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<html>
<head><title>smfi_setconn</title></head>
<body>
<!--
$Id: smfi_setconn.html,v 1.14 2003/05/26 05:09:16 gshapiro Exp $
-->
<h1>smfi_setconn</h1>
<table border="0" cellspacing=4 cellpadding=4>
<!---------- Synopsis ----------->
<tr><th valign="top" align=left width=150>SYNOPSIS</th><td>
<pre>
#include <libmilter/mfapi.h>
int smfi_setconn(
char *oconn;
);
</pre>
Set the socket through which this filter should communicate with sendmail.
</td></tr>
<!----------- Description ---------->
<tr><th valign="top" align=left>DESCRIPTION</th><td>
<table border="1" cellspacing=1 cellpadding=4>
<tr align="left" valign=top>
<th width="80">Called When</th>
<td>smfi_setconn must be called once before <a href="smfi_main.html">smfi_main</a>.</td>
</tr>
<tr align="left" valign=top>
<th width="80">Effects</th>
<td>Sets the socket through which the filter communicates with sendmail.</td>
</tr>
</table>
<!----------- Arguments ---------->
<tr><th valign="top" align=left>ARGUMENTS</th><td>
<table border="1" cellspacing=0>
<tr bgcolor="#dddddd"><th>Argument</th><th>Description</th></tr>
<tr valign="top"><td>oconn</td>
<td>The address of the desired communication socket.
The address should be a NULL-terminated string in "proto:address"
format:
<ul>
<li><code>{unix|local}:/path/to/file</code> -- A named pipe.
<li><code>inet:port@{hostname|ip-address}</code> -- An IPV4 socket.
<li><code>inet6:port@{hostname|ip-address}</code> -- An IPV6 socket.
</ul>
</td></tr>
</table>
</td></tr>
<!----------- Return values ---------->
<tr>
<th valign="top" align=left>RETURN VALUES</th>
<td>smfi_setconn will not fail on an invalid address.
The failure will only be detected in <a href="smfi_main.html">smfi_main</a></td>.
Nevertheless, smfi_setconn may fail for other reasons, e.g.,
due to a lack of memory.
</tr>
<tr>
<th valign="top" align=left>NOTES</th>
<td>
<ul>
<li>If possible, filters should not run as root when communicating
over unix/local domain sockets.
<li>Unix/local sockets should have their permissions set to
0600 (read/write permission only for the socket's owner) or
0660 (read/write permission for the socket's owner and group)
which is useful if the sendmail RunAsUser option is used.
The permissions for a unix/local domain socket are determined as
usual by <code>umask</code>, which should be set to 007 or 077.
Note some operating systems (e.g, Solaris) don't use the
permissions of the socket. On those systems, place the socket in a
protected directory.
</ul>
</td>
</tr>
</table>
<hr size="1">
<font size="-1">
Copyright (c) 2000, 2003 Sendmail, Inc. and its suppliers.
All rights reserved.
<br>
By using this file, you agree to the terms and conditions set
forth in the LICENSE.
</font>
</body>
</html>
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