--- /dev/null
+/*
+ * Copyright (C) 2002 Internet Software Consortium.
+ *
+ * Permission to use, copy, modify, and 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 INTERNET SOFTWARE CONSORTIUM
+ * DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
+ * INTERNET SOFTWARE CONSORTIUM 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: apl_42.c,v 1.1 2002/03/06 07:41:25 marka Exp $ */
+
+/* RFC 3123 */
+
+#ifndef RDATA_IN_1_ALP_42_C
+#define RDATA_IN_1_ALP_42_C
+
+#define RRTYPE_APL_ATTRIBUTES (0)
+
+static inline isc_result_t
+fromtext_in_apl(ARGS_FROMTEXT) {
+ isc_token_t token;
+ unsigned char addr[16];
+ isc_uint16_t afi;
+ isc_uint8_t prefix;
+ isc_uint8_t len;
+ isc_boolean_t neg;
+ char *cp, *ap, *slash;
+
+ REQUIRE(type == 42);
+ REQUIRE(rdclass == 1);
+
+ UNUSED(type);
+ UNUSED(rdclass);
+ UNUSED(origin);
+ UNUSED(downcase);
+ UNUSED(callbacks);
+
+ do {
+ RETERR(isc_lex_getmastertoken(lexer, &token,
+ isc_tokentype_string, ISC_TRUE));
+ if (token.type != isc_tokentype_string)
+ break;
+
+ cp = DNS_AS_STR(token);
+ neg = ISC_TF(*cp == '!');
+ if (neg)
+ cp++;
+ afi = strtoul(cp, &ap, 10);
+ if (*ap++ != ':' || cp == ap)
+ RETTOK(DNS_R_SYNTAX);
+ if (afi > 0xffff)
+ RETTOK(ISC_R_RANGE);
+ slash = strchr(ap, '/');
+ if (slash == NULL || slash == ap)
+ RETTOK(DNS_R_SYNTAX);
+ *slash++ = '\0';
+ prefix = strtoul(slash, &cp, 10);
+ if (*cp != '\0' || slash == cp)
+ RETTOK(DNS_R_SYNTAX);
+ switch (afi) {
+ case 1:
+ if (inet_pton(AF_INET, ap, addr) != 1)
+ RETTOK(DNS_R_BADDOTTEDQUAD);
+ if (prefix > 32)
+ RETTOK(ISC_R_RANGE);
+ for (len = 4; len > 0; len--)
+ if (addr[len - 1] != 0)
+ break;
+ break;
+
+ case 2:
+ if (inet_pton(AF_INET6, ap, addr) != 1)
+ RETTOK(DNS_R_BADAAAA);
+ if (prefix > 128)
+ RETTOK(ISC_R_RANGE);
+ for (len = 16; len > 0; len--)
+ if (addr[len - 1] != 0)
+ break;
+ break;
+
+ default:
+ RETTOK(ISC_R_NOTIMPLEMENTED);
+ }
+ RETERR(uint16_tobuffer(afi, target));
+ RETERR(uint8_tobuffer(prefix, target));
+ RETERR(uint8_tobuffer(len | ((neg) ? 0x80 : 0), target));
+ RETERR(mem_tobuffer(target, addr, len));
+ } while (1);
+
+ /*
+ * Let upper layer handle eol/eof.
