|
499 |
|
---|
500 | connssl->connecting_state = ssl_connect_done;
|
---|
501 |
|
---|
502 | return result;
|
---|
503 | }
|
---|
504 |
|
---|
505 |
|
---|
506 | static ssize_t cyassl_send(struct connectdata *conn,
|
---|
507 | int sockindex,
|
---|
508 | const void *mem,
|
---|
509 | size_t len,
|
---|
510 | CURLcode *curlcode)
|
---|
511 | {
|
---|
512 | char error_buffer[CYASSL_MAX_ERROR_SZ];
|
---|
513 | int memlen = (len > (size_t)INT_MAX) ? INT_MAX : (int)len;
|
---|
514 | int rc = SSL_write(conn->ssl[sockindex].handle, mem, memlen);
|
---|
515 |
|
---|
516 | if(rc < 0) {
|
---|
517 | int err = SSL_get_error(conn->ssl[sockindex].handle, rc);
|
---|
518 |
|
---|
519 | switch(err) {
|
---|
520 | case SSL_ERROR_WANT_READ:
|
---|
521 | case SSL_ERROR_WANT_WRITE:
|
---|
522 | /* there's data pending, re-invoke SSL_write() */
|
---|
523 | *curlcode = CURLE_AGAIN;
|
---|
524 | return -1;
|
---|
525 | default:
|
---|
526 | failf(conn->data, "SSL write: %s, errno %d",
|
---|
527 | ERR_error_string(err, error_buffer),
|
---|
528 | SOCKERRNO);
|
---|
529 | *curlcode = CURLE_SEND_ERROR;
|
---|
530 | return -1;
|
---|
531 | }
|
---|
532 | }
|
---|
533 | return rc;
|
---|
534 | }
|
---|
535 |
|
---|
536 | void Curl_cyassl_close(struct connectdata *conn, int sockindex)
|
---|
537 | {
|
---|
538 | struct ssl_connect_data *conssl = &conn->ssl[sockindex];
|
---|
539 |
|
---|
540 | if(conssl->handle) {
|
---|
541 | (void)SSL_shutdown(conssl->handle);
|
---|
542 | SSL_free (conssl->handle);
|
---|
543 | conssl->handle = NULL;
|
---|
544 | }
|
---|
545 | if(conssl->ctx) {
|
---|
546 | SSL_CTX_free (conssl->ctx);
|
---|
547 | conssl->ctx = NULL;
|
---|
548 | }
|
---|
549 | }
|
---|
550 |
|
---|
551 | static ssize_t cyassl_recv(struct connectdata *conn,
|
---|
552 | int num,
|
---|
553 | char *buf,
|
---|
554 | size_t buffersize,
|
---|
555 | CURLcode *curlcode)
|
---|
556 | {
|
---|
557 | char error_buffer[CYASSL_MAX_ERROR_SZ];
|
---|
558 | int buffsize = (buffersize > (size_t)INT_MAX) ? INT_MAX : (int)buffersize;
|
---|
559 | int nread = SSL_read(conn->ssl[num].handle, buf, buffsize);
|
---|
560 |
|
---|
561 | if(nread < 0) {
|
---|
562 | int err = SSL_get_error(conn->ssl[num].handle, nread);
|
---|
563 |
|
---|
564 | switch(err) {
|
---|
565 | case SSL_ERROR_ZERO_RETURN: /* no more data */
|
---|
566 | break;
|
---|
567 | case SSL_ERROR_WANT_READ:
|
---|
568 | case SSL_ERROR_WANT_WRITE:
|
---|
569 | /* there's data pending, re-invoke SSL_read() */
|
---|
570 | *curlcode = CURLE_AGAIN;
|
---|
571 | return -1;
|
---|
572 | default:
|
---|
573 | failf(conn->data, "SSL read: %s, errno %d",
|
---|
574 | ERR_error_string(err, error_buffer),
|
---|
575 | SOCKERRNO);
|
---|
576 | *curlcode = CURLE_RECV_ERROR;
|
---|
577 | return -1;
|
---|
578 | }
|
---|
579 | }
|
---|
580 | return nread;
|
---|
581 | }
|
---|
582 |
|
---|
583 |
|
---|
584 | void Curl_cyassl_session_free(void *ptr)
|
---|
585 | {
|
---|
586 | (void)ptr;
