1096 lines
30 KiB
C
1096 lines
30 KiB
C
/*
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* Copyright (c) 1995, 1996
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that: (1) source code distributions
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* retain the above copyright notice and this paragraph in its entirety, (2)
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* distributions including binary code include the above copyright notice and
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* this paragraph in its entirety in the documentation or other materials
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* provided with the distribution, and (3) all advertising materials mentioning
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* features or use of this software display the following acknowledgement:
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* ``This product includes software developed by the University of California,
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* Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
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* the University nor the names of its contributors may be used to endorse
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* or promote products derived from this software without specific prior
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* written permission.
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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*
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* $FreeBSD$
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*/
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#ifndef lint
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static const char rcsid[] _U_ =
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"@(#) $Header: /tcpdump/master/tcpdump/print-pim.c,v 1.49 2006-02-13 01:31:35 hannes Exp $ (LBL)";
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#endif
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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 <tcpdump-stdinc.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include "interface.h"
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#include "addrtoname.h"
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#include "extract.h"
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#include "ip.h"
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#define PIMV2_TYPE_HELLO 0
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#define PIMV2_TYPE_REGISTER 1
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#define PIMV2_TYPE_REGISTER_STOP 2
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#define PIMV2_TYPE_JOIN_PRUNE 3
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#define PIMV2_TYPE_BOOTSTRAP 4
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#define PIMV2_TYPE_ASSERT 5
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#define PIMV2_TYPE_GRAFT 6
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#define PIMV2_TYPE_GRAFT_ACK 7
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#define PIMV2_TYPE_CANDIDATE_RP 8
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#define PIMV2_TYPE_PRUNE_REFRESH 9
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static struct tok pimv2_type_values[] = {
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{ PIMV2_TYPE_HELLO, "Hello" },
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{ PIMV2_TYPE_REGISTER, "Register" },
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{ PIMV2_TYPE_REGISTER_STOP, "Register Stop" },
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{ PIMV2_TYPE_JOIN_PRUNE, "Join / Prune" },
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{ PIMV2_TYPE_BOOTSTRAP, "Bootstrap" },
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{ PIMV2_TYPE_ASSERT, "Assert" },
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{ PIMV2_TYPE_GRAFT, "Graft" },
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{ PIMV2_TYPE_GRAFT_ACK, "Graft Acknowledgement" },
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{ PIMV2_TYPE_CANDIDATE_RP, "Candidate RP Advertisement" },
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{ PIMV2_TYPE_PRUNE_REFRESH, "Prune Refresh" },
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{ 0, NULL}
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};
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#define PIMV2_HELLO_OPTION_HOLDTIME 1
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#define PIMV2_HELLO_OPTION_LANPRUNEDELAY 2
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#define PIMV2_HELLO_OPTION_DR_PRIORITY_OLD 18
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#define PIMV2_HELLO_OPTION_DR_PRIORITY 19
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#define PIMV2_HELLO_OPTION_GENID 20
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#define PIMV2_HELLO_OPTION_REFRESH_CAP 21
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#define PIMV2_HELLO_OPTION_BIDIR_CAP 22
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#define PIMV2_HELLO_OPTION_ADDRESS_LIST 24
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#define PIMV2_HELLO_OPTION_ADDRESS_LIST_OLD 65001
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static struct tok pimv2_hello_option_values[] = {
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{ PIMV2_HELLO_OPTION_HOLDTIME, "Hold Time" },
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{ PIMV2_HELLO_OPTION_LANPRUNEDELAY, "LAN Prune Delay" },
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{ PIMV2_HELLO_OPTION_DR_PRIORITY_OLD, "DR Priority (Old)" },
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{ PIMV2_HELLO_OPTION_DR_PRIORITY, "DR Priority" },
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{ PIMV2_HELLO_OPTION_GENID, "Generation ID" },
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{ PIMV2_HELLO_OPTION_REFRESH_CAP, "State Refresh Capability" },
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{ PIMV2_HELLO_OPTION_BIDIR_CAP, "Bi-Directional Capability" },
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{ PIMV2_HELLO_OPTION_ADDRESS_LIST, "Address List" },
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{ PIMV2_HELLO_OPTION_ADDRESS_LIST_OLD, "Address List (Old)" },
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{ 0, NULL}
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};
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#define PIMV2_REGISTER_FLAG_LEN 4
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#define PIMV2_REGISTER_FLAG_BORDER 0x80000000
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#define PIMV2_REGISTER_FLAG_NULL 0x40000000
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static struct tok pimv2_register_flag_values[] = {
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{ PIMV2_REGISTER_FLAG_BORDER, "Border" },
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{ PIMV2_REGISTER_FLAG_NULL, "Null" },
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{ 0, NULL}
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};
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/*
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* XXX: We consider a case where IPv6 is not ready yet for portability,
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* but PIM dependent defintions should be independent of IPv6...
