forked from osmocom/wireshark
![Michael Mann](/assets/img/avatar_default.png)
Similar to the "tcp.port" changes in I99604f95d426ad345f4b494598d94178b886eb67, convert dissectors that use "udp.port". More cleanup done on dissectors that use both TCP and UDP dissector tables, so that less preference callbacks exist. Change-Id: If07be9b9e850c244336a7069599cd554ce312dd3 Reviewed-on: https://code.wireshark.org/review/18120 Petri-Dish: Michael Mann <mmann78@netscape.net> Tested-by: Petri Dish Buildbot <buildbot-no-reply@wireshark.org> Reviewed-by: Michael Mann <mmann78@netscape.net>
590 lines
15 KiB
C
590 lines
15 KiB
C
/* packet-enttec.c
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* Routines for ENTTEC packet disassembly
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*
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* Copyright (c) 2003,2004 by Erwin Rol <erwin@erwinrol.com>
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1999 Gerald Combs
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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/* Include files */
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#include "config.h"
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#include <epan/packet.h>
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#include <epan/prefs.h>
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/*
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* See
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*
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* http://www.enttec.com/docs/enttec_protocol.pdf
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*/
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/* Define UDP/TCP ports for ENTTEC */
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#define UDP_PORT_ENTTEC 0x0D05 /* Not IANA registered */
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#define TCP_PORT_ENTTEC 0x0D05 /* Not IANA registered */
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#define ENTTEC_HEAD_ESPR 0x45535052
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#define ENTTEC_HEAD_ESPP 0x45535050
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#define ENTTEC_HEAD_ESAP 0x45534150
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#define ENTTEC_HEAD_ESDD 0x45534444
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#define ENTTEC_HEAD_ESNC 0x45534E43
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#define ENTTEC_HEAD_ESZZ 0x45535A5A
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static const value_string enttec_head_vals[] = {
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{ ENTTEC_HEAD_ESPR, "Poll Reply" },
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{ ENTTEC_HEAD_ESPP, "Poll" },
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{ ENTTEC_HEAD_ESAP, "Ack/nAck" },
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{ ENTTEC_HEAD_ESDD, "DMX Data" },
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{ ENTTEC_HEAD_ESNC, "Config" },
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{ ENTTEC_HEAD_ESZZ, "Reset" },
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{ 0, NULL }
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};
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#define ENTTEC_DATA_TYPE_DMX 0x01
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#define ENTTEC_DATA_TYPE_CHAN_VAL 0x02
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#define ENTTEC_DATA_TYPE_RLE 0x04
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static const value_string enttec_data_type_vals[] = {
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{ ENTTEC_DATA_TYPE_DMX, "Uncompressed DMX" },
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{ ENTTEC_DATA_TYPE_CHAN_VAL, "Channel+Value" },
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{ ENTTEC_DATA_TYPE_RLE, "RLE Compressed DMX" },
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{ 0, NULL }
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};
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void proto_register_enttec(void);
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void proto_reg_handoff_enttec(void);
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/* Define the enttec proto */
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static int proto_enttec = -1;
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/* general */
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static int hf_enttec_head = -1;
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/* poll */
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static int hf_enttec_poll_type = -1;
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/* poll reply */
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static int hf_enttec_poll_reply_mac = -1;
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static int hf_enttec_poll_reply_node_type = -1;
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static int hf_enttec_poll_reply_version = -1;
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static int hf_enttec_poll_reply_switch = -1;
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static int hf_enttec_poll_reply_name = -1;
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static int hf_enttec_poll_reply_option = -1;
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static int hf_enttec_poll_reply_tos = -1;
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static int hf_enttec_poll_reply_ttl = -1;
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/* dmx data */
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static int hf_enttec_dmx_data_universe = -1;
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static int hf_enttec_dmx_data_start_code = -1;
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static int hf_enttec_dmx_data_type = -1;
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static int hf_enttec_dmx_data_size = -1;
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static int hf_enttec_dmx_data_data = -1;
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static int hf_enttec_dmx_data_data_filter = -1;
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static int hf_enttec_dmx_data_dmx_data = -1;
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/* Define the tree for enttec */
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static int ett_enttec = -1;
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/*
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* Here are the global variables associated with the preferences
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* for enttec
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*/
