X-Git-Url: https://git.tcpdump.org/tcpdump/blobdiff_plain/1cde6435df23876fb88998e38739def0dc7dca47..1fb50928ce27360c1c987312774f686b23c69b51:/print-pgm.c

diff --git a/print-pgm.c b/print-pgm.c
index d4c3b610..6d5c01ce 100644
--- a/print-pgm.c
+++ b/print-pgm.c
@@ -13,21 +13,21 @@
  * Original code by Andy Heffernan (ahh@juniper.net)
  */
 
-#define NETDISSECT_REWORKED
+/* \summary: Pragmatic General Multicast (PGM) printer */
+
 #ifdef HAVE_CONFIG_H
 #include "config.h"
 #endif
 
-#include <tcpdump-stdinc.h>
+#include <netdissect-stdinc.h>
 
-#include "interface.h"
+#include "netdissect.h"
 #include "extract.h"
 #include "addrtoname.h"
+#include "addrtostr.h"
 
 #include "ip.h"
-#ifdef INET6
 #include "ip6.h"
-#endif
 #include "ipproto.h"
 #include "af.h"
 
@@ -35,62 +35,62 @@
  * PGM header (RFC 3208)
  */
 struct pgm_header {
-    u_int16_t	pgm_sport;
-    u_int16_t	pgm_dport;
-    u_int8_t	pgm_type;
-    u_int8_t	pgm_options;
-    u_int16_t	pgm_sum;
-    u_int8_t	pgm_gsid[6];
-    u_int16_t	pgm_length;
+    uint16_t	pgm_sport;
+    uint16_t	pgm_dport;
+    uint8_t	pgm_type;
+    uint8_t	pgm_options;
+    uint16_t	pgm_sum;
+    uint8_t	pgm_gsid[6];
+    uint16_t	pgm_length;
 };
 
 struct pgm_spm {
-    u_int32_t	pgms_seq;
-    u_int32_t	pgms_trailseq;
-    u_int32_t	pgms_leadseq;
-    u_int16_t	pgms_nla_afi;
-    u_int16_t	pgms_reserved;
-    /* ... u_int8_t	pgms_nla[0]; */
+    uint32_t	pgms_seq;
+    uint32_t	pgms_trailseq;
+    uint32_t	pgms_leadseq;
+    uint16_t	pgms_nla_afi;
+    uint16_t	pgms_reserved;
+    /* ... uint8_t	pgms_nla[0]; */
     /* ... options */
 };
 
 struct pgm_nak {
-    u_int32_t	pgmn_seq;
-    u_int16_t	pgmn_source_afi;
-    u_int16_t	pgmn_reserved;
-    /* ... u_int8_t	pgmn_source[0]; */
-    /* ... u_int16_t	pgmn_group_afi */
-    /* ... u_int16_t	pgmn_reserved2; */
-    /* ... u_int8_t	pgmn_group[0]; */
+    uint32_t	pgmn_seq;
+    uint16_t	pgmn_source_afi;
+    uint16_t	pgmn_reserved;
+    /* ... uint8_t	pgmn_source[0]; */
+    /* ... uint16_t	pgmn_group_afi */
+    /* ... uint16_t	pgmn_reserved2; */
+    /* ... uint8_t	pgmn_group[0]; */
     /* ... options */
 };
 
 struct pgm_ack {
-    u_int32_t	pgma_rx_max_seq;
-    u_int32_t	pgma_bitmap;
+    uint32_t	pgma_rx_max_seq;
+    uint32_t	pgma_bitmap;
     /* ... options */
 };
 
 struct pgm_poll {
-    u_int32_t	pgmp_seq;
-    u_int16_t	pgmp_round;
-    u_int16_t	pgmp_reserved;
+    uint32_t	pgmp_seq;
+    uint16_t	pgmp_round;
+    uint16_t	pgmp_reserved;
     /* ... options */
 };
 
