[PATCH 1/1] Ported gnome-ssh-askpass2 to gtk3.
Mark Pustjens
pustjens at dds.nl
Fri Jan 13 21:48:57 EST 2012
Hello List,
This is for the portable release.
I wanted gnome-ssh-askpass to be a gtk+3 app, so I made a quick port.
Mark
---
contrib/Makefile | 7 +-
contrib/gnome-ssh-askpass3.c | 220 ++++++++++++++++++++++++++++++++++++++++++
2 files changed, 226 insertions(+), 1 deletions(-)
create mode 100644 contrib/gnome-ssh-askpass3.c
diff --git a/contrib/Makefile b/contrib/Makefile
index 8b34eb2..b9168df 100644
--- a/contrib/Makefile
+++ b/contrib/Makefile
@@ -11,5 +11,10 @@ gnome-ssh-askpass2: gnome-ssh-askpass2.c
gnome-ssh-askpass2.c -o gnome-ssh-askpass2 \
`pkg-config --libs gtk+-2.0 x11`
+gnome-ssh-askpass3: gnome-ssh-askpass3.c
+ $(CC) `pkg-config --cflags gtk+-3.0` \
+ gnome-ssh-askpass3.c -o gnome-ssh-askpass3 \
+ `pkg-config --libs gtk+-3.0 x11`
+
clean:
- rm -f *.o gnome-ssh-askpass1 gnome-ssh-askpass2 gnome-ssh-askpass
+ rm -f *.o gnome-ssh-askpass1 gnome-ssh-askpass2 gnome-ssh-askpass3 gnome-ssh-askpass
diff --git a/contrib/gnome-ssh-askpass3.c b/contrib/gnome-ssh-askpass3.c
new file mode 100644
index 0000000..79d522e
--- /dev/null
+++ b/contrib/gnome-ssh-askpass3.c
@@ -0,0 +1,220 @@
+/*
+ * Copyright (c) 2000-2002 Damien Miller. All rights reserved.
+ * Ported to gtk+3 by Mark Pustjens.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/* GTK2 support by Nalin Dahyabhai <nalin at redhat.com> */
+
+/*
+ * This is a simple GNOME SSH passphrase grabber. To use it, set the
+ * environment variable SSH_ASKPASS to point to the location of
+ * gnome-ssh-askpass before calling "ssh-add < /dev/null".
+ *
+ * There is only two run-time options: if you set the environment variable
+ * "GNOME_SSH_ASKPASS_GRAB_SERVER=true" then gnome-ssh-askpass will grab
+ * the X server. If you set "GNOME_SSH_ASKPASS_GRAB_POINTER=true", then the
+ * pointer will be grabbed too. These may have some benefit to security if
+ * you don't trust your X server. We grab the keyboard always.
+ */
+
+#define GRAB_TRIES 16
+#define GRAB_WAIT 250 /* milliseconds */
+
+/*
+ * Compile with:
+ *
+ * cc -Wall `pkg-config --cflags gtk+-3.0` \
+ * gnome-ssh-askpass3.c -o gnome-ssh-askpass \
+ * `pkg-config --libs gtk+-3.0`
+ *
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <X11/Xlib.h>
+#include <gtk/gtk.h>
+#include <gdk/gdkx.h>
+
+static void
+report_failed_grab (const char *what)
+{
+ GtkWidget *err;
+
+ err = gtk_message_dialog_new(NULL, 0,
+ GTK_MESSAGE_ERROR,
+ GTK_BUTTONS_CLOSE,
+ "Could not grab %s. "
+ "A malicious client may be eavesdropping "
+ "on your session.", what);
+ gtk_window_set_position(GTK_WINDOW(err), GTK_WIN_POS_CENTER);
+
+ gtk_dialog_run(GTK_DIALOG(err));
+
+ gtk_widget_destroy(err);
+}
+
+static void
+ok_dialog(GtkWidget *entry, gpointer dialog)
+{
+ g_return_if_fail(GTK_IS_DIALOG(dialog));
+ gtk_dialog_response(GTK_DIALOG(dialog), GTK_RESPONSE_OK);
+}
+
+static int
+passphrase_dialog(char *message)
+{
+ const char *failed;
+ char *passphrase, *local;
+ int result, grab_tries, grab_server, grab_pointer;
+ GtkWidget *dialog, *entry;
+ GdkGrabStatus status;
+
+ grab_server = (getenv("GNOME_SSH_ASKPASS_GRAB_SERVER") != NULL);
+ grab_pointer = (getenv("GNOME_SSH_ASKPASS_GRAB_POINTER") != NULL);
+ grab_tries = 0;
+
+ dialog = gtk_message_dialog_new(NULL, 0,
+ GTK_MESSAGE_QUESTION,
