[gdm/multi-stack: 13/20] Add smartcard plugin



commit fc98f45d8033e0a299254d7da279f7dcd37cc096
Author: Ray Strode <rstrode redhat com>
Date:   Fri Feb 6 16:25:47 2009 -0500

    Add smartcard plugin
    
    This commit adds a plugin to initiate a conversation when
    smartcards are inserted.

 configure.ac                                       |   11 +
 gui/simple-greeter/plugins/Makefile.am             |    2 +-
 gui/simple-greeter/plugins/smartcard/Makefile.am   |   76 +
 .../plugins/smartcard/gdm-smartcard-extension.c    |  513 +++++++
 .../plugins/smartcard/gdm-smartcard-extension.h    |   56 +
 .../plugins/smartcard/gdm-smartcard-manager.c      | 1521 ++++++++++++++++++++
 .../plugins/smartcard/gdm-smartcard-manager.h      |   86 ++
 .../plugins/smartcard/gdm-smartcard-worker.c       |  186 +++
 .../plugins/smartcard/gdm-smartcard.c              |  554 +++++++
 .../plugins/smartcard/gdm-smartcard.h              |   94 ++
 .../plugins/smartcard/gdm-smartcard.pam            |   18 +
 .../plugins/smartcard/icons/16x16/Makefile.am      |    5 +
 .../smartcard/icons/16x16/gdm-smartcard.png        |  Bin 0 -> 871 bytes
 .../plugins/smartcard/icons/48x48/Makefile.am      |    5 +
 .../smartcard/icons/48x48/gdm-smartcard.png        |  Bin 0 -> 4202 bytes
 .../plugins/smartcard/icons/Makefile.am            |    1 +
 gui/simple-greeter/plugins/smartcard/page.ui       |   57 +
 gui/simple-greeter/plugins/smartcard/plugin.c      |   40 +
 po/POTFILES.in                                     |    3 +
 19 files changed, 3227 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index c7bfdb9..6f7000a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -68,6 +68,7 @@ LIBCANBERRA_GTK_REQUIRED_VERSION=0.4
 FONTCONFIG_REQUIRED_VERSION=2.5.0
 UPOWER_REQUIRED_VERSION=0.9.0
 ACCOUNTS_SERVICE_REQUIRED_VERSION=0.6.5
+NSS_REQUIRED_VERSION=3.11.1
 
 EXTRA_COMPILE_WARNINGS(yes)
 
@@ -92,6 +93,12 @@ PKG_CHECK_MODULES(DAEMON,
 AC_SUBST(DAEMON_CFLAGS)
 AC_SUBST(DAEMON_LIBS)
 
+PKG_CHECK_MODULES(NSS,
+        nss >= $NSS_REQUIRED_VERSION
+)
+AC_SUBST(NSS_CFLAGS)
+AC_SUBST(NSS_LIBS)
+
 PKG_CHECK_MODULES(XLIB, x11 xau, ,
   [AC_PATH_XTRA
     if test "x$no_x" = xyes; then
@@ -1444,6 +1451,10 @@ gui/simple-greeter/plugins/fingerprint/Makefile
 gui/simple-greeter/plugins/fingerprint/icons/Makefile
 gui/simple-greeter/plugins/fingerprint/icons/16x16/Makefile
 gui/simple-greeter/plugins/fingerprint/icons/48x48/Makefile
+gui/simple-greeter/plugins/smartcard/Makefile
+gui/simple-greeter/plugins/smartcard/icons/Makefile
+gui/simple-greeter/plugins/smartcard/icons/16x16/Makefile
+gui/simple-greeter/plugins/smartcard/icons/48x48/Makefile
 gui/simple-chooser/Makefile
 utils/Makefile
 data/gdm.conf
diff --git a/gui/simple-greeter/plugins/Makefile.am b/gui/simple-greeter/plugins/Makefile.am
index 9811a68..3dd336f 100644
--- a/gui/simple-greeter/plugins/Makefile.am
+++ b/gui/simple-greeter/plugins/Makefile.am
@@ -1 +1 @@
-SUBDIRS = password fingerprint
+SUBDIRS = password fingerprint smartcard
diff --git a/gui/simple-greeter/plugins/smartcard/Makefile.am b/gui/simple-greeter/plugins/smartcard/Makefile.am
new file mode 100644
index 0000000..e43e424
--- /dev/null
+++ b/gui/simple-greeter/plugins/smartcard/Makefile.am
@@ -0,0 +1,76 @@
+SUBDIRS = icons
+
+NULL =
+PAM_SERVICE_NAME = gdm-smartcard
+
+extensiondir = $(extensionsdatadir)/smartcard
+extension_DATA = page.ui
+
+AM_CPPFLAGS = \
+	-I$(top_srcdir)/common				\
+	-I$(top_srcdir)/gui/simple-greeter/libgdmsimplegreeter	\
+	-DDMCONFDIR=\""$(dmconfdir)"\"			\
+	-DGDMCONFDIR=\"$(gdmconfdir)\"                  \
+	-DPLUGINDATADIR=\""$(extensiondir)"\"		\
+	-DPAMSERVICENAME=\""$(pam_DATA)"\"	\
+	-DSYSCONFDIR=\""$(sysconfdir)"\"		\
+	-DLIBLOCALEDIR=\""$(prefix)/lib/locale"\"	\
+	-DGNOMELOCALEDIR=\""$(datadir)/locale"\" 	\
+	-DLIBEXECDIR=\""$(libexecdir)"\" 		\
+	-DLIBDIR=\""$(libdir)"\"			\
+	-DSBINDIR=\""$(sbindir)"\"		 	\
+	$(DISABLE_DEPRECATED_CFLAGS)	\
+	$(GTK_CFLAGS)					\
+	$(SIMPLE_GREETER_CFLAGS)			\
+	$(POLKIT_GNOME_CFLAGS)				\
+	$(NULL)
+
+plugindir = $(GDM_SIMPLE_GREETER_PLUGINS_DIR)
+plugin_LTLIBRARIES = smartcard.la
+
+smartcard_la_CFLAGS =			\
+	$(SIMPLE_GREETER_CFLAGS)	\
+	$(NULL)
+
+libexec_PROGRAMS = 			\
+	gdm-smartcard-worker		\
+	$(NULL)
+
+
+smartcard_la_LDFLAGS = -module -avoid-version -export-dynamic
+smartcard_la_LIBADD = ../../../../common/libgdmcommon.la \
+			../../libgdmsimplegreeter/libgdmsimplegreeter.la
+smartcard_la_SOURCES =				\
+			gdm-smartcard-extension.h	\
+			gdm-smartcard-extension.c	\
+			plugin.c
+
+gdm_smartcard_worker_LDADD = ../../../../common/libgdmcommon.la \
+				$(DAEMON_LIBS)		\
+				$(GTHREAD_LIBS)		\
+				$(NSS_LIBS)		\
+				$(NULL)
+gdm_smartcard_worker_CFLAGS =	$(DAEMON_CFLAGS)	\
+				$(NSS_CFLAGS)		\
+				$(NULL)
+gdm_smartcard_worker_SOURCES =				\
+				gdm-smartcard.h		\
+				gdm-smartcard.c		\
+				gdm-smartcard-manager.h	\
+				gdm-smartcard-manager.c	\
+				gdm-smartcard-worker.c	\
+				$(NULL)
+
+$(PAM_SERVICE_NAME): $(PAM_SERVICE_NAME).pam
+	cp $(PAM_SERVICE_NAME).pam $(PAM_SERVICE_NAME)
+
+pamdir = $(PAM_PREFIX)/pam.d
+pam_DATA = $(PAM_SERVICE_NAME)
+
+EXTRA_DIST = $(extension_DATA) $(PAM_SERVICE_NAME).pam
+CLEANFILES = $(PAM_SERVICE_NAME)
+
+MAINTAINERCLEANFILES =                  \
+        *~                              \
+        $(PAM_SERVICE_NAME)             \
+        Makefile.in
diff --git a/gui/simple-greeter/plugins/smartcard/gdm-smartcard-extension.c b/gui/simple-greeter/plugins/smartcard/gdm-smartcard-extension.c
new file mode 100644
index 0000000..b40a21c
--- /dev/null
+++ b/gui/simple-greeter/plugins/smartcard/gdm-smartcard-extension.c
@@ -0,0 +1,513 @@
+/*
+ * Copyright (C) 2009 Red Hat, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * Written By: Ray Strode <rstrode redhat com>
+ *
+ */
+
+#include <config.h>
+#include "gdm-smartcard-extension.h"
+#include "gdm-conversation.h"
+#include "gdm-task.h"
+
+#include <errno.h>
+#include <fcntl.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include <glib/gi18n-lib.h>
+#include <gio/gio.h>
+#include <gtk/gtk.h>
+
+#ifndef GDM_SMARTCARD_WORKER_COMMAND
+#define GDM_SMARTCARD_WORKER_COMMAND LIBEXECDIR "/gdm-smartcard-worker"
+#endif
+
+struct _GdmSmartcardExtensionPrivate
+{
+        GIcon     *icon;
+        GtkWidget *page;
+        GtkActionGroup *actions;
+        GtkAction  *login_action;
+
+        GtkWidget *message_label;
+        GtkWidget *prompt_label;
+        GtkWidget *prompt_entry;
+
+        GPid       worker_pid;
+        int        number_of_tokens;
+
+        guint      answer_pending : 1;
+        guint      select_when_ready : 1;
+};
+
+static void gdm_smartcard_extension_finalize (GObject *object);
+
+static void gdm_task_iface_init (GdmTaskIface *iface);
+static void gdm_conversation_iface_init (GdmConversationIface *iface);
+static void gdm_greeter_extension_iface_init (GdmGreeterExtensionIface *iface);
+
+G_DEFINE_TYPE_WITH_CODE (GdmSmartcardExtension,
+                         gdm_smartcard_extension,
+                         G_TYPE_OBJECT,
+                         G_IMPLEMENT_INTERFACE (GDM_TYPE_GREETER_EXTENSION,
+                                                gdm_greeter_extension_iface_init)
+                         G_IMPLEMENT_INTERFACE (GDM_TYPE_TASK,
+                                                gdm_task_iface_init)
+                         G_IMPLEMENT_INTERFACE (GDM_TYPE_CONVERSATION,
+                                                gdm_conversation_iface_init));
+
+static gboolean
+on_smartcard_event (GIOChannel   *io_channel,
+                    GIOCondition  condition,
+                    gpointer      data)
+{
+        GdmSmartcardExtension *extension;
+
+        extension = GDM_SMARTCARD_EXTENSION (data);
+
+        if (condition & G_IO_IN) {
+                char buffer[1024];
+                ssize_t num_bytes;
+
+                num_bytes = read (g_io_channel_unix_get_fd (io_channel),
+                                  buffer, sizeof (buffer));
+
+                if (num_bytes < 0 && errno != EINTR)
+                        return FALSE;
+
+                if (num_bytes != 1) {
+                        g_debug ("buffer: %s\n", buffer);
+                        return TRUE;
+                }
+
+                if (buffer[0] == 'I') {
+                        extension->priv->number_of_tokens++;
+                } else {
+                        extension->priv->number_of_tokens--;
+                }
+
+                if (extension->priv->number_of_tokens == 1) {
+                        if (!gdm_conversation_choose_user (GDM_CONVERSATION (extension),
+                                                          PAMSERVICENAME)) {
+                                g_debug ("could not choose smart card user, cancelling...");
+                                gdm_conversation_cancel (GDM_CONVERSATION (extension));
+                                extension->priv->select_when_ready = TRUE;
+                        } else {
+                                g_debug ("chose smart card user!");
+                        }
+                } else if (extension->priv->number_of_tokens == 0) {
+                        gdm_conversation_cancel (GDM_CONVERSATION (extension));
+                }
+
+                return TRUE;
+        }
+
+        if (condition & G_IO_HUP) {
+                return FALSE;
+        }
+
+        return TRUE;
+}
+
+static void
+watch_for_smartcards (GdmSmartcardExtension *extension)
+{
+        GError *error;
+        GIOChannel *io_channel;
+        char *args[] = { GDM_SMARTCARD_WORKER_COMMAND, NULL };
+        GPid pid;
+        int stdout_fd;
+
+        error = NULL;
+
+        if (!g_spawn_async_with_pipes (NULL, args, NULL, 0,
+                                       NULL, NULL, &pid, NULL,
+                                       &stdout_fd, NULL, &error)) {
+                g_debug ("could not start smart card manager: %s", error->message);
+                g_error_free (error);
+                return;
+        }
+        fcntl (stdout_fd, F_SETFD, FD_CLOEXEC);
+
+        io_channel = g_io_channel_unix_new (stdout_fd);
+        g_io_channel_set_flags (io_channel, G_IO_FLAG_NONBLOCK, NULL);
+        g_io_channel_set_encoding (io_channel, NULL, NULL);
+        g_io_channel_set_buffered (io_channel, FALSE);
+        g_io_add_watch (io_channel, G_IO_IN, on_smartcard_event, extension);
+        g_io_channel_set_close_on_unref (io_channel, TRUE);
+        g_io_channel_unref (io_channel);
+
+        extension->priv->worker_pid = pid;
+}
+
+static void
+stop_watching_for_smartcards (GdmSmartcardExtension *extension)
+{
+        kill (extension->priv->worker_pid, SIGTERM);
+}
+
+static void
+gdm_smartcard_extension_set_message (GdmConversation *conversation,
+                                     const char      *message)
+{
+        GdmSmartcardExtension *extension = GDM_SMARTCARD_EXTENSION (conversation);
+        gtk_widget_show (extension->priv->message_label);
+        gtk_label_set_text (GTK_LABEL (extension->priv->message_label), message);
+}
+
+static void
+gdm_smartcard_extension_ask_question (GdmConversation *conversation,
+                                      const char      *message)
+{
+        GdmSmartcardExtension *extension = GDM_SMARTCARD_EXTENSION (conversation);
+        gtk_widget_show (extension->priv->prompt_label);
+        gtk_label_set_text (GTK_LABEL (extension->priv->prompt_label), message);
+        gtk_entry_set_text (GTK_ENTRY (extension->priv->prompt_entry), "");
+        gtk_entry_set_visibility (GTK_ENTRY (extension->priv->prompt_entry), TRUE);
+        gtk_widget_show (extension->priv->prompt_entry);
+        gtk_action_set_visible (extension->priv->login_action, TRUE);
+        gtk_action_set_sensitive (extension->priv->login_action, TRUE);
+        gtk_widget_grab_focus (extension->priv->prompt_entry);
+        extension->priv->answer_pending = TRUE;
+}
+
+static void
+gdm_smartcard_extension_ask_secret (GdmConversation *conversation,
+                                    const char      *message)
+{
+        GdmSmartcardExtension *extension = GDM_SMARTCARD_EXTENSION (conversation);
+        gtk_widget_show (extension->priv->prompt_label);
+        gtk_label_set_text (GTK_LABEL (extension->priv->prompt_label), message);
+        gtk_entry_set_visibility (GTK_ENTRY (extension->priv->prompt_entry), FALSE);
+        gtk_entry_set_text (GTK_ENTRY (extension->priv->prompt_entry), "");
+        gtk_widget_show (extension->priv->prompt_entry);
+        gtk_widget_grab_focus (extension->priv->prompt_entry);
