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-rw-r--r--meta/packages/gtk+/files/migration.patch619
1 files changed, 619 insertions, 0 deletions
diff --git a/meta/packages/gtk+/files/migration.patch b/meta/packages/gtk+/files/migration.patch
new file mode 100644
index 0000000000..f4c7f853ad
--- /dev/null
+++ b/meta/packages/gtk+/files/migration.patch
@@ -0,0 +1,619 @@
1Index: configure.in
2===================================================================
3RCS file: /cvs/gnome/gtk+/configure.in,v
4retrieving revision 1.419.2.4
5diff -u -r1.419.2.4 configure.in
6--- configure.in 8 Feb 2005 21:39:42 -0000 1.419.2.4
7+++ configure.in 27 Feb 2005 13:10:16 -0000
8@@ -1495,6 +1495,16 @@
9 GTK_DEP_LIBS="$GDK_EXTRA_LIBS $GTK_DEP_LIBS_FOR_X `$PKG_CONFIG --libs $GDK_PIXBUF_PACKAGES $GDK_PACKAGES $GTK_PACKAGES` $GTK_EXTRA_LIBS $GDK_PIXBUF_EXTRA_LIBS"
10 GTK_DEP_CFLAGS="`$PKG_CONFIG --cflags gthread-2.0 $GDK_PIXBUF_PACKAGES $GDK_PACKAGES $GTK_PACKAGES` $GDK_PIXBUF_EXTRA_CFLAGS $GDK_EXTRA_CFLAGS $GTK_EXTRA_CFLAGS"
11
12+AC_ARG_ENABLE(display-migration,
13+ [AC_HELP_STRING([--enable-display-migration],
14+ [include support for GPE_CHANGE_DISPLAY protocol])],
15+ enable_migration=yes, enable_migration=no)
16+if test "$enable_migration" = "yes"; then
17+ AC_DEFINE([ENABLE_MIGRATION], 1, [Define if display migration is enabled])
18+ GTK_DEP_LIBS="$GTK_DEP_LIBS -lgcrypt"
19+fi
20+AM_CONDITIONAL(ENABLE_MIGRATION, test $enable_migration = "yes")
21+
22 AC_SUBST(GTK_PACKAGES)
23 AC_SUBST(GTK_EXTRA_LIBS)
24 AC_SUBST(GTK_EXTRA_CFLAGS)
25Index: gtk/Makefile.am
26===================================================================
27RCS file: /cvs/gnome/gtk+/gtk/Makefile.am,v
28retrieving revision 1.266.2.1
29diff -u -r1.266.2.1 Makefile.am
30--- gtk/Makefile.am 13 Jan 2005 15:18:21 -0000 1.266.2.1
31+++ gtk/Makefile.am 27 Feb 2005 13:10:17 -0000
32@@ -520,6 +520,10 @@
33 gtkwindow.c \
34 xembed.h
35
36+if ENABLE_MIGRATION
37+gtk_c_sources += gtkmigration.c
38+endif
39+
40 if OS_UNIX
41 gtk_private_h_sources += gtkfilesystemunix.h
42 gtk_c_sources += gtkfilesystemunix.c
43Index: gtk/gtkmain.c
44===================================================================
45RCS file: /cvs/gnome/gtk+/gtk/gtkmain.c,v
46retrieving revision 1.255
47diff -u -r1.255 gtkmain.c
48--- gtk/gtkmain.c 27 Dec 2004 05:25:15 -0000 1.255
49+++ gtk/gtkmain.c 27 Feb 2005 13:10:19 -0000
50@@ -491,6 +491,10 @@
51 _gtk_accel_map_init ();
52 _gtk_rc_init ();
53
54+#ifdef ENABLE_MIGRATION
55+ gtk_migration_init ();
56+#endif
57+
58 /* Set the 'initialized' flag.
