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Get rid of an extra newline.
[tcpdump] / print-tcp.c
diff --git a/print-tcp.c b/print-tcp.c
index 089967a9c3f06df19b4de6dec951bcc197930346..cd1299d9947e8a70775b4af4dcbef79fed2484ad 100644 (file)
--- a/print-tcp.c
+++ b/print-tcp.c
@@ -21,7 +21,7 @@
 
 #ifndef lint
 static const char rcsid[] =
 
 #ifndef lint
 static const char rcsid[] =
-    "@(#) $Header: /tcpdump/master/tcpdump/print-tcp.c,v 1.83 2001-01-28 08:09:23 itojun Exp $ (LBL)";
+    "@(#) $Header: /tcpdump/master/tcpdump/print-tcp.c,v 1.95 2001-12-10 08:21:24 guy Exp $ (LBL)";
 #endif
 
 #ifdef HAVE_CONFIG_H
 #endif
 
 #ifdef HAVE_CONFIG_H
@@ -52,49 +52,12 @@ static const char rcsid[] =
 #include "ip6.h"
 #endif
 
 #include "ip6.h"
 #endif
 
+#include "nameser.h"
+
 static void print_tcp_rst_data(register const u_char *sp, u_int length);
 
 #define MAX_RST_DATA_LEN       30
 
 static void print_tcp_rst_data(register const u_char *sp, u_int length);
 
 #define MAX_RST_DATA_LEN       30
 
-/* Compatibility */
-#ifndef TCPOPT_WSCALE
-#define        TCPOPT_WSCALE           3       /* window scale factor (rfc1072) */
-#endif
-#ifndef TCPOPT_SACKOK
-#define        TCPOPT_SACKOK           4       /* selective ack ok (rfc1072) */
-#endif
-#ifndef TCPOPT_SACK
-#define        TCPOPT_SACK             5       /* selective ack (rfc1072) */
-#endif
-#ifndef TCPOPT_ECHO
-#define        TCPOPT_ECHO             6       /* echo (rfc1072) */
-#endif
-#ifndef TCPOPT_ECHOREPLY
-#define        TCPOPT_ECHOREPLY        7       /* echo (rfc1072) */
-#endif
-#ifndef TCPOPT_TIMESTAMP
-#define TCPOPT_TIMESTAMP       8       /* timestamps (rfc1323) */
-#endif
-#ifndef TCPOPT_CC
-#define TCPOPT_CC              11      /* T/TCP CC options (rfc1644) */
-#endif
-#ifndef TCPOPT_CCNEW
-#define TCPOPT_CCNEW           12      /* T/TCP CC options (rfc1644) */
-#endif
-#ifndef TCPOPT_CCECHO
-#define TCPOPT_CCECHO          13      /* T/TCP CC options (rfc1644) */
-#endif
-
-/*
- * Definitions required for ECN
- * for use if the OS running tcpdump does not have ECN
- */
-#ifndef TH_ECNECHO
-#define TH_ECNECHO             0x40    /* ECN Echo in tcp header */
-#endif
-#ifndef TH_CWR
-#define TH_CWR                 0x80    /* ECN Cwnd Reduced in tcp header*/
-#endif
 
 struct tha {
 #ifndef INET6
 
 struct tha {
 #ifndef INET6
@@ -129,16 +92,19 @@ static struct tcp_seq_hash tcp_seq_hash[TSEQ_HASHSIZE];
 #define BGP_PORT       179
 #endif
 #define NETBIOS_SSN_PORT 139
 #define BGP_PORT       179
 #endif
 #define NETBIOS_SSN_PORT 139
-#define BXXP_PORT        10288
+#ifndef PPTP_PORT
+#define PPTP_PORT      1723
+#endif
+#define BEEP_PORT        10288
 #ifndef NFS_PORT
 #define NFS_PORT       2049
 #endif
 #ifndef NFS_PORT
 #define NFS_PORT       2049
 #endif
+#define MSDP_PORT      639
 
 static int tcp_cksum(register const struct ip *ip,
                     register const struct tcphdr *tp,
                     register int len)
 {
 
 static int tcp_cksum(register const struct ip *ip,
                     register const struct tcphdr *tp,
                     register int len)
 {
-       int i, tlen;
        union phu {
                struct phdr {
                        u_int32_t src;
        union phu {
                struct phdr {
                        u_int32_t src;
@@ -149,34 +115,18 @@ static int tcp_cksum(register const struct ip *ip,
                } ph;
                u_int16_t pa[6];
        } phu;
                } ph;
                u_int16_t pa[6];
        } phu;
-       register const u_int16_t *sp;
-       u_int32_t sum;
-       tlen = ntohs(ip->ip_len) - ((const char *)tp-(const char*)ip);
+       const u_int16_t *sp;
 
        /* pseudo-header.. */
 
        /* pseudo-header.. */
-       phu.ph.len = htons(tlen);
+       phu.ph.len = htons(len);        /* XXX */
        phu.ph.mbz = 0;
        phu.ph.proto = IPPROTO_TCP;
        memcpy(&phu.ph.src, &ip->ip_src.s_addr, sizeof(u_int32_t));
        memcpy(&phu.ph.dst, &ip->ip_dst.s_addr, sizeof(u_int32_t));
 
        sp = &phu.pa[0];
        phu.ph.mbz = 0;
        phu.ph.proto = IPPROTO_TCP;
        memcpy(&phu.ph.src, &ip->ip_src.s_addr, sizeof(u_int32_t));
        memcpy(&phu.ph.dst, &ip->ip_dst.s_addr, sizeof(u_int32_t));
 
        sp = &phu.pa[0];
-       sum = sp[0]+sp[1]+sp[2]+sp[3]+sp[4]+sp[5];
-
-       sp = (const u_int16_t *)tp;
-
-       for (i=0; i<(tlen&~1); i+= 2)
-               sum += *sp++;
-
-       if (tlen & 1) {
-               sum += htons( (*(const u_int8_t *)sp) << 8);
-       }
-
-       while (sum > 0xffff)
-               sum = (sum & 0xffff) + (sum >> 16);
-       sum = ~sum & 0xffff;
-
-       return (sum);
+       return in_cksum((u_short *)tp, len,
+                       sp[0]+sp[1]+sp[2]+sp[3]+sp[4]+sp[5]);
 }
 
