1 #ifndef HEADER_CURL_VTLS_H
2 #define HEADER_CURL_VTLS_H
3 /***************************************************************************
5 * Project ___| | | | _ \| |
7 * | (__| |_| | _ <| |___
8 * \___|\___/|_| \_\_____|
10 * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al.
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.
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.
20 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
21 * KIND, either express or implied.
23 ***************************************************************************/
24 #include "curl_setup.h"
27 struct ssl_connect_data;
31 * This *must* be the first entry to allow returning the list of available
32 * backends in curl_global_sslset().
34 curl_ssl_backend info;
36 unsigned have_ca_path:1; /* supports CAPATH */
37 unsigned have_certinfo:1; /* supports CURLOPT_CERTINFO */
38 unsigned have_pinnedpubkey:1; /* supports CURLOPT_PINNEDPUBLICKEY */
39 unsigned have_ssl_ctx:1; /* supports CURLOPT_SSL_CTX_* */
41 unsigned support_https_proxy:1; /* supports access via HTTPS proxies */
43 size_t sizeof_ssl_backend_data;
46 void (*cleanup)(void);
48 size_t (*version)(char *buffer, size_t size);
49 int (*check_cxn)(struct connectdata *cxn);
50 int (*shutdown)(struct connectdata *conn, int sockindex);
51 bool (*data_pending)(const struct connectdata *conn,
54 /* return 0 if a find random is filled in */
55 CURLcode (*random)(struct Curl_easy *data, unsigned char *entropy,
57 bool (*cert_status_request)(void);
59 CURLcode (*connect)(struct connectdata *conn, int sockindex);
60 CURLcode (*connect_nonblocking)(struct connectdata *conn, int sockindex,
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);
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);
71 bool (*false_start)(void);
73 CURLcode (*md5sum)(unsigned char *input, size_t inputlen,
74 unsigned char *md5sum, size_t md5sumlen);
75 void (*sha256sum)(const unsigned char *input, size_t inputlen,
76 unsigned char *sha256sum, size_t sha256sumlen);
80 extern const struct Curl_ssl *Curl_ssl;
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,
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 CURLcode Curl_none_md5sum(unsigned char *input, size_t inputlen,
98 unsigned char *md5sum, size_t md5len);
100 #include "openssl.h" /* OpenSSL versions */
101 #include "gtls.h" /* GnuTLS versions */
102 #include "nssg.h" /* NSS versions */
103 #include "gskit.h" /* Global Secure ToolKit versions */
104 #include "polarssl.h" /* PolarSSL versions */
105 #include "axtls.h" /* axTLS versions */
106 #include "cyassl.h" /* CyaSSL versions */
107 #include "schannel.h" /* Schannel SSPI version */
108 #include "darwinssl.h" /* SecureTransport (Darwin) version */
109 #include "mbedtls.h" /* mbedTLS versions */
111 #ifndef MAX_PINNED_PUBKEY_SIZE
112 #define MAX_PINNED_PUBKEY_SIZE 1048576 /* 1MB */
115 #ifndef MD5_DIGEST_LENGTH
116 #define MD5_DIGEST_LENGTH 16 /* fixed size */
119 #ifndef CURL_SHA256_DIGEST_LENGTH
120 #define CURL_SHA256_DIGEST_LENGTH 32 /* fixed size */
123 /* see https://tools.ietf.org/html/draft-ietf-tls-applayerprotoneg-04 */
124 #define ALPN_HTTP_1_1_LENGTH 8
125 #define ALPN_HTTP_1_1 "http/1.1"
127 /* set of helper macros for the backends to access the correct fields. For the
128 proxy or for the remote host - to properly support HTTPS proxy */
130 #define SSL_IS_PROXY() (CURLPROXY_HTTPS == conn->http_proxy.proxytype && \
131 ssl_connection_complete != conn->proxy_ssl[conn->sock[SECONDARYSOCKET] == \
132 CURL_SOCKET_BAD ? FIRSTSOCKET : SECONDARYSOCKET].state)
133 #define SSL_SET_OPTION(var) (SSL_IS_PROXY() ? data->set.proxy_ssl.var : \
135 #define SSL_CONN_CONFIG(var) (SSL_IS_PROXY() ? \
136 conn->proxy_ssl_config.var : conn->ssl_config.var)
138 bool Curl_ssl_config_matches(struct ssl_primary_config* data,
139 struct ssl_primary_config* needle);
140 bool Curl_clone_primary_ssl_config(struct ssl_primary_config *source,
141 struct ssl_primary_config *dest);
142 void Curl_free_primary_ssl_config(struct ssl_primary_config* sslc);
143 int Curl_ssl_getsock(struct connectdata *conn, curl_socket_t *socks,
146 int Curl_ssl_backend(void);
149 int Curl_ssl_init(void);
150 void Curl_ssl_cleanup(void);
151 CURLcode Curl_ssl_connect(struct connectdata *conn, int sockindex);
152 CURLcode Curl_ssl_connect_nonblocking(struct connectdata *conn,
155 /* tell the SSL stuff to close down all open information regarding
156 connections (and thus session ID caching etc) */
157 void Curl_ssl_close_all(struct Curl_easy *data);
158 void Curl_ssl_close(struct connectdata *conn, int sockindex);
159 CURLcode Curl_ssl_shutdown(struct connectdata *conn, int sockindex);
160 CURLcode Curl_ssl_set_engine(struct Curl_easy *data, const char *engine);
161 /* Sets engine as default for all SSL operations */
162 CURLcode Curl_ssl_set_engine_default(struct Curl_easy *data);
163 struct curl_slist *Curl_ssl_engines_list(struct Curl_easy *data);
165 /* init the SSL session ID cache */
166 CURLcode Curl_ssl_initsessions(struct Curl_easy *, size_t);
167 size_t Curl_ssl_version(char *buffer, size_t size);
168 bool Curl_ssl_data_pending(const struct connectdata *conn,
170 int Curl_ssl_check_cxn(struct connectdata *conn);
172 /* Certificate information list handling. */
174 void Curl_ssl_free_certinfo(struct Curl_easy *data);
175 CURLcode Curl_ssl_init_certinfo(struct Curl_easy *data, int num);
176 CURLcode Curl_ssl_push_certinfo_len(struct Curl_easy *data, int certnum,
177 const char *label, const char *value,
179 CURLcode Curl_ssl_push_certinfo(struct Curl_easy *data, int certnum,
180 const char *label, const char *value);
182 /* Functions to be used by SSL library adaptation functions */
184 /* Lock session cache mutex.
