1 #ifndef HEADER_CURL_VTLS_H 2 #define HEADER_CURL_VTLS_H 3 /*************************************************************************** 4 * _ _ ____ _ 5 * Project ___| | | | _ \| | 6 * / __| | | | |_) | | 7 * | (__| |_| | _ <| |___ 8 * \___|\___/|_| \_\_____| 9 * 10 * Copyright (C) 1998 - 2019, Daniel Stenberg, <daniel (at) haxx.se>, et al. 11 * 12 * This software is licensed as described in the file COPYING, which 13 * you should have received as part of this distribution. The terms 14 * are also available at https://curl.haxx.se/docs/copyright.html. 15 * 16 * You may opt to use, copy, modify, merge, publish, distribute and/or sell 17 * copies of the Software, and permit persons to whom the Software is 18 * furnished to do so, under the terms of the COPYING file. 19 * 20 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY 21 * KIND, either express or implied. 22 * 23 ***************************************************************************/ 24 #include "curl_setup.h" 25 26 struct connectdata; 27 struct ssl_connect_data; 28 29 #define SSLSUPP_CA_PATH (1<<0) /* supports CAPATH */ 30 #define SSLSUPP_CERTINFO (1<<1) /* supports CURLOPT_CERTINFO */ 31 #define SSLSUPP_PINNEDPUBKEY (1<<2) /* supports CURLOPT_PINNEDPUBLICKEY */ 32 #define SSLSUPP_SSL_CTX (1<<3) /* supports CURLOPT_SSL_CTX */ 33 #define SSLSUPP_HTTPS_PROXY (1<<4) /* supports access via HTTPS proxies */ 34 #define SSLSUPP_TLS13_CIPHERSUITES (1<<5) /* supports TLS 1.3 ciphersuites */ 35 36 struct Curl_ssl { 37 /* 38 * This *must* be the first entry to allow returning the list of available 39 * backends in curl_global_sslset(). 40 */ 41 curl_ssl_backend info; 42 unsigned int supports; /* bitfield, see above */ 43 size_t sizeof_ssl_backend_data; 44 45 int (*init)(void); 46 void (*cleanup)(void); 47 48 size_t (*version)(char *buffer, size_t size); 49 int (*check_cxn)(struct connectdata *cxn); 50 int (*shut_down)(struct connectdata *conn, int sockindex); 51 bool (*data_pending)(const struct connectdata *conn, 52 int connindex); 53 54 /* return 0 if a find random is filled in */ 55 CURLcode (*random)(struct Curl_easy *data, unsigned char *entropy, 56 size_t length); 57 bool (*cert_status_request)(void); 58 59 CURLcode (*connect_blocking)(struct connectdata *conn, int sockindex); 60 CURLcode (*connect_nonblocking)(struct connectdata *conn, int sockindex, 61 bool *done); 62 void *(*get_internals)(struct ssl_connect_data *connssl, CURLINFO info); 63 void (*close_one)(struct connectdata *conn, int sockindex); 64 void (*close_all)(struct Curl_easy *data); 65 void (*session_free)(void *ptr); 66 67 CURLcode (*set_engine)(struct Curl_easy *data, const char *engine); 68 CURLcode (*set_engine_default)(struct Curl_easy *data); 69 struct curl_slist *(*engines_list)(struct Curl_easy *data); 70 71 bool (*false_start)(void); 72 73 CURLcode (*md5sum)(unsigned char *input, size_t inputlen, 74 unsigned char *md5sum, size_t md5sumlen); 75 CURLcode (*sha256sum)(const unsigned char *input, size_t inputlen, 76 unsigned char *sha256sum, size_t sha256sumlen); 77 }; 78 79 #ifdef USE_SSL 80 extern const struct Curl_ssl *Curl_ssl; 81 #endif 82 83 int Curl_none_init(void); 84 void Curl_none_cleanup(void); 85 int Curl_none_shutdown(struct connectdata *conn, int sockindex); 86 int Curl_none_check_cxn(struct connectdata *conn); 87 CURLcode Curl_none_random(struct Curl_easy *data, unsigned char *entropy, 88 size_t length); 89 void Curl_none_close_all(struct Curl_easy *data); 90 void Curl_none_session_free(void *ptr); 91 bool Curl_none_data_pending(const struct connectdata *conn, int connindex); 92 bool Curl_none_cert_status_request(void); 93 CURLcode Curl_none_set_engine(struct Curl_easy *data, const char *engine); 94 CURLcode Curl_none_set_engine_default(struct Curl_easy *data); 95 struct curl_slist *Curl_none_engines_list(struct Curl_easy *data); 96 bool Curl_none_false_start(void); 97 bool Curl_ssl_tls13_ciphersuites(void); 98 CURLcode Curl_none_md5sum(unsigned char *input, size_t inputlen, 99 unsigned char *md5sum, size_t md5len); 100 101 #include "openssl.h" /* OpenSSL versions */ 102 #include "gtls.h" /* GnuTLS versions */ 103 #include "nssg.h" /* NSS versions */ 104 #include "gskit.h" /* Global Secure ToolKit versions */ 105 #include "polarssl.h" /* PolarSSL versions */ 106 #include "cyassl.h" /* CyaSSL versions */ 107 #include "schannel.h" /* Schannel SSPI version */ 108 #include "sectransp.h" /* SecureTransport (Darwin) version */ 109 #include "mbedtls.h" /* mbedTLS versions */ 110 #include "mesalink.h" /* MesaLink versions */ 111 112 #ifndef MAX_PINNED_PUBKEY_SIZE 113 #define MAX_PINNED_PUBKEY_SIZE 1048576 /* 1MB */ 114 #endif 115 116 #ifndef MD5_DIGEST_LENGTH 117 #ifndef LIBWOLFSSL_VERSION_HEX /* because WolfSSL borks this */ 118 #define MD5_DIGEST_LENGTH 16 /* fixed size */ 119 #endif 120 #endif 121 122 #ifndef CURL_SHA256_DIGEST_LENGTH 123 #define CURL_SHA256_DIGEST_LENGTH 32 /* fixed size */ 124 #endif 125 126 /* see https://tools.ietf.org/html/draft-ietf-tls-applayerprotoneg-04 */ 127 #define ALPN_HTTP_1_1_LENGTH 8 128 #define ALPN_HTTP_1_1 "http/1.1" 129 130 /* set of helper macros for the backends to access the correct fields. For the 131 proxy or for the remote host - to properly support HTTPS proxy */ 132 133 #define SSL_IS_PROXY() (CURLPROXY_HTTPS == conn->http_proxy.proxytype && \ 134 ssl_connection_complete != conn->proxy_ssl[conn->sock[SECONDARYSOCKET] == \ 135 CURL_SOCKET_BAD ? FIRSTSOCKET : SECONDARYSOCKET].state) 136 #define SSL_SET_OPTION(var) (SSL_IS_PROXY() ? data->set.proxy_ssl.var : \ 137 data->set.ssl.var) 138 #define SSL_CONN_CONFIG(var) (SSL_IS_PROXY() ? \ 139 conn->proxy_ssl_config.var : conn->ssl_config.var) 140 141 bool Curl_ssl_config_matches(struct ssl_primary_config* data, 142 struct ssl_primary_config* needle); 143 bool Curl_clone_primary_ssl_config(struct ssl_primary_config *source, 144 struct ssl_primary_config *dest); 145 void Curl_free_primary_ssl_config(struct ssl_primary_config* sslc); 146 int Curl_ssl_getsock(struct connectdata *conn, curl_socket_t *socks, 147 int numsocks); 148 149 int Curl_ssl_backend(void); 150 151 #ifdef USE_SSL 152 int Curl_ssl_init(void); 153 void Curl_ssl_cleanup(void); 154 CURLcode Curl_ssl_connect(struct connectdata *conn, int sockindex); 155 CURLcode Curl_ssl_connect_nonblocking(struct connectdata *conn, 156 int sockindex, 157 bool *done); 158 /* tell the SSL stuff to close down all open information regarding 159 connections (and thus session ID caching etc) */ 160 void Curl_ssl_close_all(struct Curl_easy *data); 161 void Curl_ssl_close(struct connectdata *conn, int sockindex); 162 CURLcode Curl_ssl_shutdown(struct connectdata *conn, int sockindex); 163 CURLcode Curl_ssl_set_engine(struct Curl_easy *data, const char *engine); 164 /* Sets engine as default for all SSL operations */ 165 CURLcode Curl_ssl_set_engine_default(struct Curl_easy *data); 166 struct curl_slist *Curl_ssl_engines_list(struct Curl_easy *data); 167 168 /* init the SSL session ID cache */ 169 CURLcode Curl_ssl_initsessions(struct Curl_easy *, size_t); 170 size_t Curl_ssl_version(char *buffer, size_t size); 171 bool Curl_ssl_data_pending(const struct connectdata *conn, 172 int connindex); 173 int Curl_ssl_check_cxn(struct connectdata *conn); 174 175 /* Certificate information list handling. */ 176 177 void Curl_ssl_free_certinfo(struct Curl_easy *data); 178 CURLcode Curl_ssl_init_certinfo(struct Curl_easy *data, int num); 179 CURLcode Curl_ssl_push_certinfo_len(struct Curl_easy *data, int certnum, 180 const char *label, const char *value, 181 size_t valuelen); 182 CURLcode Curl_ssl_push_certinfo(struct Curl_easy *data, int certnum, 183 const char *label, const char *value); 184 185 /* Functions to be used by SSL library adaptation functions */ 186 187 /* Lock session cache mutex. 