forked from osmocom/wireshark
21a8f186bb
packet-x11 copy and past overlooked? test with 8 but substract to 4. svn path=/trunk/; revision=17420
5368 lines
151 KiB
C
5368 lines
151 KiB
C
/* packet-x11.c
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* Routines for X11 dissection
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* Copyright 2000, Christophe Tronche <ch.tronche@computer.org>
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* Copyright 2003, Michael Shuldman
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*
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* $Id$
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*
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* Ethereal - Network traffic analyzer
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* By Gerald Combs <gerald@ethereal.com>
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* Copyright 1998 Gerald Combs
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*
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* Copied from README.developer
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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/* TODO (in no particular order):
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*
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* - keep track of Atom creation by server to be able to display
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* non-predefined atoms
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* - Idem for keysym <-> keycode ???
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* - Idem for fonts
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* - Subtree the request ids (that is x11.create-window.window and
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* x11.change-window.window should be distinct), and add hidden fields
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* (so we still have x11.window).
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* - add hidden fields so we can have x11.circulate-window in addition to
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* x11.opcode == 13 (but you could match on x11.opcode == "CirculateWindow"
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* now)
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* - add hidden fields so we have x11.listOfStuff.length
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* - use a faster scheme that linear list searching for the opcode.
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* - correct display of Unicode chars.
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* - Not everything is homogeneous, in particular the handling of items in
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* list is a total mess.
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*/
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/* By the way, I wrote a program to generate every request and test
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* that stuff. If you're interested, you can get it at
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* http://tronche.com/gui/x/
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <assert.h>
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#include <ctype.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <glib.h>
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#include <epan/packet.h>
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#include <epan/conversation.h>
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#include <epan/prefs.h>
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#include "packet-frame.h"
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#include "packet-x11-keysymdef.h"
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#include <epan/emem.h>
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#define cVALS(x) (const value_string*)(x)
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/*
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* Data structure associated with a conversation; keeps track of the
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* request for which we're expecting a reply, the frame number of
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* the initial connection request, and the byte order of the connection.
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*
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* An opcode of -3 means we haven't yet seen any requests yet.
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* An opcode of -2 means we're not expecting a reply (unused).
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* An opcode of -1 means we're waiting for a reply to the initial
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* connection request.
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* An opcode of 0 means the request was not seen (or unknown).
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* Other values are the opcode of the request for which we're expecting
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* a reply.
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*
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*/
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#define NOTHING_SEEN -3
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#define NOTHING_EXPECTED -2
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#define INITIAL_CONN -1
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#define UNKNOWN_OPCODE 0
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#define MAX_OPCODES (255 + 1) /* 255 + INITIAL_CONN */
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#define BYTE_ORDER_BE 0
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#define BYTE_ORDER_LE 1
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#define BYTE_ORDER_UNKNOWN -1
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static const char *modifiers[] = {
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"Shift",
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"Lock",
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"Control",
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"Mod1",
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"Mod2",
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"Mod3",
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"Mod4",
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"Mod5"
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};
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/* Keymasks. From <X11/X.h>. */
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#define ShiftMask (1<<0)
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#define LockMask (1<<1)
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#define ControlMask (1<<2)
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#define Mod1Mask (1<<3)
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#define Mod2Mask (1<<4)
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#define Mod3Mask (1<<5)
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#define Mod4Mask (1<<6)
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#define Mod5Mask (1<<7)
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static const int modifiermask[] = { ShiftMask, LockMask, ControlMask,
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Mod1Mask, Mod2Mask, Mod3Mask, Mod4Mask, Mod5Mask };
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/* from <X11/X.h> */
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#define NoSymbol 0L /* special KeySym */
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typedef struct _x11_conv_data {
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struct _x11_conv_data *next;
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GHashTable *seqtable; /* hashtable of sequencenumber <-> opcode. */
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GHashTable *valtable;/* hashtable of sequencenumber <-> &opcode_vals */
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/* major opcodes including extensions (NULL terminated) */
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value_string opcode_vals[MAX_OPCODES+1];
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int sequencenumber; /* sequencenumber of current packet. */
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guint32 iconn_frame; /* frame # of initial connection request */
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guint32 iconn_reply; /* frame # of initial connection reply */
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int byte_order; /* byte order of connection */
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gboolean resync; /* resynchronization of sequence number performed */
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int *keycodemap[256]; /* keycode to keysymvalue map. */
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int keysyms_per_keycode;
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int first_keycode;
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int *modifiermap[array_length(modifiers)];/* modifier to keycode.*/
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int keycodes_per_modifier;
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union {
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struct {
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int first_keycode;
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} GetKeyboardMapping;
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} request;
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} x11_conv_data_t;
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static x11_conv_data_t *x11_conv_data_list;
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/* Initialize the protocol and registered fields */
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static int proto_x11 = -1;
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#include "x11-declarations.h"
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/* Initialize the subtree pointers */
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static gint ett_x11 = -1;
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static gint ett_x11_color_flags = -1;
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static gint ett_x11_list_of_arc = -1;
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static gint ett_x11_arc = -1;
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static gint ett_x11_list_of_atom = -1;
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static gint ett_x11_list_of_card32 = -1;
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static gint ett_x11_list_of_color_item = -1;
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static gint ett_x11_color_item = -1;
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static gint ett_x11_list_of_keycode = -1;
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static gint ett_x11_list_of_keysyms = -1;
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static gint ett_x11_keysym = -1;
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static gint ett_x11_list_of_point = -1;
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static gint ett_x11_point = -1;
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static gint ett_x11_list_of_rectangle = -1;
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static gint ett_x11_rectangle = -1;
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static gint ett_x11_list_of_segment = -1;
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static gint ett_x11_segment = -1;
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static gint ett_x11_list_of_string8 = -1;
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static gint ett_x11_list_of_text_item = -1;
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static gint ett_x11_text_item = -1;
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static gint ett_x11_gc_value_mask = -1; /* XXX - unused */
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static gint ett_x11_event_mask = -1; /* XXX - unused */
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static gint ett_x11_do_not_propagate_mask = -1; /* XXX - unused */
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static gint ett_x11_set_of_key_mask = -1;
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static gint ett_x11_pointer_event_mask = -1; /* XXX - unused */
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static gint ett_x11_window_value_mask = -1; /* XXX - unused */
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static gint ett_x11_configure_window_mask = -1; /* XXX - unused */
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static gint ett_x11_keyboard_value_mask = -1; /* XXX - unused */
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static gint ett_x11_same_screen_focus = -1;
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/* desegmentation of X11 messages */
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static gboolean x11_desegment = TRUE;
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static dissector_handle_t data_handle;
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#define TCP_PORT_X11 6000
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#define TCP_PORT_X11_2 6001
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#define TCP_PORT_X11_3 6002
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/*
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* Round a length to a multiple of 4 bytes.
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*/
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#define ROUND_LENGTH(n) ((((n) + 3)/4) * 4)
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/************************************************************************
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*** ***
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*** E N U M T A B L E S D E F I N I T I O N S ***
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*** ***
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************************************************************************/
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static const value_string byte_order_vals[] = {
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{ 'B', "Big-endian" },
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{ 'l', "Little-endian" },
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{ 0, NULL }
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};
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static const value_string image_byte_order_vals[] = {
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{ 0, "LSBFirst" },
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{ 1, "MSBFirst" },
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{ 0, NULL }
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};
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static const value_string access_mode_vals[] = {
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{ 0, "Disable" },
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{ 1, "Enable" },
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{ 0, NULL }
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};
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static const value_string all_temporary_vals[] = {
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{ 0, "AllTemporary" },
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{ 0, NULL }
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};
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static const value_string alloc_vals[] = {
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{ 0, "None" },
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{ 1, "All" },
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{ 0, NULL }
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};
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static const value_string allow_events_mode_vals[] = {
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{ 0, "AsyncPointer" },
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{ 1, "SyncPointer" },
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{ 2, "ReplayPointer" },
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{ 3, "AsyncKeyboard" },
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{ 4, "SyncKeyboard" },
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{ 5, "ReplayKeyboard" },
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{ 6, "AsyncBoth" },
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{ 7, "SyncBoth" },
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{ 0, NULL }
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};
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static const value_string arc_mode_vals[] = {
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{ 0, "Chord" },
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{ 1, "PieSlice" },
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{ 0, NULL }
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};
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static const char *atom_predefined_interpretation[] = {
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"<error>",
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"PRIMARY",
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"SECONDARY",
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"ARC",
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"ATOM",
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"BITMAP",
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"CARDINAL",
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"COLORMAP",
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"CURSOR",
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"CUT_BUFFER0",
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"CUT_BUFFER1",
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"CUT_BUFFER2",
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"CUT_BUFFER3",
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"CUT_BUFFER4",
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"CUT_BUFFER5",
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"CUT_BUFFER6",
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"CUT_BUFFER7",
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"DRAWABLE",
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"FONT",
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"INTEGER",
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"PIXMAP",
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"POINT",
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"RECTANGLE",
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"RESOURCE_MANAGER",
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"RGB_COLOR_MAP",
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"RGB_BEST_MAP",
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"RGB_BLUE_MAP",
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"RGB_DEFAULT_MAP",
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"RGB_GRAY_MAP",
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"RGB_GREEN_MAP",
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"RGB_RED_MAP",
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"STRING",
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"VISUALID",
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"WINDOW",
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"WM_COMMAND",
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"WM_HINTS",
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"WM_CLIENT_MACHINE",
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"WM_ICON_NAME",
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"WM_ICON_SIZE",
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"WM_NAME",
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"WM_NORMAL_HINTS",
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"WM_SIZE_HINTS",
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"WM_ZOOM_HINTS",
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"MIN_SPACE",
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"NORM_SPACE",
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"MAX_SPACE",
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"END_SPACE",
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"SUPERSCRIPT_X",
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"SUPERSCRIPT_Y",
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"SUBSCRIPT_X",
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"SUBSCRIPT_Y",
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"UNDERLINE_POSITION",
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"UNDERLINE_THICKNESS",
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"STRIKEOUT_ASCENT",
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"STRIKEOUT_DESCENT",
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"ITALIC_ANGLE",
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"X_HEIGHT",
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"QUAD_WIDTH",
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"WEIGHT",
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"POINT_SIZE",
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"RESOLUTION",
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"COPYRIGHT",
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"NOTICE",
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"FONT_NAME",
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"FAMILY_NAME",
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"FULL_NAME",
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"CAP_HEIGHT",
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"WM_CLASS",
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"WM_TRANSIENT_FOR",
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};
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static const value_string auto_repeat_mode_vals[] = {
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{ 0, "Off" },
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{ 1, "On" },
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{ 2, "Default" },
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{ 0, NULL }
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};
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static const value_string background_pixmap_vals[] = {
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{ 0, "None" },
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{ 1, "ParentRelative" },
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{ 0, NULL }
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};
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static const value_string backing_store_vals[] = {
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{ 0, "NotUseful" },
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{ 1, "WhenMapped" },
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{ 2, "Always" },
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{ 0, NULL }
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};
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static const value_string border_pixmap_vals[] = {
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{ 0, "CopyFromParent" },
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{ 0, NULL }
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};
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static const value_string button_vals[] = {
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{ 0x8000, "AnyButton" },
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{ 0, NULL }
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};
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static const value_string cap_style_vals[] = {
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{ 0, "NotLast" },
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{ 1, "Butt" },
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{ 2, "Round" },
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{ 3, "Projecting" },
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{ 0, NULL }
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};
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static const value_string class_vals[] = {
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{ 0, "Cursor" },
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{ 1, "Tile" },
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{ 2, "Stipple" },
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{ 0, NULL }
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};
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static const value_string close_down_mode_vals[] = {
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{ 0, "Destroy" },
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{ 1, "RetainPermanent" },
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{ 2, "RetainTemporary" },
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{ 0, NULL }
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};
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static const value_string colormap_state_vals[] = {
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{ 0, "Uninstalled" },
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{ 1, "Installed" },
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{ 0, NULL }
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};
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static const value_string coordinate_mode_vals[] = {
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{ 0, "Origin" },
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{ 1, "Previous" },
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{ 0, NULL }
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};
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static const value_string destination_vals[] = {
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{ 0, "PointerWindow" },
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{ 1, "InputFocus" },
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{ 0, NULL }
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};
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static const value_string direction_vals[] = {
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{ 0, "RaiseLowest" },
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{ 1, "LowerHighest" },
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{ 0, NULL }
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};
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static const value_string event_detail_vals[] = {
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{ 0, "Ancestor" },
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{ 1, "Virtual" },
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{ 2, "Inferior" },
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{ 3, "Nonlinear" },
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{ 4, "NonlinearVirtual" },
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{ 0, NULL }
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};
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#define FAMILY_INTERNET 0
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#define FAMILY_DECNET 1
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#define FAMILY_CHAOS 2
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static const value_string family_vals[] = {
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{ FAMILY_INTERNET, "Internet" },
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{ FAMILY_DECNET, "DECnet" },
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{ FAMILY_CHAOS, "Chaos" },
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{ 0, NULL }
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};
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static const value_string fill_rule_vals[] = {
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{ 0, "EvenOdd" },
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{ 1, "Winding" },
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{ 0, NULL }
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};
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static const value_string fill_style_vals[] = {
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{ 0, "Solid" },
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{ 1, "Tiled" },
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{ 2, "Stippled" },
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{ 3, "OpaqueStippled" },
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{ 0, NULL }
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};
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static const value_string focus_detail_vals[] = {
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{ 0, "Ancestor" },
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{ 1, "Virtual" },
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{ 2, "Inferior" },
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{ 3, "Nonlinear" },
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{ 4, "NonlinearVirtual" },
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{ 5, "Pointer" },
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{ 6, "PointerRoot" },
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{ 7, "None" },
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{ 0, NULL }
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};
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static const value_string focus_mode_vals[] = {
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{ 0, "Normal" },
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{ 1, "Grab" },
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{ 2, "Ungrab" },
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{ 3, "WhileGrabbed" },
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{ 0, NULL }
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};
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static const value_string focus_vals[] = {
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{ 0, "None" },
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{ 1, "PointerRoot" },
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{ 0, NULL }
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};
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static const value_string function_vals[] = {
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{ 0, "Clear" },
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{ 1, "And" },
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{ 2, "AndReverse" },
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{ 3, "Copy" },
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{ 4, "AndInverted" },
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{ 5, "NoOp" },
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{ 6, "Xor" },
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{ 7, "Or" },
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{ 8, "Nor" },
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{ 9, "Equiv" },
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{ 10, "Invert" },
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{ 11, "OrReverse" },
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{ 12, "CopyInverted" },
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{ 13, "OrInverted" },
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{ 14, "Nand" },
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{ 15, "Set" },
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{ 0, NULL }
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};
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static const value_string grab_mode_vals[] = {
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{ 0, "Normal" },
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{ 1, "Grab" },
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{ 2, "Ungrab" },
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{ 0, NULL }
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};
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static const value_string grab_status_vals[] = {
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{ 0, "Success" },
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{ 1, "AlreadyGrabbed" },
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{ 2, "InvalidTime" },
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{ 3, "NotViewable" },
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{ 4, "Frozen" },
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{ 0, NULL }
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};
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static const value_string gravity_vals[] = {
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{ 1, "NorthWest" },
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{ 2, "North" },
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{ 3, "NorthEast" },
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{ 4, "West" },
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{ 5, "Center" },
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{ 6, "East" },
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{ 7, "SouthWest" },
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{ 8, "South" },
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{ 9, "SouthEast" },
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{ 10, "Static" },
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{ 0, NULL }
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};
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static const value_string image_format_vals[] = {
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{ 0, "Bitmap" },
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{ 1, "XYPixmap" },
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{ 2, "ZPixmap" },
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{ 0, NULL }
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};
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static const value_string image_pixmap_format_vals[] = {
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{ 1, "XYPixmap" },
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{ 2, "ZPixmap" },
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{ 0, NULL }
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};
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|
|
|
static const value_string join_style_vals[] = {
|
|
{ 0, "Miter" },
|
|
{ 1, "Round" },
|
|
{ 2, "Bevel" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
static const value_string key_vals[] = {
|
|
{ 0, "AnyKey" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
#include "packet-x11-keysym.h"
|
|
|
|
static const value_string line_style_vals[] = {
|
|
{ 0, "Solid" },
|
|
{ 1, "OnOffDash" },
|
|
{ 2, "DoubleDash" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
static const value_string mode_vals[] = {
|
|
{ 0, "Replace" },
|
|
{ 1, "Prepend" },
|
|
{ 2, "Append" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
static const value_string on_off_vals[] = {
|
|
{ 0, "Off" },
|
|
{ 1, "On" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
static const value_string place_vals[] = {
|
|
{ 0, "Top" },
|
|
{ 1, "Bottom" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
static const value_string property_state_vals[] = {
|
|
{ 0, "NewValue" },
|
|
{ 1, "Deleted" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
static const value_string visibility_state_vals[] = {
|
|
{ 0, "Unobscured" },
|
|
{ 1, "PartiallyObscured" },
|
|
{ 2, "FullyObscured" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
/* Requestcodes. From <X11/Xproto.h>. */
|
|
#define X_CreateWindow 1
|
|
#define X_ChangeWindowAttributes 2
|
|
#define X_GetWindowAttributes 3
|
|
#define X_DestroyWindow 4
|
|
#define X_DestroySubwindows 5
|
|
#define X_ChangeSaveSet 6
|
|
#define X_ReparentWindow 7
|
|
#define X_MapWindow 8
|
|
#define X_MapSubwindows 9
|
|
#define X_UnmapWindow 10
|
|
#define X_UnmapSubwindows 11
|
|
#define X_ConfigureWindow 12
|
|
#define X_CirculateWindow 13
|
|
#define X_GetGeometry 14
|
|
#define X_QueryTree 15
|
|
#define X_InternAtom 16
|
|
#define X_GetAtomName 17
|
|
#define X_ChangeProperty 18
|
|
#define X_DeleteProperty 19
|
|
#define X_GetProperty 20
|
|
#define X_ListProperties 21
|
|
#define X_SetSelectionOwner 22
|
|
#define X_GetSelectionOwner 23
|
|
#define X_ConvertSelection 24
|
|
#define X_SendEvent 25
|
|
#define X_GrabPointer 26
|
|
#define X_UngrabPointer 27
|
|
#define X_GrabButton 28
|
|
#define X_UngrabButton 29
|
|
#define X_ChangeActivePointerGrab 30
|
|
#define X_GrabKeyboard 31
|
|
#define X_UngrabKeyboard 32
|
|
#define X_GrabKey 33
|
|
#define X_UngrabKey 34
|
|
#define X_AllowEvents 35
|
|
#define X_GrabServer 36
|
|
#define X_UngrabServer 37
|
|
#define X_QueryPointer 38
|
|
#define X_GetMotionEvents 39
|
|
#define X_TranslateCoords 40
|
|
#define X_WarpPointer 41
|
|
#define X_SetInputFocus 42
|
|
#define X_GetInputFocus 43
|
|
#define X_QueryKeymap 44
|
|
#define X_OpenFont 45
|
|
#define X_CloseFont 46
|
|
#define X_QueryFont 47
|
|
#define X_QueryTextExtents 48
|
|
#define X_ListFonts 49
|
|
#define X_ListFontsWithInfo 50
|
|
#define X_SetFontPath 51
|
|
#define X_GetFontPath 52
|
|
#define X_CreatePixmap 53
|
|
#define X_FreePixmap 54
|
|
#define X_CreateGC 55
|
|
#define X_ChangeGC 56
|
|
#define X_CopyGC 57
|
|
#define X_SetDashes 58
|
|
#define X_SetClipRectangles 59
|
|
#define X_FreeGC 60
|
|
#define X_ClearArea 61
|
|
#define X_CopyArea 62
|
|
#define X_CopyPlane 63
|
|
#define X_PolyPoint 64
|
|
#define X_PolyLine 65
|
|
#define X_PolySegment 66
|
|
#define X_PolyRectangle 67
|
|
#define X_PolyArc 68
|
|
#define X_FillPoly 69
|
|
#define X_PolyFillRectangle 70
|
|
#define X_PolyFillArc 71
|
|
#define X_PutImage 72
|
|
#define X_GetImage 73
|
|
#define X_PolyText8 74
|
|
#define X_PolyText16 75
|
|
#define X_ImageText8 76
|
|
#define X_ImageText16 77
|
|
#define X_CreateColormap 78
|
|
#define X_FreeColormap 79
|
|
#define X_CopyColormapAndFree 80
|
|
#define X_InstallColormap 81
|
|
#define X_UninstallColormap 82
|
|
#define X_ListInstalledColormaps 83
|
|
#define X_AllocColor 84
|
|
#define X_AllocNamedColor 85
|
|
#define X_AllocColorCells 86
|
|
#define X_AllocColorPlanes 87
|
|
#define X_FreeColors 88
|
|
#define X_StoreColors 89
|
|
#define X_StoreNamedColor 90
|
|
#define X_QueryColors 91
|
|
#define X_LookupColor 92
|
|
#define X_CreateCursor 93
|
|
#define X_CreateGlyphCursor 94
|
|
#define X_FreeCursor 95
|
|
#define X_RecolorCursor 96
|
|
#define X_QueryBestSize 97
|
|
#define X_QueryExtension 98
|
|
#define X_ListExtensions 99
|
|
#define X_ChangeKeyboardMapping 100
|
|
#define X_GetKeyboardMapping 101
|
|
#define X_ChangeKeyboardControl 102
|
|
#define X_GetKeyboardControl 103
|
|
#define X_Bell 104
|
|
#define X_ChangePointerControl 105
|
|
#define X_GetPointerControl 106
|
|
#define X_SetScreenSaver 107
|
|
#define X_GetScreenSaver 108
|
|
#define X_ChangeHosts 109
|
|
#define X_ListHosts 110
|
|
#define X_SetAccessControl 111
|
|
#define X_SetCloseDownMode 112
|
|
#define X_KillClient 113
|
|
#define X_RotateProperties 114
|
|
#define X_ForceScreenSaver 115
|
|
#define X_SetPointerMapping 116
|
|
#define X_GetPointerMapping 117
|
|
#define X_SetModifierMapping 118
|
|
#define X_GetModifierMapping 119
|
|
#define X_NoOperation 127
|
|
#define X_FirstExtension 128
|
|
#define X_LastExtension 255
|
|
|
|
static const value_string opcode_vals[] = {
|
|
{ INITIAL_CONN, "Initial connection request" },
|
|
{ X_CreateWindow, "CreateWindow" },
|
|
{ X_ChangeWindowAttributes, "ChangeWindowAttributes" },
|
|
{ X_GetWindowAttributes, "GetWindowAttributes" },
|
|
{ X_DestroyWindow, "DestroyWindow" },
|
|
{ X_DestroySubwindows, "DestroySubwindows" },
|
|
{ X_ChangeSaveSet, "ChangeSaveSet" },
|
|
{ X_ReparentWindow, "ReparentWindow" },
|
|
{ X_MapWindow, "MapWindow" },
|
|
{ X_MapSubwindows, "MapSubwindows" },
|
|
{ X_UnmapWindow, "UnmapWindow" },
|
|
{ X_UnmapSubwindows, "UnmapSubwindows" },
|
|
{ X_ConfigureWindow, "ConfigureWindow" },
|
|
{ X_CirculateWindow, "CirculateWindow" },
|
|
{ X_GetGeometry, "GetGeometry" },
|
|
{ X_QueryTree, "QueryTree" },
|
|
{ X_InternAtom, "InternAtom" },
|
|
{ X_GetAtomName, "GetAtomName" },
|
|
{ X_ChangeProperty, "ChangeProperty" },
|
|
{ X_DeleteProperty, "DeleteProperty" },
|
|
{ X_GetProperty, "GetProperty" },
|
|
{ X_ListProperties, "ListProperties" },
|
|
{ X_SetSelectionOwner, "SetSelectionOwner" },
|
|
{ X_GetSelectionOwner, "GetSelectionOwner" },
|
|
{ X_ConvertSelection, "ConvertSelection" },
|
|
{ X_SendEvent, "SendEvent" },
|
|
{ X_GrabPointer, "GrabPointer" },
|
|
{ X_UngrabPointer, "UngrabPointer" },
|
|
{ X_GrabButton, "GrabButton" },
|
|
{ X_UngrabButton, "UngrabButton" },
|
|
{ X_ChangeActivePointerGrab, "ChangeActivePointerGrab" },
|
|
{ X_GrabKeyboard, "GrabKeyboard" },
|
|
{ X_UngrabKeyboard, "UngrabKeyboard" },
|
|
{ X_GrabKey, "GrabKey" },
|
|
{ X_UngrabKey, "UngrabKey" },
|
|
{ X_AllowEvents, "AllowEvents" },
|
|
{ X_GrabServer, "GrabServer" },
|
|
{ X_UngrabServer, "UngrabServer" },
|
|
{ X_QueryPointer, "QueryPointer" },
|
|
{ X_GetMotionEvents, "GetMotionEvents" },
|
|
{ X_TranslateCoords, "TranslateCoordinates" },
|
|
{ X_WarpPointer, "WarpPointer" },
|
|
{ X_SetInputFocus, "SetInputFocus" },
|
|
{ X_GetInputFocus, "GetInputFocus" },
|
|
{ X_QueryKeymap, "QueryKeymap" },
|
|
{ X_OpenFont, "OpenFont" },
|
|
{ X_CloseFont, "CloseFont" },
|
|
{ X_QueryFont, "QueryFont" },
|
|
{ X_QueryTextExtents, "QueryTextExtents" },
|
|
{ X_ListFonts, "ListFonts" },
|
|
{ X_ListFontsWithInfo, "ListFontsWithInfo" },
|
|
{ X_SetFontPath, "SetFontPath" },
|
|
{ X_GetFontPath, "GetFontPath" },
|
|
{ X_CreatePixmap, "CreatePixmap" },
|
|
{ X_FreePixmap, "FreePixmap" },
|
|
{ X_CreateGC, "CreateGC" },
|
|
{ X_ChangeGC, "ChangeGC" },
|
|
{ X_CopyGC, "CopyGC" },
|
|
{ X_SetDashes, "SetDashes" },
|
|
{ X_SetClipRectangles, "SetClipRectangles" },
|
|
{ X_FreeGC, "FreeGC" },
|
|
{ X_ClearArea, "ClearArea" },
|
|
{ X_CopyArea, "CopyArea" },
|
|
{ X_CopyPlane, "CopyPlane" },
|
|
{ X_PolyPoint, "PolyPoint" },
|
|
{ X_PolyLine, "PolyLine" },
|
|
{ X_PolySegment, "PolySegment" },
|
|
{ X_PolyRectangle, "PolyRectangle" },
|
|
{ X_PolyArc, "PolyArc" },
|
|
{ X_FillPoly, "FillPoly" },
|
|
{ X_PolyFillRectangle, "PolyFillRectangle" },
|
|
{ X_PolyFillArc, "PolyFillArc" },
|
|
{ X_PutImage, "PutImage" },
|
|
{ X_GetImage, "GetImage" },
|
|
{ X_PolyText8, "PolyText8" },
|
|
{ X_PolyText16, "PolyText16" },
|
|
{ X_ImageText8, "ImageText8" },
|
|
{ X_ImageText16, "ImageText16" },
|
|
{ X_CreateColormap, "CreateColormap" },
|
|
{ X_FreeColormap, "FreeColormap" },
|
|
{ X_CopyColormapAndFree, "CopyColormapAndFree" },
|
|
{ X_InstallColormap, "InstallColormap" },
|
|
{ X_UninstallColormap, "UninstallColormap" },
|
|
{ X_ListInstalledColormaps, "ListInstalledColormaps" },
|
|
{ X_AllocColor, "AllocColor" },
|
|
{ X_AllocNamedColor, "AllocNamedColor" },
|
|
{ X_AllocColorCells, "AllocColorCells" },
|
|
{ X_AllocColorPlanes, "AllocColorPlanes" },
|
|
{ X_FreeColors, "FreeColors" },
|
|
{ X_StoreColors, "StoreColors" },
|
|
{ X_StoreNamedColor, "StoreNamedColor" },
|
|
{ X_QueryColors, "QueryColors" },
|
|
{ X_LookupColor, "LookupColor" },
|
|
{ X_CreateCursor, "CreateCursor" },
|
|
{ X_CreateGlyphCursor, "CreateGlyphCursor" },
|
|
{ X_FreeCursor, "FreeCursor" },
|
|
{ X_RecolorCursor, "RecolorCursor" },
|
|
{ X_QueryBestSize, "QueryBestSize" },
|
|
{ X_QueryExtension, "QueryExtension" },
|
|
{ X_ListExtensions, "ListExtensions" },
|
|
{ X_ChangeKeyboardMapping, "ChangeKeyboardMapping" },
|
|
{ X_GetKeyboardMapping, "GetKeyboardMapping" },
|
|
{ X_ChangeKeyboardControl, "ChangeKeyboardControl" },
|
|
{ X_GetKeyboardControl, "GetKeyboardControl" },
|
|
{ X_Bell, "Bell" },
|
|
{ X_ChangePointerControl, "ChangePointerControl" },
|
|
{ X_GetPointerControl, "GetPointerControl" },
|
|
{ X_SetScreenSaver, "SetScreenSaver" },
|
|
{ X_GetScreenSaver, "GetScreenSaver" },
|
|
{ X_ChangeHosts, "ChangeHosts" },
|
|
{ X_ListHosts, "ListHosts" },
|
|
{ X_SetAccessControl, "SetAccessControl" },
|
|
{ X_SetCloseDownMode, "SetCloseDownMode" },
|
|
{ X_KillClient, "KillClient" },
|
|
{ X_RotateProperties, "RotateProperties" },
|
|
{ X_ForceScreenSaver, "ForceScreenSaver" },
|
|
{ X_SetPointerMapping, "SetPointerMapping" },
|
|
{ X_GetPointerMapping, "GetPointerMapping" },
|
|
{ X_SetModifierMapping, "SetModifierMapping" },
|
|
{ X_GetModifierMapping, "GetModifierMapping" },
|
|
{ X_NoOperation, "NoOperation" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
/* Eventscodes. From <X11/X.h>. */
|
|
#define KeyPress 2
|
|
#define KeyRelease 3
|
|
#define ButtonPress 4
|
|
#define ButtonRelease 5
|
|
#define MotionNotify 6
|
|
#define EnterNotify 7
|
|
#define LeaveNotify 8
|
|
#define FocusIn 9
|
|
#define FocusOut 10
|
|
#define KeymapNotify 11
|
|
#define Expose 12
|
|
#define GraphicsExpose 13
|
|
#define NoExpose 14
|
|
#define VisibilityNotify 15
|
|
#define CreateNotify 16
|
|
#define DestroyNotify 17
|
|
#define UnmapNotify 18
|
|
#define MapNotify 19
|
|
#define MapRequest 20
|
|
#define ReparentNotify 21
|
|
#define ConfigureNotify 22
|
|
#define ConfigureRequest 23
|
|
#define GravityNotify 24
|
|
#define ResizeRequest 25
|
|
#define CirculateNotify 26
|
|
#define CirculateRequest 27
|
|
#define PropertyNotify 28
|
|
#define SelectionClear 29
|
|
#define SelectionRequest 30
|
|
#define SelectionNotify 31
|
|
#define ColormapNotify 32
|
|
#define ClientMessage 33
|
|
#define MappingNotify 34
|
|
#define FirstExtensionEvent 64
|
|
#define LastExtensionEvent 127
|
|
|
|
static const value_string eventcode_vals[] = {
|
|
{ KeyPress, "KeyPress" },
|
|
{ KeyRelease, "KeyRelease" },
|
|
{ ButtonPress, "ButtonPress" },
|
|
{ ButtonRelease, "ButtonRelease" },
|
|
{ MotionNotify, "MotionNotify" },
|
|
{ EnterNotify, "EnterNotify" },
|
|
{ LeaveNotify, "LeaveNotify" },
|
|
{ FocusIn, "FocusIn" },
|
|
{ FocusOut, "FocusOut" },
|
|
{ KeymapNotify, "KeymapNotify" },
|
|
{ Expose, "Expose" },
|
|
{ GraphicsExpose, "GraphicsExpose" },
|
|
{ NoExpose, "NoExpose" },
|
|
{ VisibilityNotify, "VisibilityNotify" },
|
|
{ CreateNotify, "CreateNotify" },
|
|
{ DestroyNotify, "DestroyNotify" },
|
|
{ UnmapNotify, "UnmapNotify" },
|
|
{ MapNotify, "MapNotify" },
|
|
{ MapRequest, "MapRequest" },
|
|
{ ReparentNotify, "ReparentNotify" },
|
|
{ ConfigureNotify, "ConfigureNotify" },
|
|
{ ConfigureRequest, "ConfigureRequest" },
|
|
{ GravityNotify, "GravityNotify" },
|
|
{ ResizeRequest, "ResizeRequest" },
|
|
{ CirculateNotify, "CirculateNotify" },
|
|
{ CirculateRequest, "CirculateRequest" },
|
|
{ PropertyNotify, "PropertyNotify" },
|
|
{ SelectionClear, "SelectionClear" },
|
|
{ SelectionRequest, "SelectionRequest" },
|
|
{ SelectionNotify, "SelectionNotify" },
|
|
{ ColormapNotify, "ColormapNotify" },
|
|
{ ClientMessage, "ClientMessage" },
|
|
{ MappingNotify, "MappingNotify" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
/* Errorcodes. From <X11/X.h> */
|
|
#define Success 0 /* everything's okay */
|
|
#define BadRequest 1 /* bad request code */
|
|
#define BadValue 2 /* int parameter out of range */
|
|
#define BadWindow 3 /* parameter not a Window */
|
|
#define BadPixmap 4 /* parameter not a Pixmap */
|
|
#define BadAtom 5 /* parameter not an Atom */
|
|
#define BadCursor 6 /* parameter not a Cursor */
|
|
#define BadFont 7 /* parameter not a Font */
|
|
#define BadMatch 8 /* parameter mismatch */
|
|
#define BadDrawable 9 /* parameter not a Pixmap or Window */
|
|
#define BadAccess 10 /* depending on context:
|
|
- key/button already grabbed
|
|
- attempt to free an illegal
|
|
cmap entry
|
|
- attempt to store into a read-only
|
|
color map entry.