 struct pgm_polr {
-    u_int32_t	pgmp_seq;
-    u_int16_t	pgmp_round;
-    u_int16_t	pgmp_subtype;
-    u_int16_t	pgmp_nla_afi;
-    u_int16_t	pgmp_reserved;
-    /* ... u_int8_t	pgmp_nla[0]; */
+    uint32_t	pgmp_seq;
+    uint16_t	pgmp_round;
+    uint16_t	pgmp_subtype;
+    uint16_t	pgmp_nla_afi;
+    uint16_t	pgmp_reserved;
+    /* ... uint8_t	pgmp_nla[0]; */
     /* ... options */
 };
 
 struct pgm_data {
-    u_int32_t	pgmd_seq;
-    u_int32_t	pgmd_trailseq;
+    uint32_t	pgmd_seq;
+    uint32_t	pgmd_trailseq;
     /* ... options */
 };
 
@@ -150,43 +150,27 @@ pgm_print(netdissect_options *ndo,
 	register const struct pgm_header *pgm;
 	register const struct ip *ip;
 	register char ch;
-	u_int16_t sport, dport;
-	int addr_size;
-	const void *nla;
-	int nla_af;
-#ifdef INET6
+	uint16_t sport, dport;
+	u_int nla_afnum;
 	char nla_buf[INET6_ADDRSTRLEN];
 	register const struct ip6_hdr *ip6;
-#else
-	char nla_buf[INET_ADDRSTRLEN];
-#endif
-	u_int8_t opt_type, opt_len;
-	u_int32_t seq, opts_len, len, offset;
+	uint8_t opt_type, opt_len;
+	uint32_t seq, opts_len, len, offset;
 
-	pgm = (struct pgm_header *)bp;
-	ip = (struct ip *)bp2;
-#ifdef INET6
+	pgm = (const struct pgm_header *)bp;
+	ip = (const struct ip *)bp2;
 	if (IP_V(ip) == 6)
-		ip6 = (struct ip6_hdr *)bp2;
+		ip6 = (const struct ip6_hdr *)bp2;
 	else
 		ip6 = NULL;
-#else /* INET6 */
-	if (IP_V(ip) == 6) {
-		ND_PRINT((ndo, "Can't handle IPv6"));
-		return;
-	}
-#endif /* INET6 */
 	ch = '\0';
 	if (!ND_TTEST(pgm->pgm_dport)) {
-#ifdef INET6
 		if (ip6) {
 			ND_PRINT((ndo, "%s > %s: [|pgm]",
 				ip6addr_string(ndo, &ip6->ip6_src),
 				ip6addr_string(ndo, &ip6->ip6_dst)));
 			return;
-		} else
-#endif /* INET6 */
-		{
+		} else {
 			ND_PRINT((ndo, "%s > %s: [|pgm]",
 				ipaddr_string(ndo, &ip->ip_src),
 				ipaddr_string(ndo, &ip->ip_dst)));
@@ -197,30 +181,27 @@ pgm_print(netdissect_options *ndo,
 	sport = EXTRACT_16BITS(&pgm->pgm_sport);
 	dport = EXTRACT_16BITS(&pgm->pgm_dport);
 
-#ifdef INET6
 	if (ip6) {
 		if (ip6->ip6_nxt == IPPROTO_PGM) {
 			ND_PRINT((ndo, "%s.%s > %s.%s: ",
 				ip6addr_string(ndo, &ip6->ip6_src),
-				tcpport_string(sport),
+				tcpport_string(ndo, sport),
 				ip6addr_string(ndo, &ip6->ip6_dst),
-				tcpport_string(dport)));
+				tcpport_string(ndo, dport)));
 		} else {
 			ND_PRINT((ndo, "%s > %s: ",
-				tcpport_string(sport), tcpport_string(dport)));
+				tcpport_string(ndo, sport), tcpport_string(ndo, dport)));
 		}
-	} else
-#endif /*INET6*/
-	{
+	} else {
 		if (ip->ip_p == IPPROTO_PGM) {
 			ND_PRINT((ndo, "%s.%s > %s.%s: ",
 				ipaddr_string(ndo, &ip->ip_src),
-				tcpport_string(sport),
+				tcpport_string(ndo, sport),
 				ipaddr_string(ndo, &ip->ip_dst),
-				tcpport_string(dport)));
+				tcpport_string(ndo, dport)));
 		} else {
 			ND_PRINT((ndo, "%s > %s: ",
-				tcpport_string(sport), tcpport_string(dport)));
+				tcpport_string(ndo, sport), tcpport_string(ndo, dport)));
 		}
 	}
 
