X-Git-Url: https://git.tcpdump.org/tcpdump/blobdiff_plain/0d28726d0a74b097d0c23b5ad3fc64b38849441a..69cb46af9119e8b5554bcc4bf1bf36f39cb82131:/print-udp.c

diff --git a/print-udp.c b/print-udp.c
index d0596039..dc161abf 100644
--- a/print-udp.c
+++ b/print-udp.c
@@ -19,7 +19,6 @@
  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  */
 
-#define NETDISSECT_REWORKED
 #ifdef HAVE_CONFIG_H
 #include "config.h"
 #endif
@@ -43,17 +42,16 @@
 
 #include "nameser.h"
 #include "nfs.h"
-#include "bootp.h"
 
 struct rtcphdr {
-	u_int16_t rh_flags;	/* T:2 P:1 CNT:5 PT:8 */
-	u_int16_t rh_len;	/* length of message (in words) */
-	u_int32_t rh_ssrc;	/* synchronization src id */
+	uint16_t rh_flags;	/* T:2 P:1 CNT:5 PT:8 */
+	uint16_t rh_len;	/* length of message (in words) */
+	uint32_t rh_ssrc;	/* synchronization src id */
 };
 
 typedef struct {
-	u_int32_t upper;	/* more significant 32 bits */
-	u_int32_t lower;	/* less significant 32 bits */
+	uint32_t upper;	/* more significant 32 bits */
+	uint32_t lower;	/* less significant 32 bits */
 } ntp64;
 
 /*
@@ -61,9 +59,9 @@ typedef struct {
  */
 struct rtcp_sr {
 	ntp64 sr_ntp;		/* 64-bit ntp timestamp */
-	u_int32_t sr_ts;	/* reference media timestamp */
-	u_int32_t sr_np;	/* no. packets sent */
-	u_int32_t sr_nb;	/* no. bytes sent */
+	uint32_t sr_ts;	/* reference media timestamp */
+	uint32_t sr_np;	/* no. packets sent */
+	uint32_t sr_nb;	/* no. bytes sent */
 };
 
 /*
@@ -71,12 +69,12 @@ struct rtcp_sr {
  * Time stamps are middle 32-bits of ntp timestamp.
  */
 struct rtcp_rr {
-	u_int32_t rr_srcid;	/* sender being reported */
-	u_int32_t rr_nl;	/* no. packets lost */
-	u_int32_t rr_ls;	/* extended last seq number received */
-	u_int32_t rr_dv;	/* jitter (delay variance) */
-	u_int32_t rr_lsr;	/* orig. ts from last rr from this src  */
-	u_int32_t rr_dlsr;	/* time from recpt of last rr to xmit time */
+	uint32_t rr_srcid;	/* sender being reported */
+	uint32_t rr_nl;	/* no. packets lost */
+	uint32_t rr_ls;	/* extended last seq number received */
+	uint32_t rr_dv;	/* jitter (delay variance) */
+	uint32_t rr_lsr;	/* orig. ts from last rr from this src  */
+	uint32_t rr_dlsr;	/* time from recpt of last rr to xmit time */
 };
 