+ GTK_BUTTONS_OK_CANCEL,
+ "%s",
+ message);
+
+ entry = gtk_entry_new();
+ gtk_box_pack_start(GTK_BOX(gtk_message_dialog_get_message_area(GTK_MESSAGE_DIALOG(dialog))), entry, FALSE,
+ FALSE, 0);
+ gtk_entry_set_visibility(GTK_ENTRY(entry), FALSE);
+ gtk_widget_grab_focus(entry);
+ gtk_widget_show(entry);
+
+ gtk_window_set_title(GTK_WINDOW(dialog), "OpenSSH");
+ gtk_window_set_position (GTK_WINDOW(dialog), GTK_WIN_POS_CENTER);
+ gtk_window_set_keep_above(GTK_WINDOW(dialog), TRUE);
+
+ /* Make <enter> close dialog */
+ gtk_dialog_set_default_response(GTK_DIALOG(dialog), GTK_RESPONSE_OK);
+ g_signal_connect(G_OBJECT(entry), "activate",
+ G_CALLBACK(ok_dialog), dialog);
+
+ gtk_window_set_keep_above(GTK_WINDOW(dialog), TRUE);
+
+ /* Grab focus */
+ gtk_widget_show_now(dialog);
+ if (grab_pointer) {
+ for(;;) {
+ status = gdk_pointer_grab(
+ gtk_widget_get_window(GTK_WIDGET(dialog)), TRUE, 0, NULL,
+ NULL, GDK_CURRENT_TIME);
+ if (status == GDK_GRAB_SUCCESS)
+ break;
+ usleep(GRAB_WAIT * 1000);
+ if (++grab_tries > GRAB_TRIES) {
+ failed = "mouse";
+ goto nograb;
+ }
+ }
+ }
+ for(;;) {
+ status = gdk_keyboard_grab(gtk_widget_get_window(GTK_WIDGET(dialog)),
+ FALSE, GDK_CURRENT_TIME);
+ if (status == GDK_GRAB_SUCCESS)
+ break;
+ usleep(GRAB_WAIT * 1000);
+ if (++grab_tries > GRAB_TRIES) {
+ failed = "keyboard";
+ goto nograbkb;
+ }
+ }
+ if (grab_server) {
+ gdk_x11_grab_server();
+ }
+
+ result = gtk_dialog_run(GTK_DIALOG(dialog));
+
+ /* Ungrab */
+ if (grab_server)
+ XUngrabServer(GDK_DISPLAY_XDISPLAY(gdk_display_get_default()));
+ if (grab_pointer)
+ gdk_pointer_ungrab(GDK_CURRENT_TIME);
+ gdk_keyboard_ungrab(GDK_CURRENT_TIME);
+ gdk_flush();
+
+ /* Report passphrase if user selected OK */
+ passphrase = g_strdup(gtk_entry_get_text(GTK_ENTRY(entry)));
+ if (result == GTK_RESPONSE_OK) {
+ local = g_locale_from_utf8(passphrase, strlen(passphrase),
+ NULL, NULL, NULL);
+ if (local != NULL) {
+ puts(local);
+ memset(local, '\0', strlen(local));
+ g_free(local);
+ } else {
+ puts(passphrase);
+ }
+ }
+
+ /* Zero passphrase in memory */
+ memset(passphrase, '\b', strlen(passphrase));
+ gtk_entry_set_text(GTK_ENTRY(entry), passphrase);
+ memset(passphrase, '\0', strlen(passphrase));
+ g_free(passphrase);
+
+ gtk_widget_destroy(dialog);
+ return (result == GTK_RESPONSE_OK ? 0 : -1);
+
+ /* At least one grab failed - ungrab what we got, and report
+ the failure to the user. Note that XGrabServer() cannot
+ fail. */
+ nograbkb:
+ gdk_pointer_ungrab(GDK_CURRENT_TIME);
+ nograb:
+ if (grab_server)
+ XUngrabServer(GDK_DISPLAY_XDISPLAY(gdk_display_get_default()));
+ gtk_widget_destroy(dialog);
+
+ report_failed_grab(failed);
+
+ return (-1);
+}
+
+int
+main(int argc, char **argv)
+{
+ char *message;
+ int result;
+
+ gtk_init(&argc, &argv);
+
+ if (argc > 1) {
+ message = g_strjoinv(" ", argv + 1);
+ } else {
+ message = g_strdup("Enter your OpenSSH passphrase:");
+ }
+
+ setvbuf(stdout, 0, _IONBF, 0);
+ result = passphrase_dialog(message);
+ g_free(message);
+
+ return (result);
+}
--
1.7.8.3
Greetings/Groetjes
Mark Pustjens
--
Words are the litmus paper of the minds. If you find yourself in the power
of someone who will use the word "commence" in cold blood, go somewhere
else very quickly. But if they say "Enter", don't stop to pack.
(Small Gods)
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