funcs/func_blacklist.c

   1 /*
   2  * Asterisk -- An open source telephony toolkit.
   3  *
   4  * Copyright (C) 1999 - 2005, Digium, Inc.
   5  *
   6  * Mark Spencer <markster@digium.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 Function to lookup the callerid number, and see if it is blacklisted
  22  *
  23  * \author Mark Spencer <markster@digium.com>
  24  *
  25  * \ingroup functions
  26  *
  27  */
  28
  29 #include "asterisk.h"
  30
  31 ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
  32
  33 #include "asterisk/pbx.h"
  34 #include "asterisk/module.h"
  35 #include "asterisk/channel.h"
  36 #include "asterisk/astdb.h"
  37
  38 static int blacklist_read(struct ast_channel *chan, const char *cmd, char *data, char *buf, size_t len)
  39 {
  40         char blacklist[1];
  41         int bl = 0;
  42
  43         if (chan->cid.cid_num) {
  44                 if (!ast_db_get("blacklist", chan->cid.cid_num, blacklist, sizeof (blacklist)))
  45                         bl = 1;
  46         }
  47         if (chan->cid.cid_name) {
  48                 if (!ast_db_get("blacklist", chan->cid.cid_name, blacklist, sizeof (blacklist)))
  49                         bl = 1;
  50         }
  51
  52         snprintf(buf, len, "%d", bl);
  53         return 0;
  54 }
  55
  56 static struct ast_custom_function blacklist_function = {
  57         .name = "BLACKLIST",
  58         .synopsis = "Check if the callerid is on the blacklist",
  59         .desc = "Uses astdb to check if the Caller*ID is in family 'blacklist'.  Returns 1 or 0.\n",
  60         .syntax = "BLACKLIST()",
  61         .read = blacklist_read,
  62 };
  63
  64 static int unload_module(void)
  65 {
  66         return ast_custom_function_unregister(&blacklist_function);
  67 }
  68
  69 static int load_module(void)
  70 {
  71         return ast_custom_function_register(&blacklist_function);
  72 }
  73
  74 AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Look up Caller*ID name/number from blacklist database");