apps/app_channelredirect.c

   1 /*
   2  * Asterisk -- An open source telephony toolkit.
   3  *
   4  * Copyright (C) 2006, Sergey Basmanov
   5  *
   6  * See http://www.asterisk.org for more information about
   7  * the Asterisk project. Please do not directly contact
   8  * any of the maintainers of this project for assistance;
   9  * the project provides a web site, mailing lists and IRC
  10  * channels for your use.
  11  *
  12  * This program is free software, distributed under the terms of
  13  * the GNU General Public License Version 2. See the LICENSE file
  14  * at the top of the source tree.
  15  */
  16
  17 /*! \file
  18  *
  19  * \brief ChannelRedirect application
  20  *
  21  * \author Sergey Basmanov <sergey_basmanov@mail.ru>
  22  *
  23  * \ingroup applications
  24  */
  25
  26 #include "asterisk.h"
  27
  28 ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
  29
  30 #include <stdio.h>
  31 #include <stdlib.h>
  32 #include <unistd.h>
  33 #include <string.h>
  34
  35 #include "asterisk/file.h"
  36 #include "asterisk/logger.h"
  37 #include "asterisk/channel.h"
  38 #include "asterisk/pbx.h"
  39 #include "asterisk/module.h"
  40 #include "asterisk/lock.h"
  41 #include "asterisk/app.h"
  42 #include "asterisk/features.h"
  43 #include "asterisk/options.h"
  44
  45 static char *app = "ChannelRedirect";
  46 static char *synopsis = "Redirects given channel to a dialplan target.";
  47 static char *descrip =
  48 "ChannelRedirect(channel|[[context|]extension|]priority):\n"
  49 "  Sends the specified channel to the specified extension priority\n";
  50
  51
  52 static int asyncgoto_exec(struct ast_channel *chan, void *data)
  53 {
  54         int res = -1;
  55         struct ast_module_user *u;
  56         char *info, *context, *exten, *priority;
  57         int prio = 1;
  58         struct ast_channel *chan2 = NULL;
  59
  60         AST_DECLARE_APP_ARGS(args,
  61                 AST_APP_ARG(channel);
  62                 AST_APP_ARG(label);
  63         );
  64
  65         if (ast_strlen_zero(data)) {
  66                 ast_log(LOG_WARNING, "%s requires an argument (channel|[[context|]exten|]priority)\n", app);
  67                 return -1;
  68         }
  69
  70         u = ast_module_user_add(chan);
  71
  72         info = ast_strdupa(data);
  73         AST_STANDARD_APP_ARGS(args, info);
  74
  75         if (ast_strlen_zero(args.channel) || ast_strlen_zero(args.label)) {
  76                 ast_log(LOG_WARNING, "%s requires an argument (channel|[[context|]exten|]priority)\n", app);
  77                 goto quit;
  78         }
  79
  80         chan2 = ast_get_channel_by_name_locked(args.channel);
  81         if (!chan2) {
  82                 ast_log(LOG_WARNING, "No such channel: %s\n", args.channel);
  83                 goto quit;
  84         }
  85
  86         /* Parsed right to left, so standard parsing won't work */
  87         context = strsep(&args.label, "|");
  88         exten = strsep(&args.label, "|");
  89         if (exten) {
  90                 priority = strsep(&args.label, "|");
  91                 if (!priority) {
  92                         priority = exten;
  93                         exten = context;
  94                         context = NULL;
  95                 }
  96         } else {
  97                 priority = context;
  98                 context = NULL;
  99         }
 100
 101         /* ast_findlabel_extension does not convert numeric priorities; it only does a lookup */
 102         if (!(prio = atoi(priority)) && !(prio = ast_findlabel_extension(chan2, S_OR(context, chan2->context),
 103                                                                         S_OR(exten, chan2->exten), priority, chan2->cid.cid_num))) {
 104                 ast_log(LOG_WARNING, "'%s' is not a known priority or label\n", priority);
 105                 goto chanquit;
 106         }
 107
 108         if (option_debug > 1)
 109                 ast_log(LOG_DEBUG, "Attempting async goto (%s) to %s|%s|%d\n", args.channel, S_OR(context, chan2->context), S_OR(exten, chan2->exten), prio);
 110
 111         if (ast_async_goto_if_exists(chan2, S_OR(context, chan2->context), S_OR(exten, chan2->exten), prio))
 112                 ast_log(LOG_WARNING, "%s failed for %s\n", app, args.channel);
 113         else
 114                 res = 0;
 115
 116  chanquit:
 117         ast_mutex_unlock(&chan2->lock);
 118  quit:
 119         ast_module_user_remove(u);
 120
 121         return res;
 122 }
 123
 124 static int unload_module(void)
 125 {
 126         int res;
 127
 128         res = ast_unregister_application(app);
 129
 130         ast_module_user_hangup_all();
 131
 132         return res;
 133 }
 134
 135 static int load_module(void)
 136 {
 137         return ast_register_application(app, asyncgoto_exec, synopsis, descrip);
 138 }
 139
 140 AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Channel Redirect");