#!/usr/bin/env bash
  
script_name="$(basename $(realpath $0))"
working_dir="$(dirname $(realpath $0))"

#conf_file="${working_dir}/conf/${script_name%%.*}.conf"
conf_file="${working_dir}/conf/jitsi.conf"

LOCK_DIR="/tmp/$(basename $0).$$.LOCK"
log_file="${LOCK_DIR}/${script_name%%.*}.log"


# ----------
# Base Function(s)
# ----------

clean_up() {

   # Perform program exit housekeeping
   rm -rf "$LOCK_DIR"
   blank_line
   exit $1
}

echononl(){
   if $terminal ; then
      echo X\\c > /tmp/shprompt$$
      if [ `wc -c /tmp/shprompt$$ | awk '{print $1}'` -eq 1 ]; then
         echo -e -n "   $*\\c" 1>&2
      else
         echo -e -n "   $*" 1>&2
      fi
      rm /tmp/shprompt$$
   fi
}
fatal(){
   echo ""
   if $terminal ; then
      echo -e "   [ \033[31m\033[1mFatal\033[m ] $*"
   else
      echo -e "   [ Fatal ] $*"
   fi
   echo ""
   if $terminal ; then
      echo -e "             \033[1mScript terminated\033[m.."
   else
      echo -e "             Script terminated.."
   fi
   echo ""
   rm -rf $LOCK_DIR
   exit 1
}
error (){
   echo ""
   if $terminal ; then
      echo -e "   [ \033[31m\033[1mError\033[m ] $*"
   else
      echo "   [ Error ] $*"
   fi
   echo ""
}

warn (){
   echo ""
   if $terminal ; then
      echo -e "   [ \033[33m\033[1mWarning\033[m ] $*"
   else
      echo "   [ Error ] $*"
   fi
   echo ""
}

info (){
   if $terminal ; then
      echo ""
      if $terminal ; then
         echo -e "   [ \033[32m\033[1mInfo\033[m ]  $*"
      else
         echo "   [ Info ]  $*"
      fi
      echo ""
   fi
}

echo_ok() {
   if $terminal ; then
      echo -e "\033[85G[ \033[32mok\033[m ]"
   fi
}
echo_done() {
   if $terminal ; then
      echo -e "\033[85G[ \033[32mdone\033[m ]"
   fi
}
echo_failed(){
   if $terminal ; then
      echo -e "\033[85G[ \033[1;31mfailed\033[m ]"
   fi
}
echo_skipped() {
   if $terminal ; then
      echo -e "\033[85G[ \033[33m\033[1mskipped\033[m ]"
   fi
}
echo_wait(){
   if $terminal ; then
      echo -en "\033[85G[ \033[5m\033[1m..\033[m ]"
   fi
}

trim() {
    local var="$*"
    var="${var#"${var%%[![:space:]]*}"}"   # remove leading whitespace characters
    var="${var%"${var##*[![:space:]]}"}"   # remove trailing whitespace characters
    echo -n "$var"
}

blank_line() {
   if $terminal ; then
      echo ""
   fi
}

detect_os () {

   if $(which lsb_release > /dev/null 2>&1) ; then

      DIST="$(lsb_release -i | awk '{print tolower($3)}')"
      DIST_VERSION="$(lsb_release -r | awk '{print tolower($2)}')"
      DIST_CODENAME="$(lsb_release -c | awk '{print tolower($2)}')"

      if [[ "$DIST" = "debian" ]]; then
         if $(echo "$DIST_VERSION" | grep -q '\.') ; then
            DIST_VERSION=$(echo "$DIST_VERSION" | cut --delimiter='.' -f1)
         fi
      fi