59 */
60 gtk_initialized = TRUE;
61Index: gtk/gtkwindow.c
62===================================================================
63RCS file: /cvs/gnome/gtk+/gtk/gtkwindow.c,v
64retrieving revision 1.281.2.4
65diff -u -r1.281.2.4 gtkwindow.c
66--- gtk/gtkwindow.c 21 Feb 2005 04:21:49 -0000 1.281.2.4
67+++ gtk/gtkwindow.c 27 Feb 2005 13:10:56 -0000
68@@ -731,6 +731,8 @@
69 add_tab_bindings (binding_set, GDK_CONTROL_MASK | GDK_SHIFT_MASK, GTK_DIR_TAB_BACKWARD);
70 }
71
72+extern void gtk_migration_mark_window (GtkWidget *w);
73+
74 static void
75 gtk_window_init (GtkWindow *window)
76 {
77@@ -790,6 +792,10 @@
78 "event",
79 G_CALLBACK (gtk_window_event),
80 NULL);
81+
82+#ifdef ENABLE_MIGRATION
83+ gtk_migration_mark_window (window);
84+#endif
85 }
86
87 static void
88--- /dev/null 2005-02-20 01:07:50.714416160 +0000
89+++ gtk/gtkmigration.c 2005-02-27 15:05:04.052757352 +0000
90@@ -0,0 +1,529 @@
91+/*
92+ * Copyright (C) 2003, 2005 Philip Blundell <philb@gnu.org>
93+ *
94+ * This program is free software; you can redistribute it and/or
95+ * modify it under the terms of the GNU General Public License
96+ * as published by the Free Software Foundation; either version
97+ * 2 of the License, or (at your option) any later version.
98+ */
99+
100+#include <stdlib.h>
101+#include <ctype.h>
102+#include <libintl.h>
103+#include <string.h>
104+#include <assert.h>
105+
106+#include <X11/X.h>
107+#include <X11/Xlib.h>
108+#include <X11/Xatom.h>
109+
110+#include <gcrypt.h>
111+
112+#include "gtk.h"
113+#include "gdk.h"
114+#include "x11/gdkx.h"
115+
116+#define _(x) gettext(x)
117+
118+static GdkAtom string_gdkatom, display_change_gdkatom;
119+static GdkAtom rsa_challenge_gdkatom;
120+
121+#define DISPLAY_CHANGE_SUCCESS 0
122+#define DISPLAY_CHANGE_UNABLE_TO_CONNECT 1
123+#define DISPLAY_CHANGE_NO_SUCH_SCREEN 2
124+#define DISPLAY_CHANGE_AUTHENTICATION_BAD 3
125+#define DISPLAY_CHANGE_INDETERMINATE_ERROR 4
126+
127+static gboolean no_auth;
128+
129+static GSList *all_widgets;
130+
131+static gboolean gtk_migration_initialised;
132+
133+#define CHALLENGE_LEN 64
134+
135+gchar *gtk_migration_auth_challenge_string;
136+
137+static unsigned char challenge_bytes[CHALLENGE_LEN];
138+static unsigned long challenge_seq;
139+
140+#define hexbyte(x) ((x) >= 10 ? (x) + 'a' - 10 : (x) + '0')
141+
142+struct rsa_key
143+{
144+ gcry_mpi_t n, e, d, p, q, u;
145+};
146+
147+static gcry_mpi_t
148+mpi_from_sexp (gcry_sexp_t r, char *tag)
149+{
150+ gcry_sexp_t s = gcry_sexp_find_token (r, tag, 0);
151+ return gcry_sexp_nth_mpi (s, 1, GCRYMPI_FMT_USG);
152+}
153+
154+static char *
155+hex_from_mpi (gcry_mpi_t m)
156+{
157+ char *buf;
158+ gcry_mpi_aprint (GCRYMPI_FMT_HEX, (void *)&buf, NULL, m);
159+ return buf;
160+}
