diff options
Diffstat (limited to 'epan/dissectors/packet-elcom.c')
| -rw-r--r-- | epan/dissectors/packet-elcom.c | 766 |
1 files changed, 766 insertions, 0 deletions
diff --git a/epan/dissectors/packet-elcom.c b/epan/dissectors/packet-elcom.c new file mode 100644 index 00000000..790548a9 --- /dev/null +++ b/epan/dissectors/packet-elcom.c @@ -0,0 +1,766 @@ +/* packet-elcom.c + * Routines for elcom packet dissection + * Copyright 2008, 2011 juha.takala@iki.fi (Juha Takala) + * + * Wireshark - Network traffic analyzer + * By Gerald Combs <gerald@wireshark.org> + * Copyright 1998 Gerald Combs + * + * Copied from packet-imap.c + * + * SPDX-License-Identifier: GPL-2.0-or-later + * + * I found the protocol specification at + * http://www.sintef.no/upload/Energiforskning/Energisystemer/ELCOM%2090.pdf + */ + +#include "config.h" + +#include <epan/packet.h> + +#define TCP_PORT_ELCOM 5997 /* Not IANA registered */ + +/* Application level: */ +#define A_CONRQ 0x04 +#define A_CONRS 0x05 + +/* Presentation level: */ +#define P_CONRQ 0x00 +#define P_CONRS 0x10 +#define P_RELRQ 0x20 +#define P_RELRS 0x30 +#define P_DATRQ 0x80 + +#define TC_REQ 0x40 +#define TC_RSP 0x41 + +#define LOWADR_LEN 17 +#define SUFFIX_LEN 2 +#define TOTAL_LEN (LOWADR_LEN + SUFFIX_LEN + 2) + +#if 0 /* ??? */ +#define ELCOM_UNKNOWN_ENDIAN 0 +#define ELCOM_LITTLE_ENDIAN 1 +#define ELCOM_BIG_ENDIAN 2 +#endif + +void proto_register_elcom(void); +void proto_reg_handoff_elcom(void); + +static dissector_handle_t elcom_handle; + +static int proto_elcom = -1; +static int hf_elcom_response = -1; +static int hf_elcom_request = -1; + +static int hf_elcom_length = -1; +static int hf_elcom_type = -1; + +static int hf_elcom_initiator = -1; +static int hf_elcom_initiator_endian = -1; +static int hf_elcom_initiator_ip = -1; +static int hf_elcom_initiator_port = -1; +static int hf_elcom_initiator_suff = -1; + +static int hf_elcom_responder = -1; +static int hf_elcom_responder_endian = -1; +static int hf_elcom_responder_ip = -1; +static int hf_elcom_responder_port = -1; +static int hf_elcom_responder_suff = -1; + +static int hf_elcom_userdata = -1; +static int hf_elcom_userdata_length = -1; +static int hf_elcom_userdata_pduid = -1; +static int hf_elcom_userdata_version = -1; +static int hf_elcom_userdata_result = -1; +static int hf_elcom_userdata_restmark = -1; +static int hf_elcom_userdata_cf = -1; + +static int hf_elcom_datarequest = -1; +static int hf_elcom_datarequest_grouptype = -1; +static int hf_elcom_datarequest_result = -1; +static int hf_elcom_datarequest_groupnumber = -1; +static int hf_elcom_datarequest_grouppriority = -1; +static int hf_elcom_datarequest_groupsize = -1; +static int hf_elcom_datarequest_groupindex1 = -1; +static int hf_elcom_datarequest_groupindex2 = -1; +static int hf_elcom_datarequest_oid = -1; + +static int hf_elcom_release_reason = -1; +static int hf_elcom_release_result = -1; + +static int hf_elcom_strangeleftover = -1; + +static gint ett_elcom = -1; +static gint ett_elcom_initiator = -1; +static gint ett_elcom_responder = -1; +static gint ett_elcom_userdata = -1; +static gint ett_elcom_datarequest = -1; + +static gboolean elcom_show_hex = TRUE; + +static const value_string endian_vals[] = { + {0x0002, "Big"}, + {0x0200, "Little"}, + {0, NULL } +}; + +static const value_string suffix_vals[] = { + {'A', "Control"}, + {'B', "Unsolicited"}, + {'C', "Periodic"}, + {'D', "Requested, scheduling"}, + {'E', "Requested, present/archived"}, + {'G', "Supervisory"}, + {'F', "Test"}, + {0, NULL } +}; + +static const value_string userdata_pduid_vals[] = { + {0x04, "Connect Request"}, + {0x05, "Connect Response"}, + {0, NULL } +}; + +static const value_string userdata_version_vals[] = { + {0x00, "Class 0, v0"}, + {0x01, "Class 1, v0"}, + {0x02, "Class 2, v0"}, + {0x12, "Class 2, v1"}, + {0x13, "Class 3, v1"}, + {0, NULL } +}; + +static const value_string userdata_result_vals[] = { + {0x00, "OK"}, + {0, NULL } +}; + +static const value_string datarequest_grouptype_vals[] = { + {TC_REQ, "Test Connection Request"}, + {TC_RSP, "Test Connection Response"}, + {0, NULL } +}; + +static const value_string datarequest_result_vals[] = { + {0x00, "OK"}, + {0, NULL } +}; + +static const value_string type_vals[] = { + {P_CONRQ, "Connect Request"}, + {P_CONRS, "Connect Response"}, + {P_RELRQ, "Release Request"}, + {P_RELRS, "Release Response"}, + {P_DATRQ, "Data Request"}, + {0, NULL } +}; + +static gint +dissect_lower_address(proto_item *ti_arg, gint ett_arg, + tvbuff_t *tvb, gint arg_offset, + int hf_endian, int hf_ip, int hf_port, int hf_suff) +{ + gint offset = arg_offset; + guint8 len1, len2; + guint8 *suffix; + proto_tree *tree; + proto_item *ti; + + tree = proto_item_add_subtree(ti_arg, ett_arg); + + /* + * Coding of address: + * ELCOM-90 TRA3825.02 User Element conventions, p. 5-2 and Appendix G + */ + len1 = tvb_get_guint8(tvb, offset); + if (tvb_captured_length_remaining(tvb, offset+len1+1) <= 0) + return offset; + len2 = tvb_get_guint8(tvb, offset+len1+1); + if (tvb_reported_length_remaining(tvb, offset+len1+len2+2) <= 0) + return offset; + if ((len1 != LOWADR_LEN) || (len2 != SUFFIX_LEN)) { + proto_item_append_text(tree, " Invalid structure"); + return offset; + } + + + /* Show pre stuff */ + if (0x82 != tvb_get_guint8(tvb, offset+1)) { + proto_item_append_text(tree, " Not IPV4 address"); + return offset; + } + offset += 2; + + + /* endian */ + proto_tree_add_item(tree, hf_endian, tvb, offset, 2, ENC_BIG_ENDIAN); + offset += 2; + + /* port */ + proto_tree_add_item(tree, hf_port, tvb, offset, 2, ENC_BIG_ENDIAN); + offset += 2; + + /* ip-addr */ + proto_tree_add_item(tree, hf_ip, tvb, offset, 4, ENC_BIG_ENDIAN); + offset += 4; + + offset += 8; /* skip the zero bytes */ + + /* SUFFIX */ + suffix = tvb_get_string_enc(wmem_packet_scope(), tvb, offset+1, len2, ENC_ASCII); + /* hf_suff FIELDTYPE must be FT_UINT_STRING */ + ti = proto_tree_add_item(tree, hf_suff, tvb, offset, 1, ENC_ASCII|ENC_BIG_ENDIAN); + offset += len2+1; + + if (!