4 * conversion routines from the wire format
5 * to the presentation format (strings)
7 * (c) NLnet Labs, 2004-2006
9 * See the file LICENSE for the license
14 * Contains functions to translate the wireformat to text
15 * representation, as well as functions to print them.
18 #include "sldns/wire2str.h"
19 #include "sldns/str2wire.h"
20 #include "sldns/rrdef.h"
21 #include "sldns/pkthdr.h"
22 #include "sldns/parseutil.h"
23 #include "sldns/sbuffer.h"
24 #include "sldns/keyraw.h"
35 /* lookup tables for standard DNS stuff */
36 /* Taken from RFC 2535, section 7. */
37 static sldns_lookup_table sldns_algorithms_data[] = {
38 { LDNS_RSAMD5, "RSAMD5" },
42 { LDNS_RSASHA1, "RSASHA1" },
43 { LDNS_DSA_NSEC3, "DSA-NSEC3-SHA1" },
44 { LDNS_RSASHA1_NSEC3, "RSASHA1-NSEC3-SHA1" },
45 { LDNS_RSASHA256, "RSASHA256"},
46 { LDNS_RSASHA512, "RSASHA512"},
47 { LDNS_ECC_GOST, "ECC-GOST"},
48 { LDNS_ECDSAP256SHA256, "ECDSAP256SHA256"},
49 { LDNS_ECDSAP384SHA384, "ECDSAP384SHA384"},
50 { LDNS_ED25519, "ED25519"},
51 { LDNS_ED448, "ED448"},
52 { LDNS_INDIRECT, "INDIRECT" },
53 { LDNS_PRIVATEDNS, "PRIVATEDNS" },
54 { LDNS_PRIVATEOID, "PRIVATEOID" },
57 sldns_lookup_table* sldns_algorithms = sldns_algorithms_data;
59 /* hash algorithms in DS record */
60 static sldns_lookup_table sldns_hashes_data[] = {
61 { LDNS_SHA1, "SHA1" },
62 { LDNS_SHA256, "SHA256" },
63 { LDNS_HASH_GOST, "HASH-GOST" },
64 { LDNS_SHA384, "SHA384" },
67 sldns_lookup_table* sldns_hashes = sldns_hashes_data;
69 /* Taken from RFC 4398 */
70 static sldns_lookup_table sldns_cert_algorithms_data[] = {
71 { LDNS_CERT_PKIX, "PKIX" },
72 { LDNS_CERT_SPKI, "SPKI" },
73 { LDNS_CERT_PGP, "PGP" },
74 { LDNS_CERT_IPKIX, "IPKIX" },
75 { LDNS_CERT_ISPKI, "ISPKI" },
76 { LDNS_CERT_IPGP, "IPGP" },
77 { LDNS_CERT_ACPKIX, "ACPKIX" },
78 { LDNS_CERT_IACPKIX, "IACPKIX" },
79 { LDNS_CERT_URI, "URI" },
80 { LDNS_CERT_OID, "OID" },
83 sldns_lookup_table* sldns_cert_algorithms = sldns_cert_algorithms_data;
85 /* if these are used elsewhere */
86 static sldns_lookup_table sldns_rcodes_data[] = {
87 { LDNS_RCODE_NOERROR, "NOERROR" },
88 { LDNS_RCODE_FORMERR, "FORMERR" },
89 { LDNS_RCODE_SERVFAIL, "SERVFAIL" },
90 { LDNS_RCODE_NXDOMAIN, "NXDOMAIN" },
91 { LDNS_RCODE_NOTIMPL, "NOTIMPL" },
92 { LDNS_RCODE_REFUSED, "REFUSED" },
93 { LDNS_RCODE_YXDOMAIN, "YXDOMAIN" },
94 { LDNS_RCODE_YXRRSET, "YXRRSET" },
95 { LDNS_RCODE_NXRRSET, "NXRRSET" },
96 { LDNS_RCODE_NOTAUTH, "NOTAUTH" },
97 { LDNS_RCODE_NOTZONE, "NOTZONE" },
100 sldns_lookup_table* sldns_rcodes = sldns_rcodes_data;
102 static sldns_lookup_table sldns_opcodes_data[] = {
103 { LDNS_PACKET_QUERY, "QUERY" },
104 { LDNS_PACKET_IQUERY, "IQUERY" },
105 { LDNS_PACKET_STATUS, "STATUS" },
106 { LDNS_PACKET_NOTIFY, "NOTIFY" },
107 { LDNS_PACKET_UPDATE, "UPDATE" },
110 sldns_lookup_table* sldns_opcodes = sldns_opcodes_data;
112 static sldns_lookup_table sldns_wireparse_errors_data[] = {
113 { LDNS_WIREPARSE_ERR_OK, "no parse error" },
114 { LDNS_WIREPARSE_ERR_GENERAL, "parse error" },
115 { LDNS_WIREPARSE_ERR_DOMAINNAME_OVERFLOW, "Domainname length overflow" },
116 { LDNS_WIREPARSE_ERR_DOMAINNAME_UNDERFLOW, "Domainname length underflow (zero length)" },
117 { LDNS_WIREPARSE_ERR_BUFFER_TOO_SMALL, "buffer too small" },
118 { LDNS_WIREPARSE_ERR_LABEL_OVERFLOW, "Label length overflow" },
119 { LDNS_WIREPARSE_ERR_EMPTY_LABEL, "Empty label" },
120 { LDNS_WIREPARSE_ERR_SYNTAX_BAD_ESCAPE, "Syntax error, bad escape sequence" },
121 { LDNS_WIREPARSE_ERR_SYNTAX, "Syntax error, could not parse the RR" },
122 { LDNS_WIREPARSE_ERR_SYNTAX_TTL, "Syntax error, could not parse the RR's TTL" },
123 { LDNS_WIREPARSE_ERR_SYNTAX_TYPE, "Syntax error, could not parse the RR's type" },
124 { LDNS_WIREPARSE_ERR_SYNTAX_CLASS, "Syntax error, could not parse the RR's class" },
125 { LDNS_WIREPARSE_ERR_SYNTAX_RDATA, "Syntax error, could not parse the RR's rdata" },
126 { LDNS_WIREPARSE_ERR_SYNTAX_MISSING_VALUE, "Syntax error, value expected" },
127 { LDNS_WIREPARSE_ERR_INVALID_STR, "Conversion error, string expected" },
128 { LDNS_WIREPARSE_ERR_SYNTAX_B64, "Conversion error, b64 encoding expected" },
129 { LDNS_WIREPARSE_ERR_SYNTAX_B32_EXT, "Conversion error, b32 ext encoding expected" },
130 { LDNS_WIREPARSE_ERR_SYNTAX_HEX, "Conversion error, hex encoding expected" },
131 { LDNS_WIREPARSE_ERR_CERT_BAD_ALGORITHM, "Bad algorithm type for CERT record" },
132 { LDNS_WIREPARSE_ERR_SYNTAX_TIME, "Conversion error, time encoding expected" },
133 { LDNS_WIREPARSE_ERR_SYNTAX_PERIOD, "Conversion error, time period encoding expected" },
134 { LDNS_WIREPARSE_ERR_SYNTAX_ILNP64, "Conversion error, 4 colon separated hex numbers expected" },
135 { LDNS_WIREPARSE_ERR_SYNTAX_EUI48,
136 "Conversion error, 6 two character hex numbers "
137 "separated by dashes expected (i.e. xx-xx-xx-xx-xx-xx" },
138 { LDNS_WIREPARSE_ERR_SYNTAX_EUI64,
139 "Conversion error, 8 two character hex numbers "
140 "separated by dashes expected (i.e. xx-xx-xx-xx-xx-xx-xx-xx" },
141 { LDNS_WIREPARSE_ERR_SYNTAX_TAG,
142 "Conversion error, a non-zero sequence of US-ASCII letters "
143 "and numbers in lower case expected" },
144 { LDNS_WIREPARSE_ERR_NOT_IMPL, "not implemented" },
145 { LDNS_WIREPARSE_ERR_SYNTAX_INT, "Conversion error, integer expected" },
146 { LDNS_WIREPARSE_ERR_SYNTAX_IP4, "Conversion error, ip4 addr expected" },
147 { LDNS_WIREPARSE_ERR_SYNTAX_IP6, "Conversion error, ip6 addr expected" },
148 { LDNS_WIREPARSE_ERR_SYNTAX_INTEGER_OVERFLOW, "Syntax error, integer overflow" },
149 { LDNS_WIREPARSE_ERR_INCLUDE, "$INCLUDE directive was seen in the zone" },
150 { LDNS_WIREPARSE_ERR_PARENTHESIS, "Parse error, parenthesis mismatch" },
153 sldns_lookup_table* sldns_wireparse_errors = sldns_wireparse_errors_data;
155 static sldns_lookup_table sldns_edns_flags_data[] = {
159 sldns_lookup_table* sldns_edns_flags = sldns_edns_flags_data;
161 static sldns_lookup_table sldns_edns_options_data[] = {
165 /* 4 draft-cheshire-edns0-owner-option */
169 { 8, "edns-client-subnet" },
170 { 11, "edns-tcp-keepalive"},
174 sldns_lookup_table* sldns_edns_options = sldns_edns_options_data;
176 static sldns_lookup_table sldns_tsig_errors_data[] = {
177 { LDNS_TSIG_ERROR_NOERROR, "NOERROR" },
178 { LDNS_RCODE_FORMERR, "FORMERR" },
179 { LDNS_RCODE_SERVFAIL, "SERVFAIL" },
180 { LDNS_RCODE_NXDOMAIN, "NXDOMAIN" },
181 { LDNS_RCODE_NOTIMPL, "NOTIMPL" },
182 { LDNS_RCODE_REFUSED, "REFUSED" },
183 { LDNS_RCODE_YXDOMAIN, "YXDOMAIN" },
184 { LDNS_RCODE_YXRRSET, "YXRRSET" },
185 { LDNS_RCODE_NXRRSET, "NXRRSET" },
186 { LDNS_RCODE_NOTAUTH, "NOTAUTH" },
187 { LDNS_RCODE_NOTZONE, "NOTZONE" },
