1 /***************************************************************************
2 * _ _ ____ _
3 * Project ___| | | | _ \| |
4 * / __| | | | |_) | |
5 * | (__| |_| | _ <| |___
6 * \___|\___/|_| \_\_____|
7 *
8 * Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
9 *
10 * This software is licensed as described in the file COPYING, which
11 * you should have received as part of this distribution. The terms
12 * are also available at https://curl.se/docs/copyright.html.
13 *
14 * You may opt to use, copy, modify, merge, publish, distribute and/or sell
15 * copies of the Software, and permit persons to whom the Software is
16 * furnished to do so, under the terms of the COPYING file.
17 *
18 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
19 * KIND, either express or implied.
20 *
21 * SPDX-License-Identifier: curl
22 *
23 ***************************************************************************/
24
25 #include "curl_setup.h"
26
27 #include <curl/curl.h>
28 #include "urldata.h"
29 #include "share.h"
30 #include "psl.h"
31 #include "vtls/vtls.h"
32 #include "hsts.h"
33
34 /* The last 3 #include files should be in this order */
35 #include "curl_printf.h"
36 #include "curl_memory.h"
37 #include "memdebug.h"
38
39 struct Curl_share *
curl_share_init(void)40 curl_share_init(void)
41 {
42 struct Curl_share *share = calloc(1, sizeof(struct Curl_share));
43 if(share) {
44 share->magic = CURL_GOOD_SHARE;
45 share->specifier |= (1<<CURL_LOCK_DATA_SHARE);
46 Curl_init_dnscache(&share->hostcache, 23);
47 }
48
49 return share;
50 }
51
52 #undef curl_share_setopt
53 CURLSHcode
curl_share_setopt(struct Curl_share * share,CURLSHoption option,...)54 curl_share_setopt(struct Curl_share *share, CURLSHoption option, ...)
55 {
56 va_list param;
57 int type;
58 curl_lock_function lockfunc;
59 curl_unlock_function unlockfunc;
60 void *ptr;
61 CURLSHcode res = CURLSHE_OK;
62
63 if(!GOOD_SHARE_HANDLE(share))
64 return CURLSHE_INVALID;
65
66 if(share->dirty)
67 /* don't allow setting options while one or more handles are already
68 using this share */
69 return CURLSHE_IN_USE;
70
71 va_start(param, option);
72
73 switch(option) {
74 case CURLSHOPT_SHARE:
75 /* this is a type this share will share */
76 type = va_arg(param, int);
77
78 switch(type) {
79 case CURL_LOCK_DATA_DNS:
80 break;
81
82 case CURL_LOCK_DATA_COOKIE:
83 #if !defined(CURL_DISABLE_HTTP) && !defined(CURL_DISABLE_COOKIES)
84 if(!share->cookies) {
85 share->cookies = Curl_cookie_init(NULL, NULL, NULL, TRUE);
86 if(!share->cookies)
87 res = CURLSHE_NOMEM;
88 }
89 #else /* CURL_DISABLE_HTTP */
90 res = CURLSHE_NOT_BUILT_IN;
91 #endif
92 break;
93
94 case CURL_LOCK_DATA_HSTS:
95 #ifndef CURL_DISABLE_HSTS
96 if(!share->hsts) {
97 share->hsts = Curl_hsts_init();
98 if(!share->hsts)
99 res = CURLSHE_NOMEM;
100 }
101 #else /* CURL_DISABLE_HSTS */
102 res = CURLSHE_NOT_BUILT_IN;
103 #endif
104 break;
105
106 case CURL_LOCK_DATA_SSL_SESSION:
107 #ifdef USE_SSL
108 if(!share->sslsession) {
109 share->max_ssl_sessions = 8;
110 share->sslsession = calloc(share->max_ssl_sessions,
111 sizeof(struct Curl_ssl_session));
112 share->sessionage = 0;
113 if(!share->sslsession)
114 res = CURLSHE_NOMEM;
115 }
116 #else
117 res = CURLSHE_NOT_BUILT_IN;
118 #endif
119 break;
120
121 case CURL_LOCK_DATA_CONNECT:
122 if(Curl_conncache_init(&share->conn_cache, 103))
123 res = CURLSHE_NOMEM;
124 break;
125
126 case CURL_LOCK_DATA_PSL:
127 #ifndef USE_LIBPSL
128 res = CURLSHE_NOT_BUILT_IN;
129 #endif
130 break;
131
132 default:
133 res = CURLSHE_BAD_OPTION;
134 }
135 if(!res)
136 share->specifier |= (unsigned int)(1<<type);
137 break;
138
139 case CURLSHOPT_UNSHARE:
140 /* this is a type this share will no longer share */
