/* $Id: locker.c,v 1.27 2012/01/02 08:03:56 khorben Exp $ */ static char const _copyright[] = "Copyright (c) 2012 Pierre Pronchery "; /* This file is part of DeforaOS Desktop Locker */ static char const _license[] = "This program is free software: you can redistribute it and/or modify\n" "it under the terms of the GNU General Public License as published by\n" "the Free Software Foundation, version 3 of the License.\n" "\n" "This program is distributed in the hope that it will be useful,\n" "but WITHOUT ANY WARRANTY; without even the implied warranty of\n" "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n" "GNU General Public License for more details.\n" "\n" "You should have received a copy of the GNU General Public License\n" "along with this program. If not, see ."; #include #include #include #include #include #include #include #include #include #include #include #include "locker.h" #include "../config.h" #define _(string) gettext(string) #define max(a, b) ((a) > (b) ? (a) : (b)) #define min(a, b) ((a) < (b) ? (a) : (b)) /* Locker */ /* private */ /* types */ typedef struct _LockerPlugins { Plugin * pplugin; LockerPlugin * plugin; } LockerPlugins; struct _Locker { /* settings */ int suspend; Config * config; /* internal */ GdkDisplay * display; int screen; int event; GtkWidget ** windows; size_t windows_cnt; /* auth */ Plugin * aplugin; LockerAuth * auth; LockerAuthHelper ahelper; /* demo */ Plugin * dplugin; LockerDemo * demo; LockerDemoHelper dhelper; /* plug-ins */ LockerPlugins * plugins; size_t plugins_cnt; LockerPluginHelper phelper; /* preferences */ GtkWidget * pr_window; /* about */ GtkWidget * ab_window; }; /* constants */ #define LOCKER_CONFIG_FILE ".locker" static char const * _authors[] = { "Pierre Pronchery ", NULL }; /* prototypes */ static void _locker_about(Locker * locker); static void _locker_action(Locker * locker, LockerAction action); static void _locker_activate(Locker * locker); static char const * _locker_auth_config_get(Locker * locker, char const * section, char const * variable); static int _locker_auth_config_set(Locker * locker, char const * section, char const * variable, char const * value); static char const * _locker_demo_config_get(Locker * locker, char const * section, char const * variable); static int _locker_demo_config_set(Locker * locker, char const * section, char const * variable, char const * value); static int _locker_error(Locker * locker, char const * message, int ret); static void _locker_event(Locker * locker, LockerEvent event); static void _locker_lock(Locker * locker); static char const * _locker_plugin_config_get(Locker * locker, char const * section, char const * variable); static int _locker_plugin_config_set(Locker * locker, char const * section, char const * variable, char const * value); static void _locker_unlock(Locker * locker); /* callbacks */ static gboolean _lock_on_closex(void); static GdkFilterReturn _locker_on_filter(GdkXEvent * xevent, GdkEvent * event, gpointer data); static gboolean _locker_on_map_event(gpointer data); static int _locker_on_message(void * data, uint32_t value1, uint32_t value2, uint32_t value3); static void _locker_on_realize(GtkWidget * widget, gpointer data); /* public */ /* functions */ /* locker_new */ static int _new_config(Locker * locker); static int _new_demo(Locker * locker, char const * demo); static void _new_helpers(Locker * locker); static GtkWidget * _new_auth(Locker * locker, char const * plugin); static int _new_plugins(Locker * locker); static int _new_plugins_load(Locker * locker, char const * plugin); static int _new_xss(Locker * locker, size_t cnt); Locker * locker_new(int suspend, char const * demo, char const * auth) { Locker * locker; GdkScreen * screen; GtkWidget * widget = NULL; size_t cnt; size_t i; GdkColor black; GdkRectangle rect; GdkWindow * root; if((locker = object_new(sizeof(*locker))) == NULL) { _locker_error(NULL, error_get(), 1); return NULL; } _new_helpers(locker); locker->suspend = (suspend != 0) ? 