res/res_curl.c

   1 /*
   2  * Asterisk -- An open source telephony toolkit.
   3  *
   4  * Copyright (c) 2008, Digium, Inc.
   5  *
   6  * Tilghman Lesher <res_curl_v1@the-tilghman.com>
   7  *
   8  * See http://www.asterisk.org for more information about
   9  * the Asterisk project. Please do not directly contact
  10  * any of the maintainers of this project for assistance;
  11  * the project provides a web site, mailing lists and IRC
  12  * channels for your use.
  13  *
  14  * This program is free software, distributed under the terms of
  15  * the GNU General Public License Version 2. See the LICENSE file
  16  * at the top of the source tree.
  17  */
  18
  19 /*! \file
  20  *
  21  * \brief curl resource engine
  22  *
  23  * \author Tilghman Lesher <res_curl_v1@the-tilghman.com>
  24  *
  25  * \extref Depends on the CURL library  - http://curl.haxx.se/
  26  *
  27  */
  28
  29 /*** MODULEINFO
  30         <depend>curl</depend>
  31  ***/
  32
  33 #include "asterisk.h"
  34
  35 ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
  36
  37 #include <curl/curl.h>
  38
  39 #include "asterisk/module.h"
  40
  41 static int unload_module(void)
  42 {
  43         int res = 0;
  44
  45         /* If the dependent modules are still in memory, forbid unload */
  46         if (ast_module_check("func_curl.so")) {
  47                 ast_log(LOG_ERROR, "func_curl.so (dependent module) is still loaded.  Cannot unload res_curl.so\n");
  48                 return -1;
  49         }
  50
  51         if (ast_module_check("res_config_curl.so")) {
  52                 ast_log(LOG_ERROR, "res_config_curl.so (dependent module) is still loaded.  Cannot unload res_curl.so\n");
  53                 return -1;
  54         }
  55
  56         curl_global_cleanup();
  57
  58         return res;
  59 }
  60
  61 static int load_module(void)
  62 {
  63         int res = 0;
  64
  65         if (curl_global_init(CURL_GLOBAL_ALL)) {
  66                 ast_log(LOG_ERROR, "Unable to initialize the CURL library. Cannot load res_curl\n");
  67                 return AST_MODULE_LOAD_DECLINE;
  68         }
  69
  70         return res;
  71 }
  72
  73 AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "cURL Resource Module");
  74
  75