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#!/bin/bash

#in /etc/freeswitch/vars.xml we are changing the IP values and updating the database:
#<X-PRE-PROCESS cmd="set" data="external_rtp_ip=1.2.3.4" />
#<X-PRE-PROCESS cmd="set" data="external_sip_ip=1.2.3.4" />

#NOTE: if you are behind nat, you'll (which you are if you are doing this
#you also need to go here and do this, or the script checks WILL NOT WORK, nor will your system
# advanced -> sip profiles
#  edit the internal and extneral profiles so that these values are set to:
#   ext-rtp-ip = autonat:$${external_rtp_ip}
#   ext-sip-ip = autonat:$${external_sip_ip}

#you'll probably also want a cronjob for this
#cat /etc/cron.d/fix_fs_ip
# */10 * * * * root /usr/local/bin/fix_fs_ext_ip

wanip=$(dig @resolver4.opendns.com myip.opendns.com +short -4)
#echo "WanIP=$wanip"


grep external_rtp_ip /etc/freeswitch/vars.xml | grep $wanip > /dev/null
rtp_status=$?
grep external_sip_ip /etc/freeswitch/vars.xml | grep $wanip > /dev/null
sip_status=$?

let ip_check_status=$rtp_status+$sip_status
#echo "ip_check_status=$ip_check_status"

if [ $ip_check_status -eq 0 ]; then
        #we match
        logger -s "[fix_fs_ext_ip] all good, IP $wanip has not changed"
else

        #echo "IP was not found in vars.xml"
        rm /var/cache/fusionpbx/configuration.sofia.conf.voip
        sed -i /etc/freeswitch/vars.xml -e s,external_rtp_ip=.*\/\>,external_rtp_ip=$wanip\"\ \/\>,g > /dev/null
        sed -i /etc/freeswitch/vars.xml -e s,external_sip_ip=.*\/\>,external_sip_ip=$wanip\"\ \/\>,g > /dev/null

        #change the database too
        su postgres -c "psql -d fusionpbx -c \"UPDATE v_vars SET var_value = '$wanip' WHERE var_name = 'external_rtp_ip';\"" > /dev/null
        su postgres -c "psql -d fusionpbx -c \"UPDATE v_vars SET var_value = '$wanip' WHERE var_name = 'external_sip_ip';\"" > /dev/null

        #reload FS
        /usr/bin/fs_cli -x 'sofia profile external rescan reloadxml' > /dev/null
        /usr/bin/fs_cli -x 'sofia profile internal rescan reloadxml' > /dev/null

        #check that the IP is there
        /usr/bin/fs_cli -x 'sofia status profile external' | grep Ext-RTP-IP | grep $wanip > /dev/null
        ext_rtp_status=$?
        /usr/bin/fs_cli -x 'sofia status profile external' | grep Ext-SIP-IP | grep $wanip > /dev/null
        ext_sip_status=$?
        /usr/bin/fs_cli -x 'sofia status profile internal' | grep Ext-RTP-IP | grep $wanip > /dev/null
        int_rtp_status=$?
        /usr/bin/fs_cli -x 'sofia status profile internal' | grep Ext-SIP-IP | grep $wanip > /dev/null
        int_sip_status=$?

        let CheckStatus=$ext_rtp_status+$ext_sip_status+$int_rtp_status+$int_sip_status
        #echo "check-status=$CheckStatus"

        if [ $CheckStatus -eq 0 ]; then
                #wanip & FS updated correctly
                logger -s "[fix_fs_ext_ip] SUCCESS: External & Internal Profiles: Ext-RTP|SIP-IP=$wanip"
        else
                logger -s "[fix_fs_ext_ip] FAILURE: something went awry when we tried to change $wanip. you should check out why."
        fi

fi