@@ -240,32 +221,28 @@ pgm_print(netdissect_options *ndo,
                      pgm->pgm_gsid[5]));
 	switch (pgm->pgm_type) {
 	case PGM_SPM: {
-	    struct pgm_spm *spm;
+	    const struct pgm_spm *spm;
 
-	    spm = (struct pgm_spm *)(pgm + 1);
+	    spm = (const struct pgm_spm *)(pgm + 1);
 	    ND_TCHECK(*spm);
+	    bp = (const u_char *) (spm + 1);
 
 	    switch (EXTRACT_16BITS(&spm->pgms_nla_afi)) {
 	    case AFNUM_INET:
-		addr_size = sizeof(struct in_addr);
-		nla_af = AF_INET;
+		ND_TCHECK2(*bp, sizeof(struct in_addr));
+		addrtostr(bp, nla_buf, sizeof(nla_buf));
+		bp += sizeof(struct in_addr);
 		break;
-#ifdef INET6
 	    case AFNUM_INET6:
-		addr_size = sizeof(struct in6_addr);
-		nla_af = AF_INET6;
+		ND_TCHECK2(*bp, sizeof(struct in6_addr));
+		addrtostr6(bp, nla_buf, sizeof(nla_buf));
+		bp += sizeof(struct in6_addr);
 		break;
-#endif
 	    default:
 		goto trunc;
 		break;
 	    }
-	    bp = (u_char *) (spm + 1);
-	    ND_TCHECK2(*bp, addr_size);
-	    nla = bp;
-	    bp += addr_size;
 
-	    inet_ntop(nla_af, nla, nla_buf, sizeof(nla_buf));
 	    ND_PRINT((ndo, "SPM seq %u trail %u lead %u nla %s",
 			 EXTRACT_32BITS(&spm->pgms_seq),
                          EXTRACT_32BITS(&spm->pgms_trailseq),
@@ -275,56 +252,51 @@ pgm_print(netdissect_options *ndo,
 	}
 
 	case PGM_POLL: {
-	    struct pgm_poll *poll;
+	    const struct pgm_poll *poll_msg;
 
-	    poll = (struct pgm_poll *)(pgm + 1);
-	    ND_TCHECK(*poll);
+	    poll_msg = (const struct pgm_poll *)(pgm + 1);
+	    ND_TCHECK(*poll_msg);
 	    ND_PRINT((ndo, "POLL seq %u round %u",
-			 EXTRACT_32BITS(&poll->pgmp_seq),
-                         EXTRACT_16BITS(&poll->pgmp_round)));
-	    bp = (u_char *) (poll + 1);
+			 EXTRACT_32BITS(&poll_msg->pgmp_seq),
+                         EXTRACT_16BITS(&poll_msg->pgmp_round)));
+	    bp = (const u_char *) (poll_msg + 1);
 	    break;
 	}
 	case PGM_POLR: {
-	    struct pgm_polr *polr;
-	    u_int32_t ivl, rnd, mask;
+	    const struct pgm_polr *polr;
+	    uint32_t ivl, rnd, mask;
 
-	    polr = (struct pgm_polr *)(pgm + 1);
+	    polr = (const struct pgm_polr *)(pgm + 1);
 	    ND_TCHECK(*polr);
+	    bp = (const u_char *) (polr + 1);
 
