1 /* 2 * Copyright (c) 1988-1990 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that: (1) source code distributions 7 * retain the above copyright notice and this paragraph in its entirety, (2) 8 * distributions including binary code include the above copyright notice and 9 * this paragraph in its entirety in the documentation or other materials 10 * provided with the distribution, and (3) all advertising materials mentioning 11 * features or use of this software display the following acknowledgement: 12 * ``This product includes software developed by the University of California, 13 * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of 14 * the University nor the names of its contributors may be used to endorse 15 * or promote products derived from this software without specific prior 16 * written permission. 17 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED 18 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF 19 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. 20 */ 21 22 #ifndef lint 23 static char rcsid[] = 24 "@(#) $Header: print-udp.c,v 1.24 91/05/06 00:53:46 mccanne Exp $ (LBL)"; 25 #endif 26 27 #include <sys/param.h> 28 #include <sys/types.h> 29 #include <sys/socket.h> 30 #include <netinet/in.h> 31 #include <netinet/in_systm.h> 32 #include <netinet/ip.h> 33 #include <netinet/ip_var.h> 34 #include <netinet/udp.h> 35 #include <netinet/udp_var.h> 36 37 #include <arpa/nameser.h> 38 #include <arpa/tftp.h> 39 #include <errno.h> 40 #include <sys/time.h> 41 #include <rpc/types.h> 42 #include <rpc/auth.h> 43 #include <rpc/auth_unix.h> 44 #include <rpc/svc.h> 45 #include <rpc/xdr.h> 46 #include <rpc/rpc_msg.h> 47 48 #include "interface.h" 49 /* These must come after interface.h for BSD. */ 50 /*#if BSD >= 199006*/ 51 #include <nfs/nfsv2.h> 52 /*#endif*/ 53 #include <nfs/nfs.h> 54 55 #include "addrtoname.h" 56 #include "appletalk.h" 57 58 #include "bootp.h" 59 60 /* XXX probably should use getservbyname() and cache answers */ 61 #define TFTP_PORT 69 /*XXX*/ 62 #define SNMP_PORT 161 /*XXX*/ 63 #define NTP_PORT 123 /*XXX*/ 64 #define SNMPTRAP_PORT 162 /*XXX*/ 65 #define RIP_PORT 520 /*XXX*/ 66 67 void 68 udp_print(up, length, ip) 69 register struct udphdr *up; 70 int length; 71 register struct ip *ip; 72 { 73 register u_char *cp = (u_char *)(up + 1); 74 75 if (cp > snapend) { 76 printf("[|udp]"); 77 return; 78 } 79 if (length < sizeof(struct udphdr)) { 80 (void)printf(" truncated-udp %d", length); 81 return; 82 } 83 length -= sizeof(struct udphdr); 84 85 NTOHS(up->uh_sport); 86 NTOHS(up->uh_dport); 87 NTOHS(up->uh_ulen); 88 89 if (! qflag) { 90 register struct rpc_msg *rp; 91 enum msg_type direction; 92 93 rp = (struct rpc_msg *)(up + 1); 94 direction = (enum msg_type)ntohl(rp->rm_direction); 95 if (up->uh_dport == NFS_PORT && direction == CALL) { 96 nfsreq_print(rp, length, ip); 97 return; 98 } 99 else if (up->uh_sport == NFS_PORT && direction==REPLY) { 100 nfsreply_print(rp, length, ip); 101 return; 102 } 103 else if (cp[2] == 2 && (atalk_port(up->uh_sport) || 104 atalk_port(up->uh_dport))) { 105 ddp_print((struct atDDP *)(&cp[3]), length - 3); 106 return; 107 } 108 } 109 (void)printf("%s.%s > %s.%s:", 110 ipaddr_string(&ip->ip_src), udpport_string(up->uh_sport), 111 ipaddr_string(&ip->ip_dst), udpport_string(up->uh_dport)); 112 113 if (!qflag) { 114 #define ISPORT(p) (up->uh_dport == (p) || up->uh_sport == (p)) 115 if (ISPORT(NAMESERVER_PORT)) 116 ns_print((HEADER *)(up + 1), length); 117 else if (ISPORT(TFTP_PORT)) 118 tftp_print((struct tftphdr *)(up + 1), length); 119 else if (ISPORT(IPPORT_BOOTPC) || ISPORT(IPPORT_BOOTPS)) 120 bootp_print((struct bootp *)(up + 1), length, 121 up->uh_sport, up->uh_dport); 122 else if (up->uh_dport == RIP_PORT) 123 rip_print((u_char *)(up + 1), length); 124 else if (ISPORT(SNMP_PORT) || ISPORT(SNMPTRAP_PORT)) 125 snmp_print((u_char *)(up + 1), length); 126 else if (ISPORT(NTP_PORT)) 127 ntp_print((struct ntpdata *)(up + 1), length); 128 else 129 (void)printf(" udp %d", up->uh_ulen - sizeof(*up)); 130 #undef ISPORT 131 } else 132 (void)printf(" udp %d", up->uh_ulen - sizeof(*up)); 133 } 134