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wireshark/epan/dissectors/packet-nettl.c
Michael Mann 1e60d63c8c Create call_data_dissector() to call data dissector. 
This saves many dissectors the need to find the data dissector and store a handle to it.

There were also some that were finding it, but not using it.
For others this was the only reason for their handoff function, so it could be eliminated.

Change-Id: I5d3f951ee1daa3d30c060d21bd12bbc881a8027b
Reviewed-on: https://code.wireshark.org/review/14530
Petri-Dish: Michael Mann <mmann78@netscape.net>
Reviewed-by: Michael Mann <mmann78@netscape.net>
2016-03-20 17:38:03 +00:00

379 lines
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/* packet-nettl.c
* Routines for nettl (HP-UX) record header dissection
*
* Original Author Mark C. Brown <mbrown@hp.com>
* Copyright (C) 2005 Hewlett-Packard Development Company, L.P.
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* Copied from packet-pagp.c
*
* 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 <epan/packet.h>
#include <epan/ipproto.h>
#include <wiretap/nettl.h>
void proto_register_nettl(void);
void proto_reg_handoff_nettl(void);
/* Initialize the protocol and registered fields */
static int proto_nettl = -1;
static int hf_nettl_subsys = -1;
static int hf_nettl_devid = -1;
static int hf_nettl_kind = -1;
static int hf_nettl_pid = -1;
static int hf_nettl_uid = -1;
static dissector_handle_t eth_withoutfcs_handle;
static dissector_handle_t tr_handle;
static dissector_handle_t fddi_bitswapped_handle;
static dissector_handle_t lapb_handle;
static dissector_handle_t x25_handle;
static dissector_handle_t sctp_handle;
static dissector_handle_t raw_ip_handle;
static dissector_table_t ip_proto_dissector_table;
static dissector_table_t tcp_subdissector_table;
#define TCP_PORT_TELNET 23
/* Initialize the subtree pointers */
static gint ett_nettl = -1;
/* General declarations and macros */
static const value_string trace_kind[] = {
{ 0x80000000, "Incoming Header" },
{ 0x40000000, "Outgoing Header" },
{ 0x20000000, "Incoming PDU - PDUIN" },
{ 0x20000000, "PDUIN" },
{ 0x10000000, "Outgoing PDU - PDUOUT" },
{ 0x10000000, "PDUOUT" },
{ 0x08000000, "Procedure Trace" },
{ 0x04000000, "State Trace" },
{ 0x02000000, "Error Trace" },
{ 0x01000000, "Logging" },
{ 0x00800000, "Loopback" },
{ 0, NULL }
};
static const value_string subsystem[] = {
{ 0, "NS_LS_LOGGING" },
{ 1, "NS_LS_NFT" },
{ 2, "NS_LS_LOOPBACK" },
{ 3, "NS_LS_NI" },
{ 4, "NS_LS_IPC" },
{ 5, "NS_LS_SOCKREGD" },
{ 6, "NS_LS_TCP" },
{ 7, "NS_LS_PXP" },
{ 8, "NS_LS_UDP" },
{ 9, "NS_LS_IP" },
{ 10, "NS_LS_PROBE" },
{ 11, "NS_LS_DRIVER" },
{ 12, "NS_LS_RLBD" },
