X-Git-Url: https://git.tcpdump.org/tcpdump/blobdiff_plain/c422d3ab0f6de2d38512a4566637bc47df291e74..2683dab26609b3574f3477cae2bcc9d1206213d0:/print-udp.c

diff --git a/print-udp.c b/print-udp.c
index b1f46609..69ef39d5 100644
--- a/print-udp.c
+++ b/print-udp.c
@@ -20,8 +20,8 @@
  */
 
 #ifndef lint
-static const char rcsid[] =
-    "@(#) $Header: /tcpdump/master/tcpdump/print-udp.c,v 1.109 2002-09-05 21:25:50 guy Exp $ (LBL)";
+static const char rcsid[] _U_ =
+    "@(#) $Header: /tcpdump/master/tcpdump/print-udp.c,v 1.126 2003-11-16 09:36:41 guy Exp $ (LBL)";
 #endif
 
 #ifdef HAVE_CONFIG_H
@@ -42,6 +42,7 @@ static const char rcsid[] =
 
 #include "interface.h"
 #include "addrtoname.h"
+#include "extract.h"
 #include "appletalk.h"
 
 #include "udp.h"
@@ -50,6 +51,7 @@ static const char rcsid[] =
 #ifdef INET6
 #include "ip6.h"
 #endif
+#include "ipproto.h"
 
 #include "nameser.h"
 #include "nfs.h"
@@ -112,14 +114,14 @@ vat_print(const void *hdr, register const struct udphdr *up)
 	if ((ts & 0xf060) != 0) {
 		/* probably vt */
 		(void)printf("udp/vt %u %d / %d",
-			     (u_int32_t)(ntohs(up->uh_ulen) - sizeof(*up)),
+			     (u_int32_t)(EXTRACT_16BITS(&up->uh_ulen) - sizeof(*up)),
 			     ts & 0x3ff, ts >> 10);
 	} else {
 		/* probably vat */
-		u_int32_t i0 = (u_int32_t)ntohl(((u_int *)hdr)[0]);
-		u_int32_t i1 = (u_int32_t)ntohl(((u_int *)hdr)[1]);
+		u_int32_t i0 = EXTRACT_32BITS(&((u_int *)hdr)[0]);
+		u_int32_t i1 = EXTRACT_32BITS(&((u_int *)hdr)[1]);
 		printf("udp/vat %u c%d %u%s",
-			(u_int32_t)(ntohs(up->uh_ulen) - sizeof(*up) - 8),
+			(u_int32_t)(EXTRACT_16BITS(&up->uh_ulen) - sizeof(*up) - 8),
 			i0 & 0xffff,
 			i1, i0 & 0x800000? "*" : "");
 		/* audio format */
@@ -136,9 +138,9 @@ rtp_print(const void *hdr, u_int len, register const struct udphdr *up)
 	/* rtp v1 or v2 */
 	u_int *ip = (u_int *)hdr;
 	u_int hasopt, hasext, contype, hasmarker;
-	u_int32_t i0 = (u_int32_t)ntohl(((u_int *)hdr)[0]);
-	u_int32_t i1 = (u_int32_t)ntohl(((u_int *)hdr)[1]);
-	u_int dlen = ntohs(up->uh_ulen) - sizeof(*up) - 8;
+	u_int32_t i0 = EXTRACT_32BITS(&((u_int *)hdr)[0]);
+	u_int32_t i1 = EXTRACT_32BITS(&((u_int *)hdr)[1]);
+	u_int dlen = EXTRACT_16BITS(&up->uh_ulen) - sizeof(*up) - 8;
 	const char * ptype;
 
