[331] | 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 | #include "curl_setup.h"
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| 24 |
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| 25 | #include <curl/curl.h>
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| 26 | #include "urldata.h"
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| 27 | #include "share.h"
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| 28 | #include "vtls/vtls.h"
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| 29 | #include "curl_memory.h"
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| 30 |
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| 31 | /* The last #include file should be: */
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| 32 | #include "memdebug.h"
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| 33 |
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| 34 | struct Curl_share *
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| 35 | curl_share_init(void)
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| 36 | {
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| 37 | struct Curl_share *share = calloc(1, sizeof(struct Curl_share));
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| 38 | if(share) {
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| 39 | share->specifier |= (1<<CURL_LOCK_DATA_SHARE);
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| 40 |
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| 41 | if(Curl_mk_dnscache(&share->hostcache)) {
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| 42 | free(share);
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| 43 | return NULL;
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| 44 | }
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| 45 | }
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| 46 |
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| 47 | return share;
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| 48 | }
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| 49 |
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| 50 | #undef curl_share_setopt
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| 51 | CURLSHcode
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| 52 | curl_share_setopt(struct Curl_share *share, CURLSHoption option, ...)
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| 53 | {
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| 54 | va_list param;
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| 55 | int type;
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| 56 | curl_lock_function lockfunc;
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| 57 | curl_unlock_function unlockfunc;
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| 58 | void *ptr;
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| 59 | CURLSHcode res = CURLSHE_OK;
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| 60 |
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| 61 | if(share->dirty)
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| 62 | /* don't allow setting options while one or more handles are already
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| 63 | using this share */
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| 64 | return CURLSHE_IN_USE;
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| 65 |
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| 66 | va_start(param, option);
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| 67 |
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| 68 | switch(option) {
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| 69 | case CURLSHOPT_SHARE:
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| 70 | /* this is a type this share will share */
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| 71 | type = va_arg(param, int);
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| 72 | share->specifier |= (1<<type);
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| 73 | switch(type) {
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| 74 | case CURL_LOCK_DATA_DNS:
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| 75 | break;
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| 76 |
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| 77 | case CURL_LOCK_DATA_COOKIE:
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| 78 | #if !defined(CURL_DISABLE_HTTP) && !defined(CURL_DISABLE_COOKIES)
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| 79 | if(!share->cookies) {
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| 80 | share->cookies = Curl_cookie_init(NULL, NULL, NULL, TRUE);
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| 81 | if(!share->cookies)
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| 82 | res = CURLSHE_NOMEM;
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| 83 | }
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| 84 | #else /* CURL_DISABLE_HTTP */
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| 85 | res = CURLSHE_NOT_BUILT_IN;
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| 86 | #endif
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| 87 | break;
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| 88 |
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| 89 | case CURL_LOCK_DATA_SSL_SESSION:
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| 90 | #ifdef USE_SSL
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| 91 | if(!share->sslsession) {
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| 92 | share->max_ssl_sessions = 8;
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| 93 | share->sslsession = calloc(share->max_ssl_sessions,
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| 94 | sizeof(struct curl_ssl_session));
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| 95 | share->sessionage = 0;
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| 96 | if(!share->sslsession)
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| 97 | res = CURLSHE_NOMEM;
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| 98 | }
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| 99 | #else
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| 100 | res = CURLSHE_NOT_BUILT_IN;
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| 101 | #endif
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| 102 | break;
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| 103 |
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| 104 | case CURL_LOCK_DATA_CONNECT: /* not supported (yet) */
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| 105 | if(Curl_conncache_init(&share->conn_cache, 103))
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| 106 | res = CURLSHE_NOMEM;
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| 107 | break;
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| 108 |
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| 109 | default:
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| 110 | res = CURLSHE_BAD_OPTION;
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| 111 | }
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| 112 | break;
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| 113 |
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| 114 | case CURLSHOPT_UNSHARE:
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| 115 | /* this is a type this share will no longer share */
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| 116 | type = va_arg(param, int);
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| 117 | share->specifier &= ~(1<<type);
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| 118 | switch(type) {
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| 119 | case CURL_LOCK_DATA_DNS:
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| 120 | break;
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| 121 |
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| 122 | case CURL_LOCK_DATA_COOKIE:
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| 123 | #if !defined(CURL_DISABLE_HTTP) && !defined(CURL_DISABLE_COOKIES)
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| 124 | if(share->cookies) {
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| 125 | Curl_cookie_cleanup(share->cookies);
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| 126 | share->cookies = NULL;
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| 127 | }
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| 128 | #else /* CURL_DISABLE_HTTP */
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| 129 | res = CURLSHE_NOT_BUILT_IN;
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| 130 | #endif
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| 131 | break;
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| 132 |
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| 133 | case CURL_LOCK_DATA_SSL_SESSION:
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| 134 | #ifdef USE_SSL
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| 135 | Curl_safefree(share->sslsession);