161+
162+static void
163+gtk_migration_crypt_create_hash (char *display, char *challenge, size_t len, char *result)
164+{
165+ size_t dlen = strlen (display);
166+ gchar *buf = g_malloc (dlen + 1 + len);
167+ strcpy (buf, display);
168+ memcpy (buf + dlen + 1, challenge, len);
169+ gcry_md_hash_buffer (GCRY_MD_SHA1, result, buf, len + dlen + 1);
170+ g_free (buf);
171+}
172+
173+static int
174+do_encode_md (const unsigned char *digest, size_t digestlen, int algo,
175+ unsigned int nbits, gcry_mpi_t *r_val)
176+{
177+ int nframe = (nbits+7) / 8;
178+ unsigned char *frame;
179+ int i, n;
180+ unsigned char asn[100];
181+ size_t asnlen;
182+
183+ asnlen = sizeof(asn);
184+ if (gcry_md_algo_info (algo, GCRYCTL_GET_ASNOID, asn, &asnlen))
185+ return -1;
186+
187+ if (digestlen + asnlen + 4 > nframe )
188+ return -1;
189+
190+ /* We encode the MD in this way:
191+ *
192+ * 0 1 PAD(n bytes) 0 ASN(asnlen bytes) MD(len bytes)
193+ *
194+ * PAD consists of FF bytes.
195+ */
196+ frame = g_malloc (nframe);
197+ n = 0;
198+ frame[n++] = 0;
199+ frame[n++] = 1; /* block type */
200+ i = nframe - digestlen - asnlen -3 ;
201+ assert ( i > 1 );
202+ memset ( frame+n, 0xff, i ); n += i;
203+ frame[n++] = 0;
204+ memcpy ( frame+n, asn, asnlen ); n += asnlen;
205+ memcpy ( frame+n, digest, digestlen ); n += digestlen;
206+ assert ( n == nframe );
207+
208+ gcry_mpi_scan (r_val, GCRYMPI_FMT_USG, frame, nframe, &nframe);
209+ g_free (frame);
210+ return 0;
211+}
212+
213+static gboolean
214+gtk_migration_crypt_check_signature (struct rsa_key *k, char *hash, char *sigbuf)
215+{
216+ gcry_mpi_t mpi, mpi2;
217+ gcry_sexp_t data, sig, key;
218+ int rc;
219+
220+ do_encode_md (hash, 20, GCRY_MD_SHA1, 1024, &mpi);
221+
222+ gcry_sexp_build (&data, NULL, "(data (value %m))", mpi);
223+
224+ gcry_mpi_release (mpi);
225+
226+ gcry_sexp_build (&key, NULL, "(public-key (rsa (n %m) (e %m)))", k->n, k->e);
227+
228+ if (gcry_mpi_scan (&mpi2, GCRYMPI_FMT_HEX, sigbuf, 0, NULL))
229+ {
230+ gcry_sexp_release (data);
231+ return FALSE;
232+ }
233+
234+ gcry_sexp_build (&sig, NULL, "(sig-val (rsa (s %m)))", mpi2);
235+
236+ rc = gcry_pk_verify (sig, data, key);
237+
238+ gcry_sexp_release (data);
239+ gcry_sexp_release (key);
240+ gcry_sexp_release (sig);
241+ gcry_mpi_release (mpi2);
242+
243+ if (rc)
244+ return FALSE;
245+
246+ return TRUE;
247+}
248+
249+static void
250+gtk_migration_auth_update_challenge (void)
251+{
252+ int i;
253+ unsigned char *p;
254+
255+ if (gtk_migration_auth_challenge_string == NULL)
256+ gtk_migration_auth_challenge_string = g_malloc ((CHALLENGE_LEN * 2) + 9);
257+
258+ p = gtk_migration_auth_challenge_string;
259+
260+ for (i = 0; i < CHALLENGE_LEN; i++)
261+ {
262+ *p++ = hexbyte (challenge_bytes[i] >> 4);
