66 строки
2.1 KiB
Groff
66 строки
2.1 KiB
Groff
.\" $Id$
|
|
.\"
|
|
.\" Copyright 1998 by the Massachusetts Institute of Technology.
|
|
.\"
|
|
.\" Permission to use, copy, modify, and distribute this
|
|
.\" software and its documentation for any purpose and without
|
|
.\" fee is hereby granted, provided that the above copyright
|
|
.\" notice appear in all copies and that both that copyright
|
|
.\" notice and this permission notice appear in supporting
|
|
.\" documentation, and that the name of M.I.T. not be used in
|
|
.\" advertising or publicity pertaining to distribution of the
|
|
.\" software without specific, written prior permission.
|
|
.\" M.I.T. makes no representations about the suitability of
|
|
.\" this software for any purpose. It is provided "as is"
|
|
.\" without express or implied warranty.
|
|
.\"
|
|
.TH ARES_EXPAND_NAME 3 "23 July 1998"
|
|
.SH NAME
|
|
ares_expand_name \- Expand a DNS-encoded domain name
|
|
.SH SYNOPSIS
|
|
.nf
|
|
.B #include <ares.h>
|
|
.PP
|
|
.B int ares_expand_name(const unsigned char *\fIencoded\fP,
|
|
.B
|
|
const unsigned char *\fIabuf\fP, int \fIalen\fP, char **\fIs\fP,
|
|
.B int *\fIenclen\fP)
|
|
.fi
|
|
.SH DESCRIPTION
|
|
The
|
|
.B ares_expand_name
|
|
function converts a DNS-encoded domain name to a dot-separated C
|
|
string. The argument
|
|
.I encoded
|
|
gives the beginning of the encoded domain name, and the arguments
|
|
.I abuf
|
|
and
|
|
.I alen
|
|
give the containing message buffer (necessary for the processing of
|
|
indirection pointers within the encoded domain name). The result is
|
|
placed in a NUL-terminated allocated buffer, a pointer to which is
|
|
stored in the variable pointed to by
|
|
.IR s .
|
|
The length of the encoded name is stored in the variable pointed to by
|
|
.I enclen
|
|
so that the caller can advance past the encoded domain name to read
|
|
further data in the message.
|
|
.SH RETURN VALUES
|
|
.B ares_expand_name
|
|
can return any of the following values:
|
|
.TP 15
|
|
.B ARES_SUCCESS
|
|
Expansion of the encoded name succeeded.
|
|
.TP 15
|
|
.B ARES_EBADNAME
|
|
The encoded domain name was malformed and could not be expanded.
|
|
.TP 15
|
|
.B ARES_ENOMEM
|
|
Memory was exhausted.
|
|
.SH SEE ALSO
|
|
.BR ares_mkquery (3)
|
|
.SH AUTHOR
|
|
Greg Hudson, MIT Information Systems
|
|
.br
|
|
Copyright 1998 by the Massachusetts Institute of Technology.
|