(suffix[0] == 'A' || suffix[0] == 'B')) { + proto_item_append_text(ti, " (invalid)"); + return offset; + } + + proto_item_append_text(ti, " (%s)", val_to_str_const(suffix[1], suffix_vals, "<<-- WHAT?") ); + return offset; +} + +static gint +dissect_userdata(proto_item *ti_arg, gint ett_arg, tvbuff_t *tvb, gint arg_offset) +{ + gint offset = arg_offset; + guint8 flen, lenbytes; + guint8 year, month, day, hour, min, sec; + guint16 msec; + proto_tree *tree; + proto_item *ti; + + tree = proto_item_add_subtree(ti_arg, ett_arg); + + /* length of User Data, should be 1 byte field ... */ + flen = tvb_get_guint8(tvb, offset); + lenbytes = 1; + + /* ... but sometimes it seems to be 2 bytes; try to be clever */ + if (flen == 0) { + flen = tvb_get_guint8(tvb, offset+1); + lenbytes = 2; + } + if (flen == 0 || flen > 79) /* invalid */ + return offset; + + ti = proto_tree_add_item(tree, hf_elcom_userdata_length, tvb, offset, lenbytes, ENC_BIG_ENDIAN); + offset += lenbytes; + if (lenbytes == 2) { + proto_item_append_text(ti, " (2 bytes, should be 1 byte)"); + } + + if (tvb_reported_length_remaining(tvb, offset) <= 0) + return offset; + + proto_tree_add_item(tree, hf_elcom_userdata_pduid, tvb, offset, 1, ENC_BIG_ENDIAN); + offset++; + + if (tvb_reported_length_remaining(tvb, offset) <= 0) + return offset; + + proto_tree_add_item(tree, hf_elcom_userdata_version, tvb, offset, 1, ENC_BIG_ENDIAN); + offset++; + + + if (tvb_reported_length_remaining(tvb, offset) <= 0) + return offset; + + proto_tree_add_item(tree, hf_elcom_userdata_result, tvb, offset, 1, ENC_BIG_ENDIAN); + offset++; + + /* show the rest */ + /* tree2 = proto_tree_add_subtree(tree, tvb, offset, -1, "User Data"); */ + + if (tvb_reported_length_remaining(tvb, offset) <= 0) + return offset; + ti = proto_tree_add_item(tree, hf_elcom_userdata_restmark, tvb, offset, 1, ENC_BIG_ENDIAN); + proto_item_append_text(ti, " <-- '0' = no restart etc."); + offset +=1; + + if (tvb_reported_length_remaining(tvb, offset+8) <= 0) + return offset; + year = tvb_get_guint8(tvb, offset); + month = tvb_get_guint8(tvb, offset+1); + day = tvb_get_guint8(tvb, offset+2); + hour = tvb_get_guint8(tvb, offset+3); + min = tvb_get_guint8(tvb, offset+4); + sec = tvb_get_guint8(tvb, offset+5); + msec = tvb_get_ntohs(tvb, offset+6); + + proto_tree_add_none_format(tree, hf_elcom_userdata_cf, tvb, offset, 8, + "Control Field: %4d-%02d-%02d %02d:%02d:%02d.%d", + year+1900, month, day, hour, min, sec, msec); + + offset += 12; + if (tvb_reported_length_remaining(tvb, offset+12) > 0) { + proto_item_append_text(ti, " Security info: "); + } + /* security info field, if present */ + while (tvb_reported_length_remaining(tvb, offset) > 0) { + proto_item_append_text(ti, elcom_show_hex ? " %02x" : " %03o", + tvb_get_guint8(tvb, offset)); + offset++; + } + + return offset; +} + +static gint +dissect_datarequest(proto_item *ti_arg, gint ett_arg, tvbuff_t *tvb, gint arg_offset) +{ + gint offset = arg_offset; + guint8 gtype, oidlen; + proto_tree *tree; + proto_item *ti; + + tree = proto_item_add_subtree(ti_arg, ett_arg); + if (tvb_reported_length_remaining(tvb, offset) <= 0) + return offset; + + gtype = tvb_get_guint8(tvb, offset); + ti = proto_tree_add_item(tree, hf_elcom_datarequest_grouptype, + tvb, offset, 