   elif [[ -e "/etc/os-release" ]]; then

      . /etc/os-release

      DIST=$ID
      DIST_VERSION=${VERSION_ID}

   fi

   # remove whitespace from DIST and DIST_VERSION
   DIST="${DIST// /}"
   DIST_VERSION="${DIST_VERSION// /}"

}



# ----------
# - Jobhandling
# ----------

# - Run 'clean_up' for signals SIGHUP SIGINT SIGTERM
# -
trap clean_up SIGHUP SIGINT SIGTERM

# - Create lock directory '$LOCK_DIR"
#
mkdir "$LOCK_DIR"


# ----------
# - Some checks ..
# ----------

# - Running in a terminal?
# -
if [[ -t 1 ]] ; then
   terminal=true
else
   fatal "Script must run in a terminal."
fi


# ==========
# - Begin Main Script
# ==========

# ----------
# - Headline
# ----------

if $terminal ; then
   echo ""
   echo -e "\033[1m----------\033[m"
   echo -e "\033[32m\033[1mRunning script \033[m\033[1m$script_name\033[32m .. \033[m"
   echo -e "\033[1m----------\033[m"
fi


# ----------
#  Read Configurations from $conf_file
# ----------


# - Give your default values here
# -
DEFAULT_FQHN_HOSTNAME="$(hostname -f)"

if [[ -f "$conf_file" ]]; then
   source "$conf_file"
else
   warn "No configuration file '$conf_file' present.\n
             Loading default values.."
fi

[[ -n "$FQHN_HOSTNAME" ]] && DEFAULT_FQHN_HOSTNAME="$FQHN_HOSTNAME"


blank_line
echononl "Detect distribution/release of running OS.."
detect_os > "$log_file" 2>&1
if [[ $? -ne 0 ]]; then
	echo_failed
	error "$(cat "$log_file")"
else
	echo_ok
fi


FQHN_HOSTNAME=
echo ""
echo -e "\033[32m--\033[m"
echo ""
echo "Insert full qualified hostname for Jitsi-Meet Service"
echo ""
if [[ -n "$DEFAULT_FQHN_HOSTNAME" ]]; then
   while [[ "X${FQHN_HOSTNAME}" = "X" ]]; do
      echononl "Full qualified hostname [${DEFAULT_FQHN_HOSTNAME}]: "
      read FQHN_HOSTNAME
      if [[ "X${FQHN_HOSTNAME}" = "X" ]]; then
         FQHN_HOSTNAME=$DEFAULT_FQHN_HOSTNAME
      fi
      if [[ ! $FQHN_HOSTNAME =~ \. ]]; then
         echo -e "\n\tGiven Host \033[33m\033[1m$FQHN_HOSTNAME\033[m seems not to be a full qualified hostname.\n"
         FQHN_HOSTNAME=""
      fi
   done
else
   while [[ "X${FQHN_HOSTNAME}" = "X" ]]; do
      echononl "Full qualified hostname: "
      read FQHN_HOSTNAME
      if [[ "X${FQHN_HOSTNAME}" = "X" ]]; then
         echo -e "\n\t\033[33m\033[1mFull qualified hostname is reqired\033[m\n"
      fi
      if [[ ! $FQHN_HOSTNAME =~ \. ]]; then
         echo -e "\n\tGiven Host \033[33m\033[1m$FQHN_HOSTNAME\033[m seems not to be a full qualified hostname.\n"
         FQHN_HOSTNAME=""
      fi
   done
fi
HOSTNAME="${FQHN_HOSTNAME%%.*}"

echo ""
echo ""
echo -e "\t\033[32mStart post-install script for Jitsi-Meet Service with the following parameters\033[m"
echo ""
echo -e "\tFull qualified Hostname..: $FQHN_HOSTNAME"
echo -e "\tHostname.................: $HOSTNAME"
echo ""
echo -e "\tOS Distribution..........: $DIST"
echo -e "\tDistribution's codename..: $DIST_CODENAME"
echo ""
echononl "einverstanden (yes/no): "
read OK
OK=${OK,,}
while [ "X$OK" != "Xyes" -a "X$OK" != "Xno" ]; do
   echononl "Wrong entry! [yes/no]: "
   read OK
   OK=${OK,,}
done
[ $OK = "yes" ] || fatal Repeat with other settings..

echo ""
echo ""


echo
echo -e "\033[37m\033[1mInstall script checking if certificate/key of coTURN service is up-to-date..\033[m"
echo