 /*XXX*/
@@ -98,18 +96,18 @@ static void
 vat_print(netdissect_options *ndo, const void *hdr, register const struct udphdr *up)
 {
 	/* vat/vt audio */
-	u_int ts = *(u_int16_t *)hdr;
+	u_int ts = EXTRACT_16BITS(hdr);
 	if ((ts & 0xf060) != 0) {
 		/* probably vt */
 		ND_PRINT((ndo, "udp/vt %u %d / %d",
-			     (u_int32_t)(EXTRACT_16BITS(&up->uh_ulen) - sizeof(*up)),
+			     (uint32_t)(EXTRACT_16BITS(&up->uh_ulen) - sizeof(*up)),
 			     ts & 0x3ff, ts >> 10));
 	} else {
 		/* probably vat */
-		u_int32_t i0 = EXTRACT_32BITS(&((u_int *)hdr)[0]);
-		u_int32_t i1 = EXTRACT_32BITS(&((u_int *)hdr)[1]);
+		uint32_t i0 = EXTRACT_32BITS(&((const u_int *)hdr)[0]);
+		uint32_t i1 = EXTRACT_32BITS(&((const u_int *)hdr)[1]);
 		ND_PRINT((ndo, "udp/vat %u c%d %u%s",
-			(u_int32_t)(EXTRACT_16BITS(&up->uh_ulen) - sizeof(*up) - 8),
+			(uint32_t)(EXTRACT_16BITS(&up->uh_ulen) - sizeof(*up) - 8),
 			i0 & 0xffff,
 			i1, i0 & 0x800000? "*" : ""));
 		/* audio format */
@@ -125,10 +123,10 @@ rtp_print(netdissect_options *ndo, const void *hdr, u_int len,
           register const struct udphdr *up)
 {
 	/* rtp v1 or v2 */
-	u_int *ip = (u_int *)hdr;
+	const u_int *ip = (const u_int *)hdr;
 	u_int hasopt, hasext, contype, hasmarker;
-	u_int32_t i0 = EXTRACT_32BITS(&((u_int *)hdr)[0]);
-	u_int32_t i1 = EXTRACT_32BITS(&((u_int *)hdr)[1]);
+	uint32_t i0 = EXTRACT_32BITS(&((const u_int *)hdr)[0]);
+	uint32_t i1 = EXTRACT_32BITS(&((const u_int *)hdr)[1]);
 	u_int dlen = EXTRACT_16BITS(&up->uh_ulen) - sizeof(*up) - 8;
 	const char * ptype;
 
@@ -162,7 +160,7 @@ rtp_print(netdissect_options *ndo, const void *hdr, u_int len,
 		i0 & 0xffff,
 		i1));
 	if (ndo->ndo_vflag) {
-		ND_PRINT((ndo, " %u", EXTRACT_32BITS(&((u_int *)hdr)[2])));
+		ND_PRINT((ndo, " %u", EXTRACT_32BITS(&((const u_int *)hdr)[2])));
 		if (hasopt) {
 			u_int i2, optlen;
 			do {
@@ -195,14 +193,14 @@ static const u_char *
 rtcp_print(netdissect_options *ndo, const u_char *hdr, const u_char *ep)
 {
 	/* rtp v2 control (rtcp) */
-	struct rtcp_rr *rr = 0;
-	struct rtcp_sr *sr;
-	struct rtcphdr *rh = (struct rtcphdr *)hdr;
+	const struct rtcp_rr *rr = 0;
+	const struct rtcp_sr *sr;
+	const struct rtcphdr *rh = (const struct rtcphdr *)hdr;
 	u_int len;
-	u_int16_t flags;
+	uint16_t flags;
 	int cnt;
 	double ts, dts;
-	if ((u_char *)(rh + 1) > ep) {
+	if ((const u_char *)(rh + 1) > ep) {
 		ND_PRINT((ndo, " [|rtcp]"));
 		return (ep);
 	}
@@ -211,13 +209,13 @@ rtcp_print(netdissect_options *ndo, const u_char *hdr, const u_char *ep)
 	cnt = (flags >> 8) & 0x1f;
 	switch (flags & 0xff) {
 	case RTCP_PT_SR:
-		sr = (struct rtcp_sr *)(rh + 1);
+		sr = (const struct rtcp_sr *)(rh + 1);
 		ND_PRINT((ndo, " sr"));
 		if (len != cnt * sizeof(*rr) + sizeof(*sr) + sizeof(*rh))
 			ND_PRINT((ndo, " [%d]", len));
 		if (ndo->ndo_vflag)
 			ND_PRINT((ndo, " %u", EXTRACT_32BITS(&rh->rh_ssrc)));
-		if ((u_char *)(sr + 1) > ep) {
+		if ((const u_char *)(sr + 1) > ep) {
 			ND_PRINT((ndo, " [|rtcp]"));
 			return (ep);
 		}
@@ -226,13 +224,13 @@ rtcp_print(netdissect_options *ndo, const u_char *hdr, const u_char *ep)
 		    4294967296.0);
 		ND_PRINT((ndo, " @%.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);
+		rr = (const struct rtcp_rr *)(sr + 1);
 		break;
 	case RTCP_PT_RR:
 		ND_PRINT((ndo, " rr"));
 		if (len != cnt * sizeof(*rr) + sizeof(*rh))
 			ND_PRINT((ndo, " [%d]", len));
-		rr = (struct rtcp_rr *)(rh + 1);
+		rr = (const struct rtcp_rr *)(rh + 1);
 		if (ndo->ndo_vflag)
 			ND_PRINT((ndo, " %u", EXTRACT_32BITS(&rh->rh_ssrc)));
 		break;
@@ -256,7 +254,7 @@ rtcp_print(netdissect_options *ndo, const u_char *hdr, const u_char *ep)
 	if (cnt > 1)
 		ND_PRINT((ndo, " c%d", cnt));
 	while (--cnt >= 0) {
-		if ((u_char *)(rr + 1) > ep) {
+		if ((const u_char *)(rr + 1) > ep) {
 			ND_PRINT((ndo, " [|rtcp]"));
 			return (ep);
 		}
@@ -276,7 +274,7 @@ static int udp_cksum(netdissect_options *ndo, register const struct ip *ip,
 		     register const struct udphdr *up,
 		     register u_int len)
 {
-	return nextproto4_cksum(ndo, ip, (const u_int8_t *)(void *)up, len, len,
+	return nextproto4_cksum(ndo, ip, (const uint8_t *)(const void *)up, len, len,
 				IPPROTO_UDP);
 }
 
