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File name : spamassassin

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#!/bin/sh

# Duncan Findlay
# duncf@debian.org

# Daily cronjob for SpamAssassin updates. This isn't pretty but it
# should do the job.

CRON=0

test -f /etc/default/spamassassin && . /etc/default/spamassassin

test -x /usr/bin/sa-update || exit 0
test -x /etc/init.d/spamassassin || exit 0
command -v gpg > /dev/null || exit 0

if [ "$CRON" = "0" ] ; then
    exit 0
fi

# If there's a problem with the ruleset or configs, print the output
# of spamassassin --lint (which will typically get emailed to root)
# and abort.
die_with_lint() {
    env -i LANG="$LANG" PATH="$PATH" start-stop-daemon \
        --chuid debian-spamd:debian-spamd --start \
        --exec /usr/bin/spamassassin -- -D --lint 2>&1
    exit 1
}

do_compile() {
    if [ -x /usr/bin/re2c -a -x /usr/bin/sa-compile ]; then
        env -i LANG="$LANG" PATH="$PATH" start-stop-daemon \
            --chuid debian-spamd:debian-spamd --start \
            --exec /usr/bin/sa-compile -- --quiet

# Fixup perms -- group and other should be able to
        # read and execute, but never write.  Works around
        # sa-compile's failure to obey umask.
        runuser -u debian-spamd -- \
                chmod -R go-w,go+rX /var/lib/spamassassin/compiled
    fi
}

# Tell a running spamd to reload its configs and rules.
reload() {
    # Reload
    if which invoke-rc.d >/dev/null 2>&1; then
        invoke-rc.d --quiet spamassassin status > /dev/null && \
          invoke-rc.d spamassassin reload > /dev/null
    else
        /etc/init.d/spamassassin reload > /dev/null
    fi
    if [ -d /etc/spamassassin/sa-update-hooks.d ]; then
        run-parts --lsbsysinit /etc/spamassassin/sa-update-hooks.d
    fi
}

# Sleep for up to 3600 seconds if not running interactively
if [ ! -t 0 ]; then
    RANGE=3600
    number=`od -vAn -N2 -tu4 < /dev/urandom`
    number=`expr $number "%" $RANGE`
    sleep $number
fi

# Update
umask 022
env -i LANG="$LANG" PATH="$PATH" http_proxy="$http_proxy" \
    start-stop-daemon --chuid debian-spamd:debian-spamd --start \
    --exec /usr/bin/sa-update -- \
    --gpghomedir /var/lib/spamassassin/sa-update-keys 2>&1

case $? in
    0)
        # got updates!
        env -i LANG="$LANG" PATH="$PATH" start-stop-daemon \
            --chuid debian-spamd:debian-spamd --start \
            --exec /usr/bin/spamassassin -- --lint 2>&1 || die_with_lint
        do_compile
        reload
        ;;
    1)
        # no updates
        exit 0
        ;;
    2)
        # lint failed!
        die_with_lint
        ;;
    *)
        echo "sa-update failed for unknown reasons" 1>&2
        ;;
esac

# Local variables:
# mode: shell-script
# tab-width: 4
# indent-tabs-mode: nil
# end: