[337] | 1 | /***************************************************************************
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| 2 | * _ _ ____ _
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| 3 | * Project ___| | | | _ \| |
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| 4 | * / __| | | | |_) | |
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| 5 | * | (__| |_| | _ <| |___
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| 6 | * \___|\___/|_| \_\_____|
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| 7 | *
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| 8 | * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al.
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| 9 | *
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| 10 | * This software is licensed as described in the file COPYING, which
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| 11 | * you should have received as part of this distribution. The terms
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| 12 | * are also available at https://curl.haxx.se/docs/copyright.html.
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| 13 | *
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| 14 | * You may opt to use, copy, modify, merge, publish, distribute and/or sell
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| 15 | * copies of the Software, and permit persons to whom the Software is
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| 16 | * furnished to do so, under the terms of the COPYING file.
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| 17 | *
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| 18 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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| 19 | * KIND, either express or implied.
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| 20 | *
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| 21 | ***************************************************************************/
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| 22 |
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| 23 | /* This file is for implementing all "generic" SSL functions that all libcurl
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| 24 | internals should use. It is then responsible for calling the proper
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| 25 | "backend" function.
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| 26 |
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| 27 | SSL-functions in libcurl should call functions in this source file, and not
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| 28 | to any specific SSL-layer.
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| 29 |
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| 30 | Curl_ssl_ - prefix for generic ones
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| 31 |
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| 32 | Note that this source code uses the functions of the configured SSL
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| 33 | backend via the global Curl_ssl instance.
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| 34 |
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| 35 | "SSL/TLS Strong Encryption: An Introduction"
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| 36 | https://httpd.apache.org/docs/2.0/ssl/ssl_intro.html
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| 37 | */
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| 38 |
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| 39 | #include "curl_setup.h"
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| 40 |
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| 41 | #ifdef HAVE_SYS_TYPES_H
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| 42 | #include <sys/types.h>
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| 43 | #endif
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| 44 | #ifdef HAVE_SYS_STAT_H
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| 45 | #include <sys/stat.h>
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| 46 | #endif
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| 47 | #ifdef HAVE_FCNTL_H
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| 48 | #include <fcntl.h>
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| 49 | #endif
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| 50 |
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| 51 | #include "urldata.h"
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| 52 |
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| 53 | #include "vtls.h" /* generic SSL protos etc */
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| 54 | #include "slist.h"
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| 55 | #include "sendf.h"
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| 56 | #include "strcase.h"
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| 57 | #include "url.h"
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| 58 | #include "progress.h"
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| 59 | #include "share.h"
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| 60 | #include "multiif.h"
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| 61 | #include "timeval.h"
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| 62 | #include "curl_md5.h"
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| 63 | #include "warnless.h"
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| 64 | #include "curl_base64.h"
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| 65 | #include "curl_printf.h"
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| 66 |
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| 67 | /* The last #include files should be: */
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| 68 | #include "curl_memory.h"
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| 69 | #include "memdebug.h"
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| 70 |
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| 71 | /* convenience macro to check if this handle is using a shared SSL session */
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| 72 | #define SSLSESSION_SHARED(data) (data->share && \
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| 73 | (data->share->specifier & \
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| 74 | (1<<CURL_LOCK_DATA_SSL_SESSION)))
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| 75 |
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| 76 | #define CLONE_STRING(var) \
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| 77 | if(source->var) { \
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| 78 | dest->var = strdup(source->var); \
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| 79 | if(!dest->var) \
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| 80 | return FALSE; \
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| 81 | } \
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| 82 | else \
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| 83 | dest->var = NULL;
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| 84 |
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| 85 | bool
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| 86 | Curl_ssl_config_matches(struct ssl_primary_config* data,
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| 87 | struct ssl_primary_config* needle)
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| 88 | {
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| 89 | if((data->version == needle->version) &&
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| 90 | (data->version_max == needle->version_max) &&
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| 91 | (data->verifypeer == needle->verifypeer) &&
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| 92 | (data->verifyhost == needle->verifyhost) &&
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| 93 | (data->verifystatus == needle->verifystatus) &&
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| 94 | Curl_safe_strcasecompare(data->CApath, needle->CApath) &&
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| 95 | Curl_safe_strcasecompare(data->CAfile, needle->CAfile) &&
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| 96 | Curl_safe_strcasecompare(data->clientcert, needle->clientcert) &&
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| 97 | Curl_safe_strcasecompare(data->random_file, needle->random_file) &&
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| 98 | Curl_safe_strcasecompare(data->egdsocket, needle->egdsocket) &&
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| 99 | Curl_safe_strcasecompare(data->cipher_list, needle->cipher_list))
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| 100 | return TRUE;
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| 101 |
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| 102 | return FALSE;
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| 103 | }
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| 104 |
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| 105 | bool
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| 106 | Curl_clone_primary_ssl_config(struct ssl_primary_config *source,
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| 107 | struct ssl_primary_config *dest)
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| 108 | {
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| 109 | dest->version = source->version;
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| 110 | dest->version_max = source->version_max;
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| 111 | dest->verifypeer = source->verifypeer;
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| 112 | dest->verifyhost = source->verifyhost;
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| 113 | dest->verifystatus = source->verifystatus;
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| 114 | dest->sessionid = source->sessionid;
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| 115 |
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| 116 | CLONE_STRING(CApath);
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| 117 | CLONE_STRING(CAfile);
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| 118 | CLONE_STRING(clientcert);
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| 119 | CLONE_STRING(random_file);
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| 120 | CLONE_STRING(egdsocket);
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| 121 | CLONE_STRING(cipher_list);
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| 122 |
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| 123 | return TRUE;
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| 124 | }
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| 125 |
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| 126 | void Curl_free_primary_ssl_config(struct ssl_primary_config* sslc)
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| 127 | {
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| 128 | Curl_safefree(sslc->CApath);
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| 129 | Curl_safefree(sslc->CAfile);
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| 130 | Curl_safefree(sslc->clientcert);
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| 131 | Curl_safefree(sslc->random_file);
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| 132 | Curl_safefree(sslc->egdsocket);
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| 133 | Curl_safefree(sslc->cipher_list);
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| 134 | }
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| 135 |
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| 136 | #ifdef USE_SSL
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| 137 | static int multissl_init(const struct Curl_ssl *backend);
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| 138 | #endif
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| 139 |
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| 140 | int Curl_ssl_backend(void)
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| 141 | {
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| 142 | #ifdef USE_SSL
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| 143 | multissl_init(NULL);
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| 144 | return Curl_ssl->info.id;
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| 145 | #else
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| 146 | return (int)CURLSSLBACKEND_NONE;
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| 147 | #endif
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| 148 | }
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| 149 |
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| 150 | #ifdef USE_SSL
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| 151 |
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| 152 | /* "global" init done? */
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| 153 | static bool init_ssl = FALSE;
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| 154 |
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| 155 | /**
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| 156 | * Global SSL init
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| 157 | *
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| 158 | * @retval 0 error initializing SSL
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| 159 | * @retval 1 SSL initialized successfully
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| 160 | */
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| 161 | int Curl_ssl_init(void)
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| 162 | {
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| 163 | /* make sure this is only done once */
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| 164 | if(init_ssl)
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| 165 | return 1;
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| 166 | init_ssl = TRUE; /* never again */
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| 167 |
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| 168 | return Curl_ssl->init();
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| 169 | }
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| 170 |
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| 171 |
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| 172 | /* Global cleanup */
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| 173 | void Curl_ssl_cleanup(void)
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| 174 | {
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| 175 | if(init_ssl) {
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| 176 | /* only cleanup if we did a previous init */
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| 177 | Curl_ssl->cleanup();
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| 178 | init_ssl = FALSE;
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| 179 | }
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| 180 | }
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| 181 |
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| 182 | static bool ssl_prefs_check(struct Curl_easy *data)
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| 183 | {
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| 184 | /* check for CURLOPT_SSLVERSION invalid parameter value */
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| 185 | const long sslver = data->set.ssl.primary.version;
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| 186 | if((sslver < 0) || (sslver >= CURL_SSLVERSION_LAST)) {
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| 187 | failf(data, "Unrecognized parameter value passed via CURLOPT_SSLVERSION");
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| 188 | return FALSE;
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| 189 | }
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| 190 |
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| 191 | switch(data->set.ssl.primary.version_max) {
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| 192 | case CURL_SSLVERSION_MAX_NONE:
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| 193 | case CURL_SSLVERSION_MAX_DEFAULT:
