forked from osmocom/wireshark
148 lines
4.3 KiB
C
148 lines
4.3 KiB
C
/* packet-ripng.c
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* Routines for RIPng disassembly
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* (c) Copyright Jun-ichiro itojun Hagino <itojun@itojun.org>
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* derived from packet-rip.c
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*
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* $Id: packet-ripng.c,v 1.6 1999/11/16 11:42:51 guy Exp $
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*
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* Ethereal - Network traffic analyzer
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* By Gerald Combs <gerald@zing.org>
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* Copyright 1998 Gerald Combs
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*
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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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#include "config.h"
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#ifdef HAVE_SYS_TYPES_H
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#include <sys/types.h>
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#endif
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#ifdef HAVE_NETINET_IN_H
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#include <netinet/in.h>
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#endif
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#include <glib.h>
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#include "packet.h"
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#include "packet-ipv6.h"
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#include "packet-ripng.h"
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#ifndef offsetof
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#define offsetof(type, member) ((size_t)(&((type *)0)->member))
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#endif
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static int proto_ripng = -1;
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static int hf_ripng_cmd = -1;
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static int hf_ripng_version = -1;
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static gint ett_ripng = -1;
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static gint ett_ripng_addr = -1;
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void
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dissect_ripng(const u_char *pd, int offset, frame_data *fd, proto_tree *tree) {
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struct rip6 rip6;
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struct netinfo6 ni6;
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proto_tree *ripng_tree = NULL;
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proto_tree *subtree = NULL;
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proto_item *ti;
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static const value_string cmdvals[] = {
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{ RIP6_REQUEST, "Request" },
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{ RIP6_RESPONSE, "Response" },
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{ 0, NULL },
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};
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const char *cmd;
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/* avoid alignment problem */
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memcpy(&rip6, &pd[offset], sizeof(rip6));
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cmd = val_to_str(rip6.rip6_cmd, cmdvals, "Unknown");
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if (check_col(fd, COL_PROTOCOL))
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col_add_fstr(fd, COL_PROTOCOL, "RIPng version %d", rip6.rip6_vers);
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if (check_col(fd, COL_INFO))
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col_add_fstr(fd, COL_INFO, "%s", cmd);
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if (tree) {
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ti = proto_tree_add_item(tree, proto_ripng, offset, END_OF_FRAME, NULL);
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ripng_tree = proto_item_add_subtree(ti, ett_ripng);
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proto_tree_add_item_format(ripng_tree, hf_ripng_cmd, offset, 1,
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rip6.rip6_cmd,
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"Command: %s (%u)", cmd, rip6.rip6_cmd);
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proto_tree_add_item(ripng_tree, hf_ripng_version, offset + 1, 1,
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rip6.rip6_vers);
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offset += 4;
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while ((pi.captured_len - offset) >= sizeof(struct netinfo6)){
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memcpy(&ni6, &pd[offset], sizeof(ni6));
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if (ni6.rip6_tag) {
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ti = proto_tree_add_text(ripng_tree, offset,
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sizeof(ni6), "IP Address: %s/%d, Metric: %ld, tag: 0x%04x",
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ip6_to_str(&ni6.rip6_dest),
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ni6.rip6_plen,
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ni6.rip6_metric,
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ntohs(ni6.rip6_tag));
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} else {
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ti = proto_tree_add_text(ripng_tree, offset,
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sizeof(ni6), "IP Address: %s/%d, Metric: %ld",
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ip6_to_str(&ni6.rip6_dest),
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ni6.rip6_plen,
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ni6.rip6_metric);
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}
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subtree = proto_item_add_subtree(ti, ett_ripng_addr);
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proto_tree_add_text(subtree,
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offset + offsetof(struct netinfo6, rip6_dest),
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sizeof(ni6.rip6_dest), "IP Address: %s",
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ip6_to_str(&ni6.rip6_dest));
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proto_tree_add_text(subtree,
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offset + offsetof(struct netinfo6, rip6_tag),
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sizeof(ni6.rip6_tag), "Tag: 0x%04x",
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ntohs(ni6.rip6_tag));
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proto_tree_add_text(subtree,
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offset + offsetof(struct netinfo6, rip6_plen),
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sizeof(ni6.rip6_plen), "Prefix length: %d",
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ni6.rip6_plen);
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proto_tree_add_text(subtree,
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offset + offsetof(struct netinfo6, rip6_metric),
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sizeof(ni6.rip6_metric), "Metric: %d",
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ni6.rip6_metric);
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offset += sizeof(ni6);
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}
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}
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}
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void
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proto_register_ripng(void)
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{
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static hf_register_info hf[] = {
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{ &hf_ripng_cmd,
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{ "Command", "ripng.cmd",
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FT_UINT8, BASE_DEC, NULL, 0x0, "" }},
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{ &hf_ripng_version,
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{ "Version", "ripng.version",
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FT_UINT8, BASE_DEC, NULL, 0x0, "" }},
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};
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static gint *ett[] = {
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&ett_ripng,
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&ett_ripng_addr,
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};
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proto_ripng = proto_register_protocol("RIPng", "ripng");
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proto_register_field_array(proto_ripng, hf, array_length(hf));
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proto_register_subtree_array(ett, array_length(ett));
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}
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