1<HTML>
2<HEAD><TITLE>xxfi_header</TITLE></HEAD>
3<BODY>
4<!--
5$Id: xxfi_header.html,v 1.18 2013-11-22 20:51:39 ca Exp $
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7<H1>xxfi_header</H1>
8
9<TABLE border="0" cellspacing=4 cellpadding=4>
10<!---------- Synopsis ----------->
11<TR><TH valign="top" align=left width=100>SYNOPSIS</TH><TD>
12<PRE>
13#include &lt;libmilter/mfapi.h&gt;
14sfsistat (*xxfi_header)(
15	SMFICTX *ctx,
16	char *headerf,
17	char *headerv
18);
19</PRE>
20Handle a message header.
21</TD></TR>
22
23<!----------- Description ---------->
24<TR><TH valign="top" align=left>DESCRIPTION</TH><TD>
25<TABLE border="1" cellspacing=1 cellpadding=4>
26<TR align="left" valign=top>
27<TH width="80">Called When</TH>
28<TD>xxfi_header is called once for each message header.</TD>
29</TR>
30<TR align="left" valign=top>
31<TH>Default Behavior</TH>
32<TD>Do nothing; return SMFIS_CONTINUE.</TD>
33</TR>
34</TABLE>
35</TD></TR>
36
37<!----------- Arguments ---------->
38<TR><TH valign="top" align=left>ARGUMENTS</TH><TD>
39    <TABLE border="1" cellspacing=0>
40    <TR bgcolor="#dddddd"><TH>Argument</TH><TH>Description</TH></TR>
41    <TR valign="top"><TD>ctx</TD>
42	<TD>Opaque context structure.
43	</TD></TR>
44    <TR valign="top"><TD>headerf</TD>
45	<TD> Header field name.
46	</TD></TR>
47    <TR valign="top"><TD>headerv</TD>
48	<TD>Header field value.
49	The content of the header may include folded white space,
50	i.e., multiple lines with following white space
51	where lines are separated by LF (not CRLF).
52	The trailing line terminator (CRLF) is removed.
53	</TD></TR>
54    </TABLE>
55</TD></TR>
56
57<!----------- Notes ---------->
58<TR>
59<TH valign="top" align=left>NOTES</TH>
60<TD>
61<UL>
62<LI>Starting with sendmail 8.14, spaces after the colon in a header
63field are preserved if requested using the flag
64<A HREF="xxfi_negotiate.html#SMFIP_HDR_LEADSPC"><CODE>SMFIP_HDR_LEADSPC</CODE></A>.
65That is, the header
66
67<PRE>
68From: sender &lt;f@example.com&gt;
69To:  user &lt;t@example.com&gt;
70Subject:no
71</PRE>
72
73will be sent to a milter as
74
75<PRE>
76"From", " sender &lt;f@example.com&gt;"
77"To", "  user &lt;t@example.com&gt;"
78"Subject", "no"
79</PRE>
80
81while previously
82(or without the flag
83<A HREF="xxfi_negotiate.html#SMFIP_HDR_LEADSPC"><CODE>SMFIP_HDR_LEADSPC</CODE></A>)
84it was:
85
86<PRE>
87"From", "sender &lt;f@example.com&gt;"
88"To", "user &lt;t@example.com&gt;"
89"Subject", "no"
90</PRE>
91
92
93<LI>Later filters will see header changes/additions made by earlier ones.
94<LI>For much more detail about header format, please see
95RFC <A href="http://www.rfc-editor.org/rfc/rfc822.html">822</A>
96and
97RFC <A href="http://www.rfc-editor.org/rfc/rfc2822.html">2822</A>
98</UL>
99</TD>
100</TR>
101</TABLE>
102
103<HR size="1">
104<FONT size="-1">
105Copyright (c) 2000, 2003, 2006 Proofpoint, Inc. and its suppliers.
106All rights reserved.
107<BR>
108By using this file, you agree to the terms and conditions set
109forth in the LICENSE.
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