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| 194 | break;
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| 195 |
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| 196 | default:
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| 197 | if((data->set.ssl.primary.version_max >> 16) < sslver) {
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| 198 | failf(data, "CURL_SSLVERSION_MAX incompatible with CURL_SSLVERSION");
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| 199 | return FALSE;
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| 200 | }
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| 201 | }
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| 202 |
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| 203 | return TRUE;
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| 204 | }
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| 205 |
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| 206 | static CURLcode
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| 207 | ssl_connect_init_proxy(struct connectdata *conn, int sockindex)
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| 208 | {
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| 209 | DEBUGASSERT(conn->bits.proxy_ssl_connected[sockindex]);
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| 210 | if(ssl_connection_complete == conn->ssl[sockindex].state &&
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| 211 | !conn->proxy_ssl[sockindex].use) {
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| 212 | struct ssl_backend_data *pbdata;
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| 213 |
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| 214 | if(!Curl_ssl->support_https_proxy)
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| 215 | return CURLE_NOT_BUILT_IN;
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| 216 |
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| 217 | /* The pointers to the ssl backend data, which is opaque here, are swapped
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| 218 | rather than move the contents. */
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| 219 | pbdata = conn->proxy_ssl[sockindex].backend;
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| 220 | conn->proxy_ssl[sockindex] = conn->ssl[sockindex];
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| 221 |
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| 222 | memset(&conn->ssl[sockindex], 0, sizeof(conn->ssl[sockindex]));
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| 223 | memset(pbdata, 0, Curl_ssl->sizeof_ssl_backend_data);
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| 224 |
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| 225 | conn->ssl[sockindex].backend = pbdata;
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| 226 | }
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| 227 | return CURLE_OK;
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| 228 | }
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| 229 |
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| 230 | CURLcode
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| 231 | Curl_ssl_connect(struct connectdata *conn, int sockindex)
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| 232 | {
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| 233 | CURLcode result;
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| 234 |
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| 235 | if(conn->bits.proxy_ssl_connected[sockindex]) {
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| 236 | result = ssl_connect_init_proxy(conn, sockindex);
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| 237 | if(result)
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| 238 | return result;
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| 239 | }
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| 240 |
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| 241 | if(!ssl_prefs_check(conn->data))
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| 242 | return CURLE_SSL_CONNECT_ERROR;
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| 243 |
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| 244 | /* mark this is being ssl-enabled from here on. */
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| 245 | conn->ssl[sockindex].use = TRUE;
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| 246 | conn->ssl[sockindex].state = ssl_connection_negotiating;
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| 247 |
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| 248 | result = Curl_ssl->connect(conn, sockindex);
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| 249 |
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| 250 | if(!result)
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| 251 | Curl_pgrsTime(conn->data, TIMER_APPCONNECT); /* SSL is connected */
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| 252 |
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| 253 | return result;
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| 254 | }
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| 255 |
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| 256 | CURLcode
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| 257 | Curl_ssl_connect_nonblocking(struct connectdata *conn, int sockindex,
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| 258 | bool *done)
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| 259 | {
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| 260 | CURLcode result;
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| 261 | if(conn->bits.proxy_ssl_connected[sockindex]) {
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| 262 | result = ssl_connect_init_proxy(conn, sockindex);
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| 263 | if(result)
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| 264 | return result;
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| 265 | }
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| 266 |
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| 267 | if(!ssl_prefs_check(conn->data))
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| 268 | return CURLE_SSL_CONNECT_ERROR;
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| 269 |
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| 270 | /* mark this is being ssl requested from here on. */
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| 271 | conn->ssl[sockindex].use = TRUE;
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| 272 | result = Curl_ssl->connect_nonblocking(conn, sockindex, done);
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| 273 | if(!result && *done)
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| 274 | Curl_pgrsTime(conn->data, TIMER_APPCONNECT); /* SSL is connected */
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| 275 | return result;
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| 276 | }
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| 277 |
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| 278 | /*
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| 279 | * Lock shared SSL session data
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| 280 | */
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| 281 | void Curl_ssl_sessionid_lock(struct connectdata *conn)
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| 282 | {
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| 283 | if(SSLSESSION_SHARED(conn->data))
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| 284 | Curl_share_lock(conn->data,
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| 285 | CURL_LOCK_DATA_SSL_SESSION, CURL_LOCK_ACCESS_SINGLE);
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| 286 | }
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| 287 |
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| 288 | /*
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| 289 | * Unlock shared SSL session data
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| 290 | */
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| 291 | void Curl_ssl_sessionid_unlock(struct connectdata *conn)
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| 292 | {
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| 293 | if(SSLSESSION_SHARED(conn->data))
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| 294 | Curl_share_unlock(conn->data, CURL_LOCK_DATA_SSL_SESSION);
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| 295 | }
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| 296 |
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| 297 | /*
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| 298 | * Check if there's a session ID for the given connection in the cache, and if
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| 299 | * there's one suitable, it is provided. Returns TRUE when no entry matched.
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| 300 | */
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| 301 | bool Curl_ssl_getsessionid(struct connectdata *conn,
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| 302 | void **ssl_sessionid,
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| 303 | size_t *idsize, /* set 0 if unknown */
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| 304 | int sockindex)
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| 305 | {
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| 306 | struct curl_ssl_session *check;
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| 307 | struct Curl_easy *data = conn->data;
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| 308 | size_t i;
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| 309 | long *general_age;
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| 310 | bool no_match = TRUE;
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| 311 |
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| 312 | const bool isProxy = CONNECT_PROXY_SSL();
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| 313 | struct ssl_primary_config * const ssl_config = isProxy ?
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| 314 | &conn->proxy_ssl_config :
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| 315 | &conn->ssl_config;
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| 316 | const char * const name = isProxy ? conn->http_proxy.host.name :
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| 317 | conn->host.name;
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| 318 | int port = isProxy ? (int)conn->port : conn->remote_port;
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| 319 | *ssl_sessionid = NULL;
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| 320 |
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| 321 | DEBUGASSERT(SSL_SET_OPTION(primary.sessionid));
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| 322 |
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| 323 | if(!SSL_SET_OPTION(primary.sessionid))
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| 324 | /* session ID re-use is disabled */
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| 325 | return TRUE;
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| 326 |
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| 327 | /* Lock if shared */
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| 328 | if(SSLSESSION_SHARED(data))
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| 329 | general_age = &data->share->sessionage;
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| 330 | else
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| 331 | general_age = &data->state.sessionage;
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| 332 |
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| 333 | for(i = 0; i < data->set.general_ssl.max_ssl_sessions; i++) {
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| 334 | check = &data->state.session[i];
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| 335 | if(!check->sessionid)
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| 336 | /* not session ID means blank entry */
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| 337 | continue;
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| 338 | if(strcasecompare(name, check->name) &&
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| 339 | ((!conn->bits.conn_to_host && !check->conn_to_host) ||
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| 340 | (conn->bits.conn_to_host && check->conn_to_host &&
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| 341 | strcasecompare(conn->conn_to_host.name, check->conn_to_host))) &&
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| 342 | ((!conn->bits.conn_to_port && check->conn_to_port == -1) ||
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| 343 | (conn->bits.conn_to_port && check->conn_to_port != -1 &&
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| 344 | conn->conn_to_port == check->conn_to_port)) &&
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| 345 | (port == check->remote_port) &&
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| 346 | strcasecompare(conn->handler->scheme, check->scheme) &&
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| 347 | Curl_ssl_config_matches(ssl_config, &check->ssl_config)) {
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| 348 | /* yes, we have a session ID! */
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| 349 | (*general_age)++; /* increase general age */
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| 350 | check->age = *general_age; /* set this as used in this age */
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| 351 | *ssl_sessionid = check->sessionid;
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| 352 | if(idsize)
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| 353 | *idsize = check->idsize;
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| 354 | no_match = FALSE;
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| 355 | break;
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| 356 | }
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| 357 | }
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| 358 |
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| 359 | return no_match;
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| 360 | }
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| 361 |
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| 362 | /*
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| 363 | * Kill a single session ID entry in the cache.
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| 364 | */
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| 365 | void Curl_ssl_kill_session(struct curl_ssl_session *session)
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| 366 | {
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| 367 | if(session->sessionid) {
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| 368 | /* defensive check */
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| 369 |
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| 370 | /* free the ID the SSL-layer specific way */
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| 371 | Curl_ssl->session_free(session->sessionid);
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| 372 |
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| 373 | session->sessionid = NULL;
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| 374 | session->age = 0; /* fresh */
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| 375 |
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| 376 | Curl_free_primary_ssl_config(&session->ssl_config);
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| 377 |
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| 378 | Curl_safefree(session->name);
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| 379 | Curl_safefree(session->conn_to_host);
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| 380 | }
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| 381 | }
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| 382 |
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| 383 | /*
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| 384 | * Delete the given session ID from the cache.
