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 /* Session running on */
37 /* PAM service to authenticate with */
39 gchar *autologin_pam_service;
41 /* Buffer for data read from greeter */
44 gboolean use_secure_memory;
46 /* Hints for the greeter */
49 /* Default session to use */
50 gchar *default_session;
52 /* Sequence number of current PAM session */
53 guint32 authentication_sequence_number;
55 /* Remote session name */
56 gchar *remote_session;
58 /* PAM session being constructed by the greeter */
59 Session *authentication_session;
61 /* TRUE if a user has been authenticated and the session requested to start */
62 gboolean start_session;
64 /* TRUE if can log into guest accounts */
67 /* TRUE if logging into guest session */
68 gboolean guest_account_authenticated;
70 /* Communication channels to communicate with */
71 GIOChannel *to_greeter_channel;
72 GIOChannel *from_greeter_channel;
75 G_DEFINE_TYPE (Greeter, greeter, G_TYPE_OBJECT);
77 /* Messages from the greeter to the server */
80 GREETER_MESSAGE_CONNECT = 0,
81 GREETER_MESSAGE_AUTHENTICATE,
82 GREETER_MESSAGE_AUTHENTICATE_AS_GUEST,
83 GREETER_MESSAGE_CONTINUE_AUTHENTICATION,
84 GREETER_MESSAGE_START_SESSION,
85 GREETER_MESSAGE_CANCEL_AUTHENTICATION,
86 GREETER_MESSAGE_SET_LANGUAGE,
87 GREETER_MESSAGE_AUTHENTICATE_REMOTE,
88 GREETER_MESSAGE_START_MIR_SESSION
91 /* Messages from the server to the greeter */
94 SERVER_MESSAGE_CONNECTED = 0,
95 SERVER_MESSAGE_PROMPT_AUTHENTICATION,
96 SERVER_MESSAGE_END_AUTHENTICATION,
97 SERVER_MESSAGE_SESSION_RESULT
100 static gboolean read_cb (GIOChannel *source, GIOCondition condition, gpointer data);
103 greeter_new (Session *session, const gchar *pam_service, const gchar *autologin_pam_service)
107 greeter = g_object_new (GREETER_TYPE, NULL);
108 greeter->priv->session = g_object_ref (session);
109 greeter->priv->pam_service = g_strdup (pam_service);
110 greeter->priv->autologin_pam_service = g_strdup (autologin_pam_service);
111 greeter->priv->use_secure_memory = config_get_boolean (config_get_instance (), "LightDM", "lock-memory");
117 greeter_set_allow_guest (Greeter *greeter, gboolean allow_guest)
119 greeter->priv->allow_guest = allow_guest;
123 greeter_set_hint (Greeter *greeter, const gchar *name, const gchar *value)
125 g_hash_table_insert (greeter->priv->hints, g_strdup (name), g_strdup (value));
129 secure_malloc (Greeter *greeter, size_t n)
131 if (greeter->priv->use_secure_memory)
132 return gcry_malloc_secure (n);
138 secure_realloc (Greeter *greeter, void *ptr, size_t n)
140 if (greeter->priv->use_secure_memory)
141 return gcry_realloc (ptr, n);
143 return g_realloc (ptr, n);
147 secure_free (Greeter *greeter, void *ptr)
149 if (greeter->priv->use_secure_memory)
150 return gcry_free (ptr);
161 #define HEADER_SIZE (sizeof (guint32) * 2)
162 #define MAX_MESSAGE_LENGTH 1024
165 write_message (Greeter *greeter, guint8 *message, gsize message_length)
167 GError *error = NULL;
169 g_io_channel_write_chars (greeter->priv->to_greeter_channel, (gchar *) message, message_length, NULL, &error);
171 g_warning ("Error writing to greeter: %s", error->message);
172 g_clear_error (&error);
173 g_io_channel_flush (greeter->priv->to_greeter_channel, NULL);
177 write_int (guint8 *buffer, gint buffer_length, guint32 value, gsize *offset)
179 if (*offset + 4 >= buffer_length)
181 buffer[*offset] = value >> 24;
182 buffer[*offset+1] = (value >> 16) & 0xFF;
183 buffer[*offset+2] = (value >> 8) & 0xFF;
184 buffer[*offset+3] = value & 0xFF;
189 write_string (guint8 *buffer, gint buffer_length, const gchar *value, gsize *offset)
194 length = strlen (value);
197 write_int (buffer, buffer_length, length, offset);
198 if (*offset + length >= buffer_length)
202 memcpy (buffer + *offset, value, length);
208 write_header (guint8 *buffer, gint buffer_length, guint32 id, guint32 length, gsize *offset)
