[134] | 1 | /* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*- |
---|
| 2 | * |
---|
| 3 | * Copyright (C) 2007 William Jon McCann <mccann@jhu.edu> |
---|
| 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 2 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, write to the Free Software |
---|
| 17 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
---|
| 18 | * |
---|
| 19 | */ |
---|
| 20 | |
---|
| 21 | #include "config.h" |
---|
| 22 | |
---|
| 23 | #include <stdlib.h> |
---|
| 24 | #include <stdio.h> |
---|
| 25 | #include <unistd.h> |
---|
| 26 | #include <errno.h> |
---|
| 27 | #include <string.h> |
---|
| 28 | #include <sys/types.h> |
---|
| 29 | #include <sys/stat.h> |
---|
| 30 | #include <fcntl.h> |
---|
| 31 | #include <pwd.h> |
---|
| 32 | #include <grp.h> |
---|
| 33 | #include <sys/wait.h> |
---|
| 34 | #include <locale.h> |
---|
| 35 | #include <signal.h> |
---|
| 36 | |
---|
| 37 | #include <glib.h> |
---|
| 38 | #include <glib/gi18n.h> |
---|
| 39 | #include <glib/gstdio.h> |
---|
| 40 | #include <glib-object.h> |
---|
| 41 | |
---|
| 42 | #define DBUS_API_SUBJECT_TO_CHANGE |
---|
| 43 | #include <dbus/dbus-glib.h> |
---|
| 44 | #include <dbus/dbus-glib-lowlevel.h> |
---|
| 45 | |
---|
| 46 | #include "gdm-manager.h" |
---|
| 47 | #include "gdm-log.h" |
---|
| 48 | #include "gdm-common.h" |
---|
| 49 | #include "gdm-signal-handler.h" |
---|
| 50 | |
---|
| 51 | #include "gdm-settings.h" |
---|
| 52 | #include "gdm-settings-direct.h" |
---|
| 53 | #include "gdm-settings-keys.h" |
---|
| 54 | |
---|
| 55 | #define GDM_DBUS_NAME "org.gnome.DisplayManager" |
---|
| 56 | |
---|
| 57 | static void bus_proxy_destroyed_cb (DBusGProxy *bus_proxy, |
---|
| 58 | GdmManager **managerp); |
---|
| 59 | |
---|
| 60 | extern char **environ; |
---|
| 61 | |
---|
| 62 | static GdmManager *manager = NULL; |
---|
| 63 | static GdmSettings *settings = NULL; |
---|
| 64 | static uid_t gdm_uid = -1; |
---|
| 65 | static gid_t gdm_gid = -1; |
---|
| 66 | |
---|
| 67 | static gboolean |
---|
| 68 | timed_exit_cb (GMainLoop *loop) |
---|
| 69 | { |
---|
| 70 | g_main_loop_quit (loop); |
---|
| 71 | return FALSE; |
---|
| 72 | } |
---|
| 73 | |
---|
| 74 | static DBusGProxy * |
---|
| 75 | get_bus_proxy (DBusGConnection *connection) |
---|
| 76 | { |
---|
| 77 | DBusGProxy *bus_proxy; |
---|
| 78 | |
---|
| 79 | bus_proxy = dbus_g_proxy_new_for_name (connection, |
---|
| 80 | DBUS_SERVICE_DBUS, |
---|
| 81 | DBUS_PATH_DBUS, |
---|
| 82 | DBUS_INTERFACE_DBUS); |
---|
| 83 | return bus_proxy; |
---|
| 84 | } |
---|
| 85 | |
---|
| 86 | static gboolean |
---|
| 87 | acquire_name_on_proxy (DBusGProxy *bus_proxy) |
---|
| 88 | { |
---|
| 89 | GError *error; |
---|
| 90 | guint result; |
---|
| 91 | gboolean res; |
---|
