X-Git-Url: https://git.tcpdump.org/tcpdump/blobdiff_plain/87a92d9f2820c4a0cbabe99e23ae48354b076545..10ac80fdecfa9b9b7d259d8f50d0b72ef1b18f12:/print-atalk.c

diff --git a/print-atalk.c b/print-atalk.c
index 278495f8..c921dc1a 100644
--- a/print-atalk.c
+++ b/print-atalk.c
@@ -51,9 +51,9 @@ struct aarp {
 	nd_uint16_t	htype, ptype;
 	nd_uint8_t	halen, palen;
 	nd_uint16_t	op;
-	uint8_t		hsaddr[6];
+	uint8_t		hsaddr[MAC_ADDR_LEN];
 	uint8_t		psaddr[4];
-	uint8_t		hdaddr[6];
+	uint8_t		hdaddr[MAC_ADDR_LEN];
 	uint8_t		pdaddr[4];
 };
 
@@ -72,19 +72,20 @@ static const char *ddpskt_string(netdissect_options *, u_int);
 /*
  * Print LLAP packets received on a physical LocalTalk interface.
  */
-u_int
+void
 ltalk_if_print(netdissect_options *ndo,
                const struct pcap_pkthdr *h, const u_char *p)
 {
 	u_int hdrlen;
 
-	ndo->ndo_protocol = "ltalk_if";
+	ndo->ndo_protocol = "ltalk";
 	hdrlen = llap_print(ndo, p, h->len);
 	if (hdrlen == 0) {
 		/* Cut short by the snapshot length. */
-		return (h->caplen);
+		ndo->ndo_ll_hdr_len += h->caplen;
+		return;
 	}
-	return (hdrlen);
+	ndo->ndo_ll_hdr_len += hdrlen;
 }
 
 /*
@@ -106,14 +107,14 @@ llap_print(netdissect_options *ndo,
 		return (length);
 	}
 	if (!ND_TTEST_LEN(bp, sizeof(*lp))) {
-		ND_PRINT(" [|llap]");
+		nd_print_trunc(ndo);
 		return (0);	/* cut short by the snapshot length */
 	}
 	lp = (const struct LAP *)bp;
 	bp += sizeof(*lp);
 	length -= sizeof(*lp);
 	hdrlen = sizeof(*lp);
-	switch (EXTRACT_U_1(lp->type)) {
+	switch (GET_U_1(lp->type)) {
 
 	case lapShortDDP:
 		if (length < ddpSSize) {
@@ -126,13 +127,16 @@ llap_print(netdissect_options *ndo,
 		}
 		sdp = (const struct atShortDDP *)bp;
 		ND_PRINT("%s.%s",
-		    ataddr_string(ndo, 0, EXTRACT_U_1(lp->src)), ddpskt_string(ndo, EXTRACT_U_1(sdp->srcSkt)));
+		    ataddr_string(ndo, 0, GET_U_1(lp->src)),
+		    ddpskt_string(ndo, GET_U_1(sdp->srcSkt)));
 		ND_PRINT(" > %s.%s:",
-		    ataddr_string(ndo, 0, EXTRACT_U_1(lp->dst)), ddpskt_string(ndo, EXTRACT_U_1(sdp->dstSkt)));
+		    ataddr_string(ndo, 0, GET_U_1(lp->dst)),
+		    ddpskt_string(ndo, GET_U_1(sdp->dstSkt)));
 		bp += ddpSSize;
 		length -= ddpSSize;
 		hdrlen += ddpSSize;
-		ddp_print(ndo, bp, length, EXTRACT_U_1(sdp->type), 0, EXTRACT_U_1(lp->src), EXTRACT_U_1(sdp->srcSkt));
+		ddp_print(ndo, bp, length, GET_U_1(sdp->type), 0,
+			  GET_U_1(lp->src), GET_U_1(sdp->srcSkt));
 		break;
 
