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authoranonimal <anonimal@i2pmail.org>2017-06-28 21:07:24 +0000
committeranonimal <anonimal@i2pmail.org>2018-03-18 15:52:19 +0000
commit84c5a9ba481d7a33cc0fd0ca43867b61d127d907 (patch)
treef05d3d3f107da02005b4a61f0e5074c113a7165c /external/unbound/sldns/wire2str.c
parentMerge pull request #3416 (diff)
downloadmonero-84c5a9ba481d7a33cc0fd0ca43867b61d127d907.tar.xz
Unbound: remove unbound from in-tree source
We'll instead use a git submodule to pull from our unbound repo.
Diffstat (limited to 'external/unbound/sldns/wire2str.c')
-rw-r--r--external/unbound/sldns/wire2str.c2006
1 files changed, 0 insertions, 2006 deletions
diff --git a/external/unbound/sldns/wire2str.c b/external/unbound/sldns/wire2str.c
deleted file mode 100644
index b2ca6192c..000000000
--- a/external/unbound/sldns/wire2str.c
+++ /dev/null
@@ -1,2006 +0,0 @@
-/*
- * wire2str.c
- *
- * conversion routines from the wire format
- * to the presentation format (strings)
- *
- * (c) NLnet Labs, 2004-2006
- *
- * See the file LICENSE for the license
- */
-/**
- * \file
- *
- * Contains functions to translate the wireformat to text
- * representation, as well as functions to print them.
- */
-#include "config.h"
-#include "sldns/wire2str.h"
-#include "sldns/str2wire.h"
-#include "sldns/rrdef.h"
-#include "sldns/pkthdr.h"
-#include "sldns/parseutil.h"
-#include "sldns/sbuffer.h"
-#include "sldns/keyraw.h"
-#ifdef HAVE_TIME_H
-#include <time.h>
-#endif
-#include <sys/time.h>
-#include <stdarg.h>
-#include <ctype.h>
-#ifdef HAVE_NETDB_H
-#include <netdb.h>
-#endif
-
-/* lookup tables for standard DNS stuff */
-/* Taken from RFC 2535, section 7. */
-static sldns_lookup_table sldns_algorithms_data[] = {
- { LDNS_RSAMD5, "RSAMD5" },
- { LDNS_DH, "DH" },
- { LDNS_DSA, "DSA" },
- { LDNS_ECC, "ECC" },
- { LDNS_RSASHA1, "RSASHA1" },
- { LDNS_DSA_NSEC3, "DSA-NSEC3-SHA1" },
- { LDNS_RSASHA1_NSEC3, "RSASHA1-NSEC3-SHA1" },
- { LDNS_RSASHA256, "RSASHA256"},
- { LDNS_RSASHA512, "RSASHA512"},
- { LDNS_ECC_GOST, "ECC-GOST"},
- { LDNS_ECDSAP256SHA256, "ECDSAP256SHA256"},
- { LDNS_ECDSAP384SHA384, "ECDSAP384SHA384"},
- { LDNS_ED25519, "ED25519"},
- { LDNS_ED448, "ED448"},
- { LDNS_INDIRECT, "INDIRECT" },
- { LDNS_PRIVATEDNS, "PRIVATEDNS" },
- { LDNS_PRIVATEOID, "PRIVATEOID" },
- { 0, NULL }
-};
-sldns_lookup_table* sldns_algorithms = sldns_algorithms_data;
-
-/* hash algorithms in DS record */
-static sldns_lookup_table sldns_hashes_data[] = {
- { LDNS_SHA1, "SHA1" },
- { LDNS_SHA256, "SHA256" },
- { LDNS_HASH_GOST, "HASH-GOST" },
- { LDNS_SHA384, "SHA384" },
- { 0, NULL }
-};
-sldns_lookup_table* sldns_hashes = sldns_hashes_data;
-
-/* Taken from RFC 4398 */
-static sldns_lookup_table sldns_cert_algorithms_data[] = {
- { LDNS_CERT_PKIX, "PKIX" },
- { LDNS_CERT_SPKI, "SPKI" },
- { LDNS_CERT_PGP, "PGP" },
- { LDNS_CERT_IPKIX, "IPKIX" },
- { LDNS_CERT_ISPKI, "ISPKI" },
- { LDNS_CERT_IPGP, "IPGP" },
- { LDNS_CERT_ACPKIX, "ACPKIX" },
- { LDNS_CERT_IACPKIX, "IACPKIX" },
- { LDNS_CERT_URI, "URI" },
- { LDNS_CERT_OID, "OID" },
- { 0, NULL }
-};
-sldns_lookup_table* sldns_cert_algorithms = sldns_cert_algorithms_data;
-
-/* if these are used elsewhere */
-static sldns_lookup_table sldns_rcodes_data[] = {
- { LDNS_RCODE_NOERROR, "NOERROR" },
- { LDNS_RCODE_FORMERR, "FORMERR" },
- { LDNS_RCODE_SERVFAIL, "SERVFAIL" },
- { LDNS_RCODE_NXDOMAIN, "NXDOMAIN" },
- { LDNS_RCODE_NOTIMPL, "NOTIMPL" },
- { LDNS_RCODE_REFUSED, "REFUSED" },
- { LDNS_RCODE_YXDOMAIN, "YXDOMAIN" },
- { LDNS_RCODE_YXRRSET, "YXRRSET" },
- { LDNS_RCODE_NXRRSET, "NXRRSET" },
- { LDNS_RCODE_NOTAUTH, "NOTAUTH" },
- { LDNS_RCODE_NOTZONE, "NOTZONE" },
- { 0, NULL }
-};
-sldns_lookup_table* sldns_rcodes = sldns_rcodes_data;
-
-static sldns_lookup_table sldns_opcodes_data[] = {
- { LDNS_PACKET_QUERY, "QUERY" },
- { LDNS_PACKET_IQUERY, "IQUERY" },
- { LDNS_PACKET_STATUS, "STATUS" },
- { LDNS_PACKET_NOTIFY, "NOTIFY" },
- { LDNS_PACKET_UPDATE, "UPDATE" },
- { 0, NULL }
-};
-sldns_lookup_table* sldns_opcodes = sldns_opcodes_data;
-
-static sldns_lookup_table sldns_wireparse_errors_data[] = {
- { LDNS_WIREPARSE_ERR_OK, "no parse error" },
- { LDNS_WIREPARSE_ERR_GENERAL, "parse error" },
- { LDNS_WIREPARSE_ERR_DOMAINNAME_OVERFLOW, "Domainname length overflow" },
- { LDNS_WIREPARSE_ERR_DOMAINNAME_UNDERFLOW, "Domainname length underflow (zero length)" },
- { LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL, "buffer too small" },
- { LDNS_WIREPARSE_ERR_LABEL_OVERFLOW, "Label length overflow" },
- { LDNS_WIREPARSE_ERR_EMPTY_LABEL, "Empty label" },
- { LDNS_WIREPARSE_ERR_SYNTAX_BAD_ESCAPE, "Syntax error, bad escape sequence" },
- { LDNS_WIREPARSE_ERR_SYNTAX, "Syntax error, could not parse the RR" },
- { LDNS_WIREPARSE_ERR_SYNTAX_TTL, "Syntax error, could not parse the RR's TTL" },
- { LDNS_WIREPARSE_ERR_SYNTAX_TYPE, "Syntax error, could not parse the RR's type" },
- { LDNS_WIREPARSE_ERR_SYNTAX_CLASS, "Syntax error, could not parse the RR's class" },
- { LDNS_WIREPARSE_ERR_SYNTAX_RDATA, "Syntax error, could not parse the RR's rdata" },
- { LDNS_WIREPARSE_ERR_SYNTAX_MISSING_VALUE, "Syntax error, value expected" },
- { LDNS_WIREPARSE_ERR_INVALID_STR, "Conversion error, string expected" },
- { LDNS_WIREPARSE_ERR_SYNTAX_B64, "Conversion error, b64 encoding expected" },
- { LDNS_WIREPARSE_ERR_SYNTAX_B32_EXT, "Conversion error, b32 ext encoding expected" },
- { LDNS_WIREPARSE_ERR_SYNTAX_HEX, "Conversion error, hex encoding expected" },
- { LDNS_WIREPARSE_ERR_CERT_BAD_ALGORITHM, "Bad algorithm type for CERT record" },
- { LDNS_WIREPARSE_ERR_SYNTAX_TIME, "Conversion error, time encoding expected" },
- { LDNS_WIREPARSE_ERR_SYNTAX_PERIOD, "Conversion error, time period encoding expected" },
- { LDNS_WIREPARSE_ERR_SYNTAX_ILNP64, "Conversion error, 4 colon separated hex numbers expected" },
- { LDNS_WIREPARSE_ERR_SYNTAX_EUI48,
- "Conversion error, 6 two character hex numbers "
- "separated by dashes expected (i.e. xx-xx-xx-xx-xx-xx" },
- { LDNS_WIREPARSE_ERR_SYNTAX_EUI64,
- "Conversion error, 8 two character hex numbers "
- "separated by dashes expected (i.e. xx-xx-xx-xx-xx-xx-xx-xx" },
- { LDNS_WIREPARSE_ERR_SYNTAX_TAG,
- "Conversion error, a non-zero sequence of US-ASCII letters "
- "and numbers in lower case expected" },
- { LDNS_WIREPARSE_ERR_NOT_IMPL, "not implemented" },
- { LDNS_WIREPARSE_ERR_SYNTAX_INT, "Conversion error, integer expected" },
- { LDNS_WIREPARSE_ERR_SYNTAX_IP4, "Conversion error, ip4 addr expected" },
- { LDNS_WIREPARSE_ERR_SYNTAX_IP6, "Conversion error, ip6 addr expected" },
- { LDNS_WIREPARSE_ERR_SYNTAX_INTEGER_OVERFLOW, "Syntax error, integer overflow" },
- { LDNS_WIREPARSE_ERR_INCLUDE, "$INCLUDE directive was seen in the zone" },
- { LDNS_WIREPARSE_ERR_PARENTHESIS, "Parse error, parenthesis mismatch" },
- { 0, NULL }
-};
-sldns_lookup_table* sldns_wireparse_errors = sldns_wireparse_errors_data;
-
-static sldns_lookup_table sldns_edns_flags_data[] = {
- { 3600, "do"},
- { 0, NULL}
-};
-sldns_lookup_table* sldns_edns_flags = sldns_edns_flags_data;
-
-static sldns_lookup_table sldns_edns_options_data[] = {
- { 1, "LLQ" },
- { 2, "UL" },
- { 3, "NSID" },
- /* 4 draft-cheshire-edns0-owner-option */
- { 5, "DAU" },
- { 6, "DHU" },
- { 7, "N3U" },
- { 8, "edns-client-subnet" },
- { 11, "edns-tcp-keepalive"},
- { 12, "Padding" },
- { 0, NULL}
-};
