__RCSID("$NetBSD: print-tcp.c,v 1.8 2007/07/24 11:53:48 drochner Exp $");
#endif
-#ifdef HAVE_CONFIG_H
#include <config.h>
-#endif
#include "netdissect-stdinc.h"
#include "addrtoname.h"
#include "extract.h"
+#include "diag-control.h"
+
#include "tcp.h"
#include "ip.h"
struct tha {
- struct in_addr src;
- struct in_addr dst;
+ nd_ipv4 src;
+ nd_ipv4 dst;
u_int port;
};
};
struct tha6 {
- struct in6_addr src;
- struct in6_addr dst;
+ nd_ipv6 src;
+ nd_ipv6 dst;
u_int port;
};
{ TCPOPT_TIMESTAMP, "TS" },
{ TCPOPT_CC, "cc" },
{ TCPOPT_CCNEW, "ccnew" },
- { TCPOPT_CCECHO, "" },
+ { TCPOPT_CCECHO, "ccecho" },
{ TCPOPT_SIGNATURE, "md5" },
{ TCPOPT_SCPS, "scps" },
{ TCPOPT_UTO, "uto" },
uint16_t magic;
int rev;
const struct ip6_hdr *ip6;
+ u_int header_len; /* Header length in bytes */
ndo->ndo_protocol = "tcp";
tp = (const struct tcphdr *)bp;
if (!ND_TTEST_2(tp->th_dport)) {
if (ip6) {
ND_PRINT("%s > %s:",
- ip6addr_string(ndo, ip6->ip6_src),
- ip6addr_string(ndo, ip6->ip6_dst));
+ GET_IP6ADDR_STRING(ip6->ip6_src),
+ GET_IP6ADDR_STRING(ip6->ip6_dst));
} else {
ND_PRINT("%s > %s:",
- ipaddr_string(ndo, ip->ip_src),
- ipaddr_string(ndo, ip->ip_dst));
+ GET_IPADDR_STRING(ip->ip_src),
+ GET_IPADDR_STRING(ip->ip_dst));
}
nd_print_trunc(ndo);
return;
}
- sport = EXTRACT_BE_U_2(tp->th_sport);
- dport = EXTRACT_BE_U_2(tp->th_dport);
+ sport = GET_BE_U_2(tp->th_sport);
+ dport = GET_BE_U_2(tp->th_dport);
if (ip6) {
- if (EXTRACT_U_1(ip6->ip6_nxt) == IPPROTO_TCP) {
+ if (GET_U_1(ip6->ip6_nxt) == IPPROTO_TCP) {
ND_PRINT("%s.%s > %s.%s: ",
- ip6addr_string(ndo, ip6->ip6_src),
+ GET_IP6ADDR_STRING(ip6->ip6_src),
tcpport_string(ndo, sport),
- ip6addr_string(ndo, ip6->ip6_dst),
+ GET_IP6ADDR_STRING(ip6->ip6_dst),
tcpport_string(ndo, dport));
} else {
ND_PRINT("%s > %s: ",
tcpport_string(ndo, sport), tcpport_string(ndo, dport));
}
} else {
- if (EXTRACT_U_1(ip->ip_p) == IPPROTO_TCP) {
+ if (GET_U_1(ip->ip_p) == IPPROTO_TCP) {
ND_PRINT("%s.%s > %s.%s: ",
- ipaddr_string(ndo, ip->ip_src),
+ GET_IPADDR_STRING(ip->ip_src),
tcpport_string(ndo, sport),
- ipaddr_string(ndo, ip->ip_dst),
+ GET_IPADDR_STRING(ip->ip_dst),
tcpport_string(ndo, dport));
} else {
ND_PRINT("%s > %s: ",
hlen = TH_OFF(tp) * 4;
if (hlen < sizeof(*tp)) {
- ND_PRINT(" tcp %u [bad hdr length %u - too short, < %lu]",
- length - hlen, hlen, (unsigned long)sizeof(*tp));
+ ND_PRINT(" tcp %u [bad hdr length %u - too short, < %zu]",
