2 * Copyright (C) 2004-2008 Internet Systems Consortium, Inc. ("ISC")
3 * Copyright (C) 1998-2003 Internet Software Consortium.
5 * Permission to use, copy, modify, and/or distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
9 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
10 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
11 * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
12 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
13 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
14 * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
15 * PERFORMANCE OF THIS SOFTWARE.
18 /* $Id: rcode.c,v 1.8 2008/09/25 04:02:38 tbox Exp $ */
23 #include <isc/buffer.h>
24 #include <isc/parseint.h>
25 #include <isc/print.h>
26 #include <isc/region.h>
27 #include <isc/result.h>
28 #include <isc/stdio.h>
29 #include <isc/stdlib.h>
30 #include <isc/string.h>
31 #include <isc/types.h>
35 #include <dns/keyflags.h>
36 #include <dns/keyvalues.h>
37 #include <dns/rcode.h>
38 #include <dns/rdataclass.h>
39 #include <dns/result.h>
40 #include <dns/secalg.h>
41 #include <dns/secproto.h>
45 isc_result_t _r = (x); \
46 if (_r != ISC_R_SUCCESS) \
50 #define NUMBERSIZE sizeof("037777777777") /* 2^32-1 octal + NUL */
53 /* standard rcodes */ \
54 { dns_rcode_noerror, "NOERROR", 0}, \
55 { dns_rcode_formerr, "FORMERR", 0}, \
56 { dns_rcode_servfail, "SERVFAIL", 0}, \
57 { dns_rcode_nxdomain, "NXDOMAIN", 0}, \
58 { dns_rcode_notimp, "NOTIMP", 0}, \
59 { dns_rcode_refused, "REFUSED", 0}, \
60 { dns_rcode_yxdomain, "YXDOMAIN", 0}, \
61 { dns_rcode_yxrrset, "YXRRSET", 0}, \
62 { dns_rcode_nxrrset, "NXRRSET", 0}, \
63 { dns_rcode_notauth, "NOTAUTH", 0}, \
64 { dns_rcode_notzone, "NOTZONE", 0},
67 /* extended rcodes */ \
68 { dns_rcode_badvers, "BADVERS", 0}, \
71 #define TSIGRCODENAMES \
72 /* extended rcodes */ \
73 { dns_tsigerror_badsig, "BADSIG", 0}, \
74 { dns_tsigerror_badkey, "BADKEY", 0}, \
75 { dns_tsigerror_badtime, "BADTIME", 0}, \
76 { dns_tsigerror_badmode, "BADMODE", 0}, \
77 { dns_tsigerror_badname, "BADNAME", 0}, \
78 { dns_tsigerror_badalg, "BADALG", 0}, \
79 { dns_tsigerror_badtrunc, "BADTRUNC", 0}, \
82 /* RFC2538 section 2.1 */
92 /* RFC2535 section 7, RFC3110 */
95 { DNS_KEYALG_RSAMD5, "RSAMD5", 0 }, \
96 { DNS_KEYALG_RSAMD5, "RSA", 0 }, \
97 { DNS_KEYALG_DH, "DH", 0 }, \
98 { DNS_KEYALG_DSA, "DSA", 0 }, \
99 { DNS_KEYALG_NSEC3DSA, "NSEC3DSA", 0 }, \
100 { DNS_KEYALG_ECC, "ECC", 0 }, \
101 { DNS_KEYALG_RSASHA1, "RSASHA1", 0 }, \
102 { DNS_KEYALG_NSEC3RSASHA1, "NSEC3RSASHA1", 0 }, \
103 { DNS_KEYALG_INDIRECT, "INDIRECT", 0 }, \
104 { DNS_KEYALG_PRIVATEDNS, "PRIVATEDNS", 0 }, \
105 { DNS_KEYALG_PRIVATEOID, "PRIVATEOID", 0 }, \
108 /* RFC2535 section 7.1 */
110 #define SECPROTONAMES \
114 { 3, "DNSSEC", 0 }, \
119 #define HASHALGNAMES \
129 static struct tbl rcodes[] = { RCODENAMES ERCODENAMES };
130 static struct tbl tsigrcodes[] = { RCODENAMES TSIGRCODENAMES };
131 static struct tbl certs[] = { CERTNAMES };
132 static struct tbl secalgs[] = { SECALGNAMES };
133 static struct tbl secprotos[] = { SECPROTONAMES };
134 static struct tbl hashalgs[] = { HASHALGNAMES };
136 static struct keyflag {
141 { "NOCONF", 0x4000, 0xC000 },
142 { "NOAUTH", 0x8000, 0xC000 },
143 { "NOKEY", 0xC000, 0xC000 },
144 { "FLAG2", 0x2000, 0x2000 },
145 { "EXTEND", 0x1000, 0x1000 },
146 { "FLAG4", 0x0800, 0x0800 },
147 { "FLAG5", 0x0400, 0x0400 },
148 { "USER", 0x0000, 0x0300 },
149 { "ZONE", 0x0100, 0x0300 },
150 { "HOST", 0x0200, 0x0300 },
151 { "NTYP3", 0x0300, 0x0300 },
152 { "FLAG8", 0x0080, 0x0080 },
153 { "FLAG9", 0x0040, 0x0040 },
154 { "FLAG10", 0x0020, 0x0020 },
155 { "FLAG11", 0x0010, 0x0010 },
156 { "SIG0", 0x0000, 0x000F },
157 { "SIG1", 0x0001, 0x000F },
158 { "SIG2", 0x0002, 0x000F },
159 { "SIG3", 0x0003, 0x000F },
160 { "SIG4", 0x0004, 0x000F },
161 { "SIG5", 0x0005, 0x000F },
162 { "SIG6", 0x0006, 0x000F },
163 { "SIG7", 0x0007, 0x000F },
164 { "SIG8", 0x0008, 0x000F },
165 { "SIG9", 0x0009, 0x000F },
166 { "SIG10", 0x000A, 0x000F },
167 { "SIG11", 0x000B, 0x000F },
168 { "SIG12", 0x000C, 0x000F },
169 { "SIG13", 0x000D, 0x000F },
170 { "SIG14", 0x000E, 0x000F },
171 { "SIG15", 0x000F, 0x000F },
172 { "KSK", DNS_KEYFLAG_KSK, DNS_KEYFLAG_KSK },
177 str_totext(const char *source, isc_buffer_t *target) {
181 isc_buffer_availableregion(target, ®ion);
184 if (l > region.length)
185 return (ISC_R_NOSPACE);
187 memcpy(region.base, source, l);
188 isc_buffer_add(target, l);
189 return (ISC_R_SUCCESS);
193 maybe_numeric(unsigned int *valuep, isc_textregion_t *source,
194 unsigned int max, isc_boolean_t hex_allowed)
198 char buffer[NUMBERSIZE];
200 if (! isdigit(source->base[0] & 0xff) ||
201 source->length > NUMBERSIZE - 1)
202 return (ISC_R_BADNUMBER);
205 * We have a potential number. Try to parse it with
206 * isc_parse_uint32(). isc_parse_uint32() requires
207 * null termination, so we must make a copy.
209 strncpy(buffer, source->base, NUMBERSIZE);
210 INSIST(buffer[source->length] == '\0');
212 result = isc_parse_uint32(&n, buffer, 10);
213 if (result == ISC_R_BADNUMBER && hex_allowed)
214 result = isc_parse_uint32(&n, buffer, 16);
215 if (result != ISC_R_SUCCESS)
218 return (ISC_R_RANGE);
220 return (ISC_R_SUCCESS);
224 dns_mnemonic_fromtext(unsigned int *valuep, isc_textregion_t *source,
225 struct tbl *table, unsigned int max)
230 result = maybe_numeric(valuep, source, max, ISC_FALSE);
231 if (result != ISC_R_BADNUMBER)
234 for (i = 0; table[i].name != NULL; i++) {
236 n = strlen(table[i].name);
237 if (n == source->length &&
238 strncasecmp(source->base, table[i].name, n) == 0) {
239 *valuep = table[i].value;
240 return (ISC_R_SUCCESS);
243 return (DNS_R_UNKNOWN);
247 dns_mnemonic_totext(unsigned int value, isc_buffer_t *target,
251 char buf[sizeof("4294967296")];
252 while (table[i].name != NULL) {
253 if (table[i].value == value) {
254 return (str_totext(table[i].name, target));
258 snprintf(buf, sizeof(buf), "%u", value);
259 return (str_totext(buf, target));
263 dns_rcode_fromtext(dns_rcode_t *rcodep, isc_textregion_t *source) {
265 RETERR(dns_mnemonic_fromtext(&value, source, rcodes, 0xffff));
267 return (ISC_R_SUCCESS);
271 dns_rcode_totext(dns_rcode_t rcode, isc_buffer_t *target) {
272 return (dns_mnemonic_totext(rcode, target, rcodes));
276 dns_tsigrcode_fromtext(dns_rcode_t *rcodep, isc_textregion_t *source) {
278 RETERR(dns_mnemonic_fromtext(&value, source, tsigrcodes, 0xffff));
280 return (ISC_R_SUCCESS);
284 dns_tsigrcode_totext(dns_rcode_t rcode, isc_buffer_t *target) {
285 return (dns_mnemonic_totext(rcode, target, tsigrcodes));
289 dns_cert_fromtext(dns_cert_t *certp, isc_textregion_t *source) {
291 RETERR(dns_mnemonic_fromtext(&value, source, certs, 0xffff));
293 return (ISC_R_SUCCESS);
297 dns_cert_totext(dns_cert_t cert, isc_buffer_t *target) {
298 return (dns_mnemonic_totext(cert, target, certs));
302 dns_secalg_fromtext(dns_secalg_t *secalgp, isc_textregion_t *source) {
304 RETERR(dns_mnemonic_fromtext(&value, source, secalgs, 0xff));
306 return (ISC_R_SUCCESS);
310 dns_secalg_totext(dns_secalg_t secalg, isc_buffer_t *target) {
