2 * Copyright (C) 2010-2011 Robert Ancell.
3 * Author: Robert Ancell <robert.ancell@canonical.com>
5 * This program is free software: you can redistribute it and/or modify it under
6 * the terms of the GNU General Public License as published by the Free Software
7 * Foundation, either version 3 of the License, or (at your option) any later
8 * version. See http://www.gnu.org/copyleft/gpl.html the full text of the
21 #include "ldm-marshal.h"
22 #include "configuration.h"
30 static guint signals[LAST_SIGNAL] = { 0 };
34 /* PAM service to authenticate with */
36 gchar *autologin_pam_service;
38 /* Buffer for data read from greeter */
41 gboolean use_secure_memory;
43 /* Hints for the greeter */
46 /* Default session to use */
47 gchar *default_session;
49 /* Sequence number of current PAM session */
50 guint32 authentication_sequence_number;
52 /* Remote session name */
53 gchar *remote_session;
55 /* PAM session being constructed by the greeter */
56 Session *authentication_session;
58 /* TRUE if a user has been authenticated and the session requested to start */
59 gboolean start_session;
61 /* TRUE if can log into guest accounts */
64 /* TRUE if logging into guest session */
65 gboolean guest_account_authenticated;
67 /* Communication channels to communicate with */
68 GIOChannel *to_greeter_channel;
69 GIOChannel *from_greeter_channel;
72 G_DEFINE_TYPE (Greeter, greeter, SESSION_TYPE);
74 /* Messages from the greeter to the server */
77 GREETER_MESSAGE_CONNECT = 0,
78 GREETER_MESSAGE_AUTHENTICATE,
79 GREETER_MESSAGE_AUTHENTICATE_AS_GUEST,
80 GREETER_MESSAGE_CONTINUE_AUTHENTICATION,
81 GREETER_MESSAGE_START_SESSION,
82 GREETER_MESSAGE_CANCEL_AUTHENTICATION,
83 GREETER_MESSAGE_SET_LANGUAGE,
84 GREETER_MESSAGE_AUTHENTICATE_REMOTE
87 /* Messages from the server to the greeter */
90 SERVER_MESSAGE_CONNECTED = 0,
91 SERVER_MESSAGE_PROMPT_AUTHENTICATION,
92 SERVER_MESSAGE_END_AUTHENTICATION,
93 SERVER_MESSAGE_SESSION_RESULT
96 static gboolean read_cb (GIOChannel *source, GIOCondition condition, gpointer data);
99 greeter_set_pam_services (Greeter *greeter, const gchar *pam_service, const gchar *autologin_pam_service)
101 g_free (greeter->priv->pam_service);
102 greeter->priv->pam_service = g_strdup (pam_service);
103 g_free (greeter->priv->autologin_pam_service);
104 greeter->priv->autologin_pam_service = g_strdup (autologin_pam_service);
108 greeter_set_allow_guest (Greeter *greeter, gboolean allow_guest)
110 greeter->priv->allow_guest = allow_guest;
114 greeter_set_hint (Greeter *greeter, const gchar *name, const gchar *value)
116 g_hash_table_insert (greeter->priv->hints, g_strdup (name), g_strdup (value));
120 secure_malloc (Greeter *greeter, size_t n)
122 if (greeter->priv->use_secure_memory)
123 return gcry_malloc_secure (n);
129 secure_realloc (Greeter *greeter, void *ptr, size_t n)
131 if (greeter->priv->use_secure_memory)
132 return gcry_realloc (ptr, n);
134 return g_realloc (ptr, n);
138 secure_free (Greeter *greeter, void *ptr)
140 if (greeter->priv->use_secure_memory)
141 return gcry_free (ptr);
152 #define HEADER_SIZE (sizeof (guint32) * 2)
153 #define MAX_MESSAGE_LENGTH 1024
156 write_message (Greeter *greeter, guint8 *message, gsize message_length)
158 GError *error = NULL;
160 g_io_channel_write_chars (greeter->priv->to_greeter_channel, (gchar *) message, message_length, NULL, &error);
162 g_warning ("Error writing to greeter: %s", error->message);
163 g_clear_error (&error);
164 g_io_channel_flush (greeter->priv->to_greeter_channel, NULL);
168 write_int (guint8 *buffer, gint buffer_length, guint32 value, gsize *offset)
170 if (*offset + 4 >= buffer_length)
172 buffer[*offset] = value >> 24;
173 buffer[*offset+1] = (value >> 16) & 0xFF;
174 buffer[*offset+2] = (value >> 8) & 0xFF;
175 buffer[*offset+3] = value & 0xFF;
180 write_string (guint8 *buffer, gint buffer_length, const gchar *value, gsize *offset)
185 length = strlen (value);
188 write_int (buffer, buffer_length, length, offset);
189 if (*offset + length >= buffer_length)
193 memcpy (buffer + *offset, value, length);
199 write_header (guint8 *buffer, gint buffer_length, guint32 id, guint32 length, gsize *offset)
201 write_int (buffer, buffer_length, id, offset);
202 write_int (buffer, buffer_length, length, offset);
206 string_length (const gchar *value)
209 return int_length ();
211 return int_length () + strlen (value);
215 handle_connect (Greeter *greeter, const gchar *version)
217 guint8 message[MAX_MESSAGE_LENGTH];
223 g_debug ("Greeter connected version=%s", version);
225 length = string_length (VERSION);
226 g_hash_table_iter_init (&iter, greeter->priv->hints);
227 while (g_hash_table_iter_next (&iter, &key, &value))
228 length += string_length (key) + string_length (value);
230 write_header (message, MAX_MESSAGE_LENGTH, SERVER_MESSAGE_CONNECTED, length, &offset);
231 write_string (message, MAX_MESSAGE_LENGTH, VERSION, &offset);
232 g_hash_table_iter_init (&iter, greeter->priv->hints);
233 while (g_hash_table_iter_next (&iter, &key, &value))
235 write_string (message, MAX_MESSAGE_LENGTH, key, &offset);
236 write_string (message, MAX_MESSAGE_LENGTH, value, &offset);
238 write_message (greeter, message, offset);
240 g_signal_emit (greeter, signals[CONNECTED], 0);
244 pam_messages_cb (Session *session, Greeter *greeter)
248 guint8 message[MAX_MESSAGE_LENGTH];
249 const struct pam_message *messages;
254 messages = session_get_messages (session);
255 messages_length = session_get_messages_length (session);
257 /* Respond to d-bus query with messages */
258 g_debug ("Prompt greeter with %d message(s)", messages_length);
259 size = int_length () + string_length (session_get_username (session)) + int_length ();
260 for (i = 0; i < messages_length; i++)
261 size += int_length () + string_length (messages[i].msg);
263 write_header (message, MAX_MESSAGE_LENGTH, SERVER_MESSAGE_PROMPT_AUTHENTICATION, size, &offset);
264 write_int (message, MAX_MESSAGE_LENGTH, greeter->priv->authentication_sequence_number, &offset);
265 write_string (message, MAX_MESSAGE_LENGTH, session_get_username (session), &offset);
266 write_int (message, MAX_MESSAGE_LENGTH, messages_length, &offset);
267 for (i = 0; i < messages_length; i++)
269 write_int (message, MAX_MESSAGE_LENGTH, messages[i].msg_style, &offset);
270 write_string (message, MAX_MESSAGE_LENGTH, messages[i].msg, &offset);
272 if (messages[i].msg_style == PAM_PROMPT_ECHO_OFF || messages[i].msg_style == PAM_PROMPT_ECHO_ON)
275 write_message (greeter, message, offset);
277 /* Continue immediately if nothing to respond with */
278 // FIXME: Should probably give the greeter a chance to ack the message
281 struct pam_response *response;
282 response = calloc (messages_length, sizeof (struct pam_response));
283 session_respond (greeter->priv->authentication_session, response);
289 send_end_authentication (Greeter *greeter, guint32 sequence_number, const gchar *username, int result)
291 guint8 message[MAX_MESSAGE_LENGTH];
294 write_header (message, MAX_MESSAGE_LENGTH, SERVER_MESSAGE_END_AUTHENTICATION, int_length () + string_length (username) + int_length (), &offset);
295 write_int (message, MAX_MESSAGE_LENGTH, sequence_number, &offset);
296 write_string (message, MAX_MESSAGE_LENGTH, username, &offset);
