nexmon – Rev 1
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/* packet-vnc.c
* Routines for VNC dissection (Virtual Network Computing)
* Copyright 2005, Ulf Lamping <ulf.lamping@web.de>
* Copyright 2006-2007, Stephen Fisher (see AUTHORS file)
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
/* Dissection of the VNC (Virtual Network Computing) network traffic.
*
* All versions of RealVNC and TightVNC are supported.
* Note: The addition of TightVNC support is not yet complete.
*
* Several VNC implementations available, see:
* http://www.realvnc.com/
* http://www.tightvnc.com/
* http://ultravnc.sourceforge.net/
* [Fedora TigerVNC]
* ...
*
* The protocol itself is known as RFB - Remote Frame Buffer Protocol.
*
* This code is based on the protocol specification:
* http://www.realvnc.com/docs/rfbproto.pdf
* and the RealVNC free edition & TightVNC source code
* Note: rfbproto.rst [ https://github.com/svn2github/tigervnc/blob/master/rfbproto/rfbproto.rst ]
* seems to have additional information over rfbproto.pdf.
*/
/* XXX:
* This dissector adds items to the protocol tree before completing re-assembly
* of a VNC PDU which extends over more than one TCP segment.
* This is not correct. As noted in Bug #5366 (and elsewhere), the correct method
* is that:
* "one must walk over all the message first, to determine its exact length
* (one of the characteristics of the protocol, hard to determine prior to
* going over the message what its final size would be)".
*
* The original method of reassembly:
* When more data is needed to continue dissecting a PDU, repeatedly request
* a few additional bytes (for one or a few more fields of the PDU).
* This resulted in 'one-pass' tshark dissection redissecting
* the PDU repeatedly many, many times with each time dissecting
* the PDU with one or a few more additional fields.
* This generated *lots* of (repeated) output since a reassembled
* VNC PDU can contain many fields (each of short length).
* It also resulted in the fragment table containing many, many small fragments
* for VNC PDUS containing many small fields.
*
* The current reassembly method:
* Use DESEGMENT_ONE_MORE_SEGMENT when requesting additional data for a PDU.
* This significantly reduces the amount of repeated data in a dissection,
* but will still result in "partial" repeated dissection output in some cases.
*/
/* (Somewhat random notes while reviewing the code):
Check types, etc against IANA list
Optimize: Do col_set(..., COL_INFO) once (after fetching message type & before dispatching ?)
Dispatch via a message table (instead of using a switch(...)
Worry about globals (vnc_bytes_per_pixel & nc_depth): "Global so they keep their value between packets"
Msg type 150: client-server: enable/disable (1+9 bytes); server-client: endofContinousUpdates(1+0 bytes) ?
*/
#include "config.h"
#include <epan/packet.h>
#include <epan/conversation.h>
#include <epan/prefs.h>
#include <epan/expert.h>
#include <epan/proto_data.h>
#include "packet-x11.h" /* This contains the extern for the X11 value_string_ext
* "x11_keysym_vals_source_ext" that VNC uses. */
void proto_register_vnc(void);
typedef enum {
VNC_SECURITY_TYPE_INVALID = 0,
VNC_SECURITY_TYPE_NONE = 1,
VNC_SECURITY_TYPE_VNC = 2,
VNC_SECURITY_TYPE_RA2 = 5,
VNC_SECURITY_TYPE_RA2ne = 6,
VNC_SECURITY_TYPE_TIGHT = 16,
VNC_SECURITY_TYPE_ULTRA = 17,
VNC_SECURITY_TYPE_TLS = 18,
VNC_SECURITY_TYPE_VENCRYPT = 19,
VNC_SECURITY_TYPE_GTK_VNC_SASL = 20,
VNC_SECURITY_TYPE_MD5_HASH_AUTH = 21,
VNC_SECURITY_TYPE_XVP = 22,
VNC_SECURITY_TYPE_ARD = 30,
VNC_TIGHT_AUTH_TGHT_ULGNAUTH = 119,
VNC_TIGHT_AUTH_TGHT_XTRNAUTH = 130
} vnc_security_types_e;
static const value_string vnc_security_types_vs[] = {
{ VNC_SECURITY_TYPE_INVALID, "Invalid" },
{ VNC_SECURITY_TYPE_NONE, "None" },
{ VNC_SECURITY_TYPE_VNC, "VNC" },
{ VNC_SECURITY_TYPE_RA2, "RA2" },
{ VNC_SECURITY_TYPE_RA2ne, "RA2ne" },
{ VNC_SECURITY_TYPE_TIGHT, "Tight" },
{ VNC_SECURITY_TYPE_ULTRA, "Ultra" },
{ VNC_SECURITY_TYPE_TLS, "TLS" },
{ VNC_SECURITY_TYPE_VENCRYPT, "VeNCrypt" },
{ VNC_SECURITY_TYPE_GTK_VNC_SASL, "GTK-VNC SASL" },
{ VNC_SECURITY_TYPE_ARD, "Apple Remote Desktop" },
{ 0, NULL }
};
static const true_false_string auth_result_tfs = {
"Failed",
"OK"
};
static const value_string yes_no_vs[] = {
{ 0, "No" },
{ 1, "Yes" },
{ 0, NULL }
};
typedef enum {
/* Required */
VNC_CLIENT_MESSAGE_TYPE_SET_PIXEL_FORMAT = 0,
VNC_CLIENT_MESSAGE_TYPE_SET_ENCODINGS = 2,
VNC_CLIENT_MESSAGE_TYPE_FRAMEBUF_UPDATE_REQ = 3,
VNC_CLIENT_MESSAGE_TYPE_KEY_EVENT = 4,
VNC_CLIENT_MESSAGE_TYPE_POINTER_EVENT = 5,
VNC_CLIENT_MESSAGE_TYPE_CLIENT_CUT_TEXT = 6,
/* Optional */
VNC_CLIENT_MESSAGE_TYPE_MIRRORLINK = 128,
VNC_CLIENT_MESSAGE_TYPE_ENABLE_CONTINUOUS_UPDATES = 150, /* TightVNC */
VNC_CLIENT_MESSAGE_TYPE_FENCE = 248, /* TigerVNC */
VNC_CLIENT_MESSAGE_TYPE_XVP = 250,
VNC_CLIENT_MESSAGE_TYPE_SETR_DESKTOP_SIZE = 251,
VNC_CLIENT_MESSAGE_TYPE_TIGHT = 252,
VNC_CLIENT_MESSAGE_TYPE_GII = 253,
VNC_CLIENT_MESSAGE_TYPE_QEMU = 255
} vnc_client_message_types_e;
static const value_string vnc_client_message_types_vs[] = {
/* Required */
{ VNC_CLIENT_MESSAGE_TYPE_SET_PIXEL_FORMAT, "Set Pixel Format" },
{ VNC_CLIENT_MESSAGE_TYPE_SET_ENCODINGS, "Set Encodings" },
{ VNC_CLIENT_MESSAGE_TYPE_FRAMEBUF_UPDATE_REQ, "Framebuffer Update Request" },
{ VNC_CLIENT_MESSAGE_TYPE_KEY_EVENT, "Key Event" },
{ VNC_CLIENT_MESSAGE_TYPE_POINTER_EVENT, "Pointer Event" },
{ VNC_CLIENT_MESSAGE_TYPE_CLIENT_CUT_TEXT, "Cut Text" },
/* Optional */
{ VNC_CLIENT_MESSAGE_TYPE_MIRRORLINK, "MirrorLink" },
{ VNC_CLIENT_MESSAGE_TYPE_ENABLE_CONTINUOUS_UPDATES, "Enable Continuous Updates" },
{ VNC_CLIENT_MESSAGE_TYPE_FENCE, "Fence" },
{ VNC_CLIENT_MESSAGE_TYPE_XVP, "Xvp" },
{ VNC_CLIENT_MESSAGE_TYPE_SETR_DESKTOP_SIZE, "Setr Desktop Size" },
{ VNC_CLIENT_MESSAGE_TYPE_TIGHT, "Tight" },
{ VNC_CLIENT_MESSAGE_TYPE_GII, "Gii" },
{ VNC_CLIENT_MESSAGE_TYPE_QEMU, "Qemu" },
{ 0, NULL }
};
typedef enum {
VNC_SERVER_MESSAGE_TYPE_FRAMEBUFFER_UPDATE = 0,
VNC_SERVER_MESSAGE_TYPE_SET_COLORMAP_ENTRIES = 1,
VNC_SERVER_MESSAGE_TYPE_RING_BELL = 2,
VNC_SERVER_MESSAGE_TYPE_CUT_TEXT = 3,
VNC_SERVER_MESSAGE_TYPE_MIRRORLINK = 128,
VNC_SERVER_MESSAGE_TYPE_END_CONTINUOUS_UPDATES = 150, /* TightVNC */
VNC_SERVER_MESSAGE_TYPE_FENCE = 248, /* TigerVNC */
VNC_SERVER_MESSAGE_TYPE_XVP = 250,
VNC_SERVER_MESSAGE_TYPE_TIGHT = 252,
VNC_SERVER_MESSAGE_TYPE_GII = 253,
VNC_SERVER_MESSAGE_TYPE_QEMU = 255
} vnc_server_message_types_e;
static const value_string vnc_server_message_types_vs[] = {
{ VNC_SERVER_MESSAGE_TYPE_FRAMEBUFFER_UPDATE, "Framebuffer Update" },
{ VNC_SERVER_MESSAGE_TYPE_SET_COLORMAP_ENTRIES, "Set Colormap Entries" },
{ VNC_SERVER_MESSAGE_TYPE_RING_BELL, "Ring Bell" },
{ VNC_SERVER_MESSAGE_TYPE_CUT_TEXT, "Cut Text" },
{ VNC_SERVER_MESSAGE_TYPE_MIRRORLINK, "MirrorLink" },
{ VNC_SERVER_MESSAGE_TYPE_END_CONTINUOUS_UPDATES, "End Continuous Updates" },
{ VNC_SERVER_MESSAGE_TYPE_FENCE, "Fence" },
{ VNC_SERVER_MESSAGE_TYPE_XVP, "Xvp" },
{ VNC_SERVER_MESSAGE_TYPE_TIGHT, "Tight" },
{ VNC_SERVER_MESSAGE_TYPE_GII, "Gii" },
{ VNC_SERVER_MESSAGE_TYPE_QEMU, "Qemu" },
{ 0, NULL }
};
static const true_false_string button_mask_tfs = {
"Pressed",
"Not pressed"
};
#define VNC_ENCODING_TYPE_DESKTOP_SIZE 0xFFFFFF21
#define VNC_ENCODING_TYPE_LAST_RECT 0xFFFFFF20
#define VNC_ENCODING_TYPE_POINTER_POS 0xFFFFFF18
#define VNC_ENCODING_TYPE_RICH_CURSOR 0xFFFFFF11
#define VNC_ENCODING_TYPE_X_CURSOR 0xFFFFFF10
#define VNC_ENCODING_TYPE_RAW 0
#define VNC_ENCODING_TYPE_COPY_RECT 1
#define VNC_ENCODING_TYPE_RRE 2
#define VNC_ENCODING_TYPE_CORRE 4
#define VNC_ENCODING_TYPE_HEXTILE 5
#define VNC_ENCODING_TYPE_ZLIB 6
#define VNC_ENCODING_TYPE_TIGHT 7
#define VNC_ENCODING_TYPE_ZLIBHEX 8
#define VNC_ENCODING_TYPE_ULTRA 9
#define VNC_ENCODING_TYPE_TRLE 15
#define VNC_ENCODING_TYPE_RLE 16
#define VNC_ENCODING_TYPE_HITACHI_ZYWRLE 17
#define VNC_ENCODING_TYPE_JPEG_0 -32
#define VNC_ENCODING_TYPE_JPEG_1 -31
#define VNC_ENCODING_TYPE_JPEG_2 -30
#define VNC_ENCODING_TYPE_JPEG_3 -29
#define VNC_ENCODING_TYPE_JPEG_4 -28
#define VNC_ENCODING_TYPE_JPEG_5 -27
#define VNC_ENCODING_TYPE_JPEG_6 -26
#define VNC_ENCODING_TYPE_JPEG_7 -25
#define VNC_ENCODING_TYPE_JPEG_8 -24
#define VNC_ENCODING_TYPE_JPEG_9 -23
#define VNC_ENCODING_TYPE_COMPRESSION_0 0xFFFFFF00
#define VNC_ENCODING_TYPE_COMPRESSION_1 0xFFFFFF01
#define VNC_ENCODING_TYPE_COMPRESSION_2 0xFFFFFF02
#define VNC_ENCODING_TYPE_COMPRESSION_3 0xFFFFFF03
#define VNC_ENCODING_TYPE_COMPRESSION_4 0xFFFFFF04
#define VNC_ENCODING_TYPE_COMPRESSION_5 0xFFFFFF05
#define VNC_ENCODING_TYPE_COMPRESSION_6 0xFFFFFF06
#define VNC_ENCODING_TYPE_COMPRESSION_7 0xFFFFFF07
#define VNC_ENCODING_TYPE_COMPRESSION_8 0xFFFFFF08
#define VNC_ENCODING_TYPE_COMPRESSION_9 0xFFFFFF09
#define VNC_ENCODING_TYPE_WMVi 0x574D5669
#define VNC_ENCODING_TYPE_CACHE 0xFFFF0000
#define VNC_ENCODING_TYPE_CACHE_ENABLE 0xFFFF0001
#define VNC_ENCODING_TYPE_XOR_ZLIB 0xFFFF0002
#define VNC_ENCODING_TYPE_XOR_MONO_ZLIB 0xFFFF0003
#define VNC_ENCODING_TYPE_XOR_MULTI_ZLIB 0xFFFF0004
#define VNC_ENCODING_TYPE_SOLID_COLOR 0xFFFF0005
#define VNC_ENCODING_TYPE_XOR_ENABLE 0xFFFF0006
#define VNC_ENCODING_TYPE_CACHE_ZIP 0xFFFF0007
#define VNC_ENCODING_TYPE_SOL_MONO_ZIP 0xFFFF0008
#define VNC_ENCODING_TYPE_ULTRA_ZIP 0xFFFF0009
#define VNC_ENCODING_TYPE_SERVER_STATE 0xFFFF8000
#define VNC_ENCODING_TYPE_ENABLE_KEEP_ALIVE 0xFFFF8001
#define VNC_ENCODING_TYPE_FTP_PROTO_VER 0xFFFF8002
#define VNC_ENCODING_TYPE_POINTER_CHANGE -257
#define VNC_ENCODING_TYPE_EXT_KEY_EVENT -258
#define VNC_ENCODING_TYPE_AUDIO 259
#define VNC_ENCODING_TYPE_DESKTOP_NAME -307
#define VNC_ENCODING_TYPE_EXTENDED_DESK_SIZE -308
#define VNC_ENCODING_TYPE_KEYBOARD_LED_STATE 0XFFFE0000
#define VNC_ENCODING_TYPE_SUPPORTED_MESSAGES 0XFFFE0001
#define VNC_ENCODING_TYPE_SUPPORTED_ENCODINGS 0XFFFE0002
#define VNC_ENCODING_TYPE_SERVER_IDENTITY 0XFFFE0003
#define VNC_ENCODING_TYPE_MIRRORLINK 0xFFFFFDF5
#define VNC_ENCODING_TYPE_CONTEXT_INFORMATION 0xFFFFFDF4
#define VNC_ENCODING_TYPE_SLRLE 0xFFFFFDF3
#define VNC_ENCODING_TYPE_TRANSFORM 0xFFFFFDF2
#define VNC_ENCODING_TYPE_HSML 0xFFFFFDF1
#define VNC_ENCODING_TYPE_H264 0X48323634
static const value_string encoding_types_vs[] = {
{ VNC_ENCODING_TYPE_DESKTOP_SIZE, "DesktopSize (pseudo)" },
{ VNC_ENCODING_TYPE_LAST_RECT, "LastRect (pseudo)" },
{ VNC_ENCODING_TYPE_POINTER_POS, "Pointer pos (pseudo)" },
{ VNC_ENCODING_TYPE_RICH_CURSOR, "Rich Cursor (pseudo)" },
{ VNC_ENCODING_TYPE_X_CURSOR, "X Cursor (pseudo)" },
{ VNC_ENCODING_TYPE_RAW, "Raw" },
{ VNC_ENCODING_TYPE_COPY_RECT, "CopyRect" },
{ VNC_ENCODING_TYPE_RRE, "RRE" },
{ VNC_ENCODING_TYPE_CORRE, "CoRRE" },
{ VNC_ENCODING_TYPE_HEXTILE, "Hextile" },
{ VNC_ENCODING_TYPE_ZLIB, "Zlib" },
{ VNC_ENCODING_TYPE_TIGHT, "Tight" },
{ VNC_ENCODING_TYPE_ZLIBHEX, "ZlibHex" },
{ VNC_ENCODING_TYPE_ULTRA, "Ultra" },
{ VNC_ENCODING_TYPE_RLE, "ZRLE" },
{ VNC_ENCODING_TYPE_HITACHI_ZYWRLE, "Hitachi ZYWRLE" },
{ VNC_ENCODING_TYPE_JPEG_0, "JPEG quality level 0" },
{ VNC_ENCODING_TYPE_JPEG_1, "JPEG quality level 1" },
{ VNC_ENCODING_TYPE_JPEG_2, "JPEG quality level 2" },
{ VNC_ENCODING_TYPE_JPEG_3, "JPEG quality level 3" },
{ VNC_ENCODING_TYPE_JPEG_4, "JPEG quality level 4" },
{ VNC_ENCODING_TYPE_JPEG_5, "JPEG quality level 5" },
{ VNC_ENCODING_TYPE_JPEG_6, "JPEG quality level 6" },
{ VNC_ENCODING_TYPE_JPEG_7, "JPEG quality level 7" },
{ VNC_ENCODING_TYPE_JPEG_8, "JPEG quality level 8" },
{ VNC_ENCODING_TYPE_JPEG_9, "JPEG quality level 9" },
{ VNC_ENCODING_TYPE_COMPRESSION_0, "Compression level 0" },
{ VNC_ENCODING_TYPE_COMPRESSION_1, "Compression level 1" },
{ VNC_ENCODING_TYPE_COMPRESSION_2, "Compression level 2" },
{ VNC_ENCODING_TYPE_COMPRESSION_3, "Compression level 3" },
{ VNC_ENCODING_TYPE_COMPRESSION_4, "Compression level 4" },
{ VNC_ENCODING_TYPE_COMPRESSION_5, "Compression level 5" },
{ VNC_ENCODING_TYPE_COMPRESSION_6, "Compression level 6" },
{ VNC_ENCODING_TYPE_COMPRESSION_7, "Compression level 7" },
{ VNC_ENCODING_TYPE_COMPRESSION_8, "Compression level 8" },
{ VNC_ENCODING_TYPE_COMPRESSION_9, "Compression level 9" },
/* FIXME understand for real what the below mean. Taken from Ultra VNC source code */
/* { VNC_ENCODING_TYPE_CACHE, */
{ VNC_ENCODING_TYPE_CACHE_ENABLE, "Enable Caching"},
/* { VNC_ENCODING_TYPE_XOR_ZLIB,
{ VNC_ENCODING_TYPE_XOR_MONO_ZLIB,
{ VNC_ENCODING_TYPE_XOR_MULTI_ZLIB,
{ VNC_ENCODING_TYPE_SOLID_COLOR,
{ VNC_ENCODING_TYPE_XOR_ENABLE,
{ VNC_ENCODING_TYPE_CACHE_ZIP,
{ VNC_ENCODING_TYPE_SOL_MONO_ZIP,
{ VNC_ENCODING_TYPE_ULTRA_ZIP,
*/ { VNC_ENCODING_TYPE_SERVER_STATE, "Server State" },
{ VNC_ENCODING_TYPE_ENABLE_KEEP_ALIVE, "Enable Keep Alive" },
{ VNC_ENCODING_TYPE_FTP_PROTO_VER, "FTP protocol version" },
{ VNC_ENCODING_TYPE_EXTENDED_DESK_SIZE, "Extended Desktop Size"},
{ VNC_ENCODING_TYPE_DESKTOP_NAME, "Desktop Name" },
{ VNC_ENCODING_TYPE_KEYBOARD_LED_STATE, "Keyboard LED State" },
{ VNC_ENCODING_TYPE_SUPPORTED_MESSAGES, "Supported Messages" },
{ VNC_ENCODING_TYPE_SUPPORTED_ENCODINGS, "Supported Encodings" },
{ VNC_ENCODING_TYPE_SERVER_IDENTITY, "Server Identity" },
{ VNC_ENCODING_TYPE_MIRRORLINK, "MirrorLink" },
{ VNC_ENCODING_TYPE_CONTEXT_INFORMATION, "Context Information" },
{ VNC_ENCODING_TYPE_SLRLE, "SLRLE" },
{ VNC_ENCODING_TYPE_TRANSFORM, "Transform" },
{ VNC_ENCODING_TYPE_HSML, "HSML" },
{ VNC_ENCODING_TYPE_H264, "H264" },
{ 0, NULL }
};
/* Rectangle types for Tight encoding. These come in the "control byte" at the
* start of a rectangle's payload. Note that these are with respect to the most
* significant bits 4-7 of the control byte, so you must shift it to the right 4
* bits before comparing against these values.
*/
#define TIGHT_RECT_FILL 0x08
#define TIGHT_RECT_JPEG 0x09
#define TIGHT_RECT_MAX_VALUE 0x09
#define TIGHT_RECT_EXPLICIT_FILTER_FLAG 0x04
/* Filter types for Basic encoding of Tight rectangles */
#define TIGHT_RECT_FILTER_COPY 0x00
#define TIGHT_RECT_FILTER_PALETTE 0x01
#define TIGHT_RECT_FILTER_GRADIENT 0x02
/* Minimum number of bytes to compress for Tight encoding */
#define TIGHT_MIN_BYTES_TO_COMPRESS 12
static const value_string tight_filter_ids_vs[] = {
{ TIGHT_RECT_FILTER_COPY, "Copy" },
{ TIGHT_RECT_FILTER_PALETTE, "Palette" },
{ TIGHT_RECT_FILTER_GRADIENT, "Gradient" },
{ 0, NULL }
};
/* MirrorLink messages */
typedef enum {
VNC_ML_EXT_BYE_BYE = 0,
VNC_ML_EXT_SERVER_DISPLAY_CONFIGURATION = 1,
VNC_ML_EXT_CLIENT_DISPLAY_CONFIGURATION = 2,
VNC_ML_EXT_SERVER_EVENT_CONFIGURATION = 3,
VNC_ML_EXT_CLIENT_EVENT_CONFIGURATION = 4,
VNC_ML_EXT_EVENT_MAPPING = 5,
VNC_ML_EXT_EVENT_MAPPING_REQUEST = 6,
VNC_ML_EXT_KEY_EVENT_LISTING = 7,
VNC_ML_EXT_KEY_EVENT_LISTING_REQUEST = 8,
VNC_ML_EXT_VIRTUAL_KEYBOARD = 9,
VNC_ML_EXT_VIRTUAL_KEYBOARD_REQUEST = 10,
VNC_ML_EXT_DEVICE_STATUS = 11,
VNC_ML_EXT_DEVICE_STATUS_REQUEST = 12,
VNC_ML_EXT_CONTENT_ATTESTATION = 13,
VNC_ML_EXT_CONTENT_ATTESTATION_REQUEST = 14,
VNC_ML_EXT_FB_BLOCKING_NOTIFICATION = 16,
VNC_ML_EXT_AUDIO_BLOCKING_NOTIFICATION = 18,
VNC_ML_EXT_TOUCH_EVENT = 20,
VNC_ML_EXT_FB_ALTERNATIVE_TEXT = 21,
VNC_ML_EXT_FB_ALTERNATIVE_TEXT_REQUEST = 22
} vnc_mirrorlink_ext_types_e;
static const value_string vnc_mirrorlink_types_vs[] = {
{ VNC_ML_EXT_BYE_BYE, "ByeBye" },
{ VNC_ML_EXT_SERVER_DISPLAY_CONFIGURATION, "Server Display Configuration" },
{ VNC_ML_EXT_CLIENT_DISPLAY_CONFIGURATION, "Client Display Configuration" },
{ VNC_ML_EXT_SERVER_EVENT_CONFIGURATION, "Server Event Configuration" },
{ VNC_ML_EXT_CLIENT_EVENT_CONFIGURATION, "Client Event Configuration" },
{ VNC_ML_EXT_EVENT_MAPPING, "Event Mapping" },
{ VNC_ML_EXT_EVENT_MAPPING_REQUEST, "Event Mapping Request" },
{ VNC_ML_EXT_KEY_EVENT_LISTING, "Key Event Listing" },
{ VNC_ML_EXT_KEY_EVENT_LISTING_REQUEST, "Key Event Listing Request" },
{ VNC_ML_EXT_VIRTUAL_KEYBOARD, "Virtual Keyboard Trigger" },
{ VNC_ML_EXT_VIRTUAL_KEYBOARD_REQUEST, "Virtual Keyboard Trigger Request" },
{ VNC_ML_EXT_DEVICE_STATUS, "Device Status" },
{ VNC_ML_EXT_DEVICE_STATUS_REQUEST, "Device Status Request" },
{ VNC_ML_EXT_CONTENT_ATTESTATION, "Content Attestation" },
{ VNC_ML_EXT_CONTENT_ATTESTATION_REQUEST, "Content Attestation Request" },
{ VNC_ML_EXT_FB_BLOCKING_NOTIFICATION, "Framebuffer Blocking Notification" },
{ VNC_ML_EXT_AUDIO_BLOCKING_NOTIFICATION, "Audio Blocking Notification" },
{ VNC_ML_EXT_TOUCH_EVENT, "Touch Event" },
{ VNC_ML_EXT_FB_ALTERNATIVE_TEXT, "Framebuffer Alternative Text" },
{ VNC_ML_EXT_FB_ALTERNATIVE_TEXT_REQUEST, "Framebuffer Alternative Text Request" },
{ 0, NULL }
};
/* Slice types for H.264 encoding */
typedef enum {
VNC_H264_SLICE_TYPE_P = 0,
VNC_H264_SLICE_TYPE_B = 1,
VNC_H264_SLICE_TYPE_I = 2
} vnc_h264_slice_types_e;
static const value_string vnc_h264_slice_types_vs[] = {
{ VNC_H264_SLICE_TYPE_P, "Predicted" },
{ VNC_H264_SLICE_TYPE_B, "Bi-predicted" },
{ VNC_H264_SLICE_TYPE_I, "Intra coded" },
{ 0, NULL }
};
typedef enum {
VNC_SESSION_STATE_SERVER_VERSION,
VNC_SESSION_STATE_CLIENT_VERSION,
VNC_SESSION_STATE_SECURITY,
VNC_SESSION_STATE_SECURITY_TYPES,
VNC_SESSION_STATE_TIGHT_TUNNELING_CAPABILITIES,
VNC_SESSION_STATE_TIGHT_TUNNEL_TYPE_REPLY,
VNC_SESSION_STATE_TIGHT_AUTH_CAPABILITIES,
VNC_SESSION_STATE_TIGHT_AUTH_TYPE_REPLY,
VNC_SESSION_STATE_TIGHT_UNKNOWN_PACKET3,
VNC_SESSION_STATE_VNC_AUTHENTICATION_CHALLENGE,
VNC_SESSION_STATE_VNC_AUTHENTICATION_RESPONSE,
VNC_SESSION_STATE_ARD_AUTHENTICATION_CHALLENGE,
VNC_SESSION_STATE_ARD_AUTHENTICATION_RESPONSE,
VNC_SESSION_STATE_SECURITY_RESULT,
VNC_SESSION_STATE_CLIENT_INIT,
VNC_SESSION_STATE_SERVER_INIT,
VNC_SESSION_STATE_TIGHT_INTERACTION_CAPS,
VNC_SESSION_STATE_NORMAL_TRAFFIC
} vnc_session_state_e;
#define VNC_FENCE_BLOCK_BEFORE 0x00000001
#define VNC_FENCE_BLOCK_AFTER 0x00000002
#define VNC_FENCE_SYNC_NEXT 0x00000004
#define VNC_FENCE_REQUEST 0x80000000
/* This structure will be tied to each conversation. */
typedef struct {
gdouble server_proto_ver, client_proto_ver;
vnc_session_state_e vnc_next_state;
guint32 server_port;
/* These are specific to TightVNC */
gint num_server_message_types;
gint num_client_message_types;
gint num_encoding_types;
guint8 security_type_selected;
gboolean tight_enabled;
/* This is specific to Apple Remote Desktop */
guint16 ard_key_length;
} vnc_conversation_t;
/* This structure will be tied to each packet */
typedef struct {
vnc_session_state_e state;
gint preferred_encoding;
guint8 bytes_per_pixel;
guint8 depth;
} vnc_packet_t;
void proto_reg_handoff_vnc(void);
static gboolean vnc_startup_messages(tvbuff_t *tvb, packet_info *pinfo,
gint offset, proto_tree *tree,
vnc_conversation_t *per_conversation_info);
static void vnc_client_to_server(tvbuff_t *tvb, packet_info *pinfo,
gint *offset, proto_tree *tree);
static void vnc_server_to_client(tvbuff_t *tvb, packet_info *pinfo,
gint *offset, proto_tree *tree);
static void vnc_client_set_pixel_format(tvbuff_t *tvb, packet_info *pinfo,
gint *offset, proto_tree *tree);
static void vnc_client_set_encodings(tvbuff_t *tvb, packet_info *pinfo,
gint *offset, proto_tree *tree);
static void vnc_client_framebuffer_update_request(tvbuff_t *tvb,
packet_info *pinfo,
gint *offset,
proto_tree *tree);
static void vnc_client_key_event(tvbuff_t *tvb, packet_info *pinfo,
gint *offset, proto_tree *tree);
static void vnc_client_pointer_event(tvbuff_t *tvb, packet_info *pinfo,
gint *offset, proto_tree *tree);
static void vnc_client_cut_text(tvbuff_t *tvb, packet_info *pinfo, gint *offset,
proto_tree *tree);
static guint vnc_server_framebuffer_update(tvbuff_t *tvb, packet_info *pinfo,
gint *offset, proto_tree *tree);
static guint vnc_raw_encoding(tvbuff_t *tvb, packet_info *pinfo, gint *offset,
proto_tree *tree, const guint16 width, const guint16 height);
static guint vnc_copyrect_encoding(tvbuff_t *tvb, packet_info *pinfo,
gint *offset, proto_tree *tree,
const guint16 width, const guint16 height);
static guint vnc_rre_encoding(tvbuff_t *tvb, packet_info *pinfo, gint *offset,
proto_tree *tree, const guint16 width, const guint16 height);
static guint vnc_hextile_encoding(tvbuff_t *tvb, packet_info *pinfo,
gint *offset, proto_tree *tree,
const guint16 width, const guint16 height);
static guint vnc_zrle_encoding(tvbuff_t *tvb, packet_info *pinfo, gint *offset,
proto_tree *tree, const guint16 width, const guint16 height);
static guint vnc_tight_encoding(tvbuff_t *tvb, packet_info *pinfo, gint *offset,
proto_tree *tree, const guint16 width, const guint16 height);
static guint vnc_rich_cursor_encoding(tvbuff_t *tvb, packet_info *pinfo,
gint *offset, proto_tree *tree, const guint16 width,
const guint16 height);
static guint vnc_x_cursor_encoding(tvbuff_t *tvb, packet_info *pinfo,
gint *offset, proto_tree *tree, const guint16 width,
const guint16 height);
static guint vnc_server_set_colormap_entries(tvbuff_t *tvb, packet_info *pinfo,
gint *offset, proto_tree *tree);
static void vnc_server_ring_bell(tvbuff_t *tvb, packet_info *pinfo,
gint *offset, proto_tree *tree);
static guint vnc_server_cut_text(tvbuff_t *tvb, packet_info *pinfo,
gint *offset, proto_tree *tree);
static void vnc_set_bytes_per_pixel(packet_info *pinfo, const guint8 bytes_per_pixel);
static void vnc_set_depth(packet_info *pinfo, const guint8 depth);
static guint8 vnc_get_bytes_per_pixel(packet_info *pinfo);
static guint8 vnc_get_depth(packet_info *pinfo);
static guint32 vnc_extended_desktop_size(tvbuff_t *tvb, gint *offset, proto_tree *tree);
static guint vnc_supported_messages(tvbuff_t *tvb, gint *offset,
proto_tree *tree, const guint16 width);
static guint vnc_supported_encodings(tvbuff_t *tvb, gint *offset,
proto_tree *tree, const guint16 width,
const guint16 height);
static guint vnc_server_identity(tvbuff_t *tvb, gint *offset,
proto_tree *tree, const guint16 width);
static guint vnc_fence(tvbuff_t *tvb, packet_info *pinfo, gint *offset,
proto_tree *tree);
static guint vnc_mirrorlink(tvbuff_t *tvb, packet_info *pinfo, gint *offset,
proto_tree *tree);
static guint vnc_context_information(tvbuff_t *tvb, gint *offset,
proto_tree *tree);
static guint vnc_slrle_encoding(tvbuff_t *tvb, packet_info *pinfo, gint *offset,
proto_tree *tree, const guint16 height);
static guint vnc_h264_encoding(tvbuff_t *tvb, gint *offset, proto_tree *tree);
#define DEST_PORT_VNC pinfo->destport == 5500 || pinfo->destport == 5501 || \
pinfo->destport == 5900 || pinfo->destport == 5901 || \
pinfo->destport == vnc_preference_alternate_port
#define VNC_BYTES_NEEDED(a) \
if((a) > (guint)tvb_reported_length_remaining(tvb, *offset)) \
return (a);
/* Variables for our preferences */
static guint vnc_preference_alternate_port = 0;
/* Initialize the protocol and registered fields */
static int proto_vnc = -1; /* Protocol subtree */
static int hf_vnc_padding = -1;
static int hf_vnc_server_proto_ver = -1;
static int hf_vnc_client_proto_ver = -1;
static int hf_vnc_num_security_types = -1;
static int hf_vnc_security_type = -1;
static int hf_vnc_server_security_type = -1;
static int hf_vnc_client_security_type = -1;
static int hf_vnc_auth_challenge = -1;
static int hf_vnc_auth_response = -1;
static int hf_vnc_auth_result = -1;
static int hf_vnc_auth_error = -1;
static int hf_vnc_auth_error_length = -1;
static int hf_vnc_ard_auth_generator = -1;
static int hf_vnc_ard_auth_key_len = -1;
static int hf_vnc_ard_auth_modulus = -1;
static int hf_vnc_ard_auth_server_key = -1;
static int hf_vnc_ard_auth_credentials = -1;
static int hf_vnc_ard_auth_client_key = -1;
static int hf_vnc_share_desktop_flag = -1;
static int hf_vnc_width = -1;
static int hf_vnc_height = -1;
static int hf_vnc_server_bits_per_pixel = -1;
static int hf_vnc_server_depth = -1;
static int hf_vnc_server_big_endian_flag = -1;
static int hf_vnc_server_true_color_flag = -1;
static int hf_vnc_server_red_max = -1;
static int hf_vnc_server_green_max = -1;
static int hf_vnc_server_blue_max = -1;
static int hf_vnc_server_red_shift = -1;
static int hf_vnc_server_green_shift = -1;
static int hf_vnc_server_blue_shift = -1;
static int hf_vnc_desktop_name = -1;
static int hf_vnc_desktop_name_len = -1;
static int hf_vnc_desktop_screen_num = -1;
static int hf_vnc_desktop_screen_id = -1;
static int hf_vnc_desktop_screen_x = -1;
static int hf_vnc_desktop_screen_y = -1;
static int hf_vnc_desktop_screen_width = -1;
static int hf_vnc_desktop_screen_height = -1;
static int hf_vnc_desktop_screen_flags = -1;
static int hf_vnc_num_server_message_types = -1;
static int hf_vnc_num_client_message_types = -1;
static int hf_vnc_num_encoding_types = -1;
/********** Client Message Types **********/
static int hf_vnc_client_message_type = -1; /* A subtree under VNC */
static int hf_vnc_client_bits_per_pixel = -1;
static int hf_vnc_client_depth = -1;
static int hf_vnc_client_big_endian_flag = -1;
static int hf_vnc_client_true_color_flag = -1;
static int hf_vnc_client_red_max = -1;
static int hf_vnc_client_green_max = -1;
static int hf_vnc_client_blue_max = -1;
static int hf_vnc_client_red_shift = -1;
static int hf_vnc_client_green_shift = -1;
static int hf_vnc_client_blue_shift = -1;
/* Client Key Event */
static int hf_vnc_key_down = -1;
static int hf_vnc_key = -1;
/* Client Pointer Event */
static int hf_vnc_button_1_pos = -1;
static int hf_vnc_button_2_pos = -1;
static int hf_vnc_button_3_pos = -1;
static int hf_vnc_button_4_pos = -1;
static int hf_vnc_button_5_pos = -1;
static int hf_vnc_button_6_pos = -1;
static int hf_vnc_button_7_pos = -1;
static int hf_vnc_button_8_pos = -1;
static int hf_vnc_pointer_x_pos = -1;
static int hf_vnc_pointer_y_pos = -1;
/* Client Framebuffer Update Request */
static int hf_vnc_update_req_incremental = -1;
static int hf_vnc_update_req_x_pos = -1;
static int hf_vnc_update_req_y_pos = -1;
static int hf_vnc_update_req_width = -1;
static int hf_vnc_update_req_height = -1;
/* Client Set Encodings */
static int hf_vnc_encoding_num = -1;
static int hf_vnc_client_set_encodings_encoding_type = -1;
/* Client Cut Text */
static int hf_vnc_client_cut_text_len = -1;
static int hf_vnc_client_cut_text = -1;
/********** Server Message Types **********/
static int hf_vnc_server_message_type = -1; /* Subtree */
/* Tunneling capabilities (TightVNC extension) */
static int hf_vnc_tight_num_tunnel_types = -1;
static int hf_vnc_tight_tunnel_type = -1;
/* Authentication capabilities (TightVNC extension) */
static int hf_vnc_tight_num_auth_types = -1;
static int hf_vnc_tight_auth_code = -1;
/* TightVNC capabilities */
static int hf_vnc_tight_server_message_type = -1;
static int hf_vnc_tight_server_vendor = -1;
static int hf_vnc_tight_signature = -1;
static int hf_vnc_tight_server_name = -1;
static int hf_vnc_tight_client_message_type = -1;
static int hf_vnc_tight_client_vendor = -1;
static int hf_vnc_tight_client_name = -1;
static int hf_vnc_tight_encoding_type = -1;
static int hf_vnc_tight_encoding_vendor = -1;
static int hf_vnc_tight_encoding_name = -1;
/* Tight compression parameters */
static int hf_vnc_tight_reset_stream0 = -1;
static int hf_vnc_tight_reset_stream1 = -1;
static int hf_vnc_tight_reset_stream2 = -1;
static int hf_vnc_tight_reset_stream3 = -1;
static int hf_vnc_tight_rect_type = -1;
static int hf_vnc_tight_image_len = -1;
static int hf_vnc_tight_image_data = -1;
static int hf_vnc_tight_fill_color = -1;
static int hf_vnc_tight_filter_flag = -1;
static int hf_vnc_tight_filter_id = -1;
static int hf_vnc_tight_palette_num_colors = -1;
static int hf_vnc_tight_palette_data = -1;
/* Server Framebuffer Update */
static int hf_vnc_rectangle_num = -1;
static int hf_vnc_fb_update_x_pos = -1;
static int hf_vnc_fb_update_y_pos = -1;
static int hf_vnc_fb_update_width = -1;
static int hf_vnc_fb_update_height = -1;
static int hf_vnc_fb_update_encoding_type = -1;
/* Raw Encoding */
static int hf_vnc_raw_pixel_data = -1;
/* CopyRect Encoding */
static int hf_vnc_copyrect_src_x_pos = -1;
static int hf_vnc_copyrect_src_y_pos = -1;
/* RRE Encoding */
static int hf_vnc_rre_num_subrects = -1;
static int hf_vnc_rre_bg_pixel = -1;
static int hf_vnc_rre_subrect_pixel = -1;
static int hf_vnc_rre_subrect_x_pos = -1;
static int hf_vnc_rre_subrect_y_pos = -1;
static int hf_vnc_rre_subrect_width = -1;
static int hf_vnc_rre_subrect_height = -1;
/* Hextile Encoding */
static int hf_vnc_hextile_subencoding_mask = -1;
static int hf_vnc_hextile_raw = -1;
static int hf_vnc_hextile_raw_value = -1;
static int hf_vnc_hextile_bg = -1;
static int hf_vnc_hextile_bg_value = -1;
static int hf_vnc_hextile_fg = -1;
static int hf_vnc_hextile_fg_value = -1;
static int hf_vnc_hextile_anysubrects = -1;
static int hf_vnc_hextile_num_subrects = -1;
static int hf_vnc_hextile_subrectscolored = -1;
static int hf_vnc_hextile_subrect_pixel_value = -1;
static int hf_vnc_hextile_subrect_x_pos = -1;
static int hf_vnc_hextile_subrect_y_pos = -1;
static int hf_vnc_hextile_subrect_width = -1;
static int hf_vnc_hextile_subrect_height = -1;
/* ZRLE Encoding */
static int hf_vnc_zrle_len = -1;
static int hf_vnc_zrle_subencoding = -1;
static int hf_vnc_zrle_rle = -1;
static int hf_vnc_zrle_palette_size = -1;
static int hf_vnc_zrle_data = -1;
static int hf_vnc_zrle_raw = -1;
static int hf_vnc_zrle_palette = -1;
/* Cursor Encoding */
static int hf_vnc_cursor_x_fore_back = -1;
static int hf_vnc_cursor_encoding_pixels = -1;
static int hf_vnc_cursor_encoding_bitmask = -1;
/* Server Set Colormap Entries */
static int hf_vnc_color_groups = -1;
static int hf_vnc_colormap_first_color = -1;
static int hf_vnc_colormap_num_colors = -1;
static int hf_vnc_colormap_red = -1;
static int hf_vnc_colormap_green = -1;
static int hf_vnc_colormap_blue = -1;
/* Server Cut Text */
static int hf_vnc_server_cut_text_len = -1;
static int hf_vnc_server_cut_text = -1;
/* LibVNCServer additions */
static int hf_vnc_supported_messages_client2server = -1;
static int hf_vnc_supported_messages_server2client = -1;
static int hf_vnc_num_supported_encodings = -1;
static int hf_vnc_supported_encodings = -1;
static int hf_vnc_server_identity = -1;
/* MirrorLink */
static int hf_vnc_mirrorlink_type = -1;
static int hf_vnc_mirrorlink_length = -1;
static int hf_vnc_mirrorlink_version_major = -1;
static int hf_vnc_mirrorlink_version_minor = -1;
static int hf_vnc_mirrorlink_framebuffer_configuration = -1;
static int hf_vnc_mirrorlink_pixel_width = -1;
static int hf_vnc_mirrorlink_pixel_height = -1;
static int hf_vnc_mirrorlink_pixel_format = -1;
static int hf_vnc_mirrorlink_display_width = -1;
static int hf_vnc_mirrorlink_display_height = -1;
static int hf_vnc_mirrorlink_display_distance = -1;
static int hf_vnc_mirrorlink_keyboard_language = -1;
static int hf_vnc_mirrorlink_keyboard_country = -1;
static int hf_vnc_mirrorlink_ui_language = -1;
static int hf_vnc_mirrorlink_ui_country = -1;
static int hf_vnc_mirrorlink_knob_keys = -1;
static int hf_vnc_mirrorlink_device_keys = -1;
static int hf_vnc_mirrorlink_multimedia_keys = -1;
static int hf_vnc_mirrorlink_key_related = -1;
static int hf_vnc_mirrorlink_pointer_related = -1;
static int hf_vnc_mirrorlink_key_symbol_value_client = -1;
static int hf_vnc_mirrorlink_key_symbol_value_server = -1;
static int hf_vnc_mirrorlink_key_configuration = -1;
static int hf_vnc_mirrorlink_key_num_events = -1;
static int hf_vnc_mirrorlink_key_event_counter = -1;
static int hf_vnc_mirrorlink_key_symbol_value = -1;
static int hf_vnc_mirrorlink_key_request_configuration = -1;
static int hf_vnc_mirrorlink_keyboard_configuration = -1;
static int hf_vnc_mirrorlink_cursor_x = -1;
static int hf_vnc_mirrorlink_cursor_y = -1;
static int hf_vnc_mirrorlink_text_x = -1;
static int hf_vnc_mirrorlink_text_y = -1;
static int hf_vnc_mirrorlink_text_width = -1;
static int hf_vnc_mirrorlink_text_height = -1;
static int hf_vnc_mirrorlink_keyboard_request_configuration = -1;
static int hf_vnc_mirrorlink_device_status = -1;
static int hf_vnc_mirrorlink_app_id = -1;
static int hf_vnc_mirrorlink_fb_block_x = -1;
static int hf_vnc_mirrorlink_fb_block_y = -1;
static int hf_vnc_mirrorlink_fb_block_width = -1;
static int hf_vnc_mirrorlink_fb_block_height = -1;
static int hf_vnc_mirrorlink_fb_block_reason = -1;
static int hf_vnc_mirrorlink_audio_block_reason = -1;
static int hf_vnc_mirrorlink_touch_num_events = -1;
static int hf_vnc_mirrorlink_touch_x = -1;
static int hf_vnc_mirrorlink_touch_y = -1;
static int hf_vnc_mirrorlink_touch_id = -1;
static int hf_vnc_mirrorlink_touch_pressure = -1;
static int hf_vnc_mirrorlink_text = -1;
static int hf_vnc_mirrorlink_text_length = -1;
static int hf_vnc_mirrorlink_text_max_length = -1;
static int hf_vnc_mirrorlink_unknown = -1;
/* Fence */
static int hf_vnc_fence_flags = -1;
static int hf_vnc_fence_request = -1;
static int hf_vnc_fence_sync_next = -1;
static int hf_vnc_fence_block_after = -1;
static int hf_vnc_fence_block_before = -1;
static int hf_vnc_fence_payload_length = -1;
static int hf_vnc_fence_payload = -1;
static const int *vnc_fence_flags[] = {
&hf_vnc_fence_request,
&hf_vnc_fence_sync_next,
&hf_vnc_fence_block_after,
&hf_vnc_fence_block_before,
NULL
};
/* Context Information */
static int hf_vnc_context_information_app_id = -1;
static int hf_vnc_context_information_app_category = -1;
static int hf_vnc_context_information_app_trust_level = -1;
static int hf_vnc_context_information_content_category = -1;
static int hf_vnc_context_information_content_rules = -1;
static int hf_vnc_context_information_content_trust_level = -1;
/* Scan Line based Run-Length Encoding */
static int hf_vnc_slrle_run_num = -1;
static int hf_vnc_slrle_run_data = -1;
/* H.264 Encoding */
static int hf_vnc_h264_slice_type = -1;
static int hf_vnc_h264_nbytes = -1;
static int hf_vnc_h264_width = -1;
static int hf_vnc_h264_height = -1;
static int hf_vnc_h264_data = -1;
/********** End of Server Message Types **********/
static gboolean vnc_preference_desegment = TRUE;
/* Initialize the subtree pointers */
static gint ett_vnc = -1;
static gint ett_vnc_client_message_type = -1;
static gint ett_vnc_server_message_type = -1;
static gint ett_vnc_rect = -1;
static gint ett_vnc_encoding_type = -1;
static gint ett_vnc_rre_subrect = -1;
static gint ett_vnc_hextile_subencoding_mask = -1;
static gint ett_vnc_hextile_num_subrects = -1;
static gint ett_vnc_hextile_subrect = -1;
static gint ett_vnc_hextile_tile = -1;
static gint ett_vnc_zrle_subencoding = -1;
static gint ett_vnc_colormap_num_groups = -1;
static gint ett_vnc_colormap_color_group = -1;
static gint ett_vnc_desktop_screen = -1;
static gint ett_vnc_key_events = -1;
static gint ett_vnc_touch_events = -1;
static gint ett_vnc_slrle_subline = -1;
static gint ett_vnc_fence_flags = -1;
static expert_field ei_vnc_possible_gtk_vnc_bug = EI_INIT;
static expert_field ei_vnc_auth_code_mismatch = EI_INIT;
static expert_field ei_vnc_unknown_tight_vnc_auth = EI_INIT;
static expert_field ei_vnc_too_many_rectangles = EI_INIT;
static expert_field ei_vnc_too_many_sub_rectangles = EI_INIT;
static expert_field ei_vnc_invalid_encoding = EI_INIT;
static expert_field ei_vnc_too_many_colors = EI_INIT;
static expert_field ei_vnc_too_many_cut_text = EI_INIT;
static expert_field ei_vnc_zrle_failed = EI_INIT;
static expert_field ei_vnc_unknown_tight = EI_INIT;
static expert_field ei_vnc_reassemble = EI_INIT;
/* Global so they keep their value between packets */
guint8 vnc_bytes_per_pixel;
guint8 vnc_depth;
static dissector_handle_t vnc_handle;
/* Code to dissect the packets */
static int
dissect_vnc(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
{
gboolean ret;
gint offset = 0;
/* Set up structures needed to add the protocol subtree and manage it */
proto_item *ti;
proto_tree *vnc_tree;
conversation_t *conversation;
vnc_conversation_t *per_conversation_info;
conversation = find_or_create_conversation(pinfo);
/* Retrieve information from conversation, or add it if it isn't
* there yet */
per_conversation_info = (vnc_conversation_t *)conversation_get_proto_data(conversation, proto_vnc);
if(!per_conversation_info) {
per_conversation_info = wmem_new(wmem_file_scope(), vnc_conversation_t);
per_conversation_info->vnc_next_state = VNC_SESSION_STATE_SERVER_VERSION;
per_conversation_info->security_type_selected = VNC_SECURITY_TYPE_INVALID;
per_conversation_info->tight_enabled = FALSE;
conversation_add_proto_data(conversation, proto_vnc, per_conversation_info);
}
/* Make entries in Protocol column and Info column on summary display */
col_set_str(pinfo->cinfo, COL_PROTOCOL, "VNC");
/* First, clear the info column */
col_clear(pinfo->cinfo, COL_INFO);
/* create display subtree for the protocol */
ti = proto_tree_add_item(tree, proto_vnc, tvb, 0, -1, ENC_NA);
vnc_tree = proto_item_add_subtree(ti, ett_vnc);
/* Dissect any remaining session startup messages */
ret = vnc_startup_messages(tvb, pinfo, offset, vnc_tree,
per_conversation_info);
vnc_set_bytes_per_pixel(pinfo, vnc_bytes_per_pixel);
vnc_set_depth(pinfo, vnc_depth);
if (ret) {
return tvb_captured_length(tvb); /* We're in a "startup" state; Cannot yet do "normal" processing */
}
if(DEST_PORT_VNC || per_conversation_info->server_port == pinfo->destport) {
vnc_client_to_server(tvb, pinfo, &offset, vnc_tree);
}
else {
vnc_server_to_client(tvb, pinfo, &offset, vnc_tree);
}
return tvb_captured_length(tvb);
}
/* Returns the new offset after processing the 4-byte vendor string */
static gint
process_vendor(proto_tree *tree, gint hfindex, tvbuff_t *tvb, gint offset)
{
const guint8 *vendor;
proto_item *ti;
if (tree) {
ti = proto_tree_add_item_ret_string(tree, hfindex, tvb, offset, 4, ENC_ASCII|ENC_NA, wmem_packet_scope(), &vendor);
if(g_ascii_strcasecmp(vendor, "STDV") == 0)
proto_item_append_text(ti, " (Standard VNC vendor)");
else if(g_ascii_strcasecmp(vendor, "TRDV") == 0)
proto_item_append_text(ti, " (Tridia VNC vendor)");
else if(g_ascii_strcasecmp(vendor, "TGHT") == 0)
proto_item_append_text(ti, " (Tight VNC vendor)");
}
offset += 4;
return offset;
}
/* Returns the new offset after processing the specified number of capabilities */
static gint
process_tight_capabilities(proto_tree *tree,
gint type_index, gint vendor_index, gint name_index,
tvbuff_t *tvb, gint offset, const gint num_capabilities)
{
gint i;
/* See vnc_unixsrc/include/rfbproto.h:rfbCapabilityInfo */
for (i = 0; i < num_capabilities; i++) {
proto_tree_add_item(tree, type_index, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
offset = process_vendor(tree, vendor_index, tvb, offset);
proto_tree_add_item(tree, name_index, tvb, offset, 8, ENC_ASCII|ENC_NA);
offset += 8;
}
return offset;
}
/* Returns true if this looks like a client or server version packet: 12 bytes, in the format "RFB xxx.yyy\n" .
* Will check for the 12 bytes exact length, the 'RFB ' string and that it ends with a '\n'.
* The exact 'xxx.yyy' is checked later, by trying to convert it to a double using g_ascii_strtod.
* pinfo and tree are NULL when using this function to check the heuristics for dissection. If we're
* checking the heuristics, we don't need to add expert_info, we just reject that packet as not
* being a VNC packet.
*/
static gboolean
vnc_is_client_or_server_version_message(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
if(tvb_captured_length(tvb) != 12) {
return FALSE;
}
if(tvb_strncaseeql(tvb, 0, "RFB ", 4) != 0) {
return FALSE;
}
/* 0x2e = '.' 0xa = '\n' */
if (tvb_get_guint8(tvb, 7) != 0x2e) {
return FALSE;
}
if (tvb_get_guint8(tvb,11) != 0xa) {
if (tvb_get_guint8(tvb,11) == 0) {
/* Per bug 5469, It appears that any VNC clients using gtk-vnc before [1] was
* fixed will exhibit the described protocol violation that prevents wireshark
* from dissecting the session.
*
* [1] http://git.gnome.org/browse/gtk-vnc/commit/?id=bc9e2b19167686dd381a0508af1a5113675d08a2
*/
if ((pinfo != NULL) && (tree != NULL)) {
proto_tree_add_expert(tree, pinfo, &ei_vnc_possible_gtk_vnc_bug, tvb, -1, 0);
}
return TRUE;
}
return FALSE;
}
return TRUE;
}
static gboolean test_vnc_protocol(tvbuff_t *tvb, packet_info *pinfo,
proto_tree *tree, void *data _U_)
{
conversation_t *conversation;
if (vnc_is_client_or_server_version_message(tvb, NULL, NULL)) {
conversation = conversation_new(pinfo->num, &pinfo->src,
&pinfo->dst, pinfo->ptype,
pinfo->srcport,
pinfo->destport, 0);
conversation_set_dissector(conversation, vnc_handle);
dissect_vnc(tvb, pinfo, tree, data);
return TRUE;
}
return FALSE;
}
/* Returns true if additional session startup messages follow */
static gboolean
vnc_startup_messages(tvbuff_t *tvb, packet_info *pinfo, gint offset,
proto_tree *tree, vnc_conversation_t
*per_conversation_info)
{
guint8 num_security_types;
guint32 desktop_name_len, auth_result, text_len, auth_code;
vnc_packet_t *per_packet_info;
gint num_tunnel_types;
gint num_auth_types;
proto_item* auth_item;
per_packet_info = (vnc_packet_t *)p_get_proto_data(wmem_file_scope(), pinfo, proto_vnc, 0);
if(!per_packet_info) {
per_packet_info = wmem_new(wmem_file_scope(), vnc_packet_t);
per_packet_info->state = per_conversation_info->vnc_next_state;
per_packet_info->preferred_encoding = -1;
p_add_proto_data(wmem_file_scope(), pinfo, proto_vnc, 0, per_packet_info);
}
/* Packet dissection follows */
switch(per_packet_info->state) {
case VNC_SESSION_STATE_SERVER_VERSION :
if (!vnc_is_client_or_server_version_message(tvb, pinfo, tree))
return TRUE; /* we still hope to get a SERVER_VERSION message some day. Do not proceed yet */
proto_tree_add_item(tree, hf_vnc_server_proto_ver, tvb, 4,
7, ENC_ASCII|ENC_NA);
per_conversation_info->server_proto_ver =
g_ascii_strtod((char *)tvb_get_string_enc(wmem_packet_scope(), tvb, 4, 7, ENC_ASCII), NULL);
per_conversation_info->server_port = pinfo->srcport;
col_add_fstr(pinfo->cinfo, COL_INFO,
"Server protocol version: %s",
tvb_format_text(tvb, 4, 7));
per_conversation_info->vnc_next_state = VNC_SESSION_STATE_CLIENT_VERSION;
break;
case VNC_SESSION_STATE_CLIENT_VERSION :
if (!vnc_is_client_or_server_version_message(tvb, pinfo, tree))
return TRUE; /* we still hope to get a CLIENT_VERSION message some day. Do not proceed yet */
proto_tree_add_item(tree, hf_vnc_client_proto_ver, tvb,
4, 7, ENC_ASCII|ENC_NA);
per_conversation_info->client_proto_ver =
g_ascii_strtod((char *)tvb_get_string_enc(wmem_packet_scope(), tvb, 4, 7, ENC_ASCII), NULL);
col_add_fstr(pinfo->cinfo, COL_INFO,
"Client protocol version: %s",
tvb_format_text(tvb, 4, 7));
per_conversation_info->vnc_next_state = VNC_SESSION_STATE_SECURITY;
break;
case VNC_SESSION_STATE_SECURITY :
col_set_str(pinfo->cinfo, COL_INFO, "Security types supported");
/* We're checking against the client protocol version because
* the client is the final decider on which version to use
* after the server offers the highest version it supports. */
if(per_conversation_info->client_proto_ver >= 3.007) {
num_security_types = tvb_get_guint8(tvb, offset);
if (tree) {
proto_tree_add_item(tree,
hf_vnc_num_security_types,
tvb, offset, 1, ENC_BIG_ENDIAN);
for(offset = 1; offset <= num_security_types; offset++){
proto_tree_add_item(tree,
hf_vnc_security_type, tvb,
offset, 1, ENC_BIG_ENDIAN);
}
}
per_conversation_info->vnc_next_state = VNC_SESSION_STATE_SECURITY_TYPES;
} else {
/* Version < 3.007: The server decides the
* authentication type for us to use */
proto_tree_add_item(tree, hf_vnc_server_security_type,
tvb, offset, 4, ENC_BIG_ENDIAN);
/* The cast below is possible since in older versions of the protocol the only possible values are 0,1,2 */
per_conversation_info->security_type_selected = (guint8)tvb_get_ntohl(tvb, offset);
switch(per_conversation_info->security_type_selected) {
case VNC_SECURITY_TYPE_INVALID:
/* TODO: In this case (INVALID) the connection has failed */
/* and there should be an error string describing the error */
per_conversation_info->vnc_next_state = VNC_SESSION_STATE_SECURITY_TYPES;
break;
case VNC_SECURITY_TYPE_NONE:
per_conversation_info->vnc_next_state = VNC_SESSION_STATE_CLIENT_INIT;
break;
case VNC_SECURITY_TYPE_VNC:
per_conversation_info->vnc_next_state = VNC_SESSION_STATE_VNC_AUTHENTICATION_CHALLENGE;
break;
case VNC_SECURITY_TYPE_ARD:
per_conversation_info->vnc_next_state = VNC_SESSION_STATE_ARD_AUTHENTICATION_CHALLENGE;
break;
default:
/* Security type not supported by this dissector */
break;
}
}
break;
case VNC_SESSION_STATE_SECURITY_TYPES :
col_set_str(pinfo->cinfo, COL_INFO, "Authentication type selected by client");
proto_tree_add_item(tree, hf_vnc_client_security_type, tvb, offset, 1, ENC_BIG_ENDIAN);
per_conversation_info->security_type_selected =
tvb_get_guint8(tvb, offset);
switch(per_conversation_info->security_type_selected) {
case VNC_SECURITY_TYPE_NONE :
if(per_conversation_info->client_proto_ver >= 3.008)
per_conversation_info->vnc_next_state =
VNC_SESSION_STATE_SECURITY_RESULT;
else
per_conversation_info->vnc_next_state =
VNC_SESSION_STATE_CLIENT_INIT;
break;
case VNC_SECURITY_TYPE_VNC :
per_conversation_info->vnc_next_state =
VNC_SESSION_STATE_VNC_AUTHENTICATION_CHALLENGE;
break;
case VNC_SECURITY_TYPE_TIGHT :
per_conversation_info->vnc_next_state =
VNC_SESSION_STATE_TIGHT_TUNNELING_CAPABILITIES;
per_conversation_info->tight_enabled = TRUE;
break;
case VNC_SECURITY_TYPE_ARD:
per_conversation_info->vnc_next_state = VNC_SESSION_STATE_ARD_AUTHENTICATION_CHALLENGE;
break;
default :
/* Security type not supported by this dissector */
break;
}
break;
case VNC_SESSION_STATE_TIGHT_TUNNELING_CAPABILITIES :
{
gint i;
col_set_str(pinfo->cinfo, COL_INFO, "TightVNC tunneling capabilities supported");
proto_tree_add_item(tree, hf_vnc_tight_num_tunnel_types, tvb, offset, 4, ENC_BIG_ENDIAN);
num_tunnel_types = tvb_get_ntohl(tvb, offset);
offset += 4;
for(i = 0; i < num_tunnel_types; i++) {
/* TightVNC and Xvnc don't support any tunnel capabilities yet, but each capability
* is 16 bytes, so skip them.
*/
proto_tree_add_item(tree, hf_vnc_tight_tunnel_type, tvb, offset, 16, ENC_BIG_ENDIAN);
offset += 16;
}
if (num_tunnel_types == 0)
per_conversation_info->vnc_next_state = VNC_SESSION_STATE_TIGHT_AUTH_CAPABILITIES;
else
per_conversation_info->vnc_next_state = VNC_SESSION_STATE_TIGHT_TUNNEL_TYPE_REPLY;
break;
}
case VNC_SESSION_STATE_TIGHT_TUNNEL_TYPE_REPLY:
/* Neither TightVNC nor Xvnc implement this; they just have a placeholder that emits an error
* message and closes the connection (xserver/hw/vnc/auth.c:rfbProcessClientTunnelingType).
* We should actually never get here...
*/
break;
case VNC_SESSION_STATE_TIGHT_AUTH_CAPABILITIES:
col_set_str(pinfo->cinfo, COL_INFO, "TightVNC authentication capabilities supported");
proto_tree_add_item(tree, hf_vnc_tight_num_auth_types, tvb, offset, 4, ENC_BIG_ENDIAN);
num_auth_types = tvb_get_ntohl(tvb, offset);
offset += 4;
{
int i;
const guint8 *vendor, *signature;
for (i = 0; i < 1; i++) {
auth_code = tvb_get_ntohl(tvb, offset);
auth_item = proto_tree_add_item(tree, hf_vnc_tight_auth_code, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
vendor = tvb_get_string_enc(wmem_packet_scope(), tvb, offset, 4, ENC_ASCII);
process_vendor(tree, hf_vnc_tight_server_vendor, tvb, offset);
offset += 4;
proto_tree_add_item_ret_string(tree, hf_vnc_tight_signature, tvb, offset, 8, ENC_ASCII|ENC_NA, wmem_packet_scope(), &signature);
offset += 8;
switch(auth_code) {
case VNC_SECURITY_TYPE_NONE:
if ((g_ascii_strcasecmp(vendor, "STDV") != 0) || (g_ascii_strcasecmp(signature, "NOAUTH__") != 0)) {
expert_add_info(pinfo, auth_item, &ei_vnc_auth_code_mismatch);
}
break;
case VNC_SECURITY_TYPE_VNC:
if ((g_ascii_strcasecmp(vendor, "STDV") != 0) || (g_ascii_strcasecmp(signature, "VNCAUTH_") != 0)) {
expert_add_info(pinfo, auth_item, &ei_vnc_auth_code_mismatch);
}
break;
case VNC_SECURITY_TYPE_VENCRYPT:
if ((g_ascii_strcasecmp(vendor, "VENC") != 0) || (g_ascii_strcasecmp(signature, "VENCRYPT") != 0)) {
expert_add_info(pinfo, auth_item, &ei_vnc_auth_code_mismatch);
}
break;
case VNC_SECURITY_TYPE_GTK_VNC_SASL:
if ((g_ascii_strcasecmp(vendor, "GTKV") != 0) || (g_ascii_strcasecmp(signature, "SASL____") != 0)) {
expert_add_info(pinfo, auth_item, &ei_vnc_auth_code_mismatch);
}
break;
case VNC_TIGHT_AUTH_TGHT_ULGNAUTH:
if ((g_ascii_strcasecmp(vendor, "TGHT") != 0) || (g_ascii_strcasecmp(signature, "ULGNAUTH") != 0)) {
expert_add_info(pinfo, auth_item, &ei_vnc_auth_code_mismatch);
}
break;
case VNC_TIGHT_AUTH_TGHT_XTRNAUTH:
if ((g_ascii_strcasecmp(vendor, "TGHT") != 0) || (g_ascii_strcasecmp(signature, "XTRNAUTH") != 0)) {
expert_add_info(pinfo, auth_item, &ei_vnc_auth_code_mismatch);
}
break;
default:
expert_add_info(pinfo, auth_item, &ei_vnc_unknown_tight_vnc_auth);
break;
}
}
}
if (num_auth_types == 0)
per_conversation_info->vnc_next_state = VNC_SESSION_STATE_CLIENT_INIT;
else
per_conversation_info->vnc_next_state = VNC_SESSION_STATE_TIGHT_AUTH_TYPE_REPLY;
break;
case VNC_SESSION_STATE_TIGHT_AUTH_TYPE_REPLY:
col_set_str(pinfo->cinfo, COL_INFO, "TightVNC authentication type selected by client");
auth_code = tvb_get_ntohl(tvb, offset);
auth_item = proto_tree_add_item(tree, hf_vnc_tight_auth_code, tvb, offset, 4, ENC_BIG_ENDIAN);
switch(auth_code) {
case VNC_SECURITY_TYPE_NONE:
per_conversation_info->security_type_selected = VNC_SECURITY_TYPE_NONE;
per_conversation_info->vnc_next_state = VNC_SESSION_STATE_CLIENT_INIT;
break;
case VNC_SECURITY_TYPE_VNC:
per_conversation_info->security_type_selected = VNC_SECURITY_TYPE_VNC;
per_conversation_info->vnc_next_state = VNC_SESSION_STATE_VNC_AUTHENTICATION_CHALLENGE;
break;
case VNC_SECURITY_TYPE_GTK_VNC_SASL:
per_conversation_info->security_type_selected = VNC_SECURITY_TYPE_GTK_VNC_SASL;
/* TODO: dissection not implemented yet */
per_conversation_info->vnc_next_state = VNC_SESSION_STATE_TIGHT_UNKNOWN_PACKET3;
break;
case VNC_TIGHT_AUTH_TGHT_ULGNAUTH:
per_conversation_info->security_type_selected = VNC_TIGHT_AUTH_TGHT_ULGNAUTH;
/* TODO: dissection not implemented yet */
per_conversation_info->vnc_next_state = VNC_SESSION_STATE_TIGHT_UNKNOWN_PACKET3;
break;
case VNC_TIGHT_AUTH_TGHT_XTRNAUTH:
per_conversation_info->security_type_selected = VNC_TIGHT_AUTH_TGHT_XTRNAUTH;
/* TODO: dissection not implemented yet */
per_conversation_info->vnc_next_state = VNC_SESSION_STATE_TIGHT_UNKNOWN_PACKET3;
break;
default:
expert_add_info(pinfo, auth_item, &ei_vnc_unknown_tight_vnc_auth);
per_conversation_info->vnc_next_state = VNC_SESSION_STATE_TIGHT_UNKNOWN_PACKET3;
break;
}
break;
case VNC_SESSION_STATE_TIGHT_UNKNOWN_PACKET3 :
col_set_str(pinfo->cinfo, COL_INFO, "Unknown packet (TightVNC)");
proto_tree_add_expert(tree, pinfo, &ei_vnc_unknown_tight, tvb, offset, -1);
per_conversation_info->vnc_next_state =
VNC_SESSION_STATE_VNC_AUTHENTICATION_CHALLENGE;
break;
case VNC_SESSION_STATE_VNC_AUTHENTICATION_CHALLENGE :
col_set_str(pinfo->cinfo, COL_INFO, "Authentication challenge from server");
proto_tree_add_item(tree, hf_vnc_auth_challenge, tvb,
offset, 16, ENC_NA);
per_conversation_info->vnc_next_state =
VNC_SESSION_STATE_VNC_AUTHENTICATION_RESPONSE;
break;
case VNC_SESSION_STATE_VNC_AUTHENTICATION_RESPONSE :
col_set_str(pinfo->cinfo, COL_INFO, "Authentication response from client");
proto_tree_add_item(tree, hf_vnc_auth_response, tvb,
offset, 16, ENC_NA);
per_conversation_info->vnc_next_state = VNC_SESSION_STATE_SECURITY_RESULT;
break;
case VNC_SESSION_STATE_ARD_AUTHENTICATION_CHALLENGE :
{
gint key_len;
col_set_str(pinfo->cinfo, COL_INFO, "ARD authentication challenge");
proto_tree_add_item(tree, hf_vnc_ard_auth_generator, tvb,
offset, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tree, hf_vnc_ard_auth_key_len, tvb,
offset + 2, 2, ENC_BIG_ENDIAN);
key_len = tvb_get_ntohs(tvb, offset + 2);
offset += 4;
proto_tree_add_item(tree, hf_vnc_ard_auth_modulus, tvb,
offset, key_len, ENC_NA);
proto_tree_add_item(tree, hf_vnc_ard_auth_server_key, tvb,
offset + key_len, key_len, ENC_NA);
per_conversation_info->ard_key_length = key_len;
per_conversation_info->vnc_next_state =
VNC_SESSION_STATE_ARD_AUTHENTICATION_RESPONSE;
}
break;
case VNC_SESSION_STATE_ARD_AUTHENTICATION_RESPONSE :
col_set_str(pinfo->cinfo, COL_INFO, "ARD authentication response");
proto_tree_add_item(tree, hf_vnc_ard_auth_credentials, tvb,
offset, 128, ENC_NA);
proto_tree_add_item(tree, hf_vnc_ard_auth_client_key, tvb,
offset + 128, per_conversation_info->ard_key_length, ENC_NA);
per_conversation_info->vnc_next_state = VNC_SESSION_STATE_SECURITY_RESULT;
break;
case VNC_SESSION_STATE_SECURITY_RESULT :
col_set_str(pinfo->cinfo, COL_INFO, "Authentication result");
proto_tree_add_item(tree, hf_vnc_auth_result, tvb, offset,
4, ENC_BIG_ENDIAN);
auth_result = tvb_get_ntohl(tvb, offset);
offset += 4;
switch(auth_result) {
case 0 : /* OK */
per_conversation_info->vnc_next_state = VNC_SESSION_STATE_CLIENT_INIT;
break;
case 1 : /* Failed */
if(per_conversation_info->client_proto_ver >= 3.008) {
text_len = tvb_get_ntohl(tvb, offset);
proto_tree_add_item(tree, hf_vnc_auth_error_length, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
proto_tree_add_item(tree, hf_vnc_auth_error, tvb,
offset, text_len, ENC_ASCII|ENC_NA);
}
return TRUE; /* All versions: Do not continue
processing VNC packets as connection
will be closed after this packet. */
break;
}
break;
case VNC_SESSION_STATE_CLIENT_INIT :
col_set_str(pinfo->cinfo, COL_INFO, "Share desktop flag");
proto_tree_add_item(tree, hf_vnc_share_desktop_flag, tvb,
offset, 1, ENC_BIG_ENDIAN);
per_conversation_info->vnc_next_state = VNC_SESSION_STATE_SERVER_INIT;
break;
case VNC_SESSION_STATE_SERVER_INIT :
col_set_str(pinfo->cinfo, COL_INFO, "Server framebuffer parameters");
proto_tree_add_item(tree, hf_vnc_width, tvb, offset, 2,
ENC_BIG_ENDIAN);
offset += 2;
proto_tree_add_item(tree, hf_vnc_height, tvb, offset, 2,
ENC_BIG_ENDIAN);
offset += 2;
proto_tree_add_item(tree, hf_vnc_server_bits_per_pixel,
tvb, offset, 1, ENC_BIG_ENDIAN);
vnc_bytes_per_pixel = tvb_get_guint8(tvb, offset)/8;
vnc_set_bytes_per_pixel(pinfo, vnc_bytes_per_pixel);
offset += 1;
proto_tree_add_item(tree, hf_vnc_server_depth, tvb, offset,
1, ENC_BIG_ENDIAN);
offset += 1;
proto_tree_add_item(tree, hf_vnc_server_big_endian_flag,
tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
proto_tree_add_item(tree, hf_vnc_server_true_color_flag,
tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
proto_tree_add_item(tree, hf_vnc_server_red_max,
tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
proto_tree_add_item(tree, hf_vnc_server_green_max,
tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
proto_tree_add_item(tree, hf_vnc_server_blue_max,
tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
proto_tree_add_item(tree, hf_vnc_server_red_shift,
tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
proto_tree_add_item(tree, hf_vnc_server_green_shift,
tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
proto_tree_add_item(tree, hf_vnc_server_blue_shift,
tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
proto_tree_add_item(tree, hf_vnc_padding,
tvb, offset, 3, ENC_NA);
offset += 3; /* Skip over 3 bytes of padding */
if(tvb_reported_length_remaining(tvb, offset) > 4) {
/* Sometimes the desktop name & length is skipped */
proto_tree_add_item(tree, hf_vnc_desktop_name_len,
tvb, offset, 4, ENC_BIG_ENDIAN);
desktop_name_len = tvb_get_ntohl(tvb, offset);
offset += 4;
proto_tree_add_item(tree, hf_vnc_desktop_name,
tvb, offset, desktop_name_len,
ENC_ASCII|ENC_NA);
}
if(per_conversation_info->tight_enabled == TRUE)
per_conversation_info->vnc_next_state =
VNC_SESSION_STATE_TIGHT_INTERACTION_CAPS;
else
per_conversation_info->vnc_next_state = VNC_SESSION_STATE_NORMAL_TRAFFIC;
break;
case VNC_SESSION_STATE_TIGHT_INTERACTION_CAPS :
col_set_str(pinfo->cinfo, COL_INFO, "TightVNC Interaction Capabilities");
proto_tree_add_item(tree, hf_vnc_num_server_message_types,
tvb, offset, 2, ENC_BIG_ENDIAN);
per_conversation_info->num_server_message_types = tvb_get_ntohs(tvb, offset);
offset += 2;
proto_tree_add_item(tree, hf_vnc_num_client_message_types,
tvb, offset, 2, ENC_BIG_ENDIAN);
per_conversation_info->num_client_message_types = tvb_get_ntohs(tvb, offset);
offset += 2;
proto_tree_add_item(tree, hf_vnc_num_encoding_types,
tvb, offset, 2, ENC_BIG_ENDIAN);
per_conversation_info->num_encoding_types = tvb_get_ntohs(tvb, offset);
offset += 2;
proto_tree_add_item(tree, hf_vnc_padding, tvb, offset, 2, ENC_NA);
offset += 2;
offset = process_tight_capabilities(tree,
hf_vnc_tight_server_message_type,
hf_vnc_tight_server_vendor,
hf_vnc_tight_server_name,
tvb, offset, per_conversation_info->num_server_message_types);
offset = process_tight_capabilities(tree,
hf_vnc_tight_client_message_type,
hf_vnc_tight_client_vendor,
hf_vnc_tight_client_name,
tvb, offset, per_conversation_info->num_client_message_types);
process_tight_capabilities(tree,
hf_vnc_tight_encoding_type,
hf_vnc_tight_encoding_vendor,
hf_vnc_tight_encoding_name,
tvb, offset, per_conversation_info->num_encoding_types);
per_conversation_info->vnc_next_state = VNC_SESSION_STATE_NORMAL_TRAFFIC;
break;
case VNC_SESSION_STATE_NORMAL_TRAFFIC :
return FALSE;
}
return TRUE;
}
static void
vnc_client_to_server(tvbuff_t *tvb, packet_info *pinfo, gint *offset,
proto_tree *tree)
{
guint8 message_type;
proto_item *ti;
proto_tree *vnc_client_message_type_tree;
message_type = tvb_get_guint8(tvb, *offset);
ti = proto_tree_add_item(tree, hf_vnc_client_message_type, tvb,
*offset, 1, ENC_BIG_ENDIAN);
vnc_client_message_type_tree =
proto_item_add_subtree(ti, ett_vnc_client_message_type);
*offset += 1;
switch(message_type) {
case VNC_CLIENT_MESSAGE_TYPE_SET_PIXEL_FORMAT :
vnc_client_set_pixel_format(tvb, pinfo, offset,
vnc_client_message_type_tree);
break;
case VNC_CLIENT_MESSAGE_TYPE_SET_ENCODINGS :
vnc_client_set_encodings(tvb, pinfo, offset,
vnc_client_message_type_tree);
break;
case VNC_CLIENT_MESSAGE_TYPE_FRAMEBUF_UPDATE_REQ :
vnc_client_framebuffer_update_request(tvb, pinfo, offset,
vnc_client_message_type_tree);
break;
case VNC_CLIENT_MESSAGE_TYPE_KEY_EVENT :
vnc_client_key_event(tvb, pinfo, offset,
vnc_client_message_type_tree);
break;
case VNC_CLIENT_MESSAGE_TYPE_POINTER_EVENT:
vnc_client_pointer_event(tvb, pinfo, offset,
vnc_client_message_type_tree);
break;
case VNC_CLIENT_MESSAGE_TYPE_CLIENT_CUT_TEXT :
vnc_client_cut_text(tvb, pinfo, offset,
vnc_client_message_type_tree);
break;
case VNC_CLIENT_MESSAGE_TYPE_MIRRORLINK :
vnc_mirrorlink(tvb, pinfo, offset,
vnc_client_message_type_tree);
break;
case VNC_CLIENT_MESSAGE_TYPE_ENABLE_CONTINUOUS_UPDATES :
col_append_sep_str(pinfo->cinfo, COL_INFO, "; ", "Client Enable Continuous Updates");
*offset += 9;
break;
case VNC_CLIENT_MESSAGE_TYPE_FENCE :
vnc_fence(tvb, pinfo, offset,
vnc_client_message_type_tree);
break;
default :
col_append_sep_fstr(pinfo->cinfo, COL_INFO, "; ",
"Unknown client message type (%u)",
message_type);
break;
}
}
static void
vnc_server_to_client(tvbuff_t *tvb, packet_info *pinfo, gint *offset,
proto_tree *tree)
{
gint start_offset;
guint8 message_type;
gint bytes_needed = 0;
proto_item *ti;
proto_tree *vnc_server_message_type_tree;
again:
start_offset = *offset;
message_type = tvb_get_guint8(tvb, *offset);
ti = proto_tree_add_item(tree, hf_vnc_server_message_type, tvb,
*offset, 1, ENC_BIG_ENDIAN);
vnc_server_message_type_tree =
proto_item_add_subtree(ti, ett_vnc_server_message_type);
*offset += 1;
switch(message_type) {
case VNC_SERVER_MESSAGE_TYPE_FRAMEBUFFER_UPDATE :
bytes_needed =
vnc_server_framebuffer_update(tvb, pinfo, offset,
vnc_server_message_type_tree);
break;
case VNC_SERVER_MESSAGE_TYPE_SET_COLORMAP_ENTRIES :
bytes_needed = vnc_server_set_colormap_entries(tvb, pinfo, offset, vnc_server_message_type_tree);
break;
case VNC_SERVER_MESSAGE_TYPE_RING_BELL :
vnc_server_ring_bell(tvb, pinfo, offset,
vnc_server_message_type_tree);
break;
case VNC_SERVER_MESSAGE_TYPE_CUT_TEXT :
bytes_needed = vnc_server_cut_text(tvb, pinfo, offset,
vnc_server_message_type_tree);
break;
case VNC_SERVER_MESSAGE_TYPE_MIRRORLINK :
bytes_needed = vnc_mirrorlink(tvb, pinfo, offset,
vnc_server_message_type_tree);
break;
case VNC_SERVER_MESSAGE_TYPE_END_CONTINUOUS_UPDATES :
col_append_sep_str(pinfo->cinfo, COL_INFO, "; ", "Server End Continuous Updates");
*offset += 1;
break;
case VNC_SERVER_MESSAGE_TYPE_FENCE :
bytes_needed = vnc_fence(tvb, pinfo, offset,
vnc_server_message_type_tree);
break;
default :
col_append_sep_str(pinfo->cinfo, COL_INFO, "; ",
"Unknown server message type");
*offset = tvb_reported_length(tvb); /* Swallow the rest of the segment */
break;
}
if(bytes_needed > 0 && vnc_preference_desegment && pinfo->can_desegment) {
proto_tree_add_expert(vnc_server_message_type_tree, pinfo, &ei_vnc_reassemble, tvb, start_offset, -1);
pinfo->desegment_offset = start_offset;
pinfo->desegment_len = DESEGMENT_ONE_MORE_SEGMENT;
return;
}
if ((unsigned)*offset < tvb_reported_length(tvb)) {
goto again;
}
}
static void
vnc_client_set_pixel_format(tvbuff_t *tvb, packet_info *pinfo, gint *offset,
proto_tree *tree)
{
col_set_str(pinfo->cinfo, COL_INFO, "Client set pixel format");
proto_tree_add_item(tree, hf_vnc_padding, tvb, *offset, 3, ENC_NA);
*offset += 3; /* Skip over 3 bytes of padding */
proto_tree_add_item(tree, hf_vnc_client_bits_per_pixel, tvb, *offset,
1, ENC_BIG_ENDIAN);
vnc_bytes_per_pixel = tvb_get_guint8(tvb, *offset)/8;
vnc_set_bytes_per_pixel(pinfo, vnc_bytes_per_pixel);
*offset += 1;
proto_tree_add_item(tree, hf_vnc_client_depth, tvb, *offset,
1, ENC_BIG_ENDIAN);
vnc_depth = tvb_get_guint8(tvb, *offset);
vnc_set_depth(pinfo, vnc_depth);
*offset += 1;
proto_tree_add_item(tree, hf_vnc_client_big_endian_flag, tvb, *offset,
1, ENC_BIG_ENDIAN);
*offset += 1;
proto_tree_add_item(tree, hf_vnc_client_true_color_flag, tvb, *offset,
1, ENC_BIG_ENDIAN);
*offset += 1;
proto_tree_add_item(tree, hf_vnc_client_red_max, tvb, *offset,
2, ENC_BIG_ENDIAN);
*offset += 2;
proto_tree_add_item(tree, hf_vnc_client_green_max, tvb, *offset,
2, ENC_BIG_ENDIAN);
*offset += 2;
proto_tree_add_item(tree, hf_vnc_client_blue_max, tvb, *offset,
2, ENC_BIG_ENDIAN);
*offset += 2;
proto_tree_add_item(tree, hf_vnc_client_red_shift, tvb, *offset,
1, ENC_BIG_ENDIAN);
*offset += 1;
proto_tree_add_item(tree, hf_vnc_client_green_shift, tvb, *offset,
1, ENC_BIG_ENDIAN);
*offset += 1;
proto_tree_add_item(tree, hf_vnc_client_blue_shift, tvb, *offset,
1, ENC_BIG_ENDIAN);
*offset += 1;
proto_tree_add_item(tree, hf_vnc_padding, tvb, *offset, 3, ENC_NA);
*offset += 3; /* Skip over 3 bytes of padding */
}
static void
vnc_client_set_encodings(tvbuff_t *tvb, packet_info *pinfo, gint *offset,
proto_tree *tree)
{
guint16 number_of_encodings;
guint counter;
vnc_packet_t *per_packet_info;
per_packet_info = (vnc_packet_t *)p_get_proto_data(wmem_file_scope(), pinfo, proto_vnc, 0);
/* Our calling function should have set the packet's proto data already */
DISSECTOR_ASSERT(per_packet_info != NULL);
col_set_str(pinfo->cinfo, COL_INFO, "Client set encodings");
proto_tree_add_item(tree, hf_vnc_padding, tvb, *offset, 1, ENC_NA);
*offset += 1; /* Skip over 1 byte of padding */
number_of_encodings = tvb_get_ntohs(tvb, *offset);
proto_tree_add_item(tree, hf_vnc_encoding_num, tvb, *offset, 2, ENC_BIG_ENDIAN);
*offset += 2;
per_packet_info->preferred_encoding = -1;
for(counter = 0; counter < number_of_encodings; counter++) {
proto_tree_add_item(tree,
hf_vnc_client_set_encodings_encoding_type,
tvb, *offset, 4, ENC_BIG_ENDIAN);
/* Remember the first real encoding as the preferred encoding,
* per xserver/hw/vnc/rfbserver.c:rfbProcessClientNormalMessage().
* Otherwise, use RAW as the preferred encoding.
*/
if (per_packet_info->preferred_encoding == -1) {
int encoding;
encoding = tvb_get_ntohl(tvb, *offset);
switch(encoding) {
case VNC_ENCODING_TYPE_RAW:
case VNC_ENCODING_TYPE_RRE:
case VNC_ENCODING_TYPE_CORRE:
case VNC_ENCODING_TYPE_HEXTILE:
case VNC_ENCODING_TYPE_ZLIB:
case VNC_ENCODING_TYPE_TIGHT:
per_packet_info->preferred_encoding = encoding;
break;
}
}
*offset += 4;
}
if (per_packet_info->preferred_encoding == -1)
per_packet_info->preferred_encoding = VNC_ENCODING_TYPE_RAW;
}
static void
vnc_client_framebuffer_update_request(tvbuff_t *tvb, packet_info *pinfo,
gint *offset, proto_tree *tree)
{
col_set_str(pinfo->cinfo, COL_INFO, "Client framebuffer update request");
proto_tree_add_item(tree, hf_vnc_update_req_incremental,
tvb, *offset, 1, ENC_BIG_ENDIAN);
*offset += 1;
proto_tree_add_item(tree, hf_vnc_update_req_x_pos,
tvb, *offset, 2, ENC_BIG_ENDIAN);
*offset += 2;
proto_tree_add_item(tree, hf_vnc_update_req_y_pos,
tvb, *offset, 2, ENC_BIG_ENDIAN);
*offset += 2;
proto_tree_add_item(tree, hf_vnc_update_req_width, tvb,
*offset, 2, ENC_BIG_ENDIAN);
*offset += 2;
proto_tree_add_item(tree, hf_vnc_update_req_height, tvb,
*offset, 2, ENC_BIG_ENDIAN);
*offset += 2;
}
static void
vnc_client_key_event(tvbuff_t *tvb, packet_info *pinfo, gint *offset,
proto_tree *tree)
{
col_set_str(pinfo->cinfo, COL_INFO, "Client key event");
proto_tree_add_item(tree, hf_vnc_key_down, tvb, *offset, 1, ENC_BIG_ENDIAN);
*offset += 1;
proto_tree_add_item(tree, hf_vnc_padding, tvb, *offset, 2, ENC_NA);
*offset += 2; /* Skip over 2 bytes of padding */
proto_tree_add_item(tree, hf_vnc_key, tvb, *offset, 4, ENC_BIG_ENDIAN);
*offset += 4;
}
static void
vnc_client_pointer_event(tvbuff_t *tvb, packet_info *pinfo, gint *offset,
proto_tree *tree)
{
col_set_str(pinfo->cinfo, COL_INFO, "Client pointer event");
proto_tree_add_item(tree, hf_vnc_button_1_pos, tvb, *offset, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(tree, hf_vnc_button_2_pos, tvb, *offset, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(tree, hf_vnc_button_3_pos, tvb, *offset, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(tree, hf_vnc_button_4_pos, tvb, *offset, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(tree, hf_vnc_button_5_pos, tvb, *offset, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(tree, hf_vnc_button_6_pos, tvb, *offset, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(tree, hf_vnc_button_7_pos, tvb, *offset, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(tree, hf_vnc_button_8_pos, tvb, *offset, 1, ENC_BIG_ENDIAN);
*offset += 1;
proto_tree_add_item(tree, hf_vnc_pointer_x_pos, tvb, *offset, 2, ENC_BIG_ENDIAN);
*offset += 2;
proto_tree_add_item(tree, hf_vnc_pointer_y_pos, tvb, *offset, 2, ENC_BIG_ENDIAN);
*offset += 2;
}
static void
vnc_client_cut_text(tvbuff_t *tvb, packet_info *pinfo, gint *offset,
proto_tree *tree)
{
guint32 text_len;
col_set_str(pinfo->cinfo, COL_INFO, "Client cut text");
proto_tree_add_item(tree, hf_vnc_padding, tvb, *offset, 3, ENC_NA);
*offset += 3; /* Skip over 3 bytes of padding */
text_len = tvb_get_ntohl(tvb, *offset);
proto_tree_add_item(tree, hf_vnc_client_cut_text_len, tvb, *offset, 4,
ENC_BIG_ENDIAN);
*offset += 4;
proto_tree_add_item(tree, hf_vnc_client_cut_text, tvb, *offset,
text_len, ENC_ASCII|ENC_NA);
*offset += text_len;
}
static guint
vnc_server_framebuffer_update(tvbuff_t *tvb, packet_info *pinfo, gint *offset,
proto_tree *tree)
{
guint ii;
guint num_rects;
guint16 width, height;
guint bytes_needed = 0;
guint32 encoding_type;
proto_item *ti, *ti_x, *ti_y, *ti_width, *ti_height;
proto_tree *vnc_rect_tree, *vnc_encoding_type_tree;
col_append_sep_str(pinfo->cinfo, COL_INFO, "; ", "Server framebuffer update");
proto_tree_add_item(tree, hf_vnc_padding, tvb, *offset, 1, ENC_NA);
*offset += 1;
num_rects = tvb_get_ntohs(tvb, *offset);
ti = proto_tree_add_item(tree, hf_vnc_rectangle_num, tvb, *offset, 2, ENC_BIG_ENDIAN);
/* In some cases, TIGHT encoding ignores the "number of rectangles" field; */
/* VNC_ENCODING_TYPE_LAST_RECT is used to indicate the end of the rectangle list. */
/* (It appears that TIGHT encoding uses 0xFFFF for the num_rects field when the */
/* field is not being used). For now: we'll assume that a value 0f 0xFFFF means */
/* that the field is not being used. */
if (num_rects == 0xFFFF) {
proto_item_append_text(ti, " [TIGHT encoding assumed (field is not used)]");
}
if ((num_rects != 0xFFFF) && (num_rects > 5000)) {
expert_add_info_format(pinfo, ti, &ei_vnc_too_many_rectangles,
"Too many rectangles (%d), aborting dissection", num_rects);
return(0);
}
*offset += 2;
for(ii = 0; ii < num_rects; ii++) {
if (ii > 5000) {
expert_add_info_format(pinfo, ti, &ei_vnc_too_many_rectangles,
"Too many rectangles (%d), aborting dissection", ii);
return(0);
}
VNC_BYTES_NEEDED(12);
vnc_rect_tree = proto_tree_add_subtree_format(tree, tvb, *offset, 12,
ett_vnc_rect, NULL, "Rectangle #%d", ii+1);
ti_x = proto_tree_add_item(vnc_rect_tree, hf_vnc_fb_update_x_pos,
tvb, *offset, 2, ENC_BIG_ENDIAN);
*offset += 2;
ti_y = proto_tree_add_item(vnc_rect_tree, hf_vnc_fb_update_y_pos,
tvb, *offset, 2, ENC_BIG_ENDIAN);
*offset += 2;
ti_width = proto_tree_add_item(vnc_rect_tree, hf_vnc_fb_update_width,
tvb, *offset, 2, ENC_BIG_ENDIAN);
width = tvb_get_ntohs(tvb, *offset);
*offset += 2;
ti_height = proto_tree_add_item(vnc_rect_tree, hf_vnc_fb_update_height,
tvb, *offset, 2, ENC_BIG_ENDIAN);
height = tvb_get_ntohs(tvb, *offset);
*offset += 2;
ti = proto_tree_add_item(vnc_rect_tree,
hf_vnc_fb_update_encoding_type,
tvb, *offset, 4, ENC_BIG_ENDIAN);
encoding_type = tvb_get_ntohl(tvb, *offset);
*offset += 4;
if (encoding_type == VNC_ENCODING_TYPE_LAST_RECT)
break; /* exit the loop */
vnc_encoding_type_tree =
proto_item_add_subtree(ti, ett_vnc_encoding_type);
switch(encoding_type) {
case VNC_ENCODING_TYPE_RAW:
bytes_needed = vnc_raw_encoding(tvb, pinfo, offset,
vnc_encoding_type_tree,
width, height);
break;
case VNC_ENCODING_TYPE_COPY_RECT:
bytes_needed =
vnc_copyrect_encoding(tvb, pinfo, offset,
vnc_encoding_type_tree,
width, height);
break;
case VNC_ENCODING_TYPE_RRE:
bytes_needed =
vnc_rre_encoding(tvb, pinfo, offset,
vnc_encoding_type_tree,
width, height);
break;
case VNC_ENCODING_TYPE_HEXTILE:
bytes_needed =
vnc_hextile_encoding(tvb, pinfo, offset,
vnc_encoding_type_tree,
width, height);
break;
case VNC_ENCODING_TYPE_RLE:
bytes_needed =
vnc_zrle_encoding(tvb, pinfo, offset,
vnc_encoding_type_tree,
width, height);
break;
case VNC_ENCODING_TYPE_TIGHT:
bytes_needed =
vnc_tight_encoding(tvb, pinfo, offset,
vnc_encoding_type_tree,
width, height);
break;
case VNC_ENCODING_TYPE_RICH_CURSOR:
case VNC_ENCODING_TYPE_X_CURSOR:
proto_item_append_text (ti_x, " (hotspot X)");
proto_item_append_text (ti_y, " (hotspot Y)");
proto_item_append_text (ti_width, " (cursor width)");
proto_item_append_text (ti_height, " (cursor height)");
if (encoding_type == VNC_ENCODING_TYPE_RICH_CURSOR)
bytes_needed = vnc_rich_cursor_encoding(tvb, pinfo, offset, vnc_encoding_type_tree, width, height);
else
bytes_needed = vnc_x_cursor_encoding(tvb, pinfo, offset, vnc_encoding_type_tree, width, height);
break;
case VNC_ENCODING_TYPE_POINTER_POS:
proto_item_append_text (ti_x, " (pointer X)");
proto_item_append_text (ti_y, " (pointer Y)");
proto_item_append_text (ti_width, " (unused)");
proto_item_append_text (ti_height, " (unused)");
bytes_needed = 0;
break;
case VNC_ENCODING_TYPE_DESKTOP_SIZE:
/* There is no payload for this message type */
bytes_needed = 0;
break;
case VNC_ENCODING_TYPE_EXTENDED_DESK_SIZE :
bytes_needed = vnc_extended_desktop_size(tvb, offset, vnc_encoding_type_tree);
break;
case VNC_ENCODING_TYPE_KEYBOARD_LED_STATE :
/* There is no payload for this message type */
bytes_needed = 0;
break;
case VNC_ENCODING_TYPE_SUPPORTED_MESSAGES :
bytes_needed = vnc_supported_messages(tvb, offset,
vnc_encoding_type_tree,
width);
break;
case VNC_ENCODING_TYPE_SUPPORTED_ENCODINGS :
bytes_needed = vnc_supported_encodings(tvb, offset,
vnc_encoding_type_tree,
width, height);
break;
case VNC_ENCODING_TYPE_SERVER_IDENTITY :
bytes_needed = vnc_server_identity(tvb, offset,
vnc_encoding_type_tree,
width);
break;
case VNC_ENCODING_TYPE_CONTEXT_INFORMATION :
bytes_needed = vnc_context_information(tvb, offset,
vnc_encoding_type_tree);
break;
case VNC_ENCODING_TYPE_SLRLE :
bytes_needed = vnc_slrle_encoding(tvb, pinfo, offset,
vnc_encoding_type_tree,
height);
break;
case VNC_ENCODING_TYPE_H264 :
bytes_needed = vnc_h264_encoding(tvb, offset,
vnc_encoding_type_tree);
break;
}
/* Check if the routines above requested more bytes to
* be desegmented. */
if(bytes_needed > 0)
return bytes_needed;
}
return 0;
}
static guint32
vnc_extended_desktop_size(tvbuff_t *tvb, gint *offset, proto_tree *tree)
{
guint8 i, num_of_screens;
proto_tree *screen_tree;
num_of_screens = tvb_get_guint8(tvb, *offset);
proto_tree_add_item(tree, hf_vnc_desktop_screen_num, tvb, *offset, 1, ENC_BIG_ENDIAN);
*offset += 1;
proto_tree_add_item(tree, hf_vnc_padding, tvb, *offset, 3, ENC_NA);
VNC_BYTES_NEEDED((guint32)(3 + (num_of_screens * 16)));
*offset += 3;
for(i = 0; i < num_of_screens; i++) {
screen_tree = proto_tree_add_subtree_format(tree, tvb, *offset, 16, ett_vnc_desktop_screen, NULL, "Screen #%u", i+1);
proto_tree_add_item(screen_tree, hf_vnc_desktop_screen_id, tvb, *offset, 4, ENC_BIG_ENDIAN);
*offset += 4;
proto_tree_add_item(screen_tree, hf_vnc_desktop_screen_x, tvb, *offset, 2, ENC_BIG_ENDIAN);
*offset += 2;
proto_tree_add_item(screen_tree, hf_vnc_desktop_screen_y, tvb, *offset, 2, ENC_BIG_ENDIAN);
*offset += 2;
proto_tree_add_item(screen_tree, hf_vnc_desktop_screen_width, tvb, *offset, 2, ENC_BIG_ENDIAN);
*offset += 2;
proto_tree_add_item(screen_tree, hf_vnc_desktop_screen_height, tvb, *offset, 2, ENC_BIG_ENDIAN);
*offset += 2;
proto_tree_add_item(screen_tree, hf_vnc_desktop_screen_flags, tvb, *offset, 4, ENC_BIG_ENDIAN);
*offset += 4;
}
return 0;
}
static guint
vnc_raw_encoding(tvbuff_t *tvb, packet_info *pinfo, gint *offset,
proto_tree *tree, const guint16 width, const guint16 height)
{
guint8 bytes_per_pixel = vnc_get_bytes_per_pixel(pinfo);
guint length;
length = width * height * bytes_per_pixel;
VNC_BYTES_NEEDED(length);
proto_tree_add_item(tree, hf_vnc_raw_pixel_data, tvb, *offset,
length, ENC_NA);
*offset += length;
return 0; /* bytes_needed */
}
static guint
vnc_copyrect_encoding(tvbuff_t *tvb, packet_info *pinfo _U_, gint *offset,
proto_tree *tree, const guint16 width _U_, const guint16 height _U_)
{
proto_tree_add_item(tree, hf_vnc_copyrect_src_x_pos, tvb, *offset,
2, ENC_BIG_ENDIAN);
*offset += 2;
proto_tree_add_item(tree, hf_vnc_copyrect_src_y_pos, tvb, *offset,
2, ENC_BIG_ENDIAN);
*offset += 2;
return 0; /* bytes_needed */
}
static guint
vnc_rre_encoding(tvbuff_t *tvb, packet_info *pinfo, gint *offset,
proto_tree *tree, const guint16 width _U_, const guint16 height _U_)
{
guint8 bytes_per_pixel = vnc_get_bytes_per_pixel(pinfo);
guint32 num_subrects, i;
guint bytes_needed;
proto_item *ti;
proto_tree *subrect_tree;
VNC_BYTES_NEEDED(4);
ti = proto_tree_add_item(tree, hf_vnc_rre_num_subrects, tvb, *offset,
4, ENC_BIG_ENDIAN);
num_subrects = tvb_get_ntohl(tvb, *offset);
*offset += 4;
if (num_subrects > 10000) {
expert_add_info_format(pinfo, ti, &ei_vnc_too_many_sub_rectangles,
"Too many sub-rectangles (%d), aborting dissection", num_subrects);
return(0);
}
*offset += 2;
VNC_BYTES_NEEDED(bytes_per_pixel);
proto_tree_add_item(tree, hf_vnc_rre_bg_pixel, tvb, *offset,
bytes_per_pixel, ENC_NA);
*offset += bytes_per_pixel;
/* We know we need (at least) all these bytes, so ask for them now
* (instead of a few at a time...).
*/
bytes_needed = bytes_per_pixel + 8;
VNC_BYTES_NEEDED(bytes_needed * num_subrects);
for(i = 0; i < num_subrects; i++) {
subrect_tree = proto_tree_add_subtree_format(tree, tvb, *offset, bytes_per_pixel +
8, ett_vnc_rre_subrect, NULL, "Subrectangle #%d", i+1);
proto_tree_add_item(subrect_tree, hf_vnc_rre_subrect_pixel,
tvb, *offset, bytes_per_pixel, ENC_NA);
*offset += bytes_per_pixel;
proto_tree_add_item(subrect_tree, hf_vnc_rre_subrect_x_pos,
tvb, *offset, 2, ENC_BIG_ENDIAN);
*offset += 2;
proto_tree_add_item(subrect_tree, hf_vnc_rre_subrect_y_pos,
tvb, *offset, 2, ENC_BIG_ENDIAN);
*offset += 2;
proto_tree_add_item(subrect_tree, hf_vnc_rre_subrect_width,
tvb, *offset, 2, ENC_BIG_ENDIAN);
*offset += 2;
proto_tree_add_item(subrect_tree, hf_vnc_rre_subrect_height,
tvb, *offset, 2, ENC_BIG_ENDIAN);
*offset += 2;
}
return 0; /* bytes_needed */
}
static guint
vnc_hextile_encoding(tvbuff_t *tvb, packet_info *pinfo, gint *offset,
proto_tree *tree, const guint16 width, const guint16 height)
{
guint8 bytes_per_pixel = vnc_get_bytes_per_pixel(pinfo);
guint8 i, subencoding_mask, num_subrects, subrect_len, tile_height, tile_width;
guint32 raw_length;
proto_tree *tile_tree, *subencoding_mask_tree, *subrect_tree, *num_subrects_tree;
proto_item *ti;
guint16 current_height = 0, current_width;
while(current_height != height) {
if (current_height + 16 > height)
tile_height = height - current_height;
else
tile_height = 16;
current_height += tile_height;
current_width = 0;
while(current_width != width) {
if (current_width + 16 > width)
tile_width = width - current_width;
else
tile_width = 16;
current_width += tile_width;
VNC_BYTES_NEEDED(1);
subencoding_mask = tvb_get_guint8(tvb, *offset);
tile_tree = proto_tree_add_subtree_format(tree, tvb, *offset, 1, ett_vnc_hextile_tile, NULL,
"Tile {%d:%d}, sub encoding mask %u", current_width, current_height, subencoding_mask);
ti = proto_tree_add_item(tile_tree, hf_vnc_hextile_subencoding_mask, tvb,
*offset, 1, ENC_BIG_ENDIAN);
subencoding_mask_tree =
proto_item_add_subtree(ti, ett_vnc_hextile_subencoding_mask);
proto_tree_add_item(subencoding_mask_tree,
hf_vnc_hextile_raw, tvb, *offset, 1,
ENC_BIG_ENDIAN);
proto_tree_add_item(subencoding_mask_tree,
hf_vnc_hextile_bg, tvb, *offset, 1,
ENC_BIG_ENDIAN);
proto_tree_add_item(subencoding_mask_tree,
hf_vnc_hextile_fg, tvb, *offset, 1,
ENC_BIG_ENDIAN);
proto_tree_add_item(subencoding_mask_tree,
hf_vnc_hextile_anysubrects, tvb, *offset, 1,
ENC_BIG_ENDIAN);
proto_tree_add_item(subencoding_mask_tree,
hf_vnc_hextile_subrectscolored, tvb, *offset, 1,
ENC_BIG_ENDIAN);
*offset += 1;
if(subencoding_mask & 0x1) { /* Raw */
raw_length = tile_width * tile_height * bytes_per_pixel;
proto_tree_add_item(tile_tree, hf_vnc_hextile_raw_value, tvb,
*offset, raw_length, ENC_NA);
VNC_BYTES_NEEDED(raw_length);
*offset += raw_length;
} else {
if(subencoding_mask & 0x2) { /* Background Specified */
VNC_BYTES_NEEDED(bytes_per_pixel);
proto_tree_add_item(tile_tree, hf_vnc_hextile_bg_value,
tvb, *offset, bytes_per_pixel,
ENC_NA);
*offset += bytes_per_pixel;
}
if(subencoding_mask & 0x4) { /* Foreground Specified */
VNC_BYTES_NEEDED(bytes_per_pixel);
proto_tree_add_item(tile_tree, hf_vnc_hextile_fg_value,
tvb, *offset, bytes_per_pixel,
ENC_NA);
*offset += bytes_per_pixel;
}
if(subencoding_mask & 0x8) { /* Any Subrects */
VNC_BYTES_NEEDED(3); /* 1 byte for number of subrects field, +2 at least for 1 subrect */
ti = proto_tree_add_item(tile_tree,
hf_vnc_hextile_num_subrects,
tvb, *offset, 1,
ENC_BIG_ENDIAN);
num_subrects = tvb_get_guint8(tvb, *offset);
*offset += 1;
if(subencoding_mask & 0x10)
subrect_len = bytes_per_pixel + 2;
else
subrect_len = 2;
VNC_BYTES_NEEDED((guint)(subrect_len * num_subrects));
num_subrects_tree =
proto_item_add_subtree(ti, ett_vnc_hextile_num_subrects);
for(i = 0; i < num_subrects; i++) {
subrect_tree = proto_tree_add_subtree_format(num_subrects_tree, tvb,
*offset, subrect_len, ett_vnc_hextile_subrect, NULL,
"Subrectangle #%d", i+1);
if(subencoding_mask & 0x10) {
/* Subrects Colored */
proto_tree_add_item(subrect_tree, hf_vnc_hextile_subrect_pixel_value, tvb, *offset, bytes_per_pixel, ENC_NA);
*offset += bytes_per_pixel;
}
proto_tree_add_item(subrect_tree,
hf_vnc_hextile_subrect_x_pos, tvb, *offset, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(subrect_tree, hf_vnc_hextile_subrect_y_pos, tvb, *offset, 1, ENC_BIG_ENDIAN);
*offset += 1;
proto_tree_add_item(subrect_tree, hf_vnc_hextile_subrect_width, tvb, *offset, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(subrect_tree, hf_vnc_hextile_subrect_height, tvb, *offset, 1, ENC_BIG_ENDIAN);
*offset += 1;
}
}
}
}
}
return 0; /* bytes_needed */
}
static guint
vnc_supported_messages(tvbuff_t *tvb, gint *offset, proto_tree *tree,
const guint16 width)
{
VNC_BYTES_NEEDED(width);
if (width >= 64) {
proto_tree_add_item(tree,
hf_vnc_supported_messages_client2server,
tvb, *offset, 32, ENC_NA);
*offset += 32;
proto_tree_add_item(tree,
hf_vnc_supported_messages_server2client,
tvb, *offset, 32, ENC_NA);
*offset += 32;
*offset += width - 64;
} else {
*offset += width;
}
return 0; /* bytes_needed */
}
static guint
vnc_supported_encodings(tvbuff_t *tvb, gint *offset, proto_tree *tree,
const guint16 width, const guint16 height)
{
guint16 i = width;
proto_tree_add_uint(tree, hf_vnc_num_supported_encodings, tvb, *offset, 0, height);
VNC_BYTES_NEEDED(width);
for (; i >= 4; i -= 4) {
proto_tree_add_item(tree, hf_vnc_supported_encodings,
tvb, *offset, 4, ENC_BIG_ENDIAN);
*offset += 4;
}
*offset += i;
return 0; /* bytes_needed */
}
static guint
vnc_server_identity(tvbuff_t *tvb, gint *offset, proto_tree *tree,
const guint16 width)
{
VNC_BYTES_NEEDED(width);
proto_tree_add_item(tree, hf_vnc_server_identity,
tvb, *offset, width, ENC_ASCII|ENC_NA);
*offset += width;
return 0; /* bytes_needed */
}
static guint
vnc_mirrorlink(tvbuff_t *tvb, packet_info *pinfo, gint *offset,
proto_tree *tree)
{
guint8 type;
guint16 length;
guint16 num, i;
gint end;
proto_tree *sub_tree;
/* Header */
VNC_BYTES_NEEDED(3);
type = tvb_get_guint8(tvb, *offset);
proto_tree_add_item(tree, hf_vnc_mirrorlink_type,
tvb, *offset, 1, ENC_BIG_ENDIAN);
*offset += 1;
length = tvb_get_ntohs(tvb, *offset);
proto_tree_add_item(tree, hf_vnc_mirrorlink_length,
tvb, *offset, 2, ENC_BIG_ENDIAN);
*offset += 2;
col_add_fstr(pinfo->cinfo, COL_INFO, "MirrorLink (%s)",
val_to_str_const(type, vnc_mirrorlink_types_vs,
"Unknown"));
/* Payload */
end = *offset + length;
switch(type) {
case VNC_ML_EXT_BYE_BYE :
break;
case VNC_ML_EXT_SERVER_DISPLAY_CONFIGURATION :
VNC_BYTES_NEEDED(12);
proto_tree_add_item(tree, hf_vnc_mirrorlink_version_major,
tvb, *offset, 1, ENC_BIG_ENDIAN);
*offset += 1;
proto_tree_add_item(tree, hf_vnc_mirrorlink_version_minor,
tvb, *offset, 1, ENC_BIG_ENDIAN);
*offset += 1;
proto_tree_add_item(tree,
hf_vnc_mirrorlink_framebuffer_configuration,
tvb, *offset, 2, ENC_BIG_ENDIAN);
*offset += 2;
proto_tree_add_item(tree, hf_vnc_mirrorlink_pixel_width,
tvb, *offset, 2, ENC_BIG_ENDIAN);
*offset += 2;
proto_tree_add_item(tree, hf_vnc_mirrorlink_pixel_height,
tvb, *offset, 2, ENC_BIG_ENDIAN);
*offset += 2;
proto_tree_add_item(tree, hf_vnc_mirrorlink_pixel_format,
tvb, *offset, 4, ENC_BIG_ENDIAN);
*offset += 4;
break;
case VNC_ML_EXT_CLIENT_DISPLAY_CONFIGURATION :
VNC_BYTES_NEEDED(14);
proto_tree_add_item(tree, hf_vnc_mirrorlink_version_major,
tvb, *offset, 1, ENC_BIG_ENDIAN);
*offset += 1;
proto_tree_add_item(tree, hf_vnc_mirrorlink_version_minor,
tvb, *offset, 1, ENC_BIG_ENDIAN);
*offset += 1;
proto_tree_add_item(tree,
hf_vnc_mirrorlink_framebuffer_configuration,
tvb, *offset, 2, ENC_BIG_ENDIAN);
*offset += 2;
proto_tree_add_item(tree, hf_vnc_mirrorlink_pixel_width,
tvb, *offset, 2, ENC_BIG_ENDIAN);
*offset += 2;
proto_tree_add_item(tree, hf_vnc_mirrorlink_pixel_height,
tvb, *offset, 2, ENC_BIG_ENDIAN);
*offset += 2;
proto_tree_add_item(tree, hf_vnc_mirrorlink_display_width,
tvb, *offset, 2, ENC_BIG_ENDIAN);
*offset += 2;
proto_tree_add_item(tree, hf_vnc_mirrorlink_display_height,
tvb, *offset, 2, ENC_BIG_ENDIAN);
*offset += 2;
proto_tree_add_item(tree, hf_vnc_mirrorlink_display_distance,
tvb, *offset, 2, ENC_BIG_ENDIAN);
*offset += 2;
break;
case VNC_ML_EXT_SERVER_EVENT_CONFIGURATION :
case VNC_ML_EXT_CLIENT_EVENT_CONFIGURATION :
VNC_BYTES_NEEDED(28);
proto_tree_add_item(tree, hf_vnc_mirrorlink_keyboard_language,
tvb, *offset, 2, ENC_ASCII|ENC_NA);
*offset += 2;
proto_tree_add_item(tree, hf_vnc_mirrorlink_keyboard_country,
tvb, *offset, 2, ENC_ASCII|ENC_NA);
*offset += 2;
proto_tree_add_item(tree, hf_vnc_mirrorlink_ui_language,
tvb, *offset, 2, ENC_ASCII|ENC_NA);
*offset += 2;
proto_tree_add_item(tree, hf_vnc_mirrorlink_ui_country,
tvb, *offset, 2, ENC_ASCII|ENC_NA);
*offset += 2;
proto_tree_add_item(tree, hf_vnc_mirrorlink_knob_keys,
tvb, *offset, 4, ENC_BIG_ENDIAN);
*offset += 4;
proto_tree_add_item(tree, hf_vnc_mirrorlink_device_keys,
tvb, *offset, 4, ENC_BIG_ENDIAN);
*offset += 4;
proto_tree_add_item(tree, hf_vnc_mirrorlink_multimedia_keys,
tvb, *offset, 4, ENC_BIG_ENDIAN);
*offset += 4;
proto_tree_add_item(tree, hf_vnc_mirrorlink_key_related,
tvb, *offset, 4, ENC_BIG_ENDIAN);
*offset += 4;
proto_tree_add_item(tree, hf_vnc_mirrorlink_pointer_related,
tvb, *offset, 4, ENC_BIG_ENDIAN);
*offset += 4;
break;
case VNC_ML_EXT_EVENT_MAPPING :
case VNC_ML_EXT_EVENT_MAPPING_REQUEST :
VNC_BYTES_NEEDED(8);
proto_tree_add_item(tree,
hf_vnc_mirrorlink_key_symbol_value_client,
tvb, *offset, 4, ENC_BIG_ENDIAN);
*offset += 4;
proto_tree_add_item(tree,
hf_vnc_mirrorlink_key_symbol_value_server,
tvb, *offset, 4, ENC_BIG_ENDIAN);
*offset += 4;
break;
case VNC_ML_EXT_KEY_EVENT_LISTING :
VNC_BYTES_NEEDED(4);
proto_tree_add_item(tree, hf_vnc_mirrorlink_key_configuration,
tvb, *offset, 1, ENC_BIG_ENDIAN);
*offset += 1;
num = tvb_get_guint8(tvb, *offset);
proto_tree_add_item(tree, hf_vnc_mirrorlink_key_num_events,
tvb, *offset, 1, ENC_BIG_ENDIAN);
*offset += 1;
proto_tree_add_item(tree, hf_vnc_mirrorlink_key_event_counter,
tvb, *offset, 2, ENC_BIG_ENDIAN);
*offset += 2;
VNC_BYTES_NEEDED((guint)(4 * num));
sub_tree = proto_tree_add_subtree(tree, tvb, *offset, 4 * num,
ett_vnc_key_events, NULL, "Key Event List");
for (; num > 0; num--) {
proto_tree_add_item(sub_tree,
hf_vnc_mirrorlink_key_symbol_value,
tvb, *offset, 4, ENC_BIG_ENDIAN);
*offset += 4 ;
}
break;
case VNC_ML_EXT_KEY_EVENT_LISTING_REQUEST :
VNC_BYTES_NEEDED(4);
proto_tree_add_item(tree,
hf_vnc_mirrorlink_key_request_configuration,
tvb, *offset, 4, ENC_BIG_ENDIAN);
*offset += 4;
break;
case VNC_ML_EXT_VIRTUAL_KEYBOARD :
VNC_BYTES_NEEDED(16);
proto_tree_add_item(tree,
hf_vnc_mirrorlink_keyboard_configuration,
tvb, *offset, 4, ENC_BIG_ENDIAN);
*offset += 4;
proto_tree_add_item(tree, hf_vnc_mirrorlink_cursor_x,
tvb, *offset, 2, ENC_BIG_ENDIAN);
*offset += 2;
proto_tree_add_item(tree, hf_vnc_mirrorlink_cursor_y,
tvb, *offset, 2, ENC_BIG_ENDIAN);
*offset += 2;
proto_tree_add_item(tree, hf_vnc_mirrorlink_text_x,
tvb, *offset, 2, ENC_BIG_ENDIAN);
*offset += 2;
proto_tree_add_item(tree, hf_vnc_mirrorlink_text_y,
tvb, *offset, 2, ENC_BIG_ENDIAN);
*offset += 2;
proto_tree_add_item(tree, hf_vnc_mirrorlink_text_width,
tvb, *offset, 2, ENC_BIG_ENDIAN);
*offset += 2;
proto_tree_add_item(tree, hf_vnc_mirrorlink_text_height,
tvb, *offset, 2, ENC_BIG_ENDIAN);
*offset += 2;
break;
case VNC_ML_EXT_VIRTUAL_KEYBOARD_REQUEST :
VNC_BYTES_NEEDED(4);
proto_tree_add_item(tree,
hf_vnc_mirrorlink_keyboard_request_configuration,
tvb, *offset, 4, ENC_BIG_ENDIAN);
*offset += 4;
break;
case VNC_ML_EXT_DEVICE_STATUS :
case VNC_ML_EXT_DEVICE_STATUS_REQUEST :
VNC_BYTES_NEEDED(4);
proto_tree_add_item(tree, hf_vnc_mirrorlink_device_status,
tvb, *offset, 4, ENC_BIG_ENDIAN);
*offset += 4;
break;
/*
case VNC_ML_EXT_CONTENT_ATTESTATION :
break;
case VNC_ML_EXT_CONTENT_ATTESTATION_REQUEST :
break;
*/
case VNC_ML_EXT_FB_BLOCKING_NOTIFICATION :
VNC_BYTES_NEEDED(14);
proto_tree_add_item(tree, hf_vnc_mirrorlink_fb_block_x,
tvb, *offset, 2, ENC_BIG_ENDIAN);
*offset += 2;
proto_tree_add_item(tree, hf_vnc_mirrorlink_fb_block_y,
tvb, *offset, 2, ENC_BIG_ENDIAN);
*offset += 2;
proto_tree_add_item(tree, hf_vnc_mirrorlink_fb_block_width,
tvb, *offset, 2, ENC_BIG_ENDIAN);
*offset += 2;
proto_tree_add_item(tree, hf_vnc_mirrorlink_fb_block_height,
tvb, *offset, 2, ENC_BIG_ENDIAN);
*offset += 2;
proto_tree_add_item(tree, hf_vnc_mirrorlink_app_id,
tvb, *offset, 4, ENC_BIG_ENDIAN);
*offset += 4;
proto_tree_add_item(tree, hf_vnc_mirrorlink_fb_block_reason,
tvb, *offset, 2, ENC_BIG_ENDIAN);
*offset += 2;
break;
case VNC_ML_EXT_AUDIO_BLOCKING_NOTIFICATION :
VNC_BYTES_NEEDED(6);
proto_tree_add_item(tree, hf_vnc_mirrorlink_app_id,
tvb, *offset, 4, ENC_BIG_ENDIAN);
*offset += 4;
proto_tree_add_item(tree, hf_vnc_mirrorlink_audio_block_reason,
tvb, *offset, 2, ENC_BIG_ENDIAN);
*offset += 2;
break;
case VNC_ML_EXT_TOUCH_EVENT :
VNC_BYTES_NEEDED(1);
num = tvb_get_guint8(tvb, *offset);
proto_tree_add_item(tree, hf_vnc_mirrorlink_touch_num_events,
tvb, *offset, 1, ENC_BIG_ENDIAN);
*offset += 1;
VNC_BYTES_NEEDED((guint)(6 * num));
/*sub_tree = proto_item_add_subtree(tree, ett_vnc_touch_events);*/
for (i = 0; i < num; i++) {
sub_tree = proto_tree_add_subtree_format(tree, tvb, *offset, 6,
ett_vnc_touch_events, NULL, "Touch Event #%d", i + 1);
proto_tree_add_item(sub_tree, hf_vnc_mirrorlink_touch_x,
tvb, *offset, 2, ENC_BIG_ENDIAN);
*offset += 2;
proto_tree_add_item(sub_tree, hf_vnc_mirrorlink_touch_y,
tvb, *offset, 2, ENC_BIG_ENDIAN);
*offset += 2;
proto_tree_add_item(sub_tree,
hf_vnc_mirrorlink_touch_id,
tvb, *offset, 1, ENC_BIG_ENDIAN);
*offset += 1;
proto_tree_add_item(sub_tree,
hf_vnc_mirrorlink_touch_pressure,
tvb, *offset, 1, ENC_BIG_ENDIAN);
*offset += 1;
}
break;
case VNC_ML_EXT_FB_ALTERNATIVE_TEXT :
VNC_BYTES_NEEDED(6);
proto_tree_add_item(tree, hf_vnc_mirrorlink_app_id,
tvb, *offset, 4, ENC_BIG_ENDIAN);
*offset += 4;
num = tvb_get_ntohs(tvb, *offset);
proto_tree_add_item(tree, hf_vnc_mirrorlink_text_length,
tvb, *offset, 2, ENC_BIG_ENDIAN);
*offset += 2;
VNC_BYTES_NEEDED(num);
proto_tree_add_item(tree, hf_vnc_mirrorlink_text,
tvb, *offset, num, ENC_ASCII|ENC_NA);
*offset += num;
break;
case VNC_ML_EXT_FB_ALTERNATIVE_TEXT_REQUEST :
VNC_BYTES_NEEDED(2);
proto_tree_add_item(tree, hf_vnc_mirrorlink_text_max_length,
tvb, *offset, 2, ENC_BIG_ENDIAN);
*offset += 2;
break;
}
if (end > *offset) {
length = end - *offset;
VNC_BYTES_NEEDED(length);
proto_tree_add_item(tree, hf_vnc_mirrorlink_unknown,
tvb, *offset, length, ENC_NA);
*offset = end;
}
return 0; /* bytes_needed */
}
static guint
vnc_fence(tvbuff_t *tvb, packet_info *pinfo, gint *offset,
proto_tree *tree)
{
guint payload_length;
VNC_BYTES_NEEDED(8);
payload_length = tvb_get_guint8(tvb, *offset+7);
VNC_BYTES_NEEDED((8+payload_length));
col_append_sep_str(pinfo->cinfo, COL_INFO, "; ", "Fence");
proto_tree_add_item(tree, hf_vnc_padding, tvb, *offset, 3, ENC_NA);
*offset += 3; /* skip padding */
proto_tree_add_bitmask(tree, tvb, *offset, hf_vnc_fence_flags,
ett_vnc_fence_flags, vnc_fence_flags, ENC_BIG_ENDIAN);
*offset += 4;
proto_tree_add_item(tree, hf_vnc_fence_payload_length,
tvb, *offset, 1, ENC_BIG_ENDIAN);
*offset += 1;
if (payload_length > 0) {
proto_tree_add_item(tree, hf_vnc_fence_payload,
tvb, *offset, payload_length, ENC_NA);
*offset += payload_length;
}
return 0;
}
static guint
vnc_context_information(tvbuff_t *tvb, gint *offset, proto_tree *tree)
{
VNC_BYTES_NEEDED(20);
proto_tree_add_item(tree, hf_vnc_context_information_app_id,
tvb, *offset, 4, ENC_BIG_ENDIAN);
*offset += 4;
proto_tree_add_item(tree, hf_vnc_context_information_app_trust_level,
tvb, *offset, 2, ENC_BIG_ENDIAN);
*offset += 2;
proto_tree_add_item(tree,
hf_vnc_context_information_content_trust_level,
tvb, *offset, 2, ENC_BIG_ENDIAN);
*offset += 2;
proto_tree_add_item(tree, hf_vnc_context_information_app_category,
tvb, *offset, 4, ENC_BIG_ENDIAN);
*offset += 4;
proto_tree_add_item(tree, hf_vnc_context_information_content_category,
tvb, *offset, 4, ENC_BIG_ENDIAN);
*offset += 4;
proto_tree_add_item(tree, hf_vnc_context_information_content_rules,
tvb, *offset, 4, ENC_BIG_ENDIAN);
*offset += 4;
return 0; /* bytes_needed */
}
static guint
vnc_slrle_encoding(tvbuff_t *tvb, packet_info *pinfo, gint *offset,
proto_tree *tree, const guint16 height)
{
guint8 depth = vnc_get_depth(pinfo);
guint8 depth_mod = depth % 8;
guint8 bytes_per_run;
guint16 num_runs, i;
guint length;
proto_tree *sub_tree;
if (depth_mod <= 4)
bytes_per_run = ( 8 - depth_mod + depth) / 8;
else
bytes_per_run = (16 - depth_mod + depth) / 8;
for (i = 0; i < height; i++) {
VNC_BYTES_NEEDED(2);
num_runs = tvb_get_ntohs(tvb, *offset);
length = num_runs * bytes_per_run;
sub_tree = proto_tree_add_subtree_format(tree, tvb, *offset, 2 + length,
ett_vnc_slrle_subline, NULL, "Scanline #%d", i+1);
proto_tree_add_item(sub_tree, hf_vnc_slrle_run_num,
tvb, *offset, 2, ENC_BIG_ENDIAN);
*offset += 2;
VNC_BYTES_NEEDED(length);
proto_tree_add_item(sub_tree, hf_vnc_slrle_run_data,
tvb, *offset, length, ENC_NA);
*offset += length;
}
return 0; /* bytes_needed */
}
static guint
vnc_h264_encoding(tvbuff_t *tvb, gint *offset, proto_tree *tree)
{
guint32 nbytes;
VNC_BYTES_NEEDED(16);
/*0 == P-Frame; 1 == B-Frame; 2 == I-Frame*/
proto_tree_add_item(tree, hf_vnc_h264_slice_type,
tvb, *offset, 4, ENC_BIG_ENDIAN);
*offset += 4;
nbytes = tvb_get_ntohl(tvb, *offset);
proto_tree_add_item(tree, hf_vnc_h264_nbytes,
tvb, *offset, 4, ENC_BIG_ENDIAN);
*offset += 4;
proto_tree_add_item(tree, hf_vnc_h264_width,
tvb, *offset, 4, ENC_BIG_ENDIAN);
*offset += 4;
proto_tree_add_item(tree, hf_vnc_h264_height,
tvb, *offset, 4, ENC_BIG_ENDIAN);
*offset += 4;
VNC_BYTES_NEEDED(nbytes);
proto_tree_add_item(tree, hf_vnc_h264_data,
tvb, *offset, nbytes, ENC_NA);
*offset += nbytes;
return 0; /* bytes_needed */
}
#ifdef HAVE_ZLIB
static guint
vnc_zrle_encoding(tvbuff_t *tvb, packet_info *pinfo, gint *offset,
proto_tree *tree, const guint16 width, const guint16 height)
#else
static guint
vnc_zrle_encoding(tvbuff_t *tvb, packet_info *pinfo _U_, gint *offset,
proto_tree *tree, const guint16 width _U_, const guint16 height _U_)
#endif
{
guint32 data_len;
#ifdef HAVE_ZLIB
guint8 palette_size;
guint8 bytes_per_cpixel = vnc_get_bytes_per_pixel(pinfo);
gint uncomp_offset = 0;
guint length;
gint subencoding_type;
tvbuff_t *uncomp_tvb;
proto_tree *zrle_subencoding_tree;
proto_item *ti;
#endif
VNC_BYTES_NEEDED(4);
proto_tree_add_item(tree, hf_vnc_zrle_len, tvb, *offset,
4, ENC_BIG_ENDIAN);
data_len = tvb_get_ntohl(tvb, *offset);
*offset += 4;
VNC_BYTES_NEEDED(data_len);
proto_tree_add_item(tree, hf_vnc_zrle_data, tvb, *offset,
data_len, ENC_NA);
#ifdef HAVE_ZLIB
uncomp_tvb = tvb_child_uncompress(tvb, tvb, *offset, data_len);
if(uncomp_tvb != NULL) {
add_new_data_source(pinfo, uncomp_tvb,
"Uncompressed ZRLE data");
ti = proto_tree_add_item(tree, hf_vnc_zrle_subencoding,
uncomp_tvb, uncomp_offset, 1, ENC_BIG_ENDIAN);
zrle_subencoding_tree =
proto_item_add_subtree(ti, ett_vnc_zrle_subencoding);
proto_tree_add_item(zrle_subencoding_tree, hf_vnc_zrle_rle,
uncomp_tvb, uncomp_offset, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(zrle_subencoding_tree,
hf_vnc_zrle_palette_size, uncomp_tvb,
uncomp_offset, 1, ENC_BIG_ENDIAN);
subencoding_type = tvb_get_guint8(uncomp_tvb, uncomp_offset);
palette_size = subencoding_type & 0x7F;
uncomp_offset += 1;
if(subencoding_type == 0) { /* Raw */
length = width * height * bytes_per_cpixel;
VNC_BYTES_NEEDED(length);
/* XXX - not working yet! */
proto_tree_add_item(zrle_subencoding_tree,
hf_vnc_zrle_raw, uncomp_tvb,
uncomp_offset, length, ENC_NA);
} else if(subencoding_type >= 130 && subencoding_type <= 255) {
length = palette_size * bytes_per_cpixel;
VNC_BYTES_NEEDED(length);
proto_tree_add_item(zrle_subencoding_tree,
hf_vnc_zrle_palette, uncomp_tvb,
uncomp_offset, length, ENC_NA);
/* XXX - Not complete! */
}
} else {
proto_tree_add_expert(tree, pinfo, &ei_vnc_zrle_failed, tvb, *offset, data_len);
}
#endif /* HAVE_ZLIB */
*offset += data_len;
return 0; /* bytes_needed */
}
static guint
read_compact_len(tvbuff_t *tvb, gint *offset, gint *length, gint *value_length)
{
gint b;
VNC_BYTES_NEEDED(1);
*value_length = 0;
b = tvb_get_guint8(tvb, *offset);
*offset += 1;
*value_length += 1;
*length = b & 0x7f;
if ((b & 0x80) != 0) {
VNC_BYTES_NEEDED(1);
b = tvb_get_guint8(tvb, *offset);
*offset += 1;
*value_length += 1;
*length |= (b & 0x7f) << 7;
if ((b & 0x80) != 0) {
VNC_BYTES_NEEDED (1);
b = tvb_get_guint8(tvb, *offset);
*offset += 1;
*value_length += 1;
*length |= (b & 0xff) << 14;
}
}
return 0;
}
static guint
process_compact_length_and_image_data(tvbuff_t *tvb, gint *offset, proto_tree *tree)
{
guint bytes_needed;
guint length, value_length;
bytes_needed = read_compact_len (tvb, offset, &length, &value_length);
if (bytes_needed != 0)
return bytes_needed;
proto_tree_add_uint(tree, hf_vnc_tight_image_len, tvb, *offset - value_length, value_length, length);
VNC_BYTES_NEEDED(length);
proto_tree_add_item(tree, hf_vnc_tight_image_data, tvb, *offset, length, ENC_NA);
*offset += length;
return 0; /* bytes_needed */
}
static guint
process_tight_rect_filter_palette(tvbuff_t *tvb, packet_info *pinfo, gint *offset,
proto_tree *tree, gint *bits_per_pixel)
{
vnc_packet_t *per_packet_info;
gint num_colors;
guint palette_bytes;
/* See TightVNC's vnc_unixsrc/vncviewer/tight.c:InitFilterPaletteBPP() */
per_packet_info = (vnc_packet_t *)p_get_proto_data(wmem_file_scope(), pinfo, proto_vnc, 0);
/* Our calling function should have set the packet's proto data already */
DISSECTOR_ASSERT(per_packet_info != NULL);
VNC_BYTES_NEEDED(1);
proto_tree_add_item(tree, hf_vnc_tight_palette_num_colors, tvb, *offset, 1, ENC_BIG_ENDIAN);
num_colors = tvb_get_guint8(tvb, *offset);
*offset += 1;
num_colors++;
if (num_colors < 2)
return 0;
if (per_packet_info->depth == 24)
palette_bytes = num_colors * 3;
else
palette_bytes = num_colors * per_packet_info->depth / 8;
VNC_BYTES_NEEDED(palette_bytes);
proto_tree_add_item(tree, hf_vnc_tight_palette_data, tvb, *offset, palette_bytes, ENC_NA);
*offset += palette_bytes;
/* This is the number of bits per pixel *in the image data*, not the actual client depth */
if (num_colors == 2)
*bits_per_pixel = 1;
else
*bits_per_pixel = 8;
return 0;
}
static guint
vnc_tight_encoding(tvbuff_t *tvb, packet_info *pinfo, gint *offset,
proto_tree *tree, const guint16 width _U_, const guint16 height _U_)
{
vnc_packet_t *per_packet_info;
guint8 comp_ctl;
proto_item *compression_type_ti;
gint bit_offset;
gint bytes_needed = -1;
per_packet_info = (vnc_packet_t *)p_get_proto_data(wmem_file_scope(), pinfo, proto_vnc, 0);
/* Our calling function should have set the packet's proto data already */
DISSECTOR_ASSERT(per_packet_info != NULL);
/* See xserver/hw/vnc/rfbproto.h and grep for "Tight Encoding." for the following layout */
VNC_BYTES_NEEDED(1);
/* least significant bits 0-3 are "reset compression stream N" */
bit_offset = *offset * 8;
proto_tree_add_bits_item(tree, hf_vnc_tight_reset_stream0, tvb, bit_offset + 7, 1, ENC_BIG_ENDIAN);
proto_tree_add_bits_item(tree, hf_vnc_tight_reset_stream1, tvb, bit_offset + 6, 1, ENC_BIG_ENDIAN);
proto_tree_add_bits_item(tree, hf_vnc_tight_reset_stream2, tvb, bit_offset + 5, 1, ENC_BIG_ENDIAN);
proto_tree_add_bits_item(tree, hf_vnc_tight_reset_stream3, tvb, bit_offset + 4, 1, ENC_BIG_ENDIAN);
/* most significant bits 4-7 are "compression type" */
compression_type_ti = proto_tree_add_bits_item(tree, hf_vnc_tight_rect_type, tvb, bit_offset + 0, 4, ENC_BIG_ENDIAN);
comp_ctl = tvb_get_guint8(tvb, *offset);
*offset += 1;
comp_ctl >>= 4; /* skip over the "reset compression" bits from above */
/* compression format */
if (comp_ctl == TIGHT_RECT_FILL) {
/* "fill" encoding (solid rectangle) */
proto_item_append_text(compression_type_ti, " (fill encoding - solid rectangle)");
if (per_packet_info->depth == 24) {
VNC_BYTES_NEEDED(3);
proto_tree_add_item(tree, hf_vnc_tight_fill_color, tvb, *offset, 3, ENC_NA);
*offset += 3;
} else {
VNC_BYTES_NEEDED(per_packet_info->bytes_per_pixel);
proto_tree_add_item(tree, hf_vnc_tight_fill_color, tvb, *offset, per_packet_info->bytes_per_pixel, ENC_NA);
*offset += per_packet_info->bytes_per_pixel;
}
bytes_needed = 0;
} else if (comp_ctl == TIGHT_RECT_JPEG) {
/* jpeg encoding */
proto_item_append_text(compression_type_ti, " (JPEG encoding)");
bytes_needed = process_compact_length_and_image_data(tvb, offset, tree);
if (bytes_needed != 0)
return bytes_needed;
} else if (comp_ctl > TIGHT_RECT_MAX_VALUE) {
/* invalid encoding */
expert_add_info(pinfo, compression_type_ti, &ei_vnc_invalid_encoding);
} else {
guint row_size;
gint bits_per_pixel;
/* basic encoding */
proto_item_append_text(compression_type_ti, " (basic encoding)");
proto_tree_add_bits_item(tree, hf_vnc_tight_filter_flag, tvb, bit_offset + 1, 1, ENC_BIG_ENDIAN);
bits_per_pixel = per_packet_info->depth;
if ((comp_ctl & TIGHT_RECT_EXPLICIT_FILTER_FLAG) != 0) {
guint8 filter_id;
/* explicit filter */
VNC_BYTES_NEEDED(1);
proto_tree_add_item(tree, hf_vnc_tight_filter_id, tvb, *offset, 1, ENC_BIG_ENDIAN);
filter_id = tvb_get_guint8(tvb, *offset);
*offset += 1;
switch (filter_id) {
case TIGHT_RECT_FILTER_COPY:
/* nothing to do */
break;
case TIGHT_RECT_FILTER_PALETTE:
bytes_needed = process_tight_rect_filter_palette(tvb, pinfo, offset, tree, &bits_per_pixel);
if (bytes_needed != 0)
return bytes_needed;
break;
case TIGHT_RECT_FILTER_GRADIENT:
/* nothing to do */
break;
}
} else {
/* this is the same case as TIGHT_RECT_FILTER_COPY, so there's nothing special to do */
}
row_size = ((guint) width * bits_per_pixel + 7) / 8;
if (row_size * height < TIGHT_MIN_BYTES_TO_COMPRESS) {
guint num_bytes;
/* The data is not compressed; just skip over it */
num_bytes = row_size * height;
VNC_BYTES_NEEDED(num_bytes);
proto_tree_add_item(tree, hf_vnc_tight_image_data, tvb, *offset, num_bytes, ENC_NA);
*offset += num_bytes;
bytes_needed = 0;
} else {
/* The data is compressed; read its length and data */
bytes_needed = process_compact_length_and_image_data(tvb, offset, tree);
if (bytes_needed != 0)
return bytes_needed;
}
}
DISSECTOR_ASSERT(bytes_needed != -1);
return bytes_needed;
}
static guint
decode_cursor(tvbuff_t *tvb, gint *offset, proto_tree *tree,
guint pixels_bytes, guint mask_bytes)
{
guint total_bytes;
total_bytes = pixels_bytes + mask_bytes;
VNC_BYTES_NEEDED (total_bytes);
proto_tree_add_item(tree, hf_vnc_cursor_encoding_pixels, tvb, *offset,
pixels_bytes, ENC_NA);
*offset += pixels_bytes;
proto_tree_add_item(tree, hf_vnc_cursor_encoding_bitmask, tvb, *offset,
mask_bytes, ENC_NA);
*offset += mask_bytes;
return 0; /* bytes_needed */
}
static guint
vnc_rich_cursor_encoding(tvbuff_t *tvb, packet_info *pinfo, gint *offset,
proto_tree *tree, const guint16 width, const guint16 height)
{
guint8 bytes_per_pixel = vnc_get_bytes_per_pixel(pinfo);
guint pixels_bytes, mask_bytes;
pixels_bytes = width * height * bytes_per_pixel;
mask_bytes = ((width + 7) / 8) * height;
return decode_cursor(tvb, offset, tree,
pixels_bytes, mask_bytes);
}
static guint
vnc_x_cursor_encoding(tvbuff_t *tvb, packet_info *pinfo _U_, gint *offset,
proto_tree *tree, const guint16 width, const guint16 height)
{
gint bitmap_row_bytes = (width + 7) / 8;
gint mask_bytes = bitmap_row_bytes * height;
VNC_BYTES_NEEDED (6);
proto_tree_add_item(tree, hf_vnc_cursor_x_fore_back, tvb, *offset, 6, ENC_NA);
*offset += 6;
/* The length of the pixel data is the same as the length of the mask data (X cursors are strictly black/white) */
return decode_cursor(tvb, offset, tree,
mask_bytes, mask_bytes);
}
static guint
vnc_server_set_colormap_entries(tvbuff_t *tvb, packet_info *pinfo, gint *offset,
proto_tree *tree)
{
guint16 number_of_colors;
guint counter, bytes_needed;
proto_item *ti;
proto_tree *vnc_colormap_num_groups, *vnc_colormap_color_group;
col_append_sep_str(pinfo->cinfo, COL_INFO, "; ", "Server set colormap entries");
number_of_colors = tvb_get_ntohs(tvb, 4);
VNC_BYTES_NEEDED(3);
proto_tree_add_item(tree, hf_vnc_padding, tvb, *offset, 1, ENC_NA);
*offset += 1; /* Skip over 1 byte of padding */
proto_tree_add_item(tree, hf_vnc_colormap_first_color,
tvb, *offset, 2, ENC_BIG_ENDIAN);
*offset += 2;
/* XXX - this is 3 bytes into the tvb, but number_of_colors is set off
* of 4 bytes in... Bug???
*/
ti = proto_tree_add_item(tree, hf_vnc_colormap_num_colors, tvb,
*offset, 2, ENC_BIG_ENDIAN);
if (number_of_colors > 10000) {
expert_add_info_format(pinfo, ti, &ei_vnc_too_many_colors,"Too many colors (%d), aborting dissection",
number_of_colors);
return(0);
}
bytes_needed = (number_of_colors * 6) + 5;
VNC_BYTES_NEEDED(bytes_needed);
*offset += 2;
ti = proto_tree_add_item(tree, hf_vnc_color_groups, tvb,
*offset, number_of_colors * 6, ENC_NA);
vnc_colormap_num_groups =
proto_item_add_subtree(ti, ett_vnc_colormap_num_groups);
for(counter = 0; counter < number_of_colors; counter++) {
vnc_colormap_color_group = proto_tree_add_subtree_format(vnc_colormap_num_groups, tvb,
*offset, 6, ett_vnc_colormap_color_group, NULL,
"Color group #%d", counter+1);
proto_tree_add_item(vnc_colormap_color_group,
hf_vnc_colormap_red, tvb,
*offset, 2, ENC_BIG_ENDIAN);
*offset += 2;
proto_tree_add_item(vnc_colormap_color_group,
hf_vnc_colormap_green, tvb,
*offset, 2, ENC_BIG_ENDIAN);
*offset += 2;
proto_tree_add_item(vnc_colormap_color_group,
hf_vnc_colormap_blue, tvb,
*offset, 2, ENC_BIG_ENDIAN);
*offset += 2;
}
return 0;
}
static void
vnc_server_ring_bell(tvbuff_t *tvb _U_, packet_info *pinfo, gint *offset _U_,
proto_tree *tree _U_)
{
col_append_sep_str(pinfo->cinfo, COL_INFO, "; ", "Server ring bell on client");
/* This message type has no payload... */
}
static guint
vnc_server_cut_text(tvbuff_t *tvb, packet_info *pinfo, gint *offset,
proto_tree *tree)
{
guint32 text_len;
proto_item *pi;
col_append_sep_str(pinfo->cinfo, COL_INFO, "; ", "Server cut text");
text_len = tvb_get_ntohl(tvb, *offset);
pi = proto_tree_add_item(tree, hf_vnc_server_cut_text_len, tvb, *offset, 4,
ENC_BIG_ENDIAN);
*offset += 4;
if (text_len > 100000) {
expert_add_info_format(pinfo, pi, &ei_vnc_too_many_cut_text,
"Too much cut text (%d), aborting dissection", text_len);
return(0);
}
VNC_BYTES_NEEDED(text_len);
proto_tree_add_item(tree, hf_vnc_server_cut_text, tvb, *offset,
text_len, ENC_ASCII|ENC_NA);
*offset += text_len;
return *offset;
}
static void
vnc_set_bytes_per_pixel(packet_info *pinfo, const guint8 bytes_per_pixel)
{
vnc_packet_t *per_packet_info;
per_packet_info = (vnc_packet_t *)p_get_proto_data(wmem_file_scope(), pinfo, proto_vnc, 0);
/* Our calling function should have set the packet's proto data already */
DISSECTOR_ASSERT(per_packet_info != NULL);
per_packet_info->bytes_per_pixel = bytes_per_pixel;
}
static void
vnc_set_depth(packet_info *pinfo, const guint8 depth)
{
vnc_packet_t *per_packet_info;
per_packet_info = (vnc_packet_t *)p_get_proto_data(wmem_file_scope(), pinfo, proto_vnc, 0);
/* Our calling function should have set the packet's proto data already */
DISSECTOR_ASSERT(per_packet_info != NULL);
per_packet_info->depth = depth;
}
static guint8
vnc_get_bytes_per_pixel(packet_info *pinfo)
{
vnc_packet_t *per_packet_info;
per_packet_info = (vnc_packet_t *)p_get_proto_data(wmem_file_scope(), pinfo, proto_vnc, 0);
/* Our calling function should have set the packet's proto data already */
DISSECTOR_ASSERT(per_packet_info != NULL);
return per_packet_info->bytes_per_pixel;
}
static guint8
vnc_get_depth(packet_info *pinfo)
{
vnc_packet_t *per_packet_info;
per_packet_info = (vnc_packet_t *)p_get_proto_data(wmem_file_scope(), pinfo, proto_vnc, 0);
/* Our calling function should have set the packet's proto data already */
DISSECTOR_ASSERT(per_packet_info != NULL);
return per_packet_info->depth;
}
/* Register the protocol with Wireshark */
void
proto_register_vnc(void)
{
module_t *vnc_module; /* To handle our preferences */
expert_module_t* expert_vnc;
/* Setup list of header fields */
static hf_register_info hf[] = {
{ &hf_vnc_padding,
{ "Padding", "vnc.padding",
FT_NONE, BASE_NONE, NULL, 0x0,
"Unused space", HFILL }
},
{ &hf_vnc_server_proto_ver,
{ "Server protocol version", "vnc.server_proto_ver",
FT_STRING, BASE_NONE, NULL, 0x0,
"VNC protocol version on server", HFILL }
},
{ &hf_vnc_client_proto_ver,
{ "Client protocol version", "vnc.client_proto_ver",
FT_STRING, BASE_NONE, NULL, 0x0,
"VNC protocol version on client", HFILL }
},
{ &hf_vnc_num_security_types,
{ "Number of security types", "vnc.num_security_types",
FT_UINT8, BASE_DEC, NULL, 0x0,
"Number of security (authentication) types supported by the server", HFILL }
},
{ &hf_vnc_security_type,
{ "Security type", "vnc.security_type",
FT_UINT8, BASE_DEC, VALS(vnc_security_types_vs), 0x0,
"Security types offered by the server (VNC versions => 3.007", HFILL }
},
{ &hf_vnc_server_security_type,
{ "Security type", "vnc.server_security_type",
FT_UINT32, BASE_DEC, VALS(vnc_security_types_vs), 0x0,
"Security type mandated by the server", HFILL }
},
{ &hf_vnc_client_security_type,
{ "Security type selected", "vnc.client_security_type",
FT_UINT8, BASE_DEC, VALS(vnc_security_types_vs), 0x0,
"Security type selected by the client", HFILL }
},
{ &hf_vnc_tight_num_tunnel_types,
{ "Number of supported tunnel types", "vnc.num_tunnel_types",
FT_UINT32, BASE_DEC, NULL, 0x0,
"Number of tunnel types for TightVNC", HFILL }
},
{ &hf_vnc_tight_tunnel_type,
{ "Tunnel type", "vnc.tunnel_type",
FT_UINT8, BASE_DEC, NULL, 0x0,
"Tunnel type specific to TightVNC", HFILL }
},
{ &hf_vnc_tight_num_auth_types,
{ "Number of supported authentication types", "vnc.num_auth_types",
FT_UINT32, BASE_DEC, NULL, 0x0,
"Authentication types specific to TightVNC", HFILL }
},
{ &hf_vnc_tight_auth_code,
{ "Authentication code", "vnc.tight_auth_code",
FT_UINT32, BASE_DEC, VALS(vnc_security_types_vs), 0x0,
"Authentication code specific to TightVNC", HFILL }
},
{ &hf_vnc_tight_server_message_type,
{ "Server message type (TightVNC)", "vnc.tight_server_message_type",
FT_INT32, BASE_DEC, NULL, 0x0,
"Server message type specific to TightVNC", HFILL }
},
{ &hf_vnc_tight_server_vendor,
{ "Server vendor code", "vnc.server_vendor",
FT_STRING, BASE_NONE, NULL, 0x0,
"Server vendor code specific to TightVNC", HFILL }
},
{ &hf_vnc_tight_signature,
{ "Signature", "vnc.signature",
FT_STRING, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_vnc_tight_server_name,
{ "Server name", "vnc.server_name",
FT_STRING, BASE_NONE, NULL, 0x0,
"Server name specific to TightVNC", HFILL }
},
{ &hf_vnc_tight_client_message_type,
{ "Client message type (TightVNC)", "vnc.tight_client_message_type",
FT_INT32, BASE_DEC, NULL, 0x0,
"Client message type specific to TightVNC", HFILL }
},
{ &hf_vnc_tight_client_vendor,
{ "Client vendor code", "vnc.client_vendor",
FT_STRING, BASE_NONE, NULL, 0x0,
"Client vendor code specific to TightVNC", HFILL }
},
{ &hf_vnc_tight_client_name,
{ "Client name", "vnc.client_name",
FT_STRING, BASE_NONE, NULL, 0x0,
"Client name specific to TightVNC", HFILL }
},
{ &hf_vnc_tight_encoding_type,
{ "Encoding type", "vnc.encoding_type",
FT_INT32, BASE_DEC, VALS(encoding_types_vs), 0x0,
"Encoding type specific to TightVNC", HFILL }
},
{ &hf_vnc_tight_encoding_vendor,
{ "Encoding vendor code", "vnc.encoding_vendor",
FT_STRING, BASE_NONE, NULL, 0x0,
"Encoding vendor code specific to TightVNC", HFILL }
},
{ &hf_vnc_tight_encoding_name,
{ "Encoding name", "vnc.encoding_name",
FT_STRING, BASE_NONE, NULL, 0x0,
"Encoding name specific to TightVNC", HFILL }
},
{ &hf_vnc_tight_reset_stream0,
{ "Reset compression stream 0", "vnc.tight_reset_stream0",
FT_BOOLEAN, BASE_NONE, NULL, 0x0,
"Tight compression, reset compression stream 0", HFILL }
},
{ &hf_vnc_tight_reset_stream1,
{ "Reset compression stream 1", "vnc.tight_reset_stream1",
FT_BOOLEAN, BASE_NONE, NULL, 0x0,
"Tight compression, reset compression stream 1", HFILL }
},
{ &hf_vnc_tight_reset_stream2,
{ "Reset compression stream 2", "vnc.tight_reset_stream2",
FT_BOOLEAN, BASE_NONE, NULL, 0x0,
"Tight compression, reset compression stream 2", HFILL }
},
{ &hf_vnc_tight_reset_stream3,
{ "Reset compression stream 3", "vnc.tight_reset_stream3",
FT_BOOLEAN, BASE_NONE, NULL, 0x0,
"Tight compression, reset compression stream 3", HFILL }
},
{ &hf_vnc_tight_rect_type,
{ "Rectangle type", "vnc.tight_rect_type",
FT_UINT8, BASE_HEX, NULL, 0x0,
"Tight compression, rectangle type", HFILL }
},
{ &hf_vnc_tight_image_len,
{ "Image data length", "vnc.tight_image_len",
FT_UINT32, BASE_DEC, NULL, 0x0,
"Tight compression, length of image data", HFILL }
},
{ &hf_vnc_tight_image_data,
{ "Image data", "vnc.tight_image_data",
FT_BYTES, BASE_NONE, NULL, 0x0,
"Tight compression, image data", HFILL }
},
{ &hf_vnc_tight_fill_color,
{ "Fill color (RGB)", "vnc.tight_fill_color",
FT_BYTES, BASE_NONE, NULL, 0x0,
"Tight compression, fill color for solid rectangle", HFILL }
},
{ &hf_vnc_tight_filter_flag,
{ "Explicit filter flag", "vnc.tight_filter_flag",
FT_BOOLEAN, BASE_NONE, NULL, 0x0,
"Tight compression, explicit filter flag", HFILL }
},
{ &hf_vnc_tight_filter_id,
{ "Filter ID", "vnc.tight_filter_id",
FT_UINT8, BASE_DEC, VALS(tight_filter_ids_vs), 0x0,
"Tight compression, filter ID", HFILL }
},
{ &hf_vnc_tight_palette_num_colors,
{ "Number of colors in palette", "vnc.tight_palette_num_colors",
FT_UINT8, BASE_DEC, NULL, 0x0,
"Tight compression, number of colors in rectangle's palette", HFILL }
},
{ &hf_vnc_tight_palette_data,
{ "Palette data", "vnc.tight_palette_data",
FT_BYTES, BASE_NONE, NULL, 0x0,
"Tight compression, palette data for a rectangle", HFILL }
},
{ &hf_vnc_auth_challenge,
{ "Authentication challenge", "vnc.auth_challenge",
FT_BYTES, BASE_NONE, NULL, 0x0,
"Random authentication challenge from server to client", HFILL }
},
{ &hf_vnc_auth_response,
{ "Authentication response", "vnc.auth_response",
FT_BYTES, BASE_NONE, NULL, 0x0,
"Client's encrypted response to the server's authentication challenge", HFILL }
},
{ &hf_vnc_auth_result,
{ "Authentication result", "vnc.auth_result",
FT_BOOLEAN, 32, TFS(&auth_result_tfs), 0x1,
NULL, HFILL }
},
{ &hf_vnc_auth_error_length,
{ "Length of authentication error", "vnc.auth_error_len",
FT_UINT32, BASE_DEC, NULL, 0x0,
"Authentication error length (present only if the authentication result is fail", HFILL }
},
{ &hf_vnc_auth_error,
{ "Authentication error", "vnc.auth_error",
FT_STRING, BASE_NONE, NULL, 0x0,
"Authentication error (present only if the authentication result is fail", HFILL }
},
{ &hf_vnc_ard_auth_generator,
{ "Generator", "vnc.ard_auth_generator",
FT_UINT16, BASE_DEC, NULL, 0x0,
"Generator for Diffie-Hellman key exchange", HFILL }
},
{ &hf_vnc_ard_auth_key_len,
{ "Key length", "vnc.ard_auth_key_len",
FT_UINT16, BASE_DEC, NULL, 0x0,
"Diffie-Hellman key length", HFILL }
},
{ &hf_vnc_ard_auth_modulus,
{ "Prime modulus", "vnc.ard_auth_modulus",
FT_BYTES, BASE_NONE, NULL, 0x0,
"Prime modulus for Diffie-Hellman key exchange", HFILL }
},
{ &hf_vnc_ard_auth_server_key,
{ "Server public key", "vnc.ard_auth_server_key",
FT_BYTES, BASE_NONE, NULL, 0x0,
"Server's public Diffie-Hellman key", HFILL }
},
{ &hf_vnc_ard_auth_credentials,
{ "Encrypted credentials", "vnc.ard_auth_credentials",
FT_BYTES, BASE_NONE, NULL, 0x0,
"Encrypted client username and password", HFILL }
},
{ &hf_vnc_ard_auth_client_key,
{ "Client public key", "vnc.ard_auth_client_key",
FT_BYTES, BASE_NONE, NULL, 0x0,
"Client's public Diffie-Hellman key", HFILL }
},
{ &hf_vnc_share_desktop_flag,
{ "Share desktop flag", "vnc.share_desktop_flag",
FT_BOOLEAN, BASE_NONE, NULL, 0x0,
"Client's desire to share the server's desktop with other clients", HFILL }
},
{ &hf_vnc_width,
{ "Framebuffer width", "vnc.width",
FT_UINT16, BASE_DEC, NULL, 0x0,
"Width of the framebuffer (screen) in pixels", HFILL }
},
{ &hf_vnc_height,
{ "Framebuffer height", "vnc.height",
FT_UINT16, BASE_DEC, NULL, 0x0,
"Height of the framebuffer (screen) in pixels", HFILL }
},
{ &hf_vnc_server_bits_per_pixel,
{ "Bits per pixel", "vnc.server_bits_per_pixel",
FT_UINT8, BASE_DEC, NULL, 0x0,
"Number of bits used by server for each pixel value on the wire from the server", HFILL }
},
{ &hf_vnc_server_depth,
{ "Depth", "vnc.server_depth",
FT_UINT8, BASE_DEC, NULL, 0x0,
"Number of useful bits in the pixel value on server", HFILL }
},
{ &hf_vnc_server_big_endian_flag,
{ "Big endian flag", "vnc.server_big_endian_flag",
FT_BOOLEAN, BASE_NONE, NULL, 0x0,
"True if multi-byte pixels are interpreted as big endian by server", HFILL }
},
{ &hf_vnc_server_true_color_flag,
{ "True color flag", "vnc.server_true_color_flag",
FT_BOOLEAN, BASE_NONE, NULL, 0x0,
"If true, then the next six items specify how to extract the red, green and blue intensities from the pixel value on the server.", HFILL }
},
{ &hf_vnc_server_red_max,
{ "Red maximum", "vnc.server_red_max",
FT_UINT16, BASE_DEC, NULL, 0x0,
"Maximum red value on server as n: 2^n - 1", HFILL }
},
{ &hf_vnc_server_green_max,
{ "Green maximum", "vnc.server_green_max",
FT_UINT16, BASE_DEC, NULL, 0x0,
"Maximum green value on server as n: 2^n - 1", HFILL }
},
{ &hf_vnc_server_blue_max,
{ "Blue maximum", "vnc.server_blue_max",
FT_UINT16, BASE_DEC, NULL, 0x0,
"Maximum blue value on server as n: 2^n - 1", HFILL }
},
{ &hf_vnc_server_red_shift,
{ "Red shift", "vnc.server_red_shift",
FT_UINT8, BASE_DEC, NULL, 0x0,
"Number of shifts needed to get the red value in a pixel to the least significant bit on the server", HFILL }
},
{ &hf_vnc_server_green_shift,
{ "Green shift", "vnc.server_green_shift",
FT_UINT8, BASE_DEC, NULL, 0x0,
"Number of shifts needed to get the green value in a pixel to the least significant bit on the server", HFILL }
},
{ &hf_vnc_server_blue_shift,
{ "Blue shift", "vnc.server_blue_shift",
FT_UINT8, BASE_DEC, NULL, 0x0,
"Number of shifts needed to get the blue value in a pixel to the least significant bit on the server", HFILL }
},
{ &hf_vnc_desktop_name_len,
{ "Desktop name length", "vnc.desktop_name_len",
FT_UINT32, BASE_DEC, NULL, 0x0,
"Length of desktop name in bytes", HFILL }
},
{ &hf_vnc_desktop_screen_num,
{ "Number of screens", "vnc.screen_num",
FT_UINT8, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_vnc_desktop_screen_id,
{ "Screen ID", "vnc.screen_id",
FT_UINT32, BASE_DEC, NULL, 0x0,
"ID of screen", HFILL }
},
{ &hf_vnc_desktop_screen_x,
{ "Screen X position", "vnc.screen_x",
FT_UINT16, BASE_DEC, NULL, 0x0,
"X coordinate of screen", HFILL }
},
{ &hf_vnc_desktop_screen_y,
{ "Screen Y position", "vnc.screen_y",
FT_UINT16, BASE_DEC, NULL, 0x0,
"Y coordinate of screen", HFILL }
},
{ &hf_vnc_desktop_screen_width,
{ "Screen width", "vnc.screen_width",
FT_UINT16, BASE_DEC, NULL, 0x0,
"Width of screen", HFILL }
},
{ &hf_vnc_desktop_screen_height,
{ "Screen height", "vnc.screen_height",
FT_UINT16, BASE_DEC, NULL, 0x0,
"Height of screen", HFILL }
},
{ &hf_vnc_desktop_screen_flags,
{ "Screen flags", "vnc.screen_flags",
FT_UINT32, BASE_DEC, NULL, 0x0,
"Flags of screen", HFILL }
},
{ &hf_vnc_desktop_name,
{ "Desktop name", "vnc.desktop_name",
FT_STRING, BASE_NONE, NULL, 0x0,
"Name of the VNC desktop on the server", HFILL }
},
{ &hf_vnc_num_server_message_types,
{ "Server message types", "vnc.num_server_message_types",
FT_UINT16, BASE_DEC, NULL, 0x0,
"Unknown", HFILL } /* XXX - Needs description */
},
{ &hf_vnc_num_client_message_types,
{ "Client message types", "vnc.num_client_message_types",
FT_UINT16, BASE_DEC, NULL, 0x0,
"Unknown", HFILL } /* XXX - Needs description */
},
{ &hf_vnc_num_encoding_types,
{ "Encoding types", "vnc.num_encoding_types",
FT_UINT16, BASE_DEC, NULL, 0x0,
"Unknown", HFILL } /* XXX - Needs description */
},
{ &hf_vnc_client_message_type,
{ "Client Message Type", "vnc.client_message_type",
FT_UINT8, BASE_DEC, VALS(vnc_client_message_types_vs), 0x0,
"Message type from client", HFILL }
},
{ &hf_vnc_client_bits_per_pixel,
{ "Bits per pixel", "vnc.client_bits_per_pixel",
FT_UINT8, BASE_DEC, NULL, 0x0,
"Number of bits used by server for each pixel value on the wire from the client", HFILL }
},
{ &hf_vnc_client_depth,
{ "Depth", "vnc.client_depth",
FT_UINT8, BASE_DEC, NULL, 0x0,
"Number of useful bits in the pixel value on client", HFILL }
},
{ &hf_vnc_client_big_endian_flag,
{ "Big endian flag", "vnc.client_big_endian_flag",
FT_BOOLEAN, BASE_NONE, NULL, 0x0,
"True if multi-byte pixels are interpreted as big endian by client", HFILL }
},
{ &hf_vnc_client_true_color_flag,
{ "True color flag", "vnc.client_true_color_flag",
FT_BOOLEAN, BASE_NONE, NULL, 0x0,
"If true, then the next six items specify how to extract the red, green and blue intensities from the pixel value on the client.", HFILL }
},
{ &hf_vnc_client_red_max,
{ "Red maximum", "vnc.client_red_max",
FT_UINT16, BASE_DEC, NULL, 0x0,
"Maximum red value on client as n: 2^n - 1", HFILL }
},
{ &hf_vnc_client_green_max,
{ "Green maximum", "vnc.client_green_max",
FT_UINT16, BASE_DEC, NULL, 0x0,
"Maximum green value on client as n: 2^n - 1", HFILL }
},
{ &hf_vnc_client_blue_max,
{ "Blue maximum", "vnc.client_blue_max",
FT_UINT16, BASE_DEC, NULL, 0x0,
"Maximum blue value on client as n: 2^n - 1", HFILL }
},
{ &hf_vnc_client_red_shift,
{ "Red shift", "vnc.client_red_shift",
FT_UINT8, BASE_DEC, NULL, 0x0,
"Number of shifts needed to get the red value in a pixel to the least significant bit on the client", HFILL }
},
{ &hf_vnc_client_green_shift,
{ "Green shift", "vnc.client_green_shift",
FT_UINT8, BASE_DEC, NULL, 0x0,
"Number of shifts needed to get the green value in a pixel to the least significant bit on the client", HFILL }
},
{ &hf_vnc_client_blue_shift,
{ "Blue shift", "vnc.client_blue_shift",
FT_UINT8, BASE_DEC, NULL, 0x0,
"Number of shifts needed to get the blue value in a pixel to the least significant bit on the client", HFILL }
},
/* Client Key Event */
{ &hf_vnc_key_down,
{ "Key down", "vnc.key_down",
FT_BOOLEAN, BASE_NONE, TFS(&tfs_yes_no), 0x0,
"Specifies whether the key is being pressed or not", HFILL }
},
{ &hf_vnc_key,
{ "Key", "vnc.key",
FT_UINT32, BASE_HEX | BASE_EXT_STRING, &x11_keysym_vals_source_ext, 0x0, /* keysym_vals_source_exr is from packet-x11.c */
"Key being pressed/depressed", HFILL }
},
/* Client Pointer Event */
{ &hf_vnc_button_1_pos,
{ "Mouse button #1 position", "vnc.button_1_pos",
FT_BOOLEAN, 8, TFS(&button_mask_tfs), 0x1,
"Whether mouse button #1 is being pressed or not", HFILL }
},
{ &hf_vnc_button_2_pos,
{ "Mouse button #2 position", "vnc.button_2_pos",
FT_BOOLEAN, 8, TFS(&button_mask_tfs), 0x2,
"Whether mouse button #2 is being pressed or not", HFILL }
},
{ &hf_vnc_button_3_pos,
{ "Mouse button #3 position", "vnc.button_3_pos",
FT_BOOLEAN, 8, TFS(&button_mask_tfs), 0x4,
"Whether mouse button #3 is being pressed or not", HFILL }
},
{ &hf_vnc_button_4_pos,
{ "Mouse button #4 position", "vnc.button_4_pos",
FT_BOOLEAN, 8, TFS(&button_mask_tfs), 0x8,
"Whether mouse button #4 is being pressed or not", HFILL }
},
{ &hf_vnc_button_5_pos,
{ "Mouse button #5 position", "vnc.button_5_pos",
FT_BOOLEAN, 8, TFS(&button_mask_tfs), 0x10,
"Whether mouse button #5 is being pressed or not", HFILL }
},
{ &hf_vnc_button_6_pos,
{ "Mouse button #6 position", "vnc.button_6_pos",
FT_BOOLEAN, 8, TFS(&button_mask_tfs), 0x20,
"Whether mouse button #6 is being pressed or not", HFILL }
},
{ &hf_vnc_button_7_pos,
{ "Mouse button #7 position", "vnc.button_7_pos",
FT_BOOLEAN, 8, TFS(&button_mask_tfs), 0x40,
"Whether mouse button #7 is being pressed or not", HFILL }
},
{ &hf_vnc_button_8_pos,
{ "Mouse button #8 position", "vnc.button_8_pos",
FT_BOOLEAN, 8, TFS(&button_mask_tfs), 0x80,
"Whether mouse button #8 is being pressed or not", HFILL }
},
{ &hf_vnc_pointer_x_pos,
{ "X position", "vnc.pointer_x_pos",
FT_UINT16, BASE_DEC, NULL, 0x0,
"Position of mouse cursor on the x-axis", HFILL }
},
{ &hf_vnc_pointer_y_pos,
{ "Y position", "vnc.pointer_y_pos",
FT_UINT16, BASE_DEC, NULL, 0x0,
"Position of mouse cursor on the y-axis", HFILL }
},
{ &hf_vnc_encoding_num,
{ "Number of encodings", "vnc.client_set_encodings_num",
FT_UINT16, BASE_DEC, NULL, 0x0,
"Number of encodings used to send pixel data from server to client", HFILL }
},
{ &hf_vnc_client_set_encodings_encoding_type,
{ "Encoding type", "vnc.client_set_encodings_encoding_type",
FT_INT32, BASE_DEC, VALS(encoding_types_vs), 0x0,
"Type of encoding used to send pixel data from server to client", HFILL }
},
/* Client Framebuffer Update Request */
{ &hf_vnc_update_req_incremental,
{ "Incremental update", "vnc.update_req_incremental",
FT_BOOLEAN, BASE_NONE, NULL, 0x0,
"Specifies if the client wants an incremental update instead of a full one", HFILL }
},
{ &hf_vnc_update_req_x_pos,
{ "X position", "vnc.update_req_x_pos",
FT_UINT16, BASE_DEC, NULL, 0x0,
"X position of framebuffer (screen) update requested", HFILL }
},
{ &hf_vnc_update_req_y_pos,
{ "Y position", "vnc.update_req_y_pos",
FT_UINT16, BASE_DEC, NULL, 0x0,
"Y position of framebuffer (screen) update request", HFILL }
},
{ &hf_vnc_update_req_width,
{ "Width", "vnc.update_req_width",
FT_UINT16, BASE_DEC, NULL, 0x0,
"Width of framebuffer (screen) update request", HFILL }
},
{ &hf_vnc_update_req_height,
{ "Height", "vnc.update_req_height",
FT_UINT16, BASE_DEC, NULL, 0x0,
"Height of framebuffer (screen) update request", HFILL }
},
{ &hf_vnc_client_cut_text_len,
{ "Length", "vnc.client_cut_text_len",
FT_UINT32, BASE_DEC, NULL, 0x0,
"Length of client's copy/cut text (clipboard) string in bytes", HFILL }
},
{ &hf_vnc_client_cut_text,
{ "Text", "vnc.client_cut_text",
FT_STRING, BASE_NONE, NULL, 0x0,
"Text string in the client's copy/cut text (clipboard)", HFILL }
},
/********** Server Message Types **********/
{ &hf_vnc_server_message_type,
{ "Server Message Type", "vnc.server_message_type",
FT_UINT8, BASE_DEC, VALS(vnc_server_message_types_vs), 0x0,
"Message type from server", HFILL }
},
{ &hf_vnc_rectangle_num,
{ "Number of rectangles", "vnc.fb_update_num_rects",
FT_UINT16, BASE_DEC, NULL, 0x0,
"Number of rectangles of this server framebuffer update", HFILL }
},
{ &hf_vnc_fb_update_x_pos,
{ "X position", "vnc.fb_update_x_pos",
FT_UINT16, BASE_DEC, NULL, 0x0,
"X position of this server framebuffer update", HFILL }
},
{ &hf_vnc_fb_update_y_pos,
{ "Y position", "vnc.fb_update_y_pos",
FT_UINT16, BASE_DEC, NULL, 0x0,
"Y position of this server framebuffer update", HFILL }
},
{ &hf_vnc_fb_update_width,
{ "Width", "vnc.fb_update_width",
FT_UINT16, BASE_DEC, NULL, 0x0,
"Width of this server framebuffer update", HFILL }
},
{ &hf_vnc_fb_update_height,
{ "Height", "vnc.fb_update_height",
FT_UINT16, BASE_DEC, NULL, 0x0,
"Height of this server framebuffer update", HFILL }
},
{ &hf_vnc_fb_update_encoding_type,
{ "Encoding type", "vnc.fb_update_encoding_type",
FT_INT32, BASE_DEC, VALS(encoding_types_vs), 0x0,
"Encoding type of this server framebuffer update", HFILL }
},
/* Cursor encoding */
{ &hf_vnc_cursor_x_fore_back,
{ "X Cursor foreground RGB / background RGB", "vnc.cursor_x_fore_back",
FT_BYTES, BASE_NONE, NULL, 0x0,
"RGB values for the X cursor's foreground and background", HFILL }
},
{ &hf_vnc_cursor_encoding_pixels,
{ "Cursor encoding pixels", "vnc.cursor_encoding_pixels",
FT_BYTES, BASE_NONE, NULL, 0x0,
"Cursor encoding pixel data", HFILL }
},
{ &hf_vnc_cursor_encoding_bitmask,
{ "Cursor encoding bitmask", "vnc.cursor_encoding_bitmask",
FT_BYTES, BASE_NONE, NULL, 0x0,
"Cursor encoding pixel bitmask", HFILL }
},
/* Raw Encoding */
{ &hf_vnc_raw_pixel_data,
{ "Pixel data", "vnc.raw_pixel_data",
FT_BYTES, BASE_NONE, NULL, 0x0,
"Raw pixel data.", HFILL }
},
/* CopyRect Encoding*/
{ &hf_vnc_copyrect_src_x_pos,
{ "Source x position", "vnc.copyrect_src_x_pos",
FT_UINT16, BASE_DEC, NULL, 0x0,
"X position of the rectangle to copy from", HFILL }
},
{ &hf_vnc_copyrect_src_y_pos,
{ "Source y position", "vnc.copyrect_src_y_pos",
FT_UINT16, BASE_DEC, NULL, 0x0,
"Y position of the rectangle to copy from", HFILL }
},
/* RRE Encoding */
{ &hf_vnc_rre_num_subrects,
{ "Number of subrectangles", "vnc.rre_num_subrects",
FT_UINT32, BASE_DEC, NULL, 0x0,
"Number of subrectangles contained in this encoding type", HFILL }
},
{ &hf_vnc_rre_bg_pixel,
{ "Background pixel value", "vnc.rre_bg_pixel",
FT_BYTES, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_vnc_rre_subrect_pixel,
{ "Pixel value", "vnc.rre_subrect_pixel",
FT_BYTES, BASE_NONE, NULL, 0x0,
"Subrectangle pixel value", HFILL }
},
{ &hf_vnc_rre_subrect_x_pos,
{ "X position", "vnc.rre_subrect_x_pos",
FT_UINT16, BASE_DEC, NULL, 0x0,
"Position of this subrectangle on the x axis", HFILL }
},
{ &hf_vnc_rre_subrect_y_pos,
{ "Y position", "vnc.rre_subrect_y_pos",
FT_UINT16, BASE_DEC, NULL, 0x0,
"Position of this subrectangle on the y axis", HFILL }
},
{ &hf_vnc_rre_subrect_width,
{ "Width", "vnc.rre_subrect_width",
FT_UINT16, BASE_DEC, NULL, 0x0,
"Width of this subrectangle", HFILL }
},
{ &hf_vnc_rre_subrect_height,
{ "Height", "vnc.rre_subrect_height",
FT_UINT16, BASE_DEC, NULL, 0x0,
"Height of this subrectangle", HFILL }
},
/* Hextile Encoding */
{ &hf_vnc_hextile_subencoding_mask,
{ "Subencoding type", "vnc.hextile_subencoding",
FT_UINT8, BASE_DEC, NULL, 0x0,
"Hextile subencoding type.", HFILL }
},
{ &hf_vnc_hextile_raw,
{ "Raw", "vnc.hextile_raw",
FT_BOOLEAN, 8, TFS(&tfs_yes_no), 0x1,
"Raw subencoding is used in this tile", HFILL }
},
{ &hf_vnc_hextile_raw_value,
{ "Raw pixel values", "vnc.hextile_raw_value",
FT_BYTES, BASE_NONE, NULL, 0x0,
"Raw subencoding pixel values", HFILL }
},
{ &hf_vnc_hextile_bg,
{ "Background Specified", "vnc.hextile_bg",
FT_BOOLEAN, 8, TFS(&tfs_yes_no), 0x2,
"Background Specified subencoding is used in this tile", HFILL }
},
{ &hf_vnc_hextile_bg_value,
{ "Background pixel value", "vnc.hextile_bg_value",
FT_BYTES, BASE_NONE, NULL, 0x0,
"Background color for this tile", HFILL }
},
{ &hf_vnc_hextile_fg,
{ "Foreground Specified", "vnc.hextile_fg",
FT_BOOLEAN, 8, TFS(&tfs_yes_no), 0x4,
"Foreground Specified subencoding is used in this tile", HFILL }
},
{ &hf_vnc_hextile_fg_value,
{ "Foreground pixel value", "vnc.hextile_fg_value",
FT_BYTES, BASE_NONE, NULL, 0x0,
"Foreground color for this tile", HFILL }
},
{ &hf_vnc_hextile_anysubrects,
{ "Any Subrects", "vnc.hextile_anysubrects",
FT_BOOLEAN, 8, TFS(&tfs_yes_no), 0x8,
"Any subrects subencoding is used in this tile", HFILL }
},
{ &hf_vnc_hextile_num_subrects,
{ "Number of subrectangles", "vnc.hextile_num_subrects",
FT_UINT8, BASE_DEC, NULL, 0x0,
"Number of subrectangles that follow", HFILL }
},
{ &hf_vnc_hextile_subrectscolored,
{ "Subrects Colored", "vnc.hextile_subrectscolored",
FT_BOOLEAN, 8, TFS(&tfs_yes_no), 0x10,
"Subrects colored subencoding is used in this tile", HFILL }
},
{ &hf_vnc_hextile_subrect_pixel_value,
{ "Pixel value", "vnc.hextile_subrect_pixel_value",
FT_BYTES, BASE_NONE, NULL, 0x0,
"Pixel value of this subrectangle", HFILL }
},
{ &hf_vnc_hextile_subrect_x_pos,
{ "X position", "vnc.hextile_subrect_x_pos",
FT_UINT8, BASE_DEC, NULL, 0xF0, /* Top 4 bits */
"X position of this subrectangle", HFILL }
},
{ &hf_vnc_hextile_subrect_y_pos,
{ "Y position", "vnc.hextile_subrect_y_pos",
FT_UINT8, BASE_DEC, NULL, 0xF, /* Bottom 4 bits */
"Y position of this subrectangle", HFILL }
},
{ &hf_vnc_hextile_subrect_width,
{ "Width", "vnc.hextile_subrect_width",
FT_UINT8, BASE_DEC, NULL, 0xF0, /* Top 4 bits */
"Subrectangle width minus one", HFILL }
},
{ &hf_vnc_hextile_subrect_height,
{ "Height", "vnc.hextile_subrect_height",
FT_UINT8, BASE_DEC, NULL, 0xF, /* Bottom 4 bits */
"Subrectangle height minus one", HFILL }
},
/* ZRLE Encoding */
{ &hf_vnc_zrle_len,
{ "ZRLE compressed length", "vnc.zrle_len",
FT_UINT32, BASE_DEC, NULL, 0x0,
"Length of compressed ZRLE data that follows", HFILL }
},
{ &hf_vnc_zrle_subencoding,
{ "Subencoding type", "vnc.zrle_subencoding",
FT_UINT8, BASE_DEC, NULL, 0x0,
"Subencoding type byte", HFILL }
},
{ &hf_vnc_zrle_rle,
{ "RLE", "vnc.zrle_rle",
FT_UINT8, BASE_DEC, VALS(yes_no_vs), 0x80, /* Upper bit */
"Specifies that data is run-length encoded", HFILL }
},
{ &hf_vnc_zrle_palette_size,
{ "Palette size", "vnc.zrle_palette_size",
FT_UINT8, BASE_DEC, NULL, 0x7F, /* Lower 7 bits */
NULL, HFILL }
},
{ &hf_vnc_zrle_data,
{ "ZRLE compressed data", "vnc.zrle_data",
FT_BYTES, BASE_NONE, NULL, 0x0,
"Compressed ZRLE data. Compiling with zlib support will uncompress and dissect this data", HFILL }
},
{ &hf_vnc_zrle_raw,
{ "Pixel values", "vnc.zrle_raw",
FT_BYTES, BASE_NONE, NULL, 0x0,
"Raw pixel values for this tile", HFILL }
},
{ &hf_vnc_zrle_palette,
{ "Palette", "vnc.zrle_palette",
FT_BYTES, BASE_NONE, NULL, 0x0,
"Palette pixel values", HFILL }
},
/* Server Set Colormap Entries */
{ &hf_vnc_colormap_first_color,
{ "First color", "vnc.colormap_first_color",
FT_UINT16, BASE_DEC, NULL, 0x0,
"First color that should be mapped to given RGB intensities", HFILL }
},
{ &hf_vnc_color_groups,
{ "Color groups", "vnc.color_groups",
FT_NONE, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_vnc_colormap_num_colors,
{ "Number of color groups", "vnc.colormap_groups",
FT_UINT16, BASE_DEC, NULL, 0x0,
"Number of red/green/blue color groups", HFILL }
},
{ &hf_vnc_colormap_red,
{ "Red", "vnc.colormap_red",
FT_UINT16, BASE_DEC, NULL, 0x0,
"Red intensity", HFILL }
},
{ &hf_vnc_colormap_green,
{ "Green", "vnc.colormap_green",
FT_UINT16, BASE_DEC, NULL, 0x0,
"Green intensity", HFILL }
},
{ &hf_vnc_colormap_blue,
{ "Blue", "vnc.colormap_blue",
FT_UINT16, BASE_DEC, NULL, 0x0,
"Blue intensity", HFILL }
},
/* Server Cut Text */
{ &hf_vnc_server_cut_text_len,
{ "Length", "vnc.server_cut_text_len",
FT_UINT32, BASE_DEC, NULL, 0x0,
"Length of server's copy/cut text (clipboard) string in bytes", HFILL }
},
{ &hf_vnc_server_cut_text,
{ "Text", "vnc.server_cut_text",
FT_STRING, BASE_NONE, NULL, 0x0,
"Text string in the server's copy/cut text (clipboard)", HFILL }
},
/* LibVNCServer additions */
{ &hf_vnc_supported_messages_client2server,
{ "Client2server", "vnc.supported_messages_client2server",
FT_BYTES, BASE_NONE, NULL, 0x0,
"Supported client to server messages (bit flags)", HFILL }
},
{ &hf_vnc_supported_messages_server2client,
{ "Server2client", "vnc.supported_messages_server2client",
FT_BYTES, BASE_NONE, NULL, 0x0,
"Supported server to client messages (bit flags)", HFILL }
},
{ &hf_vnc_num_supported_encodings,
{ "Number of supported encodings", "vnc.num_supported_encodings",
FT_UINT16, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_vnc_supported_encodings,
{ "Encoding", "vnc.supported_encodings",
FT_UINT32, BASE_HEX, NULL, 0x0,
"Supported encoding", HFILL }
},
{ &hf_vnc_server_identity,
{ "Server Identity", "vnc.server_identity",
FT_STRING, BASE_NONE, NULL, 0x0,
"Server identity string", HFILL }
},
/* MirrorLink */
{ &hf_vnc_mirrorlink_type,
{ "Type", "vnc.mirrorlink_type",
FT_UINT8, BASE_DEC, VALS(vnc_mirrorlink_types_vs), 0x0,
"MirrorLink extension message type", HFILL }
},
{ &hf_vnc_mirrorlink_length,
{ "Length", "vnc.mirrorlink_length",
FT_UINT16, BASE_DEC, NULL, 0x0,
"Payload length", HFILL }
},
{ &hf_vnc_mirrorlink_version_major,
{ "Major Version", "vnc.mirrorlink_version_major",
FT_UINT8, BASE_DEC, NULL, 0x0,
"MirrorLink major version", HFILL }
},
{ &hf_vnc_mirrorlink_version_minor,
{ "Minor Version", "vnc.mirrorlink_version_minor",
FT_UINT8, BASE_DEC, NULL, 0x0,
"MirrorLink minor version", HFILL }
},
{ &hf_vnc_mirrorlink_framebuffer_configuration,
{ "Configuration",
"vnc.mirrorlink_framebuffer_configuration",
FT_UINT16, BASE_HEX, NULL, 0x0,
"Framebuffer configuration", HFILL }
},
{ &hf_vnc_mirrorlink_pixel_width,
{ "Pixel Width", "vnc.mirrorlink_pixel_width",
FT_UINT16, BASE_DEC, NULL, 0x0,
"Display width [pixel]", HFILL }
},
{ &hf_vnc_mirrorlink_pixel_height,
{ "Pixel Height", "vnc.mirrorlink_pixel_height",
FT_UINT16, BASE_DEC, NULL, 0x0,
"Display height [pixel]", HFILL }
},
{ &hf_vnc_mirrorlink_pixel_format,
{ "Pixel Format", "vnc.mirrorlink_pixel_format",
FT_UINT16, BASE_HEX, NULL, 0x0,
"Pixel format support", HFILL }
},
{ &hf_vnc_mirrorlink_display_width,
{ "Display Width", "vnc.mirrorlink_display_width",
FT_UINT16, BASE_DEC, NULL, 0x0,
"Display width [mm]", HFILL }
},
{ &hf_vnc_mirrorlink_display_height,
{ "Display Height", "vnc.mirrorlink_display_height",
FT_UINT16, BASE_DEC, NULL, 0x0,
"Display height [mm]", HFILL }
},
{ &hf_vnc_mirrorlink_display_distance,
{ "Display Distance", "vnc.mirrorlink_display_distance",
FT_UINT16, BASE_DEC, NULL, 0x0,
"Display distance [mm]", HFILL }
},
{ &hf_vnc_mirrorlink_keyboard_language,
{ "Keyboard Language", "vnc.mirrorlink_keyboard_language",
FT_STRING, BASE_NONE, NULL, 0x0,
"Keyboard layout - Language code (according ISO 639-1)",
HFILL }
},
{ &hf_vnc_mirrorlink_keyboard_country,
{ "Keyboard Country", "vnc.mirrorlink_keyboard_country",
FT_STRING, BASE_NONE, NULL, 0x0,
"Keyboard layout - Country code (according ISO 3166-1 alpha-2)",
HFILL }
},
{ &hf_vnc_mirrorlink_ui_language,
{ "UI Language", "vnc.mirrorlink_ui_language",
FT_STRING, BASE_NONE, NULL, 0x0,
"UI language - Language code (according ISO 639-1)", HFILL }
},
{ &hf_vnc_mirrorlink_ui_country,
{ "UI Country", "vnc.mirrorlink_ui_country",
FT_STRING, BASE_NONE, NULL, 0x0,
"UI language - Country code (according ISO 3166-1 alpha 2)",
HFILL }
},
{ &hf_vnc_mirrorlink_knob_keys,
{ "Knob Keys", "vnc.mirrorlink_knob_keys",
FT_UINT32, BASE_HEX, NULL, 0x0,
"Supported knob keys", HFILL }
},
{ &hf_vnc_mirrorlink_device_keys,
{ "Device Keys", "vnc.mirrorlink_device_keys",
FT_UINT32, BASE_HEX, NULL, 0x0,
"Supported device keys", HFILL }
},
{ &hf_vnc_mirrorlink_multimedia_keys,
{ "Multimedia Keys", "vnc.mirrorlink_multimedia_keys",
FT_UINT32, BASE_HEX, NULL, 0x0,
"Supported multimedia keys", HFILL }
},
{ &hf_vnc_mirrorlink_key_related,
{ "Keyboard", "vnc.mirrorlink_key_related",
FT_UINT32, BASE_HEX, NULL, 0x0,
"Keyboard related", HFILL }
},
{ &hf_vnc_mirrorlink_pointer_related,
{ "Pointer", "vnc.mirrorlink_pointer_related",
FT_UINT32, BASE_HEX, NULL, 0x0,
"Pointer related", HFILL }
},
{ &hf_vnc_mirrorlink_key_symbol_value_client,
{ "Client KeySymValue",
"vnc.mirrorlink_key_symbol_value_client",
FT_UINT32, BASE_HEX, NULL, 0x0,
"Client key symbol value", HFILL }
},
{ &hf_vnc_mirrorlink_key_symbol_value_server,
{ "Server KeySymValue",
"vnc.mirrorlink_key_symbol_value_server",
FT_UINT32, BASE_HEX, NULL, 0x0,
"Server key symbol value", HFILL }
},
{ &hf_vnc_mirrorlink_key_configuration,
{ "Configuration", "vnc.mirrorlink_key_configuration",
FT_UINT8, BASE_HEX, NULL, 0x0,
"Key event listing configuration", HFILL }
},
{ &hf_vnc_mirrorlink_key_num_events,
{ "Number of Key Events", "vnc.mirrorlink_key_num_events",
FT_UINT8, BASE_DEC, NULL, 0x0,
"Number of key events in list", HFILL }
},
{ &hf_vnc_mirrorlink_key_event_counter,
{ "Key Event Counter", "vnc.mirrorlink_key_event_counter",
FT_UINT16, BASE_DEC, NULL, 0x0,
"Key event listing counter", HFILL }
},
{ &hf_vnc_mirrorlink_key_symbol_value,
{ "KeySymValue",
"vnc.mirrorlink_key_symbol_value",
FT_UINT32, BASE_HEX, NULL, 0x0,
"Key symbol value", HFILL }
},
{ &hf_vnc_mirrorlink_key_request_configuration,
{ "Configuration", "vnc.mirrorlink_key_request_configuration",
FT_UINT32, BASE_HEX, NULL, 0x0,
"Key event listing request configuration", HFILL }
},
{ &hf_vnc_mirrorlink_keyboard_configuration,
{ "Configuration", "vnc.mirrorlink_keyboard_configuration",
FT_UINT32, BASE_HEX, NULL, 0x0,
"Virtual keyboard configuration", HFILL }
},
{ &hf_vnc_mirrorlink_cursor_x,
{ "Cursor X", "vnc.mirrorlink_cursor_x",
FT_UINT16, BASE_DEC, NULL, 0x0,
"Cursor - X position", HFILL }
},
{ &hf_vnc_mirrorlink_cursor_y,
{ "Cursor Y", "vnc.mirrorlink_cursor_y",
FT_UINT16, BASE_DEC, NULL, 0x0,
"Cursor - Y position", HFILL }
},
{ &hf_vnc_mirrorlink_text_x,
{ "Text X", "vnc.mirrorlink_text_x",
FT_UINT16, BASE_DEC, NULL, 0x0,
"Text input area - X position", HFILL }
},
{ &hf_vnc_mirrorlink_text_y,
{ "Text Y", "vnc.mirrorlink_text_y",
FT_UINT16, BASE_DEC, NULL, 0x0,
"Text input area - Y position", HFILL }
},
{ &hf_vnc_mirrorlink_text_width,
{ "Text Width", "vnc.mirrorlink_text_width",
FT_UINT16, BASE_DEC, NULL, 0x0,
"Text input area - Width", HFILL }
},
{ &hf_vnc_mirrorlink_text_height,
{ "Text Height", "vnc.mirrorlink_text_height",
FT_UINT16, BASE_DEC, NULL, 0x0,
"Text input area - Height", HFILL }
},
{ &hf_vnc_mirrorlink_keyboard_request_configuration,
{ "Configuration",
"vnc.mirrorlink_keyboard_request_configuration",
FT_UINT32, BASE_HEX, NULL, 0x0,
"Virtual keyboard request configuration", HFILL }
},
{ &hf_vnc_mirrorlink_device_status,
{ "Device Status", "vnc.mirrorlink_device_status",
FT_UINT32, BASE_HEX, NULL, 0x0,
"Status of Device Features", HFILL }
},
{ &hf_vnc_mirrorlink_app_id,
{ "App Id", "vnc.mirrorlink_app_id",
FT_UINT32, BASE_HEX, NULL, 0x0,
"Unique application id", HFILL }
},
{ &hf_vnc_mirrorlink_fb_block_x,
{ "Frambuffer X", "vnc.mirrorlink_fb_block_x",
FT_UINT16, BASE_DEC, NULL, 0x0,
"Frambuffer blocking - X position", HFILL }
},
{ &hf_vnc_mirrorlink_fb_block_y,
{ "Frambuffer Y", "vnc.mirrorlink_fb_block_y",
FT_UINT16, BASE_DEC, NULL, 0x0,
"Frambuffer blocking - Y position", HFILL }
},
{ &hf_vnc_mirrorlink_fb_block_width,
{ "Frambuffer Width", "vnc.mirrorlink_fb_block_width",
FT_UINT16, BASE_DEC, NULL, 0x0,
"Frambuffer blocking - Width", HFILL }
},
{ &hf_vnc_mirrorlink_fb_block_height,
{ "Frambuffer Height", "vnc.mirrorlink_fb_block_height",
FT_UINT16, BASE_DEC, NULL, 0x0,
"Frambuffer blocking - Height", HFILL }
},
{ &hf_vnc_mirrorlink_fb_block_reason,
{ "Reason", "vnc.mirrorlink_fb_block_reason",
FT_UINT16, BASE_HEX, NULL, 0x0,
"Reason for blocking", HFILL }
},
{ &hf_vnc_mirrorlink_audio_block_reason,
{ "Reason", "vnc.mirrorlink_audio_block_reason",
FT_UINT16, BASE_HEX, NULL, 0x0,
"Reason for blocking", HFILL }
},
{ &hf_vnc_mirrorlink_touch_num_events,
{ "Number of Touch Events", "vnc.mirrorlink_touch_num_events",
FT_UINT8, BASE_DEC, NULL, 0x0,
"Number of touch events in list", HFILL }
},
{ &hf_vnc_mirrorlink_touch_x,
{ "Touch X", "vnc.mirrorlink_touch_x",
FT_UINT16, BASE_DEC, NULL, 0x0,
"Touch event - X position", HFILL }
},
{ &hf_vnc_mirrorlink_touch_y,
{ "Touch Y", "vnc.mirrorlink_touch_y",
FT_UINT16, BASE_DEC, NULL, 0x0,
"Touch event - Y position", HFILL }
},
{ &hf_vnc_mirrorlink_touch_id,
{ "Touch Id", "vnc.mirrorlink_touch_id",
FT_UINT8, BASE_DEC, NULL, 0x0,
"Touch event - identifier", HFILL }
},
{ &hf_vnc_mirrorlink_touch_pressure,
{ "Touch Pressure", "vnc.mirrorlink_touch_pressure",
FT_UINT8, BASE_DEC, NULL, 0x0,
"Touch event - pressure value", HFILL }
},
{ &hf_vnc_mirrorlink_text,
{ "Text", "vnc.mirrorlink_text",
FT_STRING, BASE_NONE, NULL, 0x0,
"Textual information", HFILL }
},
{ &hf_vnc_mirrorlink_text_length,
{ "Length", "vnc.mirrorlink_text_length",
FT_UINT16, BASE_DEC, NULL, 0x0,
"Length of textual information", HFILL }
},
{ &hf_vnc_mirrorlink_text_max_length,
{ "Max Length", "vnc.mirrorlink_text_max_length",
FT_UINT16, BASE_DEC, NULL, 0x0,
"Maximum length of textual information", HFILL }
},
{ &hf_vnc_mirrorlink_unknown,
{ "Unknown", "vnc.mirrorlink_unknown",
FT_BYTES, BASE_NONE, NULL, 0x0,
"Unknown data", HFILL }
},
/* Fence */
{ &hf_vnc_fence_flags,
{"Fence flags", "vnc.fence_flags", FT_UINT32, BASE_HEX,
NULL, 0, NULL, HFILL}},
{ &hf_vnc_fence_request,
{ "Fence_request", "vnc.fence_request",
FT_BOOLEAN, 32, NULL, VNC_FENCE_REQUEST,
NULL, HFILL }
},
{ &hf_vnc_fence_sync_next,
{ "Fence_sync_next", "vnc.fence_sync_next",
FT_BOOLEAN, 32, NULL, VNC_FENCE_SYNC_NEXT,
NULL, HFILL }
},
{ &hf_vnc_fence_block_after,
{ "Fence_block_after", "vnc.fence_block_after",
FT_BOOLEAN, 32, NULL, VNC_FENCE_BLOCK_AFTER,
NULL, HFILL }
},
{ &hf_vnc_fence_block_before,
{ "Fence block_before", "vnc.fence_block_before",
FT_BOOLEAN, 32, NULL, VNC_FENCE_BLOCK_BEFORE,
NULL, HFILL }
},
{ &hf_vnc_fence_payload_length,
{ "Fence payload length", "vnc.fence_payload_length",
FT_UINT8, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_vnc_fence_payload,
{ "Fence payload", "vnc.fence_payload",
FT_BYTES, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
/* Context Information */
{ &hf_vnc_context_information_app_id,
{ "App Id", "vnc.context_information_app_id",
FT_UINT32, BASE_HEX, NULL, 0x0,
"Unique application id", HFILL }
},
{ &hf_vnc_context_information_app_trust_level,
{ "App Trust Level",
"vnc.context_information_app_trust_level",
FT_UINT16, BASE_HEX, NULL, 0x0,
"Trust Level for Application Category", HFILL }
},
{ &hf_vnc_context_information_content_trust_level,
{ "Content Trust Level",
"vnc.context_information_content_trust_level",
FT_UINT16, BASE_HEX, NULL, 0x0,
"Trust Level for Content Category", HFILL }
},
{ &hf_vnc_context_information_app_category,
{ "App Category", "vnc.context_information_app_category",
FT_UINT32, BASE_HEX, NULL, 0x0,
"Application Category", HFILL }
},
{ &hf_vnc_context_information_content_category,
{ "Content Category",
"vnc.context_information_content_category",
FT_UINT32, BASE_HEX, NULL, 0x0,
"Visual content category", HFILL }
},
{ &hf_vnc_context_information_content_rules,
{ "Content Rules", "vnc.context_information_content_rules",
FT_UINT32, BASE_HEX, NULL, 0x0,
"Visual content rules", HFILL }
},
/* Scan Line based Run-Length Encoding */
{ &hf_vnc_slrle_run_num,
{ "Number of Runs", "vnc.slrle_run_num",
FT_UINT16, BASE_DEC, NULL, 0x0,
"Number of Runs within Line", HFILL }
},
{ &hf_vnc_slrle_run_data,
{ "Raw RLE data", "vnc.slrle_run_data",
FT_BYTES, BASE_NONE, NULL, 0x0,
"Raw Run-Length encoded data within Line", HFILL }
},
/* H.264 Encoding */
{ &hf_vnc_h264_slice_type,
{ "Slice Type", "vnc.h264_slice_type",
FT_UINT32, BASE_DEC, VALS(vnc_h264_slice_types_vs), 0x0,
"Frame slice type", HFILL }
},
{ &hf_vnc_h264_nbytes,
{ "Number of Bytes", "vnc.h264_nbytes",
FT_UINT32, BASE_DEC, NULL, 0x0,
"Number of bytes within frame", HFILL }
},
{ &hf_vnc_h264_width,
{ "Width", "vnc.h264_width",
FT_UINT32, BASE_DEC, NULL, 0x0,
"Frame Width", HFILL }
},
{ &hf_vnc_h264_height,
{ "Height", "vnc.h264_height",
FT_UINT32, BASE_DEC, NULL, 0x0,
"Frame Height", HFILL }
},
{ &hf_vnc_h264_data,
{ "Data", "vnc.h264_data",
FT_BYTES, BASE_NONE, NULL, 0x0,
"Frame H.264 data", HFILL }
},
};
/* Setup protocol subtree arrays */
static gint *ett[] = {
&ett_vnc,
&ett_vnc_client_message_type,
&ett_vnc_server_message_type,
&ett_vnc_rect,
&ett_vnc_encoding_type,
&ett_vnc_rre_subrect,
&ett_vnc_hextile_subencoding_mask,
&ett_vnc_hextile_num_subrects,
&ett_vnc_hextile_subrect,
&ett_vnc_hextile_tile,
&ett_vnc_zrle_subencoding,
&ett_vnc_colormap_num_groups,
&ett_vnc_desktop_screen,
&ett_vnc_colormap_color_group,
&ett_vnc_key_events,
&ett_vnc_touch_events,
&ett_vnc_slrle_subline,
&ett_vnc_fence_flags
};
static ei_register_info ei[] = {
{ &ei_vnc_possible_gtk_vnc_bug, { "vnc.possible_gtk_vnc_bug", PI_MALFORMED, PI_ERROR, "NULL found in greeting. client -> server greeting must be 12 bytes (possible gtk-vnc bug)", EXPFILL }},
{ &ei_vnc_auth_code_mismatch, { "vnc.auth_code_mismatch", PI_PROTOCOL, PI_WARN, "Authentication code does not match vendor or signature", EXPFILL }},
{ &ei_vnc_unknown_tight_vnc_auth, { "vnc.unknown_tight_vnc_auth", PI_PROTOCOL, PI_ERROR, "Unknown TIGHT VNC authentication", EXPFILL }},
{ &ei_vnc_too_many_rectangles, { "vnc.too_many_rectangles", PI_MALFORMED, PI_ERROR, "Too many rectangles, aborting dissection", EXPFILL }},
{ &ei_vnc_too_many_sub_rectangles, { "vnc.too_many_sub_rectangles", PI_MALFORMED, PI_ERROR, "Too many sub-rectangles, aborting dissection", EXPFILL }},
{ &ei_vnc_invalid_encoding, { "vnc.invalid_encoding", PI_MALFORMED, PI_ERROR, "Invalid encoding", EXPFILL }},
{ &ei_vnc_too_many_colors, { "vnc.too_many_colors", PI_MALFORMED, PI_ERROR, "Too many colors, aborting dissection", EXPFILL }},
{ &ei_vnc_too_many_cut_text, { "vnc.too_many_cut_text", PI_MALFORMED, PI_ERROR, "Too much cut text, aborting dissection", EXPFILL }},
{ &ei_vnc_zrle_failed, { "vnc.zrle_failed", PI_UNDECODED, PI_ERROR, "Decompression of ZRLE data failed", EXPFILL }},
{ &ei_vnc_unknown_tight, { "vnc.unknown_tight_packet", PI_UNDECODED, PI_WARN, "Unknown packet (TightVNC)", EXPFILL }},
{ &ei_vnc_reassemble, { "vnc.reassemble", PI_REASSEMBLE, PI_CHAT, "See further on for dissection of the complete (reassembled) PDU", EXPFILL }},
};
/* Register the protocol name and description */
proto_vnc = proto_register_protocol("Virtual Network Computing",
"VNC", "vnc");
/* Required function calls to register the header fields and subtrees */
proto_register_field_array(proto_vnc, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
expert_vnc = expert_register_protocol(proto_vnc);
expert_register_field_array(expert_vnc, ei, array_length(ei));
/* Register our preferences module */
vnc_module = prefs_register_protocol(proto_vnc, proto_reg_handoff_vnc);
prefs_register_bool_preference(vnc_module, "desegment",
"Reassemble VNC messages spanning multiple TCP segments.",
"Whether the VNC 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.",
&vnc_preference_desegment);
prefs_register_uint_preference(vnc_module, "alternate_port", "Alternate TCP port",
"Decode this port's traffic as VNC in addition to the default ports (5500, 5501, 5900, 5901)",
10, &vnc_preference_alternate_port);
}
void
proto_reg_handoff_vnc(void)
{
static gboolean inited = FALSE;
/* This is a behind the scenes variable that is not changed by the user.
* This stores last setting of the vnc_preference_alternate_port. Used to keep
* track of when the user has changed the setting so that we can delete
* and re-register with the new port number. */
static guint vnc_preference_alternate_port_last = 0;
if(!inited) {
vnc_handle = create_dissector_handle(dissect_vnc, proto_vnc);
dissector_add_uint("tcp.port", 5500, vnc_handle);
dissector_add_uint("tcp.port", 5501, vnc_handle);
dissector_add_uint("tcp.port", 5900, vnc_handle);
dissector_add_uint("tcp.port", 5901, vnc_handle);
heur_dissector_add("tcp", test_vnc_protocol, "VNC over TCP", "vnc_tcp", proto_vnc, HEURISTIC_ENABLE);
/* We don't register a port for the VNC HTTP server because
* that simply provides a java program for download via the
* HTTP protocol. The java program then connects to a standard
* VNC port. */
inited = TRUE;
} else { /* only after preferences have been read/changed */
if(vnc_preference_alternate_port != vnc_preference_alternate_port_last &&
vnc_preference_alternate_port != 5500 &&
vnc_preference_alternate_port != 5501 &&
vnc_preference_alternate_port != 5900 &&
vnc_preference_alternate_port != 5901) {
if (vnc_preference_alternate_port_last != 0) {
dissector_delete_uint("tcp.port",
vnc_preference_alternate_port_last,
vnc_handle);
}
/* Save this setting to see if has changed later */
vnc_preference_alternate_port_last =
vnc_preference_alternate_port;
/* Register the new port setting */
if (vnc_preference_alternate_port != 0) {
dissector_add_uint("tcp.port",
vnc_preference_alternate_port,
vnc_handle);
}
}
}
}
/*
* Editor modelines - http://www.wireshark.org/tools/modelines.html
*
* Local variables:
* c-basic-offset: 8
* tab-width: 8
* indent-tabs-mode: t
* End:
*
* vi: set shiftwidth=8 tabstop=8 noexpandtab:
* :indentSize=8:tabSize=8:noTabs=false:
*/