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<B><A HREF="dccsight.html">dccsight(8)</A></B> Distributed Checksum Clearinghouse <B><A HREF="dccsight.html">dccsight(8)</A></B>
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<H2><A NAME="NAME">NAME</A></H2><PRE>
<B>dccsight</B> -- Distributed Checksum Clearinghouse raw checksum interface
</PRE>
<H2><A NAME="SYNOPSIS">SYNOPSIS</A></H2><PRE>
<B>dccsight</B> [<B>-VdQC</B>] [<B>-h</B> <I>homedir</I>] [<B>-m</B> <I>map</I>] [<B>-w</B> <I>whiteclnt</I>] [<B>-t</B> <I>targets</I>]
[<B>-i</B> <I>infile</I>] [<B>-L</B> <I>ltype,facility.level</I>]
</PRE>
<H2><A NAME="DESCRIPTION">DESCRIPTION</A></H2><PRE>
<B>Dccsight</B> reads one or more lines containing DCC checksums, reports them
to a DCC server, and writes a X-DCC header line. It can be used to
report checksums obtained from <B><A HREF="dccproc.html">dccproc(8)</A></B> using <B>-C</B>.
<A NAME="OPTIONS"><B>OPTIONS</B></A>
The following options are available:
<A NAME="OPTION-V"><B>-V</B></A> displays the version of the DCC raw checksum interface.
<A NAME="OPTION-d"><B>-d</B></A> enables debugging output from the DCC client software. Additional
<B>-d</B> options increase the number of messages.
<A NAME="OPTION-Q"><B>-Q</B></A> only queries the DCC server about the checksums instead of reporting
and then querying. This is useful when <B>dccsight</B> is used to filter
mail that has already been reported to a DCC server by another DCC
client such as <B><A HREF="dccm.html">dccm(8)</A></B>. This can also be useful when applying a
private white or black list to mail that has already been reported
to a DCC server. No single mail message should be reported to a DCC
server more than once per recipient, such as would happen if
<B>dccsight</B> is not given <B>-Q</B> when processing a stream of mail that has
already been seen by a DCC client. Additional reports of a message
increase its apparent "bulkness."
<A NAME="OPTION-C"><B>-C</B></A> outputs the checksums for the message as well as the X-DCC header.
<A NAME="OPTION-h"><B>-h</B></A> <I>homedir</I>
overrides the default DCC home directory, <I>/var/lib/dcc</I>.
<A NAME="OPTION-m"><B>-m</B></A> <I>map</I>
specifies a name or path of the memory mapped parameter file instead
of the default <I>map</I> in the DCC home directory. It should be created
with the <B><A HREF="cdcc.html">cdcc(8)</A></B> command.
<A NAME="OPTION-w"><B>-w</B></A> <I>whiteclnt</I>
specifies an optional file containing SMTP client IP addresses and
SMTP headers of mail that do not need X-DCC headers and whose check-
sums should not be reported to the DCC server. It can also contain
checksums of spam. If the pathname is not absolute, it is relative
to the DCC home directory. Thus, individual users with private
whitelists usually specify them with absolute paths. It is useful
to <I>include</I> a common or system-wide whitelist in private lists.
The format of the <B>dccsight</B> whiteclnt file is the same as the
<I>whitelist</I> file required by <B><A HREF="dbclean.html">dbclean(8)</A></B> and <B><A HREF="dccsight.html">dccsight(8)</A></B>. Because this
list is used frequently, a companion file is used. It has the same
pathname but with an added suffix of <I>.dccw</I>. After being created
empty, it will contain an automatic memory mapped hash table of the
main file.
<A NAME="OPTION-t"><B>-t</B></A> <I>targets</I>
specifies the number of addressees of the message if other than 1.
The string <I>many</I> instead of a number asserts that there were too many
addressees and that the message is unsolicited bulk email.
<A NAME="OPTION-i"><B>-i</B></A> <I>infile</I>
specifies an input file instead of standard input. If not absolute,
the pathname is interpreted relative to the directory in which
<B>dccsight</B> was started.
<A NAME="OPTION-L"><B>-L</B></A> <I>ltype,facility.level</I>
specifies how messages should be logged. <I>Ltype</I> must be <I>error</I>, <I>info</I>,
or <I>off</I> to indicate which of the two types of messages are being con-
trolled or to turn off all <B>syslog(3)</B> messages from <B>dccsight</B>. <I>Level</I>
must be a <B>syslog(3)</B> level among <I>EMERG</I>, <I>ALERT</I>, <I>CRIT</I>, <I>ERR</I>, <I>WARNING</I>,
<I>NOTICE</I>, <I>INFO</I>, and <I>DEBUG</I>. <I>Facility</I> must be among <I>AUTH</I>, <I>AUTHPRIV</I>,
<I>CRON</I>, <I>DAEMON</I>, <I>FTP</I>, <I>KERN</I>, <I>LPR</I>, <I>MAIL</I>, <I>NEWS</I>, <I>USER</I>, <I>UUCP</I>, and <I>LOCAL0</I>
through <I>LOCAL7</I>. The default is equivalent to
<B>-L</B> <I>info,MAIL.NOTICE</I> <B>-L</B> <I>error,MAIL.ERR</I>
<B>dccsight</B> exits 0 on success, and >0 if an error occurs.
</PRE>
<H2><A NAME="FILES">FILES</A></H2><PRE>
<A NAME="FILE-/var/lib/dcc">/var/lib/dcc</A> DCC home directory in which other files are found.
<A NAME="FILE-map">map</A> memory mapped file in the DCC home directory of information
concerning DCC servers.
<A NAME="FILE-whiteclnt">whiteclnt</A> contains the client whitelist in the format described in
<B><A HREF="dcc.html">dcc(8)</A></B>.
<A NAME="FILE-whiteclnt.dccw">whiteclnt.dccw</A>
memory mapped hash table of the <I>whiteclnt</I> file.
</PRE>
<H2><A NAME="SEE-ALSO">SEE ALSO</A></H2><PRE>
<B><A HREF="cdcc.html">cdcc(8)</A></B>, <B><A HREF="dcc.html">dcc(8)</A></B>, <B><A HREF="dbclean.html">dbclean(8)</A></B>, <B><A HREF="dccd.html">dccd(8)</A></B>, <B><A HREF="dblist.html">dblist(8)</A></B>, <B><A HREF="dccproc.html">dccproc(8)</A></B>, <B><A HREF="dccm.html">dccm(8)</A></B>,
<B><A HREF="dccifd.html">dccifd(8)</A></B>, <B>mail(1)</B>, <B>procmail(1)</B>.
</PRE>
<H2><A NAME="HISTORY">HISTORY</A></H2><PRE>
Implementation of <B>dccsight</B> was started at Rhyolite Software in 2000.
This document describes version 1.3.113.
July 20, 2009
</PRE>
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