-sldns_lookup_table* sldns_edns_options = sldns_edns_options_data;
-
-char* sldns_wire2str_pkt(uint8_t* data, size_t len)
-{
- size_t slen = (size_t)sldns_wire2str_pkt_buf(data, len, NULL, 0);
- char* result = (char*)malloc(slen+1);
- if(!result) return NULL;
- sldns_wire2str_pkt_buf(data, len, result, slen+1);
- return result;
-}
-
-char* sldns_wire2str_rr(uint8_t* rr, size_t len)
-{
- size_t slen = (size_t)sldns_wire2str_rr_buf(rr, len, NULL, 0);
- char* result = (char*)malloc(slen+1);
- if(!result) return NULL;
- sldns_wire2str_rr_buf(rr, len, result, slen+1);
- return result;
-}
-
-char* sldns_wire2str_type(uint16_t rrtype)
-{
- char buf[16];
- sldns_wire2str_type_buf(rrtype, buf, sizeof(buf));
- return strdup(buf);
-}
-
-char* sldns_wire2str_class(uint16_t rrclass)
-{
- char buf[16];
- sldns_wire2str_class_buf(rrclass, buf, sizeof(buf));
- return strdup(buf);
-}
-
-char* sldns_wire2str_dname(uint8_t* dname, size_t dname_len)
-{
- size_t slen=(size_t)sldns_wire2str_dname_buf(dname, dname_len, NULL, 0);
- char* result = (char*)malloc(slen+1);
- if(!result) return NULL;
- sldns_wire2str_dname_buf(dname, dname_len, result, slen+1);
- return result;
-}
-
-char* sldns_wire2str_rcode(int rcode)
-{
- char buf[16];
- sldns_wire2str_rcode_buf(rcode, buf, sizeof(buf));
- return strdup(buf);
-}
-
-int sldns_wire2str_pkt_buf(uint8_t* d, size_t dlen, char* s, size_t slen)
-{
- /* use arguments as temporary variables */
- return sldns_wire2str_pkt_scan(&d, &dlen, &s, &slen);
-}
-
-int sldns_wire2str_rr_buf(uint8_t* d, size_t dlen, char* s, size_t slen)
-{
- /* use arguments as temporary variables */
- return sldns_wire2str_rr_scan(&d, &dlen, &s, &slen, NULL, 0);
-}
-
-int sldns_wire2str_rdata_buf(uint8_t* rdata, size_t rdata_len, char* str,
- size_t str_len, uint16_t rrtype)
-{
- /* use arguments as temporary variables */
- return sldns_wire2str_rdata_scan(&rdata, &rdata_len, &str, &str_len,
- rrtype, NULL, 0);
-}
-
-int sldns_wire2str_rr_unknown_buf(uint8_t* d, size_t dlen, char* s, size_t slen)
-{
- /* use arguments as temporary variables */
- return sldns_wire2str_rr_unknown_scan(&d, &dlen, &s, &slen, NULL, 0);
-}
-
-int sldns_wire2str_rr_comment_buf(uint8_t* rr, size_t rrlen, size_t dname_len,
- char* s, size_t slen)
-{
- uint16_t rrtype = sldns_wirerr_get_type(rr, rrlen, dname_len);
- return sldns_wire2str_rr_comment_print(&s, &slen, rr, rrlen, dname_len,
- rrtype);
-}
-
-int sldns_wire2str_type_buf(uint16_t rrtype, char* s, size_t slen)
-{
- /* use arguments as temporary variables */
- return sldns_wire2str_type_print(&s, &slen, rrtype);
-}
-
-int sldns_wire2str_class_buf(uint16_t rrclass, char* s, size_t slen)
-{
- /* use arguments as temporary variables */
- return sldns_wire2str_class_print(&s, &slen, rrclass);
-}
-
-int sldns_wire2str_rcode_buf(int rcode, char* s, size_t slen)
-{
- /* use arguments as temporary variables */
- return sldns_wire2str_rcode_print(&s, &slen, rcode);
-}
-
-int sldns_wire2str_opcode_buf(int opcode, char* s, size_t slen)
-{
- /* use arguments as temporary variables */
- return sldns_wire2str_opcode_print(&s, &slen, opcode);
-}
-
-int sldns_wire2str_dname_buf(uint8_t* d, size_t dlen, char* s, size_t slen)
-{
- /* use arguments as temporary variables */
- return sldns_wire2str_dname_scan(&d, &dlen, &s, &slen, NULL, 0);
-}
-
-int sldns_str_vprint(char** str, size_t* slen, const char* format, va_list args)
-{
- int w = vsnprintf(*str, *slen, format, args);
- if(w < 0) {
- /* error in printout */
- return 0;
- } else if((size_t)w >= *slen) {
- *str = NULL; /* we do not want str to point outside of buffer*/
- *slen = 0;
- } else {
- *str += w;
- *slen -= w;
- }
- return w;
-}
-
-int sldns_str_print(char** str, size_t* slen, const char* format, ...)
-{
- int w;
- va_list args;
- va_start(args, format);
- w = sldns_str_vprint(str, slen, format, args);
- va_end(args);
- return w;
-}
-
-/** print hex format into text buffer for specified length */
-static int print_hex_buf(char** s, size_t* slen, uint8_t* buf, size_t len)
-{
- const char* hex = "0123456789ABCDEF";
- size_t i;
- for(i=0; i<len; i++) {
- (void)sldns_str_print(s, slen, "%c%c", hex[(buf[i]&0xf0)>>4],
- hex[buf[i]&0x0f]);
- }
- return (int)len*2;
-}
-
-/** print remainder of buffer in hex format with prefixed text */
-static int print_remainder_hex(const char* pref, uint8_t** d, size_t* dlen,
- char** s, size_t* slen)
-{
- int w = 0;
- w += sldns_str_print(s, slen, "%s", pref);
- w += print_hex_buf(s, slen, *d, *dlen);
- *d += *dlen;
- *dlen = 0;
- return w;
-}
-
-int sldns_wire2str_pkt_scan(uint8_t** d, size_t* dlen, char** s, size_t* slen)
-{
- int w = 0;
- unsigned qdcount, ancount, nscount, arcount, i;
- uint8_t* pkt = *d;
- size_t pktlen = *dlen;
- if(*dlen >= LDNS_HEADER_SIZE) {
- qdcount = (unsigned)LDNS_QDCOUNT(*d);
- ancount = (unsigned)LDNS_ANCOUNT(*d);
- nscount = (unsigned)LDNS_NSCOUNT(*d);
- arcount = (unsigned)LDNS_ARCOUNT(*d);
- } else {
- qdcount = ancount = nscount = arcount = 0;
- }
- w += sldns_wire2str_header_scan(d, dlen, s, slen);
- w += sldns_str_print(s, slen, "\n");
- w += sldns_str_print(s, slen, ";; QUESTION SECTION:\n");
- for(i=0; i<qdcount; i++) {
- w += sldns_wire2str_rrquestion_scan(d, dlen, s, slen,
- pkt, pktlen);
- if(!*dlen) break;
- }
- w += sldns_str_print(s, slen, "\n");
- w += sldns_str_print(s, slen, ";; ANSWER SECTION:\n");
- for(i=0; i<ancount; i++) {
- w += sldns_wire2str_rr_scan(d, dlen, s, slen, pkt, pktlen);
- if(!*dlen) break;
- }
- w += sldns_str_print(s, slen, "\n");
- w += sldns_str_print(s, slen, ";; AUTHORITY SECTION:\n");
- for(i=0; i<nscount; i++) {
- w += sldns_wire2str_rr_scan(d, dlen, s, slen, pkt, pktlen);
- if(!*dlen) break;
- }
- w += sldns_str_print(s, slen, "\n");
- w += sldns_str_print(s, slen, ";; ADDITIONAL SECTION:\n");
- for(i=0; i<arcount; i++) {
- w += sldns_wire2str_rr_scan(d, dlen, s, slen, pkt, pktlen);
- if(!*dlen) break;
- }
- /* other fields: WHEN(time), SERVER(IP) not available here. */
- w += sldns_str_print(s, slen, ";; MSG SIZE rcvd: %d\n", (int)pktlen);
- if(*dlen > 0) {
- w += print_remainder_hex(";; trailing garbage 0x",
- d, dlen, s, slen);
- w += sldns_str_print(s, slen, "\n");
- }
- return w;
-}
-
-/** scan type, class and ttl and printout, for rr */
-static int sldns_rr_tcttl_scan(uint8_t** d, size_t* dl, char** s, size_t* sl)
-{
- int w = 0;
- uint16_t t, c;
- uint32_t ttl;
- if(*dl < 8) {
- if(*dl < 4)
- return w + print_remainder_hex("; Error malformed 0x",
- d, dl, s, sl);
- /* these print values or 0x.. if none left */
- t = sldns_read_uint16(*d);
- c = sldns_read_uint16((*d)+2);
- (*d)+=4;
- (*dl)-=4;
- w += sldns_wire2str_class_print(s, sl, c);
- w += sldns_str_print(s, sl, "\t");
- w += sldns_wire2str_type_print(s, sl, t);
- if(*dl == 0)
- return w + sldns_str_print(s, sl, "; Error no ttl");
- return w + print_remainder_hex(
- "; Error malformed ttl 0x", d, dl, s, sl);
- }
- t = sldns_read_uint16(*d);
- c = sldns_read_uint16((*d)+2);
- ttl = sldns_read_uint32((*d)+4);
- (*d)+=8;
- (*dl)-=8;
- w += sldns_str_print(s, sl, "%lu\t", (unsigned long)ttl);
- w += sldns_wire2str_class_print(s, sl, c);
- w += sldns_str_print(s, sl, "\t");
- w += sldns_wire2str_type_print(s, sl, t);
- return w;
-}
-
-int sldns_wire2str_rr_scan(uint8_t** d, size_t* dlen, char** s, size_t* slen,
- uint8_t* pkt, size_t pktlen)
-{
- int w = 0;
- uint8_t* rr = *d;