210 write_int (buffer, buffer_length, id, offset);
211 write_int (buffer, buffer_length, length, offset);
215 string_length (const gchar *value)
218 return int_length ();
220 return int_length () + strlen (value);
224 handle_connect (Greeter *greeter, const gchar *version)
226 guint8 message[MAX_MESSAGE_LENGTH];
232 g_debug ("Greeter connected version=%s", version);
234 length = string_length (VERSION);
235 g_hash_table_iter_init (&iter, greeter->priv->hints);
236 while (g_hash_table_iter_next (&iter, &key, &value))
237 length += string_length (key) + string_length (value);
239 write_header (message, MAX_MESSAGE_LENGTH, SERVER_MESSAGE_CONNECTED, length, &offset);
240 write_string (message, MAX_MESSAGE_LENGTH, VERSION, &offset);
241 g_hash_table_iter_init (&iter, greeter->priv->hints);
242 while (g_hash_table_iter_next (&iter, &key, &value))
244 write_string (message, MAX_MESSAGE_LENGTH, key, &offset);
245 write_string (message, MAX_MESSAGE_LENGTH, value, &offset);
247 write_message (greeter, message, offset);
249 g_signal_emit (greeter, signals[CONNECTED], 0);
253 pam_messages_cb (Session *session, Greeter *greeter)
257 guint8 message[MAX_MESSAGE_LENGTH];
258 const struct pam_message *messages;
263 messages = session_get_messages (session);
264 messages_length = session_get_messages_length (session);
266 /* Respond to d-bus query with messages */
267 g_debug ("Prompt greeter with %d message(s)", messages_length);
268 size = int_length () + string_length (session_get_username (session)) + int_length ();
269 for (i = 0; i < messages_length; i++)
270 size += int_length () + string_length (messages[i].msg);
272 write_header (message, MAX_MESSAGE_LENGTH, SERVER_MESSAGE_PROMPT_AUTHENTICATION, size, &offset);
273 write_int (message, MAX_MESSAGE_LENGTH, greeter->priv->authentication_sequence_number, &offset);
274 write_string (message, MAX_MESSAGE_LENGTH, session_get_username (session), &offset);
275 write_int (message, MAX_MESSAGE_LENGTH, messages_length, &offset);
276 for (i = 0; i < messages_length; i++)
278 write_int (message, MAX_MESSAGE_LENGTH, messages[i].msg_style, &offset);
279 write_string (message, MAX_MESSAGE_LENGTH, messages[i].msg, &offset);
281 if (messages[i].msg_style == PAM_PROMPT_ECHO_OFF || messages[i].msg_style == PAM_PROMPT_ECHO_ON)
284 write_message (greeter, message, offset);
286 /* Continue immediately if nothing to respond with */
287 // FIXME: Should probably give the greeter a chance to ack the message
290 struct pam_response *response;
291 response = calloc (messages_length, sizeof (struct pam_response));
292 session_respond (greeter->priv->authentication_session, response);
298 send_end_authentication (Greeter *greeter, guint32 sequence_number, const gchar *username, int result)
300 guint8 message[MAX_MESSAGE_LENGTH];
303 write_header (message, MAX_MESSAGE_LENGTH, SERVER_MESSAGE_END_AUTHENTICATION, int_length () + string_length (username) + int_length (), &offset);
304 write_int (message, MAX_MESSAGE_LENGTH, sequence_number, &offset);
305 write_string (message, MAX_MESSAGE_LENGTH, username, &offset);
306 write_int (message, MAX_MESSAGE_LENGTH, result, &offset);
307 write_message (greeter, message, offset);
311 authentication_complete_cb (Session *session, Greeter *greeter)
315 g_debug ("Authenticate result for user %s: %s", session_get_username (session), session_get_authentication_result_string (session));
317 result = session_get_authentication_result (session);
318 if (session_get_is_authenticated (session))
320 if (session_get_user (session))
321 g_debug ("User %s authorized", session_get_username (session));
324 g_debug ("User %s authorized, but no account of that name exists", session_get_username (session));
325 result = PAM_USER_UNKNOWN;
329 send_end_authentication (greeter, greeter->priv->authentication_sequence_number, session_get_username (session), result);
