ARES_EXPAND_NAME(3)    FreeBSD Library Functions Manual    ARES_EXPAND_NAME(3)

NAME
       ares_expand_name - Expand a DNS-encoded domain name

SYNOPSIS
       #include <ares.h>

       int ares_expand_name(const unsigned char *encoded,
       const unsigned char *abuf, int alen, char **s,
            long *enclen)

DESCRIPTION
       The ares_expand_name function converts a DNS-encoded domain name to a
       dot-separated C string.  The argument encoded gives the beginning of
       the encoded domain name, and the arguments abuf and 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 s.  The length of the encoded name is stored in
       the variable pointed to by enclen so that the caller can advance past
       the encoded domain name to read further data in the message.

       Use _free_string&section=3">ares_free_string(3) to free the allocated hostname.

RETURN VALUES
       ares_expand_name can return any of the following values:

       ARES_SUCCESS   Expansion of the encoded name succeeded.

       ARES_EBADNAME  The encoded domain name was malformed and could not be
                      expanded.

       ARES_ENOMEM    Memory was exhausted.

SEE ALSO
       ares_mkquery(3)ares_free_string&section=3">,ares_free_string(3)

AUTHOR
       Greg Hudson, MIT Information Systems
       Copyright 1998 by the Massachusetts Institute of Technology.

                                  20 Nov 2009              ARES_EXPAND_NAME(3)