297 write_int (message, MAX_MESSAGE_LENGTH, result, &offset);
298 write_message (greeter, message, offset);
302 authentication_complete_cb (Session *session, Greeter *greeter)
306 g_debug ("Authenticate result for user %s: %s", session_get_username (session), session_get_authentication_result_string (session));
308 result = session_get_authentication_result (session);
309 if (session_get_is_authenticated (session))
311 if (session_get_user (session))
312 g_debug ("User %s authorized", session_get_username (session));
315 g_debug ("User %s authorized, but no account of that name exists", session_get_username (session));
316 result = PAM_USER_UNKNOWN;
320 send_end_authentication (greeter, greeter->priv->authentication_sequence_number, session_get_username (session), result);
324 reset_session (Greeter *greeter)
326 g_free (greeter->priv->remote_session);
327 greeter->priv->remote_session = NULL;
328 if (greeter->priv->authentication_session)
330 g_signal_handlers_disconnect_matched (greeter->priv->authentication_session, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, greeter);
331 session_stop (greeter->priv->authentication_session);
332 g_object_unref (greeter->priv->authentication_session);
333 greeter->priv->authentication_session = NULL;
336 greeter->priv->guest_account_authenticated = FALSE;
340 handle_login (Greeter *greeter, guint32 sequence_number, const gchar *username)
342 const gchar *autologin_username, *service;
343 gboolean is_interactive;
345 if (username[0] == '\0')
347 g_debug ("Greeter start authentication");
351 g_debug ("Greeter start authentication for %s", username);
353 reset_session (greeter);
355 greeter->priv->authentication_sequence_number = sequence_number;
356 g_signal_emit (greeter, signals[CREATE_SESSION], 0, &greeter->priv->authentication_session);
357 if (!greeter->priv->authentication_session)
359 send_end_authentication (greeter, sequence_number, "", PAM_USER_UNKNOWN);
363 g_signal_connect (G_OBJECT (greeter->priv->authentication_session), "got-messages", G_CALLBACK (pam_messages_cb), greeter);
364 g_signal_connect (G_OBJECT (greeter->priv->authentication_session), "authentication-complete", G_CALLBACK (authentication_complete_cb), greeter);
366 /* Use non-interactive service for autologin user */
367 autologin_username = g_hash_table_lookup (greeter->priv->hints, "autologin-user");
368 if (autologin_username != NULL && g_strcmp0 (username, autologin_username) == 0)
370 service = greeter->priv->autologin_pam_service;
371 is_interactive = FALSE;
375 service = greeter->priv->pam_service;
376 is_interactive = TRUE;
379 /* Run the session process */
380 session_set_pam_service (greeter->priv->authentication_session, service);
381 session_set_username (greeter->priv->authentication_session, username);
382 session_set_do_authenticate (greeter->priv->authentication_session, TRUE);
383 session_set_is_interactive (greeter->priv->authentication_session, is_interactive);
384 session_start (greeter->priv->authentication_session);
388 handle_login_as_guest (Greeter *greeter, guint32 sequence_number)
390 g_debug ("Greeter start authentication for guest account");
392 reset_session (greeter);
394 if (!greeter->priv->allow_guest)
396 g_debug ("Guest account is disabled");
397 send_end_authentication (greeter, sequence_number, "", PAM_USER_UNKNOWN);
401 greeter->priv->guest_account_authenticated = TRUE;
402 send_end_authentication (greeter, sequence_number, "", PAM_SUCCESS);
406 get_remote_session_service (const gchar *session_name)
408 GKeyFile *session_desktop_file;
411 gchar *remote_sessions_dir, *filename, *path, *service = NULL;
412 GError *error = NULL;
