* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
+/* \summary: TCP printer */
+
#ifndef lint
#else
__RCSID("$NetBSD: print-tcp.c,v 1.8 2007/07/24 11:53:48 drochner Exp $");
struct tcp_seq_hash {
struct tcp_seq_hash *nxt;
struct tha addr;
- tcp_seq seq;
- tcp_seq ack;
+ uint32_t seq;
+ uint32_t ack;
};
struct tha6 {
struct tcp_seq_hash6 {
struct tcp_seq_hash6 *nxt;
struct tha6 addr;
- tcp_seq seq;
- tcp_seq ack;
+ uint32_t seq;
+ uint32_t ack;
};
#define TSEQ_HASHSIZE 919
{ TCPOPT_CCNEW, "ccnew" },
{ TCPOPT_CCECHO, "" },
{ TCPOPT_SIGNATURE, "md5" },
- { TCPOPT_AUTH, "enhanced auth" },
+ { TCPOPT_SCPS, "scps" },
{ TCPOPT_UTO, "uto" },
+ { TCPOPT_TCPAO, "tcp-ao" },
{ TCPOPT_MPTCP, "mptcp" },
{ TCPOPT_FASTOPEN, "tfo" },
{ TCPOPT_EXPERIMENT2, "exp" },
return;
}
- sport = EXTRACT_16BITS(&tp->th_sport);
- dport = EXTRACT_16BITS(&tp->th_dport);
-
- hlen = TH_OFF(tp) * 4;
+ sport = EXTRACT_BE_U_2(&tp->th_sport);
+ dport = EXTRACT_BE_U_2(&tp->th_dport);
if (ip6) {
if (ip6->ip6_nxt == IPPROTO_TCP) {
tcpport_string(ndo, sport), tcpport_string(ndo, dport)));
}
} else {
- if (ip->ip_p == IPPROTO_TCP) {
+ if (EXTRACT_U_1(ip->ip_p) == IPPROTO_TCP) {
ND_PRINT((ndo, "%s.%s > %s.%s: ",
ipaddr_string(ndo, &ip->ip_src),
tcpport_string(ndo, sport),
}
}
+ ND_TCHECK(*tp);
+
+ hlen = TH_OFF(tp) * 4;
+
if (hlen < sizeof(*tp)) {
ND_PRINT((ndo, " tcp %d [bad hdr length %u - too short, < %lu]",
length - hlen, hlen, (unsigned long)sizeof(*tp)));
return;
}
- ND_TCHECK(*tp);
-
- seq = EXTRACT_32BITS(&tp->th_seq);
- ack = EXTRACT_32BITS(&tp->th_ack);
- win = EXTRACT_16BITS(&tp->th_win);
- urp = EXTRACT_16BITS(&tp->th_urp);
+ seq = EXTRACT_BE_U_4(&tp->th_seq);
+ ack = EXTRACT_BE_U_4(&tp->th_ack);
+ win = EXTRACT_BE_U_2(&tp->th_win);
+ urp = EXTRACT_BE_U_2(&tp->th_urp);
if (ndo->ndo_qflag) {
ND_PRINT((ndo, "tcp %d", length - hlen));
return;
}
- flags = tp->th_flags;
+ flags = EXTRACT_U_1(tp->th_flags);
ND_PRINT((ndo, "Flags [%s]", bittok2str_nosep(tcp_flag_values, "none", flags)));
if (!ndo->ndo_Sflag && (flags & TH_ACK)) {
if (ip6) {
register struct tcp_seq_hash6 *th;
struct tcp_seq_hash6 *tcp_seq_hash;
- const struct in6_addr *src, *dst;
+ const void *src, *dst;
struct tha6 tha;
tcp_seq_hash = tcp_seq_hash6;
- src = &ip6->ip6_src;
- dst = &ip6->ip6_dst;
+ src = (const void *)&ip6->ip6_src;
+ dst = (const void *)&ip6->ip6_dst;
if (sport > dport)
rev = 1;
else if (sport == dport) {
if (IP_V(ip) == 4) {
if (ND_TTEST2(tp->th_sport, length)) {
sum = tcp_cksum(ndo, ip, tp, length);
- tcp_sum = EXTRACT_16BITS(&tp->th_sum);
+ tcp_sum = EXTRACT_BE_U_2(&tp->th_sum);
ND_PRINT((ndo, ", cksum 0x%04x", tcp_sum));
if (sum != 0)
} else if (IP_V(ip) == 6 && ip6->ip6_plen) {
if (ND_TTEST2(tp->th_sport, length)) {
sum = tcp6_cksum(ndo, ip6, tp, length);
- tcp_sum = EXTRACT_16BITS(&tp->th_sum);
+ tcp_sum = EXTRACT_BE_U_2(&tp->th_sum);
ND_PRINT((ndo, ", cksum 0x%04x", tcp_sum));
if (sum != 0)
while (hlen > 0) {
if (ch != '\0')
ND_PRINT((ndo, "%c", ch));
- ND_TCHECK(*cp);
- opt = *cp++;
+ ND_TCHECK_1(cp);
+ opt = EXTRACT_U_1(cp);
+ cp++;
if (ZEROLENOPT(opt))
len = 1;
else {
- ND_TCHECK(*cp);
- len = *cp++; /* total including type, len */
+ ND_TCHECK_1(cp);
+ len = EXTRACT_U_1(cp);
+ cp++; /* total including type, len */
if (len < 2 || len > hlen)
goto bad;
--hlen; /* account for length byte */
case TCPOPT_MAXSEG:
datalen = 2;
LENCHECK(datalen);
- ND_PRINT((ndo, " %u", EXTRACT_16BITS(cp)));
+ ND_PRINT((ndo, " %u", EXTRACT_BE_U_2(cp)));
break;
case TCPOPT_WSCALE:
datalen = 1;
LENCHECK(datalen);
- ND_PRINT((ndo, " %u", *cp));
+ ND_PRINT((ndo, " %u", EXTRACT_U_1(cp)));
break;
case TCPOPT_SACK:
datalen = len - 2;
if (datalen % 8 != 0) {
- ND_PRINT((ndo, "invalid sack"));
+ ND_PRINT((ndo, " invalid sack"));
} else {
uint32_t s, e;
ND_PRINT((ndo, " %d ", datalen / 8));
for (i = 0; i < datalen; i += 8) {
LENCHECK(i + 4);
- s = EXTRACT_32BITS(cp + i);
+ s = EXTRACT_BE_U_4(cp + i);
LENCHECK(i + 8);
- e = EXTRACT_32BITS(cp + i + 4);
+ e = EXTRACT_BE_U_4(cp + i + 4);
if (rev) {
s -= thseq;
e -= thseq;
*/
datalen = 4;
LENCHECK(datalen);
- ND_PRINT((ndo, " %u", EXTRACT_32BITS(cp)));
+ ND_PRINT((ndo, " %u", EXTRACT_BE_U_4(cp)));
break;
case TCPOPT_TIMESTAMP:
datalen = 8;
LENCHECK(datalen);
ND_PRINT((ndo, " val %u ecr %u",
- EXTRACT_32BITS(cp),
- EXTRACT_32BITS(cp + 4)));
+ EXTRACT_BE_U_4(cp),
+ EXTRACT_BE_U_4(cp + 4)));
break;
case TCPOPT_SIGNATURE:
datalen = TCP_SIGLEN;
LENCHECK(datalen);
+ ND_PRINT((ndo, " "));
#ifdef HAVE_LIBCRYPTO
switch (tcp_verify_signature(ndo, ip, tp,
bp + TH_OFF(tp) * 4, length, cp)) {
case CANT_CHECK_SIGNATURE:
ND_PRINT((ndo, "can't check - "));
for (i = 0; i < TCP_SIGLEN; ++i)
- ND_PRINT((ndo, "%02x", cp[i]));
+ ND_PRINT((ndo, "%02x", EXTRACT_U_1(cp + i)));
break;
}
#else
for (i = 0; i < TCP_SIGLEN; ++i)
- ND_PRINT((ndo, "%02x", cp[i]));
+ ND_PRINT((ndo, "%02x", EXTRACT_U_1(cp + i)));
#endif
break;
- case TCPOPT_AUTH:
- ND_PRINT((ndo, "keyid %d", *cp++));
- datalen = len - 3;
- for (i = 0; i < datalen; ++i) {
- LENCHECK(i);
- ND_PRINT((ndo, "%02x", cp[i]));
- }
+ case TCPOPT_SCPS:
+ datalen = 2;
+ LENCHECK(datalen);
+ ND_PRINT((ndo, " cap %02x id %u", EXTRACT_U_1(cp), EXTRACT_U_1(cp + 1)));
break;
+ case TCPOPT_TCPAO:
+ datalen = len - 2;
+ /* RFC 5925 Section 2.2:
+ * "The Length value MUST be greater than or equal to 4."
+ * (This includes the Kind and Length fields already processed
+ * at this point.)
+ */
+ if (datalen < 2) {
+ ND_PRINT((ndo, " invalid"));
+ } else {
+ LENCHECK(1);
+ ND_PRINT((ndo, " keyid %u", EXTRACT_U_1(cp)));
+ LENCHECK(2);
+ ND_PRINT((ndo, " rnextkeyid %u", EXTRACT_U_1(cp + 1)));
+ if (datalen > 2) {
+ ND_PRINT((ndo, " mac 0x"));
+ for (i = 2; i < datalen; i++) {
+ LENCHECK(i + 1);
+ ND_PRINT((ndo, "%02x", EXTRACT_U_1(cp + i)));
+ }
+ }
+ }
+ break;
case TCPOPT_EOL:
case TCPOPT_NOP:
case TCPOPT_UTO:
datalen = 2;
LENCHECK(datalen);
- utoval = EXTRACT_16BITS(cp);
- ND_PRINT((ndo, "0x%x", utoval));
+ utoval = EXTRACT_BE_U_2(cp);
+ ND_PRINT((ndo, " 0x%x", utoval));
if (utoval & 0x0001)
utoval = (utoval >> 1) * 60;
else
case TCPOPT_FASTOPEN:
datalen = len - 2;
LENCHECK(datalen);
+ ND_PRINT((ndo, " "));
print_tcp_fastopen_option(ndo, cp, datalen, FALSE);
break;
if (datalen < 2)
goto bad;
/* RFC6994 */
- magic = EXTRACT_16BITS(cp);
+ magic = EXTRACT_BE_U_2(cp);
ND_PRINT((ndo, "-"));
switch(magic) {
if (datalen)
ND_PRINT((ndo, " 0x"));
for (i = 0; i < datalen; ++i) {
- LENCHECK(i);
- ND_PRINT((ndo, "%02x", cp[i]));
+ LENCHECK(i + 1);
+ ND_PRINT((ndo, "%02x", EXTRACT_U_1(cp + i)));
}
break;
}
} else if (IS_SRC_OR_DST_PORT(SMTP_PORT)) {
ND_PRINT((ndo, ": "));
smtp_print(ndo, bp, length);
+ } else if (IS_SRC_OR_DST_PORT(WHOIS_PORT)) {
+ ND_PRINT((ndo, ": "));
+ txtproto_print(ndo, bp, length, "whois", NULL, 0); /* RFC 3912 */
} else if (IS_SRC_OR_DST_PORT(BGP_PORT))
bgp_print(ndo, bp, length);
else if (IS_SRC_OR_DST_PORT(PPTP_PORT))
* TCP DNS query has 2byte length at the head.
* XXX packet could be unaligned, it can go strange
*/
- ns_print(ndo, bp + 2, length - 2, 0);
+ domain_print(ndo, bp + 2, length - 2, 0);
} else if (IS_SRC_OR_DST_PORT(MSDP_PORT)) {
msdp_print(ndo, bp, length);
} else if (IS_SRC_OR_DST_PORT(RPKI_RTR_PORT)) {
ldp_print(ndo, bp, length);
}
else if ((IS_SRC_OR_DST_PORT(NFS_PORT)) &&
- length >= 4 && ND_TTEST2(*bp, 4)) {
+ length >= 4 && ND_TTEST_4(bp)) {
/*
* If data present, header length valid, and NFS port used,
* assume NFS.
register const struct sunrpc_msg *rp;
enum sunrpc_msg_type direction;
- fraglen = EXTRACT_32BITS(bp) & 0x7FFFFFFF;
+ fraglen = EXTRACT_BE_U_4(bp) & 0x7FFFFFFF;
if (fraglen > (length) - 4)
fraglen = (length) - 4;
rp = (const struct sunrpc_msg *)(bp + 4);
if (ND_TTEST(rp->rm_direction)) {
- direction = (enum sunrpc_msg_type)EXTRACT_32BITS(&rp->rm_direction);
+ direction = (enum sunrpc_msg_type) EXTRACT_BE_U_4(&rp->rm_direction);
if (dport == NFS_PORT && direction == SUNRPC_CALL) {
- ND_PRINT((ndo, ": NFS request xid %u ", EXTRACT_32BITS(&rp->rm_xid)));
- nfsreq_print_noaddr(ndo, (const u_char *)rp, fraglen, (const u_char *)ip);
+ ND_PRINT((ndo, ": NFS request xid %u ", EXTRACT_BE_U_4(&rp->rm_xid)));
+ nfsreq_noaddr_print(ndo, (const u_char *)rp, fraglen, (const u_char *)ip);
return;
}
if (sport == NFS_PORT && direction == SUNRPC_REPLY) {
- ND_PRINT((ndo, ": NFS reply xid %u ", EXTRACT_32BITS(&rp->rm_xid)));
- nfsreply_print_noaddr(ndo, (const u_char *)rp, fraglen, (const u_char *)ip);
+ ND_PRINT((ndo, ": NFS reply xid %u ", EXTRACT_BE_U_4(&rp->rm_xid)));
+ nfsreply_noaddr_print(ndo, (const u_char *)rp, fraglen, (const u_char *)ip);
return;
}
}
}
ND_PRINT((ndo, " "));
while (length-- && sp < ndo->ndo_snapend) {
- c = *sp++;
+ c = EXTRACT_U_1(sp);
+ sp++;
safeputchar(ndo, c);
}
ND_PRINT((ndo, "]"));
} else {
ND_PRINT((ndo, " cookie "));
for (i = 0; i < datalen; ++i)
- ND_PRINT((ndo, "%02x", cp[i]));
+ ND_PRINT((ndo, "%02x", EXTRACT_U_1(cp + i)));
}
}
}
MD5_Update(&ctx, (const char *)&ip->ip_dst, sizeof(ip->ip_dst));
MD5_Update(&ctx, (const char *)&zero_proto, sizeof(zero_proto));
MD5_Update(&ctx, (const char *)&ip->ip_p, sizeof(ip->ip_p));
- tlen = EXTRACT_16BITS(&ip->ip_len) - IP_HL(ip) * 4;
+ tlen = EXTRACT_BE_U_2(&ip->ip_len) - IP_HL(ip) * 4;
tlen = htons(tlen);
MD5_Update(&ctx, (const char *)&tlen, sizeof(tlen));
} else if (IP_V(ip) == 6) {
ip6 = (const struct ip6_hdr *)ip;
MD5_Update(&ctx, (const char *)&ip6->ip6_src, sizeof(ip6->ip6_src));
MD5_Update(&ctx, (const char *)&ip6->ip6_dst, sizeof(ip6->ip6_dst));
- len32 = htonl(EXTRACT_16BITS(&ip6->ip6_plen));
+ len32 = htonl(EXTRACT_BE_U_2(&ip6->ip6_plen));
MD5_Update(&ctx, (const char *)&len32, sizeof(len32));
nxt = 0;
MD5_Update(&ctx, (const char *)&nxt, sizeof(nxt));
projects / tcpdump / blobdiff