| 92 | gboolean ret; |
---|
| 93 | |
---|
| 94 | ret = FALSE; |
---|
| 95 | |
---|
| 96 | if (bus_proxy == NULL) { |
---|
| 97 | goto out; |
---|
| 98 | } |
---|
| 99 | |
---|
| 100 | error = NULL; |
---|
| 101 | res = dbus_g_proxy_call (bus_proxy, |
---|
| 102 | "RequestName", |
---|
| 103 | &error, |
---|
| 104 | G_TYPE_STRING, GDM_DBUS_NAME, |
---|
| 105 | G_TYPE_UINT, 0, |
---|
| 106 | G_TYPE_INVALID, |
---|
| 107 | G_TYPE_UINT, &result, |
---|
| 108 | G_TYPE_INVALID); |
---|
| 109 | if (! res) { |
---|
| 110 | if (error != NULL) { |
---|
| 111 | g_warning ("Failed to acquire %s: %s", GDM_DBUS_NAME, error->message); |
---|
| 112 | g_error_free (error); |
---|
| 113 | } else { |
---|
| 114 | g_warning ("Failed to acquire %s", GDM_DBUS_NAME); |
---|
| 115 | } |
---|
| 116 | goto out; |
---|
| 117 | } |
---|
| 118 | |
---|
| 119 | if (result != DBUS_REQUEST_NAME_REPLY_PRIMARY_OWNER) { |
---|
| 120 | if (error != NULL) { |
---|
| 121 | g_warning ("Failed to acquire %s: %s", GDM_DBUS_NAME, error->message); |
---|
| 122 | g_error_free (error); |
---|
| 123 | } else { |
---|
| 124 | g_warning ("Failed to acquire %s", GDM_DBUS_NAME); |
---|
| 125 | } |
---|
| 126 | goto out; |
---|
| 127 | } |
---|
| 128 | |
---|
| 129 | ret = TRUE; |
---|
| 130 | |
---|
| 131 | out: |
---|
| 132 | return ret; |
---|
| 133 | } |
---|
| 134 | |
---|
| 135 | static DBusGConnection * |
---|
| 136 | get_system_bus (void) |
---|
| 137 | { |
---|
| 138 | GError *error; |
---|
| 139 | DBusGConnection *bus; |
---|
| 140 | DBusConnection *connection; |
---|
| 141 | |
---|
| 142 | error = NULL; |
---|
| 143 | bus = dbus_g_bus_get (DBUS_BUS_SYSTEM, &error); |
---|
| 144 | if (bus == NULL) { |
---|
| 145 | g_warning ("Couldn't connect to system bus: %s", |
---|
| 146 | error->message); |
---|
| 147 | g_error_free (error); |
---|
| 148 | goto out; |
---|
| 149 | } |
---|
| 150 | |
---|
| 151 | connection = dbus_g_connection_get_connection (bus); |
---|
| 152 | dbus_connection_set_exit_on_disconnect (connection, FALSE); |
---|
| 153 | |
---|
| 154 | out: |
---|
| 155 | return bus; |
---|
| 156 | } |
---|
| 157 | |
---|
| 158 | static gboolean |
---|
| 159 | bus_reconnect (GdmManager *manager) |
---|
| 160 | { |
---|
| 161 | DBusGConnection *bus; |
---|
| 162 | DBusGProxy *bus_proxy; |
---|
| 163 | gboolean ret; |
---|
| 164 | |
---|
| 165 | ret = TRUE; |
---|
| 166 | |
---|
| 167 | bus = get_system_bus (); |
---|
| 168 | if (bus == NULL) { |
---|
| 169 | goto out; |
---|
| 170 | } |
---|
| 171 | |
---|
| 172 | bus_proxy = get_bus_proxy (bus); |
---|
| 173 | if (bus_proxy == NULL) { |
---|
| 174 | g_warning ("Could not construct bus_proxy object; will retry"); |
---|
| 175 | goto out; |
---|
| 176 | } |
---|
| 177 | |
---|
| 178 | if (! acquire_name_on_proxy (bus_proxy) ) { |