1 : 0; screen = gdk_screen_get_default(); locker->display = gdk_screen_get_display(screen); locker->screen = gdk_x11_get_default_screen(); if((cnt = gdk_screen_get_n_monitors(screen)) < 1) cnt = 1; locker->windows = NULL; locker->windows_cnt = cnt; locker->dplugin = NULL; locker->demo = NULL; locker->plugins = NULL; locker->plugins_cnt = 0; locker->pr_window = NULL; locker->ab_window = NULL; /* check for errors */ if(_new_config(locker) != 0 || _new_demo(locker, demo) != 0 || (widget = _new_auth(locker, auth)) == NULL || _new_xss(locker, cnt) != 0) { _locker_error(NULL, error_get(), 1); locker_delete(locker); return NULL; } _new_plugins(locker); /* create windows */ memset(&black, 0, sizeof(black)); for(i = 0; i < locker->windows_cnt; i++) { locker->windows[i] = gtk_window_new(GTK_WINDOW_TOPLEVEL); gdk_screen_get_monitor_geometry(screen, i, &rect); gtk_window_move(GTK_WINDOW(locker->windows[i]), rect.x, rect.y); gtk_window_resize(GTK_WINDOW(locker->windows[i]), rect.width, rect.height); gtk_window_set_keep_above(GTK_WINDOW(locker->windows[i]), TRUE); gtk_window_stick(GTK_WINDOW(locker->windows[i])); gtk_widget_modify_bg(locker->windows[i], GTK_STATE_NORMAL, &black); g_signal_connect_swapped(G_OBJECT(locker->windows[i]), "delete-event", G_CALLBACK(_lock_on_closex), NULL); g_signal_connect(locker->windows[i], "realize", G_CALLBACK( _locker_on_realize), locker); } /* automatically grab keyboard and mouse */ g_signal_connect_swapped(G_OBJECT(locker->windows[0]), "map-event", G_CALLBACK(_locker_on_map_event), locker); /* pack the authentication widget */ gtk_container_add(GTK_CONTAINER(locker->windows[0]), widget); root = gdk_get_default_root_window(); XScreenSaverSelectInput(GDK_DISPLAY_XDISPLAY(locker->display), GDK_WINDOW_XWINDOW(root), ScreenSaverNotifyMask); gdk_x11_register_standard_event_type(locker->display, locker->event, 1); gdk_window_add_filter(root, _locker_on_filter, locker); desktop_message_register(LOCKER_CLIENT_MESSAGE, _locker_on_message, locker); return locker; } static int _new_config(Locker * locker) { char const * homedir; char * filename; if((locker->config = config_new()) == NULL) return -1; if((homedir = getenv("HOME")) == NULL) homedir = g_get_home_dir(); if((filename = malloc(strlen(homedir) + sizeof(LOCKER_CONFIG_FILE) + 1)) == NULL) return -1; sprintf(filename, "%s/%s", homedir, LOCKER_CONFIG_FILE); if(config_load(locker->config, filename) != 0) _locker_error(NULL, error_get(), 1); free(filename); return 0; } static GtkWidget * _new_auth(Locker * locker, char const * plugin) { GtkWidget * widget; if(plugin == NULL) plugin = config_get(locker->config, NULL, "auth"); if(plugin == NULL) #ifdef EMBEDDED plugin = "slider"; #else plugin = "password"; #endif if((locker->aplugin = plugin_new(LIBDIR, PACKAGE, "auth", plugin)) == NULL) return NULL; if((locker->auth = plugin_lookup(locker->aplugin, "plugin")) == NULL) return NULL; locker->auth->helper = &locker->ahelper; if(locker->auth->init == NULL || locker->auth->action == NULL || (widget = locker->auth->init(locker->auth)) == NULL) { locker->auth = NULL; return NULL; } return widget; } static int _new_demo(Locker * locker, char const * demo) { if(demo == NULL && (demo = config_get(locker->config, NULL, "demo")) == NULL) return 0; if((locker->dplugin = plugin_new(LIBDIR, PACKAGE, "demos", demo)) == NULL) return -1; if((locker->demo = plugin_lookup(locker->dplugin, "demo")) == NULL) return -1; locker->demo->helper = &locker->dhelper; if(locker->demo->init != NULL && locker->demo->init(locker->demo) != 0) { locker->demo = NULL; return -1; } return 0; } static void _new_helpers(Locker * locker) { /* authentication helper */ locker->ahelper.locker = locker; locker->ahelper.error = _locker_error; locker->ahelper.action = _locker_action; locker->ahelper.config_get = _locker_auth_config_get; locker->ahelper.config_set = _locker_auth_config_set; /* demo helper */ locker->dhelper.locker = locker; locker->dhelper.error = _locker_error; locker->dhelper.config_get = _locker_demo_config_get; locker->dhelper.config_set = _locker_demo_config_set; /* plug-ins helper */ locker->phelper.locker = locker; locker->phelper.error = _locker_error; locker->phelper.about_dialog = _locker_about; locker->phelper.action = _locker_action; locker->phelper.config_get = _locker_plugin_config_get; locker->phelper.config_set = _locker_plugin_config_set; } static int _new_plugins(Locker * locker) { int ret = 0; char const * p; String * plugins; size_t i; int c; if((p = config_get(locker->config, NULL, "plugins")) == NULL) return 0; if((plugins = string_new(p)) == NULL) return -1; for(i = 0;; i++) { if(plugins[i] != ',' && plugins[i] != '\0') continue; c = plugins[i]; plugins[i] = '\0'; ret |= _new_plugins_load(locker, plugins); if(c == '\0') break; plugins += i + 1; i = 0; } string_delete(plugins); return ret; } static int _new_plugins_load(Locker * locker, char const * plugin) { LockerPlugins * p; if((p = realloc(locker->plugins, sizeof(*p) * (locker->plugins_cnt + 1))) == NULL) return _locker_error(NULL, strerror(errno), 1); locker->plugins = p; p = &locker->plugins[locker->plugins_cnt]; if((p->pplugin = plugin_new(LIBDIR, PACKAGE, "plugins", plugin)) == NULL) return _locker_error(NULL, error_get(), 1); if((p->plugin = plugin_lookup(p->pplugin, "plugin")) == NULL) { plugin_delete(p->pplugin); return _locker_error(NULL, error_get(), 1); } p->plugin->helper = &locker->phelper; if(p->plugin->init != NULL && p->plugin->init(p->plugin) != 0) { plugin_delete(p->pplugin); return _locker_error(NULL, error_get(), 1); } locker->plugins_cnt++; return 0; } static int _new_xss(Locker * locker, size_t cnt) { int error; /* register as screensaver */ if(XScreenSaverQueryExtension(GDK_DISPLAY_XDISPLAY(locker->display), &locker->event, &error) == 0 || XScreenSaverRegister(GDK_DISPLAY_XDISPLAY( locker->display), locker->screen, getpid(), XA_INTEGER) == 0 || (locker->windows = malloc(sizeof(*locker->windows) * cnt)) == NULL) return -error_set_code(1, "%s", _( "Could not register as screensaver")); return 0; } /* locker_delete */ void locker_delete(Locker * locker) { size_t i; /* FIXME also destroy plug-ins */ if(locker->auth != NULL && locker->auth->destroy != NULL) locker->auth->destroy(locker->auth); if(locker->aplugin != NULL) plugin_delete(locker->aplugin); if(locker->demo != NULL) { if(locker->demo->remove != NULL) for(i = 0; i < locker->windows_cnt; i++) locker->demo->remove(locker->demo, locker->windows[i]); if(locker->demo->destroy != NULL) locker->demo->destroy(locker->demo); } if(locker->dplugin != NULL) plugin_delete(locker->dplugin); if(locker->ab_window != NULL) gtk_widget_destroy(locker->ab_window); free(locker->windows); XScreenSaverUnregister(GDK_DISPLAY_XDISPLAY(locker->display), locker->screen); if(locker->config != NULL) config_delete(locker->config); object_delete(locker); } /* useful */ /* locker_show_preferences */ static void _preferences_window(Locker * locker); /* callbacks */ static void _preferences_on_cancel(gpointer data); static gboolean _preferences_on_closex(gpointer data); static void _preferences_on_ok(gpointer data); static void _preferences_on_response(GtkWidget * widget, gint response, gpointer data); void locker_show_preferences(Locker * locker, gboolean show) { if(locker->pr_window == NULL) _preferences_window(locker); if(locker->pr_window != NULL) { if(show) gtk_window_present(GTK_WINDOW(locker->pr_window)); else gtk_widget_hide(locker->pr_window); return; } } static void _preferences_window(Locker * locker) { GtkWidget * vbox; GtkWidget * notebook; locker->pr_window = gtk_dialog_new_with_buttons( _("Screensaver preferences"), NULL, 0, GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL, GTK_STOCK_OK, GTK_RESPONSE_OK, NULL); gtk_window_set_default_size(GTK_WINDOW(locker->pr_window), 400, 300); g_signal_connect_swapped(locker->pr_window, "delete-event", G_CALLBACK( _preferences_on_closex), locker); g_signal_connect(locker->pr_window, "response", G_CALLBACK( _preferences_on_response), locker); notebook = gtk_notebook_new(); gtk_notebook_set_scrollable(GTK_NOTEBOOK(notebook), TRUE); /* authentication */ /* FIXME implement */ gtk_notebook_append_page(GTK_NOTEBOOK(notebook), gtk_vbox_new(FALSE, 0), gtk_label_new(_("Authentication"))); /* demos */ /* FIXME implement */ gtk_notebook_append_page(GTK_NOTEBOOK(notebook), gtk_vbox_new(FALSE, 0), gtk_label_new(_("Demos"))); /* plug-ins */ /* FIXME implement */ gtk_notebook_append_page(GTK_NOTEBOOK(notebook), gtk_vbox_new(FALSE, 0), gtk_label_new(_("Plug-ins"))); #if GTK_CHECK_VERSION(2, 14, 0) vbox = gtk_dialog_get_content_area(GTK_DIALOG(locker->pr_window)); #else vbox = GTK_DIALOG(locker->pr_window)->vbox; #endif gtk_box_pack_start(GTK_BOX(vbox), notebook, TRUE, TRUE, 0); _preferences_on_cancel(locker); gtk_widget_show_all(vbox); } static void _preferences_on_cancel(gpointer data) { /* FIXME implement */ } static gboolean _preferences_on_closex(gpointer data) { Locker * locker = data; gtk_widget_hide(locker->pr_window); return TRUE; } static void _preferences_on_ok(gpointer data) { /* FIXME implement */ } static void _preferences_on_response(GtkWidget * widget, gint response, gpointer data) { gtk_widget_hide(widget); if(response == GTK_RESPONSE_OK) _preferences_on_ok(data); else if(response == GTK_RESPONSE_CANCEL) _preferences_on_cancel(data); } /* private */ /* functions */ /* useful */ /* locker_about */ static gboolean _about_on_closex(gpointer data); static void _locker_about(Locker * locker) { GtkWidget * dialog; if(locker->ab_window != NULL) { gtk_window_present(GTK_WINDOW(locker->ab_window)); return; } dialog = desktop_about_dialog_new(); locker->ab_window = dialog; g_signal_connect_swapped(G_OBJECT(dialog), "delete-event", G_CALLBACK( _about_on_closex), locker); desktop_about_dialog_set_name(dialog, PACKAGE); desktop_about_dialog_set_version(dialog, VERSION); desktop_about_dialog_set_authors(dialog, _authors); desktop_about_dialog_set_copyright(dialog, _copyright); desktop_about_dialog_set_logo_icon_name(dialog, "gnome-lockscreen"); desktop_about_dialog_set_license(dialog, _license); desktop_about_dialog_set_translator_credits(dialog, _("translator-credits")); desktop_about_dialog_set_website(dialog, "http://www.defora.org/"); gtk_widget_show(dialog); } static