1 files changed, 171 insertions, 0 deletions

diff --git a/contrib/gnome-ssh-askpass1.c b/contrib/gnome-ssh-askpass1.c
new file mode 100644
index 000000000..b6b342b84
--- /dev/null
+++ b/contrib/gnome-ssh-askpass1.c
@@ -0,0 +1,171 @@
+/*
+ * 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);
+}