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) 2010 - 2011, Hoi-Ho Chan, <hoiho.chan@gmail.com>
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9 | * Copyright (C) 2012 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al.
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10 | *
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11 | * This software is licensed as described in the file COPYING, which
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12 | * you should have received as part of this distribution. The terms
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13 | * are also available at https://curl.haxx.se/docs/copyright.html.
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14 | *
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15 | * You may opt to use, copy, modify, merge, publish, distribute and/or sell
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16 | * copies of the Software, and permit persons to whom the Software is
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17 | * furnished to do so, under the terms of the COPYING file.
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18 | *
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19 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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20 | * KIND, either express or implied.
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21 | *
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22 | ***************************************************************************/
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23 |
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24 | /*
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25 | * Source file for all mbedTLS-specific code for the TLS/SSL layer. No code
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26 | * but vtls.c should ever call or use these functions.
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27 | *
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28 | */
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29 |
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30 | #include "curl_setup.h"
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31 |
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32 | #ifdef USE_MBEDTLS
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33 |
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34 | #include <mbedtls/version.h>
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35 | #if MBEDTLS_VERSION_NUMBER >= 0x02040000
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36 | #include <mbedtls/net_sockets.h>
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37 | #else
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38 | #include <mbedtls/net.h>
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39 | #endif
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40 | #include <mbedtls/ssl.h>
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41 | #include <mbedtls/certs.h>
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42 | #include <mbedtls/x509.h>
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43 |
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44 | #include <mbedtls/error.h>
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45 | #include <mbedtls/entropy.h>
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46 | #include <mbedtls/ctr_drbg.h>
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47 | #include <mbedtls/sha256.h>
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48 |
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49 | #include "urldata.h"
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50 | #include "sendf.h"
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51 | #include "inet_pton.h"
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52 | #include "mbedtls.h"
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53 | #include "vtls.h"
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54 | #include "parsedate.h"
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55 | #include "connect.h" /* for the connect timeout */
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56 | #include "select.h"
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57 | #include "polarssl_threadlock.h"
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58 |
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59 | /* The last 3 #include files should be in this order */
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60 | #include "curl_printf.h"
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61 | #include "curl_memory.h"
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62 | #include "memdebug.h"
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63 |
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64 | struct ssl_backend_data {
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65 | mbedtls_ctr_drbg_context ctr_drbg;
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66 | mbedtls_entropy_context entropy;
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67 | mbedtls_ssl_context ssl;
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68 | int server_fd;
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69 | mbedtls_x509_crt cacert;
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70 | mbedtls_x509_crt clicert;
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71 | mbedtls_x509_crl crl;
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72 | mbedtls_pk_context pk;
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73 | mbedtls_ssl_config config;
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74 | const char *protocols[3];
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75 | };
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76 |
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77 | #define BACKEND connssl->backend
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78 |
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79 | /* apply threading? */
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80 | #if defined(USE_THREADS_POSIX) || defined(USE_THREADS_WIN32)
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81 | #define THREADING_SUPPORT
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82 | #endif
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83 |
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84 | #if defined(THREADING_SUPPORT)
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85 | static mbedtls_entropy_context ts_entropy;
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86 |
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87 | static int entropy_init_initialized = 0;
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88 |
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89 | /* start of entropy_init_mutex() */
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90 | static void entropy_init_mutex(mbedtls_entropy_context *ctx)
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91 | {
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92 | /* lock 0 = entropy_init_mutex() */
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93 | Curl_polarsslthreadlock_lock_function(0);
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94 | if(entropy_init_initialized == 0) {
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95 | mbedtls_entropy_init(ctx);
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96 | entropy_init_initialized = 1;
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97 | }
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98 | Curl_polarsslthreadlock_unlock_function(0);
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99 | }
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100 | /* end of entropy_init_mutex() */
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101 |
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102 | /* start of entropy_func_mutex() */
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103 | static int entropy_func_mutex(void *data, unsigned char *output, size_t len)
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104 | {
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105 | int ret;
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106 | /* lock 1 = entropy_func_mutex() */
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107 | Curl_polarsslthreadlock_lock_function(1);
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108 | ret = mbedtls_entropy_func(data, output, len);
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109 | Curl_polarsslthreadlock_unlock_function(1);
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110 |
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111 | return ret;
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112 | }
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113 | /* end of entropy_func_mutex() */
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114 |
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115 | #endif /* THREADING_SUPPORT */
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116 |
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117 | /* Define this to enable lots of debugging for mbedTLS */
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118 | #undef MBEDTLS_DEBUG
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119 |
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120 | #ifdef MBEDTLS_DEBUG
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121 | static void mbed_debug(void *context, int level, const char *f_name,
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122 | int line_nb, const char *line)
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123 | {
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124 | struct Curl_easy *data = NULL;
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125 |