+        gtk_action_set_visible (extension->priv->login_action, TRUE);
+        gtk_action_set_sensitive (extension->priv->login_action, TRUE);
+        extension->priv->answer_pending = TRUE;
+}
+
+static void
+gdm_smartcard_extension_reset (GdmConversation *conversation)
+{
+        GdmSmartcardExtension *extension = GDM_SMARTCARD_EXTENSION (conversation);
+        gtk_widget_hide (extension->priv->prompt_label);
+        gtk_label_set_text (GTK_LABEL (extension->priv->prompt_label), "");
+
+        gtk_widget_hide (extension->priv->prompt_entry);
+        gtk_entry_set_text (GTK_ENTRY (extension->priv->prompt_entry), "");
+        gtk_entry_set_visibility (GTK_ENTRY (extension->priv->prompt_entry), TRUE);
+        gtk_action_set_visible (extension->priv->login_action, FALSE);
+        extension->priv->answer_pending = FALSE;
+
+        gdm_task_set_enabled (GDM_TASK (conversation), FALSE);
+}
+
+static void
+gdm_smartcard_extension_set_ready (GdmConversation *conversation)
+{
+        GdmSmartcardExtension *extension = GDM_SMARTCARD_EXTENSION (conversation);
+        gdm_task_set_enabled (GDM_TASK (conversation), TRUE);
+
+        if (extension->priv->worker_pid <= 0) {
+                watch_for_smartcards (extension);
+        }
+
+        if (extension->priv->select_when_ready) {
+                if (gdm_conversation_choose_user (GDM_CONVERSATION (extension),
+                                                  PAMSERVICENAME)) {
+                        extension->priv->select_when_ready = FALSE;
+                }
+        }
+}
+
+char *
+gdm_smartcard_extension_get_service_name (GdmConversation *conversation)
+{
+        return g_strdup (PAMSERVICENAME);
+}
+
+GtkWidget *
+gdm_smartcard_extension_get_page (GdmConversation *conversation)
+{
+        GdmSmartcardExtension *extension = GDM_SMARTCARD_EXTENSION (conversation);
+        return extension->priv->page;
+}
+
+GtkActionGroup *
+gdm_smartcard_extension_get_actions (GdmConversation *conversation)
+{
+        GdmSmartcardExtension *extension = GDM_SMARTCARD_EXTENSION (conversation);
+
+        return g_object_ref (extension->priv->actions);
+}
+
+void
+gdm_smartcard_extension_request_answer (GdmConversation *conversation)
+{
+        GdmSmartcardExtension *extension = GDM_SMARTCARD_EXTENSION (conversation);
+        const char *text;
+
+        if (!extension->priv->answer_pending) {
+                gdm_conversation_answer (conversation, NULL);
+                return;
+        }
+
+        extension->priv->answer_pending = FALSE;
+        text = gtk_entry_get_text (GTK_ENTRY (extension->priv->prompt_entry));
+        gdm_conversation_answer (conversation, text);
+
+        gtk_widget_hide (extension->priv->prompt_entry);
+        gtk_label_set_text (GTK_LABEL (extension->priv->prompt_label), "");
+        gtk_entry_set_text (GTK_ENTRY (extension->priv->prompt_entry), "");
+        gtk_action_set_visible (extension->priv->login_action, FALSE);
+}
+
+gboolean
+gdm_smartcard_extension_focus (GdmConversation *conversation)
+{
+        GdmSmartcardExtension *extension = GDM_SMARTCARD_EXTENSION (conversation);
+
+        if (!extension->priv->answer_pending) {
+                return FALSE;
+        }
+
+        gtk_widget_grab_focus (extension->priv->prompt_entry);
+        return TRUE;
+}
+
+GIcon *
+gdm_smartcard_extension_get_icon (GdmTask *task)
+{
+        GdmSmartcardExtension *extension = GDM_SMARTCARD_EXTENSION (task);
+        return g_object_ref (extension->priv->icon);
+}
+
+char *
+gdm_smartcard_extension_get_name (GdmTask *task)
+{
+        return g_strdup (_("Smartcard Authentication"));
+}
+
+char *
+gdm_smartcard_extension_get_description (GdmTask *task)
+{
+        return g_strdup (_("Log into session with smartcard"));
+}
+
+gboolean
+gdm_smartcard_extension_is_choosable (GdmTask *task)
+{
+        return TRUE;
+}
+
+gboolean
+gdm_smartcard_extension_is_visible (GdmTask *task)
+{
+        char *contents, **lines, *pid_dir;
+        gboolean ret;
+        guint i;
+        pid_t pid;
+
+        /*
+         * FIXME: We shouldn't use a distro specific hack here
+         */
+
+        if (g_file_get_contents ("/var/run/pcscd.pid",
+                                 &contents, NULL, NULL) == FALSE) {
+                return FALSE;
+        }
+
+        pid = (pid_t) atoi (contents);
+        g_free (contents);
+
+        if (pid == 0) {
+                return FALSE;
+        }
+
+        pid_dir = g_strdup_printf ("/proc/%d", (int) pid);
+        if (!g_file_test (pid_dir, G_FILE_TEST_EXISTS)) {
+                g_free (pid_dir);
+                return FALSE;
+        }
+        g_free (pid_dir);
+
+        if (g_file_get_contents ("/etc/sysconfig/authconfig",
+                                 &contents, NULL, NULL) == FALSE) {
+                return FALSE;
+        }
+
+        lines = g_strsplit (contents, "\n", -1);
+        g_free (contents);
+
+        ret = FALSE;
+
+        for (i = 0; lines[i] ; i++) {
+                if (g_str_has_prefix (lines[i], "USESMARTCARD=") != FALSE) {
+                        char *value;
+
+                        value = lines[i] + strlen ("USESMARTCARD=");
+                        if (rpmatch (value)) {
+                                ret = TRUE;
+                                break;
+                        }
+                }
+        }
+
+        g_strfreev (lines);
+
+        return TRUE;
+}
+
+static void
+gdm_task_iface_init (GdmTaskIface *iface)
+{
+        iface->get_icon = gdm_smartcard_extension_get_icon;
+        iface->get_description = gdm_smartcard_extension_get_description;
+        iface->get_name = gdm_smartcard_extension_get_name;
+        iface->is_choosable = gdm_smartcard_extension_is_choosable;
+        iface->is_visible = gdm_smartcard_extension_is_visible;
+}
+
+static void
+gdm_conversation_iface_init (GdmConversationIface *iface)
+{
+        iface->set_message = gdm_smartcard_extension_set_message;
+        iface->ask_question = gdm_smartcard_extension_ask_question;
+        iface->ask_secret = gdm_smartcard_extension_ask_secret;
+        iface->reset = gdm_smartcard_extension_reset;
+        iface->set_ready = gdm_smartcard_extension_set_ready;
+        iface->get_service_name = gdm_smartcard_extension_get_service_name;
+        iface->get_page = gdm_smartcard_extension_get_page;
+        iface->get_actions = gdm_smartcard_extension_get_actions;
+        iface->request_answer = gdm_smartcard_extension_request_answer;
+        iface->focus = gdm_smartcard_extension_focus;
+}
+
+static void
+gdm_greeter_extension_iface_init (GdmGreeterExtensionIface *iface)
+{
+}
+
+static void
+gdm_smartcard_extension_class_init (GdmSmartcardExtensionClass *extension_class)
+{
+        GObjectClass *object_class;
+
+        object_class = G_OBJECT_CLASS (extension_class);
+
+        object_class->finalize = gdm_smartcard_extension_finalize;
+
+        g_type_class_add_private (extension_class,
+                                  sizeof (GdmSmartcardExtensionPrivate));
+}
+
+static void
+gdm_smartcard_extension_finalize (GObject *object)
+{
+        GdmSmartcardExtension *extension = GDM_SMARTCARD_EXTENSION (object);
+
+        if (extension->priv->worker_pid > 0) {
+                stop_watching_for_smartcards (extension);
+        }
+}
+
+static void
+create_page (GdmSmartcardExtension *extension)
+{
+        GtkBuilder *builder;
+        GObject *object;
+        GError *error;
+
+        builder = gtk_builder_new ();
+
+        error = NULL;
+        gtk_builder_add_from_file (builder,
+                                   PLUGINDATADIR "/page.ui",
+                                   &error);
+
+        if (error != NULL) {
+                g_warning ("Could not load UI file: %s", error->message);
+                g_error_free (error);
+                return;
+        }
+
+        object = gtk_builder_get_object (builder, "page");
+        g_object_ref (object);
+
+        extension->priv->page = GTK_WIDGET (object);
+
+        object = gtk_builder_get_object (builder, "auth-prompt-label");
+        g_object_ref (object);
+        extension->priv->prompt_label = GTK_WIDGET (object);
+        gtk_widget_hide (extension->priv->prompt_label);
+
+        object = gtk_builder_get_object (builder, "auth-prompt-entry");
+        g_object_ref (object);
+        extension->priv->prompt_entry = GTK_WIDGET (object);
+        gtk_widget_hide (extension->priv->prompt_entry);
+
+        object = gtk_builder_get_object (builder, "auth-message-label");
+        g_object_ref (object);
+        extension->priv->message_label = GTK_WIDGET (object);
+        gtk_widget_show (extension->priv->message_label);
+
+        g_object_unref (builder);
+}
+
+static void
+on_activate_log_in (GdmSmartcardExtension *extension)
+{
+        gdm_smartcard_extension_request_answer (GDM_CONVERSATION (extension));
+        gtk_action_set_sensitive (extension->priv->login_action, FALSE);
+}
+
+static void
+create_actions (GdmSmartcardExtension *extension)
+{
+        GtkAction *action;
+
+        extension->priv->actions = gtk_action_group_new ("gdm-smartcard-extension");
+
+        action = gtk_action_new (GDM_CONVERSATION_DEFAULT_ACTION,
+                                 _("Log In"), NULL, NULL);
+        g_signal_connect_swapped (action, "activate",
+                                  G_CALLBACK (on_activate_log_in), extension);
+        g_object_set (G_OBJECT (action), "icon-name", "go-home", NULL);
+        gtk_action_group_add_action (extension->priv->actions,
+                                     action);
+
+        gtk_action_set_visible (action, FALSE);
+        extension->priv->login_action = action;
+}
+
+static void
+gdm_smartcard_extension_init (GdmSmartcardExtension *extension)
+{
+        extension->priv = G_TYPE_INSTANCE_GET_PRIVATE (extension,
+                                                       GDM_TYPE_SMARTCARD_EXTENSION,
+                                                       GdmSmartcardExtensionPrivate);
+
+        extension->priv->icon = g_themed_icon_new ("gdm-smartcard");
+        create_page (extension);
+        create_actions (extension);
+        gdm_smartcard_extension_reset (GDM_CONVERSATION (extension));
+}
diff --git a/gui/simple-greeter/plugins/smartcard/gdm-smartcard-extension.h b/gui/simple-greeter/plugins/smartcard/gdm-smartcard-extension.h
new file mode 100644
index 0000000..285b51a
--- /dev/null
+++ b/gui/simple-greeter/plugins/smartcard/gdm-smartcard-extension.h
@@ -0,0 +1,56 @@
+/*
+ * Copyright (C) 2009 Red Hat, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.
+ *
+ * Written By: Ray Strode <rstrode redhat com>
+ */
+
+#ifndef __GDM_SMARTCARD_EXTENSION_H
+#define __GDM_SMARTCARD_EXTENSION_H
+
+#include <glib-object.h>
+#include "gdm-greeter-extension.h"
+
+G_BEGIN_DECLS
+
+#define GDM_TYPE_SMARTCARD_EXTENSION (gdm_smartcard_extension_get_type ())
+#define GDM_SMARTCARD_EXTENSION(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GDM_TYPE_SMARTCARD_EXTENSION, GdmSmartcardExtension))
+#define GDM_SMARTCARD_EXTENSION_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GDM_TYPE_SMARTCARD_EXTENSION, GdmSmartcardExtensionClass))
+#define GDM_IS_SMARTCARD_EXTENSION(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GDM_TYPE_SMARTCARD_EXTENSION))
+#define GDM_IS_SMARTCARD_EXTENSION_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GDM_TYPE_SMARTCARD_EXTENSION))
+#define GDM_SMARTCARD_EXTENSION_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS((obj), GDM_TYPE_SMARTCARD_EXTENSION, GdmSmartcardExtensionClass))
+
+typedef struct _GdmSmartcardExtensionPrivate GdmSmartcardExtensionPrivate;
+
+typedef struct
+{
+        GObject                  parent;
+        GdmSmartcardExtensionPrivate *priv;
+} GdmSmartcardExtension;
+
+typedef struct
+{
+        GObjectClass parent_class;
+} GdmSmartcardExtensionClass;
+
+GType                 gdm_smartcard_extension_get_type      (void);
+
+GdmSmartcardExtension *gdm_smartcard_extension_new       (void);
+
+G_END_DECLS
+
+#endif /* GDM_SMARTCARD_EXTENSION_H */
diff --git a/gui/simple-greeter/plugins/smartcard/gdm-smartcard-manager.c b/gui/simple-greeter/plugins/smartcard/gdm-smartcard-manager.c
new file mode 100644
index 0000000..5af0da9
--- /dev/null
+++ b/gui/simple-greeter/plugins/smartcard/gdm-smartcard-manager.c
@@ -0,0 +1,1521 @@
+/* gdm-smartcard-manager.c - object for monitoring smartcard insertion and
+ *                           removal events
+ *
+ * Copyright (C) 2006, 2009 Red Hat, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.
