diff options
Diffstat (limited to 'daemon/gdm.c')
| -rw-r--r-- | daemon/gdm.c | 4337 |
1 files changed, 0 insertions, 4337 deletions
diff --git a/daemon/gdm.c b/daemon/gdm.c deleted file mode 100644 index b6d73a03..00000000 --- a/daemon/gdm.c +++ /dev/null @@ -1,4337 +0,0 @@ -/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- - * - * GDM - The GNOME Display Manager - * Copyright (C) 1998, 1999, 2000 Martin K. Petersen <mkp@mkp.net> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ - -#include "config.h" - -#include <signal.h> -#include <limits.h> -#include <stdlib.h> -#include <unistd.h> -#if defined (_POSIX_PRIORITY_SCHEDULING) && defined (HAVE_SCHED_YIELD) -#include <sched.h> -#endif -#include <sys/types.h> -#include <sys/stat.h> -#include <sys/wait.h> -#include <sys/socket.h> -#include <sys/resource.h> -#include <netinet/in.h> -#include <arpa/inet.h> -#include <netdb.h> -#include <ctype.h> -#include <pwd.h> -#include <grp.h> -#include <fcntl.h> -#include <errno.h> -#include <locale.h> -#include <dirent.h> - -#ifdef HAVE_CHKAUTHATTR -#include <auth_attr.h> -#include <secdb.h> -#endif - -/* This should be moved to auth.c I suppose */ - -#include <X11/Xauth.h> -#include <glib/gi18n.h> -#include <glib-object.h> - -#include <gtk/gtk.h> - -/* Needed for signal handling */ -#include "gdm-common.h" - -#include "gdm.h" -#include "misc.h" -#include "slave.h" -#include "server.h" -#include "verify.h" -#include "display.h" -#include "choose.h" -#include "getvt.h" -#include "gdm-net.h" -#include "cookie.h" -#include "filecheck.h" -#include "errorgui.h" - -#include "gdm-socket-protocol.h" -#include "gdm-daemon-config.h" -#include "gdm-log.h" - -#include "xdmcp.h" - -#define DYNAMIC_ADD 0 -#define DYNAMIC_RELEASE 1 -#define DYNAMIC_REMOVE 2 - -#ifdef HAVE_LOGINDEVPERM -#include <libdevinfo.h> -#endif /* HAVE_LOGINDEVPERM */ - -/* Local functions */ -static void gdm_handle_message (GdmConnection *conn, - const gchar *msg, - gpointer data); -static void gdm_handle_user_message (GdmConnection *conn, - const gchar *msg, - gpointer data); -static void gdm_daemonify (void); -static void gdm_safe_restart (void); -static void gdm_try_logout_action (GdmDisplay *disp); -static void gdm_restart_now (void); -static void handle_flexi_server (GdmConnection *conn, - int type, - const gchar *server, - gboolean handled, - gboolean chooser, - const gchar *xnest_disp, - uid_t xnest_uid, - const gchar *xnest_auth_file, - const gchar *xnest_cookie, - const gchar *username); -static void custom_cmd_restart (long cmd_id); -static void custom_cmd_no_restart (long cmd_id); - -/* Global vars */ -gint flexi_servers = 0; /* Number of flexi servers */ -static pid_t extra_process = 0; /* An extra process. Used for quickie - processes, so that they also get whacked */ -static int extra_status = 0; /* Last status from the last extra process */ - -gboolean gdm_wait_for_go = FALSE; /* wait for a GO in the fifo */ - -static gboolean print_version = FALSE; /* print version number and quit */ -static gboolean preserve_ld_vars = FALSE; /* Preserve the ld environment variables */ -static gboolean no_daemon = FALSE; /* Do not daemonize */ -static gboolean no_console = FALSE; /* There are no static servers, this means, - don't run static servers and second, - don't display info on the console */ - -GdmConnection *fifoconn = NULL; /* Fifo connection */ -GdmConnection *pipeconn = NULL; /* slavepipe (handled just like Fifo for compatibility) connection */ -GdmConnection *unixconn = NULL; /* UNIX Socket connection */ -int slave_fifo_pipe_fd = -1; /* the slavepipe connection */ - -unsigned char *gdm_global_cookie = NULL; -unsigned char *gdm_global_bcookie = NULL; - -gboolean gdm_first_login = TRUE; - -static GdmLogoutAction safe_logout_action = GDM_LOGOUT_ACTION_NONE; - -/* set in the main function */ -gchar **stored_argv = NULL; -int stored_argc = 0; - -static gchar *config_file = NULL; -static gboolean gdm_restart_mode = FALSE; - -static GMainLoop *main_loop = NULL; - -static gboolean monte_carlo_sqrt2 = FALSE; - -/* - * lookup display number if the display number is - * exists then clear the remove flag and return TRUE - * otherwise return FALSE - */ -static gboolean -mark_display_exists (int num) -{ - GSList *li; - GSList *displays; - - displays = gdm_daemon_config_get_display_list (); - - for (li = displays; li != NULL; li = li->next) { - GdmDisplay *disp = li->data; - if (disp->dispnum == num) { - disp->removeconf = FALSE; - return TRUE; - } - } - return FALSE; -} - -/** - * gdm_daemonify: - * - * Detach gdm daemon from the controlling terminal - */ - -static void -gdm_daemonify (void) -{ - FILE *pf; - pid_t pid; - - pid = fork (); - if (pid > 0) { - const char *pidfile = GDM_PID_FILE; - - errno = 0; - if ((pf = gdm_safe_fopen_w (pidfile)) != NULL) { - errno = 0; - VE_IGNORE_EINTR (fprintf (pf, "%d\n", (int)pid)); - VE_IGNORE_EINTR (fclose (pf)); - if G_UNLIKELY (errno != 0) { - /* FIXME: how to handle this? */ - gdm_fdprintf (2, _("Cannot write PID file %s: possibly out of diskspace. Error: %s\n"), - pidfile, strerror (errno)); - gdm_error (_("Cannot write PID file %s: possibly out of diskspace. Error: %s"), - pidfile, strerror (errno)); - - } - } else if G_UNLIKELY (errno != 0) { - /* FIXME: how to handle this? */ - gdm_fdprintf (2, _("Cannot write PID file %s: possibly out of diskspace. Error: %s\n"), - pidfile, strerror (errno)); - gdm_error (_("Cannot write PID file %s: possibly out of diskspace. Error: %s"), - pidfile, strerror (errno)); - - } - - exit (EXIT_SUCCESS); - } - - if G_UNLIKELY (pid < 0) - gdm_fail (_("%s: fork () failed!"), "gdm_daemonify"); - - if G_UNLIKELY (setsid () < 0) - gdm_fail (_("%s: setsid () failed: %s!"), "gdm_daemonify", - strerror (errno)); - - VE_IGNORE_EINTR (g_chdir (gdm_daemon_config_get_value_string (GDM_KEY_SERV_AUTHDIR))); - umask (022); - - VE_IGNORE_EINTR (close (0)); - VE_IGNORE_EINTR (close (1)); - VE_IGNORE_EINTR (close (2)); - - gdm_open_dev_null (O_RDONLY); /* open stdin - fd 0 */ - gdm_open_dev_null (O_RDWR); /* open stdout - fd 1 */ - gdm_open_dev_null (O_RDWR); /* open stderr - fd 2 */ -} - -static void -gdm_start_first_unborn_local (int delay) -{ - GSList *li; - GSList *displays; - - displays = gdm_daemon_config_get_display_list (); - - /* tickle the random stuff */ - gdm_random_tick (); - - for (li = displays; li != NULL; li = li->next) { - GdmDisplay *d = li->data; - - if (d != NULL && - d->type == TYPE_STATIC && - d->dispstat == DISPLAY_UNBORN) { - GdmXserver *svr; - g_debug ("gdm_start_first_unborn_local: " - "Starting %s", d->name); - - /* well sleep at least 'delay' seconds - * before starting */ - d->sleep_before_run = delay; - - /* only the first static display has - * timed login going on */ - if (gdm_first_login) - d->timed_login_ok = TRUE; - - svr = gdm_server_resolve (d); - - if ( ! gdm_display_manage (d)) { - gdm_display_unmanage (d); - /* only the first static display where - we actually log in gets - autologged in */ - if (svr != NULL && - svr->handled && - ! svr->chooser) - gdm_first_login = FALSE; - } else { - /* only the first static display where - we actually log in gets - autologged in */ - if (svr != NULL && - svr->handled && - ! svr->chooser) - gdm_first_login = FALSE; - break; - } - } - } -} - -void -gdm_final_cleanup (void) -{ - GSList *list, *li; - const char *pidfile; - gboolean first; - GSList *displays; - - displays = gdm_daemon_config_get_display_list (); - - g_debug ("gdm_final_cleanup"); - - if (extra_process > 1) { - /* we sigterm extra processes, and we - * don't wait */ - kill (-(extra_process), SIGTERM); - extra_process = 0; - } - - /* First off whack all XDMCP and FLEXI_XNEST - slaves, we'll wait for them later */ - for (li = displays; li != NULL; li = li->next) { - GdmDisplay *d = li->data; - if (SERVER_IS_XDMCP (d) || - SERVER_IS_PROXY (d)) { - /* set to DEAD so that we won't kill it again */ - d->dispstat = DISPLAY_DEAD; - if (d->slavepid > 1) - kill (d->slavepid, SIGTERM); - } - } - - /* Now completely unmanage the static servers */ - first = TRUE; - list = g_slist_copy (displays); - /* somewhat of a hack to kill last server - * started first. This mostly makes things end up on - * the right vt */ - list = g_slist_reverse (list); - for (li = list; li != NULL; li = li->next) { - GdmDisplay *d = li->data; - if (SERVER_IS_XDMCP (d) || - SERVER_IS_PROXY (d)) - continue; - /* HACK! Wait 2 seconds between killing of static servers - * because X is stupid and full of races and will otherwise - * hang my keyboard */ - if ( ! first) { - /* there could be signals happening - here */ - gdm_sleep_no_signal (2); - } - first = FALSE; - gdm_display_unmanage (d); - } - g_slist_free (list); - - /* and now kill and wait for the XDMCP and FLEXI_XNEST - slaves. unmanage will not kill slaves we have already - killed unless a SIGTERM was sent in the meantime */ - - list = g_slist_copy (displays); - for (li = list; li != NULL; li = li->next) { - GdmDisplay *d = li->data; - if (SERVER_IS_XDMCP (d) || - SERVER_IS_PROXY (d)) - gdm_display_unmanage (d); - } - g_slist_free (list); - - /* Close stuff */ - - if (gdm_daemon_config_get_value_bool (GDM_KEY_XDMCP)) - gdm_xdmcp_close (); - - if (fifoconn != NULL) { - char *path; - gdm_connection_close (fifoconn); - path = g_build_filename (gdm_daemon_config_get_value_string (GDM_KEY_SERV_AUTHDIR), ".gdmfifo", NULL); - VE_IGNORE_EINTR (g_unlink (path)); - g_free (path); - fifoconn = NULL; - } - - if (pipeconn != NULL) { - gdm_connection_close (pipeconn); - pipeconn = NULL; - } - - if (slave_fifo_pipe_fd >= 0) { - VE_IGNORE_EINTR (close (slave_fifo_pipe_fd)); - slave_fifo_pipe_fd = -1; - } - - if (unixconn != NULL) { - gdm_connection_close (unixconn); - VE_IGNORE_EINTR (g_unlink (GDM_SUP_SOCKET)); - unixconn = NULL; - } - - pidfile = GDM_PID_FILE; - if (pidfile != NULL) { - VE_IGNORE_EINTR (g_unlink (pidfile)); - } - -#ifdef HAVE_LOGINDEVPERM - (void) di_devperm_logout ("/dev/console"); -#endif /* HAVE_LOGINDEVPERM */ -} - -#ifdef __sun -void -gdm_rmdir (char *thedir) -{ - DIR *odir; - struct stat buf; - struct dirent *dp; - char thefile[FILENAME_MAX]; - - if ((stat(thedir, &buf) == -1) || ! S_ISDIR(buf.st_mode)) - return ; - - if ((rmdir (thedir) == -1) && (errno == EEXIST)) - { - odir = opendir (thedir); - do { - errno = 0; - if ((dp = readdir (odir)) != NULL) - { - if (strcmp (dp->d_name, ".") == 0 || - strcmp (dp->d_name, "..") == 0) - continue ; - snprintf (thefile, FILENAME_MAX, "%s/%s", thedir, dp->d_name); - if (stat (thefile, &buf) == -1) - continue ; - if (S_ISDIR(buf.st_mode)) - gdm_rmdir (thefile); - else - g_unlink (thefile); - } - } while (dp != NULL); - closedir (odir); - rmdir (thedir); - } -} -#endif - -static gboolean -deal_with_x_crashes (GdmDisplay *d) -{ - gboolean just_abort = FALSE; - const char *failsafe = gdm_daemon_config_get_value_string (GDM_KEY_FAILSAFE_XSERVER); - const char *keepscrashing = gdm_daemon_config_get_value_string (GDM_KEY_X_KEEPS_CRASHING); - - if ( ! d->failsafe_xserver && - ! ve_string_empty (failsafe)) { - char *bin = ve_first_word (failsafe); - /* Yay we have a failsafe */ - if ( ! ve_string_empty (bin) && - g_access (bin, X_OK) == 0) { - gdm_info (_("%s: Trying failsafe X " - "server %s"), - "deal_with_x_crashes", - failsafe); - g_free (bin); - g_free (d->command); - d->command = g_strdup (failsafe); - d->failsafe_xserver = TRUE; - return TRUE; - } - g_free (bin); - } - - /* Eeek X keeps crashing, let's try the XKeepsCrashing script */ - if ( ! ve_string_empty (keepscrashing) && - g_access (keepscrashing, X_OK|R_OK) == 0) { - pid_t pid; - - gdm_info (_("%s: Running the " - "XKeepsCrashing script"), - "deal_with_x_crashes"); - - extra_process = pid = fork (); - if (pid < 0) - extra_process = 0; - - if (pid == 0) { - char *argv[2]; - char *xlog = gdm_make_filename (gdm_daemon_config_get_value_string (GDM_KEY_LOG_DIR), d->name, ".log"); - - gdm_unset_signals (); - - /* Also make a new process group so that we may use - * kill -(extra_process) to kill extra process and all its - * possible children */ - setsid (); - - if (gdm_daemon_config_get_value_bool (GDM_KEY_XDMCP)) - gdm_xdmcp_close (); - - gdm_close_all_descriptors (0 /* from */, -1 /* except */, -1 /* except2 */); - - /* No error checking here - if it's messed the best response - * is to ignore & try to continue */ - gdm_open_dev_null (O_RDONLY); /* open stdin - fd 0 */ - gdm_open_dev_null (O_RDWR); /* open stdout - fd 1 */ - gdm_open_dev_null (O_RDWR); /* open stderr - fd 2 */ - - argv[0] = (char *)gdm_daemon_config_get_value_string (GDM_KEY_X_KEEPS_CRASHING); - argv[1] = NULL; - - gdm_restoreenv (); - - /* unset DISPLAY and XAUTHORITY if they exist - * so that gdialog (if used) doesn't get confused */ - g_unsetenv ("DISPLAY"); - g_unsetenv ("XAUTHORITY"); - - /* some promised variables */ - g_setenv ("XLOG", xlog, TRUE); - g_setenv ("BINDIR", BINDIR, TRUE); - g_setenv ("SBINDIR", SBINDIR, TRUE); - g_setenv ("LIBEXECDIR", LIBEXECDIR, TRUE); - g_setenv ("SYSCONFDIR", GDMCONFDIR, TRUE); - - /* To enable gettext stuff in the script */ - g_setenv ("TEXTDOMAIN", GETTEXT_PACKAGE, TRUE); - g_setenv ("TEXTDOMAINDIR", GNOMELOCALEDIR, TRUE); - - if ( ! gdm_ok_console_language ()) { - g_unsetenv ("LANG"); - g_unsetenv ("LC_ALL"); - g_unsetenv ("LC_MESSAGES"); - g_setenv ("LANG", "C", TRUE); - g_setenv ("UNSAFE_TO_TRANSLATE", "yes", TRUE); - } - - VE_IGNORE_EINTR (execv (argv[0], argv)); - - /* yaikes! */ - _exit (32); - } else if (pid > 0) { - int status; - - if (extra_process > 1) { - int ret; - int killsignal = SIGTERM; - int storeerrno; - errno = 0; - ret = waitpid (extra_process, &status, WNOHANG); - do { - /* wait for some signal, yes this