 	case lapDDP:
@@ -145,16 +149,18 @@ llap_print(netdissect_options *ndo,
 			return (0);	/* cut short by the snapshot length */
 		}
 		dp = (const struct atDDP *)bp;
-		snet = EXTRACT_BE_U_2(dp->srcNet);
-		ND_PRINT("%s.%s", ataddr_string(ndo, snet, EXTRACT_U_1(dp->srcNode)),
-		    ddpskt_string(ndo, EXTRACT_U_1(dp->srcSkt)));
+		snet = GET_BE_U_2(dp->srcNet);
+		ND_PRINT("%s.%s",
+			 ataddr_string(ndo, snet, GET_U_1(dp->srcNode)),
+			 ddpskt_string(ndo, GET_U_1(dp->srcSkt)));
 		ND_PRINT(" > %s.%s:",
-		    ataddr_string(ndo, EXTRACT_BE_U_2(dp->dstNet), EXTRACT_U_1(dp->dstNode)),
-		    ddpskt_string(ndo, EXTRACT_U_1(dp->dstSkt)));
+		    ataddr_string(ndo, GET_BE_U_2(dp->dstNet), GET_U_1(dp->dstNode)),
+		    ddpskt_string(ndo, GET_U_1(dp->dstSkt)));
 		bp += ddpSize;
 		length -= ddpSize;
 		hdrlen += ddpSize;
-		ddp_print(ndo, bp, length, EXTRACT_U_1(dp->type), snet, EXTRACT_U_1(dp->srcNode), EXTRACT_U_1(dp->srcSkt));
+		ddp_print(ndo, bp, length, GET_U_1(dp->type), snet,
+			  GET_U_1(dp->srcNode), GET_U_1(dp->srcSkt));
 		break;
 
 #ifdef notdef
@@ -165,7 +171,8 @@ llap_print(netdissect_options *ndo,
 
 	default:
 		ND_PRINT("%u > %u at-lap#%u %u",
-		    EXTRACT_U_1(lp->src), EXTRACT_U_1(lp->dst), EXTRACT_U_1(lp->type), length);
+		    GET_U_1(lp->src), GET_U_1(lp->dst), GET_U_1(lp->type),
+		    length);
 		break;
 	}
 	return (hdrlen);
@@ -196,15 +203,16 @@ atalk_print(netdissect_options *ndo,
 		return;
 	}
 	dp = (const struct atDDP *)bp;
-	snet = EXTRACT_BE_U_2(dp->srcNet);
-	ND_PRINT("%s.%s", ataddr_string(ndo, snet, EXTRACT_U_1(dp->srcNode)),
-	       ddpskt_string(ndo, EXTRACT_U_1(dp->srcSkt)));
+	snet = GET_BE_U_2(dp->srcNet);
+	ND_PRINT("%s.%s", ataddr_string(ndo, snet, GET_U_1(dp->srcNode)),
+		 ddpskt_string(ndo, GET_U_1(dp->srcSkt)));
 	ND_PRINT(" > %s.%s: ",
-	       ataddr_string(ndo, EXTRACT_BE_U_2(dp->dstNet), EXTRACT_U_1(dp->dstNode)),
-	       ddpskt_string(ndo, EXTRACT_U_1(dp->dstSkt)));
+	       ataddr_string(ndo, GET_BE_U_2(dp->dstNet), GET_U_1(dp->dstNode)),
+	       ddpskt_string(ndo, GET_U_1(dp->dstSkt)));
 	bp += ddpSize;
 	length -= ddpSize;
-	ddp_print(ndo, bp, length, EXTRACT_U_1(dp->type), snet, EXTRACT_U_1(dp->srcNode), EXTRACT_U_1(dp->srcSkt));
+	ddp_print(ndo, bp, length, GET_U_1(dp->type), snet,
+		  GET_U_1(dp->srcNode), GET_U_1(dp->srcSkt));
 }
 
 /* XXX should probably pass in the snap header and do checks like arp_print() */
@@ -221,24 +229,24 @@ aarp_print(netdissect_options *ndo,
 	ap = (const struct aarp *)bp;
 	if (!ND_TTEST_SIZE(ap)) {
 		/* Just bail if we don't have the whole chunk. */
-		ND_PRINT(" [|aarp]");
+		nd_print_trunc(ndo);
 		return;
 	}
 	if (length < sizeof(*ap)) {
 		ND_PRINT(" [|aarp %u]", length);
 		return;
 	}
-	if (EXTRACT_BE_U_2(ap->htype) == 1 &&
-	    EXTRACT_BE_U_2(ap->ptype) == ETHERTYPE_ATALK &&
-	    EXTRACT_U_1(ap->halen) == 6 && EXTRACT_U_1(ap->palen) == 4 )
-		switch (EXTRACT_BE_U_2(ap->op)) {
+	if (GET_BE_U_2(ap->htype) == 1 &&
+	    GET_BE_U_2(ap->ptype) == ETHERTYPE_ATALK &&
+	    GET_U_1(ap->halen) == MAC_ADDR_LEN && GET_U_1(ap->palen) == 4)
+		switch (GET_BE_U_2(ap->op)) {
 