+ *
+ * Written By: Ray Strode
+ */
+#define _GNU_SOURCE
+#include "gdm-smartcard-manager.h"
+
+#define GDM_SMARTCARD_ENABLE_INTERNAL_API
+#include "gdm-smartcard.h"
+
+#include <dirent.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <limits.h>
+#include <poll.h>
+#include <signal.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/resource.h>
+#include <sys/time.h>
+#include <sys/wait.h>
+#include <unistd.h>
+
+#include <glib.h>
+#include <glib/gi18n.h>
+
+#include <prerror.h>
+#include <prinit.h>
+#include <nss.h>
+#include <pk11func.h>
+#include <secmod.h>
+#include <secerr.h>
+
+#ifndef GDM_SMARTCARD_MANAGER_DRIVER
+#define GDM_SMARTCARD_MANAGER_DRIVER LIBDIR"/pkcs11/libcoolkeypk11.so"
+#endif
+
+#ifndef GDM_SMARTCARD_MANAGER_NSS_DB
+#define GDM_SMARTCARD_MANAGER_NSS_DB SYSCONFDIR"/pki/nssdb"
+#endif
+
+#ifndef GDM_MAX_OPEN_FILE_DESCRIPTORS
+#define GDM_MAX_OPEN_FILE_DESCRIPTORS 1024
+#endif
+
+#ifndef GDM_OPEN_FILE_DESCRIPTORS_DIR
+#define GDM_OPEN_FILE_DESCRIPTORS_DIR "/proc/self/fd"
+#endif
+
+typedef enum _GdmSmartcardManagerState GdmSmartcardManagerState;
+typedef struct _GdmSmartcardManagerWorker GdmSmartcardManagerWorker;
+
+enum _GdmSmartcardManagerState {
+        GDM_SMARTCARD_MANAGER_STATE_STOPPED = 0,
+        GDM_SMARTCARD_MANAGER_STATE_STARTING,
+        GDM_SMARTCARD_MANAGER_STATE_STARTED,
+        GDM_SMARTCARD_MANAGER_STATE_STOPPING,
+};
+
+struct _GdmSmartcardManagerPrivate {
+        GdmSmartcardManagerState state;
+        GList        *modules;
+        char        *module_path;
+
+        GList        *workers;
+
+        GPid smartcard_event_watcher_pid;
+        GHashTable *smartcards;
+
+        guint poll_timeout_id;
+
+        guint32 is_unstoppable : 1;
+        guint32 nss_is_loaded : 1;
+};
+
+struct _GdmSmartcardManagerWorker {
+        GdmSmartcardManager *manager;
+        gint manager_fd;
+
+        GThread      *thread;
+        SECMODModule *module;
+        GHashTable *smartcards;
+        gint fd;
+        GSource *event_source;
+
+        guint32 nss_is_loaded : 1;
+};
+
+static void gdm_smartcard_manager_finalize (GObject *object);
+static void gdm_smartcard_manager_class_install_signals (GdmSmartcardManagerClass *service_class);
+static void gdm_smartcard_manager_class_install_properties (GdmSmartcardManagerClass *service_class);
+static void gdm_smartcard_manager_set_property (GObject       *object,
+                                                guint          prop_id,
+                                                const GValue  *value,
+                                                GParamSpec    *pspec);
+static void gdm_smartcard_manager_get_property (GObject    *object,
+                                                guint       prop_id,
+                                                GValue     *value,
+                                                GParamSpec *pspec);
+static void gdm_smartcard_manager_set_module_path (GdmSmartcardManager *manager,
+                                                   const char          *module_path);
+static void gdm_smartcard_manager_card_removed_handler (GdmSmartcardManager *manager,
+                                                        GdmSmartcard        *card);
+static void gdm_smartcard_manager_card_inserted_handler (GdmSmartcardManager *manager_class,
+                                                         GdmSmartcard        *card);
+static gboolean gdm_smartcard_manager_stop_now (GdmSmartcardManager *manager);
+static void gdm_smartcard_manager_queue_stop (GdmSmartcardManager *manager);
+
+static GdmSmartcardManagerWorker *gdm_smartcard_manager_create_worker (GdmSmartcardManager  *manager,
+                                                                       SECMODModule         *module);
+
+static GdmSmartcardManagerWorker * gdm_smartcard_manager_worker_new (GdmSmartcardManager *manager,
+                                                                     int                  worker_fd,
+                                                                     int                  manager_fd,
+                                                                     SECMODModule        *module);
+static void gdm_smartcard_manager_worker_free (GdmSmartcardManagerWorker *worker);
+static gboolean gdm_open_pipe (gint *write_fd, gint *read_fd);
+static gboolean sc_read_bytes (gint fd, gpointer bytes, gsize num_bytes);
+static gboolean sc_write_bytes (gint fd, gconstpointer bytes, gsize num_bytes);
+static GdmSmartcard *sc_read_smartcard (gint fd, SECMODModule *module);
+static gboolean sc_write_smartcard (gint fd, GdmSmartcard *card);
+
+enum {
+        PROP_0 = 0,
+        PROP_MODULE_PATH,
+        NUMBER_OF_PROPERTIES
+};
+
+enum {
+        SMARTCARD_INSERTED = 0,
+        SMARTCARD_REMOVED,
+        ERROR,
+        NUMBER_OF_SIGNALS
+};
+
+static guint gdm_smartcard_manager_signals[NUMBER_OF_SIGNALS];
+
+G_DEFINE_TYPE (GdmSmartcardManager,
+               gdm_smartcard_manager,
+               G_TYPE_OBJECT);
+
+static void
+gdm_smartcard_manager_class_init (GdmSmartcardManagerClass *manager_class)
+{
+        GObjectClass *gobject_class;
+
+        gobject_class = G_OBJECT_CLASS (manager_class);
+
+        gobject_class->finalize = gdm_smartcard_manager_finalize;
+
+        gdm_smartcard_manager_class_install_signals (manager_class);
+        gdm_smartcard_manager_class_install_properties (manager_class);
+
+        g_type_class_add_private (manager_class,
+                                  sizeof (GdmSmartcardManagerPrivate));
+}
+
+static void
+gdm_smartcard_manager_class_install_properties (GdmSmartcardManagerClass *card_class)
+{
+        GObjectClass *object_class;
+        GParamSpec *param_spec;
+
+        object_class = G_OBJECT_CLASS (card_class);
+        object_class->set_property = gdm_smartcard_manager_set_property;
+        object_class->get_property = gdm_smartcard_manager_get_property;
+
+        param_spec = g_param_spec_string ("module-path", _("Module Path"),
+                                          _("path to smartcard PKCS #11 driver"),
+                                          NULL, G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY);
+        g_object_class_install_property (object_class, PROP_MODULE_PATH, param_spec);
+}
+
+static void
+gdm_smartcard_manager_set_property (GObject       *object,
+                                    guint          prop_id,
+                                    const GValue  *value,
+                                    GParamSpec    *pspec)
+{
+        GdmSmartcardManager *manager = GDM_SMARTCARD_MANAGER (object);
+
+        switch (prop_id) {
+                case PROP_MODULE_PATH:
+                        gdm_smartcard_manager_set_module_path (manager,
+                                                                   g_value_get_string (value));
+                        break;
+
+                default:
+                        G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+                        break;
+        }
+}
+
+static void
+gdm_smartcard_manager_get_property (GObject    *object,
+                                    guint       prop_id,
+                                    GValue     *value,
+                                    GParamSpec *pspec)
+{
+        GdmSmartcardManager *manager = GDM_SMARTCARD_MANAGER (object);
+        char *module_path;
+
+        switch (prop_id) {
+                case PROP_MODULE_PATH:
+                        module_path = gdm_smartcard_manager_get_module_path (manager);
+                        g_value_set_string (value, module_path);
+                        g_free (module_path);
+                        break;
+
+                default:
+                        G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+                        break;
+        }
+}
+
+char *
+gdm_smartcard_manager_get_module_path (GdmSmartcardManager *manager)
+{
+        return manager->priv->module_path;
+}
+
+static void
+gdm_smartcard_manager_set_module_path (GdmSmartcardManager *manager,
+                                       const char          *module_path)
+{
+        if ((manager->priv->module_path == NULL) && (module_path == NULL)) {
+                return;
+        }
+
+        if (((manager->priv->module_path == NULL) ||
+         (module_path == NULL) ||
+         (strcmp (manager->priv->module_path, module_path) != 0))) {
+                g_free (manager->priv->module_path);
+                manager->priv->module_path = g_strdup (module_path);
+                g_object_notify (G_OBJECT (manager), "module-path");
+        }
+}
+
+static void
+gdm_smartcard_manager_card_removed_handler (GdmSmartcardManager *manager,
+                                            GdmSmartcard        *card)
+{
+        g_debug ("informing smartcard of its removal");
+        _gdm_smartcard_set_state (card, GDM_SMARTCARD_STATE_REMOVED);
+        g_debug ("done");
+}
+
+static void
+gdm_smartcard_manager_card_inserted_handler (GdmSmartcardManager *manager,
+                                             GdmSmartcard        *card)
+{
+        g_debug ("informing smartcard of its insertion");
+
+        _gdm_smartcard_set_state (card, GDM_SMARTCARD_STATE_INSERTED);
+        g_debug ("done");
+
+}
+
+static void
+gdm_smartcard_manager_class_install_signals (GdmSmartcardManagerClass *manager_class)
+{
+        GObjectClass *object_class;
+
+        object_class = G_OBJECT_CLASS (manager_class);
+
+        gdm_smartcard_manager_signals[SMARTCARD_INSERTED] =
+                g_signal_new ("smartcard-inserted",
+                              G_OBJECT_CLASS_TYPE (object_class),
+                              G_SIGNAL_RUN_FIRST,
+                              G_STRUCT_OFFSET (GdmSmartcardManagerClass,
+                                               smartcard_inserted),
+                              NULL, NULL, g_cclosure_marshal_VOID__POINTER,
+                              G_TYPE_NONE, 1, G_TYPE_POINTER);
+        manager_class->smartcard_inserted = gdm_smartcard_manager_card_inserted_handler;
+
+        gdm_smartcard_manager_signals[SMARTCARD_REMOVED] =
+                g_signal_new ("smartcard-removed",
+                              G_OBJECT_CLASS_TYPE (object_class),
+                              G_SIGNAL_RUN_FIRST,
+                              G_STRUCT_OFFSET (GdmSmartcardManagerClass,
+                                               smartcard_removed),
+                              NULL, NULL, g_cclosure_marshal_VOID__POINTER,
+                              G_TYPE_NONE, 1, G_TYPE_POINTER);
+        manager_class->smartcard_removed = gdm_smartcard_manager_card_removed_handler;
+
+        gdm_smartcard_manager_signals[ERROR] =
+                g_signal_new ("error",
+                              G_OBJECT_CLASS_TYPE (object_class),
+                              G_SIGNAL_RUN_LAST,
+                              G_STRUCT_OFFSET (GdmSmartcardManagerClass, error),
+                              NULL, NULL, g_cclosure_marshal_VOID__POINTER,
+                              G_TYPE_NONE, 1, G_TYPE_POINTER);
+        manager_class->error = NULL;
+}
+
+static gboolean
+sc_slot_id_equal (CK_SLOT_ID *slot_id_1,
+                      CK_SLOT_ID *slot_id_2)
+{
+        g_assert (slot_id_1 != NULL);
+        g_assert (slot_id_2 != NULL);
+
+        return *slot_id_1 == *slot_id_2;
+}
+
+static gboolean
+sc_slot_id_hash (CK_SLOT_ID *slot_id)
+{
+        guint32 upper_bits, lower_bits;
+        gint temp;
+
+        if (sizeof (CK_SLOT_ID) == sizeof (gint)) {
+                return g_int_hash (slot_id);
+        }
+
+        upper_bits = ((*slot_id) >> 31) - 1;
+        lower_bits = (*slot_id) & 0xffffffff;
+
+        /* The upper bits are almost certainly always zero,
+         * so let's degenerate to g_int_hash for the
+         * (very) common case
+         */
+        temp = lower_bits + upper_bits;
+        return upper_bits + g_int_hash (&temp);
+}
+
+static void
+gdm_smartcard_manager_init (GdmSmartcardManager *manager)
+{
+        g_debug ("initializing smartcard manager");
+
+        manager->priv = G_TYPE_INSTANCE_GET_PRIVATE (manager,
+                                                     GDM_TYPE_SMARTCARD_MANAGER,
+                                                     GdmSmartcardManagerPrivate);
+        manager->priv->poll_timeout_id = 0;
+        manager->priv->is_unstoppable = FALSE;
+
+        manager->priv->smartcards =
+                g_hash_table_new_full (g_str_hash,
+                                       g_str_equal,
+                                       (GDestroyNotify) g_free,
+                                       (GDestroyNotify) g_object_unref);
+
+        if (!g_thread_supported()) {
+                g_thread_init (NULL);
+        }
+
+}
+
+static void
+gdm_smartcard_manager_finalize (GObject *object)
+{
+        GdmSmartcardManager *manager;
+        GObjectClass *gobject_class;
+
+        manager = GDM_SMARTCARD_MANAGER (object);
+        gobject_class =
+                G_OBJECT_CLASS (gdm_smartcard_manager_parent_class);
+
+        gdm_smartcard_manager_stop_now (manager);
+
+        g_hash_table_destroy (manager->priv->smartcards);
+        manager->priv->smartcards = NULL;
+
+        gobject_class->finalize (object);
+}
+
+GQuark
+gdm_smartcard_manager_error_quark (void)
+{
+        static GQuark error_quark = 0;
+
+        if (error_quark == 0) {
+                error_quark = g_quark_from_static_string ("gdm-smartcard-manager-error-quark");
+        }
+
+        return error_quark;
+}
+
+GdmSmartcardManager *
+gdm_smartcard_manager_new (const char *module_path)
+{
+        GdmSmartcardManager *instance;
+
+        instance = GDM_SMARTCARD_MANAGER (g_object_new (GDM_TYPE_SMARTCARD_MANAGER,
+                                                        "module-path", module_path,
+                                                        NULL));
+
+        return instance;
+}
+
+static void
+gdm_smartcard_manager_emit_error (GdmSmartcardManager *manager,
+                                  GError              *error)
+{
+        manager->priv->is_unstoppable = TRUE;
+        g_signal_emit (manager, gdm_smartcard_manager_signals[ERROR], 0,
+                       error);
+        manager->priv->is_unstoppable = FALSE;
+}
+
+static void
+gdm_smartcard_manager_emit_smartcard_inserted (GdmSmartcardManager *manager,
+                                               GdmSmartcard        *card)
+{
+        manager->priv->is_unstoppable = TRUE;
+        g_signal_emit (manager, gdm_smartcard_manager_signals[SMARTCARD_INSERTED], 0,
+                       card);
+        manager->priv->is_unstoppable = FALSE;
+}
+
+static void
+gdm_smartcard_manager_emit_smartcard_removed (GdmSmartcardManager *manager,
+                                              GdmSmartcard        *card)
+{
+        GdmSmartcardManagerState old_state;
+
+        old_state = manager->priv->state;
+        manager->priv->is_unstoppable = TRUE;
+        g_signal_emit (manager, gdm_smartcard_manager_signals[SMARTCARD_REMOVED], 0,
+                       card);
+        manager->priv->is_unstoppable = FALSE;
+}
+
+static gboolean
+gdm_smartcard_manager_check_for_and_process_events (GIOChannel          *io_channel,
+                                                    GIOCondition         condition,
+                                                    GdmSmartcardManagerWorker *worker)
+{
+        GdmSmartcard *card;
+        GdmSmartcardManager *manager;
+        gboolean should_stop;
+        guchar event_type;
+        char *card_name;
+        gint fd;
+
+        manager = worker->manager;
+
+        g_debug ("event!");
+        card = NULL;
+        should_stop = (condition & G_IO_HUP) || (condition & G_IO_ERR);
+
+        if (should_stop) {
+                g_debug ("received %s on event socket, stopping "
+                          "manager...",
+                          (condition & G_IO_HUP) && (condition & G_IO_ERR)?
