apps/app_senddtmf.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 App to send DTMF digits
  22  *
  23  * \author Mark Spencer <markster@digium.com>
  24  *
  25  * \ingroup applications
  26  */
  27
  28 #include "asterisk.h"
  29
  30 ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
  31
  32 #include "asterisk/pbx.h"
  33 #include "asterisk/module.h"
  34 #include "asterisk/app.h"
  35 #include "asterisk/manager.h"
  36 #include "asterisk/channel.h"
  37
  38 static char *app = "SendDTMF";
  39
  40 static char *synopsis = "Sends arbitrary DTMF digits";
  41
  42 static char *descrip =
  43 " SendDTMF(digits[,timeout_ms]): Sends DTMF digits on a channel. \n"
  44 " Accepted digits: 0-9, *#abcd, w (.5s pause)\n"
  45 " The application will either pass the assigned digits or terminate if it\n"
  46 " encounters an error.\n";
  47
  48
  49 static int senddtmf_exec(struct ast_channel *chan, void *vdata)
  50 {
  51         int res = 0;
  52         char *data;
  53         int timeout = 0, duration = 0;
  54         AST_DECLARE_APP_ARGS(args,
  55                 AST_APP_ARG(digits);
  56                 AST_APP_ARG(timeout);
  57                 AST_APP_ARG(duration);
  58         );
  59
  60         if (ast_strlen_zero(vdata)) {
  61                 ast_log(LOG_WARNING, "SendDTMF requires an argument (digits or *#aAbBcCdD)\n");
  62                 return 0;
  63         }
  64
  65         data = ast_strdupa(vdata);
  66         AST_STANDARD_APP_ARGS(args, data);
  67
  68         if (!ast_strlen_zero(args.timeout))
  69                 timeout = atoi(args.timeout);
  70         if (!ast_strlen_zero(args.duration))
  71                 duration = atoi(args.duration);
  72         res = ast_dtmf_stream(chan, NULL, args.digits, timeout <= 0 ? 250 : timeout, duration);
  73
  74         return res;
  75 }
  76
  77 static char mandescr_playdtmf[] =
  78 "Description: Plays a dtmf digit on the specified channel.\n"
  79 "Variables: (all are required)\n"
  80 "       Channel: Channel name to send digit to\n"
  81 "       Digit: The dtmf digit to play\n";
  82
  83 static int manager_play_dtmf(struct mansession *s, const struct message *m)
  84 {
  85         const char *channel = astman_get_header(m, "Channel");
  86         const char *digit = astman_get_header(m, "Digit");
  87         struct ast_channel *chan = ast_get_channel_by_name_locked(channel);
  88
  89         if (!chan) {
  90                 astman_send_error(s, m, "Channel not specified");
  91                 return 0;
  92         }
  93         if (!digit) {
  94                 astman_send_error(s, m, "No digit specified");
  95                 ast_channel_unlock(chan);
  96                 return 0;
  97         }
  98
  99         ast_senddigit(chan, *digit, 0);
 100
 101         ast_channel_unlock(chan);
 102         astman_send_ack(s, m, "DTMF successfully queued");
 103
 104         return 0;
 105 }
 106
 107 static int unload_module(void)
 108 {
 109         int res;
 110
 111         res = ast_unregister_application(app);
 112         res |= ast_manager_unregister("PlayDTMF");
 113
 114         return res;
 115 }
 116
 117 static int load_module(void)
 118 {
 119         int res;
 120
 121         res = ast_manager_register2( "PlayDTMF", EVENT_FLAG_CALL, manager_play_dtmf, "Play DTMF signal on a specific channel.", mandescr_playdtmf );
 122         res |= ast_register_application(app, senddtmf_exec, synopsis, descrip);
 123
 124         return res;
 125 }
 126
 127 AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Send DTMF digits Application");