146 lines
3.9 KiB
C
146 lines
3.9 KiB
C
/*
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* Copyright (C) 2009 Mamadou Diop.
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*
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* Contact: Mamadou Diop <diopmamadou@yahoo.fr>
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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_naptr.c
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* @brief DNS Naming Authority Pointer - RR - (RFC 3403).
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*
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* @author Mamadou Diop <diopmamadou(at)yahoo.fr>
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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_naptr.h"
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#include "../tnet_types.h"
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#include "tsk_memory.h"
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#include "tsk_string.h"
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//=================================================================================================
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// [[DNS NAPTR]] object definition
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//
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static void* tnet_dns_naptr_create(void * self, va_list * app)
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{
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tnet_dns_naptr_t *naptr = self;
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if(naptr)
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{
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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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size_t offset = va_arg(*app, 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(naptr), qtype_naptr, qclass);
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TNET_DNS_RR(naptr)->name = tsk_strdup(name);
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TNET_DNS_RR(naptr)->rdlength = rdlength;
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TNET_DNS_RR(naptr)->ttl = ttl;
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if(rddata && rdlength)
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{ // ==> DESERIALIZATION
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/* ORDER */
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naptr->order = ntohs(*((uint16_t*)rddata));
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rddata += 2, offset += 2;
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/* PREFERENCE */
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naptr->preference = ntohs(*((uint16_t*)rddata));
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rddata += 2, offset += 2;
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/* FLAGS */
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tnet_dns_rr_charstring_deserialize(data, (dataEnd - rddata), &(naptr->flags), &offset);
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rddata += offset;
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/* SERVICES */
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tnet_dns_rr_charstring_deserialize(data, (dataEnd - rddata), &(naptr->services), &offset);
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rddata += offset;
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/* REGEXP */
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tnet_dns_rr_charstring_deserialize(data, (dataEnd - rddata), &(naptr->regexp), &offset);
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rddata += offset;
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/* REPLACEMENT */
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tnet_dns_rr_qname_deserialize(data, (dataEnd - rddata), &(naptr->replacement), &offset);
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}
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}
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return self;
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}
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static void* tnet_dns_naptr_destroy(void * self)
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{
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tnet_dns_naptr_t *naptr = self;
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if(naptr)
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{
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/* deinit base */
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tnet_dns_rr_deinit(TNET_DNS_RR(naptr));
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TSK_FREE(naptr->flags);
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TSK_FREE(naptr->services);
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TSK_FREE(naptr->regexp);
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TSK_FREE(naptr->replacement);
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}
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return self;
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}
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static int tnet_dns_naptr_cmp(const void *obj1, const void *obj2)
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{
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const tnet_dns_rr_t* rr1 = obj1;
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const tnet_dns_rr_t* rr2 = obj2;
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if(rr1 && rr2 && (rr1->qtype==qtype_naptr) && (rr2->qtype==qtype_naptr))
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{
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const tnet_dns_naptr_t* naptr1 = (tnet_dns_naptr_t*)rr1;
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const tnet_dns_naptr_t* naptr2 = (tnet_dns_naptr_t*)rr2;
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/* Compare orders. */
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if(naptr1->order < naptr2->order){ /* Lowest order is tried first. */
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return 1;
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}
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else if(naptr1->order > naptr2->order){
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return -1;
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}
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/* Compare preference */
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if(naptr1->order < naptr2->order){ /* Lowest preference is tried first. */
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return 1;
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}
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else if(naptr1->order > naptr2->order){
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return -1;
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}
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return 0;
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}
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else return -1;
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}
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static const tsk_object_def_t tnet_dns_naptr_def_s =
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{
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sizeof(tnet_dns_naptr_t),
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tnet_dns_naptr_create,
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tnet_dns_naptr_destroy,
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tnet_dns_naptr_cmp,
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};
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const void *tnet_dns_naptr_def_t = &tnet_dns_naptr_def_s;
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