 		case 1:				/* request */
 			ND_PRINT("who-has %s tell %s", AT(pdaddr), AT(psaddr));
 			return;
 
 		case 2:				/* response */
-			ND_PRINT("reply %s is-at %s", AT(psaddr), etheraddr_string(ndo, ap->hsaddr));
+			ND_PRINT("reply %s is-at %s", AT(psaddr), GET_ETHERADDR_STRING(ap->hsaddr));
 			return;
 
 		case 3:				/* probe (oy!) */
@@ -246,8 +254,8 @@ aarp_print(netdissect_options *ndo,
 			return;
 		}
 	ND_PRINT("len %u op %u htype %u ptype %#x halen %u palen %u",
-	    length, EXTRACT_BE_U_2(ap->op), EXTRACT_BE_U_2(ap->htype),
-	    EXTRACT_BE_U_2(ap->ptype), EXTRACT_U_1(ap->halen), EXTRACT_U_1(ap->palen));
+	    length, GET_BE_U_2(ap->op), GET_BE_U_2(ap->htype),
+	    GET_BE_U_2(ap->ptype), GET_U_1(ap->halen), GET_U_1(ap->palen));
 }
 
 /*
@@ -296,15 +304,15 @@ atp_print(netdissect_options *ndo,
 		return;
 	}
 	length -= sizeof(*ap);
-	control = EXTRACT_U_1(ap->control);
+	control = GET_U_1(ap->control);
 	switch (control & 0xc0) {
 
 	case atpReqCode:
 		ND_PRINT(" atp-req%s %u",
 			     control & atpXO? " " : "*",
-			     EXTRACT_BE_U_2(ap->transID));
+			     GET_BE_U_2(ap->transID));
 
-		atp_bitmap_print(ndo, EXTRACT_U_1(ap->bitmap));
+		atp_bitmap_print(ndo, GET_U_1(ap->bitmap));
 
 		if (length != 0)
 			ND_PRINT(" [len=%u]", length);
@@ -325,7 +333,8 @@ atp_print(netdissect_options *ndo,
 	case atpRspCode:
 		ND_PRINT(" atp-resp%s%u:%u (%u)",
 			     control & atpEOM? "*" : " ",
-			     EXTRACT_BE_U_2(ap->transID), EXTRACT_U_1(ap->bitmap), length);
+			     GET_BE_U_2(ap->transID), GET_U_1(ap->bitmap),
+			     length);
 		switch (control & (atpXO|atpSTS)) {
 		case atpXO:
 			ND_PRINT(" [XO]");
@@ -340,9 +349,9 @@ atp_print(netdissect_options *ndo,
 		break;
 
 	case atpRelCode:
-		ND_PRINT(" atp-rel  %u", EXTRACT_BE_U_2(ap->transID));
+		ND_PRINT(" atp-rel  %u", GET_BE_U_2(ap->transID));
 
-		atp_bitmap_print(ndo, EXTRACT_U_1(ap->bitmap));
+		atp_bitmap_print(ndo, GET_U_1(ap->bitmap));
 
 		/* length should be zero */
 		if (length)
@@ -368,10 +377,10 @@ atp_print(netdissect_options *ndo,
 
 	default:
 		ND_PRINT(" atp-0x%x  %u (%u)", control,
-			     EXTRACT_BE_U_2(ap->transID), length);
+			     GET_BE_U_2(ap->transID), length);
 		break;
 	}
-	data = EXTRACT_BE_U_4(ap->userData);
+	data = GET_BE_U_4(ap->userData);
 	if (data != 0)
 		ND_PRINT(" 0x%x", data);
 }
@@ -435,12 +444,13 @@ nbp_print(netdissect_options *ndo,
 		nd_print_trunc(ndo);
 		return;
 	}
-	control = EXTRACT_U_1(np->control);
+	control = GET_U_1(np->control);
 	switch (i = (control & 0xf0)) {
 
