renamed gpgpy-ezmlm to crypto-ezmlm
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129
crypto-ezmlm/trunk/bin/gpgpy-ezmlm-queue
Executable file
129
crypto-ezmlm/trunk/bin/gpgpy-ezmlm-queue
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#!/bin/sh
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#
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# This file is part of gpgpy-ezmlm - an encryption filter for the
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# ezmlm-idx mailinglist manager.
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#
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# Copyright 02007 Sense.Lab e.V. <info@senselab.org>
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#
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# This script is used to decide if we have to call qmail-queue directly
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# or if we should call the gpgpy re-encrypting wrapper instead.
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#
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# Add the following environment setting to qmail-start (e.g. in
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# /var/qmail/rc):
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# QMAILQUEUE=PATH_TO_THIS_SCRIPT
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#
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# In case you did not install qmail in its default directory (/var/qmail)
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# or if you use a filtering qmail-queue wrapper (e.g. for spam filtering)
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# then you should change the setting GPGPY_QMAILQUEUE so that it contains
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# the path of your qmail-queue program.
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#
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#
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# gpgpy-ezmlm is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# gpgpy-ezmlm is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with the CryptoBox; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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#
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##################### configuration #####################
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# maybe you have to adjust the following lines according to your setup
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# the following settings can also be overriden by environment settings
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# with the same name
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# the original qmail-queue program
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GPGPY_QMAILQUEUE=${GPGPY_QMAILQUEUE:=/var/qmail/bin/qmail-queue}
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# the python filter of gpgpy-ezmlm-queue
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GPGPY_EZMLM_ENCRYPT=${GPGPY_EZMLM_ENCRYPT:=/usr/local/bin/gpgpy-ezmlm-encrypt}
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# are all encrypted mailinglists handled by a single user?
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# then put its UID here - for all other UIDs the original qmail-queue will be
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# used instead
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GPGPY_RESTRICT_UID=${GPGPY_RESTRICT_UID:=}
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# we read our configuration from 'conf-gpgpy'
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GPGPY_EZMLM_CONF_FILE="conf-gpgpy"
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# call the original qmail-queue program without the changed QMAILQUEUE setting
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EXEC_ORIG_QUEUE="exec env --unset=QMAILQUEUE $GPGPY_QMAILQUEUE"
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##################### self-test #########################
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# should we do some self-tests?
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if test "$#" -eq 1 -a "$1" = "test"
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then error=
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# check if the original qmail-queue is executable
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if test -x "$GPGPY_QMAILQUEUE"
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then true
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else error=yes
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echo >&2 "Could not find executable qmail-queue: $GPGPY_QMAILQUEUE"
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fi
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# check if the gpgpy-ezmlm wrapper for qmail-queue exists
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# also check if it returns any errors
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if test -x "$GPGPY_EZMLM_ENCRYPT"
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then if "$GPGPY_EZMLM_ENCRYPT"
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then true
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else error=yes
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fi 2>&1 | sed 's/^/[gpg-ezmlm-encrypt] /' >&2
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else error=yes
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echo >&2 "Could not find executable gpgpy-ezmlm-queue: $GPGPY_EZMLM_ENCRYPT"
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fi
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# check GPGPY_RESTRICT_UID for invalid values
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if test -n "$GPGPY_RESTRICT_UID"
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then if test 0 -le "$GPGPY_RESTRICT_UID" 2>/dev/null
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then true
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else error=yes
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echo >&2 "Invalid value of GPGPY_RESTRICT_UID ($GPGPY_RESTRICT_UID) - only integer values are allowed!"
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fi
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fi
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# print results to stderr
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if test -z "$error"
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then echo "Successfully finished self-tests"
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exit 0
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else echo >&2
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echo >&2 "Some self-tests failed - please fix them before deploying gpgpy-ezmlm!"
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exit 81
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fi
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fi
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################### queue selection #####################
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# do some tests to decide, if we should run the gpgpy filter or not
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test -n "$GPGPY_RESTRICT_UID" -a "$UID" != "$GPGPY_RESTRICT_UID" && $EXEC_ORIG_QUEUE
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# the HOME setting is necessary
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test -z "$HOME" && $EXEC_ORIG_QUEUE
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# which dot-qmail file should we check? (see 'man qmail-command' for details)
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if test -z "$EXT"
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then DOTQMAIL_FILE=$HOME/.qmail
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else DOTQMAIL_FILE=$HOME/.qmail-$EXT
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fi
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# does the dot-qmail file exist?
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test -r "$DOTQMAIL_FILE" || $EXEC_ORIG_QUEUE
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# filter the respective mailing list directory of this delivery
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MAILINGLIST_DIR=$(grep "/ezmlm-send '" "$DOTQMAIL_FILE" | sed "s#^.* '\(.*\)'.*\$#\1#")
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# is it a mailinglist directory?
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test -e "$MAILINGLIST_DIR/lock" || $EXEC_ORIG_QUEUE
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# is this mailinglist configured for gpgpy-ezmlm?
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test -r "$MAILINGLIST_DIR/$GPGPY_EZMLM_CONF_FILE" || $EXEC_ORIG_QUEUE
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# ok - it is a delivery of an encrypted mailinglist
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exec env QMAILQUEUE=$GPGPY_QMAILQUEUE "$GPGPY_EZMLM_ENCRYPT" "$MAILINGLIST_DIR"
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