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- Committer: Robert Ancell
- Date: 2011-05-05 06:11:16 UTC
- Revision ID: robert.ancell@canonical.com-20110505061116-4nhrdw6k0huve3ek
Move user manager into liblightdm
- files removed:
- liblightdm-qt/user-manager.xml
- files modified:
- doc/tmpl/user.sgml
added
removed
src/user-manager.c
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/*
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* Copyright (C) 2010 Robert Ancell.
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* Author: Robert Ancell <robert.ancell@canonical.com>
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*
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* This program is free software: you can redistribute it and/or modify it under
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* the terms of the GNU General Public License as published by the Free Software
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* Foundation, either version 3 of the License, or (at your option) any later
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* version. See http://www.gnu.org/copyleft/gpl.html the full text of the
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* license.
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*/
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#include <string.h>
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#include <pwd.h>
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#include <errno.h>
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#include <gio/gio.h>
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#include "user-manager.h"
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enum {
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USER_ADDED,
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USER_CHANGED,
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USER_REMOVED,
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LAST_SIGNAL
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};
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static guint signals[LAST_SIGNAL] = { 0 };
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struct UserManagerPrivate
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{
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/* Configuration file */
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GKeyFile *config;
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/* File monitor for password file */
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GFileMonitor *passwd_monitor;
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/* TRUE if have scanned users */
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gboolean have_users;
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/* List of users */
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GList *users;
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};
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G_DEFINE_TYPE (UserManager, user_manager, G_TYPE_OBJECT);
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UserManager *
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user_manager_new (GKeyFile *config_file)
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{
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UserManager *manager;
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manager = g_object_new (USER_MANAGER_TYPE, NULL);
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manager->priv->config = config_file;
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return manager;
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}
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static gint
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compare_user (gconstpointer a, gconstpointer b)
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{
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const UserInfo *user_a = a, *user_b = b;
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const gchar *name_a, *name_b;
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name_a = user_a->real_name ? user_a->real_name : user_a->name;
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name_b = user_b->real_name ? user_b->real_name : user_b->name;
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return strcmp (name_a, name_b);
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}
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static void
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load_users (UserManager *manager)
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{
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gchar **hidden_users, **hidden_shells;
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gchar *value;
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gint minimum_uid;
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GList *users = NULL, *old_users, *new_users = NULL, *changed_users = NULL, *link;
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if (g_key_file_has_key (manager->priv->config, "UserManager", "minimum-uid", NULL))
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minimum_uid = g_key_file_get_integer (manager->priv->config, "UserManager", "minimum-uid", NULL);
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else
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minimum_uid = 500;
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value = g_key_file_get_string (manager->priv->config, "UserManager", "hidden-users", NULL);
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if (!value)
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value = g_strdup ("nobody nobody4 noaccess");
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hidden_users = g_strsplit (value, " ", -1);
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g_free (value);
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value = g_key_file_get_string (manager->priv->config, "UserManager", "hidden-shells", NULL);
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if (!value)
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value = g_strdup ("/bin/false /usr/sbin/nologin");
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hidden_shells = g_strsplit (value, " ", -1);
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g_free (value);
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setpwent ();
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while (TRUE)
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{
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struct passwd *entry;
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UserInfo *user;
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char **tokens;
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gchar *image_path;
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int i;
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errno = 0;
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entry = getpwent ();
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if (!entry)
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break;
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/* Ignore system users */
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if (entry->pw_uid < minimum_uid)
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continue;
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/* Ignore users disabled by shell */
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if (entry->pw_shell)
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{
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for (i = 0; hidden_shells[i] && strcmp (entry->pw_shell, hidden_shells[i]) != 0; i++);
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if (hidden_shells[i])
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continue;
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}
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/* Ignore certain users */
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for (i = 0; hidden_users[i] && strcmp (entry->pw_name, hidden_users[i]) != 0; i++);
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if (hidden_users[i])
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continue;
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user = g_malloc0 (sizeof (UserInfo));
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user->name = g_strdup (entry->pw_name);
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tokens = g_strsplit (entry->pw_gecos, ",", -1);
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if (tokens[0] != NULL && tokens[0][0] != '\0')
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user->real_name = g_strdup (tokens[0]);
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else
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user->real_name = NULL;
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g_strfreev (tokens);
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user->home_dir = g_strdup (entry->pw_dir);
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image_path = g_build_filename (user->home_dir, ".face", NULL);
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if (!g_file_test (image_path, G_FILE_TEST_EXISTS))