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| 385 | */
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| 386 | void Curl_ssl_delsessionid(struct connectdata *conn, void *ssl_sessionid)
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| 387 | {
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| 388 | size_t i;
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| 389 | struct Curl_easy *data = conn->data;
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| 390 |
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| 391 | for(i = 0; i < data->set.general_ssl.max_ssl_sessions; i++) {
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| 392 | struct curl_ssl_session *check = &data->state.session[i];
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| 393 |
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| 394 | if(check->sessionid == ssl_sessionid) {
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| 395 | Curl_ssl_kill_session(check);
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| 396 | break;
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| 397 | }
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| 398 | }
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| 399 | }
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| 400 |
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| 401 | /*
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| 402 | * Store session id in the session cache. The ID passed on to this function
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| 403 | * must already have been extracted and allocated the proper way for the SSL
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| 404 | * layer. Curl_XXXX_session_free() will be called to free/kill the session ID
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| 405 | * later on.
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| 406 | */
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| 407 | CURLcode Curl_ssl_addsessionid(struct connectdata *conn,
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| 408 | void *ssl_sessionid,
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| 409 | size_t idsize,
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| 410 | int sockindex)
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| 411 | {
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| 412 | size_t i;
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| 413 | struct Curl_easy *data = conn->data; /* the mother of all structs */
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| 414 | struct curl_ssl_session *store = &data->state.session[0];
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| 415 | long oldest_age = data->state.session[0].age; /* zero if unused */
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| 416 | char *clone_host;
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| 417 | char *clone_conn_to_host;
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| 418 | int conn_to_port;
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| 419 | long *general_age;
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| 420 | const bool isProxy = CONNECT_PROXY_SSL();
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| 421 | struct ssl_primary_config * const ssl_config = isProxy ?
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| 422 | &conn->proxy_ssl_config :
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| 423 | &conn->ssl_config;
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| 424 |
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| 425 | DEBUGASSERT(SSL_SET_OPTION(primary.sessionid));
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| 426 |
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| 427 | clone_host = strdup(isProxy ? conn->http_proxy.host.name : conn->host.name);
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| 428 | if(!clone_host)
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| 429 | return CURLE_OUT_OF_MEMORY; /* bail out */
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| 430 |
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| 431 | if(conn->bits.conn_to_host) {
|
---|
| 432 | clone_conn_to_host = strdup(conn->conn_to_host.name);
|
---|
| 433 | if(!clone_conn_to_host) {
|
---|
| 434 | free(clone_host);
|
---|
| 435 | return CURLE_OUT_OF_MEMORY; /* bail out */
|
---|
| 436 | }
|
---|
| 437 | }
|
---|
| 438 | else
|
---|
| 439 | clone_conn_to_host = NULL;
|
---|
| 440 |
|
---|
| 441 | if(conn->bits.conn_to_port)
|
---|
| 442 | conn_to_port = conn->conn_to_port;
|
---|
| 443 | else
|
---|
| 444 | conn_to_port = -1;
|
---|
| 445 |
|
---|
| 446 | /* Now we should add the session ID and the host name to the cache, (remove
|
---|
| 447 | the oldest if necessary) */
|
---|
| 448 |
|
---|
| 449 | /* If using shared SSL session, lock! */
|
---|
| 450 | if(SSLSESSION_SHARED(data)) {
|
---|
| 451 | general_age = &data->share->sessionage;
|
---|
| 452 | }
|
---|
| 453 | else {
|
---|
| 454 | general_age = &data->state.sessionage;
|
---|
| 455 | }
|
---|
| 456 |
|
---|
| 457 | /* find an empty slot for us, or find the oldest */
|
---|
| 458 | for(i = 1; (i < data->set.general_ssl.max_ssl_sessions) &&
|
---|
| 459 | data->state.session[i].sessionid; i++) {
|
---|
| 460 | if(data->state.session[i].age < oldest_age) {
|
---|
| 461 | oldest_age = data->state.session[i].age;
|
---|
| 462 | store = &data->state.session[i];
|
---|
| 463 | }
|
---|
| 464 | }
|
---|
| 465 | if(i == data->set.general_ssl.max_ssl_sessions)
|
---|
| 466 | /* cache is full, we must "kill" the oldest entry! */
|
---|
| 467 | Curl_ssl_kill_session(store);
|
---|
| 468 | else
|
---|
| 469 | store = &data->state.session[i]; /* use this slot */
|
---|
| 470 |
|
---|
| 471 | /* now init the session struct wisely */
|
---|
| 472 | store->sessionid = ssl_sessionid;
|
---|
| 473 | store->idsize = idsize;
|
---|
| 474 | store->age = *general_age; /* set current age */
|
---|
| 475 | /* free it if there's one already present */
|
---|
| 476 | free(store->name);
|
---|
| 477 | free(store->conn_to_host);
|
---|
| 478 | store->name = clone_host; /* clone host name */
|
---|
| 479 | store->conn_to_host = clone_conn_to_host; /* clone connect to host name */
|
---|
| 480 | store->conn_to_port = conn_to_port; /* connect to port number */
|
---|
| 481 | /* port number */
|
---|
| 482 | store->remote_port = isProxy ? (int)conn->port : conn->remote_port;
|
---|
| 483 | store->scheme = conn->handler->scheme;
|
---|
| 484 |
|
---|
| 485 | if(!Curl_clone_primary_ssl_config(ssl_config, &store->ssl_config)) {
|
---|
| 486 | store->sessionid = NULL; /* let caller free sessionid */
|
---|
| 487 | free(clone_host);
|
---|
| 488 | free(clone_conn_to_host);
|
---|
| 489 | return CURLE_OUT_OF_MEMORY;
|
---|
| 490 | }
|
---|
| 491 |
|
---|
| 492 | return CURLE_OK;
|
---|
| 493 | }
|
---|
| 494 |
|
---|
| 495 |
|
---|
| 496 | void Curl_ssl_close_all(struct Curl_easy *data)
|
---|
| 497 | {
|
---|
| 498 | size_t i;
|
---|
| 499 | /* kill the session ID cache if not shared */
|
---|
| 500 | if(data->state.session && !SSLSESSION_SHARED(data)) {
|
---|
| 501 | for(i = 0; i < data->set.general_ssl.max_ssl_sessions; i++)
|
---|
| 502 | /* the single-killer function handles empty table slots */
|
---|
| 503 | Curl_ssl_kill_session(&data->state.session[i]);
|
---|
| 504 |
|
---|
| 505 | /* free the cache data */
|
---|
| 506 | Curl_safefree(data->state.session);
|
---|
| 507 | }
|
---|
| 508 |
|
---|
| 509 | Curl_ssl->close_all(data);
|
---|
| 510 | }
|
---|
| 511 |
|
---|
| 512 | #if defined(USE_OPENSSL) || defined(USE_GNUTLS) || defined(USE_SCHANNEL) || \
|
---|
| 513 | defined(USE_DARWINSSL) || defined(USE_POLARSSL) || defined(USE_NSS) || \
|
---|
| 514 | defined(USE_MBEDTLS)
|
---|
| 515 | int Curl_ssl_getsock(struct connectdata *conn, curl_socket_t *socks,
