1 files changed, 354 insertions, 0 deletions

diff --git a/src/passphrase.c b/src/passphrase.c
new file mode 100644
index 0000000..20447c1
--- /dev/null
+++ b/src/passphrase.c
@@ -0,0 +1,354 @@
+/* passphrase.c - GTK+ based passphrase callback
+ *      Copyright (C) 2001 Werner Koch (dd9jn)
+ *
+ * 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.
+ */
+
+#ifdef HAVE_CONFIG_H
+#  include <config.h>
+#endif
+
+#if USE_GPGME
+
+#include <glib.h>
+#include <glib/gi18n.h>
+#include <gdk/gdktypes.h>
+#include <gdk/gdkkeysyms.h>
+#include <gdk/gdkdisplay.h>
+#ifdef GDK_WINDOWING_X11
+#  include <gdk/gdkx.h>
+#endif /* GDK_WINDOWING_X11 */
+#include <gtk/gtkmain.h>
+#include <gtk/gtkwidget.h>
+#include <gtk/gtkwindow.h>
+#include <gtk/gtkvbox.h>
+#include <gtk/gtktable.h>
+#include <gtk/gtklabel.h>
+#include <gtk/gtkentry.h>
+#include <gtk/gtkhbbox.h>
+#include <gtk/gtkbutton.h>
+#include <gtk/gtksignal.h>
+#include <gtk/gtkstock.h>
+#include <string.h>
+#include <sys/types.h>
+#if HAVE_SYS_MMAN_H
+#  include <sys/mman.h>
+#endif
+
+#ifdef G_OS_WIN32
+#  include <windows.h>
+#endif
+
+#include "passphrase.h"
+#include "prefs_common.h"
+#include "manage_window.h"
+#include "utils.h"
+#include "gtkutils.h"
+
+static gboolean grab_all = FALSE;
+
+static gboolean pass_ack;
+static gchar *last_pass = NULL;
+
+static void passphrase_ok_cb(GtkWidget *widget, gpointer data);
+static void passphrase_cancel_cb(GtkWidget *widget, gpointer data);
+static gint passphrase_deleted(GtkWidget *widget, GdkEventAny *event,
+                               gpointer data);
+static gboolean passphrase_key_pressed(GtkWidget *widget, GdkEventKey *event,
+                                       gpointer data);
+static gchar* passphrase_mbox(const gchar *uid_hint, const gchar *pass_hint,
+                              gint prev_bad);
+
+static GtkWidget *create_description(const gchar *uid_hint,
+                                     const gchar *pass_hint, gint prev_bad);
+
+void
+gpgmegtk_set_passphrase_grab(gint yes)
+{
+    grab_all = yes;
+}
+
+static gchar*
+passphrase_mbox(const gchar *uid_hint, const gchar *pass_hint, gint prev_bad)
+{
+    gchar *the_passphrase = NULL;
+    GtkWidget *vbox;
+    GtkWidget *confirm_box;
+    GtkWidget *window;
+    GtkWidget *pass_entry;
+    GtkWidget *ok_button;
+    GtkWidget *cancel_button;
+
+    window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
+    gtk_window_set_title(GTK_WINDOW(window), _("Passphrase"));
+    gtk_widget_set_size_request(window, 450, -1);
+    gtk_window_set_position(GTK_WINDOW(window), GTK_WIN_POS_CENTER);
+    gtk_window_set_modal(GTK_WINDOW(window), TRUE);
+    gtk_window_set_policy(GTK_WINDOW(window), FALSE, FALSE, FALSE);
+    g_signal_connect(G_OBJECT(window), "delete_event",
+                     G_CALLBACK(passphrase_deleted), NULL);
+    g_signal_connect(G_OBJECT(window), "key_press_event",
+                     G_CALLBACK(passphrase_key_pressed), NULL);
+    MANAGE_WINDOW_SIGNALS_CONNECT(window);
+    manage_window_set_transient(GTK_WINDOW(window));
+
+    vbox = gtk_vbox_new(FALSE, 8);
+    gtk_container_add(GTK_CONTAINER(window), vbox);
+    gtk_container_set_border_width(GTK_CONTAINER(vbox), 8);
+
+    if (uid_hint || pass_hint) {
+        GtkWidget *label;
+        label = create_description (uid_hint, pass_hint, prev_bad);
+        gtk_box_pack_start (GTK_BOX(vbox), label, FALSE, FALSE, 0);
+    }
+
+    pass_entry = gtk_entry_new();
+    gtk_box_pack_start(GTK_BOX(vbox), pass_entry, FALSE, FALSE, 0);
+    gtk_entry_set_visibility(GTK_ENTRY(pass_entry), FALSE);
+    gtk_widget_grab_focus(pass_entry);
+
+    gtkut_stock_button_set_create(&confirm_box, &ok_button, GTK_STOCK_OK,
+                                  &cancel_button, GTK_STOCK_CANCEL,
+                                  NULL, NULL);
+    gtk_box_pack_end(GTK_BOX(vbox), confirm_box, FALSE, FALSE, 0);
+    gtk_widget_grab_default(ok_button);
+
+    g_signal_connect(G_OBJECT(ok_button), "clicked",
+                     G_CALLBACK(passphrase_ok_cb), NULL);
+    g_signal_connect(G_OBJECT(pass_entry), "activate",
+                     G_CALLBACK(passphrase_ok_cb), NULL);
+    g_signal_connect(G_OBJECT(cancel_button), "clicked",
+                     G_CALLBACK(passphrase_cancel_cb), NULL);
+
+    gtk_window_set_position (GTK_WINDOW(window), GTK_WIN_POS_CENTER);
+    if (grab_all)   
+        gtk_window_set_policy (GTK_WINDOW(window), FALSE, FALSE, TRUE);
+    
+    gtk_widget_show_all(window);
+
+    if (grab_all) {
+        /* make sure that window is viewable
+         * FIXME: this is still not enough */
+        gtk_widget_show_now(window);
+        gdk_flush();
+#ifdef GDK_WINDOWING_X11
+        gdk_x11_display_grab(gdk_display_get_default());
+#endif /* GDK_WINDOWING_X11 */
+        if (gdk_pointer_grab(window->window, TRUE, 0,
+                             window->window, NULL, GDK_CURRENT_TIME)) {
+#ifdef GDK_WINDOWING_X11
+            gdk_x11_display_ungrab(gdk_display_get_default());
+#endif /* GDK_WINDOWING_X11 */
+            g_warning("OOPS: Could not grab mouse\n");
+            gtk_widget_destroy(window);
+            return NULL;
+        }
+        if (gdk_keyboard_grab(window->window, FALSE, GDK_CURRENT_TIME)) {
+            gdk_display_pointer_ungrab(gdk_display_get_default(),
+                                       GDK_CURRENT_TIME);
+#ifdef GDK_WINDOWING_X11
+            gdk_x11_display_ungrab(gdk_display_get_default());
+#endif /* GDK_WINDOWING_X11 */
+            g_warning("OOPS: Could not grab keyboard\n");
+            gtk_widget_destroy(window);
+            return NULL;
+        }
+    }
+
+    gtk_main();
+
+    if (grab_all) {
+        gdk_display_keyboard_ungrab(gdk_display_get_default(),
+                                    GDK_CURRENT_TIME);
+        gdk_display_pointer_ungrab(gdk_display_get_default(), GDK_CURRENT_TIME);
+#ifdef GDK_WINDOWING_X11
+        gdk_x11_display_ungrab(gdk_display_get_default());
+#endif /* GDK_WINDOWING_X11 */
+        gdk_flush();
+    }
+
+    manage_window_focus_out(window, NULL, NULL);
+
+    if (pass_ack) {
+        const gchar *entry_text;
+        entry_text = gtk_entry_get_text(GTK_ENTRY(pass_entry));
+        the_passphrase = g_locale_from_utf8(entry_text, -1, NULL, NULL, NULL);
+        if (!the_passphrase)
+            the_passphrase = g_strdup(entry_text);
+    }
+    gtk_widget_destroy(window);
+
+    return the_passphrase;
+}
+
+
+static void 
+passphrase_ok_cb(GtkWidget *widget, gpointer data)
+{
+    pass_ack = TRUE;
+    gtk_main_quit();
+}
+
+static void 
+passphrase_cancel_cb(GtkWidget *widget, gpointer data)
+{
+    pass_ack = FALSE;
+    gtk_main_quit();
+}
+
+
+static gint
+passphrase_deleted(GtkWidget *widget, GdkEventAny *event, gpointer data)
+{
+    passphrase_cancel_cb(NULL, NULL);
+    return TRUE;
+}
+
+
+static gboolean
+passphrase_key_pressed(GtkWidget *widget, GdkEventKey *event, gpointer data)
+{
+    if (event && event->keyval == GDK_Escape)
+        passphrase_cancel_cb(NULL, NULL);
+    return FALSE;
+}
+
+static gint 
+linelen (const gchar *s)
+{
+    gint i;
+
+    for (i = 0; *s && *s != '\n'; s++, i++)
+        ;
+
+    return i;
+}
+
+static GtkWidget *
+create_description(const gchar *uid_hint, const gchar *pass_hint, gint prev_bad)
+{
+    const gchar *uid = NULL, *info = NULL;
+    gchar *buf;
+    GtkWidget *label;
+
+    if (!uid_hint)
+        uid = _("[no user id]");
+    else
+        uid = uid_hint;
+    if (!pass_hint)
+        info = "";
+    else
+        info = pass_hint;
+
+    buf = g_strdup_printf (_("%sPlease enter the passphrase for:\n\n"
+                           "  %.*s  \n"
+                           "(%.*s)\n"),
+                           prev_bad ?
+                           _("Bad passphrase! Try again...\n\n") : "",
+                           linelen (uid), uid, linelen (info), info);
+
+    label = gtk_label_new (buf);
+    gtk_label_set_justify (GTK_LABEL (label), GTK_JUSTIFY_LEFT);
+    g_free (buf);
+
+    return label;
+}
+
+static int free_passphrase(gpointer _unused)
+{
+    if (last_pass != NULL) {
+#if HAVE_MLOCK
+        munlock(last_pass, strlen(last_pass));
+#endif
+        g_free(last_pass);
+        last_pass = NULL;
+        debug_print("%% passphrase removed\n");
+    }
+    
+    return FALSE;
+}
+
+gpgme_error_t
+gpgmegtk_passphrase_cb(void *opaque, const char *uid_hint,
+        const char *passphrase_hint, int prev_bad, int fd)
+{
+    const char *pass;
+#if defined(G_OS_WIN32) && !defined(HAVE_GPGME_IO_WRITEN)
+    HANDLE hd = (HANDLE)fd;
+    DWORD n;
+#endif
+
+    if (prefs_common.store_passphrase && last_pass != NULL && !prev_bad) {
+#ifdef HAVE_GPGME_IO_WRITEN
+        gpgme_io_writen(fd, last_pass, strlen(last_pass));
+        gpgme_io_writen(fd, "\n", 1);
+#elif defined(G_OS_WIN32)
+        WriteFile(hd, last_pass, strlen(last_pass), &n, NULL);
+        WriteFile(hd, "\n", 1, &n, NULL);
+#else
+        write(fd, last_pass, strlen(last_pass));
+        write(fd, "\n", 1);
+#endif
+        return GPG_ERR_NO_ERROR;
+    }
+    gpgmegtk_set_passphrase_grab (prefs_common.passphrase_grab);
+    debug_print ("%% requesting passphrase for `%s':\n", uid_hint);
+    pass = passphrase_mbox (uid_hint, passphrase_hint, prev_bad);
+    gpgmegtk_free_passphrase();
+    if (!pass) {
+        debug_print ("%% cancel passphrase entry\n");
+#ifdef HAVE_GPGME_IO_WRITEN
+        gpgme_io_writen(fd, "\n", 1);
+#elif defined(G_OS_WIN32)
+        WriteFile(hd, "\n", 1, &n, NULL);
+        CloseHandle(hd); /* somehow it will block without this */
+#else
+        write(fd, "\n", 1);
+#endif
+        return GPG_ERR_CANCELED;
+    }
+    else {
+        if (prefs_common.store_passphrase) {
+            last_pass = g_strdup(pass);
+#if HAVE_MLOCK
+            if (mlock(last_pass, strlen(last_pass)) == -1)
+                debug_print("%% locking passphrase failed\n");
+#endif
+
+            if (prefs_common.store_passphrase_timeout > 0) {
+                g_timeout_add_full(G_PRIORITY_LOW, prefs_common.store_passphrase_timeout * 60 * 1000, free_passphrase, NULL, NULL);
+            }
+        }
+        debug_print ("%% sending passphrase\n");
+    }
+#ifdef HAVE_GPGME_IO_WRITEN
+    gpgme_io_writen(fd, pass, strlen(pass));
+    gpgme_io_writen(fd, "\n", 1);
+#elif defined(G_OS_WIN32)
+    WriteFile(hd, pass, strlen(pass), &n, NULL);
+    WriteFile(hd, "\n", 1, &n, NULL);
+#else
+    write(fd, pass, strlen(pass));
+    write(fd, "\n", 1);
+#endif
+    return GPG_ERR_NO_ERROR;
+}
+
+void gpgmegtk_free_passphrase()
+{
+    (void)free_passphrase(NULL); // could be inline
+}
+
+#endif /* USE_GPGME */