NAME    [Toc]    [Back]

     ipx_addr, ipx_ntoa - IPX address conversion routines

SYNOPSIS    [Toc]    [Back]

     #include <sys/types.h>
     #include <netipx/ipx.h>

     struct ipx_addr
     ipx_addr(const char *cp);

     char *
     ipx_ntoa(struct ipx_addr ipx);

DESCRIPTION    [Toc]    [Back]

     The routine ipx_addr() interprets character  strings  representing IPX addresses,
  returning  binary  information suitable for use in
system calls.
     The routine ipx_ntoa() takes IPX addresses and returns ASCII
strings representing
 the address in a notation in common use:

           <network number>.<host number>.<port number>

     Trailing  zero  fields  are  suppressed,  and each number is
printed in hexadecimal,
 in a format suitable for input to ipx_addr().  Any
fields lacking
  super-decimal digits will have a trailing `H' appended.

     An effort has been made to ensure that ipx_addr() be compatible with most
     formats  in  common  use.  It will first separate an address
into 1 to 3
     fields using a single delimiter chosen  from  period  (`.'),
colon (`:'), or
     pound-sign (`#').  Each field is then examined for byte separators (colon
     or period).  If there are  byte  separators,  each  subfield
separated is
     taken  to be a small hexadecimal number, and the entirety is
taken as a
     network-byte-ordered quantity to be  zero  extended  in  the
high-network-order
  bytes.   Next,  the  field is inspected for hyphens, in
which case the
     field is assumed to be a number in decimal notation with hyphens separating
  the  millenia.  Next, the field is assumed to be a number: It is interpreted
 as hexadecimal if there is a leading `0x'  (as  in
C), a trailing
     `H' (as in Mesa), or there are any super-decimal digits present.  It is
     interpreted as octal if there is a leading `0' and there are
no super-octal
 digits.  Otherwise, it is converted as a decimal number.

RETURN VALUES    [Toc]    [Back]

     None.  (See BUGS.)

SEE ALSO    [Toc]    [Back]

     ns(4), hosts(5), networks(5)

HISTORY    [Toc]    [Back]

     The precursor ns_addr() and ns_ntoa() functions appeared  in
4.3BSD.

BUGS    [Toc]    [Back]

     The string returned by ipx_ntoa() resides in a static memory
area.  The
     function ipx_addr() should diagnose improperly formed input,
and there
     should be an unambiguous way to recognize this.

OpenBSD      3.6                           June      4,      1993