|
---|
| 516 | int numsocks)
|
---|
| 517 | {
|
---|
| 518 | struct ssl_connect_data *connssl = &conn->ssl[FIRSTSOCKET];
|
---|
| 519 |
|
---|
| 520 | if(!numsocks)
|
---|
| 521 | return GETSOCK_BLANK;
|
---|
| 522 |
|
---|
| 523 | if(connssl->connecting_state == ssl_connect_2_writing) {
|
---|
| 524 | /* write mode */
|
---|
| 525 | socks[0] = conn->sock[FIRSTSOCKET];
|
---|
| 526 | return GETSOCK_WRITESOCK(0);
|
---|
| 527 | }
|
---|
| 528 | if(connssl->connecting_state == ssl_connect_2_reading) {
|
---|
| 529 | /* read mode */
|
---|
| 530 | socks[0] = conn->sock[FIRSTSOCKET];
|
---|
| 531 | return GETSOCK_READSOCK(0);
|
---|
| 532 | }
|
---|
| 533 |
|
---|
| 534 | return GETSOCK_BLANK;
|
---|
| 535 | }
|
---|
| 536 | #else
|
---|
| 537 | int Curl_ssl_getsock(struct connectdata *conn,
|
---|
| 538 | curl_socket_t *socks,
|
---|
| 539 | int numsocks)
|
---|
| 540 | {
|
---|
| 541 | (void)conn;
|
---|
| 542 | (void)socks;
|
---|
| 543 | (void)numsocks;
|
---|
| 544 | return GETSOCK_BLANK;
|
---|
| 545 | }
|
---|
| 546 | /* USE_OPENSSL || USE_GNUTLS || USE_SCHANNEL || USE_DARWINSSL || USE_NSS */
|
---|
| 547 | #endif
|
---|
| 548 |
|
---|
| 549 | void Curl_ssl_close(struct connectdata *conn, int sockindex)
|
---|
| 550 | {
|
---|
| 551 | DEBUGASSERT((sockindex <= 1) && (sockindex >= -1));
|
---|
| 552 | Curl_ssl->close_one(conn, sockindex);
|
---|
| 553 | }
|
---|
| 554 |
|
---|
| 555 | CURLcode Curl_ssl_shutdown(struct connectdata *conn, int sockindex)
|
---|
| 556 | {
|
---|
| 557 | if(Curl_ssl->shutdown(conn, sockindex))
|
---|
| 558 | return CURLE_SSL_SHUTDOWN_FAILED;
|
---|
| 559 |
|
---|
| 560 | conn->ssl[sockindex].use = FALSE; /* get back to ordinary socket usage */
|
---|
| 561 | conn->ssl[sockindex].state = ssl_connection_none;
|
---|
| 562 |
|
---|
| 563 | conn->recv[sockindex] = Curl_recv_plain;
|
---|
| 564 | conn->send[sockindex] = Curl_send_plain;
|
---|
| 565 |
|
---|
| 566 | return CURLE_OK;
|
---|
| 567 | }
|
---|
| 568 |
|
---|
| 569 | /* Selects an SSL crypto engine
|
---|
| 570 | */
|
---|
| 571 | CURLcode Curl_ssl_set_engine(struct Curl_easy *data, const char *engine)
|
---|
| 572 | {
|
---|
| 573 | return Curl_ssl->set_engine(data, engine);
|
---|
| 574 | }
|
---|
| 575 |
|
---|
| 576 | /* Selects the default SSL crypto engine
|
---|
| 577 | */
|
---|
| 578 | CURLcode Curl_ssl_set_engine_default(struct Curl_easy *data)
|
---|
| 579 | {
|
---|
| 580 | return Curl_ssl->set_engine_default(data);
|
---|
| 581 | }
|
---|
| 582 |
|
---|
| 583 | /* Return list of OpenSSL crypto engine names. */
|
---|
| 584 | struct curl_slist *Curl_ssl_engines_list(struct Curl_easy *data)
|
---|
| 585 | {
|
---|
| 586 | return Curl_ssl->engines_list(data);
|
---|
| 587 | }
|
---|
| 588 |
|
---|
| 589 | /*
|
---|
| 590 | * This sets up a session ID cache to the specified size. Make sure this code
|
---|
| 591 | * is agnostic to what underlying SSL technology we use.
|
---|
| 592 | */
|
---|
| 593 | CURLcode Curl_ssl_initsessions(struct Curl_easy *data, size_t amount)
|
---|
| 594 | {
|
---|
| 595 | struct curl_ssl_session *session;
|
---|
| 596 |
|
---|
| 597 | if(data->state.session)
|
---|
| 598 | /* this is just a precaution to prevent multiple inits */
|
---|
| 599 | return CURLE_OK;
|
---|
| 600 |
|
---|
| 601 | session = calloc(amount, sizeof(struct curl_ssl_session));
|
---|
| 602 | if(!session)
|
---|
| 603 | return CURLE_OUT_OF_MEMORY;
|
---|
| 604 |
|
---|
| 605 | /* store the info in the SSL section */
|
---|
| 606 | data->set.general_ssl.max_ssl_sessions = amount;
|
---|
| 607 | data->state.session = session;
|
---|
| 608 | data->state.sessionage = 1; /* this is brand new */
|
---|
| 609 | return CURLE_OK;
|
---|
| 610 | }
|
---|
| 611 |
|
---|
| 612 | static size_t Curl_multissl_version(char *buffer, size_t size);
|
---|
| 613 |
|
---|
| 614 | size_t Curl_ssl_version(char *buffer, size_t size)
|
---|
| 615 | {
|
---|
| 616 | #ifdef CURL_WITH_MULTI_SSL
|
---|
| 617 | return Curl_multissl_version(buffer, size);
|
---|
| 618 | #else
|
---|
| 619 | return Curl_ssl->version(buffer, size);
|
---|
| 620 | #endif
|
---|
| 621 | }
|
---|
| 622 |
|
---|
| 623 | /*
|
---|
| 624 | * This function tries to determine connection status.
|
---|
| 625 | *
|
---|
| 626 | * Return codes:
|
---|
| 627 | * 1 means the connection is still in place
|
---|
| 628 | * 0 means the connection has been closed
|
---|
| 629 | * -1 means the connection status is unknown
|
---|
| 630 | */
|
---|
| 631 | int Curl_ssl_check_cxn(struct connectdata *conn)
|
---|
| 632 | {
|
---|
| 633 | return Curl_ssl->check_cxn(conn);
|
---|
| 634 | }
|
---|
| 635 |
|
---|
| 636 | bool Curl_ssl_data_pending(const struct connectdata *conn,
|
---|
| 637 | int connindex)
|
---|
| 638 | {
|
---|
| 639 | return Curl_ssl->data_pending(conn, connindex);
|
---|
| 640 | }
|
---|
| 641 |
|
---|
| 642 | void Curl_ssl_free_certinfo(struct Curl_easy *data)
|
---|
| 643 | {
|
---|
| 644 | int i;
|
---|
| 645 | struct curl_certinfo *ci = &data->info.certs;
|
---|
| 646 |
|
---|
| 647 | if(ci->num_of_certs) {
|
---|
| 648 | /* free all individual lists used */
|
---|
| 649 | for(i = 0; i<ci->num_of_certs; i++) {
|
---|
| 650 | curl_slist_free_all(ci->certinfo[i]);
|
---|
| 651 | ci->certinfo[i] = NULL;
|
---|
| 652 | }
|
---|
| 653 |
|
---|
| 654 | free(ci->certinfo); /* free the actual array too */
|
---|
| 655 | ci->certinfo = NULL;
|
---|
| 656 | ci->num_of_certs = 0;
|
---|
| 657 | }
|
---|
| 658 | }
|
---|
| 659 |
|
---|
| 660 | CURLcode Curl_ssl_init_certinfo(struct Curl_easy *data, int num)
|
---|
| 661 | {
|
---|
| 662 | struct curl_certinfo *ci = &data->info.certs;
|
---|
| 663 | struct curl_slist **table;
|
---|
| 664 |
|
---|
| 665 | /* Free any previous certificate information structures */
|
---|
| 666 | Curl_ssl_free_certinfo(data);
|
---|
| 667 |
|
---|
| 668 | /* Allocate the required certificate information structures */
|
---|
| 669 | table = calloc((size_t) num, sizeof(struct curl_slist *));
|
---|
| 670 | if(!table)
|
---|
| 671 | return CURLE_OUT_OF_MEMORY;
|
---|
| 672 |
|
---|
| 673 | ci->num_of_certs = num;
|
---|
| 674 | ci->certinfo = table;
|
---|
| 675 |
|
---|
| 676 | return CURLE_OK;
|
---|
| 677 | }
|
---|
| 678 |
|
---|
| 679 | /*
|
---|
| 680 | * 'value' is NOT a zero terminated string
|
---|
| 681 | */
|
---|
| 682 | CURLcode Curl_ssl_push_certinfo_len(struct Curl_easy *data,
|
---|
| 683 | int certnum,
|
---|
| 684 | const char *label,
|
---|
| 685 | const char *value,
|
---|
| 686 | size_t valuelen)
|
---|
| 687 | {
|
---|
| 688 | struct curl_certinfo *ci = &data->info.certs;
|
---|
| 689 | char *output;
|
---|
| 690 | struct curl_slist *nl;
|
---|
| 691 | CURLcode result = CURLE_OK;
|
---|
| 692 | size_t labellen = strlen(label);
|
---|
| 693 | size_t outlen = labellen + 1 + valuelen + 1; /* label:value\0 */
|
---|
| 694 |
|
---|
| 695 | output = malloc(outlen);
|
---|
| 696 | if(!output)
|
---|
| 697 | return CURLE_OUT_OF_MEMORY;
|
---|
| 698 |
|
---|
| 699 | /* sprintf the label and colon */
|
---|
| 700 | snprintf(output, outlen, "%s:", label);
|
---|
| 701 |
|
---|
| 702 | /* memcpy the value (it might not be zero terminated) */
|
---|
| 703 | memcpy(&output[labellen + 1], value, valuelen);
|
---|
| 704 |
|
---|
| 705 | /* zero terminate the output */
|
---|
| 706 | output[labellen + 1 + valuelen] = 0;
|
---|
| 707 |
|
---|
| 708 | nl = Curl_slist_append_nodup(ci->certinfo[certnum], output);
|
---|
| 709 | if(!nl) {
|
---|
| 710 | free(output);
|
---|
| 711 | curl_slist_free_all(ci->certinfo[certnum]);
|
---|
| 712 | result = CURLE_OUT_OF_MEMORY;
|
---|
| 713 | }
|
---|
| 714 |
|
---|
| 715 | ci->certinfo[certnum] = nl;
|
---|
| 716 | return result;
|
---|
| 717 | }
|
---|
| 718 |
|
---|
| 719 | /*
|
---|
| 720 | * This is a convenience function for push_certinfo_len that takes a zero
|
---|
| 721 | * terminated value.