+ length - hlen, hlen, sizeof(*tp));
return;
}
- 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);
+ seq = GET_BE_U_4(tp->th_seq);
+ ack = GET_BE_U_4(tp->th_ack);
+ win = GET_BE_U_2(tp->th_win);
+ urp = GET_BE_U_2(tp->th_urp);
if (ndo->ndo_qflag) {
ND_PRINT("tcp %u", length - hlen);
return;
}
- flags = EXTRACT_U_1(tp->th_flags);
+ flags = GET_U_1(tp->th_flags);
ND_PRINT("Flags [%s]", bittok2str_nosep(tcp_flag_values, "none", flags));
if (!ndo->ndo_Sflag && (flags & TH_ACK)) {
if (th->nxt == NULL)
(*ndo->ndo_error)(ndo,
S_ERR_ND_MEM_ALLOC,
- "tcp_print: calloc");
+ "%s: calloc", __func__);
}
th->addr = tha;
if (rev)
if (th->nxt == NULL)
(*ndo->ndo_error)(ndo,
S_ERR_ND_MEM_ALLOC,
- "tcp_print: calloc");
+ "%s: calloc", __func__);
}
th->addr = tha;
if (rev)
if (IP_V(ip) == 4) {
if (ND_TTEST_LEN(tp->th_sport, length)) {
sum = tcp_cksum(ndo, ip, tp, length);
- tcp_sum = EXTRACT_BE_U_2(tp->th_sum);
+ tcp_sum = GET_BE_U_2(tp->th_sum);
ND_PRINT(", cksum 0x%04x", tcp_sum);
if (sum != 0)
else
ND_PRINT(" (correct)");
}
- } else if (IP_V(ip) == 6 && ip6->ip6_plen) {
+ } else if (IP_V(ip) == 6) {
if (ND_TTEST_LEN(tp->th_sport, length)) {
sum = tcp6_cksum(ndo, ip6, tp, length);
- tcp_sum = EXTRACT_BE_U_2(tp->th_sum);
+ tcp_sum = GET_BE_U_2(tp->th_sum);
ND_PRINT(", cksum 0x%04x", tcp_sum);
if (sum != 0)
while (hlen > 0) {
if (ch != '\0')
ND_PRINT("%c", ch);
- ND_TCHECK_1(cp);
- opt = EXTRACT_U_1(cp);
+ opt = GET_U_1(cp);
cp++;
if (ZEROLENOPT(opt))
len = 1;
else {
- ND_TCHECK_1(cp);
- len = EXTRACT_U_1(cp);
+ len = GET_U_1(cp);
cp++; /* total including type, len */
if (len < 2 || len > hlen)
goto bad;
case TCPOPT_MAXSEG:
datalen = 2;
LENCHECK(datalen);
- ND_PRINT(" %u", EXTRACT_BE_U_2(cp));
+ ND_PRINT(" %u", GET_BE_U_2(cp));
break;
case TCPOPT_WSCALE:
datalen = 1;
LENCHECK(datalen);
- ND_PRINT(" %u", EXTRACT_U_1(cp));
+ ND_PRINT(" %u", GET_U_1(cp));
break;
case TCPOPT_SACK:
ND_PRINT(" %u ", datalen / 8);
for (i = 0; i < datalen; i += 8) {
LENCHECK(i + 4);
- s = EXTRACT_BE_U_4(cp + i);
+ s = GET_BE_U_4(cp + i);
LENCHECK(i + 8);
- e = EXTRACT_BE_U_4(cp + i + 4);
+ e = GET_BE_U_4(cp + i + 4);
if (rev) {
s -= thseq;
e -= thseq;
*/
datalen = 4;
LENCHECK(datalen);
- ND_PRINT(" %u", EXTRACT_BE_U_4(cp));
+ ND_PRINT(" %u", GET_BE_U_4(cp));
break;
case TCPOPT_TIMESTAMP:
datalen = 8;
LENCHECK(datalen);
ND_PRINT(" val %u ecr %u",
- EXTRACT_BE_U_4(cp),
- EXTRACT_BE_U_4(cp + 4));