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126 | if(!context)
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127 | return;
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128 |
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129 | data = (struct Curl_easy *)context;
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130 |
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131 | infof(data, "%s", line);
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132 | (void) level;
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133 | }
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134 | #else
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135 | #endif
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136 |
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137 | /* ALPN for http2? */
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138 | #ifdef USE_NGHTTP2
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139 | # undef HAS_ALPN
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140 | # ifdef MBEDTLS_SSL_ALPN
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141 | # define HAS_ALPN
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142 | # endif
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143 | #endif
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144 |
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145 |
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146 | /*
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147 | * profile
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148 | */
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149 | static const mbedtls_x509_crt_profile mbedtls_x509_crt_profile_fr =
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150 | {
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151 | /* Hashes from SHA-1 and above */
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152 | MBEDTLS_X509_ID_FLAG(MBEDTLS_MD_SHA1) |
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153 | MBEDTLS_X509_ID_FLAG(MBEDTLS_MD_RIPEMD160) |
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154 | MBEDTLS_X509_ID_FLAG(MBEDTLS_MD_SHA224) |
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155 | MBEDTLS_X509_ID_FLAG(MBEDTLS_MD_SHA256) |
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156 | MBEDTLS_X509_ID_FLAG(MBEDTLS_MD_SHA384) |
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157 | MBEDTLS_X509_ID_FLAG(MBEDTLS_MD_SHA512),
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158 | 0xFFFFFFF, /* Any PK alg */
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159 | 0xFFFFFFF, /* Any curve */
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160 | 1024, /* RSA min key len */
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161 | };
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162 |
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163 | /* See https://tls.mbed.org/discussions/generic/
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164 | howto-determine-exact-buffer-len-for-mbedtls_pk_write_pubkey_der
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165 | */
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166 | #define RSA_PUB_DER_MAX_BYTES (38 + 2 * MBEDTLS_MPI_MAX_SIZE)
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167 | #define ECP_PUB_DER_MAX_BYTES (30 + 2 * MBEDTLS_ECP_MAX_BYTES)
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168 |
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169 | #define PUB_DER_MAX_BYTES (RSA_PUB_DER_MAX_BYTES > ECP_PUB_DER_MAX_BYTES ? \
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170 | RSA_PUB_DER_MAX_BYTES : ECP_PUB_DER_MAX_BYTES)
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171 |
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172 | static Curl_recv mbed_recv;
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173 | static Curl_send mbed_send;
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174 |
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175 | static CURLcode mbedtls_version_from_curl(int *mbedver, long version)
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176 | {
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177 | switch(version) {
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178 | case CURL_SSLVERSION_TLSv1_0:
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179 | *mbedver = MBEDTLS_SSL_MINOR_VERSION_1;
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180 | return CURLE_OK;
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181 | case CURL_SSLVERSION_TLSv1_1:
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182 | *mbedver = MBEDTLS_SSL_MINOR_VERSION_2;
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183 | return CURLE_OK;
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184 | case CURL_SSLVERSION_TLSv1_2:
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185 | *mbedver = MBEDTLS_SSL_MINOR_VERSION_3;
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186 | return CURLE_OK;
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187 | case CURL_SSLVERSION_TLSv1_3:
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188 | break;
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189 | }
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190 | return CURLE_SSL_CONNECT_ERROR;
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191 | }
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192 |
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193 | static CURLcode
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194 | set_ssl_version_min_max(struct connectdata *conn, int sockindex)
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195 | {
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196 | struct Curl_easy *data = conn->data;
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197 | struct ssl_connect_data *connssl = &conn->ssl[sockindex];
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198 | int mbedtls_ver_min = MBEDTLS_SSL_MINOR_VERSION_1;
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199 | int mbedtls_ver_max = MBEDTLS_SSL_MINOR_VERSION_1;
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200 | long ssl_version = SSL_CONN_CONFIG(version);
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201 | long ssl_version_max = SSL_CONN_CONFIG(version_max);
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202 | CURLcode result = CURLE_OK;
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203 |
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204 | switch(ssl_version) {
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205 | case CURL_SSLVERSION_DEFAULT:
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206 | case CURL_SSLVERSION_TLSv1:
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207 | ssl_version = CURL_SSLVERSION_TLSv1_0;
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208 | ssl_version_max = CURL_SSLVERSION_MAX_TLSv1_2;
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209 | break;
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210 | }
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211 |
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212 | switch(ssl_version_max) {
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213 | case CURL_SSLVERSION_MAX_NONE:
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214 | ssl_version_max = ssl_version << 16;
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215 | break;
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216 | case CURL_SSLVERSION_MAX_DEFAULT:
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217 | ssl_version_max = CURL_SSLVERSION_MAX_TLSv1_2;
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218 | break;
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219 | }
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220 |
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221 | result = mbedtls_version_from_curl(&mbedtls_ver_min, ssl_version);
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222 | if(result) {
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223 | failf(data, "unsupported min version passed via CURLOPT_SSLVERSION");
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224 | return result;
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225 | }
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226 | result = mbedtls_version_from_curl(&mbedtls_ver_max, ssl_version_max >> 16);
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227 | if(result) {
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228 | failf(data, "unsupported max version passed via CURLOPT_SSLVERSION");
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229 | return result;
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230 | }
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231 |
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232 | mbedtls_ssl_conf_min_version(&BACKEND->config, MBEDTLS_SSL_MAJOR_VERSION_3,
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233 | mbedtls_ver_min);
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234 | mbedtls_ssl_conf_max_version(&BACKEND->config, MBEDTLS_SSL_MAJOR_VERSION_3,
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235 | mbedtls_ver_max);
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236 |
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237 | return result;
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238 | }
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239 |
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240 | static CURLcode
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241 | mbed_connect_step1(struct connectdata *conn,
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242 | int sockindex)
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243 | {
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244 | struct Curl_easy *data = conn->data;
