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/*
Compile with:
cc `gnome-config --cflags gnome gnomeui` \
gnome-ssh-askpass.c -o gnome-ssh-askpass \
`gnome-config --libs gnome gnomeui`
*/
/*
**
** GNOME ssh passphrase requestor
**
** Damien Miller <djm@ibs.com.au>
**
** Copyright 1999 Internet Business Solutions
**
** Permission is hereby granted, free of charge, to any person
** obtaining a copy of this software and associated documentation
** files (the "Software"), to deal in the Software without
** restriction, including without limitation the rights to use, copy,
** modify, merge, publish, distribute, sublicense, and/or sell copies
** of the Software, and to permit persons to whom the Software is
** furnished to do so, subject to the following conditions:
**
** The above copyright notice and this permission notice shall be
** included in all copies or substantial portions of the Software.
**
** THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
** KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
** WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE
** AND NONINFRINGEMENT. IN NO EVENT SHALL DAMIEN MILLER OR INTERNET
** BUSINESS SOLUTIONS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
** LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
** ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE
** OR OTHER DEALINGS IN THE SOFTWARE.
**
** Except as contained in this notice, the name of Internet Business
** Solutions shall not be used in advertising or otherwise to promote
** the sale, use or other dealings in this Software without prior
** written authorization from Internet Business Solutions.
**
*/
#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));
}
void
passphrase_dialog(char *message)
{
char *passphrase;
int result;
GtkWidget *dialog, *entry, *label;
dialog = gnome_dialog_new("OpenSSH", GNOME_STOCK_BUTTON_OK,
GNOME_STOCK_BUTTON_CANCEL, NULL);
label = gtk_label_new(message);
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 */
XGrabServer(GDK_DISPLAY());
if (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 */
XUngrabServer(GDK_DISPLAY());
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;
/* 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:
XUngrabServer(GDK_DISPLAY());
gnome_dialog_close(GNOME_DIALOG(dialog));
report_failed_grab();
}
int
main(int argc, char **argv)
{
char *message;
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);
passphrase_dialog(message);
return 0;
}
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