+ GET_BE_U_4(cp),
+ GET_BE_U_4(cp + 4));
break;
case TCPOPT_SIGNATURE:
case CANT_CHECK_SIGNATURE:
ND_PRINT("can't check - ");
for (i = 0; i < TCP_SIGLEN; ++i)
- ND_PRINT("%02x", EXTRACT_U_1(cp + i));
+ ND_PRINT("%02x",
+ GET_U_1(cp + i));
break;
}
#else
for (i = 0; i < TCP_SIGLEN; ++i)
- ND_PRINT("%02x", EXTRACT_U_1(cp + i));
+ ND_PRINT("%02x", GET_U_1(cp + i));
#endif
break;
case TCPOPT_SCPS:
datalen = 2;
LENCHECK(datalen);
- ND_PRINT(" cap %02x id %u", EXTRACT_U_1(cp), EXTRACT_U_1(cp + 1));
+ ND_PRINT(" cap %02x id %u", GET_U_1(cp),
+ GET_U_1(cp + 1));
break;
case TCPOPT_TCPAO:
nd_print_invalid(ndo);
} else {
LENCHECK(1);
- ND_PRINT(" keyid %u", EXTRACT_U_1(cp));
+ ND_PRINT(" keyid %u", GET_U_1(cp));
LENCHECK(2);
- ND_PRINT(" rnextkeyid %u", EXTRACT_U_1(cp + 1));
+ ND_PRINT(" rnextkeyid %u",
+ GET_U_1(cp + 1));
if (datalen > 2) {
ND_PRINT(" mac 0x");
for (i = 2; i < datalen; i++) {
LENCHECK(i + 1);
- ND_PRINT("%02x", EXTRACT_U_1(cp + i));
+ ND_PRINT("%02x",
+ GET_U_1(cp + i));
}
}
}
case TCPOPT_UTO:
datalen = 2;
LENCHECK(datalen);
- utoval = EXTRACT_BE_U_2(cp);
+ utoval = GET_BE_U_2(cp);
ND_PRINT(" 0x%x", utoval);
if (utoval & 0x0001)
utoval = (utoval >> 1) * 60;
break;
case TCPOPT_MPTCP:
+ {
+ const u_char *snapend_save;
+ int ret;
+
datalen = len - 2;
LENCHECK(datalen);
- if (!mptcp_print(ndo, cp-2, len, flags))
+ /* Update the snapend to the end of the option
+ * before calling mptcp_print(). Some options
+ * (MPTCP or others) may be present after a
+ * MPTCP option. This prevents that, in
+ * mptcp_print(), the remaining length < the
+ * remaining caplen.
+ */
+ snapend_save = ndo->ndo_snapend;
+ ndo->ndo_snapend = ND_MIN(cp - 2 + len,
+ ndo->ndo_snapend);
+ ret = mptcp_print(ndo, cp - 2, len, flags);
+ ndo->ndo_snapend = snapend_save;
+ if (!ret)
goto bad;
break;
+ }
case TCPOPT_FASTOPEN:
datalen = len - 2;
if (datalen < 2)
goto bad;
/* RFC6994 */
- magic = EXTRACT_BE_U_2(cp);
+ magic = GET_BE_U_2(cp);
ND_PRINT("-");
switch(magic) {
ND_PRINT(" 0x");
for (i = 0; i < datalen; ++i) {
LENCHECK(i + 1);
- ND_PRINT("%02x", EXTRACT_U_1(cp + i));
+ ND_PRINT("%02x", GET_U_1(cp + i));
}
break;
}
*/
ND_PRINT(", length %u", length);
- if (length <= 0)
+ if (length == 0)
return;
/*
* Decode payload if necessary.
*/
- bp += TH_OFF(tp) * 4;
+ header_len = TH_OFF(tp) * 4;
+ /*
+ * Do a bounds check before decoding the payload.
+ * At least the header data is required.