185 * Call this before calling other Curl_ssl_*session* functions
186 * Caller should unlock this mutex as soon as possible, as it may block
187 * other SSL connection from making progress.
188 * The purpose of explicitly locking SSL session cache data is to allow
189 * individual SSL engines to manage session lifetime in their specific way.
191 void Curl_ssl_sessionid_lock(struct connectdata *conn);
193 /* Unlock session cache mutex */
194 void Curl_ssl_sessionid_unlock(struct connectdata *conn);
196 /* extract a session ID
197 * Sessionid mutex must be locked (see Curl_ssl_sessionid_lock).
198 * Caller must make sure that the ownership of returned sessionid object
199 * is properly taken (e.g. its refcount is incremented
200 * under sessionid mutex).
202 bool Curl_ssl_getsessionid(struct connectdata *conn,
203 void **ssl_sessionid,
204 size_t *idsize, /* set 0 if unknown */
206 /* add a new session ID
207 * Sessionid mutex must be locked (see Curl_ssl_sessionid_lock).
208 * Caller must ensure that it has properly shared ownership of this sessionid
209 * object with cache (e.g. incrementing refcount on success)
211 CURLcode Curl_ssl_addsessionid(struct connectdata *conn,
215 /* Kill a single session ID entry in the cache
216 * Sessionid mutex must be locked (see Curl_ssl_sessionid_lock).
217 * This will call engine-specific curlssl_session_free function, which must
218 * take sessionid object ownership from sessionid cache
219 * (e.g. decrement refcount).
221 void Curl_ssl_kill_session(struct curl_ssl_session *session);
222 /* delete a session from the cache
223 * Sessionid mutex must be locked (see Curl_ssl_sessionid_lock).
224 * This will call engine-specific curlssl_session_free function, which must
225 * take sessionid object ownership from sessionid cache
226 * (e.g. decrement refcount).
228 void Curl_ssl_delsessionid(struct connectdata *conn, void *ssl_sessionid);
230 /* get N random bytes into the buffer */
231 CURLcode Curl_ssl_random(struct Curl_easy *data, unsigned char *buffer,
233 CURLcode Curl_ssl_md5sum(unsigned char *tmp, /* input */
235 unsigned char *md5sum, /* output */
237 /* Check pinned public key. */
238 CURLcode Curl_pin_peer_pubkey(struct Curl_easy *data,
239 const char *pinnedpubkey,
240 const unsigned char *pubkey, size_t pubkeylen);
242 bool Curl_ssl_cert_status_request(void);
244 bool Curl_ssl_false_start(void);
246 #define SSL_SHUTDOWN_TIMEOUT 10000 /* ms */
250 /* When SSL support is not present, just define away these function calls */
251 #define Curl_ssl_init() 1
252 #define Curl_ssl_cleanup() Curl_nop_stmt
253 #define Curl_ssl_connect(x,y) CURLE_NOT_BUILT_IN
254 #define Curl_ssl_close_all(x) Curl_nop_stmt
255 #define Curl_ssl_close(x,y) Curl_nop_stmt
256 #define Curl_ssl_shutdown(x,y) CURLE_NOT_BUILT_IN
257 #define Curl_ssl_set_engine(x,y) CURLE_NOT_BUILT_IN
258 #define Curl_ssl_set_engine_default(x) CURLE_NOT_BUILT_IN
259 #define Curl_ssl_engines_list(x) NULL
260 #define Curl_ssl_send(a,b,c,d,e) -1
261 #define Curl_ssl_recv(a,b,c,d,e) -1
262 #define Curl_ssl_initsessions(x,y) CURLE_OK
263 #define Curl_ssl_version(x,y) 0
264 #define Curl_ssl_data_pending(x,y) 0
265 #define Curl_ssl_check_cxn(x) 0
266 #define Curl_ssl_free_certinfo(x) Curl_nop_stmt
267 #define Curl_ssl_connect_nonblocking(x,y,z) CURLE_NOT_BUILT_IN
268 #define Curl_ssl_kill_session(x) Curl_nop_stmt
269 #define Curl_ssl_random(x,y,z) ((void)x, CURLE_NOT_BUILT_IN)
270 #define Curl_ssl_cert_status_request() FALSE
271 #define Curl_ssl_false_start() FALSE
274 #endif /* HEADER_CURL_VTLS_H */