| 1 | /* |
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| 2 | * Copyright (c) 2006-2009 Bjorn Andersson <flex@kryo.se>, Erik Ekman <yarrick@kryo.se> |
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| 3 | * |
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| 4 | * Permission to use, copy, modify, and distribute this software for any |
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| 5 | * purpose with or without fee is hereby granted, provided that the above |
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| 6 | * copyright notice and this permission notice appear in all copies. |
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| 7 | * |
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| 8 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
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| 9 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
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| 10 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
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| 11 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
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| 12 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
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| 13 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
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| 14 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
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| 15 | */ |
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| 16 | |
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| 17 | #ifndef __DNS_H__ |
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| 18 | #define __DNS_H__ |
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| 19 | |
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| 20 | #include "common.h" |
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| 21 | |
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| 22 | typedef enum { |
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| 23 | QR_QUERY = 0, |
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| 24 | QR_ANSWER = 1 |
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| 25 | } qr_t; |
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| 26 | |
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| 27 | extern int dnsc_use_edns0; |
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| 28 | |
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| 29 | int dns_encode(char *, size_t, struct query *, qr_t, char *, size_t); |
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| 30 | int dns_encode_ns_response(char *buf, size_t buflen, struct query *q, char *topdomain); |
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| 31 | int dns_encode_a_response(char *buf, size_t buflen, struct query *q); |
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| 32 | unsigned short dns_get_id(char *packet, size_t packetlen); |
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| 33 | int dns_decode(char *, size_t, struct query *, qr_t, char *, size_t); |
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| 34 | |
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| 35 | #endif /* _DNS_H_ */ |
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