263+ *p++ = hexbyte (challenge_bytes[i] & 15);
264+ }
265+
266+ sprintf (p, "%08lx", challenge_seq++);
267+}
268+
269+static void
270+gtk_migration_auth_generate_challenge (void)
271+{
272+ gcry_randomize (challenge_bytes, sizeof (challenge_bytes), GCRY_STRONG_RANDOM);
273+ gtk_migration_auth_update_challenge ();
274+}
275+
276+static struct rsa_key *
277+parse_pubkey (char *s)
278+{
279+ struct rsa_key *r;
280+ gcry_mpi_t n, e;
281+ gchar *sp;
282+
283+ sp = strtok (s, " \n");
284+ gcry_mpi_scan (&e, GCRYMPI_FMT_HEX, sp, 0, NULL);
285+ sp = strtok (NULL, " \n");
286+ gcry_mpi_scan (&n, GCRYMPI_FMT_HEX, sp, 0, NULL);
287+
288+ r = g_malloc0 (sizeof (struct rsa_key));
289+ r->e = e;
290+ r->n = n;
291+ return r;
292+}
293+
294+static struct rsa_key *
295+lookup_pubkey (u_int32_t id)
296+{
297+ const gchar *home_dir = g_get_home_dir ();
298+ gchar *filename = g_strdup_printf ("%s/.gpe/migrate/public", home_dir);
299+ FILE *fp = fopen (filename, "r");
300+ struct rsa_key *r = NULL;
301+
302+ if (fp)
303+ {
304+ while (!feof (fp))
305+ {
306+ char buffer[4096];
307+ if (fgets (buffer, 4096, fp))
308+ {
309+ char *p;
310+ u_int32_t this_id = strtoul (buffer, &p, 16);
311+ if (p != buffer && *p == ' ')
312+ {
313+#ifdef DEBUG
314+ fprintf (stderr, "found id %x\n", this_id);
315+#endif
316+ if (this_id == id)
317+ {
318+ r = parse_pubkey (++p);
319+ break;
320+ }
321+ }
322+ }
323+ }
324+ fclose (fp);
325+ }
326+
327+ g_free (filename);
328+ return r;
329+}
330+
331+static void
332+free_pubkey (struct rsa_key *k)
333+{
334+ gcry_mpi_release (k->n);
335+ gcry_mpi_release (k->e);
336+
337+ g_free (k);
338+}
339+
340+static gboolean
341+gtk_migration_auth_validate_request (char *display, char *data)
342+{
343+ u_int32_t key_id;
344+ char *ep;
345+ char *p;
346+ struct rsa_key *k;
347+ char hash[20];
348+ gboolean rc;
349+
350+ p = strchr (data, ' ');
351+ if (p == NULL)
352+ return FALSE;
353+ *p++ = 0;
354+
355+ key_id = strtoul (data, &ep, 16);
356+ if (*ep)
357+ return FALSE;
358+
359+ k = lookup_pubkey (key_id);
360+ if (k == NULL)
361+ return FALSE;
362+
363+ gtk_migration_crypt_create_hash (display, gtk_migration_auth_challenge_string,
364+ strlen (gtk_migration_auth_challenge_string), hash);
365+
366+ rc = gtk_migration_crypt_check_signature (k, hash, p);
367+
368+ free_pubkey (k);
369+
370+ return rc;
371+}
372+
373+static int
374+do_change_display (GtkWidget *w, char *display_name)
375+{
376+ GdkDisplay *newdisplay;
377+ guint screen_nr = 1;
378+ guint i;
379+
380+ if (display_name[0] == 0)
381+ return DISPLAY_CHANGE_INDETERMINATE_ERROR;
382+
383+ i = strlen (display_name) - 1;
384+ while (i > 0 && isdigit (display_name[i]))
385+ i--;
386+
387+ if (display_name[i] == '.')