 	ip += 2;
@@ -171,7 +173,7 @@ rtp_print(const void *hdr, u_int len, register const struct udphdr *up)
 		i0 & 0xffff,
 		i1);
 	if (vflag) {
-		printf(" %u", (u_int32_t)ntohl(((u_int *)hdr)[2]));
+		printf(" %u", EXTRACT_32BITS(&((u_int *)hdr)[2]));
 		if (hasopt) {
 			u_int i2, optlen;
 			do {
@@ -215,8 +217,8 @@ rtcp_print(const u_char *hdr, const u_char *ep)
 		printf(" [|rtcp]");
 		return (ep);
 	}
-	len = (ntohs(rh->rh_len) + 1) * 4;
-	flags = ntohs(rh->rh_flags);
+	len = (EXTRACT_16BITS(&rh->rh_len) + 1) * 4;
+	flags = EXTRACT_16BITS(&rh->rh_flags);
 	cnt = (flags >> 8) & 0x1f;
 	switch (flags & 0xff) {
 	case RTCP_PT_SR:
@@ -225,16 +227,16 @@ rtcp_print(const u_char *hdr, const u_char *ep)
 		if (len != cnt * sizeof(*rr) + sizeof(*sr) + sizeof(*rh))
 			printf(" [%d]", len);
 		if (vflag)
-			printf(" %u", (u_int32_t)ntohl(rh->rh_ssrc));
+			printf(" %u", EXTRACT_32BITS(&rh->rh_ssrc));
 		if ((u_char *)(sr + 1) > ep) {
 			printf(" [|rtcp]");
 			return (ep);
 		}
-		ts = (double)((u_int32_t)ntohl(sr->sr_ntp.upper)) +
-		    ((double)((u_int32_t)ntohl(sr->sr_ntp.lower)) /
+		ts = (double)(EXTRACT_32BITS(&sr->sr_ntp.upper)) +
+		    ((double)(EXTRACT_32BITS(&sr->sr_ntp.lower)) /
 		    4294967296.0);
-		printf(" @%.2f %u %up %ub", ts, (u_int32_t)ntohl(sr->sr_ts),
-		    (u_int32_t)ntohl(sr->sr_np), (u_int32_t)ntohl(sr->sr_nb));
+		printf(" @%.2f %u %up %ub", ts, EXTRACT_32BITS(&sr->sr_ts),
+		    EXTRACT_32BITS(&sr->sr_np), EXTRACT_32BITS(&sr->sr_nb));
 		rr = (struct rtcp_rr *)(sr + 1);
 		break;
 	case RTCP_PT_RR:
@@ -243,18 +245,18 @@ rtcp_print(const u_char *hdr, const u_char *ep)
 			printf(" [%d]", len);
 		rr = (struct rtcp_rr *)(rh + 1);
 		if (vflag)
-			printf(" %u", (u_int32_t)ntohl(rh->rh_ssrc));
+			printf(" %u", EXTRACT_32BITS(&rh->rh_ssrc));
 		break;
 	case RTCP_PT_SDES:
 		printf(" sdes %d", len);
 		if (vflag)
-			printf(" %u", (u_int32_t)ntohl(rh->rh_ssrc));
+			printf(" %u", EXTRACT_32BITS(&rh->rh_ssrc));
 		cnt = 0;
 		break;
 	case RTCP_PT_BYE:
 		printf(" bye %d", len);
 		if (vflag)
-			printf(" %u", (u_int32_t)ntohl(rh->rh_ssrc));
+			printf(" %u", EXTRACT_32BITS(&rh->rh_ssrc));
 		cnt = 0;
 		break;
 	default:
@@ -270,13 +272,13 @@ rtcp_print(const u_char *hdr, const u_char *ep)
 			return (ep);
 		}
 		if (vflag)
-			printf(" %u", (u_int32_t)ntohl(rr->rr_srcid));
-		ts = (double)((u_int32_t)ntohl(rr->rr_lsr)) / 65536.;
-		dts = (double)((u_int32_t)ntohl(rr->rr_dlsr)) / 65536.;
+			printf(" %u", EXTRACT_32BITS(&rr->rr_srcid));
+		ts = (double)(EXTRACT_32BITS(&rr->rr_lsr)) / 65536.;
+		dts = (double)(EXTRACT_32BITS(&rr->rr_dlsr)) / 65536.;
 		printf(" %ul %us %uj @%.2f+%.2f",
-		    (u_int32_t)ntohl(rr->rr_nl) & 0x00ffffff,
-		    (u_int32_t)ntohl(rr->rr_ls),
-		    (u_int32_t)ntohl(rr->rr_dv), ts, dts);
+		    EXTRACT_32BITS(&rr->rr_nl) & 0x00ffffff,
+		    EXTRACT_32BITS(&rr->rr_ls),
+		    EXTRACT_32BITS(&rr->rr_dv), ts, dts);
 	}
 	return (hdr + len);
 }
@@ -330,7 +332,7 @@ static int udp6_cksum(const struct ip6_hdr *ip6, const struct udphdr *up,
 		u_int16_t pa[20];
 	} phu;
 
