apps/app_softhangup.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 SoftHangup application
  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 <stdlib.h>
  33 #include <stdio.h>
  34 #include <string.h>
  35 #include <unistd.h>
  36 #include <sys/types.h>
  37
  38 #include "asterisk/file.h"
  39 #include "asterisk/logger.h"
  40 #include "asterisk/channel.h"
  41 #include "asterisk/pbx.h"
  42 #include "asterisk/module.h"
  43 #include "asterisk/lock.h"
  44
  45 static char *synopsis = "Soft Hangup Application";
  46
  47 static char *desc = "  SoftHangup(Technology/resource|options)\n"
  48 "Hangs up the requested channel.  If there are no channels to hangup,\n"
  49 "the application will report it.\n"
  50 "- 'options' may contain the following letter:\n"
  51 "     'a' : hang up all channels on a specified device instead of a single resource\n";
  52
  53 static char *app = "SoftHangup";
  54
  55
  56 static int softhangup_exec(struct ast_channel *chan, void *data)
  57 {
  58         struct ast_module_user *u;
  59         struct ast_channel *c=NULL;
  60         char *options, *cut, *cdata, *match;
  61         char name[AST_CHANNEL_NAME] = "";
  62         int all = 0;
  63
  64         if (ast_strlen_zero(data)) {
  65                 ast_log(LOG_WARNING, "SoftHangup requires an argument (Technology/resource)\n");
  66                 return 0;
  67         }
  68
  69         u = ast_module_user_add(chan);
  70
  71         cdata = ast_strdupa(data);
  72         match = strsep(&cdata, "|");
  73         options = strsep(&cdata, "|");
  74         all = options && strchr(options,'a');
  75         c = ast_channel_walk_locked(NULL);
  76         while (c) {
  77                 ast_copy_string(name, c->name, sizeof(name));
  78                 ast_mutex_unlock(&c->lock);
  79                 /* XXX watch out, i think it is wrong to access c-> after unlocking! */
  80                 if (all) {
  81                         /* CAPI is set up like CAPI[foo/bar]/clcnt */
  82                         if (!strcmp(c->tech->type, "CAPI"))
  83                                 cut = strrchr(name,'/');
  84                         /* Basically everything else is Foo/Bar-Z */
  85                         else
  86                                 cut = strchr(name,'-');
  87                         /* Get rid of what we've cut */
  88                         if (cut)
  89                                 *cut = 0;
  90                 }
  91                 if (!strcasecmp(name, match)) {
  92                         ast_log(LOG_WARNING, "Soft hanging %s up.\n",c->name);
  93                         ast_softhangup(c, AST_SOFTHANGUP_EXPLICIT);
  94                         if(!all)
  95                                 break;
  96                 }
  97                 c = ast_channel_walk_locked(c);
  98         }
  99
 100         ast_module_user_remove(u);
 101
 102         return 0;
 103 }
 104
 105 static int unload_module(void)
 106 {
 107         int res;
 108
 109         res = ast_unregister_application(app);
 110
 111         ast_module_user_hangup_all();
 112
 113         return res;
 114 }
 115
 116 static int load_module(void)
 117 {
 118         return ast_register_application(app, softhangup_exec, synopsis, desc);
 119 }
 120
 121 AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Hangs up the requested channel");