1, ENC_BIG_ENDIAN); + offset += 1; + + switch (gtype) { + + case TC_REQ: + /* No more data for this type, suppress the error message */ + break; + + case TC_RSP: + + proto_tree_add_item(tree, hf_elcom_datarequest_result, + tvb, offset, 1, ENC_BIG_ENDIAN); + offset++; + + break; + + default: + proto_item_append_text(ti, " <<--- meaning WHAT?"); + return offset; + } + if (tvb_reported_length_remaining(tvb, offset) <= 0) + return offset; + + proto_tree_add_item(tree, hf_elcom_datarequest_groupnumber, tvb, offset, 1, ENC_BIG_ENDIAN); + offset += 1; + if (tvb_reported_length_remaining(tvb, offset) <= 0) + return offset; + + proto_tree_add_item(tree, hf_elcom_datarequest_grouppriority, tvb, offset, 1, ENC_BIG_ENDIAN); + offset += 1; + if (tvb_reported_length_remaining(tvb, offset) <= 0) + return offset; + + proto_tree_add_item(tree, hf_elcom_datarequest_groupsize, tvb, offset, 1, ENC_BIG_ENDIAN); + offset += 1; + if (tvb_reported_length_remaining(tvb, offset) <= 0) + return offset; + + proto_tree_add_item(tree, hf_elcom_datarequest_groupindex1, tvb, offset, 2, ENC_BIG_ENDIAN); + offset += 2; + if (tvb_reported_length_remaining(tvb, offset) <= 0) + return offset; + + proto_tree_add_item(tree, hf_elcom_datarequest_groupindex2, tvb, offset, 2, ENC_BIG_ENDIAN); + offset += 2; + if (tvb_reported_length_remaining(tvb, offset) <= 0) + return offset; + + while (1) { + oidlen = tvb_get_guint8(tvb, offset); + if (oidlen == 0) /* normal termination */ + break; + if (tvb_reported_length_remaining(tvb, offset+oidlen+1) <= 0) + return offset; + proto_tree_add_item(tree, hf_elcom_datarequest_oid, tvb, offset, 1, ENC_ASCII|ENC_BIG_ENDIAN); + offset += oidlen+1; + } + offset += 1; /* the loop exited at the 0 length byte */ + if (tvb_reported_length_remaining(tvb, offset) <= 0) + return offset; + + /* show the rest */ + proto_tree_add_item(tree, hf_elcom_strangeleftover, tvb, offset, -1, ENC_NA); + return offset; +} + +/* XXX: Are all the tests against tvb_reported_length() really the right way to handle invalid fields ? + * It seems to me that invalid fields should just add an expert item + * or cause a "Malformed" exception. + */ +static int +dissect_elcom(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_) +{ + gboolean is_request, length_ok; + proto_tree *elcom_tree; + proto_item *ti, *hidden_item; + gint offset = 0; + guint elcom_len; + guint8 elcom_msg_type; + guint8 *suffix; + + /* Check that there's enough data */ + if (tvb_captured_length(tvb) < 3) + return 0; + + col_set_str(pinfo->cinfo, COL_PROTOCOL, "ELCOM"); + col_clear(pinfo->cinfo, COL_INFO); + + is_request = (pinfo->match_uint == pinfo->destport); + elcom_len = tvb_get_ntohs(tvb, 0); + length_ok = (tvb_reported_length(tvb) == (elcom_len+2)); + + col_add_fstr(pinfo->cinfo, COL_INFO, "%s Len=%d%s", + is_request ? "Request" : "Response", + elcom_len, + length_ok ? "" : " (incorrect)"); + + elcom_msg_type = tvb_get_guint8(tvb, 2); + switch (elcom_msg_type) { + case P_CONRQ: + case P_CONRS: + + /* starting after elcom_len and elcom_msg_type, + initiator + responder + userdata