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static gint global_disp_chan_val_type = 0;
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static gint global_disp_col_count = 16;
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static gint global_disp_chan_nr_type = 0;
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static gint
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dissect_enttec_poll_reply(tvbuff_t *tvb, guint offset, proto_tree *tree)
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{
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proto_tree_add_item(tree, hf_enttec_poll_reply_mac, tvb,
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offset, 6, ENC_NA);
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offset += 6;
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proto_tree_add_item(tree, hf_enttec_poll_reply_node_type, tvb,
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offset, 2, ENC_BIG_ENDIAN);
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offset += 2;
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proto_tree_add_item(tree, hf_enttec_poll_reply_version, tvb,
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offset, 1, ENC_BIG_ENDIAN);
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offset += 1;
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proto_tree_add_item(tree, hf_enttec_poll_reply_switch, tvb,
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offset, 1, ENC_BIG_ENDIAN);
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offset += 1;
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proto_tree_add_item(tree, hf_enttec_poll_reply_name, tvb,
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offset, 10, ENC_ASCII|ENC_NA);
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offset += 10;
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proto_tree_add_item(tree, hf_enttec_poll_reply_option, tvb,
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offset, 1, ENC_BIG_ENDIAN);
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offset += 1;
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proto_tree_add_item(tree, hf_enttec_poll_reply_tos, tvb,
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offset, 1, ENC_BIG_ENDIAN);
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offset += 1;
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proto_tree_add_item(tree, hf_enttec_poll_reply_ttl, tvb,
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offset, 1, ENC_BIG_ENDIAN);
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offset += 1;
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/* data */
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return offset;
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}
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static gint
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dissect_enttec_poll(tvbuff_t *tvb, guint offset, proto_tree *tree)
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{
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proto_tree_add_item(tree, hf_enttec_poll_type, tvb,
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offset, 1, ENC_BIG_ENDIAN);
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offset += 1;
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return offset;
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}
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static gint
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dissect_enttec_ack(tvbuff_t *tvb _U_, guint offset, proto_tree *tree _U_)
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{
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return offset;
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}
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static gint
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dissect_enttec_dmx_data(tvbuff_t *tvb, guint offset, proto_tree *tree)
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{
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static const char* chan_format[] = {
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"%2u ",
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"%02x ",
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"%3u "
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};
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static const char* string_format[] = {
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"%03x: %s",
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"%3u: %s"
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};
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guint8 *dmx_data = (guint8 *)wmem_alloc(wmem_packet_scope(), 512 * sizeof(guint8));
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guint16 *dmx_data_offset = (guint16 *)wmem_alloc(wmem_packet_scope(), 513 * sizeof(guint16)); /* 1 extra for last offset */
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wmem_strbuf_t *dmx_epstr;
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proto_tree *hi,*si;
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proto_item *item;
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guint16 length,r,c,row_count;
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guint8 v,type,count;
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guint16 ci,ui,i,start_offset,end_offset;
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proto_tree_add_item(tree, hf_enttec_dmx_data_universe, tvb,
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offset, 1, ENC_BIG_ENDIAN);
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offset += 1;
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proto_tree_add_item(tree, hf_enttec_dmx_data_start_code, tvb,
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offset, 1, ENC_BIG_ENDIAN);
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offset += 1;
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type = tvb_get_guint8(tvb, offset);
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proto_tree_add_item(tree, hf_enttec_dmx_data_type, tvb,
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offset, 1, ENC_BIG_ENDIAN);
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offset += 1;
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length = tvb_get_ntohs(tvb, offset);
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proto_tree_add_item(tree, hf_enttec_dmx_data_size, tvb,
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offset, 2, ENC_BIG_ENDIAN);
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offset += 2;
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/*
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* XXX - we should handle a too-long length better.
