It fixes many buffer overflow in different protocol parsers, but none of them are critical, even in absense of Capsicum. Security: CVE-2016-7922, CVE-2016-7923, CVE-2016-7924, CVE-2016-7925 Security: CVE-2016-7926, CVE-2016-7927, CVE-2016-7928, CVE-2016-7929 Security: CVE-2016-7930, CVE-2016-7931, CVE-2016-7932, CVE-2016-7933 Security: CVE-2016-7934, CVE-2016-7935, CVE-2016-7936, CVE-2016-7937 Security: CVE-2016-7938, CVE-2016-7939, CVE-2016-7940, CVE-2016-7973 Security: CVE-2016-7974, CVE-2016-7975, CVE-2016-7983, CVE-2016-7984 Security: CVE-2016-7985, CVE-2016-7986, CVE-2016-7992, CVE-2016-7993 Security: CVE-2016-8574, CVE-2016-8575, CVE-2017-5202, CVE-2017-5203 Security: CVE-2017-5204, CVE-2017-5205, CVE-2017-5341, CVE-2017-5342 Security: CVE-2017-5482, CVE-2017-5483, CVE-2017-5484, CVE-2017-5485 Security: CVE-2017-5486
785 lines
20 KiB
C
785 lines
20 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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uint16_t pgm_sport;
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uint16_t pgm_dport;
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uint8_t pgm_type;
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uint8_t pgm_options;
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uint16_t pgm_sum;
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uint8_t pgm_gsid[6];
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uint16_t pgm_length;
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};
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struct pgm_spm {
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uint32_t pgms_seq;
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uint32_t pgms_trailseq;
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uint32_t pgms_leadseq;
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uint16_t pgms_nla_afi;
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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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uint32_t pgmn_seq;
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uint16_t pgmn_source_afi;
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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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uint32_t pgma_rx_max_seq;
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uint32_t pgma_bitmap;
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/* ... options */
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};
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struct pgm_poll {
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uint32_t pgmp_seq;
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uint16_t pgmp_round;
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uint16_t pgmp_reserved;
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/* ... options */
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};
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struct pgm_polr {
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uint32_t pgmp_seq;
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uint16_t pgmp_round;
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uint16_t pgmp_subtype;
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uint16_t pgmp_nla_afi;
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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_data {
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uint32_t pgmd_seq;
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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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register const u_char *bp, register u_int length,
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register const u_char *bp2)
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{
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register const struct pgm_header *pgm;
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register const struct ip *ip;
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register char ch;
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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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register 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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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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ch = '\0';