is a race */ - if (ret <= 0) - sleep (10); - errno = 0; - ret = waitpid (extra_process, &status, WNOHANG); - storeerrno = errno; - if ((ret <= 0) && gdm_daemon_config_signal_terminthup_was_notified ()) { - kill (-(extra_process), killsignal); - killsignal = SIGKILL; - } - } while (ret == 0 || (ret < 0 && storeerrno == EINTR)); - } - extra_process = 0; - - if (WIFEXITED (status) && - WEXITSTATUS (status) == 0) { - /* Yay, the user wants to try again, so - * here we go */ - return TRUE; - } else if (WIFEXITED (status) && - WEXITSTATUS (status) == 32) { - /* We couldn't run the script, just drop through */ - ; - } else { - /* Things went wrong. */ - just_abort = TRUE; - } - } - - /* if we failed to fork, or something else has happened, - * we fall through to the other options below */ - } - - /* if we have "open" we can talk to the user, not as user - * friendly as the above script, but getting there */ - if ( ! just_abort && - g_access (LIBEXECDIR "/gdmopen", X_OK) == 0) { - /* Shit if we knew what the program was to tell the user, - * the above script would have been defined and we'd run - * it for them */ - const char *error = - C_(N_("The X server (your graphical interface) " - "cannot be started. It is likely that it is not " - "set up correctly. You will need to log in on a " - "console and rerun the X configuration " - "application, then restart GDM.")); - gdm_text_message_dialog (error); - } /* else { - * At this point .... screw the user, we don't know how to - * talk to him. He's on some 'l33t system anyway, so syslog - * reading will do him good - * } */ - - gdm_error (_("Failed to start X server several times in a short time period; disabling display %s"), d->name); - - return FALSE; -} - -static gboolean -try_command (const char *command, - int *statusp) -{ - GError *error; - gboolean res; - int status; - - g_debug ("Running %s", command); - - error = NULL; - res = g_spawn_command_line_sync (command, NULL, NULL, &status, &error); - if (error != NULL) { - g_warning ("Command failed %s: %s", command, error->message); - g_error_free (error); - } - - *statusp = 0; - - if (WIFEXITED (status)) { - *statusp = WEXITSTATUS (status); - } - - return res; -} - -static gboolean -try_commands (const char **array) -{ - int i; - int status; - gboolean ret; - - ret = FALSE; - - /* the idea here is to try the first available command and return if it succeeded */ - - for (i = 0; array[i] != NULL; i++) { - if (try_command (array[i], &status)) { - ret = (status == 0); - - if (! ret) { - gdm_error (_("command failed %s: %d"), array[i], status); - } - - break; - } - } - - return ret; -} - -static void -suspend_machine (void) -{ - const gchar **suspend; - - suspend = gdm_daemon_config_get_value_string_array (GDM_KEY_SUSPEND); - - gdm_info (_("Master suspending...")); - - if (suspend == NULL) { - return; - } - - try_commands (suspend); -} - -#ifdef __linux__ -static void -change_to_first_and_clear (gboolean restart) -{ - gdm_change_vt (1); - VE_IGNORE_EINTR (close (0)); - VE_IGNORE_EINTR (close (1)); - VE_IGNORE_EINTR (close (2)); - VE_IGNORE_EINTR (open ("/dev/tty1", O_WRONLY)); - VE_IGNORE_EINTR (open ("/dev/tty1", O_WRONLY)); - VE_IGNORE_EINTR (open ("/dev/tty1", O_WRONLY)); - - g_setenv ("TERM", "linux", TRUE); - - /* evil hack that will get the fonts right */ - if (g_access ("/bin/bash", X_OK) == 0) - system ("/bin/bash -l -c /bin/true"); - - /* clear screen and set to red */ - printf ("\033[H\033[J\n\n\033[1m---\n\033[1;31m "); - - if (restart) - printf (_("System is restarting, please wait ...")); - else - printf (_("System is shutting down, please wait ...")); - /* set to black */ - printf ("\033[0m\n\033[1m---\033[0m\n\n"); -} -#endif /* __linux__ */ - -static void -halt_machine (void) -{ - const char **s; - - g_debug (_("Master halting...")); - - s = gdm_daemon_config_get_value_string_array (GDM_KEY_HALT); - - if (try_commands (s)) { - /* maybe these don't run but oh well - there isn't - really a good way to know a priori if the command - will succeed. */ - gdm_final_cleanup (); - VE_IGNORE_EINTR (g_chdir ("/")); -#ifdef __linux__ - change_to_first_and_clear (FALSE); -#endif /* __linux */ - - } -} - -static void -restart_machine (void) -{ - const char **s; - - g_debug (_("Restarting computer...")); - - s = gdm_daemon_config_get_value_string_array (GDM_KEY_REBOOT); - - if (try_commands (s)) { - gdm_final_cleanup (); - VE_IGNORE_EINTR (g_chdir ("/")); - -#ifdef __linux__ - change_to_first_and_clear (TRUE); -#endif /* __linux */ - - } -} - -static void -custom_cmd (long cmd_id) -{ - gchar * key_string; - - if (cmd_id < 0 || cmd_id >= GDM_CUSTOM_COMMAND_MAX) { - /* We are just feeling very paranoid */ - gdm_error (_("custom_cmd: Custom command index %ld outside permitted range [0,%d)"), - cmd_id, GDM_CUSTOM_COMMAND_MAX); - return; - } - - key_string = g_strdup_printf ("%s%ld=", GDM_KEY_CUSTOM_CMD_NO_RESTART_TEMPLATE, cmd_id); - if (gdm_daemon_config_get_value_bool (key_string)) - custom_cmd_no_restart (cmd_id); - else - custom_cmd_restart (cmd_id); - - g_free(key_string); -} - -static void -custom_cmd_restart (long cmd_id) -{ - gchar * key_string; - char **argv; - const char *s; - - g_debug (_("Executing custom command %ld with restart option..."), cmd_id); - - gdm_final_cleanup (); - VE_IGNORE_EINTR (g_chdir ("/")); - -#ifdef __linux__ - change_to_first_and_clear (TRUE); -#endif /* __linux */ - - key_string = g_strdup_printf ("%s%ld=", GDM_KEY_CUSTOM_CMD_TEMPLATE, cmd_id); - - argv = NULL; - s = gdm_daemon_config_get_value_string (key_string); - g_free (key_string); - if (s != NULL) { - g_shell_parse_argv (s, NULL, &argv, NULL); - } - - if (argv != NULL && argv[0] != NULL) - VE_IGNORE_EINTR (execv (argv[0], argv)); - - g_strfreev (argv); - - gdm_error (_("%s: Execution of custom command failed: %s"), - "gdm_child_action", strerror (errno)); -} - -static void -custom_cmd_no_restart (long cmd_id) -{ - pid_t pid; - - g_debug (_("Executing custom command %ld with no restart option ..."), cmd_id); - - pid = fork (); - - if (pid < 0) { - /*failed fork*/ - gdm_error (_("custom_cmd: forking process for custom command %ld failed"), cmd_id); - return; - } - else if (pid == 0) { - /* child */ - char **argv; - const char *s; - gchar *key_string; - - key_string = g_strdup_printf ("%s%ld=", GDM_KEY_CUSTOM_CMD_TEMPLATE, cmd_id); - - argv = NULL; - s = gdm_daemon_config_get_value_string (key_string); - g_free (key_string); - if (s != NULL) { - g_shell_parse_argv (s, NULL, &argv, NULL); - } - - if (argv != NULL && argv[0] != NULL) - VE_IGNORE_EINTR (execv (argv[0], argv)); - - g_strfreev (argv); - - gdm_error (_("%s: Execution of custom command failed: %s"), - "gdm_child_action", strerror (errno)); - _exit (0); - } - else { - /* parent */ - gint exitstatus = 0, status; - pid_t p_stat = waitpid (1, &exitstatus, WNOHANG); - if (p_stat > 0) { - if G_LIKELY (WIFEXITED (exitstatus)){ - status = WEXITSTATUS (exitstatus); - g_debug (_("custom_cmd: child %d returned %d"), p_stat, status); - } - return; - } - } -} - -static gboolean -gdm_cleanup_children (void) -{ - pid_t pid; - gint exitstatus = 0, status; - GdmDisplay *d = NULL; - gboolean crashed; - gboolean sysmenu; - - /* Pid and exit status of slave that died */ - pid = waitpid (-1, &exitstatus, WNOHANG); - - if (pid <= 0) - return FALSE; - - if G_LIKELY (WIFEXITED (exitstatus)) { - status = WEXITSTATUS (exitstatus); - crashed = FALSE; - g_debug ("gdm_cleanup_children: child %d returned %d", pid, status); - } else { - status = EXIT_SUCCESS; - crashed = TRUE; - if (WIFSIGNALED (exitstatus)) { - if (WTERMSIG (exitstatus) == SIGTERM || - WTERMSIG (exitstatus) == SIGINT) { - /* we send these signals, sometimes children don't handle them */ - g_debug ("gdm_cleanup_children: child %d died of signal %d (TERM/INT)", pid, - (int)WTERMSIG (exitstatus)); - } else { - gdm_error ("gdm_cleanup_children: child %d crashed of signal %d", pid, - (int)WTERMSIG (exitstatus)); - } - } else { - gdm_error ("gdm_cleanup_children: child %d crashed", pid); - } - } - - if (pid == extra_process) { - /* an extra process died, yay! */ - extra_process = 0; - extra_status = exitstatus; - return TRUE; - } - - /* Find out who this slave belongs to */ - d = gdm_display_lookup (pid); - - if (d == NULL) - return TRUE; - - /* whack connections about this display */ - if (unixconn != NULL) - gdm_kill_subconnections_with_display (unixconn, d); - - if G_UNLIKELY (crashed) { - gdm_error ("gdm_cleanup_children: Slave crashed, killing its " - "children"); - - if (d->sesspid > 1) - kill (-(d->sesspid), SIGTERM); - d->sesspid = 0; - if (d->greetpid > 1) - kill (-(d->greetpid), SIGTERM); - d->greetpid = 0; - if (d->chooserpid > 1) - kill (-(d->chooserpid), SIGTERM); - d->chooserpid = 0; - if (d->servpid > 1) - kill (d->servpid, SIGTERM); - d->servpid = 0; - - if (gdm_daemon_config_get_value_bool (GDM_KEY_DYNAMIC_XSERVERS)) { - /* XXX - This needs to be handled better */ - gdm_server_whack_lockfile (d); - } - - /* race avoider */ - gdm_sleep_no_signal (1); - } - - /* null all these, they are not valid most definately */ - d->servpid = 0; - d->sesspid = 0; - d->greetpid = 0; - d->chooserpid = 0; - - /* definately not logged in now */ - d->logged_in = FALSE; - g_free (d->login); - d->login = NULL; - - /* Declare the display dead */ - d->slavepid = 0; - d->dispstat = DISPLAY_DEAD; - - sysmenu = gdm_daemon_config_get_value_bool_per_display (GDM_KEY_SYSTEM_MENU, d->name); - - if ( ! sysmenu && - (status == DISPLAY_RESTARTGDM || - status == DISPLAY_REBOOT || - status == DISPLAY_SUSPEND || - status == DISPLAY_HALT)) { - gdm_info (_("Restart GDM, Restart machine, Suspend, or Halt request when there is no system menu from display %s"), d->name); - status = DISPLAY_REMANAGE; - } - - if ( ! d->attached && - (status == DISPLAY_RESTARTGDM || - status == DISPLAY_REBOOT || - status == DISPLAY_SUSPEND || - status == DISPLAY_HALT)) { - gdm_info (_("Restart GDM, Restart machine, Suspend or Halt request from a non-static display %s"), d->name); - status = DISPLAY_REMANAGE; - } - - if (status == DISPLAY_RUN_CHOOSER) { - /* use the chooser on the next run (but only if allowed) */ - if (sysmenu && - gdm_daemon_config_get_value_bool_per_display (GDM_KEY_CHOOSER_BUTTON, d->name)) - d->use_chooser = TRUE; - status = DISPLAY_REMANAGE; - /* go around the display loop detection, these are short - * sessions, so this decreases the chances of the loop - * detection being hit */ - d->last_loop_start_time = 0; - } - - if (status == DISPLAY_CHOSEN) { - /* forget about this indirect id, since this - * display will be dead very soon, and we don't want it - * to take the indirect display with it */ - d->indirect_id = 0; - status = DISPLAY_REMANAGE; - } - - if (status == DISPLAY_GREETERFAILED) { - if (d->managetime + 10 >= time (NULL)) { - d->try_different_greeter = TRUE; - } else { - d->try_different_greeter = FALSE; - } - /* now just remanage */ - status = DISPLAY_REMANAGE; - } else { - d->try_different_greeter = FALSE; - } - - /* checkout if we can actually do stuff */ - switch (status) { - case DISPLAY_REBOOT: - if (gdm_daemon_config_get_value_string_array (GDM_KEY_REBOOT) == NULL) - status = DISPLAY_REMANAGE; - break; - case DISPLAY_HALT: - if (gdm_daemon_config_get_value_string_array (GDM_KEY_HALT) == NULL) - status = DISPLAY_REMANAGE; - break; - case DISPLAY_SUSPEND: - if (gdm_daemon_config_get_value_string_array (GDM_KEY_SUSPEND) == NULL) - status = DISPLAY_REMANAGE; - break; - default: - break; - } - - /* if we crashed clear the theme */ - if (crashed) { - g_free (d->theme_name); - d->theme_name = NULL; - } - - start_autopsy: - - /* Autopsy */ - switch (status) { - - case DISPLAY_ABORT: /* Bury this display for good */ - gdm_info (_("%s: Aborting display %s"), - "gdm_child_action", d->name); - - gdm_try_logout_action (d); - gdm_safe_restart (); - - gdm_display_unmanage (d); - - /* If there are some pending statics, start them now */ - gdm_start_first_unborn_local (3 /* delay */); - break; - - case DISPLAY_REBOOT: /* Restart machine */ - restart_machine (); - - status = DISPLAY_REMANAGE; - goto start_autopsy; - break; - - case DISPLAY_HALT: /* Halt machine */ - halt_machine (); - - status = DISPLAY_REMANAGE; - goto start_autopsy; - break; - - case DISPLAY_SUSPEND: /* Suspend machine */ - /* XXX: this is ugly, why should there be a suspend like this, - * see GDM_SOP_SUSPEND_MACHINE */ - suspend_machine (); - - status = DISPLAY_REMANAGE; - goto start_autopsy; - break; - - case DISPLAY_RESTARTGDM: - gdm_restart_now (); - break; - - case DISPLAY_XFAILED: /* X sucks */ - g_debug ("X failed!"); - /* inform about error if needed */ - if (d->socket_conn != NULL) { - GdmConnection *conn = d->socket_conn; - d->socket_conn = NULL; - gdm_connection_set_close_notify (conn, NULL, NULL); - gdm_connection_write (conn, "ERROR 3 X failed\n"); - } - - gdm_try_logout_action (d); - gdm_safe_restart (); - - /* in remote/flexi case just drop to _REMANAGE */ - if (d->type == TYPE_STATIC) { - time_t now = time (NULL); - d->x_faileds++; - /* This really is likely the first time if it's been, - some time, say 5 minutes */ - if (now - d->last_x_failed > (5*60)) { - /* reset */ - d->x_faileds = 1; - d->last_x_failed = now; - /* well sleep at least 3 seconds before starting */ - d->sleep_before_run = 3; - } else if (d->x_faileds >= 3) { - g_debug ("gdm_child_action: dealing with X crashes"); - if ( ! deal_with_x_crashes (d)) { - g_debug ("gdm_child_action: Aborting display"); - /* an original way to deal with these things: - * "Screw you guys, I'm going home!" */ - gdm_display_unmanage (d); - - /* If there are some pending statics, - * start them now */ - gdm_start_first_unborn_local (3 /* delay */); - break; - } - g_debug ("gdm_child_action: Trying again"); - - /* reset */ - d->x_faileds = 0; - d->last_x_failed = 0; - } else { - /* well sleep at least 3 seconds before starting */ - d->sleep_before_run = 3; - } - /* go around the display loop detection, we're doing - * our own here */ - d->last_loop_start_time = 0; - } - /* fall through */ - - case DISPLAY_REMANAGE: /* Remanage display */ - default: - g_debug ("gdm_child_action: In remanage"); - - /* if we did REMANAGE, that means that we're no longer failing */ - if (status == DISPLAY_REMANAGE) { - /* reset */ - d->x_faileds = 0; - d->last_x_failed = 0; - } - - /* inform about error if needed */ - if (d->socket_conn != NULL) { - GdmConnection *conn = d->socket_conn; - d->socket_conn = NULL; - gdm_connection_set_close_notify (conn, NULL, NULL); - gdm_connection_write (conn, "ERROR 2 Startup errors\n"); - } - - gdm_try_logout_action (d); - gdm_safe_restart (); - - /* This is a static server so we start a new slave */ - if (d->type == TYPE_STATIC) { - if ( ! gdm_display_manage (d)) { - gdm_display_unmanage (d); - /* If there are some pending statics, - * start them now */ - gdm_start_first_unborn_local (3 /* delay */); - } - } else if (d->type == TYPE_FLEXI || d->type == TYPE_FLEXI_XNEST) { - /* if this was a chooser session and we have chosen a host, - then we don't want to unmanage, we want to manage and - choose that host */ - if (d->chosen_hostname != NULL || d->use_chooser) { - if ( ! gdm_display_manage (d)) { - gdm_display_unmanage (d); - } - } else { - /* else, this is a one time thing */ - gdm_display_unmanage (d); - } - /* Remote displays will send a request to be managed */ - } else /* TYPE_XDMCP */ { - gdm_display_unmanage (d); - } - - break; - } - - gdm_try_logout_action (d); - gdm_safe_restart (); - - return TRUE; -} - -static void -gdm_restart_now (void) -{ - gdm_info (_("GDM restarting ...")); - gdm_final_cleanup (); - gdm_restoreenv (); - VE_IGNORE_EINTR (execvp (stored_argv[0], stored_argv)); - gdm_error (_("Failed to restart self")); - _exit (1); -} - -static void -gdm_safe_restart (void) -{ - GSList *li; - GSList *displays; - - displays = gdm_daemon_config_get_display_list (); - - if ( ! gdm_restart_mode) - return; - - for (li = displays; li != NULL; li = li->next) { - GdmDisplay *d = li->data; - - if (d->logged_in) - return; - } - - gdm_restart_now (); -} - -static void -gdm_do_logout_action (GdmLogoutAction logout_action) -{ - switch (logout_action) { - case GDM_LOGOUT_ACTION_HALT: - halt_machine (); - break; - - case GDM_LOGOUT_ACTION_REBOOT: - restart_machine (); - break; - - case GDM_LOGOUT_ACTION_SUSPEND: - suspend_machine (); - break; - - default: - /* This is a bit ugly but its the only place we can - check for the range of values */ - if (logout_action >= GDM_LOGOUT_ACTION_CUSTOM_CMD_FIRST && - logout_action <= GDM_LOGOUT_ACTION_CUSTOM_CMD_FIRST) - custom_cmd (logout_action - GDM_LOGOUT_ACTION_CUSTOM_CMD_FIRST); - break; - } -} - -static void -gdm_try_logout_action (GdmDisplay *disp) -{ - GSList *li; - GSList *displays; - - displays = gdm_daemon_config_get_display_list (); - - if (disp != NULL && - disp->logout_action != GDM_LOGOUT_ACTION_NONE && - ! disp->logged_in) { - gdm_do_logout_action (disp->logout_action); - disp->logout_action = GDM_LOGOUT_ACTION_NONE; - return; - } - - if (safe_logout_action == GDM_LOGOUT_ACTION_NONE) - return; - - for (li = displays; li != NULL; li = li->next) { - GdmDisplay *d = li->data; - - if (d->logged_in) - return; - } - - gdm_do_logout_action (safe_logout_action); - safe_logout_action = GDM_LOGOUT_ACTION_NONE; -} - -static void -main_daemon_abrt (int sig) -{ - /* FIXME: note that this could mean out of memory */ - gdm_error (_("main daemon: Got SIGABRT. Something went very wrong. Going down!")); - gdm_final_cleanup (); - exit (EXIT_FAILURE); -} - -static gboolean -mainloop_sig_callback (int sig, gpointer data) -{ - /* signals are at somewhat random times aren't they? */ - gdm_random_tick (); - - g_debug ("mainloop_sig_callback: Got signal %d", (int)sig); - switch (sig) - { - case SIGCHLD: - while (gdm_cleanup_children ()) - ; - break; - - case SIGINT: - case SIGTERM: - g_debug ("mainloop_sig_callback: Got TERM/INT. Going down!"); - gdm_final_cleanup (); - exit (EXIT_SUCCESS); - break; - -#ifdef SIGXFSZ - case SIGXFSZ: - gdm_error ("main daemon: Hit file size rlimit, restarting!"); - gdm_restart_now (); - break; -#endif - -#ifdef SIGXCPU - case SIGXCPU: - gdm_error ("main daemon: Hit CPU rlimit, restarting!"); - gdm_restart_now (); - break; -#endif - - case SIGHUP: - gdm_restart_now (); - break; - - case SIGUSR1: - gdm_restart_mode = TRUE; - gdm_safe_restart (); - break; - - default: - break; - } - - return TRUE; -} - -/* - * main: The main daemon control - */ - -static void -store_argv (int argc, char *argv[]) -{ - int i; - - stored_argv = g_new0 (char *, argc + 1); - for (i = 0; i < argc; i++) - stored_argv[i] = g_strdup (argv[i]); - stored_argv[i] = NULL; - stored_argc = argc; -} - -static void -close_notify (gpointer data) -{ - GdmConnection **conn = data; - * conn = NULL; -} - -static void -create_connections (void) -{ - int p[2]; - gchar *path; - - path = g_build_filename (gdm_daemon_config_get_value_string (GDM_KEY_SERV_AUTHDIR), ".gdmfifo", NULL); - fifoconn = gdm_connection_open_fifo (path, 0660); - g_free (path); - - if G_LIKELY (fifoconn != NULL) { - gdm_connection_set_handler (fifoconn, - gdm_handle_message, - NULL /* data */, - NULL /* destroy_notify */); - gdm_connection_set_close_notify (fifoconn, - &fifoconn, - close_notify); - } - - if G_UNLIKELY (pipe (p) < 0) { - slave_fifo_pipe_fd = -1; - pipeconn = NULL; - } else { - slave_fifo_pipe_fd = p[1]; - pipeconn = gdm_connection_open_fd (p[0]); - } - - if G_LIKELY (pipeconn != NULL) { - gdm_connection_set_handler (pipeconn, - gdm_handle_message, - NULL /* data */, - NULL /* destroy_notify */); - gdm_connection_set_close_notify (pipeconn, - &pipeconn, - close_notify); - } else { - VE_IGNORE_EINTR (close (p[0])); - VE_IGNORE_EINTR (close (p[1])); - slave_fifo_pipe_fd = -1; - } - - unixconn = gdm_connection_open_unix (GDM_SUP_SOCKET, 0666); - - if G_LIKELY (unixconn != NULL) { - gdm_connection_set_handler (unixconn, - gdm_handle_user_message, - NULL /* data */, - NULL /* destroy_notify */); - gdm_connection_set_nonblock (unixconn, TRUE); - gdm_connection_set_close_notify (unixconn, - &unixconn, - close_notify); - } -} - -static void -calc_sqrt2 (void) -{ - unsigned long n = 0, h = 0; - double x; - printf ("\n"); - for (;;) { - x = g_random_double_range (1.0, 2.0); - if (x*x <= 2.0) - h++; - n++; - if ( ! (n & 0xfff)) { - double sqrttwo = 1.0 + ((double)h)/(double)n; - printf ("sqrt(2) ~~ %1.10f\t(1 + %lu/%lu) " - "iteration: %lu \r", - sqrttwo, h, n, n); - } - } -} - -GOptionEntry options [] = { - { "nodaemon", '\0', 0, G_OPTION_ARG_NONE, - &no_daemon, N_("Do not fork into the background"), NULL }, - { "no-console", '\0', 0, G_OPTION_ARG_NONE, - &no_console, N_("No console (static) servers to be run"), NULL }, - { "config", '\0', 0, G_OPTION_ARG_STRING, - &config_file, N_("Alternative GDM System Defaults configuration file"), N_("CONFIGFILE") }, - { "preserve-ld-vars", '\0', 0, G_OPTION_ARG_NONE, - &preserve_ld_vars, N_("Preserve LD_* variables"), NULL }, - { "version", '\0', 0, G_OPTION_ARG_NONE, - &print_version, N_("Print GDM version"), NULL }, - { "wait-for-go", '\0', 0, G_OPTION_ARG_NONE, - &gdm_wait_for_go, N_("Start the first X server but then halt until we get a GO in the fifo"), NULL }, - { "monte-carlo-sqrt2", 0, 0, G_OPTION_ARG_NONE, - &monte_carlo_sqrt2, NULL, NULL }, - { NULL } -}; - -static gboolean -linux_only_is_running (pid_t pid) -{ - char resolved_self[PATH_MAX]; - char resolved_running[PATH_MAX]; - - char *running = g_strdup_printf ("/proc/%lu/exe", (gulong)pid); - - if (realpath ("/proc/self/exe", resolved_self) == NULL) { - g_free (running); - /* probably not a linux system */ - return TRUE; - } - - if (realpath (running, resolved_running) == NULL) { - g_free (running); - /* probably not a linux system */ - return TRUE; - } - - g_free (running); - - if (strcmp (resolved_running, resolved_self) == 0) - return TRUE; - return FALSE; -} - -static void -ensure_desc_012 (void) -{ - int fd; - /* We here ensure descriptors 0, 1 and 2 - * we of course count on the fact that open - * opens the lowest available descriptor */ - for (;;) { - fd = gdm_open_dev_null (O_RDWR); - /* Once we are up to 3, we're beyond stdin, - * stdout and stderr */ - if (fd >= 3) { - VE_IGNORE_EINTR (close (fd)); - break; - } - } -} - -/* initially if we get a TERM or INT we just want to die, - but we want to also kill an extra process if it exists */ -static void -initial_term_int (int signal) -{ - if (extra_process > 1) - kill (-(extra_process), SIGTERM); - _exit (EXIT_FAILURE); -} - -static void -gdm_make_global_cookie (void) -{ - FILE *fp; - char *file; - mode_t oldmode; - - gdm_cookie_generate ((char **)&gdm_global_cookie, (char **)&gdm_global_bcookie); - - file = g_build_filename (gdm_daemon_config_get_value_string (GDM_KEY_SERV_AUTHDIR), ".cookie", NULL); - VE_IGNORE_EINTR (g_unlink (file)); - - oldmode = umask (077); - fp = gdm_safe_fopen_w (file); - umask (oldmode); - if G_UNLIKELY (fp == NULL) { - gdm_error (_("Can't open %s for writing"), file); - g_free (file); - return; - } - - VE_IGNORE_EINTR (fprintf (fp, "%s\n", gdm_global_cookie)); - - /* FIXME: What about out of disk space errors? */ - errno = 0; - VE_IGNORE_EINTR (fclose (fp)); - if G_UNLIKELY (errno != 0) { - gdm_error (_("Can't write to %s: %s"), file, - strerror (errno)); - } - - g_free (file); -} - -int -main (int argc, char *argv[]) -{ - FILE *pf; - sigset_t mask; - struct sigaction sig, child, abrt; - GOptionContext *ctx; - const char *pidfile; - int i; - - /* semi init pseudorandomness */ - gdm_random_tick (); - - /* We here ensure descriptors 0, 1 and 2 */ - ensure_desc_012 (); - - /* store all initial stuff, args, env, rlimits, runlevel */ - store_argv (argc, argv); - gdm_saveenv (); - gdm_get_initial_limits (); - - bindtextdomain (GETTEXT_PACKAGE, GNOMELOCALEDIR); - textdomain (GETTEXT_PACKAGE); - - setlocale (LC_ALL, ""); - - /* Initialize runtime environment */ - umask (022); - - g_type_init (); - - ctx = g_option_context_new (_("- The GNOME login manager")); - g_option_context_add_main_entries (ctx, options, _("main options")); - - /* preprocess the arguments to support the xdm style -nodaemon - * option - */ - for (i = 0; i < argc; i++) { - if (strcmp (argv[i], "-nodaemon") == 0) - argv[i] = (char *) "--nodaemon"; - } - - g_option_context_parse (ctx, &argc, &argv, NULL); - g_option_context_free (ctx); - - if (monte_carlo_sqrt2) { - calc_sqrt2 (); - return 0; - } - - if (print_version) { - printf ("GDM %s\n", VERSION); - fflush (stdout); - exit (0); - } - - gdm_log_init (); - /* Parse configuration file */ - gdm_daemon_config_parse (config_file, no_console); - gdm_log_set_debug (gdm_daemon_config_get_bool_for_id (GDM_ID_DEBUG)); - - /* XDM compliant error message */ - if G_UNLIKELY (getuid () != 0) { - /* make sure the pid file doesn't get wiped */ - gdm_error (_("Only root wants to run GDM\n")); - exit (-1); - } - - main_loop = g_main_loop_new (NULL, FALSE); - - /* initial TERM/INT handler */ - sig.sa_handler = initial_term_int; - sig.sa_flags = SA_RESTART; - sigemptyset (&sig.sa_mask); - - /* - * Do not call gdm_fail before calling gdm_config_parse () - * since the gdm_fail function uses config data - */ - if G_UNLIKELY (sigaction (SIGTERM, &sig, NULL) < 0) - gdm_fail (_("%s: Error setting up %s signal handler: %s"), - "main", "TERM", strerror (errno)); - - if G_UNLIKELY (sigaction (SIGINT, &sig, NULL) < 0) - gdm_fail (_("%s: Error setting up %s signal handler: %s"), - "main", "INT", strerror (errno)); - - /* get the name of the root user */ - gdm_root_user (); - - pidfile = GDM_PID_FILE; - - /* Check if another gdm process is already running */ - if (g_access (pidfile, R_OK) == 0) { - - /* Check if the existing process is still alive. */ - gint pidv; - - pf = fopen (pidfile, "r"); - - if (pf != NULL && - fscanf (pf, "%d", &pidv) == 1 && - kill (pidv, 0) == 0 && - linux_only_is_running (pidv)) { - /* make sure the pid file doesn't get wiped */ - VE_IGNORE_EINTR (fclose (pf)); - gdm_fail (_("GDM already running. Aborting!")); - } - - if (pf != NULL) - VE_IGNORE_EINTR (fclose (pf)); - } - - /* Become daemon unless started in -nodaemon mode or child of init */ - if (no_daemon || getppid () == 1) { - - /* Write pid to pidfile */ - errno = 0; - if ((pf = gdm_safe_fopen_w (pidfile)) != NULL) { - errno = 0; - VE_IGNORE_EINTR (fprintf (pf, "%d\n", (int)getpid ())); - VE_IGNORE_EINTR (fclose (pf)); - if (errno != 0) { - /* FIXME: how to handle this? */ - gdm_fdprintf (2, _("Cannot write PID file %s: possibly out of diskspace. Error: %s\n"), - pidfile, strerror (errno)); - gdm_error (_("Cannot write PID file %s: possibly out of diskspace. Error: %s"), - pidfile, strerror (errno)); - - } - } else if (errno != 0) { - /* FIXME: how to handle this? */ - gdm_fdprintf (2, _("Cannot write PID file %s: possibly out of diskspace. Error: %s\n"), - pidfile, strerror (errno)); - gdm_error (_("Cannot write PID file %s: possibly out of diskspace. Error: %s"), - pidfile, strerror (errno)); - - } - - VE_IGNORE_EINTR (g_chdir (gdm_daemon_config_get_value_string (GDM_KEY_SERV_AUTHDIR))); - umask (022); - } - else - gdm_daemonify (); - -#ifdef __sun - g_unlink (SDTLOGIN_DIR); - g_mkdir (SDTLOGIN_DIR, 0700); -#endif - - /* Signal handling */ - ve_signal_add (SIGCHLD, mainloop_sig_callback, NULL); - ve_signal_add (SIGTERM, mainloop_sig_callback, NULL); - ve_signal_add (SIGINT, mainloop_sig_callback, NULL); - ve_signal_add (SIGHUP, mainloop_sig_callback, NULL); - ve_signal_add (SIGUSR1, mainloop_sig_callback, NULL); - - sig.sa_handler = ve_signal_notify; - sig.sa_flags = SA_RESTART; - sigemptyset (&sig.sa_mask); - - if G_UNLIKELY (sigaction (SIGTERM, &sig, NULL) < 0) - gdm_fail (_("%s: Error setting up %s signal handler: %s"), - "main", "TERM", strerror (errno)); - - if G_UNLIKELY (sigaction (SIGINT, &sig, NULL) < 0) - gdm_fail (_("%s: Error setting up %s signal handler: %s"), - "main", "INT", strerror (errno)); - - if G_UNLIKELY (sigaction (SIGHUP, &sig, NULL) < 0) - gdm_fail (_("%s: Error setting up %s signal handler: %s"), - "main", "HUP", strerror (errno)); - - if G_UNLIKELY (sigaction (SIGUSR1, &sig, NULL) < 0) - gdm_fail (_("%s: Error setting up %s signal handler: %s"), - "main", "USR1", strerror (errno)); - - /* some process limit signals we catch and restart on, - note that we don't catch these in the slave, but then - we catch those in the main daemon as slave crashing - (terminated by signal), and we clean up appropriately */ -#ifdef SIGXCPU - ve_signal_add (SIGXCPU, mainloop_sig_callback, NULL); - if G_UNLIKELY (sigaction (SIGXCPU, &sig, NULL) < 0) - gdm_fail (_("%s: Error setting up %s signal handler: %s"), - "main", "XCPU", strerror (errno)); -#endif -#ifdef SIGXFSZ - ve_signal_add (SIGXFSZ, mainloop_sig_callback, NULL); - if G_UNLIKELY (sigaction (SIGXFSZ, &sig, NULL) < 0) - gdm_fail (_("%s: Error setting up %s signal handler: %s"), - "main", "XFSZ", strerror (errno)); -#endif - - /* cannot use mainloop for SIGABRT, the handler can never - return */ - abrt.sa_handler = main_daemon_abrt; - abrt.sa_flags = SA_RESTART; - sigemptyset (&abrt.sa_mask); - - if G_UNLIKELY (sigaction (SIGABRT, &abrt, NULL) < 0) - gdm_fail (_("%s: Error setting up %s signal handler: %s"), - "main", "ABRT", strerror (errno)); - - child.sa_handler = ve_signal_notify; - child.sa_flags = SA_RESTART|SA_NOCLDSTOP; - sigemptyset (&child.sa_mask); - sigaddset (&child.sa_mask, SIGCHLD); - - if G_UNLIKELY (sigaction (SIGCHLD, &child, NULL) < 0) - gdm_fail (_("%s: Error setting up CHLD signal handler"), "gdm_main"); - - sigemptyset (&mask); - sigaddset (&mask, SIGINT); - sigaddset (&mask, SIGTERM); - sigaddset (&mask, SIGCHLD); - sigaddset (&mask, SIGHUP); - sigaddset (&mask, SIGUSR1); - sigaddset (&mask, SIGABRT); -#ifdef SIGXCPU - sigaddset (&mask, SIGXCPU); -#endif -#ifdef SIGXFSZ - sigaddset (&mask, SIGXFSZ); -#endif - sigprocmask (SIG_UNBLOCK, &mask, NULL); - - gdm_signal_ignore (SIGUSR2); - gdm_signal_ignore (SIGPIPE); - - /* ignore power failures, up to user processes to - * handle things correctly */ -#ifdef SIGPWR - gdm_signal_ignore (SIGPWR); -#endif - /* can we ever even get this one? */ -#ifdef SIGLOST - gdm_signal_ignore (SIGLOST); -#endif - - g_debug ("gdm_main: Here we go..."); - -#ifdef HAVE_LOGINDEVPERM - di_devperm_login ("/dev/console", gdm_daemon_config_get_gdmuid (), gdm_daemon_config_get_gdmgid (), NULL); -#endif /* HAVE_LOGINDEVPERM */ - - /* Init XDMCP if applicable */ - if (gdm_daemon_config_get_value_bool (GDM_KEY_XDMCP) && ! gdm_wait_for_go) { - gdm_xdmcp_init (); - } - - create_connections (); - - /* make sure things (currently /tmp/.ICE-unix and /tmp/.X11-unix) - * are sane */ - gdm_ensure_sanity () ; - - /* Make us a unique global cookie to authenticate */ - gdm_make_global_cookie (); - - /* Start static X servers */ - gdm_start_first_unborn_local (0 /* delay */); - - /* Accept remote connections */ - if (gdm_daemon_config_get_value_bool (GDM_KEY_XDMCP) && ! gdm_wait_for_go) { - g_debug ("Accepting XDMCP connections..."); - gdm_xdmcp_run (); - } - - /* We always exit via exit (), and sadly we need to g_main_quit () - * at times not knowing if it's this main or a recursive one we're - * quitting. - */ - while (1) - { - g_main_loop_run (main_loop); - g_debug ("main: Exited main loop"); - } - - return EXIT_SUCCESS; /* Not reached */ -} - -static gboolean -order_exists (int order) -{ - GSList *li; - GSList *displays; - - displays = gdm_daemon_config_get_display_list (); - for (li = displays; li != NULL; li = li->next) { - GdmDisplay *d = li->data; - if (d->x_servers_order == order) - return TRUE; - } - return FALSE; -} - -static int -get_new_order (GdmDisplay *d) -{ - int order; - GSList *li; - GSList *displays; - - displays = gdm_daemon_config_get_display_list (); - /* first try the position in the 'displays' list as - * our order */ - for (order = 0, li = displays; li != NULL; order++, li = li->next) { - if (li->data == d) - break; - } - /* next make sure it's unique */ - while (order_exists (order)) - order++; - return order; -} - -static void -write_x_servers (GdmDisplay *d) -{ - FILE *fp; - char *file = gdm_make_filename (gdm_daemon_config_get_value_string (GDM_KEY_SERV_AUTHDIR), d->name, ".Xservers"); - int i; - int bogusname; - - if (d->x_servers_order < 0) - d->x_servers_order = get_new_order (d); - - fp = gdm_safe_fopen_w (file); - if G_UNLIKELY (fp == NULL) { - gdm_error (_("Can't open %s for writing"), file); - g_free (file); - return; - } - - for (bogusname = 0, i = 0; i < d->x_servers_order; bogusname++, i++) { - char buf[32]; - g_snprintf (buf, sizeof (buf), ":%d", bogusname); - if (strcmp (buf, d->name) == 0) - g_snprintf (buf, sizeof (buf), ":%d", ++bogusname); - VE_IGNORE_EINTR (fprintf (fp, "%s local /usr/X11R6/bin/Xbogus\n", buf)); - } - - if (SERVER_IS_LOCAL (d)) { - char **argv; - char *command; - int argc; - argc = 0; - argv = NULL; - gdm_server_resolve_command_line (d, - FALSE, /* resolve_flags */ - NULL, /* vtarg */ - &argc, - &argv); - command = g_strjoinv (" ", argv); - g_strfreev (argv); - VE_IGNORE_EINTR (fprintf (fp, "%s local %s\n", d->name, command)); - g_free (command); - } else { - VE_IGNORE_EINTR (fprintf (fp, "%s foreign\n", d->name)); - } - - /* FIXME: What about out of disk space errors? */ - errno = 0; - VE_IGNORE_EINTR (fclose (fp)); - if G_UNLIKELY (errno != 0) { - gdm_error (_("Can't write to %s: %s"), file, - strerror (errno)); - } - - g_free (file); -} - -static void -send_slave_ack_dialog_int (GdmDisplay *d, int type, int response) -{ - if (d->master_notify_fd >= 0) { - char *not; - - not = g_strdup_printf ("%c%c%d\n", GDM_SLAVE_NOTIFY_RESPONSE, type, response); - VE_IGNORE_EINTR (write (d->master_notify_fd, not, strlen (not))); - - g_free (not); - } - if (d->slavepid > 1) { - /* now yield the CPU as the other process has more - useful work to do then we do */ -#if defined (_POSIX_PRIORITY_SCHEDULING) && defined (HAVE_SCHED_YIELD) - sched_yield (); -#endif - } -} - -static void -send_slave_ack_dialog_char (GdmDisplay *d, int type, const char *resp) -{ - if (d->master_notify_fd >= 0) { - if (resp == NULL) { - char not[3]; - - not[0] = GDM_SLAVE_NOTIFY_RESPONSE; - not[1] = type; - not[2] = '\n'; - VE_IGNORE_EINTR (write (d->master_notify_fd, not, 3)); - } else { - char *not = g_strdup_printf ("%c%c%s\n", - GDM_SLAVE_NOTIFY_RESPONSE, - type, - resp); - VE_IGNORE_EINTR (write (d->master_notify_fd, not, strlen (not))); - g_free (not); - } - } - if (d->slavepid > 1) { - /* now yield the CPU as the other process has more - useful work to do then we do */ -#if defined (_POSIX_PRIORITY_SCHEDULING) && defined (HAVE_SCHED_YIELD) - sched_yield (); -#endif - } -} - -static void -send_slave_ack (GdmDisplay *d, const char *resp) -{ - if (d->master_notify_fd >= 0) { - if (resp == NULL) { - char not[2]; - not[0] = GDM_SLAVE_NOTIFY_ACK; - not[1] = '\n'; - VE_IGNORE_EINTR (write (d->master_notify_fd, not, 2)); - } else { - char *not = g_strdup_printf ("%c%s\n", - GDM_SLAVE_NOTIFY_ACK, - resp); - VE_IGNORE_EINTR (write (d->master_notify_fd, not, strlen (not))); - g_free (not); - } - } - if (d->slavepid > 1) { - kill (d->slavepid, SIGUSR2); - /* now yield the CPU as the other process has more - useful work to do then we do */ -#if defined (_POSIX_PRIORITY_SCHEDULING) && defined (HAVE_SCHED_YIELD) - sched_yield (); -#endif - } -} - -static void -send_slave_command (GdmDisplay *d, const char *command) -{ - if (d->master_notify_fd >= 0) { - char *cmd = g_strdup_printf ("%c%s\n", - GDM_SLAVE_NOTIFY_COMMAND, - command); - VE_IGNORE_EINTR (write (d->master_notify_fd, cmd, strlen (cmd))); - g_free (cmd); - } - if (d->slavepid > 1) { - kill (d->slavepid, SIGUSR2); - /* now yield the CPU as the other process has more - useful work to do then we do */ -#if defined (_POSIX_PRIORITY_SCHEDULING) && defined (HAVE_SCHED_YIELD) - sched_yield (); -#endif - } -} - -static void -gdm_handle_message (GdmConnection *conn, const char *msg, gpointer data) -{ - /* Evil!, all this for debugging? */ - if G_UNLIKELY (gdm_daemon_config_get_value_bool (GDM_KEY_DEBUG)) { - if (strncmp (msg, GDM_SOP_COOKIE " ", - strlen (GDM_SOP_COOKIE " ")) == 0) { - char *s = g_strndup - (msg, strlen (GDM_SOP_COOKIE " XXXX XX")); - /* cut off most of the cookie for "security" */ - g_debug ("Handling message: '%s...'", s); - g_free (s); - } else if (strncmp (msg, GDM_SOP_SYSLOG " ", - strlen (GDM_SOP_SYSLOG " ")) != 0) { - /* Don't print out the syslog message as it will - * be printed out anyway as that's the whole point - * of the message. */ - g_debug ("Handling message: '%s'", msg); - } - } - - if (strncmp (msg, GDM_SOP_CHOSEN " ", - strlen (GDM_SOP_CHOSEN " ")) == 0) { - gdm_choose_data (msg); - } else if (strncmp (msg, GDM_SOP_CHOSEN_LOCAL " ", - strlen (GDM_SOP_CHOSEN_LOCAL " ")) == 0) { - GdmDisplay *d; - long slave_pid; - char *p; - - if (sscanf (msg, GDM_SOP_CHOSEN_LOCAL " %ld", &slave_pid) - != 1) - return; - p = strchr (msg, ' '); - if (p != NULL) - p = strchr (p+1, ' '); - if (p == NULL) - return; - p++; - - /* Find out who this slave belongs to */ - d = gdm_display_lookup (slave_pid); - - if (d != NULL) { - g_free (d->chosen_hostname); - d->chosen_hostname = g_strdup (p); - g_debug ("Got CHOSEN_LOCAL == %s", p); - /* send ack */ - send_slave_ack (d, NULL); - } - } else if (strncmp (msg, GDM_SOP_XPID " ", - strlen (GDM_SOP_XPID " ")) == 0) { - GdmDisplay *d; - long slave_pid, pid; - - if (sscanf (msg, GDM_SOP_XPID " %ld %ld", &slave_pid, &pid) - != 2) - return; - - /* Find out who this slave belongs to */ - d = gdm_display_lookup (slave_pid); - - if (d != NULL) { - d->servpid = pid; - g_debug ("Got XPID == %ld", (long)pid); - /* send ack */ - send_slave_ack (d, NULL); - } - } else if (strncmp (msg, GDM_SOP_SESSPID " ", - strlen (GDM_SOP_SESSPID " ")) == 0) { - GdmDisplay *d; - long slave_pid, pid; - - if (sscanf (msg, GDM_SOP_SESSPID " %ld %ld", &slave_pid, &pid) - != 2) - return; - - /* Find out who this slave belongs to */ - d = gdm_display_lookup (slave_pid); - - if (d != NULL) { - d->sesspid = pid; - g_debug ("Got SESSPID == %ld", (long)pid); - /* send ack */ - send_slave_ack (d, NULL); - } - } else if (strncmp (msg, GDM_SOP_GREETPID " ", - strlen (GDM_SOP_GREETPID " ")) == 0) { - GdmDisplay *d; - long slave_pid, pid; - - if (sscanf (msg, GDM_SOP_GREETPID " %ld %ld", &slave_pid, &pid) - != 2) - return; - - /* Find out who this slave belongs to */ - d = gdm_display_lookup (slave_pid); - - if (d != NULL) { - d->greetpid = pid; - g_debug ("Got GREETPID == %ld", (long)pid); - /* send ack */ - send_slave_ack (d, NULL); - } - } else if (strncmp (msg, GDM_SOP_CHOOSERPID " ", - strlen (GDM_SOP_CHOOSERPID " ")) == 0) { - GdmDisplay *d; - long slave_pid, pid; - - if (sscanf (msg, GDM_SOP_CHOOSERPID " %ld %ld", - &slave_pid, &pid) != 2) - return; - - /* Find out who this slave belongs to */ - d = gdm_display_lookup (slave_pid); - - if (d != NULL) { - d->chooserpid = pid; - g_debug ("Got CHOOSERPID == %ld", (long)pid); - /* send ack */ - send_slave_ack (d, NULL); - } - } else if (strncmp (msg, GDM_SOP_LOGGED_IN " ", - strlen (GDM_SOP_LOGGED_IN " ")) == 0) { - GdmDisplay *d; - long slave_pid; - int logged_in; - if (sscanf (msg, GDM_SOP_LOGGED_IN " %ld %d", &slave_pid, - &logged_in) != 2) - return; - - /* Find out who this slave belongs to */ - d = gdm_display_lookup (slave_pid); - - if (d != NULL) { - d->logged_in = logged_in ? TRUE : FALSE; - g_debug ("Got logged in == %s", - d->logged_in ? "TRUE" : "FALSE"); - - /* whack connections about this display if a user - * just logged out since we don't want such - * connections persisting to be authenticated */ - if ( ! logged_in && unixconn != NULL) - gdm_kill_subconnections_with_display (unixconn, d); - - /* if the user just logged out, - * let's see if it's safe to restart */ - if ( ! d->logged_in) { - gdm_try_logout_action (d); - gdm_safe_restart (); - } - - /* send ack */ - send_slave_ack (d, NULL); - } - } else if (strncmp (msg, GDM_SOP_DISP_NUM " ", - strlen (GDM_SOP_DISP_NUM " ")) == 0) { - GdmDisplay *d; - long slave_pid; - int disp_num; - - if (sscanf (msg, GDM_SOP_DISP_NUM " %ld %d", - &slave_pid, &disp_num) != 2) - return; - - /* Find out who this slave belongs to */ - d = gdm_display_lookup (slave_pid); - - if (d != NULL) { - g_free (d->name); - d->name = g_strdup_printf (":%d", disp_num); - d->dispnum = disp_num; - g_debug ("Got DISP_NUM == %d", disp_num); - /* send ack */ - send_slave_ack (d, NULL); - } - } else if (strncmp (msg, GDM_SOP_VT_NUM " ", - strlen (GDM_SOP_VT_NUM " ")) == 0) { - GdmDisplay *d; - long slave_pid; - int vt_num; - - if (sscanf (msg, GDM_SOP_VT_NUM " %ld %d", - &slave_pid, &vt_num) != 2) - return; - - /* Find out who this slave belongs to */ - d = gdm_display_lookup (slave_pid); - - if (d != NULL) { - d->vt = vt_num; - g_debug ("Got VT_NUM == %d", vt_num); - /* send ack */ - send_slave_ack (d, NULL); - } - } else if (strncmp (msg, GDM_SOP_LOGIN " ", - strlen (GDM_SOP_LOGIN " ")) == 0) { - GdmDisplay *d; - long slave_pid; - char *p; - - if (sscanf (msg, GDM_SOP_LOGIN " %ld", - &slave_pid) != 1) - return; - p = strchr (msg, ' '); - if (p != NULL) - p = strchr (p+1, ' '); - if (p == NULL) - return; - - p++; - - /* Find out who this slave belongs to */ - d = gdm_display_lookup (slave_pid); - - if (d != NULL) { - g_free (d->login); - d->login = g_strdup (p); - g_debug ("Got LOGIN == %s", p); - /* send ack */ - send_slave_ack (d, NULL); - } - } else if (strncmp (msg, GDM_SOP_QUERYLOGIN " ", - strlen (GDM_SOP_QUERYLOGIN " ")) == 0) { - GdmDisplay *d; - long slave_pid; - char *p; - - if (sscanf (msg, GDM_SOP_QUERYLOGIN " %ld", - &slave_pid) != 1) - return; - p = strchr (msg, ' '); - if (p != NULL) - p = strchr (p+1, ' '); - if (p == NULL) - return; - - p++; - - /* Find out who this slave belongs to */ - d = gdm_display_lookup (slave_pid); - - if (d != NULL) { - GString *resp = NULL; - GSList *li; - GSList *displays; - - displays = gdm_daemon_config_get_display_list (); - g_debug ("Got QUERYLOGIN %s", p); - for (li = displays; li != NULL; li = li->next) { - GdmDisplay *di = li->data; - if (di->logged_in && - di->login != NULL && - strcmp (di->login, p) == 0) { - gboolean migratable = FALSE; - - if (resp == NULL) - resp = g_string_new (NULL); - else - resp = g_string_append_c (resp, ','); - - g_string_append (resp, di->name); - g_string_append_c (resp, ','); - - if (d->attached && di->attached && di->vt > 0) - migratable = TRUE; - else if (gdm_daemon_config_get_value_string (GDM_KEY_XDMCP_PROXY_RECONNECT) != NULL && - d->type == TYPE_XDMCP_PROXY && di->type == TYPE_XDMCP_PROXY) - migratable = TRUE; - - g_string_append_c (resp, migratable ? '1' : '0'); - } - } - - /* send ack */ - if (resp != NULL) { - send_slave_ack (d, resp->str); - g_string_free (resp, TRUE); - } else { - send_slave_ack (d, NULL); - } - } - } else if (strncmp (msg, GDM_SOP_MIGRATE " ", - strlen (GDM_SOP_MIGRATE " ")) == 0) { - GdmDisplay *d; - long slave_pid; - char *p; - GSList *li; - GSList *displays; - - displays = gdm_daemon_config_get_display_list (); - - if (sscanf (msg, GDM_SOP_MIGRATE " %ld", &slave_pid) != 1) - return; - p = strchr (msg, ' '); - if (p != NULL) - p = strchr (p+1, ' '); - if (p == NULL) - return; - - p++; - - /* Find out who this slave belongs to */ - d = gdm_display_lookup (slave_pid); - if (d == NULL) - return; - - g_debug ("Got MIGRATE %s", p); - for (li = displays; li != NULL; li = li->next) { - GdmDisplay *di = li->data; - if (di->logged_in && strcmp (di->name, p) == 0) { - if (d->attached && di->vt > 0) - gdm_change_vt (di->vt); - else if (d->type == TYPE_XDMCP_PROXY && di->type == TYPE_XDMCP_PROXY) - gdm_xdmcp_migrate (d, di); - } - } - send_slave_ack (d, NULL); - } else if (strncmp (msg, GDM_SOP_COOKIE " ", - strlen (GDM_SOP_COOKIE " ")) == 0) { - GdmDisplay *d; - long slave_pid; - char *p; - - if (sscanf (msg, GDM_SOP_COOKIE " %ld", - &slave_pid) != 1) - return; - p = strchr (msg, ' '); - if (p != NULL) - p = strchr (p+1, ' '); - if (p == NULL) - return; - - p++; - - /* Find out who this slave belongs to */ - d = gdm_display_lookup (slave_pid); - - if (d != NULL) { - g_free (d->cookie); - d->cookie = g_strdup (p); - g_debug ("Got COOKIE == <secret>"); - /* send ack */ - send_slave_ack (d, NULL); - } - } else if (strncmp (msg, GDM_SOP_AUTHFILE " ", - strlen (GDM_SOP_AUTHFILE " ")) == 0) { - GdmDisplay *d; - long slave_pid; - char *p; - - if (sscanf (msg, GDM_SOP_AUTHFILE " %ld", - &slave_pid) != 1) - return; - p = strchr (msg, ' '); - if (p != NULL) - p = strchr (p+1, ' '); - if (p == NULL) - return; - - p++; - - /* Find out who this slave belongs to */ - d = gdm_display_lookup (slave_pid); - - if (d != NULL) { - g_free (d->authfile); - d->authfile = g_strdup (p); - g_debug ("Got AUTHFILE == %s", d->authfile); - /* send ack */ - send_slave_ack (d, NULL); - } - } else if (strncmp (msg, GDM_SOP_FLEXI_ERR " ", - strlen (GDM_SOP_FLEXI_ERR " ")) == 0) { - GdmDisplay *d; - long slave_pid; - int err; - - if (sscanf (msg, GDM_SOP_FLEXI_ERR " %ld %d", - &slave_pid, &err) != 2) - return; - - /* Find out who this slave belongs to */ - d = gdm_display_lookup (slave_pid); - - if (d != NULL) { - char *error = NULL; - GdmConnection *conn = d->socket_conn; - d->socket_conn = NULL; - - if (conn != NULL) - gdm_connection_set_close_notify (conn, - NULL, NULL); - - if (err == 3) - error = "ERROR 3 X failed\n"; - else if (err == 4) - error = "ERROR 4 X too busy\n"; - else if (err == 5) - error = "ERROR 5 Nested display can't connect\n"; - else - error = "ERROR 999 Unknown error\n"; - if (conn != NULL) - gdm_connection_write (conn, error); - - g_debug ("Got FLEXI_ERR == %d", err); - /* send ack */ - send_slave_ack (d, NULL); - } - } else if (strncmp (msg, GDM_SOP_FLEXI_OK " ", - strlen (GDM_SOP_FLEXI_OK " ")) == 0) { - GdmDisplay *d; - long slave_pid; - - if (sscanf (msg, GDM_SOP_FLEXI_OK " %ld", - &slave_pid) != 1) - return; - - /* Find out who this slave belongs to */ - d = gdm_display_lookup (slave_pid); - - if (d != NULL) { - GdmConnection *conn = d->socket_conn; - d->socket_conn = NULL; - - if (conn != NULL) { - gdm_connection_set_close_notify (conn, - NULL, NULL); - if ( ! gdm_connection_printf (conn, "OK %s\n", d->name)) - gdm_display_unmanage (d); - } - - g_debug ("Got FLEXI_OK"); - /* send ack */ - send_slave_ack (d, NULL); - } - } else if (strcmp (msg, GDM_SOP_SOFT_RESTART) == 0) { - gdm_restart_mode = TRUE; - gdm_safe_restart (); - } else if (strcmp (msg, GDM_SOP_DIRTY_SERVERS) == 0) { - GSList *li; - GSList *displays; - - displays = gdm_daemon_config_get_display_list (); - for (li = displays; li != NULL; li = li->next) { - GdmDisplay *d = li->data; - send_slave_command (d, GDM_NOTIFY_DIRTY_SERVERS); - } - } else if (strcmp (msg, GDM_SOP_SOFT_RESTART_SERVERS) == 0) { - GSList *li; - GSList *displays; - - displays = gdm_daemon_config_get_display_list (); - for (li = displays; li != NULL; li = li->next) { - GdmDisplay *d = li->data; - send_slave_command (d, GDM_NOTIFY_SOFT_RESTART_SERVERS); - } - } else if (strncmp (msg, GDM_SOP_SYSLOG " ", - strlen (GDM_SOP_SYSLOG " ")) == 0) { - char *p; - long pid; - int type; - p = strchr (msg, ' '); - if (p == NULL) - return; - p++; - if (sscanf (p, "%ld", &pid) != 1) - return; - p = strchr (p, ' '); - if (p == NULL) - return; - p++; - if (sscanf (p, "%d", &type) != 1) - return; - - p = strchr (p, ' '); - if (p == NULL) - return; - p++; - - /* FIXME: use g_critical or g_debug when required */ - g_warning ("(child %ld) %s", pid, p); - } else if (strcmp (msg, GDM_SOP_START_NEXT_LOCAL) == 0) { - gdm_start_first_unborn_local (3 /* delay */); - } else if (strcmp (msg, GDM_SOP_HUP_ALL_GREETERS) == 0) { - /* probably shouldn't be done too often */ - GSList *li; - GSList *displays; - - displays = gdm_daemon_config_get_display_list (); - for (li = displays; li != NULL; li = li->next) { - GdmDisplay *d = li->data; - if (d->greetpid > 1) - kill (d->greetpid, SIGHUP); - else if (d->chooserpid > 1) - kill (d->chooserpid, SIGHUP); - } - } else if (strcmp (msg, GDM_SOP_GO) == 0) { - GSList *li; - gboolean old_wait = gdm_wait_for_go; - GSList *displays; - - displays = gdm_daemon_config_get_display_list (); - gdm_wait_for_go = FALSE; - for (li = displays; li != NULL; li = li->next) { - GdmDisplay *d = li->data; - send_slave_command (d, GDM_NOTIFY_GO); - } - /* Init XDMCP if applicable */ - if (old_wait && gdm_daemon_config_get_value_bool (GDM_KEY_XDMCP)) { - if (gdm_xdmcp_init ()) { - g_debug ("Accepting XDMCP connections..."); - gdm_xdmcp_run (); - } - } - } else if (strncmp (msg, GDM_SOP_WRITE_X_SERVERS " ", - strlen (GDM_SOP_WRITE_X_SERVERS " ")) == 0) { - GdmDisplay *d; - long slave_pid; - - if (sscanf (msg, GDM_SOP_WRITE_X_SERVERS " %ld", - &slave_pid) != 1) - return; - - /* Find out who this slave belongs to */ - d = gdm_display_lookup (slave_pid); - - if (d != NULL) { - write_x_servers (d); - - /* send ack */ - send_slave_ack (d, NULL); - } - } else if (strncmp (msg, GDM_SOP_SUSPEND_MACHINE " ", - strlen (GDM_SOP_SUSPEND_MACHINE " ")) == 0) { - GdmDisplay *d; - long slave_pid; - gboolean sysmenu; - - if (sscanf (msg, GDM_SOP_SUSPEND_MACHINE " %ld", &slave_pid) != 1) - return; - d = gdm_display_lookup (slave_pid); - - gdm_info (_("Master suspending...")); - - sysmenu = gdm_daemon_config_get_value_bool_per_display (GDM_KEY_SYSTEM_MENU, d->name); - if (sysmenu && gdm_daemon_config_get_value_string (GDM_KEY_SUSPEND) != NULL) { - suspend_machine (); - } - } else if (strncmp (msg, GDM_SOP_CHOSEN_THEME " ", - strlen (GDM_SOP_CHOSEN_THEME " ")) == 0) { - GdmDisplay *d; - long slave_pid; - const char *p; - - if (sscanf (msg, GDM_SOP_CHOSEN_THEME " %ld", &slave_pid) != 1) - return; - d = gdm_display_lookup (slave_pid); - - if (d != NULL) { - g_free (d->theme_name); - d->theme_name = NULL; - - /* Syntax errors are partially OK here, if there - was no theme argument we just wanted to clear the - theme field */ - p = strchr (msg, ' '); - if (p != NULL) { - p = strchr (p+1, ' '); - if (p != NULL) { - while (*p == ' ') - p++; - if ( ! ve_string_empty (p)) - d->theme_name = g_strdup (p); - } - } - - send_slave_ack (d, NULL); - } - } else if (strncmp (msg, GDM_SOP_CUSTOM_CMD " ", - strlen (GDM_SOP_CUSTOM_CMD " ")) == 0) { - GdmDisplay *d; - long slave_pid; - long cmd_id; - - if (sscanf (msg, GDM_SOP_CUSTOM_CMD " %ld %ld", &slave_pid, &cmd_id) != 2) - return; - d = gdm_display_lookup (slave_pid); - - if (d != NULL) { - custom_cmd (cmd_id); - send_slave_ack (d, NULL); - } - } else if (strcmp (msg, GDM_SOP_FLEXI_XSERVER) == 0) { - handle_flexi_server (NULL, TYPE_FLEXI, gdm_daemon_config_get_value_string (GDM_KEY_STANDARD_XSERVER), - TRUE /* handled */, - FALSE /* chooser */, - NULL, 0, NULL, NULL, NULL); - } else if (strncmp (msg, "opcode="GDM_SOP_SHOW_ERROR_DIALOG, - strlen ("opcode="GDM_SOP_SHOW_ERROR_DIALOG)) == 0) { - GdmDisplay *d; - GtkMessageType type; - char **list; - char *ptr; - char *error; - char *details_label; - char *details_file; - long slave_pid; - int uid, gid; - - list = g_strsplit (msg, "$$", -1); - - ptr = strchr (list[1], '='); - slave_pid = atol (ptr + 1); - - ptr = strchr (list[2], '='); - type = atoi (ptr + 1); - - ptr = strchr (list[3], '='); - error = g_malloc0 (strlen (ptr)); - strcpy (error, ptr + 1); - - ptr = strchr (list[4], '='); - details_label = g_malloc0 (strlen (ptr)); - strcpy (details_label, ptr + 1); - - ptr = strchr (list[5], '='); - details_file = g_malloc0 (strlen (ptr)); - strcpy (details_file, ptr + 1); - - ptr = strchr (list[6], '='); - uid = atoi (ptr + 1); - - ptr = strchr (list[7], '='); - gid = atoi (ptr + 1); - - d = gdm_display_lookup (slave_pid); - - if (d != NULL) { - if (GDM_AUTHFILE (d)) { - VE_IGNORE_EINTR (chmod (GDM_AUTHFILE (d), 0644)); - } - - /* FIXME: this is really bad */ - gdm_errorgui_error_box_full (d, type, error, details_label, details_file, 0, 0); - - if (GDM_AUTHFILE (d)) { - VE_IGNORE_EINTR (chmod (GDM_AUTHFILE (d), 0640)); - } - - send_slave_ack_dialog_char (d, GDM_SLAVE_NOTIFY_ERROR_RESPONSE, NULL); - } - - g_free (error); - g_free (details_label); - g_free (details_file); - g_strfreev (list); - } else if (strncmp (msg, "opcode="GDM_SOP_SHOW_YESNO_DIALOG, - strlen ("opcode="GDM_SOP_SHOW_YESNO_DIALOG)) == 0) { - GdmDisplay *d; - char **list; - char *ptr; - char *yesno_msg; - long slave_pid; - gboolean response_yesno; - - list = g_strsplit (msg, "$$", -1); - - ptr = strchr (list [1], '='); - slave_pid = atol (ptr + 1); - - ptr = strchr (list [2], '='); - yesno_msg = g_malloc0 (strlen (ptr)); - strcpy (yesno_msg, ptr + 1); - - d = gdm_display_lookup (slave_pid); - if (d != NULL) { - if (GDM_AUTHFILE (d)) { - VE_IGNORE_EINTR (chmod (GDM_AUTHFILE (d), 0644)); - } - - response_yesno = gdm_errorgui_failsafe_yesno (d, yesno_msg); - - send_slave_ack_dialog_int (d, GDM_SLAVE_NOTIFY_YESNO_RESPONSE, response_yesno); - - if (GDM_AUTHFILE (d)) { - VE_IGNORE_EINTR (chmod (GDM_AUTHFILE (d), 0640)); - } - } - - g_free (yesno_msg); - g_strfreev (list); - } else if (strncmp (msg, "opcode="GDM_SOP_SHOW_QUESTION_DIALOG, - strlen ("opcode="GDM_SOP_SHOW_QUESTION_DIALOG)) == 0) { - GdmDisplay *d; - char **list; - char *ptr; - char *question_msg; - char *response_question; - long slave_pid; - gboolean echo; - - list = g_strsplit (msg, "$$", -1); - - ptr = strchr (list [1], '='); - slave_pid = atol (ptr + 1); - - ptr = strchr (list [2], '='); - question_msg = g_malloc0 (strlen (ptr)); - strcpy (question_msg, ptr + 1); - - ptr = strchr (list [3], '='); - echo = atoi (ptr + 1); - - d = gdm_display_lookup (slave_pid); - if (d != NULL) { - if (GDM_AUTHFILE (d)) { - VE_IGNORE_EINTR (chmod (GDM_AUTHFILE (d), 0644)); - } - - response_question = gdm_errorgui_failsafe_question (d, question_msg, echo); - - send_slave_ack_dialog_char (d, GDM_SLAVE_NOTIFY_QUESTION_RESPONSE, response_question); - - if (GDM_AUTHFILE (d)) { - VE_IGNORE_EINTR (chmod (GDM_AUTHFILE (d), 0640)); - } - } - - g_free (question_msg); - g_strfreev (list); - } else if (strncmp (msg, "opcode="GDM_SOP_SHOW_ASKBUTTONS_DIALOG, - strlen ("opcode="GDM_SOP_SHOW_ASKBUTTONS_DIALOG)) == 0) { - GdmDisplay *d; - char *askbuttons_msg; - char **list; - char *ptr; - char *options[4]; - long slave_pid; - int i; - int response_askbuttons; - - list = g_strsplit (msg, "$$", -1); - - ptr = strchr (list [1], '='); - slave_pid = atol (ptr + 1); - - ptr = strchr (list [2], '='); - askbuttons_msg = g_malloc0 (strlen (ptr)); - strcpy (askbuttons_msg, ptr + 1); - - ptr = strchr (list [3], '='); - options[0] = g_malloc0 (strlen (ptr)); - strcpy (options[0], ptr + 1); - - ptr = strchr (list [4], '='); - options[1] = g_malloc0 (strlen (ptr)); - strcpy (options[1], ptr + 1); - - ptr = strchr (list [5], '='); - options[2] = g_malloc0 (strlen (ptr)); - strcpy (options[2], ptr + 1); - - ptr = strchr (list [6], '='); - options[3] = g_malloc0 (strlen (ptr)); - strcpy (options[3], ptr + 1); - - d = gdm_display_lookup (slave_pid); - if (d != NULL) { - if (GDM_AUTHFILE (d)) { - VE_IGNORE_EINTR (chmod (GDM_AUTHFILE (d), 0644)); - } - - response_askbuttons = gdm_errorgui_failsafe_ask_buttons (d, askbuttons_msg, options); - - send_slave_ack_dialog_int (d, GDM_SLAVE_NOTIFY_ASKBUTTONS_RESPONSE, response_askbuttons); - if (GDM_AUTHFILE (d)) { - VE_IGNORE_EINTR (chmod (GDM_AUTHFILE (d), 0640)); - } - } - - g_free (askbuttons_msg); - - for (i = 0; i < 3; i ++) - g_free (options[i]); - g_strfreev (list); - } -} - -/* extract second word and the rest of the string */ -static void -extract_dispname_uid_xauthfile_cookie (const char *msg, - char **dispname, - uid_t *uid, - char **xauthfile, - char **cookie) -{ - const char *p; - int i; - char *pp; - - *dispname = NULL; - *xauthfile = NULL; - *cookie = NULL; - - /* Get dispname */ - p = strchr (msg, ' '); - if (p == NULL) - return; - - while (*p == ' ') - p++; - - *dispname = g_strdup (p); - pp = strchr (*dispname, ' '); - if (pp != NULL) - *pp = '\0'; - - /* Get uid */ - p = strchr (p, ' '); - if (p == NULL) { - *dispname = NULL; - g_free (*dispname); - return; - } - while (*p == ' ') - p++; - - if (sscanf (p, "%d", &i) != 1) { - *dispname = NULL; - g_free (*dispname); - return; - } - *uid = i; - - /* Get cookie */ - p = strchr (p, ' '); - if (p == NULL) { - *dispname = NULL; - g_free (*dispname); - return; - } - while (*p == ' ') - p++; - - *cookie = g_strdup (p); - pp = strchr (*cookie, ' '); - if (pp != NULL) - *pp = '\0'; - - /* Get xauthfile */ - p = strchr (p, ' '); - if (p == NULL) { - *cookie = NULL; - g_free (*cookie); - *dispname = NULL; - g_free (*dispname); - return; - } - - while (*p == ' ') - p++; - - *xauthfile = g_strstrip (g_strdup (p)); - -} - -static void -close_conn (gpointer data) -{ - GdmDisplay *disp = data; - - /* We still weren't finished, so we want to whack this display */ - if (disp->socket_conn != NULL) { - disp->socket_conn = NULL; - gdm_display_unmanage (disp); - } -} - -static GdmDisplay * -find_display (const char *name) -{ - GSList *li; - GSList *displays; - - displays = gdm_daemon_config_get_display_list (); - - for (li = displays; li != NULL; li = li->next) { - GdmDisplay *disp = li->data; - if (disp->name != NULL && - strcmp (disp->name, name) == 0) - return disp; - } - return NULL; -} - -static char * -extract_dispnum (const char *addy) -{ - int num; - char *p; - - gdm_assert (addy != NULL); - - p = strchr (addy, ':'); - if (p == NULL) - return NULL; - - /* Whee! handles DECnet even if we don't do that */ - while (*p == ':') - p++; - - if (sscanf (p, "%d", &num) != 1) - return NULL; - - return g_strdup_printf ("%d", num); -} - -static char * -dehex_cookie (const char *cookie, int *len) -{ - /* it should be +1 really, but I'm paranoid */ - char *bcookie = g_new0 (char, (strlen (cookie) / 2) + 2); - int i; - const char *p; - - *len = 0; - - for (i = 0, p = cookie; - *p != '\0' && *(p+1) != '\0'; - i++, p += 2) { - unsigned int num; - if (sscanf (p, "%02x", &num) != 1) { - g_free (bcookie); - return NULL; - } - bcookie[i] = num; - } - *len = i; - return bcookie; -} - -/* This runs as the user who owns the file */ -static gboolean -check_cookie (const gchar *file, const gchar *disp, const gchar *cookie) -{ - Xauth *xa; - gchar *number; - gchar *bcookie; - int cookielen; - gboolean ret = FALSE; - int cnt = 0; - - FILE *fp = fopen (file, "r"); - if (fp == NULL) - return FALSE; - - number = extract_dispnum (disp); - if (number == NULL) - return FALSE; - bcookie = dehex_cookie (cookie, &cookielen); - if (bcookie == NULL) { - g_free (number); - return FALSE; - } - - while ((xa = XauReadAuth (fp)) != NULL) { - if (xa->number_length == strlen (number) && - strncmp (xa->number, number, xa->number_length) == 0 && - xa->name_length == strlen ("MIT-MAGIC-COOKIE-1") && - strncmp (xa->name, "MIT-MAGIC-COOKIE-1", - xa->name_length) == 0 && - xa->data_length == cookielen && - memcmp (xa->data, bcookie, cookielen) == 0) { - XauDisposeAuth (xa); - ret = TRUE; - break; - } - XauDisposeAuth (xa); - - /* just being ultra anal */ - cnt++; - if (cnt > 500) - break; - } - - g_free (number); - g_free (bcookie); - - VE_IGNORE_EINTR (fclose (fp)); - - return ret; -} - -static void -handle_flexi_server (GdmConnection *conn, - int type, - const char *server, - gboolean handled, - gboolean chooser, - const char *xnest_disp, - uid_t xnest_uid, - const char *xnest_auth_file, - const char *xnest_cookie, - const char *username) -{ - GdmDisplay *display; - gchar *bin; - uid_t server_uid = 0; - - g_debug ("flexi server: '%s'", server); - - if (gdm_wait_for_go) { - if (conn != NULL) - gdm_connection_write (conn, - "ERROR 1 No more flexi servers\n"); - return; - } - - if (type == TYPE_FLEXI_XNEST) { - gboolean authorized = TRUE; - struct passwd *pw; - gid_t oldgid = getegid (); - - pw = getpwuid (xnest_uid); - if (pw == NULL) { - if (conn != NULL) - gdm_connection_write (conn, - "ERROR 100 Not authenticated\n"); - return; - } - - /* paranoia */ - NEVER_FAILS_seteuid (0); - - if (setegid (pw->pw_gid) < 0) - NEVER_FAILS_setegid (gdm_daemon_config_get_gdmgid ()); - - if (seteuid (xnest_uid) < 0) { - if (conn != NULL) - gdm_connection_write (conn, - "ERROR 100 Not authenticated\n"); - return; - } - - gdm_assert (xnest_auth_file != NULL); - gdm_assert (xnest_disp != NULL); - gdm_assert (xnest_cookie != NULL); - - if (authorized && - ! gdm_auth_file_check ("handle_flexi_server", xnest_uid, xnest_auth_file, FALSE /* absentok */, NULL)) - authorized = FALSE; - - if (authorized && - ! check_cookie (xnest_auth_file, - xnest_disp, - xnest_cookie)) { - authorized = FALSE; - } - - /* this must always work, thus the asserts */ - NEVER_FAILS_root_set_euid_egid (0, oldgid); - - if (! authorized) { - /* Sorry dude, you're not doing something - * right */ - if (conn != NULL) - gdm_connection_write (conn, - "ERROR 100 Not authenticated\n"); - return; - } - - server_uid = xnest_uid; - } - - if (flexi_servers >= gdm_daemon_config_get_value_int (GDM_KEY_FLEXIBLE_XSERVERS)) { - if (conn != NULL) - gdm_connection_write (conn, - "ERROR 1 No more flexi servers\n"); - return; - } - - bin = ve_first_word (server); - if (ve_string_empty (server) || - g_access (bin, X_OK) != 0) { - g_free (bin); - if (conn != NULL) - gdm_connection_write (conn, - "ERROR 6 No server binary\n"); - return; - } - g_free (bin); - - display = gdm_server_alloc (-1, server); - if G_UNLIKELY (display == NULL) { - if (conn != NULL) - gdm_connection_write (conn, - "ERROR 2 Startup errors\n"); - return; - } - - /* It is kind of ugly that we don't use - the standard resolution for this, but - oh well, this makes other things simpler */ - display->handled = handled; - display->use_chooser = chooser; - - if (type == TYPE_FLEXI_XNEST) { - GdmDisplay *parent; - gchar *disp, *p; - gdm_assert (xnest_disp != NULL); - - disp = g_strdup (xnest_disp); - /* whack the screen info */ - p = strchr (disp, ':'); - if (p != NULL) - p = strchr (p+1, '.'); - if (p != NULL) - *p = '\0'; - /* if it's on one of the attached displays we started, - * it's on the console, else it's not (it could be but - * we aren't sure and we don't want to be fooled) */ - parent = find_display (disp); - if (/* paranoia */xnest_disp[0] == ':' && - parent != NULL && - parent->attached) - display->attached = TRUE; - else - display->attached = FALSE; - g_free (disp); - - display->server_uid = server_uid; - } - - flexi_servers++; - - display->preset_user = g_strdup (username); - display->type = type; - display->socket_conn = conn; - display->parent_disp = g_strdup (xnest_disp); - display->parent_auth_file = g_strdup (xnest_auth_file); - if (conn != NULL) - gdm_connection_set_close_notify (conn, display, close_conn); - gdm_daemon_config_display_list_append (display); - - if ( ! gdm_display_manage (display)) { - gdm_display_unmanage (display); - if (conn != NULL) - gdm_connection_write (conn, - "ERROR 2 Startup errors\n"); - return; - } - /* Now we wait for the server to start up (or not) */ -} - -static void -handle_dynamic_server (GdmConnection *conn, int type, gchar *key) -{ - GdmDisplay *disp; - int disp_num; - gchar *msg; - gchar *full; - gchar *val; - - if (!(gdm_daemon_config_get_value_bool (GDM_KEY_DYNAMIC_XSERVERS))) { - gdm_connection_write (conn, "ERROR 200 Dynamic Displays not allowed\n"); - return; - } - - if ( ! GDM_CONN_AUTH_GLOBAL(conn)) { - gdm_info (_("DYNAMIC request denied: " "Not authenticated")); - gdm_connection_write (conn, "ERROR 100 Not authenticated\n"); - return; - } - - if (key == NULL) { - gdm_connection_write (conn, "ERROR 1 Bad display number <NULL>\n"); - return; - } else if ( !(isdigit (*key))) { - msg = g_strdup_printf ("ERROR 1 Bad display number <%s>\n", key); - gdm_connection_write (conn, msg); - g_free (msg); - return; - } - disp_num = atoi (key); - - if (type == DYNAMIC_ADD) { - /* prime an X server for launching */ - - if (mark_display_exists (disp_num)) { - /* need to skip starting this one again */ - gdm_connection_write (conn, "ERROR 2 Existing display\n"); - return; - } - - full = strchr (key, '='); - if (full == NULL || *(full + 1) == 0) { - gdm_connection_write (conn, "ERROR 3 No server string\n"); - return; - } - - val = full + 1; - disp = gdm_server_alloc (disp_num, val); - - if (disp == NULL) { - gdm_connection_write (conn, "ERROR 4 Display startup failure\n"); - return; - } - - gdm_daemon_config_display_list_insert (disp); - - disp->dispstat = DISPLAY_CONFIG; - disp->removeconf = FALSE; - - if (disp_num > gdm_daemon_config_get_high_display_num ()) - gdm_daemon_config_set_high_display_num (disp_num); - - gdm_connection_write (conn, "OK\n"); - return; - } - - if (type == DYNAMIC_REMOVE) { - GSList *li; - GSList *nli; - GSList *displays; - - displays = gdm_daemon_config_get_display_list (); - - /* shutdown a dynamic X server */ - - for (li = displays; li != NULL; li = nli) { - disp = li->data; - nli = li->next; - if (disp->dispnum == disp_num) { - disp->removeconf = TRUE; - gdm_display_unmanage (disp); - gdm_connection_write (conn, "OK\n"); - return; - } - } - - msg = g_strdup_printf ("ERROR 1 Bad display number <%d>\n", disp_num); - gdm_connection_write (conn, msg); - return; - } - - if (type == DYNAMIC_RELEASE) { - /* cause the newly configured X servers to actually run */ - GSList *li; - GSList *nli; - gboolean found = FALSE; - GSList *displays; - - displays = gdm_daemon_config_get_display_list (); - - for (li = displays; li != NULL; li = nli) { - GdmDisplay *disp = li->data; - nli = li->next; - if ((disp->dispnum == disp_num) && - (disp->dispstat == DISPLAY_CONFIG)) { - disp->dispstat = DISPLAY_UNBORN; - - if ( ! gdm_display_manage (disp)) { - gdm_display_unmanage (disp); - } - found = TRUE; - } - } - - if (found) - gdm_connection_write (conn, "OK\n"); - else { - msg = g_strdup_printf ("ERROR 1 Bad display number <%d>\n", disp_num); - gdm_connection_write (conn, msg); - } - - /* Now we wait for the server to start up (or not) */ - return; - } -} - -static void -sup_handle_auth_local (GdmConnection *conn, - const char *msg, - gpointer data) -{ - GSList *li; - char *cookie; - GSList *displays; - - cookie = g_strdup (&msg[strlen (GDM_SUP_AUTH_LOCAL " ")]); - - displays = gdm_daemon_config_get_display_list (); - - g_strstrip (cookie); - if (strlen (cookie) != 16*2) /* 16 bytes in hex form */ { - /* evil, just whack the connection in this case */ - gdm_connection_write (conn, - "ERROR 100 Not authenticated\n"); - gdm_connection_close (conn); - g_free (cookie); - return; - } - /* check if cookie matches one of the attached displays */ - for (li = displays; li != NULL; li = li->next) { - GdmDisplay *disp = li->data; - if (disp->attached && - disp->cookie != NULL && - g_ascii_strcasecmp (disp->cookie, cookie) == 0) { - g_free (cookie); - GDM_CONNECTION_SET_USER_FLAG - (conn, GDM_SUP_FLAG_AUTHENTICATED); - gdm_connection_set_display (conn, disp); - gdm_connection_write (conn, "OK\n"); - return; - } - } - - if (gdm_global_cookie != NULL && - g_ascii_strcasecmp ((gchar *) gdm_global_cookie, cookie) == 0) { - g_free (cookie); - GDM_CONNECTION_SET_USER_FLAG - (conn, GDM_SUP_FLAG_AUTH_GLOBAL); - gdm_connection_write (conn, "OK\n"); - return; - } - - /* Hmmm, perhaps this is better defined behaviour */ - GDM_CONNECTION_UNSET_USER_FLAG - (conn, GDM_SUP_FLAG_AUTHENTICATED); - GDM_CONNECTION_UNSET_USER_FLAG - (conn, GDM_SUP_FLAG_AUTH_GLOBAL); - gdm_connection_set_display (conn, NULL); - gdm_connection_write (conn, "ERROR 100 Not authenticated\n"); - g_free (cookie); -} - -static void -sup_handle_attached_servers (GdmConnection *conn, - const char *msg, - gpointer data) -{ - GString *retMsg; - GSList *li; - const gchar *sep = " "; - char *key; - int msgLen=0; - GSList *displays; - - displays = gdm_daemon_config_get_display_list (); - - if (strncmp (msg, GDM_SUP_ATTACHED_SERVERS, - strlen (GDM_SUP_ATTACHED_SERVERS)) == 0) - msgLen = strlen (GDM_SUP_ATTACHED_SERVERS); - else if (strncmp (msg, GDM_SUP_CONSOLE_SERVERS, - strlen (GDM_SUP_CONSOLE_SERVERS)) == 0) - msgLen = strlen (GDM_SUP_CONSOLE_SERVERS); - - key = g_strdup (&msg[msgLen]); - g_strstrip (key); - - retMsg = g_string_new ("OK"); - for (li = displays; li != NULL; li = li->next) { - GdmDisplay *disp = li->data; - - if ( ! disp->attached) - continue; - if (!