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{
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g_free (image_path);
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image_path = g_build_filename (user->home_dir, ".face.icon", NULL);
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if (!g_file_test (image_path, G_FILE_TEST_EXISTS))
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{
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g_free (image_path);
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image_path = NULL;
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}
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}
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if (image_path)
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user->image = g_filename_to_uri (image_path, NULL, NULL);
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else
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user->image = g_strdup ("");
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g_free (image_path);
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/* Update existing users if have them */
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for (link = manager->priv->users; link; link = link->next)
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{
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UserInfo *info = link->data;
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if (strcmp (info->name, user->name) == 0)
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{
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if (strcmp (info->real_name, user->real_name) != 0 ||
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strcmp (info->image, user->image) != 0 ||
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strcmp (info->home_dir, user->home_dir) != 0 ||
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info->logged_in != user->logged_in)
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{
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g_free (info->real_name);
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g_free (info->image);
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g_free (info->home_dir);
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info->real_name = user->real_name;
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info->image = user->image;
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info->home_dir = user->home_dir;
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info->logged_in = user->logged_in;
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g_free (user);
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user = info;
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changed_users = g_list_insert_sorted (changed_users, user, compare_user);
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}
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else
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{
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g_free (user->real_name);
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g_free (user->image);
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g_free (user->home_dir);
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g_free (user);
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user = info;
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}
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break;
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}
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}
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if (!link)
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{
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/* Only notify once we have loaded the user list */
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if (manager->priv->have_users)
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new_users = g_list_insert_sorted (new_users, user, compare_user);
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}
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users = g_list_insert_sorted (users, user, compare_user);
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}
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g_strfreev (hidden_users);
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g_strfreev (hidden_shells);
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if (errno != 0)
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g_warning ("Failed to read password database: %s", strerror (errno));
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endpwent ();
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/* Use new user list */
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old_users = manager->priv->users;
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manager->priv->users = users;
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/* Notify of changes */
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for (link = new_users; link; link = link->next)
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{
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UserInfo *info = link->data;
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g_debug ("User %s added", info->name);
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g_signal_emit (manager, signals[USER_ADDED], 0, info);
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}
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g_list_free (new_users);
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for (link = changed_users; link; link = link->next)
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{
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UserInfo *info = link->data;
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g_debug ("User %s changed", info->name);
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g_signal_emit (manager, signals[USER_CHANGED], 0, info);
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}
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g_list_free (changed_users);
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for (link = old_users; link; link = link->next)
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{
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GList *new_link;
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/* See if this user is in the current list */
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for (new_link = manager->priv->users; new_link; new_link = new_link->next)
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{
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if (new_link->data == link->data)
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break;
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}
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if (!new_link)
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{
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UserInfo *info = link->data;
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g_debug ("User %s removed", info->name);
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g_signal_emit (manager, signals[USER_REMOVED], 0, info);
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g_free (info->name);
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g_free (info->real_name);
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g_free (info->image);
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g_free (info->home_dir);
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g_free (info);
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}
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}
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g_list_free (old_users);
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}
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static void
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passwd_changed_cb (GFileMonitor *monitor, GFile *file, GFile *other_file, GFileMonitorEvent event_type, UserManager *manager)
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{
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if (event_type == G_FILE_MONITOR_EVENT_CHANGES_DONE_HINT)
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{
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g_debug ("%s changed, reloading user list", g_file_get_path (file));
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load_users (manager);
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}
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}
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static void
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update_users (UserManager *manager)
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{
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GFile *passwd_file;
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GError *error = NULL;
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if (manager->priv->have_users)
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return;
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/* User listing is disabled */
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if (g_key_file_has_key (manager->priv->config, "UserManager", "load-users", NULL) &&