---|
| 179 | g_warning ("Could not acquire name; will retry"); |
---|
| 180 | goto out; |
---|
| 181 | } |
---|
| 182 | |
---|
| 183 | manager = gdm_manager_new (); |
---|
| 184 | if (manager == NULL) { |
---|
| 185 | g_warning ("Could not construct manager object"); |
---|
| 186 | exit (1); |
---|
| 187 | } |
---|
| 188 | |
---|
| 189 | g_signal_connect (bus_proxy, |
---|
| 190 | "destroy", |
---|
| 191 | G_CALLBACK (bus_proxy_destroyed_cb), |
---|
| 192 | &manager); |
---|
| 193 | |
---|
| 194 | g_debug ("Successfully reconnected to D-Bus"); |
---|
| 195 | |
---|
| 196 | gdm_manager_start (manager); |
---|
| 197 | |
---|
| 198 | ret = FALSE; |
---|
| 199 | |
---|
| 200 | out: |
---|
| 201 | return ret; |
---|
| 202 | } |
---|
| 203 | |
---|
| 204 | static void |
---|
| 205 | bus_proxy_destroyed_cb (DBusGProxy *bus_proxy, |
---|
| 206 | GdmManager **managerp) |
---|
| 207 | { |
---|
| 208 | g_debug ("Disconnected from D-Bus"); |
---|
| 209 | |
---|
| 210 | if (managerp == NULL || *managerp == NULL) { |
---|
| 211 | /* probably shutting down or something */ |
---|
| 212 | return; |
---|
| 213 | } |
---|
| 214 | |
---|
| 215 | g_object_unref (*managerp); |
---|
| 216 | *managerp = NULL; |
---|
| 217 | |
---|
| 218 | g_timeout_add_seconds (3, (GSourceFunc)bus_reconnect, managerp); |
---|
| 219 | } |
---|
| 220 | |
---|
| 221 | static void |
---|
| 222 | delete_pid (void) |
---|
| 223 | { |
---|
| 224 | g_unlink (GDM_PID_FILE); |
---|
| 225 | } |
---|
| 226 | |
---|
| 227 | static void |
---|
| 228 | write_pid (void) |
---|
| 229 | { |
---|
| 230 | int pf; |
---|
| 231 | ssize_t written; |
---|
| 232 | char pid[9]; |
---|
| 233 | |
---|
| 234 | errno = 0; |
---|
| 235 | pf = open (GDM_PID_FILE, O_WRONLY|O_CREAT|O_TRUNC|O_EXCL, 0644); |
---|
| 236 | if (pf < 0) { |
---|
| 237 | g_warning (_("Cannot write PID file %s: possibly out of diskspace: %s"), |
---|
| 238 | GDM_PID_FILE, |
---|
| 239 | g_strerror (errno)); |
---|
| 240 | |
---|
| 241 | return; |
---|
| 242 | } |
---|
| 243 | |
---|
| 244 | snprintf (pid, sizeof (pid), "%lu\n", (long unsigned) getpid ()); |
---|
| 245 | errno = 0; |
---|
| 246 | written = write (pf, pid, strlen (pid)); |
---|
| 247 | close (pf); |
---|
| 248 | |
---|
| 249 | if (written < 0) { |
---|
| 250 | g_warning (_("Cannot write PID file %s: possibly out of diskspace: %s"), |
---|
| 251 | GDM_PID_FILE, |
---|
| 252 | g_strerror (errno)); |
---|
| 253 | return; |
---|
| 254 | } |
---|
| 255 | |
---|
| 256 | g_atexit (delete_pid); |
---|
| 257 | } |
---|
| 258 | |
---|
| 259 | static void |
---|
| 260 | check_logdir (void) |
---|
| 261 | { |
---|
| 262 | struct stat statbuf; |
---|
| 263 | int r; |
---|
| 264 | const char *log_path; |
---|
| 265 | |
---|
| 266 | log_path = LOGDIR; |
---|
| 267 | |