+                          "error and hangup" :
+                          (condition & G_IO_HUP)?
+                          "hangup" : "error");
+        }
+
+        if (!(condition & G_IO_IN)) {
+                g_debug ("nevermind outta here!");
+                goto out;
+        }
+
+        fd = g_io_channel_unix_get_fd (io_channel);
+
+        event_type = '\0';
+        if (!sc_read_bytes (fd, &event_type, 1)) {
+                g_debug ("could not read event type, stopping");
+                should_stop = TRUE;
+                goto out;
+        }
+
+        card = sc_read_smartcard (fd, worker->module);
+
+        if (card == NULL) {
+                g_debug ("could not read card, stopping");
+                should_stop = TRUE;
+                goto out;
+        }
+
+        card_name = gdm_smartcard_get_name (card);
+        g_debug ("card '%s' had event %c", card_name, event_type);
+
+        switch (event_type) {
+                case 'I':
+                        g_hash_table_replace (manager->priv->smartcards,
+                                              card_name, card);
+                        card_name = NULL;
+
+                        gdm_smartcard_manager_emit_smartcard_inserted (manager, card);
+                        card = NULL;
+                        break;
+
+                case 'R':
+                        gdm_smartcard_manager_emit_smartcard_removed (manager, card);
+                        if (!g_hash_table_remove (manager->priv->smartcards, card_name)) {
+                                g_debug ("got removal event of unknown card!");
+                        }
+                        g_free (card_name);
+                        card_name = NULL;
+                        card = NULL;
+                        break;
+
+                default:
+                        g_free (card_name);
+                        card_name = NULL;
+                        g_object_unref (card);
+
+                        should_stop = TRUE;
+                        break;
+        }
+
+out:
+        if (should_stop) {
+                GError *error;
+
+                error = g_error_new (GDM_SMARTCARD_MANAGER_ERROR,
+                                     GDM_SMARTCARD_MANAGER_ERROR_WATCHING_FOR_EVENTS,
+                                     "%s", (condition & G_IO_IN) ? g_strerror (errno) : _("received error or hang up from event source"));
+
+                gdm_smartcard_manager_emit_error (manager, error);
+                g_error_free (error);
+                gdm_smartcard_manager_stop_now (manager);
+                return FALSE;
+        }
+
+        return TRUE;
+}
+
+static void
+stop_manager (GdmSmartcardManager *manager)
+{
+        manager->priv->state = GDM_SMARTCARD_MANAGER_STATE_STOPPED;
+
+        if (manager->priv->nss_is_loaded) {
+                NSS_Shutdown ();
+                manager->priv->nss_is_loaded = FALSE;
+        }
+        g_debug ("smartcard manager stopped");
+}
+
+static void
+stop_worker (GdmSmartcardManagerWorker *worker)
+{
+        GdmSmartcardManager *manager;
+
+        manager = worker->manager;
+
+        if (worker->event_source != NULL) {
+                g_source_destroy (worker->event_source);
+                worker->event_source = NULL;
+        }
+
+        if (worker->thread != NULL) {
+                SECMOD_CancelWait (worker->module);
+                worker->thread = NULL;
+        }
+
+        SECMOD_DestroyModule (worker->module);
+        manager->priv->workers = g_list_remove (manager->priv->workers, worker);
+
+        if (manager->priv->workers == NULL && manager->priv->state != GDM_SMARTCARD_MANAGER_STATE_STOPPED) {
+                stop_manager (manager);
+        }
+}
+
+static void
+gdm_smartcard_manager_event_processing_stopped_handler (GdmSmartcardManagerWorker *worker)
+{
+        worker->event_source = NULL;
+
+        stop_worker (worker);
+}
+
+static gboolean
+gdm_open_pipe (gint *write_fd,
+                  gint *read_fd)
+{
+        gint pipe_fds[2] = { -1, -1 };
+
+        g_assert (write_fd != NULL);
+        g_assert (read_fd != NULL);
+
+        if (pipe (pipe_fds) < 0) {
+                return FALSE;
+        }
+
+        if (fcntl (pipe_fds[0], F_SETFD, FD_CLOEXEC) < 0) {
+                close (pipe_fds[0]);
+                close (pipe_fds[1]);
+                return FALSE;
+        }
+
+        if (fcntl (pipe_fds[1], F_SETFD, FD_CLOEXEC) < 0) {
+                close (pipe_fds[0]);
+                close (pipe_fds[1]);
+                return FALSE;
+        }
+
+        *read_fd = pipe_fds[0];
+        *write_fd = pipe_fds[1];
+
+        return TRUE;
+}
+
+static void
+gdm_smartcard_manager_stop_watching_for_events (GdmSmartcardManager  *manager)
+{
+        GList *node;
+
+        node = manager->priv->workers;
+        while (node != NULL) {
+                GdmSmartcardManagerWorker *worker;
+                GList *next_node;
+
+                worker = (GdmSmartcardManagerWorker *) node->data;
+                next_node = node->next;
+
+                stop_worker (worker);
+
+                node = next_node;
+        }
+}
+
+static gboolean
+sc_load_nss (GError **error)
+{
+        SECStatus status = SECSuccess;
+        static const guint32 flags =
+        NSS_INIT_READONLY |
+        NSS_INIT_FORCEOPEN | NSS_INIT_NOROOTINIT |
+        NSS_INIT_OPTIMIZESPACE | NSS_INIT_PK11RELOAD;
+
+        g_debug ("attempting to load NSS database '%s'",
+                 GDM_SMARTCARD_MANAGER_NSS_DB);
+
+        PR_Init (PR_USER_THREAD, PR_PRIORITY_NORMAL, 0);
+
+        status = NSS_Initialize (GDM_SMARTCARD_MANAGER_NSS_DB,
+                                 "", "", SECMOD_DB, flags);
+
+        if (status != SECSuccess) {
+                gsize error_message_size;
+                char *error_message;
+
+                error_message_size = PR_GetErrorTextLength ();
+
+                if (error_message_size == 0) {
+                        g_debug ("NSS security system could not be initialized");
+                        g_set_error (error,
+                                     GDM_SMARTCARD_MANAGER_ERROR,
+                                     GDM_SMARTCARD_MANAGER_ERROR_WITH_NSS,
+                                     _("NSS security system could not be initialized"));
+                        goto out;
+                }
+
+                error_message = g_slice_alloc0 (error_message_size);
+                PR_GetErrorText (error_message);
+
+                g_set_error (error,
+                             GDM_SMARTCARD_MANAGER_ERROR,
+                             GDM_SMARTCARD_MANAGER_ERROR_WITH_NSS,
+                             "%s", error_message);
+                g_debug ("NSS security system could not be initialized - %s",
+                          error_message);
+
+                g_slice_free1 (error_message_size, error_message);
+
+                goto out;
+        }
+
+        g_debug ("NSS database sucessfully loaded");
+        return TRUE;
+
+out:
+        g_debug ("NSS database couldn't be sucessfully loaded");
+        return FALSE;
+}
+
+static GList *
+get_available_modules (GdmSmartcardManager  *manager)
+{
+        SECMODModuleList *module_list, *tmp;
+        GList *modules;
+
+        g_debug ("Getting list of suitable modules");
+
+        module_list = SECMOD_GetDefaultModuleList ();
+        modules = NULL;
+        for (tmp = module_list; tmp != NULL; tmp = tmp->next) {
+                if (!SECMOD_HasRemovableSlots (tmp->module) ||
+                    !tmp->module->loaded)
+                        continue;
+
+                g_debug ("Using module '%s'", tmp->module->commonName);
+
+                modules = g_list_prepend (modules,
+                                          SECMOD_ReferenceModule (tmp->module));
+        }
+
+        return modules;
+}
+
+static gboolean
+load_driver (GdmSmartcardManager  *manager,
+             char                 *module_path,
+             GError              **error)
+{
+        GList *modules;
+        char *module_spec;
+        gboolean module_explicitly_specified;
+
+        g_debug ("attempting to load driver...");
+
+        modules = NULL;
+        module_explicitly_specified = module_path != NULL;
+        if (module_explicitly_specified) {
+                SECMODModule *module;
+
+                module_spec = g_strdup_printf ("library=\"%s\"", module_path);
+                g_debug ("loading smartcard driver using spec '%s'",
+                          module_spec);
+
+                module = SECMOD_LoadUserModule (module_spec,
+                                                NULL /* parent */,
+                                                FALSE /* recurse */);
+                g_free (module_spec);
+                module_spec = NULL;
+
+                if (!SECMOD_HasRemovableSlots (module) ||
+                    !module->loaded) {
+                        modules = g_list_prepend (modules, module);
+                } else {
+                        g_debug ("fallback module found but not %s",
+                                 SECMOD_HasRemovableSlots (module)?
+                                 "removable" : "loaded");
+                        SECMOD_DestroyModule (module);
+                }
+
+        } else {
+                SECMODListLock *lock;
+
+                lock = SECMOD_GetDefaultModuleListLock ();
+
+                if (lock != NULL) {
+                        SECMOD_GetReadLock (lock);
+                        modules = get_available_modules (manager);
+                        SECMOD_ReleaseReadLock (lock);
+                }
+
+                /* fallback to compiled in driver path
+                 */
+                if (modules == NULL) {
+                        SECMODModule *module;
+                        module_path = GDM_SMARTCARD_MANAGER_DRIVER;
+                        module_spec = g_strdup_printf ("library=\"%s\"", module_path);
+                        g_debug ("loading smartcard driver using spec '%s'",
+                                module_spec);
+
+                        module = SECMOD_LoadUserModule (module_spec,
+                                NULL /* parent */,
+                                FALSE /* recurse */);
+                        g_free (module_spec);
+                        module_spec = NULL;
+
+                        if (!SECMOD_HasRemovableSlots (module) ||
+                            !module->loaded) {
+                                modules = g_list_prepend (modules, module);
+                        } else {
+                                g_debug ("fallback module found but not loaded");
+                                SECMOD_DestroyModule (module);
+                        }
+                }
+
+        }
+
+        if (!module_explicitly_specified && modules == NULL) {
+                g_set_error (error,
+                             GDM_SMARTCARD_MANAGER_ERROR,
+                             GDM_SMARTCARD_MANAGER_ERROR_LOADING_DRIVER,
+                             _("no suitable smartcard driver could be found"));
+        } else if (modules == NULL) {
+
+                gsize error_message_size;
+                char *error_message;
+
+                error_message_size = PR_GetErrorTextLength ();
+
+                if (error_message_size == 0) {
+                        g_debug ("smartcard driver '%s' could not be loaded",
+                                  module_path);
+                        g_set_error (error,
+                                     GDM_SMARTCARD_MANAGER_ERROR,
+                                     GDM_SMARTCARD_MANAGER_ERROR_LOADING_DRIVER,
+                                     _("smartcard driver '%s' could not be "
+                                       "loaded"), module_path);
+                        goto out;
+                }
+
+                error_message = g_slice_alloc0 (error_message_size);
+                PR_GetErrorText (error_message);
+
+                g_set_error (error,
+                             GDM_SMARTCARD_MANAGER_ERROR,
+                             GDM_SMARTCARD_MANAGER_ERROR_LOADING_DRIVER,
+                             "%s", error_message);
+
+                g_debug ("smartcard driver '%s' could not be loaded - %s",
+                          module_path, error_message);
+                g_slice_free1 (error_message_size, error_message);
+        }
+
+        manager->priv->modules = modules;
+out:
+        return manager->priv->modules != NULL;
+}
+
+static void
+gdm_smartcard_manager_get_all_cards (GdmSmartcardManager *manager)
+{
+        GList *node;
+        int i;
+
+        node = manager->priv->workers;
+        while (node != NULL) {
+
+                GdmSmartcardManagerWorker *worker;
+
+                worker = (GdmSmartcardManagerWorker *) node->data;
+
+                for (i = 0; i < worker->module->slotCount; i++) {
+                        GdmSmartcard *card;
+                        CK_SLOT_ID    slot_id;
+                        gint          slot_series;
+                        char         *card_name;
+
+                        slot_id = PK11_GetSlotID (worker->module->slots[i]);
+                        slot_series = PK11_GetSlotSeries (worker->module->slots[i]);
+
+                        card = _gdm_smartcard_new (worker->module,
+                                                   slot_id, slot_series);
+
+                        card_name = gdm_smartcard_get_name (card);
+
+                        g_hash_table_replace (manager->priv->smartcards,
+                                              card_name, card);
+                }
+                node = node->next;
+        }
+}
+
+static GdmSmartcardManagerWorker *
+start_worker (GdmSmartcardManager  *manager,
+              SECMODModule         *module,
+              GError              **error)
+{
+        GIOChannel *io_channel;
+        GSource *source;
+        GIOFlags channel_flags;
+        GdmSmartcardManagerWorker *worker;
+
+        worker = gdm_smartcard_manager_create_worker (manager, module);
+
+        if (worker == NULL) {
+                g_set_error (error,
+                             GDM_SMARTCARD_MANAGER_ERROR,
+                             GDM_SMARTCARD_MANAGER_ERROR_WATCHING_FOR_EVENTS,
+                             _("could not watch for incoming card events - %s"),
+                             g_strerror (errno));
+
+                goto out;
+        }
+
+        io_channel = g_io_channel_unix_new (worker->manager_fd);
+
+        channel_flags = g_io_channel_get_flags (io_channel);
+
+        source = g_io_create_watch (io_channel, G_IO_IN | G_IO_HUP);
+        g_io_channel_unref (io_channel);
+        io_channel = NULL;
+
+        worker->event_source = source;
+
+        g_source_set_callback (worker->event_source,
+                               (GSourceFunc) (GIOFunc)
+                               gdm_smartcard_manager_check_for_and_process_events,