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*/
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struct pim {
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u_int8_t pim_typever;
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/* upper 4bit: PIM version number; 2 for PIMv2 */
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/* lower 4bit: the PIM message type, currently they are:
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* Hello, Register, Register-Stop, Join/Prune,
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* Bootstrap, Assert, Graft (PIM-DM only),
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* Graft-Ack (PIM-DM only), C-RP-Adv
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*/
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#define PIM_VER(x) (((x) & 0xf0) >> 4)
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#define PIM_TYPE(x) ((x) & 0x0f)
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u_char pim_rsv; /* Reserved */
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u_short pim_cksum; /* IP style check sum */
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};
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static void pimv2_print(register const u_char *bp, register u_int len, u_int cksum);
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static void
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pimv1_join_prune_print(register const u_char *bp, register u_int len)
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{
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int maddrlen, addrlen, ngroups, njoin, nprune;
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int njp;
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/* If it's a single group and a single source, use 1-line output. */
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if (TTEST2(bp[0], 30) && bp[11] == 1 &&
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((njoin = EXTRACT_16BITS(&bp[20])) + EXTRACT_16BITS(&bp[22])) == 1) {
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int hold;
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(void)printf(" RPF %s ", ipaddr_string(bp));
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hold = EXTRACT_16BITS(&bp[6]);
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if (hold != 180) {
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(void)printf("Hold ");
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relts_print(hold);
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}
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(void)printf("%s (%s/%d, %s", njoin ? "Join" : "Prune",
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ipaddr_string(&bp[26]), bp[25] & 0x3f,
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ipaddr_string(&bp[12]));
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if (EXTRACT_32BITS(&bp[16]) != 0xffffffff)
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(void)printf("/%s", ipaddr_string(&bp[16]));
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(void)printf(") %s%s %s",
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(bp[24] & 0x01) ? "Sparse" : "Dense",
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(bp[25] & 0x80) ? " WC" : "",
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(bp[25] & 0x40) ? "RP" : "SPT");
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return;
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}
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TCHECK2(bp[0], sizeof(struct in_addr));
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if (vflag > 1)
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(void)printf("\n");
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(void)printf(" Upstream Nbr: %s", ipaddr_string(bp));
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TCHECK2(bp[6], 2);
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if (vflag > 1)
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(void)printf("\n");
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(void)printf(" Hold time: ");
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relts_print(EXTRACT_16BITS(&bp[6]));
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if (vflag < 2)
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return;
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bp += 8;
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len -= 8;
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TCHECK2(bp[0], 4);
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maddrlen = bp[1];
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addrlen = bp[2];
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ngroups = bp[3];
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bp += 4;
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len -= 4;
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while (ngroups--) {
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/*
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* XXX - does the address have length "addrlen" and the
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* mask length "maddrlen"?
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*/
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TCHECK2(bp[0], sizeof(struct in_addr));
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(void)printf("\n\tGroup: %s", ipaddr_string(bp));
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TCHECK2(bp[4], sizeof(struct in_addr));
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if (EXTRACT_32BITS(&bp[4]) != 0xffffffff)
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(void)printf("/%s", ipaddr_string(&bp[4]));
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TCHECK2(bp[8], 4);
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njoin = EXTRACT_16BITS(&bp[8]);
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nprune = EXTRACT_16BITS(&bp[10]);
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(void)printf(" joined: %d pruned: %d", njoin, nprune);
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bp += 12;
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len -= 12;
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for (njp = 0; njp < (njoin + nprune); njp++) {
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const char *type;
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if (njp < njoin)
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type = "Join ";
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else
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type = "Prune";
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TCHECK2(bp[0], 6);
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(void)printf("\n\t%s %s%s%s%s/%d", type,
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(bp[0] & 0x01) ? "Sparse " : "Dense ",
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(bp[1] & 0x80) ? "WC " : "",
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(bp[1] & 0x40) ? "RP " : "SPT ",
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ipaddr_string(&bp[2]), bp[1] & 0x3f);
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bp += 6;
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len -= 6;
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}
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}
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return;
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trunc:
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(void)printf("[|pim]");
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return;
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}
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void
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pimv1_print(register const u_char *bp, register u_int len)
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{
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register const u_char *ep;
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register u_char type;
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ep = (const u_char *)snapend;
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if (bp >= ep)
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return;
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TCHECK(bp[1]);
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type = bp[1];
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switch (type) {
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case 0:
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(void)printf(" Query");
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if (TTEST(bp[8])) {
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switch (bp[8] >> 4) {
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case 0:
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(void)printf(" Dense-mode");
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break;
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case 1:
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(void)printf(" Sparse-mode");
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break;
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case 2:
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(void)printf(" Sparse-Dense-mode");
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break;
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default:
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(void)printf(" mode-%d", bp[8] >> 4);
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break;
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}
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}
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if (vflag) {
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TCHECK2(bp[10],2);
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(void)printf(" (Hold-time ");
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relts_print(EXTRACT_16BITS(&bp[10]));
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(void)printf(")");
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}
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break;
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case 1:
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(void)printf(" Register");
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TCHECK2(bp[8], 20); /* ip header */
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(void)printf(" for %s > %s", ipaddr_string(&bp[20]),
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ipaddr_string(&bp[24]));
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break;
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case 2:
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(void)printf(" Register-Stop");
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TCHECK2(bp[12], sizeof(struct in_addr));
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(void)printf(" for %s > %s", ipaddr_string(&bp[8]),
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ipaddr_string(&bp[12]));
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break;
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case 3:
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(void)printf(" Join/Prune");
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if (vflag)
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pimv1_join_prune_print(&bp[8], len - 8);
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break;
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case 4:
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(void)printf(" RP-reachable");
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if (vflag) {
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TCHECK2(bp[22], 2);
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(void)printf(" group %s",
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ipaddr_string(&bp[8]));
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if (EXTRACT_32BITS(&bp[12]) != 0xffffffff)
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(void)printf("/%s", ipaddr_string(&bp[12]));
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(void)printf(" RP %s hold ", ipaddr_string(&bp[16]));
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relts_print(EXTRACT_16BITS(&bp[22]));
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}
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break;
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case 5:
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(void)printf(" Assert");
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TCHECK2(bp[16], sizeof(struct in_addr));
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(void)printf(" for %s > %s", ipaddr_string(&bp[16]),
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ipaddr_string(&bp[8]));
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if (EXTRACT_32BITS(&bp[12]) != 0xffffffff)
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(void)printf("/%s", ipaddr_string(&bp[12]));
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TCHECK2(bp[24], 4);
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(void)printf(" %s pref %d metric %d",
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(bp[20] & 0x80) ? "RP-tree" : "SPT",
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EXTRACT_32BITS(&bp[20]) & 0x7fffffff,
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EXTRACT_32BITS(&bp[24]));
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break;
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case 6:
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(void)printf(" Graft");
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if (vflag)
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pimv1_join_prune_print(&bp[8], len - 8);
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break;
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case 7:
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(void)printf(" Graft-ACK");
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if (vflag)
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pimv1_join_prune_print(&bp[8], len - 8);
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break;
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case 8:
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(void)printf(" Mode");
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break;
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default:
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(void)printf(" [type %d]", type);
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break;
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}
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if ((bp[4] >> 4) != 1)
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(void)printf(" [v%d]", bp[4] >> 4);
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return;
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trunc:
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(void)printf("[|pim]");
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return;
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}
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/*
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* auto-RP is a cisco protocol, documented at
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* ftp://ftpeng.cisco.com/ipmulticast/specs/pim-autorp-spec01.txt
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*
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* This implements version 1+, dated Sept 9, 1998.
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*/
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void
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cisco_autorp_print(register const u_char *bp, register u_int len)
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{
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int type;
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int numrps;
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int hold;
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TCHECK(bp[0]);
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(void)printf(" auto-rp ");
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type = bp[0];
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switch (type) {
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case 0x11:
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(void)printf("candidate-advert");
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break;
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case 0x12:
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(void)printf("mapping");
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break;
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default:
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(void)printf("type-0x%02x", type);
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break;
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}
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TCHECK(bp[1]);
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numrps = bp[1];
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TCHECK2(bp[2], 2);
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(void)printf(" Hold ");
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hold = EXTRACT_16BITS(&bp[2]);
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if (hold)
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relts_print(EXTRACT_16BITS(&bp[2]));
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else
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printf("FOREVER");
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/* Next 4 bytes are reserved. */
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bp += 8; len -= 8;
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/*XXX skip unless -v? */
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/*
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* Rest of packet:
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* numrps entries of the form:
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* 32 bits: RP
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* 6 bits: reserved
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* 2 bits: PIM version supported, bit 0 is "supports v1", 1 is "v2".
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* 8 bits: # of entries for this RP
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* each entry: 7 bits: reserved, 1 bit: negative,
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* 8 bits: mask 32 bits: source
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* lather, rinse, repeat.