 	    switch (EXTRACT_16BITS(&polr->pgmp_nla_afi)) {
 	    case AFNUM_INET:
-		addr_size = sizeof(struct in_addr);
-		nla_af = AF_INET;
+		ND_TCHECK2(*bp, sizeof(struct in_addr));
+		addrtostr(bp, nla_buf, sizeof(nla_buf));
+		bp += sizeof(struct in_addr);
 		break;
-#ifdef INET6
 	    case AFNUM_INET6:
-		addr_size = sizeof(struct in6_addr);
-		nla_af = AF_INET6;
+		ND_TCHECK2(*bp, sizeof(struct in6_addr));
+		addrtostr6(bp, nla_buf, sizeof(nla_buf));
+		bp += sizeof(struct in6_addr);
 		break;
-#endif
 	    default:
 		goto trunc;
 		break;
 	    }
-	    bp = (u_char *) (polr + 1);
-	    ND_TCHECK2(*bp, addr_size);
-	    nla = bp;
-	    bp += addr_size;
-
-	    inet_ntop(nla_af, nla, nla_buf, sizeof(nla_buf));
 
-	    ND_TCHECK2(*bp, sizeof(u_int32_t));
+	    ND_TCHECK2(*bp, sizeof(uint32_t));
 	    ivl = EXTRACT_32BITS(bp);
-	    bp += sizeof(u_int32_t);
+	    bp += sizeof(uint32_t);
 
-	    ND_TCHECK2(*bp, sizeof(u_int32_t));
+	    ND_TCHECK2(*bp, sizeof(uint32_t));
 	    rnd = EXTRACT_32BITS(bp);
-	    bp += sizeof(u_int32_t);
+	    bp += sizeof(uint32_t);
 
-	    ND_TCHECK2(*bp, sizeof(u_int32_t));
+	    ND_TCHECK2(*bp, sizeof(uint32_t));
 	    mask = EXTRACT_32BITS(bp);
-	    bp += sizeof(u_int32_t);
+	    bp += sizeof(uint32_t);
 
 	    ND_PRINT((ndo, "POLR seq %u round %u nla %s ivl %u rnd 0x%08x "
 			 "mask 0x%08x", EXTRACT_32BITS(&polr->pgmp_seq),
@@ -332,43 +304,38 @@ pgm_print(netdissect_options *ndo,
 	    break;
 	}
 	case PGM_ODATA: {
-	    struct pgm_data *odata;
+	    const struct pgm_data *odata;
 
-	    odata = (struct pgm_data *)(pgm + 1);
+	    odata = (const struct pgm_data *)(pgm + 1);
 	    ND_TCHECK(*odata);
 	    ND_PRINT((ndo, "ODATA trail %u seq %u",
 			 EXTRACT_32BITS(&odata->pgmd_trailseq),
 			 EXTRACT_32BITS(&odata->pgmd_seq)));
-	    bp = (u_char *) (odata + 1);
+	    bp = (const u_char *) (odata + 1);
 	    break;
 	}
 
 	case PGM_RDATA: {
-	    struct pgm_data *rdata;
+	    const struct pgm_data *rdata;
 
-	    rdata = (struct pgm_data *)(pgm + 1);
+	    rdata = (const struct pgm_data *)(pgm + 1);
 	    ND_TCHECK(*rdata);
 	    ND_PRINT((ndo, "RDATA trail %u seq %u",
 			 EXTRACT_32BITS(&rdata->pgmd_trailseq),
 			 EXTRACT_32BITS(&rdata->pgmd_seq)));
-	    bp = (u_char *) (rdata + 1);
+	    bp = (const u_char *) (rdata + 1);
 	    break;
 	}
 
 	case PGM_NAK:
 	case PGM_NULLNAK:
 	case PGM_NCF: {
-	    struct pgm_nak *nak;
-	    const void *source, *group;
-	    int source_af, group_af;
-#ifdef INET6
+	    const struct pgm_nak *nak;
 	    char source_buf[INET6_ADDRSTRLEN], group_buf[INET6_ADDRSTRLEN];
-#else
-	    char source_buf[INET_ADDRSTRLEN], group_buf[INET_ADDRSTRLEN];
-#endif
 
-	    nak = (struct pgm_nak *)(pgm + 1);
+	    nak = (const struct pgm_nak *)(pgm + 1);
 	    ND_TCHECK(*nak);
+	    bp = (const u_char *) (nak + 1);
 