---|
| 268 | r = g_stat (log_path, &statbuf); |
---|
| 269 | if (r < 0 || ! S_ISDIR (statbuf.st_mode)) { |
---|
| 270 | if (g_mkdir (log_path, 0755) < 0) { |
---|
| 271 | gdm_fail (_("Logdir %s does not exist or isn't a directory."), |
---|
| 272 | log_path); |
---|
| 273 | } |
---|
| 274 | g_chmod (log_path, S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH); |
---|
| 275 | } |
---|
| 276 | } |
---|
| 277 | |
---|
| 278 | static void |
---|
| 279 | check_servauthdir (const char *auth_path, |
---|
| 280 | struct stat *statbuf) |
---|
| 281 | { |
---|
| 282 | int r; |
---|
| 283 | |
---|
| 284 | /* Enter paranoia mode */ |
---|
| 285 | r = g_stat (auth_path, statbuf); |
---|
| 286 | if (r < 0) { |
---|
| 287 | gdm_fail (_("Authdir %s does not exist. Aborting."), auth_path); |
---|
| 288 | } |
---|
| 289 | |
---|
| 290 | if (! S_ISDIR (statbuf->st_mode)) { |
---|
| 291 | gdm_fail (_("Authdir %s is not a directory. Aborting."), auth_path); |
---|
| 292 | } |
---|
| 293 | } |
---|
| 294 | |
---|
| 295 | static void |
---|
| 296 | set_effective_user (uid_t uid) |
---|
| 297 | { |
---|
| 298 | int res; |
---|
| 299 | |
---|
| 300 | res = 0; |
---|
| 301 | |
---|
| 302 | if (geteuid () != uid) { |
---|
| 303 | res = seteuid (uid); |
---|
| 304 | } |
---|
| 305 | |
---|
| 306 | if (res != 0) { |
---|
| 307 | g_error ("Cannot set uid to %d: %s", |
---|
| 308 | (int)uid, |
---|
| 309 | g_strerror (errno)); |
---|
| 310 | } |
---|
| 311 | } |
---|
| 312 | |
---|
| 313 | static void |
---|
| 314 | set_effective_group (gid_t gid) |
---|
| 315 | { |
---|
| 316 | int res; |
---|
| 317 | |
---|
| 318 | res = 0; |
---|
| 319 | if (getegid () != gid) { |
---|
| 320 | res = setegid (gid); |
---|
| 321 | } |
---|
| 322 | |
---|
| 323 | if (res != 0) { |
---|
| 324 | g_error ("Cannot set gid to %d: %s", |
---|
| 325 | (int)gid, |
---|
| 326 | g_strerror (errno)); |
---|
| 327 | } |
---|
| 328 | } |
---|
| 329 | |
---|
| 330 | static void |
---|
| 331 | set_effective_user_group (uid_t uid, |
---|
| 332 | gid_t gid) |
---|
| 333 | { |
---|
| 334 | set_effective_user (0); |
---|
| 335 | set_effective_group (gid); |
---|
| 336 | if (uid != 0) { |
---|
| 337 | set_effective_user (0); |
---|
| 338 | } |
---|
| 339 | } |
---|
| 340 | |
---|
| 341 | static void |
---|
| 342 | gdm_daemon_check_permissions (uid_t uid, |
---|
| 343 | gid_t gid) |
---|
| 344 | { |
---|
| 345 | struct stat statbuf; |
---|
| 346 | const char *auth_path; |
---|
| 347 | |
---|
| 348 | auth_path = LOGDIR; |
---|
| 349 | |
---|
| 350 | /* Enter paranoia mode */ |
---|
| 351 | check_servauthdir (auth_path, &statbuf); |
---|
| 352 | |
---|
| 353 | set_effective_user_group (0, 0); |
---|
| 354 | |
---|
| 355 | /* Now set things up for us as */ |
---|
| 356 | chown (auth_path, 0, gid); |
