pinentry-gtk-2.c
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	/* pinentry-gtk-2.c
	Copyright (C) 1999 Robert Bihlmeyer <robbe@orcus.priv.at>
	Copyright (C) 2001, 2002, 2007, 2015 g10 Code GmbH
	Copyright (C) 2004 by Albrecht Dreﾟ <albrecht.dress@arcor.de>

	pinentry-gtk-2 is a pinentry application for the Gtk+-2 widget set.
	It tries to follow the Gnome Human Interface Guide as close as
	possible.

	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., 675 Mass Ave, Cambridge, MA 02139, USA. */

	#ifdef HAVE_CONFIG_H
	#include "config.h"
	#endif
	#include <gdk/gdkkeysyms.h>
	#if __GNUC__ > 4 \|\| (__GNUC__ == 4 && __GNUC_MINOR__ >= 7 )
	# pragma GCC diagnostic push
	# pragma GCC diagnostic ignored "-Wstrict-prototypes"
	#endif
	#include <gtk/gtk.h>
	#if __GNUC__ > 4 \|\| (__GNUC__ == 4 && __GNUC_MINOR__ >= 7 )
	# pragma GCC diagnostic pop
	#endif
	#include <assert.h>
	#include <math.h>
	#include <stdio.h>
	#include <stdlib.h>
	#include <string.h>

	#ifdef HAVE_GETOPT_H
	#include <getopt.h>
	#else
	#include "getopt.h"
	#endif /* HAVE_GETOPT_H */

	#include "gtksecentry.h"
	#include "pinentry.h"

	#ifdef FALLBACK_CURSES
	#include "pinentry-curses.h"
	#endif


	#define PGMNAME "pinentry-gtk2"

	#ifndef VERSION
	# define VERSION
	#endif

	static pinentry_t pinentry;
	static int grab_failed;
	static int passphrase_ok;
	typedef enum { CONFIRM_CANCEL, CONFIRM_OK, CONFIRM_NOTOK } confirm_value_t;
	static confirm_value_t confirm_value;

	static GtkWidget *entry;
	static GtkWidget *repeat_entry;
	static GtkWidget *error_label;
	static GtkWidget *qualitybar;
	#ifdef ENABLE_ENHANCED
	static GtkWidget *insure;
	static GtkWidget *time_out;
	#endif
	static GtkTooltips *tooltips;
	static gboolean got_input;

	/* Gnome hig small and large space in pixels. */
	#define HIG_SMALL 6
	#define HIG_LARGE 12

	/* The text shown in the quality bar when no text is shown. This is not
	* the empty string, because with an empty string the height of
	* the quality bar is less than with a non-empty string. This results
	* in ugly layout changes when the text changes from non-empty to empty
	* and vice versa. */
	#define QUALITYBAR_EMPTY_TEXT " "


	/* Constrain size of the window the window should not shrink beyond
	the requisition, and should not grow vertically. */
	static void
	constrain_size (GtkWidget win, GtkRequisition req, gpointer data)
	{
	static gint width, height;
	GdkGeometry geo;

	if (req->width == width && req->height == height)
	return;
	width = req->width;
	height = req->height;
	geo.min_width = width;
	/* This limit is arbitrary, but INT_MAX breaks other things */
	geo.max_width = 10000;
	geo.min_height = geo.max_height = height;
	gtk_window_set_geometry_hints (GTK_WINDOW (win), NULL, &geo,
	GDK_HINT_MIN_SIZE \| GDK_HINT_MAX_SIZE);
	}


	/* Realize the window as transient if we grab the keyboard. This
	makes the window a modal dialog to the root window, which helps the
	window manager. See the following quote from:
	http://standards.freedesktop.org/wm-spec/wm-spec-1.4.html#id2512420

	Implementing enhanced support for application transient windows

	If the WM_TRANSIENT_FOR property is set to None or Root window, the
	window should be treated as a transient for all other windows in
	the same group. It has been noted that this is a slight ICCCM
	violation, but as this behavior is pretty standard for many
	toolkits and window managers, and is extremely unlikely to break
	anything, it seems reasonable to document it as standard. */

	static void
	make_transient (GtkWidget win, GdkEvent event, gpointer data)
	{
	GdkScreen *screen;
	GdkWindow *root;

	if (! pinentry->grab)
	return;

	/* Make window transient for the root window. */
	screen = gdk_screen_get_default ();
	root = gdk_screen_get_root_window (screen);
	gdk_window_set_transient_for (win->window, root);
	}