-	tlen = ntohs(ip6->ip6_plen) + sizeof(struct ip6_hdr) -
+	tlen = EXTRACT_16BITS(&ip6->ip6_plen) + sizeof(struct ip6_hdr) -
 	    ((const char *)up - (const char*)ip6);
 
 	/* pseudo-header */
@@ -360,44 +362,8 @@ static int udp6_cksum(const struct ip6_hdr *ip6, const struct udphdr *up,
 }
 #endif
 
-
-/* XXX probably should use getservbyname() and cache answers */
-#define TFTP_PORT 69		/*XXX*/
-#define KERBEROS_PORT 88	/*XXX*/
-#define SUNRPC_PORT 111		/*XXX*/
-#define SNMP_PORT 161		/*XXX*/
-#define NTP_PORT 123		/*XXX*/
-#define SNMPTRAP_PORT 162	/*XXX*/
-#define ISAKMP_PORT 500		/*XXX*/
-#define TIMED_PORT 525		/*XXX*/
-#define RIP_PORT 520		/*XXX*/
-#define LDP_PORT 646
-#define KERBEROS_SEC_PORT 750	/*XXX*/
-#define L2TP_PORT 1701		/*XXX*/
-#define ISAKMP_PORT_USER1 7500	/*XXX - nonstandard*/
-#define ISAKMP_PORT_USER2 8500	/*XXX - nonstandard*/
-#define RX_PORT_LOW 7000	/*XXX*/
-#define RX_PORT_HIGH 7009	/*XXX*/
-#define NETBIOS_NS_PORT   137
-#define NETBIOS_DGRAM_PORT   138
-#define CISCO_AUTORP_PORT 496	/*XXX*/
-#define RADIUS_PORT 1645
-#define RADIUS_NEW_PORT 1812
-#define RADIUS_ACCOUNTING_PORT 1646
-#define RADIUS_NEW_ACCOUNTING_PORT 1813
-#define HSRP_PORT 1985		/*XXX*/
-#define LWRES_PORT		921
-#define ZEPHYR_SRV_PORT		2103
-#define ZEPHYR_CLT_PORT		2104
-
-#ifdef INET6
-#define RIPNG_PORT 521		/*XXX*/
-#define DHCP6_SERV_PORT 546	/*XXX*/
-#define DHCP6_CLI_PORT 547	/*XXX*/
-#endif
-
 static void
-udpipaddr_print(const struct ip *ip, u_int16_t sport, u_int16_t dport)
+udpipaddr_print(const struct ip *ip, int sport, int dport)
 {
 #ifdef INET6
 	const struct ip6_hdr *ip6;
@@ -409,27 +375,45 @@ udpipaddr_print(const struct ip *ip, u_int16_t sport, u_int16_t dport)
 