311 return (dns_mnemonic_totext(secalg, target, secalgs));
315 dns_secproto_fromtext(dns_secproto_t *secprotop, isc_textregion_t *source) {
317 RETERR(dns_mnemonic_fromtext(&value, source, secprotos, 0xff));
319 return (ISC_R_SUCCESS);
323 dns_secproto_totext(dns_secproto_t secproto, isc_buffer_t *target) {
324 return (dns_mnemonic_totext(secproto, target, secprotos));
328 dns_hashalg_fromtext(unsigned char *hashalg, isc_textregion_t *source) {
330 RETERR(dns_mnemonic_fromtext(&value, source, hashalgs, 0xff));
332 return (ISC_R_SUCCESS);
336 dns_keyflags_fromtext(dns_keyflags_t *flagsp, isc_textregion_t *source)
340 unsigned int value, mask;
342 result = maybe_numeric(&value, source, 0xffff, ISC_TRUE);
343 if (result == ISC_R_SUCCESS) {
345 return (ISC_R_SUCCESS);
347 if (result != ISC_R_BADNUMBER)
351 end = source->base + source->length;
357 char *delim = memchr(text, '|', end - text);
362 for (p = keyflags; p->name != NULL; p++) {
363 if (strncasecmp(p->name, text, len) == 0)
367 return (DNS_R_UNKNOWNFLAG);
370 if ((mask & p->mask) != 0)
371 warn("overlapping key flags");
376 text++; /* Skip "|" */
379 return (ISC_R_SUCCESS);
383 * This uses lots of hard coded values, but how often do we actually
387 dns_rdataclass_fromtext(dns_rdataclass_t *classp, isc_textregion_t *source) {
388 #define COMPARE(string, rdclass) \
389 if (((sizeof(string) - 1) == source->length) \
390 && (strncasecmp(source->base, string, source->length) == 0)) { \
392 return (ISC_R_SUCCESS); \
395 switch (tolower((unsigned char)source->base[0])) {
397 COMPARE("any", dns_rdataclass_any);
401 * RFC1035 says the mnemonic for the CHAOS class is CH,
402 * but historical BIND practice is to call it CHAOS.
403 * We will accept both forms, but only generate CH.
405 COMPARE("ch", dns_rdataclass_chaos);
406 COMPARE("chaos", dns_rdataclass_chaos);
408 if (source->length > 5 &&
409 source->length < (5 + sizeof("65000")) &&
410 strncasecmp("class", source->base, 5) == 0) {
411 char buf[sizeof("65000")];
415 strncpy(buf, source->base + 5, source->length - 5);
416 buf[source->length - 5] = '\0';
417 val = strtoul(buf, &endp, 10);
418 if (*endp == '\0' && val <= 0xffff) {
419 *classp = (dns_rdataclass_t)val;
420 return (ISC_R_SUCCESS);
425 COMPARE("hs", dns_rdataclass_hs);
426 COMPARE("hesiod", dns_rdataclass_hs);
429 COMPARE("in", dns_rdataclass_in);
432 COMPARE("none", dns_rdataclass_none);
435 COMPARE("reserved0", dns_rdataclass_reserved0);
441 return (DNS_R_UNKNOWN);
445 dns_rdataclass_totext(dns_rdataclass_t rdclass, isc_buffer_t *target) {
446 char buf[sizeof("CLASS65535")];
449 case dns_rdataclass_any:
450 return (str_totext("ANY", target));
451 case dns_rdataclass_chaos:
452 return (str_totext("CH", target));
453 case dns_rdataclass_hs:
454 return (str_totext("HS", target));
455 case dns_rdataclass_in:
456 return (str_totext("IN", target));
457 case dns_rdataclass_none:
458 return (str_totext("NONE", target));
459 case dns_rdataclass_reserved0:
460 return (str_totext("RESERVED0", target));
462 snprintf(buf, sizeof(buf), "CLASS%u", rdclass);
463 return (str_totext(buf, target));
468 dns_rdataclass_format(dns_rdataclass_t rdclass,
469 char *array, unsigned int size)
474 isc_buffer_init(&buf, array, size);
475 result = dns_rdataclass_totext(rdclass, &buf);
479 if (result == ISC_R_SUCCESS) {
480 if (isc_buffer_availablelength(&buf) >= 1)
481 isc_buffer_putuint8(&buf, 0);
483 result = ISC_R_NOSPACE;
485 if (result != ISC_R_SUCCESS) {
486 snprintf(array, size, "<unknown>");
487 array[size - 1] = '\0';