# $Id$
# GNATS procmail file
#
# - MH style mail folders
# - Use this instead of alias for "bugs" aliases instead of pipes so that we
# 	can preprocess emails first
# - First order of business, spam filtering.
# - Spam filtering is available on mail server, but we want local control
# - Add autoacks for queue submissions (Reply-to: nobody)
#
# Administrative email still should be aliased to "root"
#
# See also: procmail(8), procmailrc(5), procmailex(5), procmailsc(5),
#   formail(8), lynx(1), bzip2(1), gnats(7), queue-pr(8), mail-query
#
MAILDIR=$HOME/Mail
SHELL=/bin/bash
DEFAULT=inbox/.
COMSAT=no

MY_ADDR=gnats@BUGHOST.MYDOMAIN
MY_XLOOP=$MY_ADDR
YEAR_MONTH=`date +%Y-%m`
MAXSIZE=51200

LOGABSTRACT=yes
VERBOSE=no
LOGFILE=procmail-${YEAR_MONTH}.log

# Kill duplicates
:0 Wh: msgid.lock
| formail -D 8192 msgid.cache 

# Spam filtering before archiving
:0 fw
* ! ^X-Spam-Status: Yes
| /usr/bin/spamc -s $MAXSIZE -d SPAMASSASSIN-HOST.MYDOMAIN

# Attempt to archive and save to spam folder
:0
* $ < $MAXSIZE
* ^X-Spam-Status: Yes
{
	:0 wc
	| /usr/bin/bzip2 -9 >> spam-${YEAR_MONTH}.mbox.bz2

	:0
	spam/.
}

# Compressed Archive if not spam and not too large
:0 c
* $ < $MAXSIZE
* ! ^X-Spam-Status: Yes
{
	:0 w
	| /usr/bin/bzip2 -9 >> received-${YEAR_MONTH}.mbox.bz2

		:0 e
		backup/.
}

# Score Kill List -- positive score to kill
# Only matching headers so far
:0 H
* -99^0

# Basic mailer daemon filtering
* 100^0 ^FROM_DAEMON
* 100^0 ^From.*(postmaster|mailer-daemon|root)
* 100^0 ^Precedence:.*(bulk|junk)

# VIRUSES and BANNED files
* 100^0 ^From.*abuse@cbs\.umn\.edu
*  50^0 ^Subject:.*(VIRUS|BANNED)

# Spammers
* 100^0 ^From.*webadmin@coastal\.gov\.bb
* 100^0 ^From.*@bp\.com
* 100^0 ^From.*\(via the vacation program\)
* 100^0 ^From.*derek\.yikes@shaw\.ca
* 100^0 ^From.*wseas_ece@canada\.com

# Spam phrase matching
* 100^1 ^Subject:.*NPSAS Initiative
{
	:0
	* ^Message-Id:\/.*
	# Already archived. Log message id for reference.
	{ 
		LOG="Killed Message-ID: $MATCH
" 
	}

	# Kill it
	:0
	/dev/null
}

# Fix HTML-only email
:0
* ! ^Content-Type: multipart/
*   ^Content-Type: text/html
{
	# Change body with lynx and append footer
	:0 fbw
	| (lynx -dump -force-html -stdin; echo ""; \
		echo "-=-=[CONVERTED FROM HTML VIA LYNX]=-=-")

	# Prepend body header
	:0 Afbw
	| (echo "-=-=[CONVERTED FROM HTML VIA LYNX]=-=-"; cat -)

	# Change header content-type (preserve old)
	:0 Afhw
	| formail -i "Content-Type: text/plain"
}

# Route PR's to queuing program
PR_REGEX='(bugs|help|webmaster|request)'
:0 w
* $ ^TO$PR_REGEX
{ 
	# We've been getting very large files.  We would like to reject these
	# with a friendly note.  This is in bytes (50K).  There is no copy
	# here, because we want to quell this email (and it's already
	# archived).
	:0
	* $ > $MAXSIZE
	| ( formail -r ; cat toobig.txt ) | $SENDMAIL -oi -t

		# save to failed-queue
		:0 A
		failed-queue/.

	# Queue the problem
	:0
	| /usr/lib/gnats/queue-pr -q

		# Save if failed queue-pr
		:0 e
		failed-queue/.
}

# Route mail queries through the mail-query program
:0 w
* ^TOquery-pr
| /usr/lib/gnats/mail-query

	:0 e
	failed-query/.

# Bounce mail addressed to gnats and gnats-admin to root user
:0 fhw
* $ ! ^X-Loop: $MY_XLOOP
* ^TOgnats(-admin)?
| formail -I"X-Loop: $MY_XLOOP" 

	:0 a
	! -oi root@MYDOMAIN

# Default email box (inbox/.)