388+ {
389+ screen_nr = atoi (display_name + i + 1);
390+ display_name[i] = 0;
391+ }
392+
393+ newdisplay = gdk_display_open (display_name);
394+ if (newdisplay)
395+ {
396+ GdkScreen *screen = gdk_display_get_screen (newdisplay, screen_nr);
397+ if (screen)
398+ {
399+ gtk_window_set_screen (GTK_WINDOW (w), screen);
400+ gdk_display_manager_set_default_display (gdk_display_manager_get (),
401+ newdisplay);
402+ return DISPLAY_CHANGE_SUCCESS;
403+ }
404+ else
405+ return DISPLAY_CHANGE_NO_SUCH_SCREEN;
406+ }
407+
408+ return DISPLAY_CHANGE_UNABLE_TO_CONNECT;
409+}
410+
411+static void
412+set_challenge_on_window (GdkWindow *window)
413+{
414+ gdk_property_change (window, rsa_challenge_gdkatom, string_gdkatom,
415+ 8, GDK_PROP_MODE_REPLACE, gtk_migration_auth_challenge_string,
416+ strlen (gtk_migration_auth_challenge_string));
417+}
418+
419+static void
420+update_challenge_on_windows (void)
421+{
422+ GSList *i;
423+
424+ gtk_migration_auth_update_challenge ();
425+
426+ for (i = all_widgets; i; i = i->next)
427+ {
428+ GtkWidget *w = GTK_WIDGET (i->data);
429+ if (w->window)
430+ set_challenge_on_window (w->window);
431+ }
432+}
433+
434+static void
435+reset_state (GdkWindow *window)
436+{
437+ gdk_property_change (window, display_change_gdkatom, string_gdkatom,
438+ 8, GDK_PROP_MODE_REPLACE, NULL, 0);
439+}
440+
441+static void
442+generate_response (GdkDisplay *gdisplay, Display *dpy, Window window, int code)
443+{
444+ XClientMessageEvent ev;
445+ Atom atom = gdk_x11_atom_to_xatom_for_display (gdisplay,
446+ display_change_gdkatom);
447+
448+ memset (&ev, 0, sizeof (ev));
449+
450+ ev.type = ClientMessage;
451+ ev.window = window;
452+ ev.message_type = atom;
453+ ev.format = 32;
454+
455+ ev.data.l[0] = window;
456+ ev.data.l[1] = code;
457+
458+ XSendEvent (dpy, DefaultRootWindow (dpy), False, SubstructureNotifyMask, (XEvent *)&ev);
459+}
460+
461+static int
462+handle_request (GdkWindow *gwindow, char *prop)
463+{
464+ GtkWidget *widget;
465+ char *target, *auth_method, *auth_data;
466+ char *p;
467+
468+ target = prop;
469+ auth_method = "NULL";
470+ auth_data = NULL;
471+
472+ p = strchr (prop, ' ');
473+ if (p)
474+ {
475+ *p = 0;
476+ auth_method = ++p;
477+
478+ p = strchr (p, ' ');
479+ if (p)
480+ {
481+ *p = 0;
482+ auth_data = ++p;
483+ }
484+ }
485+
486+ if (no_auth == FALSE)
487+ {
488+ if (!strcasecmp (auth_method, "null"))
489+ return DISPLAY_CHANGE_AUTHENTICATION_BAD;
490+ else if (!strcasecmp (auth_method, "rsa-sig"))
491+ {
492+ if (gtk_migration_auth_validate_request (target, auth_data) == FALSE)
493+ return DISPLAY_CHANGE_AUTHENTICATION_BAD;
494+ }
495+ else
496+ return DISPLAY_CHANGE_AUTHENTICATION_BAD;
497+ }
498+
499+ gdk_window_get_user_data (gwindow, (gpointer*) &widget);
500+
501+ if (widget)
502+ return do_change_display (widget, target);
503+
504+ return DISPLAY_CHANGE_INDETERMINATE_ERROR;