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*/
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while (numrps--) {
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int nentries;
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char s;
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TCHECK2(bp[0], 4);
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(void)printf(" RP %s", ipaddr_string(bp));
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TCHECK(bp[4]);
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switch (bp[4] & 0x3) {
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case 0: printf(" PIMv?");
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break;
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case 1: printf(" PIMv1");
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break;
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case 2: printf(" PIMv2");
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break;
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case 3: printf(" PIMv1+2");
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break;
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}
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if (bp[4] & 0xfc)
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(void)printf(" [rsvd=0x%02x]", bp[4] & 0xfc);
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TCHECK(bp[5]);
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nentries = bp[5];
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bp += 6; len -= 6;
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s = ' ';
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for (; nentries; nentries--) {
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TCHECK2(bp[0], 6);
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(void)printf("%c%s%s/%d", s, bp[0] & 1 ? "!" : "",
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ipaddr_string(&bp[2]), bp[1]);
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if (bp[0] & 0x02) {
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(void)printf(" bidir");
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}
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if (bp[0] & 0xfc) {
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(void)printf("[rsvd=0x%02x]", bp[0] & 0xfc);
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}
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s = ',';
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bp += 6; len -= 6;
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}
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}
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return;
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trunc:
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(void)printf("[|autorp]");
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return;
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}
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|
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void
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pim_print(register const u_char *bp, register u_int len, u_int cksum)
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{
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register const u_char *ep;
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register struct pim *pim = (struct pim *)bp;
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ep = (const u_char *)snapend;
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if (bp >= ep)
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return;
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#ifdef notyet /* currently we see only version and type */
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TCHECK(pim->pim_rsv);
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#endif
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|
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switch (PIM_VER(pim->pim_typever)) {
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case 2:
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if (!vflag) {
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printf("PIMv%u, %s, length %u",
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PIM_VER(pim->pim_typever),
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tok2str(pimv2_type_values,"Unknown Type",PIM_TYPE(pim->pim_typever)),
