forked from osmocom/wireshark
add support for dissecting multicast sync packets for Linux IPVS
svn path=/trunk/; revision=10425
This commit is contained in:
Nathan Neulinger
parent
ed5641230d
commit
51c2041aa1
1
AUTHORS
1
AUTHORS
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@ -224,6 +224,7 @@ Nathan Neulinger <nneul[AT]umr.edu> {
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releases of automake and autoconf)
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Additional cipher suite names for SSL
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SEBEK - Kernel read() data capture protocol support
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Linux IPVS Synchronization Daemon support
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}
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Tomislav Vujec <tvujec[AT]carnet.hr> {
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@ -3,7 +3,7 @@
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# a) common to both files and
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# b) portable between both files
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#
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# $Id: Makefile.common,v 1.9 2004/03/19 07:54:58 guy Exp $
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# $Id: Makefile.common,v 1.10 2004/03/21 17:13:01 nneul Exp $
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#
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# Ethereal - Network traffic analyzer
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# By Gerald Combs <gerald@ethereal.com>
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@ -236,6 +236,7 @@ DISSECTOR_SRC = \
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../packet-ipsec-udp.c \
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../packet-ipsec.c \
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../packet-ipv6.c \
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../packet-ipvs-syncd.c \
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../packet-ipx.c \
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../packet-ipxwan.c \
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../packet-irc.c \
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@ -0,0 +1,353 @@
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/* packet-ipvs-syncd.c 2001 Ronnie Sahlberg <See AUTHORS for email>
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* Routines for IGMP packet disassembly
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*
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* $Id: packet-ipvs-syncd.c,v 1.1 2004/03/21 17:13:01 nneul Exp $
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*
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* Ethereal - Network traffic analyzer
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* By Gerald Combs <gerald@ethereal.com>
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* Copyright 1998 Gerald Combs
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <stdio.h>
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#include <string.h>
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#include <glib.h>
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#ifdef NEED_SNPRINTF_H
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# include "snprintf.h"
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#endif
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#include <epan/packet.h>
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#include "ipproto.h"
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#include "in_cksum.h"
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static int proto_ipvs_syncd = -1;
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static int hf_conn_count = -1;
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static int hf_syncid = -1;
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static int hf_size = -1;
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static int hf_resv8 = -1;
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static int hf_proto = -1;
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static int hf_cport = -1;
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static int hf_vport = -1;
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static int hf_dport = -1;
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static int hf_caddr = -1;
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static int hf_vaddr = -1;
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static int hf_daddr = -1;
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static int hf_flags = -1;
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static int hf_state = -1;
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static int hf_in_seq_init = -1;
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static int hf_in_seq_delta = -1;
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static int hf_in_seq_pdelta = -1;
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static int hf_out_seq_init = -1;
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static int hf_out_seq_delta = -1;
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static int hf_out_seq_pdelta = -1;
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static int ett_ipvs_syncd = -1;
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static int ett_conn = -1;
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static int ett_flags = -1;
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#define IPVS_SYNCD_MC_GROUP "224.0.0.18"
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#define IPVS_SYNCD_PORT 8848
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static const value_string proto_strings[] = {
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{0x06, "UDP"},
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{0x11, "TCP"},
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{0x00, NULL},
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};
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static const value_string state_strings[] = {
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{0x00, "Input"},
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{0x04, "Output"},
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{0x08, "Input Only"},
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{0x00, NULL},
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};
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/*
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* IPVS Connection Flags
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* Pulled from include/net/ip_vs.h in linux kernel source
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*/
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#define IP_VS_CONN_F_FWD_MASK 0x0007 /* mask for the fwd methods */
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#define IP_VS_CONN_F_MASQ 0x0000 /* masquerading */
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#define IP_VS_CONN_F_LOCALNODE 0x0001 /* local node */
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#define IP_VS_CONN_F_TUNNEL 0x0002 /* tunneling */
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#define IP_VS_CONN_F_DROUTE 0x0003 /* direct routing */
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#define IP_VS_CONN_F_BYPASS 0x0004 /* cache bypass */
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#define IP_VS_CONN_F_HASHED 0x0040 /* hashed entry */
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#define IP_VS_CONN_F_NOOUTPUT 0x0080 /* no output packets */
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#define IP_VS_CONN_F_INACTIVE 0x0100 /* not established */
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#define IP_VS_CONN_F_OUT_SEQ 0x0200 /* must do output seq adjust */
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#define IP_VS_CONN_F_IN_SEQ 0x0400 /* must do input seq adjust */
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#define IP_VS_CONN_F_SEQ_MASK 0x0600 /* in/out sequence mask */
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#define IP_VS_CONN_F_NO_CPORT 0x0800 /* no client port set yet */