|
|
- attempt to modify the access control
|
|
list from other than the local host.
|
|
*/
|
|
#define BadAlloc 11 /* insufficient resources */
|
|
#define BadColor 12 /* no such colormap */
|
|
#define BadGC 13 /* parameter not a GC */
|
|
#define BadIDChoice 14 /* choice not in range or already used */
|
|
#define BadName 15 /* font or color name doesn't exist */
|
|
#define BadLength 16 /* Request length incorrect */
|
|
#define BadImplementation 17 /* server is defective */
|
|
|
|
#define FirstExtensionError 128
|
|
#define LastExtensionError 255
|
|
|
|
static const value_string errorcode_vals[] = {
|
|
{ Success, "Success" },
|
|
{ BadRequest, "BadRequest" },
|
|
{ BadValue, "BadValue" },
|
|
{ BadWindow, "BadWindow" },
|
|
{ BadPixmap, "BadPixmap" },
|
|
{ BadAtom, "BadAtom" },
|
|
{ BadCursor, "BadCursor" },
|
|
{ BadFont, "BadFont" },
|
|
{ BadMatch, "BadMatch" },
|
|
{ BadDrawable, "BadDrawable" },
|
|
{ BadAccess, "BadAccess" },
|
|
{ BadAlloc, "BadAlloc" },
|
|
{ BadColor, "BadColor" },
|
|
{ BadGC, "BadGC" },
|
|
{ BadIDChoice, "BadIDChoice" },
|
|
{ BadName, "BadName" },
|
|
{ BadLength, "BadLength" },
|
|
{ BadImplementation, "BadImplementation" },
|
|
{ FirstExtensionError, "FirstExtensionError" },
|
|
{ LastExtensionError, "LastExtensionError" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
static const value_string ordering_vals[] = {
|
|
{ 0, "UnSorted" },
|
|
{ 1, "YSorted" },
|
|
{ 2, "YXSorted" },
|
|
{ 3, "YXBanded" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
static const value_string plane_mask_vals[] = {
|
|
{ 0xFFFFFFFF, "AllPlanes" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
static const value_string pointer_keyboard_mode_vals[] = {
|
|
{ 0, "Synchronous" },
|
|
{ 1, "Asynchronous" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
static const value_string revert_to_vals[] = {
|
|
{ 0, "None" },
|
|
{ 1, "PointerRoot" },
|
|
{ 2, "Parent" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
static const value_string insert_delete_vals[] = {
|
|
{ 0, "Insert" },
|
|
{ 1, "Delete" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
static const value_string screen_saver_mode_vals[] = {
|
|
{ 0, "Reset" },
|
|
{ 1, "Activate" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
static const value_string shape_vals[] = {
|
|
{ 0, "Complex" },
|
|
{ 1, "Nonconvex" },
|
|
{ 2, "Convex" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
static const value_string stack_mode_vals[] = {
|
|
{ 0, "Above" },
|
|
{ 1, "Below" },
|
|
{ 2, "TopIf" },
|
|
{ 3, "BottomIf" },
|
|
{ 4, "Opposite" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
static const value_string subwindow_mode_vals[] = {
|
|
{ 0, "ClipByChildren" },
|
|
{ 1, "IncludeInferiors" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
static const value_string window_class_vals[] = {
|
|
{ 0, "CopyFromParent" },
|
|
{ 1, "InputOutput" },
|
|
{ 2, "InputOnly" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
static const value_string yes_no_default_vals[] = {
|
|
{ 0, "No" },
|
|
{ 1, "Yes" },
|
|
{ 2, "Default" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
static const value_string zero_is_any_property_type_vals[] = {
|
|
{ 0, "AnyPropertyType" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
static const value_string zero_is_none_vals[] = {
|
|
{ 0, "None" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
/* we have not seen packet before. */
|
|
#define PACKET_IS_NEW(pinfo) \
|
|
(!((pinfo)->fd->flags.visited))
|
|
|
|
/************************************************************************
|
|
*** ***
|
|
*** F I E L D D E C O D I N G M A C R O S ***
|
|
*** ***
|
|
************************************************************************/
|
|
|
|
#define VALUE8(tvb, offset) (tvb_get_guint8(tvb, offset))
|
|
#define VALUE16(tvb, offset) (little_endian ? tvb_get_letohs(tvb, offset) : tvb_get_ntohs(tvb, offset))
|
|
#define VALUE32(tvb, offset) (little_endian ? tvb_get_letohl(tvb, offset) : tvb_get_ntohl(tvb, offset))
|
|
|
|
#define FIELD8(name) (field8(tvb, offsetp, t, hf_x11_##name, little_endian))
|
|
#define FIELD16(name) (field16(tvb, offsetp, t, hf_x11_##name, little_endian))
|
|
#define FIELD32(name) (field32(tvb, offsetp, t, hf_x11_##name, little_endian))
|
|
|
|
#define BITFIELD(TYPE, position, name) {\
|
|
int unused;\
|
|
int save = *offsetp;\
|
|
proto_tree_add_item(bitmask_tree, hf_x11_##position##_##name, tvb, bitmask_offset, \
|
|
bitmask_size, little_endian); \
|
|
if (bitmask_value & proto_registrar_get_nth(hf_x11_##position##_##name) -> bitmask) {\
|
|
TYPE(name);\
|
|
unused = save + 4 - *offsetp;\
|
|
if (unused)\
|
|
proto_tree_add_item(t, hf_x11_unused, tvb, *offsetp, unused, little_endian);\
|
|
*offsetp = save + 4;\
|
|
}\
|
|
}
|
|
|
|
#define FLAG(position, name) {\
|
|
proto_tree_add_boolean(bitmask_tree, hf_x11_##position##_mask##_##name, tvb, bitmask_offset, bitmask_size, bitmask_value); }
|
|
|
|
#define FLAG_IF_NONZERO(position, name) do {\
|
|
if (bitmask_value & proto_registrar_get_nth(hf_x11_##position##_mask##_##name) -> bitmask)\
|
|
proto_tree_add_boolean(bitmask_tree, hf_x11_##position##_mask##_##name, tvb, bitmask_offset, bitmask_size, bitmask_value); } while (0)
|
|
|
|
#define ATOM(name) { atom(tvb, offsetp, t, hf_x11_##name, little_endian); }
|
|
#define BITGRAVITY(name) { gravity(tvb, offsetp, t, hf_x11_##name, "Forget"); }
|
|
#define BITMASK(name, size) {\
|
|
proto_item *ti; \
|
|
guint32 bitmask_value; \
|
|
int bitmask_offset; \
|
|
int bitmask_size; \
|
|
proto_tree *bitmask_tree; \
|
|
bitmask_value = ((size == 1) ? (guint32)VALUE8(tvb, *offsetp) : \
|
|
((size == 2) ? (guint32)VALUE16(tvb, *offsetp) : \
|
|
(guint32)VALUE32(tvb, *offsetp))); \
|
|
bitmask_offset = *offsetp; \
|
|
bitmask_size = size; \
|
|
ti = proto_tree_add_uint(t, hf_x11_##name##_mask, tvb, *offsetp, size, bitmask_value); \
|
|
bitmask_tree = proto_item_add_subtree(ti, ett_x11_##name##_mask); \
|
|
*offsetp += size;
|
|
#define ENDBITMASK }
|
|
#define BITMASK8(name) BITMASK(name, 1);
|
|
#define BITMASK16(name) BITMASK(name, 2);
|
|
#define BITMASK32(name) BITMASK(name, 4);
|
|
#define BOOL(name) (add_boolean(tvb, offsetp, t, hf_x11_##name))
|
|
#define BUTTON(name) FIELD8(name)
|
|
#define CARD8(name) FIELD8(name)
|
|
#define CARD16(name) (FIELD16(name))
|
|
#define CARD32(name) (FIELD32(name))
|
|
#define COLOR_FLAGS(name) colorFlags(tvb, offsetp, t)
|
|
#define COLORMAP(name) FIELD32(name)
|
|
#define CURSOR(name) FIELD32(name)
|
|
#define DRAWABLE(name) FIELD32(name)
|
|
#define ENUM8(name) (FIELD8(name))
|
|
#define ENUM16(name) (FIELD16(name))
|
|
#define FONT(name) FIELD32(name)
|
|
#define FONTABLE(name) FIELD32(name)
|
|
#define GCONTEXT(name) FIELD32(name)
|
|
#define INT8(name) FIELD8(name)
|
|
#define INT16(name) FIELD16(name)
|
|
#define INT32(name) FIELD32(name)
|
|
#define KEYCODE(name) FIELD8(name)
|
|
#define KEYCODE_DECODED(name, keycode, mask) do { \
|
|
proto_tree_add_uint_format(t, hf_x11_##name, tvb, offset, 1, \
|
|
keycode, "keycode: %d (%s)", \
|
|
keycode, keycode2keysymString(state->keycodemap, \
|
|
state->first_keycode, state->keysyms_per_keycode, \
|
|
state->modifiermap, state->keycodes_per_modifier, \
|
|
keycode, mask)); \
|
|
++offset; \
|
|
} while (0)
|
|
|
|
#define LISTofARC(name) { listOfArc(tvb, offsetp, t, hf_x11_##name, (next_offset - *offsetp) / 12, little_endian); }
|
|
#define LISTofATOM(name, length) { listOfAtom(tvb, offsetp, t, hf_x11_##name, (length) / 4, little_endian); }
|
|
#define LISTofBYTE(name, length) { listOfByte(tvb, offsetp, t, hf_x11_##name, (length), little_endian); }
|
|
#define LISTofCARD8(name, length) { listOfByte(tvb, offsetp, t, hf_x11_##name, (length), little_endian); }
|
|
#define LISTofIPADDRESS(name, length) { listOfByte(tvb, offsetp, t, hf_x11_##name, (length), FALSE); }
|
|
#define LISTofCARD32(name, length) { listOfCard32(tvb, offsetp, t, hf_x11_##name, hf_x11_##name##_item, (length) / 4, little_endian); }
|
|
#define LISTofCOLORITEM(name, length) { listOfColorItem(tvb, offsetp, t, hf_x11_##name, (length) / 12, little_endian); }
|
|
#define LISTofKEYCODE(map, name, length) { listOfKeycode(tvb, offsetp, t, hf_x11_##name, map, (length), little_endian); }
|
|
#define LISTofKEYSYM(name, map, keycode_first, keycode_count, \
|
|
keysyms_per_keycode) {\
|
|
listOfKeysyms(tvb, offsetp, t, hf_x11_##name, hf_x11_##name##_item, map, (keycode_first), (keycode_count), (keysyms_per_keycode), little_endian); }
|
|
#define LISTofPOINT(name, length) { listOfPoint(tvb, offsetp, t, hf_x11_##name, (length) / 4, little_endian); }
|
|
#define LISTofRECTANGLE(name) { listOfRectangle(tvb, offsetp, t, hf_x11_##name, (next_offset - *offsetp) / 8, little_endian); }
|
|
#define LISTofSEGMENT(name) { listOfSegment(tvb, offsetp, t, hf_x11_##name, (next_offset - *offsetp) / 8, little_endian); }
|
|
#define LISTofSTRING8(name, length) { listOfString8(tvb, offsetp, t, hf_x11_##name, hf_x11_##name##_string, (length), little_endian); }
|
|
#define LISTofTEXTITEM8(name) { listOfTextItem(tvb, offsetp, t, hf_x11_##name, FALSE, next_offset, little_endian); }
|
|
#define LISTofTEXTITEM16(name) { listOfTextItem(tvb, offsetp, t, hf_x11_##name, TRUE, next_offset, little_endian); }
|
|
#define OPCODE() { opcode = FIELD8(opcode); }
|
|
#define PIXMAP(name) { FIELD32(name); }
|
|
#define REQUEST_LENGTH() (requestLength(tvb, offsetp, t, little_endian))
|
|
#define SETofEVENT(name) { setOfEvent(tvb, offsetp, t, little_endian); }
|
|
#define SETofDEVICEEVENT(name) { setOfDeviceEvent(tvb, offsetp, t, little_endian);}
|
|
#define SETofKEYMASK(name) { setOfKeyButMask(tvb, offsetp, t, little_endian, 0); }
|
|
#define SETofKEYBUTMASK(name) { setOfKeyButMask(tvb, offsetp, t, little_endian, 1); }
|
|
#define SETofPOINTEREVENT(name) { setOfPointerEvent(tvb, offsetp, t, little_endian); }
|
|
#define STRING8(name, length) { string8(tvb, offsetp, t, hf_x11_##name, length); }
|
|
#define STRING16(name, length) { string16(tvb, offsetp, t, hf_x11_##name, hf_x11_##name##_bytes, length, little_endian); }
|
|
#define TIMESTAMP(name){ timestamp(tvb, offsetp, t, hf_x11_##name, little_endian); }
|
|
#define UNDECODED(x) { proto_tree_add_item(t, hf_x11_undecoded, tvb, *offsetp, x, little_endian); *offsetp += x; }
|
|
#define UNUSED(x) { proto_tree_add_item(t, hf_x11_unused, tvb, *offsetp, x, little_endian); *offsetp += x; }
|
|
#define PAD() { if (next_offset - *offsetp > 0) proto_tree_add_item(t, hf_x11_unused, tvb, *offsetp, next_offset - *offsetp, little_endian); *offsetp = next_offset; }
|
|
#define WINDOW(name) { FIELD32(name); }
|
|
#define WINGRAVITY(name) { gravity(tvb, offsetp, t, hf_x11_##name, "Unmap"); }
|
|
|
|
#define VISUALID(name) { gint32 v = VALUE32(tvb, *offsetp); \
|
|
proto_tree_add_uint_format(t, hf_x11_##name, tvb, *offsetp, 4, v, "Visualid: 0x%08x%s", v, \
|
|
v ? "" : " (CopyFromParent)"); *offsetp += 4; }
|
|
#define REPLY(name) FIELD8(name);
|
|
#define REPLYLENGTH(name) FIELD32(name);
|
|
|
|
#define EVENTCONTENTS_COMMON() do { \
|
|
TIMESTAMP(time); \
|
|
WINDOW(rootwindow); \
|
|
WINDOW(eventwindow); \
|
|
WINDOW(childwindow); \
|
|
INT16(root_x); \
|
|
INT16(root_y); \
|
|
INT16(event_x); \
|
|
INT16(event_y); \
|
|
setOfKeyButMask(tvb, offsetp, t, little_endian, 1); \
|
|
} while (0)
|
|
|
|
#define SEQUENCENUMBER_REPLY(name) do { \
|
|
guint16 seqno; \
|
|
\
|
|
seqno = VALUE16(tvb, *offsetp); \
|
|
proto_tree_add_uint_format(t, hf_x11_reply_##name, tvb, \
|
|
*offsetp, sizeof(seqno), seqno, \
|
|
"sequencenumber: %d (%s)", \
|
|
(int)seqno, \
|
|
val_to_str(opcode, state->opcode_vals, "<Unknown opcode %d>")); \
|
|
*offsetp += sizeof(seqno); \
|
|
} while (0)
|
|
|
|
#define REPLYCONTENTS_COMMON() do { \
|
|
REPLY(reply); \
|
|
proto_tree_add_item(t, hf_x11_undecoded, tvb, offset, \
|
|
1, little_endian); \
|
|
++offset; \
|
|
SEQUENCENUMBER_REPLY(sequencenumber); \
|
|
REPLYLENGTH(replylength); \
|
|
proto_tree_add_item(t, hf_x11_undecoded, tvb, offset, \
|
|
tvb_reported_length_remaining(tvb, offset), little_endian); \
|
|
offset += tvb_reported_length_remaining(tvb, offset); \
|
|
} while (0)
|
|
|
|
|
|
#define HANDLE_REPLY(plen, length_remaining, str, func) do { \
|
|
if (length_remaining < plen) { \
|
|
if (x11_desegment && pinfo->can_desegment) { \
|
|
pinfo->desegment_offset = offset; \
|
|
pinfo->desegment_len = plen - length_remaining;\
|
|
return; \
|
|
} else { \
|
|
; /* XXX yes, what then? Need to skip/join. */ \
|
|
} \
|
|
} \
|
|
if (length_remaining > plen) \
|
|
length_remaining = plen; \
|
|
next_tvb = tvb_new_subset(tvb, offset, length_remaining, plen); \
|
|
\
|
|
if (sep == NULL) { \
|
|
if (check_col(pinfo->cinfo, COL_INFO)) \
|
|
col_add_str(pinfo->cinfo, COL_INFO, str); \
|
|
sep = ":"; \
|
|
} \
|
|
\
|
|
TRY { \
|
|
func(next_tvb, pinfo, tree, sep, state, little_endian); \
|
|
} \
|
|
\
|
|
CATCH(BoundsError) { \
|
|
RETHROW; \
|
|
} \
|
|
CATCH(ReportedBoundsError) { \
|
|
show_reported_bounds_error(next_tvb, pinfo, tree); \
|
|
} \
|
|
ENDTRY; \
|
|
\
|
|
sep = ","; \
|
|
} while (0)
|
|
|
|
static void
|
|
dissect_x11_initial_reply(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree,
|
|
const char *sep, x11_conv_data_t *volatile state,
|
|
gboolean little_endian);
|
|
|
|
static void
|
|
dissect_x11_reply(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree,
|
|
const char *volatile sep, x11_conv_data_t *volatile state,
|
|
gboolean little_endian);
|
|
|
|
static void
|
|
dissect_x11_error(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree,
|
|
const char *volatile sep, x11_conv_data_t *volatile state,
|
|
gboolean little_endian);
|
|
|
|
static void
|
|
dissect_x11_event(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree,
|
|
const char *volatile sep, x11_conv_data_t *volatile state,
|
|
gboolean little_endian);
|
|
|
|
static x11_conv_data_t *
|
|
x11_stateinit(conversation_t *conversation);
|
|
|
|
static const char *
|
|
keysymString(guint32 v);
|
|
|
|
|
|
/************************************************************************
|
|
*** ***
|
|
*** D E C O D I N G F I E L D S ***
|
|
*** ***
|
|
************************************************************************/
|
|
|
|
static void atom(tvbuff_t *tvb, int *offsetp, proto_tree *t, int hf,
|
|
gboolean little_endian)
|
|
{
|
|
const char *interpretation = NULL;
|
|
|
|
guint32 v = VALUE32(tvb, *offsetp);
|
|
if (v >= 1 && v < array_length(atom_predefined_interpretation))
|
|
interpretation = atom_predefined_interpretation[v];
|
|
else if (v)
|
|