 	case nbpBrRq:
 	case nbpLkUp:
-		ND_PRINT(i == nbpLkUp? " nbp-lkup %u:":" nbp-brRq %u:", EXTRACT_U_1(np->id));
+		ND_PRINT(i == nbpLkUp? " nbp-lkup %u:":" nbp-brRq %u:",
+			 GET_U_1(np->id));
 		if ((const u_char *)(tp + 1) > ep) {
 			nd_print_trunc(ndo);
 			return;
@@ -453,19 +463,19 @@ nbp_print(netdissect_options *ndo,
 		 */
 		if ((control & 0xf) != 1)
 			ND_PRINT(" [ntup=%u]", control & 0xf);
-		if (EXTRACT_U_1(tp->enumerator))
-			ND_PRINT(" [enum=%u]", EXTRACT_U_1(tp->enumerator));
-		if (EXTRACT_BE_U_2(tp->net) != snet ||
-		    EXTRACT_U_1(tp->node) != snode ||
-		    EXTRACT_U_1(tp->skt) != skt)
+		if (GET_U_1(tp->enumerator))
+			ND_PRINT(" [enum=%u]", GET_U_1(tp->enumerator));
+		if (GET_BE_U_2(tp->net) != snet ||
+		    GET_U_1(tp->node) != snode ||
+		    GET_U_1(tp->skt) != skt)
 			ND_PRINT(" [addr=%s.%u]",
-			    ataddr_string(ndo, EXTRACT_BE_U_2(tp->net),
-					  EXTRACT_U_1(tp->node)),
-			    EXTRACT_U_1(tp->skt));
+			    ataddr_string(ndo, GET_BE_U_2(tp->net),
+					  GET_U_1(tp->node)),
+			    GET_U_1(tp->skt));
 		break;
 
 	case nbpLkUpReply:
-		ND_PRINT(" nbp-reply %u:", EXTRACT_U_1(np->id));
+		ND_PRINT(" nbp-reply %u:", GET_U_1(np->id));
 
 		/* print each of the tuples in the reply */
 		for (i = control & 0xf; i != 0 && tp; i--)
@@ -473,7 +483,8 @@ nbp_print(netdissect_options *ndo,
 		break;
 
 	default:
-		ND_PRINT(" nbp-0x%x  %u (%u)", control, EXTRACT_U_1(np->id), length);
+		ND_PRINT(" nbp-0x%x  %u (%u)", control, GET_U_1(np->id),
+			 length);
 		break;
 	}
 }
@@ -489,7 +500,7 @@ print_cstring(netdissect_options *ndo,
 		nd_print_trunc(ndo);
 		return (0);
 	}
-	length = EXTRACT_U_1(cp);
+	length = GET_U_1(cp);
 	cp++;
 
 	/* Spec says string can be at most 32 bytes long */
@@ -502,7 +513,7 @@ print_cstring(netdissect_options *ndo,
 			nd_print_trunc(ndo);
 			return (0);
 		}
-		fn_print_char(ndo, EXTRACT_U_1(cp));
+		fn_print_char(ndo, GET_U_1(cp));
 		cp++;
 		length--;
 	}
@@ -523,18 +534,18 @@ nbp_tuple_print(netdissect_options *ndo,
 	tpn = nbp_name_print(ndo, tp, ep);
 
 	/* if the enumerator isn't 1, print it */
-	if (EXTRACT_U_1(tp->enumerator) != 1)
-		ND_PRINT("(%u)", EXTRACT_U_1(tp->enumerator));
+	if (GET_U_1(tp->enumerator) != 1)
+		ND_PRINT("(%u)", GET_U_1(tp->enumerator));
 
 	/* if the socket doesn't match the src socket, print it */
-	if (EXTRACT_U_1(tp->skt) != skt)
-		ND_PRINT(" %u", EXTRACT_U_1(tp->skt));
+	if (GET_U_1(tp->skt) != skt)
+		ND_PRINT(" %u", GET_U_1(tp->skt));
 
 	/* if the address doesn't match the src address, it's an anomaly */
-	if (EXTRACT_BE_U_2(tp->net) != snet ||
-	    EXTRACT_U_1(tp->node) != snode)
+	if (GET_BE_U_2(tp->net) != snet ||
+	    GET_U_1(tp->node) != snode)
 		ND_PRINT(" [addr=%s]",
-		    ataddr_string(ndo, EXTRACT_BE_U_2(tp->net), EXTRACT_U_1(tp->node)));
+		    ataddr_string(ndo, GET_BE_U_2(tp->net), GET_U_1(tp->node)));
 
 	return (tpn);
 }
@@ -584,39 +595,57 @@ ataddr_string(netdissect_options *ndo,
 	FILE *fp;
 
