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comparison: src/gtksession.c

src/gtksession.c

branch
cpw.khc.msnp14
changeset 20472
6a6d2ef151e6
parent 13912
463b4fa9f067
parent 20469
b2836a24d81e
child 20473
91e1b3a49d10
equal deleted inserted replaced
13912:463b4fa9f067 20472:6a6d2ef151e6
1 /*
2 * @file gtksession.c X Windows session management API
3 * @ingroup gtkui
4 *
5 * Gaim is the legal property of its developers, whose names are too numerous
6 * to list here. Please refer to the COPYRIGHT file distributed with this
7 * source distribution.
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 *
23 */
24 #include "internal.h"
25
26 #include "core.h"
27 #include "debug.h"
28 #include "eventloop.h"
29 #include "gtksession.h"
30
31 #ifdef USE_SM
32
33 #include <X11/ICE/ICElib.h>
34 #include <X11/SM/SMlib.h>
35 #include <gdk/gdkx.h>
36 #include <unistd.h>
37 #include <fcntl.h>
38
39 #define ERROR_LENGTH 512
40
41 static IceIOErrorHandler ice_installed_io_error_handler;
42 static SmcConn session = NULL;
43 static gchar *myself = NULL;
44 static gboolean had_first_save = FALSE;
45 static gboolean session_managed = FALSE;
46
47 /* ICE belt'n'braces stuff */
48
49 struct ice_connection_info {
50 IceConn connection;
51 guint input_id;
52 };
53
54 static void ice_process_messages(gpointer data, gint fd,
55 GaimInputCondition condition) {
56 struct ice_connection_info *conninfo = (struct ice_connection_info*) data;
57 IceProcessMessagesStatus status;
58
59 /* please don't block... please! */
60 status = IceProcessMessages(conninfo->connection, NULL, NULL);
61
62 if (status == IceProcessMessagesIOError) {
63 gaim_debug(GAIM_DEBUG_INFO, "Session Management",
64 "ICE IO error, closing connection... ");
65
66 /* IO error, please disconnect */
67 IceSetShutdownNegotiation(conninfo->connection, False);
68 IceCloseConnection(conninfo->connection);
69
70 gaim_debug(GAIM_DEBUG_INFO, NULL, "done.\n");
71
72 /* cancel the handler */
73 gaim_input_remove(conninfo->input_id);
74 }
75 }
76
77 static void ice_connection_watch(IceConn connection, IcePointer client_data,
78 Bool opening, IcePointer *watch_data) {
79 struct ice_connection_info *conninfo = NULL;
80
81 if (opening) {
82 gaim_debug(GAIM_DEBUG_INFO, "Session Management",
83 "Handling new ICE connection... ");
84
85 /* ensure ICE connection is not passed to child processes */
86 fcntl(IceConnectionNumber(connection), F_SETFD, FD_CLOEXEC);
87
88 conninfo = g_new(struct ice_connection_info, 1);
89 conninfo->connection = connection;
90
91 /* watch the connection */
92 conninfo->input_id = gaim_input_add(IceConnectionNumber(connection), GAIM_INPUT_READ,
93 ice_process_messages, conninfo);
94 *watch_data = conninfo;
95 } else {
96 gaim_debug(GAIM_DEBUG_INFO, "Session Management",
97 "Handling closed ICE connection... ");
98
99 /* get the input ID back and stop watching it */
100 conninfo = (struct ice_connection_info*) *watch_data;
101 gaim_input_remove(conninfo->input_id);
102 g_free(conninfo);
103 }
104
105 gaim_debug(GAIM_DEBUG_INFO, NULL, "done.\n");
106 }
107
108 /* We call any handler installed before (or after) ice_init but
109 * avoid calling the default libICE handler which does an exit().