 	    /*
 	     * Skip past the source, saving info along the way
@@ -376,53 +343,44 @@ pgm_print(netdissect_options *ndo,
 	     */
 	    switch (EXTRACT_16BITS(&nak->pgmn_source_afi)) {
 	    case AFNUM_INET:
-		addr_size = sizeof(struct in_addr);
-		source_af = AF_INET;
+		ND_TCHECK2(*bp, sizeof(struct in_addr));
+		addrtostr(bp, source_buf, sizeof(source_buf));
+		bp += sizeof(struct in_addr);
 		break;
-#ifdef INET6
 	    case AFNUM_INET6:
-		addr_size = sizeof(struct in6_addr);
-		source_af = AF_INET6;
+		ND_TCHECK2(*bp, sizeof(struct in6_addr));
+		addrtostr6(bp, source_buf, sizeof(source_buf));
+		bp += sizeof(struct in6_addr);
 		break;
-#endif
 	    default:
 		goto trunc;
 		break;
 	    }
-	    bp = (u_char *) (nak + 1);
-	    ND_TCHECK2(*bp, addr_size);
-	    source = bp;
-	    bp += addr_size;
 
 	    /*
 	     * Skip past the group, saving info along the way
 	     * and stopping if we don't have enough.
 	     */
+	    bp += (2 * sizeof(uint16_t));
 	    switch (EXTRACT_16BITS(bp)) {
 	    case AFNUM_INET:
-		addr_size = sizeof(struct in_addr);
-		group_af = AF_INET;
+		ND_TCHECK2(*bp, sizeof(struct in_addr));
+		addrtostr(bp, group_buf, sizeof(group_buf));
+		bp += sizeof(struct in_addr);
 		break;
-#ifdef INET6
 	    case AFNUM_INET6:
-		addr_size = sizeof(struct in6_addr);
-		group_af = AF_INET6;
+		ND_TCHECK2(*bp, sizeof(struct in6_addr));
+		addrtostr6(bp, group_buf, sizeof(group_buf));
+		bp += sizeof(struct in6_addr);
 		break;
-#endif
 	    default:
 		goto trunc;
 		break;
 	    }
-	    bp += (2 * sizeof(u_int16_t));
-	    ND_TCHECK2(*bp, addr_size);
-	    group = bp;
-	    bp += addr_size;
 
 	    /*
 	     * Options decoding can go here.
 	     */
-	    inet_ntop(source_af, source, source_buf, sizeof(source_buf));
-	    inet_ntop(group_af, group, group_buf, sizeof(group_buf));
 	    switch (pgm->pgm_type) {
 		case PGM_NAK:
 		    ND_PRINT((ndo, "NAK "));
@@ -442,13 +400,13 @@ pgm_print(netdissect_options *ndo,
 	}
 
 	case PGM_ACK: {
-	    struct pgm_ack *ack;
+	    const struct pgm_ack *ack;
 
-	    ack = (struct pgm_ack *)(pgm + 1);
+	    ack = (const struct pgm_ack *)(pgm + 1);
 	    ND_TCHECK(*ack);
 	    ND_PRINT((ndo, "ACK seq %u",
 			 EXTRACT_32BITS(&ack->pgma_rx_max_seq)));
-	    bp = (u_char *) (ack + 1);
+	    bp = (const u_char *) (ack + 1);
 	    break;
 	}
 
@@ -490,7 +448,7 @@ pgm_print(netdissect_options *ndo,
 		ND_PRINT((ndo, "[Bad total option length %u < 4]", opts_len));
 		return;
 	    }
-	    bp += sizeof(u_int16_t);
+	    bp += sizeof(uint16_t);
 	    ND_PRINT((ndo, " OPTS LEN %d", opts_len));
 	    opts_len -= 4;
 
@@ -522,7 +480,7 @@ pgm_print(netdissect_options *ndo,
 			return;
 		    }
 		    ND_PRINT((ndo, " OPTS LEN (extra?) %d", EXTRACT_16BITS(bp)));
-		    bp += sizeof(u_int16_t);
+		    bp += sizeof(uint16_t);
 		    opts_len -= 4;
 		    break;
 