- size_t rrlen = *dlen, dname_off, rdlen, ordlen;
- uint16_t rrtype = 0;
-
- if(*dlen >= 3 && (*d)[0]==0 &&
- sldns_read_uint16((*d)+1)==LDNS_RR_TYPE_OPT) {
- /* perform EDNS OPT processing */
- return sldns_wire2str_edns_scan(d, dlen, s, slen, pkt, pktlen);
- }
-
- /* try to scan the rdata with pretty-printing, but if that fails, then
- * scan the rdata as an unknown RR type */
- w += sldns_wire2str_dname_scan(d, dlen, s, slen, pkt, pktlen);
- w += sldns_str_print(s, slen, "\t");
- dname_off = rrlen-(*dlen);
- if(*dlen == 4) {
- /* like a question-RR */
- uint16_t t = sldns_read_uint16(*d);
- uint16_t c = sldns_read_uint16((*d)+2);
- (*d)+=4;
- (*dlen)-=4;
- w += sldns_wire2str_class_print(s, slen, c);
- w += sldns_str_print(s, slen, "\t");
- w += sldns_wire2str_type_print(s, slen, t);
- w += sldns_str_print(s, slen, " ; Error no ttl,rdata\n");
- return w;
- }
- if(*dlen < 8) {
- if(*dlen == 0)
- return w + sldns_str_print(s, slen, ";Error missing RR\n");
- w += print_remainder_hex(";Error partial RR 0x", d, dlen, s, slen);
- return w + sldns_str_print(s, slen, "\n");
- }
- rrtype = sldns_read_uint16(*d);
- w += sldns_rr_tcttl_scan(d, dlen, s, slen);
- w += sldns_str_print(s, slen, "\t");
-
- /* rdata */
- if(*dlen < 2) {
- if(*dlen == 0)
- return w + sldns_str_print(s, slen, ";Error missing rdatalen\n");
- w += print_remainder_hex(";Error missing rdatalen 0x",
- d, dlen, s, slen);
- return w + sldns_str_print(s, slen, "\n");
- }
- rdlen = sldns_read_uint16(*d);
- ordlen = rdlen;
- (*d)+=2;
- (*dlen)-=2;
- if(*dlen < rdlen) {
- w += sldns_str_print(s, slen, "\\# %u ", (unsigned)rdlen);
- if(*dlen == 0)
- return w + sldns_str_print(s, slen, ";Error missing rdata\n");
- w += print_remainder_hex(";Error partial rdata 0x", d, dlen, s, slen);
- return w + sldns_str_print(s, slen, "\n");
- }
- w += sldns_wire2str_rdata_scan(d, &rdlen, s, slen, rrtype, pkt, pktlen);
- (*dlen) -= (ordlen-rdlen);
-
- /* default comment */
- w += sldns_wire2str_rr_comment_print(s, slen, rr, rrlen, dname_off,
- rrtype);
- w += sldns_str_print(s, slen, "\n");
- return w;
-}
-
-int sldns_wire2str_rrquestion_scan(uint8_t** d, size_t* dlen, char** s,
- size_t* slen, uint8_t* pkt, size_t pktlen)
-{
- int w = 0;
- uint16_t t, c;
- w += sldns_wire2str_dname_scan(d, dlen, s, slen, pkt, pktlen);
- w += sldns_str_print(s, slen, "\t");
- if(*dlen < 4) {
- if(*dlen == 0)
- return w + sldns_str_print(s, slen, "Error malformed\n");
- w += print_remainder_hex("Error malformed 0x", d, dlen, s, slen);
- return w + sldns_str_print(s, slen, "\n");
- }
- t = sldns_read_uint16(*d);
- c = sldns_read_uint16((*d)+2);
- (*d)+=4;
- (*dlen)-=4;
- w += sldns_wire2str_class_print(s, slen, c);
- w += sldns_str_print(s, slen, "\t");
- w += sldns_wire2str_type_print(s, slen, t);
- w += sldns_str_print(s, slen, "\n");
- return w;
-}
-
-int sldns_wire2str_rr_unknown_scan(uint8_t** d, size_t* dlen, char** s,
- size_t* slen, uint8_t* pkt, size_t pktlen)
-{
- size_t rdlen, ordlen;
- int w = 0;
- w += sldns_wire2str_dname_scan(d, dlen, s, slen, pkt, pktlen);
- w += sldns_str_print(s, slen, "\t");
- w += sldns_rr_tcttl_scan(d, dlen, s, slen);
- w += sldns_str_print(s, slen, "\t");
- if(*dlen < 2) {
- if(*dlen == 0)
- return w + sldns_str_print(s, slen, ";Error missing rdatalen\n");
- w += print_remainder_hex(";Error missing rdatalen 0x",
- d, dlen, s, slen);
- return w + sldns_str_print(s, slen, "\n");
- }
- rdlen = sldns_read_uint16(*d);
- ordlen = rdlen;
- (*d) += 2;
- (*dlen) -= 2;
- if(*dlen < rdlen) {
- w += sldns_str_print(s, slen, "\\# %u ", (unsigned)rdlen);
- if(*dlen == 0)
- return w + sldns_str_print(s, slen, ";Error missing rdata\n");
- w += print_remainder_hex(";Error partial rdata 0x", d, dlen, s, slen);
- return w + sldns_str_print(s, slen, "\n");
- }
- w += sldns_wire2str_rdata_unknown_scan(d, &rdlen, s, slen);
- (*dlen) -= (ordlen-rdlen);
- w += sldns_str_print(s, slen, "\n");
- return w;
-}
-
-/** print rr comment for type DNSKEY */
-static int rr_comment_dnskey(char** s, size_t* slen, uint8_t* rr,
- size_t rrlen, size_t dname_off)
-{
- size_t rdlen;
- uint8_t* rdata;
- int flags, w = 0;
- if(rrlen < dname_off + 10) return 0;
- rdlen = sldns_read_uint16(rr+dname_off+8);
- if(rrlen < dname_off + 10 + rdlen) return 0;
- rdata = rr + dname_off + 10;
- flags = (int)sldns_read_uint16(rdata);
- w += sldns_str_print(s, slen, " ;{");
-
- /* id */
- w += sldns_str_print(s, slen, "id = %u",
- sldns_calc_keytag_raw(rdata, rdlen));
-
- /* flags */
- if((flags&LDNS_KEY_ZONE_KEY)) {
- if((flags&LDNS_KEY_SEP_KEY))
- w += sldns_str_print(s, slen, " (ksk)");
- else w += sldns_str_print(s, slen, " (zsk)");
- }
-
- /* keysize */
- if(rdlen > 4) {
- w += sldns_str_print(s, slen, ", ");
- w += sldns_str_print(s, slen, "size = %db",
- (int)sldns_rr_dnskey_key_size_raw(
- (unsigned char*)rdata+4, rdlen-4, (int)(rdata[3])));
- }
-
- w += sldns_str_print(s, slen, "}");
- return w;
-}
-
-/** print rr comment for type RRSIG */
-static int rr_comment_rrsig(char** s, size_t* slen, uint8_t* rr,
- size_t rrlen, size_t dname_off)
-{
- size_t rdlen;
- uint8_t* rdata;
- if(rrlen < dname_off + 10) return 0;
- rdlen = sldns_read_uint16(rr+dname_off+8);
- if(rrlen < dname_off + 10 + rdlen) return 0;
- rdata = rr + dname_off + 10;
- if(rdlen < 18) return 0;
- return sldns_str_print(s, slen, " ;{id = %d}",
- (int)sldns_read_uint16(rdata+16));
-}
-
-/** print rr comment for type NSEC3 */
-static int rr_comment_nsec3(char** s, size_t* slen, uint8_t* rr,
- size_t rrlen, size_t dname_off)
-{
- size_t rdlen;
- uint8_t* rdata;
- int w = 0;
- if(rrlen < dname_off + 10) return 0;
- rdlen = sldns_read_uint16(rr+dname_off+8);
- if(rrlen < dname_off + 10 + rdlen) return 0;
- rdata = rr + dname_off + 10;
- if(rdlen < 2) return 0;
- if((rdata[1] & LDNS_NSEC3_VARS_OPTOUT_MASK))
- w += sldns_str_print(s, slen, " ;{flags: optout}");
- return w;
-}
-
-int sldns_wire2str_rr_comment_print(char** s, size_t* slen, uint8_t* rr,
- size_t rrlen, size_t dname_off, uint16_t rrtype)
-{
- if(rrtype == LDNS_RR_TYPE_DNSKEY) {
- return rr_comment_dnskey(s, slen, rr, rrlen, dname_off);
- } else if(rrtype == LDNS_RR_TYPE_RRSIG) {
- return rr_comment_rrsig(s, slen, rr, rrlen, dname_off);
- } else if(rrtype == LDNS_RR_TYPE_NSEC3) {
- return rr_comment_nsec3(s, slen, rr, rrlen, dname_off);
- }
- return 0;
-}
-
-int sldns_wire2str_header_scan(uint8_t** d, size_t* dlen, char** s,
- size_t* slen)
-{
- int w = 0;
- int opcode, rcode;
- w += sldns_str_print(s, slen, ";; ->>HEADER<<- ");
- if(*dlen == 0)
- return w+sldns_str_print(s, slen, "Error empty packet");
- if(*dlen < 4)
- return w+print_remainder_hex("Error header too short 0x", d, dlen, s, slen);
- opcode = (int)LDNS_OPCODE_WIRE(*d);
- rcode = (int)LDNS_RCODE_WIRE(*d);
- w += sldns_str_print(s, slen, "opcode: ");
- w += sldns_wire2str_opcode_print(s, slen, opcode);
- w += sldns_str_print(s, slen, ", ");
- w += sldns_str_print(s, slen, "rcode: ");
- w += sldns_wire2str_rcode_print(s, slen, rcode);
- w += sldns_str_print(s, slen, ", ");
- w += sldns_str_print(s, slen, "id: %d\n", (int)LDNS_ID_WIRE(*d));
- w += sldns_str_print(s, slen, ";; flags:");
- if(LDNS_QR_WIRE(*d)) w += sldns_str_print(s, slen, " qr");
- if(LDNS_AA_WIRE(*d)) w += sldns_str_print(s, slen, " aa");
- if(LDNS_TC_WIRE(*d)) w += sldns_str_print(s, slen, " tc");
- if(LDNS_RD_WIRE(*d)) w += sldns_str_print(s, slen, " rd");
