7d1dca447b912c748ebf6c070bef76bf5bdd05a8
[asterisk/asterisk.git] / apps / app_page.c
1 /*
2  * Asterisk -- An open source telephony toolkit.
3  *
4  * Copyright (c) 2004 - 2006 Digium, Inc.  All rights reserved.
5  *
6  * Mark Spencer <markster@digium.com>
7  *
8  * This code is released under the GNU General Public License
9  * version 2.0.  See LICENSE for more information.
10  *
11  * See http://www.asterisk.org for more information about
12  * the Asterisk project. Please do not directly contact
13  * any of the maintainers of this project for assistance;
14  * the project provides a web site, mailing lists and IRC
15  * channels for your use.
16  *
17  */
18
19 /*! \file
20  *
21  * \brief page() - Paging application
22  *
23  * \author Mark Spencer <markster@digium.com>
24  *
25  * \ingroup applications
26  */
27
28 /*** MODULEINFO
29         <depend>dahdi</depend>
30         <depend>app_meetme</depend>
31  ***/
32
33 #include "asterisk.h"
34
35 ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
36
37 #include "asterisk/channel.h"
38 #include "asterisk/pbx.h"
39 #include "asterisk/module.h"
40 #include "asterisk/file.h"
41 #include "asterisk/app.h"
42 #include "asterisk/chanvars.h"
43 #include "asterisk/utils.h"
44 #include "asterisk/devicestate.h"
45 #include "asterisk/dial.h"
46
47 /*** DOCUMENTATION
48         <application name="Page" language="en_US">
49                 <synopsis>
50                         Page series of phones
51                 </synopsis>
52                 <syntax>
53                         <parameter name="Technology/Resource" required="true" argsep="&amp;">
54                                 <argument name="Technology/Resource" required="true">
55                                         <para>Specification of the device(s) to dial. These must be in the format of
56                                         <literal>Technology/Resource</literal>, where <replaceable>Technology</replaceable>
57                                         represents a particular channel driver, and <replaceable>Resource</replaceable> represents a resource
58                                         available to that particular channel driver.</para>
59                                 </argument>
60                                 <argument name="Technology2/Resource2" multiple="true">
61                                         <para>Optional extra devices to dial inparallel</para>
62                                         <para>If you need more then one enter them as Technology2/Resource2&amp;
63                                         Technology3/Resourse3&amp;.....</para>
64                                 </argument>
65                         </parameter>
66                         <parameter name="options">
67                                 <optionlist>
68                                         <option name="d">
69                                                 <para>Full duplex audio</para>
70                                         </option>
71                                         <option name="q">
72                                                 <para>Quiet, do not play beep to caller</para>
73                                         </option>
74                                         <option name="r">
75                                                 <para>Record the page into a file (meetme option <literal>r</literal>)</para>
76                                         </option>
77                                         <option name="s">
78                                                 <para>Only dial a channel if its device state says that it is <literal>NOT_INUSE</literal></para>
79                                         </option>
80                                 </optionlist>
81                         </parameter>
82                         <parameter name="timeout">
83                                 <para>Specify the length of time that the system will attempt to connect a call.
84                                 After this duration, any intercom calls that have not been answered will be hung up by the
85                                 system.</para>
86                         </parameter>
87                 </syntax>
88                 <description>
89                         <para>Places outbound calls to the given <replaceable>technology</replaceable>/<replaceable>resource</replaceable>
90                         and dumps them into a conference bridge as muted participants. The original
91                         caller is dumped into the conference as a speaker and the room is
92                         destroyed when the original callers leaves.</para>
93                 </description>
94                 <see-also>
95                         <ref type="application">MeetMe</ref>
96                 </see-also>
97         </application>
98  ***/
99 static const char *app_page= "Page";
100
101 enum {
102         PAGE_DUPLEX = (1 << 0),
103         PAGE_QUIET = (1 << 1),
104         PAGE_RECORD = (1 << 2),
105         PAGE_SKIP = (1 << 3),
106 } page_opt_flags;
107
108 AST_APP_OPTIONS(page_opts, {
109         AST_APP_OPTION('d', PAGE_DUPLEX),
110         AST_APP_OPTION('q', PAGE_QUIET),
111         AST_APP_OPTION('r', PAGE_RECORD),
112         AST_APP_OPTION('s', PAGE_SKIP),
113 });
114
115 #define MAX_DIALS 128
116
117 static int page_exec(struct ast_channel *chan, void *data)
118 {
119         char *tech, *resource, *tmp;
120         char meetmeopts[88], originator[AST_CHANNEL_NAME], *opts[0];
121         struct ast_flags flags = { 0 };
122         unsigned int confid = ast_random();
123         struct ast_app *app;
124         int res = 0, pos = 0, i = 0;
125         struct ast_dial *dials[MAX_DIALS];
126         int timeout = 0;
127         char *parse;
128
129         AST_DECLARE_APP_ARGS(args,
130                 AST_APP_ARG(devices);
131                 AST_APP_ARG(options);
132                 AST_APP_ARG(timeout);
133         );
134
135         if (ast_strlen_zero(data)) {
136                 ast_log(LOG_WARNING, "This application requires at least one argument (destination(s) to page)\n");
137                 return -1;
138         }
139
140         if (!(app = pbx_findapp("MeetMe"))) {
141                 ast_log(LOG_WARNING, "There is no MeetMe application available!\n");
142                 return -1;
143         };
144
145         parse = ast_strdupa(data);
146
147         AST_STANDARD_APP_ARGS(args, parse);
148
149         ast_copy_string(originator, chan->name, sizeof(originator));
150         if ((tmp = strchr(originator, '-'))) {
151                 *tmp = '\0';
152         }
153
154         if (!ast_strlen_zero(args.options)) {
155                 ast_app_parse_options(page_opts, &flags, opts, args.options);
156         }
157
158         if (!ast_strlen_zero(args.timeout)) {
159                 timeout = atoi(args.timeout);
160         }
161
162         snprintf(meetmeopts, sizeof(meetmeopts), "MeetMe,%ud,%s%sqxdw(5)", confid, (ast_test_flag(&flags, PAGE_DUPLEX) ? "" : "m"),
163                 (ast_test_flag(&flags, PAGE_RECORD) ? "r" : "") );
164
165         /* Go through parsing/calling each device */
166         while ((tech = strsep(&args.devices, "&"))) {
167                 int state = 0;
168                 struct ast_dial *dial = NULL;
169
170                 /* don't call the originating device */
171                 if (!strcasecmp(tech, originator))
172                         continue;
173
174                 /* If no resource is available, continue on */
175                 if (!(resource = strchr(tech, '/'))) {
176                         ast_log(LOG_WARNING, "Incomplete destination '%s' supplied.\n", tech);
177                         continue;
178                 }
179
180                 /* Ensure device is not in use if skip option is enabled */
181                 if (ast_test_flag(&flags, PAGE_SKIP)) {
182                         state = ast_device_state(tech);
183                         if (state == AST_DEVICE_UNKNOWN) {
184                                 ast_log(LOG_WARNING, "Destination '%s' has device state '%s'. Paging anyway.\n", tech, ast_devstate2str(state));
185                         } else if (state != AST_DEVICE_NOT_INUSE) {
186                                 ast_log(LOG_WARNING, "Destination '%s' has device state '%s'.\n", tech, ast_devstate2str(state));
187                                 continue;
188                         }
189                 }
190
191                 *resource++ = '\0';
192
193                 /* Create a dialing structure */
194                 if (!(dial = ast_dial_create())) {
195                         ast_log(LOG_WARNING, "Failed to create dialing structure.\n");
196                         continue;
197                 }
198
199                 /* Append technology and resource */
200                 if (ast_dial_append(dial, tech, resource) == -1) {
201                         ast_log(LOG_ERROR, "Failed to add %s to outbound dial\n", tech);
202                         continue;
203                 }
204
205                 /* Set ANSWER_EXEC as global option */
206                 ast_dial_option_global_enable(dial, AST_DIAL_OPTION_ANSWER_EXEC, meetmeopts);
207
208                 if (timeout) {
209                         ast_dial_set_global_timeout(dial, timeout * 1000);
210                 }
211
212                 /* Run this dial in async mode */
213                 ast_dial_run(dial, chan, 1);
214
215                 /* Put in our dialing array */
216                 dials[pos++] = dial;
217         }
218
219         if (!ast_test_flag(&flags, PAGE_QUIET)) {
220                 res = ast_streamfile(chan, "beep", chan->language);
221                 if (!res)
222                         res = ast_waitstream(chan, "");
223         }
224
225         if (!res) {
226                 snprintf(meetmeopts, sizeof(meetmeopts), "%ud,A%s%sqxd", confid, (ast_test_flag(&flags, PAGE_DUPLEX) ? "" : "t"), 
227                         (ast_test_flag(&flags, PAGE_RECORD) ? "r" : "") );
228                 pbx_exec(chan, app, meetmeopts);
229         }
230
231         /* Go through each dial attempt cancelling, joining, and destroying */
232         for (i = 0; i < pos; i++) {
233                 struct ast_dial *dial = dials[i];
234
235                 /* We have to wait for the async thread to exit as it's possible Meetme won't throw them out immediately */
236                 ast_dial_join(dial);
237
238                 /* Hangup all channels */
239                 ast_dial_hangup(dial);
240
241                 /* Destroy dialing structure */
242                 ast_dial_destroy(dial);
243         }
244
245         return -1;
246 }
247
248 static int unload_module(void)
249 {
250         return ast_unregister_application(app_page);
251 }
252
253 static int load_module(void)
254 {
255         return ast_register_application_xml(app_page, page_exec);
256 }
257
258 AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Page Multiple Phones");
259