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!g_key_file_get_boolean (manager->priv->config, "UserManager", "load-users", NULL))
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{
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manager->priv->have_users = TRUE;
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return;
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}
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load_users (manager);
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/* Watch for changes to user list */
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passwd_file = g_file_new_for_path ("/etc/passwd");
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manager->priv->passwd_monitor = g_file_monitor (passwd_file, G_FILE_MONITOR_NONE, NULL, &error);
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g_object_unref (passwd_file);
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if (!manager->priv->passwd_monitor)
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g_warning ("Error monitoring /etc/passwd: %s", error->message);
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else
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g_signal_connect (manager->priv->passwd_monitor, "changed", G_CALLBACK (passwd_changed_cb), manager);
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g_clear_error (&error);
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manager->priv->have_users = TRUE;
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}
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gint
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user_manager_get_num_users (UserManager *manager)
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{
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update_users (manager);
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return g_list_length (manager->priv->users);
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}
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const UserInfo *
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user_manager_get_user (UserManager *manager, const gchar *username)
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{
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GList *link;
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update_users (manager);
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for (link = manager->priv->users; link; link = link->next)
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{
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UserInfo *info = link->data;
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if (strcmp (info->name, username) == 0)
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return info;
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}
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return NULL;
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}
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GList *
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user_manager_get_users (UserManager *manager)
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{
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update_users (manager);
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return manager->priv->users;
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}
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gboolean
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user_manager_get_user_defaults (UserManager *manager, gchar *username, gchar **language, gchar **layout, gchar **session)
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{
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const UserInfo *info;
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GKeyFile *dmrc_file;
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gboolean have_dmrc;
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gchar *path;
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info = user_manager_get_user (manager, username);
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if (!info)
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{
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g_debug ("Unable to get user defaults, user %s does not exist", username);
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return FALSE;
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}
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dmrc_file = g_key_file_new ();
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g_key_file_set_string (dmrc_file, "Desktop", "Language", "");
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g_key_file_set_string (dmrc_file, "Desktop", "Layout", "");
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g_key_file_set_string (dmrc_file, "Desktop", "Session", "");
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/* Load the users login settings (~/.dmrc) */
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path = g_build_filename (info->home_dir, ".dmrc", NULL);
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have_dmrc = g_key_file_load_from_file (dmrc_file, path, G_KEY_FILE_NONE, NULL);
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g_free (path);
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/* If no .dmrc, then load from the cache */
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if (!have_dmrc)
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{
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gchar *filename;
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filename = g_strdup_printf ("%s.dmrc", username);
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path = g_build_filename (CACHE_DIR, "dmrc", filename, NULL);
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g_free (filename);
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have_dmrc = g_key_file_load_from_file (dmrc_file, path, G_KEY_FILE_NONE, NULL);
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g_free (path);
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}
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*language = g_key_file_get_string (dmrc_file, "Desktop", "Language", NULL);
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*layout = g_key_file_get_string (dmrc_file, "Desktop", "Layout", NULL);
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*session = g_key_file_get_string (dmrc_file, "Desktop", "Session", NULL);
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g_key_file_free (dmrc_file);
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return TRUE;
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}
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static void
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user_manager_init (UserManager *manager)
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{
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manager->priv = G_TYPE_INSTANCE_GET_PRIVATE (manager, USER_MANAGER_TYPE, UserManagerPrivate);
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}
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static void
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user_manager_class_init (UserManagerClass *klass)
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{
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g_type_class_add_private (klass, sizeof (UserManagerPrivate));
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signals[USER_ADDED] =
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g_signal_new ("user-added",
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G_TYPE_FROM_CLASS (klass),
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G_SIGNAL_RUN_LAST,
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G_STRUCT_OFFSET (UserManagerClass, user_added),
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NULL, NULL,
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g_cclosure_marshal_VOID__POINTER,
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G_TYPE_NONE, 1, G_TYPE_POINTER);
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signals[USER_CHANGED] =
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g_signal_new ("user-changed",
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G_TYPE_FROM_CLASS (klass),
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G_SIGNAL_RUN_LAST,
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G_STRUCT_OFFSET (UserManagerClass, user_changed),
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NULL, NULL,
390
g_cclosure_marshal_VOID__POINTER,
391
G_TYPE_NONE, 1, G_TYPE_POINTER);
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signals[USER_REMOVED] =
393
g_signal_new ("user-removed",
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G_TYPE_FROM_CLASS (klass),
395
G_SIGNAL_RUN_LAST,
396
G_STRUCT_OFFSET (UserManagerClass, user_removed),
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NULL, NULL,
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g_cclosure_marshal_VOID__POINTER,
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G_TYPE_NONE, 1, G_TYPE_POINTER);
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}
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