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<HEAD><TITLE>smfi_setreply</TITLE></HEAD>
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$Id: smfi_setreply.html,v 1.17 2006/12/21 18:30:35 ca Exp $
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<H1>smfi_setreply</H1>
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<TABLE border="0" cellspacing=4 cellpadding=4>
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<!---------- Synopsis ----------->
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<TR><TH valign="top" align=left width=100>SYNOPSIS</TH><TD>
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<PRE>
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#include <libmilter/mfapi.h>
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int smfi_setreply(
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SMFICTX *ctx,
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char *rcode,
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char *xcode,
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char *message
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);
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</PRE>
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Set the default SMTP error reply code. Only 4XX and 5XX replies are accepted.
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</TD></TR>
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<!----------- Description ---------->
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<TR><TH valign="top" align=left>DESCRIPTION</TH><TD>
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<TABLE border="1" cellspacing=1 cellpadding=4>
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<TR align="left" valign=top>
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<TH width="80">Called When</TH>
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<TD>smfi_setreply may be called from any of the xxfi_ callbacks
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other than xxfi_connect.</TD>
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</TR>
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<TR align="left" valign=top>
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<TH width="80">Effects</TH>
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<TD>Directly set the SMTP error reply code for this connection. This code
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will be used on subsequent error replies resulting from actions taken by
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this filter.</TD>
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</TR>
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</TABLE>
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<!----------- Arguments ---------->
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<TR><TH valign="top" align=left>ARGUMENTS</TH><TD>
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<TABLE border="1" cellspacing=0>
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<TR bgcolor="#dddddd"><TH>Argument</TH><TH>Description</TH></TR>
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<TR valign="top"><TD>ctx</TD>
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<TD>Opaque context structure.
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</TD></TR>
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<TR valign="top"><TD>rcode</TD>
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<TD>The three-digit (RFC 821/2821) SMTP reply code, as a
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null-terminated string. rcode cannot be NULL, and must be a valid
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4XX or 5XX reply code.
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</TD></TR>
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<TR valign="top"><TD>xcode</TD>
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<TD>The extended (RFC 1893/2034) reply code. If xcode is NULL, no
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extended code is used. Otherwise, xcode must conform to RFC 1893/2034.
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</TD></TR>
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<TR valign="top"><TD>message</TD>
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<TD>The text part of the SMTP reply. If message is NULL, an empty message is used.
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</TD></TR>
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</TABLE>
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</TD></TR>
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<!----------- Return values ---------->
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<TR>
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<TH valign="top" align=left>RETURN VALUES</TH>
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<TD>smfi_setreply will fail and return MI_FAILURE if:
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<UL>
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<LI>The rcode or xcode argument is invalid.
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<LI>A memory-allocation failure occurs.
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</UL>
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Otherwise, it return MI_SUCCESS.
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</TD>
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</TR>
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<!----------- Notes ---------->
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<TR align="left" valign=top>
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<TH>NOTES</TH>
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<TD>
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<UL>
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<LI>Values passed to smfi_setreply are not checked for standards compliance.
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<LI>The message parameter should contain only printable characters,
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other characters may lead to undefined behavior.
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For example, CR or LF will cause the call to fail,
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single '%' characters will cause the text to be ignored
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(if there really should be a '%' in the string,
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use '%%' just like for <TT>printf(3)</TT>).
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<LI>For details about reply codes and their meanings, please see RFC's
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<A href="http://www.rfc-editor.org/rfc/rfc821.txt">821</A>/
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<A href="http://www.rfc-editor.org/rfc/rfc2821.txt">2821</A>
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and
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<A href="http://www.rfc-editor.org/rfc/rfc1893.txt">1893</A>/
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<A href="http://www.rfc-editor.org/rfc/rfc2034.txt">2034</A>.
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<LI>If the reply code (rcode) given is a '4XX' code but SMFI_REJECT is used
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for the message, the custom reply is not used.
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<LI>Similarly, if the reply code (rcode) given is a '5XX' code but
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SMFI_TEMPFAIL is used for the message, the custom reply is not used.
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<BR>
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Note: in neither of the last two cases an error is returned to the milter,
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libmilter silently ignores the reply code.
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<LI>If the milter returns SMFI_TEMPFAIL and sets the reply code to '421',
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then the SMTP server will terminate the SMTP session with a 421 error code.
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</UL>
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</TD>
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</TR>
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</TABLE>
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<HR size="1">
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<FONT size="-1">
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2003-03-29 14:12:53 -05:00
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Copyright (c) 2000, 2002-2003 Sendmail, Inc. and its suppliers.
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All rights reserved.
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<BR>
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By using this file, you agree to the terms and conditions set
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forth in the LICENSE.
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</FONT>
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</BODY>
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</HTML>
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