188 * Call this before calling other Curl_ssl_*session* functions 189 * Caller should unlock this mutex as soon as possible, as it may block 190 * other SSL connection from making progress. 191 * The purpose of explicitly locking SSL session cache data is to allow 192 * individual SSL engines to manage session lifetime in their specific way. 193 */ 194 void Curl_ssl_sessionid_lock(struct connectdata *conn); 195 196 /* Unlock session cache mutex */ 197 void Curl_ssl_sessionid_unlock(struct connectdata *conn); 198 199 /* extract a session ID 200 * Sessionid mutex must be locked (see Curl_ssl_sessionid_lock). 201 * Caller must make sure that the ownership of returned sessionid object 202 * is properly taken (e.g. its refcount is incremented 203 * under sessionid mutex). 204 */ 205 bool Curl_ssl_getsessionid(struct connectdata *conn, 206 void **ssl_sessionid, 207 size_t *idsize, /* set 0 if unknown */ 208 int sockindex); 209 /* add a new session ID 210 * Sessionid mutex must be locked (see Curl_ssl_sessionid_lock). 211 * Caller must ensure that it has properly shared ownership of this sessionid 212 * object with cache (e.g. incrementing refcount on success) 213 */ 214 CURLcode Curl_ssl_addsessionid(struct connectdata *conn, 215 void *ssl_sessionid, 216 size_t idsize, 217 int sockindex); 218 /* Kill a single session ID entry in the cache 219 * Sessionid mutex must be locked (see Curl_ssl_sessionid_lock). 220 * This will call engine-specific curlssl_session_free function, which must 221 * take sessionid object ownership from sessionid cache 222 * (e.g. decrement refcount). 223 */ 224 void Curl_ssl_kill_session(struct curl_ssl_session *session); 225 /* delete a session from the cache 226 * Sessionid mutex must be locked (see Curl_ssl_sessionid_lock). 227 * This will call engine-specific curlssl_session_free function, which must 228 * take sessionid object ownership from sessionid cache 229 * (e.g. decrement refcount). 230 */ 231 void Curl_ssl_delsessionid(struct connectdata *conn, void *ssl_sessionid); 232 233 /* get N random bytes into the buffer */ 234 CURLcode Curl_ssl_random(struct Curl_easy *data, unsigned char *buffer, 235 size_t length); 236 CURLcode Curl_ssl_md5sum(unsigned char *tmp, /* input */ 237 size_t tmplen, 238 unsigned char *md5sum, /* output */ 239 size_t md5len); 240 /* Check pinned public key. */ 241 CURLcode Curl_pin_peer_pubkey(struct Curl_easy *data, 242 const char *pinnedpubkey, 243 const unsigned char *pubkey, size_t pubkeylen); 244 245 bool Curl_ssl_cert_status_request(void); 246 247 bool Curl_ssl_false_start(void); 248 249 #define SSL_SHUTDOWN_TIMEOUT 10000 /* ms */ 250 251 #else /* if not USE_SSL */ 252 253 /* When SSL support is not present, just define away these function calls */ 254 #define Curl_ssl_init() 1 255 #define Curl_ssl_cleanup() Curl_nop_stmt 256 #define Curl_ssl_connect(x,y) CURLE_NOT_BUILT_IN 257 #define Curl_ssl_close_all(x) Curl_nop_stmt 258 #define Curl_ssl_close(x,y) Curl_nop_stmt 259 #define Curl_ssl_shutdown(x,y) CURLE_NOT_BUILT_IN 260 #define Curl_ssl_set_engine(x,y) CURLE_NOT_BUILT_IN 261 #define Curl_ssl_set_engine_default(x) CURLE_NOT_BUILT_IN 262 #define Curl_ssl_engines_list(x) NULL 263 #define Curl_ssl_send(a,b,c,d,e) -1 264 #define Curl_ssl_recv(a,b,c,d,e) -1 265 #define Curl_ssl_initsessions(x,y) CURLE_OK 266 #define Curl_ssl_version(x,y) 0 267 #define Curl_ssl_data_pending(x,y) 0 268 #define Curl_ssl_check_cxn(x) 0 269 #define Curl_ssl_free_certinfo(x) Curl_nop_stmt 270 #define Curl_ssl_connect_nonblocking(x,y,z) CURLE_NOT_BUILT_IN 271 #define Curl_ssl_kill_session(x) Curl_nop_stmt 272 #define Curl_ssl_random(x,y,z) ((void)x, CURLE_NOT_BUILT_IN) 273 #define Curl_ssl_cert_status_request() FALSE 274 #define Curl_ssl_false_start() FALSE 275 #define Curl_ssl_tls13_ciphersuites() FALSE 276 #endif 277 278 #endif /* HEADER_CURL_VTLS_H */ 279
