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/*
* Copyright (c) 2018-2021, OARC, Inc.
* All rights reserved.
*
* This file is part of dnsjit.
*
* dnsjit is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* dnsjit is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with dnsjit. If not, see <http://www.gnu.org/licenses/>.
*/
//lua:require("dnsjit.core.log")
//lua:require("dnsjit.core.object_h")
typedef struct core_object_dns_label {
uint8_t is_end;
uint8_t have_length;
uint8_t have_offset;
uint8_t have_extension_bits;
uint8_t have_dn;
uint8_t extension_bits;
uint8_t length;
uint16_t offset;
} core_object_dns_label_t;
typedef struct core_object_dns_rr {
uint8_t have_type;
uint8_t have_class;
uint8_t have_ttl;
uint8_t have_rdlength;
uint8_t have_rdata;
uint8_t have_rdata_labels;
uint8_t have_padding;
uint16_t type;
uint16_t class;
uint32_t ttl;
uint16_t rdlength;
size_t labels;
size_t rdata_offset;
size_t rdata_labels;
size_t padding_offset;
size_t padding_length;
} core_object_dns_rr_t;
typedef struct core_object_dns_q {
uint8_t have_type;
uint8_t have_class;
uint16_t type;
uint16_t class;
size_t labels;
} core_object_dns_q_t;
typedef struct core_object_dns {
const core_object_t* obj_prev;
int32_t obj_type;
int includes_dnslen;
const uint8_t *payload, *at;
size_t len, left;
uint8_t have_dnslen;
uint8_t have_id;
uint8_t have_qr;
uint8_t have_opcode;
uint8_t have_aa;
uint8_t have_tc;
uint8_t have_rd;
uint8_t have_ra;
uint8_t have_z;
uint8_t have_ad;
uint8_t have_cd;
uint8_t have_rcode;
uint8_t have_qdcount;
uint8_t have_ancount;
uint8_t have_nscount;
uint8_t have_arcount;
uint16_t dnslen;
uint16_t id;
int8_t qr;
uint8_t opcode;
uint8_t aa;
uint8_t tc;
uint8_t rd;
uint8_t ra;
uint8_t z;
uint8_t ad;
uint8_t cd;
uint8_t rcode;
uint16_t qdcount;
uint16_t ancount;
uint16_t nscount;
uint16_t arcount;
} core_object_dns_t;
core_log_t* core_object_dns_log();
core_object_dns_t* core_object_dns_new();
core_object_dns_t* core_object_dns_copy(const core_object_dns_t* self);
void core_object_dns_free(core_object_dns_t* self);
void core_object_dns_reset(core_object_dns_t* self, const core_object_t* obj);
int core_object_dns_parse_header(core_object_dns_t* self);
int core_object_dns_parse_q(core_object_dns_t* self, core_object_dns_q_t* q, core_object_dns_label_t* label, size_t labels);
int core_object_dns_parse_rr(core_object_dns_t* self, core_object_dns_rr_t* rr, core_object_dns_label_t* label, size_t labels);
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