	/* Grab the keyboard for maximum security */
	static int
	grab_keyboard (GtkWidget win, GdkEvent event, gpointer data)
	{
	if (! pinentry->grab)
	return FALSE;

	if (gdk_keyboard_grab (win->window, FALSE, gdk_event_get_time (event)))
	{
	g_critical ("could not grab keyboard");
	grab_failed = 1;
	gtk_main_quit ();
	}
	return FALSE;
	}


	/* Remove grab. */
	static int
	ungrab_keyboard (GtkWidget win, GdkEvent event, gpointer data)
	{
	gdk_keyboard_ungrab (gdk_event_get_time (event));
	/* Unmake window transient for the root window. */
	/* gdk_window_set_transient_for cannot be used with parent = NULL to
	unset transient hint (unlike gtk_ version which can). Replacement
	code is taken from gtk_window_transient_parent_unrealized. */
	gdk_property_delete (win->window,
	gdk_atom_intern_static_string ("WM_TRANSIENT_FOR"));
	return FALSE;
	}


	static int
	delete_event (GtkWidget widget, GdkEvent event, gpointer data)
	{
	pinentry->close_button = 1;
	gtk_main_quit ();
	return TRUE;
	}


	static void
	button_clicked (GtkWidget *widget, gpointer data)
	{
	if (data)
	{
	const char s, s2;

	/* Okay button or enter used in text field. */
	#ifdef ENABLE_ENHANCED
	/* FIXME: This is not compatible with assuan. We can't just
	print stuff on stdout. */
	/* if (pinentry->enhanced) */
	/* printf ("Options: %s\nTimeout: %d\n\n", */
	/* gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (insure)) */
	/* ? "insure" : "", */
	/* gtk_spin_button_get_value_as_int (GTK_SPIN_BUTTON (time_out))); */
	#endif

	s = gtk_secure_entry_get_text (GTK_SECURE_ENTRY (entry));
	if (!s)
	s = "";

	if (pinentry->repeat_passphrase && repeat_entry)
	{
	s2 = gtk_secure_entry_get_text (GTK_SECURE_ENTRY (repeat_entry));
	if (!s2)
	s2 = "";
	if (strcmp (s, s2))
	{
	gtk_label_set_text (GTK_LABEL (error_label),
	pinentry->repeat_error_string?
	pinentry->repeat_error_string:
	"not correctly repeated");
	gtk_widget_grab_focus (entry);
	return; /* again */
	}
	pinentry->repeat_okay = 1;
	}

	passphrase_ok = 1;
	pinentry_setbufferlen (pinentry, strlen (s) + 1);
	if (pinentry->pin)
	strcpy (pinentry->pin, s);
	}
	gtk_main_quit ();
	}


	static void
	enter_callback (GtkWidget widget, GtkWidget anentry)
	{
	button_clicked (widget, (gpointer) CONFIRM_OK);
	}


	static void
	confirm_button_clicked (GtkWidget *widget, gpointer data)
	{
	confirm_value = (confirm_value_t) data;
	gtk_main_quit ();
	}


	static void
	cancel_callback (GtkAccelGroup acc, GObject accelerable,
	guint keyval, GdkModifierType modifier, gpointer data)
	{
	int confirm_mode = !!data;

	if (confirm_mode)
	confirm_button_clicked (GTK_WIDGET (accelerable),
	(gpointer)CONFIRM_CANCEL);
	else
	button_clicked (GTK_WIDGET (accelerable),
	(gpointer)CONFIRM_CANCEL);
	}



	static gchar *
	pinentry_utf8_validate (gchar *text)
	{
	gchar *result;

	if (!text)
	return NULL;

	if (g_utf8_validate (text, -1, NULL))
	return g_strdup (text);

	/* Failure: Assume that it was encoded in the current locale and
	convert it to utf-8. */
	result = g_locale_to_utf8 (text, -1, NULL, NULL, NULL);
	if (!result)
	{
	gchar *p;

	result = p = g_strdup (text);
	while (!g_utf8_validate (p, -1, (const gchar **) &p))
	*p = '?';
	}
	return result;
	}


