/* packet-pathport.c * Routines for Pathport Protocol dissection * Copyright 2014, Kevin Loewen * * Wireshark - Network traffic analyzer * By Gerald Combs * 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. */ #include "config.h" #include #include #define PATHPORT_UDP_PORT 3792 /* Not IANA registered */ #define PATHPORT_MIN_LENGTH 24 /* HEADER + 1 PDU */ #define PATHPORT_PROTO_MAGIC 0xed01 #define PATHPORT_HEADER_OFFSET 0 #define PATHPORT_HEADER_SRCID_OFFSET (PATHPORT_HEADER_OFFSET + 12) #define PATHPORT_HEADER_DSTID_OFFSET (PATHPORT_HEADER_OFFSET + 16) #define PATHPORT_HEADER_LENGTH 20 #define PATHPORT_HEADER_END (PATHPORT_HEADER_OFFSET + PATHPORT_HEADER_LENGTH) /** Rounds the specified integer up to the next multiple of four. */ #define roof4(a) (((a)+3)&~3) void proto_reg_handoff_pathport(void); void proto_register_pathport(void); /* Initialize the protocol and registered fields */ static int proto_pathport = -1; /* Initialize the subtree pointers */ static gint ett_pathport = -1; static gint ett_pp_pdu = -1; static gint ett_pp_tlv = -1; static gint ett_pp_data = -1; static int hf_pp_prot = -1; static int hf_pp_reserved = -1; static int hf_pp_version = -1; static int hf_pp_seq = -1; static int hf_pp_src = -1; static int hf_pp_dst = -1; static int hf_pp_data_encoding = -1; static int hf_pp_data_len = -1; static int hf_pp_data_start_code = -1; static int hf_pp_data_dst = -1; static int hf_pp_data_levels = -1; static int hf_pp_arp_id = -1; static int hf_pp_arp_manuf = -1; static int hf_pp_arp_class = -1; static int hf_pp_arp_type = -1; static int hf_pp_arp_numdmx = -1; static int hf_pp_arp_ip = -1; static int hf_pp_get_type = -1; static int hf_pp_pdu_type = -1; static int hf_pp_pdu_len = -1; static int hf_pp_pdu_payload = -1; static int hf_pp_pid_type = -1; static int hf_pp_pid_len = -1; static int hf_pp_pid_value = -1; static int hf_pp_pid_pad_bytes = -1; /* Begin field and constant declarations */ #define PP_ID_BCAST 0xffffffff #define PP_ID_MCAST_ALL 0xefffedff #define PP_ID_MCAST_DATA 0xefffed01 #define PP_ID_MCAST_MANAGE 0xefffed02 /* Top Level PDU Types */ #define PP_ARP_REQUEST 0x0301 #define PP_ARP_REPLY 0x0302 #define PP_ARP_INFO 0x0303 #define PP_GET 0x0222 #define PP_GET_REPLY 0x0223 #define PP_DATA 0x0100 #define PP_SET 0x0400 static const value_string pp_pdu_vals[] = { {PP_ARP_REQUEST, "ARP Request"}, {PP_ARP_REPLY, "ARP Reply"}, {PP_ARP_INFO, "ARP Extend Info"}, {PP_GET, "Get"}, {PP_GET_REPLY, "Get Reply"}, {PP_DATA, "XDMX Data"}, {PP_SET, "Set"}, {0, NULL} }; /* XDMX Data Transport Encodings */ #define PP_DATA_FLAT 0x0101 #define PP_DATA_RELEASE 0x0103 /** Data encoding strings. */ static const value_string pp_data_encoding_vals[] = { {PP_DATA_FLAT, "Flat"}, {PP_DATA_RELEASE, "Release"}, {0, NULL} }; /** ID strings. */ static