__RCSID("$NetBSD: print-tcp.c,v 1.8 2007/07/24 11:53:48 drochner Exp $");
#endif
-#define NETDISSECT_REWORKED
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#endif
static void print_tcp_rst_data(netdissect_options *, register const u_char *sp, u_int length);
+static void print_tcp_fastopen_option(netdissect_options *ndo, register const u_char *cp,
+ u_int datalen, int exp);
#define MAX_RST_DATA_LEN 30
{ TCPOPT_AUTH, "enhanced auth" },
{ TCPOPT_UTO, "uto" },
{ TCPOPT_MPTCP, "mptcp" },
+ { TCPOPT_FASTOPEN, "tfo" },
{ TCPOPT_EXPERIMENT2, "exp" },
{ 0, NULL }
};
register const struct tcphdr *tp,
register u_int len)
{
- return nextproto4_cksum(ndo, ip, (const u_int8_t *)tp, len, len,
+ return nextproto4_cksum(ndo, ip, (const uint8_t *)tp, len, len,
IPPROTO_TCP);
}
register u_char flags;
register u_int hlen;
register char ch;
- u_int16_t sport, dport, win, urp;
- u_int32_t seq, ack, thseq, thack;
+ uint16_t sport, dport, win, urp;
+ uint32_t seq, ack, thseq, thack;
u_int utoval;
- u_int16_t magic;
+ uint16_t magic;
register int rev;
#ifdef INET6
register const struct ip6_hdr *ip6;
#endif
- tp = (struct tcphdr *)bp;
- ip = (struct ip *)bp2;
+ tp = (const struct tcphdr *)bp;
+ ip = (const struct ip *)bp2;
#ifdef INET6
if (IP_V(ip) == 6)
- ip6 = (struct ip6_hdr *)bp2;
+ ip6 = (const struct ip6_hdr *)bp2;
else
ip6 = NULL;
#endif /*INET6*/
ch = '\0';
if (!ND_TTEST(tp->th_dport)) {
ND_PRINT((ndo, "%s > %s: [|tcp]",
- ipaddr_string(&ip->ip_src),
- ipaddr_string(&ip->ip_dst)));
+ ipaddr_string(ndo, &ip->ip_src),
+ ipaddr_string(ndo, &ip->ip_dst)));
return;
}
if (ip6) {
if (ip6->ip6_nxt == IPPROTO_TCP) {
ND_PRINT((ndo, "%s.%s > %s.%s: ",
- ip6addr_string(&ip6->ip6_src),
+ ip6addr_string(ndo, &ip6->ip6_src),
tcpport_string(sport),
- ip6addr_string(&ip6->ip6_dst),
+ ip6addr_string(ndo, &ip6->ip6_dst),
tcpport_string(dport)));
} else {
ND_PRINT((ndo, "%s > %s: ",
{
if (ip->ip_p == IPPROTO_TCP) {
ND_PRINT((ndo, "%s.%s > %s.%s: ",
- ipaddr_string(&ip->ip_src),
+ ipaddr_string(ndo, &ip->ip_src),
tcpport_string(sport),
- ipaddr_string(&ip->ip_dst),
+ ipaddr_string(ndo, &ip->ip_dst),
tcpport_string(dport)));
} else {
ND_PRINT((ndo, "%s > %s: ",
if (ndo->ndo_vflag && !ndo->ndo_Kflag && !fragmented) {
/* Check the checksum, if possible. */
- u_int16_t sum, tcp_sum;
+ uint16_t sum, tcp_sum;
if (IP_V(ip) == 4) {
if (ND_TTEST2(tp->th_sport, length)) {
#ifdef INET6
else if (IP_V(ip) == 6 && ip6->ip6_plen) {