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245 | struct ssl_connect_data* connssl = &conn->ssl[sockindex];
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246 | const char * const ssl_cafile = SSL_CONN_CONFIG(CAfile);
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247 | const bool verifypeer = SSL_CONN_CONFIG(verifypeer);
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248 | const char * const ssl_capath = SSL_CONN_CONFIG(CApath);
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249 | char * const ssl_cert = SSL_SET_OPTION(cert);
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250 | const char * const ssl_crlfile = SSL_SET_OPTION(CRLfile);
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251 | const char * const hostname = SSL_IS_PROXY() ? conn->http_proxy.host.name :
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252 | conn->host.name;
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253 | const long int port = SSL_IS_PROXY() ? conn->port : conn->remote_port;
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254 | int ret = -1;
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255 | char errorbuf[128];
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256 | errorbuf[0] = 0;
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257 |
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258 | /* mbedTLS only supports SSLv3 and TLSv1 */
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259 | if(SSL_CONN_CONFIG(version) == CURL_SSLVERSION_SSLv2) {
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260 | failf(data, "mbedTLS does not support SSLv2");
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261 | return CURLE_SSL_CONNECT_ERROR;
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262 | }
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263 |
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264 | #ifdef THREADING_SUPPORT
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265 | entropy_init_mutex(&ts_entropy);
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266 | mbedtls_ctr_drbg_init(&BACKEND->ctr_drbg);
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267 |
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268 | ret = mbedtls_ctr_drbg_seed(&BACKEND->ctr_drbg, entropy_func_mutex,
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269 | &ts_entropy, NULL, 0);
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270 | if(ret) {
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271 | #ifdef MBEDTLS_ERROR_C
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272 | mbedtls_strerror(ret, errorbuf, sizeof(errorbuf));
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273 | #endif /* MBEDTLS_ERROR_C */
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274 | failf(data, "Failed - mbedTLS: ctr_drbg_init returned (-0x%04X) %s\n",
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275 | -ret, errorbuf);
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276 | }
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277 | #else
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278 | mbedtls_entropy_init(&BACKEND->entropy);
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279 | mbedtls_ctr_drbg_init(&BACKEND->ctr_drbg);
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280 |
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281 | ret = mbedtls_ctr_drbg_seed(&BACKEND->ctr_drbg, mbedtls_entropy_func,
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282 | &BACKEND->entropy, NULL, 0);
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283 | if(ret) {
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284 | #ifdef MBEDTLS_ERROR_C
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285 | mbedtls_strerror(ret, errorbuf, sizeof(errorbuf));
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286 | #endif /* MBEDTLS_ERROR_C */
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287 | failf(data, "Failed - mbedTLS: ctr_drbg_init returned (-0x%04X) %s\n",
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288 | -ret, errorbuf);
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289 | }
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290 | #endif /* THREADING_SUPPORT */
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291 |
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292 | /* Load the trusted CA */
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293 | mbedtls_x509_crt_init(&BACKEND->cacert);
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294 |
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295 | if(ssl_cafile) {
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296 | ret = mbedtls_x509_crt_parse_file(&BACKEND->cacert, ssl_cafile);
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297 |
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298 | if(ret<0) {
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299 | #ifdef MBEDTLS_ERROR_C
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300 | mbedtls_strerror(ret, errorbuf, sizeof(errorbuf));
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301 | #endif /* MBEDTLS_ERROR_C */
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302 | failf(data, "Error reading ca cert file %s - mbedTLS: (-0x%04X) %s",
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303 | ssl_cafile, -ret, errorbuf);
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304 |
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305 | if(verifypeer)
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306 | return CURLE_SSL_CACERT_BADFILE;
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307 | }
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308 | }
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309 |
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310 | if(ssl_capath) {
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311 | ret = mbedtls_x509_crt_parse_path(&BACKEND->cacert, ssl_capath);
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312 |
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313 | if(ret<0) {
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314 | #ifdef MBEDTLS_ERROR_C
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315 | mbedtls_strerror(ret, errorbuf, sizeof(errorbuf));
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316 | #endif /* MBEDTLS_ERROR_C */
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317 | failf(data, "Error reading ca cert path %s - mbedTLS: (-0x%04X) %s",
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318 | ssl_capath, -ret, errorbuf);
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319 |
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320 | if(verifypeer)
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321 | return CURLE_SSL_CACERT_BADFILE;
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322 | }
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323 | }
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324 |
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325 | /* Load the client certificate */
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326 | mbedtls_x509_crt_init(&BACKEND->clicert);
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327 |
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328 | if(ssl_cert) {
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329 | ret = mbedtls_x509_crt_parse_file(&BACKEND->clicert, ssl_cert);
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330 |
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331 | if(ret) {
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332 | #ifdef MBEDTLS_ERROR_C
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333 | mbedtls_strerror(ret, errorbuf, sizeof(errorbuf));
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334 | #endif /* MBEDTLS_ERROR_C */
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335 | failf(data, "Error reading client cert file %s - mbedTLS: (-0x%04X) %s",
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336 | ssl_cert, -ret, errorbuf);
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337 |
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338 | return CURLE_SSL_CERTPROBLEM;
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339 | }
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340 | }
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341 |
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342 | /* Load the client private key */
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343 | mbedtls_pk_init(&BACKEND->pk);
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344 |
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345 | if(SSL_SET_OPTION(key)) {
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346 | ret = mbedtls_pk_parse_keyfile(&BACKEND->pk, SSL_SET_OPTION(key),
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347 | SSL_SET_OPTION(key_passwd));
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348 | if(ret == 0 && !mbedtls_pk_can_do(&BACKEND->pk, MBEDTLS_PK_RSA))
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349 | ret = MBEDTLS_ERR_PK_TYPE_MISMATCH;
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350 |
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351 | if(ret) {
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352 | #ifdef MBEDTLS_ERROR_C
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353 | mbedtls_strerror(ret, errorbuf, sizeof(errorbuf));
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354 | #endif /* MBEDTLS_ERROR_C */
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355 | failf(data, "Error reading private key %s - mbedTLS: (-0x%04X) %s",
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356 | SSL_SET_OPTION(key), -ret, errorbuf);
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357 |
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358 | return CURLE_SSL_CERTPROBLEM;
