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/***************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) 1998 - 2022, Daniel Stenberg, <daniel@haxx.se>, et al.
*
* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
* are also available at https://curl.se/docs/copyright.html.
*
* You may opt to use, copy, modify, merge, publish, distribute and/or sell
* copies of the Software, and permit persons to whom the Software is
* furnished to do so, under the terms of the COPYING file.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
* SPDX-License-Identifier: curl
*
***************************************************************************/
#include "curl_setup.h"
#include <curl/curl.h>
#include "urldata.h"
#include "share.h"
#include "psl.h"
#include "vtls/vtls.h"
#include "curl_memory.h"
/* The last #include file should be: */
#include "memdebug.h"
struct Curl_share *
curl_share_init(void)
{
struct Curl_share *share = calloc(1, sizeof(struct Curl_share));
if(share) {
share->magic = CURL_GOOD_SHARE;
share->specifier |= (1<<CURL_LOCK_DATA_SHARE);
Curl_init_dnscache(&share->hostcache);
}
return share;
}
#undef curl_share_setopt
CURLSHcode
curl_share_setopt(struct Curl_share *share, CURLSHoption option, ...)
{
va_list param;
int type;
curl_lock_function lockfunc;
curl_unlock_function unlockfunc;
void *ptr;
CURLSHcode res = CURLSHE_OK;
if(!GOOD_SHARE_HANDLE(share))
return CURLSHE_INVALID;
if(share->dirty)
/* don't allow setting options while one or more handles are already
using this share */
return CURLSHE_IN_USE;
va_start(param, option);
switch(option) {
case CURLSHOPT_SHARE:
/* this is a type this share will share */
type = va_arg(param, int);
switch(type) {
case CURL_LOCK_DATA_DNS:
break;
case CURL_LOCK_DATA_COOKIE:
#if !defined(CURL_DISABLE_HTTP) && !defined(CURL_DISABLE_COOKIES)
if(!share->cookies) {
share->cookies = Curl_cookie_init(NULL, NULL, NULL, TRUE);
if(!share->cookies)
res = CURLSHE_NOMEM;
}
#else /* CURL_DISABLE_HTTP */
res = CURLSHE_NOT_BUILT_IN;
#endif
break;
case CURL_LOCK_DATA_SSL_SESSION:
#ifdef USE_SSL
if(!share->sslsession) {
share->max_ssl_sessions = 8;
share->sslsession = calloc(share->max_ssl_sessions,
sizeof(struct Curl_ssl_session));
share->sessionage = 0;
if(!share->sslsession)
res = CURLSHE_NOMEM;
}
#else
res = CURLSHE_NOT_BUILT_IN;
#endif
break;
case CURL_LOCK_DATA_CONNECT:
if(Curl_conncache_init(&share->conn_cache, 103))
res = CURLSHE_NOMEM;
break;
case CURL_LOCK_DATA_PSL:
#ifndef USE_LIBPSL
res = CURLSHE_NOT_BUILT_IN;
#endif
break;
default:
res = CURLSHE_BAD_OPTION;
}
if(!res)
share->specifier |= (1<<type);
break;
case CURLSHOPT_UNSHARE:
/* this is a type this share will no longer share */
type = va_arg(param, int);
share->specifier &= ~(1<<type);
switch(type) {
case CURL_LOCK_DATA_DNS:
break;
case CURL_LOCK_DATA_COOKIE:
#if !defined(CURL_DISABLE_HTTP) && !defined(CURL_DISABLE_COOKIES)
if(share->cookies) {
Curl_cookie_cleanup(share->cookies);
share->cookies = NULL;
}
#else /* CURL_DISABLE_HTTP */
res = CURLSHE_NOT_BUILT_IN;
#endif
break;
case CURL_LOCK_DATA_SSL_SESSION:
#ifdef USE_SSL
Curl_safefree(share->sslsession);
#else
res = CURLSHE_NOT_BUILT_IN;
#endif
break;
case CURL_LOCK_DATA_CONNECT:
break;
default:
res = CURLSHE_BAD_OPTION;
break;
}
break;
case CURLSHOPT_LOCKFUNC:
lockfunc = va_arg(param, curl_lock_function);
share->lockfunc = lockfunc;
break;
case CURLSHOPT_UNLOCKFUNC:
unlockfunc = va_arg(param, curl_unlock_function);
share->unlockfunc = unlockfunc;
break;
case CURLSHOPT_USERDATA:
ptr = va_arg(param, void *);
share->clientdata = ptr;
break;
default:
res = CURLSHE_BAD_OPTION;
break;
}
va_end(param);
return res;
}
CURLSHcode
curl_share_cleanup(struct Curl_share *share)
{
if(!GOOD_SHARE_HANDLE(share))
return CURLSHE_INVALID;
if(share->lockfunc)
share->lockfunc(NULL, CURL_LOCK_DATA_SHARE, CURL_LOCK_ACCESS_SINGLE,
share->clientdata);
if(share->dirty) {
if(share->unlockfunc)
share->unlockfunc(NULL, CURL_LOCK_DATA_SHARE, share->clientdata);
return CURLSHE_IN_USE;
}
Curl_conncache_close_all_connections(&share->conn_cache);
Curl_conncache_destroy(&share->conn_cache);
Curl_hash_destroy(&share->hostcache);
#if !defined(CURL_DISABLE_HTTP) && !defined(CURL_DISABLE_COOKIES)
Curl_cookie_cleanup(share->cookies);
#endif
#ifdef USE_SSL
if(share->sslsession) {
size_t i;
for(i = 0; i < share->max_ssl_sessions; i++)
Curl_ssl_kill_session(&(share->sslsession[i]));
free(share->sslsession);
}
#endif
Curl_psl_destroy(&share->psl);
if(share->unlockfunc)
share->unlockfunc(NULL, CURL_LOCK_DATA_SHARE, share->clientdata);
share->magic = 0;
free(share);
return CURLSHE_OK;
}
CURLSHcode
Curl_share_lock(struct Curl_easy *data, curl_lock_data type,
curl_lock_access accesstype)
{
struct Curl_share *share = data->share;
if(!share)
return CURLSHE_INVALID;
if(share->specifier & (1<<type)) {
if(share->lockfunc) /* only call this if set! */
share->lockfunc(data, type, accesstype, share->clientdata);
}
/* else if we don't share this, pretend successful lock */
return CURLSHE_OK;
}
CURLSHcode
Curl_share_unlock(struct Curl_easy *data, curl_lock_data type)
{
struct Curl_share *share = data->share;
if(!share)
return CURLSHE_INVALID;
if(share->specifier & (1<<type)) {
if(share->unlockfunc) /* only call this if set! */
share->unlockfunc (data, type, share->clientdata);
}
return CURLSHE_OK;
}
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