@@ -533,29 +491,29 @@ pgm_print(netdissect_options *ndo,
 		    }
 		    bp += 2;
 		    seq = EXTRACT_32BITS(bp);
-		    bp += sizeof(u_int32_t);
+		    bp += sizeof(uint32_t);
 		    offset = EXTRACT_32BITS(bp);
-		    bp += sizeof(u_int32_t);
+		    bp += sizeof(uint32_t);
 		    len = EXTRACT_32BITS(bp);
-		    bp += sizeof(u_int32_t);
+		    bp += sizeof(uint32_t);
 		    ND_PRINT((ndo, " FRAG seq %u off %u len %u", seq, offset, len));
 		    opts_len -= 16;
 		    break;
 
 		case PGM_OPT_NAK_LIST:
 		    bp += 2;
-		    opt_len -= sizeof(u_int32_t);	/* option header */
+		    opt_len -= sizeof(uint32_t);	/* option header */
 		    ND_PRINT((ndo, " NAK LIST"));
 		    while (opt_len) {
-			if (opt_len < sizeof(u_int32_t)) {
+			if (opt_len < sizeof(uint32_t)) {
 			    ND_PRINT((ndo, "[Option length not a multiple of 4]"));
 			    return;
 			}
-			ND_TCHECK2(*bp, sizeof(u_int32_t));
+			ND_TCHECK2(*bp, sizeof(uint32_t));
 			ND_PRINT((ndo, " %u", EXTRACT_32BITS(bp)));
-			bp += sizeof(u_int32_t);
-			opt_len -= sizeof(u_int32_t);
-			opts_len -= sizeof(u_int32_t);
+			bp += sizeof(uint32_t);
+			opt_len -= sizeof(uint32_t);
+			opts_len -= sizeof(uint32_t);
 		    }
 		    break;
 
@@ -566,7 +524,7 @@ pgm_print(netdissect_options *ndo,
 		    }
 		    bp += 2;
 		    seq = EXTRACT_32BITS(bp);
-		    bp += sizeof(u_int32_t);
+		    bp += sizeof(uint32_t);
 		    ND_PRINT((ndo, " JOIN %u", seq));
 		    opts_len -= 8;
 		    break;
@@ -578,9 +536,9 @@ pgm_print(netdissect_options *ndo,
 		    }
 		    bp += 2;
 		    offset = EXTRACT_32BITS(bp);
-		    bp += sizeof(u_int32_t);
+		    bp += sizeof(uint32_t);
 		    seq = EXTRACT_32BITS(bp);
-		    bp += sizeof(u_int32_t);
+		    bp += sizeof(uint32_t);
 		    ND_PRINT((ndo, " BACKOFF ivl %u ivlseq %u", offset, seq));
 		    opts_len -= 12;
 		    break;
@@ -592,42 +550,44 @@ pgm_print(netdissect_options *ndo,
 		    }
 		    bp += 2;
 		    offset = EXTRACT_32BITS(bp);
-		    bp += sizeof(u_int32_t);
+		    bp += sizeof(uint32_t);
 		    seq = EXTRACT_32BITS(bp);
-		    bp += sizeof(u_int32_t);
+		    bp += sizeof(uint32_t);
 		    ND_PRINT((ndo, " BACKOFF max %u min %u", offset, seq));
 		    opts_len -= 12;
 		    break;
 