141 type = va_arg(param, int);
142 share->specifier &= ~(unsigned int)(1<<type);
143 switch(type) {
144 case CURL_LOCK_DATA_DNS:
145 break;
146
147 case CURL_LOCK_DATA_COOKIE:
148 #if !defined(CURL_DISABLE_HTTP) && !defined(CURL_DISABLE_COOKIES)
149 if(share->cookies) {
150 Curl_cookie_cleanup(share->cookies);
151 share->cookies = NULL;
152 }
153 #else /* CURL_DISABLE_HTTP */
154 res = CURLSHE_NOT_BUILT_IN;
155 #endif
156 break;
157
158 case CURL_LOCK_DATA_HSTS:
159 #ifndef CURL_DISABLE_HSTS
160 if(share->hsts) {
161 Curl_hsts_cleanup(&share->hsts);
162 }
163 #else /* CURL_DISABLE_HSTS */
164 res = CURLSHE_NOT_BUILT_IN;
165 #endif
166 break;
167
168 case CURL_LOCK_DATA_SSL_SESSION:
169 #ifdef USE_SSL
170 Curl_safefree(share->sslsession);
171 #else
172 res = CURLSHE_NOT_BUILT_IN;
173 #endif
174 break;
175
176 case CURL_LOCK_DATA_CONNECT:
177 break;
178
179 default:
180 res = CURLSHE_BAD_OPTION;
181 break;
182 }
183 break;
184
185 case CURLSHOPT_LOCKFUNC:
186 lockfunc = va_arg(param, curl_lock_function);
187 share->lockfunc = lockfunc;
188 break;
189
190 case CURLSHOPT_UNLOCKFUNC:
191 unlockfunc = va_arg(param, curl_unlock_function);
192 share->unlockfunc = unlockfunc;
193 break;
194
195 case CURLSHOPT_USERDATA:
196 ptr = va_arg(param, void *);
197 share->clientdata = ptr;
198 break;
199
200 default:
201 res = CURLSHE_BAD_OPTION;
202 break;
203 }
204
205 va_end(param);
206
207 return res;
208 }
209
210 CURLSHcode
curl_share_cleanup(struct Curl_share * share)211 curl_share_cleanup(struct Curl_share *share)
212 {
213 if(!GOOD_SHARE_HANDLE(share))
214 return CURLSHE_INVALID;
215
216 if(share->lockfunc)
217 share->lockfunc(NULL, CURL_LOCK_DATA_SHARE, CURL_LOCK_ACCESS_SINGLE,
218 share->clientdata);
219
220 if(share->dirty) {
221 if(share->unlockfunc)
222 share->unlockfunc(NULL, CURL_LOCK_DATA_SHARE, share->clientdata);
223 return CURLSHE_IN_USE;
224 }
225
226 Curl_conncache_close_all_connections(&share->conn_cache);
227 Curl_conncache_destroy(&share->conn_cache);
228 Curl_hash_destroy(&share->hostcache);
229
230 #if !defined(CURL_DISABLE_HTTP) && !defined(CURL_DISABLE_COOKIES)
231 Curl_cookie_cleanup(share->cookies);
232 #endif
233
234 #ifndef CURL_DISABLE_HSTS
235 Curl_hsts_cleanup(&share->hsts);
236 #endif
237
238 #ifdef USE_SSL
239 if(share->sslsession) {
240 size_t i;
241 for(i = 0; i < share->max_ssl_sessions; i++)
242 Curl_ssl_kill_session(&(share->sslsession[i]));
243 free(share->sslsession);
244 }
245 #endif
246
247 Curl_psl_destroy(&share->psl);
248
249 if(share->unlockfunc)
250 share->unlockfunc(NULL, CURL_LOCK_DATA_SHARE, share->clientdata);
251 share->magic = 0;
252 free(share);
253
254 return CURLSHE_OK;
255 }
256
257
258 CURLSHcode
Curl_share_lock(struct Curl_easy * data,curl_lock_data type,curl_lock_access accesstype)259 Curl_share_lock(struct Curl_easy *data, curl_lock_data type,
260 curl_lock_access accesstype)
261 {
262 struct Curl_share *share = data->share;
263
264 if(!share)
265 return CURLSHE_INVALID;
266
267 if(share->specifier & (unsigned int)(1<<type)) {
268 if(share->lockfunc) /* only call this if set! */
269 share->lockfunc(data, type, accesstype, share->clientdata);
270 }
271 /* else if we don't share this, pretend successful lock */
272
273 return CURLSHE_OK;
274 }
275
276 CURLSHcode
Curl_share_unlock(struct Curl_easy * data,curl_lock_data type)277 Curl_share_unlock(struct Curl_easy *data, curl_lock_data type)
278 {
279 struct Curl_share *share = data->share;
280
281 if(!share)
282 return CURLSHE_INVALID;
283
284 if(share->specifier & (unsigned int)(1<<type)) {
285 if(share->unlockfunc) /* only call this if set! */
286 share->unlockfunc (data, type, share->clientdata);
287 }
288
289 return CURLSHE_OK;
290 }
291