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if (!ND_TTEST(pgm->pgm_dport)) {
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if (ip6) {
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ND_PRINT((ndo, "%s > %s: [|pgm]",
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ip6addr_string(ndo, &ip6->ip6_src),
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ip6addr_string(ndo, &ip6->ip6_dst)));
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return;
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} else {
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ND_PRINT((ndo, "%s > %s: [|pgm]",
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ipaddr_string(ndo, &ip->ip_src),
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ipaddr_string(ndo, &ip->ip_dst)));
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return;
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}
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}
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sport = EXTRACT_16BITS(&pgm->pgm_sport);
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dport = EXTRACT_16BITS(&pgm->pgm_dport);
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if (ip6) {
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if (ip6->ip6_nxt == IPPROTO_PGM) {
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ND_PRINT((ndo, "%s.%s > %s.%s: ",
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ip6addr_string(ndo, &ip6->ip6_src),
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tcpport_string(ndo, sport),
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ip6addr_string(ndo, &ip6->ip6_dst),
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tcpport_string(ndo, dport)));
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} else {
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ND_PRINT((ndo, "%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 (ip->ip_p == IPPROTO_PGM) {
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ND_PRINT((ndo, "%s.%s > %s.%s: ",
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ipaddr_string(ndo, &ip->ip_src),
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tcpport_string(ndo, sport),
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ipaddr_string(ndo, &ip->ip_dst),
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tcpport_string(ndo, dport)));
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} else {
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ND_PRINT((ndo, "%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(*pgm);
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ND_PRINT((ndo, "PGM, length %u", EXTRACT_16BITS(&pgm->pgm_length)));
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if (!ndo->ndo_vflag)
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return;
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ND_PRINT((ndo, " 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->pgm_type) {
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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(*spm);
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bp = (const u_char *) (spm + 1);
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switch (EXTRACT_16BITS(&spm->pgms_nla_afi)) {
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case AFNUM_INET:
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ND_TCHECK2(*bp, sizeof(struct in_addr));
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addrtostr(bp, nla_buf, sizeof(nla_buf));
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bp += sizeof(struct in_addr);
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break;
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case AFNUM_INET6:
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ND_TCHECK2(*bp, sizeof(struct in6_addr));
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addrtostr6(bp, nla_buf, sizeof(nla_buf));
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bp += sizeof(struct in6_addr);
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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((ndo, "SPM seq %u trail %u lead %u nla %s",
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EXTRACT_32BITS(&spm->pgms_seq),
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EXTRACT_32BITS(&spm->pgms_trailseq),
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EXTRACT_32BITS(&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 *poll_msg;
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poll_msg = (const struct pgm_poll *)(pgm + 1);
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ND_TCHECK(*poll_msg);
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ND_PRINT((ndo, "POLL seq %u round %u",
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EXTRACT_32BITS(&poll_msg->pgmp_seq),
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EXTRACT_16BITS(&poll_msg->pgmp_round)));
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bp = (const u_char *) (poll_msg + 1);
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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;
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uint32_t ivl, rnd, mask;
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polr = (const struct pgm_polr *)(pgm + 1);
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ND_TCHECK(*polr);
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bp = (const u_char *) (polr + 1);
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switch (EXTRACT_16BITS(&polr->pgmp_nla_afi)) {
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case AFNUM_INET:
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ND_TCHECK2(*bp, sizeof(struct in_addr));
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addrtostr(bp, nla_buf, sizeof(nla_buf));
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bp += sizeof(struct in_addr);
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break;
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case AFNUM_INET6:
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ND_TCHECK2(*bp, sizeof(struct in6_addr));
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addrtostr6(bp, nla_buf, sizeof(nla_buf));
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bp += sizeof(struct in6_addr);
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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_TCHECK2(*bp, sizeof(uint32_t));
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ivl = EXTRACT_32BITS(bp);
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bp += sizeof(uint32_t);
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ND_TCHECK2(*bp, sizeof(uint32_t));
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rnd = EXTRACT_32BITS(bp);
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bp += sizeof(uint32_t);
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ND_TCHECK2(*bp, sizeof(uint32_t));
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mask = EXTRACT_32BITS(bp);
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bp += sizeof(uint32_t);
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ND_PRINT((ndo, "POLR seq %u round %u nla %s ivl %u rnd 0x%08x "
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"mask 0x%08x", EXTRACT_32BITS(&polr->pgmp_seq),
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EXTRACT_16BITS(&polr->pgmp_round), nla_buf, ivl, rnd, mask));
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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(*odata);
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ND_PRINT((ndo, "ODATA trail %u seq %u",
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EXTRACT_32BITS(&odata->pgmd_trailseq),
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EXTRACT_32BITS(&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(*rdata);
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ND_PRINT((ndo, "RDATA trail %u seq %u",
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EXTRACT_32BITS(&rdata->pgmd_trailseq),
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EXTRACT_32BITS(&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(*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 (EXTRACT_16BITS(&nak->pgmn_source_afi)) {
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case AFNUM_INET:
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ND_TCHECK2(*bp, sizeof(struct in_addr));
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addrtostr(bp, source_buf, sizeof(source_buf));
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bp += sizeof(struct in_addr);
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break;
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case AFNUM_INET6:
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ND_TCHECK2(*bp, sizeof(struct in6_addr));
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addrtostr6(bp, source_buf, sizeof(source_buf));
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bp += sizeof(struct in6_addr);
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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 (EXTRACT_16BITS(bp)) {
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case AFNUM_INET:
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ND_TCHECK2(*bp, sizeof(struct in_addr));
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addrtostr(bp, group_buf, sizeof(group_buf));
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bp += sizeof(struct in_addr);
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break;
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case AFNUM_INET6:
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ND_TCHECK2(*bp, sizeof(struct in6_addr));
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addrtostr6(bp, group_buf, sizeof(group_buf));
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bp += sizeof(struct in6_addr);
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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->pgm_type) {
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case PGM_NAK:
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ND_PRINT((ndo, "NAK "));
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break;
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case PGM_NULLNAK:
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ND_PRINT((ndo, "NNAK "));
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break;
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case PGM_NCF:
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ND_PRINT((ndo, "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((ndo, "(%s -> %s), seq %u",
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source_buf, group_buf, EXTRACT_32BITS(&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(*ack);
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ND_PRINT((ndo, "ACK seq %u",
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EXTRACT_32BITS(&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((ndo, "SPMR"));
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break;
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default:
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ND_PRINT((ndo, "UNKNOWN type 0x%02x", pgm->pgm_type));
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break;
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}
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if (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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if (!ND_TTEST2(*bp, PGM_MIN_OPT_LEN)) {
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ND_PRINT((ndo, "[|OPT]"));
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return;
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}
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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 = *bp++;
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if ((opt_type & PGM_OPT_MASK) != PGM_OPT_LENGTH) {
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ND_PRINT((ndo, "[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 = *bp++;
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if (opt_len != 4) {
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ND_PRINT((ndo, "[Bad OPT_LENGTH option, length %u != 4]", opt_len));
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return;
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}
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opts_len = EXTRACT_16BITS(bp);
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if (opts_len < 4) {
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ND_PRINT((ndo, "[Bad total option length %u < 4]", opts_len));
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return;
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}
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bp += sizeof(uint16_t);
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ND_PRINT((ndo, " OPTS LEN %d", 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((ndo, "[Total option length leaves no room for final option]"));
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return;