110 *
111 * This means we do nothing by default, which is probably correct,
112 * the connection will get closed by libICE
113 */
114
115 static void ice_io_error_handler(IceConn connection) {
116 gaim_debug(GAIM_DEBUG_INFO, "Session Management",
117 "Handling ICE IO error... ");
118
119 if (ice_installed_io_error_handler)
120 (*ice_installed_io_error_handler)(connection);
121
122 gaim_debug(GAIM_DEBUG_INFO, NULL, "done.\n");
123 }
124
125 static void ice_init() {
126 IceIOErrorHandler default_handler;
127
128 ice_installed_io_error_handler = IceSetIOErrorHandler(NULL);
129 default_handler = IceSetIOErrorHandler(ice_io_error_handler);
130
131 if (ice_installed_io_error_handler == default_handler)
132 ice_installed_io_error_handler = NULL;
133
134 IceAddConnectionWatch(ice_connection_watch, NULL);
135
136 gaim_debug(GAIM_DEBUG_INFO, "Session Management",
137 "ICE initialized.\n");
138 }
139
140 /* my magic utility function */
141
142 static gchar **session_make_command(gchar *client_id, gchar *config_dir) {
143 gint i = 2;
144 gint j = 0;
145 gchar **ret;
146
147 if (client_id) i += 2;
148 if (config_dir) i += 2; /* we will specify gaim's user dir */
149
150 ret = g_new(gchar *, i);
151 ret[j++] = g_strdup(myself);
152
153 if (client_id) {
154 ret[j++] = g_strdup("--session");
155 ret[j++] = g_strdup(client_id);
156 }
157
158 if (config_dir) {
159 ret[j++] = g_strdup("--config");
160 ret[j++] = g_strdup(config_dir);
161 }
162
163 ret[j++] = NULL;
164
165 return ret;
166 }
167
168 /* SM callback handlers */
169
170 static void session_save_yourself(SmcConn conn, SmPointer data, int save_type,
171 Bool shutdown, int interact_style, Bool fast) {
172 if (had_first_save == FALSE && save_type == SmSaveLocal &&
173 interact_style == SmInteractStyleNone && !shutdown &&
174 !fast) {
175 /* this is just a dry run, spit it back */
176 gaim_debug(GAIM_DEBUG_INFO, "Session Management",
177 "Received first save_yourself\n");
178 SmcSaveYourselfDone(conn, True);
179 had_first_save = TRUE;
180 return;
181 }
182
183 /* tum ti tum... don't add anything else here without *
184 * reading SMlib.PS from an X.org ftp server near you */
185
186 gaim_debug(GAIM_DEBUG_INFO, "Session Management",
187 "Received save_yourself\n");
188
189 if (save_type == SmSaveGlobal || save_type == SmSaveBoth) {
190 /* may as well do something ... */
191 /* or not -- save_prefs(); */
192 }
193
194 SmcSaveYourselfDone(conn, True);
195 }
196
197 static void session_die(SmcConn conn, SmPointer data) {
198 gaim_debug(GAIM_DEBUG_INFO, "Session Management",
199 "Received die\n");
200 gaim_core_quit();
201 }
202
203 static void session_save_complete(SmcConn conn, SmPointer data) {
204 gaim_debug(GAIM_DEBUG_INFO, "Session Management",
205 "Received save_complete\n");
206 }
207
208 static void session_shutdown_cancelled(SmcConn conn, SmPointer data) {
209 gaim_debug(GAIM_DEBUG_INFO, "Session Management",
210 "Received shutdown_cancelled\n");
211 }
212
213 /* utility functions stolen from Gnome-client */
214
215 static void session_set_value(SmcConn conn, gchar *name, char *type,
216 int num_vals, SmPropValue *vals) {
217 SmProp *proplist[1];
218 SmProp prop;
219
220 g_return_if_fail(conn);
221
222 prop.name = name;
223 prop.type = type;
224 prop.num_vals = num_vals;
225 prop.vals = vals;
226
227 proplist[0] = &prop;
228 SmcSetProperties(conn, 1, proplist);
229 }
230
231 static void session_set_string(SmcConn conn, gchar *name, gchar *value) {
232 SmPropValue val;
233
234 g_return_if_fail(name);
235
236 val.length = strlen (value)+1;
237 val.value = value;
238
239 session_set_value(conn, name, SmARRAY8, 1, &val);
240 }
241
242 static void session_set_gchar(SmcConn conn, gchar *name, gchar value) {
243 SmPropValue val;
244
245 g_return_if_fail(name);
246
247 val.length = 1;
248 val.value = &value;
249
250 session_set_value(conn, name, SmCARD8, 1, &val);
251 }
252
253 static void session_set_array(SmcConn conn, gchar *name, gchar *array[]) {
254 gint argc;
255 gchar **ptr;
256 gint i;
257
258 SmPropValue *vals;
259
260 g_return_if_fail (name);
261
262 /* We count the number of elements in our array. */
263 for (ptr = array, argc = 0; *ptr ; ptr++, argc++) /* LOOP */;
264
265 /* Now initialize the 'vals' array. */
266 vals = g_new (SmPropValue, argc);
267 for (ptr = array, i = 0 ; i < argc ; ptr++, i++) {
268 vals[i].length = strlen (*ptr);
269 vals[i].value = *ptr;
270 }
271
272 session_set_value(conn, name, SmLISTofARRAY8, argc, vals);
273
274 g_free (vals);
275 }
276
277 #endif /* USE_SM */
278
279 /* setup functions */
280
281 void
282 gaim_gtk_session_init(gchar *argv0, gchar *previous_id, gchar *config_dir)
283 {
284 #ifdef USE_SM
285 SmcCallbacks callbacks;
286 gchar *client_id = NULL;
287 gchar error[ERROR_LENGTH] = "";
288 gchar *tmp = NULL;
289 gchar **cmd = NULL;
290
291 if (session != NULL) {
292 /* session is already established, what the hell is going on? */
293 gaim_debug(GAIM_DEBUG_WARNING, "Session Management",
294 "Duplicated call to gaim_gtk_session_init!\n");
295 return;
296 }
297
298 if (g_getenv("SESSION_MANAGER") == NULL) {
299 gaim_debug(GAIM_DEBUG_ERROR, "Session Management",
300 "No SESSION_MANAGER found, aborting.\n");
301 return;
302 }
303
304 ice_init();
305
306 callbacks.save_yourself.callback = session_save_yourself;
307 callbacks.die.callback = session_die;
308 callbacks.save_complete.callback = session_save_complete;
309 callbacks.shutdown_cancelled.callback = session_shutdown_cancelled;
310
311 callbacks.save_yourself.client_data = NULL;
312 callbacks.die.client_data = NULL;
313 callbacks.save_complete.client_data = NULL;
314 callbacks.shutdown_cancelled.client_data = NULL;
315
316 if (previous_id) {
317 gaim_debug(GAIM_DEBUG_INFO, "Session Management",
318 "Connecting with previous ID %s\n", previous_id);
319 } else {
320 gaim_debug(GAIM_DEBUG_INFO, "Session Management",
321 "Connecting with no previous ID\n");
322 }
323
324 session = SmcOpenConnection(NULL, "session", SmProtoMajor, SmProtoMinor, SmcSaveYourselfProcMask |
325 SmcDieProcMask | SmcSaveCompleteProcMask | SmcShutdownCancelledProcMask,
326 &callbacks, previous_id, &client_id, ERROR_LENGTH, error);
327
328 if (session == NULL) {
329 if (error[0] != '\0') {
330 gaim_debug(GAIM_DEBUG_ERROR, "Session Management",
331 "Connection failed with error: %s\n", error);
332 } else {
333 gaim_debug(GAIM_DEBUG_ERROR, "Session Management",
334 "Connetion failed with unknown error.\n");
335 }
336 return;
337 }
338
339 tmp = SmcVendor(session);
340 gaim_debug(GAIM_DEBUG_INFO, "Session Management",
341 "Connected to manager (%s) with client ID %s\n",
342 tmp, client_id);
343 g_free(tmp);
344
345 session_managed = TRUE;
346 gdk_set_sm_client_id(client_id);
347
348 tmp = g_get_current_dir();
349 session_set_string(session, SmCurrentDirectory, tmp);
350 g_free(tmp);
351
352 tmp = g_strdup_printf("%d", (int) getpid());
353 session_set_string(session, SmProcessID, tmp);
354 g_free(tmp);
355
356 tmp = g_strdup(g_get_user_name());
357 session_set_string(session, SmUserID, tmp);
358 g_free(tmp);
359
360 session_set_gchar(session, SmRestartStyleHint, (gchar) SmRestartIfRunning);
361 session_set_string(session, SmProgram, g_get_prgname());
362
363 myself = g_strdup(argv0);
364 gaim_debug(GAIM_DEBUG_MISC, "Session Management",
365 "Using %s as command\n", myself);
366
367 cmd = session_make_command(NULL, config_dir);
368 session_set_array(session, SmCloneCommand, cmd);
369 g_strfreev(cmd);
370
371 /* this is currently useless, but gnome-session warns 'the following applications will not
372 save their current status' bla bla if we don't have it and the user checks 'Save Session'
373 when they log out */
374 cmd = g_new(gchar *, 2);
375 cmd[0] = g_strdup("/bin/true");
376 cmd[1] = NULL;
377 session_set_array(session, SmDiscardCommand, cmd);
378 g_strfreev(cmd);
379
380 cmd = session_make_command(client_id, config_dir);
381 session_set_array(session, SmRestartCommand, cmd);
382 g_strfreev(cmd);
383
384 g_free(client_id);
385 #endif /* USE_SM */
386 }
387
388 void
389 gaim_gtk_session_end()
390 {
391 #ifdef USE_SM
392 if (session == NULL) /* no session to close */
393 return;
394
395 SmcCloseConnection(session, 0, NULL);
396
397 gaim_debug(GAIM_DEBUG_INFO, "Session Management",
398 "Connection closed.\n");
399 #endif /* USE_SM */
400 }

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