|
---|
| 722 | */
|
---|
| 723 | CURLcode Curl_ssl_push_certinfo(struct Curl_easy *data,
|
---|
| 724 | int certnum,
|
---|
| 725 | const char *label,
|
---|
| 726 | const char *value)
|
---|
| 727 | {
|
---|
| 728 | size_t valuelen = strlen(value);
|
---|
| 729 |
|
---|
| 730 | return Curl_ssl_push_certinfo_len(data, certnum, label, value, valuelen);
|
---|
| 731 | }
|
---|
| 732 |
|
---|
| 733 | CURLcode Curl_ssl_random(struct Curl_easy *data,
|
---|
| 734 | unsigned char *entropy,
|
---|
| 735 | size_t length)
|
---|
| 736 | {
|
---|
| 737 | return Curl_ssl->random(data, entropy, length);
|
---|
| 738 | }
|
---|
| 739 |
|
---|
| 740 | /*
|
---|
| 741 | * Public key pem to der conversion
|
---|
| 742 | */
|
---|
| 743 |
|
---|
| 744 | static CURLcode pubkey_pem_to_der(const char *pem,
|
---|
| 745 | unsigned char **der, size_t *der_len)
|
---|
| 746 | {
|
---|
| 747 | char *stripped_pem, *begin_pos, *end_pos;
|
---|
| 748 | size_t pem_count, stripped_pem_count = 0, pem_len;
|
---|
| 749 | CURLcode result;
|
---|
| 750 |
|
---|
| 751 | /* if no pem, exit. */
|
---|
| 752 | if(!pem)
|
---|
| 753 | return CURLE_BAD_CONTENT_ENCODING;
|
---|
| 754 |
|
---|
| 755 | begin_pos = strstr(pem, "-----BEGIN PUBLIC KEY-----");
|
---|
| 756 | if(!begin_pos)
|
---|
| 757 | return CURLE_BAD_CONTENT_ENCODING;
|
---|
| 758 |
|
---|
| 759 | pem_count = begin_pos - pem;
|
---|
| 760 | /* Invalid if not at beginning AND not directly following \n */
|
---|
| 761 | if(0 != pem_count && '\n' != pem[pem_count - 1])
|
---|
| 762 | return CURLE_BAD_CONTENT_ENCODING;
|
---|
| 763 |
|
---|
| 764 | /* 26 is length of "-----BEGIN PUBLIC KEY-----" */
|
---|
| 765 | pem_count += 26;
|
---|
| 766 |
|
---|
| 767 | /* Invalid if not directly following \n */
|
---|
| 768 | end_pos = strstr(pem + pem_count, "\n-----END PUBLIC KEY-----");
|
---|
| 769 | if(!end_pos)
|
---|
| 770 | return CURLE_BAD_CONTENT_ENCODING;
|
---|
| 771 |
|
---|
| 772 | pem_len = end_pos - pem;
|
---|
| 773 |
|
---|
| 774 | stripped_pem = malloc(pem_len - pem_count + 1);
|
---|
| 775 | if(!stripped_pem)
|
---|
| 776 | return CURLE_OUT_OF_MEMORY;
|
---|
| 777 |
|
---|
| 778 | /*
|
---|
| 779 | * Here we loop through the pem array one character at a time between the
|
---|
| 780 | * correct indices, and place each character that is not '\n' or '\r'
|
---|
| 781 | * into the stripped_pem array, which should represent the raw base64 string
|
---|
| 782 | */
|
---|
| 783 | while(pem_count < pem_len) {
|
---|
| 784 | if('\n' != pem[pem_count] && '\r' != pem[pem_count])
|
---|
| 785 | stripped_pem[stripped_pem_count++] = pem[pem_count];
|
---|
| 786 | ++pem_count;
|
---|
| 787 | }
|
---|
| 788 | /* Place the null terminator in the correct place */
|
---|
| 789 | stripped_pem[stripped_pem_count] = '\0';
|
---|
| 790 |
|
---|
| 791 | result = Curl_base64_decode(stripped_pem, der, der_len);
|
---|
| 792 |
|
---|
| 793 | Curl_safefree(stripped_pem);
|
---|
| 794 |
|
---|
| 795 | return result;
|
---|
| 796 | }
|
---|
| 797 |
|
---|
| 798 | /*
|
---|
| 799 | * Generic pinned public key check.
|
---|
| 800 | */
|
---|
| 801 |
|
---|
| 802 | CURLcode Curl_pin_peer_pubkey(struct Curl_easy *data,
|
---|
| 803 | const char *pinnedpubkey,
|
---|
| 804 | const unsigned char *pubkey, size_t pubkeylen)
|
---|
| 805 | {
|
---|
| 806 | FILE *fp;
|
---|
| 807 | unsigned char *buf = NULL, *pem_ptr = NULL;
|
---|
| 808 | long filesize;
|
---|
| 809 | size_t size, pem_len;
|
---|
| 810 | CURLcode pem_read;
|
---|
| 811 | CURLcode result = CURLE_SSL_PINNEDPUBKEYNOTMATCH;
|
---|
| 812 | CURLcode encode;
|
---|
| 813 | size_t encodedlen, pinkeylen;
|
---|
| 814 | char *encoded, *pinkeycopy, *begin_pos, *end_pos;
|
---|
| 815 | unsigned char *sha256sumdigest = NULL;
|
---|
| 816 |
|
---|
| 817 | /* if a path wasn't specified, don't pin */
|
---|
| 818 | if(!pinnedpubkey)
|
---|
| 819 | return CURLE_OK;
|
---|
| 820 | if(!pubkey || !pubkeylen)
|
---|
| 821 | return result;
|
---|
| 822 |
|
---|
| 823 | /* only do this if pinnedpubkey starts with "sha256//", length 8 */
|
---|
| 824 | if(strncmp(pinnedpubkey, "sha256//", 8) == 0) {
|
---|
| 825 | if(!Curl_ssl->sha256sum) {
|
---|
| 826 | /* without sha256 support, this cannot match */
|
---|
| 827 | return result;
|
---|
| 828 | }
|
---|
| 829 |
|
---|
| 830 | /* compute sha256sum of public key */
|
---|
| 831 | sha256sumdigest = malloc(CURL_SHA256_DIGEST_LENGTH);
|
---|
| 832 | if(!sha256sumdigest)
|
---|
| 833 | return CURLE_OUT_OF_MEMORY;
|
---|
| 834 | Curl_ssl->sha256sum(pubkey, pubkeylen,
|
---|
| 835 | sha256sumdigest, CURL_SHA256_DIGEST_LENGTH);
|
---|
| 836 | encode = Curl_base64_encode(data, (char *)sha256sumdigest,
|
---|
| 837 | CURL_SHA256_DIGEST_LENGTH, &encoded,
|
---|
| 838 | &encodedlen);
|
---|
| 839 | Curl_safefree(sha256sumdigest);
|
---|
| 840 |
|
---|
| 841 | if(encode)
|
---|
| 842 | return encode;
|
---|
| 843 |
|
---|
| 844 | infof(data, "\t public key hash: sha256//%s\n", encoded);