const value_string ednet_id_vals[] = { {PP_ID_BCAST, "Broadcast"}, {PP_ID_MCAST_ALL, "All"}, {PP_ID_MCAST_DATA, "Data"}, {PP_ID_MCAST_MANAGE, "Manage"}, {0, NULL} }; /* Configuration Property IDs */ #define PP_PAD 0x0000 #define PP_NODE_NAME 0x0401 #define PP_PORT_NAME 0x0411 #define PP_PATCH_NAME 0x0412 #define PP_PORT_SPEED 0x0413 #define PP_IS_BIDIRECTIONAL 0x0414 #define PP_IS_PHYSICAL 0x0415 #define PP_IS_MALE 0x0416 #define PP_IS_SINK 0x0417 #define PP_XDMX_COUNT 0x0418 #define PP_ALT_START_CODE 0x041A #define PP_MAX_PATCHES 0x041B #define PP_NUM_PATCHES 0x041C #define PP_TERMINATED 0x041E #define PP_INPUT_PRIORITY 0x041F #define PP_INPUT_PRIORITY_CHANNEL 0x0420 #define PP_MAC 0x0421 #define PP_IP 0x0422 #define PP_NETMASK 0x0423 #define PP_ROUTER 0x0424 #define PP_PP_ID 0x0461 #define PP_PP_ID_MASK 0x0462 #define PP_PP_TX_DATA_DST 0x0463 #define PP_BACKLIGHT 0x0481 #define PP_SW_VERSION 0x0482 #define PP_HW_TYPE 0x0483 #define PP_LOADER_VERSION 0x0484 #define PP_IDENTIFY 0x0485 #define PP_IRENABLE 0x0486 #define PP_SERIAL 0x0487 #define PP_KEYPAD_LOCKOUT 0x0488 #define PP_ARTNET_RX_ENABLE 0x0489 #define PP_TX_PROTOCOL 0x048a #define PP_SHOWNET_RX_ENABLE 0x048b #define PP_LED_INTENSITY 0x048c #define PP_JUMPER_CONFIGURED 0x048d #define PP_SACN_RX_ENABLE 0x048e #define PP_NET2_RX_ENABLE 0x048f #define PP_PATHPORT_RX_ENABLE 0x0490 #define PP_SACN_IS_DRAFT 0x0491 #define PP_REBOOT 0x04a1 #define PP_BOOTORDER 0x04a2 #define PP_FACTORY_DEFAULT 0x04a4 #define PP_TEST_LCD 0x04c1 #define PP_IS_TERMINAL_BLOCK 0x04c2 #define PP_IS_RACK_MOUNTED 0x04c3 #define PP_IS_ENABLED 0x04c4 #define PP_IS_DMX_ACTIVE 0x04c5 #define PP_IS_XDMX_ACTIVE 0x04c6 #define PP_SIGNAL_LOSS_HOLD_TIME 0x04c7 #define PP_SIGNAL_LOSS_HOLD_FOREVER 0x04c8 #define PP_SIGNAL_LOSS_FADE_ENABLE 0x04c9 #define PP_SIGNAL_LOSS_FADE_TIME 0x04ca #define PP_SIGNAL_LOSS_PORT_SHUTDOWN 0x04cb #define PP_NET2_ADMIN_MCAST 0x04ce #define PP_NET2_DATA_MCAST 0x04cf #define PP_ROOMS_FEATURES 0x04d0 #define PP_UNIVERSE_TEMP 0x04d1 #define PP_CROSSFADE_TIME 0x04d2 #define PP_CROSSFADE_ENABLE 0x04d3 #define PP_IGNORE_INPUT_PRI 0x04d4 #define PP_ARTNET_ALT_MAP 0x04d5 #define PP_PATCH_CRC 0x04d6 #define PP_CONF_CHANGE 0x04d7 #define PP_PORT_ACTIVE_SUMMARY 0x04d8 #define PP_SUPPORTED_UNIV 0x04d9 #define PP_INPUT_HLL_TIME 0x04da #define PP_PCP_ENABLE 0x04db #define PP_INPUT_UNIVERSE 0x04dc #define PP_MODEL_NAME 0x04dd #define PP_MANUF_NAME 0x04de #define PP_VER_STR 0x04df #define PP_SERIAL_STR 0x04e0 #define PP_NODE_NOTES 0x04e1 #define PP_PORT_NOTES 0x04e2 #define PP_USER_NODE_ID 0x04e3 #define PP_MDG_GEN_STATE 0x0601 #define PP_EMBEDDED_ID 0x0602 #define PP_SLAVE_DMX_START 0x0603 #define PP_TB_MODE 0x0605 #define PP_LINK_MODE 0x0701 #define PP_LINK_STATUS 0x0702 #define PP_CONNECTED_COUNT 0x0703 #define PP_POE_STATUS 0x0704 #define PP_POE_EXTERN_WATT 0x0705 #define PP_POE_CURRENT_WATT 0x0706 #define PP_SFP_MODULE_TYPE 0x0707 #define PP_POE_EXTERN_PRESENT 0x0708 #define PP_POE_CAPABLE 0x0709 #define PP_SWITCH_PORT_TYPE 0x070a #define PP_POE_MAX_ALLOC_MW 0x070b #define PP_POE_CURRENT_ALLOC_MW 0x070c #define PP_VLAN_RANGE_START 0x070d #define PP_VLAN_RANGE_END 0x070e #define PP_VLAN_IS_TAGGED 0x070f #define PP_VLAN_PORT_VID 0x0710 #define PP_VLAN_MGMT_VID 0x0711 #define PP_VLAN_ENABLE 0x0712 #define PP_EAPS_MODE 0x0713 #define PP_EAPS_VLAN 0x0714 #define PP_EAPS_PRI_PORT 0x0715 #define PP_EAPS_SEC_PORT 0x0716 #define PP_LLDP_PARTNER_MAC 0x0717 #define PP_LLDP_PARTNER_PORT 0x0718 #define PP_ET_PARAM_1 0x1101 #define PP_END 0xffff /** Property strings. */ static const value_string pp_pid_vals[] = { {PP_PAD, "Pad"}, {PP_NODE_NAME, "Node Name"}, {PP_PORT_NAME, "Port Name"}, {PP_PATCH_NAME, "Patch Name"}, {PP_PORT_SPEED, "Port Speed"}, {PP_IS_BIDIRECTIONAL, "Bi Directional"}, {PP_IS_PHYSICAL, "Physical"}, {PP_IS_MALE, "Is Male"}, {PP_IS_SINK, "Is Sink"}, {PP_XDMX_COUNT, "XDMX Channel Count"}, {PP_ALT_START_CODE, "Alt Start Code List"}, {PP_MAX_PATCHES, "Max # Patches"}, {PP_NUM_PATCHES, "Current # Patches"}, {PP_TERMINATED, "Is Terminated"}, {PP_INPUT_PRIORITY, "Input Priority (Static)"}, {PP_INPUT_PRIORITY_CHANNEL, "Input Priority Channel"}, {PP_MAC, "Ethernet Address"}, {PP_IP, "IP Address"}, {PP_NETMASK, "IP Netmask"}, {PP_ROUTER, "Default Router"}, {PP_PP_ID, "Pathport ID"}, {PP_PP_ID_MASK, "Pathport ID Mask"}, {PP_PP_TX_DATA_DST, "Pathport Data Transmit Offset"}, {PP_BACKLIGHT, "Backlight"}, {PP_SW_VERSION, "Software Version"}, {PP_HW_TYPE, "Hardware Type"}, {PP_LOADER_VERSION, "Loader Version"}, {PP_IDENTIFY, "Identify"}, {PP_IRENABLE, "IR Enable"}, {PP_SERIAL, "Serial Number"}, {PP_KEYPAD_LOCKOUT, "Front Panel Lockout"}, {PP_ARTNET_RX_ENABLE, "ArtNet Rx Enable"}, {PP_TX_PROTOCOL, "Data Tx Proto"}, {PP_SHOWNET_RX_ENABLE, "Shownet Rx Enable"}, /* XXX: PP_LED_INTENSITY ?? */ {PP_JUMPER_CONFIGURED, "Universe Patched By Jumper"}, {PP_SACN_RX_ENABLE, "sACN (E1.31) Rx Enable"}, {PP_NET2_RX_ENABLE, "ETCNet2 Rx Enable"}, {PP_PATHPORT_RX_ENABLE, "xDMX Rx Enable"}, {PP_SACN_IS_DRAFT, "sACN TX is Draft"}, {PP_REBOOT, "Reboot"}, {PP_BOOTORDER, "Boot Order"}, {PP_FACTORY_DEFAULT, "Factory Default"}, {PP_TEST_LCD, "Test LCD"}, /* XXX: PP_IS_TERMINAL_BLOCK ?? */ /* XXX: PP_IS_RACK_MOUNTED ?? */ {PP_IS_ENABLED, "Port Enable"}, {PP_IS_DMX_ACTIVE , "DMX Active"}, {PP_IS_XDMX_ACTIVE , "xDMX Active"}, {PP_SIGNAL_LOSS_HOLD_TIME, "Signal Loss Hold Time (DMX OUT)"}, {PP_SIGNAL_LOSS_HOLD_FOREVER , "Signal Loss Infinite Hold"}, {PP_SIGNAL_LOSS_FADE_ENABLE, "Signal Loss Fade Enable"}, {PP_SIGNAL_LOSS_FADE_TIME, "Signal Loss Fade Time"}, {PP_SIGNAL_LOSS_PORT_SHUTDOWN, "Signal Loss Port Shutdown"}, /* XXX: PP_NET2_ADMIN_MCAST ?? */ /* XXX: PP_NET2_DATA_MCAST ?? */ /* XXX: PP_ROOMS_FEATURES ?? */ {PP_UNIVERSE_TEMP, "xDMX Universe"}, {PP_CROSSFADE_TIME, "Crossfade Time(ms)"}, {PP_CROSSFADE_ENABLE, "Crossfade Enable"}, {PP_IGNORE_INPUT_PRI, "Ignore Input Priority"}, {PP_ARTNET_ALT_MAP, "ArtNet Alternate Univ Mapping"}, {PP_PATCH_CRC, "Output Patch File CRC"}, {PP_CONF_CHANGE, "Config Change Notify"}, {PP_PORT_ACTIVE_SUMMARY, "Port Active Bitmap"}, {PP_SUPPORTED_UNIV, "Number Supported Univ"}, {PP_INPUT_HLL_TIME, "Signal Loss Hold Time (DMX IN)"}, {PP_PCP_ENABLE, "Per Channel Priority Enable"}, {PP_INPUT_UNIVERSE, "Input Universe"}, {PP_MODEL_NAME, "Model Name"}, {PP_MANUF_NAME, "Manufacturer Name"}, {PP_VER_STR, "Firmware Ver (String)"}, {PP_SERIAL_STR, "Serial Number (String)"}, {PP_NODE_NOTES, "Node User Notes"}, {PP_PORT_NOTES, "Port User Notes"}, {PP_USER_NODE_ID, "User Node ID"}, {PP_MDG_GEN_STATE, "MDG Generator Status"}, {PP_EMBEDDED_ID, "Embedded Device ID"}, {PP_SLAVE_DMX_START, "Embedded Device DMX Address"}, {PP_TB_MODE, "RDM Discovery Enable"}, {PP_LINK_MODE, "Ethernet Link Mode"}, {PP_LINK_STATUS, "Ethernet Link Status"}, {PP_CONNECTED_COUNT, "Connected PP Devices"}, {PP_POE_STATUS, "PoE Status"}, {PP_POE_EXTERN_WATT, "PoE External Supply Wattage"}, {PP_POE_CURRENT_WATT, "PoE Current Supply Wattage"}, {PP_SFP_MODULE_TYPE, "SFP Module Type"}, {PP_POE_EXTERN_PRESENT, "PoE External Supply Present"}, {PP_POE_CAPABLE, "PoE Capable Port"}, {PP_SWITCH_PORT_TYPE, "Ethernet Port Type"}, {PP_POE_MAX_ALLOC_MW, "PoE Max Alloc mW"}, {PP_POE_CURRENT_ALLOC_MW, "PoE Current Alloc mW"}, {PP_VLAN_RANGE_START, "VLAN Range Start"}, {PP_VLAN_RANGE_END, "VLAN Range End"}, {PP_VLAN_IS_TAGGED, "VLAN Port is Tagged"}, {PP_VLAN_PORT_VID, "VLAN Port VID"}, {PP_VLAN_MGMT_VID, "VLAN Management VID"}, {PP_VLAN_ENABLE, "VLAN Enable"}, {PP_EAPS_MODE, "EAPS Mode"}, {PP_EAPS_VLAN, "EAPS Control VLAN"}, {PP_EAPS_PRI_PORT, "EAPS Primary Port"}, {PP_EAPS_SEC_PORT, "EAPS Secondary Port"}, {PP_LLDP_PARTNER_MAC, "LLDP Partner MAC"}, {PP_LLDP_PARTNER_PORT, "LLDP Partner Port"}, /* XXX: ET_PARAM ?? */ {PP_END, "End"}, {0, NULL} }; value_string_ext pp_pid_vals_ext = VALUE_STRING_EXT_INIT(pp_pid_vals); /** Unknown type format. */ #define TYPE_UNKNOWN "Unknown (%04x)" /* End Field and enum declarations */ /* Code to actually dissect the packets */ static guint dissect_one_tlv(tvbuff_t *tvb, proto_tree *tree, guint offset) { proto_item *ti; proto_tree *tlv_tree = proto_tree_add_subtree(tree, tvb, offset, 0, ett_pp_tlv, &ti, "Property"); guint len; guint pad_len; guint type = tvb_get_ntohs(tvb, offset); const char *name = val_to_str_ext(type, &pp_pid_vals_ext, TYPE_UNKNOWN); proto_item_append_text(ti, " : %s", name); proto_tree_add_item(tlv_tree, hf_pp_pid_type, tvb, offset, 2, ENC_BIG_ENDIAN); offset += 2; len = tvb_get_ntohs(tvb, offset); proto_item_set_len(ti, 4 + len); proto_tree_add_item(tlv_tree, hf_pp_pid_len, tvb, offset, 2, ENC_BIG_ENDIAN); offset += 2; proto_tree_add_item(tlv_tree, hf_pp_pid_value, tvb, offset, len, ENC_NA); offset += len; pad_len = ~(offset-1) & 3; if(pad_len) { proto_tree_add_item(tlv_tree, hf_pp_pid_pad_bytes, tvb, offset, pad_len, ENC_NA); offset += pad_len; } return offset; } static guint dissect_multiple_tlvs(tvbuff_t *tvb, proto_item *ti, guint offset, guint len) { guint end = offset + len; while(offset < end) { offset = dissect_one_tlv(tvb, ti, offset); } return offset; } static guint dissect_multiple_get_pids(tvbuff_t *tvb, proto_item *tree, guint offset, guint len) { guint end = offset + len; while(offset < end) { proto_tree_add_item(tree, hf_pp_get_type, tvb, offset, 2, ENC_BIG_ENDIAN); offset += 2; } return len; } static guint dissect_data_payload(tvbuff_t *tvb, proto_item *tree, guint offset, guint len) { guint end = offset + len; guint blklen = 0; guint xdmx, stc; while(offset < end) { proto_item *ti; proto_tree *data_tree = proto_tree_add_subtree(tree, tvb, offset, 0, ett_pp_data, &ti, "xDMX Data: "); proto_tree_add_item(data_tree, hf_pp_data_encoding, tvb, offset, 2, ENC_BIG_ENDIAN); offset += 2; blklen = tvb_get_ntohs(tvb, offset); proto_tree_add_item(data_tree, hf_pp_data_len, tvb, offset, 2, ENC_BIG_ENDIAN); offset += 2; proto_tree_add_item(data_tree, hf_pp_reserved, tvb, offset++, 1, ENC_NA); stc = tvb_get_guint8(tvb, offset); proto_tree_add_item(data_tree, hf_pp_data_start_code, tvb, offset++, 1, ENC_BIG_ENDIAN); xdmx = tvb_get_ntohs(tvb, offset); proto_tree_add_item(data_tree, hf_pp_data_dst, tvb, offset, 2, ENC_BIG_ENDIAN); offset += 2; proto_tree_add_item(data_tree, hf_pp_data_levels, tvb, offset, blklen, ENC_NA); proto_item_append_text(ti, "%d Channels at xDMX %d (Univ %d.%d) StartCode: %d ", blklen, xdmx, xdmx / 512 + 1, xdmx % 512, stc); offset += roof4(blklen); } return len; } static guint dissect_arp_reply(tvbuff_t *tvb, proto_tree *tree, guint offset, guint len) { proto_tree_add_item(tree, hf_pp_arp_id, tvb, offset, 4, ENC_BIG_ENDIAN); offset += 4; proto_tree_add_item(tree, hf_pp_arp_ip, tvb, offset, 4, ENC_NA); offset += 4; proto_tree_add_item(tree, hf_pp_arp_manuf, tvb, offset++, 1, ENC_BIG_ENDIAN); proto_tree_add_item(tree, hf_pp_arp_class, tvb, offset++, 1, ENC_BIG_ENDIAN); proto_tree_add_item(tree, hf_pp_arp_type, tvb, offset++, 1, ENC_BIG_ENDIAN); proto_tree_add_item(tree, hf_pp_arp_numdmx, tvb, offset++, 1, ENC_BIG_ENDIAN); return len; } static guint dissect_one_pdu(tvbuff_t *tvb, proto_tree *tree, guint offset) { proto_item *ti; proto_tree *pdu_tree = proto_tree_add_subtree(tree, tvb, offset, 0, ett_pp_pdu, &ti, "PDU"); guint len; guint type = tvb_get_ntohs(tvb, offset); const char *name = val_to_str(type, pp_pdu_vals, TYPE_UNKNOWN); proto_item_append_text(ti, " : %s", name); proto_tree_add_item(pdu_tree, hf_pp_pdu_type, tvb, offset, 2, ENC_BIG_ENDIAN); offset += 2; len = tvb_get_ntohs(tvb, offset); proto_item_set_len(ti, 4 + len); proto_tree_add_item(pdu_tree, hf_pp_pdu_len, tvb, offset, 2, ENC_BIG_ENDIAN); offset += 2; switch(type) { case PP_ARP_REPLY : dissect_arp_reply(tvb, pdu_tree, offset, len); break; case PP_GET : dissect_multiple_get_pids(tvb, pdu_tree, offset, len); break; case PP_SET : case PP_GET_REPLY : case PP_ARP_INFO : dissect_multiple_tlvs(tvb, pdu_tree, offset, len); break; case PP_DATA : dissect_data_payload(tvb, pdu_tree, offset, len); break; default: proto_tree_add_item(pdu_tree, hf_pp_pdu_payload, tvb, offset, len, ENC_NA); break; } offset += roof4(len); return offset; } static guint dissect_multiple_pdus(tvbuff_t *tvb, proto_item *ti, guint offset, guint len) { guint end = offset + len; while(offset < end) { offset = dissect_one_pdu(tvb, ti, offset); } return offset; } static int dissect_header(tvbuff_t *tvb, proto_tree *parent, guint offset) { proto_tree *tree = proto_tree_add_subtree(parent, tvb, offset, PATHPORT_HEADER_LENGTH, ett_pathport, NULL, "Header"); proto_tree_add_item(tree, hf_pp_prot, tvb, offset, 2, ENC_BIG_ENDIAN); offset += 2; proto_tree_add_item(tree, hf_pp_version, tvb, offset, 2, ENC_BIG_ENDIAN); offset += 2; proto_tree_add_item(tree, hf_pp_seq, tvb, offset, 2, ENC_BIG_ENDIAN); offset += 2; proto_tree_add_item(tree, hf_pp_reserved, tvb, offset, 6, ENC_NA); offset += 6; proto_tree_add_item(tree, hf_pp_src, tvb, offset, 4, ENC_BIG_ENDIAN); offset += 4; proto_tree_add_item(tree, hf_pp_dst, tvb, offset, 4, ENC_BIG_ENDIAN); offset += 4; return offset; } static gboolean packet_is_pathport(tvbuff_t *tvb) { if(tvb_captured_length(tvb) < PATHPORT_MIN_LENGTH) return FALSE; if(tvb_get_ntohs(tvb, 0) != PATHPORT_PROTO_MAGIC) return FALSE; /* could also check that the first PDU is in our list of supported PDUs */ return TRUE; } /** Resolves the specified ID to a name. */ static const char * resolve_pp_id(guint32 id) { return val_to_str(id, ednet_id_vals, "%X"); } static int dissect_pathport_common(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) { /* Set up structures needed to add the protocol subtree and manage it */ proto_item *ti; proto_tree *pathport_tree; guint offset = 0; guint remaining_len; guint len; guint16 type; guint32 srcid; guint32 dstid; len = tvb_reported_length(tvb); /* Set the Protocol column to the constant string of Pathport */ col_set_str(pinfo->cinfo, COL_PROTOCOL, "Pathport"); /* Set the info column to reflect the first PDU in the packet */ col_clear(pinfo->cinfo, COL_INFO); srcid = tvb_get_ntohl(tvb, PATHPORT_HEADER_SRCID_OFFSET); type = tvb_get_ntohs(tvb, PATHPORT_HEADER_LENGTH); if(type == PP_ARP_REQUEST) { dstid = tvb_get_ntohl(tvb, PATHPORT_HEADER_DSTID_OFFSET); col_add_fstr(pinfo->cinfo, COL_INFO, "Who has %s? Tell %s", resolve_pp_id(dstid), resolve_pp_id(srcid)); } else { if((type == PP_ARP_REPLY) && (len >= 36)) { guint32 id = tvb_get_ntohl(tvb, 24); col_add_fstr(pinfo->cinfo, COL_INFO, "%s is at %s", resolve_pp_id(id), tvb_ip_to_str(tvb, 28)); } else if((type == PP_DATA) && (len >= 32)) { guint16 xdmx_start = tvb_get_ntohs(tvb, 30); col_add_fstr(pinfo->cinfo, COL_INFO, "xDMX Data - %d channels @ %d (Univ %d.%d)", tvb_get_ntohs(tvb, 26), xdmx_start, xdmx_start / 512 + 1, xdmx_start % 512); } else /* default */ { col_add_fstr(pinfo->cinfo, COL_INFO, "%s", val_to_str(type, pp_pdu_vals, TYPE_UNKNOWN)); } } if(tree == NULL) return tvb_reported_length(tvb); /* create display subtree for the protocol */ ti = proto_tree_add_item(tree, proto_pathport, tvb, 0, -1, ENC_NA); pathport_tree = proto_item_add_subtree(ti, ett_pathport); offset = dissect_header(tvb, pathport_tree, PATHPORT_HEADER_OFFSET); remaining_len = tvb_reported_length_remaining(tvb, offset); offset = dissect_multiple_pdus(tvb, tree, offset, remaining_len); return offset; } static int dissect_pathport(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_) { if(!packet_is_pathport(tvb)) return 0; return dissect_pathport_common(tvb, pinfo, tree); } static gboolean dissect_pathport_heur(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_) { if(!packet_is_pathport(tvb)) return FALSE; dissect_pathport_common(tvb, pinfo, tree); return (TRUE); } /* Register the protocol with Wireshark. */ void proto_register_pathport(void) { static hf_register_info hf[] = { /* Packet Header */ {&hf_pp_prot, {"Protocol", "pathport.prot", FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL }}, {&hf_pp_reserved, {"Reserved", "pathport.resv", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }}, {&hf_pp_version, {"Version", "pathport.version", FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL }}, {&hf_pp_seq, {"Sequence", "pathport.seq", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }}, {&hf_pp_src, {"Source ID", "pathport.src", FT_UINT32, BASE_HEX, NULL, 0x0, NULL, HFILL }}, {&hf_pp_dst, {"Destination ID", "pathport.dst", FT_UINT32, BASE_HEX, NULL, 0x0, NULL, HFILL }}, /* PDU Header */ {&hf_pp_pdu_type, {"PDU", "pathport.pdu", FT_UINT16, BASE_HEX, VALS(pp_pdu_vals), 0x0, NULL, HFILL }}, {&hf_pp_pdu_len, {"Length", "pathport.len", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }}, {&hf_pp_pdu_payload, {"Payload", "pathport.payload", FT_BYTES, 0, NULL, 0x0, NULL, HFILL }}, /* Property structures */ {&hf_pp_get_type, {"Get", "pathport.get.pid", FT_UINT16, BASE_HEX | BASE_EXT_STRING, &pp_pid_vals_ext, 0x0, NULL, HFILL }}, {&hf_pp_pid_type, {"Property", "pathport.pid", FT_UINT16, BASE_HEX | BASE_EXT_STRING, &pp_pid_vals_ext, 0x0, NULL, HFILL }}, {&hf_pp_pid_len, {"Length", "pathport.pid.len", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }}, {&hf_pp_pid_value, {"Value", "pathport.pid.value", FT_BYTES, 0, NULL, 0x0, NULL, HFILL }}, {&hf_pp_pid_pad_bytes, {"Pad bytes", "pathport.pid.pad_bytes", FT_BYTES, 0, NULL, 0x0, NULL, HFILL }}, /* Pathport XDMX Data */ {&hf_pp_data_encoding, {"Data Encoding", "pathport.data.encoding", FT_UINT16, BASE_HEX, VALS(pp_data_encoding_vals), 0x0, NULL, HFILL }}, {&hf_pp_data_start_code, {"DMX Start Code", "pathport.data.startcode", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL }}, {&hf_pp_data_len, {"Data Length", "pathport.data.len", FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL }}, {&hf_pp_data_dst, {"xDMX Destination", "pathport.data.dst", FT_UINT16, BASE_HEX, NULL, 0x0,NULL, HFILL }}, {&hf_pp_data_levels, {"Levels", "pathport.data.levels", FT_NONE, 0, NULL, 0x0, NULL, HFILL }}, /* PP_ARP Reply structures */ {&hf_pp_arp_id, {"ID", "pathport.arp.id", FT_UINT32, BASE_HEX, NULL, 0x0, NULL, HFILL }}, {&hf_pp_arp_manuf, {"Manufacturer", "pathport.arp.manuf", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL }}, {&hf_pp_arp_class, {"Device Class", "pathport.arp.class", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL }}, {&hf_pp_arp_type, {"Device Type", "pathport.arp.type", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL }}, {&hf_pp_arp_numdmx, {"Subcomponents", "pathport.arp.numdmx", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL }}, {&hf_pp_arp_ip, {"IP", "pathport.arp.ip", FT_IPv4, 0, NULL, 0x0, NULL, HFILL }} }; /* Setup protocol subtree array */ static gint *ett[] = { &ett_pathport, &ett_pp_pdu, &ett_pp_tlv, &ett_pp_data }; /* Register the protocol name and description */ proto_pathport = proto_register_protocol("Pathport Protocol", "Pathport", "pathport"); /* Required function calls to register the header fields and subtrees */ proto_register_field_array(proto_pathport, hf, array_length(hf)); proto_register_subtree_array(ett, array_length(ett)); } void proto_reg_handoff_pathport(void) { static dissector_handle_t pathport_handle; pathport_handle = create_dissector_handle(dissect_pathport, proto_pathport); heur_dissector_add("udp", dissect_pathport_heur, "Pathport over UDP", "pathport_udp", proto_pathport, HEURISTIC_ENABLE); dissector_add_uint_with_preference("udp.port", PATHPORT_UDP_PORT, pathport_handle); } /* * Editor modelines - http://www.wireshark.org/tools/modelines.html * * Local variables: * c-basic-offset: 4 * tab-width: 8 * indent-tabs-mode: nil * End: * * vi: set shiftwidth=4 tabstop=8 expandtab: * :indentSize=4:tabSize=8:noTabs=true: */