414 /* Validate session name doesn't contain directory separators */
415 for (c = session_name; *c; c++)
421 /* Load the session file */
422 session_desktop_file = g_key_file_new ();
423 filename = g_strdup_printf ("%s.desktop", session_name);
424 remote_sessions_dir = config_get_string (config_get_instance (), "LightDM", "remote-sessions-directory");
425 path = g_build_filename (remote_sessions_dir, filename, NULL);
426 g_free (remote_sessions_dir);
428 result = g_key_file_load_from_file (session_desktop_file, path, G_KEY_FILE_NONE, &error);
430 g_debug ("Failed to load session file %s: %s", path, error->message);
432 g_clear_error (&error);
434 service = g_key_file_get_string (session_desktop_file, G_KEY_FILE_DESKTOP_GROUP, "X-LightDM-PAM-Service", NULL);
435 g_key_file_free (session_desktop_file);
441 handle_login_remote (Greeter *greeter, const gchar *session_name, const gchar *username, guint32 sequence_number)
445 if (username[0] == '\0')
447 g_debug ("Greeter start authentication for remote session %s", session_name);
451 g_debug ("Greeter start authentication for remote session %s as user %s", session_name, username);
453 reset_session (greeter);
455 service = get_remote_session_service (session_name);
458 send_end_authentication (greeter, sequence_number, "", PAM_SYSTEM_ERR);
462 greeter->priv->authentication_sequence_number = sequence_number;
463 greeter->priv->remote_session = g_strdup (session_name);
464 g_signal_emit (greeter, signals[CREATE_SESSION], 0, &greeter->priv->authentication_session);
465 if (greeter->priv->authentication_session)
467 g_signal_connect (G_OBJECT (greeter->priv->authentication_session), "got-messages", G_CALLBACK (pam_messages_cb), greeter);
468 g_signal_connect (G_OBJECT (greeter->priv->authentication_session), "authentication-complete", G_CALLBACK (authentication_complete_cb), greeter);
470 /* Run the session process */
471 session_set_pam_service (greeter->priv->authentication_session, service);
472 session_set_username (greeter->priv->authentication_session, username);
473 session_set_do_authenticate (greeter->priv->authentication_session, TRUE);
474 session_set_is_interactive (greeter->priv->authentication_session, TRUE);
475 session_set_is_guest (greeter->priv->authentication_session, TRUE);
476 session_start (greeter->priv->authentication_session);
481 if (!greeter->priv->authentication_session)
483 send_end_authentication (greeter, sequence_number, "", PAM_USER_UNKNOWN);
489 handle_continue_authentication (Greeter *greeter, gchar **secrets)
492 const struct pam_message *messages;
493 struct pam_response *response;
494 int i, j, n_prompts = 0;
496 /* Not in authentication */
497 if (greeter->priv->authentication_session == NULL)
500 messages_length = session_get_messages_length (greeter->priv->authentication_session);
501 messages = session_get_messages (greeter->priv->authentication_session);
503 /* Check correct number of responses */
504 for (i = 0; i < messages_length; i++)
506 int msg_style = messages[i].msg_style;
507 if (msg_style == PAM_PROMPT_ECHO_OFF || msg_style == PAM_PROMPT_ECHO_ON)
510 if (g_strv_length (secrets) != n_prompts)
512 session_respond_error (greeter->priv->authentication_session, PAM_CONV_ERR);
516 g_debug ("Continue authentication");
519 response = calloc (messages_length, sizeof (struct pam_response));
520 for (i = 0, j = 0; i < messages_length; i++)
522 int msg_style = messages[i].msg_style;
523 if (msg_style == PAM_PROMPT_ECHO_OFF || msg_style == PAM_PROMPT_ECHO_ON)
525 size_t secret_length = strlen (secrets[j]) + 1;
526 response[i].resp = secure_malloc (greeter, secret_length);