@@ -284,7 +282,7 @@ static int udp_cksum(netdissect_options *ndo, register const struct ip *ip,
 static int udp6_cksum(const struct ip6_hdr *ip6, const struct udphdr *up,
 	u_int len)
 {
-	return nextproto6_cksum(ip6, (const u_int8_t *)(void *)up, len, len,
+	return nextproto6_cksum(ip6, (const uint8_t *)(const void *)up, len, len,
 	    IPPROTO_UDP);
 }
 #endif
@@ -304,13 +302,13 @@ udpipaddr_print(netdissect_options *ndo, const struct ip *ip, int sport, int dpo
 		if (ip6->ip6_nxt == IPPROTO_UDP) {
 			if (sport == -1) {
 				ND_PRINT((ndo, "%s > %s: ",
-					ip6addr_string(&ip6->ip6_src),
-					ip6addr_string(&ip6->ip6_dst)));
+					ip6addr_string(ndo, &ip6->ip6_src),
+					ip6addr_string(ndo, &ip6->ip6_dst)));
 			} else {
 				ND_PRINT((ndo, "%s.%s > %s.%s: ",
-					ip6addr_string(&ip6->ip6_src),
+					ip6addr_string(ndo, &ip6->ip6_src),
 					udpport_string(sport),
-					ip6addr_string(&ip6->ip6_dst),
+					ip6addr_string(ndo, &ip6->ip6_dst),
 					udpport_string(dport)));
 			}
 		} else {
@@ -326,13 +324,13 @@ udpipaddr_print(netdissect_options *ndo, const struct ip *ip, int sport, int dpo
 		if (ip->ip_p == IPPROTO_UDP) {
 			if (sport == -1) {
 				ND_PRINT((ndo, "%s > %s: ",
-					ipaddr_string(&ip->ip_src),
-					ipaddr_string(&ip->ip_dst)));
+					ipaddr_string(ndo, &ip->ip_src),
+					ipaddr_string(ndo, &ip->ip_dst)));
 			} else {
 				ND_PRINT((ndo, "%s.%s > %s.%s: ",
-					ipaddr_string(&ip->ip_src),
+					ipaddr_string(ndo, &ip->ip_src),
 					udpport_string(sport),
-					ipaddr_string(&ip->ip_dst),
+					ipaddr_string(ndo, &ip->ip_dst),
 					udpport_string(dport)));
 			}
 		} else {
@@ -353,22 +351,21 @@ udp_print(netdissect_options *ndo, register const u_char *bp, u_int length,
 	register const struct ip *ip;
 	register const u_char *cp;
 	register const u_char *ep = bp + length;
-	u_int16_t sport, dport, ulen;
+	uint16_t sport, dport, ulen;
 #ifdef INET6
 	register const struct ip6_hdr *ip6;
 #endif
 
 	if (ep > ndo->ndo_snapend)
 		ep = ndo->ndo_snapend;
-	up = (struct udphdr *)bp;
-	ip = (struct ip *)bp2;
+	up = (const struct udphdr *)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*/
-	cp = (u_char *)(up + 1);
 	if (!ND_TTEST(up->uh_dport)) {
 		udpipaddr_print(ndo, ip, -1, -1);
 		ND_PRINT((ndo, "[|udp]"));
@@ -383,50 +380,54 @@ udp_print(netdissect_options *ndo, register const u_char *bp, u_int length,
 		ND_PRINT((ndo, "truncated-udp %d", length));
 		return;
 	}
+	ulen = EXTRACT_16BITS(&up->uh_ulen);
+	if (ulen < sizeof(struct udphdr)) {
+		udpipaddr_print(ndo, ip, sport, dport);
+		ND_PRINT((ndo, "truncated-udplength %d", ulen));
+		return;
+	}
+	ulen -= sizeof(struct udphdr);
 	length -= sizeof(struct udphdr);
+	if (ulen < length)
+		length = ulen;
 