333 reset_session (Greeter *greeter)
335 g_free (greeter->priv->remote_session);
336 greeter->priv->remote_session = NULL;
337 if (greeter->priv->authentication_session)
339 g_signal_handlers_disconnect_matched (greeter->priv->authentication_session, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, greeter);
340 session_stop (greeter->priv->authentication_session);
341 g_object_unref (greeter->priv->authentication_session);
342 greeter->priv->authentication_session = NULL;
345 greeter->priv->guest_account_authenticated = FALSE;
349 handle_login (Greeter *greeter, guint32 sequence_number, const gchar *username)
351 const gchar *autologin_username, *service;
352 gboolean is_interactive;
354 if (username[0] == '\0')
356 g_debug ("Greeter start authentication");
360 g_debug ("Greeter start authentication for %s", username);
362 reset_session (greeter);
364 greeter->priv->authentication_sequence_number = sequence_number;
365 g_signal_emit (greeter, signals[START_AUTHENTICATION], 0, username, &greeter->priv->authentication_session);
366 if (!greeter->priv->authentication_session)
368 send_end_authentication (greeter, sequence_number, "", PAM_USER_UNKNOWN);
372 g_signal_connect (G_OBJECT (greeter->priv->authentication_session), "got-messages", G_CALLBACK (pam_messages_cb), greeter);
373 g_signal_connect (G_OBJECT (greeter->priv->authentication_session), "authentication-complete", G_CALLBACK (authentication_complete_cb), greeter);
375 /* Use non-interactive service for autologin user */
376 autologin_username = g_hash_table_lookup (greeter->priv->hints, "autologin-user");
377 if (autologin_username != NULL && g_strcmp0 (username, autologin_username) == 0)
379 service = greeter->priv->autologin_pam_service;
380 is_interactive = FALSE;
384 service = greeter->priv->pam_service;
385 is_interactive = TRUE;
388 /* Run the session process */
389 session_start (greeter->priv->authentication_session, service, username, TRUE, is_interactive, FALSE);
393 handle_login_as_guest (Greeter *greeter, guint32 sequence_number)
395 g_debug ("Greeter start authentication for guest account");
397 reset_session (greeter);
399 if (!greeter->priv->allow_guest)
401 g_debug ("Guest account is disabled");
402 send_end_authentication (greeter, sequence_number, "", PAM_USER_UNKNOWN);
406 greeter->priv->guest_account_authenticated = TRUE;
407 send_end_authentication (greeter, sequence_number, "", PAM_SUCCESS);
411 get_remote_session_service (const gchar *session_name)
413 GKeyFile *session_desktop_file;
416 gchar *remote_sessions_dir, *filename, *path, *service = NULL;
417 GError *error = NULL;
419 /* Validate session name doesn't contain directory separators */
420 for (c = session_name; *c; c++)
426 /* Load the session file */
427 session_desktop_file = g_key_file_new ();
428 filename = g_strdup_printf ("%s.desktop", session_name);
429 remote_sessions_dir = config_get_string (config_get_instance (), "LightDM", "remote-sessions-directory");
430 path = g_build_filename (remote_sessions_dir, filename, NULL);
431 g_free (remote_sessions_dir);
433 result = g_key_file_load_from_file (session_desktop_file, path, G_KEY_FILE_NONE, &error);
435 g_debug ("Failed to load session file %s: %s", path, error->message);
437 g_clear_error (&error);
439 service = g_key_file_get_string (session_desktop_file, G_KEY_FILE_DESKTOP_GROUP, "X-LightDM-PAM-Service", NULL);
440 g_key_file_free (session_desktop_file);
446 handle_login_remote (Greeter *greeter, const gchar *session_name, const gchar *username, guint32 sequence_number)
450 if (username[0] == '\0')
452 g_debug ("Greeter start authentication for remote session %s", session_name);
456 g_debug ("Greeter start authentication for remote session %s as user %s", session_name, username);
458 reset_session (greeter);
