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Implement ulock

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This commit is contained in:
Matthias Schiffer 2013-09-19 19:41:24 +02:00
parent 8fac573efc
commit aff9ec19a2
11 changed files with 851 additions and 4 deletions
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37
CMakeLists.txt
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@ -1,12 +1,41 @@
project(ULOCK C)
cmake_minimum_required(VERSION 2.8)
set(CMAKE_MODULE_PATH ${ULOCK_SOURCE_DIR})
find_package(Gettext REQUIRED)
find_package(PAM REQUIRED)
find_package(PkgConfig REQUIRED)
pkg_check_modules(GTK3 REQUIRED gtk+-x11-3.0)
pkg_check_modules(GDK3 REQUIRED gdk-x11-3.0)
pkg_check_modules(X11 REQUIRED x11)
include_directories(${GTK3_INCLUDE_DIRS})
set(CMAKE_THREAD_PREFER_PTHREAD TRUE)
find_package(Threads)
if(NOT CMAKE_USE_PTHREADS_INIT)
MESSAGE(FATAL_ERROR "No pthread support found.")
endif(NOT CMAKE_USE_PTHREADS_INIT)
set(CONFIG_DIR "/etc" CACHE STRING "Path to install ulock's configuration file to")
set(DATA_DIR "share/ulock" CACHE STRING "Path to install ulock's data files to")
include_directories(${ULOCK_BINARY_DIR} ${GTK3_INCLUDE_DIRS} ${GDK3_INCLUDE_DIRS} ${X11_INCLUDE_DIRS} ${PAM_INCLUDE_DIR})
configure_file(${ULOCK_SOURCE_DIR}/config.h.in ${ULOCK_BINARY_DIR}/config.h)
add_executable(ulock ulock.c)
set_property(TARGET ulock PROPERTY COMPILE_FLAGS "-Wall ${GTK3_CFLAGS_OTHER}")
set_property(TARGET ulock PROPERTY LINK_FLAGS "${GTK3_LDFLAGS_OTHER}")
target_link_libraries(ulock ${GTK3_LIBRARIES})
set_property(TARGET ulock PROPERTY COMPILE_FLAGS "-Wall -pthread ${GTK3_CFLAGS_OTHER} ${GDK3_CFLAGS_OTHER} ${X11_CFLAGS_OTHER}")
set_property(TARGET ulock PROPERTY LINK_FLAGS "-pthread ${GTK3_LDFLAGS_OTHER} ${GDK3_LDFLAGS_OTHER} ${X11_LDFLAGS_OTHER}")
target_link_libraries(ulock ${GTK3_LIBRARIES} ${GDK3_LIBRARIES} ${X11_LIBRARIES} ${PAM_LIBRARY})
GETTEXT_PROCESS_PO_FILES(de ALL PO_FILES po/de.po)
install(TARGETS ulock RUNTIME DESTINATION bin)
install(DIRECTORY data/ DESTINATION ${DATA_DIR})
install(FILES etc/ulock.conf DESTINATION ${CONFIG_DIR})
install(FILES ${ULOCK_BINARY_DIR}/de.gmo DESTINATION share/locale/de/LC_MESSAGES RENAME ulock.mo)

16
FindPAM.cmake Normal file
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FIND_PATH(PAM_INCLUDE_DIR security/pam_appl.h)
FIND_LIBRARY(PAM_LIBRARY NAMES pam)
IF (PAM_INCLUDE_DIR AND PAM_LIBRARY)
SET(PAM_FOUND TRUE)
ENDIF (PAM_INCLUDE_DIR AND PAM_LIBRARY)
IF (PAM_FOUND)
IF (NOT PAM_FIND_QUIETLY)
MESSAGE(STATUS "Found PAM: ${PAM_LIBRARY}; include path: ${PAM_INCLUDE_DIR}")
ENDIF (NOT PAM_FIND_QUIETLY)
ELSE (PAM_FOUND)
IF (PAM_FIND_REQUIRED)
MESSAGE(FATAL_ERROR "Could not find PAM")
ENDIF (PAM_FIND_REQUIRED)
ENDIF (PAM_FOUND)

8
config.h.in Normal file
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#ifndef _ULOCK_CONFIG_H_
#define _ULOCK_CONFIG_H_
#define CONFIG_FILE "@CONFIG_DIR@/ulock.conf"
#define PREFIX "@CMAKE_INSTALL_PREFIX@"
#define DATA_DIR "@CMAKE_INSTALL_PREFIX@/@DATA_DIR@"
#endif /* _ULOCK_CONFIG_H_ */