+ */
+ if (!ND_TTEST_LEN(bp, header_len)) {
+ ND_PRINT(" [remaining caplen(%u) < header length(%u)]",
+ ND_BYTES_AVAILABLE_AFTER(bp), header_len);
+ nd_trunc_longjmp(ndo);
+ }
+ bp += header_len;
if ((flags & TH_RST) && ndo->ndo_vflag) {
print_tcp_rst_data(ndo, bp, length);
return;
case PT_RESP:
resp_print(ndo, bp, length);
break;
+ case PT_DOMAIN:
+ /* over_tcp: TRUE, is_mdns: FALSE */
+ domain_print(ndo, bp, length, TRUE, FALSE);
+ break;
}
return;
}
- if (IS_SRC_OR_DST_PORT(TELNET_PORT)) {
+ if (IS_SRC_OR_DST_PORT(FTP_PORT)) {
+ ND_PRINT(": ");
+ ftp_print(ndo, bp, length);
+ } else if (IS_SRC_OR_DST_PORT(SSH_PORT)) {
+ ssh_print(ndo, bp, length);
+ } else if (IS_SRC_OR_DST_PORT(TELNET_PORT)) {
telnet_print(ndo, bp, length);
} else if (IS_SRC_OR_DST_PORT(SMTP_PORT)) {
ND_PRINT(": ");
smtp_print(ndo, bp, length);
} else if (IS_SRC_OR_DST_PORT(WHOIS_PORT)) {
ND_PRINT(": ");
- ndo->ndo_protocol = "whois"; /* needed by txtproto_print() */
- txtproto_print(ndo, bp, length, 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))
- pptp_print(ndo, bp);
- else if (IS_SRC_OR_DST_PORT(REDIS_PORT))
- resp_print(ndo, bp, length);
+ whois_print(ndo, bp, length);
+ } else if (IS_SRC_OR_DST_PORT(NAMESERVER_PORT)) {
+ /* over_tcp: TRUE, is_mdns: FALSE */
+ domain_print(ndo, bp, length, TRUE, FALSE);
+ } else if (IS_SRC_OR_DST_PORT(HTTP_PORT)) {
+ ND_PRINT(": ");
+ http_print(ndo, bp, length);
#ifdef ENABLE_SMB
- else if (IS_SRC_OR_DST_PORT(NETBIOS_SSN_PORT))
+ } else if (IS_SRC_OR_DST_PORT(NETBIOS_SSN_PORT)) {
nbt_tcp_print(ndo, bp, length);
- else if (IS_SRC_OR_DST_PORT(SMB_PORT))
+#endif
+ } else if (IS_SRC_OR_DST_PORT(BGP_PORT)) {
+ bgp_print(ndo, bp, length);
+ } else if (IS_SRC_OR_DST_PORT(RPKI_RTR_PORT)) {
+ rpki_rtr_print(ndo, bp, length);
+#ifdef ENABLE_SMB
+ } else if (IS_SRC_OR_DST_PORT(SMB_PORT)) {
smb_tcp_print(ndo, bp, length);
#endif
+ } else if (IS_SRC_OR_DST_PORT(RTSP_PORT)) {
+ ND_PRINT(": ");
+ rtsp_print(ndo, bp, length);
+ } else if (IS_SRC_OR_DST_PORT(MSDP_PORT)) {
+ msdp_print(ndo, bp, length);
+ } else if (IS_SRC_OR_DST_PORT(LDP_PORT)) {
+ ldp_print(ndo, bp, length);
+ } else if (IS_SRC_OR_DST_PORT(PPTP_PORT))
+ pptp_print(ndo, bp);
+ else if (IS_SRC_OR_DST_PORT(REDIS_PORT))
+ resp_print(ndo, bp, length);
else if (IS_SRC_OR_DST_PORT(BEEP_PORT))
beep_print(ndo, bp, length);
- else if (IS_SRC_OR_DST_PORT(OPENFLOW_PORT_OLD) || IS_SRC_OR_DST_PORT(OPENFLOW_PORT_IANA))
+ else if (IS_SRC_OR_DST_PORT(OPENFLOW_PORT_OLD) || IS_SRC_OR_DST_PORT(OPENFLOW_PORT_IANA)) {
openflow_print(ndo, bp, length);
- else if (IS_SRC_OR_DST_PORT(FTP_PORT)) {
- ND_PRINT(": ");
- ftp_print(ndo, bp, length);
- } else if (IS_SRC_OR_DST_PORT(HTTP_PORT) || IS_SRC_OR_DST_PORT(HTTP_PORT_ALT)) {
+ } else if (IS_SRC_OR_DST_PORT(HTTP_PORT_ALT)) {
ND_PRINT(": ");
http_print(ndo, bp, length);
- } else if (IS_SRC_OR_DST_PORT(RTSP_PORT) || IS_SRC_OR_DST_PORT(RTSP_PORT_ALT)) {
+ } else if (IS_SRC_OR_DST_PORT(RTSP_PORT_ALT)) {
ND_PRINT(": ");
rtsp_print(ndo, bp, length);
- } else if (length > 2 &&
- (IS_SRC_OR_DST_PORT(NAMESERVER_PORT))) {
- /* domain_print() assumes it does not have to prepend a space before its
- * own output to separate it from the output of the calling function. This
- * works well with udp_print(), but requires a small prop here.
- */
- ND_PRINT(" ");
-
- /*
- * TCP DNS query has 2byte length at the head.
- * XXX packet could be unaligned, it can go strange
- */
- 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)) {
- rpki_rtr_print(ndo, bp, length);
- }
- else if (length > 0 && (IS_SRC_OR_DST_PORT(LDP_PORT))) {
- ldp_print(ndo, bp, length);
- }
- else if ((IS_SRC_OR_DST_PORT(NFS_PORT)) &&
+ } else if ((IS_SRC_OR_DST_PORT(NFS_PORT)) &&
length >= 4 && ND_TTEST_4(bp)) {
/*
* If data present, header length valid, and NFS port used,
const struct sunrpc_msg *rp;
enum sunrpc_msg_type direction;
- fraglen = EXTRACT_BE_U_4(bp) & 0x7FFFFFFF;
+ fraglen = GET_BE_U_4(bp) & 0x7FFFFFFF;
if (fraglen > (length) - 4)
fraglen = (length) - 4;
rp = (const struct sunrpc_msg *)(bp + 4);
if (ND_TTEST_4(rp->rm_direction)) {
- direction = (enum sunrpc_msg_type) EXTRACT_BE_U_4(rp->rm_direction);
+ direction = (enum sunrpc_msg_type) GET_BE_U_4(rp->rm_direction);
if (dport == NFS_PORT && direction == SUNRPC_CALL) {
ND_PRINT(": NFS request xid %u ",
- EXTRACT_BE_U_4(rp->rm_xid));
+ GET_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(": NFS reply xid %u ",
- EXTRACT_BE_U_4(rp->rm_xid));
+ GET_BE_U_4(rp->rm_xid));
nfsreply_noaddr_print(ndo, (const u_char *)rp, fraglen, (const u_char *)ip);
return;
}
}
return;
- bad:
+bad:
ND_PRINT("[bad opt]");
if (ch != '\0')
ND_PRINT("]");
return;
- trunc:
+trunc:
nd_print_trunc(ndo);
if (ch != '\0')
ND_PRINT(">");
}
ND_PRINT(" ");
while (length && sp < ndo->ndo_snapend) {
- c = EXTRACT_U_1(sp);
+ c = GET_U_1(sp);
sp++;
fn_print_char(ndo, c);
length--;
} else {
ND_PRINT(" cookie ");
for (i = 0; i < datalen; ++i)
- ND_PRINT("%02x", EXTRACT_U_1(cp + i));
+ ND_PRINT("%02x", GET_U_1(cp + i));
}
}
}
#ifdef HAVE_LIBCRYPTO
-USES_APPLE_DEPRECATED_API
+DIAG_OFF_DEPRECATION
static int
tcp_verify_signature(netdissect_options *ndo,
const struct ip *ip, const struct tcphdr *tp,
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_BE_U_2(ip->ip_len) - IP_HL(ip) * 4;
+ tlen = GET_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_BE_U_2(ip6->ip6_plen));
+ len32 = htonl(GET_BE_U_2(ip6->ip6_plen));
MD5_Update(&ctx, (const char *)&len32, sizeof(len32));
nxt = 0;
MD5_Update(&ctx, (const char *)&nxt, sizeof(nxt));
else
return (SIGNATURE_INVALID);
}
-USES_APPLE_RST
+DIAG_ON_DEPRECATION
#endif /* HAVE_LIBCRYPTO */
projects / tcpdump / blobdiff