 	if (ip6) {
 		if (ip6->ip6_nxt == IPPROTO_UDP) {
-			(void)printf("%s.%s > %s.%s: ",
-				ip6addr_string(&ip6->ip6_src),
-				udpport_string(sport),
-				ip6addr_string(&ip6->ip6_dst),
-				udpport_string(dport));
+			if (sport == -1) {
+				(void)printf("%s > %s: ",
+					ip6addr_string(&ip6->ip6_src),
+					ip6addr_string(&ip6->ip6_dst));
+			} else {
+				(void)printf("%s.%s > %s.%s: ",
+					ip6addr_string(&ip6->ip6_src),
+					udpport_string(sport),
+					ip6addr_string(&ip6->ip6_dst),
+					udpport_string(dport));
+			}
 		} else {
-			(void)printf("%s > %s: ",
-				udpport_string(sport), udpport_string(dport));
+			if (sport != -1) {
+				(void)printf("%s > %s: ",
+					udpport_string(sport),
+					udpport_string(dport));
+			}
 		}
 	} else
 #endif /*INET6*/
 	{
 		if (ip->ip_p == IPPROTO_UDP) {
-			(void)printf("%s.%s > %s.%s: ",
-				ipaddr_string(&ip->ip_src),
-				udpport_string(sport),
-				ipaddr_string(&ip->ip_dst),
-				udpport_string(dport));
+			if (sport == -1) {
+				(void)printf("%s > %s: ",
+					ipaddr_string(&ip->ip_src),
+					ipaddr_string(&ip->ip_dst));
+			} else {
+				(void)printf("%s.%s > %s.%s: ",
+					ipaddr_string(&ip->ip_src),
+					udpport_string(sport),
+					ipaddr_string(&ip->ip_dst),
+					udpport_string(dport));
+			}
 		} else {
-			(void)printf("%s > %s: ",
-				udpport_string(sport), udpport_string(dport));
+			if (sport != -1) {
+				(void)printf("%s > %s: ",
+					udpport_string(sport),
+					udpport_string(dport));
+			}
 		}
 	}
 }
@@ -458,27 +442,32 @@ udp_print(register const u_char *bp, u_int length,
 		ip6 = NULL;
 #endif /*INET6*/
 	cp = (u_char *)(up + 1);
-	if (cp > snapend) {
-		(void)printf("%s > %s: [|udp]",
-			ipaddr_string(&ip->ip_src), ipaddr_string(&ip->ip_dst));
+	if (!TTEST(up->uh_dport)) {
+		udpipaddr_print(ip, -1, -1);
+		(void)printf("[|udp]");
 		return;
 	}
+
+	sport = EXTRACT_16BITS(&up->uh_sport);
+	dport = EXTRACT_16BITS(&up->uh_dport);
+
 	if (length < sizeof(struct udphdr)) {
-		(void)printf("%s > %s: truncated-udp %d",
-			ipaddr_string(&ip->ip_src), ipaddr_string(&ip->ip_dst),
-			length);
+		udpipaddr_print(ip, sport, dport);
+		(void)printf("truncated-udp %d", length);
 		return;
 	}
 	length -= sizeof(struct udphdr);
 
-	sport = ntohs(up->uh_sport);
-	dport = ntohs(up->uh_dport);
-	ulen = ntohs(up->uh_ulen);
+	if (cp > snapend) {
+		udpipaddr_print(ip, sport, dport);
+		(void)printf("[|udp]");
+		return;
+	}
+
+	ulen = EXTRACT_16BITS(&up->uh_ulen);
 	if (ulen < 8) {
-		(void)printf("%s > %s: truncated-udplength %d",
-			     ipaddr_string(&ip->ip_src),
-			     ipaddr_string(&ip->ip_dst),
-			     ulen);
+		udpipaddr_print(ip, sport, dport);
+		(void)printf("truncated-udplength %d", ulen);
 		return;
 	}
 	if (packettype) {
@@ -499,7 +488,7 @@ udp_print(register const u_char *bp, u_int length,
 
