ares_expand_string(3)

ARES_EXPAND_NAME(3)    C LIBRARY FUNCTIONS    ARES_EXPAND_NAME(3)

NAME

     ares_expand_string - Expand a length encoded string

SYNOPSIS

     #include <ares.h>

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

DESCRIPTION

     The ares_expand_string function converts  a  length  encoded
     string  to  a NUL-terminated C string.  The argument encoded
     gives the beginning of the encoded string, 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
     string is stored in the variable pointed  to  by  enclen  so
     that  the caller can advance past the encoded string to read
     further data in the message.

RETURN VALUES

     ares_expand_string can return any of the following values:

     ARES_SUCCESS   Expansion of the encoded string succeeded.

     ARES_EBADSTR   The encoded string was  malformed  and  could
                    not be expanded.

     ARES_ENOMEM    Memory was exhausted.

SEE ALSO

     ares_free_string(3)

AUTHOR

     Dominick Meglio

                    Last change: 20 Nov 2009                    1