|
---|
| 845 |
|
---|
| 846 | /* it starts with sha256//, copy so we can modify it */
|
---|
| 847 | pinkeylen = strlen(pinnedpubkey) + 1;
|
---|
| 848 | pinkeycopy = malloc(pinkeylen);
|
---|
| 849 | if(!pinkeycopy) {
|
---|
| 850 | Curl_safefree(encoded);
|
---|
| 851 | return CURLE_OUT_OF_MEMORY;
|
---|
| 852 | }
|
---|
| 853 | memcpy(pinkeycopy, pinnedpubkey, pinkeylen);
|
---|
| 854 | /* point begin_pos to the copy, and start extracting keys */
|
---|
| 855 | begin_pos = pinkeycopy;
|
---|
| 856 | do {
|
---|
| 857 | end_pos = strstr(begin_pos, ";sha256//");
|
---|
| 858 | /*
|
---|
| 859 | * if there is an end_pos, null terminate,
|
---|
| 860 | * otherwise it'll go to the end of the original string
|
---|
| 861 | */
|
---|
| 862 | if(end_pos)
|
---|
| 863 | end_pos[0] = '\0';
|
---|
| 864 |
|
---|
| 865 | /* compare base64 sha256 digests, 8 is the length of "sha256//" */
|
---|
| 866 | if(encodedlen == strlen(begin_pos + 8) &&
|
---|
| 867 | !memcmp(encoded, begin_pos + 8, encodedlen)) {
|
---|
| 868 | result = CURLE_OK;
|
---|
| 869 | break;
|
---|
| 870 | }
|
---|
| 871 |
|
---|
| 872 | /*
|
---|
| 873 | * change back the null-terminator we changed earlier,
|
---|
| 874 | * and look for next begin
|
---|
| 875 | */
|
---|
| 876 | if(end_pos) {
|
---|
| 877 | end_pos[0] = ';';
|
---|
| 878 | begin_pos = strstr(end_pos, "sha256//");
|
---|
| 879 | }
|
---|
| 880 | } while(end_pos && begin_pos);
|
---|
| 881 | Curl_safefree(encoded);
|
---|
| 882 | Curl_safefree(pinkeycopy);
|
---|
| 883 | return result;
|
---|
| 884 | }
|
---|
| 885 |
|
---|
| 886 | fp = fopen(pinnedpubkey, "rb");
|
---|
| 887 | if(!fp)
|
---|
| 888 | return result;
|
---|
| 889 |
|
---|
| 890 | do {
|
---|
| 891 | /* Determine the file's size */
|
---|
| 892 | if(fseek(fp, 0, SEEK_END))
|
---|
| 893 | break;
|
---|
| 894 | filesize = ftell(fp);
|
---|
| 895 | if(fseek(fp, 0, SEEK_SET))
|
---|
| 896 | break;
|
---|
| 897 | if(filesize < 0 || filesize > MAX_PINNED_PUBKEY_SIZE)
|
---|
| 898 | break;
|
---|
| 899 |
|
---|
| 900 | /*
|
---|
| 901 | * if the size of our certificate is bigger than the file
|
---|
| 902 | * size then it can't match
|
---|
| 903 | */
|
---|
| 904 | size = curlx_sotouz((curl_off_t) filesize);
|
---|
| 905 | if(pubkeylen > size)
|
---|
| 906 | break;
|
---|
| 907 |
|
---|
| 908 | /*
|
---|
| 909 | * Allocate buffer for the pinned key
|
---|
| 910 | * With 1 additional byte for null terminator in case of PEM key
|
---|
| 911 | */
|
---|
| 912 | buf = malloc(size + 1);
|
---|
| 913 | if(!buf)
|
---|
| 914 | break;
|
---|
| 915 |
|
---|
| 916 | /* Returns number of elements read, which should be 1 */
|
---|
| 917 | if((int) fread(buf, size, 1, fp) != 1)
|
---|
| 918 | break;
|
---|
| 919 |
|
---|
| 920 | /* If the sizes are the same, it can't be base64 encoded, must be der */
|
---|
| 921 | if(pubkeylen == size) {
|
---|
| 922 | if(!memcmp(pubkey, buf, pubkeylen))
|
---|
| 923 | result = CURLE_OK;
|
---|
| 924 | break;
|
---|
| 925 | }
|
---|
| 926 |
|
---|
| 927 | /*
|
---|
| 928 | * Otherwise we will assume it's PEM and try to decode it
|
---|
| 929 | * after placing null terminator
|
---|
| 930 | */
|
---|
| 931 | buf[size] = '\0';
|
---|
| 932 | pem_read = pubkey_pem_to_der((const char *)buf, &pem_ptr, &pem_len);
|
---|
| 933 | /* if it wasn't read successfully, exit */
|
---|
| 934 | if(pem_read)
|
---|
| 935 | break;
|
---|
| 936 |
|
---|
| 937 | /*
|
---|
| 938 | * if the size of our certificate doesn't match the size of
|
---|
| 939 | * the decoded file, they can't be the same, otherwise compare
|
---|
| 940 | */
|
---|
| 941 | if(pubkeylen == pem_len && !memcmp(pubkey, pem_ptr, pubkeylen))
|
---|
| 942 | result = CURLE_OK;
|
---|
| 943 | } while(0);
|
---|
| 944 |
|
---|
| 945 | Curl_safefree(buf);
|
---|
| 946 | Curl_safefree(pem_ptr);
|
---|
| 947 | fclose(fp);
|
---|
| 948 |
|
---|
| 949 | return result;
|
---|
| 950 | }
|
---|
| 951 |
|
---|
| 952 | #ifndef CURL_DISABLE_CRYPTO_AUTH
|
---|
| 953 | CURLcode Curl_ssl_md5sum(unsigned char *tmp, /* input */
|
---|
| 954 | size_t tmplen,
|
---|
| 955 | unsigned char *md5sum, /* output */
|
---|
| 956 | size_t md5len)
|
---|
| 957 | {
|
---|
| 958 | return Curl_ssl->md5sum(tmp, tmplen, md5sum, md5len);
|
---|
| 959 | }
|
---|
| 960 | #endif
|
---|
| 961 |
|
---|
| 962 | /*
|
---|
| 963 | * Check whether the SSL backend supports the status_request extension.
|
---|
| 964 | */
|
---|
| 965 | bool Curl_ssl_cert_status_request(void)
|
---|
| 966 | {
|
---|
| 967 | return Curl_ssl->cert_status_request();
|
---|
| 968 | }
|
---|
| 969 |
|
---|
| 970 | /*
|
---|
| 971 | * Check whether the SSL backend supports false start.
|
---|
| 972 | */
|
---|
| 973 | bool Curl_ssl_false_start(void)
|
---|
| 974 | {
|
---|
| 975 | return Curl_ssl->false_start();
|
---|
| 976 | }
|
---|
| 977 |
|
---|
| 978 | /*
|
---|
| 979 | * Default implementations for unsupported functions.