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| 136 | #else
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| 137 | res = CURLSHE_NOT_BUILT_IN;
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| 138 | #endif
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| 139 | break;
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| 140 |
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| 141 | case CURL_LOCK_DATA_CONNECT:
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| 142 | break;
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| 143 |
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| 144 | default:
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| 145 | res = CURLSHE_BAD_OPTION;
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| 146 | break;
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| 147 | }
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| 148 | break;
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| 149 |
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| 150 | case CURLSHOPT_LOCKFUNC:
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| 151 | lockfunc = va_arg(param, curl_lock_function);
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| 152 | share->lockfunc = lockfunc;
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| 153 | break;
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| 154 |
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| 155 | case CURLSHOPT_UNLOCKFUNC:
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| 156 | unlockfunc = va_arg(param, curl_unlock_function);
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| 157 | share->unlockfunc = unlockfunc;
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| 158 | break;
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| 159 |
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| 160 | case CURLSHOPT_USERDATA:
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| 161 | ptr = va_arg(param, void *);
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| 162 | share->clientdata = ptr;
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| 163 | break;
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| 164 |
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| 165 | default:
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| 166 | res = CURLSHE_BAD_OPTION;
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| 167 | break;
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| 168 | }
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| 169 |
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| 170 | va_end(param);
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| 171 |
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| 172 | return res;
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| 173 | }
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| 174 |
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| 175 | CURLSHcode
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| 176 | curl_share_cleanup(struct Curl_share *share)
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| 177 | {
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| 178 | if(share == NULL)
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| 179 | return CURLSHE_INVALID;
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| 180 |
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| 181 | if(share->lockfunc)
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| 182 | share->lockfunc(NULL, CURL_LOCK_DATA_SHARE, CURL_LOCK_ACCESS_SINGLE,
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| 183 | share->clientdata);
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| 184 |
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| 185 | if(share->dirty) {
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| 186 | if(share->unlockfunc)
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| 187 | share->unlockfunc(NULL, CURL_LOCK_DATA_SHARE, share->clientdata);
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| 188 | return CURLSHE_IN_USE;
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| 189 | }
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| 190 |
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| 191 | Curl_conncache_close_all_connections(&share->conn_cache);
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| 192 | Curl_conncache_destroy(&share->conn_cache);
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| 193 | Curl_hash_destroy(&share->hostcache);
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| 194 |
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| 195 | #if !defined(CURL_DISABLE_HTTP) && !defined(CURL_DISABLE_COOKIES)
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| 196 | Curl_cookie_cleanup(share->cookies);
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| 197 | #endif
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| 198 |
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| 199 | #ifdef USE_SSL
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| 200 | if(share->sslsession) {
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| 201 | size_t i;
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| 202 | for(i = 0; i < share->max_ssl_sessions; i++)
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| 203 | Curl_ssl_kill_session(&(share->sslsession[i]));
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| 204 | free(share->sslsession);
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| 205 | }
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| 206 | #endif
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| 207 |
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| 208 | if(share->unlockfunc)
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| 209 | share->unlockfunc(NULL, CURL_LOCK_DATA_SHARE, share->clientdata);
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| 210 | free(share);
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| 211 |
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| 212 | return CURLSHE_OK;
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| 213 | }
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| 214 |
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| 215 |
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| 216 | CURLSHcode
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| 217 | Curl_share_lock(struct Curl_easy *data, curl_lock_data type,
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| 218 | curl_lock_access accesstype)
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| 219 | {
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| 220 | struct Curl_share *share = data->share;
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| 221 |
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| 222 | if(share == NULL)
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| 223 | return CURLSHE_INVALID;
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| 224 |
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| 225 | if(share->specifier & (1<<type)) {
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| 226 | if(share->lockfunc) /* only call this if set! */
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| 227 | share->lockfunc(data, type, accesstype, share->clientdata);
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| 228 | }
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| 229 | /* else if we don't share this, pretend successful lock */
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| 230 |
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| 231 | return CURLSHE_OK;
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| 232 | }
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| 233 |
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| 234 | CURLSHcode
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| 235 | Curl_share_unlock(struct Curl_easy *data, curl_lock_data type)
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| 236 | {
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| 237 | struct Curl_share *share = data->share;
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| 238 |
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| 239 | if(share == NULL)
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| 240 | return CURLSHE_INVALID;
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| 241 |
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| 242 | if(share->specifier & (1<<type)) {
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| 243 | if(share->unlockfunc) /* only call this if set! */
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| 244 | share->unlockfunc (data, type, share->clientdata);
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| 245 | }
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| 246 |
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| 247 | return CURLSHE_OK;
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| 248 | }
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