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359 | }
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360 | }
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361 |
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362 | /* Load the CRL */
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363 | mbedtls_x509_crl_init(&BACKEND->crl);
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364 |
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365 | if(ssl_crlfile) {
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366 | ret = mbedtls_x509_crl_parse_file(&BACKEND->crl, ssl_crlfile);
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367 |
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368 | if(ret) {
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369 | #ifdef MBEDTLS_ERROR_C
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370 | mbedtls_strerror(ret, errorbuf, sizeof(errorbuf));
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371 | #endif /* MBEDTLS_ERROR_C */
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372 | failf(data, "Error reading CRL file %s - mbedTLS: (-0x%04X) %s",
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373 | ssl_crlfile, -ret, errorbuf);
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374 |
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375 | return CURLE_SSL_CRL_BADFILE;
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376 | }
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377 | }
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378 |
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379 | infof(data, "mbedTLS: Connecting to %s:%d\n", hostname, port);
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380 |
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381 | mbedtls_ssl_config_init(&BACKEND->config);
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382 |
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383 | mbedtls_ssl_init(&BACKEND->ssl);
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384 | if(mbedtls_ssl_setup(&BACKEND->ssl, &BACKEND->config)) {
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385 | failf(data, "mbedTLS: ssl_init failed");
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386 | return CURLE_SSL_CONNECT_ERROR;
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387 | }
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388 | ret = mbedtls_ssl_config_defaults(&BACKEND->config,
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389 | MBEDTLS_SSL_IS_CLIENT,
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390 | MBEDTLS_SSL_TRANSPORT_STREAM,
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391 | MBEDTLS_SSL_PRESET_DEFAULT);
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392 | if(ret) {
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393 | failf(data, "mbedTLS: ssl_config failed");
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394 | return CURLE_SSL_CONNECT_ERROR;
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395 | }
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396 |
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397 | /* new profile with RSA min key len = 1024 ... */
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398 | mbedtls_ssl_conf_cert_profile(&BACKEND->config,
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399 | &mbedtls_x509_crt_profile_fr);
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400 |
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401 | switch(SSL_CONN_CONFIG(version)) {
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402 | case CURL_SSLVERSION_DEFAULT:
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403 | case CURL_SSLVERSION_TLSv1:
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404 | mbedtls_ssl_conf_min_version(&BACKEND->config, MBEDTLS_SSL_MAJOR_VERSION_3,
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405 | MBEDTLS_SSL_MINOR_VERSION_1);
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406 | infof(data, "mbedTLS: Set min SSL version to TLS 1.0\n");
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407 | break;
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408 | case CURL_SSLVERSION_SSLv3:
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409 | mbedtls_ssl_conf_min_version(&BACKEND->config, MBEDTLS_SSL_MAJOR_VERSION_3,
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410 | MBEDTLS_SSL_MINOR_VERSION_0);
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411 | mbedtls_ssl_conf_max_version(&BACKEND->config, MBEDTLS_SSL_MAJOR_VERSION_3,
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412 | MBEDTLS_SSL_MINOR_VERSION_0);
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413 | infof(data, "mbedTLS: Set SSL version to SSLv3\n");
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414 | break;
|
---|
415 | case CURL_SSLVERSION_TLSv1_0:
|
---|
416 | case CURL_SSLVERSION_TLSv1_1:
|
---|
417 | case CURL_SSLVERSION_TLSv1_2:
|
---|
418 | case CURL_SSLVERSION_TLSv1_3:
|
---|
419 | {
|
---|
420 | CURLcode result = set_ssl_version_min_max(conn, sockindex);
|
---|
421 | if(result != CURLE_OK)
|
---|
422 | return result;
|
---|
423 | break;
|
---|
424 | }
|
---|
425 | default:
|
---|
426 | failf(data, "Unrecognized parameter passed via CURLOPT_SSLVERSION");
|
---|
427 | return CURLE_SSL_CONNECT_ERROR;
|
---|
428 | }
|
---|
429 |
|
---|
430 | mbedtls_ssl_conf_authmode(&BACKEND->config, MBEDTLS_SSL_VERIFY_OPTIONAL);
|
---|
431 |
|
---|
432 | mbedtls_ssl_conf_rng(&BACKEND->config, mbedtls_ctr_drbg_random,
|
---|
433 | &BACKEND->ctr_drbg);
|
---|
434 | mbedtls_ssl_set_bio(&BACKEND->ssl, &conn->sock[sockindex],
|
---|
435 | mbedtls_net_send,
|
---|
436 | mbedtls_net_recv,
|
---|
437 | NULL /* rev_timeout() */);
|
---|
438 |
|
---|
439 | mbedtls_ssl_conf_ciphersuites(&BACKEND->config,
|
---|
440 | mbedtls_ssl_list_ciphersuites());
|
---|
441 |
|
---|
442 | #if defined(MBEDTLS_SSL_RENEGOTIATION)
|
---|
443 | mbedtls_ssl_conf_renegotiation(&BACKEND->config,
|
---|
444 | MBEDTLS_SSL_RENEGOTIATION_ENABLED);
|
---|
445 | #endif
|
---|
446 |
|
---|
447 | #if defined(MBEDTLS_SSL_SESSION_TICKETS)
|
---|
448 | mbedtls_ssl_conf_session_tickets(&BACKEND->config,
|
---|
449 | MBEDTLS_SSL_SESSION_TICKETS_DISABLED);
|
---|
450 | #endif
|
---|
451 |
|
---|
452 | /* Check if there's a cached ID we can/should use here! */
|
---|
453 | if(SSL_SET_OPTION(primary.sessionid)) {
|
---|
454 | void *old_session = NULL;
|
---|
455 |
|
---|
456 | Curl_ssl_sessionid_lock(conn);
|
---|
457 | if(!Curl_ssl_getsessionid(conn, &old_session, NULL, sockindex)) {
|
---|
458 | ret = mbedtls_ssl_set_session(&BACKEND->ssl, old_session);
|
---|
459 | if(ret) {
|
---|
460 | Curl_ssl_sessionid_unlock(conn);
|
---|
461 | failf(data, "mbedtls_ssl_set_session returned -0x%x", -ret);
|
---|
462 | return CURLE_SSL_CONNECT_ERROR;
|
---|
463 | }
|
---|
464 | infof(data, "mbedTLS re-using session\n");
|
---|
465 | }
|
---|
466 | Curl_ssl_sessionid_unlock(conn);
|
---|
467 | }
|
---|
468 |
|
---|
469 | mbedtls_ssl_conf_ca_chain(&BACKEND->config,
|
---|
470 | &BACKEND->cacert,
|
---|
471 | &BACKEND->crl);
|
---|
472 |
|
---|
473 | if(SSL_SET_OPTION(key)) {
|
---|
474 | mbedtls_ssl_conf_own_cert(&BACKEND->config,
|
---|
475 | &BACKEND->clicert, &BACKEND->pk);
|
---|
476 | }
|
---|
477 | if(mbedtls_ssl_set_hostname(&BACKEND->ssl, hostname)) {
|
---|
478 | /* mbedtls_ssl_set_hostname() sets the name to use in CN/SAN checks *and*
|
---|
479 | the name to set in the SNI extension. So even if curl connects to a
|
---|
480 | host specified as an IP address, this function must be used. */
|
---|
481 | failf(data, "couldn't set hostname in mbedTLS");
|
---|
482 | return CURLE_SSL_CONNECT_ERROR;
|
---|
483 | }
|
---|
484 |
|
---|
485 | #ifdef HAS_ALPN
|
---|
486 | if(conn->bits.tls_enable_alpn) {
|
---|
487 | const char **p = &BACKEND->protocols[0];
|
---|
488 | #ifdef USE_NGHTTP2
|
---|
489 | if(data->set.httpversion >= CURL_HTTP_VERSION_2)
|
---|
490 | *p++ = NGHTTP2_PROTO_VERSION_ID;
|
---|
491 | #endif
|
---|
492 | *p++ = ALPN_HTTP_1_1;
|
---|
493 | *p = NULL;
|
---|
494 | /* this function doesn't clone the protocols array, which is why we need
|
---|
495 | to keep it around */
|
---|
496 | if(mbedtls_ssl_conf_alpn_protocols(&BACKEND->config,
|
---|
497 | &BACKEND->protocols[0])) {
|
---|
498 | failf(data, "Failed setting ALPN protocols");
|
---|
499 | return CURLE_SSL_CONNECT_ERROR;
|
---|
500 | }
|
---|
501 | for(p = &BACKEND->protocols[0]; *p; ++p)
|
---|
502 | infof(data, "ALPN, offering %s\n", *p);
|
---|
503 | }
|
---|
504 | #endif
|
---|
505 |
|
---|
506 | #ifdef MBEDTLS_DEBUG
|
---|
507 | /* In order to make that work in mbedtls MBEDTLS_DEBUG_C must be defined. */
|
---|
508 | mbedtls_ssl_conf_dbg(&BACKEND->config, mbed_debug, data);
|
---|
509 | /* - 0 No debug
|
---|
510 | * - 1 Error
|
---|
511 | * - 2 State change
|
---|
512 | * - 3 Informational
|
---|
513 | * - 4 Verbose
|
---|
514 | */
|
---|
515 | mbedtls_debug_set_threshold(4);
|
---|
516 | #endif
|
---|
517 |
|
---|
518 | /* give application a chance to interfere with mbedTLS set up. */
|
---|
519 | if(data->set.ssl.fsslctx) {
|
---|
520 | ret = (*data->set.ssl.fsslctx)(data, &BACKEND->config,
|
---|
521 | data->set.ssl.fsslctxp);
|
---|
522 | if(ret) {
|
---|
523 | failf(data, "error signaled by ssl ctx callback");
|
---|
524 | return ret;
|
---|
525 | }
|
---|
526 | }
|
---|
527 |
|
---|
528 | connssl->connecting_state = ssl_connect_2;
|
---|
529 |
|
---|
530 | return CURLE_OK;
|
---|
531 | }
|
---|
532 |
|
---|
533 | static CURLcode
|
---|
534 | mbed_connect_step2(struct connectdata *conn,
|
---|
535 | int sockindex)
|
---|
536 | {
|
---|
537 | int ret;
|
---|
538 | struct Curl_easy *data = conn->data;
|
---|
539 | struct ssl_connect_data* connssl = &conn->ssl[sockindex];
|
---|
540 | const mbedtls_x509_crt *peercert;
|
---|
541 | const char * const pinnedpubkey = SSL_IS_PROXY() ?