---|
| 357 | g_chmod (auth_path, (S_IRWXU|S_IRWXG|S_ISVTX)); |
---|
| 358 | |
---|
| 359 | set_effective_user_group (uid, gid); |
---|
| 360 | |
---|
| 361 | /* Again paranoid */ |
---|
| 362 | check_servauthdir (auth_path, &statbuf); |
---|
| 363 | |
---|
| 364 | if G_UNLIKELY (statbuf.st_uid != 0 || statbuf.st_gid != gid) { |
---|
| 365 | gdm_fail (_("Authdir %s is not owned by user %d, group %d. Aborting."), |
---|
| 366 | auth_path, |
---|
| 367 | (int)uid, |
---|
| 368 | (int)gid); |
---|
| 369 | } |
---|
| 370 | |
---|
| 371 | if G_UNLIKELY (statbuf.st_mode != (S_IFDIR|S_IRWXU|S_IRWXG|S_ISVTX)) { |
---|
| 372 | gdm_fail (_("Authdir %s has wrong permissions %o. Should be %o. Aborting."), |
---|
| 373 | auth_path, |
---|
| 374 | statbuf.st_mode, |
---|
| 375 | (S_IRWXU|S_IRWXG|S_ISVTX)); |
---|
| 376 | } |
---|
| 377 | } |
---|
| 378 | |
---|
| 379 | static void |
---|
| 380 | gdm_daemon_change_user (uid_t *uidp, |
---|
| 381 | gid_t *gidp) |
---|
| 382 | { |
---|
| 383 | char *username; |
---|
| 384 | char *groupname; |
---|
| 385 | uid_t uid; |
---|
| 386 | gid_t gid; |
---|
| 387 | struct passwd *pwent; |
---|
| 388 | struct group *grent; |
---|
| 389 | |
---|
| 390 | username = NULL; |
---|
| 391 | groupname = NULL; |
---|
| 392 | uid = 0; |
---|
| 393 | gid = 0; |
---|
| 394 | |
---|
| 395 | gdm_settings_direct_get_string (GDM_KEY_USER, &username); |
---|
| 396 | gdm_settings_direct_get_string (GDM_KEY_GROUP, &groupname); |
---|
| 397 | |
---|
| 398 | if (username == NULL || groupname == NULL) { |
---|
| 399 | return; |
---|
| 400 | } |
---|
| 401 | |
---|
| 402 | g_debug ("Changing user:group to %s:%s", username, groupname); |
---|
| 403 | |
---|
| 404 | /* Lookup user and groupid for the GDM user */ |
---|
| 405 | pwent = getpwnam (username); |
---|
| 406 | |
---|
| 407 | /* Set uid and gid */ |
---|
| 408 | if G_UNLIKELY (pwent == NULL) { |
---|
| 409 | gdm_fail (_("Can't find the GDM user '%s'. Aborting!"), username); |
---|
| 410 | } else { |
---|
| 411 | uid = pwent->pw_uid; |
---|
| 412 | } |
---|
| 413 | |
---|
| 414 | if G_UNLIKELY (uid == 0) { |
---|
| 415 | gdm_fail (_("The GDM user should not be root. Aborting!")); |
---|
| 416 | } |
---|
| 417 | |
---|
| 418 | grent = getgrnam (groupname); |
---|
| 419 | |
---|
| 420 | if G_UNLIKELY (grent == NULL) { |
---|
| 421 | gdm_fail (_("Can't find the GDM group '%s'. Aborting!"), groupname); |
---|
| 422 | } else { |
---|
| 423 | gid = grent->gr_gid; |
---|
| 424 | } |
---|
| 425 | |
---|
| 426 | if G_UNLIKELY (gid == 0) { |
---|
| 427 | gdm_fail (_("The GDM group should not be root. Aborting!")); |
---|
| 428 | } |
---|
| 429 | |
---|
| 430 | /* gid remains 'gdm' */ |
---|
| 431 | set_effective_user_group (uid, gid); |
---|
| 432 | |
---|
| 433 | if (uidp != NULL) { |
---|
| 434 | *uidp = uid; |
---|
| 435 | } |
---|
| 436 | |
---|
| 437 | if (gidp != NULL) { |
---|
| 438 | *gidp = gid; |
---|
| 439 | } |
---|
| 440 | |
---|
| 441 | g_free (username); |
---|
| 442 | g_free (groupname); |
---|
| 443 | } |
---|
| 444 | |
---|
| 445 | static gboolean |
---|
| 446 | signal_cb (int signo, |
---|
| 447 | gpointer data) |
---|
| 448 | { |
---|
| 449 | int ret; |
---|
| 450 | |
---|
| 451 | g_debug ("Got callback for signal %d", signo); |
---|
| 452 | |
---|
| 453 | ret = TRUE; |
---|
| 454 | |
---|
| 455 | switch (signo) { |
---|
| 456 | case SIGFPE: |
---|
| 457 | case SIGPIPE: |
---|
| 458 | /* let the fatal signals interrupt us */ |
---|
| 459 | g_debug ("Caught signal %d, shutting down abnormally.", signo); |
---|
| 460 | ret = FALSE; |
---|
| 461 | |
---|
| 462 | break; |
---|
| 463 | |
---|
| 464 | case SIGINT: |
---|
| 465 | case SIGTERM: |
---|
| 466 | /* let the fatal signals interrupt us */ |
---|
| 467 | g_debug ("Caught signal %d, shutting down normally.", signo); |
---|
| 468 | ret = FALSE; |
---|
| 469 | |
---|
| 470 | break; |
---|
| 471 | |
---|
| 472 | case SIGHUP: |
---|
| 473 | g_debug ("Got HUP signal"); |
---|
| 474 | /* FIXME: |
---|
| 475 | * Reread config stuff like system config files, VPN service files, etc |
---|
| 476 | */ |
---|
| 477 | ret = TRUE; |
---|
| 478 | |
---|
| 479 | break; |
---|
| 480 | |
---|
| 481 | case SIGUSR1: |
---|
| 482 | g_debug ("Got USR1 signal"); |
---|
| 483 | /* FIXME: |
---|
| 484 | * Play with log levels or something |
---|
| 485 | */ |
---|
| 486 | ret = TRUE; |
---|
| 487 | |
---|
| 488 | gdm_log_toggle_debug (); |
---|
| 489 | |
---|
| 490 | break; |
---|
| 491 | |
---|
| 492 | default: |
---|
| 493 | g_debug ("Caught unhandled signal %d", signo); |
---|
| 494 | ret = TRUE; |
---|
| 495 | |
---|
| 496 | break; |
---|
| 497 | } |
---|
| 498 | |
---|
| 499 | return ret; |
---|
| 500 | } |
---|
| 501 | |
---|
| 502 | int |
---|
| 503 | main (int argc, |
---|
| 504 | char **argv) |
---|
| 505 | { |
---|
| 506 | GMainLoop *main_loop; |
---|
| 507 | GOptionContext *context; |
---|
| 508 | DBusGProxy *bus_proxy; |
---|
| 509 | DBusGConnection *connection; |
---|
| 510 | GError *error; |
---|
| 511 | int ret; |
---|
| 512 | gboolean res; |
---|
| 513 | gboolean xdmcp_enabled; |
---|
| 514 | GdmSignalHandler *signal_handler; |
---|
| 515 | static gboolean debug = FALSE; |
---|
| 516 | static gboolean do_timed_exit = FALSE; |
---|
| 517 | static gboolean print_version = FALSE; |
---|
| 518 | static gboolean fatal_warnings = FALSE; |
---|
| 519 | static GOptionEntry entries [] = { |
---|
| 520 | { "debug", 0, 0, G_OPTION_ARG_NONE, &debug, N_("Enable debugging code"), NULL }, |
---|
| 521 | { "fatal-warnings", 0, 0, G_OPTION_ARG_NONE, &fatal_warnings, N_("Make all warnings fatal"), NULL }, |
---|
| 522 | { "timed-exit", 0, 0, G_OPTION_ARG_NONE, &do_timed_exit, N_("Exit after a time - for debugging"), NULL }, |
---|
| 523 | { "version", 0, 0, G_OPTION_ARG_NONE, &print_version, N_("Print GDM version"), NULL }, |
---|
| 524 | |
---|
| 525 | { NULL } |
---|
| 526 | }; |
---|
| 527 | |
---|
| 528 | bindtextdomain (GETTEXT_PACKAGE, GNOMELOCALEDIR); |
---|
| 529 | textdomain (GETTEXT_PACKAGE); |
---|
| 530 | setlocale (LC_ALL, ""); |
---|
| 531 | |
---|
| 532 | ret = 1; |
---|
| 533 | |
---|
| 534 | gdm_set_fatal_warnings_if_unstable (); |
---|
| 535 | |
---|
| 536 | g_type_init (); |
---|
| 537 | |
---|
| 538 | context = g_option_context_new (_("GNOME Display Manager")); |
---|
| 539 | g_option_context_add_main_entries (context, entries, NULL); |
---|
| 540 | g_option_context_set_ignore_unknown_options (context, TRUE); |
---|
| 541 | |
---|
| 542 | error = NULL; |
---|
| 543 | res = g_option_context_parse (context, &argc, &argv, &error); |
---|
| 544 | g_option_context_free (context); |
---|
| 545 | if (! res) { |
---|
| 546 | g_warning ("%s", error->message); |
---|
| 547 | g_error_free (error); |
---|
| 548 | goto out; |
---|
| 549 | } |
---|
| 550 | |
---|
| 551 | if (fatal_warnings) { |
---|
| 552 | GLogLevelFlags fatal_mask; |
---|
| 553 | |
---|
| 554 | fatal_mask = g_log_set_always_fatal (G_LOG_FATAL_MASK); |
---|
| 555 | fatal_mask |= G_LOG_LEVEL_WARNING | G_LOG_LEVEL_CRITICAL; |
---|
| 556 | g_log_set_always_fatal (fatal_mask); |
---|
| 557 | } |
---|
| 558 | |
---|
| 559 | connection = get_system_bus (); |
---|
| 560 | if (connection == NULL) { |
---|
| 561 | goto out; |
---|
| 562 | } |
---|
| 563 | |
---|
| 564 | bus_proxy = get_bus_proxy (connection); |
---|
| 565 | if (bus_proxy == NULL) { |
---|
| 566 | g_warning ("Could not construct bus_proxy object; bailing out"); |
---|
| 567 | goto out; |
---|
| 568 | } |
---|
| 569 | |
---|
| 570 | if (! acquire_name_on_proxy (bus_proxy) ) { |
---|
| 571 | g_warning ("Could not acquire name; bailing out"); |
---|
| 572 | goto out; |
---|
| 573 | } |
---|
| 574 | |
---|
| 575 | gdm_log_init (); |
---|
| 576 | |
---|
| 577 | settings = gdm_settings_new (); |
---|
| 578 | if (settings == NULL) { |
---|
| 579 | g_warning ("Unable to initialize settings"); |
---|
| 580 | goto out; |
---|
| 581 | } |
---|
| 582 | |
---|
| 583 | if (! gdm_settings_direct_init (settings, GDMCONFDIR "/gdm.schemas", "/")) { |
---|
| 584 | g_warning ("Unable to initialize settings"); |
---|
| 585 | goto out; |
---|
| 586 | } |
---|
| 587 | |
---|
| 588 | gdm_log_set_debug (debug); |
---|
| 589 | |
---|
| 590 | gdm_daemon_change_user (&gdm_uid, &gdm_gid); |
---|
| 591 | gdm_daemon_check_permissions (gdm_uid, gdm_gid); |
---|
| 592 | |
