144 lines
2.8 KiB
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144 lines
2.8 KiB
HTML
Content-type: text/html
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<HTML><HEAD><TITLE>Manpage of IPSEC_PORTOF</TITLE>
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</HEAD><BODY>
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<H1>IPSEC_PORTOF</H1>
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Section: C Library Functions (3)<BR>Updated: 8 Sept 2000<BR><A HREF="#index">Index</A>
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<A HREF="http://localhost/cgi-bin/man/man2html">Return to Main Contents</A><HR>
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<A NAME="lbAB"> </A>
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<H2>NAME</H2>
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ipsec portof - get port field of an ip_address
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<BR>
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ipsec setportof - set port field of an ip_address
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<BR>
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ipsec sockaddrof - get pointer to internal sockaddr of an ip_address
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<BR>
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ipsec sockaddrlenof - get length of internal sockaddr of an ip_address
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<A NAME="lbAC"> </A>
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<H2>SYNOPSIS</H2>
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<B>#include <<A HREF="file:/usr/include/freeswan.h">freeswan.h</A>></B>
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<P>
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<B>int portof(const ip_address *src);</B>
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<BR>
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<B>void setportof(int port, ip_address *dst);</B>
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<BR>
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<B>struct sockaddr *sockaddrof(ip_address *src);</B>
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<BR>
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<B>size_t sockaddrlenof(const ip_address *src);</B>
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<A NAME="lbAD"> </A>
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<H2>DESCRIPTION</H2>
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The
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<B><<A HREF="file:/usr/include/freeswan.h">freeswan.h</A>></B>
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internal type
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<I>ip_address</I>
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contains one of the
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<I>sockaddr</I>
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types internally.
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<I>Reliance on this feature is discouraged</I>,
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but it may occasionally be necessary.
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These functions provide low-level tools for this purpose.
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<P>
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<I>Portof</I>
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and
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<I>setportof</I>
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respectively read and write the port-number field of the internal
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<I>sockaddr</I>.
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The values are in network byte order.
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<P>
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<I>Sockaddrof</I>
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returns a pointer to the internal
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<I>sockaddr</I>,
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for passing to other functions.
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<P>
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<I>Sockaddrlenof</I>
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reports the size of the internal
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<I>sockaddr</I>,
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for use in storage allocation.
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<A NAME="lbAE"> </A>
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<H2>SEE ALSO</H2>
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<A HREF="inet.3.html">inet</A>(3), <A HREF="ipsec_initaddr.3.html">ipsec_initaddr</A>(3)
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<A NAME="lbAF"> </A>
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<H2>DIAGNOSTICS</H2>
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<I>Portof</I>
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returns
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<B>-1</B>,
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<I>sockaddrof</I>
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returns
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<B>NULL</B>,
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and
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<I>sockaddrlenof</I>
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returns
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<B>0</B>
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if an unknown address family is found within the
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<I>ip_address</I>.
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<A NAME="lbAG"> </A>
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<H2>HISTORY</H2>
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Written for the FreeS/WAN project by Henry Spencer.
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<A NAME="lbAH"> </A>
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<H2>BUGS</H2>
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These functions all depend on low-level details of the
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<I>ip_address</I>
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type, which are in principle subject to change.
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Avoid using them unless really necessary.
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<P>
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<HR>
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<A NAME="index"> </A><H2>Index</H2>
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<DL>
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<DT><A HREF="#lbAB">NAME</A><DD>
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<DT><A HREF="#lbAC">SYNOPSIS</A><DD>
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<DT><A HREF="#lbAD">DESCRIPTION</A><DD>
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<DT><A HREF="#lbAE">SEE ALSO</A><DD>
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<DT><A HREF="#lbAF">DIAGNOSTICS</A><DD>
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<DT><A HREF="#lbAG">HISTORY</A><DD>
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<DT><A HREF="#lbAH">BUGS</A><DD>
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</DL>
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<HR>
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This document was created by
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<A HREF="http://localhost/cgi-bin/man/man2html">man2html</A>,
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using the manual pages.<BR>
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Time: 21:40:18 GMT, November 11, 2003
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