|
---|
542 | data->set.str[STRING_SSL_PINNEDPUBLICKEY_PROXY] :
|
---|
543 | data->set.str[STRING_SSL_PINNEDPUBLICKEY_ORIG];
|
---|
544 |
|
---|
545 | #ifdef HAS_ALPN
|
---|
546 | const char *next_protocol;
|
---|
547 | #endif
|
---|
548 |
|
---|
549 | char errorbuf[128];
|
---|
550 | errorbuf[0] = 0;
|
---|
551 |
|
---|
552 | conn->recv[sockindex] = mbed_recv;
|
---|
553 | conn->send[sockindex] = mbed_send;
|
---|
554 |
|
---|
555 | ret = mbedtls_ssl_handshake(&BACKEND->ssl);
|
---|
556 |
|
---|
557 | if(ret == MBEDTLS_ERR_SSL_WANT_READ) {
|
---|
558 | connssl->connecting_state = ssl_connect_2_reading;
|
---|
559 | return CURLE_OK;
|
---|
560 | }
|
---|
561 | else if(ret == MBEDTLS_ERR_SSL_WANT_WRITE) {
|
---|
562 | connssl->connecting_state = ssl_connect_2_writing;
|
---|
563 | return CURLE_OK;
|
---|
564 | }
|
---|
565 | else if(ret) {
|
---|
566 | #ifdef MBEDTLS_ERROR_C
|
---|
567 | mbedtls_strerror(ret, errorbuf, sizeof(errorbuf));
|
---|
568 | #endif /* MBEDTLS_ERROR_C */
|
---|
569 | failf(data, "ssl_handshake returned - mbedTLS: (-0x%04X) %s",
|
---|
570 | -ret, errorbuf);
|
---|
571 | return CURLE_SSL_CONNECT_ERROR;
|
---|
572 | }
|
---|
573 |
|
---|
574 | infof(data, "mbedTLS: Handshake complete, cipher is %s\n",
|
---|
575 | mbedtls_ssl_get_ciphersuite(&BACKEND->ssl)
|
---|
576 | );
|
---|
577 |
|
---|
578 | ret = mbedtls_ssl_get_verify_result(&BACKEND->ssl);
|
---|
579 |
|
---|
580 | if(ret && SSL_CONN_CONFIG(verifypeer)) {
|
---|
581 | if(ret & MBEDTLS_X509_BADCERT_EXPIRED)
|
---|
582 | failf(data, "Cert verify failed: BADCERT_EXPIRED");
|
---|
583 |
|
---|
584 | if(ret & MBEDTLS_X509_BADCERT_REVOKED) {
|
---|
585 | failf(data, "Cert verify failed: BADCERT_REVOKED");
|
---|
586 | return CURLE_SSL_CACERT;
|
---|
587 | }
|
---|
588 |
|
---|
589 | if(ret & MBEDTLS_X509_BADCERT_CN_MISMATCH)
|
---|
590 | failf(data, "Cert verify failed: BADCERT_CN_MISMATCH");
|
---|
591 |
|
---|
592 | if(ret & MBEDTLS_X509_BADCERT_NOT_TRUSTED)
|
---|
593 | failf(data, "Cert verify failed: BADCERT_NOT_TRUSTED");
|
---|
594 |
|
---|
595 | return CURLE_PEER_FAILED_VERIFICATION;
|
---|
596 | }
|
---|
597 |
|
---|
598 | peercert = mbedtls_ssl_get_peer_cert(&BACKEND->ssl);
|
---|
599 |
|
---|
600 | if(peercert && data->set.verbose) {
|
---|
601 | const size_t bufsize = 16384;
|
---|
602 | char *buffer = malloc(bufsize);
|
---|
603 |
|
---|
604 | if(!buffer)
|
---|
605 | return CURLE_OUT_OF_MEMORY;
|
---|
606 |
|
---|
607 | if(mbedtls_x509_crt_info(buffer, bufsize, "* ", peercert) > 0)
|
---|
608 | infof(data, "Dumping cert info:\n%s\n", buffer);
|
---|
609 | else
|
---|
610 | infof(data, "Unable to dump certificate information.\n");
|
---|
611 |
|
---|
612 | free(buffer);
|
---|
613 | }
|
---|
614 |
|
---|
615 | if(pinnedpubkey) {
|
---|
616 | int size;
|
---|
617 | CURLcode result;
|
---|
618 | mbedtls_x509_crt *p;
|
---|
619 | unsigned char pubkey[PUB_DER_MAX_BYTES];
|
---|
620 |
|
---|
621 | if(!peercert || !peercert->raw.p || !peercert->raw.len) {
|
---|
622 | failf(data, "Failed due to missing peer certificate");
|
---|
623 | return CURLE_SSL_PINNEDPUBKEYNOTMATCH;
|
---|
624 | }
|
---|
625 |
|
---|
626 | p = calloc(1, sizeof(*p));
|
---|
627 |
|
---|
628 | if(!p)
|
---|
629 | return CURLE_OUT_OF_MEMORY;
|
---|
630 |
|
---|
631 | mbedtls_x509_crt_init(p);
|
---|
632 |
|
---|
633 | /* Make a copy of our const peercert because mbedtls_pk_write_pubkey_der
|
---|
634 | needs a non-const key, for now.
|
---|
635 | https://github.com/ARMmbed/mbedtls/issues/396 */
|
---|
636 | if(mbedtls_x509_crt_parse_der(p, peercert->raw.p, peercert->raw.len)) {
|
---|
637 | failf(data, "Failed copying peer certificate");
|
---|
638 | mbedtls_x509_crt_free(p);
|
---|
639 | free(p);
|
---|
640 | return CURLE_SSL_PINNEDPUBKEYNOTMATCH;
|
---|
641 | }
|
---|
642 |
|
---|
643 | size = mbedtls_pk_write_pubkey_der(&p->pk, pubkey, PUB_DER_MAX_BYTES);
|
---|
644 |
|
---|
645 | if(size <= 0) {
|
---|
646 | failf(data, "Failed copying public key from peer certificate");
|
---|
647 | mbedtls_x509_crt_free(p);
|
---|
648 | free(p);
|
---|
649 | return CURLE_SSL_PINNEDPUBKEYNOTMATCH;
|
---|
650 | }
|
---|
651 |
|
---|
652 | /* mbedtls_pk_write_pubkey_der writes data at the end of the buffer. */
|
---|
653 | result = Curl_pin_peer_pubkey(data,
|
---|
654 | pinnedpubkey,
|
---|
655 | &pubkey[PUB_DER_MAX_BYTES - size], size);
|
---|
656 | if(result) {
|
---|
657 | mbedtls_x509_crt_free(p);
|
---|
658 | free(p);
|
---|
659 | return result;
|
---|
660 | }
|
---|
661 |
|
---|
662 | mbedtls_x509_crt_free(p);
|
---|
663 | free(p);
|
---|
664 | }
|
---|
665 |
|
---|
666 | #ifdef HAS_ALPN
|
---|
667 | if(conn->bits.tls_enable_alpn) {
|
---|
668 | next_protocol = mbedtls_ssl_get_alpn_protocol(&BACKEND->ssl);
|
---|
669 |
|
---|
670 | if(next_protocol) {
|
---|
