BUILD INSTRUCTIONS

A makefile was supplied with this which should have built the program. If it
fails please let us know, and here are some hints for building on different
platforms.

Tested OK on Linux/x86 with gcc3.2.
	cc -O3 -pedantic -Wuninitialized -Wall -pipe -mcpu=pentium -march=pentium -fomit-frame-pointer -ffast-math -finline-functions -funroll-loops clamav-milter.c -pthread -lmilter ../libclamav/.libs/libclamav.a ../clamd/cfgfile.o ../clamd/others.o

Compiles OK on Linux/x86 with tcc 0.9.16, but fails to link errors with 'atexit'
	tcc -g -b -lmilter -lpthread clamav-milter.c...

Fails to compile on Linux/x86 with icc6.0 (complains about stdio.h...)
	icc -O3 -tpp7 -xiMKW -ipo -parallel -i_dynamic -w2 clamav-milter.c...
Fails to build on Linux/x86 with icc7.1 with -ipo (fails on libclamav.a - keeps saying run ranlib). Otherwise it builds and runs OK.
	icc -O2 -tpp7 -xiMKW -parallel -i_dynamic -w2 -march=pentium4 -mcpu=pentium4 clamav-milter.c...

Tested with Electric Fence 2.2.2

Compiles OK on Linux/ppc (YDL2.3) with gcc2.95.4. Needs -lsmutil to link.
	cc -O3 -pedantic -Wuninitialized -Wall -pipe -fomit-frame-pointer -ffast-math -finline-functions -funroll-loop -pthread -lmilter ../libclamav/.libs/libclamav.a ../clamd/cfgfile.o ../clamd/others.o -lsmutil
I haven't tested it further on this platform yet.
YDL3.0 should compile out of the box

Sendmail on MacOS/X (10.1) is provided without a development package so this
can't be run "out of the box"

Solaris 8 doesn't have milter support so clamav-milter won't work unless you
rebuild sendmail from source.
Solaris 9 has milter support in the supplied sendmail, but doesn't include
libmilter so you can't develop milter applications on it. Go to sendmail.org,
download the lastest sendmail, cd to libmilter and "make install" there.
Needs -lresolv

FreeBSD4.7 use /usr/local/bin/gcc30. GCC3.0 is an optional extra on
FreeBSD. It comes with getopt.h which is handy. To link you need
-lgnugetopt
	gcc30 -O3 -DCONFDIR=\"/usr/local/etc\" -I. -I.. -I../clamd -I../libclamav -pedantic -Wuninitialized -Wall -pipe -mcpu=pentium -march=pentium -fomit-frame-pointer -ffast-math -finline-functions -funroll-loops clamav-milter.c -pthread -lmilter ../libclamav/.libs/libclamav.a ../clamd/cfgfile.o ../clamd/others.o -lgnugetopt

FreeBSD4.8: should compile out of the box
OpenBSD3.3: the supplied sendmail does not come with Milter support. You
will need to rebuild sendmail from source

INSTALLATION

Install into /usr/local/sbin/clamav-milter, mode 744

See http://www.nmt.edu/~wcolburn/sendmail-8.12.5/libmilter/docs/sample.html

Installations for RedHat Linux and it's derivatives such as YellowDog:
	Add to /etc/mail/sendmail.mc:
	INPUT_MAIL_FILTER(`clamav', `S=local:/var/run/clamav.sock, F=, T=S:4m;R:4m')dnl
	define(`confINPUT_MAIL_FILTERS', `clamav')

	Check entry in /usr/local/etc/clamav.conf of the form:
	LocalSocket /var/run/clamd.sock
	StreamSaveToDisk

	If you already have a filter (such as spamassassin-milter from
	http://savannah.nongnu.org/projects/spamass-milt) add it thus:
	INPUT_MAIL_FILTER(`clamav', `S=local:/var/run/clamav.sock, F=, T=S:4m;R:4m')dnl
	INPUT_MAIL_FILTER(`spamassassin', `S=local:/var/run/spamass.sock, F=, T=C:15m;S:4m;R:4m;E:10m')
	define(`confINPUT_MAIL_FILTERS', `spamassassin,clamav')dnl

You may find INPUT_MAIL_FILTERS is not needed on your machine, however it
is recommended by the Sendmail documentation and I recommend going along
with that.

I suggest putting SpamAssassin first since you're more likely to get spam
than a virus/worm sent to you.