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len);
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return;
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} else {
|
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printf("PIMv%u, length %u\n\t%s",
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PIM_VER(pim->pim_typever),
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len,
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tok2str(pimv2_type_values,"Unknown Type",PIM_TYPE(pim->pim_typever)));
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pimv2_print(bp, len, cksum);
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}
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break;
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default:
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printf("PIMv%u, length %u",
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PIM_VER(pim->pim_typever),
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len);
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break;
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}
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return;
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}
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|
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/*
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* PIMv2 uses encoded address representations.
|
|
*
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* The last PIM-SM I-D before RFC2117 was published specified the
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* following representation for unicast addresses. However, RFC2117
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* specified no encoding for unicast addresses with the unicast
|
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* address length specified in the header. Therefore, we have to
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|
* guess which encoding is being used (Cisco's PIMv2 implementation
|
|
* uses the non-RFC encoding). RFC2117 turns a previously "Reserved"
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|
* field into a 'unicast-address-length-in-bytes' field. We guess
|
|
* that it's the draft encoding if this reserved field is zero.
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|
*
|
|
* RFC2362 goes back to the encoded format, and calls the addr length
|
|
* field "reserved" again.
|
|
*
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|
* The first byte is the address family, from:
|
|
*
|
|
* 0 Reserved
|
|
* 1 IP (IP version 4)
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|
* 2 IP6 (IP version 6)
|
|
* 3 NSAP
|
|
* 4 HDLC (8-bit multidrop)
|
|
* 5 BBN 1822
|
|
* 6 802 (includes all 802 media plus Ethernet "canonical format")
|
|
* 7 E.163
|
|
* 8 E.164 (SMDS, Frame Relay, ATM)
|
|
* 9 F.69 (Telex)
|
|
* 10 X.121 (X.25, Frame Relay)
|
|
* 11 IPX
|
|
* 12 Appletalk
|
|
* 13 Decnet IV
|
|
* 14 Banyan Vines
|
|
* 15 E.164 with NSAP format subaddress
|
|
*
|
|
* In addition, the second byte is an "Encoding". 0 is the default
|
|
* encoding for the address family, and no other encodings are currently
|
|
* specified.
|
|
*
|
|
*/
|
|
|
|
static int pimv2_addr_len;
|
|
|
|
enum pimv2_addrtype {
|
|
pimv2_unicast, pimv2_group, pimv2_source
|
|
};
|
|
|
|
/* 0 1 2 3
|
|
* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
* | Addr Family | Encoding Type | Unicast Address |
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+++++++
|
|
* 0 1 2 3
|
|
* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
* | Addr Family | Encoding Type | Reserved | Mask Len |
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
* | Group multicast Address |
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
* 0 1 2 3
|
|
* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
* | Addr Family | Encoding Type | Rsrvd |S|W|R| Mask Len |
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
* | Source Address |
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
*/
|
|
static int
|
|
pimv2_addr_print(const u_char *bp, enum pimv2_addrtype at, int silent)
|
|
{
|
|
int af;
|
|
int len, hdrlen;
|
|
|
|
TCHECK(bp[0]);
|
|
|
|
if (pimv2_addr_len == 0) {
|
|
TCHECK(bp[1]);
|
|
switch (bp[0]) {
|
|
case 1:
|
|
af = AF_INET;
|
|
len = sizeof(struct in_addr);
|
|
break;
|
|
#ifdef INET6
|
|
case 2:
|
|
af = AF_INET6;
|
|
len = sizeof(struct in6_addr);
|
|
break;
|
|
#endif
|
|
default:
|
|
return -1;
|
|
}
|
|
if (bp[1] != 0)
|
|
return -1;
|
|
hdrlen = 2;
|
|
} else {
|
|
switch (pimv2_addr_len) {
|
|
case sizeof(struct in_addr):
|
|
af = AF_INET;
|
|
break;
|
|
#ifdef INET6
|
|
case sizeof(struct in6_addr):
|
|
af = AF_INET6;
|
|
break;
|
|
#endif
|
|
default:
|
|
return -1;
|
|
break;
|
|
}
|
|
len = pimv2_addr_len;
|
|
hdrlen = 0;
|
|
}
|
|
|
|
bp += hdrlen;
|
|
switch (at) {
|
|
case pimv2_unicast:
|
|
TCHECK2(bp[0], len);
|
|
if (af == AF_INET) {
|
|
if (!silent)
|
|
(void)printf("%s", ipaddr_string(bp));
|
|
}
|
|
#ifdef INET6
|
|
else if (af == AF_INET6) {
|
|
if (!silent)
|
|
(void)printf("%s", ip6addr_string(bp));
|
|
}
|
|
#endif
|
|
return hdrlen + len;
|
|
case pimv2_group:
|
|
case pimv2_source:
|
|
TCHECK2(bp[0], len + 2);
|
|
if (af == AF_INET) {
|
|
if (!silent) {
|
|
(void)printf("%s", ipaddr_string(bp + 2));
|
|
if (bp[1] != 32)
|
|
(void)printf("/%u", bp[1]);
|
|
}
|
|
}
|
|
#ifdef INET6
|
|
else if (af == AF_INET6) {
|
|
if (!silent) {
|
|
(void)printf("%s", ip6addr_string(bp + 2));
|
|
if (bp[1] != 128)
|
|
(void)printf("/%u", bp[1]);
|
|
}
|
|
}
|
|
#endif
|
|
if (bp[0] && !silent) {
|
|
if (at == pimv2_group) {
|
|
(void)printf("(0x%02x)", bp[0]);
|
|
} else {
|
|
(void)printf("(%s%s%s",
|
|
bp[0] & 0x04 ? "S" : "",
|
|
bp[0] & 0x02 ? "W" : "",
|
|
bp[0] & 0x01 ? "R" : "");
|
|
if (bp[0] & 0xf8) {
|
|
(void) printf("+0x%02x", bp[0] & 0xf8);
|
|
}
|
|
(void)printf(")");
|
|
}
|
|
}
|
|
return hdrlen + 2 + len;
|
|
default:
|
|
return -1;
|
|
}
|
|
trunc:
|
|
return -1;
|
|
}
|
|
|
|
static void
|
|
pimv2_print(register const u_char *bp, register u_int len, u_int cksum)
|
|
{
|
|
register const u_char *ep;
|
|
register struct pim *pim = (struct pim *)bp;
|
|
int advance;
|
|
|
|
ep = (const u_char *)snapend;
|
|
if (bp >= ep)
|
|
return;
|
|
if (ep > bp + len)
|
|
ep = bp + len;
|
|
TCHECK(pim->pim_rsv);
|
|
pimv2_addr_len = pim->pim_rsv;
|
|
if (pimv2_addr_len != 0)
|
|
(void)printf(", RFC2117-encoding");
|
|
|
|
printf(", cksum 0x%04x ", EXTRACT_16BITS(&pim->pim_cksum));
|
|
if (EXTRACT_16BITS(&pim->pim_cksum) == 0) {
|
|
printf("(unverified)");
|
|
} else {
|
|
printf("(%scorrect)", TTEST2(bp[0], len) && cksum ? "in" : "" );
|
|
}
|
|
|
|
switch (PIM_TYPE(pim->pim_typever)) {
|
|
case PIMV2_TYPE_HELLO:
|
|
{
|
|
u_int16_t otype, olen;
|
|
bp += 4;
|
|
while (bp < ep) {
|
|
TCHECK2(bp[0], 4);
|
|
otype = EXTRACT_16BITS(&bp[0]);
|
|
olen = EXTRACT_16BITS(&bp[2]);
|
|
TCHECK2(bp[0], 4 + olen);
|
|
|
|
printf("\n\t %s Option (%u), length %u, Value: ",
|
|
tok2str( pimv2_hello_option_values,"Unknown",otype),
|
|
otype,
|
|
olen);
|
|
bp += 4;
|
|
|
|
switch (otype) {
|
|
case PIMV2_HELLO_OPTION_HOLDTIME:
|
|
relts_print(EXTRACT_16BITS(bp));
|
|
break;
|
|
|
|
case PIMV2_HELLO_OPTION_LANPRUNEDELAY:
|
|
if (olen != 4) {
|
|
(void)printf("ERROR: Option Lenght != 4 Bytes (%u)", olen);
|
|
} else {
|
|
char t_bit;
|
|
u_int16_t lan_delay, override_interval;
|
|
lan_delay = EXTRACT_16BITS(bp);
|
|
override_interval = EXTRACT_16BITS(bp+2);
|
|
t_bit = (lan_delay & 0x8000)? 1 : 0;
|
|
lan_delay &= ~0x8000;
|
|
(void)printf("\n\t T-bit=%d, LAN delay %dms, Override interval %dms",
|
|
t_bit, lan_delay, override_interval);
|
|
}
|
|
break;
|
|
|
|
case PIMV2_HELLO_OPTION_DR_PRIORITY_OLD:
|
|
case PIMV2_HELLO_OPTION_DR_PRIORITY:
|
|
switch (olen) {
|
|
case 0:
|
|
printf("Bi-Directional Capability (Old)");
|
|
break;
|
|
case 4:
|
|
printf("%u", EXTRACT_32BITS(bp));
|
|
break;
|
|
default:
|
|
printf("ERROR: Option Lenght != 4 Bytes (%u)", olen);
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case PIMV2_HELLO_OPTION_GENID:
|
|
(void)printf("0x%08x", EXTRACT_32BITS(bp));
|
|
break;
|
|
|
|
case PIMV2_HELLO_OPTION_REFRESH_CAP:
|
|
(void)printf("v%d", *bp);
|
|
if (*(bp+1) != 0) {
|
|
(void)printf(", interval ");
|
|
relts_print(*(bp+1));
|
|
}
|
|
if (EXTRACT_16BITS(bp+2) != 0) {
|
|
(void)printf(" ?0x%04x?", EXTRACT_16BITS(bp+2));
|
|
}
|
|
break;
|
|
|
|
case PIMV2_HELLO_OPTION_BIDIR_CAP:
|
|
break;
|
|
|
|
case PIMV2_HELLO_OPTION_ADDRESS_LIST_OLD:
|
|
case PIMV2_HELLO_OPTION_ADDRESS_LIST:
|
|
if (vflag > 1) {
|
|
const u_char *ptr = bp;
|
|
while (ptr < (bp+olen)) {
|
|
int advance;
|
|
|
|
printf("\n\t ");
|
|
advance = pimv2_addr_print(ptr, pimv2_unicast, 0);
|
|
if (advance < 0) {
|
|
printf("...");
|
|
break;
|
|
}
|
|