505+}
506+
507+static GdkFilterReturn
508+filter_func (GdkXEvent *xevp, GdkEvent *ev, gpointer p)
509+{
510+ XPropertyEvent *xev = (XPropertyEvent *)xevp;
511+
512+ if (xev->type == PropertyNotify)
513+ {
514+ GdkDisplay *gdisplay;
515+ Atom atom;
516+
517+ gdisplay = gdk_x11_lookup_xdisplay (xev->display);
518+ if (gdisplay)
519+ {
520+ atom = gdk_x11_atom_to_xatom_for_display (gdisplay, display_change_gdkatom);
521+
522+ if (xev->atom == atom)
523+ {
524+ GdkWindow *gwindow;
525+
526+ gwindow = gdk_window_lookup_for_display (gdisplay, xev->window);
527+
528+ if (gwindow)
529+ {
530+ GdkAtom actual_type;
531+ gint actual_format;
532+ gint actual_length;
533+ unsigned char *prop = NULL;
534+
535+ if (gdk_property_get (gwindow, display_change_gdkatom, string_gdkatom,
536+ 0, G_MAXLONG, FALSE, &actual_type, &actual_format,
537+ &actual_length, &prop))
538+ {
539+ if (actual_length != 0)
540+ {
541+ if (actual_type == string_gdkatom && actual_length > 8)
542+ {
543+ gchar *buf = g_malloc (actual_length + 1);
544+ int rc;
545+
546+ memcpy (buf, prop, actual_length);
547+ buf[actual_length] = 0;
548+
549+ rc = handle_request (gwindow, buf);
550+
551+ g_free (buf);
552+ generate_response (gdisplay, xev->display, xev->window, rc);
553+
554+ if (rc == DISPLAY_CHANGE_SUCCESS)
555+ update_challenge_on_windows ();
556+ }
557+
558+ reset_state (gwindow);
559+ }
560+ }
561+
562+ if (prop)
563+ g_free (prop);
564+ }
565+ }
566+
567+ return GDK_FILTER_REMOVE;
568+ }
569+ }
570+
571+ return GDK_FILTER_CONTINUE;
572+}
573+
574+static void
575+unrealize_window (GtkWidget *w)
576+{
577+ all_widgets = g_slist_remove (all_widgets, w);
578+}
579+
580+void
581+gtk_migration_mark_window (GtkWidget *w)
582+{
583+ if (! gtk_migration_initialised)
584+ {
585+ g_warning ("gtk_migration not initialised yet");
586+ return;
587+ }
588+
589+ if (GTK_WIDGET_REALIZED (w))
590+ {
591+ GdkWindow *window = w->window;
592+
593+ gdk_window_add_filter (window, filter_func, NULL);
594+
595+ reset_state (window);
596+ set_challenge_on_window (window);
597+
598+ all_widgets = g_slist_append (all_widgets, w);
599+
600+ g_signal_connect (G_OBJECT (w), "unrealize", G_CALLBACK (unrealize_window), NULL);
601+ }
602+ else
603+ g_signal_connect (G_OBJECT (w), "realize", G_CALLBACK (gtk_migration_mark_window), NULL);
604+}
605+
606+void
607+gtk_migration_init (void)
608+{
609+ if (getenv ("GPE_DISPLAY_MIGRATION_NO_AUTH") != NULL)
610+ no_auth = TRUE;
611+
612+ string_gdkatom = gdk_atom_intern ("STRING", FALSE);
613+ display_change_gdkatom = gdk_atom_intern ("_GPE_DISPLAY_CHANGE", FALSE);
614+ rsa_challenge_gdkatom = gdk_atom_intern ("_GPE_DISPLAY_CHANGE_RSA_CHALLENGE", FALSE);
615+
616+ gtk_migration_auth_generate_challenge ();
617+
618+ gtk_migration_initialised = TRUE;
619+}
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