 		case PGM_OPT_REDIRECT:
 		    bp += 2;
-		    switch (EXTRACT_16BITS(bp)) {
+		    nla_afnum = EXTRACT_16BITS(bp);
+		    bp += (2 * sizeof(uint16_t));
+		    switch (nla_afnum) {
 		    case AFNUM_INET:
-			addr_size = sizeof(struct in_addr);
-			nla_af = AF_INET;
+			if (opt_len != 4 + sizeof(struct in_addr)) {
+			    ND_PRINT((ndo, "[Bad OPT_REDIRECT option, length %u != 4 + address size]", opt_len));
+			    return;
+			}
+			ND_TCHECK2(*bp, sizeof(struct in_addr));
+			addrtostr(bp, nla_buf, sizeof(nla_buf));
+			bp += sizeof(struct in_addr);
+			opts_len -= 4 + sizeof(struct in_addr);
 			break;
-#ifdef INET6
 		    case AFNUM_INET6:
-			addr_size = sizeof(struct in6_addr);
-			nla_af = AF_INET6;
+			if (opt_len != 4 + sizeof(struct in6_addr)) {
+			    ND_PRINT((ndo, "[Bad OPT_REDIRECT option, length %u != 4 + address size]", opt_len));
+			    return;
+			}
+			ND_TCHECK2(*bp, sizeof(struct in6_addr));
+			addrtostr6(bp, nla_buf, sizeof(nla_buf));
+			bp += sizeof(struct in6_addr);
+			opts_len -= 4 + sizeof(struct in6_addr);
 			break;
-#endif
 		    default:
 			goto trunc;
 			break;
 		    }
-		    bp += (2 * sizeof(u_int16_t));
-		    if (opt_len != 4 + addr_size) {
-			ND_PRINT((ndo, "[Bad OPT_REDIRECT option, length %u != 4 + address size]", opt_len));
-			return;
-		    }
-		    ND_TCHECK2(*bp, addr_size);
-		    nla = bp;
-		    bp += addr_size;
 
-		    inet_ntop(nla_af, nla, nla_buf, sizeof(nla_buf));
-		    ND_PRINT((ndo, " REDIRECT %s",  (char *)nla));
-		    opts_len -= 4 + addr_size;
+		    ND_PRINT((ndo, " REDIRECT %s",  nla_buf));
 		    break;
 
 		case PGM_OPT_PARITY_PRM:
@@ -637,7 +597,7 @@ pgm_print(netdissect_options *ndo,
 		    }
 		    bp += 2;
 		    len = EXTRACT_32BITS(bp);
-		    bp += sizeof(u_int32_t);
+		    bp += sizeof(uint32_t);
 		    ND_PRINT((ndo, " PARITY MAXTGS %u", len));
 		    opts_len -= 8;
 		    break;
@@ -649,7 +609,7 @@ pgm_print(netdissect_options *ndo,
 		    }
 		    bp += 2;
 		    seq = EXTRACT_32BITS(bp);
-		    bp += sizeof(u_int32_t);
+		    bp += sizeof(uint32_t);
 		    ND_PRINT((ndo, " PARITY GROUP %u", seq));
 		    opts_len -= 8;
 		    break;
@@ -661,7 +621,7 @@ pgm_print(netdissect_options *ndo,
 		    }
 		    bp += 2;
 		    len = EXTRACT_32BITS(bp);
-		    bp += sizeof(u_int32_t);
+		    bp += sizeof(uint32_t);
 		    ND_PRINT((ndo, " PARITY ATGS %u", len));
 		    opts_len -= 8;
 		    break;
@@ -731,67 +691,71 @@ pgm_print(netdissect_options *ndo,
 		case PGM_OPT_PGMCC_DATA:
 		    bp += 2;
 		    offset = EXTRACT_32BITS(bp);
-		    bp += sizeof(u_int32_t);
-		    switch (EXTRACT_16BITS(bp)) {
+		    bp += sizeof(uint32_t);
+		    nla_afnum = EXTRACT_16BITS(bp);
+		    bp += (2 * sizeof(uint16_t));
+		    switch (nla_afnum) {
 		    case AFNUM_INET:
-			addr_size = sizeof(struct in_addr);
-			nla_af = AF_INET;
+			if (opt_len != 12 + sizeof(struct in_addr)) {
+			    ND_PRINT((ndo, "[Bad OPT_PGMCC_DATA option, length %u != 12 + address size]", opt_len));
+			    return;
+			}
+			ND_TCHECK2(*bp, sizeof(struct in_addr));
+			addrtostr(bp, nla_buf, sizeof(nla_buf));
+			bp += sizeof(struct in_addr);
+			opts_len -= 12 + sizeof(struct in_addr);
 			break;
-#ifdef INET6
 		    case AFNUM_INET6:
-			addr_size = sizeof(struct in6_addr);
-			nla_af = AF_INET6;
+			if (opt_len != 12 + sizeof(struct in6_addr)) {
+			    ND_PRINT((ndo, "[Bad OPT_PGMCC_DATA option, length %u != 12 + address size]", opt_len));
+			    return;
+			}
+			ND_TCHECK2(*bp, sizeof(struct in6_addr));
+			addrtostr6(bp, nla_buf, sizeof(nla_buf));
+			bp += sizeof(struct in6_addr);
+			opts_len -= 12 + sizeof(struct in6_addr);
 			break;
-#endif
 		    default:
 			goto trunc;
 			break;
 		    }
-		    bp += (2 * sizeof(u_int16_t));
-		    if (opt_len != 12 + addr_size) {
-			ND_PRINT((ndo, "[Bad OPT_PGMCC_DATA option, length %u != 12 + address size]", opt_len));
-			return;
-		    }
-		    ND_TCHECK2(*bp, addr_size);
-		    nla = bp;
-		    bp += addr_size;
 