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166
data/unlock.ui Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<interface>
<requires lib="gtk+" version="2.24"/>
<object class="GtkNotebook" id="unlock_window">
<property name="width_request">700</property>
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="halign">center</property>
<property name="valign">center</property>
<property name="show_tabs">False</property>
<child>
<object class="GtkHBox" id="box1">
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="spacing">40</property>
<child>
<object class="GtkImage" id="image1">
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="pixbuf">siegel.png</property>
</object>
<packing>
<property name="expand">False</property>
<property name="fill">True</property>
<property name="position">0</property>
</packing>
</child>
<child>
<object class="GtkVBox" id="vbox2">
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="border_width">12</property>
<property name="spacing">12</property>
<child>
<object class="GtkLabel" id="lock_label">
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="label" comments="This is a placeholder string and will be replaced with the hostname of the system">[lock]</property>
</object>
<packing>
<property name="expand">True</property>
<property name="fill">True</property>
<property name="position">1</property>
</packing>
</child>
<child>
<object class="GtkVBox" id="login_box">
<property name="can_focus">False</property>
<property name="spacing">6</property>
<child>
<object class="GtkHBox" id="prompt_box">
<property name="can_focus">False</property>
<property name="spacing">6</property>
<child>
<object class="GtkLabel" id="prompt_label">
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="label" translatable="yes">Password:</property>
</object>
<packing>
<property name="expand">False</property>
<property name="fill">True</property>
<property name="position">0</property>
</packing>
</child>
<child>
<object class="GtkEntry" id="prompt_entry">
<property name="visible">True</property>
<property name="can_focus">True</property>
<property name="visibility">False</property>
<property name="invisible_char">•</property>
<property name="invisible_char_set">True</property>
<property name="primary_icon_activatable">False</property>
<property name="secondary_icon_activatable">False</property>
<signal name="activate" handler="login_cb" swapped="no"/>
</object>
<packing>
<property name="expand">True</property>
<property name="fill">True</property>
<property name="position">1</property>
</packing>
</child>
</object>
<packing>
<property name="expand">True</property>
<property name="fill">True</property>
<property name="position">0</property>
</packing>
</child>
<child>
<object class="GtkLabel" id="message_label">
<property name="can_focus">False</property>
<property name="yalign">0</property>
<property name="label" comments="This is a placeholder string and will be replaced with a message from PAM">[message]</property>
</object>
<packing>
<property name="expand">True</property>
<property name="fill">True</property>
<property name="position">1</property>
</packing>
</child>
<child>
<object class="GtkHBox" id="hbox2">
<property name="visible">True</property>
<property name="can_focus">False</property>
<property name="spacing">20</property>
<child>
<object class="GtkButton" id="unlock_button">
<property name="label" translatable="yes">Unlock</property>
<property name="use_action_appearance">False</property>
<property name="visible">True</property>
<property name="can_focus">True</property>
<property name="receives_default">True</property>
<property name="use_action_appearance">False</property>
</object>
<packing>
<property name="expand">True</property>
<property name="fill">True</property>
<property name="pack_type">end</property>
<property name="position">1</property>
</packing>
</child>
<child>
<object class="GtkButton" id="logout_button">
<property name="label" translatable="yes">Logout</property>
<property name="use_action_appearance">False</property>
<property name="visible">True</property>
<property name="can_focus">True</property>
<property name="receives_default">True</property>
<property name="use_action_appearance">False</property>
</object>
<packing>
<property name="expand">True</property>
<property name="fill">True</property>
<property name="pack_type">end</property>
<property name="position">2</property>
</packing>
</child>
</object>
<packing>
<property name="expand">True</property>
<property name="fill">True</property>
<property name="position">2</property>
</packing>
</child>
</object>
<packing>
<property name="expand">False</property>
<property name="fill">True</property>
<property name="position">3</property>
</packing>
</child>
</object>
<packing>
<property name="expand">False</property>
<property name="fill">True</property>
<property name="position">1</property>
</packing>
</child>
</object>
</child>
<child type="tab">
<placeholder/>
</child>
</object>
</interface>

4
etc/ulock.conf Normal file
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[ulock]
#theme=Adwaita
#logout_timeout=600
#logout_command=xfce4-session-logout -l