 	/*
-	 * if this is the first call, see if there's an AppleTalk
-	 * number to name map file.
+	 * Are we doing address to name resolution?
 	 */
-	if (first && (first = 0, !ndo->ndo_nflag)
-	    && (fp = fopen("/etc/atalk.names", "r"))) {
-		char line[256];
-		u_int i1, i2;
-
-		while (fgets(line, sizeof(line), fp)) {
-			if (line[0] == '\n' || line[0] == 0 || line[0] == '#')
-				continue;
-			if (sscanf(line, "%u.%u %256s", &i1, &i2, nambuf) == 3)
-				/* got a hostname. */
-				i2 |= (i1 << 8);
-			else if (sscanf(line, "%u %256s", &i1, nambuf) == 2)
-				/* got a net name */
-				i2 = (i1 << 8) | 255;
-			else
-				continue;
-
-			for (tp = &hnametable[i2 & (HASHNAMESIZE-1)];
-			     tp->nxt; tp = tp->nxt)
-				;
-			tp->addr = i2;
-			tp->nxt = newhnamemem(ndo);
-			tp->name = strdup(nambuf);
-			if (tp->name == NULL)
-				(*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC,
-					"ataddr_string: strdup(nambuf)");
+	if (!ndo->ndo_nflag) {
+		/*
+		 * Yes.  Have we tried to open and read an AppleTalk
+		 * number to name map file?
+		 */
+		if (!first) {
+			/*
+			 * No; try to do so.
+			 */
+			first = 0;
+			fp = fopen("/etc/atalk.names", "r");
+			if (fp != NULL) {
+				char line[256];
+				u_int i1, i2;
+
+				while (fgets(line, sizeof(line), fp)) {
+					if (line[0] == '\n' || line[0] == 0 ||
+					    line[0] == '#')
+						continue;
+					if (sscanf(line, "%u.%u %256s", &i1,
+					    &i2, nambuf) == 3)
+						/* got a hostname. */
+						i2 |= (i1 << 8);
+					else if (sscanf(line, "%u %256s", &i1,
+					    nambuf) == 2)
+						/* got a net name */
+						i2 = (i1 << 8) | 255;
+					else
+						continue;
+
+					for (tp = &hnametable[i2 & (HASHNAMESIZE-1)];
+					     tp->nxt; tp = tp->nxt)
+						;
+					tp->addr = i2;
+					tp->nxt = newhnamemem(ndo);
+					tp->name = strdup(nambuf);
+					if (tp->name == NULL)
+						(*ndo->ndo_error)(ndo,
+						    S_ERR_ND_MEM_ALLOC,
+						    "%s: strdup(nambuf)", __func__);
+				}
+				fclose(fp);
+			}
 		}
-		fclose(fp);
 	}
 
+	/*
+	 * Now try to look up the address in the table.
+	 */
 	for (tp = &hnametable[i & (HASHNAMESIZE-1)]; tp->nxt; tp = tp->nxt)
 		if (tp->addr == i)
 			return (tp->name);
@@ -627,25 +656,25 @@ ataddr_string(netdissect_options *ndo,
 		if (tp2->addr == i) {
 			tp->addr = (atnet << 8) | athost;
 			tp->nxt = newhnamemem(ndo);
-			(void)nd_snprintf(nambuf, sizeof(nambuf), "%s.%u",
+			(void)snprintf(nambuf, sizeof(nambuf), "%s.%u",
 			    tp2->name, athost);
 			tp->name = strdup(nambuf);
 			if (tp->name == NULL)
 				(*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC,
-					"ataddr_string: strdup(nambuf)");
+					"%s: strdup(nambuf)", __func__);
 			return (tp->name);
 		}
 
 	tp->addr = (atnet << 8) | athost;
 	tp->nxt = newhnamemem(ndo);
 	if (athost != 255)
-		(void)nd_snprintf(nambuf, sizeof(nambuf), "%u.%u", atnet, athost);
+		(void)snprintf(nambuf, sizeof(nambuf), "%u.%u", atnet, athost);
 	else
-		(void)nd_snprintf(nambuf, sizeof(nambuf), "%u", atnet);
+		(void)snprintf(nambuf, sizeof(nambuf), "%u", atnet);
 	tp->name = strdup(nambuf);
 	if (tp->name == NULL)
 		(*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC,
-				  "ataddr_string: strdup(nambuf)");
+				  "%s: strdup(nambuf)", __func__);
 
 	return (tp->name);
 }
@@ -665,7 +694,7 @@ ddpskt_string(netdissect_options *ndo,
 	static char buf[8];
 
 	if (ndo->ndo_nflag) {
-		(void)nd_snprintf(buf, sizeof(buf), "%u", skt);
+		(void)snprintf(buf, sizeof(buf), "%u", skt);
 		return (buf);
 	}
 	return (tok2str(skt2str, "%u", skt));