527 memcpy (response[i].resp, secrets[j], secret_length); // FIXME: Need to convert from UTF-8
532 session_respond (greeter->priv->authentication_session, response);
534 for (i = 0; i < messages_length; i++)
535 secure_free (greeter, response[i].resp);
540 handle_cancel_authentication (Greeter *greeter)
542 /* Not in authentication */
543 if (greeter->priv->authentication_session == NULL)
546 g_debug ("Cancel authentication");
547 reset_session (greeter);
551 handle_start_session (Greeter *greeter, const gchar *session)
554 guint8 message[MAX_MESSAGE_LENGTH];
556 SessionType session_type = SESSION_TYPE_LOCAL;
558 if (strcmp (session, "") == 0)
561 /* Use session type chosen in remote session */
562 if (greeter->priv->remote_session)
564 session_type = SESSION_TYPE_REMOTE;
565 session = greeter->priv->remote_session;
568 if (greeter->priv->guest_account_authenticated || session_get_is_authenticated (greeter->priv->authentication_session))
571 g_debug ("Greeter requests session %s", session);
573 g_debug ("Greeter requests default session");
574 greeter->priv->start_session = TRUE;
575 g_signal_emit (greeter, signals[START_SESSION], 0, session_type, session, &result);
579 g_debug ("Ignoring start session request, user is not authorized");
583 write_header (message, MAX_MESSAGE_LENGTH, SERVER_MESSAGE_SESSION_RESULT, int_length (), &offset);
584 write_int (message, MAX_MESSAGE_LENGTH, result ? 0 : 1, &offset);
585 write_message (greeter, message, offset);
589 handle_set_language (Greeter *greeter, const gchar *language)
593 if (!greeter->priv->guest_account_authenticated && !session_get_is_authenticated (greeter->priv->authentication_session))
595 g_debug ("Ignoring set language request, user is not authorized");
599 // FIXME: Could use this
600 if (greeter->priv->guest_account_authenticated)
602 g_debug ("Ignoring set language request for guest user");
606 g_debug ("Greeter sets language %s", language);
607 user = session_get_user (greeter->priv->authentication_session);
608 user_set_language (user, language);
612 read_int (Greeter *greeter, gsize *offset)
616 if (greeter->priv->n_read - *offset < sizeof (guint32))
618 g_warning ("Not enough space for int, need %zu, got %zu", sizeof (guint32), greeter->priv->n_read - *offset);
621 buffer = greeter->priv->read_buffer + *offset;
622 value = buffer[0] << 24 | buffer[1] << 16 | buffer[2] << 8 | buffer[3];
623 *offset += int_length ();
628 get_message_length (Greeter *greeter)
633 offset = int_length ();
634 payload_length = read_int (greeter, &offset);
636 if (HEADER_SIZE + payload_length < HEADER_SIZE)
638 g_warning ("Payload length of %u octets too long", payload_length);
642 return HEADER_SIZE + payload_length;
646 read_string_full (Greeter *greeter, gsize *offset, void* (*alloc_fn)(size_t n))
651 length = read_int (greeter, offset);
652 if (greeter->priv->n_read - *offset < length)
654 g_warning ("Not enough space for string, need %u, got %zu", length, greeter->priv->n_read - *offset);
655 return g_strdup ("");
658 value = (*alloc_fn) (sizeof (gchar *) * (length + 1));
659 memcpy (value, greeter->priv->read_buffer + *offset, length);
660 value[length] = '\0';
667 read_string (Greeter *greeter, gsize *offset)
669 return read_string_full (greeter, offset, g_malloc);
673 read_secret (Greeter *greeter, gsize *offset)
675 if (greeter->priv->use_secure_memory)
676 return read_string_full (greeter, offset, gcry_malloc_secure);
678 return read_string_full (greeter, offset, g_malloc);
682 read_cb (GIOChannel *source, GIOCondition condition, gpointer data)
684 Greeter *greeter = data;
685 gsize n_to_read, n_read, offset;