interpretation = "Not a predefined atom";
|
|
else {
|
|
header_field_info *hfi = proto_registrar_get_nth(hf);
|
|
if (hfi -> strings)
|
|
interpretation = match_strval(v, cVALS(hfi -> strings));
|
|
}
|
|
if (!interpretation) interpretation = "error in Xlib client program ?";
|
|
proto_tree_add_uint_format(t, hf, tvb, *offsetp, 4, v, "%s: %u (%s)",
|
|
proto_registrar_get_nth(hf) -> name, v, interpretation);
|
|
*offsetp += 4;
|
|
}
|
|
|
|
static guint32 add_boolean(tvbuff_t *tvb, int *offsetp, proto_tree *t, int hf)
|
|
{
|
|
guint32 v = VALUE8(tvb, *offsetp);
|
|
proto_tree_add_boolean(t, hf, tvb, *offsetp, 1, v);
|
|
*offsetp += 1;
|
|
return v;
|
|
}
|
|
|
|
static void colorFlags(tvbuff_t *tvb, int *offsetp, proto_tree *t)
|
|
{
|
|
unsigned do_red_green_blue = VALUE8(tvb, *offsetp);
|
|
proto_item *ti;
|
|
proto_tree *tt;
|
|
|
|
if (do_red_green_blue) {
|
|
int sep = FALSE;
|
|
char *buffer, *bp;
|
|
|
|
buffer=ep_alloc(512);
|
|
|
|
bp = buffer + MIN(512, g_snprintf(buffer, 512, "flags: "));
|
|
|
|
if (do_red_green_blue & 0x1) {
|
|
bp += MIN(512-(bp-buffer),
|
|
g_snprintf(bp, 512-(bp-buffer), "DoRed"));
|
|
sep = TRUE;
|
|
}
|
|
|
|
if (do_red_green_blue & 0x2) {
|
|
if (sep) bp += MIN(512-(bp-buffer),
|
|
g_snprintf(bp, 512-(bp-buffer), " | "));
|
|
bp += MIN(512-(bp-buffer),
|
|
g_snprintf(bp, 512-(bp-buffer), "DoGreen"));
|
|
sep = TRUE;
|
|
}
|
|
|
|
if (do_red_green_blue & 0x4) {
|
|
if (sep) bp += MIN(512-(bp-buffer),
|
|
g_snprintf(bp, 512-(bp-buffer), " | "));
|
|
bp += MIN(512-(bp-buffer),
|
|
g_snprintf(bp, 512-(bp-buffer), "DoBlue"));
|
|
sep = TRUE;
|
|
}
|
|
|
|
if (do_red_green_blue & 0xf8) {
|
|
if (sep) bp += MIN(512-(bp-buffer),
|
|
g_snprintf(bp, 512-(bp-buffer), " + "));
|
|
MIN(512-(bp-buffer),
|
|
g_snprintf(bp, 512-(bp-buffer), "trash"));
|
|
}
|
|
|
|
ti = proto_tree_add_uint_format(t, hf_x11_coloritem_flags, tvb, *offsetp, 1, do_red_green_blue,
|
|
"%s", buffer);
|
|
tt = proto_item_add_subtree(ti, ett_x11_color_flags);
|
|
if (do_red_green_blue & 0x1)
|
|
proto_tree_add_boolean(tt, hf_x11_coloritem_flags_do_red, tvb, *offsetp, 1,
|
|
do_red_green_blue & 0x1);
|
|
if (do_red_green_blue & 0x2)
|
|
proto_tree_add_boolean(tt, hf_x11_coloritem_flags_do_green, tvb, *offsetp, 1,
|
|
do_red_green_blue & 0x2);
|
|
if (do_red_green_blue & 0x4)
|
|
proto_tree_add_boolean(tt, hf_x11_coloritem_flags_do_blue, tvb, *offsetp, 1,
|
|
do_red_green_blue & 0x4);
|
|
if (do_red_green_blue & 0xf8)
|
|
proto_tree_add_boolean(tt, hf_x11_coloritem_flags_unused, tvb, *offsetp, 1,
|
|
do_red_green_blue & 0xf8);
|
|
} else
|
|
proto_tree_add_uint_format(t, hf_x11_coloritem_flags, tvb, *offsetp, 1, do_red_green_blue,
|
|
"flags: none");
|
|
*offsetp += 1;
|
|
}
|
|
|
|
static void gravity(tvbuff_t *tvb, int *offsetp, proto_tree *t,
|
|
int hf, const char *nullInterpretation)
|
|
{
|
|
guint8 v = VALUE8(tvb, *offsetp);
|
|
|
|
if (!v)
|
|
proto_tree_add_uint_format(t, hf, tvb, *offsetp, 1, v, "%s: 0 (%s)",
|
|
proto_registrar_get_nth(hf) -> name,
|
|
nullInterpretation);
|
|
else
|
|
proto_tree_add_uint(t, hf, tvb, *offsetp, 1, v);
|
|
*offsetp += 1;
|
|
}
|
|
|
|
static void listOfArc(tvbuff_t *tvb, int *offsetp, proto_tree *t, int hf,
|
|
int length, gboolean little_endian)
|
|
{
|
|
proto_item *ti = proto_tree_add_item(t, hf, tvb, *offsetp, length * 8, little_endian);
|
|
proto_tree *tt = proto_item_add_subtree(ti, ett_x11_list_of_arc);
|
|
while(length--) {
|
|
gint16 x = VALUE16(tvb, *offsetp);
|
|
gint16 y = VALUE16(tvb, *offsetp + 2);
|
|
guint16 width = VALUE16(tvb, *offsetp + 4);
|
|
guint16 height = VALUE16(tvb, *offsetp + 6);
|
|
gint16 angle1 = VALUE16(tvb, *offsetp + 8);
|
|
gint16 angle2 = VALUE16(tvb, *offsetp + 10);
|
|
|
|
proto_item *tti = proto_tree_add_none_format(tt, hf_x11_arc, tvb, *offsetp, 12,
|
|
"arc: %dx%d+%d+%d, angle %d -> %d (%f degrees -> %f degrees)",
|
|
width, height, x, y, angle1, angle2,
|
|
angle1 / 64.0, angle2 / 64.0);
|
|
proto_tree *ttt = proto_item_add_subtree(tti, ett_x11_arc);
|
|
proto_tree_add_int(ttt, hf_x11_arc_x, tvb, *offsetp, 2, x);
|
|
*offsetp += 2;
|
|
proto_tree_add_int(ttt, hf_x11_arc_y, tvb, *offsetp, 2, y);
|
|
*offsetp += 2;
|
|
proto_tree_add_uint(ttt, hf_x11_arc_width, tvb, *offsetp, 2, y);
|
|
*offsetp += 2;
|
|
proto_tree_add_uint(ttt, hf_x11_arc_height, tvb, *offsetp, 2, y);
|
|
*offsetp += 2;
|
|
proto_tree_add_int(ttt, hf_x11_arc_angle1, tvb, *offsetp, 2, y);
|
|
*offsetp += 2;
|
|
proto_tree_add_int(ttt, hf_x11_arc_angle2, tvb, *offsetp, 2, y);
|
|
*offsetp += 2;
|
|
}
|
|
}
|
|
|
|
static void listOfAtom(tvbuff_t *tvb, int *offsetp, proto_tree *t, int hf,
|
|
int length, gboolean little_endian)
|
|
{
|
|
proto_item *ti = proto_tree_add_item(t, hf, tvb, *offsetp, length * 4, little_endian);
|
|
proto_tree *tt = proto_item_add_subtree(ti, ett_x11_list_of_atom);
|
|
while(length--)
|
|
atom(tvb, offsetp, tt, hf_x11_properties_item, little_endian);
|
|
}
|
|
|
|
static void listOfByte(tvbuff_t *tvb, int *offsetp, proto_tree *t, int hf,
|
|
int length, gboolean little_endian)
|
|
{
|
|
if (length <= 0) length = 1;
|
|
proto_tree_add_item(t, hf, tvb, *offsetp, length, little_endian);
|
|
*offsetp += length;
|
|
}
|
|
|
|
static void listOfCard32(tvbuff_t *tvb, int *offsetp, proto_tree *t, int hf,
|
|
int hf_item, int length, gboolean little_endian)
|
|
{
|
|
proto_item *ti = proto_tree_add_item(t, hf, tvb, *offsetp, length * 4, little_endian);
|
|
proto_tree *tt = proto_item_add_subtree(ti, ett_x11_list_of_card32);
|
|
while(length--) {
|
|
proto_tree_add_uint(tt, hf_item, tvb, *offsetp, 4, VALUE32(tvb, *offsetp));
|
|
*offsetp += 4;
|
|
}
|
|
}
|
|
|
|
static void listOfColorItem(tvbuff_t *tvb, int *offsetp, proto_tree *t, int hf,
|
|
int length, gboolean little_endian)
|
|
{
|
|
proto_item *ti = proto_tree_add_item(t, hf, tvb, *offsetp, length * 8, little_endian);
|
|
proto_tree *tt = proto_item_add_subtree(ti, ett_x11_list_of_color_item);
|
|
while(length--) {
|
|
proto_item *tti;
|
|
proto_tree *ttt;
|
|
unsigned do_red_green_blue;
|
|
guint16 red, green, blue;
|
|
char *buffer;
|
|
char *bp;
|
|
const char *sep;
|
|
|
|
buffer=ep_alloc(1024);
|
|
red = VALUE16(tvb, *offsetp + 4);
|
|
green = VALUE16(tvb, *offsetp + 6);
|
|
blue = VALUE16(tvb, *offsetp + 8);
|
|
do_red_green_blue = VALUE8(tvb, *offsetp + 10);
|
|
|
|
bp = buffer + MIN(1024, g_snprintf(buffer, 1024, "colorItem: "));
|
|
sep = "";
|
|
if (do_red_green_blue & 0x1) {
|
|
bp += MIN(1024-(bp-buffer),
|
|
g_snprintf(bp, 1024-(bp-buffer), "red = %d", red));
|
|
sep = ", ";
|
|
}
|
|
if (do_red_green_blue & 0x2) {
|
|
bp += MIN(1024-(bp-buffer),
|
|
g_snprintf(bp, 1024-(bp-buffer), "%sgreen = %d", sep, green));
|
|
sep = ", ";
|
|
}
|
|
if (do_red_green_blue & 0x4)
|
|
bp += MIN(1024-(bp-buffer),
|
|
g_snprintf(bp, 1024-(bp-buffer), "%sblue = %d", sep, blue));
|
|
|
|
tti = proto_tree_add_none_format(tt, hf_x11_coloritem, tvb, *offsetp, 12, "%s", buffer);
|
|
ttt = proto_item_add_subtree(tti, ett_x11_color_item);
|
|
proto_tree_add_item(ttt, hf_x11_coloritem_pixel, tvb, *offsetp, 4, little_endian);
|
|
*offsetp += 4;
|
|
proto_tree_add_item(ttt, hf_x11_coloritem_red, tvb, *offsetp, 2, little_endian);
|
|
*offsetp += 2;
|
|
proto_tree_add_item(ttt, hf_x11_coloritem_green, tvb, *offsetp, 2, little_endian);
|
|
*offsetp += 2;
|
|
proto_tree_add_item(ttt, hf_x11_coloritem_blue, tvb, *offsetp, 2, little_endian);
|
|
*offsetp += 2;
|
|
colorFlags(tvb, offsetp, ttt);
|
|
proto_tree_add_item(ttt, hf_x11_coloritem_unused, tvb, *offsetp, 1, little_endian);
|
|
*offsetp += 1;
|
|
}
|
|
}
|
|
|
|
static GTree *keysymTable = NULL;
|
|
|
|
static gint compareGuint32(gconstpointer a, gconstpointer b)
|
|
{
|
|
return GPOINTER_TO_INT(b) - GPOINTER_TO_INT(a);
|
|
}
|
|
|
|
static void
|
|
XConvertCase(register int sym, int *lower, int *upper)
|
|
{
|
|
*lower = sym;
|
|
*upper = sym;
|
|
switch(sym >> 8) {
|
|
case 0: /* Latin 1 */
|
|
if ((sym >= XK_A) && (sym <= XK_Z))
|
|
*lower += (XK_a - XK_A);
|
|
else if ((sym >= XK_a) && (sym <= XK_z))
|
|
*upper -= (XK_a - XK_A);
|
|
else if ((sym >= XK_Agrave) && (sym <= XK_Odiaeresis))
|
|
*lower += (XK_agrave - XK_Agrave);
|
|
else if ((sym >= XK_agrave) && (sym <= XK_odiaeresis))
|
|
*upper -= (XK_agrave - XK_Agrave);
|
|
else if ((sym >= XK_Ooblique) && (sym <= XK_Thorn))
|
|
*lower += (XK_oslash - XK_Ooblique);
|
|
else if ((sym >= XK_oslash) && (sym <= XK_thorn))
|
|
*upper -= (XK_oslash - XK_Ooblique);
|
|
break;
|
|
case 1: /* Latin 2 */
|
|
/* Assume the KeySym is a legal value (ignore discontinuities) */
|
|
if (sym == XK_Aogonek)
|
|
*lower = XK_aogonek;
|
|
else if (sym >= XK_Lstroke && sym <= XK_Sacute)
|
|
*lower += (XK_lstroke - XK_Lstroke);
|
|
else if (sym >= XK_Scaron && sym <= XK_Zacute)
|
|
*lower += (XK_scaron - XK_Scaron);
|
|
else if (sym >= XK_Zcaron && sym <= XK_Zabovedot)
|
|
*lower += (XK_zcaron - XK_Zcaron);
|
|
else if (sym == XK_aogonek)
|
|
*upper = XK_Aogonek;
|
|
else if (sym >= XK_lstroke && sym <= XK_sacute)
|
|
*upper -= (XK_lstroke - XK_Lstroke);
|
|
else if (sym >= XK_scaron && sym <= XK_zacute)
|
|
*upper -= (XK_scaron - XK_Scaron);
|
|
else if (sym >= XK_zcaron && sym <= XK_zabovedot)
|
|
*upper -= (XK_zcaron - XK_Zcaron);
|
|
else if (sym >= XK_Racute && sym <= XK_Tcedilla)
|
|
*lower += (XK_racute - XK_Racute);
|
|
else if (sym >= XK_racute && sym <= XK_tcedilla)
|
|
*upper -= (XK_racute - XK_Racute);
|
|
break;
|
|
case 2: /* Latin 3 */
|
|
/* Assume the KeySym is a legal value (ignore discontinuities) */
|
|
if (sym >= XK_Hstroke && sym <= XK_Hcircumflex)
|
|
*lower += (XK_hstroke - XK_Hstroke);
|
|
else if (sym >= XK_Gbreve && sym <= XK_Jcircumflex)
|
|
*lower += (XK_gbreve - XK_Gbreve);
|
|
else if (sym >= XK_hstroke && sym <= XK_hcircumflex)
|
|
*upper -= (XK_hstroke - XK_Hstroke);
|
|
else if (sym >= XK_gbreve && sym <= XK_jcircumflex)
|
|
*upper -= (XK_gbreve - XK_Gbreve);
|
|
else if (sym >= XK_Cabovedot && sym <= XK_Scircumflex)
|
|
*lower += (XK_cabovedot - XK_Cabovedot);
|
|
else if (sym >= XK_cabovedot && sym <= XK_scircumflex)
|
|
*upper -= (XK_cabovedot - XK_Cabovedot);
|
|
break;
|
|
case 3: /* Latin 4 */
|
|
/* Assume the KeySym is a legal value (ignore discontinuities) */
|
|
if (sym >= XK_Rcedilla && sym <= XK_Tslash)
|
|
*lower += (XK_rcedilla - XK_Rcedilla);
|
|
else if (sym >= XK_rcedilla && sym <= XK_tslash)
|
|
*upper -= (XK_rcedilla - XK_Rcedilla);
|
|
else if (sym == XK_ENG)
|
|
*lower = XK_eng;
|
|
else if (sym == XK_eng)
|
|
*upper = XK_ENG;
|
|
else if (sym >= XK_Amacron && sym <= XK_Umacron)
|
|
*lower += (XK_amacron - XK_Amacron);
|
|
else if (sym >= XK_amacron && sym <= XK_umacron)
|
|
*upper -= (XK_amacron - XK_Amacron);
|
|
break;
|
|
case 6: /* Cyrillic */
|
|
/* Assume the KeySym is a legal value (ignore discontinuities) */
|
|
if (sym >= XK_Serbian_DJE && sym <= XK_Serbian_DZE)
|
|
*lower -= (XK_Serbian_DJE - XK_Serbian_dje);
|
|
else if (sym >= XK_Serbian_dje && sym <= XK_Serbian_dze)
|
|
*upper += (XK_Serbian_DJE - XK_Serbian_dje);
|
|
else if (sym >= XK_Cyrillic_YU && sym <= XK_Cyrillic_HARDSIGN)
|
|
*lower -= (XK_Cyrillic_YU - XK_Cyrillic_yu);
|
|
else if (sym >= XK_Cyrillic_yu && sym <= XK_Cyrillic_hardsign)
|
|
*upper += (XK_Cyrillic_YU - XK_Cyrillic_yu);
|
|
break;
|
|
case 7: /* Greek */
|
|
/* Assume the KeySym is a legal value (ignore discontinuities) */
|
|
if (sym >= XK_Greek_ALPHAaccent && sym <= XK_Greek_OMEGAaccent)
|
|
*lower += (XK_Greek_alphaaccent - XK_Greek_ALPHAaccent);
|
|
else if (sym >= XK_Greek_alphaaccent && sym <= XK_Greek_omegaaccent &&
|
|
sym != XK_Greek_iotaaccentdieresis &&
|
|
sym != XK_Greek_upsilonaccentdieresis)
|
|
*upper -= (XK_Greek_alphaaccent - XK_Greek_ALPHAaccent);
|
|
else if (sym >= XK_Greek_ALPHA && sym <= XK_Greek_OMEGA)
|
|
*lower += (XK_Greek_alpha - XK_Greek_ALPHA);
|
|
else if (sym >= XK_Greek_alpha && sym <= XK_Greek_omega &&
|
|
sym != XK_Greek_finalsmallsigma)
|
|
*upper -= (XK_Greek_alpha - XK_Greek_ALPHA);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static const char *
|
|
keycode2keysymString(int *keycodemap[256], int first_keycode,
|
|
int keysyms_per_keycode,
|
|
int *modifiermap[array_length(modifiers)],
|
|
int keycodes_per_modifier,
|
|
guint32 keycode, guint32 bitmask)
|
|
{
|
|
static char *buf;
|
|
int *syms;
|
|
int groupmodkc, numlockkc, numlockmod, groupmod;
|
|
int lockmod_is_capslock = 0, lockmod_is_shiftlock = 0;
|
|
int lockmod_is_nosymbol = 1;
|
|
int modifier, kc, keysym;
|
|
|
|
if ((syms = keycodemap[keycode]) == NULL)
|
|
return "<Unknown>";
|
|
|
|
for (kc = first_keycode, groupmodkc = numlockkc = -1; kc < 256; ++kc)
|
|
for (keysym = 0; keysym < keysyms_per_keycode; ++keysym) {
|
|
if (keycodemap[kc] == NULL)
|
|
return "<Unknown>";
|
|
switch (keycodemap[kc][keysym]) {
|
|
case 0xff7e:
|
|
groupmodkc = kc;
|
|
break;
|
|
|
|
case 0xff7f:
|
|
numlockkc = kc;
|
|
break;
|
|
|
|
case 0xffe5:
|
|
lockmod_is_capslock = kc;
|
|
break;
|
|
|
|
case 0xffe6:
|
|
lockmod_is_shiftlock = kc;
|
|
break;
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* If we have not seen the modifiermap we don't know what the
|
|
* keycode translates to, but we do know it's one of the keys
|
|
* in syms (give or take a case-conversion), so we could in
|
|
* theory list them all.
|
|
*/
|
|
if (modifiermap[array_length(modifiers) - 1] == NULL) /* all or none */
|
|
return "<Unknown>";
|
|
|
|
/* find out what the numlockmodifer and groupmodifier is. */
|
|
for (modifier = 0, numlockmod = groupmod = -1;
|
|
modifier < (int)array_length(modifiers) && numlockmod == -1;
|
|
++modifier)
|
|
for (kc = 0; kc < keycodes_per_modifier; ++kc)
|
|
if (modifiermap[modifier][kc] == numlockkc)
|
|
numlockmod = modifier;
|
|
else if (modifiermap[modifier][kc] == groupmodkc)
|
|
groupmod = modifier;
|
|
|
|
/*
|
|
* ... and what the lockmodifier is interpreted as.
|
|
* (X11v4r6 ref, keyboard and pointers section.)
|
|
*/
|
|
for (kc = 0; kc < keycodes_per_modifier; ++kc)
|
|
if (modifiermap[1][kc] == lockmod_is_capslock) {
|
|
lockmod_is_shiftlock = lockmod_is_nosymbol = 0;
|
|
break;
|
|
}
|
|
else if (modifiermap[0][kc] == lockmod_is_shiftlock) {
|
|
lockmod_is_capslock = lockmod_is_nosymbol = 0;
|
|
break;
|
|
}
|
|
|
|
#if 0
|
|
/*
|
|
* This is (how I understand) the X11v4R6 protocol description given
|
|
* in A. Nye's book. It is quite different from the
|
|
* code in _XTranslateKey() in the file
|
|
* "$XConsortium: KeyBind.c /main/55 1996/02/02 14:08:55 kaleb $"
|
|
* as shipped with XFree, and doesn't work correctly, nor do I see
|
|
* how it could (e.g. the case of lower/uppercase-letters).
