X-Git-Url: https://git.tcpdump.org/tcpdump/blobdiff_plain/8fb4d4db58eae5d8d4c57a6209d4aab93cbf9154..a63600a1fc28dbc7ae7ce9f996829c49a25fb33c:/print-lwres.c diff --git a/print-lwres.c b/print-lwres.c index 04aa7742..b8f9b49a 100644 --- a/print-lwres.c +++ b/print-lwres.c @@ -27,50 +27,37 @@ * SUCH DAMAGE. */ -#ifndef lint -static const char rcsid[] = - "@(#) $Header: /tcpdump/master/tcpdump/print-lwres.c,v 1.3 2001-02-02 19:13:42 itojun Exp $ (LBL)"; -#endif +/* \summary: BIND9 Lightweight Resolver protocol printer */ #ifdef HAVE_CONFIG_H -#include "config.h" +#include #endif -#include -#include +#include "netdissect-stdinc.h" -#include +#define ND_LONGJMP_FROM_TCHECK +#include "netdissect.h" +#include "addrtoname.h" +#include "extract.h" -#ifdef NOERROR -#undef NOERROR /* Solaris sucks */ -#endif -#ifdef NOERROR -#undef T_UNSPEC /* SINIX does too */ -#endif #include "nameser.h" -#include -#include - -#include "interface.h" -#include "addrtoname.h" -#include "extract.h" /* must come after interface.h */ - /* BIND9 lib/lwres/include/lwres */ -typedef u_int32_t lwres_uint32_t; -typedef u_int16_t lwres_uint16_t; -typedef u_int8_t lwres_uint8_t; +/* + * Use nd_uint16_t for lwres_uint16_t + * Use nd_uint32_t for lwres_uint32_t +*/ struct lwres_lwpacket { - lwres_uint32_t length; - lwres_uint16_t version; - lwres_uint16_t pktflags; - lwres_uint32_t serial; - lwres_uint32_t opcode; - lwres_uint32_t result; - lwres_uint32_t recvlength; - lwres_uint16_t authtype; - lwres_uint16_t authlength; + nd_uint32_t length; + nd_uint16_t version; + nd_uint16_t pktflags; + nd_uint32_t serial; + nd_uint32_t opcode; + nd_uint32_t result; + nd_uint32_t recvlength; + nd_uint16_t authtype; + nd_uint16_t authlength; }; #define LWRES_LWPACKETFLAG_RESPONSE 0x0001U /* if set, pkt is a response */ @@ -87,13 +74,13 @@ struct lwres_lwpacket { typedef struct { /* public */ - lwres_uint16_t datalength; + nd_uint16_t datalength; /* data follows */ } lwres_nooprequest_t; typedef struct { /* public */ - lwres_uint16_t datalength; + nd_uint16_t datalength; /* data follows */ } lwres_noopresponse_t; @@ -105,29 +92,32 @@ typedef struct { typedef struct lwres_addr lwres_addr_t; struct lwres_addr { - lwres_uint32_t family; - lwres_uint16_t length; - /* address folows */ + nd_uint32_t family; + nd_uint16_t length; + /* address follows */ }; +#define LWRES_ADDR_LEN 6 typedef struct { /* public */ - lwres_uint32_t flags; - lwres_uint32_t addrtypes; - lwres_uint16_t namelen; + nd_uint32_t flags; + nd_uint32_t addrtypes; + nd_uint16_t namelen; /* name follows */ } lwres_gabnrequest_t; +#define LWRES_GABNREQUEST_LEN 10 typedef struct { /* public */ - lwres_uint32_t flags; - lwres_uint16_t naliases; - lwres_uint16_t naddrs; - lwres_uint16_t realnamelen; + nd_uint32_t flags; + nd_uint16_t naliases; + nd_uint16_t naddrs; + nd_uint16_t realnamelen; /* aliases follows */ /* addrs follows */ /* realname follows */ } lwres_gabnresponse_t; +#define LWRES_GABNRESPONSE_LEN 10 /* * get name by address @@ -135,19 +125,20 @@ typedef struct { #define LWRES_OPCODE_GETNAMEBYADDR 0x00010002U typedef struct { /* public */ - lwres_uint32_t flags; - lwres_addr_t addr; - /* addr