+                               worker,
+                               (GDestroyNotify)
+                               gdm_smartcard_manager_event_processing_stopped_handler);
+        g_source_attach (worker->event_source, NULL);
+        g_source_unref (worker->event_source);
+out:
+        return worker;
+}
+
+static void
+start_workers (GdmSmartcardManager *manager)
+{
+        GList        *node;
+
+        node = manager->priv->modules;
+        while (node != NULL) {
+                SECMODModule *module;
+                GdmSmartcardManagerWorker *worker;
+                GError *error;
+
+                module = (SECMODModule *) node->data;
+
+                error = NULL;
+                worker = start_worker (manager, module, &error);
+                if (worker == NULL) {
+                        g_warning ("%s", error->message);
+                        g_error_free (error);
+                } else {
+                        manager->priv->workers = g_list_prepend (manager->priv->workers,
+                                                                 worker);
+                }
+                node = node->next;
+        }
+}
+
+gboolean
+gdm_smartcard_manager_start (GdmSmartcardManager  *manager,
+                             GError              **error)
+{
+        GError *nss_error;
+
+        if (manager->priv->state == GDM_SMARTCARD_MANAGER_STATE_STARTED) {
+                g_debug ("smartcard manager already started");
+                return TRUE;
+        }
+
+        manager->priv->state = GDM_SMARTCARD_MANAGER_STATE_STARTING;
+
+        nss_error = NULL;
+        if (!manager->priv->nss_is_loaded && !sc_load_nss (&nss_error)) {
+                g_propagate_error (error, nss_error);
+                goto out;
+        }
+        manager->priv->nss_is_loaded = TRUE;
+
+        if (manager->priv->modules == NULL) {
+                if (!load_driver (manager, manager->priv->module_path, &nss_error)) {
+                        g_propagate_error (error, nss_error);
+                        goto out;
+                }
+        }
+
+        start_workers (manager);
+
+        /* populate the hash with cards that are already inserted
+         */
+        gdm_smartcard_manager_get_all_cards (manager);
+
+        manager->priv->state = GDM_SMARTCARD_MANAGER_STATE_STARTED;
+
+out:
+        /* don't leave it in a half started state
+         */
+        if (manager->priv->state != GDM_SMARTCARD_MANAGER_STATE_STARTED) {
+                g_debug ("smartcard manager could not be completely started");
+                gdm_smartcard_manager_stop (manager);
+        } else {
+                g_debug ("smartcard manager started");
+        }
+
+        return manager->priv->state == GDM_SMARTCARD_MANAGER_STATE_STARTED;
+}
+
+static gboolean
+gdm_smartcard_manager_stop_now (GdmSmartcardManager *manager)
+{
+        if (manager->priv->state == GDM_SMARTCARD_MANAGER_STATE_STOPPED) {
+                return FALSE;
+        }
+
+        gdm_smartcard_manager_stop_watching_for_events (manager);
+
+        return FALSE;
+}
+
+static void
+gdm_smartcard_manager_queue_stop (GdmSmartcardManager *manager)
+{
+
+        manager->priv->state = GDM_SMARTCARD_MANAGER_STATE_STOPPING;
+
+        g_idle_add ((GSourceFunc) gdm_smartcard_manager_stop_now, manager);
+}
+
+void
+gdm_smartcard_manager_stop (GdmSmartcardManager *manager)
+{
+        if (manager->priv->state == GDM_SMARTCARD_MANAGER_STATE_STOPPED) {
+                return;
+        }
+
+        if (manager->priv->is_unstoppable) {
+                gdm_smartcard_manager_queue_stop (manager);
+                return;
+        }
+
+        gdm_smartcard_manager_stop_now (manager);
+}
+
+static void
+gdm_smartcard_manager_check_for_login_card (CK_SLOT_ID    slot_id,
+                                            GdmSmartcard *card,
+                                            gboolean     *is_inserted)
+{
+        g_assert (is_inserted != NULL);
+
+        if (gdm_smartcard_is_login_card (card)) {
+                *is_inserted = TRUE;
+        }
+
+}
+
+gboolean
+gdm_smartcard_manager_login_card_is_inserted (GdmSmartcardManager *manager)
+
+{
+        gboolean is_inserted;
+
+        is_inserted = FALSE;
+        g_hash_table_foreach (manager->priv->smartcards,
+                              (GHFunc)
+                              gdm_smartcard_manager_check_for_login_card,
+                              &is_inserted);
+        return is_inserted;
+}
+
+static GdmSmartcardManagerWorker *
+gdm_smartcard_manager_worker_new (GdmSmartcardManager *manager,
+                                  gint                 worker_fd,
+                                  gint                 manager_fd,
+                                  SECMODModule        *module)
+{
+        GdmSmartcardManagerWorker *worker;
+
+        worker = g_slice_new0 (GdmSmartcardManagerWorker);
+        worker->manager = manager;
+        worker->fd = worker_fd;
+        worker->manager_fd = manager_fd;
+        worker->module = module;
+
+        worker->smartcards =
+                g_hash_table_new_full ((GHashFunc) sc_slot_id_hash,
+                                       (GEqualFunc) sc_slot_id_equal,
+                                       (GDestroyNotify) g_free,
+                                       (GDestroyNotify) g_object_unref);
+
+        return worker;
+}
+
+static void
+gdm_smartcard_manager_worker_free (GdmSmartcardManagerWorker *worker)
+{
+        if (worker->smartcards != NULL) {
+                g_hash_table_destroy (worker->smartcards);
+                worker->smartcards = NULL;
+        }
+
+        g_slice_free (GdmSmartcardManagerWorker, worker);
+}
+
+static gboolean
+sc_read_bytes (gint fd, gpointer bytes, gsize num_bytes)
+{
+        size_t bytes_left;
+        size_t total_bytes_read;
+        ssize_t bytes_read;
+
+        bytes_left = (size_t) num_bytes;
+        total_bytes_read = 0;
+
+        do {
+                bytes_read = read (fd, (gchar *) bytes + total_bytes_read, bytes_left);
+                g_assert (bytes_read <= (ssize_t) bytes_left);
+
+                if (bytes_read <= 0) {
+                        if ((bytes_read < 0) && (errno == EINTR || errno == EAGAIN)) {
+                                continue;
+                        }
+
+                        bytes_left = 0;
+                } else {
+                        bytes_left -= bytes_read;
+                        total_bytes_read += bytes_read;
+                }
+        } while (bytes_left > 0);
+
+        if (total_bytes_read <  (size_t) num_bytes) {
+                return FALSE;
+        }
+
+        return TRUE;
+}
+
+static gboolean
+sc_write_bytes (gint fd, gconstpointer bytes, gsize num_bytes)
+{
+        size_t bytes_left;
+        size_t total_bytes_written;
+        ssize_t bytes_written;
+
+        bytes_left = (size_t) num_bytes;
+        total_bytes_written = 0;
+
+        do {
+                bytes_written = write (fd, (gchar *) bytes + total_bytes_written, bytes_left);
+                g_assert (bytes_written <= (ssize_t) bytes_left);
+
+                if (bytes_written <= 0) {
+                        if ((bytes_written < 0) && (errno == EINTR || errno == EAGAIN)) {
+                                continue;
+                        }
+
+                        bytes_left = 0;
+                } else {
+                        bytes_left -= bytes_written;
+                        total_bytes_written += bytes_written;
+                }
+        } while (bytes_left > 0);
+
+        if (total_bytes_written <  (size_t) num_bytes) {
+                return FALSE;
+        }
+
+        return TRUE;
+}
+
+static GdmSmartcard *
+sc_read_smartcard (gint          fd,
+                   SECMODModule *module)
+{
+        GdmSmartcard *card;
+        char *card_name;
+        gsize card_name_size;
+
+        card_name_size = 0;
+        if (!sc_read_bytes (fd, &card_name_size, sizeof (card_name_size))) {
+                return NULL;
+        }
+
+        card_name = g_slice_alloc0 (card_name_size);
+        if (!sc_read_bytes (fd, card_name, card_name_size)) {
+                g_slice_free1 (card_name_size, card_name);
+                return NULL;
+        }
+        card = _gdm_smartcard_new_from_name (module, card_name);
+        g_slice_free1 (card_name_size, card_name);
+
+        return card;
+}
+
+static gboolean
+sc_write_smartcard (gint          fd,
+                    GdmSmartcard *card)
+{
+        gsize card_name_size;
+        char *card_name;
+
+        card_name = gdm_smartcard_get_name (card);
+        card_name_size = strlen (card_name) + 1;
+
+        if (!sc_write_bytes (fd, &card_name_size, sizeof (card_name_size))) {
+                g_free (card_name);
+                return FALSE;
+        }
+
+        if (!sc_write_bytes (fd, card_name, card_name_size)) {
+                g_free (card_name);
+                return FALSE;
+        }
+        g_free (card_name);
+
+        return TRUE;
+}
+
+static gboolean
+gdm_smartcard_manager_worker_emit_smartcard_removed (GdmSmartcardManagerWorker  *worker,
+                                                     GdmSmartcard               *card,
+                                                     GError                    **error)
+{
+        g_debug ("card '%s' removed!", gdm_smartcard_get_name (card));
+
+        if (!sc_write_bytes (worker->fd, "R", 1)) {
+                goto error_out;
+        }
+
+        if (!sc_write_smartcard (worker->fd, card)) {
+                goto error_out;
+        }
+
+        return TRUE;
+
+error_out:
+        g_set_error (error, GDM_SMARTCARD_MANAGER_ERROR,
+                     GDM_SMARTCARD_MANAGER_ERROR_REPORTING_EVENTS,
+                     "%s", g_strerror (errno));
+        return FALSE;
+}
+
+static gboolean
+gdm_smartcard_manager_worker_emit_smartcard_inserted (GdmSmartcardManagerWorker  *worker,
+                                                      GdmSmartcard               *card,
+                                                      GError                    **error)
+{
+        GError *write_error;
+
+        write_error = NULL;
+        g_debug ("card '%s' inserted!", gdm_smartcard_get_name (card));
+        if (!sc_write_bytes (worker->fd, "I", 1)) {
+                goto error_out;
+        }
+
+        if (!sc_write_smartcard (worker->fd, card)) {
+                goto error_out;
+        }
+
+        return TRUE;
+
+error_out:
+        g_set_error (error, GDM_SMARTCARD_MANAGER_ERROR,
+                     GDM_SMARTCARD_MANAGER_ERROR_REPORTING_EVENTS,
+                     "%s", g_strerror (errno));
+        return FALSE;
+}
+
+static gboolean
+gdm_smartcard_manager_worker_watch_for_and_process_event (GdmSmartcardManagerWorker  *worker,
+                                                          GError                    **error)
+{
+        PK11SlotInfo *slot;
+        CK_SLOT_ID slot_id, *key;
+        gint slot_series, card_slot_series;
+        GdmSmartcard *card;
+        GError *processing_error;
+
+        g_debug ("waiting for card event");
+
+        /* FIXME: we return FALSE quite a bit in this function without cleaning up
+         * resources.  By returning FALSE we're going to ultimately exit anyway, but
+         * we should still be tidier about things.
+         */
+
+        slot = SECMOD_WaitForAnyTokenEvent (worker->module, 0, PR_SecondsToInterval (1));
+
+        processing_error = NULL;
+
+        if (slot == NULL) {
+                int error_code;
+
+                error_code = PORT_GetError ();
+                if ((error_code == 0) || (error_code == SEC_ERROR_NO_EVENT)) {
+                        g_debug ("spurrious event occurred");
+                        return TRUE;
+                }
+
+                /* FIXME: is there a function to convert from a PORT error
+                 * code to a translated string?
+                 */
+                g_set_error (error, GDM_SMARTCARD_MANAGER_ERROR,
+                             GDM_SMARTCARD_MANAGER_ERROR_WITH_NSS,
+                             _("encountered unexpected error while "
+                               "waiting for smartcard events"));
+                return FALSE;
+        }
+
+        /* the slot id and series together uniquely identify a card.
+         * You can never have two cards with the same slot id at the
+         * same time, however (I think), so we can key off of it.
+         */
+        slot_id = PK11_GetSlotID (slot);
+        slot_series = PK11_GetSlotSeries (slot);
+
+        /* First check to see if there is a card that we're currently
+         * tracking in the slot.
+         */
+        key = g_new (CK_SLOT_ID, 1);
+        *key = slot_id;
+        card = g_hash_table_lookup (worker->smartcards, key);
+
+        if (card != NULL) {
+                card_slot_series = gdm_smartcard_get_slot_series (card);
+        } else {
+                card_slot_series = -1;
+        }
+
+        if (PK11_IsPresent (slot)) {
+                /* Now, check to see if their is a new card in the slot.
+                 * If there was a different card in the slot now than
+                 * there was before, then we need to emit a removed signal
+                 * for the old card (we don't want unpaired insertion events).
+                 */
+                if ((card != NULL) &&
+                    card_slot_series != slot_series) {
+                        if (!gdm_smartcard_manager_worker_emit_smartcard_removed (worker, card, &processing_error)) {
+                                g_propagate_error (error, processing_error);
+                                return FALSE;
+                        }
+                }
+
+                card = _gdm_smartcard_new (worker->module,
+                                           slot_id, slot_series);
+
+                g_hash_table_replace (worker->smartcards,
+                                      key, card);
+                key = NULL;
+
+                if (!gdm_smartcard_manager_worker_emit_smartcard_inserted (worker, card, &processing_error)) {
+                        g_propagate_error (error, processing_error);
+                        return FALSE;
+                }
+        } else {
+                /* if we aren't tracking the card, just discard the event.
+                 * We don't want unpaired remove events.  Note on startup
+                 * NSS will generate an "insertion" event if a card is
+                 * already inserted in the slot.
+                 */
+                if ((card != NULL)) {
+                        /* FIXME: i'm not sure about this code.  Maybe we
+                         * shouldn't do this at all, or maybe we should do it
+                         * n times (where n = slot_series - card_slot_series + 1)
+                         *
+                         * Right now, i'm just doing it once.