 		case PT_RPC:
 			rp = (struct rpc_msg *)(up + 1);
-			direction = (enum msg_type)ntohl(rp->rm_direction);
+			direction = (enum msg_type)EXTRACT_32BITS(&rp->rm_direction);
 			if (direction == CALL)
 				sunrpcrequest_print((u_char *)rp, length,
 				    (u_char *)ip);
@@ -528,6 +517,21 @@ udp_print(register const u_char *bp, u_int length,
 			udpipaddr_print(ip, sport, dport);
 			cnfp_print(cp, (const u_char *)ip);
 			break;
+
+		case PT_TFTP:
+			udpipaddr_print(ip, sport, dport);
+			tftp_print(cp, length);
+			break;
+
+		case PT_AODV:
+			udpipaddr_print(ip, sport, dport);
+			aodv_print((const u_char *)(up + 1), length,
+#ifdef INET6
+			    ip6 != NULL);
+#else
+			    FALSE);
+#endif
+			break;
 		}
 		return;
 	}
@@ -538,7 +542,7 @@ udp_print(register const u_char *bp, u_int length,
 
 		rp = (struct rpc_msg *)(up + 1);
 		if (TTEST(rp->rm_direction)) {
-			direction = (enum msg_type)ntohl(rp->rm_direction);
+			direction = (enum msg_type)EXTRACT_32BITS(&rp->rm_direction);
 			if (dport == NFS_PORT && direction == CALL) {
 				nfsreq_print((u_char *)rp, length,
 				    (u_char *)ip);
@@ -595,16 +599,25 @@ udp_print(register const u_char *bp, u_int length,
 
 	if (!qflag) {
 #define ISPORT(p) (dport == (p) || sport == (p))
-		if (ISPORT(NAMESERVER_PORT) || ISPORT(MULTICASTDNS_PORT))
-			ns_print((const u_char *)(up + 1), length);
+		if (ISPORT(NAMESERVER_PORT))
+			ns_print((const u_char *)(up + 1), length, 0);
+		else if (ISPORT(MULTICASTDNS_PORT))
+			ns_print((const u_char *)(up + 1), length, 1);
 		else if (ISPORT(TIMED_PORT))
 			timed_print((const u_char *)(up + 1));
 		else if (ISPORT(TFTP_PORT))
 			tftp_print((const u_char *)(up + 1), length);
 		else if (ISPORT(IPPORT_BOOTPC) || ISPORT(IPPORT_BOOTPS))
-			bootp_print((const u_char *)(up + 1), sport, dport);
+			bootp_print((const u_char *)(up + 1), length);
 		else if (ISPORT(RIP_PORT))
 			rip_print((const u_char *)(up + 1), length);
+		else if (ISPORT(AODV_PORT))
+			aodv_print((const u_char *)(up + 1), length,
+#ifdef INET6
+			    ip6 != NULL);
+#else
+			    FALSE);
+#endif
 		else if (ISPORT(ISAKMP_PORT))
 			isakmp_print((const u_char *)(up + 1), length, bp2);
 #if 1 /*???*/
@@ -662,17 +675,16 @@ udp_print(register const u_char *bp, u_int length,
 		else if (ISPORT(LWRES_PORT))
 			lwres_print((const u_char *)(up + 1), length);
                 else if (ISPORT(LDP_PORT))
-                        printf("LDP, length: %u", length);
+			ldp_print((const u_char *)(up + 1), length);
+                else if (ISPORT(MPLS_LSP_PING_PORT))
+			mpls_lsp_ping_print((const u_char *)(up + 1), length);
+		else if (dport == BFD_CONTROL_PORT ||
+			 dport == BFD_ECHO_PORT )
+			bfd_print((const u_char *)(up+1), length, dport);
 		else
-			(void)printf("udp %u",
+			(void)printf("UDP, length: %u",
 			    (u_int32_t)(ulen - sizeof(*up)));
 #undef ISPORT
 	} else
-		(void)printf("udp %u", (u_int32_t)(ulen - sizeof(*up)));
+		(void)printf("UDP, length: %u", (u_int32_t)(ulen - sizeof(*up)));
 }
-
-
-
-
-
-