188 { LDNS_TSIG_ERROR_BADSIG, "BADSIG" },
189 { LDNS_TSIG_ERROR_BADKEY, "BADKEY" },
190 { LDNS_TSIG_ERROR_BADTIME, "BADTIME" },
191 { LDNS_TSIG_ERROR_BADMODE, "BADMODE" },
192 { LDNS_TSIG_ERROR_BADNAME, "BADNAME" },
193 { LDNS_TSIG_ERROR_BADALG, "BADALG" },
196 sldns_lookup_table* sldns_tsig_errors = sldns_tsig_errors_data;
198 char* sldns_wire2str_pkt(uint8_t* data, size_t len)
200 size_t slen = (size_t)sldns_wire2str_pkt_buf(data, len, NULL, 0);
201 char* result = (char*)malloc(slen+1);
202 if(!result) return NULL;
203 sldns_wire2str_pkt_buf(data, len, result, slen+1);
207 char* sldns_wire2str_rr(uint8_t* rr, size_t len)
209 size_t slen = (size_t)sldns_wire2str_rr_buf(rr, len, NULL, 0);
210 char* result = (char*)malloc(slen+1);
211 if(!result) return NULL;
212 sldns_wire2str_rr_buf(rr, len, result, slen+1);
216 char* sldns_wire2str_type(uint16_t rrtype)
219 sldns_wire2str_type_buf(rrtype, buf, sizeof(buf));
223 char* sldns_wire2str_class(uint16_t rrclass)
226 sldns_wire2str_class_buf(rrclass, buf, sizeof(buf));
230 char* sldns_wire2str_dname(uint8_t* dname, size_t dname_len)
232 size_t slen=(size_t)sldns_wire2str_dname_buf(dname, dname_len, NULL, 0);
233 char* result = (char*)malloc(slen+1);
234 if(!result) return NULL;
235 sldns_wire2str_dname_buf(dname, dname_len, result, slen+1);
239 char* sldns_wire2str_rcode(int rcode)
242 sldns_wire2str_rcode_buf(rcode, buf, sizeof(buf));
246 int sldns_wire2str_pkt_buf(uint8_t* d, size_t dlen, char* s, size_t slen)
248 /* use arguments as temporary variables */
249 return sldns_wire2str_pkt_scan(&d, &dlen, &s, &slen);
252 int sldns_wire2str_rr_buf(uint8_t* d, size_t dlen, char* s, size_t slen)
254 /* use arguments as temporary variables */
255 return sldns_wire2str_rr_scan(&d, &dlen, &s, &slen, NULL, 0);
258 int sldns_wire2str_rrquestion_buf(uint8_t* d, size_t dlen, char* s, size_t slen)
260 /* use arguments as temporary variables */
261 return sldns_wire2str_rrquestion_scan(&d, &dlen, &s, &slen, NULL, 0);
264 int sldns_wire2str_rdata_buf(uint8_t* rdata, size_t rdata_len, char* str,
265 size_t str_len, uint16_t rrtype)
267 /* use arguments as temporary variables */
268 return sldns_wire2str_rdata_scan(&rdata, &rdata_len, &str, &str_len,
272 int sldns_wire2str_rr_unknown_buf(uint8_t* d, size_t dlen, char* s, size_t slen)
274 /* use arguments as temporary variables */
275 return sldns_wire2str_rr_unknown_scan(&d, &dlen, &s, &slen, NULL, 0);
278 int sldns_wire2str_rr_comment_buf(uint8_t* rr, size_t rrlen, size_t dname_len,
279 char* s, size_t slen)
281 uint16_t rrtype = sldns_wirerr_get_type(rr, rrlen, dname_len);
282 return sldns_wire2str_rr_comment_print(&s, &slen, rr, rrlen, dname_len,
286 int sldns_wire2str_type_buf(uint16_t rrtype, char* s, size_t slen)
288 /* use arguments as temporary variables */
289 return sldns_wire2str_type_print(&s, &slen, rrtype);
292 int sldns_wire2str_class_buf(uint16_t rrclass, char* s, size_t slen)
294 /* use arguments as temporary variables */
295 return sldns_wire2str_class_print(&s, &slen, rrclass);
298 int sldns_wire2str_rcode_buf(int rcode, char* s, size_t slen)
300 /* use arguments as temporary variables */
301 return sldns_wire2str_rcode_print(&s, &slen, rcode);
304 int sldns_wire2str_opcode_buf(int opcode, char* s, size_t slen)
306 /* use arguments as temporary variables */
307 return sldns_wire2str_opcode_print(&s, &slen, opcode);
310 int sldns_wire2str_dname_buf(uint8_t* d, size_t dlen, char* s, size_t slen)
312 /* use arguments as temporary variables */
313 return sldns_wire2str_dname_scan(&d, &dlen, &s, &slen, NULL, 0);
316 int sldns_str_vprint(char** str, size_t* slen, const char* format, va_list args)
318 int w = vsnprintf(*str, *slen, format, args);
320 /* error in printout */
322 } else if((size_t)w >= *slen) {
323 *str = NULL; /* we do not want str to point outside of buffer*/
332 int sldns_str_print(char** str, size_t* slen, const char* format, ...)
336 va_start(args, format);
337 w = sldns_str_vprint(str, slen, format, args);
342 /** print hex format into text buffer for specified length */
343 static int print_hex_buf(char** s, size_t* slen, uint8_t* buf, size_t len)
345 const char* hex = "0123456789ABCDEF";
347 for(i=0; i<len; i++) {
348 (void)sldns_str_print(s, slen, "%c%c", hex[(buf[i]&0xf0)>>4],
354 /** print remainder of buffer in hex format with prefixed text */
355 static int print_remainder_hex(const char* pref, uint8_t** d, size_t* dlen,
356 char** s, size_t* slen)
359 w += sldns_str_print(s, slen, "%s", pref);
360 w += print_hex_buf(s, slen, *d, *dlen);
366 int sldns_wire2str_pkt_scan(uint8_t** d, size_t* dlen, char** s, size_t* slen)
369 unsigned qdcount, ancount, nscount, arcount, i;
371 size_t pktlen = *dlen;
372 if(*dlen >= LDNS_HEADER_SIZE) {
373 qdcount = (unsigned)LDNS_QDCOUNT(*d);
374 ancount = (unsigned)LDNS_ANCOUNT(*d);
375 nscount = (unsigned)LDNS_NSCOUNT(*d);
376 arcount = (unsigned)LDNS_ARCOUNT(*d);
378 qdcount = ancount = nscount = arcount = 0;
380 w += sldns_wire2str_header_scan(d, dlen, s, slen);
381 w += sldns_str_print(s, slen, "\n");
382 w += sldns_str_print(s, slen, ";; QUESTION SECTION:\n");
383 for(i=0; i<qdcount; i++) {
384 w += sldns_wire2str_rrquestion_scan(d, dlen, s, slen,
388 w += sldns_str_print(s, slen, "\n");
389 w += sldns_str_print(s, slen, ";; ANSWER SECTION:\n");
390 for(i=0; i<ancount; i++) {
391 w += sldns_wire2str_rr_scan(d, dlen, s, slen, pkt, pktlen);
394 w += sldns_str_print(s, slen, "\n");
395 w += sldns_str_print(s, slen, ";; AUTHORITY SECTION:\n");
396 for(i=0; i<nscount; i++) {
397 w += sldns_wire2str_rr_scan(d, dlen, s, slen, pkt, pktlen);
400 w += sldns_str_print(s, slen, "\n");
401 w += sldns_str_print(s, slen, ";; ADDITIONAL SECTION:\n");
402 for(i=0; i<arcount; i++) {
403 w += sldns_wire2str_rr_scan(d, dlen, s, slen, pkt, pktlen);
406 /* other fields: WHEN(time), SERVER(IP) not available here. */
407 w += sldns_str_print(s, slen, ";; MSG SIZE rcvd: %d\n", (int)pktlen);
409 w += print_remainder_hex(";; trailing garbage 0x",
411 w += sldns_str_print(s, slen, "\n");
416 /** scan type, class and ttl and printout, for rr */
417 static int sldns_rr_tcttl_scan(uint8_t** d, size_t* dl, char** s, size_t* sl)
424 return w + print_remainder_hex("; Error malformed 0x",
426 /* these print values or 0x.. if none left */
427 t = sldns_read_uint16(*d);
428 c = sldns_read_uint16((*d)+2);
431 w += sldns_wire2str_class_print(s, sl, c);
432 w += sldns_str_print(s, sl, "\t");
433 w += sldns_wire2str_type_print(s, sl, t);
435 return w + sldns_str_print(s, sl, "; Error no ttl");
436 return w + print_remainder_hex(