+                         */
+                        if ((slot_series - card_slot_series) > 1) {
+
+                                if (!gdm_smartcard_manager_worker_emit_smartcard_removed (worker, card, &processing_error)) {
+                                        g_propagate_error (error, processing_error);
+                                        return FALSE;
+                                }
+                                g_hash_table_remove (worker->smartcards, key);
+
+                                card = _gdm_smartcard_new (worker->module,
+                                                                slot_id, slot_series);
+                                g_hash_table_replace (worker->smartcards,
+                                                      key, card);
+                                key = NULL;
+                                if (!gdm_smartcard_manager_worker_emit_smartcard_inserted (worker, card, &processing_error)) {
+                                        g_propagate_error (error, processing_error);
+                                        return FALSE;
+                                }
+                        }
+
+                        if (!gdm_smartcard_manager_worker_emit_smartcard_removed (worker, card, &processing_error)) {
+                                g_propagate_error (error, processing_error);
+                                return FALSE;
+                        }
+
+                        g_hash_table_remove (worker->smartcards, key);
+                        card = NULL;
+                } else {
+                        g_debug ("got spurious remove event");
+                }
+        }
+
+        g_free (key);
+        PK11_FreeSlot (slot);
+
+        return TRUE;
+}
+
+static void
+gdm_smartcard_manager_worker_run (GdmSmartcardManagerWorker *worker)
+{
+        GError *error;
+        gboolean should_continue;
+
+        do
+        {
+                error = NULL;
+                should_continue = gdm_smartcard_manager_worker_watch_for_and_process_event (worker, &error);
+        }
+        while (should_continue);
+
+        if (error != NULL)  {
+                g_debug ("could not process card event - %s", error->message);
+                g_error_free (error);
+        }
+
+out:
+        gdm_smartcard_manager_worker_free (worker);
+}
+
+static GdmSmartcardManagerWorker *
+gdm_smartcard_manager_create_worker (GdmSmartcardManager  *manager,
+                                     SECMODModule         *module)
+{
+        GdmSmartcardManagerWorker *worker;
+        gint write_fd, read_fd;
+
+        write_fd = -1;
+        read_fd = -1;
+        if (!gdm_open_pipe (&write_fd, &read_fd)) {
+                return FALSE;
+        }
+
+        worker = gdm_smartcard_manager_worker_new (manager,
+                                                   write_fd,
+                                                   read_fd,
+                                                   module);
+
+        worker->thread = g_thread_create ((GThreadFunc)
+                                          gdm_smartcard_manager_worker_run,
+                                          worker, FALSE, NULL);
+
+        if (worker->thread == NULL) {
+                gdm_smartcard_manager_worker_free (worker);
+                return NULL;
+        }
+
+        return worker;
+}
+
+#ifdef GDM_SMARTCARD_MANAGER_ENABLE_TEST
+#include <glib.h>
+
+static GMainLoop *event_loop;
+static gboolean should_exit_on_next_remove = FALSE;
+
+static gboolean
+on_timeout (GdmSmartcardManager *manager)
+{
+        GError *error;
+        g_print ("Re-enabling manager.\n");
+
+        if (!gdm_smartcard_manager_start (manager, &error)) {
+                g_warning ("could not start smartcard manager - %s",
+                           error->message);
+                g_error_free (error);
+                return 1;
+        }
+        g_print ("Please re-insert smartcard\n");
+
+        should_exit_on_next_remove = TRUE;
+
+        return FALSE;
+}
+
+static void
+on_device_inserted (GdmSmartcardManager *manager,
+                    GdmSmartcard        *card)
+{
+        g_print ("smartcard inserted!\n");
+        g_print ("Please remove it.\n");
+}
+
+static void
+on_device_removed (GdmSmartcardManager *manager,
+                   GdmSmartcard        *card)
+{
+        g_print ("smartcard removed!\n");
+
+        if (should_exit_on_next_remove) {
+                g_main_loop_quit (event_loop);
+        } else {
+                g_print ("disabling manager for 2 seconds\n");
+                gdm_smartcard_manager_stop (manager);
+                g_timeout_add (2000, (GSourceFunc) on_timeout, manager);
+        }
+}
+
+int
+main (int   argc,
+      char *argv[])
+{
+        GdmSmartcardManager *manager;
+        GError *error;
+
+        g_log_set_always_fatal (G_LOG_LEVEL_ERROR
+                                | G_LOG_LEVEL_CRITICAL | G_LOG_LEVEL_WARNING);
+
+        g_type_init ();
+
+        g_message ("creating instance of 'smartcard manager' object...");
+        manager = gdm_smartcard_manager_new (NULL);
+        g_message ("'smartcard manager' object created successfully");
+
+        g_signal_connect (manager, "smartcard-inserted",
+                          G_CALLBACK (on_device_inserted), NULL);
+
+        g_signal_connect (manager, "smartcard-removed",
+                          G_CALLBACK (on_device_removed), NULL);
+
+        g_message ("starting listener...");
+
+        error = NULL;
+        if (!gdm_smartcard_manager_start (manager, &error)) {
+                g_warning ("could not start smartcard manager - %s",
+                           error->message);
+                g_error_free (error);
+                return 1;
+        }
+
+        event_loop = g_main_loop_new (NULL, FALSE);
+        g_main_loop_run (event_loop);
+        g_main_loop_unref (event_loop);
+        event_loop = NULL;
+
+        g_message ("destroying previously created 'smartcard manager' object...");
+        g_object_unref (manager);
+        manager = NULL;
+        g_message ("'smartcard manager' object destroyed successfully");
+
+        return 0;
+}
+#endif
diff --git a/gui/simple-greeter/plugins/smartcard/gdm-smartcard-manager.h b/gui/simple-greeter/plugins/smartcard/gdm-smartcard-manager.h
new file mode 100644
index 0000000..932a703
--- /dev/null
+++ b/gui/simple-greeter/plugins/smartcard/gdm-smartcard-manager.h
@@ -0,0 +1,86 @@
+/* gdm-smartcard-manager.h - object for monitoring smartcard insertion and
+ *                           removal events
+ *
+ * Copyright (C) 2006, 2009 Red Hat, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.
+ *
+ * Written by: Ray Strode
+ */
+#ifndef GDM_SMARTCARD_MANAGER_H
+#define GDM_SMARTCARD_MANAGER_H
+
+#define GDM_SMARTCARD_ENABLE_INTERNAL_API
+#include "gdm-smartcard.h"
+
+#include <glib.h>
+#include <glib-object.h>
+
+G_BEGIN_DECLS
+#define GDM_TYPE_SMARTCARD_MANAGER            (gdm_smartcard_manager_get_type ())
+#define GDM_SMARTCARD_MANAGER(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), GDM_TYPE_SMARTCARD_MANAGER, GdmSmartcardManager))
+#define GDM_SMARTCARD_MANAGER_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), GDM_TYPE_SMARTCARD_MANAGER, GdmSmartcardManagerClass))
+#define GDM_IS_SMARTCARD_MANAGER(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), SC_TYPE_SMARTCARD_MANAGER))
+#define GDM_IS_SMARTCARD_MANAGER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), SC_TYPE_SMARTCARD_MANAGER))
+#define GDM_SMARTCARD_MANAGER_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS((obj), GDM_TYPE_SMARTCARD_MANAGER, GdmSmartcardManagerClass))
+#define GDM_SMARTCARD_MANAGER_ERROR           (gdm_smartcard_manager_error_quark ())
+typedef struct _GdmSmartcardManager GdmSmartcardManager;
+typedef struct _GdmSmartcardManagerClass GdmSmartcardManagerClass;
+typedef struct _GdmSmartcardManagerPrivate GdmSmartcardManagerPrivate;
+typedef enum _GdmSmartcardManagerError GdmSmartcardManagerError;
+
+struct _GdmSmartcardManager {
+    GObject parent;
+
+    /*< private > */
+    GdmSmartcardManagerPrivate *priv;
+};
+
+struct _GdmSmartcardManagerClass {
+        GObjectClass parent_class;
+
+        /* Signals */
+        void (*smartcard_inserted) (GdmSmartcardManager *manager,
+                                    GdmSmartcard        *token);
+        void (*smartcard_removed) (GdmSmartcardManager *manager,
+                                   GdmSmartcard        *token);
+        void (*error) (GdmSmartcardManager *manager,
+                       GError              *error);
+};
+
+enum _GdmSmartcardManagerError {
+    GDM_SMARTCARD_MANAGER_ERROR_GENERIC = 0,
+    GDM_SMARTCARD_MANAGER_ERROR_WITH_NSS,
+    GDM_SMARTCARD_MANAGER_ERROR_LOADING_DRIVER,
+    GDM_SMARTCARD_MANAGER_ERROR_WATCHING_FOR_EVENTS,
+    GDM_SMARTCARD_MANAGER_ERROR_REPORTING_EVENTS
+};
+
+GType gdm_smartcard_manager_get_type (void) G_GNUC_CONST;
+GQuark gdm_smartcard_manager_error_quark (void) G_GNUC_CONST;
+
+GdmSmartcardManager *gdm_smartcard_manager_new (const char *module);
+
+gboolean gdm_smartcard_manager_start (GdmSmartcardManager  *manager,
+                                      GError              **error);
+
+void gdm_smartcard_manager_stop (GdmSmartcardManager *manager);
+
+char *gdm_smartcard_manager_get_module_path (GdmSmartcardManager *manager);
+gboolean gdm_smartcard_manager_login_token_is_inserted (GdmSmartcardManager *manager);
+
+G_END_DECLS
+#endif                                /* GDM_SMARTCARD_MANAGER_H */
diff --git a/gui/simple-greeter/plugins/smartcard/gdm-smartcard-worker.c b/gui/simple-greeter/plugins/smartcard/gdm-smartcard-worker.c
new file mode 100644
index 0000000..9af1346
--- /dev/null
+++ b/gui/simple-greeter/plugins/smartcard/gdm-smartcard-worker.c
@@ -0,0 +1,186 @@
+#include "config.h"
+
+#include <fcntl.h>
+#include <locale.h>
+#include <sys/prctl.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include <glib.h>
+
+#include "gdm-smartcard-manager.h"
+#include "gdm-smartcard.h"
+
+#ifndef GDM_SMARTCARDS_CONF
+#define GDM_SMARTCARDS_CONF GDMCONFDIR "/smartcards.conf"
+#endif
+
+#ifndef GDM_SMARTCARDS_GROUP
+#define GDM_SMARTCARDS_GROUP "Smartcards"
+#endif
+
+#ifndef GDM_SMARTCARDS_KEY_ENABLED
+#define GDM_SMARTCARDS_KEY_ENABLED "Enabled"
+#endif
+
+#ifndef GDM_SMARTCARDS_KEY_DRIVER
+#define GDM_SMARTCARDS_KEY_DRIVER "Driver"
+#endif
+
+static GMainLoop *event_loop;
+static GdmSmartcardManager *manager;
+static int signal_pipe_fds[2] = { -1, -1 };
+
+static void
+on_smartcard_event (const char *event_string)
+{
+        g_debug ("smartcard event '%s' happened", event_string);
+        g_print ("%s", event_string);
+        fflush (stdout);
+}
+
+static void
+watch_for_smartcards (void)
+{
+        GError *error;
+        char *driver;
+        GKeyFile *cfg;
+
+        cfg = g_key_file_new ();
+
+        error = NULL;
+        driver = NULL;
+        if (g_key_file_load_from_file (cfg, GDM_SMARTCARDS_CONF, G_KEY_FILE_NONE, &error)) {
+                if (!g_key_file_get_boolean (cfg, GDM_SMARTCARDS_GROUP, GDM_SMARTCARDS_KEY_ENABLED, &error)) {
+                        g_debug ("smartcard support is not enabled");
+                        goto out;
+                }
+
+                driver = g_key_file_get_string (cfg, GDM_SMARTCARDS_GROUP, GDM_SMARTCARDS_KEY_DRIVER, NULL);
+                g_debug ("smartcards driver is set to '%s'",
+                        driver == NULL || driver[0] == '\0'? "<automatic>" : driver);
+        }
+
+        g_debug ("watching for smartcard insertion and removal events");
+        manager = gdm_smartcard_manager_new (driver);
+        g_free (driver);
+
+        g_signal_connect_swapped (manager,
+                                  "smartcard-inserted",
+                                  G_CALLBACK (on_smartcard_event),
+                                  "I");
+
+        g_signal_connect_swapped (manager,
+                                  "smartcard-removed",
+                                  G_CALLBACK (on_smartcard_event),
+                                  "R");
+
+        error = NULL;
+        if (!gdm_smartcard_manager_start (manager, &error)) {
+            g_object_unref (manager);
+            manager = NULL;
+
+            if (error != NULL) {
+                    g_debug ("%s", error->message);
+                    g_error_free (error);
+            } else {
+                    g_debug ("could not start smartcard manager");
+
+            }
+            goto out;
+        }
+out:
+        g_key_file_free (cfg);
+}
+
+static void
+stop_watching_for_smartcards (void)
+{
+        if (manager != NULL) {
+                gdm_smartcard_manager_stop (manager);
+                g_object_unref (manager);
+                manager = NULL;
+        }
+}
+
+static void
+on_alrm_signal (int signal_number)
+{
+        raise (SIGKILL);
+}
+
+static void
+on_term_signal (int signal_number)
+{
+        close (signal_pipe_fds[1]);
+        signal_pipe_fds[1] = -1;
+
+        /* Give us 10 seconds to clean up orderly.
+         * If that fails, then the smartcard stack
+         * is hung up and we need to die hard
+         */
+        alarm (10);
+        signal (SIGALRM, on_alrm_signal);
+}
+
+static gboolean
+after_term_signal (GIOChannel   *io_channel,
+                   GIOCondition  condition,
+                   gpointer      data)
+{
+        g_main_loop_quit (event_loop);
+        return FALSE;
+}
+
+static void
+on_debug_message (const char     *log_domain,
+                  GLogLevelFlags  log_level,
+                  const char     *message,
+                  gpointer        user_data)
+{
+        g_printerr ("*** DEBUG: %s\n", message);
+}
+
+int
+main (int    argc,
+      char **argv)
+{
+        GIOChannel *io_channel;
+
+        setlocale (LC_ALL, "");
+
+        g_type_init ();
+
+        g_log_set_handler (NULL, G_LOG_LEVEL_DEBUG, on_debug_message, NULL);
+
+        event_loop = g_main_loop_new (NULL, FALSE);
+
+        watch_for_smartcards ();
+
+        if (pipe (signal_pipe_fds) != 0) {
+                return 1;
+        }
+        fcntl (signal_pipe_fds[0], F_SETFD, FD_CLOEXEC);
+        fcntl (signal_pipe_fds[1], F_SETFD, FD_CLOEXEC);
+
+        io_channel = g_io_channel_unix_new (signal_pipe_fds[0]);
+        g_io_channel_set_flags (io_channel, G_IO_FLAG_NONBLOCK, NULL);
+        g_io_channel_set_encoding (io_channel, NULL, NULL);
+        g_io_channel_set_buffered (io_channel, FALSE);
+        g_io_add_watch (io_channel, G_IO_HUP, after_term_signal, NULL);
+        g_io_channel_set_close_on_unref (io_channel, TRUE);
+        g_io_channel_unref (io_channel);
+
+        signal (SIGTERM, on_term_signal);
+        signal (SIGPIPE, on_term_signal);
+
+#ifdef HAVE_SYS_PRCTL_H
+        prctl (PR_SET_PDEATHSIG, SIGTERM);
+#endif
+
+        g_main_loop_run (event_loop);
+
+        stop_watching_for_smartcards ();
+
+        return 0;
+}
diff --git a/gui/simple-greeter/plugins/smartcard/gdm-smartcard.c b/gui/simple-greeter/plugins/smartcard/gdm-smartcard.c
new file mode 100644
index 0000000..1af3638
--- /dev/null
+++ b/gui/simple-greeter/plugins/smartcard/gdm-smartcard.c
@@ -0,0 +1,554 @@
+/* gdm-smartcard.c - smartcard object
+ *
+ * Copyright (C) 2006 Ray Strode <rstrode redhat com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.
