iodine/src/dns.h

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/*
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* Copyright (c) 2006-2009 Bjorn Andersson <flex@kryo.se>, Erik Ekman <yarrick@kryo.se>
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*
* 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 THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR 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.
*/
#ifndef __DNS_H__
#define __DNS_H__
#include "common.h"
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typedef enum {
QR_QUERY = 0,
QR_ANSWER = 1
} qr_t;
int dns_encode(char *, size_t, struct query *, qr_t, char *, size_t);
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int dns_encode_ns_response(char *buf, size_t buflen, struct query *q, char *topdomain);
unsigned short dns_get_id(char *packet, size_t packetlen);
int dns_decode(char *, size_t, struct query *, qr_t, char *, size_t);
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#endif /* _DNS_H_ */