|
|
* -- Michael Shuldman
|
|
*/
|
|
|
|
if (numlockmod >= 0 && (bitmask & modifiermask[numlockmod])
|
|
&& ((syms[1] >= 0xff80
|
|
&& syms[1] <= 0xffbd)
|
|
|| (syms[1] >= 0x11000000
|
|
&& syms[1] <= 0x1100ffff))) {
|
|
if ((bitmask & ShiftMask) || lockmod_is_shiftlock)
|
|
return keysymString(syms[groupmod + 0]);
|
|
else
|
|
if (syms[groupmod + 1] == NoSymbol)
|
|
return keysymString(syms[groupmod + 0]);
|
|
else
|
|
return keysymString(syms[groupmod + 1]);
|
|
}
|
|
else if (!(bitmask & ShiftMask) && !(bitmask & LockMask))
|
|
return keysymString(syms[groupmod + 0]);
|
|
else if (!(bitmask & ShiftMask)
|
|
&& ((bitmask & LockMask) && lockmod_is_capslock))
|
|
if (islower(syms[groupmod + 0]))
|
|
/* return toupper(keysymString(syms[groupmod + 0])); */
|
|
return "Uppercase"; /* XXX */
|
|
else
|
|
return keysymString(syms[groupmod + 0]);
|
|
|
|
else if ((bitmask & ShiftMask)
|
|
&& ((bitmask & LockMask) && lockmod_is_capslock))
|
|
if (islower(syms[groupmod + 1]))
|
|
/* return toupper(keysymString(syms[groupmod + 1])); */
|
|
return "Uppercase"; /* XXX */
|
|
else
|
|
return keysymString(syms[groupmod + 1]);
|
|
|
|
else if ((bitmask & ShiftMask)
|
|
|| ((bitmask & LockMask) && lockmod_is_shiftlock))
|
|
return keysymString(syms[groupmod + 1]);
|
|
#else /* _XTranslateKey() based code. */
|
|
|
|
while (keysyms_per_keycode > 2
|
|
&& keycodemap[keysyms_per_keycode - 1] == NoSymbol)
|
|
--keysyms_per_keycode;
|
|
if (keysyms_per_keycode > 2
|
|
&& (groupmod >= 0 && (modifiermask[groupmod] & bitmask))) {
|
|
syms += 2;
|
|
keysyms_per_keycode -= 2;
|
|
}
|
|
|
|
if (numlockmod >= 0 && (bitmask & modifiermask[numlockmod])
|
|
&& keysyms_per_keycode > 1
|
|
&& ((syms[1] >= 0xff80 && syms[1] <= 0xffbd)
|
|
|| (syms[1] >= 0x11000000 && syms[1] <= 0x1100ffff))) {
|
|
if ((bitmask & ShiftMask)
|
|
|| (bitmask & LockMask && lockmod_is_shiftlock))
|
|
keysym = syms[0];
|
|
else
|
|
keysym = syms[1];
|
|
}
|
|
else if (!(bitmask & ShiftMask)
|
|
&& (!(bitmask & LockMask) || lockmod_is_nosymbol)) {
|
|
if (keysyms_per_keycode == 1
|
|
|| (keysyms_per_keycode > 1 && syms[1] == NoSymbol)) {
|
|
int usym;
|
|
|
|
XConvertCase(syms[0], &keysym, &usym);
|
|
}
|
|
else
|
|
keysym = syms[0];
|
|
}
|
|
else if (!(bitmask & LockMask) || !lockmod_is_capslock) {
|
|
int lsym, usym;
|
|
|
|
if (keysyms_per_keycode == 1
|
|
|| (keysyms_per_keycode > 1 && (usym = syms[1]) == NoSymbol))
|
|
XConvertCase(syms[0], &lsym, &usym);
|
|
keysym = usym;
|
|
}
|
|
else {
|
|
int lsym, usym;
|
|
|
|
if (keysyms_per_keycode == 1
|
|
|| (keysyms_per_keycode > 1 && syms[1] == NoSymbol))
|
|
keysym = syms[0];
|
|
|
|
XConvertCase(keysym, &lsym, &usym);
|
|
|
|
if (!(bitmask & ShiftMask) && keysym != syms[0]
|
|
&& ((keysym != usym) || (lsym == usym)))
|
|
XConvertCase(syms[0], &lsym, &usym);
|
|
keysym = usym;
|
|
}
|
|
|
|
if (keysym == XK_VoidSymbol)
|
|
keysym = NoSymbol;
|
|
|
|
buf=ep_alloc(32);
|
|
g_snprintf(buf, 32, "%d, \"%s\"", keysym, keysymString(keysym));
|
|
return buf;
|
|
#endif
|
|
}
|
|
|
|
static const char *keysymString(guint32 v)
|
|
{
|
|
gpointer res;
|
|
if (!keysymTable) {
|
|
|
|
/* This table is so big that we built it only if necessary */
|
|
|
|
const value_string *p = keysym_vals_source;
|
|
keysymTable = g_tree_new(compareGuint32);
|
|
for(; p -> strptr; p++)
|
|
g_tree_insert(keysymTable, GINT_TO_POINTER(p -> value), (gpointer) (p -> strptr) );
|
|
}
|
|
res = g_tree_lookup(keysymTable, GINT_TO_POINTER(v));
|
|
return res ? res : "<Unknown>";
|
|
}
|
|
|
|
static void listOfKeycode(tvbuff_t *tvb, int *offsetp, proto_tree *t, int hf,
|
|
int *modifiermap[], int keycodes_per_modifier,
|
|
gboolean little_endian)
|
|
{
|
|
proto_item *ti = proto_tree_add_item(t, hf, tvb, *offsetp,
|
|
array_length(modifiers) * keycodes_per_modifier, little_endian);
|
|
proto_tree *tt = proto_item_add_subtree(ti, ett_x11_list_of_keycode);
|
|
size_t m;
|
|
|
|
for (m = 0; m < array_length(modifiers);
|
|
++m, *offsetp += keycodes_per_modifier) {
|
|
const guint8 *p;
|
|
proto_item *tikc;
|
|
int i;
|
|
|
|
p = tvb_get_ptr(tvb, *offsetp, keycodes_per_modifier);
|
|
modifiermap[m] =
|
|
g_malloc(sizeof(*modifiermap[m]) * keycodes_per_modifier);
|
|
|
|
tikc = proto_tree_add_bytes_format(tt, hf_x11_keycodes_item, tvb,
|
|
*offsetp, keycodes_per_modifier, p, "item: ");
|
|
for(i = 0; i < keycodes_per_modifier; ++i) {
|
|
guchar c = p[i];
|
|
|
|
if (c)
|
|
proto_item_append_text(tikc, " %s=%d", modifiers[m], c);
|
|
|
|
modifiermap[m][i] = c;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void listOfKeysyms(tvbuff_t *tvb, int *offsetp, proto_tree *t, int hf,
|
|
int hf_item, int *keycodemap[256],
|
|
int keycode_first, int keycode_count,
|
|
int keysyms_per_keycode, gboolean little_endian)
|
|
{
|
|
proto_item *ti = proto_tree_add_item(t, hf, tvb, *offsetp, keycode_count * keysyms_per_keycode * 4, little_endian);
|
|
proto_tree *tt = proto_item_add_subtree(ti, ett_x11_list_of_keysyms);
|
|
proto_item *tti;
|
|
proto_tree *ttt;
|
|
int i, keycode;
|
|
|
|
DISSECTOR_ASSERT(keycode_first >= 0);
|
|
DISSECTOR_ASSERT(keycode_count >= 0);
|
|
|
|
for (keycode = keycode_first; keycode_count > 0;
|
|
++keycode, --keycode_count) {
|
|
if (keycode >= 256) {
|
|
proto_tree_add_text(tt, tvb, *offsetp, 4 * keysyms_per_keycode,
|
|
"keycode value %d is out of range", keycode);
|
|
*offsetp += 4 * keysyms_per_keycode;
|
|
continue;
|
|
}
|
|
tti = proto_tree_add_none_format(tt, hf_item, tvb, *offsetp,
|
|
4 * keysyms_per_keycode, "keysyms (keycode %d):", keycode);
|
|
|
|
ttt = proto_item_add_subtree(tti, ett_x11_keysym);
|
|
|
|
tvb_ensure_bytes_exist(tvb, *offsetp, 4 * keysyms_per_keycode);
|
|
keycodemap[keycode]
|
|
= g_malloc(sizeof(*keycodemap[keycode]) * keysyms_per_keycode);
|
|
|
|
for(i = 0; i < keysyms_per_keycode; ++i) {
|
|
/* keysymvalue = byte3 * 256 + byte4. */
|
|
guint32 v = VALUE32(tvb, *offsetp);
|
|
|
|
proto_item_append_text(tti, " %s", keysymString(v));
|
|
proto_tree_add_uint_format(ttt, hf_x11_keysyms_item_keysym,
|
|
tvb, *offsetp, 4, v,
|
|
"keysym (keycode %d): 0x%08x (%s)",
|
|
keycode, v, keysymString(v));
|
|
|
|
keycodemap[keycode][i] = v;
|
|
*offsetp += 4;
|
|
}
|
|
|
|
for (i = 1; i < keysyms_per_keycode; ++i)
|
|
if (keycodemap[keycode][i] != NoSymbol)
|
|
break;
|
|
|
|
if (i == keysyms_per_keycode) {
|
|
/* all but (possibly) first were NoSymbol. */
|
|
if (keysyms_per_keycode == 4) {
|
|
keycodemap[keycode][1] = NoSymbol;
|
|
keycodemap[keycode][2] = keycodemap[keycode][0];
|
|
keycodemap[keycode][3] = NoSymbol;
|
|
}
|
|
|
|
continue;
|
|
}
|
|
|
|
for (i = 2; i < keysyms_per_keycode; ++i)
|
|
if (keycodemap[keycode][i] != NoSymbol)
|
|
break;
|
|
if (i == keysyms_per_keycode) {
|
|
/* all but (possibly) first two were NoSymbol. */
|
|
if (keysyms_per_keycode == 4) {
|
|
keycodemap[keycode][2] = keycodemap[keycode][0];
|
|
keycodemap[keycode][3] = keycodemap[keycode][1];
|
|
}
|
|
|
|
continue;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void listOfPoint(tvbuff_t *tvb, int *offsetp, proto_tree *t, int hf,
|
|
int length, gboolean little_endian)
|
|
{
|
|
proto_item *ti = proto_tree_add_item(t, hf, tvb, *offsetp, length * 4, little_endian);
|
|
proto_tree *tt = proto_item_add_subtree(ti, ett_x11_list_of_point);
|
|
while(length--) {
|
|
gint16 x, y;
|
|
proto_item *tti;
|
|
proto_tree *ttt;
|
|
|
|
x = VALUE16(tvb, *offsetp);
|
|
y = VALUE16(tvb, *offsetp + 2);
|
|
|
|
tti = proto_tree_add_none_format(tt, hf_x11_point, tvb, *offsetp, 4, "point: (%d,%d)", x, y);
|
|
ttt = proto_item_add_subtree(tti, ett_x11_point);
|
|
proto_tree_add_int(ttt, hf_x11_point_x, tvb, *offsetp, 2, x);
|
|
*offsetp += 2;
|
|
proto_tree_add_int(ttt, hf_x11_point_y, tvb, *offsetp, 2, y);
|
|
*offsetp += 2;
|
|
}
|
|
}
|
|
|
|
static void listOfRectangle(tvbuff_t *tvb, int *offsetp, proto_tree *t, int hf,
|
|
int length, gboolean little_endian)
|
|
{
|
|
proto_item *ti = proto_tree_add_item(t, hf, tvb, *offsetp, length * 8, little_endian);
|
|
proto_tree *tt = proto_item_add_subtree(ti, ett_x11_list_of_rectangle);
|
|
while(length--) {
|
|
gint16 x, y;
|
|
unsigned width, height;
|
|
proto_item *tti;
|
|
proto_tree *ttt;
|
|
|
|
x = VALUE16(tvb, *offsetp);
|
|
y = VALUE16(tvb, *offsetp + 2);
|
|
width = VALUE16(tvb, *offsetp + 4);
|
|
height = VALUE16(tvb, *offsetp + 6);
|
|
|
|
tti = proto_tree_add_none_format(tt, hf_x11_rectangle, tvb, *offsetp, 8,
|
|
"rectangle: %dx%d+%d+%d", width, height, x, y);
|
|
ttt = proto_item_add_subtree(tti, ett_x11_rectangle);
|
|
proto_tree_add_int(ttt, hf_x11_rectangle_x, tvb, *offsetp, 2, x);
|
|
*offsetp += 2;
|
|
proto_tree_add_int(ttt, hf_x11_rectangle_y, tvb, *offsetp, 2, y);
|
|
*offsetp += 2;
|
|
proto_tree_add_uint(ttt, hf_x11_rectangle_width, tvb, *offsetp, 2, width);
|
|
*offsetp += 2;
|
|
proto_tree_add_uint(ttt, hf_x11_rectangle_height, tvb, *offsetp, 2, height);
|
|
*offsetp += 2;
|
|
}
|
|
}
|
|
|
|
static void listOfSegment(tvbuff_t *tvb, int *offsetp, proto_tree *t, int hf,
|
|
int length, gboolean little_endian)
|
|
{
|
|
proto_item *ti = proto_tree_add_item(t, hf, tvb, *offsetp, length * 8, little_endian);
|
|
proto_tree *tt = proto_item_add_subtree(ti, ett_x11_list_of_segment);
|
|
while(length--) {
|
|
gint16 x1, y1, x2, y2;
|
|
proto_item *tti;
|
|
proto_tree *ttt;
|
|
|
|
x1 = VALUE16(tvb, *offsetp);
|
|
y1 = VALUE16(tvb, *offsetp + 2);
|
|
x2 = VALUE16(tvb, *offsetp + 4);
|
|
y2 = VALUE16(tvb, *offsetp + 6);
|
|
|
|
tti = proto_tree_add_none_format(tt, hf_x11_segment, tvb, *offsetp, 8,
|
|
"segment: (%d,%d)-(%d,%d)", x1, y1, x2, y2);
|
|
ttt = proto_item_add_subtree(tti, ett_x11_segment);
|
|
proto_tree_add_item(ttt, hf_x11_segment_x1, tvb, *offsetp, 2, little_endian);
|
|
*offsetp += 2;
|
|
proto_tree_add_item(ttt, hf_x11_segment_y1, tvb, *offsetp, 2, little_endian);
|
|
*offsetp += 2;
|
|
proto_tree_add_item(ttt, hf_x11_segment_x2, tvb, *offsetp, 2, little_endian);
|
|
*offsetp += 2;
|
|
proto_tree_add_item(ttt, hf_x11_segment_y2, tvb, *offsetp, 2, little_endian);
|
|
*offsetp += 2;
|
|
}
|
|
}
|
|
|
|
/* XXX - the protocol tree code should handle non-printable characters.
|
|
Note that "non-printable characters" may depend on your locale.... */
|
|
static void stringCopy(char *dest, const char *source, int length)
|
|
{
|
|
guchar c;
|
|
while(length--) {
|
|
c = *source++;
|
|
if (!isgraph(c) && c != ' ') c = '.';
|
|
*dest++ = c;
|
|
}
|
|
*dest++ = '\0';
|
|
}
|
|
|
|
static void listOfString8(tvbuff_t *tvb, int *offsetp, proto_tree *t, int hf,
|
|
int hf_item, int length, gboolean little_endian)
|
|
{
|
|
char *s = NULL;
|
|
guint allocated = 0;
|
|
proto_item *ti;
|
|
proto_tree *tt;
|
|
int i;
|
|
|
|
/* Compute total length */
|
|
|
|
int scanning_offset = *offsetp; /* Scanning pointer */
|
|
int l;
|
|
for(i = length; i; i--) {
|
|
l = tvb_get_guint8(tvb, scanning_offset);
|
|
scanning_offset += 1 + l;
|
|
}
|
|
|
|
ti = proto_tree_add_item(t, hf, tvb, *offsetp, scanning_offset - *offsetp, little_endian);
|
|
tt = proto_item_add_subtree(ti, ett_x11_list_of_string8);
|
|
|
|
while(length--) {
|
|
unsigned l = VALUE8(tvb, *offsetp);
|
|
if (allocated < (l + 1)) {
|
|
s = ep_alloc(l + 1);
|
|
allocated = l + 1;
|
|
}
|
|
stringCopy(s, tvb_get_ptr(tvb, *offsetp + 1, l), l); /* Nothing better for now. We need a better string handling API. */
|
|
proto_tree_add_string_format(tt, hf_item, tvb, *offsetp, l + 1, s, "\"%s\"", s);
|
|
*offsetp += l + 1;
|
|
}
|
|
}
|
|
|
|
#define STRING16_MAX_DISPLAYED_LENGTH 150
|
|
|
|
static int stringIsActuallyAn8BitString(tvbuff_t *tvb, int offset, unsigned length)
|
|
{
|
|
if (length > STRING16_MAX_DISPLAYED_LENGTH) length = STRING16_MAX_DISPLAYED_LENGTH;
|
|
for(; length > 0; offset += 2, length--) {
|
|
if (tvb_get_guint8(tvb, offset))
|
|
return FALSE;
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
/* length is the length of the _byte_zone_ (that is, twice the length of the string) */
|
|
|
|
static void string16_with_buffer_preallocated(tvbuff_t *tvb, proto_tree *t,
|
|
int hf, int hf_bytes,
|
|
int offset, unsigned length,
|
|
char **s, int *sLength,
|
|
gboolean little_endian)
|
|
{
|
|
int truncated = FALSE;
|
|
unsigned l = length / 2;
|
|
|
|
if (stringIsActuallyAn8BitString(tvb, offset, l)) {
|
|
char *dp;
|
|
int soffset = offset;
|
|
|
|
if (l > STRING16_MAX_DISPLAYED_LENGTH) {
|
|
truncated = TRUE;
|
|
l = STRING16_MAX_DISPLAYED_LENGTH;
|
|
}
|
|
if (*sLength < (int) l + 3) {
|
|
*s = ep_alloc(l + 3);
|
|
*sLength = l + 3;
|
|
}
|
|
dp = *s;
|
|
*dp++ = '"';
|
|
if (truncated) l -= 3;
|
|
|
|
while(l--) {
|
|
soffset++;
|
|
*dp++ = tvb_get_guint8(tvb, soffset);
|
|
soffset++;
|
|
}
|
|
*dp++ = '"';
|
|
|
|
/* If truncated, add an ellipsis */
|
|
if (truncated) { *dp++ = '.'; *dp++ = '.'; *dp++ = '.'; }
|
|
|
|
*dp++ = '\0';
|
|
proto_tree_add_string_format(t, hf, tvb, offset, length, tvb_get_ptr(tvb, offset, length), "%s: %s",
|
|
proto_registrar_get_nth(hf) -> name, *s);
|
|
} else
|
|
proto_tree_add_item(t, hf_bytes, tvb, offset, length, little_endian);
|
|
|
|
}
|
|
|
|
static void listOfTextItem(tvbuff_t *tvb, int *offsetp, proto_tree *t, int hf,
|
|
int sizeIs16, int next_offset, gboolean little_endian)
|
|
{
|
|
int allocated = 0;
|
|
char *s = NULL;
|
|
proto_item *ti;
|
|
proto_tree *tt;
|
|
guint32 fid;
|
|
|
|
/* Compute total length */
|
|
|
|
int scanning_offset = *offsetp; /* Scanning pointer */
|
|
int l; /* Length of an individual item */
|
|
int n = 0; /* Number of items */
|
|
|
|
while(scanning_offset < next_offset) {
|
|
l = tvb_get_guint8(tvb, scanning_offset);
|
|
scanning_offset++;
|
|
if (!l) break;
|
|
n++;
|
|
scanning_offset += l == 255 ? 4 : l + (sizeIs16 ? l : 0) + 1;
|
|
}
|
|
|
|
ti = proto_tree_add_item(t, hf, tvb, *offsetp, scanning_offset - *offsetp, little_endian);
|
|
tt = proto_item_add_subtree(ti, ett_x11_list_of_text_item);
|
|
|
|
while(n--) {
|
|
unsigned l = VALUE8(tvb, *offsetp);
|
|
if (l == 255) { /* Item is a font */
|
|
fid = tvb_get_ntohl(tvb, *offsetp + 1);
|
|
proto_tree_add_uint(tt, hf_x11_textitem_font, tvb, *offsetp, 5, fid);
|
|
*offsetp += 5;
|
|
} else { /* Item is a string */
|
|
proto_item *tti;
|
|
proto_tree *ttt;
|
|
gint8 delta = VALUE8(tvb, *offsetp + 1);
|
|
if (sizeIs16) l += l;
|
|
if ((unsigned) allocated < l + 1) {
|
|
s = ep_alloc(l + 1);
|
|
allocated = l + 1;
|
|
}
|
|
stringCopy(s, tvb_get_ptr(tvb, *offsetp + 2, l), l);
|
|
tti = proto_tree_add_none_format(tt, hf_x11_textitem_string, tvb, *offsetp, l + 2,
|
|
"textitem (string): delta = %d, \"%s\"",
|
|
delta, s);
|
|
ttt = proto_item_add_subtree(tti, ett_x11_text_item);
|
|
proto_tree_add_item(ttt, hf_x11_textitem_string_delta, tvb, *offsetp + 1, 1, little_endian);
|
|
if (sizeIs16)
|
|
string16_with_buffer_preallocated(tvb, ttt, hf_x11_textitem_string_string16,
|
|
hf_x11_textitem_string_string16_bytes,
|
|
*offsetp + 2, l,
|
|
&s, &allocated,
|
|
little_endian);
|
|
else
|
|
proto_tree_add_string_format(ttt, hf_x11_textitem_string_string8, tvb,
|
|
*offsetp + 2, l, s, "\"%s\"", s);
|
|
*offsetp += l + 2;
|
|
}
|
|
}
|
|
}
|
|
|
|
static guint32 field8(tvbuff_t *tvb, int *offsetp, proto_tree *t, int hf,
|
|
gboolean little_endian)
|
|
{
|
|
guint32 v = VALUE8(tvb, *offsetp);
|
|
header_field_info *hfi = proto_registrar_get_nth(hf);
|
|
const gchar *enumValue = NULL;
|
|
|
|
if (hfi -> strings)
|
|
enumValue = match_strval(v, cVALS(hfi -> strings));
|
|
if (enumValue)
|
|
proto_tree_add_uint_format(t, hf, tvb, *offsetp, 1, v,
|
|
hfi -> display == BASE_DEC ? "%s: %u (%s)" : "%s: 0x%02x (%s)",
|
|
hfi -> name, v, enumValue);
|
|
else
|
|
proto_tree_add_item(t, hf, tvb, *offsetp, 1, little_endian);
|
|
*offsetp += 1;
|
|
return v;
|
|
}
|
|
|
|
static guint32 field16(tvbuff_t *tvb, int *offsetp, proto_tree *t, int hf,
|
|
gboolean little_endian)
|
|
{
|
|
guint32 v = VALUE16(tvb, *offsetp);
|
|
header_field_info *hfi = proto_registrar_get_nth(hf);
|
|
const gchar *enumValue = NULL;
|
|
|
|
if (hfi -> strings)
|
|
enumValue = match_strval(v, cVALS(hfi -> strings));
|
|
if (enumValue)
|
|
proto_tree_add_uint_format(t, hf, tvb, *offsetp, 2, v,
|
|
hfi -> display == BASE_DEC ? "%s: %u (%s)" : "%s: 0x%02x (%s)",
|
|
hfi -> name, v, enumValue);
|
|
else
|
|
proto_tree_add_item(t, hf, tvb, *offsetp, 2, little_endian);
|
|
*offsetp += 2;
|
|
return v;
|
|
}
|
|
|
|
static guint32 field32(tvbuff_t *tvb, int *offsetp, proto_tree *t, int hf,
|
|
gboolean little_endian)
|
|
{
|
|
guint32 v = VALUE32(tvb, *offsetp);
|
|
header_field_info *hfi = proto_registrar_get_nth(hf);
|
|
const gchar *enumValue = NULL;
|
|
const gchar *nameAsChar = hfi -> name;
|
|
|
|
if (hfi -> strings)
|
|
enumValue = match_strval(v, cVALS(hfi -> strings));
|
|
if (enumValue)
|
|
proto_tree_add_uint_format(t, hf, tvb, *offsetp, 4, v,
|
|
hfi -> display == BASE_DEC ? "%s: %u (%s)" : "%s: 0x%08x (%s)",
|
|
nameAsChar, v, enumValue);
|
|
else
|
|
proto_tree_add_uint_format(t, hf, tvb, *offsetp, 4, v,
|
|
hfi -> display == BASE_DEC ? "%s: %u" : "%s: 0x%08x",
|
|
nameAsChar, v);
|
|
*offsetp += 4;
|
|
return v;
|
|
}
|
|
|
|
static void gcAttributes(tvbuff_t *tvb, int *offsetp, proto_tree *t,
|
|
gboolean little_endian)
|
|
{
|
|
BITMASK32(gc_value);
|
|
BITFIELD(ENUM8, gc_value_mask, function);
|
|
BITFIELD(CARD32, gc_value_mask, plane_mask);
|
|
BITFIELD(CARD32, gc_value_mask, foreground);
|
|
BITFIELD(CARD32, gc_value_mask, background);
|
|
BITFIELD(CARD16, gc_value_mask, line_width);
|
|
BITFIELD(ENUM8, gc_value_mask, line_style);
|
|
BITFIELD(ENUM8, gc_value_mask, cap_style);
|
|
BITFIELD(ENUM8, gc_value_mask, join_style);
|
|
BITFIELD(ENUM8, gc_value_mask, fill_style);
|
|
BITFIELD(ENUM8, gc_value_mask, fill_rule);
|
|
BITFIELD(PIXMAP, gc_value_mask, tile);
|
|
BITFIELD(PIXMAP, gc_value_mask, stipple);
|
|
BITFIELD(INT16, gc_value_mask, tile_stipple_x_origin);
|
|
BITFIELD(INT16, gc_value_mask, tile_stipple_y_origin);
|
|
BITFIELD(FONT, gc_value_mask, font);
|
|
BITFIELD(ENUM8, gc_value_mask, subwindow_mode);
|
|
BITFIELD(BOOL, gc_value_mask, graphics_exposures);
|
|
BITFIELD(INT16, gc_value_mask, clip_x_origin);
|
|
BITFIELD(INT16, gc_value_mask, clip_y_origin);
|
|
BITFIELD(PIXMAP, gc_value_mask, clip_mask);
|
|
BITFIELD(CARD16, gc_value_mask, dash_offset);
|
|
BITFIELD(CARD8, gc_value_mask, gc_dashes);
|
|
BITFIELD(ENUM8, gc_value_mask, arc_mode);
|
|
ENDBITMASK;
|
|
}
|
|
|
|
static void gcMask(tvbuff_t *tvb, int *offsetp, proto_tree *t,
|
|
gboolean little_endian)
|
|
{
|
|
BITMASK32(gc_value);
|
|
FLAG(gc_value, function);
|
|
FLAG(gc_value, plane_mask);
|
|
FLAG(gc_value, foreground);
|
|
FLAG(gc_value, background);
|
|
FLAG(gc_value, line_width);
|
|
FLAG(gc_value, line_style);
|
|
FLAG(gc_value, cap_style);
|
|
FLAG(gc_value, join_style);
|
|
FLAG(gc_value, fill_style);
|
|
FLAG(gc_value, fill_rule);
|
|
FLAG(gc_value, tile);
|
|
FLAG(gc_value, stipple);
|
|
FLAG(gc_value, tile_stipple_x_origin);
|
|
FLAG(gc_value, tile_stipple_y_origin);
|
|
FLAG(gc_value, font);
|
|
FLAG(gc_value, subwindow_mode);
|
|
FLAG(gc_value, graphics_exposures);
|
|
FLAG(gc_value, clip_x_origin);
|
|
FLAG(gc_value, clip_y_origin);
|
|
FLAG(gc_value, clip_mask);
|
|
FLAG(gc_value, dash_offset);
|
|
FLAG(gc_value, gc_dashes);
|
|
FLAG(gc_value, arc_mode);
|
|
ENDBITMASK;
|
|
}
|
|
|
|
static guint32 requestLength(tvbuff_t *tvb, int *offsetp, proto_tree *t,
|
|
gboolean little_endian)
|
|
{
|
|
guint32 res = VALUE16(tvb, *offsetp);
|
|
proto_tree_add_uint(t, hf_x11_request_length, tvb, *offsetp, 2, res);
|
|
*offsetp += 2;
|
|
return res * 4;
|
|
}
|
|
|
|
static void setOfEvent(tvbuff_t *tvb, int *offsetp, proto_tree *t,
|
|
gboolean little_endian)
|
|
{
|
|
BITMASK32(event);
|
|
FLAG(event, KeyPress);
|
|
FLAG(event, KeyRelease);
|
|
FLAG(event, ButtonPress);
|
|
FLAG(event, ButtonRelease);
|
|
FLAG(event, EnterWindow);
|
|
FLAG(event, LeaveWindow);
|
|
FLAG(event, PointerMotion);
|
|
FLAG(event, PointerMotionHint);
|
|
FLAG(event, Button1Motion);
|
|
FLAG(event, Button2Motion);
|
|
FLAG(event, Button3Motion);
|
|
FLAG(event, Button4Motion);
|
|
FLAG(event, Button5Motion);
|
|
FLAG(event, ButtonMotion);
|
|
FLAG(event, KeymapState);
|
|
FLAG(event, Exposure);
|
|
FLAG(event, VisibilityChange);
|
|
FLAG(event, StructureNotify);
|
|
FLAG(event, ResizeRedirect);
|
|
FLAG(event, SubstructureNotify);
|
|
FLAG(event, SubstructureRedirect);
|
|
FLAG(event, FocusChange);
|
|
FLAG(event, PropertyChange);
|
|
FLAG(event, ColormapChange);
|
|
FLAG(event, OwnerGrabButton);
|
|
FLAG_IF_NONZERO(event, erroneous_bits);
|
|
ENDBITMASK;
|
|
}
|
|
|
|
static void setOfDeviceEvent(tvbuff_t *tvb, int *offsetp, proto_tree *t,
|
|
gboolean little_endian)
|
|
{
|
|
BITMASK32(do_not_propagate);
|
|
FLAG(do_not_propagate, KeyPress);
|
|
FLAG(do_not_propagate, KeyRelease);
|
|
FLAG(do_not_propagate, ButtonPress);
|
|
FLAG(do_not_propagate, ButtonRelease);
|
|
FLAG(do_not_propagate, PointerMotion);
|
|
FLAG(do_not_propagate, Button1Motion);
|
|
FLAG(do_not_propagate, Button2Motion);
|
|
FLAG(do_not_propagate, Button3Motion);
|
|
FLAG(do_not_propagate, Button4Motion);
|
|
FLAG(do_not_propagate, Button5Motion);
|
|
FLAG(do_not_propagate, ButtonMotion);
|
|
FLAG_IF_NONZERO(do_not_propagate, erroneous_bits);
|
|
ENDBITMASK;
|
|
}
|
|
|
|
|
|
static void setOfKeyButMask(tvbuff_t *tvb, int *offsetp, proto_tree *t,
|
|
gboolean little_endian, gboolean butmask)
|
|
{
|
|
proto_item *ti;
|
|
guint32 bitmask_value;
|
|
int bitmask_offset;
|
|
int bitmask_size;
|
|
proto_tree *bitmask_tree;
|
|
|
|
bitmask_value = VALUE16(tvb, *offsetp);
|
|
bitmask_offset = *offsetp;
|
|
bitmask_size = 2;
|
|
|
|
if (!butmask && bitmask_value == 0x8000)
|
|
proto_tree_add_uint_format(t, hf_x11_modifiers_mask_AnyModifier, tvb, *offsetp, 2, 0x8000,
|
|
"modifiers-masks: 0x8000 (AnyModifier)");
|
|
else {
|
|
ti = proto_tree_add_uint(t, hf_x11_modifiers_mask, tvb, *offsetp, 2,
|
|
bitmask_value);
|
|
bitmask_tree = proto_item_add_subtree(ti, ett_x11_set_of_key_mask);
|
|
FLAG(modifiers, Shift);
|
|
FLAG(modifiers, Lock);
|
|
FLAG(modifiers, Control);
|
|
FLAG(modifiers, Mod1);
|
|
FLAG(modifiers, Mod2);
|
|
FLAG(modifiers, Mod3);
|
|
FLAG(modifiers, Mod4);
|
|
FLAG(modifiers, Mod5);
|
|
|
|
if (butmask) {
|
|
FLAG(modifiers, Button1);
|
|
FLAG(modifiers, Button2);
|
|
FLAG(modifiers, Button3);
|
|
FLAG(modifiers, Button4);
|
|
FLAG(modifiers, Button5);
|
|
}
|
|
|
|
if (butmask)
|
|
FLAG_IF_NONZERO(keybut, erroneous_bits);
|
|
else
|
|
FLAG_IF_NONZERO(modifiers, erroneous_bits);
|
|
}
|
|
*offsetp += 2;
|
|
}
|
|
|
|
static void setOfPointerEvent(tvbuff_t *tvb, int *offsetp, proto_tree *t,
|
|
gboolean little_endian)
|
|
{
|
|
BITMASK16(pointer_event);
|
|
FLAG(pointer_event, ButtonPress);
|
|
FLAG(pointer_event, ButtonRelease);
|
|
FLAG(pointer_event, EnterWindow);
|
|
FLAG(pointer_event, LeaveWindow);
|
|
FLAG(pointer_event, PointerMotion);
|
|
FLAG(pointer_event, PointerMotionHint);
|
|
FLAG(pointer_event, Button1Motion);
|
|
FLAG(pointer_event, Button2Motion);
|
|
FLAG(pointer_event, Button3Motion);
|
|
FLAG(pointer_event, Button4Motion);
|
|
FLAG(pointer_event, Button5Motion);
|
|
FLAG(pointer_event, ButtonMotion);
|
|
FLAG(pointer_event, KeymapState);
|
|
FLAG_IF_NONZERO(pointer_event, erroneous_bits);
|
|
ENDBITMASK;
|
|
}
|
|
|
|
static void string8(tvbuff_t *tvb, int *offsetp, proto_tree *t,
|
|
int hf, unsigned length)
|
|
{
|
|
const guint8 *p;
|
|
char *s;
|
|
|
|
p = tvb_get_ptr(tvb, *offsetp, length);
|
|
s = ep_alloc(length + 1);
|
|
stringCopy(s, p, length);
|
|
proto_tree_add_string(t, hf, tvb, *offsetp, length, s);
|
|
*offsetp += length;
|
|
}
|
|
|
|
/* The length is the length of the _byte_zone_ (twice the length of the string) */
|
|
|
|
static void string16(tvbuff_t *tvb, int *offsetp, proto_tree *t, int hf,
|
|
int hf_bytes, unsigned length, gboolean little_endian)
|
|
{
|
|
char *s = NULL;
|
|
unsigned l = 0;
|
|
|
|
length += length;
|
|
string16_with_buffer_preallocated(tvb, t, hf, hf_bytes, *offsetp, length,
|
|
&s, &l, little_endian);
|
|
|
|
*offsetp += length;
|
|
}
|
|
|
|
static void timestamp(tvbuff_t *tvb, int *offsetp, proto_tree *t, int hf,
|
|
gboolean little_endian)
|
|
{
|
|
guint32 v = VALUE32(tvb, *offsetp);
|
|
|
|
if (!v)
|
|
proto_tree_add_uint_format(t, hf, tvb, *offsetp, 4, 0, "%s: 0 (CurrentTime)",
|
|
proto_registrar_get_nth(hf) -> name);
|
|
else
|
|
proto_tree_add_uint(t, hf, tvb, *offsetp, 4, v);
|
|
*offsetp += 4;
|
|
}
|
|
|
|
static void windowAttributes(tvbuff_t *tvb, int *offsetp, proto_tree *t,
|
|
gboolean little_endian)
|
|
{
|
|
BITMASK32(window_value);
|
|
BITFIELD(PIXMAP, window_value_mask, background_pixmap);
|
|
BITFIELD(CARD32, window_value_mask, background_pixel);
|
|
BITFIELD(PIXMAP, window_value_mask, border_pixmap);
|
|
BITFIELD(CARD32, window_value_mask, border_pixel);
|
|
BITFIELD(BITGRAVITY, window_value_mask, bit_gravity);
|
|
BITFIELD(WINGRAVITY, window_value_mask, win_gravity);
|
|
BITFIELD(ENUM8, window_value_mask, backing_store);
|
|
BITFIELD(CARD32, window_value_mask, backing_planes);
|
|
BITFIELD(CARD32, window_value_mask, backing_pixel);
|
|
BITFIELD(BOOL, window_value_mask, override_redirect);
|
|
BITFIELD(BOOL, window_value_mask, save_under);
|
|
BITFIELD(SETofEVENT, window_value_mask, event_mask);
|
|
BITFIELD(SETofDEVICEEVENT, window_value_mask, do_not_propagate_mask);
|
|
BITFIELD(COLORMAP, window_value_mask, colormap);
|
|
BITFIELD(CURSOR, window_value_mask, cursor);
|
|
ENDBITMASK;
|
|
}
|
|
|
|
static void x11_init_protocol(void)
|
|
{
|
|
x11_conv_data_t *state;
|
|
|
|
for (state = x11_conv_data_list; state != NULL; state = state->next) {
|
|
g_hash_table_destroy(state->seqtable);
|
|
g_hash_table_destroy(state->valtable);
|
|
}
|
|
x11_conv_data_list = NULL;
|
|
}
|
|
|
|
/************************************************************************
|
|
*** ***
|
|
*** G U E S S I N G T H E B Y T E O R D E R I N G ***
|
|
*** ***
|
|
************************************************************************/
|
|
|
|
/* If we can't guess, we return TRUE (that is little_endian), cause
|
|
I'm developing on a Linux box :-). The (non-)guess isn't cached
|
|
however, so we may have more luck next time. I'm quite conservative
|
|
in my assertions, cause once it's cached, it's stay in cache, and
|
|
we may be fooled up by a packet starting with the end of a request
|
|
started in a previous packet...