688 guint32 sequence_number, n_secrets, max_secrets;
689 gchar *version, *username, *session_name, *language;
691 GError *error = NULL;
693 if (condition == G_IO_HUP)
695 g_debug ("Greeter closed communication channel");
699 n_to_read = HEADER_SIZE;
700 if (greeter->priv->n_read >= HEADER_SIZE)
702 n_to_read = get_message_length (greeter);
703 if (n_to_read <= HEADER_SIZE)
707 status = g_io_channel_read_chars (greeter->priv->from_greeter_channel,
708 (gchar *) greeter->priv->read_buffer + greeter->priv->n_read,
709 n_to_read - greeter->priv->n_read,
713 g_warning ("Error reading from greeter: %s", error->message);
714 g_clear_error (&error);
715 if (status != G_IO_STATUS_NORMAL)
718 greeter->priv->n_read += n_read;
719 if (greeter->priv->n_read != n_to_read)
722 /* If have header, rerun for content */
723 if (greeter->priv->n_read == HEADER_SIZE)
725 n_to_read = get_message_length (greeter);
726 if (n_to_read > HEADER_SIZE)
728 greeter->priv->read_buffer = secure_realloc (greeter, greeter->priv->read_buffer, n_to_read);
729 read_cb (source, condition, greeter);
735 id = read_int (greeter, &offset);
736 read_int (greeter, &offset);
739 case GREETER_MESSAGE_CONNECT:
740 version = read_string (greeter, &offset);
741 handle_connect (greeter, version);
744 case GREETER_MESSAGE_AUTHENTICATE:
745 sequence_number = read_int (greeter, &offset);
746 username = read_string (greeter, &offset);
747 handle_login (greeter, sequence_number, username);
750 case GREETER_MESSAGE_AUTHENTICATE_AS_GUEST:
751 sequence_number = read_int (greeter, &offset);
752 handle_login_as_guest (greeter, sequence_number);
754 case GREETER_MESSAGE_AUTHENTICATE_REMOTE:
755 sequence_number = read_int (greeter, &offset);
756 session_name = read_string (greeter, &offset);
757 username = read_string (greeter, &offset);
758 handle_login_remote (greeter, session_name, username, sequence_number);
760 case GREETER_MESSAGE_CONTINUE_AUTHENTICATION:
761 n_secrets = read_int (greeter, &offset);
762 max_secrets = (G_MAXUINT32 - 1) / sizeof (gchar *);
763 if (n_secrets > max_secrets)
765 g_warning ("Array length of %u elements too long", n_secrets);
768 secrets = g_malloc (sizeof (gchar *) * (n_secrets + 1));
769 for (i = 0; i < n_secrets; i++)
770 secrets[i] = read_secret (greeter, &offset);
772 handle_continue_authentication (greeter, secrets);
773 for (i = 0; i < n_secrets; i++)
774 secure_free (greeter, secrets[i]);
777 case GREETER_MESSAGE_CANCEL_AUTHENTICATION:
778 handle_cancel_authentication (greeter);
780 case GREETER_MESSAGE_START_SESSION:
781 session_name = read_string (greeter, &offset);
782 handle_start_session (greeter, session_name);
783 g_free (session_name);
785 case GREETER_MESSAGE_SET_LANGUAGE:
786 language = read_string (greeter, &offset);
787 handle_set_language (greeter, language);
791 g_warning ("Unknown message from greeter: %d", id);
795 greeter->priv->n_read = 0;
801 greeter_get_guest_authenticated (Greeter *greeter)
803 g_return_val_if_fail (greeter != NULL, FALSE);
804 return greeter->priv->guest_account_authenticated;
808 greeter_get_authentication_session (Greeter *greeter)
810 g_return_val_if_fail (greeter != NULL, NULL);
811 return greeter->priv->authentication_session;
815 greeter_get_start_session (Greeter *greeter)
817 g_return_val_if_fail (greeter != NULL, FALSE);
818 return greeter->priv->start_session;
822 greeter_start (Session *session)
824 Greeter *greeter = GREETER (session);
825 int to_greeter_pipe[2], from_greeter_pipe[2];
826 gboolean result = FALSE;
829 /* Create a pipe to talk with the greeter */
830 if (pipe (to_greeter_pipe) != 0 || pipe (from_greeter_pipe) != 0)
