Fix a couple of spots in the handling of device states that could lead to a
[asterisk/asterisk.git] / apps / app_image.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 transmit an image
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
36 #include "asterisk/lock.h"
37 #include "asterisk/file.h"
38 #include "asterisk/logger.h"
39 #include "asterisk/channel.h"
40 #include "asterisk/pbx.h"
41 #include "asterisk/module.h"
42 #include "asterisk/translate.h"
43 #include "asterisk/image.h"
44 #include "asterisk/app.h"
45 #include "asterisk/options.h"
46
47 static char *app = "SendImage";
48
49 static char *synopsis = "Send an image file";
50
51 static char *descrip = 
52 "  SendImage(filename): Sends an image on a channel. \n"
53 "If the channel supports image transport but the image send\n"
54 "fails, the channel will be hung up. Otherwise, the dialplan\n"
55 "continues execution.\n"
56 "The option string may contain the following character:\n"
57 "       'j' -- jump to priority n+101 if the channel doesn't support image transport\n"
58 "This application sets the following channel variable upon completion:\n"
59 "       SENDIMAGESTATUS         The status is the result of the attempt as a text string, one of\n"
60 "               OK | NOSUPPORT \n";                     
61
62
63 static int sendimage_exec(struct ast_channel *chan, void *data)
64 {
65         int res = 0;
66         struct ast_module_user *u;
67         char *parse;
68         int priority_jump = 0;
69         AST_DECLARE_APP_ARGS(args,
70                 AST_APP_ARG(filename);
71                 AST_APP_ARG(options);
72         );
73         
74         u = ast_module_user_add(chan);
75
76         parse = ast_strdupa(data);
77
78         AST_STANDARD_APP_ARGS(args, parse);
79
80         if (ast_strlen_zero(args.filename)) {
81                 ast_log(LOG_WARNING, "SendImage requires an argument (filename[|options])\n");
82                 return -1;
83         }
84
85         if (args.options) {
86                 if (strchr(args.options, 'j'))
87                         priority_jump = 1;
88         }
89
90         if (!ast_supports_images(chan)) {
91                 /* Does not support transport */
92                 if (priority_jump || ast_opt_priority_jumping)
93                         ast_goto_if_exists(chan, chan->context, chan->exten, chan->priority + 101);
94                 pbx_builtin_setvar_helper(chan, "SENDIMAGESTATUS", "NOSUPPORT");
95                 ast_module_user_remove(u);
96                 return 0;
97         }
98
99         if (!(res = ast_send_image(chan, args.filename)))
100                 pbx_builtin_setvar_helper(chan, "SENDIMAGESTATUS", "OK");
101         
102         ast_module_user_remove(u);
103         
104         return res;
105 }
106
107 static int unload_module(void)
108 {
109         int res;
110
111         res = ast_unregister_application(app);
112
113         ast_module_user_hangup_all();
114
115         return res; 
116 }
117
118 static int load_module(void)
119 {
120         return ast_register_application(app, sendimage_exec, synopsis, descrip);
121 }
122
123 AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Image Transmission Application");