460 service = get_remote_session_service (session_name);
463 send_end_authentication (greeter, sequence_number, "", PAM_SYSTEM_ERR);
467 greeter->priv->authentication_sequence_number = sequence_number;
468 greeter->priv->remote_session = g_strdup (session_name);
469 g_signal_emit (greeter, signals[START_AUTHENTICATION], 0, username, &greeter->priv->authentication_session);
470 if (greeter->priv->authentication_session)
472 g_signal_connect (G_OBJECT (greeter->priv->authentication_session), "got-messages", G_CALLBACK (pam_messages_cb), greeter);
473 g_signal_connect (G_OBJECT (greeter->priv->authentication_session), "authentication-complete", G_CALLBACK (authentication_complete_cb), greeter);
475 /* Run the session process */
476 session_start (greeter->priv->authentication_session, service, username, TRUE, TRUE, TRUE);
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, SessionType session_type, const gchar *session)
554 guint8 message[MAX_MESSAGE_LENGTH];
557 if (strcmp (session, "") == 0)
560 /* Use session type chosen in remote session */
561 if (greeter->priv->remote_session)
563 session_type = SESSION_TYPE_REMOTE;
564 session = greeter->priv->remote_session;
567 if (greeter->priv->guest_account_authenticated || session_get_is_authenticated (greeter->priv->authentication_session))
570 g_debug ("Greeter requests session %s", session);
572 g_debug ("Greeter requests default session");
573 greeter->priv->start_session = TRUE;
574 g_signal_emit (greeter, signals[START_SESSION], 0, session_type, session, &result);
578 g_debug ("Ignoring start session request, user is not authorized");
582 write_header (message, MAX_MESSAGE_LENGTH, SERVER_MESSAGE_SESSION_RESULT, int_length (), &offset);
583 write_int (message, MAX_MESSAGE_LENGTH, result ? 0 : 1, &offset);
584 write_message (greeter, message, offset);
588 handle_set_language (Greeter *greeter, const gchar *language)
592 if (!greeter->priv->guest_account_authenticated && !session_get_is_authenticated (greeter->priv->authentication_session))
594 g_debug ("Ignoring set language request, user is not authorized");
598 // FIXME: Could use this
599 if (greeter->priv->guest_account_authenticated)
601 g_debug ("Ignoring set language request for guest user");
605 g_debug ("Greeter sets language %s", language);
606 user = session_get_user (greeter->priv->authentication_session);
607 user_set_language (user, language);
611 read_int (Greeter *greeter, gsize *offset)
615 if (greeter->priv->n_read - *offset < sizeof (guint32))
617 g_warning ("Not enough space for int, need %zu, got %zu", sizeof (guint32), greeter->priv->n_read - *offset);
620 buffer = greeter->priv->read_buffer + *offset;
621 value = buffer[0] << 24 | buffer[1] << 16 | buffer[2] << 8 | buffer[3];
622 *offset += int_length ();
627 get_message_length (Greeter *greeter)
632 offset = int_length ();
633 payload_length = read_int (greeter, &offset);
635 if (HEADER_SIZE + payload_length < HEADER_SIZE)
637 g_warning ("Payload length of %u octets too long", payload_length);
641 return HEADER_SIZE + payload_length;
645 read_string_full (Greeter *greeter, gsize *offset, void* (*alloc_fn)(size_t n))
650 length = read_int (greeter, offset);
651 if (greeter->priv->n_read - *offset < length)
653 g_warning ("Not enough space for string, need %u, got %zu", length, greeter->priv->n_read - *offset);
654 return g_strdup ("");
657 value = (*alloc_fn) (sizeof (gchar *) * (length + 1));
658 memcpy (value, greeter->priv->read_buffer + *offset, length);
659 value[length] = '\0';
666 read_string (Greeter *greeter, gsize *offset)
668 return read_string_full (greeter, offset, g_malloc);
672 read_secret (Greeter *greeter, gsize *offset)
674 if (greeter->priv->use_secure_memory)
675 return read_string_full (greeter, offset, gcry_malloc_secure);
677 return read_string_full (greeter, offset, g_malloc);
