421 lines
11 KiB
C
421 lines
11 KiB
C
/* packet-userlog.c
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* Routines for userlog protocol packet disassembly
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* Copyright 2016, Jun Wang <sdn_app@163.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 1998 Gerald Combs
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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/*
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* Userlog is user flow logs of H3C device.
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* Flow logging records users' access to the extranet. The device classifies and
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* calculates flows through the 5-tuple information, which includes source IP address,
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* destination IP address, source port, destination port, and protocol number,
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* and generates user flow logs. Flow logging records the 5-tuple information of
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* the packets and number of the bytes received and sent. With flow logs, administrators
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* can track and record accesses to the network, facilitating the availability and
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* security of the network.
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*
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*/
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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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#include <epan/ipproto.h>
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void proto_register_userlog(void);
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void proto_reg_handoff_userlog(void);
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static int proto_userlog = -1;
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static int hf_userlog_version = -1;
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static int hf_userlog_logtype = -1;
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static int hf_userlog_count = -1;
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static int hf_userlog_timestamp = -1;
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static int hf_userlog_header_reserved = -1;
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static int hf_userlog_proto = -1;
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static int hf_userlog_Operator = -1;
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static int hf_userlog_IPVerion = -1;
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static int hf_userlog_IPToS = -1;
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static int hf_userlog_SourceIP = -1;
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static int hf_userlog_SrcNatIP = -1;
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static int hf_userlog_DestIP = -1;
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static int hf_userlog_DestNatIP = -1;
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static int hf_userlog_SrcPort = -1;
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static int hf_userlog_SrcNatPort = -1;
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static int hf_userlog_DestPort = -1;
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static int hf_userlog_DestNatPort = -1;
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static int hf_userlog_StartTime = -1;
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static int hf_userlog_EndTime = -1;
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static int hf_userlog_InTotalPkg = -1;
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static int hf_userlog_InTotalByte = -1;
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static int hf_userlog_OutTotalPkg = -1;
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static int hf_userlog_OutTotalByte = -1;
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static int hf_userlog_Reserved1 = -1;
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static int hf_userlog_Reserved2 = -1;
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static int hf_userlog_Reserved3 = -1;
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static gint ett_userlog = -1;
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static gint ett_userlog_header = -1;
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static gint ett_userlog_log = -1;
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static const value_string version[] = {
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{ 1, "V1" },
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{ 3, "V3" },
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{ 0, NULL }
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};
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static const value_string logtype[] = {
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{ 1, "NAT" },
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{ 2, "BAS" },
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{ 4, "Flow" },
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{ 0, NULL }
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};
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static const value_string Operator[] = {
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{ 1, "normal close flow" },
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{ 2, "timeout" },
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{ 3, "clear flow" },
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{ 4, "overflow" },
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{ 5, "nat static" },
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{ 6, "time data threshold" },
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{ 7, "flow delete" },
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{ 8, "flow create" },
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{ 0, NULL }
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};
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/* Minimum length (in bytes) of the protocol data. */
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#define USERLOG_MIN_LENGTH 8
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/* Code to actually dissect the packets */
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static int
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dissect_userlog(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
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{
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/* Set up structures needed to add the protocol subtree and manage it */
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proto_item *ti;
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proto_tree *userlog_header, *userlog_tree;
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proto_tree *userlog_log;
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/* Other misc. local variables. */
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gint offset = 0;
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guint log_count = 1;
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guint log_type, log_max;
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/* Check that the packet is long enough for it to belong to us. */
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if (tvb_reported_length(tvb) < USERLOG_MIN_LENGTH)
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return 0;
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col_set_str(pinfo->cinfo, COL_PROTOCOL, "UserLog");
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/* Clear out stuff in the info column */
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col_clear(pinfo->cinfo,COL_INFO);
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ti = proto_tree_add_item(tree, proto_userlog, tvb, 0, -1, ENC_NA);
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userlog_tree = proto_item_add_subtree(ti, ett_userlog);
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userlog_header = proto_tree_add_subtree(userlog_tree, tvb, 0, 16, ett_userlog_header, NULL, "UserLog Header");
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proto_tree_add_item(userlog_header, hf_userlog_version, tvb, offset, 1, ENC_BIG_ENDIAN);
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offset += 1;
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proto_tree_add_item_ret_uint(userlog_header, hf_userlog_logtype, tvb, offset, 1, ENC_BIG_ENDIAN, &log_type);
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col_add_fstr(pinfo->cinfo, COL_INFO, "LogType = %s", val_to_str(log_type, logtype, "Unknown (0x%02x)"));
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offset += 1;
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proto_tree_add_item_ret_uint(userlog_header, hf_userlog_count, tvb, offset, 2, ENC_BIG_ENDIAN, &log_max);
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proto_item_append_text(ti, ", Log Count = %d", log_max);
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offset += 2;
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proto_tree_add_item(userlog_header, hf_userlog_timestamp, tvb, offset, 4, ENC_BIG_ENDIAN);
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offset += 4;
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/* XXX - 8 bytes unaccounted for */
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proto_tree_add_item(userlog_header, hf_userlog_header_reserved, tvb, offset, 8, ENC_NA);
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offset += 8;
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if (userlog_tree) { /* we are being asked for details */
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while ( log_count <= log_max)
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{
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userlog_log = proto_tree_add_subtree_format(userlog_tree, tvb, offset, 64, ett_userlog_log, NULL, "UserLog No.%d", log_count);
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proto_tree_add_item(userlog_log, hf_userlog_proto, tvb, offset, 1, ENC_BIG_ENDIAN);
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offset += 1;
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proto_tree_add_item(userlog_log, hf_userlog_Operator, tvb, offset, 1, ENC_BIG_ENDIAN);
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offset += 1;
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proto_tree_add_item(userlog_log, hf_userlog_IPVerion, tvb, offset, 1, ENC_BIG_ENDIAN);
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offset += 1;
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proto_tree_add_item(userlog_log, hf_userlog_IPToS, tvb, offset, 1, ENC_BIG_ENDIAN);
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offset += 1;
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proto_tree_add_item(userlog_log, hf_userlog_SourceIP, tvb, offset, 4, ENC_BIG_ENDIAN);
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offset += 4;
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proto_tree_add_item(userlog_log, hf_userlog_SrcNatIP, tvb, offset, 4, ENC_BIG_ENDIAN);
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offset += 4;
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proto_tree_add_item(userlog_log, hf_userlog_DestIP, tvb, offset, 4, ENC_BIG_ENDIAN);
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offset += 4;
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proto_tree_add_item(userlog_log, hf_userlog_DestNatIP, tvb, offset, 4, ENC_BIG_ENDIAN);
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offset += 4;
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proto_tree_add_item(userlog_log, hf_userlog_SrcPort, tvb, offset, 2, ENC_BIG_ENDIAN);
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offset += 2;
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proto_tree_add_item(userlog_log, hf_userlog_SrcNatPort, tvb, offset, 2, ENC_BIG_ENDIAN);
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offset += 2;
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proto_tree_add_item(userlog_log, hf_userlog_DestPort, tvb, offset, 2, ENC_BIG_ENDIAN);
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offset += 2;
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proto_tree_add_item(userlog_log, hf_userlog_DestNatPort, tvb, offset, 2, ENC_BIG_ENDIAN);
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offset += 2;
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proto_tree_add_item(userlog_log, hf_userlog_StartTime, tvb, offset, 4, ENC_BIG_ENDIAN);
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offset += 4;
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proto_tree_add_item(userlog_log, hf_userlog_EndTime, tvb, offset, 4, ENC_BIG_ENDIAN);
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offset += 4;
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proto_tree_add_item(userlog_log, hf_userlog_InTotalPkg, tvb, offset, 4, ENC_BIG_ENDIAN);
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offset += 4;
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proto_tree_add_item(userlog_log, hf_userlog_InTotalByte, tvb, offset, 4, ENC_BIG_ENDIAN);
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offset += 4;
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proto_tree_add_item(userlog_log, hf_userlog_OutTotalPkg, tvb, offset, 4, ENC_BIG_ENDIAN);
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offset += 4;
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proto_tree_add_item(userlog_log, hf_userlog_OutTotalByte, tvb, offset, 4, ENC_BIG_ENDIAN);
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offset += 4;
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proto_tree_add_item(userlog_log, hf_userlog_Reserved1, tvb, offset, 4, ENC_BIG_ENDIAN);
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offset += 4;
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proto_tree_add_item(userlog_log, hf_userlog_Reserved2, tvb, offset, 4, ENC_BIG_ENDIAN);
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offset += 4;
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proto_tree_add_item(userlog_log, hf_userlog_Reserved3, tvb, offset, 4, ENC_BIG_ENDIAN);
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offset += 4;
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log_count++;
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}
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}
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return tvb_captured_length(tvb);
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}
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void
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proto_register_userlog(void)
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{
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static hf_register_info hf[] = {
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{ &hf_userlog_version,
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{ "Version", "userlog.version",
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FT_UINT8, BASE_DEC,
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VALS(version), 0x0,
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NULL, HFILL }
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},
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{ &hf_userlog_logtype,
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{ "LogType", "userlog.logtype",
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FT_UINT8, BASE_DEC,
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VALS(logtype), 0x0,
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NULL, HFILL }
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},
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{ &hf_userlog_count,
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{ "LogCount", "userlog.count",
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FT_UINT16, BASE_DEC,
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NULL, 0x0,
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NULL, HFILL }
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},
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{ &hf_userlog_timestamp,
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{ "TimeStamp", "userlog.timestamp",
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FT_ABSOLUTE_TIME, ABSOLUTE_TIME_LOCAL,
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NULL, 0x0,
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NULL, HFILL }
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},
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{ &hf_userlog_header_reserved,
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{ "Reserved", "userlog.header_reserved",
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FT_BYTES, BASE_NONE,
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NULL, 0x0,
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NULL, HFILL }
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},
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{ &hf_userlog_proto,
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{ "Protocol", "userlog.proto",
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FT_UINT8, BASE_DEC|BASE_EXT_STRING,
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&ipproto_val_ext, 0x0,
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NULL, HFILL }
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},
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{ &hf_userlog_Operator,
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{ "Operator", "userlog.Operator",
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FT_UINT8, BASE_DEC,
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VALS(Operator), 0x0,
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NULL, HFILL }
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},
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{ &hf_userlog_IPVerion,
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{ "IP Version", "userlog.IPVersion",
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FT_UINT8, BASE_DEC,
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NULL, 0x0,
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NULL, HFILL }
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},
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{ &hf_userlog_IPToS,
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{ "IP ToS", "userlog.IPToS",
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FT_UINT8, BASE_DEC,
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NULL, 0x0,
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NULL, HFILL }
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},
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{ &hf_userlog_SourceIP,
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{ "Source-IP", "userlog.SourceIP",
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FT_IPv4, BASE_NONE,
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NULL, 0x0,
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NULL, HFILL }
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},
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{ &hf_userlog_SrcNatIP,
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{ "Source-NAT-IP", "userlog.Source-NAT-IP",
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FT_IPv4, BASE_NONE,
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NULL, 0x0,
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NULL, HFILL }
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},
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{ &hf_userlog_DestIP,
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{ "Destination-IP", "userlog.Destination-IP",
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FT_IPv4, BASE_NONE,
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NULL, 0x0,
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NULL, HFILL }
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},
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{ &hf_userlog_DestNatIP,
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{ "Destination-NAT-IP", "userlog.Destination-NAT-IP",
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FT_IPv4, BASE_NONE,
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NULL, 0x0,
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NULL, HFILL }
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},
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{ &hf_userlog_SrcPort,
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{ "Source-Port", "userlog.Source-Port",
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FT_UINT16, BASE_DEC,
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NULL, 0x0,
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NULL, HFILL }
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},
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{ &hf_userlog_SrcNatPort,
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{ "Source-NAT-Port", "userlog.Source-NAT-Port",
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FT_UINT16, BASE_DEC,
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NULL, 0x0,
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NULL, HFILL }
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},
