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/***************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) 1998 - 2003, 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 http://curl.haxx.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.
*
* $Id$
***************************************************************************/
#include "setup.h"
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
#include <curl/curl.h>
#include "urldata.h"
#include "share.h"
/* The last #include file should be: */
#ifdef CURLDEBUG
#include "memdebug.h"
#endif
CURLSH *
curl_share_init(void)
{
struct Curl_share *share =
(struct Curl_share *)malloc(sizeof(struct Curl_share));
if (share) {
memset (share, 0, sizeof(struct Curl_share));
share->specifier |= (1<<CURL_LOCK_DATA_SHARE);
}
return share;
}
CURLSHcode
curl_share_setopt(CURLSH *sh, CURLSHoption option, ...)
{
struct Curl_share *share = (struct Curl_share *)sh;
va_list param;
int type;
curl_lock_function lockfunc;
curl_unlock_function unlockfunc;
void *ptr;
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);
share->specifier |= (1<<type);
switch( type )
{
case CURL_LOCK_DATA_DNS:
if (!share->hostcache) {
share->hostcache = Curl_hash_alloc(7, Curl_freednsinfo);
}
break;
case CURL_LOCK_DATA_COOKIE:
if (!share->cookies) {
share->cookies = Curl_cookie_init( NULL, NULL, TRUE );
}
break;
case CURL_LOCK_DATA_SSL_SESSION:
break;
case CURL_LOCK_DATA_CONNECT:
break;
default:
return CURLSHE_BAD_OPTION;
}
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:
if (share->hostcache) {
Curl_hash_destroy(share->hostcache);
share->hostcache = NULL;
}
break;
case CURL_LOCK_DATA_COOKIE:
if (share->cookies) {
Curl_cookie_cleanup(share->cookies);
share->cookies = NULL;
}
break;
case CURL_LOCK_DATA_SSL_SESSION:
break;
case CURL_LOCK_DATA_CONNECT:
break;
default:
return CURLSHE_BAD_OPTION;
}
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:
return CURLSHE_BAD_OPTION;
}
return CURLSHE_OK;
}
CURLSHcode
curl_share_cleanup(CURLSH *sh)
{
struct Curl_share *share = (struct Curl_share *)sh;
if (share == NULL)
return CURLSHE_INVALID;
share->lockfunc(NULL, CURL_LOCK_DATA_SHARE, CURL_LOCK_ACCESS_SINGLE,
share->clientdata);
if (share->dirty) {
share->unlockfunc(NULL, CURL_LOCK_DATA_SHARE, share->clientdata);
return CURLSHE_IN_USE;
}
if(share->hostcache)
Curl_hash_destroy(share->hostcache);
if(share->cookies)
Curl_cookie_cleanup(share->cookies);
share->unlockfunc(NULL, CURL_LOCK_DATA_SHARE, share->clientdata);
free (share);
return CURLSHE_OK;
}
CURLSHcode
Curl_share_lock(struct SessionHandle *data, curl_lock_data type,
curl_lock_access access)
{
struct Curl_share *share = data->share;
if (share == NULL)
return CURLSHE_INVALID;
if(share->specifier & (1<<type)) {
share->lockfunc(data, type, access, share->clientdata);
}
/* else if we don't share this, pretend successful lock */
return CURLSHE_OK;
}
CURLSHcode
Curl_share_unlock(struct SessionHandle *data, curl_lock_data type)
{
struct Curl_share *share = data->share;
if (share == NULL)
return CURLSHE_INVALID;
if(share->specifier & (1<<type)) {
share->unlockfunc (data, type, share->clientdata);
}
return CURLSHE_OK;
}
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