3
po/POTFILES.in Normal file
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[encoding: UTF-8]
pylock.c
[type: gettext/glade]data/unlock.ui

49
po/de.po Normal file
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# ulock german translation
# Copyright (C) 2013 Matthias Schiffer
# This file is distributed under the same license as the ulock package.
# Matthias Schiffer <mschiffer@universe-factory.net>, 2013.
#
msgid ""
msgstr ""
"Project-Id-Version: pylock 0.1\n"
"Report-Msgid-Bugs-To: \n"
"POT-Creation-Date: 2013-09-19 18:53+0200\n"
"PO-Revision-Date: 2012-02-01 19:30+0100\n"
"Last-Translator: Matthias Schiffer <mschiffer@universe-factory.net>\n"
"Language-Team: German <de@li.org>\n"
"Language: de\n"
"MIME-Version: 1.0\n"
"Content-Type: text/plain; charset=UTF-8\n"
"Content-Transfer-Encoding: 8bit\n"
#: data/unlock.ui:125
msgid "Logout"
msgstr "Ausloggen"
#: data/unlock.ui:58
msgid "Password:"
msgstr "Passwort:"
#: ulock.c:88
msgid "This computer is currently locked by the user <i>%s</i>."
msgstr "Dieser Computer ist zur Zeit vom Benutzer <i>%s</i> gesperrt."
#: ulock.c:92
msgid ""
"This computer is currently locked by the user <i>%s</i>.\n"
"The user can be logged out in %02u:%02u minutes."
msgstr ""
"Dieser Computer ist zur Zeit vom Benutzer <i>%s</i> gesperrt.\n"
"Der Benutzer kann in %02u:%02u Minuten ausgeloggt werden."
#: ulock.c:98
msgid ""
"This computer is currently locked by the user <i>%s</i>.\n"
"The user can be logged out now."
msgstr ""
"Dieser Computer ist zur Zeit vom Benutzer <i>%s</i> gesperrt.\n"
"Der Benutzer kann jetzt ausgeloggt werden."
#: data/unlock.ui:109
msgid "Unlock"
msgstr "Entsperren"

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# SOME DESCRIPTIVE TITLE.
# Copyright (C) YEAR THE PACKAGE'S COPYRIGHT HOLDER
# This file is distributed under the same license as the PACKAGE package.
# FIRST AUTHOR <EMAIL@ADDRESS>, YEAR.
#
#, fuzzy
msgid ""
msgstr ""
"Project-Id-Version: PACKAGE VERSION\n"
"Report-Msgid-Bugs-To: \n"
"POT-Creation-Date: 2013-09-19 18:53+0200\n"
"PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
"Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
"Language-Team: LANGUAGE <LL@li.org>\n"
"Language: \n"
"MIME-Version: 1.0\n"
"Content-Type: text/plain; charset=CHARSET\n"
"Content-Transfer-Encoding: 8bit\n"
#: ulock.c:88
#, c-format
msgid "This computer is currently locked by the user <i>%s</i>."
msgstr ""
#: ulock.c:92
#, c-format
msgid ""
"This computer is currently locked by the user <i>%s</i>.\n"
"The user can be logged out in %02u:%02u minutes."
msgstr ""
#: ulock.c:98
#, c-format
msgid ""
"This computer is currently locked by the user <i>%s</i>.\n"
"The user can be logged out now."
msgstr ""
#: data/unlock.ui:58
msgid "Password:"
msgstr ""
#: data/unlock.ui:109
msgid "Unlock"
msgstr ""
#: data/unlock.ui:125
msgid "Logout"
msgstr ""