437 "; Error malformed ttl 0x", d, dl, s, sl);
439 t = sldns_read_uint16(*d);
440 c = sldns_read_uint16((*d)+2);
441 ttl = sldns_read_uint32((*d)+4);
444 w += sldns_str_print(s, sl, "%lu\t", (unsigned long)ttl);
445 w += sldns_wire2str_class_print(s, sl, c);
446 w += sldns_str_print(s, sl, "\t");
447 w += sldns_wire2str_type_print(s, sl, t);
451 int sldns_wire2str_rr_scan(uint8_t** d, size_t* dlen, char** s, size_t* slen,
452 uint8_t* pkt, size_t pktlen)
456 size_t rrlen = *dlen, dname_off, rdlen, ordlen;
459 if(*dlen >= 3 && (*d)[0]==0 &&
460 sldns_read_uint16((*d)+1)==LDNS_RR_TYPE_OPT) {
461 /* perform EDNS OPT processing */
462 return sldns_wire2str_edns_scan(d, dlen, s, slen, pkt, pktlen);
465 /* try to scan the rdata with pretty-printing, but if that fails, then
466 * scan the rdata as an unknown RR type */
467 w += sldns_wire2str_dname_scan(d, dlen, s, slen, pkt, pktlen);
468 w += sldns_str_print(s, slen, "\t");
469 dname_off = rrlen-(*dlen);
471 /* like a question-RR */
472 uint16_t t = sldns_read_uint16(*d);
473 uint16_t c = sldns_read_uint16((*d)+2);
476 w += sldns_wire2str_class_print(s, slen, c);
477 w += sldns_str_print(s, slen, "\t");
478 w += sldns_wire2str_type_print(s, slen, t);
479 w += sldns_str_print(s, slen, " ; Error no ttl,rdata\n");
484 return w + sldns_str_print(s, slen, ";Error missing RR\n");
485 w += print_remainder_hex(";Error partial RR 0x", d, dlen, s, slen);
486 return w + sldns_str_print(s, slen, "\n");
488 rrtype = sldns_read_uint16(*d);
489 w += sldns_rr_tcttl_scan(d, dlen, s, slen);
490 w += sldns_str_print(s, slen, "\t");
495 return w + sldns_str_print(s, slen, ";Error missing rdatalen\n");
496 w += print_remainder_hex(";Error missing rdatalen 0x",
498 return w + sldns_str_print(s, slen, "\n");
500 rdlen = sldns_read_uint16(*d);
505 w += sldns_str_print(s, slen, "\\# %u ", (unsigned)rdlen);
507 return w + sldns_str_print(s, slen, ";Error missing rdata\n");
508 w += print_remainder_hex(";Error partial rdata 0x", d, dlen, s, slen);
509 return w + sldns_str_print(s, slen, "\n");
511 w += sldns_wire2str_rdata_scan(d, &rdlen, s, slen, rrtype, pkt, pktlen);
512 (*dlen) -= (ordlen-rdlen);
514 /* default comment */
515 w += sldns_wire2str_rr_comment_print(s, slen, rr, rrlen, dname_off,
517 w += sldns_str_print(s, slen, "\n");
521 int sldns_wire2str_rrquestion_scan(uint8_t** d, size_t* dlen, char** s,
522 size_t* slen, uint8_t* pkt, size_t pktlen)
526 w += sldns_wire2str_dname_scan(d, dlen, s, slen, pkt, pktlen);
527 w += sldns_str_print(s, slen, "\t");
530 return w + sldns_str_print(s, slen, "Error malformed\n");
531 w += print_remainder_hex("Error malformed 0x", d, dlen, s, slen);
532 return w + sldns_str_print(s, slen, "\n");
534 t = sldns_read_uint16(*d);
535 c = sldns_read_uint16((*d)+2);
538 w += sldns_wire2str_class_print(s, slen, c);
539 w += sldns_str_print(s, slen, "\t");
540 w += sldns_wire2str_type_print(s, slen, t);
541 w += sldns_str_print(s, slen, "\n");
545 int sldns_wire2str_rr_unknown_scan(uint8_t** d, size_t* dlen, char** s,
546 size_t* slen, uint8_t* pkt, size_t pktlen)
548 size_t rdlen, ordlen;
550 w += sldns_wire2str_dname_scan(d, dlen, s, slen, pkt, pktlen);
551 w += sldns_str_print(s, slen, "\t");
552 w += sldns_rr_tcttl_scan(d, dlen, s, slen);
553 w += sldns_str_print(s, slen, "\t");
556 return w + sldns_str_print(s, slen, ";Error missing rdatalen\n");
557 w += print_remainder_hex(";Error missing rdatalen 0x",
559 return w + sldns_str_print(s, slen, "\n");
561 rdlen = sldns_read_uint16(*d);
566 w += sldns_str_print(s, slen, "\\# %u ", (unsigned)rdlen);
568 return w + sldns_str_print(s, slen, ";Error missing rdata\n");
569 w += print_remainder_hex(";Error partial rdata 0x", d, dlen, s, slen);
570 return w + sldns_str_print(s, slen, "\n");
572 w += sldns_wire2str_rdata_unknown_scan(d, &rdlen, s, slen);
573 (*dlen) -= (ordlen-rdlen);
574 w += sldns_str_print(s, slen, "\n");
578 /** print rr comment for type DNSKEY */
579 static int rr_comment_dnskey(char** s, size_t* slen, uint8_t* rr,
580 size_t rrlen, size_t dname_off)
585 if(rrlen < dname_off + 10) return 0;
586 rdlen = sldns_read_uint16(rr+dname_off+8);
587 if(rrlen < dname_off + 10 + rdlen) return 0;
588 rdata = rr + dname_off + 10;
589 flags = (int)sldns_read_uint16(rdata);
590 w += sldns_str_print(s, slen, " ;{");
593 w += sldns_str_print(s, slen, "id = %u",
594 sldns_calc_keytag_raw(rdata, rdlen));
597 if((flags&LDNS_KEY_ZONE_KEY)) {
598 if((flags&LDNS_KEY_SEP_KEY))
599 w += sldns_str_print(s, slen, " (ksk)");
600 else w += sldns_str_print(s, slen, " (zsk)");
605 w += sldns_str_print(s, slen, ", ");
606 w += sldns_str_print(s, slen, "size = %db",
607 (int)sldns_rr_dnskey_key_size_raw(
608 (unsigned char*)rdata+4, rdlen-4, (int)(rdata[3])));
611 w += sldns_str_print(s, slen, "}");
615 /** print rr comment for type RRSIG */
616 static int rr_comment_rrsig(char** s, size_t* slen, uint8_t* rr,
617 size_t rrlen, size_t dname_off)
621 if(rrlen < dname_off + 10) return 0;
622 rdlen = sldns_read_uint16(rr+dname_off+8);
623 if(rrlen < dname_off + 10 + rdlen) return 0;
624 rdata = rr + dname_off + 10;
625 if(rdlen < 18) return 0;
626 return sldns_str_print(s, slen, " ;{id = %d}",
627 (int)sldns_read_uint16(rdata+16));
630 /** print rr comment for type NSEC3 */
631 static int rr_comment_nsec3(char** s, size_t* slen, uint8_t* rr,
632 size_t rrlen, size_t dname_off)
637 if(rrlen < dname_off + 10) return 0;
638 rdlen = sldns_read_uint16(rr+dname_off+8);
639 if(rrlen < dname_off + 10 + rdlen) return 0;
640 rdata = rr + dname_off + 10;
641 if(rdlen < 2) return 0;
642 if((rdata[1] & LDNS_NSEC3_VARS_OPTOUT_MASK))
643 w += sldns_str_print(s, slen, " ;{flags: optout}");
647 int sldns_wire2str_rr_comment_print(char** s, size_t* slen, uint8_t* rr,
648 size_t rrlen, size_t dname_off, uint16_t rrtype)
650 if(rrtype == LDNS_RR_TYPE_DNSKEY) {
651 return rr_comment_dnskey(s, slen, rr, rrlen, dname_off);
652 } else if(rrtype == LDNS_RR_TYPE_RRSIG) {
653 return rr_comment_rrsig(s, slen, rr, rrlen, dname_off);
654 } else if(rrtype == LDNS_RR_TYPE_NSEC3) {
655 return rr_comment_nsec3(s, slen, rr, rrlen, dname_off);
660 int sldns_wire2str_header_scan(uint8_t** d, size_t* dlen, char** s,
665 w += sldns_str_print(s, slen, ";; ->>HEADER<<- ");
667 return w+sldns_str_print(s, slen, "Error empty packet");
669 return w+print_remainder_hex("Error header too short 0x", d, dlen, s, slen);
670 opcode = (int)LDNS_OPCODE_WIRE(*d);
671 rcode = (int)LDNS_RCODE_WIRE(*d);
672 w += sldns_str_print(s, slen, "opcode: ");
673 w += sldns_wire2str_opcode_print(s, slen, opcode);
674 w += sldns_str_print(s, slen, ", ");
675 w += sldns_str_print(s, slen, "rcode: ");
676 w += sldns_wire2str_rcode_print(s, slen, rcode);
677 w += sldns_str_print(s, slen, ", ");
678 w += sldns_str_print(s, slen, "id: %d\n", (int)LDNS_ID_WIRE(*d));
679 w += sldns_str_print(s, slen, ";; flags:");
680 if(LDNS_QR_WIRE(*d)) w += sldns_str_print(s, slen, " qr");
681 if(LDNS_AA_WIRE(*d)) w += sldns_str_print(s, slen, " aa");
682 if(LDNS_TC_WIRE(*d)) w += sldns_str_print(s, slen, " tc");
683 if(LDNS_RD_WIRE(*d)) w += sldns_str_print(s, slen, " rd");
684 if(LDNS_CD_WIRE(*d)) w += sldns_str_print(s, slen, " cd");
685 if(LDNS_RA_WIRE(*d)) w += sldns_str_print(s, slen, " ra");
686 if(LDNS_AD_WIRE(*d)) w += sldns_str_print(s, slen, " ad");
687 if(LDNS_Z_WIRE(*d)) w += sldns_str_print(s, slen, " z");
688 w += sldns_str_print(s, slen, " ; ");
689 if(*dlen < LDNS_HEADER_SIZE)
690 return w+print_remainder_hex("Error header too short 0x", d, dlen, s, slen);
691 w += sldns_str_print(s, slen, "QUERY: %d, ", (int)LDNS_QDCOUNT(*d));
692 w += sldns_str_print(s, slen, "ANSWER: %d, ", (int)LDNS_ANCOUNT(*d));
693 w += sldns_str_print(s, slen, "AUTHORITY: %d, ", (int)LDNS_NSCOUNT(*d));
694 w += sldns_str_print(s, slen, "ADDITIONAL: %d ", (int)LDNS_ARCOUNT(*d));
695 *d += LDNS_HEADER_SIZE;
696 *dlen -= LDNS_HEADER_SIZE;
700 int sldns_wire2str_rdata_scan(uint8_t** d, size_t* dlen, char** s,
701 size_t* slen, uint16_t rrtype, uint8_t* pkt, size_t pktlen)
703 /* try to prettyprint, but if that fails, use unknown format */
706 size_t origdlen = *dlen, origslen = *slen;
708 sldns_rdf_type rdftype;
711 const sldns_rr_descriptor *desc = sldns_rr_descript(rrtype);
712 if(!desc) /* unknown format */
713 return sldns_wire2str_rdata_unknown_scan(d, dlen, s, slen);
714 /* dlen equals the rdatalen for the rdata */
716 r_max = sldns_rr_descriptor_maximum(desc);
717 for(r_cnt=0; r_cnt < r_max; r_cnt++) {
719 if(r_cnt < sldns_rr_descriptor_minimum(desc))
721 break; /* nothing more to print */
723 rdftype = sldns_rr_descriptor_field_type(desc, r_cnt);
725 w += sldns_str_print(s, slen, " ");
726 n = sldns_wire2str_rdf_scan(d, dlen, s, slen, rdftype,
730 /* failed, use unknown format */
731 *d = origd; *s = origs;
732 *dlen = origdlen; *slen = origslen;
733 return sldns_wire2str_rdata_unknown_scan(d, dlen,
744 int sldns_wire2str_rdata_unknown_scan(uint8_t** d, size_t* dlen, char** s,
750 w += sldns_str_print(s, slen, "\\# %u", (unsigned)*dlen);
752 /* print rdlen in hex */
754 w += sldns_str_print(s, slen, " ");
755 w += print_hex_buf(s, slen, *d, *dlen);
761 /** print and escape one character for a domain dname */
762 static int dname_char_print(char** s, size_t* slen, uint8_t c)
764 if(c == '.' || c == ';' || c == '(' || c == ')' || c == '\\')
765 return sldns_str_print(s, slen, "\\%c", c);
766 else if(!(isascii((unsigned char)c) && isgraph((unsigned char)c)))
767 return sldns_str_print(s, slen, "\\%03u", (unsigned)c);
777 int sldns_wire2str_dname_scan(uint8_t** d, size_t* dlen, char** s, size_t* slen,
778 uint8_t* pkt, size_t pktlen)
781 /* spool labels onto the string, use compression if its there */
783 unsigned i, counter=0;
784 const unsigned maxcompr = 1000; /* loop detection, max compr ptrs */
786 if(*dlen == 0) return sldns_str_print(s, slen, "ErrorMissingDname");
790 return sldns_str_print(s, slen, ".");
793 /* read label length */
794 uint8_t labellen = *pos++;
795 if(in_buf) { (*d)++; (*dlen)--; }
797 /* find out what sort of label we have */
798 if((labellen&0xc0) == 0xc0) {
801 if(in_buf && *dlen == 0)
802 return w + sldns_str_print(s, slen,
803 "ErrorPartialDname");
804 else if(!in_buf && pos+1 > pkt+pktlen)
805 return w + sldns_str_print(s, slen,
806 "ErrorPartialDname");
807 target = ((labellen&0x3f)<<8) | *pos;
808 if(in_buf) { (*d)++; (*dlen)--; }
809 /* move to target, if possible */
810 if(!pkt || target >= pktlen)
811 return w + sldns_str_print(s, slen,
812 "ErrorComprPtrOutOfBounds");
813 if(counter++ > maxcompr)
814 return w + sldns_str_print(s, slen,
815 "ErrorComprPtrLooped");
819 } else if((labellen&0xc0)) {
820 /* notimpl label type */
821 w += sldns_str_print(s, slen,
822 "ErrorLABELTYPE%xIsUnknown",
823 (int)(labellen&0xc0));
827 /* spool label characters, end with '.' */
828 if(in_buf && *dlen < (size_t)labellen)
829 labellen = (uint8_t)*dlen;
830 else if(!in_buf && pos+(size_t)labellen > pkt+pktlen)
831 labellen = (uint8_t)(pkt + pktlen - pos);
832 for(i=0; i<(unsigned)labellen; i++) {
833 w += dname_char_print(s, slen, *pos++);
838 if(*dlen == 0) break;
840 w += sldns_str_print(s, slen, ".");
842 /* skip over final root label */
843 if(in_buf && *dlen > 0) { (*d)++; (*dlen)--; }
844 /* in case we printed no labels, terminate dname */
845 if(w == 0) w += sldns_str_print(s, slen, ".");
849 int sldns_wire2str_opcode_print(char** s, size_t* slen, int opcode)
851 sldns_lookup_table *lt = sldns_lookup_by_id(sldns_opcodes, opcode);
852 if (lt && lt->name) {
853 return sldns_str_print(s, slen, "%s", lt->name);
855 return sldns_str_print(s, slen, "OPCODE%u", (unsigned)opcode);
858 int sldns_wire2str_rcode_print(char** s, size_t* slen, int rcode)
860 sldns_lookup_table *lt = sldns_lookup_by_id(sldns_rcodes, rcode);
861 if (lt && lt->name) {
862 return sldns_str_print(s, slen, "%s", lt->name);
864 return sldns_str_print(s, slen, "RCODE%u", (unsigned)rcode);
867 int sldns_wire2str_class_print(char** s, size_t* slen, uint16_t rrclass)
869 sldns_lookup_table *lt = sldns_lookup_by_id(sldns_rr_classes,
871 if (lt && lt->name) {
872 return sldns_str_print(s, slen, "%s", lt->name);
874 return sldns_str_print(s, slen, "CLASS%u", (unsigned)rrclass);
877 int sldns_wire2str_type_print(char** s, size_t* slen, uint16_t rrtype)
879 const sldns_rr_descriptor *descriptor = sldns_rr_descript(rrtype);
880 if (descriptor && descriptor->_name) {
881 return sldns_str_print(s, slen, "%s", descriptor->_name);
883 return sldns_str_print(s, slen, "TYPE%u", (unsigned)rrtype);
886 int sldns_wire2str_edns_option_code_print(char** s, size_t* slen,
889 sldns_lookup_table *lt = sldns_lookup_by_id(sldns_edns_options,
891 if (lt && lt->name) {
892 return sldns_str_print(s, slen, "%s", lt->name);
894 return sldns_str_print(s, slen, "OPT%u", (unsigned)opcode);
897 int sldns_wire2str_class_scan(uint8_t** d, size_t* dlen, char** s, size_t* slen)
900 if(*dlen == 0) return 0;
901 if(*dlen < 2) return print_remainder_hex("Error malformed 0x", d, dlen, s, slen);
902 c = sldns_read_uint16(*d);
905 return sldns_wire2str_class_print(s, slen, c);
908 int sldns_wire2str_type_scan(uint8_t** d, size_t* dlen, char** s, size_t* slen)
911 if(*dlen == 0) return 0;