	/* Handler called for "changed". We use it to update the quality
	indicator. */
	static void
	changed_text_handler (GtkWidget *widget)
	{
	char textbuf[50];
	const char *s;
	int length;
	int percent;
	GdkColor color = { 0, 0, 0, 0};

	got_input = TRUE;

	if (pinentry->repeat_passphrase && repeat_entry)
	{
	gtk_secure_entry_set_text (GTK_SECURE_ENTRY (repeat_entry), "");
	gtk_label_set_text (GTK_LABEL (error_label), "");
	}

	if (!qualitybar \|\| !pinentry->quality_bar)
	return;

	s = gtk_secure_entry_get_text (GTK_SECURE_ENTRY (widget));
	if (!s)
	s = "";
	length = strlen (s);
	percent = length? pinentry_inq_quality (pinentry, s, length) : 0;
	if (!length)
	{
	strcpy(textbuf, QUALITYBAR_EMPTY_TEXT);
	color.red = 0xffff;
	}
	else if (percent < 0)
	{
	snprintf (textbuf, sizeof textbuf, "(%d%%)", -percent);
	color.red = 0xffff;
	percent = -percent;
	}
	else
	{
	snprintf (textbuf, sizeof textbuf, "%d%%", percent);
	color.green = 0xffff;
	}
	gtk_progress_bar_set_fraction (GTK_PROGRESS_BAR (qualitybar),
	(double)percent/100.0);
	gtk_progress_bar_set_text (GTK_PROGRESS_BAR (qualitybar), textbuf);
	gtk_widget_modify_bg (qualitybar, GTK_STATE_PRELIGHT, &color);
	}


	#ifdef HAVE_LIBSECRET
	static void
	may_save_passphrase_toggled (GtkWidget *widget, gpointer data)
	{
	GtkToggleButton *button = GTK_TOGGLE_BUTTON (widget);
	pinentry_t ctx = (pinentry_t) data;

	ctx->may_cache_password = gtk_toggle_button_get_active (button);
	}
	#endif


	static gboolean
	timeout_cb (gpointer data)
	{
	(void)data;
	if (!got_input)
	gtk_main_quit ();
	return FALSE;
	}


	static GtkWidget *
	create_window (pinentry_t ctx, int confirm_mode)
	{
	GtkWidget *w;
	GtkWidget win, box;
	GtkWidget wvbox, chbox, *bbox;
	GtkAccelGroup *acc;
	GClosure *acc_cl;
	gchar *msg;

	tooltips = gtk_tooltips_new ();

	/* FIXME: check the grabbing code against the one we used with the
	old gpg-agent */
	win = gtk_window_new (GTK_WINDOW_TOPLEVEL);
	acc = gtk_accel_group_new ();

	g_signal_connect (G_OBJECT (win), "delete_event",
	G_CALLBACK (delete_event), NULL);

	#if 0
	g_signal_connect (G_OBJECT (win), "destroy", G_CALLBACK (gtk_main_quit),
	NULL);
	#endif
	g_signal_connect (G_OBJECT (win), "size-request",
	G_CALLBACK (constrain_size), NULL);
	if (!confirm_mode)
	{
	if (pinentry->grab)
	g_signal_connect (G_OBJECT (win),
	"realize", G_CALLBACK (make_transient), NULL);

	/* We need to grab the keyboard when its visible! not when its
	mapped (there is a difference) */
	g_object_set (G_OBJECT(win), "events",
	GDK_VISIBILITY_NOTIFY_MASK \| GDK_STRUCTURE_MASK, NULL);

	g_signal_connect (G_OBJECT (win),
	pinentry->grab
	? "visibility-notify-event"
	: "focus-in-event",
	G_CALLBACK (grab_keyboard), NULL);
	g_signal_connect (G_OBJECT (win),
	pinentry->grab ? "unmap-event" : "focus-out-event",
	G_CALLBACK (ungrab_keyboard), NULL);
	}
	gtk_window_add_accel_group (GTK_WINDOW (win), acc);

	wvbox = gtk_vbox_new (FALSE, HIG_LARGE * 2);
	gtk_container_add (GTK_CONTAINER (win), wvbox);
	gtk_container_set_border_width (GTK_CONTAINER (wvbox), HIG_LARGE);

	chbox = gtk_hbox_new (FALSE, HIG_LARGE);
	gtk_box_pack_start (GTK_BOX (wvbox), chbox, FALSE, FALSE, 0);

	w = gtk_image_new_from_stock (GTK_STOCK_DIALOG_AUTHENTICATION,
	GTK_ICON_SIZE_DIALOG);
	gtk_misc_set_alignment (GTK_MISC (w), 0.0, 0.0);
	gtk_box_pack_start (GTK_BOX (chbox), w, FALSE, FALSE, 0);

	box = gtk_vbox_new (FALSE, HIG_SMALL);
	gtk_box_pack_start (GTK_BOX (chbox), box, TRUE, TRUE, 0);

	if (pinentry->title)
	{
	msg = pinentry_utf8_validate (pinentry->title);
	gtk_window_set_title (GTK_WINDOW(win), msg);
	}
	if (pinentry->description)
	{
	msg = pinentry_utf8_validate (pinentry->description);
	w = gtk_label_new (msg);
	g_free (msg);
	gtk_misc_set_alignment (GTK_MISC (w), 0.0, 0.5);
	gtk_label_set_line_wrap (GTK_LABEL (w), TRUE);
	gtk_box_pack_start (GTK_BOX (box), w, TRUE, FALSE, 0);
	}
	if (!confirm_mode && (pinentry->error \|\| pinentry->repeat_passphrase))
	{
	/* With the repeat passphrase option we need to create the label
	in any case so that it may later be updated by the error
	message. */
	GdkColor color = { 0, 0xffff, 0, 0 };

	if (pinentry->error)
	msg = pinentry_utf8_validate (pinentry->error);
	else
	msg = "";
	error_label = gtk_label_new (msg);
	if (pinentry->error)
	g_free (msg);
	gtk_misc_set_alignment (GTK_MISC (error_label), 0.0, 0.5);
	gtk_label_set_line_wrap (GTK_LABEL (error_label), TRUE);
	gtk_box_pack_start (GTK_BOX (box), error_label, TRUE, FALSE, 0);
	gtk_widget_modify_fg (error_label, GTK_STATE_NORMAL, &color);
	}

	qualitybar = NULL;

	if (!confirm_mode)
	{
	int nrow;
	GtkWidget* table;

	nrow = 1;
	if (pinentry->quality_bar)
	nrow++;
	if (pinentry->repeat_passphrase)
	nrow++;

	table = gtk_table_new (nrow, 2, FALSE);
	nrow = 0;
	gtk_box_pack_start (GTK_BOX (box), table, FALSE, FALSE, 0);

	if (pinentry->prompt)
	{
	msg = pinentry_utf8_validate (pinentry->prompt);
	w = gtk_label_new_with_mnemonic (msg);
	g_free (msg);
	gtk_misc_set_alignment (GTK_MISC (w), 1.0, 0.5);
	gtk_table_attach (GTK_TABLE (table), w, 0, 1, nrow, nrow+1,
	GTK_FILL, GTK_FILL, 4, 0);
	}

	entry = gtk_secure_entry_new ();
	gtk_widget_set_size_request (entry, 200, -1);
	g_signal_connect (G_OBJECT (entry), "activate",
	G_CALLBACK (enter_callback), entry);
	g_signal_connect (G_OBJECT (entry), "changed",
	G_CALLBACK (changed_text_handler), entry);
	gtk_table_attach (GTK_TABLE (table), entry, 1, 2, nrow, nrow+1,
	GTK_EXPAND\|GTK_FILL, GTK_EXPAND\|GTK_FILL, 0, 0);
	gtk_widget_grab_focus (entry);
	gtk_widget_show (entry);
	nrow++;

	if (pinentry->quality_bar)
	{
	msg = pinentry_utf8_validate (pinentry->quality_bar);
	w = gtk_label_new (msg);
	g_free (msg);
	gtk_misc_set_alignment (GTK_MISC (w), 1.0, 0.5);
	gtk_table_attach (GTK_TABLE (table), w, 0, 1, nrow, nrow+1,
	GTK_FILL, GTK_FILL, 4, 0);
	qualitybar = gtk_progress_bar_new();
	gtk_widget_add_events (qualitybar,
	GDK_ENTER_NOTIFY_MASK \| GDK_LEAVE_NOTIFY_MASK);
	gtk_progress_bar_set_text (GTK_PROGRESS_BAR (qualitybar),
	QUALITYBAR_EMPTY_TEXT);
	gtk_progress_bar_set_fraction (GTK_PROGRESS_BAR (qualitybar), 0.0);
	if (pinentry->quality_bar_tt)
	gtk_tooltips_set_tip (GTK_TOOLTIPS (tooltips), qualitybar,
	pinentry->quality_bar_tt, "");
	gtk_table_attach (GTK_TABLE (table), qualitybar, 1, 2, nrow, nrow+1,
	GTK_EXPAND\|GTK_FILL, GTK_EXPAND\|GTK_FILL, 0, 0);
	nrow++;
	}


	if (pinentry->repeat_passphrase)
	{
	msg = pinentry_utf8_validate (pinentry->repeat_passphrase);
	w = gtk_label_new (msg);
	g_free (msg);
	gtk_misc_set_alignment (GTK_MISC (w), 1.0, 0.5);
	gtk_table_attach (GTK_TABLE (table), w, 0, 1, nrow, nrow+1,
	GTK_FILL, GTK_FILL, 4, 0);

	repeat_entry = gtk_secure_entry_new ();
	gtk_widget_set_size_request (repeat_entry, 200, -1);
	g_signal_connect (G_OBJECT (entry), "activate",
	G_CALLBACK (enter_callback), repeat_entry);
	gtk_table_attach (GTK_TABLE (table), repeat_entry, 1, 2, nrow, nrow+1,
	GTK_EXPAND\|GTK_FILL, GTK_EXPAND\|GTK_FILL, 0, 0);
	gtk_widget_grab_focus (entry);
	gtk_widget_show (entry);
	nrow++;
	}


	#ifdef ENABLE_ENHANCED
	if (pinentry->enhanced)
	{
	GtkWidget *sbox = gtk_hbox_new (FALSE, HIG_SMALL);
	gtk_box_pack_start (GTK_BOX (box), sbox, FALSE, FALSE, 0);

	w = gtk_label_new ("Forget secret after");
	gtk_box_pack_start (GTK_BOX (sbox), w, FALSE, FALSE, 0);
	gtk_widget_show (w);

	time_out = gtk_spin_button_new
	(GTK_ADJUSTMENT (gtk_adjustment_new (0, 0, HUGE_VAL, 1, 60, 60)),
	2, 0);
	gtk_box_pack_start (GTK_BOX (sbox), time_out, FALSE, FALSE, 0);
	gtk_widget_show (time_out);

	w = gtk_label_new ("seconds");
	gtk_box_pack_start (GTK_BOX (sbox), w, FALSE, FALSE, 0);
	gtk_widget_show (w);
	gtk_widget_show (sbox);

	insure = gtk_check_button_new_with_label ("ask before giving out "
	"secret");
	gtk_box_pack_start (GTK_BOX (box), insure, FALSE, FALSE, 0);
	gtk_widget_show (insure);
	}
	#endif
	}

	bbox = gtk_hbutton_box_new ();
	gtk_button_box_set_layout (GTK_BUTTON_BOX (bbox), GTK_BUTTONBOX_END);
	gtk_box_set_spacing (GTK_BOX (bbox), 6);
	gtk_box_pack_start (GTK_BOX (wvbox), bbox, TRUE, FALSE, 0);

	#ifdef HAVE_LIBSECRET
	if (ctx->allow_external_password_cache && ctx->keyinfo)
	/* Only show this if we can cache passwords and we have a stable
	key identifier. */
	{
	if (pinentry->default_pwmngr)
	{
	msg = pinentry_utf8_validate (pinentry->default_pwmngr);
	w = gtk_check_button_new_with_mnemonic (msg);
	g_free (msg);
	}
	else
	w = gtk_check_button_new_with_label ("Save passphrase using libsecret");

	gtk_box_pack_start (GTK_BOX (box), w, TRUE, FALSE, 0);
	gtk_widget_show (w);

	g_signal_connect (G_OBJECT (w), "toggled",
	G_CALLBACK (may_save_passphrase_toggled),
	(gpointer) ctx);
	}
	#endif

	if (!pinentry->one_button)
	{
	if (pinentry->cancel)
	{
	msg = pinentry_utf8_validate (pinentry->cancel);
	w = gtk_button_new_with_mnemonic (msg);
	g_free (msg);
	}
	else if (pinentry->default_cancel)
	{
	GtkWidget *image;

	msg = pinentry_utf8_validate (pinentry->default_cancel);
	w = gtk_button_new_with_mnemonic (msg);
	g_free (msg);
	image = gtk_image_new_from_stock (GTK_STOCK_CANCEL,
	GTK_ICON_SIZE_BUTTON);
	if (image)
	gtk_button_set_image (GTK_BUTTON (w), image);
	}
	else
	w = gtk_button_new_from_stock (GTK_STOCK_CANCEL);
	gtk_container_add (GTK_CONTAINER (bbox), w);
	g_signal_connect (G_OBJECT (w), "clicked",
	G_CALLBACK (confirm_mode ? confirm_button_clicked
	: button_clicked),
	(gpointer) CONFIRM_CANCEL);

	acc_cl = g_cclosure_new (G_CALLBACK (cancel_callback),
	(confirm_mode? "":NULL), NULL);
	gtk_accel_group_connect (acc, GDK_KEY_Escape, 0, 0, acc_cl);

	GTK_WIDGET_SET_FLAGS (w, GTK_CAN_DEFAULT);
	}

	if (confirm_mode && !pinentry->one_button && pinentry->notok)
	{
	msg = pinentry_utf8_validate (pinentry->notok);
	w = gtk_button_new_with_mnemonic (msg);
	g_free (msg);

	gtk_container_add (GTK_CONTAINER (bbox), w);
	g_signal_connect (G_OBJECT (w), "clicked",
	G_CALLBACK (confirm_button_clicked),
	(gpointer) CONFIRM_NOTOK);
	GTK_WIDGET_SET_FLAGS (w, GTK_CAN_DEFAULT);
	}

	if (pinentry->ok)
	{
	msg = pinentry_utf8_validate (pinentry->ok);
	w = gtk_button_new_with_mnemonic (msg);
	g_free (msg);
	}
	else if (pinentry->default_ok)
	{
	GtkWidget *image;

	msg = pinentry_utf8_validate (pinentry->default_ok);
	w = gtk_button_new_with_mnemonic (msg);
	g_free (msg);
	image = gtk_image_new_from_stock (GTK_STOCK_OK,
	GTK_ICON_SIZE_BUTTON);
	if (image)
	gtk_button_set_image (GTK_BUTTON (w), image);
	}
	else
	w = gtk_button_new_from_stock (GTK_STOCK_OK);
	gtk_container_add (GTK_CONTAINER(bbox), w);
	if (!confirm_mode)
	{
	g_signal_connect (G_OBJECT (w), "clicked",
	G_CALLBACK (button_clicked), "ok");
	GTK_WIDGET_SET_FLAGS (w, GTK_CAN_DEFAULT);
	gtk_widget_grab_default (w);
	g_signal_connect_object (G_OBJECT (entry), "focus_in_event",
	G_CALLBACK (gtk_widget_grab_default),
	G_OBJECT (w), 0);
	}
	else
	{
	g_signal_connect (G_OBJECT (w), "clicked",
	G_CALLBACK(confirm_button_clicked),
	(gpointer) CONFIRM_OK);
	GTK_WIDGET_SET_FLAGS (w, GTK_CAN_DEFAULT);
	}

	gtk_window_set_position (GTK_WINDOW (win), GTK_WIN_POS_CENTER);
	gtk_window_set_keep_above (GTK_WINDOW (win), TRUE);
	gtk_widget_show_all (win);
	gtk_window_present (GTK_WINDOW (win)); /* Make sure it has the focus. */

	if (pinentry->timeout > 0)
	g_timeout_add (pinentry->timeout*1000, timeout_cb, NULL);

	return win;
	}


	static int
	gtk_cmd_handler (pinentry_t pe)
	{
	GtkWidget *w;
	int want_pass = !!pe->pin;

	got_input = FALSE;
	pinentry = pe;
	confirm_value = CONFIRM_CANCEL;
	passphrase_ok = 0;
	w = create_window (pe, want_pass ? 0 : 1);
	gtk_main ();
	gtk_widget_destroy (w);
	while (gtk_events_pending ())
	gtk_main_iteration ();

	if (confirm_value == CONFIRM_CANCEL \|\| grab_failed)
	pe->canceled = 1;

	pinentry = NULL;
	if (want_pass)
	{
	if (passphrase_ok && pe->pin)
	return strlen (pe->pin);
	else
	return -1;
	}
	else
	return (confirm_value == CONFIRM_OK) ? 1 : 0;
	}


	pinentry_cmd_handler_t pinentry_cmd_handler = gtk_cmd_handler;


	int
	main (int argc, char *argv[])
	{
	static GMemVTable secure_mem =
	{
	secentry_malloc,
	secentry_realloc,
	secentry_free,
	NULL,
	NULL,
	NULL
	};

	g_mem_set_vtable (&secure_mem);

	pinentry_init (PGMNAME);

	#ifdef FALLBACK_CURSES
	if (pinentry_have_display (argc, argv))
	gtk_init (&argc, &argv);
	else
	pinentry_cmd_handler = curses_cmd_handler;
	#else
	gtk_init (&argc, &argv);
	#endif

	pinentry_parse_opts (argc, argv);

	if (pinentry_loop ())
	return 1;

	return 0;
	}

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