315
ulock.c
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#include <config.h>
#include <sys/types.h>
#include <locale.h>
#include <libintl.h>
#include <pthread.h>
#include <pwd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <syslog.h>
#include <unistd.h>
#include <security/pam_appl.h>
#include <gdk/gdk.h>
#include <gdk/gdkx.h>
#include <gtk/gtk.h>
#include <X11/Xlib.h>
#define _(s) gettext(s)
#define DEBUG(args...) syslog(LOG_NOTICE, args)
enum lock_state {
LOCKED, UNLOCKING, LOGOUT
};
static enum lock_state state = LOCKED;
static GtkWidget *window, *unlockWindow, *lockLabel, *promptEntry, *messageLabel, *logoutButton, *unlockButton;
static gboolean enablePromptEntry = TRUE, enableLogoutButton = FALSE, enableUnlockButton = TRUE;
static char *username;
static char *logoutCommand = NULL;
static int logoutTime = 0;
static gboolean do_grab_devices(gpointer user_data) {
DEBUG("do_grab_devices");
gtk_window_present(GTK_WINDOW(window));
GdkDeviceManager *deviceManager = gdk_display_get_device_manager(gdk_display_get_default());
GList *devices = gdk_device_manager_list_devices(deviceManager, GDK_DEVICE_TYPE_MASTER);
gboolean error = FALSE;
for (; devices; devices = g_list_next(devices)) {
GdkDevice *device = devices->data;
if (gdk_device_grab(device, gtk_widget_get_window(window), GDK_OWNERSHIP_APPLICATION, TRUE, GDK_ALL_EVENTS_MASK, NULL, GDK_CURRENT_TIME) != GDK_GRAB_SUCCESS)
error = TRUE;
}
g_list_free(devices);
return error;
}
static void grab_devices(void) {
if (do_grab_devices(NULL))
g_timeout_add_seconds(1, do_grab_devices, NULL);
}
static void update(void) {
gboolean locked = (state == LOCKED);
gtk_widget_set_sensitive(promptEntry, enablePromptEntry && locked);
gtk_widget_set_sensitive(logoutButton, enableLogoutButton && locked);
gtk_widget_set_sensitive(unlockButton, enableUnlockButton && locked);
}
static gboolean do_update_logout_time(gpointer user_data) {
gboolean ret = FALSE;
char *escaped_username = g_markup_escape_text(username, -1);
char *message;
if (!logoutCommand) {
message = g_strdup_printf(_("This computer is currently locked by the user <i>%s</i>."), escaped_username);
enableLogoutButton = FALSE;
}
else if (logoutTime > 0) {
message = g_strdup_printf(_("This computer is currently locked by the user <i>%s</i>.\nThe user can be logged out in %02u:%02u minutes."), escaped_username, logoutTime/60, logoutTime%60);
enableLogoutButton = FALSE;
ret = TRUE;
logoutTime--;
}
else {
message = g_strdup_printf(_("This computer is currently locked by the user <i>%s</i>.\nThe user can be logged out now."), escaped_username);
enableLogoutButton = TRUE;
}
gtk_label_set_markup(GTK_LABEL(lockLabel), message);
g_free(message);
update();
return ret;
}
static void update_logout_time() {
if (do_update_logout_time(NULL))
g_timeout_add_seconds(1, do_update_logout_time, NULL);
}
static void lock(void) {
if (state != LOCKED)
return;
DEBUG("lock");
update();
grab_devices();
gtk_widget_grab_focus(promptEntry);
}
static int ulock_conv(int num_msg, const struct pam_message **msg, struct pam_response **resp, void *appdata_ptr) {
char *password = appdata_ptr;
*resp = calloc(num_msg, sizeof(struct pam_response));
int i;
for (i = 0; i < num_msg; i++) {
if (msg[i]->msg_style == PAM_PROMPT_ECHO_OFF)
resp[i]->resp = strdup(password);
}
return 0;
}
static gboolean try_unlock_return(gpointer message) {
DEBUG("try_unlock_return");
if (message) {
state = LOCKED;
gtk_entry_set_text(GTK_ENTRY(promptEntry), "");
gtk_label_set_label(GTK_LABEL(messageLabel), message);
lock();
}
else {
gtk_main_quit();
}
return FALSE;
}
/* this thread must not access any GTK resources */
static void* try_unlock_thread(void *arg) {
const struct pam_conv conv = {.conv = ulock_conv, .appdata_ptr = arg};
pam_handle_t *handle = NULL;
int ret = pam_start("login", username, &conv, &handle);
if (!ret)
ret = pam_authenticate(handle, 0);
const char *message = NULL;
if (ret)