 #ifdef INET6
 }
 
 #ifdef INET6
@@ -262,7 +212,6 @@ tcp_print(register const u_char *bp, register u_int length,
        sport = ntohs(tp->th_sport);
        dport = ntohs(tp->th_dport);
 
        sport = ntohs(tp->th_sport);
        dport = ntohs(tp->th_dport);
 
-
        hlen = TH_OFF(tp) * 4;
 
        /*
        hlen = TH_OFF(tp) * 4;
 
        /*
@@ -273,13 +222,13 @@ tcp_print(register const u_char *bp, register u_int length,
        if (!qflag) {
                if ((u_char *)tp + 4 + sizeof(struct rpc_msg) <= snapend &&
                    dport == NFS_PORT) {
        if (!qflag) {
                if ((u_char *)tp + 4 + sizeof(struct rpc_msg) <= snapend &&
                    dport == NFS_PORT) {
-                       nfsreq_print((u_char *)tp + hlen + 4, length-hlen,
+                       nfsreq_print((u_char *)tp + hlen + 4, length - hlen,
                                     (u_char *)ip);
                        return;
                } else if ((u_char *)tp + 4 + sizeof(struct rpc_msg)
                           <= snapend &&
                           sport == NFS_PORT) {
                                     (u_char *)ip);
                        return;
                } else if ((u_char *)tp + 4 + sizeof(struct rpc_msg)
                           <= snapend &&
                           sport == NFS_PORT) {
-                       nfsreply_print((u_char *)tp + hlen + 4,length-hlen,
+                       nfsreply_print((u_char *)tp + hlen + 4, length - hlen,
                                       (u_char *)ip);
                        return;
                }
                                       (u_char *)ip);
                        return;
                }
@@ -353,18 +302,18 @@ tcp_print(register const u_char *bp, register u_int length,
                memset(&tha, 0, sizeof(tha));
                rev = 0;
                if (ip6) {
                memset(&tha, 0, sizeof(tha));
                rev = 0;
                if (ip6) {
-                       if (sport > dport) {
+                       if (sport > dport)
                                rev = 1;
                                rev = 1;
-                       } else if (sport == dport) {
-                           int i;
-
-                           for (i = 0; i < 4; i++) {
-                               if (((u_int32_t *)(&ip6->ip6_src))[i] >
-                                   ((u_int32_t *)(&ip6->ip6_dst))[i]) {
-                                       rev = 1;
-                                       break;
+                       else if (sport == dport) {
+                               int i;
+
+                               for (i = 0; i < 4; i++) {
+                                       if (((u_int32_t *)(&ip6->ip6_src))[i] >
+                                           ((u_int32_t *)(&ip6->ip6_dst))[i]) {
+                                               rev = 1;
+                                               break;
+                                       }
                                }
                                }
-                           }
                        }
                        if (rev) {
                                tha.src = ip6->ip6_dst;
                        }
                        if (rev) {
                                tha.src = ip6->ip6_dst;
@@ -468,7 +417,7 @@ tcp_print(register const u_char *bp, register u_int length,
 
        length -= hlen;
        if (vflag > 1 || length > 0 || flags & (TH_SYN | TH_FIN | TH_RST))
 
        length -= hlen;
        if (vflag > 1 || length > 0 || flags & (TH_SYN | TH_FIN | TH_RST))
-               (void)printf(" %u:%u(%d)", seq, seq + length, length);
+               (void)printf(" %u:%u(%u)", seq, seq + length, length);
        if (flags & TH_ACK)
                (void)printf(" ack %u", ack);
 
        if (flags & TH_ACK)
                (void)printf(" ack %u", ack);
 
@@ -648,10 +597,24 @@ tcp_print(register const u_char *bp, register u_int length,
                                telnet_print(bp, length);
                } else if (sport == BGP_PORT || dport == BGP_PORT)
                        bgp_print(bp, length);
                                telnet_print(bp, length);
                } else if (sport == BGP_PORT || dport == BGP_PORT)
                        bgp_print(bp, length);
+               else if (sport == PPTP_PORT || dport == PPTP_PORT)
+                       pptp_print(bp, length);
+#ifdef TCPDUMP_DO_SMB
                else if (sport == NETBIOS_SSN_PORT || dport == NETBIOS_SSN_PORT)
                        nbt_tcp_print(bp, length);
                else if (sport == NETBIOS_SSN_PORT || dport == NETBIOS_SSN_PORT)
                        nbt_tcp_print(bp, length);
-               else if (sport == BXXP_PORT || dport == BXXP_PORT)
-                       bxxp_print(bp, length);
+#endif
+               else if (sport == BEEP_PORT || dport == BEEP_PORT)
+                       beep_print(bp, length);
+               else if (length > 2 &&
+                   (sport == NAMESERVER_PORT || dport == NAMESERVER_PORT)) {
+                       /*
+                        * TCP DNS query has 2byte length at the head.
+                        * XXX packet could be unaligned, it can go strange
+                        */
+                       ns_print(bp + 2, length - 2);
+               } else if (sport == MSDP_PORT || dport == MSDP_PORT) {
+                       msdp_print(bp, length);
+               }
        }
        return;
 bad:
        }
        return;
 bad:
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