- if(LDNS_CD_WIRE(*d)) w += sldns_str_print(s, slen, " cd");
- if(LDNS_RA_WIRE(*d)) w += sldns_str_print(s, slen, " ra");
- if(LDNS_AD_WIRE(*d)) w += sldns_str_print(s, slen, " ad");
- if(LDNS_Z_WIRE(*d)) w += sldns_str_print(s, slen, " z");
- w += sldns_str_print(s, slen, " ; ");
- if(*dlen < LDNS_HEADER_SIZE)
- return w+print_remainder_hex("Error header too short 0x", d, dlen, s, slen);
- w += sldns_str_print(s, slen, "QUERY: %d, ", (int)LDNS_QDCOUNT(*d));
- w += sldns_str_print(s, slen, "ANSWER: %d, ", (int)LDNS_ANCOUNT(*d));
- w += sldns_str_print(s, slen, "AUTHORITY: %d, ", (int)LDNS_NSCOUNT(*d));
- w += sldns_str_print(s, slen, "ADDITIONAL: %d ", (int)LDNS_ARCOUNT(*d));
- *d += LDNS_HEADER_SIZE;
- *dlen -= LDNS_HEADER_SIZE;
- return w;
-}
-
-int sldns_wire2str_rdata_scan(uint8_t** d, size_t* dlen, char** s,
- size_t* slen, uint16_t rrtype, uint8_t* pkt, size_t pktlen)
-{
- /* try to prettyprint, but if that fails, use unknown format */
- uint8_t* origd = *d;
- char* origs = *s;
- size_t origdlen = *dlen, origslen = *slen;
- size_t r_cnt, r_max;
- sldns_rdf_type rdftype;
- int w = 0, n;
-
- const sldns_rr_descriptor *desc = sldns_rr_descript(rrtype);
- if(!desc) /* unknown format */
- return sldns_wire2str_rdata_unknown_scan(d, dlen, s, slen);
- /* dlen equals the rdatalen for the rdata */
-
- r_max = sldns_rr_descriptor_maximum(desc);
- for(r_cnt=0; r_cnt < r_max; r_cnt++) {
- if(*dlen == 0) {
- if(r_cnt < sldns_rr_descriptor_minimum(desc))
- goto failed;
- break; /* nothing more to print */
- }
- rdftype = sldns_rr_descriptor_field_type(desc, r_cnt);
- if(r_cnt != 0)
- w += sldns_str_print(s, slen, " ");
- n = sldns_wire2str_rdf_scan(d, dlen, s, slen, rdftype,
- pkt, pktlen);
- if(n == -1) {
- failed:
- /* failed, use unknown format */
- *d = origd; *s = origs;
- *dlen = origdlen; *slen = origslen;
- return sldns_wire2str_rdata_unknown_scan(d, dlen,
- s, slen);
- }
- w += n;
- }
- if(*dlen != 0) {
- goto failed;
- }
- return w;
-}
-
-int sldns_wire2str_rdata_unknown_scan(uint8_t** d, size_t* dlen, char** s,
- size_t* slen)
-{
- int w = 0;
-
- /* print length */
- w += sldns_str_print(s, slen, "\\# %u", (unsigned)*dlen);
-
- /* print rdlen in hex */
- if(*dlen != 0)
- w += sldns_str_print(s, slen, " ");
- w += print_hex_buf(s, slen, *d, *dlen);
- (*d) += *dlen;
- (*dlen) = 0;
- return w;
-}
-
-/** print and escape one character for a domain dname */
-static int dname_char_print(char** s, size_t* slen, uint8_t c)
-{
- if(c == '.' || c == ';' || c == '(' || c == ')' || c == '\\')
- return sldns_str_print(s, slen, "\\%c", c);
- else if(!(isascii((unsigned char)c) && isgraph((unsigned char)c)))
- return sldns_str_print(s, slen, "\\%03u", (unsigned)c);
- /* plain printout */
- if(*slen) {
- **s = (char)c;
- (*s)++;
- (*slen)--;
- }
- return 1;
-}
-
-int sldns_wire2str_dname_scan(uint8_t** d, size_t* dlen, char** s, size_t* slen,
- uint8_t* pkt, size_t pktlen)
-{
- int w = 0;
- /* spool labels onto the string, use compression if its there */
- uint8_t* pos = *d;
- unsigned i, counter=0;
- const unsigned maxcompr = 1000; /* loop detection, max compr ptrs */
- int in_buf = 1;
- if(*dlen == 0) return sldns_str_print(s, slen, "ErrorMissingDname");
- if(*pos == 0) {
- (*d)++;
- (*dlen)--;
- return sldns_str_print(s, slen, ".");
- }
- while(*pos) {
- /* read label length */
- uint8_t labellen = *pos++;
- if(in_buf) { (*d)++; (*dlen)--; }
-
- /* find out what sort of label we have */
- if((labellen&0xc0) == 0xc0) {
- /* compressed */
- uint16_t target = 0;
- if(in_buf && *dlen == 0)
- return w + sldns_str_print(s, slen,
- "ErrorPartialDname");
- else if(!in_buf && pos+1 > pkt+pktlen)
- return w + sldns_str_print(s, slen,
- "ErrorPartialDname");
- target = ((labellen&0x3f)<<8) | *pos;
- if(in_buf) { (*d)++; (*dlen)--; }
- /* move to target, if possible */
- if(!pkt || target >= pktlen)
- return w + sldns_str_print(s, slen,
- "ErrorComprPtrOutOfBounds");
- if(counter++ > maxcompr)
- return w + sldns_str_print(s, slen,
- "ErrorComprPtrLooped");
- in_buf = 0;
- pos = pkt+target;
- continue;
- } else if((labellen&0xc0)) {
- /* notimpl label type */
- w += sldns_str_print(s, slen,
- "ErrorLABELTYPE%xIsUnknown",
- (int)(labellen&0xc0));
- return w;
- }
-
- /* spool label characters, end with '.' */
- if(in_buf && *dlen < (size_t)labellen)
- labellen = (uint8_t)*dlen;
- else if(!in_buf && pos+(size_t)labellen > pkt+pktlen)
- labellen = (uint8_t)(pkt + pktlen - pos);
- for(i=0; i<(unsigned)labellen; i++) {
- w += dname_char_print(s, slen, *pos++);
- }
- if(in_buf) {
- (*d) += labellen;
- (*dlen) -= labellen;
- if(*dlen == 0) break;
- }
- w += sldns_str_print(s, slen, ".");
- }
- /* skip over final root label */
- if(in_buf && *dlen > 0) { (*d)++; (*dlen)--; }
- /* in case we printed no labels, terminate dname */
- if(w == 0) w += sldns_str_print(s, slen, ".");
- return w;
-}
-
-int sldns_wire2str_opcode_print(char** s, size_t* slen, int opcode)
-{
- sldns_lookup_table *lt = sldns_lookup_by_id(sldns_opcodes, opcode);
- if (lt && lt->name) {
- return sldns_str_print(s, slen, "%s", lt->name);
- }
- return sldns_str_print(s, slen, "OPCODE%u", (unsigned)opcode);
-}
-
-int sldns_wire2str_rcode_print(char** s, size_t* slen, int rcode)
-{
- sldns_lookup_table *lt = sldns_lookup_by_id(sldns_rcodes, rcode);
- if (lt && lt->name) {
- return sldns_str_print(s, slen, "%s", lt->name);
- }
- return sldns_str_print(s, slen, "RCODE%u", (unsigned)rcode);
-}
-
-int sldns_wire2str_class_print(char** s, size_t* slen, uint16_t rrclass)
-{
- sldns_lookup_table *lt = sldns_lookup_by_id(sldns_rr_classes,
- (int)rrclass);
- if (lt && lt->name) {
- return sldns_str_print(s, slen, "%s", lt->name);
- }
- return sldns_str_print(s, slen, "CLASS%u", (unsigned)rrclass);
-}
-
-int sldns_wire2str_type_print(char** s, size_t* slen, uint16_t rrtype)
-{
- const sldns_rr_descriptor *descriptor = sldns_rr_descript(rrtype);
- if (descriptor && descriptor->_name) {
- return sldns_str_print(s, slen, "%s", descriptor->_name);
- }
- return sldns_str_print(s, slen, "TYPE%u", (unsigned)rrtype);
-}
-
-int sldns_wire2str_edns_option_code_print(char** s, size_t* slen,
- uint16_t opcode)
-{
- sldns_lookup_table *lt = sldns_lookup_by_id(sldns_edns_options,
- (int)opcode);
- if (lt && lt->name) {
- return sldns_str_print(s, slen, "%s", lt->name);
- }
- return sldns_str_print(s, slen, "OPT%u", (unsigned)opcode);
-}
-
-int sldns_wire2str_class_scan(uint8_t** d, size_t* dlen, char** s, size_t* slen)
-{
- uint16_t c;
- if(*dlen == 0) return 0;
- if(*dlen < 2) return print_remainder_hex("Error malformed 0x", d, dlen, s, slen);
- c = sldns_read_uint16(*d);
- (*d)+=2;
- (*dlen)-=2;
- return sldns_wire2str_class_print(s, slen, c);
-}
-
-int sldns_wire2str_type_scan(uint8_t** d, size_t* dlen, char** s, size_t* slen)
-{
- uint16_t t;
- if(*dlen == 0) return 0;
- if(*dlen < 2) return print_remainder_hex("Error malformed 0x", d, dlen, s, slen);
- t = sldns_read_uint16(*d);
- (*d)+=2;
- (*dlen)-=2;
- return sldns_wire2str_type_print(s, slen, t);
-}
-
-int sldns_wire2str_ttl_scan(uint8_t** d, size_t* dlen, char** s, size_t* slen)
-{
- uint32_t ttl;
- if(*dlen == 0) return 0;
- if(*dlen < 4) return print_remainder_hex("Error malformed 0x", d, dlen, s, slen);
- ttl = sldns_read_uint32(*d);
- (*d)+=4;
- (*dlen)-=4;
- return sldns_str_print(s, slen, "%u", (unsigned)ttl);