message = pam_strerror(handle, ret);
pam_end(handle, ret);
g_idle_add(try_unlock_return, (gpointer)message);
free(arg);
return NULL;
}
static void try_unlock(void) {
if (state != LOCKED)
return;
DEBUG("try_unlock");
state = UNLOCKING;
update();
gtk_label_set_label(GTK_LABEL(messageLabel), "");
pthread_t thread;
pthread_create(&thread, NULL, try_unlock_thread, strdup((char*)gtk_entry_get_text(GTK_ENTRY(promptEntry))));
pthread_detach(thread);
}
static void logout(void) {
if (state != LOCKED)
return;
if (!logoutCommand)
return;
if (logoutTime > 0)
return;
DEBUG("logout");
state = LOGOUT;
update();
system(logoutCommand);
}
static GdkFilterReturn xevent_filter(GdkXEvent *xevent, GdkEvent *event, gpointer data) {
XEvent *ev = xevent;
switch (ev->xany.type) {
case MapNotify:
case ConfigureNotify:
if (ev->xany.window != gdk_x11_window_get_xid(gtk_widget_get_window(window)))
gtk_window_present(GTK_WINDOW(window));
break;
default:
break;
}
return GDK_FILTER_CONTINUE;
}
static void create_lock_window(void) {
window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
gtk_window_set_decorated(GTK_WINDOW(window), FALSE);
gtk_window_set_skip_taskbar_hint(GTK_WINDOW(window), TRUE);
gtk_window_set_skip_pager_hint(GTK_WINDOW(window), TRUE);
gtk_window_set_keep_above(GTK_WINDOW(window), TRUE);
gtk_window_fullscreen(GTK_WINDOW(window));
GtkWidget *overlay = gtk_overlay_new();
gtk_container_add(GTK_CONTAINER(window), overlay);
GtkWidget *bg = gtk_image_new_from_file(DATA_DIR "/bg.svg");
gtk_container_add(GTK_CONTAINER(overlay), bg);
GtkBuilder *builder = gtk_builder_new();
if (!gtk_builder_add_from_file(builder, DATA_DIR "/unlock.ui", NULL))
exit(1);
unlockWindow = GTK_WIDGET(gtk_builder_get_object(builder, "unlock_window"));
lockLabel = GTK_WIDGET(gtk_builder_get_object(builder, "lock_label"));
promptEntry = GTK_WIDGET(gtk_builder_get_object(builder, "prompt_entry"));
messageLabel = GTK_WIDGET(gtk_builder_get_object(builder, "message_label"));
logoutButton = GTK_WIDGET(gtk_builder_get_object(builder, "logout_button"));
unlockButton = GTK_WIDGET(gtk_builder_get_object(builder, "unlock_button"));
gtk_overlay_add_overlay(GTK_OVERLAY(overlay), unlockWindow);
gtk_widget_show_all(overlay);
gtk_entry_set_text(GTK_ENTRY(promptEntry), "");
gtk_label_set_label(GTK_LABEL(messageLabel), "");
g_signal_connect(promptEntry, "activate", G_CALLBACK(try_unlock), NULL);
g_signal_connect(unlockButton, "clicked", G_CALLBACK(try_unlock), NULL);
g_signal_connect(logoutButton, "clicked", G_CALLBACK(logout), NULL);
g_signal_connect(window, "map-event", G_CALLBACK(lock), NULL);
g_signal_connect(window, "delete-event", G_CALLBACK(gtk_true), NULL);
XSelectInput(gdk_x11_get_default_xdisplay(), gdk_x11_get_default_root_xwindow(), SubstructureNotifyMask);
gdk_window_add_filter(NULL, (GdkFilterFunc)xevent_filter, NULL);
update_logout_time();
}
static void get_username(void) {
struct passwd *passwd = getpwuid(getuid());
if (!passwd)
exit(2);
username = strdup(passwd->pw_name);
}
static void load_config(void) {
GKeyFile *keyFile = g_key_file_new();
if (!g_key_file_load_from_file(keyFile, CONFIG_FILE, G_KEY_FILE_NONE, NULL))
return;
gchar *theme = g_key_file_get_string(keyFile, "ulock", "theme", NULL);
if (theme)
gtk_settings_set_string_property(gtk_settings_get_default(), "gtk-theme-name", theme, "ulock");
logoutTime = g_key_file_get_integer(keyFile, "ulock", "logout_timeout", NULL);
gchar *logoutCommandConfig = g_key_file_get_string(keyFile, "ulock", "logout_string", NULL);
if (logoutCommandConfig)
logoutCommand = strdup(logoutCommandConfig);
g_key_file_free(keyFile);
}
int main(int argc, char *argv[]) {
get_username();
logoutCommand = strdup("echo foo");
setlocale(LC_ALL, "");
bindtextdomain("ulock", PREFIX "/share/locale");
textdomain("ulock");
openlog("ulock", LOG_PID, LOG_DAEMON);
gtk_init(&argc, &argv);
load_config();
create_lock_window();
gtk_widget_show(window);
gtk_main();
return 0;
}