/* \summary: Domain Name System (DNS) printer */
#ifdef HAVE_CONFIG_H
-#include "config.h"
+#include <config.h>
#endif
-#include <netdissect-stdinc.h>
+#include "netdissect-stdinc.h"
#include <string.h>
blabel_print(netdissect_options *ndo,
const u_char *cp)
{
- int bitlen, slen, b;
+ u_int bitlen, slen, b;
const u_char *bitp, *lim;
- char tc;
+ uint8_t tc;
if (!ND_TTEST_1(cp))
return(NULL);
lim = cp + 1 + slen;
/* print the bit string as a hex string */
- ND_PRINT((ndo, "\\[x"));
+ ND_PRINT("\\[x");
for (bitp = cp + 1, b = bitlen; bitp < lim && b > 7; b -= 8, bitp++) {
ND_TCHECK_1(bitp);
- ND_PRINT((ndo, "%02x", EXTRACT_U_1(bitp)));
+ ND_PRINT("%02x", EXTRACT_U_1(bitp));
}
if (b > 4) {
ND_TCHECK_1(bitp);
tc = EXTRACT_U_1(bitp);
bitp++;
- ND_PRINT((ndo, "%02x", tc & (0xff << (8 - b))));
+ ND_PRINT("%02x", tc & (0xff << (8 - b)));
} else if (b > 0) {
ND_TCHECK_1(bitp);
tc = EXTRACT_U_1(bitp);
bitp++;
- ND_PRINT((ndo, "%1x", ((tc >> 4) & 0x0f) & (0x0f << (4 - b))));
+ ND_PRINT("%1x", ((tc >> 4) & 0x0f) & (0x0f << (4 - b)));
}
- ND_PRINT((ndo, "/%d]", bitlen));
+ ND_PRINT("/%u]", bitlen);
return lim;
trunc:
- ND_PRINT((ndo, ".../%d]", bitlen));
+ ND_PRINT(".../%u]", bitlen);
return NULL;
}
return(-1);
i = EXTRACT_U_1(cp);
if ((i & INDIR_MASK) == EDNS0_MASK) {
- int bitlen, elt;
+ u_int bitlen, elt;
if ((elt = (i & ~INDIR_MASK)) != EDNS0_ELT_BITLABEL) {
- ND_PRINT((ndo, "<ELT %d>", elt));
+ ND_PRINT("<ELT %d>", elt);
return(-1);
}
if (!ND_TTEST_1(cp + 1))
u_int i, l;
const u_char *rp = NULL;
int compress = 0;
- int elt;
+ u_int elt;
u_int offset, max_offset;
if ((l = labellen(ndo, cp)) == (u_int)-1)
* the packet).
*/
if (offset >= max_offset) {
- ND_PRINT((ndo, "<BAD PTR>"));
+ ND_PRINT("<BAD PTR>");
return(NULL);
}
max_offset = offset;
break;
default:
/* unknown ELT */
- ND_PRINT((ndo, "<ELT %d>", elt));
+ ND_PRINT("<ELT %u>", elt);
return(NULL);
}
} else {
- if (fn_printn(ndo, cp, l, ndo->ndo_snapend))
+ if (nd_printn(ndo, cp, l, ndo->ndo_snapend))
return(NULL);
}
cp += l;
- ND_PRINT((ndo, "."));
+ ND_PRINT(".");
if ((l = labellen(ndo, cp)) == (u_int)-1)
return(NULL);
if (!ND_TTEST_1(cp))
rp += l + 1;
}
else
- ND_PRINT((ndo, "."));
+ ND_PRINT(".");
return (rp);
}
return (NULL);
i = EXTRACT_U_1(cp);
cp++;
- if (fn_printn(ndo, cp, i, ndo->ndo_snapend))
+ if (nd_printn(ndo, cp, i, ndo->ndo_snapend))
return (NULL);
return (cp + i);
}
+extern const struct tok ns_type2str[];
+
/* http://www.iana.org/assignments/dns-parameters */
const struct tok ns_type2str[] = {
{ T_A, "A" }, /* RFC 1035 */
{ 0, NULL }
};
+extern const struct tok ns_class2str[];
+
const struct tok ns_class2str[] = {
{ C_IN, "IN" }, /* Not used */
{ C_CHAOS, "CHAOS" },
/* print the qtype */
i = EXTRACT_BE_U_2(cp);
cp += 2;
- ND_PRINT((ndo, " %s", tok2str(ns_type2str, "Type%d", i)));
+ ND_PRINT(" %s", tok2str(ns_type2str, "Type%u", i));
/* print the qclass (if it's not IN) */
i = EXTRACT_BE_U_2(cp);
cp += 2;
else
class = i;
if (class != C_IN)
- ND_PRINT((ndo, " %s", tok2str(ns_class2str, "(Class %d)", class)));
+ ND_PRINT(" %s", tok2str(ns_class2str, "(Class %u)", class));
if (is_mdns) {
- ND_PRINT((ndo, i & C_QU ? " (QU)" : " (QM)"));
+ ND_PRINT(i & C_QU ? " (QU)" : " (QM)");
}
- ND_PRINT((ndo, "? "));
+ ND_PRINT("? ");
cp = ns_nprint(ndo, np, bp);
return(cp ? cp + 4 : NULL);
}
const u_char *rp;
if (ndo->ndo_vflag) {
- ND_PRINT((ndo, " "));
+ ND_PRINT(" ");
if ((cp = ns_nprint(ndo, cp, bp)) == NULL)
return NULL;
} else
else
class = i;
if (class != C_IN && typ != T_OPT)
- ND_PRINT((ndo, " %s", tok2str(ns_class2str, "(Class %d)", class)));
+ ND_PRINT(" %s", tok2str(ns_class2str, "(Class %u)", class));
if (is_mdns) {
if (i & C_CACHE_FLUSH)
- ND_PRINT((ndo, " (Cache flush)"));
+ ND_PRINT(" (Cache flush)");
}
if (typ == T_OPT) {
cp += 2;
} else if (ndo->ndo_vflag > 2) {
/* print ttl */
- ND_PRINT((ndo, " ["));
+ ND_PRINT(" [");
unsigned_relts_print(ndo, EXTRACT_BE_U_4(cp));
- ND_PRINT((ndo, "]"));
+ ND_PRINT("]");
cp += 4;
} else {
/* ignore ttl */
rp = cp + len;
- ND_PRINT((ndo, " %s", tok2str(ns_type2str, "Type%d", typ)));
+ ND_PRINT(" %s", tok2str(ns_type2str, "Type%u", typ));
if (rp > ndo->ndo_snapend)
return(NULL);
switch (typ) {
case T_A:
- if (!ND_TTEST_LEN(cp, sizeof(struct in_addr)))
+ if (!ND_TTEST_LEN(cp, sizeof(nd_ipv4)))
return(NULL);
- ND_PRINT((ndo, " %s", intoa(htonl(EXTRACT_BE_U_4(cp)))));
+ ND_PRINT(" %s", intoa(EXTRACT_IPV4_TO_NETWORK_ORDER(cp)));
break;
case T_NS:
#ifdef T_DNAME
case T_DNAME:
#endif
- ND_PRINT((ndo, " "));
+ ND_PRINT(" ");
if (ns_nprint(ndo, cp, bp) == NULL)
return(NULL);
break;
case T_SOA:
if (!ndo->ndo_vflag)
break;
- ND_PRINT((ndo, " "));
+ ND_PRINT(" ");
if ((cp = ns_nprint(ndo, cp, bp)) == NULL)
return(NULL);
- ND_PRINT((ndo, " "));
+ ND_PRINT(" ");
if ((cp = ns_nprint(ndo, cp, bp)) == NULL)
return(NULL);
if (!ND_TTEST_LEN(cp, 5 * 4))
return(NULL);
- ND_PRINT((ndo, " %u", EXTRACT_BE_U_4(cp)));
+ ND_PRINT(" %u", EXTRACT_BE_U_4(cp));
cp += 4;
- ND_PRINT((ndo, " %u", EXTRACT_BE_U_4(cp)));
+ ND_PRINT(" %u", EXTRACT_BE_U_4(cp));
cp += 4;
- ND_PRINT((ndo, " %u", EXTRACT_BE_U_4(cp)));
