# BEFORE editing this file, you should make sure that it is not linked to
# the master version (../.etc/rc.request) anymore (i.e. "delink rc.request"
# if you do not want your changes to affect all lists).
#
# New mails can be temporarily stalled by creating the file rc.lock (either in
# ../.etc for all lists or in the current directory for this list only).

#$Id: rc.request,v 1.72 1994/10/31 18:57:21 berg Exp $

INCLUDERC=$RC_INIT
INCLUDERC=$RC_CUSTOM

INCLUDERC=$RC_LOCAL_REQUEST_00

LOCKFILE=tmp.lock	# for reusing tmp.(request|from)
			# also makes sure that the load doesn't go sky-high
			# when a lot of mail arrives concurrently

#
# We now check:
#	If the length is roughly within bounds.
#	That it is not a reply or something.
#	That we didn't send it ourselves.
#	That it wasn't sent by a daemon of some kind.
#
# If everything matches, we extract the sender address into tmp.from
#

:0
* < 8192
* $$daemon_bias
* $!^(X-(Loop: $listaddr|Diagnostic:)|$X_COMMAND:)
* -100^0 ^FROM_DAEMON
*    1^0
{

:0
* -100^0 ^Subject:(.*[^a-z])?(Re:|erro|change|problem|((can)?not|.*n't)\>)
*  100^0 ^Subject:[	 ]*archive
*    1^0
{
  :0 whc
  | formail -rtz -xTo: >tmp.from

#
# Store the whole mail in tmp.request, for later reference.
#

  :0 wc
  | formail -IIn-Reply-To: -ICc: >tmp.request

#
# Check for a missing Subject: line.
#

  :0 wfh
  * !^Subject:
  | formail -a "Subject: "

  INCLUDERC=$RC_LOCAL_REQUEST_10

###############################################################################
# Reader beware, the following four regular expressions are not for the faint #
# of heart.  It'll suffice to say that they accomplish their intended job 98% #
# of the time.								      #
###############################################################################

#
# Is it an archive retrieval command?
#

  :0 HB w
  * ^^(.+$)*Subject:[	 ]*(([(<]none[>)])?$(.+$)*(^[	 ]*)+)?\
     (archive:?([	 ]|$)|\
     (version|search|rel(evance)?|(r)?[fe]?grep|(r)?date|(r)?chron(ological)?)([	 ]+[^	 ]*)?$)
  {
    :0 W
    * 1^1 $${restrict_archive:+!}
    * 2^0 ? formail -zrtxTo: | \
	   multigram -b1 -m -l$submit_threshold -L$domain \
	    -x$listaddr -x$listreq accept accept2
    | arch_retrieve

    :0 E fhw
    | formail -A "X-Diagnostic: Return address not on the accept list"
  }

#
# Is it an info or help request?  Send back the help.txt and the
# optional info.txt file.
# We do the same on a complete empty mail (except for perhaps a signature).
#

  :0 EHB
  *  3^0 ^^(.+$)*Subject:[	 ]*(([(<]none[>)])?$(.+$)*(^[	 ]*)+)?\
     [a-z,.	 ]*(help|info(rm(ation)?)?)\>
  *  1^0 ^^(.+$)*Subject:[	 ]*([(<]none[>)])?$
  * -2^0 ^^(.+$)*(^[	 ]*)+[a-z]
  *  3^0 ^^(.+$)*^([	 ]*$)*--
  {
    :0 hw ${cc_requests:+c}
    | (formail -i"From: $listreq" -rtA"X-Loop: $listaddr"; \
       cat help.txt info.txt 2>/dev/null ) | $SENDMAIL $sendmailOPT -t