fields must be there */ + if (tvb_captured_length_remaining(tvb, 3+TOTAL_LEN+TOTAL_LEN+3) < 0) return 2; + /* check also that those field lengths are valid */ + if (tvb_get_guint8(tvb, 3) != LOWADR_LEN) return 2; + if (tvb_get_guint8(tvb, 3+1+LOWADR_LEN) != SUFFIX_LEN) return 2; + if (tvb_get_guint8(tvb, 3+TOTAL_LEN) != LOWADR_LEN) return 2; + if (tvb_get_guint8(tvb, 3+1+TOTAL_LEN+LOWADR_LEN) != SUFFIX_LEN) return 2; + + /* finally believe that there is valid suffix */ + suffix = tvb_get_string_enc(wmem_packet_scope(), tvb, 3+2+LOWADR_LEN, 2, ENC_ASCII); + col_append_fstr(pinfo->cinfo, COL_INFO, " %s Connect", suffix); + break; + + case P_RELRQ: + case P_RELRS: + col_append_str(pinfo->cinfo, COL_INFO, " Release"); + break; + + case P_DATRQ: + col_append_str(pinfo->cinfo, COL_INFO, " Data"); + break; + } + + switch (elcom_msg_type) { + case P_CONRQ: + case P_RELRQ: + col_append_str(pinfo->cinfo, COL_INFO, " Request"); + break; + + case P_CONRS: + case P_RELRS: + col_append_str(pinfo->cinfo, COL_INFO, " Response"); + break; + } + + if (!tree) + return tvb_captured_length(tvb); + + ti = proto_tree_add_item(tree, proto_elcom, tvb, offset, -1, ENC_NA); + elcom_tree = proto_item_add_subtree(ti, ett_elcom); + + hidden_item = proto_tree_add_boolean(elcom_tree, + is_request ? hf_elcom_request : hf_elcom_response, + tvb, 0, 0, TRUE); + proto_item_set_hidden(hidden_item); + + /* 2 first bytes are the frame length */ + offset = 0; + ti = proto_tree_add_item(elcom_tree, hf_elcom_length, tvb, offset, 2, ENC_BIG_ENDIAN); + offset = +2; + if (! length_ok) { + proto_item_append_text(ti, " (incorrect)"); + } + + elcom_msg_type = tvb_get_guint8(tvb, offset); + ti = proto_tree_add_item(elcom_tree, hf_elcom_type, tvb, offset, 1, ENC_BIG_ENDIAN); + proto_item_append_text(elcom_tree, " ( %s)", val_to_str(elcom_msg_type, type_vals, "Unknown %d")); + + offset++; + if (tvb_reported_length_remaining(tvb, offset) <= 0) + return offset; + + switch (elcom_msg_type) { + case P_CONRQ: + case P_CONRS: + /* + * Connection request/release assiciated PDU's, + * /ELCOM-90 P Protocol spec/ p. 85... + */ + + /* We need the length here, hardcode the LOWADR_LEN = 21 */ + ti = proto_tree_add_item(elcom_tree, hf_elcom_initiator, tvb, offset, TOTAL_LEN, ENC_NA); + offset = dissect_lower_address(ti, ett_elcom_initiator, tvb, offset, + hf_elcom_initiator_endian, + hf_elcom_initiator_ip, + hf_elcom_initiator_port, + hf_elcom_initiator_suff); + if (tvb_reported_length_remaining(tvb, offset) <= 0) + return offset; + + ti = proto_tree_add_item(elcom_tree, hf_elcom_responder, tvb, offset, TOTAL_LEN, ENC_NA); + offset = dissect_lower_address(ti, ett_elcom_responder, tvb, offset, + hf_elcom_responder_endian, + hf_elcom_responder_ip, + hf_elcom_responder_port, + hf_elcom_responder_suff); + if (tvb_reported_length_remaining(tvb, offset) <= 0) + return offset; + + /* Rest of the payload is USER-DATA, 0..82 bytes */ + ti = proto_tree_add_item(elcom_tree, hf_elcom_userdata, tvb, offset, -1, ENC_NA); + offset = dissect_userdata(ti, ett_elcom_userdata, tvb, offset); + + break; + + case