-}
-
-int sldns_wire2str_rdf_scan(uint8_t** d, size_t* dlen, char** s, size_t* slen,
- int rdftype, uint8_t* pkt, size_t pktlen)
-{
- if(*dlen == 0) return 0;
- switch(rdftype) {
- case LDNS_RDF_TYPE_NONE:
- return 0;
- case LDNS_RDF_TYPE_DNAME:
- return sldns_wire2str_dname_scan(d, dlen, s, slen, pkt, pktlen);
- case LDNS_RDF_TYPE_INT8:
- return sldns_wire2str_int8_scan(d, dlen, s, slen);
- case LDNS_RDF_TYPE_INT16:
- return sldns_wire2str_int16_scan(d, dlen, s, slen);
- case LDNS_RDF_TYPE_INT32:
- return sldns_wire2str_int32_scan(d, dlen, s, slen);
- case LDNS_RDF_TYPE_PERIOD:
- return sldns_wire2str_period_scan(d, dlen, s, slen);
- case LDNS_RDF_TYPE_TSIGTIME:
- return sldns_wire2str_tsigtime_scan(d, dlen, s, slen);
- case LDNS_RDF_TYPE_A:
- return sldns_wire2str_a_scan(d, dlen, s, slen);
- case LDNS_RDF_TYPE_AAAA:
- return sldns_wire2str_aaaa_scan(d, dlen, s, slen);
- case LDNS_RDF_TYPE_STR:
- return sldns_wire2str_str_scan(d, dlen, s, slen);
- case LDNS_RDF_TYPE_APL:
- return sldns_wire2str_apl_scan(d, dlen, s, slen);
- case LDNS_RDF_TYPE_B32_EXT:
- return sldns_wire2str_b32_ext_scan(d, dlen, s, slen);
- case LDNS_RDF_TYPE_B64:
- return sldns_wire2str_b64_scan(d, dlen, s, slen);
- case LDNS_RDF_TYPE_HEX:
- return sldns_wire2str_hex_scan(d, dlen, s, slen);
- case LDNS_RDF_TYPE_NSEC:
- return sldns_wire2str_nsec_scan(d, dlen, s, slen);
- case LDNS_RDF_TYPE_NSEC3_SALT:
- return sldns_wire2str_nsec3_salt_scan(d, dlen, s, slen);
- case LDNS_RDF_TYPE_TYPE:
- return sldns_wire2str_type_scan(d, dlen, s, slen);
- case LDNS_RDF_TYPE_CLASS:
- return sldns_wire2str_class_scan(d, dlen, s, slen);
- case LDNS_RDF_TYPE_CERT_ALG:
- return sldns_wire2str_cert_alg_scan(d, dlen, s, slen);
- case LDNS_RDF_TYPE_ALG:
- return sldns_wire2str_alg_scan(d, dlen, s, slen);
- case LDNS_RDF_TYPE_UNKNOWN:
- return sldns_wire2str_unknown_scan(d, dlen, s, slen);
- case LDNS_RDF_TYPE_TIME:
- return sldns_wire2str_time_scan(d, dlen, s, slen);
- case LDNS_RDF_TYPE_LOC:
- return sldns_wire2str_loc_scan(d, dlen, s, slen);
- case LDNS_RDF_TYPE_WKS:
- case LDNS_RDF_TYPE_SERVICE:
- return sldns_wire2str_wks_scan(d, dlen, s, slen);
- case LDNS_RDF_TYPE_NSAP:
- return sldns_wire2str_nsap_scan(d, dlen, s, slen);
- case LDNS_RDF_TYPE_ATMA:
- return sldns_wire2str_atma_scan(d, dlen, s, slen);
- case LDNS_RDF_TYPE_IPSECKEY:
- return sldns_wire2str_ipseckey_scan(d, dlen, s, slen, pkt,
- pktlen);
- case LDNS_RDF_TYPE_HIP:
- return sldns_wire2str_hip_scan(d, dlen, s, slen);
- case LDNS_RDF_TYPE_INT16_DATA:
- return sldns_wire2str_int16_data_scan(d, dlen, s, slen);
- case LDNS_RDF_TYPE_NSEC3_NEXT_OWNER:
- return sldns_wire2str_b32_ext_scan(d, dlen, s, slen);
- case LDNS_RDF_TYPE_ILNP64:
- return sldns_wire2str_ilnp64_scan(d, dlen, s, slen);
- case LDNS_RDF_TYPE_EUI48:
- return sldns_wire2str_eui48_scan(d, dlen, s, slen);
- case LDNS_RDF_TYPE_EUI64:
- return sldns_wire2str_eui64_scan(d, dlen, s, slen);
- case LDNS_RDF_TYPE_TAG:
- return sldns_wire2str_tag_scan(d, dlen, s, slen);
- case LDNS_RDF_TYPE_LONG_STR:
- return sldns_wire2str_long_str_scan(d, dlen, s, slen);
- }
- /* unknown rdf type */
- return -1;
-}
-
-int sldns_wire2str_int8_scan(uint8_t** d, size_t* dl, char** s, size_t* sl)
-{
- int w;
- if(*dl < 1) return -1;
- w = sldns_str_print(s, sl, "%u", (unsigned)**d);
- (*d)++;
- (*dl)--;
- return w;
-}
-
-int sldns_wire2str_int16_scan(uint8_t** d, size_t* dl, char** s, size_t* sl)
-{
- int w;
- if(*dl < 2) return -1;
- w = sldns_str_print(s, sl, "%lu", (unsigned long)sldns_read_uint16(*d));
- (*d)+=2;
- (*dl)-=2;
- return w;
-}
-
-int sldns_wire2str_int32_scan(uint8_t** d, size_t* dl, char** s, size_t* sl)
-{
- int w;
- if(*dl < 4) return -1;
- w = sldns_str_print(s, sl, "%lu", (unsigned long)sldns_read_uint32(*d));
- (*d)+=4;
- (*dl)-=4;
- return w;
-}
-
-int sldns_wire2str_period_scan(uint8_t** d, size_t* dl, char** s, size_t* sl)
-{
- int w;
- if(*dl < 4) return -1;
- w = sldns_str_print(s, sl, "%u", (unsigned)sldns_read_uint32(*d));
- (*d)+=4;
- (*dl)-=4;
- return w;
-}
-
-int sldns_wire2str_tsigtime_scan(uint8_t** d, size_t* dl, char** s, size_t* sl)
-{
- /* tsigtime is 48 bits network order unsigned integer */
- int w;
- uint64_t tsigtime = 0;
- uint64_t d0, d1, d2, d3, d4, d5;
- if(*dl < 6) return -1;
- d0 = (*d)[0]; /* cast to uint64 for shift operations */
- d1 = (*d)[1];
- d2 = (*d)[2];
- d3 = (*d)[3];
- d4 = (*d)[4];
- d5 = (*d)[5];
- tsigtime = (d0<<40) | (d1<<32) | (d2<<24) | (d3<<16) | (d4<<8) | d5;
-#ifndef USE_WINSOCK
- w = sldns_str_print(s, sl, "%llu", (long long)tsigtime);
-#else
- w = sldns_str_print(s, sl, "%I64u", (long long)tsigtime);
-#endif
- (*d)+=6;
- (*dl)-=6;
- return w;
-}
-
-int sldns_wire2str_a_scan(uint8_t** d, size_t* dl, char** s, size_t* sl)
-{
- char buf[32];
- int w;
- if(*dl < 4) return -1;
- if(!inet_ntop(AF_INET, *d, buf, (socklen_t)sizeof(buf)))
- return -1;
- w = sldns_str_print(s, sl, "%s", buf);
- (*d)+=4;
- (*dl)-=4;
- return w;
-}
-
-int sldns_wire2str_aaaa_scan(uint8_t** d, size_t* dl, char** s, size_t* sl)
-{
-#ifdef AF_INET6
- char buf[64];
- int w;
- if(*dl < 16) return -1;
- if(!inet_ntop(AF_INET6, *d, buf, (socklen_t)sizeof(buf)))
- return -1;
- w = sldns_str_print(s, sl, "%s", buf);
- (*d)+=16;
- (*dl)-=16;
- return w;
-#else
- return -1;
-#endif
-}
-
-/** printout escaped TYPE_STR character */
-static int str_char_print(char** s, size_t* sl, uint8_t c)
-{
- if(isprint((unsigned char)c) || c == '\t') {
- if(c == '\"' || c == '\\')
- return sldns_str_print(s, sl, "\\%c", c);
- if(*sl) {
- **s = (char)c;
- (*s)++;
- (*sl)--;
- }
- return 1;
- }
- return sldns_str_print(s, sl, "\\%03u", (unsigned)c);
-}
-
-int sldns_wire2str_str_scan(uint8_t** d, size_t* dl, char** s, size_t* sl)
-{
- int w = 0;
- size_t i, len;
- if(*dl < 1) return -1;
- len = **d;
- if(*dl < 1+len) return -1;
- (*d)++;
- (*dl)--;
- w += sldns_str_print(s, sl, "\"");
- for(i=0; i<len; i++)
- w += str_char_print(s, sl, (*d)[i]);
- w += sldns_str_print(s, sl, "\"");
- (*d)+=len;
- (*dl)-=len;
- return w;
-}
-
-int sldns_wire2str_apl_scan(uint8_t** d, size_t* dl, char** s, size_t* sl)
-{
- int i, w = 0;
- uint16_t family;
- uint8_t negation, prefix, adflength;
- if(*dl < 4) return -1;
- family = sldns_read_uint16(*d);
- prefix = (*d)[2];
- negation = ((*d)[3] & LDNS_APL_NEGATION);
- adflength = ((*d)[3] & LDNS_APL_MASK);
- if(*dl < 4+(size_t)adflength) return -1;
- if(family != LDNS_APL_IP4 && family != LDNS_APL_IP6)
- return -1; /* unknown address family */
- if(negation)
- w += sldns_str_print(s, sl, "!");
- w += sldns_str_print(s, sl, "%u:", (unsigned)family);
- if(family == LDNS_APL_IP4) {
- /* check if prefix <32 ? */
- /* address is variable length 0 - 4 */
- for(i=0; i<4; i++) {
- if(i > 0)
- w += sldns_str_print(s, sl, ".");
- if(i < (int)adflength)
- w += sldns_str_print(s, sl, "%d", (*d)[4+i]);
- else w += sldns_str_print(s, sl, "0");
- }
- } else if(family == LDNS_APL_IP6) {
- /* check if prefix <128 ? */
- /* address is variable length 0 - 16 */
- for(i=0; i<16; i++) {
- if(i%2 == 0 && i>0)
- w += sldns_str_print(s, sl, ":");
- if(i < (int)adflength)
- w += sldns_str_print(s, sl, "%02x", (*d)[4+i]);
- else w += sldns_str_print(s, sl, "00");
- }
- }
- w += sldns_str_print(s, sl, "/%u", (unsigned)prefix);
- (*d) += 4+adflength;
- (*dl) -= 4+adflength;
- return w;
-}
-
-int sldns_wire2str_b32_ext_scan(uint8_t** d, size_t* dl, char** s, size_t* sl)