# ------
# Create configuration file for certification check of coTURN service
# ------

echononl "Create configuration file for certification check of coTURN service.."
if [[ ! -f "/root/bin/monitoring/conf/check_cert_for_service.conf" ]]; then
   cp /root/bin/monitoring/conf/check_cert_for_service.conf.sample \
      /root/bin/monitoring/conf/check_cert_for_service.conf > "$log_file" 2>&1
   if [[ $? -ne 0 ]]; then
      echo_failed
      error "$(cat "$log_file")"
   else
      echo_ok
   fi
else
   echo_skipped
fi


echononl "Prepare configuration file for 'service_name'.."
if ! $(grep -q -E "^\s*service_name=\"coTURN\"" /root/bin/monitoring/conf/check_cert_for_service.conf 2> /dev/null) ; then
   perl -i -n -p -e "s/^(#service_name.*)/#\1\nservice_name=\"coTURN\"/" \
      /root/bin/monitoring/conf/check_cert_for_service.conf > "$log_file" 2>&1
   if [[ $? -ne 0 ]]; then
      echo_failed
      error "$(cat "$log_file")"
   else
      echo_ok
   fi
else
   echo_skipped
fi


echononl "Prepare configuration file for 'check_string_ps'.."
if ! $(grep -q -E "^\s*check_string_ps=\"\[\[:digit:\]\]\\\ /usr/bin/turnserver\"" \
       /root/bin/monitoring/conf/check_cert_for_service.conf 2> /dev/null) ; then
   perl -i -n -p -e "s/^(#+check_string_ps*)/#\1\ncheck_string_ps=\"[[:digit:]]\\\ \/usr\/bin\/turnserver\"/" \
      /root/bin/monitoring/conf/check_cert_for_service.conf > "$log_file" 2>&1
   if [[ $? -ne 0 ]]; then
      echo_failed
      error "$(cat "$log_file")"
   else
      echo_ok
   fi
else
   echo_skipped
fi

echononl "Prepare configuration file for 'service_user'.."
if ! $(grep -q -E "^\s*service_user=\"turnserver\"" \
       /root/bin/monitoring/conf/check_cert_for_service.conf 2> /dev/null) ; then
   perl -i -n -p -e "s/^(#+service_user.*)/#\1\nservice_user=\"turnserver\"/" \
      /root/bin/monitoring/conf/check_cert_for_service.conf > "$log_file" 2>&1
   if [[ $? -ne 0 ]]; then
      echo_failed
      error "$(cat "$log_file")"
   else
      echo_ok
   fi
else
   echo_skipped
fi


echononl "Prepare configuration file for 'service_group'.."
if ! $(grep -q -E "^\s*service_group=\"turnserver\"" \
       /root/bin/monitoring/conf/check_cert_for_service.conf 2> /dev/null) ; then
   perl -i -n -p -e "s/^(#+service_group.*)/#\1\nservice_group=\"turnserver\"/" \
      /root/bin/monitoring/conf/check_cert_for_service.conf > "$log_file" 2>&1
   if [[ $? -ne 0 ]]; then
      echo_failed
      error "$(cat "$log_file")"
   else
      echo_ok
   fi
else
   echo_skipped
fi


echononl "Prepare configuration file for 'cert_installed'.."
#
if ! $(grep -q -E "^\s*cert_installed=\"/etc/ssl/fullchain.pem\"" \
       /root/bin/monitoring/conf/check_cert_for_service.conf 2> /dev/null) ; then
   perl -i -n -p -e "s/^(#+cert_installed.*)/#\1\ncert_installed=\"\/etc\/ssl\/fullchain.pem\"/" \
      /root/bin/monitoring/conf/check_cert_for_service.conf > "$log_file" 2>&1
   if [[ $? -ne 0 ]]; then
      echo_failed
      error "$(cat "$log_file")"
   else
      echo_ok
   fi
else
   echo_skipped
fi


echononl "Prepare configuration file for 'key_installed'.."
#
if ! $(grep -q -E "^\s*key_installed=\"/etc/ssl/privkey.pem\"" \
       /root/bin/monitoring/conf/check_cert_for_service.conf 2> /dev/null) ; then
   perl -i -n -p -e "s/^(#+key_installed.*)/#\1\nkey_installed=\"\/etc\/ssl\/privkey.pem\"/" \
      /root/bin/monitoring/conf/check_cert_for_service.conf > "$log_file" 2>&1
   if [[ $? -ne 0 ]]; then
      echo_failed
      error "$(cat "$log_file")"
   else
      echo_ok
   fi
else
   echo_skipped
fi

echononl "Prepare configuration file for 'cert_newest'.."
#
if ! $(grep -q -E "^\s*cert_newest=\"/var/lib/dehydrated/certs/${FQHN_HOSTNAME}/fullchain.pem\"" \
       /root/bin/monitoring/conf/check_cert_for_service.conf 2> /dev/null) ; then
   perl -i -n -p -e \
      "s/^(#+cert_newest.*)/#\1\ncert_newest=\"\\/var\/lib\/dehydrated\/certs\/${FQHN_HOSTNAME}\/fullchain.pem\"/" \
      /root/bin/monitoring/conf/check_cert_for_service.conf > "$log_file" 2>&1
   if [[ $? -ne 0 ]]; then
      echo_failed
      error "$(cat "$log_file")"
   else
      echo_ok
   fi
else
   echo_skipped
fi

echononl "Prepare configuration file for 'key_newest'.."
#
if ! $(grep -q -E "^\s*key_newest=\"/var/lib/dehydrated/certs/${FQHN_HOSTNAME}/privkey.pem\"" \
       /root/bin/monitoring/conf/check_cert_for_service.conf 2> /dev/null) ; then
   perl -i -n -p -e \
      "s/^(#+key_newest.*)/#\1\nkey_newest=\"\\/var\/lib\/dehydrated\/certs\/${FQHN_HOSTNAME}\/privkey.pem\"/" \
      /root/bin/monitoring/conf/check_cert_for_service.conf > "$log_file" 2>&1
   if [[ $? -ne 0 ]]; then
      echo_failed
      error "$(cat "$log_file")"
   else
      echo_ok
   fi
else
   echo_skipped
fi

blank_line

echononl "Initial run of script 'check_cert_for_service.sh'.."
echo_wait
/root/bin/monitoring//check_cert_for_service.sh  > "$log_file" 2>&1
if [[ $? -ne 0 ]]; then
   echo_failed
   error "$(cat "$log_file")"
else
   echo_ok
   if [[ -s "$log_file" ]] ; then
      echo -e  "
\033[32m----------\033[m
\033[1mOutput from :run of script 'check_cert_for_service.sh' was:\033[m

$(cat "$log_file")
\033[32m----------\033[m
"
   fi
fi

blank_line

# Add Cronjob for checcking if certificate/key of coTURN service is up to date
#
_failed=false
echononl "Add Cronjob for checcking if certificate/key of coTURN service is up-to-date.."
_crontab_tmp_file=/tmp/crontab_root.$$
crontab -l > "$_crontab_tmp_file" 2> "$log_file"
if [[ $? -ne 0 ]]; then
   _failed=true
fi

if ! $(grep -q "/root/bin/monitoring/check_cert_for_service.sh" "$_crontab_tmp_file" 2>/dev/null) ; then
   cat <<EOF >> "$_crontab_tmp_file" 2>> "$log_file"

# - Check if cert for coTURN service is up-to-date
# -
39 05 * * * /root/bin/monitoring/check_cert_for_service.sh
EOF
   if [[ $? -ne 0 ]]; then
      _failed=true
   fi
   crontab "$_crontab_tmp_file"
   if [[ $? -ne 0 ]]; then
      _failed=true
   fi
   rm -f "$_crontab_tmp_file"
   if [[ $? -ne 0 ]]; then
      _failed=true
   fi

   if $_failed ; then
      echo_failed
      error "$(cat "$log_file")"
   else
      echo_ok
   fi

else
   echo_skipped
fi

blank_line

echo
echo -e "\033[37m\033[1mInstall script checking if certificate/key of Prosody service is up-to-date..\033[m"
echo

