107 lines
2.9 KiB
C
107 lines
2.9 KiB
C
/*
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* Copyright (C) 2009-2010 Mamadou Diop.
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*
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* Contact: Mamadou Diop <diopmamadou(at)doubango.org>
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*
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* This file is part of Open Source Doubango Framework.
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*
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* DOUBANGO is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* DOUBANGO is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with DOUBANGO.
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*
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*/
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/**@file tnet_dns_a.c
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* @brief DNS Address record - RR - (RFC 1035).
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*
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* @author Mamadou Diop <diopmamadou(at)doubango.org>
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*
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* @date Created: Sat Nov 8 16:54:58 2009 mdiop
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*/
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#include "tnet_dns_a.h"
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#include "../tnet_types.h"
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#include "../tnet_endianness.h"
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#include "tsk_string.h"
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#include "tsk_memory.h"
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#include "tsk_debug.h"
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/** Creates new DNS A Resource Record.
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*/
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tnet_dns_a_t* tnet_dns_a_create(const char* name, tnet_dns_qclass_t qclass, uint32_t ttl, uint16_t rdlength, const void* data, tsk_size_t offset)
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{
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return tsk_object_new(tnet_dns_a_def_t, name, qclass, ttl, rdlength, data, offset);
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}
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//=================================================================================================
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// [[DNS A]] object definition
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//
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static tsk_object_t* tnet_dns_a_ctor(tsk_object_t * self, va_list * app)
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{
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tnet_dns_a_t *a = self;
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if(a){
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const char* name = va_arg(*app, const char*);
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tnet_dns_qclass_t qclass = va_arg(*app, tnet_dns_qclass_t);
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uint32_t ttl = va_arg(*app, uint32_t);
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#if defined(__GNUC__)
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uint16_t rdlength = (uint16_t)va_arg(*app, unsigned);
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#else
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uint16_t rdlength = va_arg(*app, uint16_t);
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#endif
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const void* data = va_arg(*app, const void*);
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tsk_size_t offset = va_arg(*app, tsk_size_t);
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const uint8_t* rddata = (((uint8_t*)data) + offset);
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//const uint8_t* dataEnd = (rddata + rdlength);
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/* init base */
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tnet_dns_rr_init(TNET_DNS_RR(a), qtype_a, qclass);
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TNET_DNS_RR(a)->name = tsk_strdup(name);
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TNET_DNS_RR(a)->rdlength = rdlength;
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TNET_DNS_RR(a)->ttl = ttl;
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if(rddata && rdlength && (rdlength == 4/* 32bits */)){
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// ==> DESERIALIZATION
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/* ADDRESS */
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uint32_t address = tnet_htonl_2(rddata);
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tsk_sprintf(&(a->address), "%u.%u.%u.%u", (address>>24)&0xFF, (address>>16)&0xFF, (address>>8)&0xFF, (address>>0)&0xFF);
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}
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else{
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TSK_DEBUG_ERROR("Invalid IPv4 address.");
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}
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}
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return self;
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}
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static tsk_object_t* tnet_dns_a_dtor(tsk_object_t * self)
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{
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tnet_dns_a_t *a = self;
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if(a){
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/* deinit base */
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tnet_dns_rr_deinit(TNET_DNS_RR(a));
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TSK_FREE(a->address);
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}
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return self;
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}
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static const tsk_object_def_t tnet_dns_a_def_s =
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{
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sizeof(tnet_dns_a_t),
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tnet_dns_a_ctor,
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tnet_dns_a_dtor,
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tsk_null,
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};
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const tsk_object_def_t *tnet_dns_a_def_t = &tnet_dns_a_def_s;
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