681 read_cb (GIOChannel *source, GIOCondition condition, gpointer data)
683 Greeter *greeter = data;
684 gsize n_to_read, n_read, offset;
687 guint32 sequence_number, n_secrets, max_secrets;
688 gchar *version, *username, *session_name, *language;
690 GError *error = NULL;
692 if (condition == G_IO_HUP)
694 g_debug ("Greeter closed communication channel");
698 n_to_read = HEADER_SIZE;
699 if (greeter->priv->n_read >= HEADER_SIZE)
701 n_to_read = get_message_length (greeter);
702 if (n_to_read <= HEADER_SIZE)
706 status = g_io_channel_read_chars (greeter->priv->from_greeter_channel,
707 (gchar *) greeter->priv->read_buffer + greeter->priv->n_read,
708 n_to_read - greeter->priv->n_read,
712 g_warning ("Error reading from greeter: %s", error->message);
713 g_clear_error (&error);
714 if (status != G_IO_STATUS_NORMAL)
717 greeter->priv->n_read += n_read;
718 if (greeter->priv->n_read != n_to_read)
721 /* If have header, rerun for content */
722 if (greeter->priv->n_read == HEADER_SIZE)
724 n_to_read = get_message_length (greeter);
725 if (n_to_read > HEADER_SIZE)
727 greeter->priv->read_buffer = secure_realloc (greeter, greeter->priv->read_buffer, n_to_read);
728 read_cb (source, condition, greeter);
734 id = read_int (greeter, &offset);
735 read_int (greeter, &offset);
738 case GREETER_MESSAGE_CONNECT:
739 version = read_string (greeter, &offset);
740 handle_connect (greeter, version);
743 case GREETER_MESSAGE_AUTHENTICATE:
744 sequence_number = read_int (greeter, &offset);
745 username = read_string (greeter, &offset);
746 handle_login (greeter, sequence_number, username);
749 case GREETER_MESSAGE_AUTHENTICATE_AS_GUEST:
750 sequence_number = read_int (greeter, &offset);
751 handle_login_as_guest (greeter, sequence_number);
753 case GREETER_MESSAGE_AUTHENTICATE_REMOTE:
754 sequence_number = read_int (greeter, &offset);
755 session_name = read_string (greeter, &offset);
756 username = read_string (greeter, &offset);
757 handle_login_remote (greeter, session_name, username, sequence_number);
759 case GREETER_MESSAGE_CONTINUE_AUTHENTICATION:
760 n_secrets = read_int (greeter, &offset);
761 max_secrets = (G_MAXUINT32 - 1) / sizeof (gchar *);
762 if (n_secrets > max_secrets)
764 g_warning ("Array length of %u elements too long", n_secrets);
767 secrets = g_malloc (sizeof (gchar *) * (n_secrets + 1));
768 for (i = 0; i < n_secrets; i++)
769 secrets[i] = read_secret (greeter, &offset);
771 handle_continue_authentication (greeter, secrets);
772 for (i = 0; i < n_secrets; i++)
773 secure_free (greeter, secrets[i]);
776 case GREETER_MESSAGE_CANCEL_AUTHENTICATION:
777 handle_cancel_authentication (greeter);
779 case GREETER_MESSAGE_START_SESSION:
780 session_name = read_string (greeter, &offset);
781 handle_start_session (greeter, SESSION_TYPE_LOCAL, session_name);
782 g_free (session_name);
784 case GREETER_MESSAGE_START_MIR_SESSION:
785 session_name = read_string (greeter, &offset);
786 handle_start_session (greeter, SESSION_TYPE_MIR, session_name);
787 g_free (session_name);
789 case GREETER_MESSAGE_SET_LANGUAGE:
790 language = read_string (greeter, &offset);
791 handle_set_language (greeter, language);
795 g_warning ("Unknown message from greeter: %d", id);
799 greeter->priv->n_read = 0;
805 greeter_get_guest_authenticated (Greeter *greeter)
807 g_return_val_if_fail (greeter != NULL, FALSE);
808 return greeter->priv->guest_account_authenticated;
812 greeter_get_authentication_session (Greeter *greeter)
814 g_return_val_if_fail (greeter != NULL, NULL);
815 return greeter->priv->authentication_session;
819 greeter_get_start_session (Greeter *greeter)
821 g_return_val_if_fail (greeter != NULL, FALSE);
822 return greeter->priv->start_session;
826 greeter_start (Greeter *greeter, const gchar *service, const gchar *username)
828 int to_greeter_pipe[2], from_greeter_pipe[2];
829 gboolean result = FALSE;