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static void
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dissect_ipvs_syncd(tvbuff_t *tvb, packet_info *pinfo, proto_tree *parent_tree)
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{
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proto_tree *tree;
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proto_item *item;
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int offset = 0;
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guint8 cnt = 0;
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int conn = 0;
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item = proto_tree_add_item(parent_tree, proto_ipvs_syncd, tvb, offset, -1, FALSE);
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tree = proto_item_add_subtree(item, ett_ipvs_syncd);
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if (check_col(pinfo->cinfo, COL_PROTOCOL)) {
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col_set_str(pinfo->cinfo, COL_PROTOCOL, "IPVS");
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}
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if (check_col(pinfo->cinfo, COL_INFO)) {
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col_clear(pinfo->cinfo, COL_INFO);
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}
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cnt = tvb_get_guint8(tvb, offset);
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proto_tree_add_item(tree, hf_conn_count, tvb, offset, 1, FALSE);
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offset += 1;
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proto_tree_add_item(tree, hf_syncid, tvb, offset, 1, FALSE);
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offset += 1;
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proto_tree_add_item(tree, hf_size, tvb, offset, 2, TRUE);
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offset += 2;
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for (conn = 0; conn < cnt; conn++)
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{
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proto_tree *ctree, *ti;
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proto_tree *ftree, *fi;
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guint16 flags;
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ti = proto_tree_add_text(tree, tvb, offset, 24, "Connection #%d", conn+1);
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ctree = proto_item_add_subtree(ti, ett_conn);
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proto_tree_add_item(ctree, hf_resv8, tvb, offset, 1, FALSE);
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offset += 1;
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proto_tree_add_item(ctree, hf_proto, tvb, offset, 1, FALSE);
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offset += 1;
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proto_tree_add_item(ctree, hf_cport, tvb, offset, 2, FALSE);
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offset += 2;
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proto_tree_add_item(ctree, hf_vport, tvb, offset, 2, FALSE);
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offset += 2;
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proto_tree_add_item(ctree, hf_dport, tvb, offset, 2, FALSE);
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offset += 2;
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proto_tree_add_item(ctree, hf_caddr, tvb, offset, 4, FALSE);
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offset += 4;
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proto_tree_add_item(ctree, hf_vaddr, tvb, offset, 4, FALSE);
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offset += 4;
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proto_tree_add_item(ctree, hf_daddr, tvb, offset, 4, FALSE);
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offset += 4;
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flags = tvb_get_ntohs(tvb, offset);
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fi = proto_tree_add_item(ctree, hf_flags, tvb, offset, 2, FALSE);
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ftree = proto_item_add_subtree(fi, ett_flags);
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if ( (flags & 0x0F) == IP_VS_CONN_F_MASQ )
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{
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proto_tree_add_text(ftree, tvb, offset+1, 1, "Connection Type: Masquerade");
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}
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else if ( (flags & 0x0F) == IP_VS_CONN_F_LOCALNODE )
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{
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proto_tree_add_text(ftree, tvb, offset+1, 1, "Connection Type: Local Node");
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}
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else if ( (flags & 0x0F) == IP_VS_CONN_F_TUNNEL )
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{
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proto_tree_add_text(ftree, tvb, offset+1, 1, "Connection Type: Tunnel");
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}
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else if ( (flags & 0x0F) == IP_VS_CONN_F_DROUTE )
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{
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proto_tree_add_text(ftree, tvb, offset+1, 1, "Connection Type: Direct Routing");
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}
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else
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{
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proto_tree_add_text(ftree, tvb, offset+1, 1, "Connection Type: Unknown (%d)",
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flags & IP_VS_CONN_F_FWD_MASK);
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}
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if ( flags & IP_VS_CONN_F_HASHED )
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{
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proto_tree_add_text(ftree, tvb, offset+1, 1, "Hashed Entry");
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}
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if ( flags & IP_VS_CONN_F_NOOUTPUT )
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{
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proto_tree_add_text(ftree, tvb, offset+1, 1, "No Output Packets");
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}
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if ( flags & IP_VS_CONN_F_INACTIVE )
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{
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proto_tree_add_text(ftree, tvb, offset, 1, "Connection Not Established");
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}
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if ( flags & IP_VS_CONN_F_OUT_SEQ )
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{
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proto_tree_add_text(ftree, tvb, offset, 1, "Adjust Output Sequence");
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}
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if ( flags & IP_VS_CONN_F_IN_SEQ )
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{
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proto_tree_add_text(ftree, tvb, offset, 1, "Adjust Input Sequence");
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}
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if ( flags & IP_VS_CONN_F_NO_CPORT )
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{
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proto_tree_add_text(ftree, tvb, offset, 1, "No Client Port Set");
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}
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offset += 2;
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proto_tree_add_item(ctree, hf_state, tvb, offset, 2, FALSE);
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offset += 2;