-{
- size_t datalen;
- size_t sz;
- if(*dl < 1) return -1;
- datalen = (*d)[0];
- if(*dl < 1+datalen) return -1;
- sz = sldns_b32_ntop_calculate_size(datalen);
- if(*sl < sz+1) {
- (*d) += datalen+1;
- (*dl) -= (datalen+1);
- return (int)sz; /* out of space really, but would need buffer
- in order to truncate the output */
- }
- sldns_b32_ntop_extended_hex((*d)+1, datalen, *s, *sl);
- (*d) += datalen+1;
- (*dl) -= (datalen+1);
- (*s) += sz;
- (*sl) -= sz;
- return (int)sz;
-}
-
-/** scan number of bytes from wire into b64 presentation format */
-static int sldns_wire2str_b64_scan_num(uint8_t** d, size_t* dl, char** s,
- size_t* sl, size_t num)
-{
- /* b64_ntop_calculate size includes null at the end */
- size_t sz = sldns_b64_ntop_calculate_size(num)-1;
- if(*sl < sz+1) {
- (*d) += num;
- (*dl) -= num;
- return (int)sz; /* out of space really, but would need buffer
- in order to truncate the output */
- }
- sldns_b64_ntop(*d, num, *s, *sl);
- (*d) += num;
- (*dl) -= num;
- (*s) += sz;
- (*sl) -= sz;
- return (int)sz;
-}
-
-int sldns_wire2str_b64_scan(uint8_t** d, size_t* dl, char** s, size_t* sl)
-{
- return sldns_wire2str_b64_scan_num(d, dl, s, sl, *dl);
-}
-
-int sldns_wire2str_hex_scan(uint8_t** d, size_t* dl, char** s, size_t* sl)
-{
- return print_remainder_hex("", d, dl, s, sl);
-}
-
-int sldns_wire2str_nsec_scan(uint8_t** d, size_t* dl, char** s, size_t* sl)
-{
- uint8_t* p = *d;
- size_t pl = *dl;
- unsigned i, bit, window, block_len;
- uint16_t t;
- int w = 0;
-
- /* check for errors */
- while(pl) {
- if(pl < 2) return -1;
- block_len = (unsigned)p[1];
- if(pl < 2+block_len) return -1;
- p += block_len+2;
- pl -= block_len+2;
- }
-
- /* do it */
- p = *d;
- pl = *dl;
- while(pl) {
- if(pl < 2) return -1; /* cannot happen */
- window = (unsigned)p[0];
- block_len = (unsigned)p[1];
- if(pl < 2+block_len) return -1; /* cannot happen */
- p += 2;
- for(i=0; i<block_len; i++) {
- if(p[i] == 0) continue;
- /* base type number for this octet */
- t = ((window)<<8) | (i << 3);
- for(bit=0; bit<8; bit++) {
- if((p[i]&(0x80>>bit))) {
- if(w) w += sldns_str_print(s, sl, " ");
- w += sldns_wire2str_type_print(s, sl,
- t+bit);
- }
- }
- }
- p += block_len;
- pl -= block_len+2;
- }
- (*d) += *dl;
- (*dl) = 0;
- return w;
-}
-
-int sldns_wire2str_nsec3_salt_scan(uint8_t** d, size_t* dl, char** s, size_t* sl)
-{
- size_t salt_len;
- int w;
- if(*dl < 1) return -1;
- salt_len = (size_t)(*d)[0];
- if(*dl < 1+salt_len) return -1;
- (*d)++;
- (*dl)--;
- if(salt_len == 0) {
- return sldns_str_print(s, sl, "-");
- }
- w = print_hex_buf(s, sl, *d, salt_len);
- (*dl)-=salt_len;
- (*d)+=salt_len;
- return w;
-}
-
-int sldns_wire2str_cert_alg_scan(uint8_t** d, size_t* dl, char** s, size_t* sl)
-{
- sldns_lookup_table *lt;
- int data, w;
- if(*dl < 2) return -1;
- data = (int)sldns_read_uint16(*d);
- lt = sldns_lookup_by_id(sldns_cert_algorithms, data);
- if(lt && lt->name)
- w = sldns_str_print(s, sl, "%s", lt->name);
- else w = sldns_str_print(s, sl, "%d", data);
- (*dl)-=2;
- (*d)+=2;
- return w;
-}
-
-int sldns_wire2str_alg_scan(uint8_t** d, size_t* dl, char** s, size_t* sl)
-{
- /* don't use algorithm mnemonics in the presentation format
- * this kind of got sneaked into the rfc's */
- return sldns_wire2str_int8_scan(d, dl, s, sl);
-}
-
-int sldns_wire2str_unknown_scan(uint8_t** d, size_t* dl, char** s, size_t* sl)
-{
- return sldns_wire2str_rdata_unknown_scan(d, dl, s, sl);
-}
-
-int sldns_wire2str_time_scan(uint8_t** d, size_t* dl, char** s, size_t* sl)
-{
- /* create a YYYYMMDDHHMMSS string if possible */
- struct tm tm;
- char date_buf[16];
- uint32_t t;
- memset(&tm, 0, sizeof(tm));
- if(*dl < 4) return -1;
- t = sldns_read_uint32(*d);
- date_buf[15]=0;
- if(sldns_serial_arithmitics_gmtime_r(t, time(NULL), &tm) &&
- strftime(date_buf, 15, "%Y%m%d%H%M%S", &tm)) {
- (*d) += 4;
- (*dl) -= 4;
- return sldns_str_print(s, sl, "%s", date_buf);
- }
- return -1;
-}
-
-static int
-loc_cm_print(char** str, size_t* sl, uint8_t mantissa, uint8_t exponent)
-{
- int w = 0;
- uint8_t i;
- /* is it 0.<two digits> ? */
- if(exponent < 2) {
- if(exponent == 1)
- mantissa *= 10;
- return sldns_str_print(str, sl, "0.%02ld", (long)mantissa);
- }
- /* always <digit><string of zeros> */
- w += sldns_str_print(str, sl, "%d", (int)mantissa);
- for(i=0; i<exponent-2; i++)
- w += sldns_str_print(str, sl, "0");
- return w;
-}
-
-int sldns_wire2str_loc_scan(uint8_t** d, size_t* dl, char** str, size_t* sl)
-{
- /* we could do checking (ie degrees < 90 etc)? */
- uint8_t version;
- uint8_t size;
- uint8_t horizontal_precision;
- uint8_t vertical_precision;
- uint32_t longitude;
- uint32_t latitude;
- uint32_t altitude;
- char northerness;
- char easterness;
- uint32_t h;
- uint32_t m;
- double s;
- uint32_t equator = (uint32_t)1 << 31; /* 2**31 */
- int w = 0;
-
- if(*dl < 16) return -1;
- version = (*d)[0];
- if(version != 0)
- return sldns_wire2str_hex_scan(d, dl, str, sl);
- size = (*d)[1];
- horizontal_precision = (*d)[2];
- vertical_precision = (*d)[3];
-
- latitude = sldns_read_uint32((*d)+4);
- longitude = sldns_read_uint32((*d)+8);
- altitude = sldns_read_uint32((*d)+12);
-
- if (latitude > equator) {
- northerness = 'N';
- latitude = latitude - equator;
- } else {
- northerness = 'S';
- latitude = equator - latitude;
- }
- h = latitude / (1000 * 60 * 60);
- latitude = latitude % (1000 * 60 * 60);
- m = latitude / (1000 * 60);
- latitude = latitude % (1000 * 60);
- s = (double) latitude / 1000.0;
- w += sldns_str_print(str, sl, "%02u %02u %06.3f %c ",
- h, m, s, northerness);
-
- if (longitude > equator) {
- easterness = 'E';
- longitude = longitude - equator;
- } else {
- easterness = 'W';
- longitude = equator - longitude;
- }
- h = longitude / (1000 * 60 * 60);
- longitude = longitude % (1000 * 60 * 60);
- m = longitude / (1000 * 60);
- longitude = longitude % (1000 * 60);
- s = (double) longitude / (1000.0);
- w += sldns_str_print(str, sl, "%02u %02u %06.3f %c ",
- h, m, s, easterness);
-
- s = ((double) altitude) / 100;
- s -= 100000;
-
- if(altitude%100 != 0)
- w += sldns_str_print(str, sl, "%.2f", s);
- else
- w += sldns_str_print(str, sl, "%.0f", s);
-
- w += sldns_str_print(str, sl, "m ");
-
- w += loc_cm_print(str, sl, (size & 0xf0) >> 4, size & 0x0f);
- w += sldns_str_print(str, sl, "m ");
-
- w += loc_cm_print(str, sl, (horizontal_precision & 0xf0) >> 4,
- horizontal_precision & 0x0f);
- w += sldns_str_print(str, sl, "m ");
-
- w += loc_cm_print(str, sl, (vertical_precision & 0xf0) >> 4,
- vertical_precision & 0x0f);
- w += sldns_str_print(str, sl, "m");
-
- (*d)+=16;
- (*dl)-=16;
- return w;
-}
-
-int sldns_wire2str_wks_scan(uint8_t** d, size_t* dl, char** s, size_t* sl)
-{
- /* protocol, followed by bitmap of services */
- const char* proto_name = NULL;
- struct protoent *protocol;
- struct servent *service;
- uint8_t protocol_nr;
- int bit, port, w = 0;
- size_t i;
- /* we cannot print with strings because they
- * are not portable, the presentation format may
- * not be able to be read in on another computer. */
- int print_symbols = 0;
-
- /* protocol */
- if(*dl < 1) return -1;
- protocol_nr = (*d)[0];
- (*d)++;
- (*dl)--;
- protocol = getprotobynumber((int)protocol_nr);
- if(protocol && (protocol->p_name != NULL)) {
- w += sldns_str_print(s, sl, "%s", protocol->p_name);