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*/
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if (length > 512)
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length = 512;
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if (type == ENTTEC_DATA_TYPE_RLE) {
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/* uncompress the DMX data */
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ui = 0;
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ci = 0;
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while (ci < length && ui < 512) {
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v = tvb_get_guint8(tvb, offset+ci);
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if (v == 0xFE) {
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ci++;
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count = tvb_get_guint8(tvb, offset+ci);
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ci++;
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v = tvb_get_guint8(tvb, offset+ci);
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ci++;
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for (i=0;i < count && ui < 512;i++) {
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dmx_data[ui] = v;
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dmx_data_offset[ui] = ci-3;
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ui++;
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}
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} else if (v == 0xFD) {
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ci++;
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v = tvb_get_guint8(tvb, offset+ci);
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dmx_data[ui] = v;
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dmx_data_offset[ui] = ci;
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ci++;
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ui++;
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} else {
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dmx_data[ui] = v;
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dmx_data_offset[ui] = ci;
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ui++;
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ci++;
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}
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}
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dmx_data_offset[ui] = ci;
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} else {
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for (ui=0; ui < length;ui++) {
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dmx_data[ui] = tvb_get_guint8(tvb, offset+ui);
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dmx_data_offset[ui] = ui;
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}
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dmx_data_offset[ui] = ui;
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}
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if ((type == ENTTEC_DATA_TYPE_DMX || type == ENTTEC_DATA_TYPE_RLE) && global_disp_col_count > 0) {
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hi = proto_tree_add_item(tree,
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hf_enttec_dmx_data_data,
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tvb,
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offset,
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length,
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ENC_NA);
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si = proto_item_add_subtree(hi, ett_enttec);
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row_count = (ui/global_disp_col_count) + ((ui%global_disp_col_count) == 0 ? 0 : 1);
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dmx_epstr = wmem_strbuf_new_label(wmem_packet_scope());
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for (r=0; r < row_count;r++) {
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for (c=0;(c < global_disp_col_count) && (((r*global_disp_col_count)+c) < ui);c++) {
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if ((global_disp_col_count > 1) && (c % (global_disp_col_count/2)) == 0) {
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wmem_strbuf_append_c(dmx_epstr, ' ');
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}
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v = dmx_data[(r*global_disp_col_count)+c];
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if (global_disp_chan_val_type == 0) {
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v = (v * 100) / 255;
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if (v == 100) {
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wmem_strbuf_append(dmx_epstr, "FL ");
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} else {
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wmem_strbuf_append_printf(dmx_epstr, chan_format[global_disp_chan_val_type], v);
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}
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} else {
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wmem_strbuf_append_printf(dmx_epstr, chan_format[global_disp_chan_val_type], v);
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}
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}
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start_offset = dmx_data_offset[(r*global_disp_col_count)];
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end_offset = dmx_data_offset[(r*global_disp_col_count)+c];
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proto_tree_add_none_format(si,hf_enttec_dmx_data_dmx_data, tvb,
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offset+start_offset,
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end_offset-start_offset,
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string_format[global_disp_chan_nr_type], (r*global_disp_col_count)+1,
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wmem_strbuf_get_str(dmx_epstr));
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wmem_strbuf_truncate(dmx_epstr, 0);
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}
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item = proto_tree_add_item(si, hf_enttec_dmx_data_data_filter, tvb,
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offset, length, ENC_NA );
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PROTO_ITEM_SET_HIDDEN(item);
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offset += length;
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}
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else {
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proto_tree_add_item(tree, hf_enttec_dmx_data_data_filter, tvb,
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offset, length, ENC_NA);
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offset += length;
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}
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return offset;
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}
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static gint
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dissect_enttec_reset(tvbuff_t *tvb _U_, guint offset, proto_tree *tree _U_)
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{
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return offset;
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}
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static int
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dissect_enttec_udp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
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{
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gint offset = 0;
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guint32 head = 0;
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proto_tree *ti, *enttec_tree;
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/*
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* If not enough bytes for the header word, not an ENTTEC packet.
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*/
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if (!tvb_bytes_exist(tvb, offset, 4))
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return 0;
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head = tvb_get_ntohl(tvb, offset);
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switch (head) {
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case ENTTEC_HEAD_ESPR:
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case ENTTEC_HEAD_ESPP:
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case ENTTEC_HEAD_ESAP:
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case ENTTEC_HEAD_ESDD:
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case ENTTEC_HEAD_ESZZ:
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/*
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* Valid packet type.
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*/
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break;
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default:
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/*
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* Not a known DMX-over-UDP packet type, so probably not ENTTEC.