# ------
# Create configuration file for certification check of Prosody service
# ------

echononl "Create configuration file for certification check of Prosody service.."
if [[ ! -f "/root/bin/monitoring/conf/check_cert_for_prosody.conf" ]]; then
   cp /root/bin/monitoring/conf/check_cert_for_prosody.conf.sample \
      /root/bin/monitoring/conf/check_cert_for_prosody.conf > "$log_file" 2>&1
   if [[ $? -ne 0 ]]; then
      echo_failed
      error "$(cat "$log_file")"
   else
      echo_ok
   fi
else
   echo_skipped
fi


echononl "Prepare configuration file for 'service_name'.."
if ! $(grep -q -E "^\s*service_domain=\"${FQHN_HOSTNAME}\"" /root/bin/monitoring/conf/check_cert_for_prosody.conf 2> /dev/null) ; then
   perl -i -n -p -e "s/^(#service_domain.*)/#\1\nservice_domain=\"${FQHN_HOSTNAME}\"/" \
      /root/bin/monitoring/conf/check_cert_for_prosody.conf > "$log_file" 2>&1
   if [[ $? -ne 0 ]]; then
      echo_failed
      error "$(cat "$log_file")"
   else
      echo_ok
   fi
else
   echo_skipped
fi

if ! $(grep -q -E "^\s*service_name=\"Prosody\"" /root/bin/monitoring/conf/check_cert_for_prosody.conf 2> /dev/null) ; then
   perl -i -n -p -e "s/^(#+service_name.*)/#\1\nservice_name=\"Prosody\"/" \
      /root/bin/monitoring/conf/check_cert_for_prosody.conf > "$log_file" 2>&1
   if [[ $? -ne 0 ]]; then
      echo_failed
      error "$(cat "$log_file")"
   else
      echo_ok
   fi
else
   echo_skipped
fi

echononl "Prepare configuration file for 'check_string_ps'.."
if ! $(grep -q -E "^\s*check_string_ps=\"\[\[:digit:\]\]\\\ lua\[\[:digit:\]\].\[\[:digit:\]\] /usr/bin/prosody\"" \
       /root/bin/monitoring/conf/check_cert_for_prosody.conf 2> /dev/null) ; then
   perl -i -n -p -e "s/^(#+check_string_ps.*)/#\1\ncheck_string_ps=\"[[:digit:]]\\\ lua[[:digit:]].[[:digit:]] \/usr\/bin\/prosody\"/" \
      /root/bin/monitoring/conf/check_cert_for_prosody.conf > "$log_file" 2>&1
   if [[ $? -ne 0 ]]; then
      echo_failed
      error "$(cat "$log_file")"
   else
      echo_ok
   fi
else
   echo_skipped
fi

echononl "Prepare configuration file for 'service_user'.."
if ! $(grep -q -E "^\s*service_user=\"prosody\"" \
       /root/bin/monitoring/conf/check_cert_for_prosody.conf 2> /dev/null) ; then
   perl -i -n -p -e "s/^(#+service_user.*)/#\1\nservice_user=\"prosody\"/" \
      /root/bin/monitoring/conf/check_cert_for_prosody.conf > "$log_file" 2>&1
   if [[ $? -ne 0 ]]; then
      echo_failed
      error "$(cat "$log_file")"
   else
      echo_ok
   fi
else
   echo_skipped
fi

echononl "Prepare configuration file for 'service_group'.."
if ! $(grep -q -E "^\s*service_group=\"prosody\"" \
       /root/bin/monitoring/conf/check_cert_for_prosody.conf 2> /dev/null) ; then
   perl -i -n -p -e "s/^(#+service_group.*)/#\1\nservice_group=\"prosody\"/" \
      /root/bin/monitoring/conf/check_cert_for_prosody.conf > "$log_file" 2>&1
   if [[ $? -ne 0 ]]; then
      echo_failed
      error "$(cat "$log_file")"
   else
      echo_ok
   fi
else
   echo_skipped
fi