912 if(*dlen < 2) return print_remainder_hex("Error malformed 0x", d, dlen, s, slen);
913 t = sldns_read_uint16(*d);
916 return sldns_wire2str_type_print(s, slen, t);
919 int sldns_wire2str_ttl_scan(uint8_t** d, size_t* dlen, char** s, size_t* slen)
922 if(*dlen == 0) return 0;
923 if(*dlen < 4) return print_remainder_hex("Error malformed 0x", d, dlen, s, slen);
924 ttl = sldns_read_uint32(*d);
927 return sldns_str_print(s, slen, "%u", (unsigned)ttl);
930 int sldns_wire2str_rdf_scan(uint8_t** d, size_t* dlen, char** s, size_t* slen,
931 int rdftype, uint8_t* pkt, size_t pktlen)
933 if(*dlen == 0) return 0;
935 case LDNS_RDF_TYPE_NONE:
937 case LDNS_RDF_TYPE_DNAME:
938 return sldns_wire2str_dname_scan(d, dlen, s, slen, pkt, pktlen);
939 case LDNS_RDF_TYPE_INT8:
940 return sldns_wire2str_int8_scan(d, dlen, s, slen);
941 case LDNS_RDF_TYPE_INT16:
942 return sldns_wire2str_int16_scan(d, dlen, s, slen);
943 case LDNS_RDF_TYPE_INT32:
944 return sldns_wire2str_int32_scan(d, dlen, s, slen);
945 case LDNS_RDF_TYPE_PERIOD:
946 return sldns_wire2str_period_scan(d, dlen, s, slen);
947 case LDNS_RDF_TYPE_TSIGTIME:
948 return sldns_wire2str_tsigtime_scan(d, dlen, s, slen);
949 case LDNS_RDF_TYPE_A:
950 return sldns_wire2str_a_scan(d, dlen, s, slen);
951 case LDNS_RDF_TYPE_AAAA:
952 return sldns_wire2str_aaaa_scan(d, dlen, s, slen);
953 case LDNS_RDF_TYPE_STR:
954 return sldns_wire2str_str_scan(d, dlen, s, slen);
955 case LDNS_RDF_TYPE_APL:
956 return sldns_wire2str_apl_scan(d, dlen, s, slen);
957 case LDNS_RDF_TYPE_B32_EXT:
958 return sldns_wire2str_b32_ext_scan(d, dlen, s, slen);
959 case LDNS_RDF_TYPE_B64:
960 return sldns_wire2str_b64_scan(d, dlen, s, slen);
961 case LDNS_RDF_TYPE_HEX:
962 return sldns_wire2str_hex_scan(d, dlen, s, slen);
963 case LDNS_RDF_TYPE_NSEC:
964 return sldns_wire2str_nsec_scan(d, dlen, s, slen);
965 case LDNS_RDF_TYPE_NSEC3_SALT:
966 return sldns_wire2str_nsec3_salt_scan(d, dlen, s, slen);
967 case LDNS_RDF_TYPE_TYPE:
968 return sldns_wire2str_type_scan(d, dlen, s, slen);
969 case LDNS_RDF_TYPE_CLASS:
970 return sldns_wire2str_class_scan(d, dlen, s, slen);
971 case LDNS_RDF_TYPE_CERT_ALG:
972 return sldns_wire2str_cert_alg_scan(d, dlen, s, slen);
973 case LDNS_RDF_TYPE_ALG:
974 return sldns_wire2str_alg_scan(d, dlen, s, slen);
975 case LDNS_RDF_TYPE_UNKNOWN:
976 return sldns_wire2str_unknown_scan(d, dlen, s, slen);
977 case LDNS_RDF_TYPE_TIME:
978 return sldns_wire2str_time_scan(d, dlen, s, slen);
979 case LDNS_RDF_TYPE_LOC:
980 return sldns_wire2str_loc_scan(d, dlen, s, slen);
981 case LDNS_RDF_TYPE_WKS:
982 case LDNS_RDF_TYPE_SERVICE:
983 return sldns_wire2str_wks_scan(d, dlen, s, slen);
984 case LDNS_RDF_TYPE_NSAP:
985 return sldns_wire2str_nsap_scan(d, dlen, s, slen);
986 case LDNS_RDF_TYPE_ATMA:
987 return sldns_wire2str_atma_scan(d, dlen, s, slen);
988 case LDNS_RDF_TYPE_IPSECKEY:
989 return sldns_wire2str_ipseckey_scan(d, dlen, s, slen, pkt,
991 case LDNS_RDF_TYPE_HIP:
992 return sldns_wire2str_hip_scan(d, dlen, s, slen);
993 case LDNS_RDF_TYPE_INT16_DATA:
994 return sldns_wire2str_int16_data_scan(d, dlen, s, slen);
995 case LDNS_RDF_TYPE_NSEC3_NEXT_OWNER:
996 return sldns_wire2str_b32_ext_scan(d, dlen, s, slen);
997 case LDNS_RDF_TYPE_ILNP64:
998 return sldns_wire2str_ilnp64_scan(d, dlen, s, slen);
999 case LDNS_RDF_TYPE_EUI48:
1000 return sldns_wire2str_eui48_scan(d, dlen, s, slen);
1001 case LDNS_RDF_TYPE_EUI64:
1002 return sldns_wire2str_eui64_scan(d, dlen, s, slen);
1003 case LDNS_RDF_TYPE_TAG:
1004 return sldns_wire2str_tag_scan(d, dlen, s, slen);
1005 case LDNS_RDF_TYPE_LONG_STR:
1006 return sldns_wire2str_long_str_scan(d, dlen, s, slen);
1007 case LDNS_RDF_TYPE_TSIGERROR:
1008 return sldns_wire2str_tsigerror_scan(d, dlen, s, slen);
1010 /* unknown rdf type */
1014 int sldns_wire2str_int8_scan(uint8_t** d, size_t* dl, char** s, size_t* sl)
1017 if(*dl < 1) return -1;
1018 w = sldns_str_print(s, sl, "%u", (unsigned)**d);
1024 int sldns_wire2str_int16_scan(uint8_t** d, size_t* dl, char** s, size_t* sl)
1027 if(*dl < 2) return -1;
1028 w = sldns_str_print(s, sl, "%lu", (unsigned long)sldns_read_uint16(*d));
1034 int sldns_wire2str_int32_scan(uint8_t** d, size_t* dl, char** s, size_t* sl)
1037 if(*dl < 4) return -1;
1038 w = sldns_str_print(s, sl, "%lu", (unsigned long)sldns_read_uint32(*d));
1044 int sldns_wire2str_period_scan(uint8_t** d, size_t* dl, char** s, size_t* sl)
1047 if(*dl < 4) return -1;
1048 w = sldns_str_print(s, sl, "%u", (unsigned)sldns_read_uint32(*d));
1054 int sldns_wire2str_tsigtime_scan(uint8_t** d, size_t* dl, char** s, size_t* sl)
1056 /* tsigtime is 48 bits network order unsigned integer */
1058 uint64_t tsigtime = 0;
1059 uint64_t d0, d1, d2, d3, d4, d5;
1060 if(*dl < 6) return -1;
1061 d0 = (*d)[0]; /* cast to uint64 for shift operations */
1067 tsigtime = (d0<<40) | (d1<<32) | (d2<<24) | (d3<<16) | (d4<<8) | d5;
1069 w = sldns_str_print(s, sl, "%llu", (long long)tsigtime);
1071 w = sldns_str_print(s, sl, "%I64u", (long long)tsigtime);
1078 int sldns_wire2str_a_scan(uint8_t** d, size_t* dl, char** s, size_t* sl)
1082 if(*dl < 4) return -1;
1083 if(!inet_ntop(AF_INET, *d, buf, (socklen_t)sizeof(buf)))
1085 w = sldns_str_print(s, sl, "%s", buf);
1091 int sldns_wire2str_aaaa_scan(uint8_t** d, size_t* dl, char** s, size_t* sl)
1096 if(*dl < 16) return -1;
1097 if(!inet_ntop(AF_INET6, *d, buf, (socklen_t)sizeof(buf)))
1099 w = sldns_str_print(s, sl, "%s", buf);
1108 /** printout escaped TYPE_STR character */
1109 static int str_char_print(char** s, size_t* sl, uint8_t c)
1111 if(isprint((unsigned char)c) || c == '\t') {
1112 if(c == '\"' || c == '\\')
1113 return sldns_str_print(s, sl, "\\%c", c);
1121 return sldns_str_print(s, sl, "\\%03u", (unsigned)c);
1124 int sldns_wire2str_str_scan(uint8_t** d, size_t* dl, char** s, size_t* sl)
1128 if(*dl < 1) return -1;
1130 if(*dl < 1+len) return -1;
1133 w += sldns_str_print(s, sl, "\"");
1134 for(i=0; i<len; i++)
1135 w += str_char_print(s, sl, (*d)[i]);
1136 w += sldns_str_print(s, sl, "\"");
1142 int sldns_wire2str_apl_scan(uint8_t** d, size_t* dl, char** s, size_t* sl)
1146 uint8_t negation, prefix, adflength;
1147 if(*dl < 4) return -1;
1148 family = sldns_read_uint16(*d);
1150 negation = ((*d)[3] & LDNS_APL_NEGATION);
1151 adflength = ((*d)[3] & LDNS_APL_MASK);
1152 if(*dl < 4+(size_t)adflength) return -1;
1153 if(family != LDNS_APL_IP4 && family != LDNS_APL_IP6)
1154 return -1; /* unknown address family */
1156 w += sldns_str_print(s, sl, "!");
1157 w += sldns_str_print(s, sl, "%u:", (unsigned)family);
1158 if(family == LDNS_APL_IP4) {
1159 /* check if prefix <32 ? */
1160 /* address is variable length 0 - 4 */
1161 for(i=0; i<4; i++) {
1163 w += sldns_str_print(s, sl, ".");
1164 if(i < (int)adflength)
1165 w += sldns_str_print(s, sl, "%d", (*d)[4+i]);
1166 else w += sldns_str_print(s, sl, "0");
1168 } else if(family == LDNS_APL_IP6) {
1169 /* check if prefix <128 ? */
1170 /* address is variable length 0 - 16 */
1171 for(i=0; i<16; i++) {
1173 w += sldns_str_print(s, sl, ":");
1174 if(i < (int)adflength)
1175 w += sldns_str_print(s, sl, "%02x", (*d)[4+i]);
1176 else w += sldns_str_print(s, sl, "00");
1179 w += sldns_str_print(s, sl, "/%u", (unsigned)prefix);
1180 (*d) += 4+adflength;
1181 (*dl) -= 4+adflength;
1185 int sldns_wire2str_b32_ext_scan(uint8_t** d, size_t* dl, char** s, size_t* sl)
1189 if(*dl < 1) return -1;
1191 if(*dl < 1+datalen) return -1;
1192 sz = sldns_b32_ntop_calculate_size(datalen);
1195 (*dl) -= (datalen+1);
1196 return (int)sz; /* out of space really, but would need buffer
1197 in order to truncate the output */
1199 sldns_b32_ntop_extended_hex((*d)+1, datalen, *s, *sl);
1201 (*dl) -= (datalen+1);
1207 /** scan number of bytes from wire into b64 presentation format */
1208 static int sldns_wire2str_b64_scan_num(uint8_t** d, size_t* dl, char** s,
1209 size_t* sl, size_t num)
1211 /* b64_ntop_calculate size includes null at the end */
1212 size_t sz = sldns_b64_ntop_calculate_size(num)-1;
1216 return (int)sz; /* out of space really, but would need buffer
1217 in order to truncate the output */
1219 sldns_b64_ntop(*d, num, *s, *sl);
1227 int sldns_wire2str_b64_scan(uint8_t** d, size_t* dl, char** s, size_t* sl)
1230 return sldns_str_print(s, sl, "0");
1232 return sldns_wire2str_b64_scan_num(d, dl, s, sl, *dl);
1235 int sldns_wire2str_hex_scan(uint8_t** d, size_t* dl, char** s, size_t* sl)
1238 return sldns_str_print(s, sl, "0");
1240 return print_remainder_hex("", d, dl, s, sl);
1243 int sldns_wire2str_nsec_scan(uint8_t** d, size_t* dl, char** s, size_t* sl)
1247 unsigned i, bit, window, block_len;
1251 /* check for errors */
1253 if(pl < 2) return -1;
1254 block_len = (unsigned)p[1];
1255 if(pl < 2+block_len) return -1;
1264 if(pl < 2) return -1; /* cannot happen */
1265 window = (unsigned)p[0];
1266 block_len = (unsigned)p[1];
1267 if(pl < 2+block_len) return -1; /* cannot happen */
1269 for(i=0; i<block_len; i++) {
1270 if(p[i] == 0) continue;
1271 /* base type number for this octet */
1272 t = ((window)<<8) | (i << 3);
1273 for(bit=0; bit<8; bit++) {
1274 if((p[i]&(0x80>>bit))) {
1275 if(w) w += sldns_str_print(s, sl, " ");
1276 w += sldns_wire2str_type_print(s, sl,
1289 int sldns_wire2str_nsec3_salt_scan(uint8_t** d, size_t* dl, char** s, size_t* sl)
1293 if(*dl < 1) return -1;
1294 salt_len = (size_t)(*d)[0];
1295 if(*dl < 1+salt_len) return -1;
1299 return sldns_str_print(s, sl, "-");
1301 w = print_hex_buf(s, sl, *d, salt_len);
1307 int sldns_wire2str_cert_alg_scan(uint8_t** d, size_t* dl, char** s, size_t* sl)
1309 sldns_lookup_table *lt;
1311 if(*dl < 2) return -1;
1312 data = (int)sldns_read_uint16(*d);
1313 lt = sldns_lookup_by_id(sldns_cert_algorithms, data);
1315 w = sldns_str_print(s, sl, "%s", lt->name);
1316 else w = sldns_str_print(s, sl, "%d", data);
1322 int sldns_wire2str_alg_scan(uint8_t** d, size_t* dl, char** s, size_t* sl)
1324 /* don't use algorithm mnemonics in the presentation format
1325 * this kind of got sneaked into the rfc's */
1326 return sldns_wire2str_int8_scan(d, dl, s, sl);
1329 int sldns_wire2str_unknown_scan(uint8_t** d, size_t* dl, char** s, size_t* sl)
1331 return sldns_wire2str_rdata_unknown_scan(d, dl, s, sl);
1334 int sldns_wire2str_time_scan(uint8_t** d, size_t* dl, char** s, size_t* sl)
1336 /* create a YYYYMMDDHHMMSS string if possible */
1340 memset(&tm, 0, sizeof(tm));
1341 if(*dl < 4) return -1;
1342 t = sldns_read_uint32(*d);
1344 if(sldns_serial_arithmetics_gmtime_r(t, time(NULL), &tm) &&
1345 strftime(date_buf, 15, "%Y%m%d%H%M%S", &tm)) {
1348 return sldns_str_print(s, sl, "%s", date_buf);
1354 loc_cm_print(char** str, size_t* sl, uint8_t mantissa, uint8_t exponent)
1358 /* is it 0.<two digits> ? */
1362 return sldns_str_print(str, sl, "0.%02ld", (long)mantissa);
1364 /* always <digit><string of zeros> */
1365 w += sldns_str_print(str, sl, "%d", (int)mantissa);
1366 for(i=0; i<exponent-2; i++)
1367 w += sldns_str_print(str, sl, "0");
1371 int sldns_wire2str_loc_scan(uint8_t** d, size_t* dl, char** str, size_t* sl)
1373 /* we could do checking (ie degrees < 90 etc)? */
1376 uint8_t horizontal_precision;
1377 uint8_t vertical_precision;
1386 uint32_t equator = (uint32_t)1 << 31; /* 2**31 */
1389 if(*dl < 16) return -1;
1392 return sldns_wire2str_hex_scan(d, dl, str, sl);
1394 horizontal_precision = (*d)[2];
1395 vertical_precision = (*d)[3];
1397 latitude = sldns_read_uint32((*d)+4);
1398 longitude = sldns_read_uint32((*d)+8);
1399 altitude = sldns_read_uint32((*d)+12);
1401 if (latitude > equator) {
1403 latitude = latitude - equator;
1406 latitude = equator - latitude;
1408 h = latitude / (1000 * 60 * 60);
1409 latitude = latitude % (1000 * 60 * 60);
1410 m = latitude / (1000 * 60);
1411 latitude = latitude % (1000 * 60);
1412 s = (double) latitude / 1000.0;
1413 w += sldns_str_print(str, sl, "%02u %02u %06.3f %c ",
1414 h, m, s, northerness);
1416 if (longitude > equator) {
1418 longitude = longitude - equator;
1421 longitude = equator - longitude;
1423 h = longitude / (1000 * 60 * 60);
1424 longitude = longitude % (1000 * 60 * 60);
1425 m = longitude / (1000 * 60);
1426 longitude = longitude % (1000 * 60);
1427 s = (double) longitude / (1000.0);
1428 w += sldns_str_print(str, sl, "%02u %02u %06.3f %c ",
1429 h, m, s, easterness);
1431 s = ((double) altitude) / 100;
1434 if(altitude%100 != 0)
1435 w += sldns_str_print(str, sl, "%.2f", s);
1437 w += sldns_str_print(str, sl, "%.0f", s);
1439 w += sldns_str_print(str, sl, "m ");
1441 w += loc_cm_print(str, sl, (size & 0xf0) >> 4, size & 0x0f);
1442 w += sldns_str_print(str, sl, "m ");
1444 w += loc_cm_print(str, sl, (horizontal_precision & 0xf0) >> 4,
1445 horizontal_precision & 0x0f);
1446 w += sldns_str_print(str, sl, "m ");
1448 w += loc_cm_print(str, sl, (vertical_precision & 0xf0) >> 4,
1449 vertical_precision & 0x0f);
1450 w += sldns_str_print(str, sl, "m");
1457 int sldns_wire2str_wks_scan(uint8_t** d, size_t* dl, char** s, size_t* sl)
1459 /* protocol, followed by bitmap of services */
1460 const char* proto_name = NULL;
1461 struct protoent *protocol;
1462 struct servent *service;
1463 uint8_t protocol_nr;
1464 int bit, port, w = 0;
1466 /* we cannot print with strings because they