+	cp = (const u_char *)(up + 1);
 	if (cp > ndo->ndo_snapend) {
 		udpipaddr_print(ndo, ip, sport, dport);
 		ND_PRINT((ndo, "[|udp]"));
 		return;
 	}
 
-	ulen = EXTRACT_16BITS(&up->uh_ulen);
-	if (ulen < 8) {
-		udpipaddr_print(ndo, ip, sport, dport);
-		ND_PRINT((ndo, "truncated-udplength %d", ulen));
-		return;
-	}
 	if (ndo->ndo_packettype) {
-		register struct sunrpc_msg *rp;
+		register const struct sunrpc_msg *rp;
 		enum sunrpc_msg_type direction;
 
 		switch (ndo->ndo_packettype) {
 
 		case PT_VAT:
 			udpipaddr_print(ndo, ip, sport, dport);
-			vat_print(ndo, (void *)(up + 1), up);
+			vat_print(ndo, (const void *)(up + 1), up);
 			break;
 
 		case PT_WB:
 			udpipaddr_print(ndo, ip, sport, dport);
-			wb_print(ndo, (void *)(up + 1), length);
+			wb_print(ndo, (const void *)(up + 1), length);
 			break;
 
 		case PT_RPC:
-			rp = (struct sunrpc_msg *)(up + 1);
+			rp = (const struct sunrpc_msg *)(up + 1);
 			direction = (enum sunrpc_msg_type)EXTRACT_32BITS(&rp->rm_direction);
 			if (direction == SUNRPC_CALL)
-				sunrpcrequest_print(ndo, (u_char *)rp, length,
-				    (u_char *)ip);
+				sunrpcrequest_print(ndo, (const u_char *)rp, length,
+				    (const u_char *)ip);
 			else
-				nfsreply_print(ndo, (u_char *)rp, length,
-				    (u_char *)ip);			/*XXX*/
+				nfsreply_print(ndo, (const u_char *)rp, length,
+				    (const u_char *)ip);			/*XXX*/
 			break;
 
 		case PT_RTP:
 			udpipaddr_print(ndo, ip, sport, dport);
-			rtp_print(ndo, (void *)(up + 1), length, up);
+			rtp_print(ndo, (const void *)(up + 1), length, up);
 			break;
 
 		case PT_RTCP:
@@ -442,7 +443,7 @@ udp_print(netdissect_options *ndo, register const u_char *bp, u_int length,
 
 		case PT_CNFP:
 			udpipaddr_print(ndo, ip, sport, dport);
-			cnfp_print(ndo, cp, (const u_char *)ip);
+			cnfp_print(ndo, cp);
 			break;
 
 		case PT_TFTP:
@@ -485,33 +486,33 @@ udp_print(netdissect_options *ndo, register const u_char *bp, u_int length,
 
 	udpipaddr_print(ndo, ip, sport, dport);
 	if (!ndo->ndo_qflag) {
-		register struct sunrpc_msg *rp;
+		register const struct sunrpc_msg *rp;
 		enum sunrpc_msg_type direction;
 
-		rp = (struct sunrpc_msg *)(up + 1);
+		rp = (const struct sunrpc_msg *)(up + 1);
 		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, length,
-				    (u_char *)ip);
+				nfsreq_print_noaddr(ndo, (const u_char *)rp, length,
+				    (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, length,
-				    (u_char *)ip);
+				nfsreply_print_noaddr(ndo, (const u_char *)rp, length,
+				    (const u_char *)ip);
 				return;
 			}
 #ifdef notdef
 			if (dport == SUNRPC_PORT && direction == SUNRPC_CALL) {
-				sunrpcrequest_print((u_char *)rp, length, (u_char *)ip);
+				sunrpcrequest_print((const u_char *)rp, length, (const u_char *)ip);
 				return;
 			}
 #endif
 		}
-		if (ND_TTEST(((struct LAP *)cp)->type) &&
-		    ((struct LAP *)cp)->type == lapDDP &&
+		if (ND_TTEST(((const struct LAP *)cp)->type) &&
+		    ((const struct LAP *)cp)->type == lapDDP &&
 		    (atalk_port(sport) || atalk_port(dport))) {
 			if (ndo->ndo_vflag)
 				ND_PRINT((ndo, "kip "));
@@ -522,7 +523,7 @@ udp_print(netdissect_options *ndo, register const u_char *bp, u_int length,
 