+ ND_PRINT(" %u", EXTRACT_BE_U_4(cp));
cp += 4;
- ND_PRINT((ndo, " %u", EXTRACT_BE_U_4(cp)));
+ ND_PRINT(" %u", EXTRACT_BE_U_4(cp));
cp += 4;
- ND_PRINT((ndo, " %u", EXTRACT_BE_U_4(cp)));
+ ND_PRINT(" %u", EXTRACT_BE_U_4(cp));
cp += 4;
break;
case T_MX:
- ND_PRINT((ndo, " "));
+ ND_PRINT(" ");
if (!ND_TTEST_2(cp))
return(NULL);
if (ns_nprint(ndo, cp + 2, bp) == NULL)
return(NULL);
- ND_PRINT((ndo, " %d", EXTRACT_BE_U_2(cp)));
+ ND_PRINT(" %u", EXTRACT_BE_U_2(cp));
break;
case T_TXT:
while (cp < rp) {
- ND_PRINT((ndo, " \""));
+ ND_PRINT(" \"");
cp = ns_cprint(ndo, cp);
if (cp == NULL)
return(NULL);
- ND_PRINT((ndo, "\""));
+ ND_PRINT("\"");
}
break;
case T_SRV:
- ND_PRINT((ndo, " "));
+ ND_PRINT(" ");
if (!ND_TTEST_6(cp))
return(NULL);
if (ns_nprint(ndo, cp + 6, bp) == NULL)
return(NULL);
- ND_PRINT((ndo, ":%d %d %d", EXTRACT_BE_U_2(cp + 4),
- EXTRACT_BE_U_2(cp), EXTRACT_BE_U_2(cp + 2)));
+ ND_PRINT(":%u %u %u", EXTRACT_BE_U_2(cp + 4),
+ EXTRACT_BE_U_2(cp), EXTRACT_BE_U_2(cp + 2));
break;
case T_AAAA:
{
char ntop_buf[INET6_ADDRSTRLEN];
- if (!ND_TTEST_LEN(cp, sizeof(struct in6_addr)))
+ if (!ND_TTEST_LEN(cp, sizeof(nd_ipv6)))
return(NULL);
- ND_PRINT((ndo, " %s",
- addrtostr6(cp, ntop_buf, sizeof(ntop_buf))));
+ ND_PRINT(" %s",
+ addrtostr6(cp, ntop_buf, sizeof(ntop_buf)));
break;
}
pbit = EXTRACT_U_1(cp);
pbyte = (pbit & ~7) / 8;
if (pbit > 128) {
- ND_PRINT((ndo, " %u(bad plen)", pbit));
+ ND_PRINT(" %u(bad plen)", pbit);
break;
} else if (pbit < 128) {
if (!ND_TTEST_LEN(cp + 1, sizeof(a) - pbyte))
return(NULL);
memset(&a, 0, sizeof(a));
memcpy(&a.s6_addr[pbyte], cp + 1, sizeof(a) - pbyte);
- ND_PRINT((ndo, " %u %s", pbit,
- addrtostr6(&a, ntop_buf, sizeof(ntop_buf))));
+ ND_PRINT(" %u %s", pbit,
+ addrtostr6(&a, ntop_buf, sizeof(ntop_buf)));
}
if (pbit > 0) {
- ND_PRINT((ndo, " "));
+ ND_PRINT(" ");
if (ns_nprint(ndo, cp + 1 + sizeof(a) - pbyte, bp) == NULL)
return(NULL);
}
}
case T_OPT:
- ND_PRINT((ndo, " UDPsize=%u", class));
+ ND_PRINT(" UDPsize=%u", class);
if (opt_flags & 0x8000)
- ND_PRINT((ndo, " DO"));
+ ND_PRINT(" DO");
break;
case T_UNSPECA: /* One long string */
if (!ND_TTEST_LEN(cp, len))
return(NULL);
- if (fn_printn(ndo, cp, len, ndo->ndo_snapend))
+ if (nd_printn(ndo, cp, len, ndo->ndo_snapend))
return(NULL);
break;
return(NULL);
if (!ndo->ndo_vflag)
break;
- ND_PRINT((ndo, " "));
+ ND_PRINT(" ");
if ((cp = ns_nprint(ndo, cp, bp)) == NULL)
return(NULL);
cp += 6;
if (!ND_TTEST_2(cp))
return(NULL);
- ND_PRINT((ndo, " fudge=%u", EXTRACT_BE_U_2(cp)));