1467 * are not portable, the presentation format may
1468 * not be able to be read in on another computer. */
1469 int print_symbols = 0;
1472 if(*dl < 1) return -1;
1473 protocol_nr = (*d)[0];
1476 protocol = getprotobynumber((int)protocol_nr);
1477 if(protocol && (protocol->p_name != NULL)) {
1478 w += sldns_str_print(s, sl, "%s", protocol->p_name);
1479 proto_name = protocol->p_name;
1480 } else if(protocol_nr == 6) {
1481 w += sldns_str_print(s, sl, "tcp");
1482 } else if(protocol_nr == 17) {
1483 w += sldns_str_print(s, sl, "udp");
1485 w += sldns_str_print(s, sl, "%u", (unsigned)protocol_nr);
1488 for(i=0; i<*dl; i++) {
1491 for(bit=0; bit<8; bit++) {
1492 if(!(((*d)[i])&(0x80>>bit)))
1494 port = (int)i*8 + bit;
1499 service = getservbyport(
1500 (int)htons((uint16_t)port), proto_name);
1501 if(service && service->s_name)
1502 w += sldns_str_print(s, sl, " %s",
1504 else w += sldns_str_print(s, sl, " %u",
1509 #ifdef HAVE_ENDSERVENT
1512 #ifdef HAVE_ENDPROTOENT
1520 int sldns_wire2str_nsap_scan(uint8_t** d, size_t* dl, char** s, size_t* sl)
1522 return print_remainder_hex("0x", d, dl, s, sl);
1525 int sldns_wire2str_atma_scan(uint8_t** d, size_t* dl, char** s, size_t* sl)
1527 return print_remainder_hex("", d, dl, s, sl);
1530 /* internal scan routine that can modify arguments on failure */
1531 static int sldns_wire2str_ipseckey_scan_internal(uint8_t** d, size_t* dl,
1532 char** s, size_t* sl, uint8_t* pkt, size_t pktlen)
1534 /* http://www.ietf.org/internet-drafts/draft-ietf-ipseckey-rr-12.txt*/
1535 uint8_t precedence, gateway_type, algorithm;
1538 if(*dl < 3) return -1;
1539 precedence = (*d)[0];
1540 gateway_type = (*d)[1];
1541 algorithm = (*d)[2];
1542 if(gateway_type > 3)
1543 return -1; /* unknown */
1546 w += sldns_str_print(s, sl, "%d %d %d ",
1547 (int)precedence, (int)gateway_type, (int)algorithm);
1549 switch(gateway_type) {
1550 case 0: /* no gateway */
1551 w += sldns_str_print(s, sl, ".");
1554 w += sldns_wire2str_a_scan(d, dl, s, sl);
1557 w += sldns_wire2str_aaaa_scan(d, dl, s, sl);
1560 w += sldns_wire2str_dname_scan(d, dl, s, sl, pkt, pktlen);
1562 default: /* unknown */
1568 w += sldns_str_print(s, sl, " ");
1569 w += sldns_wire2str_b64_scan_num(d, dl, s, sl, *dl);
1573 int sldns_wire2str_ipseckey_scan(uint8_t** d, size_t* dl, char** s, size_t* sl,
1574 uint8_t* pkt, size_t pktlen)
1578 size_t odl = *dl, osl = *sl;
1579 int w=sldns_wire2str_ipseckey_scan_internal(d, dl, s, sl, pkt, pktlen);
1590 int sldns_wire2str_hip_scan(uint8_t** d, size_t* dl, char** s, size_t* sl)
1593 uint8_t algo, hitlen;
1601 pklen = sldns_read_uint16((*d)+2);
1602 if(*dl < (size_t)4 + (size_t)hitlen + (size_t)pklen)
1605 /* write: algo hit pubkey */
1606 w = sldns_str_print(s, sl, "%u ", (unsigned)algo);
1607 w += print_hex_buf(s, sl, (*d)+4, hitlen);
1608 w += sldns_str_print(s, sl, " ");
1611 w += sldns_wire2str_b64_scan_num(d, dl, s, sl, pklen);
1615 int sldns_wire2str_int16_data_scan(uint8_t** d, size_t* dl, char** s, size_t* sl)
1621 n = sldns_read_uint16(*d);
1622 if(*dl < 2+(size_t)n)
1627 return sldns_str_print(s, sl, "0");
1629 w = sldns_str_print(s, sl, "%u ", (unsigned)n);
1630 w += sldns_wire2str_b64_scan_num(d, dl, s, sl, n);
1634 int sldns_wire2str_nsec3_next_owner_scan(uint8_t** d, size_t* dl, char** s,
1637 return sldns_wire2str_b32_ext_scan(d, dl, s, sl);
1640 int sldns_wire2str_ilnp64_scan(uint8_t** d, size_t* dl, char** s, size_t* sl)
1645 w = sldns_str_print(s, sl, "%.4x:%.4x:%.4x:%.4x",
1646 sldns_read_uint16(*d), sldns_read_uint16((*d)+2),
1647 sldns_read_uint16((*d)+4), sldns_read_uint16((*d)+6));
1653 int sldns_wire2str_eui48_scan(uint8_t** d, size_t* dl, char** s, size_t* sl)
1658 w = sldns_str_print(s, sl, "%.2x-%.2x-%.2x-%.2x-%.2x-%.2x",
1659 (*d)[0], (*d)[1], (*d)[2], (*d)[3], (*d)[4], (*d)[5]);
1665 int sldns_wire2str_eui64_scan(uint8_t** d, size_t* dl, char** s, size_t* sl)
1670 w = sldns_str_print(s, sl, "%.2x-%.2x-%.2x-%.2x-%.2x-%.2x-%.2x-%.2x",
1671 (*d)[0], (*d)[1], (*d)[2], (*d)[3], (*d)[4], (*d)[5],
1678 int sldns_wire2str_tag_scan(uint8_t** d, size_t* dl, char** s, size_t* sl)
1684 n = (size_t)((*d)[0]);
1688 if(!isalnum((unsigned char)(*d)[i+1]))
1691 w += sldns_str_print(s, sl, "%c", (char)(*d)[i+1]);
1697 int sldns_wire2str_long_str_scan(uint8_t** d, size_t* dl, char** s, size_t* sl)
1701 w += sldns_str_print(s, sl, "\"");
1702 for(i=0; i<*dl; i++)
1703 w += str_char_print(s, sl, (*d)[i]);
1704 w += sldns_str_print(s, sl, "\"");
1710 int sldns_wire2str_tsigerror_scan(uint8_t** d, size_t* dl, char** s, size_t* sl)
1712 sldns_lookup_table *lt;
1714 if(*dl < 2) return -1;
1715 data = (int)sldns_read_uint16(*d);
1716 lt = sldns_lookup_by_id(sldns_tsig_errors, data);
1718 w = sldns_str_print(s, sl, "%s", lt->name);
1719 else w = sldns_str_print(s, sl, "%d", data);
1725 int sldns_wire2str_edns_llq_print(char** s, size_t* sl, uint8_t* data,
1729 const char* llq_errors[] = {"NO-ERROR", "SERV-FULL", "STATIC",
1730 "FORMAT-ERR", "NO-SUCH-LLQ", "BAD-VERS", "UNKNOWN_ERR"};
1731 const unsigned int llq_errors_num = 7;
1732 const char* llq_opcodes[] = {"LLQ-SETUP", "LLQ-REFRESH", "LLQ-EVENT"};
1733 const unsigned int llq_opcodes_num = 3;
1734 uint16_t version, llq_opcode, error_code;
1736 uint32_t lease_life; /* Requested or granted life of LLQ, in seconds */
1739 /* read the record */
1741 w += sldns_str_print(s, sl, "malformed LLQ ");
1742 w += print_hex_buf(s, sl, data, len);
1745 version = sldns_read_uint16(data);
1746 llq_opcode = sldns_read_uint16(data+2);
1747 error_code = sldns_read_uint16(data+4);
1748 memmove(&llq_id, data+6, sizeof(llq_id));
1749 lease_life = sldns_read_uint32(data+14);
1752 w += sldns_str_print(s, sl, "v%d ", (int)version);
1753 if(llq_opcode < llq_opcodes_num)
1754 w += sldns_str_print(s, sl, "%s", llq_opcodes[llq_opcode]);
1755 else w += sldns_str_print(s, sl, "opcode %d", (int)llq_opcode);
1756 if(error_code < llq_errors_num)
1757 w += sldns_str_print(s, sl, " %s", llq_errors[error_code]);
1758 else w += sldns_str_print(s, sl, " error %d", (int)error_code);
1760 w += sldns_str_print(s, sl, " id %llx lease-life %lu",
1761 (unsigned long long)llq_id, (unsigned long)lease_life);
1763 w += sldns_str_print(s, sl, " id %I64x lease-life %lu",
1764 (unsigned long long)llq_id, (unsigned long)lease_life);
1769 int sldns_wire2str_edns_ul_print(char** s, size_t* sl, uint8_t* data,
1775 w += sldns_str_print(s, sl, "malformed UL ");
1776 w += print_hex_buf(s, sl, data, len);
1779 lease = sldns_read_uint32(data);
1780 w += sldns_str_print(s, sl, "lease %lu", (unsigned long)lease);
