1 /*
2 * TCPVIEW
3 *
4 * Author: Martin Hunt
5 * Networks and Distributed Computing
6 * Computing & Communications
7 * University of Washington
8 * Administration Building, AG-44
9 * Seattle, WA 98195
10 * Internet: martinh@cac.washington.edu
11 *
12 *
13 * Copyright 1992 by the University of Washington
14 *
15 * Permission to use, copy, modify, and distribute this software and its
16 * documentation for any purpose and without fee is hereby granted, provided
17 * that the above copyright notice appears in all copies and that both the
18 * above copyright notice and this permission notice appear in supporting
19 * documentation, and that the name of the University of Washington not be
20 * used in advertising or publicity pertaining to distribution of the software
21 * without specific, written prior permission. This software is made
22 * available "as is", and
23 * THE UNIVERSITY OF WASHINGTON DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED,
24 * WITH REGARD TO THIS SOFTWARE, INCLUDING WITHOUT LIMITATION ALL IMPLIED
25 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, AND IN
26 * NO EVENT SHALL THE UNIVERSITY OF WASHINGTON BE LIABLE FOR ANY SPECIAL,
27 * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
28 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, TORT
29 * (INCLUDING NEGLIGENCE) OR STRICT LIABILITY, ARISING OUT OF OR IN CONNECTION
30 * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
31 *
32 */
33
34 #ifndef lint
35 static char rcsid[] =
36 "@(#) $Header: /usr/staff/martinh/tcpview/RCS/detail-udp.c,v 1.4 1993/04/22 20:17:56 martinh Exp $ (UW)";
37 #endif
38
39 #include <sys/types.h>
40 #include <sys/param.h>
41 #include <sys/socket.h>
42 #include <netinet/in.h>
43 #include <netinet/in_systm.h>
44 #include <netinet/ip.h>
45 #include <netinet/ip_var.h>
46 #include <netinet/udp.h>
47 #include <netinet/udp_var.h>
48
49 #include <arpa/nameser.h>
50 #include <arpa/tftp.h>
51 #include <errno.h>
52 #include <sys/time.h>
53 #include <rpc/types.h>
54 #include <rpc/xdr.h>
55 #include <rpc/auth.h>
56 #include <rpc/auth_unix.h>
57 #include <rpc/svc.h>
58 #include <rpc/rpc_msg.h>
59 #include <sys/ucred.h>
60 #include <sys/mount.h>
61 #if defined(__FreeBSD_version) && __FreeBSD_version >= 800100
62 #include <vfs/nfs/nfsport.h>
63 #include <vfs/nfs/rpcv2.h>
64 #include <vfs/nfs/nfsproto.h>
65 #else
66 #include <vfs/nfs/rpcv2.h>
67 #include <vfs/nfs/nfsproto.h>
68 #endif
69
70 #include "interface.h"
71 #include "addrtoname.h"
72 #include "appletalk.h"
73
74 #include "bootp.h"
75
76 #include "tcpview.h"
77
78 extern u_short D_Src_Port, D_Dst_Port;
79 extern u_short TFTP_PORT, SNMP_PORT, NTP_PORT, SNMPTRAP_PORT, RIP_PORT, SUNRPC_PORT;
80
detail_udp(up,length)81 void detail_udp( up, length )
82 register struct udphdr *up;
83 u_short length;
84 {
85 register u_char *cp = (u_char *)(up + 1);
86 u_short sport, dport, len;
87 register struct rpc_msg *rp;
88 enum msg_type direction;
89
90
91 if (Phdr->caplen-Offset < sizeof(struct udphdr)) {
92 printf("*** UDP (truncated) ***\n");
93 hex(0, Phdr->caplen - Offset - 1);
94 return;
95 }
96
97 D_Src_Port = sport = ntohs(up->uh_sport);
98 D_Dst_Port = dport = ntohs(up->uh_dport);
99 len = ntohs(up->uh_ulen);
100
101 printf("----- UDP Header -----\n\n");
102 hex( 0, sizeof(struct udphdr) - 1); /* header */
103
104 printf("Source port = %d ( %s )\n",sport,udpport_string(sport));
105 printf("Destination port = %d ( %s )\n",dport,udpport_string(dport));
106 if(len == length)
107 printf("Length = %d\n",len);
108 else
109 printf("Length = %d Should be %d according to IP!\n",len,length);
110 printf("Checksum = %x\n\n",ntohs(up->uh_sum));
111 hex( -1, -1 ); /* blank line */
112 hex( 0, 1 ); /* source port */
113 hex( 2, 3 ); /* dest port */
114 hex( 4, 5 ); /* length */
115 hex( 6, 7 ); /* checksum */
116 hex( -1, -1 ); /* blank line */
117
118 length -= sizeof(struct udphdr);
119 Offset += sizeof(struct udphdr);
120
121 /*
122 rp = (struct rpc_msg *)(up + 1);
123 direction = (enum msg_type)ntohl(rp->rm_direction);
124 if (up->uh_dport == NFS_PORT && direction == CALL) {
125 nfsreq_print(rp, length, ip);
126 return;
127 }
128 else if (up->uh_sport == NFS_PORT && direction==REPLY) {
129 nfsreply_print(rp, length, ip);
130 return;
131 }
132 else if (cp[2] == 2 && (atalk_port(up->uh_sport) ||
133 atalk_port(up->uh_dport))) {
134 ddp_print((struct atDDP *)(&cp[3]), length - 3);
135 return;
136 }
137 */
138
139 #define ISPORT(p) (dport == (p) || sport == (p))
140
141 /*
142 if (ISPORT(NAMESERVER_PORT))
143 ns_print((HEADER *)(up + 1), length);
144 else if (ISPORT(TFTP_PORT))
145 tftp_print((struct tftphdr *)(up + 1), length);
146 else if (ISPORT(IPPORT_BOOTPC) || ISPORT(IPPORT_BOOTPS))
147 bootp_print((struct bootp *)(up + 1), length,
148 up->uh_sport, up->uh_dport);
149 else
150 */
151 if ( ISPORT(RIP_PORT) )
152 detail_rip((u_char *)(up + 1), length);
153 else if ( ISPORT(NAMESERVER_PORT) )
154 detail_domain((u_char *)(up + 1), length);
155 else if (ISPORT(SNMP_PORT) || ISPORT(SNMPTRAP_PORT))
156 detail_snmp((u_char *)(up + 1), length);
157 /*
158 else if (ISPORT(NTP_PORT))
159 ntp_print((struct ntpdata *)(up + 1), length);
160 else
161 (void)printf(" udp %d", up->uh_ulen - sizeof(*up));
162 */
163 #undef ISPORT
164 }
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