2003-10-07 17:54:04 -04:00
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.\" $Id$
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.\"
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.\" Copyright 1998 by the Massachusetts Institute of Technology.
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.\"
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.\" Permission to use, copy, modify, and distribute this
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.\" software and its documentation for any purpose and without
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.\" fee is hereby granted, provided that the above copyright
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.\" notice appear in all copies and that both that copyright
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.\" notice and this permission notice appear in supporting
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.\" documentation, and that the name of M.I.T. not be used in
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.\" advertising or publicity pertaining to distribution of the
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.\" software without specific, written prior permission.
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.\" M.I.T. makes no representations about the suitability of
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.\" this software for any purpose. It is provided "as is"
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.\" without express or implied warranty.
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.\"
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.TH ARES_PARSE_A_REPLY 3 "25 July 1998"
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.SH NAME
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2009-10-29 05:06:42 -04:00
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ares_parse_a_reply \- Parse a reply to a DNS query of type A
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.SH SYNOPSIS
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.nf
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.B #include <ares.h>
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.PP
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2004-04-01 01:10:56 -05:00
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.B int ares_parse_a_reply(const unsigned char *\fIabuf\fP, int \fIalen\fP,
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2007-11-15 03:36:25 -05:00
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.B struct hostent **\fIhost\fP,
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.B struct addrttl *\fIaddrttls\fB, int *\fInaddrttls\fB);
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2003-10-07 17:54:04 -04:00
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.fi
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.SH DESCRIPTION
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The
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.B ares_parse_a_reply
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function parses the response to a query of type A into a
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.BR "struct hostent"
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and/or an array of
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.BR "struct addrttls" .
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The parameters
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.I abuf
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and
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.I alen
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give the contents of the response. The result is stored in allocated
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memory and a pointer to it stored into the variable pointed to by
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2007-11-15 03:36:25 -05:00
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.IR host ,
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if host is nonnull.
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It is the caller's responsibility to free the resulting host structure
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using
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.BR ares_free_hostent (3)
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when it is no longer needed.
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2007-11-15 03:36:25 -05:00
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.PP
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If
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.IR addrttls
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and
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.IR naddrttls
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are both nonnull,
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then up to *naddrttls
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.BR "struct addrttl"
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records are stored in the array pointed to by addrttls,
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and then *naddrttls is set to the number of records so stored.
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Note that the memory for these records is supplied by the caller.
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2003-10-07 17:54:04 -04:00
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.SH RETURN VALUES
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.B ares_parse_a_reply
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can return any of the following values:
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.TP 15
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.B ARES_SUCCESS
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The response was successfully parsed.
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.TP 15
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.B ARES_EBADRESP
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The response was malformatted.
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.TP 15
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.B ARES_ENODATA
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The response did not contain an answer to the query.
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.TP 15
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.B ARES_ENOMEM
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Memory was exhausted.
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.SH SEE ALSO
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.BR ares_gethostbyname (3),
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.BR ares_free_hostent (3)
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.SH AUTHOR
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Greg Hudson, MIT Information Systems
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.br
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Copyright 1998 by the Massachusetts Institute of Technology.
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