-		    inet_ntop(nla_af, nla, nla_buf, sizeof(nla_buf));
-		    ND_PRINT((ndo, " PGMCC DATA %u %s", offset, (char*)nla));
-		    opts_len -= 16;
+		    ND_PRINT((ndo, " PGMCC DATA %u %s", offset, nla_buf));
 		    break;
 
 		case PGM_OPT_PGMCC_FEEDBACK:
 		    bp += 2;
 		    offset = EXTRACT_32BITS(bp);
-		    bp += sizeof(u_int32_t);
-		    switch (EXTRACT_16BITS(bp)) {
+		    bp += sizeof(uint32_t);
+		    nla_afnum = EXTRACT_16BITS(bp);
+		    bp += (2 * sizeof(uint16_t));
+		    switch (nla_afnum) {
 		    case AFNUM_INET:
-			addr_size = sizeof(struct in_addr);
-			nla_af = AF_INET;
+			if (opt_len != 12 + sizeof(struct in_addr)) {
+			    ND_PRINT((ndo, "[Bad OPT_PGMCC_DATA option, length %u != 12 + address size]", opt_len));
+			    return;
+			}
+			ND_TCHECK2(*bp, sizeof(struct in_addr));
+			addrtostr(bp, nla_buf, sizeof(nla_buf));
+			bp += sizeof(struct in_addr);
+			opts_len -= 12 + sizeof(struct in_addr);
 			break;
-#ifdef INET6
 		    case AFNUM_INET6:
-			addr_size = sizeof(struct in6_addr);
-			nla_af = AF_INET6;
+			if (opt_len != 12 + sizeof(struct in6_addr)) {
+			    ND_PRINT((ndo, "[Bad OPT_PGMCC_DATA option, length %u != 12 + address size]", opt_len));
+			    return;
+			}
+			ND_TCHECK2(*bp, sizeof(struct in6_addr));
+			addrtostr6(bp, nla_buf, sizeof(nla_buf));
+			bp += sizeof(struct in6_addr);
+			opts_len -= 12 + sizeof(struct in6_addr);
 			break;
-#endif
 		    default:
 			goto trunc;
 			break;
 		    }
-		    bp += (2 * sizeof(u_int16_t));
-		    if (opt_len != 12 + addr_size) {
-			ND_PRINT((ndo, "[Bad OPT_PGMCC_FEEDBACK option, length %u != 12 + address size]", opt_len));
-			return;
-		    }
-		    ND_TCHECK2(*bp, addr_size);
-		    nla = bp;
-		    bp += addr_size;
 
-		    inet_ntop(nla_af, nla, nla_buf, sizeof(nla_buf));
-		    ND_PRINT((ndo, " PGMCC FEEDBACK %u %s", offset, (char*)nla));
-		    opts_len -= 16;
+		    ND_PRINT((ndo, " PGMCC FEEDBACK %u %s", offset, nla_buf));
 		    break;
 
 		default: