From 64bc6412188b141c010ac3b8e813b837dd991e80 Mon Sep 17 00:00:00 2001 From: Erik Andersen Date: Sun, 14 May 2000 04:16:35 +0000 Subject: Initial revision --- include/resolv.h | 85 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 85 insertions(+) create mode 100644 include/resolv.h (limited to 'include/resolv.h') diff --git a/include/resolv.h b/include/resolv.h new file mode 100644 index 000000000..53ee2f235 --- /dev/null +++ b/include/resolv.h @@ -0,0 +1,85 @@ +/* resolv.h: DNS Resolver + * + * Copyright (C) 1998 Kenneth Albanowski , + * The Silver Hammer Group, Ltd. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + */ + +#ifndef _RESOLV_H_ +#define _RESOLV_H_ + +#include +#include + +struct resolv_header { + int id; + int qr,opcode,aa,tc,rd,ra,rcode; + int qdcount; + int ancount; + int nscount; + int arcount; +}; + +struct resolv_question { + char * dotted; + int qtype; + int qclass; +}; + +struct resolv_answer { + char * dotted; + int atype; + int aclass; + int ttl; + int rdlength; + unsigned char * rdata; + int rdoffset; +}; + +int encode_header(struct resolv_header * h, unsigned char * dest, int maxlen); +int decode_header(unsigned char * data, struct resolv_header * h); +int encode_dotted(const char * dotted, unsigned char * dest, int maxlen); +int decode_dotted(const unsigned char * message, int offset, + char * dest, int maxlen); +int length_dotted(const unsigned char * message, int offset); +int encode_question(struct resolv_question * q, + unsigned char * dest, int maxlen); +int decode_question(unsigned char * message, int offset, + struct resolv_question * q); +int length_question(unsigned char * message, int offset); +int encode_answer(struct resolv_answer * a, + unsigned char * dest, int maxlen); +int decode_answer(unsigned char * message, int offset, + struct resolv_answer * a); +char * resolve_name(const char * name, int mailbox); + +int encode_packet(struct resolv_header * h, + struct resolv_question ** q, + struct resolv_question ** an, + struct resolv_question ** ns, + struct resolv_question ** ar, + unsigned char * dest, int maxlen); +int decode_packet(unsigned char * data, struct resolv_header * h); + +int dns_lookup(const char * name, int type, int nscount, const char ** nsip, + unsigned char ** outpacket, struct resolv_answer * a); + +int resolve_address(const char * address, + int nscount, const char ** nsip, + struct in_addr * in); + +int resolve_mailbox(const char * address, + int nscount, const char ** nsip, + struct in_addr * in); + +extern int open_nameservers(void); +extern void close_nameservers(void); + +extern struct hostent * gethostbyname(const char * name); +extern struct hostent * gethostbyaddr(const char * addr, int len, int type); + +#endif /*_RESOLV_H_*/ -- cgit v1.2.3