|
|
*/
|
|
|
|
static int numberOfBitSetTable[] = { 0, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3, 4 };
|
|
|
|
static int numberOfBitSet(tvbuff_t *tvb, int offset, int maskLength)
|
|
{
|
|
int res = 0;
|
|
while(maskLength--) {
|
|
int c = tvb_get_guint8(tvb, offset);
|
|
offset++;
|
|
res += numberOfBitSetTable[c & 0xf] + numberOfBitSetTable[c >> 4];
|
|
}
|
|
return res;
|
|
}
|
|
|
|
static int listOfStringLengthConsistent(tvbuff_t *tvb, int offset, int length, int listLength)
|
|
{
|
|
if (listLength > length) return FALSE;
|
|
while(listLength--) {
|
|
int l;
|
|
if (!tvb_bytes_exist(tvb, offset, 1)) return TRUE;
|
|
l = tvb_get_guint8(tvb, offset);
|
|
if (!l) break;
|
|
l++;
|
|
if (l > length) return FALSE;
|
|
if (!tvb_bytes_exist(tvb, offset, l)) return TRUE;
|
|
offset += l;
|
|
length -= l;
|
|
}
|
|
if (length > 3) return FALSE;
|
|
return TRUE;
|
|
}
|
|
|
|
static int rounded4(int n)
|
|
{
|
|
int remainder = n % 4;
|
|
int res = n / 4;
|
|
if (remainder) res++;
|
|
return res;
|
|
}
|
|
|
|
/* We assume the order to be consistent, until proven wrong. */
|
|
|
|
static gboolean consistentWithOrder(int length, tvbuff_t *tvb, int offset, guint16 (*v16)(tvbuff_t *, gint))
|
|
{
|
|
switch(tvb_get_guint8(tvb, offset)) {
|
|
case X_CreateWindow:
|
|
return !tvb_bytes_exist(tvb, offset, 32) || length == 8 + numberOfBitSet(tvb, offset + 7 * 4, 4);
|
|
|
|
case X_ChangeWindowAttributes:
|
|
case X_ChangeGC:
|
|
return !tvb_bytes_exist(tvb, offset, 12) || length == 3 + numberOfBitSet(tvb, offset + 8, 4);
|
|
|
|
case X_GetWindowAttributes:
|
|
case X_DestroyWindow:
|
|
case X_DestroySubwindows:
|
|
case X_ChangeSaveSet:
|
|
case X_MapWindow:
|
|
case X_MapSubwindows:
|
|
case X_UnmapWindow:
|
|
case X_UnmapSubwindows:
|
|
case X_CirculateWindow:
|
|
case X_GetGeometry:
|
|
case X_QueryTree:
|
|
case X_GetAtomName:
|
|
case X_ListProperties:
|
|
case X_GetSelectionOwner:
|
|
case X_UngrabPointer:
|
|
case X_UngrabKeyboard:
|
|
case X_AllowEvents:
|
|
case X_QueryPointer:
|
|
case X_CloseFont:
|
|
case X_QueryFont:
|
|
case X_FreePixmap:
|
|
case X_FreeGC:
|
|
case X_FreeColormap:
|
|
case X_InstallColormap:
|
|
case X_UninstallColormap:
|
|
case X_ListInstalledColormaps:
|
|
case X_FreeCursor:
|
|
case X_GetKeyboardMapping:
|
|
case X_KillClient:
|
|
return length == 2;
|
|
|
|
case X_ReparentWindow:
|
|
case X_SetSelectionOwner:
|
|
case X_ChangeActivePointerGrab:
|
|
case X_GrabKeyboard:
|
|
case X_GrabKey:
|
|
case X_GetMotionEvents:
|
|
case X_TranslateCoords:
|
|
case X_CreatePixmap:
|
|
case X_CopyGC:
|
|
case X_ClearArea:
|
|
case X_CreateColormap:
|
|
case X_AllocColor:
|
|
case X_AllocColorPlanes:
|
|
return length == 4;
|
|
|
|
case X_ConfigureWindow:
|
|
return !tvb_bytes_exist(tvb, offset, 10) || length == 3 + numberOfBitSet(tvb, offset + 8, 2);
|
|
|
|
case X_InternAtom:
|
|
case X_QueryExtension:
|
|
return !tvb_bytes_exist(tvb, offset, 6) || length == 2 + rounded4(v16(tvb, offset + 4));
|
|
|
|
case X_ChangeProperty:
|
|
{
|
|
int multiplier, type;
|
|
if (!tvb_bytes_exist(tvb, offset, 17)) return TRUE;
|
|
type = tvb_get_guint8(tvb, 16);
|
|
if (type != 8 && type != 16 && type != 32) return FALSE;
|
|
multiplier = type == 8 ? 1 : type == 16 ? 2 : 4;
|
|
if (!tvb_bytes_exist(tvb, offset, 24)) return TRUE;
|
|
return length == 6 + rounded4((v16 == tvb_get_letohs ? tvb_get_letohl : tvb_get_ntohl)(tvb, offset + 20) * multiplier);
|
|
}
|
|
|
|
case X_DeleteProperty:
|
|
case X_UngrabButton:
|
|
case X_UngrabKey:
|
|
case X_SetInputFocus:
|
|
case X_CopyColormapAndFree:
|
|
case X_AllocColorCells:
|
|
case X_QueryBestSize:
|
|
case X_ChangePointerControl:
|
|
case X_SetScreenSaver:
|
|
return length == 3;
|
|
|
|
case X_GetProperty:
|
|
case X_ConvertSelection:
|
|
case X_GrabPointer:
|
|
case X_GrabButton:
|
|
case X_WarpPointer:
|
|
return length == 6;
|
|
|
|
case X_SendEvent:
|
|
return length == 11;
|
|
|
|
case X_GrabServer:
|
|
case X_UngrabServer:
|
|
case X_GetInputFocus:
|
|
case X_QueryKeymap:
|
|
case X_GetFontPath:
|
|
case X_ListExtensions:
|
|
case X_GetKeyboardControl:
|
|
case X_Bell:
|
|
case X_GetPointerControl:
|
|
case X_GetScreenSaver:
|
|
case X_ListHosts:
|
|
case X_SetAccessControl:
|
|
case X_SetCloseDownMode:
|
|
case X_ForceScreenSaver:
|
|
case X_GetPointerMapping:
|
|
case X_GetModifierMapping:
|
|
return length == 1;
|
|
|
|
case X_OpenFont:
|
|
case X_AllocNamedColor:
|
|
case X_LookupColor:
|
|
return !tvb_bytes_exist(tvb, offset, 10) || length == 3 + rounded4(v16(tvb, offset + 8));
|
|
|
|
case X_QueryTextExtents:
|
|
return length >= 2;
|
|
|
|
case X_ListFonts:
|
|
case X_ListFontsWithInfo:
|
|
case X_ChangeHosts:
|
|
return !tvb_bytes_exist(tvb, offset, 8) || length == 2 + rounded4(v16(tvb, offset + 6));
|
|
|
|
case X_SetFontPath:
|
|
if (length < 2) return FALSE;
|
|
if (!tvb_bytes_exist(tvb, offset, 8)) return TRUE;
|
|
return listOfStringLengthConsistent(tvb, offset + 8, (length - 2) * 4, v16(tvb, offset + 4));
|
|
|
|
case X_CreateGC:
|
|
return !tvb_bytes_exist(tvb, offset, 16) || length == 4 + numberOfBitSet(tvb, offset + 12, 4);
|
|
|
|
case X_SetDashes:
|
|
return !tvb_bytes_exist(tvb, offset, 12) || length == 3 + rounded4(v16(tvb, offset + 10));
|
|
|
|
case X_SetClipRectangles:
|
|
case X_PolySegment:
|
|
case X_PolyRectangle:
|
|
case X_PolyFillRectangle:
|
|
return length >= 3 && (length - 3) % 2 == 0;
|
|
|
|
case X_CopyArea:
|
|
return length == 7;
|
|
|
|
case X_CopyPlane:
|
|
case X_CreateCursor:
|
|
case X_CreateGlyphCursor:
|
|
return length == 8;
|
|
|
|
case X_PolyPoint:
|
|
case X_PolyLine:
|
|
case X_FreeColors:
|
|
return length >= 3;
|
|
|
|
case X_PolyArc:
|
|
case X_PolyFillArc:
|
|
return length >= 3 && (length - 3) % 3 == 0;
|
|
|
|
case X_FillPoly:
|
|
case X_ImageText8:
|
|
return length >= 4;
|
|
|
|
case X_PutImage:
|
|
return length >= 6;
|
|
|
|
case X_GetImage:
|
|
case X_RecolorCursor:
|
|
return length == 5;
|
|
|
|
case X_PolyText8:
|
|
if (length < 4) return FALSE;
|
|
return TRUE; /* We don't perform many controls on this one */
|
|
|
|
case X_PolyText16:
|
|
if (length < 4) return FALSE;
|
|
return TRUE; /* We don't perform many controls on this one */
|
|
|
|
case X_ImageText16:
|
|
return length >= 4;
|
|
|
|
case X_StoreColors:
|
|
return length > 2 && (length - 2) % 3 == 0;
|
|
|
|
case X_StoreNamedColor:
|
|
return !tvb_bytes_exist(tvb, offset, 14) || length == 4 + rounded4(v16(tvb, offset + 12));
|
|
|
|
case X_QueryColors:
|
|
return length >= 2;
|
|
|
|
case X_ChangeKeyboardMapping:
|
|
return !tvb_bytes_exist(tvb, offset, 6) || length == 2 + tvb_get_guint8(tvb, 1) * tvb_get_guint8(tvb, 5);
|
|
|
|
case X_ChangeKeyboardControl:
|
|
return !tvb_bytes_exist(tvb, offset, 6) || length == 2 + numberOfBitSet(tvb, offset + 4, 2);
|
|
|
|
case X_RotateProperties:
|
|
return !tvb_bytes_exist(tvb, offset, 10) || length == 3 + v16(tvb, offset + 8);
|
|
|
|
case X_SetPointerMapping:
|
|
return length == 1 + rounded4(tvb_get_guint8(tvb, 1));
|
|
|
|
case X_SetModifierMapping:
|
|
return length == 1 + tvb_get_guint8(tvb, 1) * 2;
|
|
|
|
case X_NoOperation:
|
|
return length >= 1;
|
|
|
|
default:
|
|
return TRUE;
|
|
}
|
|
}
|
|
|
|
/* -1 means doesn't match, +1 means match, 0 means don't know */
|
|
|
|
static int x_endian_match(tvbuff_t *tvb, guint16 (*v16)(tvbuff_t *, gint))
|
|
{
|
|
int offset, nextoffset;
|
|
int atLeastOne = 0;
|
|
|
|
for(offset = 0; tvb_bytes_exist(tvb, offset, 4); offset = nextoffset) {
|
|
int length;
|
|
length = v16(tvb, offset + 2);
|
|
if (!length) return -1;
|
|
nextoffset = offset + length * 4;
|
|
if (!consistentWithOrder(length, tvb, offset, v16)) return -1;
|
|
atLeastOne = 1;
|
|
}
|
|
return atLeastOne;
|
|
}
|
|
|
|
static gboolean
|
|
guess_byte_ordering(tvbuff_t *tvb, packet_info *pinfo,
|
|
x11_conv_data_t *state)
|
|
{
|
|
/* With X the client gives the byte ordering for the protocol,
|
|
and the port on the server tells us we're speaking X. */
|
|
|
|
int le, be, decision, decisionToCache;
|
|
|
|
if (state->byte_order == BYTE_ORDER_BE)
|
|
return FALSE; /* known to be big-endian */
|
|
else if (state->byte_order == BYTE_ORDER_LE)
|
|
return TRUE; /* known to be little-endian */
|
|
|
|
if (pinfo->srcport == pinfo->match_port) {
|
|
/*
|
|
* This is a reply or event; we don't try to guess the
|
|
* byte order on it for now.
|
|
*/
|
|
return TRUE;
|
|
}
|
|
|
|
le = x_endian_match(tvb, tvb_get_letohs);
|
|
be = x_endian_match(tvb, tvb_get_ntohs);
|
|
|
|
/* remember that "decision" really means "little_endian". */
|
|
if (le == be) {
|
|
/* We have no reason to believe it's little- rather than
|
|
big-endian, so we guess the shortest length is the
|
|
right one.
|
|
*/
|
|
if (!tvb_bytes_exist(tvb, 0, 4))
|
|
/* Not even a way to get the length. We're biased
|
|
toward little endianness here (essentially the
|
|
x86 world right now). Decoding won't go very far
|
|
anyway.
|
|
*/
|
|
decision = TRUE;
|
|
else
|
|
decision = tvb_get_letohs(tvb, 2) <= tvb_get_ntohs(tvb, 2);
|
|
} else
|
|
decision = le >= be;
|
|
|
|
decisionToCache = (le < 0 && be > 0) || (le > 0 && be < 0);
|
|
if (decisionToCache) {
|
|
/*
|
|
* Remember the decision.
|
|
*/
|
|
state->byte_order = decision ? BYTE_ORDER_LE : BYTE_ORDER_BE;
|
|
}
|
|
|
|
/*
|
|
fprintf(stderr, "packet %d\tle %d\tbe %d\tlittle_endian %d\tcache %d\n",
|
|
pinfo->fd -> num, le, be, decision, decisionToCache);
|
|
*/
|
|
return decision;
|
|
}
|
|
|
|
/************************************************************************
|
|
*** ***
|
|
*** D E C O D I N G O N E P A C K E T ***
|
|
*** ***
|
|
************************************************************************/
|
|
|
|
/*
|
|
* Decode an initial connection request.
|
|
*/
|
|
static void dissect_x11_initial_conn(tvbuff_t *tvb, packet_info *pinfo,
|
|
proto_tree *tree, x11_conv_data_t *state, gboolean little_endian)
|
|
{
|
|
int offset = 0;
|
|
int *offsetp = &offset;
|
|
proto_item *ti;
|
|
proto_tree *t;
|
|
guint16 auth_proto_name_length, auth_proto_data_length;
|
|
gint left;
|
|
|
|
ti = proto_tree_add_item(tree, proto_x11, tvb, 0, -1, FALSE);
|
|
proto_item_append_text(ti, ", Request, Initial connection request");
|
|
t = proto_item_add_subtree(ti, ett_x11);
|
|
|
|
CARD8(byte_order);
|
|
UNUSED(1);
|
|
CARD16(protocol_major_version);
|
|
CARD16(protocol_minor_version);
|
|
auth_proto_name_length = CARD16(authorization_protocol_name_length);
|
|
auth_proto_data_length = CARD16(authorization_protocol_data_length);
|
|
UNUSED(2);
|
|
|
|
if (auth_proto_name_length != 0) {
|
|
STRING8(authorization_protocol_name, auth_proto_name_length);
|
|
offset = ROUND_LENGTH(offset);
|
|
}
|
|
|
|
if (auth_proto_data_length != 0) {
|
|
STRING8(authorization_protocol_data, auth_proto_data_length);
|
|
offset = ROUND_LENGTH(offset);
|
|
}
|
|
|
|
if ((left = tvb_reported_length_remaining(tvb, offset)) > 0)
|
|
proto_tree_add_item(t, hf_x11_undecoded, tvb, offset, left,
|
|
little_endian);
|
|
|
|
/*
|
|
* This is the initial connection request...
|
|
*/
|
|
state->iconn_frame = pinfo->fd->num;
|
|
|
|
/*
|
|
* ...and we're expecting a reply to it.
|
|
*/
|
|
state->sequencenumber = 0;
|
|
g_hash_table_insert(state->seqtable, GINT_TO_POINTER(state->sequencenumber),
|
|
(int *)INITIAL_CONN);
|
|
}
|
|
|
|
static void dissect_x11_initial_reply(tvbuff_t *tvb, packet_info *pinfo,
|
|
proto_tree *tree, const char _U_ *sep, x11_conv_data_t *volatile state,
|
|
gboolean little_endian)
|
|
{
|
|
int offset = 0, *offsetp = &offset, left;
|
|
unsigned char success;
|
|
int length_of_vendor;
|
|
int length_of_reason;
|
|
proto_item *ti;
|
|
proto_tree *t;
|
|
|
|
ti = proto_tree_add_item(tree, proto_x11, tvb, 0, -1, FALSE);
|
|
proto_item_append_text(ti, ", Reply, Initial connection reply");
|
|
t = proto_item_add_subtree(ti, ett_x11);
|
|
|
|
state->iconn_reply = pinfo->fd->num;
|
|
success = INT8(success);
|
|
if (success) {
|
|
UNUSED(1);
|
|
length_of_reason = 0;
|
|
}
|
|
else {
|
|
length_of_reason = INT8(length_of_reason);
|
|
}
|
|
|
|
INT16(protocol_major_version);
|
|
INT16(protocol_minor_version);
|
|
INT16(replylength);
|
|
if (success) {
|
|
INT32(release_number);
|
|
INT32(resource_id_base);
|
|
INT32(resource_id_mask);
|
|
INT32(motion_buffer_size);
|
|
length_of_vendor = INT16(length_of_vendor);
|
|
INT16(maximum_request_length);
|
|
INT8(number_of_screens_in_roots);
|
|
INT8(number_of_formats_in_pixmap_formats);
|
|
INT8(image_byte_order);
|
|
INT8(bitmap_format_bit_order);
|
|
INT8(bitmap_format_scanline_unit);
|
|
INT8(bitmap_format_scanline_pad);
|
|
INT8(min_keycode);
|
|
INT8(max_keycode);
|
|
UNUSED(4);
|
|
STRING8(vendor, length_of_vendor);
|
|
} else {
|
|
STRING8(reason, length_of_reason);
|
|
}
|
|
|
|
if ((left = tvb_reported_length_remaining(tvb, offset)) > 0)
|
|
UNDECODED(left);
|
|
|
|
}
|
|
|
|
static void dissect_x11_request(tvbuff_t *tvb, packet_info *pinfo,
|
|
proto_tree *tree, const char *sep, x11_conv_data_t *state,
|
|
gboolean little_endian)
|
|
{
|
|
int offset = 0;
|
|
int *offsetp = &offset;
|
|
int next_offset;
|
|
proto_item *ti;
|
|
proto_tree *t;
|
|
int length, opcode, i;
|
|
guint8 v8, v8_2, v8_3;
|
|
guint16 v16;
|
|
guint32 v32;
|
|
gint left;
|
|
gchar *name;
|
|
|
|
length = VALUE16(tvb, 2) * 4;
|
|
|
|
if (length < 4) {
|
|
/* Bogus message length? */
|
|
return;
|
|
}
|
|
|
|
next_offset = offset + length;
|
|
|
|
ti = proto_tree_add_item(tree, proto_x11, tvb, 0, -1, FALSE);
|
|
t = proto_item_add_subtree(ti, ett_x11);
|
|
|
|
if (PACKET_IS_NEW(pinfo))
|
|
++state->sequencenumber;
|
|
|
|
OPCODE();
|
|
|
|
if (check_col(pinfo->cinfo, COL_INFO))
|
|
col_append_fstr(pinfo->cinfo, COL_INFO, "%s %s", sep,
|
|
val_to_str(opcode, state->opcode_vals,
|
|
"<Unknown opcode %d>"));
|
|
|
|
proto_item_append_text(ti, ", Request, opcode: %d (%s)",
|
|
opcode, val_to_str(opcode, state->opcode_vals,
|
|
"<Unknown opcode %d>"));
|
|
|
|
/*
|
|
* Does this request expect a reply?