+ */
+#define GDM_SMARTCARD_ENABLE_INTERNAL_API
+#include "gdm-smartcard.h"
+
+#include <errno.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <glib.h>
+#include <glib/gi18n.h>
+
+#include <cert.h>
+#include <nss.h>
+#include <pk11func.h>
+#include <prerror.h>
+#include <secmod.h>
+#include <secerr.h>
+
+struct _GdmSmartcardPrivate {
+        SECMODModule *module;
+        GdmSmartcardState state;
+
+        CK_SLOT_ID slot_id;
+        int slot_series;
+
+        PK11SlotInfo *slot;
+        char *name;
+
+        CERTCertificate *signing_certificate;
+        CERTCertificate *encryption_certificate;
+};
+
+static void gdm_smartcard_finalize (GObject *object);
+static void gdm_smartcard_class_install_signals (GdmSmartcardClass *card_class);
+static void gdm_smartcard_class_install_properties (GdmSmartcardClass *card_class);
+static void gdm_smartcard_set_property (GObject       *object,
+                                       guint          prop_id,
+                                       const GValue  *value,
+                                       GParamSpec    *pspec);
+static void gdm_smartcard_get_property (GObject     *object,
+                                       guint        prop_id,
+                                       GValue      *value,
+                                       GParamSpec  *pspec);
+static void gdm_smartcard_set_name (GdmSmartcard *card, const char *name);
+static void gdm_smartcard_set_slot_id (GdmSmartcard *card,
+                                      int                 slot_id);
+static void gdm_smartcard_set_slot_series (GdmSmartcard *card,
+                                          int          slot_series);
+static void gdm_smartcard_set_module (GdmSmartcard *card,
+                                     SECMODModule *module);
+
+static PK11SlotInfo *gdm_smartcard_find_slot_from_id (GdmSmartcard *card,
+                                                     int slot_id);
+
+static PK11SlotInfo *gdm_smartcard_find_slot_from_card_name (GdmSmartcard *card,
+                                                            const char  *card_name);
+static gboolean gdm_smartcard_fetch_certificates (GdmSmartcard *card);
+
+#ifndef GDM_SMARTCARD_DEFAULT_SLOT_ID
+#define GDM_SMARTCARD_DEFAULT_SLOT_ID ((gulong) -1)
+#endif
+
+#ifndef GDM_SMARTCARD_DEFAULT_SLOT_SERIES
+#define GDM_SMARTCARD_DEFAULT_SLOT_SERIES -1
+#endif
+
+enum {
+        PROP_0 = 0,
+        PROP_NAME,
+        PROP_SLOT_ID,
+        PROP_SLOT_SERIES,
+        PROP_MODULE,
+        NUMBER_OF_PROPERTIES
+};
+
+enum {
+        INSERTED,
+        REMOVED,
+        NUMBER_OF_SIGNALS
+};
+
+static guint gdm_smartcard_signals[NUMBER_OF_SIGNALS];
+
+G_DEFINE_TYPE (GdmSmartcard, gdm_smartcard, G_TYPE_OBJECT);
+
+static void
+gdm_smartcard_class_init (GdmSmartcardClass *card_class)
+{
+        GObjectClass *gobject_class;
+
+        gobject_class = G_OBJECT_CLASS (card_class);
+
+        gobject_class->finalize = gdm_smartcard_finalize;
+
+        gdm_smartcard_class_install_signals (card_class);
+        gdm_smartcard_class_install_properties (card_class);
+
+        g_type_class_add_private (card_class,
+                                  sizeof (GdmSmartcardPrivate));
+}
+
+static void
+gdm_smartcard_class_install_signals (GdmSmartcardClass *card_class)
+{
+        GObjectClass *object_class;
+
+        object_class = G_OBJECT_CLASS (card_class);
+
+        gdm_smartcard_signals[INSERTED] =
+                g_signal_new ("inserted",
+                          G_OBJECT_CLASS_TYPE (object_class),
+                          G_SIGNAL_RUN_LAST,
+                          G_STRUCT_OFFSET (GdmSmartcardClass,
+                                           inserted),
+                          NULL, NULL, g_cclosure_marshal_VOID__VOID,
+                          G_TYPE_NONE, 0);
+
+        gdm_smartcard_signals[REMOVED] =
+                g_signal_new ("removed",
+                          G_OBJECT_CLASS_TYPE (object_class),
+                          G_SIGNAL_RUN_LAST,
+                          G_STRUCT_OFFSET (GdmSmartcardClass,
+                                           removed),
+                          NULL, NULL, g_cclosure_marshal_VOID__VOID,
+                          G_TYPE_NONE, 0);
+}
+
+static void
+gdm_smartcard_class_install_properties (GdmSmartcardClass *card_class)
+{
+        GObjectClass *object_class;
+        GParamSpec *param_spec;
+
+        object_class = G_OBJECT_CLASS (card_class);
+        object_class->set_property = gdm_smartcard_set_property;
+        object_class->get_property = gdm_smartcard_get_property;
+
+        param_spec = g_param_spec_ulong ("slot-id", _("Slot ID"),
+                                   _("The slot the card is in"),
+                                   1, G_MAXULONG,
+                                   GDM_SMARTCARD_DEFAULT_SLOT_ID,
+                                   G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY);
+        g_object_class_install_property (object_class, PROP_SLOT_ID, param_spec);
+
+        param_spec = g_param_spec_int ("slot-series", _("Slot Series"),
+                                   _("per-slot card identifier"),
+                                   -1, G_MAXINT,
+                                   GDM_SMARTCARD_DEFAULT_SLOT_SERIES,
+                                   G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY);
+        g_object_class_install_property (object_class, PROP_SLOT_SERIES, param_spec);
+
+        param_spec = g_param_spec_string ("name", _("name"),
+                                      _("name"), NULL,
+                                      G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY);
+        g_object_class_install_property (object_class, PROP_NAME, param_spec);
+
+        param_spec = g_param_spec_pointer ("module", _("Module"),
+                                       _("smartcard driver"),
+                                       G_PARAM_WRITABLE | G_PARAM_CONSTRUCT_ONLY);
+        g_object_class_install_property (object_class, PROP_MODULE, param_spec);
+}
+
+static void
+gdm_smartcard_set_property (GObject       *object,
+                            guint          prop_id,
+                            const GValue  *value,
+                            GParamSpec    *pspec)
+{
+        GdmSmartcard *card = GDM_SMARTCARD (object);
+
+        switch (prop_id) {
+                case PROP_NAME:
+                        gdm_smartcard_set_name (card, g_value_get_string (value));
+                        break;
+
+                case PROP_SLOT_ID:
+                        gdm_smartcard_set_slot_id (card,
+                                                   g_value_get_ulong (value));
+                        break;
+
+                case PROP_SLOT_SERIES:
+                        gdm_smartcard_set_slot_series (card,
+                                                       g_value_get_int (value));
+                        break;
+
+                case PROP_MODULE:
+                        gdm_smartcard_set_module (card,
+                                                  (SECMODModule *)
+                                                  g_value_get_pointer (value));
+                        break;
+
+                default:
+                        G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+        }
+}
+
+CK_SLOT_ID
+gdm_smartcard_get_slot_id (GdmSmartcard *card)
+{
+        return card->priv->slot_id;
+}
+
+GdmSmartcardState
+gdm_smartcard_get_state (GdmSmartcard *card)
+{
+        return card->priv->state;
+}
+
+char *
+gdm_smartcard_get_name (GdmSmartcard *card)
+{
+        return g_strdup (card->priv->name);
+}
+
+gboolean
+gdm_smartcard_is_login_card (GdmSmartcard *card)
+{
+        const char *login_card_name;
+        login_card_name = g_getenv ("PKCS11_LOGIN_TOKEN_NAME");
+
+        if ((login_card_name == NULL) || (card->priv->name == NULL)) {
+                return FALSE;
+        }
+
+        if (strcmp (card->priv->name, login_card_name) == 0) {
+                return TRUE;
+        }
+
+        return FALSE;
+}
+
+static void
+gdm_smartcard_get_property (GObject    *object,
+                            guint        prop_id,
+                            GValue      *value,
+                            GParamSpec  *pspec)
+{
+        GdmSmartcard *card = GDM_SMARTCARD (object);
+
+        switch (prop_id) {
+                case PROP_NAME:
+                        g_value_take_string (value,
+                                             gdm_smartcard_get_name (card));
+                        break;
+
+                case PROP_SLOT_ID:
+                        g_value_set_ulong (value,
+                                           (gulong) gdm_smartcard_get_slot_id (card));
+                        break;
+
+                case PROP_SLOT_SERIES:
+                        g_value_set_int (value,
+                                         gdm_smartcard_get_slot_series (card));
+                        break;
+
+                default:
+                        G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+        }
+}
+
+static void
+gdm_smartcard_set_name (GdmSmartcard *card,
+                        const char   *name)
+{
+        if (name == NULL) {
+                return;
+        }
+
+        if ((card->priv->name == NULL) ||
+            (strcmp (card->priv->name, name) != 0)) {
+                g_free (card->priv->name);
+                card->priv->name = g_strdup (name);
+
+                if (card->priv->slot == NULL) {
+                        card->priv->slot = gdm_smartcard_find_slot_from_card_name (card,
+                                                                                     card->priv->name);
+
+                        if (card->priv->slot != NULL) {
+                                int slot_id, slot_series;
+
+                                slot_id = PK11_GetSlotID (card->priv->slot);
+                                if (slot_id != card->priv->slot_id) {
+                                        gdm_smartcard_set_slot_id (card, slot_id);
+                                }
+
+                                slot_series = PK11_GetSlotSeries (card->priv->slot);
+                                if (slot_series != card->priv->slot_series) {
+                                        gdm_smartcard_set_slot_series (card, slot_series);
+                                }
+
+                                _gdm_smartcard_set_state (card, GDM_SMARTCARD_STATE_INSERTED);
+                        } else {
+                                _gdm_smartcard_set_state (card, GDM_SMARTCARD_STATE_REMOVED);
+                        }
+                }
+
+                g_object_notify (G_OBJECT (card), "name");
+        }
+}
+
+static void
+gdm_smartcard_set_slot_id (GdmSmartcard *card,
+                           int           slot_id)
+{
+        if (card->priv->slot_id != slot_id) {
+                card->priv->slot_id = slot_id;
+
+                if (card->priv->slot == NULL) {
+                        card->priv->slot = gdm_smartcard_find_slot_from_id (card,
+                                                                             card->priv->slot_id);
+
+                        if (card->priv->slot != NULL) {
+                                const char *card_name;
+
+                                card_name = PK11_GetTokenName (card->priv->slot);
+                                if ((card->priv->name == NULL) ||
+                                    ((card_name != NULL) &&
+                                    (strcmp (card_name, card->priv->name) != 0))) {
+                                        gdm_smartcard_set_name (card, card_name);
+                                }
+
+                                _gdm_smartcard_set_state (card, GDM_SMARTCARD_STATE_INSERTED);
+                        } else {
+                                _gdm_smartcard_set_state (card, GDM_SMARTCARD_STATE_REMOVED);
+                        }
+                }
+
+                g_object_notify (G_OBJECT (card), "slot-id");
+        }
+}
+
+static void
+gdm_smartcard_set_slot_series (GdmSmartcard *card,
+                               int           slot_series)
+{
+        if (card->priv->slot_series != slot_series) {
+                card->priv->slot_series = slot_series;
+                g_object_notify (G_OBJECT (card), "slot-series");
+        }
+}
+
+static void
+gdm_smartcard_set_module (GdmSmartcard *card,
+                          SECMODModule *module)
+{
+        gboolean should_notify;
+
+        if (card->priv->module != module) {
+                should_notify = TRUE;
+        } else {
+                should_notify = FALSE;
+        }
+
+        if (card->priv->module != NULL) {
+                SECMOD_DestroyModule (card->priv->module);
+                card->priv->module = NULL;
+        }
+
+        if (module != NULL) {
+                card->priv->module = SECMOD_ReferenceModule (module);
+        }
+
+        if (should_notify) {
+                g_object_notify (G_OBJECT (card), "module");
+        }
+}
+
+int
+gdm_smartcard_get_slot_series (GdmSmartcard *card)
+{
+        return card->priv->slot_series;
+}
+
+static void
+gdm_smartcard_init (GdmSmartcard *card)
+{
+
+        g_debug ("initializing smartcard ");
+
+        card->priv = G_TYPE_INSTANCE_GET_PRIVATE (card,
+                                                  GDM_TYPE_SMARTCARD,
+                                                  GdmSmartcardPrivate);
+}
+
+static void gdm_smartcard_finalize (GObject *object)
+{
+        GdmSmartcard *card;
+        GObjectClass *gobject_class;
+
+        card = GDM_SMARTCARD (object);
+
+        g_free (card->priv->name);
+
+        gdm_smartcard_set_module (card, NULL);
+
+        gobject_class = G_OBJECT_CLASS (gdm_smartcard_parent_class);
+
+        gobject_class->finalize (object);
+}
+
+GQuark gdm_smartcard_error_quark (void)
+{
+        static GQuark error_quark = 0;
+
+        if (error_quark == 0) {
+                error_quark = g_quark_from_static_string ("gdm-smartcard-error-quark");
+        }
+
+        return error_quark;
+}
+
+GdmSmartcard *
+_gdm_smartcard_new (SECMODModule *module,
+                    CK_SLOT_ID    slot_id,
+                    int           slot_series)
+{
+        GdmSmartcard *card;
+
+        g_return_val_if_fail (module != NULL, NULL);
+        g_return_val_if_fail (slot_id >= 1, NULL);
+        g_return_val_if_fail (slot_series > 0, NULL);
+        g_return_val_if_fail (sizeof (gulong) == sizeof (slot_id), NULL);
+
+        card = GDM_SMARTCARD (g_object_new (GDM_TYPE_SMARTCARD,
+                                             "module", module,
+                                             "slot-id", (gulong) slot_id,
+                                             "slot-series", slot_series,
+                                             NULL));
+        return card;
+}
+
+GdmSmartcard *
+_gdm_smartcard_new_from_name (SECMODModule *module,
+                              const char   *name)
+{
+        GdmSmartcard *card;
+
+        g_return_val_if_fail (module != NULL, NULL);
+        g_return_val_if_fail (name != NULL, NULL);
+
+        card = GDM_SMARTCARD (g_object_new (GDM_TYPE_SMARTCARD,
+                                            "module", module,
+                                            "name", name,
+                                            NULL));
+        return card;
+}
+
+void
+_gdm_smartcard_set_state (GdmSmartcard      *card,
+                          GdmSmartcardState  state)
+{
+        /* gdm_smartcard_fetch_certificates (card); */
+        if (card->priv->state != state) {
+                card->priv->state = state;
+
+                if (state == GDM_SMARTCARD_STATE_INSERTED) {
+                        g_signal_emit (card, gdm_smartcard_signals[INSERTED], 0);
+                } else if (state == GDM_SMARTCARD_STATE_REMOVED) {
+                        g_signal_emit (card, gdm_smartcard_signals[REMOVED], 0);
+                } else {
+                        g_assert_not_reached ();
+                }
+        }
+}
+
+/* So we could conceivably make the closure data a pointer to the card
+ * or something similiar and then emit signals when we want passwords,
+ * but it's probably easier to just get the password up front and use
+ * it.  So we just take the passed in g_malloc'd (well probably, who knows)
+ * and strdup it using NSPR's memory allocation routines.