+ */
+ isc_lex_ungettoken(lexer, &token);
+
+ return (ISC_R_SUCCESS);
+}
+
+static inline isc_result_t
+totext_in_apl(ARGS_TOTEXT) {
+ isc_region_t sr;
+ isc_region_t ir;
+ isc_uint16_t afi;
+ isc_uint8_t prefix;
+ isc_uint8_t len;
+ isc_boolean_t neg;
+ char buf[16];
+ const char *sep = "";
+ int n;
+
+ REQUIRE(rdata->type == 42);
+ REQUIRE(rdata->rdclass == 1);
+
+ UNUSED(tctx);
+
+ dns_rdata_toregion(rdata, &sr);
+ ir.base = buf;
+ ir.length = sizeof(buf);
+
+ while (sr.length > 0) {
+ INSIST(sr.length >= 4);
+ afi = uint16_fromregion(&sr);
+ isc_region_consume(&sr, 2);
+ prefix = *sr.base;
+ isc_region_consume(&sr, 1);
+ len = (*sr.base & 0x7f);
+ neg = ISC_TF((*sr.base & 0x80) != 0);
+ isc_region_consume(&sr, 1);
+ INSIST(len <= sr.length);
+ n = snprintf(buf, sizeof(buf), "%s%s%u:", sep,
+ neg ? "!": "", afi);
+ INSIST(n < (int)sizeof(buf));
+ RETERR(str_totext(buf, target));
+ switch (afi) {
+ case 1:
+ INSIST(len <= 4);
+ INSIST(prefix <= 32);
+ memset(buf, 0, sizeof(buf));
+ memcpy(buf, sr.base, len);
+ RETERR(inet_totext(AF_INET, &ir, target));
+ break;
+
+ case 2:
+ INSIST(len <= 16);
+ INSIST(prefix <= 128);
+ memset(buf, 0, sizeof(buf));
+ memcpy(buf, sr.base, len);
+ RETERR(inet_totext(AF_INET6, &ir, target));
+ break;
+
+ default:
+ return (ISC_R_NOTIMPLEMENTED);
+ }
+ n = snprintf(buf, sizeof(buf), "/%u", prefix);
+ INSIST(n < (int)sizeof(buf));
+ RETERR(str_totext(buf, target));
+ isc_region_consume(&sr, len);
+ sep = " ";
+ }
+ return (ISC_R_SUCCESS);
+}
+
+static inline isc_result_t
+fromwire_in_apl(ARGS_FROMWIRE) {
+ isc_region_t sr, sr2;
+ isc_region_t tr;
+ isc_uint16_t afi;
+ isc_uint8_t prefix;
+ isc_uint8_t len;
+
+ REQUIRE(type == 42);
+ REQUIRE(rdclass == 1);
+
+ UNUSED(type);
+ UNUSED(dctx);
+ UNUSED(rdclass);
+ UNUSED(downcase);
+
+ isc_buffer_activeregion(source, &sr);
+ isc_buffer_availableregion(target, &tr);
+ if (sr.length > tr.length)
+ return (ISC_R_NOSPACE);
+ sr2 = sr;
+
+ /* Zero or more items */
+ while (sr.length > 0) {
+ if (sr.length < 4)
+ return (ISC_R_UNEXPECTEDEND);
+ afi = uint16_fromregion(&sr);
+ isc_region_consume(&sr, 2);
+ prefix = *sr.base;
+ isc_region_consume(&sr, 1);
+ len = (*sr.base & 0x7f);
+ isc_region_consume(&sr, 1);
+ if (len > sr.length)
+ return (ISC_R_UNEXPECTEDEND);
+ switch (afi) {
+ case 1:
+ if (prefix > 32 || len > 4)
+ return (ISC_R_RANGE);
+ break;
+ case 2:
+ if (prefix > 128 || len > 16)
+ return (ISC_R_RANGE);
+ }
+ if (len > 0 && sr.base[len - 1] == 0)
+ return (DNS_R_FORMERR);
+ isc_region_consume(&sr, len);
+ }
+ isc_buffer_forward(source, sr2.length);
+ return (mem_tobuffer(target, sr2.base, sr2.length));
+}
+
+static inline isc_result_t
+towire_in_apl(ARGS_TOWIRE) {
+ UNUSED(cctx);
+
+ REQUIRE(rdata->type == 42);
+ REQUIRE(rdata->rdclass == 1);
+
+ return (mem_tobuffer(target, rdata->data, rdata->length));
+}
+
+static inline int
+compare_in_apl(ARGS_COMPARE) {
+ isc_region_t r1;
+ isc_region_t r2;
+
+ REQUIRE(rdata1->type == rdata2->type);
+ REQUIRE(rdata1->rdclass == rdata2->rdclass);
+ REQUIRE(rdata1->type == 42);
+ REQUIRE(rdata1->rdclass == 1);
+
+ dns_rdata_toregion(rdata1, &r1);
+ dns_rdata_toregion(rdata2, &r2);
+ return (isc_region_compare(&r1, &r2));