body follows */ + nd_uint32_t flags; + /* addr follows */ } lwres_gnbarequest_t; +#define LWRES_GNBAREQUEST_LEN 4 typedef struct { /* public */ - lwres_uint32_t flags; - lwres_uint16_t naliases; - lwres_uint16_t realnamelen; + nd_uint32_t flags; + nd_uint16_t naliases; + nd_uint16_t realnamelen; /* aliases follows */ /* realname follows */ } lwres_gnbaresponse_t; +#define LWRES_GNBARESPONSE_LEN 8 /* * get rdata by name @@ -156,25 +147,27 @@ typedef struct { typedef struct { /* public */ - lwres_uint32_t flags; - lwres_uint16_t rdclass; - lwres_uint16_t rdtype; - lwres_uint16_t namelen; + nd_uint32_t flags; + nd_uint16_t rdclass; + nd_uint16_t rdtype; + nd_uint16_t namelen; /* name follows */ } lwres_grbnrequest_t; +#define LWRES_GRBNREQUEST_LEN 10 typedef struct { /* public */ - lwres_uint32_t flags; - lwres_uint16_t rdclass; - lwres_uint16_t rdtype; - lwres_uint32_t ttl; - lwres_uint16_t nrdatas; - lwres_uint16_t nsigs; + nd_uint32_t flags; + nd_uint16_t rdclass; + nd_uint16_t rdtype; + nd_uint32_t ttl; + nd_uint16_t nrdatas; + nd_uint16_t nsigs; /* realname here (len + name) */ /* rdata here (len + name) */ /* signatures here (len + name) */ } lwres_grbnresponse_t; +#define LWRES_GRBNRESPONSE_LEN 16 #define LWRDATA_VALIDATED 0x00000001 @@ -184,169 +177,149 @@ typedef struct { #define LWRES_MAX_ALIASES 16 /* max # of aliases */ #define LWRES_MAX_ADDRS 64 /* max # of addrs */ -struct tok opcode[] = { +static const struct tok opcode[] = { { LWRES_OPCODE_NOOP, "noop", }, { LWRES_OPCODE_GETADDRSBYNAME, "getaddrsbyname", }, { LWRES_OPCODE_GETNAMEBYADDR, "getnamebyaddr", }, { LWRES_OPCODE_GETRDATABYNAME, "getrdatabyname", }, - { 0, NULL, }, + { 0, NULL, }, }; /* print-domain.c */ -extern struct tok ns_type2str[]; -extern struct tok ns_class2str[]; - -static int lwres_printname(size_t, const char *); -static int lwres_printnamelen(const char *); -static int lwres_printbinlen(const char *); -static int lwres_printaddr(lwres_addr_t *); +extern const struct tok ns_type2str[]; +extern const struct tok ns_class2str[]; -static int -lwres_printname(size_t l, const char *p0) +static unsigned +lwres_printname(netdissect_options *ndo, + u_int l, const u_char *p0) { - const char *p; - int i; - - p = p0; - /* + 1 for terminating \0 */ - if (p + l + 1 > (const char *)snapend) - goto trunc; - - printf(" "); - for (i = 0; i < l; i++) - safeputchar(*p++); - p++; /* skip terminating \0 */ - - return p - p0; - - trunc: - return -1; + ND_PRINT(" "); + nd_printjn(ndo, p0, l); + p0 += l; + if (GET_U_1(p0)) + ND_PRINT(" (not NUL-terminated!)"); + return l + 1; } -static int -lwres_printnamelen(const char *p) +static unsigned +lwres_printnamelen(netdissect_options *ndo, + const u_char *p) { - u_int16_t l; + uint16_t l; int advance; - if (p + 2 > (const char *)snapend) - goto trunc; - l = EXTRACT_16BITS(p); - advance = lwres_printname(l, p + 2); - if (advance < 0) - goto trunc; + l = GET_BE_U_2(p); + advance = lwres_printname(ndo, l, p + 2); return 2 + advance; - - trunc: - return -1; } -static int -lwres_printbinlen(const char *p0) +static unsigned +lwres_printbinlen(netdissect_options *ndo, + const u_char *p0) { - const char *p; - u_int16_t l; + const u_char *p; + uint16_t l; int i; p = p0; - if (p + 2 > (const char *)snapend) - goto trunc; - l = EXTRACT_16BITS(p); - if (p + 2 + l > (const char *)snapend) - goto trunc; + l = GET_BE_U_2(p); p += 2; - for (i = 0; i < l; i++) - printf("%02x", *p++); - return p - p0; - - trunc: - return -1; + for (i = 0; i < l; i++) { + ND_PRINT("%02x", GET_U_1(p)); + p++; + } + return 2 + l; } static int -lwres_printaddr(lwres_addr_t *ap) +lwres_printaddr(netdissect_options *ndo, + const u_char *p0) { - u_int16_t l; - const char *p; + const u_char *p; + const lwres_addr_t *ap; + uint16_t l; int i; - TCHECK(ap->length); - l = ntohs(ap->length); - /* XXX ap points to packed struct */ - p = (const char *)&ap->length + sizeof(ap->length); - if (p + l > (const char *)snapend) - goto trunc; + p = p0; + ap = (const lwres_addr_t *)p; + l = GET_BE_U_2(ap->length); + p += LWRES_ADDR_LEN; + ND_TCHECK_LEN(p, l); - switch (ntohl(ap->family)) { + switch (GET_BE_U_4(ap->family)) { case 1: /* IPv4 */ - printf(" %s", ipaddr_string(p)); - p += sizeof(struct in_addr); + if (l < 4) + return -1; + ND_PRINT(" %s", GET_IPADDR_STRING(p)); + p += sizeof(nd_ipv4); break; -#ifdef INET6 case 2: /* IPv6 */ - printf(" %s", ip6addr_string(p)); - p += sizeof(struct in6_addr); + if (l < 16) + return -1; + ND_PRINT(" %s", GET_IP6ADDR_STRING(p)); + p += sizeof(nd_ipv6); break; -#endif default: - printf(" %lu/", (unsigned long)ntohl(ap->family)); - for (i = 0; i < l; i++) - printf("%02x", *p++); + ND_PRINT(" %u/", GET_BE_U_4(ap->family)); + for (i = 0; i < l; i++) { + ND_PRINT("%02x", GET_U_1(p)); + p++; + } } - return p - (const char *)ap; - - trunc: - return -1; + return ND_BYTES_BETWEEN(p, p0); } void -lwres_print(register const u_char *bp, u_int length) +lwres_print(netdissect_options *ndo, + const u_char *bp, u_int length) { + const u_char *p; const struct lwres_lwpacket *np; - u_int32_t v; - const char *s; + uint32_t v; + const u_char *s; int response; int advance; - int unsupported; + int unsupported = 0; + ndo->ndo_protocol = "lwres"; np = (const struct lwres_lwpacket *)bp; - TCHECK(np->authlength); + ND_TCHECK_2(np->authlength); - printf(" lwres"); - v = ntohs(np->version); - if (vflag || v != LWRES_LWPACKETVERSION_0) - printf(" v%u", v); + ND_PRINT(" lwres"); + v = GET_BE_U_2(np->version); + if (ndo->ndo_vflag || v != LWRES_LWPACKETVERSION_0) + ND_PRINT(" v%u", v); if (v != LWRES_LWPACKETVERSION_0) { - s = (const char *)np + ntohl(np->length); + uint32_t pkt_len = GET_BE_U_4(np->length); + ND_TCHECK_LEN(bp, pkt_len); + s = bp + pkt_len; goto tail; } - response = ntohs(np->pktflags) & LWRES_LWPACKETFLAG_RESPONSE; - unsupported = 0; + response = GET_BE_U_2(np->pktflags) & LWRES_LWPACKETFLAG_RESPONSE; /* opcode and pktflags */ - v = (u_int32_t)ntohl(np->opcode); - s = tok2str(opcode, "#0x%x", v); - printf(" %s%s", s, response ? "" : "?"); + v = GET_BE_U_4(np->opcode); + ND_PRINT(" %s%s", tok2str(opcode, "#0x%x", v), response ? "" : "?"); /* pktflags */ - v = ntohs(np->pktflags); + v = GET_BE_U_2(np->pktflags); if (v & ~LWRES_LWPACKETFLAG_RESPONSE) - printf("[0x%x]", v); + ND_PRINT("[0x%x]", v); - if (vflag > 1) { - printf(" ("); /*)*/ - printf("serial:0x%lx", (unsigned long)ntohl(np->serial)); - printf(" result:0x%lx", (unsigned long)ntohl(np->result)); - printf(" recvlen:%lu", (unsigned long)ntohl(np->recvlength)); + if (ndo->ndo_vflag > 1) { + ND_PRINT(" ("); /*)*/ + ND_PRINT("serial:0x%x", GET_BE_U_4(np->serial)); + ND_PRINT(" result:0x%x", GET_BE_U_4(np->result)); + ND_PRINT(" recvlen:%u", GET_BE_U_4(np->recvlength)); /* BIND910: not used */ - if (vflag > 2) { - printf(" authtype:0x%x", ntohs(np->authtype)); - printf(" authlen:%u", ntohs(np->authlength)); + if (ndo->ndo_vflag > 2) { + ND_PRINT(" authtype:0x%x", GET_BE_U_2(np->authtype)); + ND_PRINT(" authlen:%u", GET_BE_U_2(np->authlength)); } /*(*/ - printf(")"); + ND_PRINT(")"); } /* per-opcode content */ @@ -354,97 +327,91 @@ lwres_print(register const u_char *bp, u_int length) /* * queries */ - lwres_gabnrequest_t *gabn; - lwres_gnbarequest_t *gnba; - lwres_grbnrequest_t *grbn; - u_int32_t l; + const lwres_gabnrequest_t *gabn; + const lwres_gnbarequest_t *gnba; + const lwres_grbnrequest_t *grbn; + uint32_t l; gabn = NULL; gnba = NULL; grbn = NULL; - switch (ntohl(np->opcode)) { + p = (const u_char *)(np + 1); + switch (GET_BE_U_4(np->opcode)) { case LWRES_OPCODE_NOOP: + s = p; break; case LWRES_OPCODE_GETADDRSBYNAME: - gabn = (lwres_gabnrequest_t *)(np + 1); - TCHECK(gabn->namelen); - /* XXX gabn points to packed struct */ - s = (const char *)&gabn->namelen + - sizeof(gabn->namelen); - l = ntohs(gabn->namelen); + gabn = (const lwres_gabnrequest_t *)p; + ND_TCHECK_2(gabn->namelen); /* BIND910: not used */ - if (vflag > 2) { - printf(" flags:0x%lx", - (unsigned long)ntohl(gabn->flags)); + if (ndo->ndo_vflag > 2) { + ND_PRINT(" flags:0x%x", + GET_BE_U_4(gabn->flags)); } - v = (u_int32_t)ntohl(gabn->addrtypes); + v = GET_BE_U_4(gabn->addrtypes); switch (v & (LWRES_ADDRTYPE_V4 | LWRES_ADDRTYPE_V6)) { case LWRES_ADDRTYPE_V4: - printf(" IPv4"); + ND_PRINT(" IPv4"); break; case LWRES_ADDRTYPE_V6: - printf(" IPv6"); + ND_PRINT(" IPv6"); break; case LWRES_ADDRTYPE_V4 | LWRES_ADDRTYPE_V6: - printf(" IPv4/6"); + ND_PRINT(" IPv4/6"); break; } if (v & ~(LWRES_ADDRTYPE_V4 | LWRES_ADDRTYPE_V6)) - printf("[0x%x]", v); + ND_PRINT("[0x%x]", v); - advance = lwres_printname(l, s); - if (advance < 0) - goto trunc; + s = p + LWRES_GABNREQUEST_LEN; + l = GET_BE_U_2(gabn->namelen); + advance = lwres_printname(ndo, l, s); s += advance; break; case LWRES_OPCODE_GETNAMEBYADDR: - gnba = (lwres_gnbarequest_t *)(np + 1); - TCHECK(gnba->addr); + gnba = (const lwres_gnbarequest_t *)p; + ND_TCHECK_4(gnba->flags); /* BIND910: not used */ - if (vflag > 2) { - printf(" flags:0x%lx", - (unsigned long)ntohl(gnba->flags)); + if (ndo->ndo_vflag > 2) { + ND_PRINT(" flags:0x%x", + GET_BE_U_4(gnba->flags)); } - s = (const char *)&gnba->addr; - - advance = lwres_printaddr(&gnba->addr); + s = p + LWRES_GNBAREQUEST_LEN; + advance = lwres_printaddr(ndo, s); if (advance < 0) - goto trunc; + goto invalid; s += advance; break; case LWRES_OPCODE_GETRDATABYNAME: /* XXX no trace, not tested */ - grbn = (lwres_grbnrequest_t *)(np + 1); - TCHECK(grbn->namelen); + grbn = (const lwres_grbnrequest_t *)p; + ND_TCHECK_2(grbn->namelen); /* BIND910: not used */ - if (vflag > 2) { - printf(" flags:0x%lx", - (unsigned long)ntohl(grbn->flags)); + if (ndo->ndo_vflag > 2) { + ND_PRINT(" flags:0x%x", + GET_BE_U_4(grbn->flags)); } - printf(" %s", tok2str(ns_type2str, "Type%d", - ntohs(grbn->rdtype))); - if (ntohs(grbn->rdclass) != C_IN); - printf(" %s", tok2str(ns_class2str, "Class%d", - ntohs(grbn->rdclass))); - - /* XXX grbn points to packed struct */ - s = (const char *)&grbn->namelen + - sizeof(grbn->namelen); - l = ntohs(gabn->namelen); + ND_PRINT(" %s", tok2str(ns_type2str, "Type%u", + GET_BE_U_2(grbn->rdtype))); + if (GET_BE_U_2(grbn->rdclass) != C_IN) { + ND_PRINT(" %s", tok2str(ns_class2str, "Class%u", + GET_BE_U_2(grbn->rdclass))); + } - advance = lwres_printname(l, s); - if (advance < 0) - goto trunc; + s = p + LWRES_GRBNREQUEST_LEN; + l = GET_BE_U_2(grbn->namelen); + advance = lwres_printname(ndo, l, s); s += advance; break; default: + s = p; unsupported++; break; } @@ -452,139 +419,124 @@ lwres_print(register const u_char *bp, u_int length) /* * responses */ - lwres_gabnresponse_t *gabn; - lwres_gnbaresponse_t *gnba; - lwres_grbnresponse_t *grbn; - u_int32_t l, na; - int i; + const lwres_gabnresponse_t *gabn; + const lwres_gnbaresponse_t *gnba; + const lwres_grbnresponse_t *grbn; + uint32_t l, na; + uint32_t i; gabn = NULL; gnba = NULL; grbn = NULL; - switch (ntohl(np->opcode)) { + p = (const u_char *)(np + 1); + switch (GET_BE_U_4(np->opcode)) { case LWRES_OPCODE_NOOP: + s = p; break; case LWRES_OPCODE_GETADDRSBYNAME: - gabn = (lwres_gabnresponse_t *)(np + 1); - TCHECK(gabn->realnamelen); - /* XXX gabn points to packed struct */ - s = (const char *)&gabn->realnamelen + - sizeof(gabn->realnamelen); - l = ntohs(gabn->realnamelen); + gabn = (const lwres_gabnresponse_t *)p; + ND_TCHECK_2(gabn->realnamelen); /* BIND910: not used */ - if (vflag > 2) { - printf(" flags:0x%lx", - (unsigned long)ntohl(gabn->flags)); + if (ndo->ndo_vflag > 2) { + ND_PRINT(" flags:0x%x", + GET_BE_U_4(gabn->flags)); } - printf(" %u/%u", ntohs(gabn->naliases), - ntohs(gabn->naddrs)); + ND_PRINT(" %u/%u", GET_BE_U_2(gabn->naliases), + GET_BE_U_2(gabn->naddrs)); - advance = lwres_printname(l, s); - if (advance < 0) - goto trunc; + s = p + LWRES_GABNRESPONSE_LEN; + l = GET_BE_U_2(gabn->realnamelen); + advance = lwres_printname(ndo, l, s); s += advance; /* aliases */ - na = ntohs(gabn->naliases); + na = GET_BE_U_2(gabn->naliases); for (i = 0; i < na; i++) { - advance = lwres_printnamelen(s); - if (advance < 0) - goto trunc; + advance = lwres_printnamelen(ndo, s); s += advance; } /* addrs */ - na = ntohs(gabn->naddrs); + na = GET_BE_U_2(gabn->naddrs); for (i = 0; i < na; i++) { - advance = lwres_printaddr((lwres_addr_t *)s); + advance = lwres_printaddr(ndo, s); if (advance < 0) - goto trunc; + goto invalid; s += advance; } break; case LWRES_OPCODE_GETNAMEBYADDR: - gnba = (lwres_gnbaresponse_t *)(np + 1); - TCHECK(gnba->realnamelen); - /* XXX gnba points to packed struct */ - s = (const char *)&gnba->realnamelen + - sizeof(gnba->realnamelen); - l = ntohs(gnba->realnamelen); + gnba = (const lwres_gnbaresponse_t *)p; + ND_TCHECK_2(gnba->realnamelen); /* BIND910: not used */ - if (vflag > 2) { - printf(" flags:0x%lx", - (unsigned long)ntohl(gnba->flags)); + if (ndo->ndo_vflag > 2) { + ND_PRINT(" flags:0x%x", + GET_BE_U_4(gnba->flags)); } - printf(" %u", ntohs(gnba->naliases)); + ND_PRINT(" %u", GET_BE_U_2(gnba->naliases)); - advance = lwres_printname(l, s); - if (advance < 0) - goto trunc; + s = p + LWRES_GNBARESPONSE_LEN; + l = GET_BE_U_2(gnba->realnamelen); + advance = lwres_printname(ndo, l, s); s += advance; /* aliases */ - na = ntohs(gnba->naliases); + na = GET_BE_U_2(gnba->naliases); for (i = 0; i < na; i++) { - advance = lwres_printnamelen(s); - if (advance < 0) - goto trunc; + advance = lwres_printnamelen(ndo, s); s += advance; } break; case LWRES_OPCODE_GETRDATABYNAME: /* XXX no trace, not tested */ - grbn = (lwres_grbnresponse_t *)(np + 1); - TCHECK(grbn->nsigs); + grbn = (const lwres_grbnresponse_t *)p; + ND_TCHECK_2(grbn->nsigs); /* BIND910: not used */ - if (vflag > 2) { - printf(" flags:0x%lx", - (unsigned long)ntohl(grbn->flags)); + if (ndo->ndo_vflag > 2) { + ND_PRINT(" flags:0x%x", + GET_BE_U_4(grbn->flags)); } - printf(" %s", tok2str(ns_type2str, "Type%d", - ntohs(grbn->rdtype))); - if (ntohs(grbn->rdclass) != C_IN); - printf(" %s", tok2str(ns_class2str, "Class%d", - ntohs(grbn->rdclass))); - printf(" TTL "); - relts_print(ntohl(grbn->ttl)); - printf(" %u/%u", ntohs(grbn->nrdatas), - ntohs(grbn->nsigs)); - - /* XXX grbn points to packed struct */ - s = (const char *)&grbn->nsigs+ sizeof(grbn->nsigs); - - advance = lwres_printnamelen(s); - if (advance < 0) - goto trunc; + ND_PRINT(" %s", tok2str(ns_type2str, "Type%u", + GET_BE_U_2(grbn->rdtype))); + if (GET_BE_U_2(grbn->rdclass) != C_IN) { + ND_PRINT(" %s", tok2str(ns_class2str, "Class%u", + GET_BE_U_2(grbn->rdclass))); + } + ND_PRINT(" TTL "); + unsigned_relts_print(ndo, + GET_BE_U_4(grbn->ttl)); + ND_PRINT(" %u/%u", GET_BE_U_2(grbn->nrdatas), + GET_BE_U_2(grbn->nsigs)); + + s = p + LWRES_GRBNRESPONSE_LEN; + advance = lwres_printnamelen(ndo, s); s += advance; /* rdatas */ - na = ntohs(grbn->nrdatas); + na = GET_BE_U_2(grbn->nrdatas); for (i = 0; i < na; i++) { /* XXX should decode resource data */ - advance = lwres_printbinlen(s); - if (advance < 0) - goto trunc; + advance = lwres_printbinlen(ndo, s); s += advance; } /* sigs */ - na = ntohs(grbn->nsigs); + na = GET_BE_U_2(grbn->nsigs); for (i = 0; i < na; i++) { /* XXX how should we print it? */ - advance = lwres_printbinlen(s); - if (advance < 0) - goto trunc; + advance = lwres_printbinlen(ndo, s); s += advance; } break; default: + s = p; unsupported++; break; } @@ -592,15 +544,14 @@ lwres_print(register const u_char *bp, u_int length) tail: /* length mismatch */ - if (ntohl(np->length) != length) { - printf(" [len: %lu != %u]", (unsigned long)ntohl(np->length), - length); + if (GET_BE_U_4(np->length) != length) { + ND_PRINT(" [len: %u != %u]", GET_BE_U_4(np->length), + length); } - if (!unsupported && s < (const char *)np + ntohl(np->length)) - printf("[extra]"); + if (!unsupported && ND_BYTES_BETWEEN(s, bp) < GET_BE_U_4(np->length)) + ND_PRINT("[extra]"); return; - trunc: - printf("[|lwres]"); - return; + invalid: + nd_print_invalid(ndo); }