{ 13, "NS_LS_BUFS" },
{ 14, "NS_LS_CASE21" },
{ 15, "NS_LS_ROUTER21" },
{ 16, "NS_LS_NFS" },
{ 17, "NS_LS_NETISR" },
{ 18, "NS_LS_X25D" },
{ 19, "NS_LS_NSE" },
{ 20, "NS_LS_STRLOG" },
{ 21, "NS_LS_TIRDWR" },
{ 22, "NS_LS_TIMOD" },
{ 23, "NS_LS_ICMP" },
{ 24, "X25L2" },
{ 25, "X25L3" },
{ 26, "FILTER" },
{ 27, "NAME" },
{ 28, "ACC" },
{ 29, "NS_LS_IGMP" },
{ 31, "TOKEN" },
{ 32, "HIPPI" },
{ 33, "EISA_FC" },
{ 34, "SX25L2" },
{ 35, "SX25L3" },
{ 36, "NS_LS_SX25" },
{ 37, "100VG" },
{ 38, "EISA_ATM" },
{ 39, "SEAH_FDDI" },
{ 40, "TELECOM_HLR" },
{ 41, "TELECOM_SCE" },
{ 42, "TELECOM_SMS" },
{ 43, "TELECOM_NEM" },
{ 50, "FORE_ATM" },
{ 60, "TMOS_TOB" },
{ 62, "TELECOM_SCP" },
{ 63, "TELECOM_SS7" },
{ 64, "FTAM_INIT" },
{ 65, "FTAM_RESP" },
{ 70, "FTAM_VFS" },
{ 72, "FTAM_USER" },
{ 82, "OVS" },
{ 84, "OVEXTERNAL" },
{ 90, "OTS9000" },
{ 91, "OTS9000-NETWORK" },
{ 92, "OTS9000-TRANSPORT" },
{ 93, "OTS9000-SESSION" },
{ 94, "OTS9000-ACSE_PRES" },
{ 95, "FDDI" },
{ 116, "SHM" },
{ 119, "ACSE_US" },
{ 121, "HPS" },
{ 122, "CM" },
{ 123, "ULA_UTILS" },
{ 124, "EM" },
{ 129, "STREAMS" },
{ 164, "LAN100" },
{ 172, "EISA100BT" },
{ 173, "BASE100" },
{ 174, "EISA_FDDI" },
{ 176, "PCI_FDDI" },
{ 177, "HSC_FDDI" },
{ 178, "GSC100BT" },
{ 179, "PCI100BT" },
{ 180, "SPP100BT" },
{ 181, "GLE" },
{ 182, "FQE" },
{ 185, "GELAN" },
{ 187, "PCITR" },
{ 188, "HP_APA" },
{ 189, "HP_APAPORT" },
{ 190, "HP_APALACP" },
{ 210, "BTLAN" },
{ 233, "INTL100" },
{ 244, "NS_LS_IPV6" },
{ 245, "NS_LS_ICMPV6" },
{ 246, "DLPI" },
{ 247, "VLAN" },
{ 249, "NS_LS_LOOPBACK6" },
{ 250, "DHCPV6D" },
{ 252, "IGELAN" },
{ 253, "IETHER" },
{ 257, "WBEMProvider-LAN" },
{ 258, "SYSADMIN" },
{ 264, "LVMPROVIDER" },
{ 265, "IXGBE" },
{ 267, "NS_LS_TELNET" },
{ 268, "NS_LS_SCTP" },
{ 269, "HSSN" },
{ 270, "IGSSN" },
{ 271, "ICXGBE" },
{ 275, "IEXGBE" },
{ 277, "IOCXGBE" },
{ 278, "IQXGBE" },
{ 513, "KL_VM" },
{ 514, "KL_PKM" },
{ 515, "KL_DLKM" },
{ 516, "KL_PM" },
{ 517, "KL_VFS" },
{ 518, "KL_VXFS" },
{ 519, "KL_UFS" },
{ 520, "KL_NFS" },
{ 521, "KL_FSVM" },
{ 522, "KL_WSIO" },
{ 523, "KL_SIO" },
{ 524, "KL_NET" },
{ 525, "KL_MC" },
{ 526, "KL_DYNTUNE" },
{ 527, "KL_KEN" },
{ 0, NULL }
};
static value_string_ext subsystem_ext = VALUE_STRING_EXT_INIT(subsystem);
/* Code to actually dissect the nettl record headers */
static int
dissect_nettl(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
{
if (tree) {
proto_tree *nettl_tree;
proto_item *nettl_item;
nettl_item = proto_tree_add_protocol_format(tree, proto_nettl, tvb,
0, -1, "HP-UX Network Tracing and Logging (nettl) header");
nettl_tree = proto_item_add_subtree(nettl_item, ett_nettl);
proto_tree_add_uint_format_value(nettl_tree, hf_nettl_subsys, tvb,
0, 0, pinfo->pseudo_header->nettl.subsys, "%d (%s)",
pinfo->pseudo_header->nettl.subsys,
val_to_str_ext_const(pinfo->pseudo_header->nettl.subsys, &subsystem_ext, "Unknown"));
proto_tree_add_int(nettl_tree, hf_nettl_devid, tvb,
0, 0, pinfo->pseudo_header->nettl.devid);
proto_tree_add_uint_format_value(nettl_tree, hf_nettl_kind, tvb,
0, 0, pinfo->pseudo_header->nettl.kind,
"0x%08x (%s)", pinfo->pseudo_header->nettl.kind,
val_to_str_const(pinfo->pseudo_header->nettl.kind & ~NETTL_HDR_SUBSYSTEM_BITS_MASK, trace_kind, "Unknown"));
proto_tree_add_int(nettl_tree, hf_nettl_pid, tvb,
0, 0, pinfo->pseudo_header->nettl.pid);
proto_tree_add_uint(nettl_tree, hf_nettl_uid, tvb,
0, 0, pinfo->pseudo_header->nettl.uid);
}
switch (pinfo->pkt_encap) {
case WTAP_ENCAP_NETTL_ETHERNET:
call_dissector(eth_withoutfcs_handle, tvb, pinfo, tree);
break;
case WTAP_ENCAP_NETTL_TOKEN_RING:
call_dissector(tr_handle, tvb, pinfo, tree);
break;
case WTAP_ENCAP_NETTL_FDDI:
call_dissector(fddi_bitswapped_handle, tvb, pinfo, tree);
break;
case WTAP_ENCAP_NETTL_RAW_IP:
if ( (pinfo->pseudo_header->nettl.kind & NETTL_HDR_PDU_MASK) == 0 )
/* not actually a data packet (PDU) trace record */
call_data_dissector(tvb, pinfo, tree);
else if (pinfo->pseudo_header->nettl.subsys == NETTL_SUBSYS_NS_LS_SCTP )
call_dissector(sctp_handle, tvb, pinfo, tree);
else
call_dissector(raw_ip_handle, tvb, pinfo, tree);
break;
case WTAP_ENCAP_NETTL_RAW_ICMP:
if (!dissector_try_uint(ip_proto_dissector_table,
IP_PROTO_ICMP, tvb, pinfo, tree))
call_data_dissector(tvb, pinfo, tree);
break;
case WTAP_ENCAP_NETTL_RAW_ICMPV6:
if (!dissector_try_uint(ip_proto_dissector_table,
IP_PROTO_ICMPV6, tvb, pinfo, tree))
call_data_dissector(tvb, pinfo, tree);
break;
case WTAP_ENCAP_NETTL_X25:
if (pinfo->pseudo_header->nettl.kind == NETTL_HDR_PDUIN)
pinfo->p2p_dir = P2P_DIR_RECV;
else if (pinfo->pseudo_header->nettl.kind == NETTL_HDR_PDUOUT)
pinfo->p2p_dir = P2P_DIR_SENT;
if (pinfo->pseudo_header->nettl.subsys == NETTL_SUBSYS_SX25L2)
call_dissector(lapb_handle, tvb, pinfo, tree);
else
call_dissector(x25_handle, tvb, pinfo, tree);
break;
case WTAP_ENCAP_NETTL_RAW_TELNET:
if (!dissector_try_uint(tcp_subdissector_table,
TCP_PORT_TELNET, tvb, pinfo, tree))
call_data_dissector(tvb, pinfo, tree);
break;
default:
col_set_str(pinfo->cinfo, COL_PROTOCOL, "UNKNOWN");
col_add_fstr(pinfo->cinfo, COL_INFO, "Unsupported nettl subsytem: %d (%s)",
pinfo->pseudo_header->nettl.subsys,
val_to_str_ext_const(pinfo->pseudo_header->nettl.subsys, &subsystem_ext, "Unknown"));
call_data_dissector(tvb, pinfo, tree);
}
return tvb_captured_length(tvb);
}
/* Register the protocol with Wireshark */
void
proto_register_nettl(void)