+ ND_PRINT(" fudge=%u", EXTRACT_BE_U_2(cp));
cp += 2;
if (!ND_TTEST_2(cp))
return(NULL);
- ND_PRINT((ndo, " maclen=%u", EXTRACT_BE_U_2(cp)));
+ ND_PRINT(" maclen=%u", EXTRACT_BE_U_2(cp));
cp += 2 + EXTRACT_BE_U_2(cp);
if (!ND_TTEST_2(cp))
return(NULL);
- ND_PRINT((ndo, " origid=%u", EXTRACT_BE_U_2(cp)));
+ ND_PRINT(" origid=%u", EXTRACT_BE_U_2(cp));
cp += 2;
if (!ND_TTEST_2(cp))
return(NULL);
- ND_PRINT((ndo, " error=%u", EXTRACT_BE_U_2(cp)));
+ ND_PRINT(" error=%u", EXTRACT_BE_U_2(cp));
cp += 2;
if (!ND_TTEST_2(cp))
return(NULL);
- ND_PRINT((ndo, " otherlen=%u", EXTRACT_BE_U_2(cp)));
+ ND_PRINT(" otherlen=%u", EXTRACT_BE_U_2(cp));
cp += 2;
}
}
domain_print(netdissect_options *ndo,
const u_char *bp, u_int length, int is_mdns)
{
- const HEADER *np;
+ const dns_header_t *np;
uint16_t flags;
u_int qdcount, ancount, nscount, arcount;
u_int i;
const u_char *cp;
uint16_t b2;
- np = (const HEADER *)bp;
- ND_TCHECK(*np);
+ ndo->ndo_protocol = "domain";
+ np = (const dns_header_t *)bp;
+ ND_TCHECK_SIZE(np);
flags = EXTRACT_BE_U_2(np->flags);
/* get the byte-order right */
qdcount = EXTRACT_BE_U_2(np->qdcount);
if (DNS_QR(flags)) {
/* this is a response */
- ND_PRINT((ndo, "%d%s%s%s%s%s%s",
+ ND_PRINT("%u%s%s%s%s%s%s",
EXTRACT_BE_U_2(np->id),
ns_ops[DNS_OPCODE(flags)],
ns_resp[DNS_RCODE(flags)],
DNS_AA(flags)? "*" : "",
DNS_RA(flags)? "" : "-",
DNS_TC(flags)? "|" : "",
- DNS_AD(flags)? "$" : ""));
+ DNS_AD(flags)? "$" : "");
if (qdcount != 1)
- ND_PRINT((ndo, " [%uq]", qdcount));
+ ND_PRINT(" [%uq]", qdcount);
/* Print QUESTION section on -vv */
cp = (const u_char *)(np + 1);
for (i = 0; i < qdcount; i++) {
if (i != 0)
- ND_PRINT((ndo, ","));
+ ND_PRINT(",");
if (ndo->ndo_vflag > 1) {
- ND_PRINT((ndo, " q:"));
+ ND_PRINT(" q:");
if ((cp = ns_qprint(ndo, cp, bp, is_mdns)) == NULL)
goto trunc;
} else {
cp += 4; /* skip QTYPE and QCLASS */
}
}
- ND_PRINT((ndo, " %u/%u/%u", ancount, nscount, arcount));
+ ND_PRINT(" %u/%u/%u", ancount, nscount, arcount);
if (ancount) {
if ((cp = ns_rprint(ndo, cp, bp, is_mdns)) == NULL)
goto trunc;
ancount--;
while (cp < ndo->ndo_snapend && ancount) {
- ND_PRINT((ndo, ","));
+ ND_PRINT(",");
if ((cp = ns_rprint(ndo, cp, bp, is_mdns)) == NULL)
goto trunc;
ancount--;
/* Print NS and AR sections on -vv */
if (ndo->ndo_vflag > 1) {
if (cp < ndo->ndo_snapend && nscount) {
- ND_PRINT((ndo, " ns:"));
+ ND_PRINT(" ns:");
if ((cp = ns_rprint(ndo, cp, bp, is_mdns)) == NULL)
goto trunc;
nscount--;
while (cp < ndo->ndo_snapend && nscount) {
- ND_PRINT((ndo, ","));
+ ND_PRINT(",");
if ((cp = ns_rprint(ndo, cp, bp, is_mdns)) == NULL)
goto trunc;
nscount--;
if (nscount)
goto trunc;
if (cp < ndo->ndo_snapend && arcount) {
- ND_PRINT((ndo, " ar:"));
+ ND_PRINT(" ar:");
if ((cp = ns_rprint(ndo, cp, bp, is_mdns)) == NULL)
goto trunc;
arcount--;
while (cp < ndo->ndo_snapend && arcount) {
- ND_PRINT((ndo, ","));
+ ND_PRINT(",");
if ((cp = ns_rprint(ndo, cp, bp, is_mdns)) == NULL)
goto trunc;
arcount--;
}
else {
/* this is a request */
- ND_PRINT((ndo, "%d%s%s%s", EXTRACT_BE_U_2(np->id), ns_ops[DNS_OPCODE(flags)],
+ ND_PRINT("%u%s%s%s", EXTRACT_BE_U_2(np->id), ns_ops[DNS_OPCODE(flags)],
DNS_RD(flags) ? "+" : "",
- DNS_CD(flags) ? "%" : ""));
+ DNS_CD(flags) ? "%" : "");
/* any weirdness? */
b2 = EXTRACT_BE_U_2(((const u_short *)np) + 1);
if (b2 & 0x6cf)
- ND_PRINT((ndo, " [b2&3=0x%x]", b2));
+ ND_PRINT(" [b2&3=0x%x]", b2);
if (DNS_OPCODE(flags) == IQUERY) {
if (qdcount)
- ND_PRINT((ndo, " [%uq]", qdcount));
+ ND_PRINT(" [%uq]", qdcount);
if (ancount != 1)
- ND_PRINT((ndo, " [%ua]", ancount));
+ ND_PRINT(" [%ua]", ancount);
}
else {
if (ancount)
- ND_PRINT((ndo, " [%ua]", ancount));
+ ND_PRINT(" [%ua]", ancount);
if (qdcount != 1)
- ND_PRINT((ndo, " [%uq]", qdcount));
+ ND_PRINT(" [%uq]", qdcount);
}
if (nscount)
- ND_PRINT((ndo, " [%un]", nscount));
+ ND_PRINT(" [%un]", nscount);
if (arcount)
- ND_PRINT((ndo, " [%uau]", arcount));
+ ND_PRINT(" [%uau]", arcount);
cp = (const u_char *)(np + 1);
if (qdcount) {
goto trunc;
ancount--;
while (cp < ndo->ndo_snapend && ancount) {
- ND_PRINT((ndo, ","));
+ ND_PRINT(",");
if ((cp = ns_rprint(ndo, cp, bp, is_mdns)) == NULL)
goto trunc;
ancount--;
if (ancount)
goto trunc;
if (cp < ndo->ndo_snapend && nscount) {
- ND_PRINT((ndo, " ns:"));
+ ND_PRINT(" ns:");
if ((cp = ns_rprint(ndo, cp, bp, is_mdns)) == NULL)
goto trunc;
nscount--;
while (cp < ndo->ndo_snapend && nscount) {
- ND_PRINT((ndo, ","));
+ ND_PRINT(",");
if ((cp = ns_rprint(ndo, cp, bp, is_mdns)) == NULL)
goto trunc;
nscount--;
if (nscount > 0)
goto trunc;
if (cp < ndo->ndo_snapend && arcount) {
- ND_PRINT((ndo, " ar:"));
+ ND_PRINT(" ar:");
if ((cp = ns_rprint(ndo, cp, bp, is_mdns)) == NULL)
goto trunc;
arcount--;
while (cp < ndo->ndo_snapend && arcount) {
- ND_PRINT((ndo, ","));
+ ND_PRINT(",");
if ((cp = ns_rprint(ndo, cp, bp, is_mdns)) == NULL)
goto trunc;
arcount--;
goto trunc;
}
}
- ND_PRINT((ndo, " (%d)", length));
+ ND_PRINT(" (%u)", length);
return;
trunc:
- ND_PRINT((ndo, "[|domain]"));
+ nd_print_trunc(ndo);
}
projects / tcpdump / blobdiff