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-rw-r--r--contrib/gnome-ssh-askpass1.c172
1 files changed, 172 insertions, 0 deletions
diff --git a/contrib/gnome-ssh-askpass1.c b/contrib/gnome-ssh-askpass1.c
new file mode 100644
index 0000000..4c92c17
--- /dev/null
+++ b/contrib/gnome-ssh-askpass1.c
@@ -0,0 +1,172 @@
+/*
+ * Copyright (c) 2000-2002 Damien Miller. All rights reserved.
+ *
+ * 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.
+ */
+
+/*
+ * 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.
+ */
+
+/*
+ * Compile with:
+ *
+ * cc `gnome-config --cflags gnome gnomeui` \
+ * gnome-ssh-askpass1.c -o gnome-ssh-askpass \
+ * `gnome-config --libs gnome gnomeui`
+ *
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <gnome.h>
+#include <X11/Xlib.h>
+#include <gdk/gdkx.h>
+
+void
+report_failed_grab (void)
+{
+ GtkWidget *err;
+
+ err = gnome_message_box_new("Could not grab keyboard or mouse.\n"
+ "A malicious client may be eavesdropping on your session.",
+ GNOME_MESSAGE_BOX_ERROR, "EXIT", NULL);
+ gtk_window_set_position(GTK_WINDOW(err), GTK_WIN_POS_CENTER);
+ gtk_object_set(GTK_OBJECT(err), "type", GTK_WINDOW_POPUP, NULL);
+
+ gnome_dialog_run_and_close(GNOME_DIALOG(err));
+}
+
+int
+passphrase_dialog(char *message)
+{
+ char *passphrase;
+ char **messages;
+ int result, i, grab_server, grab_pointer;
+ GtkWidget *dialog, *entry, *label;
+
+ grab_server = (getenv("GNOME_SSH_ASKPASS_GRAB_SERVER") != NULL);
+ grab_pointer = (getenv("GNOME_SSH_ASKPASS_GRAB_POINTER") != NULL);
+
+ dialog = gnome_dialog_new("OpenSSH", GNOME_STOCK_BUTTON_OK,
+ GNOME_STOCK_BUTTON_CANCEL, NULL);
+
+ messages = g_strsplit(message, "\\n", 0);
+ if (messages)
+ for(i = 0; messages[i]; i++) {
+ label = gtk_label_new(messages[i]);
+ gtk_box_pack_start(GTK_BOX(GNOME_DIALOG(dialog)->vbox),
+ label, FALSE, FALSE, 0);
+ }
+
+ entry = gtk_entry_new();
+ gtk_box_pack_start(GTK_BOX(GNOME_DIALOG(dialog)->vbox), entry, FALSE,
+ FALSE, 0);
+ gtk_entry_set_visibility(GTK_ENTRY(entry), FALSE);
+ gtk_widget_grab_focus(entry);
+
+ /* Center window and prepare for grab */
+ gtk_object_set(GTK_OBJECT(dialog), "type", GTK_WINDOW_POPUP, NULL);
+ gnome_dialog_set_default(GNOME_DIALOG(dialog), 0);
+ gtk_window_set_position (GTK_WINDOW(dialog), GTK_WIN_POS_CENTER);
+ gtk_window_set_policy(GTK_WINDOW(dialog), FALSE, FALSE, TRUE);
+ gnome_dialog_close_hides(GNOME_DIALOG(dialog), TRUE);
+ gtk_container_set_border_width(GTK_CONTAINER(GNOME_DIALOG(dialog)->vbox),
+ GNOME_PAD);
+ gtk_widget_show_all(dialog);
+
+ /* Grab focus */
+ if (grab_server)
+ XGrabServer(GDK_DISPLAY());
+ if (grab_pointer && gdk_pointer_grab(dialog->window, TRUE, 0,
+ NULL, NULL, GDK_CURRENT_TIME))
+ goto nograb;
+ if (gdk_keyboard_grab(dialog->window, FALSE, GDK_CURRENT_TIME))
+ goto nograbkb;
+
+ /* Make <enter> close dialog */
+ gnome_dialog_editable_enters(GNOME_DIALOG(dialog), GTK_EDITABLE(entry));
+
+ /* Run dialog */
+ result = gnome_dialog_run(GNOME_DIALOG(dialog));
+
+ /* Ungrab */
+ if (grab_server)
+ XUngrabServer(GDK_DISPLAY());
+ if (grab_pointer)
+ gdk_pointer_ungrab(GDK_CURRENT_TIME);
+ gdk_keyboard_ungrab(GDK_CURRENT_TIME);
+ gdk_flush();
+
+ /* Report passphrase if user selected OK */
+ passphrase = gtk_entry_get_text(GTK_ENTRY(entry));
+ if (result == 0)
+ puts(passphrase);
+
+ /* Zero passphrase in memory */
+ memset(passphrase, '\0', strlen(passphrase));
+ gtk_entry_set_text(GTK_ENTRY(entry), passphrase);
+
+ gnome_dialog_close(GNOME_DIALOG(dialog));
+ return (result == 0 ? 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());
+ gnome_dialog_close(GNOME_DIALOG(dialog));
+
+ report_failed_grab();
+ return (-1);
+}
+
+int
+main(int argc, char **argv)
+{
+ char *message;
+ int result;
+
+ gnome_init("GNOME ssh-askpass", "0.1", argc, argv);
+
+ if (argc == 2)
+ message = argv[1];
+ else
+ message = "Enter your OpenSSH passphrase:";
+
+ setvbuf(stdout, 0, _IONBF, 0);
+ result = passphrase_dialog(message);
+
+ return (result);
+}