{
/* Setup list of header fields */
static hf_register_info hf[] = {
{ &hf_nettl_subsys,
{ "Subsystem", "nettl.subsys", FT_UINT16, BASE_DEC | BASE_EXT_STRING, &subsystem_ext, 0x0,
"HP-UX Subsystem/Driver", HFILL }},
{ &hf_nettl_devid,
{ "Device ID", "nettl.devid", FT_INT32, BASE_DEC, NULL, 0x0,
"HP-UX Device ID", HFILL }},
{ &hf_nettl_kind,
{ "Trace Kind", "nettl.kind", FT_UINT32, BASE_HEX, VALS(trace_kind), 0x0,
"HP-UX Trace record kind", HFILL}},
{ &hf_nettl_pid,
{ "Process ID (pid/ktid)", "nettl.pid", FT_INT32, BASE_DEC, NULL, 0x0,
"HP-UX Process/thread id", HFILL}},
{ &hf_nettl_uid,
{ "User ID (uid)", "nettl.uid", FT_UINT16, BASE_DEC, NULL, 0x0,
"HP-UX User ID", HFILL}}
};
/* Setup protocol subtree array */
static gint *ett[] = {
&ett_nettl
};
/* Register the protocol name and description */
proto_nettl = proto_register_protocol("HP-UX Network Tracing and Logging", "nettl", "nettl");
/* Required function calls to register the header fields and subtrees used */
proto_register_field_array(proto_nettl, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
}
void
proto_reg_handoff_nettl(void)
{
dissector_handle_t nettl_handle;
/*
* Get handles for various dissectors and dissector tables.
*/
eth_withoutfcs_handle = find_dissector_add_dependency("eth_withoutfcs", proto_nettl);
tr_handle = find_dissector_add_dependency("tr", proto_nettl);
fddi_bitswapped_handle = find_dissector_add_dependency("fddi_bitswapped", proto_nettl);
lapb_handle = find_dissector_add_dependency("lapb", proto_nettl);
x25_handle = find_dissector_add_dependency("x.25", proto_nettl);
sctp_handle = find_dissector_add_dependency("sctp", proto_nettl);
raw_ip_handle = find_dissector_add_dependency("raw_ip", proto_nettl);
ip_proto_dissector_table = find_dissector_table("ip.proto");
tcp_subdissector_table = find_dissector_table("tcp.port");
nettl_handle = create_dissector_handle(dissect_nettl, proto_nettl);
dissector_add_uint("wtap_encap", WTAP_ENCAP_NETTL_ETHERNET, nettl_handle);
dissector_add_uint("wtap_encap", WTAP_ENCAP_NETTL_TOKEN_RING, nettl_handle);
dissector_add_uint("wtap_encap", WTAP_ENCAP_NETTL_FDDI, nettl_handle);
dissector_add_uint("wtap_encap", WTAP_ENCAP_NETTL_RAW_IP, nettl_handle);
dissector_add_uint("wtap_encap", WTAP_ENCAP_NETTL_RAW_ICMP, nettl_handle);
dissector_add_uint("wtap_encap", WTAP_ENCAP_NETTL_RAW_ICMPV6, nettl_handle);
dissector_add_uint("wtap_encap", WTAP_ENCAP_NETTL_RAW_TELNET, nettl_handle);
dissector_add_uint("wtap_encap", WTAP_ENCAP_NETTL_X25, nettl_handle);
dissector_add_uint("wtap_encap", WTAP_ENCAP_NETTL_UNKNOWN, nettl_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:
*/
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