--- /dev/null
+/* packet-pathport.c
+ * Routines for Pathport Protocol dissection
+ * Copyright 2014, Kevin Loewen <kloewen@pathwayconnect.com>
+ *
+ * $Id$
+ *
+ * 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.
+ */
+
+#include "config.h"
+#include <glib.h>
+#include <epan/packet.h>
+#include <epan/to_str.h>
+
+
+#define PATHPORT_UDP_PORT 3792
+#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;
+
+/* Begin field and enum declarations */
+enum
+{
+ PP_ID_BCAST = 0xffffffff,
+ PP_ID_MCAST_ALL = 0xefffedff,
+ PP_ID_MCAST_DATA = 0xefffed01,
+ PP_ID_MCAST_MANAGE = 0xefffed02
+};
+
+/* Top Level PDU Types */
+enum
+{
+ PP_ARP_REQUEST = 0x0301,
+ PP_ARP_REPLY = 0x0302,
+ PP_ARP_INFO = 0x0303,
+ PP_GET = 0x0222,
+ PP_GET_REPLY = 0x0223,
+ PP_DATA = 0x0100,
+ 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 */
+enum
+{
+ PP_DATA_FLAT = 0x0101,
+ 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 */
+enum
+ {
+ PP_PAD = 0x0000,
+ PP_NODE_NAME = 0x0401,
+ PP_PORT_NAME = 0x0411,
+ PP_PATCH_NAME = 0x0412,
+ PP_PORT_SPEED = 0x0413,
+ PP_IS_BIDIRECTIONAL = 0x0414,
+ PP_IS_PHYSICAL = 0x0415,
+ PP_IS_MALE = 0x0416,
+ PP_IS_SINK = 0x0417,
+ PP_XDMX_COUNT = 0x0418,
+ PP_ALT_START_CODE = 0x041A,
+ PP_MAX_PATCHES = 0x041B,
+ PP_NUM_PATCHES = 0x041C,
+ PP_TERMINATED = 0x041E,
+ PP_INPUT_PRIORITY = 0x041F,
+ PP_INPUT_PRIORITY_CHANNEL = 0x0420,
+ PP_MAC = 0x0421,
+ PP_IP = 0x0422,
+ PP_NETMASK = 0x0423,
+ PP_ROUTER = 0x0424,
+ PP_PP_ID = 0x0461,
+ PP_PP_ID_MASK = 0x0462,
+ PP_PP_TX_DATA_DST = 0x0463,
+ PP_BACKLIGHT = 0x0481,
+ PP_SW_VERSION = 0x0482,
+ PP_HW_TYPE = 0x0483,
+ PP_LOADER_VERSION = 0x0484,
+ PP_IDENTIFY = 0x0485,
+ PP_IRENABLE = 0x0486,
+ PP_SERIAL = 0x0487,
+ PP_KEYPAD_LOCKOUT = 0x0488,
+ PP_ARTNET_RX_ENABLE = 0x0489,
+ PP_TX_PROTOCOL = 0x048a,
+ PP_SHOWNET_RX_ENABLE = 0x048b,
+ PP_LED_INTENSITY = 0x048c,
+ PP_JUMPER_CONFIGURED = 0x048d,
+ PP_SACN_RX_ENABLE = 0x048e,
+ PP_NET2_RX_ENABLE = 0x048f,
+ PP_PATHPORT_RX_ENABLE = 0x0490,
+ PP_SACN_IS_DRAFT = 0x0491,
+ PP_REBOOT = 0x04a1,
+ PP_BOOTORDER = 0x04a2,
+ PP_FACTORY_DEFAULT = 0x04a4,
+ PP_TEST_LCD = 0x04c1,
+ PP_IS_TERMINAL_BLOCK = 0x4c2,
+ PP_IS_RACK_MOUNTED = 0x4c3,
+ PP_IS_ENABLED = 0x4c4,
+ PP_IS_DMX_ACTIVE = 0x4c5,
+ PP_IS_XDMX_ACTIVE = 0x4c6,
+ PP_SIGNAL_LOSS_HOLD_TIME = 0x4c7,
+ PP_SIGNAL_LOSS_HOLD_FOREVER = 0x4c8,
+ PP_SIGNAL_LOSS_FADE_ENABLE = 0x4c9,
+ PP_SIGNAL_LOSS_FADE_TIME = 0x4ca,
+ PP_SIGNAL_LOSS_PORT_SHUTDOWN = 0x4cb,
+ PP_NET2_ADMIN_MCAST = 0x4ce,
+ PP_NET2_DATA_MCAST = 0x4cf,
+ PP_ROOMS_FEATURES = 0x4d0,
+ PP_CROSSFADE_ENABLE = 0x4d3,
+ PP_CROSSFADE_TIME = 0x4d2,
+ PP_IGNORE_INPUT_PRI = 0x4d4,
+ PP_ARTNET_ALT_MAP = 0x4d5,
+ PP_TB_MODE = 0x0605,
+ PP_ET_PARAM_1 = 0x1101,
+ PP_UNIVERSE_TEMP = 0x4d1,
+ PP_PATCH_CRC = 0x4d6,
+ PP_CONF_CHANGE = 0x4d7,
+ PP_PORT_ACTIVE_SUMMARY = 0x4d8,
+ PP_SUPPORTED_UNIV = 0x4d9,
+ PP_INPUT_HLL_TIME = 0x4da,
+ PP_PCP_ENABLE = 0x4db,
+ PP_INPUT_UNIVERSE = 0x4dc,
+ PP_MODEL_NAME = 0x4dd,
+ PP_MANUF_NAME = 0x4de,
+ PP_VER_STR = 0x4df,
+ PP_SERIAL_STR = 0x4e0,
+ PP_NODE_NOTES = 0x4e1,
+ PP_PORT_NOTES = 0x4e2,
+ PP_USER_NODE_ID = 0x4e3,
+ PP_LINK_MODE = 0x0701,
+ PP_LINK_STATUS = 0x0702,
+ PP_CONNECTED_COUNT = 0x703,
+ PP_POE_STATUS = 0x704,
+ PP_POE_EXTERN_WATT = 0x705,
+ PP_POE_CURRENT_WATT = 0x706,
+ PP_SFP_MODULE_TYPE = 0x707,
+ PP_POE_EXTERN_PRESENT = 0x708,
+ PP_POE_CAPABLE = 0x709,
+ PP_SWITCH_PORT_TYPE = 0x70a,
+ PP_POE_MAX_ALLOC_MW = 0x70b,
+ PP_POE_CURRENT_ALLOC_MW = 0x70c,
+ PP_VLAN_RANGE_START = 0x70d,
+ PP_VLAN_RANGE_END = 0x70e,
+ PP_VLAN_IS_TAGGED = 0x70f,
+ PP_VLAN_PORT_VID = 0x710,
+ PP_VLAN_MGMT_VID = 0x711,
+ PP_VLAN_ENABLE = 0x712,
+ PP_EAPS_MODE = 0x713,
+ PP_EAPS_VLAN = 0x714,
+ PP_EAPS_PRI_PORT = 0x715,
+ PP_EAPS_SEC_PORT = 0x716,
+ PP_LLDP_PARTNER_MAC = 0x717,
+ PP_LLDP_PARTNER_PORT = 0x718,
+ PP_MDG_GEN_STATE = 0x0601,
+ PP_EMBEDDED_ID = 0x0602,
+ PP_SLAVE_DMX_START = 0x0603,
+ 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"},
+ {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"},
+ {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"},
+ {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 Priorty 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"},
+ {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_add_text(tree, tvb, offset, 0, "Property");
+ proto_tree* tlv_tree = proto_item_add_subtree(ti, ett_pp_tlv);
+
+ 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_NA);
+ 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_NA);
+ 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_text(tlv_tree, tvb, offset, pad_len, "%d %s", pad_len, pad_len > 1 ? "pad bytes" : "pad byte");
+ 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_NA);
+ 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_add_text(tree, tvb, offset, 0, "xDMX Data: ");
+ proto_tree* data_tree = proto_item_add_subtree(ti, ett_pp_data);
+ proto_tree_add_item(data_tree, hf_pp_data_encoding, tvb, offset, 2, ENC_NA);
+ offset += 2;
+ blklen = tvb_get_ntohs(tvb, offset);
+ proto_tree_add_item(data_tree, hf_pp_data_len, tvb, offset, 2, ENC_NA);
+ 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_NA);
+ xdmx = tvb_get_ntohs(tvb, offset);
+ proto_tree_add_item(data_tree, hf_pp_data_dst, tvb, offset, 2, ENC_NA);
+ 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_NA);
+ 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_NA);
+ proto_tree_add_item(tree, hf_pp_arp_class, tvb, offset++, 1, ENC_NA);
+ proto_tree_add_item(tree, hf_pp_arp_type, tvb, offset++, 1, ENC_NA);
+ proto_tree_add_item(tree, hf_pp_arp_numdmx, tvb, offset++, 1, ENC_NA);
+ return len;
+}
+
+static guint
+dissect_one_pdu(tvbuff_t* tvb, proto_tree* tree, guint offset)
+{
+ proto_item* ti = proto_tree_add_text(tree, tvb, offset, 0, "PDU");
+ proto_tree* pdu_tree = proto_item_add_subtree(ti, ett_pp_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_NA);
+ 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_NA);
+ 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_item* ti = proto_tree_add_item(parent, proto_pathport, tvb, offset, PATHPORT_HEADER_LENGTH, ENC_NA);
+ proto_tree* tree = proto_item_add_subtree(ti, ett_pathport);
+ proto_item_set_text(ti, "Header");
+
+ proto_tree_add_item(tree, hf_pp_prot, tvb, offset, 2, ENC_NA);
+ offset += 2;
+ proto_tree_add_item(tree, hf_pp_version, tvb, offset, 2, ENC_NA);
+ offset += 2;
+ proto_tree_add_item(tree, hf_pp_seq, tvb, offset, 2, ENC_NA);
+ 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_NA);
+ offset += 4;
+ proto_tree_add_item(tree, hf_pp_dst, tvb, offset, 4, ENC_NA);
+ offset += 4;
+ return offset;
+}
+
+static gboolean
+packet_is_pathport(tvbuff_t *tvb)
+{
+ if (tvb_length(tvb) < PATHPORT_MIN_LENGTH)
+ return FALSE;
+
+ if (tvb_get_ntohs(tvb, 0) != PATHPORT_PROTO_MAGIC)
+ return 0;
+ /* 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 = 0;
+ guint16 type;
+ guint32 srcid;
+ guint32 dstid;
+
+ len = tvb_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_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_length(tvb) - PATHPORT_HEADER_LENGTH;
+ 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 0;
+
+ dissect_pathport_common(tvb, pinfo, tree);
+ return (TRUE);
+}
+
+/* Register the protocol with Wireshark.
+ *
+ * This format is require because a script is used to build the C function that
+ * calls all the protocol registration.
+ */
+void
+proto_register_pathport(void)
+{
+ static hf_register_info hf[] = {
+/* Packet Header */
+ {&hf_pp_prot, {"Protocol", "pathport.prot", FT_UINT16, BASE_HEX, NULL, 0x0, "", HFILL }},
+ {&hf_pp_reserved, {"Reserved", "pathport.resv", FT_BYTES, BASE_NONE, NULL, 0x0, "", HFILL }},
+ {&hf_pp_version, {"Version", "pathport.version", FT_UINT16, BASE_HEX, NULL, 0x0, "", HFILL }},
+ {&hf_pp_seq, {"Sequence", "pathport.seq", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL }},
+ {&hf_pp_src, {"Source ID", "pathport.src", FT_UINT32, BASE_HEX, NULL, 0x0, "", HFILL }},
+ {&hf_pp_dst, {"Destination ID", "pathport.dst", FT_UINT32, BASE_HEX, NULL, 0x0, "", HFILL }},
+
+/* PDU Header */
+ {&hf_pp_pdu_type, {"PDU", "pathport.pdu", FT_UINT16, BASE_HEX, VALS(pp_pdu_vals), 0x0, "", HFILL }},
+ {&hf_pp_pdu_len, {"Length", "pathport.len", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL }},
+ {&hf_pp_pdu_payload, {"Payload", "pathport.payload", FT_BYTES, 0, NULL, 0x0, "", HFILL }},
+
+/* Property structures */
+ {&hf_pp_get_type, {"Get", "pathport.get.pid", FT_UINT16, BASE_HEX | BASE_EXT_STRING, &pp_pid_vals_ext, 0x0, "", HFILL }},
+ {&hf_pp_pid_type, {"Property", "pathport.pid", FT_UINT16, BASE_HEX | BASE_EXT_STRING, &pp_pid_vals_ext, 0x0, "", HFILL }},
+ {&hf_pp_pid_len, {"Length", "pathport.pid.len", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL }},
+ {&hf_pp_pid_value, {"Value", "pathport.pid.value", FT_BYTES, 0, NULL, 0x0, "", HFILL }},
+
+/* Pathport XDMX Data */
+ {&hf_pp_data_encoding, {"Data Encoding", "pathport.data.encoding", FT_UINT16, BASE_HEX, VALS(pp_data_encoding_vals), 0x0, "", HFILL }},
+ {&hf_pp_data_start_code, {"DMX Start Code", "pathport.data.startcode", FT_UINT8, BASE_HEX, NULL, 0x0, "", HFILL }},
+ {&hf_pp_data_len, {"Data Length", "pathport.data.len", FT_UINT16, BASE_HEX, NULL, 0x0, "", HFILL }},
+ {&hf_pp_data_dst, {"xDMX Destination", "pathport.data.dst", FT_UINT16, BASE_HEX, NULL, 0x0,"", HFILL }},
+ {&hf_pp_data_levels, {"Levels", "pathport.data.levels", FT_NONE, 0, NULL, 0x0, "", HFILL }},
+
+/* PP_ARP Reply structures */
+ {&hf_pp_arp_id, {"ID", "pathport.arp.id", FT_UINT32, BASE_HEX, NULL, 0x0, "", HFILL }},
+ {&hf_pp_arp_manuf, {"Manufacturer", "pathport.arp.manuf", FT_UINT8, BASE_HEX, NULL, 0x0, "", HFILL }},
+ {&hf_pp_arp_class, {"Device Class", "pathport.arp.class", FT_UINT8, BASE_HEX, NULL, 0x0, "", HFILL }},
+ {&hf_pp_arp_type, {"Device Type", "pathport.arp.type", FT_UINT8, BASE_HEX, NULL, 0x0, "", HFILL }},
+ {&hf_pp_arp_numdmx, {"Subcomponents", "pathport.arp.numdmx", FT_UINT8, BASE_HEX, NULL, 0x0, "", HFILL }},
+ {&hf_pp_arp_ip, {"IP", "pathport.arp.ip", FT_IPv4, 0, NULL, 0x0, "", 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 = new_create_dissector_handle(dissect_pathport, proto_pathport);
+ heur_dissector_add("udp", dissect_pathport_heur, proto_pathport);
+ dissector_add_uint("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:
+ */
git.samba.org / metze / wireshark / wip.git / commitdiff