(strlen (key)) || (g_pattern_match_simple (key, disp->command))) { - g_string_append_printf (retMsg, "%s%s,%s,", sep, - ve_sure_string (disp->name), - ve_sure_string (disp->login)); - sep = ";"; - if (disp->type == TYPE_FLEXI_XNEST) { - g_string_append (retMsg, ve_sure_string (disp->parent_disp)); - } else { - g_string_append_printf (retMsg, "%d", disp->vt); - } - } - } - - g_string_append (retMsg, "\n"); - gdm_connection_write (conn, retMsg->str); - g_free (key); - g_string_free (retMsg, TRUE); -} - -static void -sup_handle_get_server_details (GdmConnection *conn, - const char *msg, - gpointer data) -{ - - const gchar *server = &msg[strlen (GDM_SUP_GET_SERVER_DETAILS " ")]; - gchar **splitstr = g_strsplit (server, " ", 2); - GdmXserver *svr = gdm_daemon_config_find_xserver ((gchar *)splitstr[0]); - - if (svr != NULL) { - if (g_strcasecmp (splitstr[1], "ID") == 0) - gdm_connection_printf (conn, "OK %s\n", svr->id); - else if (g_strcasecmp (splitstr[1], "NAME") == 0) - gdm_connection_printf (conn, "OK %s\n", svr->name); - else if (g_strcasecmp (splitstr[1], "COMMAND") == 0) - gdm_connection_printf (conn, "OK %s\n", svr->command); - else if (g_strcasecmp (splitstr[1], "PRIORITY") == 0) - gdm_connection_printf (conn, "OK %d\n", svr->priority); - else if (g_strcasecmp (splitstr[1], "FLEXIBLE") == 0 && - svr->flexible) - gdm_connection_printf (conn, "OK true\n"); - else if (g_strcasecmp (splitstr[1], "FLEXIBLE") == 0 && - !svr->flexible) - gdm_connection_printf (conn, "OK false\n"); - else if (g_strcasecmp (splitstr[1], "CHOOSABLE") == 0 && - svr->choosable) - gdm_connection_printf (conn, "OK true\n"); - else if (g_strcasecmp (splitstr[1], "CHOOSABLE") == 0 && - !svr->choosable) - gdm_connection_printf (conn, "OK false\n"); - else if (g_strcasecmp (splitstr[1], "HANDLED") == 0 && - svr->handled) - gdm_connection_printf (conn, "OK true\n"); - else if (g_strcasecmp (splitstr[1], "HANDLED") == 0 && - !svr->handled) - gdm_connection_printf (conn, "OK false\n"); - else if (g_strcasecmp (splitstr[1], "CHOOSER") == 0 && - svr->chooser) - gdm_connection_printf (conn, "OK true\n"); - else if (g_strcasecmp (splitstr[1], "CHOOSER") == 0 && - !svr->chooser) - gdm_connection_printf (conn, "OK false\n"); - else - gdm_connection_printf (conn, "ERROR 2 Key not valid\n"); - - g_strfreev (splitstr); - } else { - gdm_connection_printf (conn, "ERROR 1 Server not found\n"); - } -} - -static void -sup_handle_flexi_xserver (GdmConnection *conn, - const char *msg, - gpointer data) -{ - char *name; - const char *command = NULL; - GdmXserver *svr; - const char *rest; - char *username; - char *end; - gboolean has_user; - - has_user = strncmp (msg, GDM_SUP_FLEXI_XSERVER_USER " ", strlen (GDM_SUP_FLEXI_XSERVER_USER " ")) == 0; - - g_debug ("Handling flexi request has-user:%d", has_user); - - /* Only allow locally authenticated connections */ - if ( ! GDM_CONN_AUTHENTICATED (conn)) { - gdm_info (_("%s request denied: " - "Not authenticated"), "FLEXI_XSERVER"); - gdm_connection_write (conn, - "ERROR 100 Not authenticated\n"); - return; - } - - if (has_user) { - rest = msg + strlen (GDM_SUP_FLEXI_XSERVER_USER " "); - end = strchr (rest, ' '); - if (end) { - username = g_strndup (rest, end - rest); - rest = end + 1; - } else { - username = g_strdup (rest); - rest = rest + strlen (rest); - } - } else { - rest = msg + strlen (GDM_SUP_FLEXI_XSERVER " "); - username = NULL; - } - - name = g_strdup (rest); - g_strstrip (name); - if (ve_string_empty (name)) { - g_free (name); - name = g_strdup (GDM_STANDARD); - } - - svr = gdm_daemon_config_find_xserver (name); - - if G_UNLIKELY (svr == NULL) { - /* Don't print the name to syslog as it might be - * long and dangerous */ - gdm_error (_("Unknown server type requested; using " - "standard server.")); - command = gdm_daemon_config_get_value_string (GDM_KEY_STANDARD_XSERVER); - } else if G_UNLIKELY ( ! svr->flexible) { - gdm_error (_("Requested server %s not allowed to be " - "used for flexible servers; using " - "standard server."), name); - command = gdm_daemon_config_get_value_string (GDM_KEY_STANDARD_XSERVER); - } else { - command = svr->command; - } - g_free (name); - - handle_flexi_server (conn, - TYPE_FLEXI, - command, - /* It is kind of ugly that we don't use - the standard resolution for this, but - oh well, this makes other things simpler */ - svr->handled, - svr->chooser, - NULL, - 0, - NULL, - NULL, - username); - g_free (username); -} - -static void -sup_handle_flexi_xnest (GdmConnection *conn, - const char *msg, - gpointer data) -{ - char *dispname = NULL; - char *xauthfile = NULL; - char *cookie = NULL; - uid_t uid; - const char *rest; - char *username; - char *end; - gboolean has_user; - - has_user = strncmp (msg, GDM_SUP_FLEXI_XNEST_USER " ", strlen (GDM_SUP_FLEXI_XNEST_USER " ")) == 0; - - g_debug ("Handling flexi xnest request has-user:%d", has_user); - - if (has_user) { - rest = msg + strlen (GDM_SUP_FLEXI_XNEST_USER " "); - end = strchr (rest, ' '); - username = g_strndup (rest, end - rest); - } else { - rest = msg; - username = NULL; - } - - extract_dispname_uid_xauthfile_cookie (rest, - &dispname, - &uid, - &xauthfile, - &cookie); - - if (dispname == NULL) { - /* Something bogus is going on, so just whack the - * connection */ - g_free (xauthfile); - gdm_connection_close (conn); - g_warning ("Unable to get display name from request"); - return; - } - - /* This is probably a pre-2.2.4.2 client */ - if (xauthfile == NULL || cookie == NULL) { - /* evil, just whack the connection in this case */ - gdm_connection_write (conn, - "ERROR 100 Not authenticated\n"); - gdm_connection_close (conn); - g_free (cookie); - return; - } - - handle_flexi_server (conn, - TYPE_FLEXI_XNEST, - gdm_daemon_config_get_value_string (GDM_KEY_XNEST), - TRUE /* handled */, - FALSE /* chooser */, - dispname, - uid, - xauthfile, - cookie, - username); - - g_free (dispname); - g_free (xauthfile); - g_free (username); -} - -static void -sup_handle_get_config (GdmConnection *conn, - const char *msg, - gpointer data) -{ - const char *parms; - char **splitstr; - char *retval; - static gboolean done_prefetch = FALSE; - - retval = NULL; - parms = &msg[strlen (GDM_SUP_GET_CONFIG " ")]; - - splitstr = g_strsplit (parms, " ", 2); - - if (splitstr == NULL || splitstr[0] == NULL) { - goto out; - } - - /* - * It is not meaningful to manage this in a per-display - * fashion since the prefetch program is only run once the - * for the first display that requests the key. So process - * this first and return "Unsupported key" for requests - * after the first request. - */ - if (strcmp (splitstr[0], GDM_KEY_PRE_FETCH_PROGRAM) == 0) { - if (done_prefetch) { - gdm_connection_printf (conn, "OK \n"); - } else { - gdm_connection_printf (conn, "ERROR 50 Unsupported key <%s>\n", splitstr[0]); - done_prefetch = TRUE; - } - goto out; - } - - if (splitstr[0] != NULL) { - gboolean res; - - /* - * Note passing in the display is backwards compatible - * since if it is NULL, it won't try to load the display - * value at all. - */ - - g_debug ("Handling GET_CONFIG: %s for display %s", splitstr[0], splitstr[1]); - - res = gdm_daemon_config_to_string (splitstr[0], splitstr[1], &retval); - - if (res) { - gdm_connection_printf (conn, "OK %s\n", retval); - g_free (retval); - } else { - if (gdm_daemon_config_is_valid_key ((gchar *)splitstr[0])) - gdm_connection_printf (conn, "OK \n"); - else - gdm_connection_printf (conn, - "ERROR 50 Unsupported key <%s>\n", - splitstr[0]); - } - } - out: - g_strfreev (splitstr); -} - -static gboolean -is_action_available (GdmDisplay *disp, gchar *action) -{ - const gchar **allowsyscmd; - const gchar **rbackeys; - gboolean sysmenu; - gboolean ret = FALSE; - int i; - - allowsyscmd = gdm_daemon_config_get_value_string_array (GDM_KEY_ALLOW_LOGOUT_ACTIONS); - rbackeys = gdm_daemon_config_get_value_string_array (GDM_KEY_RBAC_SYSTEM_COMMAND_KEYS); - sysmenu = gdm_daemon_config_get_value_bool_per_display (GDM_KEY_SYSTEM_MENU, disp->name); - - if (!disp->attached || !sysmenu) { - return FALSE; - } - - for (i = 0; allowsyscmd[i] != NULL; i++) { - if (strcmp (allowsyscmd[i], action) == 0) { - ret = TRUE; - break; - } - } - -#ifdef HAVE_CHKAUTHATTR - if (ret == TRUE && rbackeys) { - for (i = 0; rbackeys[i] != NULL; i++) { - gchar **rbackey = g_strsplit (rbackeys[i], ":", 2); - - if (! ve_string_empty (rbackey[0]) && - ! ve_string_empty (rbackey[1]) && - strcmp (rbackey[0], action) == 0) { - - if (!chkauthattr (rbackey[1], disp->login)) { - g_strfreev (rbackey); - ret = FALSE; - break; - } - - } - g_strfreev (rbackey); - } - } -#endif - - return ret; -} - -static void -sup_handle_query_logout_action (GdmConnection *conn, - const char *msg, - gpointer data) -{ - GdmLogoutAction logout_action; - GdmDisplay *disp; - GString *reply; - const gchar *sep = " "; - int i; - - disp = gdm_connection_get_display (conn); - - /* Only allow locally authenticated connections */ - if (! GDM_CONN_AUTHENTICATED (conn) || disp == NULL) { - gdm_info (_("%s request denied: " - "Not authenticated"), "QUERY_LOGOUT_ACTION"); - gdm_connection_write (conn, - "ERROR 100 Not authenticated\n"); - return; - } - - reply = g_string_new ("OK"); - - logout_action = disp->logout_action; - if (logout_action == GDM_LOGOUT_ACTION_NONE) - logout_action = safe_logout_action; - - if (! ve_string_empty (gdm_daemon_config_get_value_string_array (GDM_KEY_HALT)) && - is_action_available (disp, GDM_SUP_LOGOUT_ACTION_HALT)) { - g_string_append_printf (reply, "%s%s", sep, - GDM_SUP_LOGOUT_ACTION_HALT); - if (logout_action == GDM_LOGOUT_ACTION_HALT) - g_string_append (reply, "!"); - sep = ";"; - } - if (! ve_string_empty (gdm_daemon_config_get_value_string_array (GDM_KEY_REBOOT)) && - is_action_available (disp, GDM_SUP_LOGOUT_ACTION_REBOOT)) { - g_string_append_printf (reply, "%s%s", sep, - GDM_SUP_LOGOUT_ACTION_REBOOT); - if (logout_action == GDM_LOGOUT_ACTION_REBOOT) - g_string_append (reply, "!"); - sep = ";"; - } - if (! ve_string_empty (gdm_daemon_config_get_value_string_array (GDM_KEY_SUSPEND)) && - is_action_available (disp, GDM_SUP_LOGOUT_ACTION_SUSPEND)) { - g_string_append_printf (reply, "%s%s", sep, - GDM_SUP_LOGOUT_ACTION_SUSPEND); - if (logout_action == GDM_LOGOUT_ACTION_SUSPEND) - g_string_append (reply, "!"); - sep = ";"; - } - - if (is_action_available (disp, GDM_SUP_LOGOUT_ACTION_CUSTOM_CMD_TEMPLATE)) { - for (i = 0; i < GDM_CUSTOM_COMMAND_MAX; i++) { - gchar *key_string = NULL; - key_string = g_strdup_printf ("%s%d=", GDM_KEY_CUSTOM_CMD_TEMPLATE, i); - - if (! ve_string_empty (gdm_daemon_config_get_value_string (key_string))) { - - g_free (key_string); - key_string = g_strdup_printf("%s%d=", - GDM_KEY_CUSTOM_CMD_IS_PERSISTENT_TEMPLATE, i); - - if (gdm_daemon_config_get_value_bool (key_string)) { - g_string_append_printf (reply, "%s%s%d", sep, - GDM_SUP_LOGOUT_ACTION_CUSTOM_CMD_TEMPLATE, i); - if (logout_action == (GDM_LOGOUT_ACTION_CUSTOM_CMD_FIRST + i)) - g_string_append (reply, "!"); - sep = ";"; - } - } - g_free(key_string); - } - } - - g_string_append (reply, "\n"); - gdm_connection_write (conn, reply->str); - g_string_free (reply, TRUE); -} - -static void -sup_handle_query_custom_cmd_labels (GdmConnection *conn, - const char *msg, - gpointer data) -{ - - GdmDisplay *disp; - GString *reply; - const gchar *sep = " "; - gboolean sysmenu; - int i; - - disp = gdm_connection_get_display (conn); - sysmenu = gdm_daemon_config_get_value_bool_per_display (GDM_KEY_SYSTEM_MENU, disp->name); - - /* Only allow locally authenticated connections */ - if ( ! GDM_CONN_AUTHENTICATED (conn) || - disp == NULL) { - gdm_info (_("%s request denied: " - "Not authenticated"), "QUERY_CUSTOM_CMD_LABELS"); - gdm_connection_write (conn, - "ERROR 100 Not authenticated\n"); - return; - } - - reply = g_string_new ("OK"); - - for (i = 0; i < GDM_CUSTOM_COMMAND_MAX; i++) { - gchar *key_string = NULL; - key_string = g_strdup_printf("%s%d=", GDM_KEY_CUSTOM_CMD_TEMPLATE, i); - if (sysmenu && disp->attached && - ! ve_string_empty (gdm_daemon_config_get_value_string (key_string))) { - g_free (key_string); - key_string = g_strdup_printf("%s%d=", GDM_KEY_CUSTOM_CMD_IS_PERSISTENT_TEMPLATE, i); - if (gdm_daemon_config_get_value_bool (key_string)) { - g_free (key_string); - key_string = g_strdup_printf("%s%d=", GDM_KEY_CUSTOM_CMD_LABEL_TEMPLATE, i); - g_string_append_printf (reply, "%s%s", sep, gdm_daemon_config_get_value_string (key_string)); - sep = ";"; - } - } - g_free(key_string); - } - - g_string_append (reply, "\n"); - gdm_connection_write (conn, reply->str); - g_string_free (reply, TRUE); -} - -static void -sup_handle_all_servers (GdmConnection *conn, - const char *msg, - gpointer data) -{ - GString *reply; - GSList *li; - const gchar *sep = " "; - GSList *displays; - - displays = gdm_daemon_config_get_display_list (); - - reply = g_string_new ("OK"); - for (li = displays; li != NULL; li = li->next) { - GdmDisplay *disp = li->data; - g_string_append_printf (reply, "%s%s,%s", sep, - ve_sure_string (disp->name), - ve_sure_string (disp->login)); - sep = ";"; - } - g_string_append (reply, "\n"); - gdm_connection_write (conn, reply->str); - g_string_free (reply, TRUE); -} - -static void -sup_handle_get_server_list (GdmConnection *conn, - const char *msg, - gpointer data) -{ - gchar *retval = gdm_daemon_config_get_xservers (); - - if (retval != NULL) { - gdm_connection_printf (conn, "OK %s\n", retval); - g_free (retval); - } else { - gdm_connection_printf (conn, "ERROR 1 No servers found\n"); - } -} - -static void -sup_handle_get_custom_config_file (GdmConnection *conn, - const char *msg, - gpointer data) -{ - gchar *ret; - - ret = gdm_daemon_config_get_custom_config_file (); - if (ret) - gdm_connection_printf (conn, "OK %s\n", ret); - else - gdm_connection_write (conn, - "ERROR 1 File not found\n"); -} - -static void -sup_handle_greeterpids (GdmConnection *conn, - const char *msg, - gpointer data) -{ - GString *reply; - GSList *li; - const gchar *sep = " "; - GSList *displays; - - displays = gdm_daemon_config_get_display_list (); - - reply = g_string_new ("OK"); - for (li = displays; li != NULL; li = li->next) { - GdmDisplay *disp = li->data; - if (disp->greetpid > 0) { - g_string_append_printf (reply, "%s%ld", - sep, (long)disp->greetpid); - sep = ";"; - } - } - g_string_append (reply, "\n"); - gdm_connection_write (conn, reply->str); - g_string_free (reply, TRUE); -} - -static void -sup_handle_query_custom_cmd_no_restart_status (GdmConnection *conn, - const char *msg, - gpointer data) -{ - - GdmDisplay *disp; - GString *reply; - gboolean sysmenu; - unsigned long no_restart_status_flag = 0; /* we can store up-to 32 commands this way */ - int i; - - disp = gdm_connection_get_display (conn); - sysmenu = gdm_daemon_config_get_value_bool_per_display (GDM_KEY_SYSTEM_MENU, disp->name); - - /* Only allow locally authenticated connections */ - if ( ! GDM_CONN_AUTHENTICATED (conn) || - disp == NULL) { - gdm_info (_("%s request denied: " - "Not authenticated"), "QUERY_CUSTOM_CMD_NO_RESTART_STATUS"); - gdm_connection_write (conn, - "ERROR 100 Not authenticated\n"); - return; - } - - reply = g_string_new ("OK "); - - for (i = 0; i < GDM_CUSTOM_COMMAND_MAX; i++) { - gchar *key_string = NULL; - key_string = g_strdup_printf("%s%d=", GDM_KEY_CUSTOM_CMD_TEMPLATE, i); - if (sysmenu && disp->attached && - ! ve_string_empty (gdm_daemon_config_get_value_string (key_string))) { - g_free (key_string); - key_string = g_strdup_printf("%s%d=", GDM_KEY_CUSTOM_CMD_IS_PERSISTENT_TEMPLATE, i); - if (gdm_daemon_config_get_value_bool (key_string)) { - g_free (key_string); - key_string = g_strdup_printf("%s%d=", GDM_KEY_CUSTOM_CMD_NO_RESTART_TEMPLATE, i); - if(gdm_daemon_config_get_value_bool (key_string)) - no_restart_status_flag |= (1 << i); - } - } - g_free(key_string); - } - - g_string_append_printf (reply, "%ld\n", no_restart_status_flag); - gdm_connection_write (conn, reply->str); - g_string_free (reply, TRUE); -} - -static void -sup_handle_set_logout_action (GdmConnection *conn, - const char *msg, - gpointer data) - -{ - GdmDisplay *disp; - const gchar *action; - gboolean was_ok = FALSE; - - action = &msg[strlen (GDM_SUP_SET_LOGOUT_ACTION " ")]; - disp = gdm_connection_get_display (conn); - - /* Only allow locally authenticated connections */ - if ( ! GDM_CONN_AUTHENTICATED (conn) || - disp == NULL || - ! disp->logged_in) { - gdm_info (_("%s request denied: " - "Not authenticated"), "SET_LOGOUT_ACTION"); - gdm_connection_write (conn, - "ERROR 100 Not authenticated\n"); - return; - } - - if (strcmp (action, GDM_SUP_LOGOUT_ACTION_NONE) == 0) { - disp->logout_action = GDM_LOGOUT_ACTION_NONE; - was_ok = TRUE; - } else if (strcmp (action, GDM_SUP_LOGOUT_ACTION_HALT) == 0 && - ! gdm_daemon_config_get_value_string_array (GDM_KEY_HALT) && - is_action_available (disp, GDM_SUP_LOGOUT_ACTION_HALT)) { - disp->logout_action = GDM_LOGOUT_ACTION_HALT; - was_ok = TRUE; - } else if (strcmp (action, GDM_SUP_LOGOUT_ACTION_REBOOT) == 0 && - ! gdm_daemon_config_get_value_string_array (GDM_KEY_REBOOT) && - is_action_available (disp, GDM_SUP_LOGOUT_ACTION_REBOOT)) { - disp->logout_action = GDM_LOGOUT_ACTION_REBOOT; - was_ok = TRUE; - } else if (strcmp (action, GDM_SUP_LOGOUT_ACTION_SUSPEND) == 0 && - ! gdm_daemon_config_get_value_string_array (GDM_KEY_SUSPEND) && - is_action_available (disp, GDM_SUP_LOGOUT_ACTION_SUSPEND)) { - disp->logout_action = GDM_LOGOUT_ACTION_SUSPEND; - was_ok = TRUE; - } - else if (strncmp (action, GDM_SUP_LOGOUT_ACTION_CUSTOM_CMD_TEMPLATE, - strlen (GDM_SUP_LOGOUT_ACTION_CUSTOM_CMD_TEMPLATE)) == 0 && - is_action_available (disp, GDM_SUP_LOGOUT_ACTION_CUSTOM_CMD_TEMPLATE)) { - - int cmd_index; - if (sscanf (action, GDM_SUP_LOGOUT_ACTION_CUSTOM_CMD_TEMPLATE "%d", &cmd_index) == 1) { - gchar *key_string = NULL; - key_string = g_strdup_printf ("%s%d=", GDM_KEY_CUSTOM_CMD_TEMPLATE, cmd_index); - if (! ve_string_empty (gdm_daemon_config_get_value_string (key_string))) { - disp->logout_action = - GDM_LOGOUT_ACTION_CUSTOM_CMD_FIRST + cmd_index; - was_ok = TRUE; - } - g_free(key_string); - } - } - - if (was_ok) { - gdm_connection_write (conn, "OK\n"); - gdm_try_logout_action (disp); - } else { - gdm_connection_write (conn, "ERROR 7 Unknown logout action, or not available\n"); - } -} - -static void -sup_handle_set_safe_logout_action (GdmConnection *conn, - const char *msg, - gpointer data) - -{ - GdmDisplay *disp; - const gchar *action; - gboolean was_ok = FALSE; - - action = &msg[strlen (GDM_SUP_SET_SAFE_LOGOUT_ACTION " ")]; - disp = gdm_connection_get_display (conn); - - /* Only allow locally authenticated connections */ - if ( ! GDM_CONN_AUTHENTICATED (conn) || - disp == NULL || - ! disp->logged_in) { - gdm_info (_("%s request denied: " - "Not authenticated"), "SET_LOGOUT_ACTION"); - gdm_connection_write (conn, - "ERROR 100 Not authenticated\n"); - return; - } - - if (strcmp (action, GDM_SUP_LOGOUT_ACTION_NONE) == 0) { - safe_logout_action = GDM_LOGOUT_ACTION_NONE; - was_ok = TRUE; - } else if (strcmp (action, GDM_SUP_LOGOUT_ACTION_HALT) == 0 && - ! gdm_daemon_config_get_value_string_array (GDM_KEY_HALT) && - is_action_available (disp, GDM_SUP_LOGOUT_ACTION_HALT)) { - safe_logout_action = GDM_LOGOUT_ACTION_HALT; - was_ok = TRUE; - } else if (strcmp (action, GDM_SUP_LOGOUT_ACTION_REBOOT) == 0 && - ! gdm_daemon_config_get_value_string_array (GDM_KEY_REBOOT) && - is_action_available (disp, GDM_SUP_LOGOUT_ACTION_REBOOT)) { - safe_logout_action = GDM_LOGOUT_ACTION_REBOOT; - was_ok = TRUE; - } else if (strcmp (action, GDM_SUP_LOGOUT_ACTION_SUSPEND) == 0 && - ! gdm_daemon_config_get_value_string_array (GDM_KEY_SUSPEND) && - is_action_available (disp, GDM_SUP_LOGOUT_ACTION_SUSPEND)) { - safe_logout_action = GDM_LOGOUT_ACTION_SUSPEND; - was_ok = TRUE; - } - else if (strncmp (action, GDM_SUP_LOGOUT_ACTION_CUSTOM_CMD_TEMPLATE, - strlen (GDM_SUP_LOGOUT_ACTION_CUSTOM_CMD_TEMPLATE)) == 0 && - is_action_available (disp, GDM_SUP_LOGOUT_ACTION_CUSTOM_CMD_TEMPLATE)) { - - int cmd_index; - if (sscanf (action, GDM_SUP_LOGOUT_ACTION_CUSTOM_CMD_TEMPLATE "%d", &cmd_index) == 1) { - - gchar *key_string = NULL; - key_string = g_strdup_printf ("%s%d=", GDM_KEY_CUSTOM_CMD_TEMPLATE, cmd_index); - - if (! ve_string_empty (gdm_daemon_config_get_value_string (key_string))) { - safe_logout_action = - GDM_LOGOUT_ACTION_CUSTOM_CMD_FIRST + cmd_index; - was_ok = TRUE; - } - g_free(key_string); - } - } - - if (was_ok) { - gdm_connection_write (conn, "OK\n"); - gdm_try_logout_action (disp); - } else { - gdm_connection_write (conn, "ERROR 7 Unknown logout action, or not available\n"); - } -} - -static void -sup_handle_query_vt (GdmConnection *conn, - const char *msg, - gpointer data) - -{ - - /* Only allow locally authenticated connections */ - if ( ! GDM_CONN_AUTHENTICATED (conn)) { - gdm_info (_("%s request denied: " - "Not authenticated"), "QUERY_VT"); - gdm_connection_write (conn, - "ERROR 100 Not authenticated\n"); - return; - } - -#if defined (__linux__) || defined (__FreeBSD__) || defined (__DragonFly__) - gdm_connection_printf (conn, "OK %d\n", gdm_get_cur_vt ()); -#else - gdm_connection_write (conn, "ERROR 8 Virtual terminals not supported\n"); -#endif -} - -static void -sup_handle_set_vt (GdmConnection *conn, - const char *msg, - gpointer data) -{ - int vt; - GSList *li; - GSList *displays; - - displays = gdm_daemon_config_get_display_list (); - - if (sscanf (msg, GDM_SUP_SET_VT " %d", &vt) != 1 || - vt < 0) { - gdm_connection_write (conn, - "ERROR 9 Invalid virtual terminal number\n"); - return; - } - - /* Only allow locally authenticated connections */ - if ( ! GDM_CONN_AUTHENTICATED (conn)) { - gdm_info (_("%s request denied: " - "Not authenticated"), "QUERY_VT"); - gdm_connection_write (conn, - "ERROR 100 Not authenticated\n"); - return; - } - -#if defined (__linux__) || defined (__FreeBSD__) || defined (__DragonFly__) - gdm_change_vt (vt); - for (li = displays; li != NULL; li = li->next) { - GdmDisplay *disp = li->data; - if (disp->vt == vt) { - send_slave_command (disp, GDM_NOTIFY_TWIDDLE_POINTER); - break; - } - } - gdm_connection_write (conn, "OK\n"); -#else - gdm_connection_write (conn, "ERROR 8 Virtual terminals not supported\n"); -#endif -} - -static void -gdm_handle_user_message (GdmConnection *conn, - const char *msg, - gpointer data) -{ - - g_debug ("Handling user message: '%s'", msg); - - if (gdm_connection_get_message_count (conn) > GDM_SUP_MAX_MESSAGES) { - g_debug ("Closing connection, %d messages reached", GDM_SUP_MAX_MESSAGES); - gdm_connection_write (conn, "ERROR 200 Too many messages\n"); - gdm_connection_close (conn); - return; - } - - if (strncmp (msg, GDM_SUP_AUTH_LOCAL " ", - strlen (GDM_SUP_AUTH_LOCAL " ")) == 0) { - - sup_handle_auth_local (conn, msg, data); - - } else if (strcmp (msg, GDM_SUP_FLEXI_XSERVER) == 0) { - /* Only allow locally authenticated connections */ - if ( ! GDM_CONN_AUTHENTICATED (conn)) { - gdm_info (_("%s request denied: " - "Not authenticated"), "FLEXI_XSERVER"); - gdm_connection_write (conn, - "ERROR 100 Not authenticated\n"); - return; - } - - handle_flexi_server (conn, - TYPE_FLEXI, - gdm_daemon_config_get_value_string (GDM_KEY_STANDARD_XSERVER), - TRUE /* handled */, - FALSE /* chooser */, - NULL, - 0, - NULL, - NULL, - NULL); - } else if ((strncmp (msg, GDM_SUP_FLEXI_XSERVER_USER " ", - strlen (GDM_SUP_FLEXI_XSERVER_USER " ")) == 0) || - (strncmp (msg, GDM_SUP_FLEXI_XSERVER " ", - strlen (GDM_SUP_FLEXI_XSERVER " ")) == 0)) { - - sup_handle_flexi_xserver (conn, msg, data); - - } else if ((strncmp (msg, GDM_SUP_FLEXI_XNEST_USER " ", - strlen (GDM_SUP_FLEXI_XNEST_USER " ")) == 0) || - (strncmp (msg, GDM_SUP_FLEXI_XNEST " ", - strlen (GDM_SUP_FLEXI_XNEST " ")) == 0)) { - - sup_handle_flexi_xnest (conn, msg, data); - - } else if ((strncmp (msg, GDM_SUP_ATTACHED_SERVERS, - strlen (GDM_SUP_ATTACHED_SERVERS)) == 0) || - (strncmp (msg, GDM_SUP_CONSOLE_SERVERS, - strlen (GDM_SUP_CONSOLE_SERVERS)) == 0)) { - - sup_handle_attached_servers (conn, msg, data); - - } else if (strcmp (msg, GDM_SUP_ALL_SERVERS) == 0) { - - sup_handle_all_servers (conn, msg, data); - - } else if (strcmp (msg, GDM_SUP_GET_SERVER_LIST) == 0) { - - sup_handle_get_server_list (conn, msg, data); - - } else if (strncmp (msg, GDM_SUP_GET_SERVER_DETAILS " ", - strlen (GDM_SUP_GET_SERVER_DETAILS " ")) == 0) { - - sup_handle_get_server_details (conn, msg, data); - - } else if (strcmp (msg, GDM_SUP_GREETERPIDS) == 0) { - - sup_handle_greeterpids (conn, msg, data); - - } else if (strncmp (msg, GDM_SUP_UPDATE_CONFIG " ", - strlen (GDM_SUP_UPDATE_CONFIG " ")) == 0) { - const char *key; - - key = &msg[strlen (GDM_SUP_UPDATE_CONFIG " ")]; - - if (! gdm_daemon_config_update_key ((gchar *)key)) - gdm_connection_printf (conn, "ERROR 50 Unsupported key <%s>\n", key); - else - gdm_connection_write (conn, "OK\n"); - } else if (strncmp (msg, GDM_SUP_GET_CONFIG " ", - strlen (GDM_SUP_GET_CONFIG " ")) == 0) { - - sup_handle_get_config (conn, msg, data); - - } else if (strcmp (msg, GDM_SUP_GET_CONFIG_FILE) == 0) { - /* - * Value is only non-null if passed in on command line. - * Otherwise print compiled-in default file location. - */ - if (config_file == NULL) { - gdm_connection_printf (conn, "OK %s\n", - GDM_DEFAULTS_CONF); - } else { - gdm_connection_printf (conn, "OK %s\n", config_file); - } - } else if (strcmp (msg, GDM_SUP_GET_CUSTOM_CONFIG_FILE) == 0) { - - sup_handle_get_custom_config_file (conn, msg, data); - - } else if (strcmp (msg, GDM_SUP_QUERY_LOGOUT_ACTION) == 0) { - - sup_handle_query_logout_action (conn, msg, data); - - } else if (strcmp (msg, GDM_SUP_QUERY_CUSTOM_CMD_LABELS) == 0) { - - sup_handle_query_custom_cmd_labels (conn, msg, data); - - } else if (strcmp (msg, GDM_SUP_QUERY_CUSTOM_CMD_NO_RESTART_STATUS) == 0) { - - sup_handle_query_custom_cmd_no_restart_status (conn, msg, data); - - } else if (strncmp (msg, GDM_SUP_SET_LOGOUT_ACTION " ", - strlen (GDM_SUP_SET_LOGOUT_ACTION " ")) == 0) { - - sup_handle_set_logout_action (conn, msg, data); - - } else if (strncmp (msg, GDM_SUP_SET_SAFE_LOGOUT_ACTION " ", - strlen (GDM_SUP_SET_SAFE_LOGOUT_ACTION " ")) == 0) { - - sup_handle_set_safe_logout_action (conn, msg, data); - - } else if (strcmp (msg, GDM_SUP_QUERY_VT) == 0) { - - sup_handle_query_vt (conn, msg, data); - - } else if (strncmp (msg, GDM_SUP_SET_VT " ", - strlen (GDM_SUP_SET_VT " ")) == 0) { - - sup_handle_set_vt (conn, msg, data); - - } else if (strncmp (msg, GDM_SUP_ADD_DYNAMIC_DISPLAY " ", - strlen (GDM_SUP_ADD_DYNAMIC_DISPLAY " ")) == 0) { - gchar *key; - - key = g_strdup (&msg[strlen (GDM_SUP_ADD_DYNAMIC_DISPLAY " ")]); - g_strstrip (key); - handle_dynamic_server (conn, DYNAMIC_ADD, key); - g_free (key); - - } else if (strncmp (msg, GDM_SUP_REMOVE_DYNAMIC_DISPLAY " ", - strlen (GDM_SUP_REMOVE_DYNAMIC_DISPLAY " ")) == 0) { - gchar *key; - - key = g_strdup (&msg[strlen (GDM_SUP_REMOVE_DYNAMIC_DISPLAY " ")]); - g_strstrip (key); - handle_dynamic_server (conn, DYNAMIC_REMOVE, key); - g_free (key); - - } else if (strncmp (msg, GDM_SUP_RELEASE_DYNAMIC_DISPLAYS " ", - strlen (GDM_SUP_RELEASE_DYNAMIC_DISPLAYS " ")) == 0) { - - gchar *key; - - key = g_strdup (&msg[strlen (GDM_SUP_RELEASE_DYNAMIC_DISPLAYS " ")]); - g_strstrip (key); - handle_dynamic_server (conn, DYNAMIC_RELEASE, key); - g_free (key); - - } else if (strcmp (msg, GDM_SUP_VERSION) == 0) { - gdm_connection_write (conn, "GDM " VERSION "\n"); - } else if (strcmp (msg, GDM_SUP_SERVER_BUSY) == 0) { - if (gdm_connection_is_server_busy (unixconn)) - gdm_connection_write (conn, "OK true\n"); - else - gdm_connection_write (conn, "OK false\n"); - } else if (strcmp (msg, GDM_SUP_CLOSE) == 0) { - gdm_connection_close (conn); - } else { - gdm_connection_write (conn, "ERROR 0 Not implemented\n"); - gdm_connection_close (conn); - } -} |