Local changes: - Update some local modifications to fix build - Synch config.h with upstream as much as possible Changelog: https://git.tcpdump.org/tcpdump/blob/55bc126b0216cfe409b8d6bd378f65679d136ddf:/CHANGES Reviewed by: emaste Obtained from: https://www.tcpdump.org/release/tcpdump-4.99.4.tar.gz Sponsored by: The FreeBSD Foundation
830 lines
21 KiB
C
830 lines
21 KiB
C
/*
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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
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* distributions retain the above copyright notice and this paragraph
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* in its entirety, and (2) distributions including binary code include
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* the above copyright notice and this paragraph in its entirety in
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* the documentation or other materials provided with the distribution.
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND
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* WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT
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* LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE.
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*
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* Original code by Andy Heffernan (ahh@juniper.net)
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*/
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/* \summary: Pragmatic General Multicast (PGM) printer */
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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 "netdissect-stdinc.h"
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#include "netdissect.h"
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#include "extract.h"
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#include "addrtoname.h"
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#include "addrtostr.h"
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#include "ip.h"
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#include "ip6.h"
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#include "ipproto.h"
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#include "af.h"
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/*
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* PGM header (RFC 3208)
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*/
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struct pgm_header {
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nd_uint16_t pgm_sport;
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nd_uint16_t pgm_dport;
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nd_uint8_t pgm_type;
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nd_uint8_t pgm_options;
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nd_uint16_t pgm_sum;
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nd_byte pgm_gsid[6];
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nd_uint16_t pgm_length;
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};
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struct pgm_spm {
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nd_uint32_t pgms_seq;
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nd_uint32_t pgms_trailseq;
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nd_uint32_t pgms_leadseq;
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nd_uint16_t pgms_nla_afi;
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nd_uint16_t pgms_reserved;
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/* ... uint8_t pgms_nla[0]; */
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/* ... options */
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};
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struct pgm_nak {
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nd_uint32_t pgmn_seq;
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nd_uint16_t pgmn_source_afi;
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nd_uint16_t pgmn_reserved;
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/* ... uint8_t pgmn_source[0]; */
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/* ... uint16_t pgmn_group_afi */
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/* ... uint16_t pgmn_reserved2; */
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/* ... uint8_t pgmn_group[0]; */
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/* ... options */
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};
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struct pgm_ack {
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nd_uint32_t pgma_rx_max_seq;
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nd_uint32_t pgma_bitmap;
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/* ... options */
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};
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struct pgm_poll {
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nd_uint32_t pgmp_seq;
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nd_uint16_t pgmp_round;
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nd_uint16_t pgmp_subtype;
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nd_uint16_t pgmp_nla_afi;
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nd_uint16_t pgmp_reserved;
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/* ... uint8_t pgmp_nla[0]; */
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/* ... options */
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};
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struct pgm_polr {
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nd_uint32_t pgmp_seq;
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nd_uint16_t pgmp_round;
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nd_uint16_t pgmp_reserved;
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/* ... options */
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};
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struct pgm_data {
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nd_uint32_t pgmd_seq;
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nd_uint32_t pgmd_trailseq;
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/* ... options */
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};
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typedef enum _pgm_type {
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PGM_SPM = 0, /* source path message */
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PGM_POLL = 1, /* POLL Request */
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PGM_POLR = 2, /* POLL Response */
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PGM_ODATA = 4, /* original data */
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PGM_RDATA = 5, /* repair data */
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PGM_NAK = 8, /* NAK */
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PGM_NULLNAK = 9, /* Null NAK */
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PGM_NCF = 10, /* NAK Confirmation */
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PGM_ACK = 11, /* ACK for congestion control */
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PGM_SPMR = 12, /* SPM request */
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PGM_MAX = 255
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} pgm_type;
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#define PGM_OPT_BIT_PRESENT 0x01
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#define PGM_OPT_BIT_NETWORK 0x02
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#define PGM_OPT_BIT_VAR_PKTLEN 0x40
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#define PGM_OPT_BIT_PARITY 0x80
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#define PGM_OPT_LENGTH 0x00
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#define PGM_OPT_FRAGMENT 0x01
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#define PGM_OPT_NAK_LIST 0x02
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#define PGM_OPT_JOIN 0x03
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#define PGM_OPT_NAK_BO_IVL 0x04
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#define PGM_OPT_NAK_BO_RNG 0x05
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#define PGM_OPT_REDIRECT 0x07
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#define PGM_OPT_PARITY_PRM 0x08
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#define PGM_OPT_PARITY_GRP 0x09
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#define PGM_OPT_CURR_TGSIZE 0x0A
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#define PGM_OPT_NBR_UNREACH 0x0B
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#define PGM_OPT_PATH_NLA 0x0C
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#define PGM_OPT_SYN 0x0D
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#define PGM_OPT_FIN 0x0E
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#define PGM_OPT_RST 0x0F
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#define PGM_OPT_CR 0x10
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#define PGM_OPT_CRQST 0x11
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#define PGM_OPT_PGMCC_DATA 0x12
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#define PGM_OPT_PGMCC_FEEDBACK 0x13
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#define PGM_OPT_MASK 0x7f
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#define PGM_OPT_END 0x80 /* end of options marker */
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#define PGM_MIN_OPT_LEN 4
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void
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pgm_print(netdissect_options *ndo,
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const u_char *bp, u_int length,
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const u_char *bp2)
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{
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const struct pgm_header *pgm;
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const struct ip *ip;
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uint8_t pgm_type_val;
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uint16_t sport, dport;
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u_int nla_afnum;
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char nla_buf[INET6_ADDRSTRLEN];
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const struct ip6_hdr *ip6;
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uint8_t opt_type, opt_len;
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uint32_t seq, opts_len, len, offset;
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ndo->ndo_protocol = "pgm";
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pgm = (const struct pgm_header *)bp;
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ip = (const struct ip *)bp2;
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if (IP_V(ip) == 6)
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ip6 = (const struct ip6_hdr *)bp2;
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else
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ip6 = NULL;
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if (!ND_TTEST_2(pgm->pgm_dport)) {
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if (ip6) {
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ND_PRINT("%s > %s:",
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GET_IP6ADDR_STRING(ip6->ip6_src),
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GET_IP6ADDR_STRING(ip6->ip6_dst));
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} else {
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ND_PRINT("%s > %s:",
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GET_IPADDR_STRING(ip->ip_src),
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GET_IPADDR_STRING(ip->ip_dst));
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}
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nd_print_trunc(ndo);
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return;
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}
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sport = GET_BE_U_2(pgm->pgm_sport);
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dport = GET_BE_U_2(pgm->pgm_dport);
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if (ip6) {
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if (GET_U_1(ip6->ip6_nxt) == IPPROTO_PGM) {
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ND_PRINT("%s.%s > %s.%s: ",
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GET_IP6ADDR_STRING(ip6->ip6_src),
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tcpport_string(ndo, sport),
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GET_IP6ADDR_STRING(ip6->ip6_dst),
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tcpport_string(ndo, dport));
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} else {
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ND_PRINT("%s > %s: ",
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tcpport_string(ndo, sport), tcpport_string(ndo, dport));
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}
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} else {
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if (GET_U_1(ip->ip_p) == IPPROTO_PGM) {
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ND_PRINT("%s.%s > %s.%s: ",
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GET_IPADDR_STRING(ip->ip_src),
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tcpport_string(ndo, sport),
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GET_IPADDR_STRING(ip->ip_dst),
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tcpport_string(ndo, dport));
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} else {
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ND_PRINT("%s > %s: ",
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tcpport_string(ndo, sport), tcpport_string(ndo, dport));
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}
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}
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ND_TCHECK_SIZE(pgm);
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ND_PRINT("PGM, length %u", GET_BE_U_2(pgm->pgm_length));
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if (!ndo->ndo_vflag)
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return;
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pgm_type_val = GET_U_1(pgm->pgm_type);
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ND_PRINT(" 0x%02x%02x%02x%02x%02x%02x ",
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pgm->pgm_gsid[0],
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pgm->pgm_gsid[1],
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pgm->pgm_gsid[2],
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pgm->pgm_gsid[3],
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pgm->pgm_gsid[4],
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pgm->pgm_gsid[5]);
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switch (pgm_type_val) {
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case PGM_SPM: {
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const struct pgm_spm *spm;
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spm = (const struct pgm_spm *)(pgm + 1);
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ND_TCHECK_SIZE(spm);
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bp = (const u_char *) (spm + 1);
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switch (GET_BE_U_2(spm->pgms_nla_afi)) {
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case AFNUM_INET:
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ND_TCHECK_LEN(bp, sizeof(nd_ipv4));
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addrtostr(bp, nla_buf, sizeof(nla_buf));
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bp += sizeof(nd_ipv4);
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break;
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case AFNUM_INET6:
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ND_TCHECK_LEN(bp, sizeof(nd_ipv6));
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addrtostr6(bp, nla_buf, sizeof(nla_buf));
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bp += sizeof(nd_ipv6);
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break;
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default:
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goto trunc;
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break;
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}
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ND_PRINT("SPM seq %u trail %u lead %u nla %s",
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GET_BE_U_4(spm->pgms_seq),
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GET_BE_U_4(spm->pgms_trailseq),
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GET_BE_U_4(spm->pgms_leadseq),
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nla_buf);
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break;
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}
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case PGM_POLL: {
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const struct pgm_poll *pgm_poll;
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uint32_t ivl, rnd, mask;
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pgm_poll = (const struct pgm_poll *)(pgm + 1);
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ND_TCHECK_SIZE(pgm_poll);
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bp = (const u_char *) (pgm_poll + 1);
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switch (GET_BE_U_2(pgm_poll->pgmp_nla_afi)) {
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case AFNUM_INET:
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ND_TCHECK_LEN(bp, sizeof(nd_ipv4));
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addrtostr(bp, nla_buf, sizeof(nla_buf));
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bp += sizeof(nd_ipv4);
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break;
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case AFNUM_INET6:
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ND_TCHECK_LEN(bp, sizeof(nd_ipv6));
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addrtostr6(bp, nla_buf, sizeof(nla_buf));
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bp += sizeof(nd_ipv6);
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break;
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default:
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goto trunc;
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break;
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}
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ivl = GET_BE_U_4(bp);
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bp += sizeof(uint32_t);
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rnd = GET_BE_U_4(bp);
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bp += sizeof(uint32_t);
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mask = GET_BE_U_4(bp);
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bp += sizeof(uint32_t);
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ND_PRINT("POLL seq %u round %u nla %s ivl %u rnd 0x%08x "
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"mask 0x%08x", GET_BE_U_4(pgm_poll->pgmp_seq),
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GET_BE_U_2(pgm_poll->pgmp_round), nla_buf, ivl, rnd,
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mask);
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break;
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}
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case PGM_POLR: {
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const struct pgm_polr *polr_msg;
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polr_msg = (const struct pgm_polr *)(pgm + 1);
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ND_TCHECK_SIZE(polr_msg);
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ND_PRINT("POLR seq %u round %u",
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GET_BE_U_4(polr_msg->pgmp_seq),
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GET_BE_U_2(polr_msg->pgmp_round));
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bp = (const u_char *) (polr_msg + 1);
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break;
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}
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case PGM_ODATA: {
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const struct pgm_data *odata;
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odata = (const struct pgm_data *)(pgm + 1);
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ND_TCHECK_SIZE(odata);
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ND_PRINT("ODATA trail %u seq %u",
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GET_BE_U_4(odata->pgmd_trailseq),
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GET_BE_U_4(odata->pgmd_seq));
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bp = (const u_char *) (odata + 1);
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break;
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}
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case PGM_RDATA: {
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const struct pgm_data *rdata;
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rdata = (const struct pgm_data *)(pgm + 1);
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ND_TCHECK_SIZE(rdata);
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ND_PRINT("RDATA trail %u seq %u",
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GET_BE_U_4(rdata->pgmd_trailseq),
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GET_BE_U_4(rdata->pgmd_seq));
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bp = (const u_char *) (rdata + 1);
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break;
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}
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case PGM_NAK:
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case PGM_NULLNAK:
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case PGM_NCF: {
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const struct pgm_nak *nak;
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char source_buf[INET6_ADDRSTRLEN], group_buf[INET6_ADDRSTRLEN];
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nak = (const struct pgm_nak *)(pgm + 1);
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ND_TCHECK_SIZE(nak);
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bp = (const u_char *) (nak + 1);
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/*
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* Skip past the source, saving info along the way
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* and stopping if we don't have enough.
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*/
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switch (GET_BE_U_2(nak->pgmn_source_afi)) {
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case AFNUM_INET:
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ND_TCHECK_LEN(bp, sizeof(nd_ipv4));
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addrtostr(bp, source_buf, sizeof(source_buf));
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bp += sizeof(nd_ipv4);
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break;
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case AFNUM_INET6:
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ND_TCHECK_LEN(bp, sizeof(nd_ipv6));
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addrtostr6(bp, source_buf, sizeof(source_buf));
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bp += sizeof(nd_ipv6);
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break;
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default:
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goto trunc;
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break;
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}
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/*
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* Skip past the group, saving info along the way
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* and stopping if we don't have enough.
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*/
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bp += (2 * sizeof(uint16_t));
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switch (GET_BE_U_2(bp)) {
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case AFNUM_INET:
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ND_TCHECK_LEN(bp, sizeof(nd_ipv4));
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addrtostr(bp, group_buf, sizeof(group_buf));
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bp += sizeof(nd_ipv4);
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break;
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case AFNUM_INET6:
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ND_TCHECK_LEN(bp, sizeof(nd_ipv6));
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addrtostr6(bp, group_buf, sizeof(group_buf));
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bp += sizeof(nd_ipv6);
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break;
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default:
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goto trunc;
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break;
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}
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/*
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* Options decoding can go here.
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*/
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switch (pgm_type_val) {
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case PGM_NAK:
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ND_PRINT("NAK ");
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break;
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case PGM_NULLNAK:
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ND_PRINT("NNAK ");
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break;
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case PGM_NCF:
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ND_PRINT("NCF ");
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break;
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default:
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break;
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}
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ND_PRINT("(%s -> %s), seq %u",
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source_buf, group_buf, GET_BE_U_4(nak->pgmn_seq));
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break;
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}
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case PGM_ACK: {
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const struct pgm_ack *ack;
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ack = (const struct pgm_ack *)(pgm + 1);
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ND_TCHECK_SIZE(ack);
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ND_PRINT("ACK seq %u",
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GET_BE_U_4(ack->pgma_rx_max_seq));
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bp = (const u_char *) (ack + 1);
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break;
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}
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case PGM_SPMR:
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ND_PRINT("SPMR");
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break;
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default:
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ND_PRINT("UNKNOWN type 0x%02x", pgm_type_val);
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break;
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}
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if (GET_U_1(pgm->pgm_options) & PGM_OPT_BIT_PRESENT) {
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/*
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* make sure there's enough for the first option header
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*/
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ND_TCHECK_LEN(bp, PGM_MIN_OPT_LEN);
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/*
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* That option header MUST be an OPT_LENGTH option
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* (see the first paragraph of section 9.1 in RFC 3208).
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*/
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opt_type = GET_U_1(bp);
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bp++;
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if ((opt_type & PGM_OPT_MASK) != PGM_OPT_LENGTH) {
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ND_PRINT("[First option bad, should be PGM_OPT_LENGTH, is %u]", opt_type & PGM_OPT_MASK);
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return;
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}
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opt_len = GET_U_1(bp);
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bp++;
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if (opt_len != 4) {
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ND_PRINT("[Bad OPT_LENGTH option, length %u != 4]", opt_len);
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return;
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}
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opts_len = GET_BE_U_2(bp);
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bp += sizeof(uint16_t);
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if (opts_len < 4) {
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ND_PRINT("[Bad total option length %u < 4]", opts_len);
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return;
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}
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ND_PRINT(" OPTS LEN %u", opts_len);
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opts_len -= 4;
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while (opts_len) {
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if (opts_len < PGM_MIN_OPT_LEN) {
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ND_PRINT("[Total option length leaves no room for final option]");
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return;
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}
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opt_type = GET_U_1(bp);
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bp++;
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opt_len = GET_U_1(bp);
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bp++;
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if (opt_len < PGM_MIN_OPT_LEN) {
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ND_PRINT("[Bad option, length %u < %u]", opt_len,
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PGM_MIN_OPT_LEN);
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break;
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}