---|
| 593 | set_effective_user_group (0, 0); |
---|
| 594 | check_logdir (); |
---|
| 595 | |
---|
| 596 | /* XDM compliant error message */ |
---|
| 597 | if (getuid () != 0) { |
---|
| 598 | /* make sure the pid file doesn't get wiped */ |
---|
| 599 | g_warning (_("Only root wants to run GDM")); |
---|
| 600 | exit (-1); |
---|
| 601 | } |
---|
| 602 | |
---|
| 603 | /* pid file */ |
---|
| 604 | delete_pid (); |
---|
| 605 | write_pid (); |
---|
| 606 | |
---|
| 607 | g_chdir (AUTHDIR); |
---|
| 608 | |
---|
| 609 | manager = gdm_manager_new (); |
---|
| 610 | |
---|
| 611 | if (manager == NULL) { |
---|
| 612 | goto out; |
---|
| 613 | } |
---|
| 614 | |
---|
| 615 | xdmcp_enabled = FALSE; |
---|
| 616 | gdm_settings_direct_get_boolean (GDM_KEY_XDMCP_ENABLE, &xdmcp_enabled); |
---|
| 617 | gdm_manager_set_xdmcp_enabled (manager, xdmcp_enabled); |
---|
| 618 | |
---|
| 619 | g_signal_connect (bus_proxy, |
---|
| 620 | "destroy", |
---|
| 621 | G_CALLBACK (bus_proxy_destroyed_cb), |
---|
| 622 | &manager); |
---|
| 623 | |
---|
| 624 | main_loop = g_main_loop_new (NULL, FALSE); |
---|
| 625 | |
---|
| 626 | signal_handler = gdm_signal_handler_new (); |
---|
| 627 | gdm_signal_handler_set_fatal_func (signal_handler, |
---|
| 628 | (GDestroyNotify)g_main_loop_quit, |
---|
| 629 | main_loop); |
---|
| 630 | gdm_signal_handler_add_fatal (signal_handler); |
---|
| 631 | gdm_signal_handler_add (signal_handler, SIGTERM, signal_cb, NULL); |
---|
| 632 | gdm_signal_handler_add (signal_handler, SIGINT, signal_cb, NULL); |
---|
| 633 | gdm_signal_handler_add (signal_handler, SIGFPE, signal_cb, NULL); |
---|
| 634 | gdm_signal_handler_add (signal_handler, SIGHUP, signal_cb, NULL); |
---|
| 635 | gdm_signal_handler_add (signal_handler, SIGUSR1, signal_cb, NULL); |
---|
| 636 | |
---|
| 637 | if (do_timed_exit) { |
---|
| 638 | g_timeout_add_seconds (30, (GSourceFunc) timed_exit_cb, main_loop); |
---|
| 639 | } |
---|
| 640 | |
---|
| 641 | gdm_manager_start (manager); |
---|
| 642 | |
---|
| 643 | g_main_loop_run (main_loop); |
---|
| 644 | |
---|
| 645 | g_debug ("GDM finished, cleaning up..."); |
---|
| 646 | |
---|
| 647 | if (manager != NULL) { |
---|
| 648 | g_object_unref (manager); |
---|
| 649 | } |
---|
| 650 | |
---|
| 651 | if (settings != NULL) { |
---|
| 652 | g_object_unref (settings); |
---|
| 653 | } |
---|
| 654 | |
---|
| 655 | if (signal_handler != NULL) { |
---|
| 656 | g_object_unref (signal_handler); |
---|
| 657 | } |
---|
| 658 | |
---|
| 659 | gdm_settings_direct_shutdown (); |
---|
| 660 | gdm_log_shutdown (); |
---|
| 661 | |
---|
| 662 | g_main_loop_unref (main_loop); |
---|
| 663 | |
---|
| 664 | ret = 0; |
---|
| 665 | |
---|
| 666 | out: |
---|
| 667 | |
---|
| 668 | return ret; |
---|
| 669 | } |
---|