 	if (ndo->ndo_vflag && !ndo->ndo_Kflag && !fragmented) {
                 /* Check the checksum, if possible. */
-                u_int16_t sum, udp_sum;
+                uint16_t sum, udp_sum;
 
 		/*
 		 * XXX - do this even if vflag == 1?
@@ -568,10 +569,10 @@ udp_print(netdissect_options *ndo, register const u_char *bp, u_int length,
 		else if (ISPORT(MULTICASTDNS_PORT))
 			ns_print(ndo, (const u_char *)(up + 1), length, 1);
 		else if (ISPORT(TIMED_PORT))
-			timed_print((const u_char *)(up + 1));
+			timed_print(ndo, (const u_char *)(up + 1));
 		else if (ISPORT(TFTP_PORT))
 			tftp_print(ndo, (const u_char *)(up + 1), length);
-		else if (ISPORT(IPPORT_BOOTPC) || ISPORT(IPPORT_BOOTPS))
+		else if (ISPORT(BOOTPC_PORT) || ISPORT(BOOTPS_PORT))
 			bootp_print(ndo, (const u_char *)(up + 1), length);
 		else if (ISPORT(RIP_PORT))
 			rip_print(ndo, (const u_char *)(up + 1), length);
@@ -615,7 +616,7 @@ udp_print(netdissect_options *ndo, register const u_char *bp, u_int length,
 		else if ((sport >= RX_PORT_LOW && sport <= RX_PORT_HIGH) ||
 			 (dport >= RX_PORT_LOW && dport <= RX_PORT_HIGH))
 			rx_print(ndo, (const void *)(up + 1), length, sport, dport,
-				 (u_char *) ip);
+				 (const u_char *) ip);
 #ifdef INET6
 		else if (ISPORT(RIPNG_PORT))
 			ripng_print(ndo, (const u_char *)(up + 1), length);
@@ -636,7 +637,8 @@ udp_print(netdissect_options *ndo, register const u_char *bp, u_int length,
 		else if (ISPORT(RADIUS_PORT) ||
 			 ISPORT(RADIUS_NEW_PORT) ||
 			 ISPORT(RADIUS_ACCOUNTING_PORT) ||
-			 ISPORT(RADIUS_NEW_ACCOUNTING_PORT) )
+			 ISPORT(RADIUS_NEW_ACCOUNTING_PORT) ||
+			 ISPORT(RADIUS_COA_PORT) )
 			radius_print(ndo, (const u_char *)(up+1), length);
 		else if (dport == HSRP_PORT)
 			hsrp_print(ndo, (const u_char *)(up + 1), length);
@@ -676,12 +678,23 @@ udp_print(netdissect_options *ndo, register const u_char *bp, u_int length,
 			otv_print(ndo, (const u_char *)(up + 1), length);
                 else if (ISPORT(VXLAN_PORT))
 			vxlan_print(ndo, (const u_char *)(up + 1), length);
-		else
-			ND_PRINT((ndo, "UDP, length %u",
-			    (u_int32_t)(ulen - sizeof(*up))));
+                else if (ISPORT(GENEVE_PORT))
+			geneve_print(ndo, (const u_char *)(up + 1), length);
+		else {
+			if (ulen > length)
+				ND_PRINT((ndo, "UDP, bad length %u > %u",
+				    ulen, length));
+			else
+				ND_PRINT((ndo, "UDP, length %u", ulen));
+		}
 #undef ISPORT
-	} else
-		ND_PRINT((ndo, "UDP, length %u", (u_int32_t)(ulen - sizeof(*up))));
+	} else {
+		if (ulen > length)
+			ND_PRINT((ndo, "UDP, bad length %u > %u",
+			    ulen, length));
+		else
+			ND_PRINT((ndo, "UDP, length %u", ulen));
+	}
 }