832 g_warning ("Failed to create pipes: %s", strerror (errno));
835 greeter->priv->to_greeter_channel = g_io_channel_unix_new (to_greeter_pipe[1]);
836 g_io_channel_set_encoding (greeter->priv->to_greeter_channel, NULL, NULL);
837 greeter->priv->from_greeter_channel = g_io_channel_unix_new (from_greeter_pipe[0]);
838 g_io_channel_set_encoding (greeter->priv->from_greeter_channel, NULL, NULL);
839 g_io_channel_set_buffered (greeter->priv->from_greeter_channel, FALSE);
840 g_io_add_watch (greeter->priv->from_greeter_channel, G_IO_IN | G_IO_HUP, read_cb, greeter);
842 /* Let the greeter session know how to communicate with the daemon */
843 value = g_strdup_printf ("%d", from_greeter_pipe[1]);
844 session_set_env (SESSION (greeter), "LIGHTDM_TO_SERVER_FD", value);
846 value = g_strdup_printf ("%d", to_greeter_pipe[0]);
847 session_set_env (SESSION (greeter), "LIGHTDM_FROM_SERVER_FD", value);
850 /* Don't allow the daemon end of the pipes to be accessed in child processes */
851 fcntl (to_greeter_pipe[1], F_SETFD, FD_CLOEXEC);
852 fcntl (from_greeter_pipe[0], F_SETFD, FD_CLOEXEC);
854 result = SESSION_CLASS (greeter_parent_class)->start (session);
856 /* Close the session ends of the pipe */
857 close (to_greeter_pipe[0]);
858 close (from_greeter_pipe[1]);
864 greeter_real_create_session (Greeter *greeter)
870 greeter_real_start_session (Greeter *greeter, SessionType type, const gchar *session)
876 greeter_init (Greeter *greeter)
878 greeter->priv = G_TYPE_INSTANCE_GET_PRIVATE (greeter, GREETER_TYPE, GreeterPrivate);
879 greeter->priv->read_buffer = secure_malloc (greeter, HEADER_SIZE);
880 greeter->priv->hints = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, g_free);
881 greeter->priv->use_secure_memory = config_get_boolean (config_get_instance (), "LightDM", "lock-memory");
885 greeter_finalize (GObject *object)
889 self = GREETER (object);
891 g_free (self->priv->pam_service);
892 g_free (self->priv->autologin_pam_service);
893 secure_free (self, self->priv->read_buffer);
894 g_hash_table_unref (self->priv->hints);
895 g_free (self->priv->remote_session);
896 if (self->priv->authentication_session)
898 g_signal_handlers_disconnect_matched (self->priv->authentication_session, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, self);
899 g_object_unref (self->priv->authentication_session);
901 if (self->priv->to_greeter_channel)
902 g_io_channel_unref (self->priv->to_greeter_channel);
903 if (self->priv->from_greeter_channel)
904 g_io_channel_unref (self->priv->from_greeter_channel);
906 G_OBJECT_CLASS (greeter_parent_class)->finalize (object);
910 greeter_class_init (GreeterClass *klass)
912 SessionClass *session_class = SESSION_CLASS (klass);
913 GObjectClass *object_class = G_OBJECT_CLASS (klass);
915 klass->create_session = greeter_real_create_session;
916 klass->start_session = greeter_real_start_session;
917 session_class->start = greeter_start;
918 object_class->finalize = greeter_finalize;
921 g_signal_new ("connected",
922 G_TYPE_FROM_CLASS (klass),
924 G_STRUCT_OFFSET (GreeterClass, connected),
926 g_cclosure_marshal_VOID__VOID,
929 signals[CREATE_SESSION] =
930 g_signal_new ("create-session",
931 G_TYPE_FROM_CLASS (klass),
933 G_STRUCT_OFFSET (GreeterClass, create_session),
934 g_signal_accumulator_first_wins,
936 ldm_marshal_OBJECT__VOID,
939 signals[START_SESSION] =
940 g_signal_new ("start-session",
941 G_TYPE_FROM_CLASS (klass),
943 G_STRUCT_OFFSET (GreeterClass, start_session),
944 g_signal_accumulator_true_handled,
946 ldm_marshal_BOOLEAN__INT_STRING,
947 G_TYPE_BOOLEAN, 2, G_TYPE_INT, G_TYPE_STRING);
949 g_type_class_add_private (klass, sizeof (GreeterPrivate));