ptr += advance;
|
|
}
|
|
}
|
|
break;
|
|
default:
|
|
if (vflag <= 1)
|
|
print_unknown_data(bp,"\n\t ",olen);
|
|
break;
|
|
}
|
|
/* do we want to see an additionally hexdump ? */
|
|
if (vflag> 1)
|
|
print_unknown_data(bp,"\n\t ",olen);
|
|
bp += olen;
|
|
}
|
|
break;
|
|
}
|
|
|
|
case PIMV2_TYPE_REGISTER:
|
|
{
|
|
struct ip *ip;
|
|
|
|
if (!TTEST2(*(bp+4), PIMV2_REGISTER_FLAG_LEN))
|
|
goto trunc;
|
|
|
|
printf(", Flags [ %s ]\n\t",
|
|
tok2str(pimv2_register_flag_values,
|
|
"none",
|
|
EXTRACT_32BITS(bp+4)));
|
|
|
|
bp += 8; len -= 8;
|
|
/* encapsulated multicast packet */
|
|
ip = (struct ip *)bp;
|
|
switch (IP_V(ip)) {
|
|
case 0: /* Null header */
|
|
(void)printf("IP-Null-header %s > %s",
|
|
ipaddr_string(&ip->ip_src),
|
|
ipaddr_string(&ip->ip_dst));
|
|
break;
|
|
|
|
case 4: /* IPv4 */
|
|
ip_print(gndo, bp, len);
|
|
break;
|
|
#ifdef INET6
|
|
case 6: /* IPv6 */
|
|
ip6_print(gndo, bp, len);
|
|
break;
|
|
#endif
|
|
default:
|
|
(void)printf("IP ver %d", IP_V(ip));
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
|
|
case PIMV2_TYPE_REGISTER_STOP:
|
|
bp += 4; len -= 4;
|
|
if (bp >= ep)
|
|
break;
|
|
(void)printf(" group=");
|
|
if ((advance = pimv2_addr_print(bp, pimv2_group, 0)) < 0) {
|
|
(void)printf("...");
|
|
break;
|
|
}
|
|
bp += advance; len -= advance;
|
|
if (bp >= ep)
|
|
break;
|
|
(void)printf(" source=");
|
|
if ((advance = pimv2_addr_print(bp, pimv2_unicast, 0)) < 0) {
|
|
(void)printf("...");
|
|
break;
|
|
}
|
|
bp += advance; len -= advance;
|
|
break;
|
|
|
|
case PIMV2_TYPE_JOIN_PRUNE:
|
|
case PIMV2_TYPE_GRAFT:
|
|
case PIMV2_TYPE_GRAFT_ACK:
|
|
|
|
|
|
/*
|
|
* 0 1 2 3
|
|
* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
* |PIM Ver| Type | Addr length | Checksum |
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
* | Unicast-Upstream Neighbor Address |
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
* | Reserved | Num groups | Holdtime |
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
* | Encoded-Multicast Group Address-1 |
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
* | Number of Joined Sources | Number of Pruned Sources |
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
* | Encoded-Joined Source Address-1 |
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
* | . |
|
|
* | . |
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
* | Encoded-Joined Source Address-n |
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
* | Encoded-Pruned Source Address-1 |
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
* | . |
|
|
* | . |
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
* | Encoded-Pruned Source Address-n |
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
* | . |
|
|
* | . |
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
* | Encoded-Multicast Group Address-n |
|
|
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
*/
|
|
|
|
{
|
|
u_int8_t ngroup;
|
|
u_int16_t holdtime;
|
|
u_int16_t njoin;
|
|
u_int16_t nprune;
|
|
int i, j;
|
|
|
|
bp += 4; len -= 4;
|
|
if (PIM_TYPE(pim->pim_typever) != 7) { /*not for Graft-ACK*/
|
|
if (bp >= ep)
|
|
break;
|
|
(void)printf(", upstream-neighbor: ");
|
|
if ((advance = pimv2_addr_print(bp, pimv2_unicast, 0)) < 0) {
|
|
(void)printf("...");
|
|
break;
|
|
}
|
|
bp += advance; len -= advance;
|
|
}
|
|
if (bp + 4 > ep)
|
|
break;
|
|
ngroup = bp[1];
|
|
holdtime = EXTRACT_16BITS(&bp[2]);
|
|
(void)printf("\n\t %u group(s)", ngroup);
|
|
if (PIM_TYPE(pim->pim_typever) != 7) { /*not for Graft-ACK*/
|
|
(void)printf(", holdtime: ");
|
|
if (holdtime == 0xffff)
|
|
(void)printf("infinite");
|
|
else
|
|
relts_print(holdtime);
|
|
}
|
|
bp += 4; len -= 4;
|
|
for (i = 0; i < ngroup; i++) {
|
|
if (bp >= ep)
|
|
goto jp_done;
|
|
(void)printf("\n\t group #%u: ", i+1);
|
|
if ((advance = pimv2_addr_print(bp, pimv2_group, 0)) < 0) {
|
|
(void)printf("...)");
|
|
goto jp_done;
|
|
}
|
|
bp += advance; len -= advance;
|
|
if (bp + 4 > ep) {
|
|
(void)printf("...)");
|
|
goto jp_done;
|
|
}
|
|
njoin = EXTRACT_16BITS(&bp[0]);
|
|
nprune = EXTRACT_16BITS(&bp[2]);
|
|
(void)printf(", joined sources: %u, pruned sources: %u", njoin,nprune);
|
|
bp += 4; len -= 4;
|
|
for (j = 0; j < njoin; j++) {
|
|
(void)printf("\n\t joined source #%u: ",j+1);
|
|
if ((advance = pimv2_addr_print(bp, pimv2_source, 0)) < 0) {
|
|
(void)printf("...)");
|
|
goto jp_done;
|
|
}
|
|
bp += advance; len -= advance;
|
|
}
|
|