if (ND_TTEST2(tp->th_sport, length)) {
- sum = nextproto6_cksum(ip6, (const u_int8_t *)tp,
+ sum = nextproto6_cksum(ip6, (const uint8_t *)tp,
length, length, IPPROTO_TCP);
tcp_sum = EXTRACT_16BITS(&tp->th_sum);
if (datalen % 8 != 0) {
ND_PRINT((ndo, "malformed sack"));
} else {
- u_int32_t s, e;
+ uint32_t s, e;
ND_PRINT((ndo, " %d ", datalen / 8));
for (i = 0; i < datalen; i += 8) {
goto bad;
break;
+ case TCPOPT_FASTOPEN:
+ datalen = len - 2;
+ LENCHECK(datalen);
+ print_tcp_fastopen_option(ndo, cp, datalen, FALSE);
+ break;
+
case TCPOPT_EXPERIMENT2:
datalen = len - 2;
LENCHECK(datalen);
switch(magic) {
- case 0xf989:
- /* TCP Fast Open: draft-ietf-tcpm-fastopen-04 */
- if (datalen == 2) {
- /* Fast Open Cookie Request */
- ND_PRINT((ndo, "tfo cookiereq"));
- } else {
- /* Fast Open Cookie */
- if (datalen % 2 != 0 || datalen < 6 || datalen > 18) {
- ND_PRINT((ndo, "tfo malformed"));
- } else {
- ND_PRINT((ndo, "tfo cookie "));
- for (i = 2; i < datalen; ++i)
- ND_PRINT((ndo, "%02x", cp[i]));
- }
- }
+ case 0xf989: /* TCP Fast Open RFC 7413 */
+ print_tcp_fastopen_option(ndo, cp + 2, datalen - 2, TRUE);
break;
default:
}
if (sport == TELNET_PORT || dport == TELNET_PORT) {
- if (!ndo->ndo_qflag && ndo->ndo_vflag)
- telnet_print(ndo, bp, length);
+ telnet_print(ndo, bp, length);
+ } else if (sport == SMTP_PORT || dport == SMTP_PORT) {
+ ND_PRINT((ndo, ": "));
+ smtp_print(ndo, bp, length);
} else if (sport == BGP_PORT || dport == BGP_PORT)
bgp_print(ndo, bp, length);
else if (sport == PPTP_PORT || dport == PPTP_PORT)
else if (sport == OPENFLOW_PORT_OLD || dport == OPENFLOW_PORT_OLD ||
sport == OPENFLOW_PORT_IANA || dport == OPENFLOW_PORT_IANA)
openflow_print(ndo, bp, length);
- else if (length > 2 &&
+ else if (sport == FTP_PORT || dport == FTP_PORT) {
+ ND_PRINT((ndo, ": "));
+ ftp_print(ndo, bp, length);
+ } else if (sport == HTTP_PORT || dport == HTTP_PORT ||
+ sport == HTTP_PORT_ALT || dport == HTTP_PORT_ALT) {
+ ND_PRINT((ndo, ": "));
+ http_print(ndo, bp, length);
+ } else if (sport == RTSP_PORT || dport == RTSP_PORT ||
+ sport == RTSP_PORT_ALT || dport == RTSP_PORT_ALT) {
+ ND_PRINT((ndo, ": "));
+ rtsp_print(ndo, bp, length);
+ } else if (length > 2 &&
(sport == NAMESERVER_PORT || dport == NAMESERVER_PORT ||
sport == MULTICASTDNS_PORT || dport == MULTICASTDNS_PORT)) {
/*
* Pass offset of data plus 4 bytes for RPC TCP msg length
* to NFS print routines.
*/
- u_int32_t fraglen;
- register struct sunrpc_msg *rp;
+ uint32_t fraglen;
+ register const struct sunrpc_msg *rp;
enum sunrpc_msg_type direction;
fraglen = EXTRACT_32BITS(bp) & 0x7FFFFFFF;
if (fraglen > (length) - 4)
fraglen = (length) - 4;
- rp = (struct sunrpc_msg *)(bp + 4);
+ rp = (const struct sunrpc_msg *)(bp + 4);
if (ND_TTEST(rp->rm_direction)) {
direction = (enum sunrpc_msg_type)EXTRACT_32BITS(&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, (u_char *)rp, fraglen, (u_char *)ip);
+ nfsreq_print_noaddr(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, (u_char *)rp, fraglen, (u_char *)ip);
+ nfsreply_print_noaddr(ndo, (const u_char *)rp, fraglen, (const u_char *)ip);
return;
}
}
ND_PRINT((ndo, "]"));
}
+static void
+print_tcp_fastopen_option(netdissect_options *ndo, register const u_char *cp,
+ u_int datalen, int exp)
+{
+ u_int i;
+
+ if (exp)
+ ND_PRINT((ndo, "tfo"));
+
+ if (datalen == 0) {
+ /* Fast Open Cookie Request */
+ ND_PRINT((ndo, " cookiereq"));
+ } else {
+ /* Fast Open Cookie */
+ if (datalen % 2 != 0 || datalen < 4 || datalen > 16) {
+ ND_PRINT((ndo, " malformed"));
+ } else {
+ ND_PRINT((ndo, " cookie "));
+ for (i = 0; i < datalen; ++i)
+ ND_PRINT((ndo, "%02x", cp[i]));
+ }
+ }
+}
+
#ifdef HAVE_LIBCRYPTO
USES_APPLE_DEPRECATED_API
static int
u_char sig[TCP_SIGLEN];
char zero_proto = 0;
MD5_CTX ctx;
- u_int16_t savecsum, tlen;
+ uint16_t savecsum, tlen;
#ifdef INET6
- struct ip6_hdr *ip6;
- u_int32_t len32;
- u_int8_t nxt;
+ const struct ip6_hdr *ip6;
+ uint32_t len32;
+ uint8_t nxt;
#endif
if (data + length > ndo->ndo_snapend) {
tp1 = *tp;
if (ndo->ndo_sigsecret == NULL) {
- ND_PRINT((ndo, "shared secret not supplied with -M, ");
- return (CANT_CHECK_SIGNATURE));
+ ND_PRINT((ndo, "shared secret not supplied with -M, "));
+ return (CANT_CHECK_SIGNATURE);
}
MD5_Init(&ctx);
* Step 1: Update MD5 hash with IP pseudo-header.
*/
if (IP_V(ip) == 4) {
- MD5_Update(&ctx, (char *)&ip->ip_src, sizeof(ip->ip_src));
- MD5_Update(&ctx, (char *)&ip->ip_dst, sizeof(ip->ip_dst));
- MD5_Update(&ctx, (char *)&zero_proto, sizeof(zero_proto));
- MD5_Update(&ctx, (char *)&ip->ip_p, sizeof(ip->ip_p));
+ MD5_Update(&ctx, (const char *)&ip->ip_src, sizeof(ip->ip_src));
+ 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 = htons(tlen);
- MD5_Update(&ctx, (char *)&tlen, sizeof(tlen));
+ MD5_Update(&ctx, (const char *)&tlen, sizeof(tlen));
#ifdef INET6
} else if (IP_V(ip) == 6) {
- ip6 = (struct ip6_hdr *)ip;
- MD5_Update(&ctx, (char *)&ip6->ip6_src, sizeof(ip6->ip6_src));
- MD5_Update(&ctx, (char *)&ip6->ip6_dst, sizeof(ip6->ip6_dst));
+ 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));
- MD5_Update(&ctx, (char *)&len32, sizeof(len32));
+ MD5_Update(&ctx, (const char *)&len32, sizeof(len32));
nxt = 0;
- MD5_Update(&ctx, (char *)&nxt, sizeof(nxt));
- MD5_Update(&ctx, (char *)&nxt, sizeof(nxt));
- MD5_Update(&ctx, (char *)&nxt, sizeof(nxt));
+ MD5_Update(&ctx, (const char *)&nxt, sizeof(nxt));
+ MD5_Update(&ctx, (const char *)&nxt, sizeof(nxt));
+ MD5_Update(&ctx, (const char *)&nxt, sizeof(nxt));
nxt = IPPROTO_TCP;
- MD5_Update(&ctx, (char *)&nxt, sizeof(nxt));
+ MD5_Update(&ctx, (const char *)&nxt, sizeof(nxt));
#endif
} else {
#ifdef INET6
*/
savecsum = tp1.th_sum;
tp1.th_sum = 0;
- MD5_Update(&ctx, (char *)&tp1, sizeof(struct tcphdr));
+ MD5_Update(&ctx, (const char *)&tp1, sizeof(struct tcphdr));
tp1.th_sum = savecsum;
/*
* Step 3: Update MD5 hash with TCP segment data, if present.
projects / tcpdump / blobdiff