356 lines
10 KiB
C
356 lines
10 KiB
C
/* passphrase.c - GTK+ based passphrase callback
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* Copyright (C) 2001 Werner Koch (dd9jn)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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#if USE_GPGME
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#include <glib.h>
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#include <glib/gi18n.h>
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#include <gdk/gdktypes.h>
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#include <gdk/gdkkeysyms.h>
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#include <gdk/gdkdisplay.h>
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#ifdef GDK_WINDOWING_X11
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# include <gdk/gdkx.h>
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#endif /* GDK_WINDOWING_X11 */
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#include <gtk/gtkmain.h>
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#include <gtk/gtkwidget.h>
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#include <gtk/gtkwindow.h>
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#include <gtk/gtkvbox.h>
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#include <gtk/gtktable.h>
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#include <gtk/gtklabel.h>
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#include <gtk/gtkentry.h>
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#include <gtk/gtkhbbox.h>
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#include <gtk/gtkbutton.h>
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#include <gtk/gtkfilesel.h>
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#include <gtk/gtksignal.h>
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#include <string.h>
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#include <sys/types.h>
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#ifdef G_OS_WIN32
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#include <windows.h>
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#else
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#include <sys/mman.h>
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#endif
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#include "passphrase.h"
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#include "prefs_common.h"
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#include "prefs_gpg.h"
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#include "manage_window.h"
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#include "utils.h"
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#include "mainwindow.h"
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#include "summaryview.h"
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static gboolean grab_all = FALSE;
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static gboolean pass_ack;
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static gchar *last_pass = NULL;
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static void passphrase_ok_cb(GtkWidget *widget, gpointer data);
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static void passphrase_cancel_cb(GtkWidget *widget, gpointer data);
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static gint passphrase_deleted(GtkWidget *widget, GdkEventAny *event,
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gpointer data);
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static gboolean passphrase_key_pressed(GtkWidget *widget, GdkEventKey *event,
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gpointer data);
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static gchar* passphrase_mbox(const gchar *uid_hint, const gchar *pass_hint,
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gint prev_bad);
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static GtkWidget *create_description(const gchar *uid_hint,
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const gchar *pass_hint, gint prev_bad);
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void
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gpgmegtk_set_passphrase_grab(gint yes)
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{
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grab_all = yes;
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}
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static gchar*
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passphrase_mbox(const gchar *uid_hint, const gchar *pass_hint, gint prev_bad)
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{
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gchar *the_passphrase = NULL;
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GtkWidget *vbox, *hbox;
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GtkWidget *confirm_box;
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GtkWidget *window;
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GtkWidget *pass_entry;
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GtkWidget *ok_button;
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GtkWidget *cancel_button;
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SummaryView *summaryview = mainwindow_get_mainwindow()->summaryview;
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gtk_menu_popdown(GTK_MENU(summaryview->popupmenu));
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window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
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gtk_window_set_title(GTK_WINDOW(window), _("Passphrase"));
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gtk_widget_set_size_request(window, 450, -1);
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gtk_window_set_position(GTK_WINDOW(window), GTK_WIN_POS_CENTER);
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gtk_window_set_modal(GTK_WINDOW(window), TRUE);
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gtk_window_set_policy(GTK_WINDOW(window), FALSE, FALSE, FALSE);
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g_signal_connect(G_OBJECT(window), "delete_event",
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G_CALLBACK(passphrase_deleted), NULL);
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g_signal_connect(G_OBJECT(window), "key_press_event",
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G_CALLBACK(passphrase_key_pressed), NULL);
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MANAGE_WINDOW_SIGNALS_CONNECT(window);
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manage_window_set_transient(GTK_WINDOW(window));
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vbox = gtk_vbox_new(FALSE, 8);
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gtk_container_add(GTK_CONTAINER(window), vbox);
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gtk_container_set_border_width(GTK_CONTAINER(vbox), 8);
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if (uid_hint || pass_hint) {
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GtkWidget *label, *icon;
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label = create_description (uid_hint, pass_hint, prev_bad);
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icon = gtk_image_new_from_stock(GTK_STOCK_DIALOG_AUTHENTICATION,
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GTK_ICON_SIZE_DIALOG);
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hbox = gtk_hbox_new (FALSE, 12);
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gtk_container_set_border_width (GTK_CONTAINER (hbox), 5);
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gtk_widget_show (hbox);
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gtk_box_pack_start (GTK_BOX(hbox), icon, FALSE, FALSE, 0);
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gtk_box_pack_start (GTK_BOX(hbox), label, FALSE, FALSE, 0);
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gtk_box_pack_start (GTK_BOX(vbox), hbox, FALSE, FALSE, 0);
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}
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pass_entry = gtk_entry_new();
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gtk_box_pack_start(GTK_BOX(vbox), pass_entry, FALSE, FALSE, 0);
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gtk_entry_set_visibility(GTK_ENTRY(pass_entry), FALSE);
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gtk_widget_grab_focus(pass_entry);
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gtkut_stock_button_set_create(&confirm_box, &ok_button, GTK_STOCK_OK,
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&cancel_button, GTK_STOCK_CANCEL,
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NULL, NULL);
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gtk_box_pack_end(GTK_BOX(vbox), confirm_box, FALSE, FALSE, 0);
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gtk_widget_grab_default(ok_button);
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g_signal_connect(G_OBJECT(ok_button), "clicked",
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G_CALLBACK(passphrase_ok_cb), NULL);
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g_signal_connect(G_OBJECT(pass_entry), "activate",
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G_CALLBACK(passphrase_ok_cb), NULL);
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g_signal_connect(G_OBJECT(cancel_button), "clicked",
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G_CALLBACK(passphrase_cancel_cb), NULL);
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gtk_window_set_position (GTK_WINDOW(window), GTK_WIN_POS_CENTER);
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if (grab_all)
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gtk_window_set_policy (GTK_WINDOW(window), FALSE, FALSE, TRUE);
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gtk_widget_show_all(window);
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if (grab_all) {
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int err = 0, cnt = 0;
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/* make sure that window is viewable */
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gtk_widget_show_now(window);
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gdk_window_process_updates(window->window, TRUE);
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gdk_flush();
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while(gtk_events_pending()) {
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gtk_main_iteration();
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}
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try_again:
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if ((err = gdk_pointer_grab(window->window, TRUE, 0,
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window->window, NULL, GDK_CURRENT_TIME))) {
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if (err == GDK_GRAB_NOT_VIEWABLE && cnt < 10) {
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cnt++;
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g_warning("trying to grab mouse again\n");
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gtk_main_iteration();
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goto try_again;
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} else {
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g_warning("OOPS: Could not grab mouse\n");
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gtk_widget_destroy(window);
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return NULL;
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}
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}
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if (gdk_keyboard_grab(window->window, FALSE, GDK_CURRENT_TIME)) {
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gdk_display_pointer_ungrab(gdk_display_get_default(),
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GDK_CURRENT_TIME);
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g_warning("OOPS: Could not grab keyboard\n");
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gtk_widget_destroy(window);
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return NULL;
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}
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}
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gtk_main();
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if (grab_all) {
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gdk_display_keyboard_ungrab(gdk_display_get_default(),
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GDK_CURRENT_TIME);
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gdk_display_pointer_ungrab(gdk_display_get_default(), GDK_CURRENT_TIME);
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gdk_flush();
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}
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manage_window_focus_out(window, NULL, NULL);
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if (pass_ack) {
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const gchar *entry_text;
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entry_text = gtk_entry_get_text(GTK_ENTRY(pass_entry));
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if (entry_text) /* Hmmm: Do we really need this? */
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the_passphrase = g_strdup (entry_text);
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}
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gtk_widget_destroy (window);
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return the_passphrase;
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}
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static void
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passphrase_ok_cb(GtkWidget *widget, gpointer data)
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{
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pass_ack = TRUE;
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gtk_main_quit();
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}
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static void
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passphrase_cancel_cb(GtkWidget *widget, gpointer data)
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{
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pass_ack = FALSE;
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gtk_main_quit();
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}
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static gint
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passphrase_deleted(GtkWidget *widget, GdkEventAny *event, gpointer data)
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{
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passphrase_cancel_cb(NULL, NULL);
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return TRUE;
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}
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static gboolean
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passphrase_key_pressed(GtkWidget *widget, GdkEventKey *event, gpointer data)
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{
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if (event && event->keyval == GDK_Escape)
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passphrase_cancel_cb(NULL, NULL);
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return FALSE;
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}
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static gint
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linelen (const gchar *s)
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{