for (j = 0; j < nprune; j++) {
|
|
(void)printf("\n\t pruned source #%u: ",j+1);
|
|
if ((advance = pimv2_addr_print(bp, pimv2_source, 0)) < 0) {
|
|
(void)printf("...)");
|
|
goto jp_done;
|
|
}
|
|
bp += advance; len -= advance;
|
|
}
|
|
}
|
|
jp_done:
|
|
break;
|
|
}
|
|
|
|
case PIMV2_TYPE_BOOTSTRAP:
|
|
{
|
|
int i, j, frpcnt;
|
|
bp += 4;
|
|
|
|
/* Fragment Tag, Hash Mask len, and BSR-priority */
|
|
if (bp + sizeof(u_int16_t) >= ep) break;
|
|
(void)printf(" tag=%x", EXTRACT_16BITS(bp));
|
|
bp += sizeof(u_int16_t);
|
|
if (bp >= ep) break;
|
|
(void)printf(" hashmlen=%d", bp[0]);
|
|
if (bp + 1 >= ep) break;
|
|
(void)printf(" BSRprio=%d", bp[1]);
|
|
bp += 2;
|
|
|
|
/* Encoded-Unicast-BSR-Address */
|
|
if (bp >= ep) break;
|
|
(void)printf(" BSR=");
|
|
if ((advance = pimv2_addr_print(bp, pimv2_unicast, 0)) < 0) {
|
|
(void)printf("...");
|
|
break;
|
|
}
|
|
bp += advance;
|
|
|
|
for (i = 0; bp < ep; i++) {
|
|
/* Encoded-Group Address */
|
|
(void)printf(" (group%d: ", i);
|
|
if ((advance = pimv2_addr_print(bp, pimv2_group, 0))
|
|
< 0) {
|
|
(void)printf("...)");
|
|
goto bs_done;
|
|
}
|
|
bp += advance;
|
|
|
|
/* RP-Count, Frag RP-Cnt, and rsvd */
|
|
if (bp >= ep) {
|
|
(void)printf("...)");
|
|
goto bs_done;
|
|
}
|
|
(void)printf(" RPcnt=%d", bp[0]);
|
|
if (bp + 1 >= ep) {
|
|
(void)printf("...)");
|
|
goto bs_done;
|
|
}
|
|
(void)printf(" FRPcnt=%d", frpcnt = bp[1]);
|
|
bp += 4;
|
|
|
|
for (j = 0; j < frpcnt && bp < ep; j++) {
|
|
/* each RP info */
|
|
(void)printf(" RP%d=", j);
|
|
if ((advance = pimv2_addr_print(bp,
|
|
pimv2_unicast,
|
|
0)) < 0) {
|
|
(void)printf("...)");
|
|
goto bs_done;
|
|
}
|
|
bp += advance;
|
|
|
|
if (bp + 1 >= ep) {
|
|
(void)printf("...)");
|
|
goto bs_done;
|
|
}
|
|
(void)printf(",holdtime=");
|
|
relts_print(EXTRACT_16BITS(bp));
|
|
if (bp + 2 >= ep) {
|
|
(void)printf("...)");
|
|
goto bs_done;
|
|
}
|
|
(void)printf(",prio=%d", bp[2]);
|
|
bp += 4;
|
|
}
|
|
(void)printf(")");
|
|
}
|
|
bs_done:
|
|
break;
|
|
}
|
|
case PIMV2_TYPE_ASSERT:
|
|
bp += 4; len -= 4;
|
|
if (bp >= ep)
|
|
break;
|
|
(void)printf(" group=");
|
|
if ((advance = pimv2_addr_print(bp, pimv2_group, 0)) < 0) {
|
|
(void)printf("...");
|
|
break;
|
|
}
|
|
bp += advance; len -= advance;
|
|
if (bp >= ep)
|
|
break;
|
|
(void)printf(" src=");
|
|
if ((advance = pimv2_addr_print(bp, pimv2_unicast, 0)) < 0) {
|
|
(void)printf("...");
|
|
break;
|
|
}
|
|
bp += advance; len -= advance;
|
|
if (bp + 8 > ep)
|
|
break;
|
|
if (bp[0] & 0x80)
|
|
(void)printf(" RPT");
|
|
(void)printf(" pref=%u", EXTRACT_32BITS(&bp[0]) & 0x7fffffff);
|
|
(void)printf(" metric=%u", EXTRACT_32BITS(&bp[4]));
|
|
break;
|
|
|
|
case PIMV2_TYPE_CANDIDATE_RP:
|
|
{
|
|
int i, pfxcnt;
|
|
bp += 4;
|
|
|
|
/* Prefix-Cnt, Priority, and Holdtime */
|
|
if (bp >= ep) break;
|
|
(void)printf(" prefix-cnt=%d", bp[0]);
|
|
pfxcnt = bp[0];
|
|
if (bp + 1 >= ep) break;
|
|
(void)printf(" prio=%d", bp[1]);
|
|
if (bp + 3 >= ep) break;
|
|
(void)printf(" holdtime=");
|
|
relts_print(EXTRACT_16BITS(&bp[2]));
|
|
bp += 4;
|
|
|
|
/* Encoded-Unicast-RP-Address */
|
|
if (bp >= ep) break;
|
|
(void)printf(" RP=");
|
|
if ((advance = pimv2_addr_print(bp, pimv2_unicast, 0)) < 0) {
|
|
(void)printf("...");
|
|
break;
|
|
}
|
|
bp += advance;
|
|
|
|
/* Encoded-Group Addresses */
|
|
for (i = 0; i < pfxcnt && bp < ep; i++) {
|
|
(void)printf(" Group%d=", i);
|
|
if ((advance = pimv2_addr_print(bp, pimv2_group, 0))
|
|
< 0) {
|
|
(void)printf("...");
|
|
break;
|
|
}
|
|
bp += advance;
|
|
}
|
|
break;
|
|
}
|
|
|
|
case PIMV2_TYPE_PRUNE_REFRESH:
|
|
(void)printf(" src=");
|
|
if ((advance = pimv2_addr_print(bp, pimv2_unicast, 0)) < 0) {
|
|
(void)printf("...");
|
|
break;
|
|
}
|
|
bp += advance;
|
|
(void)printf(" grp=");
|
|
if ((advance = pimv2_addr_print(bp, pimv2_group, 0)) < 0) {
|
|
(void)printf("...");
|
|
break;
|
|
}
|
|
bp += advance;
|
|
(void)printf(" forwarder=");
|
|
if ((advance = pimv2_addr_print(bp, pimv2_unicast, 0)) < 0) {
|
|
(void)printf("...");
|
|
break;
|
|
}
|
|
bp += advance;
|
|
TCHECK2(bp[0], 2);
|
|
(void)printf(" TUNR ");
|
|
relts_print(EXTRACT_16BITS(bp));
|
|
break;
|
|
|
|
|
|
default:
|
|
(void)printf(" [type %d]", PIM_TYPE(pim->pim_typever));
|
|
break;
|
|
}
|
|
|
|
return;
|
|
|
|
trunc:
|
|
(void)printf("[|pim]");
|
|
}
|
|
|
|
/*
|
|
* Local Variables:
|
|
* c-style: whitesmith
|
|
* c-basic-offset: 8
|
|
* End:
|
|
*/
|