1784 int sldns_wire2str_edns_nsid_print(char** s, size_t* sl, uint8_t* data,
1788 size_t i, printed=0;
1789 w += print_hex_buf(s, sl, data, len);
1790 for(i=0; i<len; i++) {
1791 if(isprint((unsigned char)data[i]) || data[i] == '\t') {
1793 w += sldns_str_print(s, sl, " (");
1796 w += sldns_str_print(s, sl, "%c", (char)data[i]);
1800 w += sldns_str_print(s, sl, ")");
1804 int sldns_wire2str_edns_dau_print(char** s, size_t* sl, uint8_t* data,
1807 sldns_lookup_table *lt;
1810 for(i=0; i<len; i++) {
1811 lt = sldns_lookup_by_id(sldns_algorithms, (int)data[i]);
1813 w += sldns_str_print(s, sl, " %s", lt->name);
1814 else w += sldns_str_print(s, sl, " %d", (int)data[i]);
1819 int sldns_wire2str_edns_dhu_print(char** s, size_t* sl, uint8_t* data,
1822 sldns_lookup_table *lt;
1825 for(i=0; i<len; i++) {
1826 lt = sldns_lookup_by_id(sldns_hashes, (int)data[i]);
1828 w += sldns_str_print(s, sl, " %s", lt->name);
1829 else w += sldns_str_print(s, sl, " %d", (int)data[i]);
1834 int sldns_wire2str_edns_n3u_print(char** s, size_t* sl, uint8_t* data,
1839 for(i=0; i<len; i++) {
1841 w += sldns_str_print(s, sl, " SHA1");
1842 else w += sldns_str_print(s, sl, " %d", (int)data[i]);
1847 int sldns_wire2str_edns_subnet_print(char** s, size_t* sl, uint8_t* data,
1852 uint8_t source, scope;
1854 w += sldns_str_print(s, sl, "malformed subnet ");
1855 w += print_hex_buf(s, sl, data, len);
1858 family = sldns_read_uint16(data);
1865 memset(ip4, 0, sizeof(ip4));
1867 w += sldns_str_print(s, sl, "trailingdata:");
1868 w += print_hex_buf(s, sl, data+4+4, len-4-4);
1869 w += sldns_str_print(s, sl, " ");
1872 memmove(ip4, data+4, len-4);
1873 if(!inet_ntop(AF_INET, ip4, buf, (socklen_t)sizeof(buf))) {
1874 w += sldns_str_print(s, sl, "ip4ntoperror ");
1875 w += print_hex_buf(s, sl, data+4+4, len-4-4);
1877 w += sldns_str_print(s, sl, "%s", buf);
1879 } else if(family == 2) {
1883 memset(ip6, 0, sizeof(ip6));
1885 w += sldns_str_print(s, sl, "trailingdata:");
1886 w += print_hex_buf(s, sl, data+4+16, len-4-16);
1887 w += sldns_str_print(s, sl, " ");
1890 memmove(ip6, data+4, len-4);
1892 if(!inet_ntop(AF_INET6, ip6, buf, (socklen_t)sizeof(buf))) {
1893 w += sldns_str_print(s, sl, "ip6ntoperror ");
1894 w += print_hex_buf(s, sl, data+4+4, len-4-4);
1896 w += sldns_str_print(s, sl, "%s", buf);
1899 w += print_hex_buf(s, sl, data+4+4, len-4-4);
1903 w += sldns_str_print(s, sl, "family %d ",
1905 w += print_hex_buf(s, sl, data, len);
1907 w += sldns_str_print(s, sl, "/%d scope /%d", (int)source, (int)scope);
1911 static int sldns_wire2str_edns_keepalive_print(char** s, size_t* sl, uint8_t* data,
1916 if(!(len == 0 || len == 2)) {
1917 w += sldns_str_print(s, sl, "malformed keepalive ");
1918 w += print_hex_buf(s, sl, data, len);
1922 w += sldns_str_print(s, sl, "no timeout value (only valid for client option) ");
1924 timeout = sldns_read_uint16(data);
1925 w += sldns_str_print(s, sl, "timeout value in units of 100ms %u", (int)timeout);
1930 int sldns_wire2str_edns_option_print(char** s, size_t* sl,
1931 uint16_t option_code, uint8_t* optdata, size_t optlen)
1934 w += sldns_wire2str_edns_option_code_print(s, sl, option_code);
1935 w += sldns_str_print(s, sl, ": ");
1936 switch(option_code) {
1938 w += sldns_wire2str_edns_llq_print(s, sl, optdata, optlen);
1941 w += sldns_wire2str_edns_ul_print(s, sl, optdata, optlen);
1943 case LDNS_EDNS_NSID:
1944 w += sldns_wire2str_edns_nsid_print(s, sl, optdata, optlen);
1947 w += sldns_wire2str_edns_dau_print(s, sl, optdata, optlen);
1950 w += sldns_wire2str_edns_dhu_print(s, sl, optdata, optlen);
1953 w += sldns_wire2str_edns_n3u_print(s, sl, optdata, optlen);
1955 case LDNS_EDNS_CLIENT_SUBNET:
1956 w += sldns_wire2str_edns_subnet_print(s, sl, optdata, optlen);
1958 case LDNS_EDNS_KEEPALIVE:
1959 w += sldns_wire2str_edns_keepalive_print(s, sl, optdata, optlen);
1961 case LDNS_EDNS_PADDING:
1962 w += print_hex_buf(s, sl, optdata, optlen);
1965 /* unknown option code */
1966 w += print_hex_buf(s, sl, optdata, optlen);
1972 /** print the edns options to string */
1974 print_edns_opts(char** s, size_t* sl, uint8_t* rdata, size_t rdatalen)
1976 uint16_t option_code, option_len;
1978 while(rdatalen > 0) {
1981 w += sldns_str_print(s, sl, " ; malformed: ");
1982 w += print_hex_buf(s, sl, rdata, rdatalen);
1985 option_code = sldns_read_uint16(rdata);
1986 option_len = sldns_read_uint16(rdata+2);
1991 if(rdatalen < (size_t)option_len) {
1992 w += sldns_str_print(s, sl, " ; malformed ");
1993 w += sldns_wire2str_edns_option_code_print(s, sl,
1995 w += sldns_str_print(s, sl, ": ");
1996 w += print_hex_buf(s, sl, rdata, rdatalen);
1999 w += sldns_str_print(s, sl, " ; ");
2000 w += sldns_wire2str_edns_option_print(s, sl, option_code,
2002 rdata += option_len;
2003 rdatalen -= option_len;
2008 int sldns_wire2str_edns_scan(uint8_t** data, size_t* data_len, char** str,
2009 size_t* str_len, uint8_t* pkt, size_t pktlen)
2012 uint8_t ext_rcode, edns_version;
2013 uint16_t udpsize, edns_bits, rdatalen;
2014 w += sldns_str_print(str, str_len, "; EDNS:");
2016 /* some input checks, domain name */
2017 if(*data_len < 1+10)
2018 return w + print_remainder_hex("Error malformed 0x",
2019 data, data_len, str, str_len);
2021 return w + print_remainder_hex("Error nonrootdname 0x",
2022 data, data_len, str, str_len);
2027 /* check type and read fixed contents */
2028 if(sldns_read_uint16((*data)) != LDNS_RR_TYPE_OPT) {
2029 return w + print_remainder_hex("Error nottypeOPT 0x",
2030 data, data_len, str, str_len);
2032 udpsize = sldns_read_uint16((*data)+2);
2033 ext_rcode = (*data)[4];
2034 edns_version = (*data)[5];
2035 edns_bits = sldns_read_uint16((*data)+6);
2036 rdatalen = sldns_read_uint16((*data)+8);
2040 w += sldns_str_print(str, str_len, " version: %u;",
2041 (unsigned)edns_version);
2042 w += sldns_str_print(str, str_len, " flags:");
2043 if((edns_bits & LDNS_EDNS_MASK_DO_BIT))
2044 w += sldns_str_print(str, str_len, " do");
2045 /* the extended rcode is the value set, shifted four bits,
2046 * and or'd with the original rcode */
2048 int rc = ((int)ext_rcode)<<4;
2049 if(pkt && pktlen >= LDNS_HEADER_SIZE)
2050 rc |= LDNS_RCODE_WIRE(pkt);
2051 w += sldns_str_print(str, str_len, " ; ext-rcode: %d", rc);
2053 w += sldns_str_print(str, str_len, " ; udp: %u", (unsigned)udpsize);
2056 if((size_t)*data_len < rdatalen) {
2057 w += sldns_str_print(str, str_len,
2058 " ; Error EDNS rdata too short; ");
2059 rdatalen = (uint16_t)*data_len;
2061 w += print_edns_opts(str, str_len, *data, rdatalen);
2062 (*data) += rdatalen;
2063 (*data_len) -= rdatalen;
2065 w += sldns_str_print(str, str_len, "\n");