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gint i;
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for (i = 0; *s && *s != '\n'; s++, i++)
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;
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return i;
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}
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static GtkWidget *
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create_description(const gchar *uid_hint, const gchar *pass_hint, gint prev_bad)
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{
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const gchar *uid = NULL, *info = NULL;
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gchar *buf;
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GtkWidget *label;
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gchar *my_uid = NULL;
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if (!uid_hint)
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uid = _("[no user id]");
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else
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uid = uid_hint;
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if (!pass_hint)
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info = "";
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else
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info = pass_hint;
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my_uid = g_strdup(uid);
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while (strchr(my_uid, '<'))
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*(strchr(my_uid, '<')) = '(';
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while (strchr(my_uid, '>'))
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*(strchr(my_uid, '>')) = ')';
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buf = g_strdup_printf (_("<span weight=\"bold\" size=\"larger\">%sPlease enter the passphrase for:</span>\n\n"
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"%.*s\n"),
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prev_bad ?
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_("Bad passphrase.\n") : "",
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linelen (my_uid), my_uid);
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g_free(my_uid);
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label = gtk_label_new (buf);
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gtk_label_set_use_markup(GTK_LABEL (label), TRUE);
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gtk_label_set_justify (GTK_LABEL (label), GTK_JUSTIFY_LEFT);
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gtk_label_set_line_wrap(GTK_LABEL (label), TRUE);
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g_free (buf);
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return label;
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}
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static int free_passphrase(gpointer _unused)
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{
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if (last_pass != NULL) {
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#ifndef G_OS_WIN32
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munlock(last_pass, strlen(last_pass));
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#endif
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g_free(last_pass);
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last_pass = NULL;
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debug_print("%% passphrase removed");
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}
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return FALSE;
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}
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gpgme_error_t
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gpgmegtk_passphrase_cb(void *opaque, const char *uid_hint,
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const char *passphrase_hint, int prev_bad, int fd)
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{
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const char *pass;
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if (prefs_gpg_get_config()->store_passphrase && last_pass && !prev_bad)
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pass = last_pass;
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else {
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gpgmegtk_set_passphrase_grab (prefs_gpg_get_config()->passphrase_grab);
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debug_print ("%% requesting passphrase for '%s': ", uid_hint);
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pass = passphrase_mbox (uid_hint, passphrase_hint, prev_bad);
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gpgmegtk_free_passphrase();
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if (!pass) {
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debug_print ("%% cancel passphrase entry");
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write(fd, "\n", 1);
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return GPG_ERR_CANCELED;
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}
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else {
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if (prefs_gpg_get_config()->store_passphrase) {
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last_pass = g_strdup(pass);
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#ifndef G_OS_WIN32
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if (mlock(last_pass, strlen(last_pass)) == -1)
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debug_print("%% locking passphrase failed");
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#endif
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if (prefs_gpg_get_config()->store_passphrase_timeout > 0) {
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gtk_timeout_add(prefs_gpg_get_config()
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->store_passphrase_timeout*60*1000,
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free_passphrase, NULL);
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}
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}
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debug_print ("%% sending passphrase");
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}
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}
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#ifdef G_OS_WIN32
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{
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/* Under Windows FD is actually a System handle. */
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DWORD nwritten;
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WriteFile ((HANDLE)fd, pass, strlen (pass), &nwritten, NULL);
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WriteFile ((HANDLE)fd, "\n", 1, &nwritten, NULL);
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}
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#else
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write(fd, pass, strlen(pass));
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write(fd, "\n", 1);
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#endif
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return GPG_ERR_NO_ERROR;
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}
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void gpgmegtk_free_passphrase()
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{
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(void)free_passphrase(NULL); /* could be inline */
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}
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#endif /* USE_GPGME */
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