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/* we have full connection info */
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if ( flags & IP_VS_CONN_F_SEQ_MASK )
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{
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proto_tree_add_item(ctree, hf_in_seq_init, tvb, offset, 4, FALSE);
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offset += 4;
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proto_tree_add_item(ctree, hf_in_seq_delta, tvb, offset, 4, FALSE);
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offset += 4;
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proto_tree_add_item(ctree, hf_in_seq_pdelta, tvb, offset, 4, FALSE);
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offset += 4;
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proto_tree_add_item(ctree, hf_out_seq_init, tvb, offset, 4, FALSE);
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offset += 4;
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proto_tree_add_item(ctree, hf_out_seq_delta, tvb, offset, 4, FALSE);
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offset += 4;
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proto_tree_add_item(ctree, hf_out_seq_pdelta, tvb, offset, 4, FALSE);
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offset += 4;
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}
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}
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}
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void
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proto_register_ipvs_syncd(void)
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{
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static hf_register_info hf[] = {
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{ &hf_conn_count,
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{ "Connection Count", "ipvs.conncount", FT_UINT8, BASE_DEC,
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NULL, 0, "Connection Count", HFILL }},
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{ &hf_syncid,
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{ "Synchronization ID", "ipvs.syncid", FT_UINT8, BASE_DEC,
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NULL, 0, "Syncronization ID", HFILL }},
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{ &hf_size,
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{ "Size", "ipvs.size", FT_UINT16, BASE_DEC,
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NULL, 0, "Size", HFILL }},
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{ &hf_resv8,
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{ "Reserved", "ipvs.resv8", FT_UINT8, BASE_HEX,
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NULL, 0, "Reserved", HFILL }},
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{ &hf_proto,
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{ "Protocol", "ipvs.proto", FT_UINT8, BASE_HEX,
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VALS(&proto_strings), 0, "Protocol", HFILL }},
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{ &hf_cport,
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{ "Client Port", "ipvs.cport", FT_UINT16, BASE_DEC,
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NULL, 0, "Client Port", HFILL }},
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{ &hf_vport,
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{ "Virtual Port", "ipvs.vport", FT_UINT16, BASE_DEC,
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NULL, 0, "Virtual Port", HFILL }},
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{ &hf_dport,
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{ "Destination Port", "ipvs.dport", FT_UINT16, BASE_DEC,
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NULL, 0, "Destination Port", HFILL }},
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{ &hf_caddr,
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{ "Client Address", "ipvs.caddr", FT_IPv4, BASE_HEX,
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NULL, 0, "Client Address", HFILL }},
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{ &hf_vaddr,
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{ "Virtual Address", "ipvs.vaddr", FT_IPv4, BASE_HEX,
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NULL, 0, "Virtual Address", HFILL }},
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{ &hf_daddr,
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{ "Destination Address", "ipvs.daddr", FT_IPv4, BASE_HEX,
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NULL, 0, "Destination Address", HFILL }},
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{ &hf_flags,
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{ "Flags", "ipvs.flags", FT_UINT16, BASE_HEX,
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NULL, 0, "Flags", HFILL }},
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{ &hf_state,
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{ "State", "ipvs.state", FT_UINT16, BASE_HEX,
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VALS(&state_strings), 0, "State", HFILL }},
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{ &hf_in_seq_init,
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{ "Input Sequence (Initial)", "ipvs.in_seq.initial", FT_UINT32,
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BASE_HEX, NULL, 0, "Input Sequence (Initial)", HFILL }},
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{ &hf_in_seq_delta,
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{ "Input Sequence (Delta)", "ipvs.in_seq.delta", FT_UINT32,
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BASE_HEX, NULL, 0, "Input Sequence (Delta)", HFILL }},
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{ &hf_in_seq_pdelta,
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{ "Input Sequence (Previous Delta)", "ipvs.in_seq.pdelta", FT_UINT32,
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BASE_HEX, NULL, 0, "Input Sequence (Previous Delta)", HFILL }},
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{ &hf_out_seq_init,
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{ "Output Sequence (Initial)", "ipvs.out_seq.initial", FT_UINT32,
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BASE_HEX, NULL, 0, "Output Sequence (Initial)", HFILL }},
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{ &hf_out_seq_delta,
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{ "Output Sequence (Delta)", "ipvs.out_seq.delta", FT_UINT32,
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BASE_HEX, NULL, 0, "Output Sequence (Delta)", HFILL }},
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{ &hf_out_seq_pdelta,
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{ "Output Sequence (Previous Delta)", "ipvs.out_seq.pdelta", FT_UINT32,
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BASE_HEX, NULL, 0, "Output Sequence (Previous Delta)", HFILL }},
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};
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static gint *ett[] = {
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&ett_ipvs_syncd,
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&ett_conn,
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&ett_flags,
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};
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proto_ipvs_syncd = proto_register_protocol("IP Virtual Services Sync Daemon",
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"IPVS", "ipvs");
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proto_register_field_array(proto_ipvs_syncd, 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_ipvs_syncd(void)
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{
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dissector_handle_t ipvs_syncd_handle;
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ipvs_syncd_handle = create_dissector_handle(dissect_ipvs_syncd, proto_ipvs_syncd);
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dissector_add("udp.port", IPVS_SYNCD_PORT, ipvs_syncd_handle);
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}
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