- proto_name = protocol->p_name;
- } else {
- w += sldns_str_print(s, sl, "%u", (unsigned)protocol_nr);
- }
-
- for(i=0; i<*dl; i++) {
- if((*d)[i] == 0)
- continue;
- for(bit=0; bit<8; bit++) {
- if(!(((*d)[i])&(0x80>>bit)))
- continue;
- port = (int)i*8 + bit;
-
- if(!print_symbols)
- service = NULL;
- else
- service = getservbyport(
- (int)htons((uint16_t)port), proto_name);
- if(service && service->s_name)
- w += sldns_str_print(s, sl, " %s",
- service->s_name);
- else w += sldns_str_print(s, sl, " %u",
- (unsigned)port);
- }
- }
-
-#ifdef HAVE_ENDSERVENT
- endservent();
-#endif
-#ifdef HAVE_ENDPROTOENT
- endprotoent();
-#endif
- (*d) += *dl;
- (*dl) = 0;
- return w;
-}
-
-int sldns_wire2str_nsap_scan(uint8_t** d, size_t* dl, char** s, size_t* sl)
-{
- return print_remainder_hex("0x", d, dl, s, sl);
-}
-
-int sldns_wire2str_atma_scan(uint8_t** d, size_t* dl, char** s, size_t* sl)
-{
- return print_remainder_hex("", d, dl, s, sl);
-}
-
-/* internal scan routine that can modify arguments on failure */
-static int sldns_wire2str_ipseckey_scan_internal(uint8_t** d, size_t* dl,
- char** s, size_t* sl, uint8_t* pkt, size_t pktlen)
-{
- /* http://www.ietf.org/internet-drafts/draft-ietf-ipseckey-rr-12.txt*/
- uint8_t precedence, gateway_type, algorithm;
- int w = 0;
-
- if(*dl < 3) return -1;
- precedence = (*d)[0];
- gateway_type = (*d)[1];
- algorithm = (*d)[2];
- if(gateway_type > 3)
- return -1; /* unknown */
- (*d)+=3;
- (*dl)-=3;
- w += sldns_str_print(s, sl, "%d %d %d ",
- (int)precedence, (int)gateway_type, (int)algorithm);
-
- switch(gateway_type) {
- case 0: /* no gateway */
- w += sldns_str_print(s, sl, ".");
- break;
- case 1: /* ip4 */
- w += sldns_wire2str_a_scan(d, dl, s, sl);
- break;
- case 2: /* ip6 */
- w += sldns_wire2str_aaaa_scan(d, dl, s, sl);
- break;
- case 3: /* dname */
- w += sldns_wire2str_dname_scan(d, dl, s, sl, pkt, pktlen);
- break;
- default: /* unknown */
- return -1;
- }
-
- if(*dl < 1)
- return -1;
- w += sldns_str_print(s, sl, " ");
- w += sldns_wire2str_b64_scan_num(d, dl, s, sl, *dl);
- return w;
-}
-
-int sldns_wire2str_ipseckey_scan(uint8_t** d, size_t* dl, char** s, size_t* sl,
- uint8_t* pkt, size_t pktlen)
-{
- uint8_t* od = *d;
- char* os = *s;
- size_t odl = *dl, osl = *sl;
- int w=sldns_wire2str_ipseckey_scan_internal(d, dl, s, sl, pkt, pktlen);
- if(w == -1) {
- *d = od;
- *s = os;
- *dl = odl;
- *sl = osl;
- return -1;
- }
- return w;
-}
-
-int sldns_wire2str_hip_scan(uint8_t** d, size_t* dl, char** s, size_t* sl)
-{
- int w;
- uint8_t algo, hitlen;
- uint16_t pklen;
-
- /* read lengths */
- if(*dl < 4)
- return -1;
- hitlen = (*d)[0];
- algo = (*d)[1];
- pklen = sldns_read_uint16((*d)+2);
- if(*dl < (size_t)4 + (size_t)hitlen + (size_t)pklen)
- return -1;
-
- /* write: algo hit pubkey */
- w = sldns_str_print(s, sl, "%u ", (unsigned)algo);
- w += print_hex_buf(s, sl, (*d)+4, hitlen);
- w += sldns_str_print(s, sl, " ");
- (*d)+=4+hitlen;
- (*dl)-= (4+hitlen);
- w += sldns_wire2str_b64_scan_num(d, dl, s, sl, pklen);
- return w;
-}
-
-int sldns_wire2str_int16_data_scan(uint8_t** d, size_t* dl, char** s, size_t* sl)
-{
- uint16_t n;
- if(*dl < 2)
- return -1;
- n = sldns_read_uint16(*d);
- if(*dl < 2+(size_t)n)
- return -1;
- (*d)+=2;
- (*dl)-=2;
- return sldns_wire2str_b64_scan_num(d, dl, s, sl, n);
-}
-
-int sldns_wire2str_nsec3_next_owner_scan(uint8_t** d, size_t* dl, char** s,
- size_t* sl)
-{
- return sldns_wire2str_b32_ext_scan(d, dl, s, sl);
-}
-
-int sldns_wire2str_ilnp64_scan(uint8_t** d, size_t* dl, char** s, size_t* sl)
-{
- int w;
- if(*dl < 8)
- return -1;
- w = sldns_str_print(s, sl, "%.4x:%.4x:%.4x:%.4x",
- sldns_read_uint16(*d), sldns_read_uint16((*d)+2),
- sldns_read_uint16((*d)+4), sldns_read_uint16((*d)+6));
- (*d)+=8;
- (*dl)-=8;
- return w;
-}
-
-int sldns_wire2str_eui48_scan(uint8_t** d, size_t* dl, char** s, size_t* sl)
-{
- int w;
- if(*dl < 6)
- return -1;
- w = sldns_str_print(s, sl, "%.2x-%.2x-%.2x-%.2x-%.2x-%.2x",
- (*d)[0], (*d)[1], (*d)[2], (*d)[3], (*d)[4], (*d)[5]);
- (*d)+=6;
- (*dl)-=6;
- return w;
-}
-
-int sldns_wire2str_eui64_scan(uint8_t** d, size_t* dl, char** s, size_t* sl)
-{
- int w;
- if(*dl < 8)
- return -1;
- w = sldns_str_print(s, sl, "%.2x-%.2x-%.2x-%.2x-%.2x-%.2x-%.2x-%.2x",
- (*d)[0], (*d)[1], (*d)[2], (*d)[3], (*d)[4], (*d)[5],
- (*d)[6], (*d)[7]);
- (*d)+=8;
- (*dl)-=8;
- return w;
-}
-
-int sldns_wire2str_tag_scan(uint8_t** d, size_t* dl, char** s, size_t* sl)
-{
- size_t i, n;
- int w = 0;
- if(*dl < 1)
- return -1;
- n = (size_t)((*d)[0]);
- if(*dl < 1+n)
- return -1;
- for(i=0; i<n; i++)
- if(!isalnum((unsigned char)(*d)[i]))
- return -1;
- for(i=0; i<n; i++)
- w += sldns_str_print(s, sl, "%c", (char)(*d)[i]);
- (*d)+=n+1;
- (*dl)-=(n+1);
- return w;
-}
-
-int sldns_wire2str_long_str_scan(uint8_t** d, size_t* dl, char** s, size_t* sl)
-{
- size_t i;
- int w = 0;
- w += sldns_str_print(s, sl, "\"");
- for(i=0; i<*dl; i++)
- w += str_char_print(s, sl, (*d)[i]);
- w += sldns_str_print(s, sl, "\"");
- (*d)+=*dl;
- (*dl)=0;
- return w;
-}
-
-int sldns_wire2str_edns_llq_print(char** s, size_t* sl, uint8_t* data,
- size_t len)
-{
- /* LLQ constants */
- const char* llq_errors[] = {"NO-ERROR", "SERV-FULL", "STATIC",
- "FORMAT-ERR", "NO-SUCH-LLQ", "BAD-VERS", "UNKNOWN_ERR"};
- const unsigned int llq_errors_num = 7;
- const char* llq_opcodes[] = {"LLQ-SETUP", "LLQ-REFRESH", "LLQ-EVENT"};
- const unsigned int llq_opcodes_num = 3;
- uint16_t version, llq_opcode, error_code;
- uint64_t llq_id;
- uint32_t lease_life; /* Requested or granted life of LLQ, in seconds */
- int w = 0;
-
- /* read the record */
- if(len != 18) {
- w += sldns_str_print(s, sl, "malformed LLQ ");
- w += print_hex_buf(s, sl, data, len);
- return w;
- }
- version = sldns_read_uint16(data);
- llq_opcode = sldns_read_uint16(data+2);
- error_code = sldns_read_uint16(data+4);
- memmove(&llq_id, data+6, sizeof(llq_id));
- lease_life = sldns_read_uint32(data+14);
-
- /* print it */
- w += sldns_str_print(s, sl, "v%d ", (int)version);
- if(llq_opcode < llq_opcodes_num)
- w += sldns_str_print(s, sl, "%s", llq_opcodes[llq_opcode]);
- else w += sldns_str_print(s, sl, "opcode %d", (int)llq_opcode);
- if(error_code < llq_errors_num)
- w += sldns_str_print(s, sl, " %s", llq_errors[error_code]);
- else w += sldns_str_print(s, sl, " error %d", (int)error_code);
-#ifndef USE_WINSOCK
- w += sldns_str_print(s, sl, " id %llx lease-life %lu",
- (unsigned long long)llq_id, (unsigned long)lease_life);
-#else
- w += sldns_str_print(s, sl, " id %I64x lease-life %lu",
- (unsigned long long)llq_id, (unsigned long)lease_life);
-#endif
- return w;
-}
-
-int sldns_wire2str_edns_ul_print(char** s, size_t* sl, uint8_t* data,
- size_t len)
-{
- uint32_t lease;
- int w = 0;
- if(len != 4) {
- w += sldns_str_print(s, sl, "malformed UL ");
- w += print_hex_buf(s, sl, data, len);
- return w;
- }
- lease = sldns_read_uint32(data);
- w += sldns_str_print(s, sl, "lease %lu", (unsigned long)lease);
- return w;
-}
-
-int sldns_wire2str_edns_nsid_print(char** s, size_t* sl, uint8_t* data,
- size_t len)
-{
- int w = 0;
- size_t i, printed=0;
- w += print_hex_buf(s, sl, data, len);
- for(i=0; i<len; i++) {
- if(isprint((unsigned char)data[i]) || data[i] == '\t') {
- if(!printed) {
- w += sldns_str_print(s, sl, " (");
- printed = 1;
- }
- w += sldns_str_print(s, sl, "%c", (char)data[i]);
- }
