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[loudgame] / loudgame.c
1 /*
2  * Copyright (C) 2003-2004 Imendio AB
3  * Copyright (C) 2008 Carl Worth
4  *
5  * This program is free software: you can redistribute it and/or modify
6  * it under the terms of the GNU General Public License as published by
7  * the Free Software Foundation, either version 3 of the License, or
8  * (at your option) any later version.
9  *
10  * This program is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13  * GNU General Public License for more details.
14  *
15  * You should have received a copy of the GNU General Public License
16  * along with this program.  If not, see http://www.gnu.org/licenses/ .
17  *
18  * Authors: Imendio AB
19  *          Carl Worth <cworth@cworth.org>
20  */
21
22 #include "loudgame.h"
23  
24 #include <glib.h>
25 #include <string.h>
26 #include <stdio.h>
27 #include <stdlib.h>
28  
29 void
30 loudgame_quit (loudgame_t *lg, int return_value)
31 {
32     GError *error = NULL;
33
34     lg->return_value = return_value;
35
36     if (lg->connection)
37     {
38         if (! lm_connection_close (lg->connection, &error))
39         {
40             g_print ("An error occurred during lm_connection_close: %s\n",
41                      error->message);
42         }
43         lm_connection_unref (lg->connection);
44         lg->connection = NULL;
45     }
46
47     g_main_loop_quit (lg->main_loop);
48 }
49  
50 static void
51 authentication_cb (LmConnection *connection, gboolean result, gpointer closure)
52 {
53     LmMessage *m;
54     loudgame_t *lg = closure;
55
56     if (! result) {
57         g_print ("Authentication for %s failed\n", lg->name);
58         loudgame_quit (lg, 1);
59         return;
60     }
61                  
62     m = lm_message_new_with_sub_type (NULL,
63                                       LM_MESSAGE_TYPE_PRESENCE,
64                                       LM_MESSAGE_SUB_TYPE_AVAILABLE);
65
66     lm_connection_send (connection, m, NULL);
67     lm_message_unref (m);
68 }
69  
70 static void
71 connection_open_cb (LmConnection *connection, gboolean result, loudgame_t *lg)
72 {
73     lm_connection_authenticate (connection,
74                                 lg->name, lg->passwd, "TestLM",
75                                 authentication_cb, lg, FALSE,  NULL);
76 }
77
78 void
79 loudgame_send (loudgame_t       *lg,
80                const char       *peer,
81                const char       *message)
82 {
83     LmMessage *reply;
84     gboolean result;
85     GError *error = NULL;
86
87     reply = lm_message_new (peer, LM_MESSAGE_TYPE_MESSAGE);
88
89     lm_message_node_add_child (reply->node, "body", message);
90
91     result = lm_connection_send (lg->connection, reply, &error);
92     lm_message_unref (reply);
93
94     if (! result) {
95         g_error ("lm_connection_send failed: %s\n",
96                  error->message);
97         loudgame_quit (lg, 1);
98     }
99 }
100
101 void
102 loudgame_vsendf (loudgame_t     *lg,
103                  const char     *peer,
104                  const char     *format,
105                  va_list         va)
106 {
107     char *str;
108
109     str = g_strdup_vprintf (format, va);
110
111     loudgame_send (lg, peer, str);
112
113     free (str);
114 }
115
116 void
117 loudgame_sendf (loudgame_t      *lg,
118                 const char      *peer,
119                 const char      *format,
120                 ...)
121 {
122     va_list va;
123
124     va_start (va, format);
125
126     loudgame_vsendf (lg, peer, format, va);
127
128     va_end (va);
129 }
130
131 static void
132 handle_command (LmConnection    *connection,
133                 const char      *peer,
134                 const char      *command,
135                 loudgame_t      *lg)
136 {
137     char *error;
138
139     if (strcmp (command, "quit") == 0) {
140         loudgame_quit (lg, 0);
141         return;
142     }
143
144     error = g_strdup_printf ("Unknown command: '%s'", command);
145     loudgame_send (lg, peer, error);
146     free (error);
147 }
148  
149 static LmHandlerResult
150 handle_messages (LmMessageHandler *handler,
151                  LmConnection     *connection,
152                  LmMessage        *m,
153                  gpointer          closure)
154 {
155     loudgame_t *lg = closure;
156     LmMessageNode *body;
157     const char *peer;
158     const char *body_str;
159
160     peer = lm_message_node_get_attribute (m->node, "from");
161
162     body = lm_message_node_get_child (m->node, "body");
163     if (body) {
164         body_str = lm_message_node_get_value (body);
165
166         if (body_str && body_str[0] == '%')
167             handle_command (connection, peer, body_str + 1, lg);
168         else if (lg->handle_message)
169             (lg->handle_message) (lg, peer, body_str);
170     }
171         
172     return LM_HANDLER_RESULT_REMOVE_MESSAGE;
173 }
174
175 static gboolean
176 make_connection (gpointer closure)
177 {
178     loudgame_t       *lg;
179     LmMessageHandler *handler;
180     gchar            *jid;
181     GError           *error = NULL;
182
183     lg = closure;
184                                                                                 
185     lg->connection = lm_connection_new (lg->server);
186
187     jid = g_strdup_printf ("%s@%s", lg->name, lg->server);
188     lm_connection_set_jid (lg->connection, jid);
189     g_free (jid);
190
191     handler = lm_message_handler_new (handle_messages, lg, NULL);
192     lm_connection_register_message_handler (lg->connection,
193                                             handler,
194                                             LM_MESSAGE_TYPE_MESSAGE,
195                                             LM_HANDLER_PRIORITY_NORMAL);
196                                                                                 
197     lm_message_handler_unref (handler);
198                                                                                 
199     if (! lm_connection_open (lg->connection,
200                               (LmResultFunction) connection_open_cb,
201                               lg, NULL, &error))
202     {
203         g_print ("Failed to open connection to %s: %s.\n",
204                  lg->server, error->message);
205         loudgame_quit (lg, 1);
206     }
207
208     /* It seems to be necessary to explicitly tell the server we're
209      * still here. Let's see if one keep-alive every 60 seconds is
210      * sufficient. */
211     lm_connection_set_keep_alive_rate (lg->connection, 60);
212
213     /* Return false to not schedule another call. */
214     return 0;
215 }
216
217 int
218 loudgame_init (loudgame_t *lg, int argc, char **argv)
219 {
220     if (argc != 4) {
221         g_print ("Usage: %s <server> <username> <password>\n", argv[0]);
222         return 1;
223     }
224
225     lg->server = argv[1];
226     lg->name = argv[2];
227     lg->passwd = argv[3];
228
229     lg->connection = NULL;
230
231     lg->main_loop = g_main_loop_new (NULL, FALSE);
232
233     lg->return_value = 0;
234
235     lg->handle_message = NULL;
236
237     return 0;
238 }
239
240 int
241 loudgame_run (loudgame_t *lg)
242 {
243     g_idle_add (make_connection, lg);
244
245     g_main_loop_run (lg->main_loop);
246
247     g_main_loop_unref (lg->main_loop);
248                                                                                 
249     return lg->return_value;
250 }