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{ &hf_userlog_DestPort,
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{ "Destination-Port", "userlog.Destination-Port",
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FT_UINT16, BASE_DEC,
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NULL, 0x0,
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NULL, HFILL }
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},
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{ &hf_userlog_DestNatPort,
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{ "Destination-NAT-Port", "userlog.Destination-NAT-Port",
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FT_UINT16, BASE_DEC,
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NULL, 0x0,
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NULL, HFILL }
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},
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{ &hf_userlog_StartTime,
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{ "StartTime", "userlog.StartTime",
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FT_ABSOLUTE_TIME, ABSOLUTE_TIME_LOCAL,
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NULL, 0x0,
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NULL, HFILL }
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},
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{ &hf_userlog_EndTime,
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{ "EndTime", "userlog.EndTime",
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FT_ABSOLUTE_TIME, ABSOLUTE_TIME_LOCAL,
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NULL, 0x0,
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NULL, HFILL }
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},
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{ &hf_userlog_InTotalPkg,
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{ "InTotalPkg", "userlog.InTotalPkg",
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FT_UINT32, BASE_DEC,
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NULL, 0x0,
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NULL, HFILL }
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},
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{ &hf_userlog_InTotalByte,
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{ "InTotalByte", "userlog.InTotalByte",
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FT_UINT32, BASE_DEC,
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NULL, 0x0,
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NULL, HFILL }
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},
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{ &hf_userlog_OutTotalPkg,
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{ "OutTotalPkg", "userlog.OutTotalPkg",
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FT_UINT32, BASE_DEC,
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NULL, 0x0,
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NULL, HFILL }
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},
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{ &hf_userlog_OutTotalByte,
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{ "OutTotalByte", "userlog.OutTotalByte",
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FT_UINT32, BASE_DEC,
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NULL, 0x0,
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NULL, HFILL }
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},
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{ &hf_userlog_Reserved1,
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{ "Reserved1", "userlog.Reserved1",
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FT_UINT32, BASE_DEC,
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NULL, 0x0,
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NULL, HFILL }
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},
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{ &hf_userlog_Reserved2,
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{ "Reserved2", "userlog.Reserved2",
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FT_UINT32, BASE_DEC,
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NULL, 0x0,
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NULL, HFILL }
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},
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{ &hf_userlog_Reserved3,
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{ "Reserved3", "userlog.Reserved3",
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FT_UINT32, BASE_DEC,
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NULL, 0x0,
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NULL, HFILL }
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}
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};
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/* Setup protocol subtree array */
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static gint *ett[] = {
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&ett_userlog,
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&ett_userlog_header,
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&ett_userlog_log
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};
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proto_userlog = proto_register_protocol("UserLog Protocol", "UserLog", "userlog");
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proto_register_field_array(proto_userlog, hf, array_length(hf));
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proto_register_subtree_array(ett, array_length(ett));
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}
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void
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proto_reg_handoff_userlog(void)
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{
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dissector_handle_t userlog_handle;
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userlog_handle = create_dissector_handle(dissect_userlog, proto_userlog);
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dissector_add_for_decode_as_with_preference("udp.port", userlog_handle);
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}
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/*
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* Editor modelines - https://www.wireshark.org/tools/modelines.html
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*
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* Local variables:
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* c-basic-offset: 8
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* tab-width: 8
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* indent-tabs-mode: t
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* End:
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*
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* vi: set shiftwidth=8 tabstop=8 noexpandtab:
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* :indentSize=8:tabSize=8:noTabs=false:
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*/
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