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Content-type: text/html
<HTML><HEAD><TITLE>Manpage of IPSEC_ANYADDR</TITLE>
</HEAD><BODY>
<H1>IPSEC_ANYADDR</H1>
Section: C Library Functions (3)<BR>Updated: 8 Sept 2000<BR><A HREF="#index">Index</A>
<A HREF="http://localhost/cgi-bin/man/man2html">Return to Main Contents</A><HR>
<A NAME="lbAB"> </A>
<H2>NAME</H2>
ipsec anyaddr - get "any" address
<BR>
ipsec isanyaddr - test address for equality to "any" address
<BR>
ipsec unspecaddr - get "unspecified" address
<BR>
ipsec isunspecaddr - test address for equality to "unspecified" address
<BR>
ipsec loopbackaddr - get loopback address
<BR>
ipsec isloopbackaddr - test address for equality to loopback address
<A NAME="lbAC"> </A>
<H2>SYNOPSIS</H2>
<B>#include <<A HREF="file:/usr/include/freeswan.h">freeswan.h</A>></B>
<P>
<B>const char *anyaddr(int af, ip_address *dst);</B>
<BR>
<B>int isanyaddr(const ip_address *src);</B>
<BR>
<B>const char *unspecaddr(int af, ip_address *dst);</B>
<BR>
<B>int isunspecaddr(const ip_address *src);</B>
<BR>
<B>const char *loopbackaddr(int af, ip_address *dst);</B>
<BR>
<B>int isloopbackaddr(const ip_address *src);</B>
<A NAME="lbAD"> </A>
<H2>DESCRIPTION</H2>
These functions fill in, and test for, special values of the
<I>ip_address</I>
type.
<P>
<I>Anyaddr</I>
fills in the destination
<I>*dst</I>
with the ``any'' address of address family
<I>af</I>
(normally
<B>AF_INET</B>
or
<B>AF_INET6</B>).
The IPv4 ``any'' address is the one embodied in the old
<B>INADDR_ANY</B>
macro.
<P>
<I>Isanyaddr</I>
returns
<B>1</B>
if the
<I>src</I>
address equals the ``any'' address,
and
<B>0</B>
otherwise.
<P>
Similarly,
<I>unspecaddr</I>
supplies, and
<I>isunspecaddr</I>
tests for,
the ``unspecified'' address,
which may be the same as the ``any'' address.
<P>
Similarly,
<I>loopbackaddr</I>
supplies, and
<I>islookbackaddr</I>
tests for,
the loopback address.
<P>
<I>Anyaddr</I>,
<I>unspecaddr</I>,
and
<I>loopbackaddr</I>
return
<B>NULL</B>
for success and
a pointer to a string-literal error message for failure;
see DIAGNOSTICS.
<A NAME="lbAE"> </A>
<H2>SEE ALSO</H2>
<A HREF="inet.3.html">inet</A>(3), <A HREF="ipsec_addrtot.3.html">ipsec_addrtot</A>(3), <A HREF="ipsec_sameaddr.3.html">ipsec_sameaddr</A>(3)
<A NAME="lbAF"> </A>
<H2>DIAGNOSTICS</H2>
Fatal errors in the address-supplying functions are:
unknown address family.
<A NAME="lbAG"> </A>
<H2>HISTORY</H2>
Written for the FreeS/WAN project by Henry Spencer.
<P>
<HR>
<A NAME="index"> </A><H2>Index</H2>
<DL>
<DT><A HREF="#lbAB">NAME</A><DD>
<DT><A HREF="#lbAC">SYNOPSIS</A><DD>
<DT><A HREF="#lbAD">DESCRIPTION</A><DD>
<DT><A HREF="#lbAE">SEE ALSO</A><DD>
<DT><A HREF="#lbAF">DIAGNOSTICS</A><DD>
<DT><A HREF="#lbAG">HISTORY</A><DD>
</DL>
<HR>
This document was created by
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Time: 21:40:17 GMT, November 11, 2003
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