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if (opts_len < opt_len) {
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ND_PRINT("[Total option length leaves no room for final option]");
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return;
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}
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ND_TCHECK_LEN(bp, opt_len - 2);
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switch (opt_type & PGM_OPT_MASK) {
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case PGM_OPT_LENGTH:
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#define PGM_OPT_LENGTH_LEN (2+2)
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if (opt_len != PGM_OPT_LENGTH_LEN) {
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ND_PRINT("[Bad OPT_LENGTH option, length %u != %u]",
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opt_len, PGM_OPT_LENGTH_LEN);
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return;
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}
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ND_PRINT(" OPTS LEN (extra?) %u", GET_BE_U_2(bp));
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bp += 2;
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opts_len -= PGM_OPT_LENGTH_LEN;
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break;
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|
case PGM_OPT_FRAGMENT:
|
|
#define PGM_OPT_FRAGMENT_LEN (2+2+4+4+4)
|
|
if (opt_len != PGM_OPT_FRAGMENT_LEN) {
|
|
ND_PRINT("[Bad OPT_FRAGMENT option, length %u != %u]",
|
|
opt_len, PGM_OPT_FRAGMENT_LEN);
|
|
return;
|
|
}
|
|
bp += 2;
|
|
seq = GET_BE_U_4(bp);
|
|
bp += 4;
|
|
offset = GET_BE_U_4(bp);
|
|
bp += 4;
|
|
len = GET_BE_U_4(bp);
|
|
bp += 4;
|
|
ND_PRINT(" FRAG seq %u off %u len %u", seq, offset, len);
|
|
opts_len -= PGM_OPT_FRAGMENT_LEN;
|
|
break;
|
|
|
|
case PGM_OPT_NAK_LIST:
|
|
bp += 2;
|
|
opt_len -= 4; /* option header */
|
|
ND_PRINT(" NAK LIST");
|
|
while (opt_len) {
|
|
if (opt_len < 4) {
|
|
ND_PRINT("[Option length not a multiple of 4]");
|
|
return;
|
|
}
|
|
ND_PRINT(" %u", GET_BE_U_4(bp));
|
|
bp += 4;
|
|
opt_len -= 4;
|
|
opts_len -= 4;
|
|
}
|
|
break;
|
|
|
|
case PGM_OPT_JOIN:
|
|
#define PGM_OPT_JOIN_LEN (2+2+4)
|
|
if (opt_len != PGM_OPT_JOIN_LEN) {
|
|
ND_PRINT("[Bad OPT_JOIN option, length %u != %u]",
|
|
opt_len, PGM_OPT_JOIN_LEN);
|
|
return;
|
|
}
|
|
bp += 2;
|
|
seq = GET_BE_U_4(bp);
|
|
bp += 4;
|
|
ND_PRINT(" JOIN %u", seq);
|
|
opts_len -= PGM_OPT_JOIN_LEN;
|
|
break;
|
|
|
|
case PGM_OPT_NAK_BO_IVL:
|
|
#define PGM_OPT_NAK_BO_IVL_LEN (2+2+4+4)
|
|
if (opt_len != PGM_OPT_NAK_BO_IVL_LEN) {
|
|
ND_PRINT("[Bad OPT_NAK_BO_IVL option, length %u != %u]",
|
|
opt_len, PGM_OPT_NAK_BO_IVL_LEN);
|
|
return;
|
|
}
|
|
bp += 2;
|
|
offset = GET_BE_U_4(bp);
|
|
bp += 4;
|
|
seq = GET_BE_U_4(bp);
|
|
bp += 4;
|
|
ND_PRINT(" BACKOFF ivl %u ivlseq %u", offset, seq);
|
|
opts_len -= PGM_OPT_NAK_BO_IVL_LEN;
|
|
break;
|
|
|
|
case PGM_OPT_NAK_BO_RNG:
|
|
#define PGM_OPT_NAK_BO_RNG_LEN (2+2+4+4)
|
|
if (opt_len != PGM_OPT_NAK_BO_RNG_LEN) {
|
|
ND_PRINT("[Bad OPT_NAK_BO_RNG option, length %u != %u]",
|
|
opt_len, PGM_OPT_NAK_BO_RNG_LEN);
|
|
return;
|
|
}
|
|
bp += 2;
|
|
offset = GET_BE_U_4(bp);
|
|
bp += 4;
|
|
seq = GET_BE_U_4(bp);
|
|
bp += 4;
|
|
ND_PRINT(" BACKOFF max %u min %u", offset, seq);
|
|
opts_len -= PGM_OPT_NAK_BO_RNG_LEN;
|
|
break;
|
|
|
|
case PGM_OPT_REDIRECT:
|
|
#define PGM_OPT_REDIRECT_FIXED_LEN (2+2+2+2)
|
|
if (opt_len < PGM_OPT_REDIRECT_FIXED_LEN) {
|
|
ND_PRINT("[Bad OPT_REDIRECT option, length %u < %u]",
|
|
opt_len, PGM_OPT_REDIRECT_FIXED_LEN);
|
|
return;
|
|
}
|
|
bp += 2;
|
|
nla_afnum = GET_BE_U_2(bp);
|
|
bp += 2+2;
|
|
switch (nla_afnum) {
|
|
case AFNUM_INET:
|
|
if (opt_len != PGM_OPT_REDIRECT_FIXED_LEN + sizeof(nd_ipv4)) {
|
|
ND_PRINT("[Bad OPT_REDIRECT option, length %u != %u + address size]",
|
|
opt_len, PGM_OPT_REDIRECT_FIXED_LEN);
|
|
return;
|
|
}
|
|
ND_TCHECK_LEN(bp, sizeof(nd_ipv4));
|
|
addrtostr(bp, nla_buf, sizeof(nla_buf));
|
|
bp += sizeof(nd_ipv4);
|
|
opts_len -= PGM_OPT_REDIRECT_FIXED_LEN + sizeof(nd_ipv4);
|
|
break;
|
|
case AFNUM_INET6:
|
|
if (opt_len != PGM_OPT_REDIRECT_FIXED_LEN + sizeof(nd_ipv6)) {
|
|
ND_PRINT("[Bad OPT_REDIRECT option, length %u != %u + address size]",
|
|
opt_len, PGM_OPT_REDIRECT_FIXED_LEN);
|
|
return;
|
|
}
|
|
ND_TCHECK_LEN(bp, sizeof(nd_ipv6));
|
|
addrtostr6(bp, nla_buf, sizeof(nla_buf));
|
|
bp += sizeof(nd_ipv6);
|
|
opts_len -= PGM_OPT_REDIRECT_FIXED_LEN + sizeof(nd_ipv6);
|
|
break;
|
|
default:
|
|
goto trunc;
|
|
break;
|
|
}
|
|
|
|
ND_PRINT(" REDIRECT %s", nla_buf);
|
|
break;
|
|
|
|
case PGM_OPT_PARITY_PRM:
|
|
#define PGM_OPT_PARITY_PRM_LEN (2+2+4)
|
|
if (opt_len != PGM_OPT_PARITY_PRM_LEN) {
|
|
ND_PRINT("[Bad OPT_PARITY_PRM option, length %u != %u]",
|
|
opt_len, PGM_OPT_PARITY_PRM_LEN);
|
|
return;
|
|
}
|
|
bp += 2;
|
|
len = GET_BE_U_4(bp);
|
|
bp += 4;
|
|
ND_PRINT(" PARITY MAXTGS %u", len);
|
|
opts_len -= PGM_OPT_PARITY_PRM_LEN;
|
|
break;
|
|
|
|
case PGM_OPT_PARITY_GRP:
|
|
#define PGM_OPT_PARITY_GRP_LEN (2+2+4)
|
|
if (opt_len != PGM_OPT_PARITY_GRP_LEN) {
|
|
ND_PRINT("[Bad OPT_PARITY_GRP option, length %u != %u]",
|
|
opt_len, PGM_OPT_PARITY_GRP_LEN);
|
|
return;
|
|
}
|
|
bp += 2;
|
|
seq = GET_BE_U_4(bp);
|
|
bp += 4;
|
|
ND_PRINT(" PARITY GROUP %u", seq);
|
|
opts_len -= PGM_OPT_PARITY_GRP_LEN;
|
|
break;
|
|
|
|
case PGM_OPT_CURR_TGSIZE:
|
|
#define PGM_OPT_CURR_TGSIZE_LEN (2+2+4)
|
|
if (opt_len != PGM_OPT_CURR_TGSIZE_LEN) {
|
|
ND_PRINT("[Bad OPT_CURR_TGSIZE option, length %u != %u]",
|
|
opt_len, PGM_OPT_CURR_TGSIZE_LEN);
|
|
return;
|
|
}
|
|
bp += 2;
|
|
len = GET_BE_U_4(bp);
|
|
bp += 4;
|
|
ND_PRINT(" PARITY ATGS %u", len);
|
|
opts_len -= PGM_OPT_CURR_TGSIZE_LEN;
|
|
break;
|
|
|
|
case PGM_OPT_NBR_UNREACH:
|
|
#define PGM_OPT_NBR_UNREACH_LEN (2+2)
|
|
if (opt_len != PGM_OPT_NBR_UNREACH_LEN) {
|
|
ND_PRINT("[Bad OPT_NBR_UNREACH option, length %u != %u]",
|
|
opt_len, PGM_OPT_NBR_UNREACH_LEN);
|
|
return;
|
|
}
|
|
bp += 2;
|
|
ND_PRINT(" NBR_UNREACH");
|
|
opts_len -= PGM_OPT_NBR_UNREACH_LEN;
|
|
break;
|
|
|
|
case PGM_OPT_PATH_NLA:
|
|
ND_PRINT(" PATH_NLA [%u]", opt_len);
|
|
bp += opt_len;
|
|
opts_len -= opt_len;
|
|
break;
|
|
|
|
case PGM_OPT_SYN:
|
|
#define PGM_OPT_SYN_LEN (2+2)
|
|
if (opt_len != PGM_OPT_SYN_LEN) {
|
|
ND_PRINT("[Bad OPT_SYN option, length %u != %u]",
|
|
opt_len, PGM_OPT_SYN_LEN);
|
|
return;
|
|
}
|
|
bp += 2;
|
|
ND_PRINT(" SYN");
|
|
opts_len -= PGM_OPT_SYN_LEN;
|
|
break;
|
|
|
|
case PGM_OPT_FIN:
|
|
#define PGM_OPT_FIN_LEN (2+2)
|
|
if (opt_len != PGM_OPT_FIN_LEN) {
|
|
ND_PRINT("[Bad OPT_FIN option, length %u != %u]",
|
|
opt_len, PGM_OPT_FIN_LEN);
|
|
return;
|
|
}
|
|
bp += 2;
|
|
ND_PRINT(" FIN");
|
|
opts_len -= PGM_OPT_FIN_LEN;
|
|
break;
|
|
|
|
case PGM_OPT_RST:
|
|
#define PGM_OPT_RST_LEN (2+2)
|
|
if (opt_len != PGM_OPT_RST_LEN) {
|
|
ND_PRINT("[Bad OPT_RST option, length %u != %u]",
|
|
opt_len, PGM_OPT_RST_LEN);
|
|
return;
|
|
}
|
|
bp += 2;
|
|
ND_PRINT(" RST");
|
|
opts_len -= PGM_OPT_RST_LEN;
|
|
break;
|
|
|
|
case PGM_OPT_CR:
|
|
ND_PRINT(" CR");
|
|
bp += opt_len;
|
|
opts_len -= opt_len;
|
|
break;
|
|
|
|
case PGM_OPT_CRQST:
|
|
#define PGM_OPT_CRQST_LEN (2+2)
|
|
if (opt_len != PGM_OPT_CRQST_LEN) {
|
|
ND_PRINT("[Bad OPT_CRQST option, length %u != %u]",
|
|
opt_len, PGM_OPT_CRQST_LEN);
|
|
return;
|
|
}
|
|
bp += 2;
|
|
ND_PRINT(" CRQST");
|
|
opts_len -= PGM_OPT_CRQST_LEN;
|
|
break;
|
|
|
|
case PGM_OPT_PGMCC_DATA:
|
|
#define PGM_OPT_PGMCC_DATA_FIXED_LEN (2+2+4+2+2)
|
|
if (opt_len < PGM_OPT_PGMCC_DATA_FIXED_LEN) {
|
|
ND_PRINT("[Bad OPT_PGMCC_DATA option, length %u < %u]",
|
|
opt_len, PGM_OPT_PGMCC_DATA_FIXED_LEN);
|
|
return;
|
|
}
|
|
bp += 2;
|
|
offset = GET_BE_U_4(bp);
|
|
bp += 4;
|
|
nla_afnum = GET_BE_U_2(bp);
|
|
bp += 2+2;
|
|
switch (nla_afnum) {
|
|
case AFNUM_INET:
|
|
if (opt_len != PGM_OPT_PGMCC_DATA_FIXED_LEN + sizeof(nd_ipv4)) {
|
|
ND_PRINT("[Bad OPT_PGMCC_DATA option, length %u != %u + address size]",
|
|
opt_len, PGM_OPT_PGMCC_DATA_FIXED_LEN);
|
|
return;
|
|
}
|
|
ND_TCHECK_LEN(bp, sizeof(nd_ipv4));
|
|
addrtostr(bp, nla_buf, sizeof(nla_buf));
|
|
bp += sizeof(nd_ipv4);
|
|
opts_len -= PGM_OPT_PGMCC_DATA_FIXED_LEN + sizeof(nd_ipv4);
|
|
break;
|
|
case AFNUM_INET6:
|
|
if (opt_len != PGM_OPT_PGMCC_DATA_FIXED_LEN + sizeof(nd_ipv6)) {
|
|
ND_PRINT("[Bad OPT_PGMCC_DATA option, length %u != %u + address size]",
|
|
opt_len, PGM_OPT_PGMCC_DATA_FIXED_LEN);
|
|
return;
|
|
}
|
|
ND_TCHECK_LEN(bp, sizeof(nd_ipv6));
|
|
addrtostr6(bp, nla_buf, sizeof(nla_buf));
|
|
bp += sizeof(nd_ipv6);
|
|
opts_len -= PGM_OPT_PGMCC_DATA_FIXED_LEN + sizeof(nd_ipv6);
|
|
break;
|
|
default:
|
|
goto trunc;
|
|
break;
|
|
}
|
|
|
|
ND_PRINT(" PGMCC DATA %u %s", offset, nla_buf);
|
|
break;
|
|
|
|
case PGM_OPT_PGMCC_FEEDBACK:
|
|
#define PGM_OPT_PGMCC_FEEDBACK_FIXED_LEN (2+2+4+2+2)
|
|
if (opt_len < PGM_OPT_PGMCC_FEEDBACK_FIXED_LEN) {
|
|
ND_PRINT("[Bad PGM_OPT_PGMCC_FEEDBACK option, length %u < %u]",
|
|
opt_len, PGM_OPT_PGMCC_FEEDBACK_FIXED_LEN);
|
|
return;
|
|
}
|
|
bp += 2;
|
|
offset = GET_BE_U_4(bp);
|
|
bp += 4;
|
|
nla_afnum = GET_BE_U_2(bp);
|
|
bp += 2+2;
|
|
switch (nla_afnum) {
|
|
case AFNUM_INET:
|
|
if (opt_len != PGM_OPT_PGMCC_FEEDBACK_FIXED_LEN + sizeof(nd_ipv4)) {
|
|
ND_PRINT("[Bad OPT_PGMCC_FEEDBACK option, length %u != %u + address size]",
|
|
opt_len, PGM_OPT_PGMCC_FEEDBACK_FIXED_LEN);
|
|
return;
|
|
}
|
|
ND_TCHECK_LEN(bp, sizeof(nd_ipv4));
|
|
addrtostr(bp, nla_buf, sizeof(nla_buf));
|
|
bp += sizeof(nd_ipv4);
|
|
opts_len -= PGM_OPT_PGMCC_FEEDBACK_FIXED_LEN + sizeof(nd_ipv4);
|
|
break;
|
|
case AFNUM_INET6:
|
|
if (opt_len != PGM_OPT_PGMCC_FEEDBACK_FIXED_LEN + sizeof(nd_ipv6)) {
|
|
ND_PRINT("[Bad OPT_PGMCC_FEEDBACK option, length %u != %u + address size]",
|
|
opt_len, PGM_OPT_PGMCC_FEEDBACK_FIXED_LEN);
|
|
return;
|
|
}
|
|
ND_TCHECK_LEN(bp, sizeof(nd_ipv6));
|
|
addrtostr6(bp, nla_buf, sizeof(nla_buf));
|
|
bp += sizeof(nd_ipv6);
|
|
opts_len -= PGM_OPT_PGMCC_FEEDBACK_FIXED_LEN + sizeof(nd_ipv6);
|
|
break;
|
|
default:
|
|
goto trunc;
|
|
break;
|
|
}
|
|
|
|
ND_PRINT(" PGMCC FEEDBACK %u %s", offset, nla_buf);
|
|
break;
|
|
|
|
default:
|
|
ND_PRINT(" OPT_%02X [%u] ", opt_type, opt_len);
|
|
bp += opt_len;
|
|
opts_len -= opt_len;
|
|
break;
|
|
}
|
|
|
|
if (opt_type & PGM_OPT_END)
|
|
break;
|
|
}
|
|
}
|
|
|
|
ND_PRINT(" [%u]", length);
|
|
if (ndo->ndo_packettype == PT_PGM_ZMTP1 &&
|
|
(pgm_type_val == PGM_ODATA || pgm_type_val == PGM_RDATA))
|
|
zmtp1_datagram_print(ndo, bp,
|
|
GET_BE_U_2(pgm->pgm_length));
|
|
|
|
return;
|
|
|
|
trunc:
|
|
nd_print_trunc(ndo);
|
|
}
|