|
---|
587 | /* CyaSSL reuses sessions on own, no free */
|
---|
588 | }
|
---|
589 |
|
---|
590 |
|
---|
591 | size_t Curl_cyassl_version(char *buffer, size_t size)
|
---|
592 | {
|
---|
593 | #ifdef WOLFSSL_VERSION
|
---|
594 | return snprintf(buffer, size, "wolfSSL/%s", WOLFSSL_VERSION);
|
---|
595 | #elif defined(CYASSL_VERSION)
|
---|
596 | return snprintf(buffer, size, "CyaSSL/%s", CYASSL_VERSION);
|
---|
597 | #else
|
---|
598 | return snprintf(buffer, size, "CyaSSL/%s", "<1.8.8");
|
---|
599 | #endif
|
---|
600 | }
|
---|
601 |
|
---|
602 |
|
---|
603 | int Curl_cyassl_init(void)
|
---|
604 | {
|
---|
605 | return (CyaSSL_Init() == SSL_SUCCESS);
|
---|
606 | }
|
---|
607 |
|
---|
608 |
|
---|
609 | bool Curl_cyassl_data_pending(const struct connectdata* conn, int connindex)
|
---|
610 | {
|
---|
611 | if(conn->ssl[connindex].handle) /* SSL is in use */
|
---|
612 | return (0 != SSL_pending(conn->ssl[connindex].handle)) ? TRUE : FALSE;
|
---|
613 | else
|
---|
614 | return FALSE;
|
---|
615 | }
|
---|
616 |
|
---|
617 |
|
---|
618 | /*
|
---|
619 | * This function is called to shut down the SSL layer but keep the
|
---|
620 | * socket open (CCC - Clear Command Channel)
|
---|
621 | */
|
---|
622 | int Curl_cyassl_shutdown(struct connectdata *conn, int sockindex)
|
---|
623 | {
|
---|
624 | int retval = 0;
|
---|
625 | struct ssl_connect_data *connssl = &conn->ssl[sockindex];
|
---|
626 |
|
---|
627 | if(connssl->handle) {
|
---|
628 | SSL_free (connssl->handle);
|
---|
629 | connssl->handle = NULL;
|
---|
630 | }
|
---|
631 | return retval;
|
---|
632 | }
|
---|
633 |
|
---|
634 |
|
---|
635 | static CURLcode
|
---|
636 | cyassl_connect_common(struct connectdata *conn,
|
---|
637 | int sockindex,
|
---|
638 | bool nonblocking,
|
---|
639 | bool *done)
|
---|
640 | {
|
---|
641 | CURLcode result;
|
---|
642 | struct SessionHandle *data = conn->data;
|
---|
643 | struct ssl_connect_data *connssl = &conn->ssl[sockindex];
|
---|
644 | curl_socket_t sockfd = conn->sock[sockindex];
|
---|
645 | long timeout_ms;
|
---|
646 | int what;
|
---|
647 |
|
---|
648 | /* check if the connection has already been established */
|
---|
649 | if(ssl_connection_complete == connssl->state) {
|
---|
650 | *done = TRUE;
|
---|
651 | return CURLE_OK;
|
---|
652 | }
|
---|
653 |
|
---|
654 | if(ssl_connect_1==connssl->connecting_state) {
|
---|
655 | /* Find out how much more time we're allowed */
|
---|
656 | timeout_ms = Curl_timeleft(data, NULL, TRUE);
|
---|
657 |
|
---|
658 | if(timeout_ms < 0) {
|
---|
659 | /* no need to continue if time already is up */
|
---|
660 | failf(data, "SSL connection timeout");
|
---|
661 | return CURLE_OPERATION_TIMEDOUT;
|
---|
662 | }
|
---|
663 |
|
---|
664 | result = cyassl_connect_step1(conn, sockindex);
|
---|
665 | if(result)
|
---|
666 | return result;
|
---|
667 | }
|
---|
668 |
|
---|
669 | while(ssl_connect_2 == connssl->connecting_state ||
|
---|