|
|
*/
|
|
switch(opcode) {
|
|
|
|
case X_QueryExtension:
|
|
|
|
/* necessary processing even if tree == NULL */
|
|
|
|
v16 = VALUE16(tvb, 4);
|
|
name = se_alloc(v16 + 1);
|
|
stringCopy(name, tvb_get_ptr(tvb, 8, v16), v16);
|
|
|
|
/* store string of extension, opcode will be set at reply */
|
|
i = 0;
|
|
while(i < MAX_OPCODES) {
|
|
if (state->opcode_vals[i].strptr == NULL) {
|
|
state->opcode_vals[i].strptr = name;
|
|
g_hash_table_insert(state->valtable,
|
|
GINT_TO_POINTER(state->sequencenumber),
|
|
(int *)&state->opcode_vals[i]);
|
|
break;
|
|
} else if (strcmp(state->opcode_vals[i].strptr,
|
|
name) == 0) {
|
|
g_hash_table_insert(state->valtable,
|
|
GINT_TO_POINTER(state->sequencenumber),
|
|
(int *)&state->opcode_vals[i]);
|
|
break;
|
|
}
|
|
i++;
|
|
}
|
|
|
|
/* QueryExtension expects a reply, fall through */
|
|
|
|
case X_AllocColor:
|
|
case X_AllocColorCells:
|
|
case X_AllocColorPlanes:
|
|
case X_AllocNamedColor:
|
|
case X_GetAtomName:
|
|
case X_GetFontPath:
|
|
case X_GetGeometry:
|
|
case X_GetImage:
|
|
case X_GetInputFocus:
|
|
case X_GetKeyboardControl:
|
|
case X_GetKeyboardMapping:
|
|
case X_GetModifierMapping:
|
|
case X_GetMotionEvents:
|
|
case X_GetPointerControl:
|
|
case X_GetPointerMapping:
|
|
case X_GetProperty:
|
|
case X_GetScreenSaver:
|
|
case X_GetSelectionOwner:
|
|
case X_GetWindowAttributes:
|
|
case X_GrabKeyboard:
|
|
case X_GrabPointer:
|
|
case X_InternAtom:
|
|
case X_ListExtensions:
|
|
case X_ListFonts:
|
|
case X_ListFontsWithInfo:
|
|
case X_ListHosts:
|
|
case X_ListInstalledColormaps:
|
|
case X_ListProperties:
|
|
case X_LookupColor:
|
|
case X_QueryBestSize:
|
|
case X_QueryColors:
|
|
case X_QueryFont:
|
|
case X_QueryKeymap:
|
|
case X_QueryPointer:
|
|
case X_QueryTextExtents:
|
|
case X_QueryTree:
|
|
case X_SetModifierMapping:
|
|
case X_SetPointerMapping:
|
|
case X_TranslateCoords:
|
|
/*
|
|
* Those requests expect a reply.
|
|
*/
|
|
g_hash_table_insert(state->seqtable,
|
|
GINT_TO_POINTER(state->sequencenumber),
|
|
GINT_TO_POINTER(opcode));
|
|
|
|
break;
|
|
|
|
default:
|
|
/*
|
|
* With Extension, we don't know, so assume there could be one
|
|
*/
|
|
if (opcode >= X_FirstExtension && opcode <= X_LastExtension) {
|
|
g_hash_table_insert(state->seqtable,
|
|
GINT_TO_POINTER(state->sequencenumber),
|
|
GINT_TO_POINTER(opcode));
|
|
}
|
|
|
|
/*
|
|
* No reply is expected from any other request.
|
|
*/
|
|
break;
|
|
}
|
|
|
|
if (tree == NULL)
|
|
return;
|
|
|
|
switch(opcode) {
|
|
|
|
case X_CreateWindow:
|
|
CARD8(depth);
|
|
REQUEST_LENGTH();
|
|
WINDOW(wid);
|
|
WINDOW(parent);
|
|
INT16(x);
|
|
INT16(y);
|
|
CARD16(width);
|
|
CARD16(height);
|
|
CARD16(border_width);
|
|
ENUM16(window_class);
|
|
VISUALID(visual);
|
|
windowAttributes(tvb, offsetp, t, little_endian);
|
|
break;
|
|
|
|
case X_ChangeWindowAttributes:
|
|
UNUSED(1);
|
|
REQUEST_LENGTH();
|
|
WINDOW(window);
|
|
windowAttributes(tvb, offsetp, t, little_endian);
|
|
break;
|
|
|
|
case X_GetWindowAttributes:
|
|
case X_DestroyWindow:
|
|
case X_DestroySubwindows:
|
|
UNUSED(1);
|
|
REQUEST_LENGTH();
|
|
WINDOW(window);
|
|
break;
|
|
|
|
case X_ChangeSaveSet:
|
|
ENUM8(save_set_mode);
|
|
REQUEST_LENGTH();
|
|
WINDOW(window);
|
|
break;
|
|
|
|
case X_ReparentWindow:
|
|
UNUSED(1);
|
|
REQUEST_LENGTH();
|
|
WINDOW(window);
|
|
WINDOW(parent);
|
|
INT16(x);
|
|
INT16(y);
|
|
break;
|
|
|
|
case X_MapWindow:
|
|
case X_MapSubwindows:
|
|
case X_UnmapWindow:
|
|
case X_UnmapSubwindows:
|
|
UNUSED(1);
|
|
REQUEST_LENGTH();
|
|
WINDOW(window);
|
|
break;
|
|
|
|
case X_ConfigureWindow:
|
|
UNUSED(1);
|
|
REQUEST_LENGTH();
|
|
WINDOW(window);
|
|
BITMASK16(configure_window);
|
|
UNUSED(2);
|
|
BITFIELD(INT16, configure_window_mask, x);
|
|
BITFIELD(INT16, configure_window_mask, y);
|
|
BITFIELD(CARD16, configure_window_mask, width);
|
|
BITFIELD(CARD16, configure_window_mask, height);
|
|
BITFIELD(CARD16, configure_window_mask, border_width);
|
|
BITFIELD(WINDOW, configure_window_mask, sibling);
|
|
BITFIELD(ENUM8, configure_window_mask, stack_mode);
|
|
ENDBITMASK;
|
|
PAD();
|
|
break;
|
|
|
|
case X_CirculateWindow:
|
|
ENUM8(direction);
|
|
REQUEST_LENGTH();
|
|
WINDOW(window);
|
|
break;
|
|
|
|
case X_GetGeometry:
|
|
case X_QueryTree:
|
|
UNUSED(1);
|
|
REQUEST_LENGTH();
|
|
DRAWABLE(drawable);
|
|
break;
|
|
|
|
case X_InternAtom:
|
|
BOOL(only_if_exists);
|
|
REQUEST_LENGTH();
|
|
v16 = FIELD16(name_length);
|
|
UNUSED(2);
|
|
STRING8(name, v16);
|
|
PAD();
|
|
break;
|
|
|
|
case X_GetAtomName:
|
|
UNUSED(1);
|
|
REQUEST_LENGTH();
|
|
ATOM(atom);
|
|
break;
|
|
|
|
case X_ChangeProperty:
|
|
ENUM8(mode);
|
|
REQUEST_LENGTH();
|
|
WINDOW(window);
|
|
ATOM(property);
|
|
ATOM(type);
|
|
CARD8(format);
|
|
UNUSED(3);
|
|
v32 = CARD32(data_length);
|
|
LISTofBYTE(data, v32);
|
|
PAD();
|
|
break;
|
|
|
|
case X_DeleteProperty:
|
|
UNUSED(1);
|
|
REQUEST_LENGTH();
|
|
WINDOW(window);
|
|
ATOM(property);
|
|
break;
|
|
|
|
case X_GetProperty:
|
|
BOOL(delete);
|
|
REQUEST_LENGTH();
|
|
WINDOW(window);
|
|
ATOM(property);
|
|
ATOM(get_property_type);
|
|
CARD32(long_offset);
|
|
CARD32(long_length);
|
|
break;
|
|
|
|
case X_ListProperties:
|
|
UNUSED(1);
|
|
REQUEST_LENGTH();
|
|
WINDOW(window);
|
|
break;
|
|
|
|
case X_SetSelectionOwner:
|
|
UNUSED(1);
|
|
REQUEST_LENGTH();
|
|
WINDOW(owner);
|
|
ATOM(selection);
|
|
TIMESTAMP(time);
|
|
break;
|
|
|
|
case X_GetSelectionOwner:
|
|
UNUSED(1);
|
|
REQUEST_LENGTH();
|
|
ATOM(selection);
|
|
break;
|
|
|
|
case X_ConvertSelection:
|
|
UNUSED(1);
|
|
REQUEST_LENGTH();
|
|
WINDOW(requestor);
|
|
ATOM(selection);
|
|
ATOM(target);
|
|
ATOM(property);
|
|
TIMESTAMP(time);
|
|
break;
|
|
|
|
case X_SendEvent:
|
|
BOOL(propagate);
|
|
REQUEST_LENGTH();
|
|
WINDOW(destination);
|
|
SETofEVENT(event_mask);
|
|
UNDECODED(32);
|
|
break;
|
|
|
|
case X_GrabPointer:
|
|
BOOL(owner_events);
|
|
REQUEST_LENGTH();
|
|
WINDOW(grab_window);
|
|
SETofPOINTEREVENT(pointer_event_mask);
|
|
ENUM8(pointer_mode);
|
|
ENUM8(keyboard_mode);
|
|
WINDOW(confine_to);
|
|
CURSOR(cursor);
|
|
TIMESTAMP(time);
|
|
break;
|
|
|
|
case X_UngrabPointer:
|
|
UNUSED(1);
|
|
REQUEST_LENGTH();
|
|
TIMESTAMP(time);
|
|
break;
|
|
|
|
case X_GrabButton:
|
|
BOOL(owner_events);
|
|
REQUEST_LENGTH();
|
|
WINDOW(grab_window);
|
|
SETofPOINTEREVENT(event_mask);
|
|
ENUM8(pointer_mode);
|
|
ENUM8(keyboard_mode);
|
|
WINDOW(confine_to);
|
|
CURSOR(cursor);
|
|
BUTTON(button);
|
|
UNUSED(1);
|
|
SETofKEYMASK(modifiers);
|
|
break;
|
|
|
|
case X_UngrabButton:
|
|
BUTTON(button);
|
|
REQUEST_LENGTH();
|
|
WINDOW(grab_window);
|
|
SETofKEYMASK(modifiers);
|
|
UNUSED(2);
|
|
break;
|
|
|
|
case X_ChangeActivePointerGrab:
|
|
UNUSED(1);
|
|
REQUEST_LENGTH();
|
|
CURSOR(cursor);
|
|
TIMESTAMP(time);
|
|
SETofPOINTEREVENT(event_mask);
|
|
UNUSED(2);
|
|
break;
|
|
|
|
case X_GrabKeyboard:
|
|
BOOL(owner_events);
|
|
REQUEST_LENGTH();
|
|
WINDOW(grab_window);
|
|
TIMESTAMP(time);
|
|
ENUM8(pointer_mode);
|
|
ENUM8(keyboard_mode);
|
|
UNUSED(2);
|
|
break;
|
|
|
|
case X_UngrabKeyboard:
|
|
UNUSED(1);
|
|
REQUEST_LENGTH();
|
|
TIMESTAMP(time);
|
|
break;
|
|
|
|
case X_GrabKey:
|
|
BOOL(owner_events);
|
|
REQUEST_LENGTH();
|
|
WINDOW(grab_window);
|
|
SETofKEYMASK(modifiers);
|
|
KEYCODE(key);
|
|
ENUM8(pointer_mode);
|
|
ENUM8(keyboard_mode);
|
|
UNUSED(3);
|
|
break;
|
|
|
|
case X_UngrabKey:
|
|
KEYCODE(key);
|
|
REQUEST_LENGTH();
|
|
WINDOW(grab_window);
|
|
SETofKEYMASK(modifiers);
|
|
UNUSED(2);
|
|
break;
|
|
|
|
case X_AllowEvents:
|
|
ENUM8(allow_events_mode);
|
|
REQUEST_LENGTH();
|
|
TIMESTAMP(time);
|
|
break;
|
|
|
|
case X_GrabServer:
|
|
UNUSED(1);
|
|
REQUEST_LENGTH();
|
|
break;
|
|
|
|
case X_UngrabServer:
|
|
UNUSED(1);
|
|
REQUEST_LENGTH();
|
|
break;
|
|
|
|
case X_QueryPointer:
|
|
UNUSED(1);
|
|
REQUEST_LENGTH();
|
|
WINDOW(window);
|
|
break;
|
|
|
|
case X_GetMotionEvents:
|
|
UNUSED(1);
|
|
REQUEST_LENGTH();
|
|
WINDOW(window);
|
|
TIMESTAMP(start);
|
|
TIMESTAMP(stop);
|
|
break;
|
|
|
|
case X_TranslateCoords:
|
|
UNUSED(1);
|
|
REQUEST_LENGTH();
|
|
WINDOW(src_window);
|
|
WINDOW(dst_window);
|
|
INT16(src_x);
|
|
INT16(src_y);
|
|
break;
|
|
|
|
case X_WarpPointer:
|
|
UNUSED(1);
|
|
REQUEST_LENGTH();
|
|
WINDOW(warp_pointer_src_window);
|
|
WINDOW(warp_pointer_dst_window);
|
|
INT16(src_x);
|
|
INT16(src_y);
|
|
CARD16(src_width);
|
|
CARD16(src_height);
|
|
INT16(dst_x);
|
|
INT16(dst_y);
|
|
break;
|
|
|
|
case X_SetInputFocus:
|
|
ENUM8(revert_to);
|
|
REQUEST_LENGTH();
|
|
WINDOW(focus);
|
|
TIMESTAMP(time);
|
|
break;
|
|
|
|
case X_GetInputFocus:
|
|
UNUSED(1);
|
|
REQUEST_LENGTH();
|
|
break;
|
|
|
|
case X_QueryKeymap:
|
|
UNUSED(1);
|
|
REQUEST_LENGTH();
|
|
break;
|
|
|
|
case X_OpenFont:
|
|
UNUSED(1);
|
|
REQUEST_LENGTH();
|
|
FONT(fid);
|
|
v16 = FIELD16(name_length);
|
|
UNUSED(2);
|
|
STRING8(name, v16);
|
|
PAD();
|
|
break;
|
|
|
|
case X_CloseFont:
|
|
UNUSED(1);
|
|
REQUEST_LENGTH();
|
|
FONT(font);
|
|
break;
|
|
|
|
case X_QueryFont:
|
|
UNUSED(1);
|
|
REQUEST_LENGTH();
|
|
FONTABLE(font);
|
|
break;
|
|
|
|
case X_QueryTextExtents:
|
|
v8 = BOOL(odd_length);
|
|
REQUEST_LENGTH();
|
|
FONTABLE(font);
|
|
STRING16(string16, (next_offset - offset - (v8 ? 2 : 0)) / 2);
|
|
PAD();
|
|
break;
|
|
|
|
case X_ListFonts:
|
|
UNUSED(1);
|
|
REQUEST_LENGTH();
|
|
CARD16(max_names);
|
|
v16 = FIELD16(pattern_length);
|
|
STRING8(pattern, v16);
|
|
PAD();
|
|
break;
|
|
|
|
case X_ListFontsWithInfo:
|
|
UNUSED(1);
|
|
REQUEST_LENGTH();
|
|
CARD16(max_names);
|
|
v16 = FIELD16(pattern_length);
|
|
STRING8(pattern, v16);
|
|
PAD();
|
|
break;
|
|
|
|
case X_SetFontPath:
|
|
UNUSED(1);
|
|
REQUEST_LENGTH();
|
|
v16 = CARD16(str_number_in_path);
|
|
UNUSED(2);
|
|
LISTofSTRING8(path, v16);
|
|
PAD();
|
|
break;
|
|
|
|
case X_GetFontPath:
|
|
UNUSED(1);
|
|
REQUEST_LENGTH();
|
|
break;
|
|
|
|
case X_CreatePixmap:
|
|
CARD8(depth);
|
|
REQUEST_LENGTH();
|
|
PIXMAP(pid);
|
|
DRAWABLE(drawable);
|
|
CARD16(width);
|
|
CARD16(height);
|
|
break;
|
|
|
|
case X_FreePixmap:
|
|
UNUSED(1);
|
|
REQUEST_LENGTH();
|
|
PIXMAP(pixmap);
|
|
break;
|
|
|
|
case X_CreateGC:
|
|
UNUSED(1);
|
|
REQUEST_LENGTH();
|
|
GCONTEXT(cid);
|
|
DRAWABLE(drawable);
|
|
gcAttributes(tvb, offsetp, t, little_endian);
|
|
break;
|
|
|
|
case X_ChangeGC:
|
|
UNUSED(1);
|
|
REQUEST_LENGTH();
|
|
GCONTEXT(gc);
|
|
gcAttributes(tvb, offsetp, t, little_endian);
|
|
break;
|
|
|
|
case X_CopyGC:
|
|
UNUSED(1);
|
|
REQUEST_LENGTH();
|
|
GCONTEXT(src_gc);
|
|
GCONTEXT(dst_gc);
|
|
gcMask(tvb, offsetp, t, little_endian);
|
|
break;
|
|
|
|
case X_SetDashes:
|
|
UNUSED(1);
|
|
REQUEST_LENGTH();
|
|
GCONTEXT(gc);
|
|
CARD16(dash_offset);
|
|
v16 = FIELD16(dashes_length);
|
|
LISTofCARD8(dashes, v16);
|
|
PAD();
|
|
break;
|
|
|
|
case X_SetClipRectangles:
|
|
ENUM8(ordering);
|
|
REQUEST_LENGTH();
|
|
GCONTEXT(gc);
|
|
INT16(clip_x_origin);
|
|
INT16(clip_y_origin);
|
|
LISTofRECTANGLE(rectangles);
|
|
break;
|
|
|
|
case X_FreeGC:
|
|
UNUSED(1);
|
|
REQUEST_LENGTH();
|
|
GCONTEXT(gc);
|
|
break;
|
|
|
|
case X_ClearArea:
|
|
BOOL(exposures);
|
|
REQUEST_LENGTH();
|
|
WINDOW(window);
|
|
INT16(x);
|
|
INT16(y);
|
|
CARD16(width);
|
|
CARD16(height);
|
|
break;
|
|
|
|
case X_CopyArea:
|
|
UNUSED(1);
|
|
REQUEST_LENGTH();
|
|
DRAWABLE(src_drawable);
|
|
DRAWABLE(dst_drawable);
|
|
GCONTEXT(gc);
|
|
INT16(src_x);
|
|
INT16(src_y);
|
|
INT16(dst_x);
|
|
INT16(dst_y);
|
|
CARD16(width);
|
|
CARD16(height);
|
|
break;
|
|
|
|
case X_CopyPlane:
|
|
UNUSED(1);
|
|
REQUEST_LENGTH();
|
|
DRAWABLE(src_drawable);
|
|
DRAWABLE(dst_drawable);
|
|
GCONTEXT(gc);
|
|
INT16(src_x);
|
|
INT16(src_y);
|
|
INT16(dst_x);
|
|
INT16(dst_y);
|
|
CARD16(width);
|
|
CARD16(height);
|
|
CARD32(bit_plane);
|
|
break;
|
|
|
|
case X_PolyPoint:
|
|
ENUM8(coordinate_mode);
|
|
v16 = REQUEST_LENGTH();
|
|
DRAWABLE(drawable);
|
|
GCONTEXT(gc);
|
|
LISTofPOINT(points, v16 - 12);
|
|
break;
|
|
|
|
case X_PolyLine:
|
|
ENUM8(coordinate_mode);
|
|
v16 = REQUEST_LENGTH();
|
|
DRAWABLE(drawable);
|
|
GCONTEXT(gc);
|
|
LISTofPOINT(points, v16 - 12);
|
|
break;
|
|
|
|
case X_PolySegment:
|
|
UNUSED(1);
|
|
REQUEST_LENGTH();
|
|
DRAWABLE(drawable);
|
|
GCONTEXT(gc);
|
|
LISTofSEGMENT(segments);
|
|
break;
|
|
|
|
case X_PolyRectangle:
|
|
UNUSED(1);
|
|
REQUEST_LENGTH();
|
|
DRAWABLE(drawable);
|
|
GCONTEXT(gc);
|
|
LISTofRECTANGLE(rectangles);
|
|
break;
|
|
|
|
case X_PolyArc:
|
|
UNUSED(1);
|
|
REQUEST_LENGTH();
|
|
DRAWABLE(drawable);
|
|
GCONTEXT(gc);
|
|
LISTofARC(arcs);
|
|
break;
|
|
|
|
case X_FillPoly:
|
|
UNUSED(1);
|
|
v16 = REQUEST_LENGTH();
|
|
DRAWABLE(drawable);
|
|
GCONTEXT(gc);
|
|
ENUM8(shape);
|
|
ENUM8(coordinate_mode);
|
|
UNUSED(2);
|
|
LISTofPOINT(points, v16 - 16);
|
|
break;
|
|
|
|
case X_PolyFillRectangle:
|
|
UNUSED(1);
|
|
REQUEST_LENGTH();
|
|
DRAWABLE(drawable);
|
|
GCONTEXT(gc);
|
|
LISTofRECTANGLE(rectangles);
|
|
break;
|
|
|
|
case X_PolyFillArc:
|
|
UNUSED(1);
|
|
REQUEST_LENGTH();
|
|
DRAWABLE(drawable);
|
|
GCONTEXT(gc);
|
|
LISTofARC(arcs);
|
|
break;
|
|
|
|
case X_PutImage:
|
|
ENUM8(image_format);
|
|
v16 = REQUEST_LENGTH();
|
|
DRAWABLE(drawable);
|
|
GCONTEXT(gc);
|
|
CARD16(width);
|
|
CARD16(height);
|
|
INT16(dst_x);
|
|
INT16(dst_y);
|
|
CARD8(left_pad);
|
|
CARD8(depth);
|
|
UNUSED(2);
|
|
LISTofBYTE(data, v16 - 24);
|
|
PAD();
|
|
break;
|
|
|
|
case X_GetImage:
|
|
ENUM8(image_pixmap_format);
|
|
REQUEST_LENGTH();
|
|
DRAWABLE(drawable);
|
|
INT16(x);
|
|
INT16(y);
|
|
CARD16(width);
|
|
CARD16(height);
|
|
CARD32(plane_mask);
|
|
break;
|
|
|
|
case X_PolyText8:
|
|
UNUSED(1);
|
|
v16 = REQUEST_LENGTH();
|
|
DRAWABLE(drawable);
|
|
GCONTEXT(gc);
|
|
INT16(x);
|
|
INT16(y);
|
|
LISTofTEXTITEM8(items);
|
|
PAD();
|
|
break;
|
|
|
|
case X_PolyText16:
|
|
UNUSED(1);
|
|
v16 = REQUEST_LENGTH();
|
|
DRAWABLE(drawable);
|
|
GCONTEXT(gc);
|
|
INT16(x);
|
|
INT16(y);
|
|
LISTofTEXTITEM16(items);
|
|
PAD();
|
|
break;
|
|
|
|
case X_ImageText8:
|
|
v8 = FIELD8(string_length);
|
|
REQUEST_LENGTH();
|
|
DRAWABLE(drawable);
|
|
GCONTEXT(gc);
|
|
INT16(x);
|
|
INT16(y);
|
|
STRING8(string, v8);
|
|
PAD();
|
|
break;
|
|
|
|
case X_ImageText16:
|
|
v8 = FIELD8(string_length);
|
|
REQUEST_LENGTH();
|
|
DRAWABLE(drawable);
|
|
GCONTEXT(gc);
|
|
INT16(x);
|
|
INT16(y);
|
|
STRING16(string16, v8);
|
|
PAD();
|
|
break;
|
|
|
|
case X_CreateColormap:
|
|
ENUM8(alloc);
|
|
REQUEST_LENGTH();
|
|
COLORMAP(mid);
|
|
WINDOW(window);
|
|
VISUALID(visual);
|
|
break;
|
|
|
|
case X_FreeColormap:
|
|
UNUSED(1);
|
|
REQUEST_LENGTH();
|
|
COLORMAP(cmap);
|
|
break;
|
|
|
|
case X_CopyColormapAndFree:
|
|
UNUSED(1);
|
|
REQUEST_LENGTH();
|
|
COLORMAP(mid);
|
|
COLORMAP(src_cmap);
|
|
break;
|
|
|
|
case X_InstallColormap:
|
|
UNUSED(1);
|
|
REQUEST_LENGTH();
|
|
COLORMAP(cmap);
|
|
break;
|
|
|
|
case X_UninstallColormap:
|
|
UNUSED(1);
|
|
REQUEST_LENGTH();
|
|
COLORMAP(cmap);
|
|
break;
|
|
|
|
case X_ListInstalledColormaps:
|
|
UNUSED(1);
|
|
REQUEST_LENGTH();
|
|
WINDOW(window);
|
|
break;
|
|
|
|
case X_AllocColor:
|
|
UNUSED(1);
|
|
REQUEST_LENGTH();
|
|
COLORMAP(cmap);
|
|
CARD16(red);
|
|
CARD16(green);
|
|
CARD16(blue);
|
|
UNUSED(2);
|
|
break;
|
|
|
|
case X_AllocNamedColor:
|
|
UNUSED(1);
|
|
REQUEST_LENGTH();
|
|
COLORMAP(cmap);
|
|
v16 = FIELD16(name_length);
|
|
UNUSED(2);
|
|
STRING8(name, v16);
|
|
PAD();
|
|
break;
|
|
|
|
case X_AllocColorCells:
|
|
BOOL(contiguous);
|
|
REQUEST_LENGTH();
|
|
COLORMAP(cmap);
|
|
CARD16(colors);
|
|
CARD16(planes);
|
|
break;
|
|
|
|
case X_AllocColorPlanes:
|
|
BOOL(contiguous);
|
|
REQUEST_LENGTH();
|
|
COLORMAP(cmap);
|
|
CARD16(colors);
|
|
CARD16(reds);
|
|
CARD16(greens);
|
|
CARD16(blues);
|
|
break;
|
|
|
|
case X_FreeColors:
|
|
UNUSED(1);
|
|
v16 = REQUEST_LENGTH();
|
|
COLORMAP(cmap);
|
|
CARD32(plane_mask);
|
|
LISTofCARD32(pixels, v16 - 12);
|
|
break;
|
|
|
|
case X_StoreColors:
|
|
UNUSED(1);
|
|
v16 = REQUEST_LENGTH();
|
|
COLORMAP(cmap);
|
|
LISTofCOLORITEM(color_items, v16 - 8);
|
|
break;
|
|
|
|
case X_StoreNamedColor:
|
|
COLOR_FLAGS(color);
|
|
REQUEST_LENGTH();
|
|
COLORMAP(cmap);
|
|
CARD32(pixel);
|
|
v16 = FIELD16(name_length);
|
|
UNUSED(2);
|
|
STRING8(name, v16);
|
|
PAD();
|
|
break;
|
|
|
|
case X_QueryColors:
|
|
UNUSED(1);
|
|
v16 = REQUEST_LENGTH();
|
|
COLORMAP(cmap);
|
|
LISTofCARD32(pixels, v16 - 8);
|
|
break;
|
|
|
|
case X_LookupColor:
|
|
UNUSED(1);
|
|
REQUEST_LENGTH();
|
|
COLORMAP(cmap);
|
|
v16 = FIELD16(name_length);
|
|
UNUSED(2);
|
|
STRING8(name, v16);
|
|
PAD();
|
|
break;
|
|
|
|
case X_CreateCursor:
|
|
UNUSED(1);
|
|
REQUEST_LENGTH();
|
|
CURSOR(cid);
|
|
PIXMAP(source_pixmap);
|
|
PIXMAP(mask);
|
|
CARD16(fore_red);
|
|
CARD16(fore_green);
|
|
CARD16(fore_blue);
|
|
CARD16(back_red);
|
|
CARD16(back_green);
|
|
CARD16(back_blue);
|
|
CARD16(x);
|
|
CARD16(y);
|
|
break;
|
|
|
|
case X_CreateGlyphCursor:
|
|
UNUSED(1);
|
|
REQUEST_LENGTH();
|
|
CURSOR(cid);
|
|
FONT(source_font);
|
|
FONT(mask_font);
|
|
CARD16(source_char);
|
|
CARD16(mask_char);
|
|
CARD16(fore_red);
|
|
CARD16(fore_green);
|
|
CARD16(fore_blue);
|
|
CARD16(back_red);
|
|
CARD16(back_green);
|
|
CARD16(back_blue);
|
|
break;
|
|
|
|
case X_FreeCursor:
|
|
UNUSED(1);
|
|
REQUEST_LENGTH();
|
|
CURSOR(cursor);
|
|
break;
|
|
|
|
case X_RecolorCursor:
|
|
UNUSED(1);
|
|
REQUEST_LENGTH();
|
|
CURSOR(cursor);
|
|
CARD16(fore_red);
|
|
CARD16(fore_green);
|
|
CARD16(fore_blue);
|
|
CARD16(back_red);
|
|
CARD16(back_green);
|
|
CARD16(back_blue);
|
|
break;
|
|
|
|
case X_QueryBestSize:
|
|
ENUM8(class);
|
|
REQUEST_LENGTH();
|
|
DRAWABLE(drawable);
|
|
CARD16(width);
|
|
CARD16(height);
|
|
break;
|
|
|
|
case X_QueryExtension:
|
|
UNUSED(1);
|
|
REQUEST_LENGTH();
|
|
v16 = FIELD16(name_length);
|
|
UNUSED(2);
|
|
STRING8(name, v16);
|
|
PAD();
|
|
break;
|
|
|
|
case X_ListExtensions:
|
|
UNUSED(1);
|
|
REQUEST_LENGTH();
|
|
break;
|
|
|
|
case X_ChangeKeyboardMapping:
|
|
v8 = FIELD8(keycode_count);
|
|
REQUEST_LENGTH();
|
|
v8_2 = KEYCODE(first_keycode);
|
|
v8_3 = FIELD8(keysyms_per_keycode);
|
|
UNUSED(2);
|
|
LISTofKEYSYM(keysyms, state->keycodemap, v8_2, v8, v8_3);
|
|
break;
|
|
|
|
case X_GetKeyboardMapping:
|
|
UNUSED(1);
|
|
REQUEST_LENGTH();
|
|
state->request.GetKeyboardMapping.first_keycode
|
|
= KEYCODE(first_keycode);
|
|
FIELD8(count);
|
|
UNUSED(2);
|
|
break;
|
|
|
|
case X_ChangeKeyboardControl:
|
|
UNUSED(1);
|
|
REQUEST_LENGTH();
|
|
BITMASK32(keyboard_value);
|
|
BITFIELD(INT8, keyboard_value_mask, key_click_percent);
|
|
BITFIELD(INT8, keyboard_value_mask, bell_percent);
|
|
BITFIELD(INT16, keyboard_value_mask, bell_pitch);
|
|
BITFIELD(INT16, keyboard_value_mask, bell_duration);
|
|
BITFIELD(INT16, keyboard_value_mask, led);
|
|
BITFIELD(ENUM8, keyboard_value_mask, led_mode);
|
|
BITFIELD(KEYCODE, keyboard_value_mask, keyboard_key);
|
|
BITFIELD(ENUM8, keyboard_value_mask, auto_repeat_mode);
|
|
ENDBITMASK;
|
|
break;
|
|
|
|
case X_GetKeyboardControl:
|
|
UNUSED(1);
|
|
REQUEST_LENGTH();
|
|
break;
|
|
|
|
case X_Bell:
|
|
INT8(percent);
|
|
REQUEST_LENGTH();
|
|
break;
|
|
|
|
case X_ChangePointerControl:
|
|
UNUSED(1);
|
|
REQUEST_LENGTH();
|
|
INT16(acceleration_numerator);
|
|
INT16(acceleration_denominator);
|
|
INT16(threshold);
|
|
BOOL(do_acceleration);
|
|
BOOL(do_threshold);
|
|
break;
|
|
|
|
case X_GetPointerControl:
|
|
UNUSED(1);
|
|
REQUEST_LENGTH();
|
|
break;
|
|
|
|
case X_SetScreenSaver:
|
|
UNUSED(1);
|
|
REQUEST_LENGTH();
|
|
INT16(timeout);
|
|
INT16(interval);
|
|
ENUM8(prefer_blanking);
|
|
ENUM8(allow_exposures);
|
|
UNUSED(2);
|
|
break;
|
|
|
|
case X_GetScreenSaver:
|
|
UNUSED(1);
|
|
REQUEST_LENGTH();
|
|
break;
|
|
|
|
case X_ChangeHosts:
|
|
ENUM8(change_host_mode);
|
|
REQUEST_LENGTH();
|
|
v8 = ENUM8(family);
|
|
UNUSED(1);
|
|
v16 = CARD16(address_length);
|
|
if (v8 == FAMILY_INTERNET && v16 == 4) {
|
|
/*
|
|
* IPv4 addresses.
|
|
* XXX - what about IPv6? Is that a family of
|
|
* FAMILY_INTERNET (0) with a length of 16?
|
|
*/
|
|
LISTofIPADDRESS(ip_address, v16);
|
|
} else
|
|
LISTofCARD8(address, v16);
|
|
break;
|
|
|
|
case X_ListHosts:
|
|
UNUSED(1);
|
|
REQUEST_LENGTH();
|
|
break;
|
|
|
|
case X_SetAccessControl:
|
|
ENUM8(access_mode);
|
|
REQUEST_LENGTH();
|
|
break;
|
|
|
|
case X_SetCloseDownMode:
|
|
ENUM8(close_down_mode);
|
|
REQUEST_LENGTH();
|
|
break;
|
|
|
|
case X_KillClient:
|
|
UNUSED(1);
|
|
REQUEST_LENGTH();
|
|
CARD32(resource);
|
|
break;
|
|
|
|
case X_RotateProperties:
|
|
UNUSED(1);
|
|
v16 = REQUEST_LENGTH();
|
|
WINDOW(window);
|
|
CARD16(property_number);
|
|
INT16(delta);
|
|
LISTofATOM(properties, (v16 - 12));
|
|
break;
|
|
|
|
case X_ForceScreenSaver:
|
|
ENUM8(screen_saver_mode);
|
|
REQUEST_LENGTH();
|
|
break;
|
|
|
|
case X_SetPointerMapping:
|
|
v8 = FIELD8(map_length);
|
|
REQUEST_LENGTH();
|
|
LISTofCARD8(map, v8);
|
|
PAD();
|
|
break;
|
|
|
|
case X_GetPointerMapping:
|
|
UNUSED(1);
|
|
REQUEST_LENGTH();
|
|
break;
|
|
|
|
case X_SetModifierMapping:
|
|
v8 = FIELD8(keycodes_per_modifier);
|
|
REQUEST_LENGTH();
|
|
LISTofKEYCODE(state->modifiermap, keycodes, v8);
|
|
break;
|
|
|
|
case X_GetModifierMapping:
|
|
UNUSED(1);
|
|
REQUEST_LENGTH();
|
|
break;
|
|
|
|
case X_NoOperation:
|
|
UNUSED(1);
|
|
REQUEST_LENGTH();
|
|
break;
|
|
}
|
|
|
|
if ((left = tvb_reported_length_remaining(tvb, offset)) > 0)
|
|
UNDECODED(left);
|
|
}
|
|
|
|
static void dissect_x11_requests(tvbuff_t *tvb, packet_info *pinfo,
|
|
proto_tree *tree)
|
|
{
|
|
volatile int offset = 0;
|
|
int length_remaining;
|
|
volatile gboolean little_endian;
|
|
guint8 opcode;
|
|
volatile int plen;
|
|
proto_item *ti;
|
|
proto_tree *t;
|
|
volatile gboolean is_initial_creq;
|
|
guint16 auth_proto_len, auth_data_len;
|
|
const char *volatile sep = NULL;
|
|
conversation_t *conversation;
|
|
x11_conv_data_t *volatile state;
|
|
int length;
|
|
tvbuff_t *next_tvb;
|
|
|
|
while (tvb_reported_length_remaining(tvb, offset) != 0) {
|
|
/*
|
|
* We use "tvb_ensure_length_remaining()" to make sure there
|
|
* actually *is* data remaining.
|
|
*
|
|
* This means we're guaranteed that "length_remaining" is
|
|
* positive.
|
|
*/
|
|
length_remaining = tvb_ensure_length_remaining(tvb, offset);
|
|
|
|
/*
|
|
* Can we do reassembly?
|
|
*/
|
|
if (x11_desegment && pinfo->can_desegment) {
|
|
/*
|
|
* Yes - is the X11 request header split across
|
|
* segment boundaries?
|
|
*/
|
|
if (length_remaining < 4) {
|
|
/*
|
|
* Yes. Tell the TCP dissector where the data
|
|
* for this message starts in the data it handed
|
|
* us, and how many more bytes we need, and return.
|
|
*/
|
|
pinfo->desegment_offset = offset;
|
|
pinfo->desegment_len = 4 - length_remaining;
|
|
return;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Get the state for this conversation; create the conversation
|
|
* if we don't have one, and create the state if we don't have
|
|
* any.
|
|
*/
|
|
conversation = find_conversation(pinfo->fd->num, &pinfo->src, &pinfo->dst,
|
|
pinfo->ptype, pinfo->srcport, pinfo->destport, 0);
|
|
if (conversation == NULL) {
|
|
/*
|
|
* No - create one.
|
|
*/
|
|
conversation = conversation_new(pinfo->fd->num, &pinfo->src,
|
|
&pinfo->dst, pinfo->ptype, pinfo->srcport,
|
|
pinfo->destport, 0);
|
|
}
|
|
|
|
/*
|
|
* Is there state attached to this conversation?
|
|
*/
|
|
if ((state = conversation_get_proto_data(conversation, proto_x11))
|
|
== NULL)
|
|
state = x11_stateinit(conversation);
|
|
|
|
/*
|
|
* Guess the byte order if we don't already know it.
|
|
*/
|
|
little_endian = guess_byte_ordering(tvb, pinfo, state);
|
|
|
|
/*
|
|
* Get the opcode and length of the putative X11 request.
|
|
*/
|
|
opcode = VALUE8(tvb, 0);
|
|
plen = VALUE16(tvb, offset + 2);
|
|
|
|
if (plen == 0) {
|
|
/*
|
|
* This can't be 0, as it includes the header length.
|
|
* A different choice of byte order wouldn't have
|
|
* helped.
|
|
* Give up.
|
|
*/
|
|
ti = proto_tree_add_item(tree, proto_x11, tvb, offset, -1,
|
|
FALSE);
|
|
t = proto_item_add_subtree(ti, ett_x11);
|
|
proto_tree_add_text(t, tvb, offset, -1,
|
|
"Bogus request length (0)");
|
|
return;
|
|
}
|
|
|
|
if (state->iconn_frame == pinfo->fd->num ||
|
|
(g_hash_table_lookup(state->seqtable,
|
|
GINT_TO_POINTER(state->sequencenumber)) == (int *)NOTHING_SEEN &&
|
|
(opcode == 'B' || opcode == 'l') &&
|
|
(plen == 11 || plen == 2816))) {
|
|
/*
|
|
* Either
|
|
*
|
|
* we saw this on the first pass and this is
|
|
* it again
|
|
*
|
|
* or
|
|
* we haven't already seen any requests, the first
|
|
* byte of the message is 'B' or 'l', and the 16-bit
|
|
* integer 2 bytes into the data stream is either 11
|
|
* or a byte-swapped 11.
|
|
*
|
|
* This means it's probably an initial connection
|
|
* request, not a message.
|
|
*
|
|
* 'B' is decimal 66, which is the opcode for a
|
|
* PolySegment request; unfortunately, 11 is a valid
|
|
* length for a PolySegment request request, so we
|
|
* might mis-identify that request. (Are there any
|
|
* other checks we can do?)
|
|
*
|
|
* 'l' is decimal 108, which is the opcode for a
|
|
* GetScreenSaver request; the only valid length
|
|
* for that request is 1.
|
|
*/
|
|
is_initial_creq = TRUE;
|
|
|
|
/*
|
|
* We now know the byte order. Override the guess.
|
|
*/
|
|
if (state->byte_order == BYTE_ORDER_UNKNOWN) {
|
|
if (opcode == 'B') {
|
|
/*
|
|
* Big-endian.
|
|
*/
|
|
state->byte_order = BYTE_ORDER_BE;
|
|
little_endian = FALSE;
|
|
} else {
|
|
/*
|
|
* Little-endian.
|
|
*/
|
|
state->byte_order = BYTE_ORDER_LE;
|
|
little_endian = TRUE;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Can we do reassembly?
|
|
*/
|
|
if (x11_desegment && pinfo->can_desegment) {
|
|
/*
|
|
* Yes - is the fixed-length portion of the
|
|
* initial connection header split across
|
|
* segment boundaries?
|
|
*/
|
|
if (length_remaining < 10) {
|
|
/*
|
|
* Yes. Tell the TCP dissector where the
|
|
* data for this message starts in the data
|
|
* it handed us, and how many more bytes we
|
|
* need, and return.
|
|
*/
|
|
pinfo->desegment_offset = offset;
|
|
pinfo->desegment_len = 10 - length_remaining;
|
|
return;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Get the lengths of the authorization protocol and
|
|
* the authorization data.
|
|
*/
|
|
auth_proto_len = VALUE16(tvb, offset + 6);
|
|
auth_data_len = VALUE16(tvb, offset + 8);
|
|
plen = 12 + ROUND_LENGTH(auth_proto_len) +
|
|
ROUND_LENGTH(auth_data_len);
|
|
} else {
|
|
/*
|
|
* This is probably an ordinary request.
|
|
*/
|
|
is_initial_creq = FALSE;
|
|
|
|
/*
|
|
* The length of a request is in 4-byte words.
|
|
*/
|
|
plen *= 4;
|
|
}
|
|
|
|
/*
|
|
* Can we do reassembly?
|
|
*/
|
|
if (x11_desegment && pinfo->can_desegment) {
|
|
/*
|
|
* Yes - is the X11 request split across segment
|
|
* boundaries?
|
|
*/
|
|
if (length_remaining < plen) {
|
|
/*
|
|
* Yes. Tell the TCP dissector where the data
|
|
* for this message starts in the data it handed
|
|
* us, and how many more bytes we need, and return.
|
|
*/
|
|
pinfo->desegment_offset = offset;
|
|
pinfo->desegment_len = plen - length_remaining;
|
|
return;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Construct a tvbuff containing the amount of the payload
|
|
* we have available. Make its reported length the
|
|
* amount of data in the X11 request.
|
|
*
|
|
* XXX - if reassembly isn't enabled. the subdissector
|
|
* will throw a BoundsError exception, rather than a
|
|
* ReportedBoundsError exception. We really want a tvbuff
|
|
* where the length is "length", the reported length is "plen",
|
|
* and the "if the snapshot length were infinite" length is the
|
|
* minimum of the reported length of the tvbuff handed to us
|
|
* and "plen", with a new type of exception thrown if the offset
|
|
* is within the reported length but beyond that third length,
|
|
* with that exception getting the "Unreassembled Packet" error.
|
|
*/
|
|
length = length_remaining;
|
|
if (length > plen)
|
|
length = plen;
|
|
next_tvb = tvb_new_subset(tvb, offset, length, plen);
|
|
|
|
/*
|
|
* Set the column appropriately.
|
|
*/
|
|
if (is_initial_creq) {
|
|
if (check_col(pinfo->cinfo, COL_INFO))
|
|
col_set_str(pinfo->cinfo, COL_INFO,
|
|
"Initial connection request");
|
|
} else {
|
|
if (sep == NULL) {
|
|
/*
|
|
* We haven't set the column yet; set it.
|
|
*/
|
|
if (check_col(pinfo->cinfo, COL_INFO))
|
|
col_add_str(pinfo->cinfo, COL_INFO, "Requests");
|
|
|
|
/*
|
|
* Initialize the separator.
|
|
*/
|
|
sep = ":";
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Dissect the X11 request.
|
|
*
|
|
* Catch the ReportedBoundsError exception; if this
|
|
* particular message happens to get a ReportedBoundsError
|
|
* exception, that doesn't mean that we should stop
|
|
* dissecting X11 requests within this frame or chunk of
|
|
* reassembled data.
|
|
*
|
|
* If it gets a BoundsError, we can stop, as there's nothing
|
|
* more to see, so we just re-throw it.
|
|
*/
|
|
TRY {
|
|
if (is_initial_creq) {
|
|
dissect_x11_initial_conn(next_tvb, pinfo, tree,
|
|
state, little_endian);
|
|
} else {
|
|
dissect_x11_request(next_tvb, pinfo, tree, sep,
|
|
state, little_endian);
|
|
}
|
|
}
|
|
CATCH(BoundsError) {
|
|
RETHROW;
|
|
}
|
|
CATCH(ReportedBoundsError) {
|
|
show_reported_bounds_error(tvb, pinfo, tree);
|
|
}
|
|
ENDTRY;
|
|
|
|
/*
|
|
* Skip the X11 message.
|
|
*/
|
|
offset += plen;
|
|
|
|
sep = ",";
|
|
}
|
|
}
|
|
|
|
static x11_conv_data_t *
|
|
x11_stateinit(conversation_t *conversation)
|
|
{
|
|
x11_conv_data_t *state;
|
|
static x11_conv_data_t stateinit;
|
|
int i = 0;
|
|
|
|
state = se_alloc(sizeof (x11_conv_data_t));
|
|
*state = stateinit;
|
|
state->next = x11_conv_data_list;
|
|
x11_conv_data_list = state;
|
|
|
|
/* initialise opcodes */
|
|
while (1) {
|
|
if (opcode_vals[i].strptr == NULL) break;
|
|
state->opcode_vals[i].value = opcode_vals[i].value;
|
|
state->opcode_vals[i].strptr = opcode_vals[i].strptr;
|
|
i++;
|
|
}
|
|
while (i <= MAX_OPCODES) {
|
|
state->opcode_vals[i].value = 0;
|
|
state->opcode_vals[i].strptr = NULL;
|
|
i++;
|
|
}
|
|
|
|
state->seqtable = g_hash_table_new(g_direct_hash, g_direct_equal);
|
|
state->valtable = g_hash_table_new(g_direct_hash, g_direct_equal);
|
|
g_hash_table_insert(state->seqtable, (int *)0, (int *)NOTHING_SEEN);
|
|
state->byte_order = BYTE_ORDER_UNKNOWN; /* don't know yet*/
|
|
conversation_add_proto_data(conversation, proto_x11, state);
|
|
return state;
|
|
}
|
|
|
|
|
|
static void
|
|
dissect_x11_replies(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
|
{
|
|
/* Set up structures we will need to add the protocol subtree and manage it */
|
|
volatile int offset, plen;
|
|
tvbuff_t * volatile next_tvb;
|
|
conversation_t *conversation;
|
|
x11_conv_data_t *volatile state;
|
|
gboolean little_endian;
|
|
int length_remaining;
|
|
const char *volatile sep = NULL;
|
|
|
|
|
|
/*
|
|
* Get the state for this conversation; create the conversation
|
|
* if we don't have one, and create the state if we don't have
|
|
* any.
|
|
*/
|
|
conversation = find_conversation(pinfo->fd->num, &pinfo->src, &pinfo->dst,
|
|
pinfo->ptype, pinfo->srcport, pinfo->destport, 0);
|
|
if (conversation == NULL) {
|
|
/*
|
|
* No - create one.
|
|
*/
|
|
conversation = conversation_new(pinfo->fd->num, &pinfo->src, &pinfo->dst,
|
|
pinfo->ptype, pinfo->srcport, pinfo->destport, 0);
|
|
}
|
|
|
|
/*
|
|
* Is there state attached to this conversation?
|
|
*/
|
|
if ((state = conversation_get_proto_data(conversation, proto_x11))
|
|
== NULL) {
|
|
/*
|
|
* No - create a state structure and attach it.
|
|
*/
|
|
state = x11_stateinit(conversation);
|
|
}
|
|
|
|
/*
|
|
* Guess the byte order if we don't already know it.
|
|
*/
|
|
little_endian = guess_byte_ordering(tvb, pinfo, state);
|
|
|
|
offset = 0;
|
|
while (tvb_reported_length_remaining(tvb, offset) != 0) {
|
|
/*
|
|
* We use "tvb_ensure_length_remaining()" to make sure there
|
|
* actually *is* data remaining.
|
|
*
|
|
* This means we're guaranteed that "length_remaining" is
|
|
* positive.
|
|
*/
|
|
length_remaining = tvb_ensure_length_remaining(tvb, offset);
|
|
|
|
/*
|
|
* Can we do reassembly?
|
|
*/
|
|
if (x11_desegment && pinfo->can_desegment) {
|
|
/*
|
|
* Yes - is the X11 reply header split across
|
|
* segment boundaries?
|
|
*/
|
|
if (length_remaining < 8) {
|
|
/*
|
|
* Yes. Tell the TCP dissector where the data
|
|
* for this message starts in the data it handed
|
|
* us, and how many more bytes we need, and
|
|
* return.
|
|
*/
|
|
pinfo->desegment_offset = offset;
|
|
pinfo->desegment_len = 8 - length_remaining;
|
|
return;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Find out what kind of a reply it is.
|
|
* There are four possible:
|
|
* - reply to initial connection
|
|
* - errorreply (a request generated an error)
|
|
* - requestreply (reply to a request)
|
|
* - event (some event occured)
|
|
*/
|
|
if (g_hash_table_lookup(state->seqtable,
|
|
GINT_TO_POINTER(state->sequencenumber)) == (int *)INITIAL_CONN
|
|
|| (state->iconn_reply == pinfo->fd->num)) {
|
|
/*
|
|
* Either the connection is in the "initial
|
|
* connection" state, or this frame is known
|
|
* to have the initial connection reply.
|
|
* That means this is the initial connection
|
|
* reply.
|
|
*/
|
|
plen = 8 + VALUE16(tvb, offset + 6) * 4;
|
|
|
|
HANDLE_REPLY(plen, length_remaining,
|
|
"Initial connection reply",
|
|
dissect_x11_initial_reply);
|
|
} else {
|
|
/*
|
|
* This isn't an initial connection reply
|
|
* (XXX - unless we missed the initial
|
|
* connection request). Look at the first
|
|
* byte to determine what it is; errors
|
|
* start with a byte of 0, replies start
|
|
* with a byte of 1, events start with
|
|
* a byte with of 2 or greater.
|
|
*/
|
|
switch (tvb_get_guint8(tvb, offset)) {
|
|
|
|
case 0:
|
|
plen = 32;
|
|
HANDLE_REPLY(plen, length_remaining,
|
|
"Error", dissect_x11_error);
|
|
break;
|
|
|
|
case 1:
|
|
/* replylength is in units of four. */
|
|
plen = 32 + VALUE32(tvb, offset + 4) * 4;
|
|
|
|
HANDLE_REPLY(plen, length_remaining,
|
|
"Reply", dissect_x11_reply);
|
|
break;
|
|
|
|
default:
|
|
/* Event */
|
|
plen = 32;
|
|
HANDLE_REPLY(plen, length_remaining,
|
|
"Event", dissect_x11_event);
|
|
break;
|
|
}
|
|
}
|
|
|
|
offset += plen;
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
static void
|
|
dissect_x11_reply(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree,
|
|
const char *volatile sep, x11_conv_data_t *volatile state,
|
|
gboolean little_endian)
|
|
{
|
|
int offset = 0, *offsetp = &offset, length, left, opcode;
|
|
int major_opcode, sequence_number;
|
|
value_string *vals_p;
|
|
proto_item *ti;
|
|
proto_tree *t;
|
|
|
|
ti = proto_tree_add_item(tree, proto_x11, tvb, 0,
|
|
tvb_reported_length_remaining(tvb, offset),
|
|
FALSE);
|
|
t = proto_item_add_subtree(ti, ett_x11);
|
|
|
|
|
|
/*
|
|
* XXX - this doesn't work correctly if either
|
|
*
|
|
* 1) the request sequence number wraps in the lower 16
|
|
* bits;
|
|
*
|
|
* 2) we don't see the initial connection request and the
|
|
* resynchronization of sequence number fails and thus
|
|
* don't have the right sequence numbers
|
|
*
|
|
* 3) we don't have all the packets in the capture and
|
|
* get out of sequence.
|
|
*
|
|
* We might, instead, want to assume that a reply is a reply to
|
|
* the most recent not-already-replied-to request in the same
|
|
* connection. That also might mismatch replies to requests if
|
|
* packets are lost, but there's nothing you can do to fix that.
|
|
*/
|
|
|
|
sequence_number = VALUE16(tvb, offset + 2);
|
|
opcode = GPOINTER_TO_INT(g_hash_table_lookup(state->seqtable,
|
|
GINT_TO_POINTER(sequence_number)));
|
|
|
|
if (state->iconn_frame == 0 && state->resync == FALSE) {
|
|
|
|
/*
|
|
* We don't see the initial connection request and no
|
|
* resynchronization has been performed yet (first reply),
|
|
* set the current sequence number to the one of the
|
|
* current reply (this is only performed once).
|
|
*/
|
|
state->sequencenumber = sequence_number;
|
|
state->resync = TRUE;
|
|
}
|
|
|
|
if (opcode == UNKNOWN_OPCODE) {
|
|
if (check_col(pinfo->cinfo, COL_INFO))
|
|
col_append_fstr(pinfo->cinfo, COL_INFO,
|
|
"%s to unknown request", sep);
|
|
proto_item_append_text(ti, ", Reply to unknown request");
|
|
} else {
|
|
if (check_col(pinfo->cinfo, COL_INFO))
|
|
col_append_fstr(pinfo->cinfo, COL_INFO, "%s %s",
|
|
sep,
|
|
val_to_str(opcode, state->opcode_vals,
|
|
"<Unknown opcode %d>"));
|
|
|
|
proto_item_append_text(ti, ", Reply, opcode: %d (%s)",
|
|
opcode, val_to_str(opcode,
|
|
state->opcode_vals,
|
|
"<Unknown opcode %d>"));
|
|
}
|
|
|
|
switch (opcode) {
|
|
|
|
/*
|
|
* Replies that need special processing outside tree
|
|
*/
|
|
|
|
case X_QueryExtension:
|
|
|
|
/*
|
|
* if extension is present and request is known:
|
|
* store opcode of extension in value_string of
|
|
* opcodes
|
|
*/
|
|
if (!VALUE8(tvb, offset + 8)) {
|
|
/* not present */
|
|
break;
|
|
}
|
|
|
|
vals_p = g_hash_table_lookup(state->valtable,
|
|
GINT_TO_POINTER(sequence_number));
|
|
if (vals_p != NULL) {
|
|
major_opcode = VALUE8(tvb, offset + 9);
|
|
vals_p->value = major_opcode;
|
|
g_hash_table_remove(state->valtable,
|
|
GINT_TO_POINTER(sequence_number));
|
|
}
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (tree == NULL)
|
|
return;
|
|
|
|
switch (opcode) {
|
|
/*
|
|
* Requests that expect a reply.