+ */
+static char *
+gdm_smartcard_password_handler (PK11SlotInfo *slot,
+                                PRBool        is_retrying,
+                                const char   *password)
+{
+        if (is_retrying) {
+                return NULL;
+        }
+
+        return password != NULL? PL_strdup (password): NULL;
+}
+
+gboolean
+gdm_smartcard_unlock (GdmSmartcard *card,
+                      const char   *password)
+{
+        SECStatus status;
+
+        PK11_SetPasswordFunc ((PK11PasswordFunc) gdm_smartcard_password_handler);
+
+        /* we pass PR_TRUE to load certificates
+        */
+        status = PK11_Authenticate (card->priv->slot, PR_TRUE, (gpointer) password);
+
+        if (status != SECSuccess) {
+                g_debug ("could not unlock card - %d", status);
+                return FALSE;
+        }
+        return TRUE;
+}
+
+static PK11SlotInfo *
+gdm_smartcard_find_slot_from_card_name (GdmSmartcard *card,
+                                        const char   *card_name)
+{
+        int i;
+
+        for (i = 0; i < card->priv->module->slotCount; i++) {
+                const char *slot_card_name;
+
+                slot_card_name = PK11_GetTokenName (card->priv->module->slots[i]);
+
+                if ((slot_card_name != NULL) &&
+                    (strcmp (slot_card_name, card_name) == 0)) {
+                        return card->priv->module->slots[i];
+                }
+        }
+
+        return NULL;
+}
+
+static PK11SlotInfo *
+gdm_smartcard_find_slot_from_id (GdmSmartcard *card,
+                                 int           slot_id)
+{
+        int i;
+
+        for (i = 0; i < card->priv->module->slotCount; i++) {
+                if (PK11_GetSlotID (card->priv->module->slots[i]) == slot_id) {
+                        return card->priv->module->slots[i];
+                }
+        }
+
+        return NULL;
+}
diff --git a/gui/simple-greeter/plugins/smartcard/gdm-smartcard.h b/gui/simple-greeter/plugins/smartcard/gdm-smartcard.h
new file mode 100644
index 0000000..20303bd
--- /dev/null
+++ b/gui/simple-greeter/plugins/smartcard/gdm-smartcard.h
@@ -0,0 +1,94 @@
+/* securitycard.h - api for reading and writing data to a security card
+ *
+ * Copyright (C) 2006 Ray Strode
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.
+ */
+#ifndef GDM_SMARTCARD_H
+#define GDM_SMARTCARD_H
+
+#include <glib.h>
+#include <glib-object.h>
+
+#include <secmod.h>
+
+G_BEGIN_DECLS
+#define GDM_TYPE_SMARTCARD            (gdm_smartcard_get_type ())
+#define GDM_SMARTCARD(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), GDM_TYPE_SMARTCARD, GdmSmartcard))
+#define GDM_SMARTCARD_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), GDM_TYPE_SMARTCARD, GdmSmartcardClass))
+#define GDM_IS_SMARTCARD(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GDM_TYPE_SMARTCARD))
+#define GDM_IS_SMARTCARD_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GDM_TYPE_SMARTCARD))
+#define GDM_SMARTCARD_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS((obj), GDM_TYPE_SMARTCARD, GdmSmartcardClass))
+#define GDM_SMARTCARD_ERROR           (gdm_smartcard_error_quark ())
+typedef struct _GdmSmartcardClass GdmSmartcardClass;
+typedef struct _GdmSmartcard GdmSmartcard;
+typedef struct _GdmSmartcardPrivate GdmSmartcardPrivate;
+typedef enum _GdmSmartcardError GdmSmartcardError;
+typedef enum _GdmSmartcardState GdmSmartcardState;
+
+typedef struct _GdmSmartcardRequest GdmSmartcardRequest;
+
+struct _GdmSmartcard {
+    GObject parent;
+
+    /*< private > */
+    GdmSmartcardPrivate *priv;
+};
+
+struct _GdmSmartcardClass {
+    GObjectClass parent_class;
+
+    void (* inserted) (GdmSmartcard *card);
+    void (* removed)  (GdmSmartcard *card);
+};
+
+enum _GdmSmartcardError {
+    GDM_SMARTCARD_ERROR_GENERIC = 0,
+};
+
+enum _GdmSmartcardState {
+    GDM_SMARTCARD_STATE_INSERTED = 0,
+    GDM_SMARTCARD_STATE_REMOVED,
+};
+
+GType gdm_smartcard_get_type (void) G_GNUC_CONST;
+GQuark gdm_smartcard_error_quark (void) G_GNUC_CONST;
+
+CK_SLOT_ID gdm_smartcard_get_slot_id (GdmSmartcard *card);
+gint gdm_smartcard_get_slot_series (GdmSmartcard *card);
+GdmSmartcardState gdm_smartcard_get_state (GdmSmartcard *card);
+
+char *gdm_smartcard_get_name (GdmSmartcard *card);
+gboolean gdm_smartcard_is_login_card (GdmSmartcard *card);
+
+gboolean gdm_smartcard_unlock (GdmSmartcard *card,
+                               const char   *password);
+
+/* don't under any circumstances call these functions */
+#ifdef GDM_SMARTCARD_ENABLE_INTERNAL_API
+
+GdmSmartcard *_gdm_smartcard_new (SECMODModule *module,
+                                  CK_SLOT_ID    slot_id,
+                                  gint          slot_series);
+GdmSmartcard *_gdm_smartcard_new_from_name (SECMODModule *module,
+                                            const char   *name);
+
+void _gdm_smartcard_set_state (GdmSmartcard      *card,
+                               GdmSmartcardState  state);
+#endif
+
+G_END_DECLS
+#endif                                /* GDM_SMARTCARD_H */
diff --git a/gui/simple-greeter/plugins/smartcard/gdm-smartcard.pam b/gui/simple-greeter/plugins/smartcard/gdm-smartcard.pam
new file mode 100644
index 0000000..d5ac1fa
--- /dev/null
+++ b/gui/simple-greeter/plugins/smartcard/gdm-smartcard.pam
@@ -0,0 +1,18 @@
+# Sample PAM file for doing smartcard authentication.
+# Distros should replace this with what makes sense for them.
+auth        required      pam_env.so
+auth        [success=done ignore=ignore default=die] pam_pkcs11.so wait_for_card card_only
+auth        requisite     pam_succeed_if.so uid >= 500 quiet
+auth        required      pam_deny.so
+
+account     required      pam_unix.so
+account     sufficient    pam_localuser.so
+account     sufficient    pam_succeed_if.so uid < 500 quiet
+account     required      pam_permit.so
+
+password    optional      pam_pkcs11.so
+password    requisite     pam_cracklib.so try_first_pass retry=3 type=
+
+session     optional      pam_keyinit.so revoke
+session     required      pam_limits.so
+session     required      pam_unix.so
diff --git a/gui/simple-greeter/plugins/smartcard/icons/16x16/Makefile.am b/gui/simple-greeter/plugins/smartcard/icons/16x16/Makefile.am
new file mode 100644
index 0000000..661d687
--- /dev/null
+++ b/gui/simple-greeter/plugins/smartcard/icons/16x16/Makefile.am
@@ -0,0 +1,5 @@
+iconsdir = $(datadir)/icons/hicolor/16x16/apps
+
+icons_DATA = gdm-smartcard.png
+
+EXTRA_DIST = $(icons_DATA)
diff --git a/gui/simple-greeter/plugins/smartcard/icons/16x16/gdm-smartcard.png b/gui/simple-greeter/plugins/smartcard/icons/16x16/gdm-smartcard.png
new file mode 100644
index 0000000..0112af1
Binary files /dev/null and b/gui/simple-greeter/plugins/smartcard/icons/16x16/gdm-smartcard.png differ
diff --git a/gui/simple-greeter/plugins/smartcard/icons/48x48/Makefile.am b/gui/simple-greeter/plugins/smartcard/icons/48x48/Makefile.am
new file mode 100644
index 0000000..e79d85b
--- /dev/null
+++ b/gui/simple-greeter/plugins/smartcard/icons/48x48/Makefile.am
@@ -0,0 +1,5 @@
+iconsdir = $(datadir)/icons/hicolor/48x48/apps
+
+icons_DATA = gdm-smartcard.png
+
+EXTRA_DIST = $(icons_DATA)
diff --git a/gui/simple-greeter/plugins/smartcard/icons/48x48/gdm-smartcard.png b/gui/simple-greeter/plugins/smartcard/icons/48x48/gdm-smartcard.png
new file mode 100644
index 0000000..35d5578
Binary files /dev/null and b/gui/simple-greeter/plugins/smartcard/icons/48x48/gdm-smartcard.png differ
diff --git a/gui/simple-greeter/plugins/smartcard/icons/Makefile.am b/gui/simple-greeter/plugins/smartcard/icons/Makefile.am
new file mode 100644
index 0000000..c20f10d
--- /dev/null
+++ b/gui/simple-greeter/plugins/smartcard/icons/Makefile.am
@@ -0,0 +1 @@
+SUBDIRS = 16x16 48x48
diff --git a/gui/simple-greeter/plugins/smartcard/page.ui b/gui/simple-greeter/plugins/smartcard/page.ui
new file mode 100644
index 0000000..8fa5c7b
--- /dev/null
+++ b/gui/simple-greeter/plugins/smartcard/page.ui
@@ -0,0 +1,57 @@
+<?xml version="1.0"?>
+<interface>
+  <requires lib="gtk+" version="2.14"/>
+    <object class="GtkVBox" id="page">
+      <property name="visible">True</property>
+      <property name="orientation">vertical</property>
+      <child>
+        <object class="GtkHBox" id="auth-input-box">
+          <property name="visible">True</property>
+          <property name="spacing">6</property>
+          <child>
+            <object class="GtkLabel" id="auth-prompt-label">
+              <property name="visible">True</property>
+            </object>
+            <packing>
+              <property name="expand">False</property>
+              <property name="fill">False</property>
+              <property name="position">0</property>
+            </packing>
+          </child>
+          <child>
+            <object class="GtkEntry" id="auth-prompt-entry">
+              <property name="visible">True</property>
+              <property name="can_focus">True</property>
+              <property name="activates_default">True</property>
+            </object>
+            <packing>
+              <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="GtkHBox" id="auth-message-box">
+          <property name="visible">True</property>
+          <child>
+            <object class="GtkLabel" id="auth-message-label">
+              <property name="visible">True</property>
+            </object>
+            <packing>
+              <property name="position">0</property>
+            </packing>
+          </child>
+        </object>
+        <packing>
+          <property name="expand">True</property>
+          <property name="fill">True</property>
+          <property name="position">1</property>
+        </packing>
+      </child>
+    </object>
+</interface>
diff --git a/gui/simple-greeter/plugins/smartcard/plugin.c b/gui/simple-greeter/plugins/smartcard/plugin.c
new file mode 100644
index 0000000..fffbd50
--- /dev/null
+++ b/gui/simple-greeter/plugins/smartcard/plugin.c
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2009 Red Hat, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * Written By: Ray Strode <rstrode redhat com>
+ *
+ */
+
+#include "gdm-smartcard-extension.h"
+
+#include <gio/gio.h>
+#include <gtk/gtk.h>
+
+GdmGreeterExtension *
+gdm_greeter_plugin_get_extension (void)
+{
+        static GObject *extension;
+
+        if (extension != NULL) {
+                g_object_ref (extension);
+        } else {
+                extension = g_object_new (GDM_TYPE_SMARTCARD_EXTENSION, NULL);
+                g_object_add_weak_pointer (extension, (gpointer *) &extension);
+        }
+
+        return GDM_GREETER_EXTENSION (extension);
+}
diff --git a/po/POTFILES.in b/po/POTFILES.in
index 3e0b163..69eb449 100644
--- a/po/POTFILES.in
+++ b/po/POTFILES.in
@@ -82,6 +82,9 @@ gui/simple-greeter/gdm-user-chooser-widget.c
 gui/simple-greeter/greeter-main.c
 gui/simple-greeter/plugins/password/gdm-password-extension.c
 gui/simple-greeter/plugins/fingerprint/gdm-fingerprint-extension.c
+gui/simple-greeter/plugins/smartcard/gdm-smartcard-extension.c
+gui/simple-greeter/plugins/smartcard/gdm-smartcard-manager.c
+gui/simple-greeter/plugins/smartcard/gdm-smartcard.c
 utils/gdmflexiserver.c
 utils/gdm-screenshot.c
 



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