gboolean _about_on_closex(gpointer data) { Locker * locker = data; gtk_widget_hide(locker->ab_window); return TRUE; } /* locker_action */ static void _locker_action(Locker * locker, LockerAction action) { switch(action) { case LOCKER_ACTION_ACTIVATE: _locker_activate(locker); break; case LOCKER_ACTION_LOCK: _locker_lock(locker); break; case LOCKER_ACTION_SHOW_PREFERENCES: locker_show_preferences(locker, TRUE); return; case LOCKER_ACTION_UNLOCK: _locker_unlock(locker); break; } } /* locker_activate */ static void _locker_activate(Locker * locker) { _locker_event(locker, LOCKER_EVENT_ACTIVATING); if(locker->auth->action(locker->auth, LOCKER_ACTION_ACTIVATE) == 0) XActivateScreenSaver(GDK_DISPLAY_XDISPLAY(locker->display)); } /* locker_auth_config_get */ static char const * _locker_auth_config_get(Locker * locker, char const * section, char const * variable) { char const * ret; String * s; if((s = string_new_append("auth::", section, NULL)) == NULL) return NULL; ret = config_get(locker->config, s, variable); string_delete(s); return ret; } /* locker_auth_config_set */ static int _locker_auth_config_set(Locker * locker, char const * section, char const * variable, char const * value) { int ret; String * s; if((s = string_new_append("auth::", section, NULL)) == NULL) return -1; ret = config_set(locker->config, s, variable, value); string_delete(s); return ret; } /* locker_demo_config_get */ static char const * _locker_demo_config_get(Locker * locker, char const * section, char const * variable) { char const * ret; String * s; if((s = string_new_append("demo::", section, NULL)) == NULL) return NULL; ret = config_get(locker->config, s, variable); string_delete(s); return ret; } /* locker_demo_config_set */ static int _locker_demo_config_set(Locker * locker, char const * section, char const * variable, char const * value) { int ret; String * s; if((s = string_new_append("demo::", section, NULL)) == NULL) return -1; ret = config_set(locker->config, s, variable, value); string_delete(s); return ret; } /* locker_error */ static int _locker_error(Locker * locker, char const * message, int ret) { GtkWidget * dialog; if(locker == NULL) { fprintf(stderr, "%s: %s\n", "locker", message); return ret; } dialog = gtk_message_dialog_new(NULL, 0, GTK_MESSAGE_ERROR, GTK_BUTTONS_CLOSE, #if GTK_CHECK_VERSION(2, 6, 0) "%s", _("Error")); gtk_message_dialog_format_secondary_text(GTK_MESSAGE_DIALOG(dialog), #endif "%s", message); gtk_window_set_title(GTK_WINDOW(dialog), _("Error")); gtk_dialog_run(GTK_DIALOG(dialog)); gtk_widget_destroy(dialog); return ret; } /* locker_event */ static void _locker_event(Locker * locker, LockerEvent event) { size_t i; LockerPlugin * lp; for(i = 0; i < locker->plugins_cnt; i++) { lp = locker->plugins[i].plugin; if(lp->event != NULL) lp->event(lp, event); } } /* locker_lock */ static void _locker_lock(Locker * locker) { size_t i; #ifdef DEBUG fprintf(stderr, "DEBUG: %s()\n", __func__); #endif _locker_event(locker, LOCKER_EVENT_LOCKING); for(i = 0; i < locker->windows_cnt; i++) { gtk_widget_show(locker->windows[i]); gtk_window_fullscreen(GTK_WINDOW(locker->windows[i])); } locker->auth->action(locker->auth, LOCKER_ACTION_LOCK); } /* locker_plugin_config_get */ static char const * _locker_plugin_config_get(Locker * locker, char const * section, char