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upgrade_mailman_check.sh
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upgrade_mailman_check.sh
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#!/bin/bash -e
# this script will look for upgrade scripts in
# /usr/share/alternc/install/upgrades-mailman/ and execute them based on the
# extension
#
# an upgrade file is considered only if its basename is a version
# number greater than the $oldvers argument
# remove version from filename by stripping the extension
strip_ext() {
echo $1 | sed 's/\.[^.]*$//'
}
# find the version from a filename by stripping everything but the extension
get_ext() {
echo $1 | sed 's/^.*\.\([^.]*\)$/\1/'
}
# Reading the current version in the DB.
# If the DB exist but the alternc_status table doesn't, we will initialize it below
# In that case we search where we upgrade from in /var/lib/alternc/backups/lastversion from debian.postinstall script
oldvers="`mysql --defaults-file=/etc/alternc/my.cnf --skip-column-names -e "SELECT value FROM alternc_status WHERE name='alternc-mailman_version'"||true`"
if [ -z "$oldvers" ]
then
# no version number, we check from /var/lib/alternc
if [ -f "/var/lib/alternc/backups/alternc-mailman-lastversion" ]
then
oldvers="`cat /var/lib/alternc/backups/alternc-mailman-lastversion`"
else
echo "found no version to upgrade from... it may be a fresh install..."
exit 1
fi
fi
if [ "$oldvers" = '<unknown>' ]
then
# this is not an upgrade
exit 0
fi
# Thanks to that, we handle alternc older than 3.1.0~b.php
mysql --defaults-file=/etc/alternc/my.cnf -e "CREATE TABLE IF NOT EXISTS alternc_status (name VARCHAR(48) NOT NULL DEFAULT '',value LONGTEXT NOT NULL,PRIMARY KEY (name),KEY name (name) ) ENGINE=MyISAM DEFAULT CHARSET=latin1;"
mysql --defaults-file=/etc/alternc/my.cnf -e "INSERT IGNORE INTO alternc_status SET name='alternc-mailman_version',value='$oldvers';"
. /etc/alternc/local.sh
# the upgrade script we are considering
extensions="*.sql *.sh *.php"
cd /usr/share/alternc/install/upgrades-mailman
for file in $( ls $extensions | sort -n ) ; do
if [ -r $file ]; then
# the version in the filename
upvers=`strip_ext $file`
# the extension
ext=`get_ext $file`
if dpkg --compare-versions $upvers gt $oldvers; then
echo "Running upgrade script $file"
# run the proper program to interpret the upgrade script
case "$ext" in
sql)
( echo "BEGIN;"
cat $file
echo "UPDATE alternc_status SET value='$file' WHERE name='alternc-mailman_version';"
echo "COMMIT;"
) | mysql --defaults-file=/etc/alternc/my.cnf
;;
php)
php -q $file
;;
sh)
bash $file
;;
*)
echo "skipping $file, not recognized !"
;;
esac
fi
fi
done