    :0 wfh
    | formail -A "X-Diagnostic: help sent"
  }

  INCLUDERC=$RC_LOCAL_REQUEST_20

  LOGABSTRACT=yes

#
# If auto_help is set, anything undecipherable gets back the help.txt and the
# optional info.txt file.
#

  :0 EhB w ${cc_requests:+c}
  * $!${auto_help:+!}
  * $!X-Loop: $listaddr
  {
    :0 hw ${cc_requests:+c}
    | (formail -i"From: $listreq" -rtA"X-Loop: $listaddr"; \
       cat help.txt info.txt 2>/dev/null ) | $SENDMAIL $sendmailOPT -t

    :0 wfh
    | formail -A "X-Diagnostic: undecipherable, help sent"
  }

}
}

LOGABSTRACT=yes

#
# Could it be a bounce message from a daemon?  Hand it down to procbounce
# which will evaluate it.
#

:0 wic
* $!^(Subject:(.*[^a-z])?Re:|\
     X-(Loop: $listaddr|Diagnostic:)|$X_COMMAND:)
* ^FROM_DAEMON
| sed -e $cutoff_bounce' q' >tmp.request

  #
  # Sink all messages we can recognise to be queue warnings
  #

  :0 Ah
  * ^Subject: \
     (WARNING: message delayed|\
      Returned mail: warning: cannot send message for|\
      Undeliverable (RFC822 )?mail: temporarily unable to deliver|\
      \*\*\* WARNING - Undelivered mail in mailqueue)
  /dev/null

  :0 Ah
  * ^Subject: (Warning from|mail warning|Waiting Mail)
  * ^(From|Sender):.*(uucp|mmdf)
  /dev/null

  :0 AhBD
  * $^(..?)?X-Loop: $listaddr \(bounce\)
  * ^(..?)?Subject: You have been removed from
  /dev/null

  #
  # Anything that still survived is most likely to be a bounce message.
  #

  :0 Ahfw
  | procbounce

#
# Or is it a remote X-Command from our maintainer?
#

:0 wf:dist.lock
* $^$X_COMMAND:.*$maintainer[	 ]*$X_COMMAND_PASSWORD
* $!^X-Loop: $listaddr
| x_command

LOCKFILE				# we don't need the lockfile anymore

#
# Anything not taken care of yet will be served to the maintainer of the list.
#
# To make it easier on him, we include a small hint about what might be the
# problem (by adding X-Diagnostic: fields to the header).
#

:0 wfh
* !< $size_limit
| formail -A "X-Diagnostic: Submission size exceeds $size_limit bytes"

:0 wfh
* ^FROM_DAEMON
| formail -A "X-Diagnostic: Mail coming from a daemon, ignored"

:0 HB wfh
* $^X-Loop: $listaddr
| formail -A "X-Diagnostic: Possible loopback problem"

:0
* !^X-(Diagnostic|Processed):
{
  :0 wfh
  * $^$X_COMMAND:
  | formail -A "X-Diagnostic: Suspicious $X_COMMAND format"

  :0 HB wfh
  * ? formail -IReceived: -IX-Envelope-To: -IIn-Reply-To: -ICc: | \
       multigram -b1 -x$listreq -x$listaddr -l$reject_threshold dist
  | formail -A "X-Diagnostic: Already on the subscriber list" \
     -A "X-Diagnostic: `multigram -b1 -x$listreq -x$listaddr \
     -l$reject_threshold dist`"
}

INCLUDERC=$RC_LOCAL_REQUEST_30

:0 wfh
* !^X-(Diagnostic|Processed):
| formail -A"X-Diagnostic: Unprocessed"

:0 wfh
| formail -A"X-Envelope-To: $X_ENVELOPE_TO"

#
# If this list does not have a maintainer e-mail address, drop things in
# the file request.
#

:0:
* $${maintainer:+!}
request

:0 w
| formail -R"From X-Envelope-From:" -iDate: -iReturn-Receipt-To: \
   -iAcknowledge-To: | $SENDMAIL $sendmailOPT $sendmailOPTp $maintainer

:0 wfh
| formail -A"X-Diagnostic: Maintainer $maintainer could not be reached"

HOST=continue_with_../.etc/rc.post