671 | infof(data, "ALPN, server accepted to use %s\n", next_protocol);
|
---|
672 | #ifdef USE_NGHTTP2
|
---|
673 | if(!strncmp(next_protocol, NGHTTP2_PROTO_VERSION_ID,
|
---|
674 | NGHTTP2_PROTO_VERSION_ID_LEN) &&
|
---|
675 | !next_protocol[NGHTTP2_PROTO_VERSION_ID_LEN]) {
|
---|
676 | conn->negnpn = CURL_HTTP_VERSION_2;
|
---|
677 | }
|
---|
678 | else
|
---|
679 | #endif
|
---|
680 | if(!strncmp(next_protocol, ALPN_HTTP_1_1, ALPN_HTTP_1_1_LENGTH) &&
|
---|
681 | !next_protocol[ALPN_HTTP_1_1_LENGTH]) {
|
---|
682 | conn->negnpn = CURL_HTTP_VERSION_1_1;
|
---|
683 | }
|
---|
684 | }
|
---|
685 | else {
|
---|
686 | infof(data, "ALPN, server did not agree to a protocol\n");
|
---|
687 | }
|
---|
688 | }
|
---|
689 | #endif
|
---|
690 |
|
---|
691 | connssl->connecting_state = ssl_connect_3;
|
---|
692 | infof(data, "SSL connected\n");
|
---|
693 |
|
---|
694 | return CURLE_OK;
|
---|
695 | }
|
---|
696 |
|
---|
697 | static CURLcode
|
---|
698 | mbed_connect_step3(struct connectdata *conn,
|
---|
699 | int sockindex)
|
---|
700 | {
|
---|
701 | CURLcode retcode = CURLE_OK;
|
---|
702 | struct ssl_connect_data *connssl = &conn->ssl[sockindex];
|
---|
703 | struct Curl_easy *data = conn->data;
|
---|
704 |
|
---|
705 | DEBUGASSERT(ssl_connect_3 == connssl->connecting_state);
|
---|
706 |
|
---|
707 | if(SSL_SET_OPTION(primary.sessionid)) {
|
---|
708 | int ret;
|
---|
709 | mbedtls_ssl_session *our_ssl_sessionid;
|
---|
710 | void *old_ssl_sessionid = NULL;
|
---|
711 |
|
---|
712 | our_ssl_sessionid = malloc(sizeof(mbedtls_ssl_session));
|
---|
713 | if(!our_ssl_sessionid)
|
---|
714 | return CURLE_OUT_OF_MEMORY;
|
---|
715 |
|
---|
716 | mbedtls_ssl_session_init(our_ssl_sessionid);
|
---|
717 |
|
---|
718 | ret = mbedtls_ssl_get_session(&BACKEND->ssl, our_ssl_sessionid);
|
---|
719 | if(ret) {
|
---|
720 | free(our_ssl_sessionid);
|
---|
721 | failf(data, "mbedtls_ssl_get_session returned -0x%x", -ret);
|
---|
722 | return CURLE_SSL_CONNECT_ERROR;
|
---|
723 | }
|
---|
724 |
|
---|
725 | /* If there's already a matching session in the cache, delete it */
|
---|
726 | Curl_ssl_sessionid_lock(conn);
|
---|
727 | if(!Curl_ssl_getsessionid(conn, &old_ssl_sessionid, NULL, sockindex))
|
---|
728 | Curl_ssl_delsessionid(conn, old_ssl_sessionid);
|
---|
729 |
|
---|
730 | retcode = Curl_ssl_addsessionid(conn, our_ssl_sessionid, 0, sockindex);
|
---|
731 | Curl_ssl_sessionid_unlock(conn);
|
---|
732 | if(retcode) {
|
---|
733 | free(our_ssl_sessionid);
|
---|
734 | failf(data, "failed to store ssl session");
|
---|
735 | return retcode;
|
---|
736 | }
|
---|
737 | }
|
---|
738 |
|
---|
739 | connssl->connecting_state = ssl_connect_done;
|
---|
740 |
|
---|
741 | return CURLE_OK;
|
---|
742 | }
|
---|
743 |
|
---|
744 | static ssize_t mbed_send(struct connectdata *conn, int sockindex,
|
---|
745 | const void *mem, size_t len,
|
---|
746 | CURLcode *curlcode)
|
---|
747 | {
|
---|
748 | struct ssl_connect_data *connssl = &conn->ssl[sockindex];
|
---|
749 | int ret = -1;
|
---|
750 |
|
---|
751 | ret = mbedtls_ssl_write(&BACKEND->ssl,
|
---|
752 | (unsigned char *)mem, len);
|
---|
753 |
|
---|
754 | if(ret < 0) {
|
---|
755 | *curlcode = (ret == MBEDTLS_ERR_SSL_WANT_WRITE) ?
|
---|
756 | CURLE_AGAIN : CURLE_SEND_ERROR;
|
---|
757 | ret = -1;
|
---|
758 | }
|
---|
759 |
|
---|
760 | return ret;
|
---|
761 | }
|
---|
762 |
|
---|
763 | static void Curl_mbedtls_close_all(struct Curl_easy *data)
|
---|
764 | {
|
---|
765 | (void)data;
|
---|
766 | }
|
---|
767 |
|
---|
768 | static void Curl_mbedtls_close(struct connectdata *conn, int sockindex)
|
---|
769 | {
|
---|
770 | struct ssl_connect_data *connssl = &conn->ssl[sockindex];
|
---|
771 | mbedtls_pk_free(&BACKEND->pk);
|
---|
772 | mbedtls_x509_crt_free(&BACKEND->clicert);
|
---|
773 | mbedtls_x509_crt_free(&BACKEND->cacert);
|
---|
774 | mbedtls_x509_crl_free(&BACKEND->crl);
|
---|
775 | mbedtls_ssl_config_free(&BACKEND->config);
|
---|
776 | mbedtls_ssl_free(&BACKEND->ssl);
|
---|
777 | mbedtls_ctr_drbg_free(&BACKEND->ctr_drbg);
|
---|
778 | #ifndef THREADING_SUPPORT
|
---|
779 | mbedtls_entropy_free(&BACKEND->entropy);
|
---|
780 | #endif /* THREADING_SUPPORT */
|
---|
781 | }
|
---|
782 |
|
---|
783 | static ssize_t mbed_recv(struct connectdata *conn, int num,
|
---|
784 | char *buf, size_t buffersize,
|
---|
785 | CURLcode *curlcode)
|
---|
786 | {
|
---|
787 | struct ssl_connect_data *connssl = &conn->ssl[num];
|
---|
788 | int ret = -1;
|
---|
789 | ssize_t len = -1;
|
---|
790 |
|
---|
791 | memset(buf, 0, buffersize);
|
---|
792 | ret = mbedtls_ssl_read(&BACKEND->ssl, (unsigned char *)buf,
|
---|
793 | buffersize);
|
---|
794 |
|
---|
795 | if(ret <= 0) {
|
---|
796 | if(ret == MBEDTLS_ERR_SSL_PEER_CLOSE_NOTIFY)
|
---|
797 | return 0;
|
---|
798 |
|
---|
799 | *curlcode = (ret == MBEDTLS_ERR_SSL_WANT_READ) ?
|
---|
800 | CURLE_AGAIN : CURLE_RECV_ERROR;
|
---|
801 | return -1;
|
---|
802 | }
|
---|
803 |
|
---|
804 | len = ret;
|
---|
805 |
|
---|
806 | return len;
|
---|
807 | }
|
---|
808 |
|
---|
809 | static void Curl_mbedtls_session_free(void *ptr)
|
---|
810 | {
|
---|
811 | mbedtls_ssl_session_free(ptr);
|
---|
812 | free(ptr);
|
---|
813 | }
|
---|
814 |
|
---|
815 | static size_t Curl_mbedtls_version(char *buffer, size_t size)
|
---|
816 | {
|
---|
817 | unsigned int version = mbedtls_version_get_number();
|
---|
818 | return snprintf(buffer, size, "mbedTLS/%d.%d.%d", version>>24,
|
---|
819 | (version>>16)&0xff, (version>>8)&0xff);
|
---|
820 | }
|
---|
821 |
|
---|
822 | static CURLcode Curl_mbedtls_random(struct Curl_easy *data,
|
---|
823 | unsigned char *entropy, size_t length)
|
---|
824 | {
|
---|
825 | #if defined(MBEDTLS_CTR_DRBG_C)
|
---|
826 | int ret = -1;
|
---|
827 | char errorbuf[128];
|
---|
828 | mbedtls_entropy_context ctr_entropy;
|
---|
829 | mbedtls_ctr_drbg_context ctr_drbg;
|
---|
830 | mbedtls_entropy_init(&ctr_entropy);
|
---|
831 | mbedtls_ctr_drbg_init(&ctr_drbg);
|
---|
832 | errorbuf[0] = 0;
|
---|
833 |
|
---|
834 | ret = mbedtls_ctr_drbg_seed(&ctr_drbg, mbedtls_entropy_func,
|
---|
835 | &ctr_entropy, NULL, 0);
|
---|
836 |
|
---|
837 | if(ret) {
|
---|
838 | #ifdef MBEDTLS_ERROR_C
|
---|
839 | mbedtls_strerror(ret, errorbuf, sizeof(errorbuf));
|
---|
840 | #endif /* MBEDTLS_ERROR_C */
|
---|
841 | failf(data, "Failed - mbedTLS: ctr_drbg_seed returned (-0x%04X) %s\n",
|
---|
842 | -ret, errorbuf);
|
---|
843 | }
|
---|
844 | else {
|
---|
845 | ret = mbedtls_ctr_drbg_random(&ctr_drbg, entropy, length);
|
---|
846 |
|
---|
847 | if(ret) {
|
---|
848 | #ifdef MBEDTLS_ERROR_C
|
---|
849 | mbedtls_strerror(ret, errorbuf, sizeof(errorbuf));
|
---|
850 | #endif /* MBEDTLS_ERROR_C */
|
---|
851 | failf(data, "mbedTLS: ctr_drbg_init returned (-0x%04X) %s\n",
|
---|
852 | -ret, errorbuf);
|
---|
853 | }
|
---|
854 | }
|
---|
855 |
|
---|
856 | mbedtls_ctr_drbg_free(&ctr_drbg);
|
---|
857 | mbedtls_entropy_free(&ctr_entropy);
|
---|
858 |
|
---|
859 | return ret == 0 ? CURLE_OK : CURLE_FAILED_INIT;
|
---|
860 | #elif defined(MBEDTLS_HAVEGE_C)
|
---|
861 | mbedtls_havege_state hs;
|
---|
862 | mbedtls_havege_init(&hs);
|
---|
863 | mbedtls_havege_random(&hs, entropy, length);
|
---|
864 | mbedtls_havege_free(&hs);
|
---|
865 | return CURLE_OK;
|
---|
866 | #else
|
---|
867 | return CURLE_NOT_BUILT_IN;
|
---|
868 | #endif
|
---|
869 | }
|
---|
870 |
|
---|
871 | static CURLcode
|
---|
872 | mbed_connect_common(struct connectdata *conn,
|
---|
873 | int sockindex,
|
---|
874 | bool nonblocking,
|
---|
875 | bool *done)
|
---|
876 | {
|
---|
877 | CURLcode retcode;
|
---|
878 | struct Curl_easy *data = conn->data;
|
---|
879 | struct ssl_connect_data *connssl = &conn->ssl[sockindex];
|
---|
880 | curl_socket_t sockfd = conn->sock[sockindex];
|
---|
881 | long timeout_ms;
|
---|
882 | int what;
|
---|
883 |
|
---|
884 | /* check if the connection has already been established */
|
---|
885 | if(ssl_connection_complete == connssl->state) {
|
---|
886 | *done = TRUE;
|
---|
887 | return CURLE_OK;
|
---|
888 | }
|
---|
889 |
|
---|
890 | if(ssl_connect_1 == connssl->connecting_state) {
|
---|
891 | /* Find out how much more time we're allowed */
|
---|
892 | timeout_ms = Curl_timeleft(data, NULL, TRUE);
|
---|
893 |
|
---|
894 | if(timeout_ms < 0) {
|
---|
895 | /* no need to continue if time already is up */
|
---|
896 | failf(data, "SSL connection timeout");
|
---|
897 | return CURLE_OPERATION_TIMEDOUT;
|
---|
898 | }
|
---|
899 | retcode = mbed_connect_step1(conn, sockindex);
|
---|
900 | if(retcode)
|
---|
901 | return retcode;
|
---|
902 | }
|
---|
903 |
|
---|
904 | while(ssl_connect_2 == connssl->connecting_state ||
|
---|
905 | ssl_connect_2_reading == connssl->connecting_state ||
|
---|
906 | ssl_connect_2_writing == connssl->connecting_state) {
|
---|
907 |
|
---|
908 | /* check allowed time left */
|
---|
909 | timeout_ms = Curl_timeleft(data, NULL, TRUE);
|
---|
910 |
|
---|
911 | if(timeout_ms < 0) {
|
---|
912 | /* no need to continue if time already is up */
|
---|
913 | failf(data, "SSL connection timeout");
|
---|
914 | return CURLE_OPERATION_TIMEDOUT;
|
---|
915 | }
|
---|
916 |
|
---|
917 | /* if ssl is expecting something, check if it's available. */
|
---|
918 | if(connssl->connecting_state == ssl_connect_2_reading
|
---|
919 | || connssl->connecting_state == ssl_connect_2_writing) {
|
---|
920 |
|
---|
921 | curl_socket_t writefd = ssl_connect_2_writing ==
|
---|
922 | connssl->connecting_state?sockfd:CURL_SOCKET_BAD;
|
---|
923 | curl_socket_t readfd = ssl_connect_2_reading ==
|
---|
924 | connssl->connecting_state?sockfd:CURL_SOCKET_BAD;
|
---|
925 |
|
---|
926 | what = Curl_socket_check(readfd, CURL_SOCKET_BAD, writefd,
|
---|
927 | nonblocking ? 0 : timeout_ms);
|
---|
928 | if(what < 0) {
|
---|
929 | /* fatal error */
|
---|
930 | failf(data, "select/poll on SSL socket, errno: %d", SOCKERRNO);
|
---|
931 | return CURLE_SSL_CONNECT_ERROR;
|
---|
932 | }
|
---|
933 | else if(0 == what) {
|
---|
934 | if(nonblocking) {
|
---|
935 | *done = FALSE;
|
---|
936 | return CURLE_OK;
|
---|
937 | }
|
---|
938 | else {
|
---|
939 | /* timeout */
|
---|
940 | failf(data, "SSL connection timeout");
|
---|
941 | return CURLE_OPERATION_TIMEDOUT;
|
---|
942 | }
|
---|
943 | }
|
---|
944 | /* socket is readable or writable */
|
---|
945 | }
|
---|
946 |
|
---|
947 | /* Run transaction, and return to the caller if it failed or if
|
---|
948 | * this connection is part of a multi handle and this loop would
|
---|
949 | * execute again. This permits the owner of a multi handle to
|
---|
950 | * abort a connection attempt before step2 has completed while
|
---|
951 | * ensuring that a client using select() or epoll() will always
|
---|
952 | * have a valid fdset to wait on.
|
---|
953 | */
|
---|
954 | retcode = mbed_connect_step2(conn, sockindex);
|
---|
955 | if(retcode || (nonblocking &&
|
---|
956 | (ssl_connect_2 == connssl->connecting_state ||
|
---|
957 | ssl_connect_2_reading == connssl->connecting_state ||
|
---|
958 | ssl_connect_2_writing == connssl->connecting_state)))
|
---|
959 | return retcode;
|
---|
960 |
|
---|
961 | } /* repeat step2 until all transactions are done. */
|
---|
962 |
|
---|
963 | if(ssl_connect_3 == connssl->connecting_state) {
|
---|
964 | retcode = mbed_connect_step3(conn, sockindex);
|
---|
965 | if(retcode)
|
---|
966 | return retcode;
|
---|
967 | }
|
---|
968 |
|
---|
969 | if(ssl_connect_done == connssl->connecting_state) {
|
---|
970 | connssl->state = ssl_connection_complete;
|
---|
971 | conn->recv[sockindex] = mbed_recv;
|
---|
972 | conn->send[sockindex] = mbed_send;
|
---|
973 | *done = TRUE;
|
---|
974 | }
|
---|
975 | else
|
---|
976 | *done = FALSE;
|
---|
977 |
|
---|
978 | /* Reset our connect state machine */
|
---|
979 | connssl->connecting_state = ssl_connect_1;
|
---|
980 |
|
---|
981 | return CURLE_OK;
|
---|
982 | }
|
---|
983 |
|
---|
984 | static CURLcode Curl_mbedtls_connect_nonblocking(struct connectdata *conn,
|
---|
985 | int sockindex, bool *done)
|
---|
986 | {
|
---|
987 | return mbed_connect_common(conn, sockindex, TRUE, done);
|
---|
988 | }
|
---|
989 |
|
---|
990 |
|
---|
991 | static CURLcode Curl_mbedtls_connect(struct connectdata *conn, int sockindex)
|
---|
992 | {
|
---|
993 | CURLcode retcode;
|
---|
994 | bool done = FALSE;
|
---|
995 |
|
---|
996 | retcode = mbed_connect_common(conn, sockindex, FALSE, &done);
|
---|
997 | if(retcode)
|
---|
998 | return retcode;
|
---|
999 |
|
---|
1000 | DEBUGASSERT(done);
|
---|
1001 |
|
---|
1002 | return CURLE_OK;
|
---|
1003 | }
|
---|
1004 |
|
---|
1005 | /*
|
---|
1006 | * return 0 error initializing SSL
|
---|
1007 | * return 1 SSL initialized successfully
|
---|
1008 | */
|
---|
1009 | static int Curl_mbedtls_init(void)
|
---|
1010 | {
|
---|
1011 | return Curl_polarsslthreadlock_thread_setup();
|
---|
1012 | }
|
---|
1013 |
|
---|
1014 | static void Curl_mbedtls_cleanup(void)
|
---|
1015 | {
|
---|
1016 | (void)Curl_polarsslthreadlock_thread_cleanup();
|
---|
1017 | }
|
---|
1018 |
|
---|
1019 | static bool Curl_mbedtls_data_pending(const struct connectdata *conn,
|
---|
1020 | int sockindex)
|
---|
1021 | {
|
---|
1022 | const struct ssl_connect_data *connssl = &conn->ssl[sockindex];
|
---|
1023 | return mbedtls_ssl_get_bytes_avail(&BACKEND->ssl) != 0;
|
---|
1024 | }
|
---|
1025 |
|
---|
1026 | static void Curl_mbedtls_sha256sum(const unsigned char *input,
|
---|
1027 | size_t inputlen,
|
---|
1028 | unsigned char *sha256sum,
|
---|
1029 | size_t sha256len UNUSED_PARAM)
|
---|
1030 | {
|
---|
1031 | (void)sha256len;
|
---|
1032 | mbedtls_sha256(input, inputlen, sha256sum, 0);
|
---|
1033 | }
|
---|
1034 |
|
---|
1035 | static void *Curl_mbedtls_get_internals(struct ssl_connect_data *connssl,
|
---|
1036 | CURLINFO info UNUSED_PARAM)
|
---|
1037 | {
|
---|
1038 | (void)info;
|
---|
1039 | return &BACKEND->ssl;
|
---|
1040 | }
|
---|
1041 |
|
---|
1042 | const struct Curl_ssl Curl_ssl_mbedtls = {
|
---|
1043 | { CURLSSLBACKEND_MBEDTLS, "mbedtls" }, /* info */
|
---|
1044 |
|
---|
1045 | 1, /* have_ca_path */
|
---|
1046 | 0, /* have_certinfo */
|
---|
1047 | 1, /* have_pinnedpubkey */
|
---|
1048 | 1, /* have_ssl_ctx */
|
---|
1049 | 0, /* support_https_proxy */
|
---|
1050 |
|
---|
1051 | sizeof(struct ssl_backend_data),
|
---|
1052 |
|
---|
1053 | Curl_mbedtls_init, /* init */
|
---|
1054 | Curl_mbedtls_cleanup, /* cleanup */
|
---|
1055 | Curl_mbedtls_version, /* version */
|
---|
1056 | Curl_none_check_cxn, /* check_cxn */
|
---|
1057 | Curl_none_shutdown, /* shutdown */
|
---|
1058 | Curl_mbedtls_data_pending, /* data_pending */
|
---|
1059 | Curl_mbedtls_random, /* random */
|
---|
1060 | Curl_none_cert_status_request, /* cert_status_request */
|
---|
1061 | Curl_mbedtls_connect, /* connect */
|
---|
1062 | Curl_mbedtls_connect_nonblocking, /* connect_nonblocking */
|
---|
1063 | Curl_mbedtls_get_internals, /* get_internals */
|
---|
1064 | Curl_mbedtls_close, /* close_one */
|
---|
1065 | Curl_mbedtls_close_all, /* close_all */
|
---|
1066 | Curl_mbedtls_session_free, /* session_free */
|
---|
1067 | Curl_none_set_engine, /* set_engine */
|
---|
1068 | Curl_none_set_engine_default, /* set_engine_default */
|
---|
1069 | Curl_none_engines_list, /* engines_list */
|
---|
1070 | Curl_none_false_start, /* false_start */
|
---|
1071 | Curl_none_md5sum, /* md5sum */
|
---|
1072 | Curl_mbedtls_sha256sum /* sha256sum */
|
---|
1073 | };
|
---|
1074 |
|
---|
1075 | #endif /* USE_MBEDTLS */
|
---|