Add to /etc/sysconfig/clamav-milter
	CLAMAV_FLAGS="--max-children=2 local:/var/run/clamav.sock"
or if clamd is on a different machine
	CLAMAV_FLAGS="--max-children=2 --server=192.168.1.9 local:/var/run/clamav.sock"

You should have received a script to put into /etc/init.d with this software.

CHANGE HISTORY

Changes
0.2:	4/3/03	clamfi_abort() now always calls pthread_mutex_unlock
	5/3/03	Only send a bounce if -b is set
		Version now uses -v not -V
		--config-file couldn't be set by -c
0.3	7/3/03	Enhanced the Solaris compile time comment
		No need to save the return result of LogSyslog
		Use LogVerbose
0.4	9/3/03	Initialise dataSocket/cmdSocket correctly
	10/3/03	Say why we don't connect() to clamd
		Enhanced '-l' usage message
0.5	18/3/03	Ported to FreeBSD 4.7
		Source no longer in support, so remove one .. from
		the build instructions
		Corrected the use of strerror_r
0.51	20/3/03	Mention StreamSaveToDisk in the installation
		Added -s option which allows clamd to run on a
		different machine from the milter
0.52	20/3/03	-b flag now only stops the bounce, sends warning
		to recipient and postmaster
0.53	24/3/03	%d->%u in syslog call
	27/3/03	tcpSocket is now of type in_port_t
	27/3/03	Use PING/PONG
0.54	23/5/03	Allow a range of IP addresses as outgoing ones
		that need not be checked
0.55	24/5/03	Use inet_ntop() instead of inet_ntoa()
		Thanks to Krzysztof Olędzki <ole@ans.pl>
0.60	11/7/03	Some TODOs done by Nigel Kukard <nkukard@lbsd.net>
		Should stop a couple of remote chances of crashes
0.60a	22/7/03	Tidied up message when sender is unknown
0.60b	17/8/03	Optionally set postmaster address. Usually one uses
		/etc/aliases, but not everyone want's to...
0.60c	22/8/03	Another go at Solaris support
0.60d	26/8/03	Removed superflous buffer and unneeded strerror call
		ETIMEDOUT isn't an error, but should give a warning
0.60e	09/9/03	Added -P and -q flags by "Nicholas M. Kirsch" <nick@kirsch.org>
0.60f	17/9/03	Changed fprintf to fputs where possible
		Redirect stdin from /dev/null, stdout&stderr to
		/dev/console
0.60g	26/9/03	Handle sendmail calling abort after calling cleanup
		(Should never happen - but it does)
		Added -noxheader patch from dirk.meyer@dinoex.sub.org
0.60h	28/9/03	Support MaxThreads option in config file,
		overriden by --max-children.
		Patch from "Richard G. Roberto" <rgr@dedlegend.com>
0.60i	30/9/03	clamfi_envfrom() now correctly returns SMFIS_TEMPFAIL,
		in a few circumstances it used to return EX_TEMPFAIL
		Patch from Matt Sullivan <matt@sullivan.gen.nz>
0.60j	1/10/03	strerror_r doesn't work on Linux, attempting workaround
		Added support for hard-coded list of email addresses
		who's e-mail is not scanned
0.60k	5/10/03	Only remove old UNIX domain socket if FixStaleSocket
		is set
0.60l	11/10/03 port is now unsigned
		Removed remote possibility of crash if the target
		e-mail address is very long
		No longer calls clamdscan to get the version
0.60m	12/10/03 Now does sanity check if using localSocket
		Gets version info from clamd
		Only reset fd's 0/1/2 if !ForeGround
0.60n	22/10/03 Call pthread_cont_broadcast more often
0.60o	31/10/03 Optionally accept all mails if scanning procedure
		fails (Joe Talbott <josepht@cstone.net>)
0.60p	5/11/03	Only call mutex_unlock when max_children is set
		Tidy up the call to pthread_cond_timedwait
0.60q	11/11/03 Fixed handling of % characters in e-mail addresses
		pointed out by dotslash@snosoft.com
0.65	15/11/03 Upissue of clamav
0.65a	19/11/03 Close cmdSocket earlier
		Added setpgrp()

BUG REPORTS

Please send bug reports and/or comments to Nigel Horne <njh@despammed.com>

TODO

There are several ideas marked as TODO in the source code. If anyone has
any other suggestions please feel free to contact me.