+}
+
+static inline isc_result_t
+fromstruct_in_apl(ARGS_FROMSTRUCT) {
+ dns_rdata_in_apl_t *apl = source;
+ isc_buffer_t b;
+
+ REQUIRE(type == 42);
+ REQUIRE(rdclass == 1);
+ REQUIRE(source != NULL);
+ REQUIRE(apl->common.rdtype == type);
+ REQUIRE(apl->common.rdclass == rdclass);
+ REQUIRE(apl->apl != NULL || apl->apl_len == 0);
+
+ isc_buffer_init(&b, apl->apl, apl->apl_len);
+ isc_buffer_add(&b, apl->apl_len);
+ isc_buffer_setactive(&b, apl->apl_len);
+ return(fromwire_in_apl(rdclass, type, &b, NULL, ISC_FALSE, target));
+}
+
+static inline isc_result_t
+tostruct_in_apl(ARGS_TOSTRUCT) {
+ dns_rdata_in_apl_t *apl = target;
+ isc_region_t r;
+
+ REQUIRE(rdata->type == 42);
+ REQUIRE(rdata->rdclass == 1);
+
+ apl->common.rdclass = rdata->rdclass;
+ apl->common.rdtype = rdata->type;
+ ISC_LINK_INIT(&apl->common, link);
+
+ dns_rdata_toregion(rdata, &r);
+ apl->apl_len = r.length;
+ apl->apl = mem_maybedup(mctx, r.base, r.length);
+ if (apl->apl == NULL)
+ return (ISC_R_NOMEMORY);
+
+ apl->offset = 0;
+ apl->mctx = mctx;
+ return (ISC_R_SUCCESS);
+}
+
+static inline void
+freestruct_in_apl(ARGS_FREESTRUCT) {
+ dns_rdata_in_apl_t *apl = source;
+
+ REQUIRE(source != NULL);
+ REQUIRE(apl->common.rdtype == 42);
+ REQUIRE(apl->common.rdclass == 1);
+
+ if (apl->mctx == NULL)
+ return;
+ if (apl->apl != NULL)
+ isc_mem_free(apl->mctx, apl->apl);
+ apl->mctx = NULL;
+}
+
+isc_result_t
+dns_rdata_apl_first(dns_rdata_in_apl_t *apl) {
+ REQUIRE(apl->common.rdtype == 42);
+ REQUIRE(apl->common.rdclass == 1);
+ REQUIRE(apl->apl != NULL || apl->apl_len == 0);
+
+ apl->offset = 0;
+ return ((apl->apl_len != 0) ? ISC_R_SUCCESS : ISC_R_NOMORE);
+}
+
+isc_result_t
+dns_rdata_apl_next(dns_rdata_in_apl_t *apl) {
+ REQUIRE(apl->common.rdtype == 42);
+ REQUIRE(apl->common.rdclass == 1);
+ REQUIRE(apl->apl != NULL || apl->apl_len == 0);
+
+ if (apl->offset + 3 < apl->apl_len)
+ return (ISC_R_NOMORE);
+ apl->offset += apl->apl[apl->offset + 3] & 0x7f;
+ return ((apl->offset >= apl->apl_len) ? ISC_R_SUCCESS : ISC_R_NOMORE);
+}
+
+isc_result_t
+dns_rdata_apl_current(dns_rdata_in_apl_t *apl, dns_rdata_apl_ent_t *ent) {
+
+ REQUIRE(apl->common.rdtype == 42);
+ REQUIRE(apl->common.rdclass == 1);
+ REQUIRE(ent != NULL);
+ REQUIRE(apl->apl != NULL || apl->apl_len == 0);
+
+ if (apl->offset >= apl->apl_len)
+ return (ISC_R_NOMORE);
+
+ ent->family = (apl->apl[apl->offset] << 8) + apl->apl[apl->offset + 1];
+ ent->prefix = apl->apl[apl->offset + 2];
+ ent->length = apl->apl[apl->offset + 3] & 0x7f;
+ ent->negative = ISC_TF((apl->apl[apl->offset + 3] & 0x80) != 0);
+ if (ent->length != 0)
+ ent->data = &apl->apl[apl->offset + 4];
+ else
+ ent->data = NULL;
+ return (ISC_R_SUCCESS);
+}
+
+static inline isc_result_t
+additionaldata_in_apl(ARGS_ADDLDATA) {
+ REQUIRE(rdata->type == 42);
+ REQUIRE(rdata->rdclass == 1);
+
+ (void)add;
+ (void)arg;
+
+ return (ISC_R_SUCCESS);
+}
+
+static inline isc_result_t
+digest_in_apl(ARGS_DIGEST) {
+ isc_region_t r;
+
+ REQUIRE(rdata->type == 42);
+ REQUIRE(rdata->rdclass == 1);
+
+ dns_rdata_toregion(rdata, &r);
+
+ return ((digest)(arg, &r));
+}
+
+#endif /* RDATA_IN_1_ALP_42_C */
projects / thirdparty / bind9.git / commitdiff