670 | ssl_connect_2_reading == connssl->connecting_state ||
|
---|
671 | ssl_connect_2_writing == connssl->connecting_state) {
|
---|
672 |
|
---|
673 | /* check allowed time left */
|
---|
674 | timeout_ms = Curl_timeleft(data, NULL, TRUE);
|
---|
675 |
|
---|
676 | if(timeout_ms < 0) {
|
---|
677 | /* no need to continue if time already is up */
|
---|
678 | failf(data, "SSL connection timeout");
|
---|
679 | return CURLE_OPERATION_TIMEDOUT;
|
---|
680 | }
|
---|
681 |
|
---|
682 | /* if ssl is expecting something, check if it's available. */
|
---|
683 | if(connssl->connecting_state == ssl_connect_2_reading
|
---|
684 | || connssl->connecting_state == ssl_connect_2_writing) {
|
---|
685 |
|
---|
686 | curl_socket_t writefd = ssl_connect_2_writing==
|
---|
687 | connssl->connecting_state?sockfd:CURL_SOCKET_BAD;
|
---|
688 | curl_socket_t readfd = ssl_connect_2_reading==
|
---|
689 | connssl->connecting_state?sockfd:CURL_SOCKET_BAD;
|
---|
690 |
|
---|
691 | what = Curl_socket_ready(readfd, writefd, nonblocking?0:timeout_ms);
|
---|
692 | if(what < 0) {
|
---|
693 | /* fatal error */
|
---|
694 | failf(data, "select/poll on SSL socket, errno: %d", SOCKERRNO);
|
---|
695 | return CURLE_SSL_CONNECT_ERROR;
|
---|
696 | }
|
---|
697 | else if(0 == what) {
|
---|
698 | if(nonblocking) {
|
---|
699 | *done = FALSE;
|
---|
700 | return CURLE_OK;
|
---|
701 | }
|
---|
702 | else {
|
---|
703 | /* timeout */
|
---|
704 | failf(data, "SSL connection timeout");
|
---|
705 | return CURLE_OPERATION_TIMEDOUT;
|
---|
706 | }
|
---|
707 | }
|
---|
708 | /* socket is readable or writable */
|
---|
709 | }
|
---|
710 |
|
---|
711 | /* Run transaction, and return to the caller if it failed or if
|
---|
712 | * this connection is part of a multi handle and this loop would
|
---|
713 | * execute again. This permits the owner of a multi handle to
|
---|
714 | * abort a connection attempt before step2 has completed while
|
---|
715 | * ensuring that a client using select() or epoll() will always
|
---|
716 | * have a valid fdset to wait on.
|
---|
717 | */
|
---|
718 | result = cyassl_connect_step2(conn, sockindex);
|
---|
719 | if(result || (nonblocking &&
|
---|
720 | (ssl_connect_2 == connssl->connecting_state ||
|
---|
721 | ssl_connect_2_reading == connssl->connecting_state ||
|
---|
722 | ssl_connect_2_writing == connssl->connecting_state)))
|
---|
723 | return result;
|
---|
724 | } /* repeat step2 until all transactions are done. */
|
---|
725 |
|
---|
726 | if(ssl_connect_3 == connssl->connecting_state) {
|
---|
727 | result = cyassl_connect_step3(conn, sockindex);
|
---|
728 | if(result)
|
---|
729 | return result;
|
---|
730 | }
|
---|
731 |
|
---|
732 | if(ssl_connect_done == connssl->connecting_state) {
|
---|
733 | connssl->state = ssl_connection_complete;
|
---|
734 | conn->recv[sockindex] = cyassl_recv;
|
---|
735 | conn->send[sockindex] = cyassl_send;
|
---|
736 | *done = TRUE;
|
---|
737 | }
|
---|
738 | else
|
---|
739 | *done = FALSE;
|
---|
740 |
|
---|
741 | /* Reset our connect state machine */
|
---|
742 | connssl->connecting_state = ssl_connect_1;
|
---|
743 |
|
---|
744 | return CURLE_OK;
|
---|
745 | }
|
---|
746 |
|
---|
747 |
|
---|
748 | CURLcode
|
---|
749 | Curl_cyassl_connect_nonblocking(struct connectdata *conn,
|
---|
750 | int sockindex,
|
---|
751 | bool *done)
|
---|
752 | {
|
---|
753 | return cyassl_connect_common(conn, sockindex, TRUE, done);
|
---|
754 | }
|
---|
755 |
|
---|
756 |
|
---|
757 | CURLcode
|
---|
758 | Curl_cyassl_connect(struct connectdata *conn,
|
---|
759 | int sockindex)
|
---|
760 | {
|
---|
761 | CURLcode result;
|
---|
762 | bool done = FALSE;
|
---|
763 |
|
---|
764 | result = cyassl_connect_common(conn, sockindex, FALSE, &done);
|
---|
765 | if(result)
|
---|
766 | return result;
|
---|
767 |
|
---|
768 | DEBUGASSERT(done);
|
---|
769 |
|
---|
770 | return CURLE_OK;
|
---|
771 | }
|
---|
772 |
|
---|
773 | int Curl_cyassl_random(struct SessionHandle *data,
|
---|
774 | unsigned char *entropy,
|
---|
775 | size_t length)
|
---|
776 | {
|
---|
777 | RNG rng;
|
---|
778 | (void)data;
|
---|
779 | if(InitRng(&rng))
|
---|
780 | return 1;
|
---|
781 | if(length > UINT_MAX)
|
---|
782 | return 1;
|
---|
783 | if(RNG_GenerateBlock(&rng, entropy, (unsigned)length))
|
---|
784 | return 1;
|
---|
785 | return 0;
|
---|
786 | }
|
---|
787 |
|
---|
788 | void Curl_cyassl_sha256sum(const unsigned char *tmp, /* input */
|
---|
789 | size_t tmplen,
|
---|
790 | unsigned char *sha256sum /* output */,
|
---|
791 | size_t unused)
|
---|
792 | {
|
---|
793 | Sha256 SHA256pw;
|
---|
794 | (void)unused;
|
---|
795 | InitSha256(&SHA256pw);
|
---|
796 | Sha256Update(&SHA256pw, tmp, (word32)tmplen);
|
---|
797 | Sha256Final(&SHA256pw, sha256sum);
|
---|
798 | }
|
---|
799 |
|
---|
800 | #ifndef OPENSSL_EXTRA
|
---|
801 | #include <wolfssl/wolfcrypt/wc_port.h>
|
---|
802 | #include <wolfssl/ssl.h>
|
---|
803 | #include <wolfssl/openssl/md5.h>
|
---|
804 | #include <wolfssl/wolfcrypt/md5.h>
|
---|
805 |
|
---|
806 | #define WOLFSSL_ENTER(a)
|
---|
807 |
|
---|
808 | void wolfSSL_MD5_Init(WOLFSSL_MD5_CTX* md5)
|
---|
809 | {
|
---|
810 | typedef char md5_test[sizeof(MD5_CTX) >= sizeof(Md5) ? 1 : -1];
|
---|
811 | (void)sizeof(md5_test);
|
---|
812 |
|
---|
813 | WOLFSSL_ENTER("MD5_Init");
|
---|
814 | wc_InitMd5((Md5*)md5);
|
---|
815 | }
|
---|
816 |
|
---|
817 |
|
---|
818 | void wolfSSL_MD5_Update(WOLFSSL_MD5_CTX* md5, const void* input,
|
---|
819 | unsigned long sz)
|
---|
820 | {
|
---|
821 | WOLFSSL_ENTER("wolfSSL_MD5_Update");
|
---|
822 | wc_Md5Update((Md5*)md5, (const byte*)input, (word32)sz);
|
---|
823 | }
|
---|
824 |
|
---|
825 |
|
---|
826 | void wolfSSL_MD5_Final(byte* input, WOLFSSL_MD5_CTX* md5)
|
---|
827 | {
|
---|
828 | WOLFSSL_ENTER("MD5_Final");
|
---|
829 | wc_Md5Final((Md5*)md5, input);
|
---|
830 | }
|
---|
831 | #endif
|
---|
832 |
|
---|
833 | #endif
|
---|