832 /* Create a pipe to talk with the greeter */
833 if (pipe (to_greeter_pipe) != 0 || pipe (from_greeter_pipe) != 0)
835 g_warning ("Failed to create pipes: %s", strerror (errno));
838 greeter->priv->to_greeter_channel = g_io_channel_unix_new (to_greeter_pipe[1]);
839 g_io_channel_set_encoding (greeter->priv->to_greeter_channel, NULL, NULL);
840 greeter->priv->from_greeter_channel = g_io_channel_unix_new (from_greeter_pipe[0]);
841 g_io_channel_set_encoding (greeter->priv->from_greeter_channel, NULL, NULL);
842 g_io_channel_set_buffered (greeter->priv->from_greeter_channel, FALSE);
843 g_io_add_watch (greeter->priv->from_greeter_channel, G_IO_IN | G_IO_HUP, read_cb, greeter);
845 /* Let the greeter session know how to communicate with the daemon */
846 value = g_strdup_printf ("%d", from_greeter_pipe[1]);
847 session_set_env (greeter->priv->session, "LIGHTDM_TO_SERVER_FD", value);
849 value = g_strdup_printf ("%d", to_greeter_pipe[0]);
850 session_set_env (greeter->priv->session, "LIGHTDM_FROM_SERVER_FD", value);
853 /* Don't allow the daemon end of the pipes to be accessed in child processes */
854 fcntl (to_greeter_pipe[1], F_SETFD, FD_CLOEXEC);
855 fcntl (from_greeter_pipe[0], F_SETFD, FD_CLOEXEC);
857 result = session_start (greeter->priv->session, service, username, FALSE, FALSE, FALSE);
859 /* Close the session ends of the pipe */
860 close (to_greeter_pipe[0]);
861 close (from_greeter_pipe[1]);
867 greeter_real_start_authentication (Greeter *greeter, const gchar *username)
873 greeter_real_start_session (Greeter *greeter, SessionType type, const gchar *session)
879 greeter_init (Greeter *greeter)
881 greeter->priv = G_TYPE_INSTANCE_GET_PRIVATE (greeter, GREETER_TYPE, GreeterPrivate);
882 greeter->priv->read_buffer = secure_malloc (greeter, HEADER_SIZE);
883 greeter->priv->hints = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, g_free);
887 greeter_finalize (GObject *object)
891 self = GREETER (object);
893 g_signal_handlers_disconnect_matched (self->priv->session, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, self);
894 g_object_unref (self->priv->session);
895 g_free (self->priv->pam_service);
896 g_free (self->priv->autologin_pam_service);
897 secure_free (self, self->priv->read_buffer);
898 g_hash_table_unref (self->priv->hints);
899 g_free (self->priv->remote_session);
900 if (self->priv->authentication_session)
902 g_signal_handlers_disconnect_matched (self->priv->authentication_session, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, self);
903 g_object_unref (self->priv->authentication_session);
905 if (self->priv->to_greeter_channel)
906 g_io_channel_unref (self->priv->to_greeter_channel);
907 if (self->priv->from_greeter_channel)
908 g_io_channel_unref (self->priv->from_greeter_channel);
910 G_OBJECT_CLASS (greeter_parent_class)->finalize (object);
914 greeter_class_init (GreeterClass *klass)
916 GObjectClass *object_class = G_OBJECT_CLASS (klass);
918 klass->start_authentication = greeter_real_start_authentication;
919 klass->start_session = greeter_real_start_session;
920 object_class->finalize = greeter_finalize;
923 g_signal_new ("connected",
924 G_TYPE_FROM_CLASS (klass),
926 G_STRUCT_OFFSET (GreeterClass, connected),
928 g_cclosure_marshal_VOID__VOID,
931 signals[START_AUTHENTICATION] =
932 g_signal_new ("start-authentication",
933 G_TYPE_FROM_CLASS (klass),
935 G_STRUCT_OFFSET (GreeterClass, start_authentication),
936 g_signal_accumulator_first_wins,
938 ldm_marshal_OBJECT__STRING,
939 SESSION_TYPE, 1, G_TYPE_STRING);
941 signals[START_SESSION] =
942 g_signal_new ("start-session",
943 G_TYPE_FROM_CLASS (klass),
945 G_STRUCT_OFFSET (GreeterClass, start_session),
946 g_signal_accumulator_true_handled,
948 ldm_marshal_BOOLEAN__INT_STRING,
949 G_TYPE_BOOLEAN, 2, G_TYPE_INT, G_TYPE_STRING);
951 g_type_class_add_private (klass, sizeof (GreeterPrivate));