diff options
Diffstat (limited to 'contrib/bind9/lib/dns/rdata/generic/naptr_35.c')
| -rw-r--r-- | contrib/bind9/lib/dns/rdata/generic/naptr_35.c | 671 |
1 files changed, 671 insertions, 0 deletions
diff --git a/contrib/bind9/lib/dns/rdata/generic/naptr_35.c b/contrib/bind9/lib/dns/rdata/generic/naptr_35.c new file mode 100644 index 000000000000..83439a59293e --- /dev/null +++ b/contrib/bind9/lib/dns/rdata/generic/naptr_35.c @@ -0,0 +1,671 @@ +/* + * Copyright (C) 2004, 2005, 2007-2009, 2011-2013 Internet Systems Consortium, Inc. ("ISC") + * Copyright (C) 1999-2001, 2003 Internet Software Consortium. + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH + * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY + * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT, + * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM + * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE + * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR + * PERFORMANCE OF THIS SOFTWARE. + */ + +/* $Id$ */ + +/* Reviewed: Thu Mar 16 16:52:50 PST 2000 by bwelling */ + +/* RFC2915 */ + +#ifndef RDATA_GENERIC_NAPTR_35_C +#define RDATA_GENERIC_NAPTR_35_C + +#define RRTYPE_NAPTR_ATTRIBUTES (0) + +#include <isc/regex.h> + +/* + * Check the wire format of the Regexp field. + * Don't allow embeded NUL's. + */ +static inline isc_result_t +txt_valid_regex(const unsigned char *txt) { + unsigned int nsub = 0; + char regex[256]; + char *cp; + isc_boolean_t flags = ISC_FALSE; + isc_boolean_t replace = ISC_FALSE; + unsigned char c; + unsigned char delim; + unsigned int len; + int n; + + len = *txt++; + if (len == 0U) + return (ISC_R_SUCCESS); + + delim = *txt++; + len--; + + /* + * Digits, backslash and flags can't be delimiters. + */ + switch (delim) { + case '0': case '1': case '2': case '3': case '4': + case '5': case '6': case '7': case '8': case '9': + case '\\': case 'i': case 0: + return (DNS_R_SYNTAX); + } + + cp = regex; + while (len-- > 0) { + c = *txt++; + if (c == 0) + return (DNS_R_SYNTAX); + if (c == delim && !replace) { + replace = ISC_TRUE; + continue; + } else if (c == delim && !flags) { + flags = ISC_TRUE; + continue; + } else if (c == delim) + return (DNS_R_SYNTAX); + /* + * Flags are not escaped. + */ + if (flags) { + switch (c) { + case 'i': + continue; + default: + return (DNS_R_SYNTAX); + } + } + if (!replace) + *cp++ = c; + if (c == '\\') { + if (len == 0) + return (DNS_R_SYNTAX); + c = *txt++; + if (c == 0) + return (DNS_R_SYNTAX); + len--; + if (replace) + switch (c) { + case '0': return (DNS_R_SYNTAX); + case '1': if (nsub < 1) nsub = 1; break; + case '2': if (nsub < 2) nsub = 2; break; + case '3': if (nsub < 3) nsub = 3; break; + case '4': if (nsub < 4) nsub = 4; break; + case '5': if (nsub < 5) nsub = 5; break; + case '6': if (nsub < 6) nsub = 6; break; + case '7': if (nsub < 7) nsub = 7; break; + case '8': if (nsub < 8) nsub = 8; break; + case '9': if (nsub < 9) nsub = 9; break; + } + if (!replace) + *cp++ = c; + } + } + if (!flags) + return (DNS_R_SYNTAX); + *cp = '\0'; + n = isc_regex_validate(regex); + if (n < 0 || nsub > (unsigned int)n) + return (DNS_R_SYNTAX); + return (ISC_R_SUCCESS); +} + +static inline isc_result_t +fromtext_naptr(ARGS_FROMTEXT) { + isc_token_t token; + dns_name_t name; + isc_buffer_t buffer; + unsigned char *regex; + + REQUIRE(type == 35); + + UNUSED(type); + UNUSED(rdclass); + UNUSED(callbacks); + + /* + * Order. + */ + RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number, + ISC_FALSE)); + if (token.value.as_ulong > 0xffffU) + RETTOK(ISC_R_RANGE); + RETERR(uint16_tobuffer(token.value.as_ulong, target)); + + /* + * Preference. + */ + RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number, + ISC_FALSE)); + if (token.value.as_ulong > 0xffffU) + RETTOK(ISC_R_RANGE); + RETERR(uint16_tobuffer(token.value.as_ulong, target)); + + /* + * Flags. + */ + RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_qstring, + ISC_FALSE)); + RETTOK(txt_fromtext(&token.value.as_textregion, target)); + + /* + * Service. + */ + RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_qstring, + ISC_FALSE)); + RETTOK(txt_fromtext(&token.value.as_textregion, target)); + + /* + * Regexp. + */ + regex = isc_buffer_used(target); + RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_qstring, + ISC_FALSE)); + RETTOK(txt_fromtext(&token.value.as_textregion, target)); + RETTOK(txt_valid_regex(regex)); + + /* + * Replacement. + */ + RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string, + ISC_FALSE)); + dns_name_init(&name, NULL); + buffer_fromregion(&buffer, &token.value.as_region); + origin = (origin != NULL) ? origin : dns_rootname; + RETTOK(dns_name_fromtext(&name, &buffer, origin, options, target)); + return (ISC_R_SUCCESS); +} + +static inline isc_result_t +totext_naptr(ARGS_TOTEXT) { + isc_region_t region; + dns_name_t name; + dns_name_t prefix; + isc_boolean_t sub; + char buf[sizeof("64000")]; + unsigned short num; + + REQUIRE(rdata->type == 35); + REQUIRE(rdata->length != 0); + + dns_name_init(&name, NULL); + dns_name_init(&prefix, NULL); + + dns_rdata_toregion(rdata, ®ion); + + /* + * Order. + */ + num = uint16_fromregion(®ion); + isc_region_consume(®ion, 2); + sprintf(buf, "%u", num); + RETERR(str_totext(buf, target)); + RETERR(str_totext(" ", target)); + + /* + * Preference. + */ + num = uint16_fromregion(®ion); + isc_region_consume(®ion, 2); + sprintf(buf, "%u", num); + RETERR(str_totext(buf, target)); + RETERR(str_totext(" ", target)); + + /* + * Flags. + */ + RETERR(txt_totext(®ion, target)); + RETERR(str_totext(" ", target)); + + /* + * Service. + */ + RETERR(txt_totext(®ion, target)); + RETERR(str_totext(" ", target)); + + /* + * Regexp. + */ + RETERR(txt_totext(®ion, target)); + RETERR(str_totext(" ", target)); + + /* + * Replacement. + */ + dns_name_fromregion(&name, ®ion); + sub = name_prefix(&name, tctx->origin, &prefix); + return (dns_name_totext(&prefix, sub, target)); +} + +static inline isc_result_t +fromwire_naptr(ARGS_FROMWIRE) { + dns_name_t name; + isc_region_t sr; + unsigned char *regex; + + REQUIRE(type == 35); + + UNUSED(type); + UNUSED(rdclass); + + dns_decompress_setmethods(dctx, DNS_COMPRESS_NONE); + + dns_name_init(&name, NULL); + + /* + * Order, preference. + */ + isc_buffer_activeregion(source, &sr); + if (sr.length < 4) + return (ISC_R_UNEXPECTEDEND); + RETERR(mem_tobuffer(target, sr.base, 4)); + isc_buffer_forward(source, 4); + + /* + * Flags. + */ + RETERR(txt_fromwire(source, target)); + + /* + * Service. + */ + RETERR(txt_fromwire(source, target)); + + /* + * Regexp. + */ + regex = isc_buffer_used(target); + RETERR(txt_fromwire(source, target)); + RETERR(txt_valid_regex(regex)); + + /* + * Replacement. + */ + return (dns_name_fromwire(&name, source, dctx, options, target)); +} + +static inline isc_result_t +towire_naptr(ARGS_TOWIRE) { + dns_name_t name; + dns_offsets_t offsets; + isc_region_t sr; + + REQUIRE(rdata->type == 35); + REQUIRE(rdata->length != 0); + + dns_compress_setmethods(cctx, DNS_COMPRESS_NONE); + /* + * Order, preference. + */ + dns_rdata_toregion(rdata, &sr); + RETERR(mem_tobuffer(target, sr.base, 4)); + isc_region_consume(&sr, 4); + + /* + * Flags. + */ + RETERR(mem_tobuffer(target, sr.base, sr.base[0] + 1)); + isc_region_consume(&sr, sr.base[0] + 1); + + /* + * Service. + */ + RETERR(mem_tobuffer(target, sr.base, sr.base[0] + 1)); + isc_region_consume(&sr, sr.base[0] + 1); + + /* + * Regexp. + */ + RETERR(mem_tobuffer(target, sr.base, sr.base[0] + 1)); + isc_region_consume(&sr, sr.base[0] + 1); + + /* + * Replacement. + */ + dns_name_init(&name, offsets); + dns_name_fromregion(&name, &sr); + return (dns_name_towire(&name, cctx, target)); +} + +static inline int +compare_naptr(ARGS_COMPARE) { + dns_name_t name1; + dns_name_t name2; + isc_region_t region1; + isc_region_t region2; + int order, len; + + REQUIRE(rdata1->type == rdata2->type); + REQUIRE(rdata1->rdclass == rdata2->rdclass); + REQUIRE(rdata1->type == 35); + REQUIRE(rdata1->length != 0); + REQUIRE(rdata2->length != 0); + + dns_rdata_toregion(rdata1, ®ion1); + dns_rdata_toregion(rdata2, ®ion2); + + /* + * Order, preference. + */ + order = memcmp(region1.base, region2.base, 4); + if (order != 0) + return (order < 0 ? -1 : 1); + isc_region_consume(®ion1, 4); + isc_region_consume(®ion2, 4); + + /* + * Flags. + */ + len = ISC_MIN(region1.base[0], region2.base[0]); + order = memcmp(region1.base, region2.base, len + 1); + if (order != 0) + return (order < 0 ? -1 : 1); + isc_region_consume(®ion1, region1.base[0] + 1); + isc_region_consume(®ion2, region2.base[0] + 1); + + /* + * Service. + */ + len = ISC_MIN(region1.base[0], region2.base[0]); + order = memcmp(region1.base, region2.base, len + 1); + if (order != 0) + return (order < 0 ? -1 : 1); + isc_region_consume(®ion1, region1.base[0] + 1); + isc_region_consume(®ion2, region2.base[0] + 1); + + /* + * Regexp. + */ + len = ISC_MIN(region1.base[0], region2.base[0]); + order = memcmp(region1.base, region2.base, len + 1); + if (order != 0) + return (order < 0 ? -1 : 1); + isc_region_consume(®ion1, region1.base[0] + 1); + isc_region_consume(®ion2, region2.base[0] + 1); + + /* + * Replacement. + */ + dns_name_init(&name1, NULL); + dns_name_init(&name2, NULL); + + dns_name_fromregion(&name1, ®ion1); + dns_name_fromregion(&name2, ®ion2); + + return (dns_name_rdatacompare(&name1, &name2)); +} + +static inline isc_result_t +fromstruct_naptr(ARGS_FROMSTRUCT) { + dns_rdata_naptr_t *naptr = source; + isc_region_t region; + + REQUIRE(type == 35); + REQUIRE(source != NULL); + REQUIRE(naptr->common.rdtype == type); + REQUIRE(naptr->common.rdclass == rdclass); + REQUIRE(naptr->flags != NULL || naptr->flags_len == 0); + REQUIRE(naptr->service != NULL || naptr->service_len == 0); + REQUIRE(naptr->regexp != NULL || naptr->regexp_len == 0); + + UNUSED(type); + UNUSED(rdclass); + + RETERR(uint16_tobuffer(naptr->order, target)); + RETERR(uint16_tobuffer(naptr->preference, target)); + RETERR(uint8_tobuffer(naptr->flags_len, target)); + RETERR(mem_tobuffer(target, naptr->flags, naptr->flags_len)); + RETERR(uint8_tobuffer(naptr->service_len, target)); + RETERR(mem_tobuffer(target, naptr->service, naptr->service_len)); + RETERR(uint8_tobuffer(naptr->regexp_len, target)); + RETERR(mem_tobuffer(target, naptr->regexp, naptr->regexp_len)); + dns_name_toregion(&naptr->replacement, ®ion); + return (isc_buffer_copyregion(target, ®ion)); +} + +static inline isc_result_t +tostruct_naptr(ARGS_TOSTRUCT) { + dns_rdata_naptr_t *naptr = target; + isc_region_t r; + isc_result_t result; + dns_name_t name; + + REQUIRE(rdata->type == 35); + REQUIRE(target != NULL); + REQUIRE(rdata->length != 0); + + naptr->common.rdclass = rdata->rdclass; + naptr->common.rdtype = rdata->type; + ISC_LINK_INIT(&naptr->common, link); + + naptr->flags = NULL; + naptr->service = NULL; + naptr->regexp = NULL; + + dns_rdata_toregion(rdata, &r); + + naptr->order = uint16_fromregion(&r); + isc_region_consume(&r, 2); + + naptr->preference = uint16_fromregion(&r); + isc_region_consume(&r, 2); + + naptr->flags_len = uint8_fromregion(&r); + isc_region_consume(&r, 1); + INSIST(naptr->flags_len <= r.length); + naptr->flags = mem_maybedup(mctx, r.base, naptr->flags_len); + if (naptr->flags == NULL) + goto cleanup; + isc_region_consume(&r, naptr->flags_len); + + naptr->service_len = uint8_fromregion(&r); + isc_region_consume(&r, 1); + INSIST(naptr->service_len <= r.length); + naptr->service = mem_maybedup(mctx, r.base, naptr->service_len); + if (naptr->service == NULL) + goto cleanup; + isc_region_consume(&r, naptr->service_len); + + naptr->regexp_len = uint8_fromregion(&r); + isc_region_consume(&r, 1); + INSIST(naptr->regexp_len <= r.length); + naptr->regexp = mem_maybedup(mctx, r.base, naptr->regexp_len); + if (naptr->regexp == NULL) + goto cleanup; + isc_region_consume(&r, naptr->regexp_len); + + dns_name_init(&name, NULL); + dns_name_fromregion(&name, &r); + dns_name_init(&naptr->replacement, NULL); + result = name_duporclone(&name, mctx, &naptr->replacement); + if (result != ISC_R_SUCCESS) + goto cleanup; + naptr->mctx = mctx; + return (ISC_R_SUCCESS); + + cleanup: + if (mctx != NULL && naptr->flags != NULL) + isc_mem_free(mctx, naptr->flags); + if (mctx != NULL && naptr->service != NULL) + isc_mem_free(mctx, naptr->service); + if (mctx != NULL && naptr->regexp != NULL) + isc_mem_free(mctx, naptr->regexp); + return (ISC_R_NOMEMORY); +} + +static inline void +freestruct_naptr(ARGS_FREESTRUCT) { + dns_rdata_naptr_t *naptr = source; + + REQUIRE(source != NULL); + REQUIRE(naptr->common.rdtype == 35); + + if (naptr->mctx == NULL) + return; + + if (naptr->flags != NULL) + isc_mem_free(naptr->mctx, naptr->flags); + if (naptr->service != NULL) + isc_mem_free(naptr->mctx, naptr->service); + if (naptr->regexp != NULL) + isc_mem_free(naptr->mctx, naptr->regexp); + dns_name_free(&naptr->replacement, naptr->mctx); + naptr->mctx = NULL; +} + +static inline isc_result_t +additionaldata_naptr(ARGS_ADDLDATA) { + dns_name_t name; + dns_offsets_t offsets; + isc_region_t sr; + dns_rdatatype_t atype; + unsigned int i, flagslen; + char *cp; + + REQUIRE(rdata->type == 35); + + /* + * Order, preference. + */ + dns_rdata_toregion(rdata, &sr); + isc_region_consume(&sr, 4); + + /* + * Flags. + */ + atype = 0; + flagslen = sr.base[0]; + cp = (char *)&sr.base[1]; + for (i = 0; i < flagslen; i++, cp++) { + if (*cp == 'S' || *cp == 's') { + atype = dns_rdatatype_srv; + break; + } + if (*cp == 'A' || *cp == 'a') { + atype = dns_rdatatype_a; + break; + } + } + isc_region_consume(&sr, flagslen + 1); + + /* + * Service. + */ + isc_region_consume(&sr, sr.base[0] + 1); + + /* + * Regexp. + */ + isc_region_consume(&sr, sr.base[0] + 1); + + /* + * Replacement. + */ + dns_name_init(&name, offsets); + dns_name_fromregion(&name, &sr); + + if (atype != 0) + return ((add)(arg, &name, atype)); + + return (ISC_R_SUCCESS); +} + +static inline isc_result_t +digest_naptr(ARGS_DIGEST) { + isc_region_t r1, r2; + unsigned int length, n; + isc_result_t result; + dns_name_t name; + + REQUIRE(rdata->type == 35); + + dns_rdata_toregion(rdata, &r1); + r2 = r1; + length = 0; + + /* + * Order, preference. + */ + length += 4; + isc_region_consume(&r2, 4); + + /* + * Flags. + */ + n = r2.base[0] + 1; + length += n; + isc_region_consume(&r2, n); + + /* + * Service. + */ + n = r2.base[0] + 1; + length += n; + isc_region_consume(&r2, n); + + /* + * Regexp. + */ + n = r2.base[0] + 1; + length += n; + isc_region_consume(&r2, n); + + /* + * Digest the RR up to the replacement name. + */ + r1.length = length; + result = (digest)(arg, &r1); + if (result != ISC_R_SUCCESS) + return (result); + + /* + * Replacement. + */ + + dns_name_init(&name, NULL); + dns_name_fromregion(&name, &r2); + + return (dns_name_digest(&name, digest, arg)); +} + +static inline isc_boolean_t +checkowner_naptr(ARGS_CHECKOWNER) { + + REQUIRE(type == 35); + + UNUSED(name); + UNUSED(type); + UNUSED(rdclass); + UNUSED(wildcard); + + return (ISC_TRUE); +} + +static inline isc_boolean_t +checknames_naptr(ARGS_CHECKNAMES) { + + REQUIRE(rdata->type == 35); + + UNUSED(rdata); + UNUSED(owner); + UNUSED(bad); + + return (ISC_TRUE); +} + +static inline int +casecompare_naptr(ARGS_COMPARE) { + return (compare_naptr(rdata1, rdata2)); +} + +#endif /* RDATA_GENERIC_NAPTR_35_C */ |