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*/
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return 0;
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}
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/* Set the protocol column */
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col_set_str(pinfo->cinfo, COL_PROTOCOL, "ENTTEC");
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/* Clear out stuff in the info column */
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col_add_fstr(pinfo->cinfo, COL_INFO, "%s",
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val_to_str(head, enttec_head_vals, "Unknown (0x%08x)"));
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ti = proto_tree_add_item(tree, proto_enttec, tvb, offset, -1, ENC_NA);
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enttec_tree = proto_item_add_subtree(ti, ett_enttec);
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proto_tree_add_item(enttec_tree, hf_enttec_head, tvb,
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offset, 4, ENC_BIG_ENDIAN );
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offset += 4;
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switch (head) {
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case ENTTEC_HEAD_ESPR:
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offset = dissect_enttec_poll_reply( tvb, offset, enttec_tree);
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break;
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case ENTTEC_HEAD_ESPP:
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offset = dissect_enttec_poll( tvb, offset, enttec_tree);
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break;
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case ENTTEC_HEAD_ESAP:
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offset = dissect_enttec_ack( tvb, offset, enttec_tree);
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break;
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case ENTTEC_HEAD_ESDD:
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offset = dissect_enttec_dmx_data( tvb, offset, enttec_tree);
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break;
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case ENTTEC_HEAD_ESZZ:
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offset = dissect_enttec_reset( tvb, offset, enttec_tree);
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break;
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}
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return offset;
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}
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static int
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dissect_enttec_tcp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
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{
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gint offset = 0;
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guint32 head = 0;
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proto_tree *ti,*enttec_tree;
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/*
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* If not enough bytes for the header word, don't try to
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* reassemble to get 4 bytes of header word, as we don't
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* know whether this will be an ENTTEC Config packet.
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*/
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if (!tvb_bytes_exist(tvb, offset, 4))
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return 0;
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head = tvb_get_ntohl(tvb, offset);
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if (head != ENTTEC_HEAD_ESNC) {
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/*
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* Not a config packet, so probably not ENTTEC.
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*/
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return 0;
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}
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/* XXX - reassemble to end of connection? */
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/* Set the protocol column */
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col_set_str(pinfo->cinfo, COL_PROTOCOL, "ENTTEC");
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/* Clear out stuff in the info column */
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col_add_fstr(pinfo->cinfo, COL_INFO, "%s",
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val_to_str(head, enttec_head_vals, "Unknown (0x%08x)"));
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ti = proto_tree_add_item(tree, proto_enttec, tvb, offset, -1, ENC_NA);
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enttec_tree = proto_item_add_subtree(ti, ett_enttec);
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proto_tree_add_item(enttec_tree, hf_enttec_head, tvb,
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offset, 4, ENC_BIG_ENDIAN );
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/* XXX - dissect the rest of the packet */
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return tvb_captured_length(tvb);
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}
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void
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proto_register_enttec(void)
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{
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static hf_register_info hf[] = {
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/* General */