const * variable) { char const * ret; String * s; if((s = string_new_append("plugin::", section, NULL)) == NULL) return NULL; ret = config_get(locker->config, s, variable); string_delete(s); return ret; } /* locker_plugin_config_set */ static int _locker_plugin_config_set(Locker * locker, char const * section, char const * variable, char const * value) { int ret; String * s; if((s = string_new_append("plugin::", section, NULL)) == NULL) return -1; ret = config_set(locker->config, s, variable, value); string_delete(s); return ret; } /* locker_unlock */ static void _locker_unlock(Locker * locker) { size_t i; _locker_event(locker, LOCKER_EVENT_UNLOCKING); if(locker->windows == NULL) return; /* ungrab keyboard and mouse */ gdk_keyboard_ungrab(GDK_CURRENT_TIME); gdk_pointer_ungrab(GDK_CURRENT_TIME); for(i = 0; i < locker->windows_cnt; i++) gtk_widget_hide(locker->windows[i]); } /* callbacks */ /* locker_on_closex */ static gboolean _lock_on_closex(void) { return TRUE; } /* locker_on_filter */ static GdkFilterReturn _filter_xscreensaver_notify(Locker * locker, XScreenSaverNotifyEvent * xssne); static GdkFilterReturn _locker_on_filter(GdkXEvent * xevent, GdkEvent * event, gpointer data) { Locker * locker = data; XEvent * xev = xevent; #ifdef DEBUG fprintf(stderr, "DEBUG: %s() 0x%x 0x%x\n", __func__, xev->type, event->type); #endif if(xev->type == locker->event) return _filter_xscreensaver_notify(locker, xevent); else return GDK_FILTER_CONTINUE; } static GdkFilterReturn _filter_xscreensaver_notify(Locker * locker, XScreenSaverNotifyEvent * xssne) { switch(xssne->state) { case ScreenSaverOff: /* FIXME anything to do here? */ break; case ScreenSaverOn: _locker_lock(locker); break; case ScreenSaverDisabled: /* FIXME implement */ break; } return GDK_FILTER_CONTINUE; } /* locker_on_map_event */ static gboolean _locker_on_map_event(gpointer data) { Locker * locker = data; GdkWindow * window; GdkGrabStatus status; /* FIXME detect if this is the first window */ /* FIXME the mouse may already be grabbed (Panel's lock button...) */ /* grab keyboard and mouse */ #if GTK_CHECK_VERSION(2, 14, 0) window = gtk_widget_get_window(locker->windows[0]); #else window = locker->windows[0]->window; #endif if(window == NULL) _locker_error(NULL, "Failed to grab input", 1); else { if((status = gdk_keyboard_grab(window, TRUE, GDK_CURRENT_TIME)) != GDK_GRAB_SUCCESS) _locker_error(NULL, "Failed to grab keyboard", 1); #ifdef DEBUG fprintf(stderr, "DEBUG: keyboard grab status=%u\n", status); #endif if((status = gdk_pointer_grab(window, TRUE, 0, window, NULL, GDK_CURRENT_TIME)) != GDK_GRAB_SUCCESS) _locker_error(NULL, "Failed to grab mouse", 1); #ifdef DEBUG fprintf(stderr, "DEBUG: mouse grab status=%u\n", status); #endif } return FALSE; } /* locker_on_message */ static int _locker_on_message(void * data, uint32_t value1, uint32_t value2, uint32_t value3) { Locker * locker = data; LockerAction action; gboolean show; if(value1 != LOCKER_MESSAGE_ACTION) return 0; switch((action = value2)) { case LOCKER_ACTION_ACTIVATE: _locker_activate(locker); break; case LOCKER_ACTION_LOCK: _locker_lock(locker); break; case LOCKER_ACTION_SHOW_PREFERENCES: show = value3 ? TRUE : FALSE; locker_show_preferences(locker, show); break; case LOCKER_ACTION_UNLOCK: _locker_unlock(locker); break; } return 0; } /* locker_on_realize */ static void _locker_on_realize(GtkWidget * widget, gpointer data) { Locker * locker = data; if(locker->demo != NULL && locker->demo->add != NULL) locker->demo->add(locker->demo, widget); }