]> andersk Git - openssh.git/blob - contrib/gnome-ssh-askpass.c
- (djm) Warn user if grabs fail in GNOME askpass. Patch from Zack Weinberg
[openssh.git] / contrib / gnome-ssh-askpass.c
1 /*
2    Compile with:
3
4    cc `gnome-config --cflags gnome gnomeui` \
5      gnome-ssh-askpass.c -o gnome-ssh-askpass \
6      `gnome-config --libs gnome gnomeui`
7
8 */
9
10 /*
11 **
12 ** GNOME ssh passphrase requestor
13 **
14 ** Damien Miller <djm@ibs.com.au>
15 ** 
16 ** Copyright 1999 Internet Business Solutions
17 **
18 ** Permission is hereby granted, free of charge, to any person
19 ** obtaining a copy of this software and associated documentation
20 ** files (the "Software"), to deal in the Software without
21 ** restriction, including without limitation the rights to use, copy,
22 ** modify, merge, publish, distribute, sublicense, and/or sell copies
23 ** of the Software, and to permit persons to whom the Software is
24 ** furnished to do so, subject to the following conditions:
25 **
26 ** The above copyright notice and this permission notice shall be
27 ** included in all copies or substantial portions of the Software.
28 **
29 ** THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
30 ** KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
31 ** WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE
32 ** AND NONINFRINGEMENT.  IN NO EVENT SHALL DAMIEN MILLER OR INTERNET
33 ** BUSINESS SOLUTIONS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
34 ** LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
35 ** ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE
36 ** OR OTHER DEALINGS IN THE SOFTWARE.
37 **
38 ** Except as contained in this notice, the name of Internet Business
39 ** Solutions shall not be used in advertising or otherwise to promote
40 ** the sale, use or other dealings in this Software without prior
41 ** written authorization from Internet Business Solutions.
42 **
43 */
44
45 #include <stdlib.h>
46 #include <stdio.h>
47 #include <string.h>
48 #include <gnome.h>
49 #include <X11/Xlib.h>
50 #include <gdk/gdkx.h>
51
52 void
53 report_failed_grab (void)
54 {
55         GtkWidget *err;
56
57         err = gnome_message_box_new("Could not grab keyboard or mouse.\n"
58                 "A malicious client may be eavesdropping on your session.",
59                                     GNOME_MESSAGE_BOX_ERROR, "EXIT", NULL);
60         gtk_window_set_position(GTK_WINDOW(err), GTK_WIN_POS_CENTER);
61         gtk_object_set(GTK_OBJECT(err), "type", GTK_WINDOW_POPUP, NULL);
62
63         gnome_dialog_run_and_close(GNOME_DIALOG(err));
64 }
65
66 void
67 passphrase_dialog(char *message)
68 {
69         char *passphrase;
70         int result;
71         
72         GtkWidget *dialog, *entry, *label;
73
74         dialog = gnome_dialog_new("OpenSSH", GNOME_STOCK_BUTTON_OK, 
75                                                                           GNOME_STOCK_BUTTON_CANCEL, NULL);
76
77         label = gtk_label_new(message);
78         gtk_box_pack_start(GTK_BOX(GNOME_DIALOG(dialog)->vbox), label, FALSE, 
79                                                          FALSE, 0);
80
81         entry = gtk_entry_new();
82         gtk_box_pack_start(GTK_BOX(GNOME_DIALOG(dialog)->vbox), entry, FALSE, 
83                                                          FALSE, 0);
84         gtk_entry_set_visibility(GTK_ENTRY(entry), FALSE);
85         gtk_widget_grab_focus(entry);
86
87         /* Center window and prepare for grab */
88         gtk_object_set(GTK_OBJECT(dialog), "type", GTK_WINDOW_POPUP, NULL);
89         gnome_dialog_set_default(GNOME_DIALOG(dialog), 0);
90         gtk_window_set_position (GTK_WINDOW(dialog), GTK_WIN_POS_CENTER);
91         gtk_window_set_policy(GTK_WINDOW(dialog), FALSE, FALSE, TRUE);
92         gnome_dialog_close_hides(GNOME_DIALOG(dialog), TRUE);
93         gtk_container_set_border_width(GTK_CONTAINER(GNOME_DIALOG(dialog)->vbox), GNOME_PAD);
94         gtk_widget_show_all(dialog);
95
96         /* Grab focus */
97         XGrabServer(GDK_DISPLAY());
98         if (gdk_pointer_grab(dialog->window, TRUE, 0,
99                              NULL, NULL, GDK_CURRENT_TIME))
100                 goto nograb;
101         if (gdk_keyboard_grab(dialog->window, FALSE, GDK_CURRENT_TIME))
102                 goto nograbkb;
103
104         /* Make <enter> close dialog */
105         gnome_dialog_editable_enters(GNOME_DIALOG(dialog), GTK_EDITABLE(entry));
106
107         /* Run dialog */
108         result = gnome_dialog_run(GNOME_DIALOG(dialog));
109
110         /* Ungrab */
111         XUngrabServer(GDK_DISPLAY());
112         gdk_pointer_ungrab(GDK_CURRENT_TIME);
113         gdk_keyboard_ungrab(GDK_CURRENT_TIME);
114         gdk_flush();
115
116         /* Report passphrase if user selected OK */
117         passphrase = gtk_entry_get_text(GTK_ENTRY(entry));
118         if (result == 0)
119                 puts(passphrase);
120                 
121         /* Zero passphrase in memory */
122         memset(passphrase, '\0', strlen(passphrase));
123         gtk_entry_set_text(GTK_ENTRY(entry), passphrase);
124                         
125         gnome_dialog_close(GNOME_DIALOG(dialog));
126         return;
127
128         /* At least one grab failed - ungrab what we got, and report
129            the failure to the user.  Note that XGrabServer() cannot
130            fail.  */
131  nograbkb:
132         gdk_pointer_ungrab(GDK_CURRENT_TIME);
133  nograb:
134         XUngrabServer(GDK_DISPLAY());
135         gnome_dialog_close(GNOME_DIALOG(dialog));
136         
137         report_failed_grab();
138 }
139
140 int
141 main(int argc, char **argv)
142 {
143         char *message;
144         
145         gnome_init("GNOME ssh-askpass", "0.1", argc, argv);
146
147         if (argc == 2)
148                 message = argv[1];
149         else
150                 message = "Enter your OpenSSH passphrase:";
151
152         setvbuf(stdout, 0, _IONBF, 0);
153         passphrase_dialog(message);
154         return 0;
155 }
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