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{ &hf_enttec_head,
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{ "Head", "enttec.head",
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FT_UINT32, BASE_HEX, VALS(enttec_head_vals), 0x0,
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NULL, HFILL } },
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{ &hf_enttec_poll_reply_mac,
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{ "MAC", "enttec.poll_reply.mac",
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FT_ETHER, BASE_NONE, NULL, 0x0,
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NULL, HFILL } },
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{ &hf_enttec_poll_reply_node_type,
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{ "Node Type", "enttec.poll_reply.node_type",
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FT_UINT16, BASE_HEX, NULL, 0x0,
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NULL, HFILL } },
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{ &hf_enttec_poll_reply_version,
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{ "Version", "enttec.poll_reply.version",
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FT_UINT8, BASE_DEC, NULL, 0x0,
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NULL, HFILL } },
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{ &hf_enttec_poll_reply_switch,
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{ "Switch settings", "enttec.poll_reply.switch_settings",
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FT_UINT8, BASE_HEX, NULL, 0x0,
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NULL, HFILL } },
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{ &hf_enttec_poll_reply_name,
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{ "Name", "enttec.poll_reply.name",
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FT_STRING, BASE_NONE, NULL, 0x0,
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NULL, HFILL } },
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{ &hf_enttec_poll_reply_option,
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{ "Option Field", "enttec.poll_reply.option_field",
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FT_UINT8, BASE_HEX, NULL, 0x0,
|
|
NULL, HFILL } },
|
|
{ &hf_enttec_poll_reply_tos,
|
|
{ "TOS", "enttec.poll_reply.tos",
|
|
FT_UINT8, BASE_HEX, NULL, 0x0,
|
|
NULL, HFILL } },
|
|
{ &hf_enttec_poll_reply_ttl,
|
|
{ "TTL", "enttec.poll_reply.ttl",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL } },
|
|
{ &hf_enttec_dmx_data_universe,
|
|
{ "Universe", "enttec.dmx_data.universe",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL } },
|
|
{ &hf_enttec_dmx_data_start_code,
|
|
{ "Start Code", "enttec.dmx_data.start_code",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL } },
|
|
{ &hf_enttec_dmx_data_type,
|
|
{ "Data Type", "enttec.dmx_data.type",
|
|
FT_UINT8, BASE_HEX, VALS(enttec_data_type_vals), 0x0,
|
|
NULL, HFILL } },
|
|
{ &hf_enttec_dmx_data_size,
|
|
{ "Data Size", "enttec.dmx_data.size",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL } },
|
|
{ &hf_enttec_dmx_data_data,
|
|
{ "DMX Data", "enttec.dmx_data.data",
|
|
FT_NONE, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL } },
|
|
{ &hf_enttec_dmx_data_data_filter,
|
|
{ "DMX Data", "enttec.dmx_data.data_filter",
|
|
FT_BYTES, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL } },
|
|
{ &hf_enttec_dmx_data_dmx_data,
|
|
{ "DMX Data", "enttec.dmx_data.dmx_data",
|
|
FT_NONE, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL } },
|
|
{ &hf_enttec_poll_type,
|
|
{ "Reply Type", "enttec.poll.reply_type",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL } }
|
|
};
|
|
|
|
static gint *ett[] = {
|
|
&ett_enttec,
|
|
};
|
|
|
|
module_t *enttec_module;
|
|
|
|
static const enum_val_t disp_chan_val_types[] = {
|
|
{ "pro", "Percent", 0 },
|
|
{ "hex", "Hexadecimal", 1 },
|
|
{ "dec", "Decimal", 2 },
|
|
{ NULL, NULL, 0 }
|
|
};
|
|
|
|
static const enum_val_t disp_chan_nr_types[] = {
|
|
{ "hex", "Hexadecimal", 0 },
|
|
{ "dec", "Decimal", 1 },
|
|
{ NULL, NULL, 0 }
|
|
};
|
|
|
|
static const enum_val_t col_count[] = {
|
|
{ "6", "6", 6 },
|
|
{ "10", "10", 10 },
|
|
{ "12", "12", 12 },
|
|
{ "16", "16", 16 },
|
|
{ "24", "24", 24 },
|
|
{ NULL, NULL, 0 }
|
|
};
|
|
|
|
proto_enttec = proto_register_protocol("ENTTEC", "ENTTEC","enttec");
|
|
proto_register_field_array(proto_enttec,hf,array_length(hf));
|
|
proto_register_subtree_array(ett,array_length(ett));
|
|
|
|
enttec_module = prefs_register_protocol(proto_enttec, NULL);
|
|
|
|
prefs_register_enum_preference(enttec_module, "dmx_disp_chan_val_type",
|
|
"DMX Display channel value type",
|
|
"The way DMX values are displayed",
|
|
&global_disp_chan_val_type,
|
|
disp_chan_val_types, FALSE);
|
|
|
|
prefs_register_enum_preference(enttec_module, "dmx_disp_chan_nr_type",
|
|
"DMX Display channel nr. type",
|
|
"The way DMX channel numbers are displayed",
|
|
&global_disp_chan_nr_type,
|
|
disp_chan_nr_types, FALSE);
|
|
|
|
prefs_register_enum_preference(enttec_module, "dmx_disp_col_count",
|
|
"DMX Display Column Count",
|
|
"The number of columns for the DMX display",
|
|
&global_disp_col_count,
|
|
col_count, FALSE);
|
|
}
|
|
|
|
/* The registration hand-off routing */
|
|
void
|
|
proto_reg_handoff_enttec(void) {
|
|
dissector_handle_t enttec_udp_handle, enttec_tcp_handle;
|
|
|
|
enttec_udp_handle = create_dissector_handle(dissect_enttec_udp,proto_enttec);
|
|
enttec_tcp_handle = create_dissector_handle(dissect_enttec_tcp,proto_enttec);
|
|
|
|
dissector_add_uint_with_preference("tcp.port",TCP_PORT_ENTTEC,enttec_tcp_handle);
|
|
dissector_add_uint_with_preference("udp.port",UDP_PORT_ENTTEC,enttec_udp_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:
|
|
*/
|