|
|
*/
|
|
|
|
case X_GetWindowAttributes:
|
|
REPLYCONTENTS_COMMON();
|
|
break;
|
|
|
|
case X_GetGeometry:
|
|
REPLY(reply);
|
|
CARD8(depth);
|
|
SEQUENCENUMBER_REPLY(sequencenumber);
|
|
REPLYLENGTH(replylength);
|
|
WINDOW(rootwindow);
|
|
INT16(x);
|
|
INT16(y);
|
|
CARD16(width);
|
|
CARD16(height);
|
|
CARD16(border_width);
|
|
UNUSED(10);
|
|
break;
|
|
|
|
case X_QueryTree:
|
|
REPLYCONTENTS_COMMON();
|
|
break;
|
|
|
|
case X_InternAtom:
|
|
REPLY(reply);
|
|
UNUSED(1);
|
|
SEQUENCENUMBER_REPLY(sequencenumber);
|
|
REPLYLENGTH(replylength);
|
|
ATOM(atom);
|
|
UNUSED(20);
|
|
break;
|
|
|
|
case X_GetAtomName:
|
|
REPLYCONTENTS_COMMON();
|
|
break;
|
|
|
|
case X_GetProperty:
|
|
REPLY(reply);
|
|
CARD8(format);
|
|
SEQUENCENUMBER_REPLY(sequencenumber);
|
|
length = REPLYLENGTH(replylength);
|
|
ATOM(get_property_type);
|
|
CARD32(bytes_after);
|
|
CARD32(valuelength);
|
|
UNUSED(12);
|
|
break;
|
|
|
|
case X_ListProperties:
|
|
REPLY(reply);
|
|
UNUSED(1);
|
|
SEQUENCENUMBER_REPLY(sequencenumber);
|
|
REPLYLENGTH(replylength);
|
|
length = CARD16(property_number);
|
|
UNUSED(22);
|
|
LISTofATOM(properties, length*4);
|
|
break;
|
|
|
|
case X_GetSelectionOwner:
|
|
REPLY(reply);
|
|
UNUSED(1);
|
|
SEQUENCENUMBER_REPLY(sequencenumber);
|
|
REPLYLENGTH(replylength);
|
|
WINDOW(owner);
|
|
UNUSED(20);
|
|
break;
|
|
|
|
case X_GrabPointer:
|
|
case X_GrabKeyboard:
|
|
REPLY(reply);
|
|
ENUM8(grab_status);
|
|
SEQUENCENUMBER_REPLY(sequencenumber);
|
|
REPLYLENGTH(replylength);
|
|
UNUSED(24);
|
|
break;
|
|
|
|
case X_QueryPointer:
|
|
REPLY(reply);
|
|
BOOL(same_screen);
|
|
SEQUENCENUMBER_REPLY(sequencenumber);
|
|
REPLYLENGTH(replylength);
|
|
WINDOW(rootwindow);
|
|
WINDOW(childwindow);
|
|
INT16(root_x);
|
|
INT16(root_y);
|
|
INT16(win_x);
|
|
INT16(win_y);
|
|
SETofKEYBUTMASK(mask);
|
|
UNUSED(6);
|
|
break;
|
|
|
|
case X_GetMotionEvents:
|
|
REPLYCONTENTS_COMMON();
|
|
break;
|
|
|
|
case X_TranslateCoords:
|
|
REPLY(reply);
|
|
BOOL(same_screen);
|
|
SEQUENCENUMBER_REPLY(sequencenumber);
|
|
REPLYLENGTH(replylength);
|
|
WINDOW(childwindow);
|
|
INT16(dst_x);
|
|
INT16(dst_y);
|
|
UNUSED(16);
|
|
break;
|
|
|
|
case X_GetInputFocus:
|
|
REPLY(reply);
|
|
ENUM8(revert_to);
|
|
SEQUENCENUMBER_REPLY(sequencenumber);
|
|
REPLYLENGTH(replylength);
|
|
WINDOW(focus);
|
|
UNUSED(20);
|
|
break;
|
|
|
|
case X_QueryKeymap:
|
|
REPLY(reply);
|
|
UNUSED(1);
|
|
SEQUENCENUMBER_REPLY(sequencenumber);
|
|
REPLYLENGTH(replylength);
|
|
LISTofCARD8(keys, 32);
|
|
break;
|
|
|
|
case X_QueryFont:
|
|
case X_QueryTextExtents:
|
|
case X_ListFonts:
|
|
case X_GetImage:
|
|
case X_ListInstalledColormaps:
|
|
REPLYCONTENTS_COMMON();
|
|
break;
|
|
|
|
case X_AllocColor:
|
|
REPLY(reply);
|
|
UNUSED(1);
|
|
SEQUENCENUMBER_REPLY(sequencenumber);
|
|
REPLYLENGTH(replylength);
|
|
CARD16(red);
|
|
CARD16(green);
|
|
CARD16(blue);
|
|
UNUSED(2);
|
|
CARD32(pixel);
|
|
UNUSED(12);
|
|
break;
|
|
|
|
case X_QueryColors:
|
|
REPLYCONTENTS_COMMON();
|
|
break;
|
|
|
|
case X_LookupColor:
|
|
REPLY(reply);
|
|
UNUSED(1);
|
|
SEQUENCENUMBER_REPLY(sequencenumber);
|
|
REPLYLENGTH(replylength);
|
|
CARD16(exact_red);
|
|
CARD16(exact_green);
|
|
CARD16(exact_blue);
|
|
CARD16(visual_red);
|
|
CARD16(visual_green);
|
|
CARD16(visual_blue);
|
|
UNUSED(12);
|
|
break;
|
|
|
|
case X_QueryBestSize:
|
|
REPLY(reply);
|
|
UNUSED(1);
|
|
SEQUENCENUMBER_REPLY(sequencenumber);
|
|
REPLYLENGTH(replylength);
|
|
CARD16(width);
|
|
CARD16(height);
|
|
UNUSED(20);
|
|
break;
|
|
|
|
case X_QueryExtension:
|
|
REPLY(reply);
|
|
UNUSED(1);
|
|
SEQUENCENUMBER_REPLY(sequencenumber);
|
|
REPLYLENGTH(replylength);
|
|
BOOL(present);
|
|
CARD8(major_opcode);
|
|
CARD8(first_event);
|
|
CARD8(first_error);
|
|
UNUSED(20);
|
|
break;
|
|
|
|
case X_ListExtensions:
|
|
REPLYCONTENTS_COMMON();
|
|
break;
|
|
|
|
case X_GetKeyboardMapping:
|
|
state->first_keycode =
|
|
state->request.GetKeyboardMapping.first_keycode;
|
|
REPLY(reply);
|
|
state->keysyms_per_keycode =
|
|
FIELD8(keysyms_per_keycode);
|
|
SEQUENCENUMBER_REPLY(sequencenumber);
|
|
length = REPLYLENGTH(replylength);
|
|
UNUSED(24);
|
|
LISTofKEYSYM(keysyms, state->keycodemap,
|
|
state->request.GetKeyboardMapping.first_keycode,
|
|
/* XXX - length / state->keysyms_per_keycode can raise a division by zero,
|
|
* don't know if this is the *right* way to fix it ... */
|
|
state->keysyms_per_keycode ? length / state->keysyms_per_keycode : 0,
|
|
state->keysyms_per_keycode);
|
|
break;
|
|
|
|
case X_GetKeyboardControl:
|
|
REPLYCONTENTS_COMMON();
|
|
break;
|
|
|
|
case X_GetPointerControl:
|
|
REPLY(reply);
|
|
UNUSED(1);
|
|
SEQUENCENUMBER_REPLY(sequencenumber);
|
|
REPLYLENGTH(replylength);
|
|
CARD16(acceleration_numerator);
|
|
CARD16(acceleration_denominator);
|
|
CARD16(threshold);
|
|
UNUSED(18);
|
|
break;
|
|
|
|
case X_GetScreenSaver:
|
|
REPLY(reply);
|
|
UNUSED(1);
|
|
SEQUENCENUMBER_REPLY(sequencenumber);
|
|
REPLYLENGTH(replylength);
|
|
CARD16(timeout);
|
|
CARD16(interval);
|
|
ENUM8(prefer_blanking);
|
|
ENUM8(allow_exposures);
|
|
UNUSED(18);
|
|
break;
|
|
|
|
case X_ListHosts:
|
|
case X_SetPointerMapping:
|
|
case X_GetPointerMapping:
|
|
case X_SetModifierMapping:
|
|
REPLYCONTENTS_COMMON();
|
|
break;
|
|
|
|
case X_GetModifierMapping:
|
|
REPLY(reply);
|
|
state->keycodes_per_modifier =
|
|
FIELD8(keycodes_per_modifier);
|
|
SEQUENCENUMBER_REPLY(sequencenumber);
|
|
REPLYLENGTH(replylength);
|
|
UNUSED(24);
|
|
LISTofKEYCODE(state->modifiermap, keycodes,
|
|
state->keycodes_per_modifier);
|
|
break;
|
|
|
|
default:
|
|
REPLYCONTENTS_COMMON();
|
|
}
|
|
|
|
if ((left = tvb_reported_length_remaining(tvb, offset)) > 0)
|
|
UNDECODED(left);
|
|
}
|
|
|
|
static void
|
|
same_screen_focus(tvbuff_t *tvb, int *offsetp, proto_tree *t)
|
|
{
|
|
proto_item *ti;
|
|
guint32 bitmask_value;
|
|
int bitmask_offset;
|
|
int bitmask_size;
|
|
proto_tree *bitmask_tree;
|
|
|
|
bitmask_value = VALUE8(tvb, *offsetp);
|
|
bitmask_offset = *offsetp;
|
|
bitmask_size = 1;
|
|
|
|
ti = proto_tree_add_uint(t, hf_x11_same_screen_focus_mask, tvb, *offsetp, 1,
|
|
bitmask_value);
|
|
bitmask_tree = proto_item_add_subtree(ti, ett_x11_same_screen_focus);
|
|
FLAG(same_screen_focus, focus);
|
|
FLAG(same_screen_focus, same_screen);
|
|
|
|
*offsetp += 1;
|
|
}
|
|
|
|
static void
|
|
dissect_x11_event(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree,
|
|
const char *volatile sep, x11_conv_data_t *volatile state,
|
|
gboolean little_endian)
|
|
{
|
|
int offset = 0, *offsetp = &offset, left;
|
|
unsigned char eventcode;
|
|
proto_item *ti;
|
|
proto_tree *t;
|
|
|
|
ti = proto_tree_add_item(tree, proto_x11, tvb, 0, -1, FALSE);
|
|
t = proto_item_add_subtree(ti, ett_x11);
|
|
|
|
eventcode = tvb_get_guint8(tvb, offset);
|
|
|
|
if (check_col(pinfo->cinfo, COL_INFO))
|
|
col_append_fstr(pinfo->cinfo, COL_INFO, "%s %s",
|
|
sep, val_to_str(eventcode, eventcode_vals,
|
|
"<Unknown eventcode %u>"));
|
|
|
|
proto_tree_add_uint_format(t, hf_x11_eventcode, tvb, offset, 1,
|
|
eventcode,
|
|
"eventcode: %d (%s)",
|
|
eventcode,
|
|
val_to_str(eventcode, eventcode_vals,
|
|
"<Unknown eventcode %u>"));
|
|
++offset;
|
|
|
|
proto_item_append_text(ti, ", Event, eventcode: %d (%s)",
|
|
eventcode, val_to_str(eventcode, eventcode_vals,
|
|
"<Unknown eventcode %u>"));
|
|
|
|
if (tree == NULL)
|
|
return;
|
|
|
|
switch (eventcode) {
|
|
case KeyPress:
|
|
case KeyRelease: {
|
|
int code, mask;
|
|
|
|
/* need to do some prefetching here ... */
|
|
code = VALUE8(tvb, offset);
|
|
mask = VALUE16(tvb, 28);
|
|
|
|
KEYCODE_DECODED(keycode, code, mask);
|
|
CARD16(event_sequencenumber);
|
|
EVENTCONTENTS_COMMON();
|
|
BOOL(same_screen);
|
|
UNUSED(1);
|
|
break;
|
|
}
|
|
|
|
case ButtonPress:
|
|
case ButtonRelease:
|
|
BUTTON(eventbutton);
|
|
CARD16(event_sequencenumber);
|
|
EVENTCONTENTS_COMMON();
|
|
BOOL(same_screen);
|
|
UNUSED(1);
|
|
break;
|
|
|
|
case MotionNotify:
|
|
CARD8(detail);
|
|
CARD16(event_sequencenumber);
|
|
EVENTCONTENTS_COMMON();
|
|
BOOL(same_screen);
|
|
UNUSED(1);
|
|
break;
|
|
|
|
case EnterNotify:
|
|
case LeaveNotify:
|
|
ENUM8(event_detail);
|
|
CARD16(event_sequencenumber);
|
|
EVENTCONTENTS_COMMON();
|
|
ENUM8(grab_mode);
|
|
same_screen_focus(tvb, offsetp, t);
|
|
break;
|
|
|
|
case FocusIn:
|
|
case FocusOut:
|
|
ENUM8(focus_detail);
|
|
CARD16(event_sequencenumber);
|
|
WINDOW(eventwindow);
|
|
ENUM8(focus_mode);
|
|
UNUSED(23);
|
|
break;
|
|
|
|
case KeymapNotify:
|
|
break;
|
|
|
|
case Expose:
|
|
UNUSED(1);
|
|
CARD16(event_sequencenumber);
|
|
WINDOW(eventwindow);
|
|
INT16(x);
|
|
INT16(y);
|
|
CARD16(width);
|
|
CARD16(height);
|
|
CARD16(count);
|
|
UNUSED(14);
|
|
break;
|
|
|
|
case GraphicsExpose:
|
|
UNUSED(1);
|
|
CARD16(event_sequencenumber);
|
|
DRAWABLE(drawable);
|
|
CARD16(x);
|
|
CARD16(y);
|
|
CARD16(width);
|
|
CARD16(height);
|
|
CARD16(minor_opcode);
|
|
CARD16(count);
|
|
CARD8(major_opcode);
|
|
UNUSED(11);
|
|
break;
|
|
|
|
case NoExpose:
|
|
UNUSED(1);
|
|
CARD16(event_sequencenumber);
|
|
DRAWABLE(drawable);
|
|
CARD16(minor_opcode);
|
|
CARD8(major_opcode);
|
|
UNUSED(21);
|
|
break;
|
|
|
|
case VisibilityNotify:
|
|
UNUSED(1);
|
|
CARD16(event_sequencenumber);
|
|
WINDOW(eventwindow);
|
|
ENUM8(visibility_state);
|
|
UNUSED(23);
|
|
break;
|
|
|
|
case CreateNotify:
|
|
UNUSED(1);
|
|
CARD16(event_sequencenumber);
|
|
WINDOW(parent);
|
|
WINDOW(eventwindow);
|
|
INT16(x);
|
|
INT16(y);
|
|
CARD16(width);
|
|
CARD16(height);
|
|
CARD16(border_width);
|
|
BOOL(override_redirect);
|
|
UNUSED(9);
|
|
break;
|
|
|
|
case DestroyNotify:
|
|
UNUSED(1);
|
|
CARD16(event_sequencenumber);
|
|
WINDOW(eventwindow);
|
|
WINDOW(window);
|
|
UNUSED(20);
|
|
break;
|
|
|
|
case UnmapNotify:
|
|
UNUSED(1);
|
|
CARD16(event_sequencenumber);
|
|
WINDOW(eventwindow);
|
|
WINDOW(window);
|
|
BOOL(from_configure);
|
|
UNUSED(19);
|
|
break;
|
|
|
|
case MapNotify:
|
|
UNUSED(1);
|
|
CARD16(event_sequencenumber);
|
|
WINDOW(eventwindow);
|
|
WINDOW(window);
|
|
BOOL(override_redirect);
|
|
UNUSED(19);
|
|
break;
|
|
|
|
case MapRequest:
|
|
UNUSED(1);
|
|
CARD16(event_sequencenumber);
|
|
WINDOW(parent);
|
|
WINDOW(eventwindow);
|
|
UNUSED(20);
|
|
break;
|
|
|
|
case ReparentNotify:
|
|
UNUSED(1);
|
|
CARD16(event_sequencenumber);
|
|
WINDOW(eventwindow);
|
|
WINDOW(window);
|
|
WINDOW(parent);
|
|
INT16(x);
|
|
INT16(y);
|
|
BOOL(override_redirect);
|
|
UNUSED(11);
|
|
break;
|
|
|
|
case ConfigureNotify:
|
|
UNUSED(1);
|
|
CARD16(event_sequencenumber);
|
|
WINDOW(eventwindow);
|
|
WINDOW(window);
|
|
WINDOW(above_sibling);
|
|
INT16(x);
|
|
INT16(y);
|
|
CARD16(width);
|
|
CARD16(height);
|
|
CARD16(border_width);
|
|
BOOL(override_redirect);
|
|
UNUSED(5);
|
|
break;
|
|
|
|
case ConfigureRequest:
|
|
break;
|
|
|
|
case GravityNotify:
|
|
UNUSED(1);
|
|
CARD16(event_sequencenumber);
|
|
WINDOW(eventwindow);
|
|
WINDOW(window);
|
|
INT16(x);
|
|
INT16(y);
|
|
UNUSED(16);
|
|
break;
|
|
|
|
case ResizeRequest:
|
|
UNUSED(1);
|
|
CARD16(event_sequencenumber);
|
|
WINDOW(eventwindow);
|
|
CARD16(width);
|
|
CARD16(height);
|
|
UNUSED(20);
|
|
break;
|
|
|
|
case CirculateNotify:
|
|
UNUSED(1);
|
|
CARD16(event_sequencenumber);
|
|
WINDOW(eventwindow);
|
|
WINDOW(window);
|
|
UNUSED(4);
|
|
ENUM8(place);
|
|
UNUSED(15);
|
|
break;
|
|
|
|
case CirculateRequest:
|
|
UNUSED(1);
|
|
CARD16(event_sequencenumber);
|
|
WINDOW(parent);
|
|
WINDOW(eventwindow);
|
|
UNUSED(4);
|
|
ENUM8(place);
|
|
UNUSED(15);
|
|
break;
|
|
|
|
case PropertyNotify:
|
|
UNUSED(1);
|
|
CARD16(event_sequencenumber);
|
|
WINDOW(eventwindow);
|
|
ATOM(atom);
|
|
TIMESTAMP(time);
|
|
ENUM8(property_state);
|
|
UNUSED(15);
|
|
break;
|
|
|
|
case SelectionClear:
|
|
UNUSED(1);
|
|
CARD16(event_sequencenumber);
|
|
TIMESTAMP(time);
|
|
WINDOW(owner);
|
|
ATOM(selection);
|
|
UNUSED(16);
|
|
break;
|
|
|
|
case SelectionRequest:
|
|
UNUSED(1);
|
|
CARD16(event_sequencenumber);
|
|
TIMESTAMP(time);
|
|
WINDOW(owner);
|
|
WINDOW(requestor);
|
|
ATOM(selection);
|
|
ATOM(target);
|
|
ATOM(property);
|
|
UNUSED(4);
|
|
break;
|
|
|
|
case SelectionNotify:
|
|
UNUSED(1);
|
|
CARD16(event_sequencenumber);
|
|
TIMESTAMP(time);
|
|
WINDOW(requestor);
|
|
ATOM(selection);
|
|
ATOM(target);
|
|
ATOM(property);
|
|
UNUSED(8);
|
|
break;
|
|
|
|
case ColormapNotify:
|
|
UNUSED(1);
|
|
CARD16(event_sequencenumber);
|
|
WINDOW(eventwindow);
|
|
COLORMAP(cmap);
|
|
BOOL(new);
|
|
ENUM8(colormap_state);
|
|
UNUSED(18);
|
|
break;
|
|
|
|
case ClientMessage:
|
|
CARD8(format);
|
|
CARD16(event_sequencenumber);
|
|
WINDOW(eventwindow);
|
|
ATOM(type);
|
|
LISTofBYTE(data, 20);
|
|
break;
|
|
|
|
case MappingNotify:
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if ((left = tvb_reported_length_remaining(tvb, offset)) > 0)
|
|
UNDECODED(left);
|
|
|
|
return;
|
|
}
|
|
|
|
static void
|
|
dissect_x11_error(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree,
|
|
const char *volatile sep, x11_conv_data_t *volatile state _U_,
|
|
gboolean little_endian)
|
|
{
|
|
int offset = 0, *offsetp = &offset, left;
|
|
unsigned char errorcode, error;
|
|
proto_item *ti;
|
|
proto_tree *t;
|
|
|
|
ti = proto_tree_add_item(tree, proto_x11, tvb, 0, -1, FALSE);
|
|
t = proto_item_add_subtree(ti, ett_x11);
|
|
|
|
error = tvb_get_guint8(tvb, offset);
|
|
CARD8(error);
|
|
|
|
errorcode = tvb_get_guint8(tvb, offset);
|
|
if (check_col(pinfo->cinfo, COL_INFO))
|
|
col_append_fstr(pinfo->cinfo, COL_INFO, "%s %s",
|
|
sep, val_to_str(errorcode, errorcode_vals, "<Unknown errorcode %u>"));
|
|
|
|
proto_tree_add_uint_format(t, hf_x11_errorcode, tvb, offset, 1,
|
|
errorcode,
|
|
"errorcode: %d (%s)",
|
|
errorcode,
|
|
val_to_str(errorcode, errorcode_vals,
|
|
"<Unknown errocode %u>"));
|
|
++offset;
|
|
|
|
proto_item_append_text(ti, ", Error, errorcode: %d (%s)",
|
|
errorcode, val_to_str(errorcode, errorcode_vals,
|
|
"<Unknown errorcode %u>"));
|
|
|
|
if (tree == NULL)
|
|
return;
|
|
|
|
CARD16(error_sequencenumber);
|
|
|
|
switch (errorcode) {
|
|
case BadValue:
|
|
CARD32(error_badvalue);
|
|
break;
|
|
|
|
default:
|
|
UNDECODED(4);
|
|
}
|
|
|
|
CARD16(minor_opcode);
|
|
CARD8(major_opcode);
|
|
|
|
if ((left = tvb_reported_length_remaining(tvb, offset)) > 0)
|
|
UNDECODED(left);
|
|
}
|
|
|
|
|
|
|
|
/************************************************************************
|
|
*** ***
|
|
*** I N I T I A L I Z A T I O N A N D M A I N ***
|
|
*** ***
|
|
************************************************************************/
|
|
|
|
static void
|
|
dissect_x11(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
|
{
|
|
if (check_col(pinfo->cinfo, COL_PROTOCOL))
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "X11");
|
|
|
|
if (pinfo->match_port == pinfo->srcport)
|
|
dissect_x11_replies(tvb, pinfo, tree);
|
|
else
|
|
dissect_x11_requests(tvb, pinfo, tree);
|
|
}
|
|
|
|
/* Register the protocol with Ethereal */
|
|
void proto_register_x11(void)
|
|
{
|
|
|
|
/* Setup list of header fields */
|
|
static hf_register_info hf[] = {
|
|
#include "x11-register-info.h"
|
|
};
|
|
|
|
/* Setup protocol subtree array */
|
|
static gint *ett[] = {
|
|
&ett_x11,
|
|
&ett_x11_color_flags,
|
|
&ett_x11_list_of_arc,
|
|
&ett_x11_arc,
|
|
&ett_x11_list_of_atom,
|
|
&ett_x11_list_of_card32,
|
|
&ett_x11_list_of_color_item,
|
|
&ett_x11_color_item,
|
|
&ett_x11_list_of_keycode,
|
|
&ett_x11_list_of_keysyms,
|
|
&ett_x11_keysym,
|
|
&ett_x11_list_of_point,
|
|
&ett_x11_point,
|
|
&ett_x11_list_of_rectangle,
|
|
&ett_x11_rectangle,
|
|
&ett_x11_list_of_segment,
|
|
&ett_x11_segment,
|
|
&ett_x11_list_of_string8,
|
|
&ett_x11_list_of_text_item,
|
|
&ett_x11_text_item,
|
|
&ett_x11_gc_value_mask,
|
|
&ett_x11_event_mask,
|
|
&ett_x11_do_not_propagate_mask,
|
|
&ett_x11_set_of_key_mask,
|
|
&ett_x11_pointer_event_mask,
|
|
&ett_x11_window_value_mask,
|
|
&ett_x11_configure_window_mask,
|
|
&ett_x11_keyboard_value_mask,
|
|
&ett_x11_same_screen_focus,
|
|
};
|
|
module_t *x11_module;
|
|
|
|
/* Register the protocol name and description */
|
|
proto_x11 = proto_register_protocol("X11", "X11", "x11");
|
|
|
|
/* Required function calls to register the header fields and subtrees used */
|
|
proto_register_field_array(proto_x11, hf, array_length(hf));
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
|
|
register_init_routine(x11_init_protocol);
|
|
|
|
x11_module = prefs_register_protocol(proto_x11, NULL);
|
|
prefs_register_bool_preference(x11_module, "desegment",
|
|
"Reassemble X11 messages spanning multiple TCP segments",
|
|
"Whether the X11 dissector should reassemble messages spanning multiple TCP segments. "
|
|
"To use this option, you must also enable \"Allow subdissectors to reassemble TCP streams\" in the TCP protocol settings.",
|
|
&x11_desegment);
|
|
}
|
|
|
|
void
|
|
proto_reg_handoff_x11(void)
|
|
{
|
|
dissector_handle_t x11_handle;
|
|
|
|
x11_handle = create_dissector_handle(dissect_x11, proto_x11);
|
|
dissector_add("tcp.port", TCP_PORT_X11, x11_handle);
|
|
dissector_add("tcp.port", TCP_PORT_X11_2, x11_handle);
|
|
dissector_add("tcp.port", TCP_PORT_X11_3, x11_handle);
|
|
data_handle = find_dissector("data");
|
|
}
|
|
|