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#!/bin/sh
#
# $Id: alcasar-macup.sh 2692 2019-01-25 23:18:50Z tom.houdayer $
#
# alcasar-macup.sh
#
# This script is distributed under the Gnu General Public License (GPL)

PASSWD_FILE="/root/ALCASAR-passwords.txt"

if [ -z "$CALLING_STATION_ID" ]; then
        exit 1
fi

dbRootPass=$(grep ^db_root= $PASSWD_FILE | cut -d'=' -f2-)

chilli_query_res=$(chilli_query list mac $CALLING_STATION_ID)
[ -z "$chilli_query_res" ] && exit

is_connected=$(echo "$chilli_query_res" | awk '{ print $5 }')
current_mac=$CALLING_STATION_ID

if [ $is_connected == '0' ]; then
        db_query="SELECT username, IFNULL((UNIX_TIMESTAMP(NOW()) - UNIX_TIMESTAMP(acctstoptime)), 0) AS timeout, acctterminatecause FROM radacct WHERE callingstationid='$current_mac' ORDER BY acctstarttime DESC LIMIT 1;"
        db_res=$(mysql -u root -p"$dbRootPass" -D radius -e "$db_query" -Bs)

        if [ -n "$db_res" ]; then
                username=$(echo "$db_res"           | cut -f1)
                timeout=$(echo "$db_res"            | cut -f2)
                acctterminatecause=$(echo "$db_res" | cut -f3)

                if [ "$acctterminatecause" != "User-Request" ]; then
                        db_query="SELECT attribute, value FROM ((SELECT attribute, value FROM radreply WHERE (attribute='Alcasar-Reconnect-Timeout') AND username='$username') UNION (SELECT attribute, value FROM radgroupreply gr LEFT JOIN radusergroup ug ON gr.groupname = ug.groupname WHERE (attribute='Alcasar-Reconnect-Timeout') AND username = '$username' ORDER BY ug.priority) UNION (SELECT attribute, value FROM radgroupreply WHERE groupname = 'ldap' AND (attribute='Alcasar-Reconnect-Timeout'))) attrs GROUP BY attribute;"
                        db_res=$(mysql -u root -p"$dbRootPass" -D radius -e "$db_query" -Bs)

                        reconnectTimeout=$(echo "$db_res" | awk '$1 == "Alcasar-Reconnect-Timeout" { print $2 }')

                        if [ -n "$reconnectTimeout" ] && [ $timeout -le $reconnectTimeout ]; then
                                for i in {1..10}; do
                                        sleep 1
                                        chilli_query authorize mac $current_mac username "$username"
                                        chilli_query_res=$(chilli_query list mac $current_mac)
                                        isPassing=$(echo "$chilli_query_res"    | awk '{ print $3 }')
                                        is_connected=$(echo "$chilli_query_res" | awk '{ print $5 }')
                                        if [ "$is_connected" == '1' ] && [ "$isPassing" == 'pass' ]; then
                                                logger -t alcasar-macup "The MAC address \"$current_mac\" is reconnected with user \"$username\"."
                                                break
                                        fi
                                done
                        fi
                fi
        fi
fi