|
---|
| 980 | */
|
---|
| 981 |
|
---|
| 982 | int Curl_none_init(void)
|
---|
| 983 | {
|
---|
| 984 | return 1;
|
---|
| 985 | }
|
---|
| 986 |
|
---|
| 987 | void Curl_none_cleanup(void)
|
---|
| 988 | { }
|
---|
| 989 |
|
---|
| 990 | int Curl_none_shutdown(struct connectdata *conn UNUSED_PARAM,
|
---|
| 991 | int sockindex UNUSED_PARAM)
|
---|
| 992 | {
|
---|
| 993 | (void)conn;
|
---|
| 994 | (void)sockindex;
|
---|
| 995 | return 0;
|
---|
| 996 | }
|
---|
| 997 |
|
---|
| 998 | int Curl_none_check_cxn(struct connectdata *conn UNUSED_PARAM)
|
---|
| 999 | {
|
---|
| 1000 | (void)conn;
|
---|
| 1001 | return -1;
|
---|
| 1002 | }
|
---|
| 1003 |
|
---|
| 1004 | CURLcode Curl_none_random(struct Curl_easy *data UNUSED_PARAM,
|
---|
| 1005 | unsigned char *entropy UNUSED_PARAM,
|
---|
| 1006 | size_t length UNUSED_PARAM)
|
---|
| 1007 | {
|
---|
| 1008 | (void)data;
|
---|
| 1009 | (void)entropy;
|
---|
| 1010 | (void)length;
|
---|
| 1011 | return CURLE_NOT_BUILT_IN;
|
---|
| 1012 | }
|
---|
| 1013 |
|
---|
| 1014 | void Curl_none_close_all(struct Curl_easy *data UNUSED_PARAM)
|
---|
| 1015 | {
|
---|
| 1016 | (void)data;
|
---|
| 1017 | }
|
---|
| 1018 |
|
---|
| 1019 | void Curl_none_session_free(void *ptr UNUSED_PARAM)
|
---|
| 1020 | {
|
---|
| 1021 | (void)ptr;
|
---|
| 1022 | }
|
---|
| 1023 |
|
---|
| 1024 | bool Curl_none_data_pending(const struct connectdata *conn UNUSED_PARAM,
|
---|
| 1025 | int connindex UNUSED_PARAM)
|
---|
| 1026 | {
|
---|
| 1027 | (void)conn;
|
---|
| 1028 | (void)connindex;
|
---|
| 1029 | return 0;
|
---|
| 1030 | }
|
---|
| 1031 |
|
---|
| 1032 | bool Curl_none_cert_status_request(void)
|
---|
| 1033 | {
|
---|
| 1034 | return FALSE;
|
---|
| 1035 | }
|
---|
| 1036 |
|
---|
| 1037 | CURLcode Curl_none_set_engine(struct Curl_easy *data UNUSED_PARAM,
|
---|
| 1038 | const char *engine UNUSED_PARAM)
|
---|
| 1039 | {
|
---|
| 1040 | (void)data;
|
---|
| 1041 | (void)engine;
|
---|
| 1042 | return CURLE_NOT_BUILT_IN;
|
---|
| 1043 | }
|
---|
| 1044 |
|
---|
| 1045 | CURLcode Curl_none_set_engine_default(struct Curl_easy *data UNUSED_PARAM)
|
---|
| 1046 | {
|
---|
| 1047 | (void)data;
|
---|
| 1048 | return CURLE_NOT_BUILT_IN;
|
---|
| 1049 | }
|
---|
| 1050 |
|
---|
| 1051 | struct curl_slist *Curl_none_engines_list(struct Curl_easy *data UNUSED_PARAM)
|
---|
| 1052 | {
|
---|
| 1053 | (void)data;
|
---|
| 1054 | return (struct curl_slist *)NULL;
|
---|
| 1055 | }
|
---|
| 1056 |
|
---|
| 1057 | bool Curl_none_false_start(void)
|
---|
| 1058 | {
|
---|
| 1059 | return FALSE;
|
---|
| 1060 | }
|
---|
| 1061 |
|
---|
| 1062 | #ifndef CURL_DISABLE_CRYPTO_AUTH
|
---|
| 1063 | CURLcode Curl_none_md5sum(unsigned char *input, size_t inputlen,
|
---|
| 1064 | unsigned char *md5sum, size_t md5len UNUSED_PARAM)
|
---|
| 1065 | {
|
---|
| 1066 | MD5_context *MD5pw;
|
---|
| 1067 |
|
---|
| 1068 | (void)md5len;
|
---|
| 1069 |
|
---|
| 1070 | MD5pw = Curl_MD5_init(Curl_DIGEST_MD5);
|
---|
| 1071 | if(!MD5pw)
|
---|
| 1072 | return CURLE_OUT_OF_MEMORY;
|
---|
| 1073 | Curl_MD5_update(MD5pw, input, curlx_uztoui(inputlen));
|
---|
| 1074 | Curl_MD5_final(MD5pw, md5sum);
|
---|
| 1075 | return CURLE_OK;
|
---|
| 1076 | }
|
---|
| 1077 | #else
|
---|
| 1078 | CURLcode Curl_none_md5sum(unsigned char *input UNUSED_PARAM,
|
---|
| 1079 | size_t inputlen UNUSED_PARAM,
|
---|
| 1080 | unsigned char *md5sum UNUSED_PARAM,
|
---|
| 1081 | size_t md5len UNUSED_PARAM)
|
---|
| 1082 | {
|
---|
| 1083 | (void)input;
|
---|
| 1084 | (void)inputlen;
|
---|
| 1085 | (void)md5sum;
|
---|
| 1086 | (void)md5len;
|
---|
| 1087 | return CURLE_NOT_BUILT_IN;
|
---|
| 1088 | }
|
---|
| 1089 | #endif
|
---|
| 1090 |
|
---|
| 1091 | static int Curl_multissl_init(void)
|
---|
| 1092 | {
|
---|
| 1093 | if(multissl_init(NULL))
|
---|
| 1094 | return 1;
|
---|
| 1095 | return Curl_ssl->init();
|
---|
| 1096 | }
|
---|
| 1097 |
|
---|
| 1098 | static CURLcode Curl_multissl_connect(struct connectdata *conn, int sockindex)
|
---|
| 1099 | {
|
---|
| 1100 | if(multissl_init(NULL))
|
---|
| 1101 | return CURLE_FAILED_INIT;
|
---|
| 1102 | return Curl_ssl->connect(conn, sockindex);
|
---|
| 1103 | }
|
---|
| 1104 |
|
---|
| 1105 | static CURLcode Curl_multissl_connect_nonblocking(struct connectdata *conn,
|
---|
| 1106 | int sockindex, bool *done)
|
---|
| 1107 | {
|
---|
| 1108 | if(multissl_init(NULL))
|
---|
| 1109 | return CURLE_FAILED_INIT;
|
---|
| 1110 | return Curl_ssl->connect_nonblocking(conn, sockindex, done);
|
---|
| 1111 | }
|
---|
| 1112 |
|
---|
| 1113 | static void *Curl_multissl_get_internals(struct ssl_connect_data *connssl,
|
---|
| 1114 | CURLINFO info)
|
---|
| 1115 | {
|
---|
| 1116 | if(multissl_init(NULL))
|
---|
| 1117 | return NULL;
|
---|
| 1118 | return Curl_ssl->get_internals(connssl, info);
|
---|
| 1119 | }
|
---|
| 1120 |
|
---|
| 1121 | static void Curl_multissl_close(struct connectdata *conn, int sockindex)
|
---|
| 1122 | {
|
---|
| 1123 | if(multissl_init(NULL))
|
---|
| 1124 | return;
|
---|
| 1125 | Curl_ssl->close_one(conn, sockindex);
|
---|
| 1126 | }
|
---|
| 1127 |
|
---|
| 1128 | static const struct Curl_ssl Curl_ssl_multi = {
|
---|
| 1129 | { CURLSSLBACKEND_NONE, "multi" }, /* info */
|
---|
| 1130 |
|
---|
| 1131 | 0, /* have_ca_path */
|
---|
| 1132 | 0, /* have_certinfo */
|
---|
| 1133 | 0, /* have_pinnedpubkey */
|
---|
| 1134 | 0, /* have_ssl_ctx */
|
---|
| 1135 | 0, /* support_https_proxy */
|
---|
| 1136 |
|
---|
| 1137 | (size_t)-1, /* something insanely large to be on the safe side */
|
---|
| 1138 |
|
---|
| 1139 | Curl_multissl_init, /* init */
|
---|
| 1140 | Curl_none_cleanup, /* cleanup */
|
---|
| 1141 | Curl_multissl_version, /* version */
|
---|
| 1142 | Curl_none_check_cxn, /* check_cxn */
|
---|
| 1143 | Curl_none_shutdown, /* shutdown */
|
---|
| 1144 | Curl_none_data_pending, /* data_pending */
|
---|
| 1145 | Curl_none_random, /* random */
|
---|
| 1146 | Curl_none_cert_status_request, /* cert_status_request */
|
---|
| 1147 | Curl_multissl_connect, /* connect */
|
---|
| 1148 | Curl_multissl_connect_nonblocking, /* connect_nonblocking */
|
---|
| 1149 | Curl_multissl_get_internals, /* get_internals */
|
---|
| 1150 | Curl_multissl_close, /* close_one */
|
---|
| 1151 | Curl_none_close_all, /* close_all */
|
---|
| 1152 | Curl_none_session_free, /* session_free */
|
---|
| 1153 | Curl_none_set_engine, /* set_engine */
|
---|
| 1154 | Curl_none_set_engine_default, /* set_engine_default */
|
---|
| 1155 | Curl_none_engines_list, /* engines_list */
|
---|
| 1156 | Curl_none_false_start, /* false_start */
|
---|
| 1157 | Curl_none_md5sum, /* md5sum */
|
---|
| 1158 | NULL /* sha256sum */
|
---|
| 1159 | };
|
---|
| 1160 |
|
---|
| 1161 | const struct Curl_ssl *Curl_ssl =
|
---|
| 1162 | #if defined(CURL_WITH_MULTI_SSL)
|
---|
| 1163 | &Curl_ssl_multi;
|
---|
| 1164 | #elif defined(USE_AXTLS)
|
---|
| 1165 | &Curl_ssl_axtls;
|
---|
| 1166 | #elif defined(USE_CYASSL)
|
---|
| 1167 | &Curl_ssl_cyassl;
|
---|
| 1168 | #elif defined(USE_DARWINSSL)
|
---|
| 1169 | &Curl_ssl_darwinssl;
|
---|
| 1170 | #elif defined(USE_GNUTLS)
|
---|
| 1171 | &Curl_ssl_gnutls;
|
---|
| 1172 | #elif defined(USE_GSKIT)
|
---|
| 1173 | &Curl_ssl_gskit;
|
---|
| 1174 | #elif defined(USE_MBEDTLS)
|
---|
| 1175 | &Curl_ssl_mbedtls;
|
---|
| 1176 | #elif defined(USE_NSS)
|
---|
| 1177 | &Curl_ssl_nss;
|
---|
| 1178 | #elif defined(USE_OPENSSL)
|
---|
| 1179 | &Curl_ssl_openssl;
|
---|
| 1180 | #elif defined(USE_POLARSSL)
|
---|
| 1181 | &Curl_ssl_polarssl;
|
---|
| 1182 | #elif defined(USE_SCHANNEL)
|
---|
| 1183 | &Curl_ssl_schannel;
|
---|
| 1184 | #else
|
---|
| 1185 | #error "Missing struct Curl_ssl for selected SSL backend"
|
---|
| 1186 | #endif
|
---|
| 1187 |
|
---|
| 1188 | static const struct Curl_ssl *available_backends[] = {
|
---|
| 1189 | #if defined(USE_AXTLS)
|
---|
| 1190 | &Curl_ssl_axtls,
|
---|
| 1191 | #endif
|
---|
| 1192 | #if defined(USE_CYASSL)
|
---|
| 1193 | &Curl_ssl_cyassl,
|
---|
| 1194 | #endif
|
---|
| 1195 | #if defined(USE_DARWINSSL)
|
---|
| 1196 | &Curl_ssl_darwinssl,
|
---|
| 1197 | #endif
|
---|
| 1198 | #if defined(USE_GNUTLS)
|
---|
| 1199 | &Curl_ssl_gnutls,
|
---|
| 1200 | #endif
|
---|
| 1201 | #if defined(USE_GSKIT)
|
---|
| 1202 | &Curl_ssl_gskit,
|
---|
| 1203 | #endif
|
---|
| 1204 | #if defined(USE_MBEDTLS)
|
---|
| 1205 | &Curl_ssl_mbedtls,
|
---|
| 1206 | #endif
|
---|
| 1207 | #if defined(USE_NSS)
|
---|
| 1208 | &Curl_ssl_nss,
|
---|
| 1209 | #endif
|
---|
| 1210 | #if defined(USE_OPENSSL)
|
---|
| 1211 | &Curl_ssl_openssl,
|
---|
| 1212 | #endif
|
---|
| 1213 | #if defined(USE_POLARSSL)
|
---|
| 1214 | &Curl_ssl_polarssl,
|
---|
| 1215 | #endif
|
---|
| 1216 | #if defined(USE_SCHANNEL)
|
---|
| 1217 | &Curl_ssl_schannel,
|
---|
| 1218 | #endif
|
---|
| 1219 | NULL
|
---|
| 1220 | };
|
---|
| 1221 |
|
---|
| 1222 | static size_t Curl_multissl_version(char *buffer, size_t size)
|
---|
| 1223 | {
|
---|
| 1224 | static const struct Curl_ssl *selected;
|
---|
| 1225 | static char backends[200];
|
---|
| 1226 | static size_t total;
|
---|
| 1227 | const struct Curl_ssl *current;
|
---|
| 1228 |
|
---|
| 1229 | current = Curl_ssl == &Curl_ssl_multi ? available_backends[0] : Curl_ssl;
|
---|
| 1230 |
|
---|
| 1231 | if(current != selected) {
|
---|
| 1232 | char *p = backends;
|
---|
| 1233 | int i;
|
---|
| 1234 |
|
---|
| 1235 | selected = current;
|
---|
| 1236 |
|
---|
| 1237 | for(i = 0; available_backends[i]; i++) {
|
---|
| 1238 | if(i)
|
---|
| 1239 | *(p++) = ' ';
|
---|
| 1240 | if(selected != available_backends[i])
|
---|
| 1241 | *(p++) = '(';
|
---|
| 1242 | p += available_backends[i]->version(p, backends + sizeof(backends) - p);
|
---|
| 1243 | if(selected != available_backends[i])
|
---|
| 1244 | *(p++) = ')';
|
---|
| 1245 | }
|
---|
| 1246 | *p = '\0';
|
---|
| 1247 | total = p - backends;
|
---|
| 1248 | }
|
---|
| 1249 |
|
---|
| 1250 | if(size < total)
|
---|
| 1251 | memcpy(buffer, backends, total + 1);
|
---|
| 1252 | else {
|
---|
| 1253 | memcpy(buffer, backends, size - 1);
|
---|
| 1254 | buffer[size - 1] = '\0';
|
---|
| 1255 | }
|
---|
| 1256 |
|
---|
| 1257 | return total;
|
---|
| 1258 | }
|
---|
| 1259 |
|
---|
| 1260 | static int multissl_init(const struct Curl_ssl *backend)
|
---|
| 1261 | {
|
---|
| 1262 | const char *env;
|
---|
| 1263 | int i;
|
---|
| 1264 |
|
---|
| 1265 | if(Curl_ssl != &Curl_ssl_multi)
|
---|
| 1266 | return 1;
|
---|
| 1267 |
|
---|
| 1268 | if(backend) {
|
---|
| 1269 | Curl_ssl = backend;
|
---|
| 1270 | return 0;
|
---|
| 1271 | }
|
---|
| 1272 |
|
---|
| 1273 | if(!available_backends[0])
|
---|
| 1274 | return 1;
|
---|
| 1275 |
|
---|
| 1276 | env = getenv("CURL_SSL_BACKEND");
|
---|
| 1277 | #ifdef CURL_DEFAULT_SSL_BACKEND
|
---|
| 1278 | if(!env)
|
---|
| 1279 | env = CURL_DEFAULT_SSL_BACKEND;
|
---|
| 1280 | #endif
|
---|
| 1281 | if(env) {
|
---|
| 1282 | for(i = 0; available_backends[i]; i++) {
|
---|
| 1283 | if(strcasecompare(env, available_backends[i]->info.name)) {
|
---|
| 1284 | Curl_ssl = available_backends[i];
|
---|
| 1285 | return 0;
|
---|
| 1286 | }
|
---|
| 1287 | }
|
---|
| 1288 | }
|
---|
| 1289 |
|
---|
| 1290 | /* Fall back to first available backend */
|
---|
| 1291 | Curl_ssl = available_backends[0];
|
---|
| 1292 | return 0;
|
---|
| 1293 | }
|
---|
| 1294 |
|
---|
| 1295 | CURLsslset curl_global_sslset(curl_sslbackend id, const char *name,
|
---|
| 1296 | const curl_ssl_backend ***avail)
|
---|
| 1297 | {
|
---|
| 1298 | int i;
|
---|
| 1299 |
|
---|
| 1300 | if(Curl_ssl != &Curl_ssl_multi)
|
---|
| 1301 | return id == Curl_ssl->info.id ? CURLSSLSET_OK : CURLSSLSET_TOO_LATE;
|
---|
| 1302 |
|
---|
| 1303 | for(i = 0; available_backends[i]; i++) {
|
---|
| 1304 | if(available_backends[i]->info.id == id ||
|
---|
| 1305 | (name && strcasecompare(available_backends[i]->info.name, name))) {
|
---|
| 1306 | multissl_init(available_backends[i]);
|
---|
| 1307 | return CURLSSLSET_OK;
|
---|
| 1308 | }
|
---|
| 1309 | }
|
---|
| 1310 |
|
---|
| 1311 | if(avail)
|
---|
| 1312 | *avail = (const curl_ssl_backend **)&available_backends;
|
---|
| 1313 | return CURLSSLSET_UNKNOWN_BACKEND;
|
---|
| 1314 | }
|
---|
| 1315 |
|
---|
| 1316 | #else /* USE_SSL */
|
---|
| 1317 | CURLsslset curl_global_sslset(curl_sslbackend id, const char *name,
|
---|
| 1318 | const curl_ssl_backend ***avail)
|
---|
| 1319 | {
|
---|
| 1320 | (void)id;
|
---|
| 1321 | (void)name;
|
---|
| 1322 | (void)avail;
|
---|
| 1323 | return CURLSSLSET_NO_BACKENDS;
|
---|
| 1324 | }
|
---|
| 1325 |
|
---|
| 1326 | #endif /* !USE_SSL */
|
---|