- }
- if(printed)
- w += sldns_str_print(s, sl, ")");
- return w;
-}
-
-int sldns_wire2str_edns_dau_print(char** s, size_t* sl, uint8_t* data,
- size_t len)
-{
- sldns_lookup_table *lt;
- size_t i;
- int w = 0;
- for(i=0; i<len; i++) {
- lt = sldns_lookup_by_id(sldns_algorithms, (int)data[i]);
- if(lt && lt->name)
- w += sldns_str_print(s, sl, " %s", lt->name);
- else w += sldns_str_print(s, sl, " %d", (int)data[i]);
- }
- return w;
-}
-
-int sldns_wire2str_edns_dhu_print(char** s, size_t* sl, uint8_t* data,
- size_t len)
-{
- sldns_lookup_table *lt;
- size_t i;
- int w = 0;
- for(i=0; i<len; i++) {
- lt = sldns_lookup_by_id(sldns_hashes, (int)data[i]);
- if(lt && lt->name)
- w += sldns_str_print(s, sl, " %s", lt->name);
- else w += sldns_str_print(s, sl, " %d", (int)data[i]);
- }
- return w;
-}
-
-int sldns_wire2str_edns_n3u_print(char** s, size_t* sl, uint8_t* data,
- size_t len)
-{
- size_t i;
- int w = 0;
- for(i=0; i<len; i++) {
- if(data[i] == 1)
- w += sldns_str_print(s, sl, " SHA1");
- else w += sldns_str_print(s, sl, " %d", (int)data[i]);
- }
- return w;
-}
-
-int sldns_wire2str_edns_subnet_print(char** s, size_t* sl, uint8_t* data,
- size_t len)
-{
- int w = 0;
- uint16_t family;
- uint8_t source, scope;
- if(len < 4) {
- w += sldns_str_print(s, sl, "malformed subnet ");
- w += print_hex_buf(s, sl, data, len);
- return w;
- }
- family = sldns_read_uint16(data);
- source = data[2];
- scope = data[3];
- if(family == 1) {
- /* IP4 */
- char buf[64];
- uint8_t ip4[4];
- memset(ip4, 0, sizeof(ip4));
- if(len-4 > 4) {
- w += sldns_str_print(s, sl, "trailingdata:");
- w += print_hex_buf(s, sl, data+4+4, len-4-4);
- w += sldns_str_print(s, sl, " ");
- len = 4+4;
- }
- memmove(ip4, data+4, len-4);
- if(!inet_ntop(AF_INET, ip4, buf, (socklen_t)sizeof(buf))) {
- w += sldns_str_print(s, sl, "ip4ntoperror ");
- w += print_hex_buf(s, sl, data+4+4, len-4-4);
- } else {
- w += sldns_str_print(s, sl, "%s", buf);
- }
- } else if(family == 2) {
- /* IP6 */
- char buf[64];
- uint8_t ip6[16];
- memset(ip6, 0, sizeof(ip6));
- if(len-4 > 16) {
- w += sldns_str_print(s, sl, "trailingdata:");
- w += print_hex_buf(s, sl, data+4+16, len-4-16);
- w += sldns_str_print(s, sl, " ");
- len = 4+16;
- }
- memmove(ip6, data+4, len-4);
-#ifdef AF_INET6
- if(!inet_ntop(AF_INET6, ip6, buf, (socklen_t)sizeof(buf))) {
- w += sldns_str_print(s, sl, "ip6ntoperror ");
- w += print_hex_buf(s, sl, data+4+4, len-4-4);
- } else {
- w += sldns_str_print(s, sl, "%s", buf);
- }
-#else
- w += print_hex_buf(s, sl, data+4+4, len-4-4);
-#endif
- } else {
- /* unknown */
- w += sldns_str_print(s, sl, "family %d ",
- (int)family);
- w += print_hex_buf(s, sl, data, len);
- }
- w += sldns_str_print(s, sl, "/%d scope /%d", (int)source, (int)scope);
- return w;
-}
-
-int sldns_wire2str_edns_keepalive_print(char** s, size_t* sl, uint8_t* data,
- size_t len)
-{
- int w = 0;
- uint16_t timeout;
- if(!(len == 0 || len == 2)) {
- w += sldns_str_print(s, sl, "malformed keepalive ");
- w += print_hex_buf(s, sl, data, len);
- return w;
- }
- if(len == 0 ) {
- w += sldns_str_print(s, sl, "no timeout value (only valid for client option) ");
- } else {
- timeout = sldns_read_uint16(data);
- w += sldns_str_print(s, sl, "timeout value in units of 100ms %u", (int)timeout);
- }
- return w;
-}
-
-int sldns_wire2str_edns_option_print(char** s, size_t* sl,
- uint16_t option_code, uint8_t* optdata, size_t optlen)
-{
- int w = 0;
- w += sldns_wire2str_edns_option_code_print(s, sl, option_code);
- w += sldns_str_print(s, sl, ": ");
- switch(option_code) {
- case LDNS_EDNS_LLQ:
- w += sldns_wire2str_edns_llq_print(s, sl, optdata, optlen);
- break;
- case LDNS_EDNS_UL:
- w += sldns_wire2str_edns_ul_print(s, sl, optdata, optlen);
- break;
- case LDNS_EDNS_NSID:
- w += sldns_wire2str_edns_nsid_print(s, sl, optdata, optlen);
- break;
- case LDNS_EDNS_DAU:
- w += sldns_wire2str_edns_dau_print(s, sl, optdata, optlen);
- break;
- case LDNS_EDNS_DHU:
- w += sldns_wire2str_edns_dhu_print(s, sl, optdata, optlen);
- break;
- case LDNS_EDNS_N3U:
- w += sldns_wire2str_edns_n3u_print(s, sl, optdata, optlen);
- break;
- case LDNS_EDNS_CLIENT_SUBNET:
- w += sldns_wire2str_edns_subnet_print(s, sl, optdata, optlen);
- break;
- case LDNS_EDNS_KEEPALIVE:
- w += sldns_wire2str_edns_keepalive_print(s, sl, optdata, optlen);
- break;
- case LDNS_EDNS_PADDING:
- w += print_hex_buf(s, sl, optdata, optlen);
- break;
- default:
- /* unknown option code */
- w += print_hex_buf(s, sl, optdata, optlen);
- break;
- }
- return w;
-}
-
-/** print the edns options to string */
-static int
-print_edns_opts(char** s, size_t* sl, uint8_t* rdata, size_t rdatalen)
-{
- uint16_t option_code, option_len;
- int w = 0;
- while(rdatalen > 0) {
- /* option name */
- if(rdatalen < 4) {
- w += sldns_str_print(s, sl, " ; malformed: ");
- w += print_hex_buf(s, sl, rdata, rdatalen);
- return w;
- }
- option_code = sldns_read_uint16(rdata);
- option_len = sldns_read_uint16(rdata+2);
- rdata += 4;
- rdatalen -= 4;
-
- /* option value */
- if(rdatalen < (size_t)option_len) {
- w += sldns_str_print(s, sl, " ; malformed ");
- w += sldns_wire2str_edns_option_code_print(s, sl,
- option_code);
- w += sldns_str_print(s, sl, ": ");
- w += print_hex_buf(s, sl, rdata, rdatalen);
- return w;
- }
- w += sldns_str_print(s, sl, " ; ");
- w += sldns_wire2str_edns_option_print(s, sl, option_code,
- rdata, option_len);
- rdata += option_len;
- rdatalen -= option_len;
- }
- return w;
-}
-
-int sldns_wire2str_edns_scan(uint8_t** data, size_t* data_len, char** str,
- size_t* str_len, uint8_t* pkt, size_t pktlen)
-{
- int w = 0;
- uint8_t ext_rcode, edns_version;
- uint16_t udpsize, edns_bits, rdatalen;
- w += sldns_str_print(str, str_len, "; EDNS:");
-
- /* some input checks, domain name */
- if(*data_len < 1+10)
- return w + print_remainder_hex("Error malformed 0x",
- data, data_len, str, str_len);
- if(*data[0] != 0) {
- return w + print_remainder_hex("Error nonrootdname 0x",
- data, data_len, str, str_len);
- }
- (*data)++;
- (*data_len)--;
-
- /* check type and read fixed contents */
- if(sldns_read_uint16((*data)) != LDNS_RR_TYPE_OPT) {
- return w + print_remainder_hex("Error nottypeOPT 0x",
- data, data_len, str, str_len);
- }
- udpsize = sldns_read_uint16((*data)+2);
- ext_rcode = (*data)[4];
- edns_version = (*data)[5];
- edns_bits = sldns_read_uint16((*data)+6);
- rdatalen = sldns_read_uint16((*data)+8);
- (*data)+=10;
- (*data_len)-=10;
-
- w += sldns_str_print(str, str_len, " version: %u;",
- (unsigned)edns_version);
- w += sldns_str_print(str, str_len, " flags:");
- if((edns_bits & LDNS_EDNS_MASK_DO_BIT))
- w += sldns_str_print(str, str_len, " do");
- /* the extended rcode is the value set, shifted four bits,
- * and or'd with the original rcode */
- if(ext_rcode) {
- int rc = ((int)ext_rcode)<<4;
- if(pkt && pktlen >= LDNS_HEADER_SIZE)
- rc |= LDNS_RCODE_WIRE(pkt);
- w += sldns_str_print(str, str_len, " ; ext-rcode: %d", rc);
- }
- w += sldns_str_print(str, str_len, " ; udp: %u", (unsigned)udpsize);
-
- if(rdatalen) {
- if((size_t)*data_len < rdatalen) {
- w += sldns_str_print(str, str_len,
- " ; Error EDNS rdata too short; ");
- rdatalen = (uint16_t)*data_len;
- }
- w += print_edns_opts(str, str_len, *data, rdatalen);
- (*data) += rdatalen;
- (*data_len) -= rdatalen;
- }
- w += sldns_str_print(str, str_len, "\n");
- return w;
-}