P_RELRQ: + + proto_tree_add_item(elcom_tree, hf_elcom_release_reason, tvb, offset, 1, ENC_BIG_ENDIAN); + offset += 1; + + break; + case P_RELRS: + + proto_tree_add_item(elcom_tree, hf_elcom_release_result, tvb, offset, 1, ENC_BIG_ENDIAN); + + offset += 1; + + break; + + case P_DATRQ: + ti = proto_tree_add_item(elcom_tree, hf_elcom_datarequest, tvb, offset, -1, ENC_NA); + offset = dissect_datarequest(ti, ett_elcom_datarequest, tvb, offset); + break; + + default: + proto_item_append_text(ti, " <<--- meaning WHAT??"); + break; + } + + if (tvb_reported_length_remaining(tvb, offset) > 0) + { + /* We should not get here, but if we do, show what is left over: */ + proto_tree_add_item(elcom_tree, hf_elcom_strangeleftover, tvb, offset, -1, ENC_NA); + } + return tvb_captured_length(tvb); +} + +void +proto_register_elcom(void) +{ + /* Setup list of header fields See Section 1.6.1 for details*/ + static hf_register_info hf[] = { + { &hf_elcom_response, + { "Response", "elcom.response", + FT_BOOLEAN, BASE_NONE, NULL, 0, NULL, HFILL } + }, + + { &hf_elcom_request, + { "Request", "elcom.request", + FT_BOOLEAN, BASE_NONE, NULL, 0, NULL, HFILL } + }, + + { &hf_elcom_length, + { "Length", "elcom.length", + FT_UINT16, BASE_DEC, NULL, 0, NULL, HFILL } + }, + + { &hf_elcom_type, + { "Type", "elcom.type", + FT_UINT8, BASE_HEX, VALS(type_vals), 0, NULL, HFILL } + }, + + { &hf_elcom_initiator, + { "Initiator", "elcom.initiator", + FT_NONE, BASE_NONE, NULL, 0, NULL, HFILL } + }, + + { &hf_elcom_initiator_endian, + { "Endian", "elcom.initiator.endian", + FT_UINT16, BASE_HEX, VALS(endian_vals), 0, NULL, HFILL } + }, + + { &hf_elcom_initiator_ip, + { "IP", "elcom.initiator.ip", + FT_IPv4, BASE_NONE, NULL, 0, NULL, HFILL } + }, + + { &hf_elcom_initiator_port, + { "Port", "elcom.initiator.port", + FT_UINT16, BASE_DEC, NULL, 0, NULL, HFILL } + }, + + { &hf_elcom_initiator_suff, + { "Suffix", "elcom.initiator.suffix", + FT_UINT_STRING, BASE_NONE, NULL, 0, NULL, HFILL } + }, + + { &hf_elcom_responder, + { "Responder", "elcom.responder", + FT_NONE, BASE_NONE, NULL, 0, NULL, HFILL } + }, + + { &hf_elcom_responder_endian, + { "Endian", "elcom.responder.endian", + FT_UINT16, BASE_HEX, VALS(endian_vals), 0, NULL, HFILL } + }, + + { &hf_elcom_responder_ip, + { "IP", "elcom.responder.ip", + FT_IPv4, BASE_NONE, NULL, 0, NULL, HFILL } + }, + + { &hf_elcom_responder_port, + { "Port", "elcom.responder.port", + FT_UINT16, BASE_DEC, NULL, 0, NULL, HFILL } + }, + + { &hf_elcom_responder_suff, + { "Suffix", "elcom.responder.suffix", + FT_UINT_STRING, BASE_NONE, NULL, 0, NULL, HFILL } + }, + + { &hf_elcom_userdata, + { "User Data", "elcom.userdata", + FT_NONE, BASE_NONE, NULL, 0, NULL, HFILL } + }, + + { &hf_elcom_userdata_length, + { "Length", "elcom.userdata.length", + FT_UINT8, BASE_DEC, NULL, 0, NULL, HFILL } + }, + + { &hf_elcom_userdata_pduid, + { "PDU-ID", "elcom.userdata.pduid", + FT_UINT8, BASE_DEC, VALS(userdata_pduid_vals), 0, NULL, HFILL } + }, + + { &hf_elcom_userdata_version, + { "Version", "elcom.userdata.version", + FT_UINT8, BASE_DEC, VALS(userdata_version_vals), 0, NULL, HFILL } + }, + + { &hf_elcom_userdata_result, + { "Result", "elcom.userdata.result", + FT_UINT8, BASE_DEC, VALS(userdata_result_vals), 0, NULL, HFILL } + }, + + { &hf_elcom_userdata_restmark, + { "Restart marking", "elcom.userdata.response.restartcode", + FT_UINT8, BASE_DEC, NULL, 0, NULL, HFILL } + }, + + { &hf_elcom_userdata_cf, + { "Control Field", "elcom.userdata.response.controlfield", + FT_NONE, BASE_NONE, NULL, 0, NULL, HFILL } + }, + + { &hf_elcom_release_reason, + { "Reason", "elcom.release.reason", + FT_UINT8, BASE_DEC, NULL, 0, NULL, HFILL } + }, + + { &hf_elcom_release_result, + { "Result", "elcom.release.result", + FT_UINT8, BASE_DEC, NULL, 0, NULL, HFILL } + }, + + { &hf_elcom_datarequest, + { "Data Request", "elcom.datarequest", + FT_NONE, BASE_NONE, NULL, 0, NULL, HFILL } + }, + + { &hf_elcom_datarequest_grouptype, + { "Group Type", "elcom.datarequest.grouptype", + FT_UINT8, BASE_DEC, VALS(datarequest_grouptype_vals), 0, NULL, HFILL } + }, + + { &hf_elcom_datarequest_result, + { "Result", "elcom.datarequest.result", + FT_UINT8, BASE_DEC, VALS(datarequest_result_vals), 0, NULL, HFILL } + }, + + { &hf_elcom_datarequest_groupnumber, + { "Group Number", "elcom.datarequest.groupnumber", + FT_UINT8, BASE_DEC, NULL, 0, NULL, HFILL } + }, + + { &hf_elcom_datarequest_grouppriority, + { "Group Priority", "elcom.datarequest.grouppriority", + FT_UINT8, BASE_DEC, NULL, 0, NULL, HFILL } + }, + + { &hf_elcom_datarequest_groupsize, + { "Group Size", "elcom.datarequest.groupsize", + FT_UINT8, BASE_DEC, NULL, 0, NULL, HFILL } + }, + + { &hf_elcom_datarequest_groupindex1, + { "Group Index1", "elcom.datarequest.groupindex1", + FT_UINT16, BASE_DEC, NULL, 0, NULL, HFILL } + }, + + { &hf_elcom_datarequest_groupindex2, + { "Group Index2", "elcom.datarequest.groupindex2", + FT_UINT16, BASE_DEC, NULL, 0, NULL, HFILL } + }, + + { &hf_elcom_datarequest_oid, + { "Object Name", "elcom.datarequest.oid", + FT_UINT_STRING, BASE_NONE, NULL, 0, NULL, HFILL } + }, + { &hf_elcom_strangeleftover, + { "Strange Leftover", "elcom.leftover", + FT_BYTES, BASE_NONE, NULL, 0, NULL, HFILL } + } + }; + + /* Setup protocol subtree array */ + static gint *ett[] = { + &ett_elcom, + &ett_elcom_initiator, + &ett_elcom_responder, + &ett_elcom_userdata, + &ett_elcom_datarequest + }; + + /* Register the protocol name and description */ + proto_elcom = proto_register_protocol ( + "ELCOM Communication Protocol", + "ELCOM", + "elcom" + ); + + /* Required function calls to register the header fields and subtrees used */ + proto_register_field_array(proto_elcom, hf, array_length(hf)); + proto_register_subtree_array(ett, array_length(ett)); + + elcom_handle = register_dissector("elcom", dissect_elcom, proto_elcom); +} + +void +proto_reg_handoff_elcom(void) +{ + dissector_add_uint_with_preference("tcp.port", TCP_PORT_ELCOM, elcom_handle); +} + +/* + * Editor modelines + * + * Local Variables: + * c-basic-offset: 8 + * tab-width: 8 + * indent-tabs-mode: nil + * End: + * + * ex: set shiftwidth=8 tabstop=8 expandtab: + * :indentSize=8:tabSize=8:noTabs=true: + */ |