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}
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opt_type = *bp++;
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opt_len = *bp++;
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if (opt_len < PGM_MIN_OPT_LEN) {
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ND_PRINT((ndo, "[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((ndo, "[Total option length leaves no room for final option]"));
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return;
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}
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if (!ND_TTEST2(*bp, opt_len - 2)) {
|
|
ND_PRINT((ndo, " [|OPT]"));
|
|
return;
|
|
}
|
|
|
|
switch (opt_type & PGM_OPT_MASK) {
|
|
case PGM_OPT_LENGTH:
|
|
if (opt_len != 4) {
|
|
ND_PRINT((ndo, "[Bad OPT_LENGTH option, length %u != 4]", opt_len));
|
|
return;
|
|
}
|
|
ND_PRINT((ndo, " OPTS LEN (extra?) %d", EXTRACT_16BITS(bp)));
|
|
bp += sizeof(uint16_t);
|
|
opts_len -= 4;
|
|
break;
|
|
|
|
case PGM_OPT_FRAGMENT:
|
|
if (opt_len != 16) {
|
|
ND_PRINT((ndo, "[Bad OPT_FRAGMENT option, length %u != 16]", opt_len));
|
|
return;
|
|
}
|
|
bp += 2;
|
|
seq = EXTRACT_32BITS(bp);
|
|
bp += sizeof(uint32_t);
|
|
offset = EXTRACT_32BITS(bp);
|
|
bp += sizeof(uint32_t);
|
|
len = EXTRACT_32BITS(bp);
|
|
bp += sizeof(uint32_t);
|
|
ND_PRINT((ndo, " FRAG seq %u off %u len %u", seq, offset, len));
|
|
opts_len -= 16;
|
|
break;
|
|
|
|
case PGM_OPT_NAK_LIST:
|
|
bp += 2;
|
|
opt_len -= sizeof(uint32_t); /* option header */
|
|
ND_PRINT((ndo, " NAK LIST"));
|
|
while (opt_len) {
|
|
if (opt_len < sizeof(uint32_t)) {
|
|
ND_PRINT((ndo, "[Option length not a multiple of 4]"));
|
|
return;
|
|
}
|
|
ND_TCHECK2(*bp, sizeof(uint32_t));
|
|
ND_PRINT((ndo, " %u", EXTRACT_32BITS(bp)));
|
|
bp += sizeof(uint32_t);
|
|
opt_len -= sizeof(uint32_t);
|
|
opts_len -= sizeof(uint32_t);
|
|
}
|
|
break;
|
|
|
|
case PGM_OPT_JOIN:
|
|
if (opt_len != 8) {
|
|
ND_PRINT((ndo, "[Bad OPT_JOIN option, length %u != 8]", opt_len));
|
|
return;
|
|
}
|
|
bp += 2;
|
|
seq = EXTRACT_32BITS(bp);
|
|
bp += sizeof(uint32_t);
|
|
ND_PRINT((ndo, " JOIN %u", seq));
|
|
opts_len -= 8;
|
|
break;
|
|
|
|
case PGM_OPT_NAK_BO_IVL:
|
|
if (opt_len != 12) {
|
|
ND_PRINT((ndo, "[Bad OPT_NAK_BO_IVL option, length %u != 12]", opt_len));
|
|
return;
|
|
}
|
|
bp += 2;
|
|
offset = EXTRACT_32BITS(bp);
|
|
bp += sizeof(uint32_t);
|
|
seq = EXTRACT_32BITS(bp);
|
|
bp += sizeof(uint32_t);
|
|
ND_PRINT((ndo, " BACKOFF ivl %u ivlseq %u", offset, seq));
|
|
opts_len -= 12;
|
|
break;
|
|
|
|
case PGM_OPT_NAK_BO_RNG:
|
|
if (opt_len != 12) {
|
|
ND_PRINT((ndo, "[Bad OPT_NAK_BO_RNG option, length %u != 12]", opt_len));
|
|
return;
|
|
}
|
|
bp += 2;
|
|
offset = EXTRACT_32BITS(bp);
|
|
bp += sizeof(uint32_t);
|
|
seq = EXTRACT_32BITS(bp);
|
|
bp += sizeof(uint32_t);
|
|
ND_PRINT((ndo, " BACKOFF max %u min %u", offset, seq));
|
|
opts_len -= 12;
|
|
break;
|
|
|
|
case PGM_OPT_REDIRECT:
|
|
bp += 2;
|
|
nla_afnum = EXTRACT_16BITS(bp);
|
|
bp += (2 * sizeof(uint16_t));
|
|
switch (nla_afnum) {
|
|
case AFNUM_INET:
|
|
if (opt_len != 4 + sizeof(struct in_addr)) {
|
|
ND_PRINT((ndo, "[Bad OPT_REDIRECT option, length %u != 4 + address size]", opt_len));
|
|
return;
|
|
}
|
|
ND_TCHECK2(*bp, sizeof(struct in_addr));
|
|
addrtostr(bp, nla_buf, sizeof(nla_buf));
|
|
bp += sizeof(struct in_addr);
|
|
opts_len -= 4 + sizeof(struct in_addr);
|
|
break;
|
|
case AFNUM_INET6:
|
|
if (opt_len != 4 + sizeof(struct in6_addr)) {
|
|
ND_PRINT((ndo, "[Bad OPT_REDIRECT option, length %u != 4 + address size]", opt_len));
|
|
return;
|
|
}
|
|
ND_TCHECK2(*bp, sizeof(struct in6_addr));
|
|
addrtostr6(bp, nla_buf, sizeof(nla_buf));
|
|
bp += sizeof(struct in6_addr);
|
|
opts_len -= 4 + sizeof(struct in6_addr);
|
|
break;
|
|
default:
|
|
goto trunc;
|
|
break;
|
|
}
|
|
|
|
ND_PRINT((ndo, " REDIRECT %s", nla_buf));
|
|
break;
|
|
|
|
case PGM_OPT_PARITY_PRM:
|
|
if (opt_len != 8) {
|
|
ND_PRINT((ndo, "[Bad OPT_PARITY_PRM option, length %u != 8]", opt_len));
|
|
return;
|
|
}
|
|
bp += 2;
|
|
len = EXTRACT_32BITS(bp);
|
|
bp += sizeof(uint32_t);
|
|
ND_PRINT((ndo, " PARITY MAXTGS %u", len));
|
|
opts_len -= 8;
|
|
break;
|
|
|
|
case PGM_OPT_PARITY_GRP:
|
|
if (opt_len != 8) {
|
|
ND_PRINT((ndo, "[Bad OPT_PARITY_GRP option, length %u != 8]", opt_len));
|
|
return;
|
|
}
|
|
bp += 2;
|
|
seq = EXTRACT_32BITS(bp);
|
|
bp += sizeof(uint32_t);
|
|
ND_PRINT((ndo, " PARITY GROUP %u", seq));
|
|
opts_len -= 8;
|
|
break;
|
|
|
|
case PGM_OPT_CURR_TGSIZE:
|
|
if (opt_len != 8) {
|
|
ND_PRINT((ndo, "[Bad OPT_CURR_TGSIZE option, length %u != 8]", opt_len));
|
|
return;
|
|
}
|
|
bp += 2;
|
|
len = EXTRACT_32BITS(bp);
|
|
bp += sizeof(uint32_t);
|
|
ND_PRINT((ndo, " PARITY ATGS %u", len));
|
|
opts_len -= 8;
|
|
break;
|
|
|
|
case PGM_OPT_NBR_UNREACH:
|
|
if (opt_len != 4) {
|
|
ND_PRINT((ndo, "[Bad OPT_NBR_UNREACH option, length %u != 4]", opt_len));
|
|
return;
|
|
}
|
|
bp += 2;
|
|
ND_PRINT((ndo, " NBR_UNREACH"));
|
|
opts_len -= 4;
|
|
break;
|
|
|
|
case PGM_OPT_PATH_NLA:
|
|
ND_PRINT((ndo, " PATH_NLA [%d]", opt_len));
|
|
bp += opt_len;
|
|
opts_len -= opt_len;
|
|
break;
|
|
|
|
case PGM_OPT_SYN:
|
|
if (opt_len != 4) {
|
|
ND_PRINT((ndo, "[Bad OPT_SYN option, length %u != 4]", opt_len));
|
|
return;
|
|
}
|
|
bp += 2;
|
|
ND_PRINT((ndo, " SYN"));
|
|
opts_len -= 4;
|
|
break;
|
|
|
|
case PGM_OPT_FIN:
|
|
if (opt_len != 4) {
|
|
ND_PRINT((ndo, "[Bad OPT_FIN option, length %u != 4]", opt_len));
|
|
return;
|
|
}
|
|
bp += 2;
|
|
ND_PRINT((ndo, " FIN"));
|
|
opts_len -= 4;
|
|
break;
|
|
|
|
case PGM_OPT_RST:
|
|
if (opt_len != 4) {
|
|
ND_PRINT((ndo, "[Bad OPT_RST option, length %u != 4]", opt_len));
|
|
return;
|
|
}
|
|
bp += 2;
|
|
ND_PRINT((ndo, " RST"));
|
|
opts_len -= 4;
|
|
break;
|
|
|
|
case PGM_OPT_CR:
|
|
ND_PRINT((ndo, " CR"));
|
|
bp += opt_len;
|
|
opts_len -= opt_len;
|
|
break;
|
|
|
|
case PGM_OPT_CRQST:
|
|
if (opt_len != 4) {
|
|
ND_PRINT((ndo, "[Bad OPT_CRQST option, length %u != 4]", opt_len));
|
|
return;
|
|
}
|
|
bp += 2;
|
|
ND_PRINT((ndo, " CRQST"));
|
|
opts_len -= 4;
|
|
break;
|
|
|
|
case PGM_OPT_PGMCC_DATA:
|
|
bp += 2;
|
|
offset = EXTRACT_32BITS(bp);
|
|
bp += sizeof(uint32_t);
|
|
nla_afnum = EXTRACT_16BITS(bp);
|
|
bp += (2 * sizeof(uint16_t));
|
|
switch (nla_afnum) {
|
|
case AFNUM_INET:
|
|
if (opt_len != 12 + sizeof(struct in_addr)) {
|
|
ND_PRINT((ndo, "[Bad OPT_PGMCC_DATA option, length %u != 12 + address size]", opt_len));
|
|
return;
|
|
}
|
|
ND_TCHECK2(*bp, sizeof(struct in_addr));
|
|
addrtostr(bp, nla_buf, sizeof(nla_buf));
|
|
bp += sizeof(struct in_addr);
|
|
opts_len -= 12 + sizeof(struct in_addr);
|
|
break;
|
|
case AFNUM_INET6:
|
|
if (opt_len != 12 + sizeof(struct in6_addr)) {
|
|
ND_PRINT((ndo, "[Bad OPT_PGMCC_DATA option, length %u != 12 + address size]", opt_len));
|
|
return;
|
|
}
|
|
ND_TCHECK2(*bp, sizeof(struct in6_addr));
|
|
addrtostr6(bp, nla_buf, sizeof(nla_buf));
|
|
bp += sizeof(struct in6_addr);
|
|
opts_len -= 12 + sizeof(struct in6_addr);
|
|
break;
|
|
default:
|
|
goto trunc;
|
|
break;
|
|
}
|
|
|
|
ND_PRINT((ndo, " PGMCC DATA %u %s", offset, nla_buf));
|
|
break;
|
|
|
|
case PGM_OPT_PGMCC_FEEDBACK:
|
|
bp += 2;
|
|
offset = EXTRACT_32BITS(bp);
|
|
bp += sizeof(uint32_t);
|
|
nla_afnum = EXTRACT_16BITS(bp);
|
|
bp += (2 * sizeof(uint16_t));
|
|
switch (nla_afnum) {
|
|
case AFNUM_INET:
|
|
if (opt_len != 12 + sizeof(struct in_addr)) {
|
|
ND_PRINT((ndo, "[Bad OPT_PGMCC_DATA option, length %u != 12 + address size]", opt_len));
|
|
return;
|
|
}
|
|
ND_TCHECK2(*bp, sizeof(struct in_addr));
|
|
addrtostr(bp, nla_buf, sizeof(nla_buf));
|
|
bp += sizeof(struct in_addr);
|
|
opts_len -= 12 + sizeof(struct in_addr);
|
|
break;
|
|
case AFNUM_INET6:
|
|
if (opt_len != 12 + sizeof(struct in6_addr)) {
|
|
ND_PRINT((ndo, "[Bad OPT_PGMCC_DATA option, length %u != 12 + address size]", opt_len));
|
|
return;
|
|
}
|
|
ND_TCHECK2(*bp, sizeof(struct in6_addr));
|
|
addrtostr6(bp, nla_buf, sizeof(nla_buf));
|
|
bp += sizeof(struct in6_addr);
|
|
opts_len -= 12 + sizeof(struct in6_addr);
|
|
break;
|
|
default:
|
|
goto trunc;
|
|
break;
|
|
}
|
|
|
|
ND_PRINT((ndo, " PGMCC FEEDBACK %u %s", offset, nla_buf));
|
|
break;
|
|
|
|
default:
|
|
ND_PRINT((ndo, " OPT_%02X [%d] ", opt_type, opt_len));
|
|
bp += opt_len;
|
|
opts_len -= opt_len;
|
|
break;
|
|
}
|
|
|
|
if (opt_type & PGM_OPT_END)
|
|
break;
|
|
}
|
|
}
|
|
|
|
ND_PRINT((ndo, " [%u]", length));
|
|
if (ndo->ndo_packettype == PT_PGM_ZMTP1 &&
|
|
(pgm->pgm_type == PGM_ODATA || pgm->pgm_type == PGM_RDATA))
|
|
zmtp1_print_datagram(ndo, bp, EXTRACT_16BITS(&pgm->pgm_length));
|
|
|
|
return;
|
|
|
|
trunc:
|
|
ND_PRINT((ndo, "[|pgm]"));
|
|
if (ch != '\0')
|
|
ND_PRINT((ndo, ">"));
|
|
}
|