echononl "Prepare configuration file for 'cert_installed'.."
if ! $(grep -q -E "^\s*cert_installed=\"/etc/prosody/certs/${FQHN_HOSTNAME}.crt\"" \
       /root/bin/monitoring/conf/check_cert_for_prosody.conf 2> /dev/null) ; then
   perl -i -n -p -e "s/^(#+cert_installed.*)/#\1\ncert_installed=\"\/etc\/prosody\/certs\/${FQHN_HOSTNAME}.crt\"/" \
      /root/bin/monitoring/conf/check_cert_for_prosody.conf > "$log_file" 2>&1
   if [[ $? -ne 0 ]]; then
      echo_failed
      error "$(cat "$log_file")"
   else
      echo_ok
   fi
else
   echo_skipped
fi

echononl "Prepare configuration file for 'key_installed'.."
if ! $(grep -q -E "^\s*key_installed=\"/etc/prosody/certs/${FQHN_HOSTNAME}.key\"" \
       /root/bin/monitoring/conf/check_cert_for_prosody.conf 2> /dev/null) ; then
   perl -i -n -p -e "s/^(#+key_installed.*)/#\1\nkey_installed=\"\/etc\/prosody\/certs\/${FQHN_HOSTNAME}.key\"/" \
      /root/bin/monitoring/conf/check_cert_for_prosody.conf > "$log_file" 2>&1
   if [[ $? -ne 0 ]]; then
      echo_failed
      error "$(cat "$log_file")"
   else
      echo_ok
   fi
else
   echo_skipped
fi

echononl "Prepare configuration file for 'cert_newest'.."
if ! $(grep -q -E "^\s*cert_newest=\"/var/lib/dehydrated/certs/${FQHN_HOSTNAME}/fullchain.pem\"" \
       /root/bin/monitoring/conf/check_cert_for_prosody.conf 2> /dev/null) ; then
   perl -i -n -p -e \
      "s/^(#+cert_newest.*)/#\1\ncert_newest=\"\\/var\/lib\/dehydrated\/certs\/${FQHN_HOSTNAME}\/fullchain.pem\"/" \
      /root/bin/monitoring/conf/check_cert_for_prosody.conf > "$log_file" 2>&1
   if [[ $? -ne 0 ]]; then
      echo_failed
      error "$(cat "$log_file")"
   else
      echo_ok
   fi
else
   echo_skipped
fi

echononl "Prepare configuration file for 'key_newest'.."
if ! $(grep -q -E "^\s*key_newest=\"/var/lib/dehydrated/certs/${FQHN_HOSTNAME}/privkey.pem\"" \
       /root/bin/monitoring/conf/check_cert_for_prosody.conf 2> /dev/null) ; then
   perl -i -n -p -e \
      "s/^(#+key_newest.*)/#\1\nkey_newest=\"\\/var\/lib\/dehydrated\/certs\/${FQHN_HOSTNAME}\/privkey.pem\"/" \
      /root/bin/monitoring/conf/check_cert_for_prosody.conf > "$log_file" 2>&1
   if [[ $? -ne 0 ]]; then
      echo_failed
      error "$(cat "$log_file")"
   else
      echo_ok
   fi
else
   echo_skipped
fi

blank_line

echononl "Initial run of script 'check_cert_for_prosody.sh'.."
echo_wait
/root/bin/monitoring/check_cert_for_prosody.sh  > "$log_file" 2>&1
if [[ $? -ne 0 ]]; then
   echo_failed
   error "$(cat "$log_file")"
else
   echo_ok
   if [[ -s "$log_file" ]] ; then
      echo -e  "
\033[32m----------\033[m
\033[1mOutput from :run of script 'check_cert_for_prosody.sh' was:\033[m

$(cat "$log_file")
\033[32m----------\033[m
"
   fi
fi

blank_line

# Add Cronjob for checcking if certificate/key of Prosody service is up to date
#
_failed=false
echononl "Add Cronjob for checcking if certificate/key of Prosody service is up-to-date.."
_crontab_tmp_file=/tmp/crontab_root.$$
crontab -l > "$_crontab_tmp_file" 2> "$log_file"
if [[ $? -ne 0 ]]; then
   _failed=true
fi

if ! $(grep -q "/root/bin/monitoring/check_cert_for_prosody.sh" "$_crontab_tmp_file" 2>/dev/null) ; then
   cat <<EOF >> "$_crontab_tmp_file" 2>> "$log_file"

# - Check if cert(s) for Prosody service are up-zp-date
# -
13 05 * * * /root/bin/monitoring/check_cert_for_prosody.sh
EOF
   if [[ $? -ne 0 ]]; then
      _failed=true
   fi
   crontab "$_crontab_tmp_file"
   if [[ $? -ne 0 ]]; then
      _failed=true
   fi
   rm -f "$_crontab_tmp_file"
   if [[ $? -ne 0 ]]; then
      _failed=true
   fi

   if $_failed ; then
      echo_failed
      error "$(cat "$log_file")"
   else
      echo_ok
   fi

else
   echo_skipped
fi


blank_line

echo
echo -e "\033[37m\033[1mConfigure Jitsi Meet..\033[m"
echo

_failed=false
_changed=false
echononl "Adjust '/etc/jitsi/videobridge/sip-communicator.properties'.."
if ! $(grep -q -E "^\s*org.jitsi.videobridge.DISABLE_TCP_HARVESTER=true" \
       /etc/jitsi/videobridge/sip-communicator.properties 2> "$log_file") ; then
cat <<EOF >> /etc/jitsi/videobridge/sip-communicator.properties

# disable the built-in webserver (required)
org.jitsi.videobridge.DISABLE_TCP_HARVESTER=true
EOF
   if [[ $? -ne 0 ]]; then
      _failed=true
   fi
   _changed=true
fi
   

if ! $(grep -q -E "^\s*org.jitsi.videobridge.TCP_HARVESTER_PORT=4443" \
       /etc/jitsi/videobridge/sip-communicator.properties 2> "$log_file") ; then
cat <<EOF >> /etc/jitsi/videobridge/sip-communicator.properties
# sometimes the above setting does not work, therefore we change the port too (required)
org.jitsi.videobridge.TCP_HARVESTER_PORT=4443
# sometimes the above setting does not work, therefore we change the port too (required)
org.jitsi.videobridge.TCP_HARVESTER_MAPPED_PORT=443
EOF
   if [[ $? -ne 0 ]]; then
      _failed=true
   fi
   _changed=true
fi

if ! $(grep -q -E "^\s*#+org.jitsi.videobridge.ENABLE_STATISTICS=false" \
       /etc/jitsi/videobridge/sip-communicator.properties 2> "$log_file") ; then
cat <<EOF >> /etc/jitsi/videobridge/sip-communicator.properties
# disable statistics to third parties (optional)
# DOES NOT WORK
#org.jitsi.videobridge.ENABLE_STATISTICS=false
EOF
   if [[ $? -ne 0 ]]; then
      _failed=true
   fi
   _changed=true
fi

if $_changed ; then

   if $_failed; then
      echo_failed
      error "$(cat "$log_file")"
   else
      echo_ok
   fi
else
   echo_skipped
fi

echononl "Backup file '/etc/jitsi/meet/${FQHN_HOSTNAME}-config.js'.."
if [[ ! -f "/etc/jitsi/meet/${FQHN_HOSTNAME}-config.js.ORIG" ]]; then
   cp -a "/etc/jitsi/meet/${FQHN_HOSTNAME}-config.js" \
      "/etc/jitsi/meet/${FQHN_HOSTNAME}-config.js.ORIG" > "$log_file" 2>&1
   if [[ $? -ne 0 ]]; then
      echo_failed
      error "$(cat "$log_file")"
   else
      echo_ok
   fi
else
   echo_skipped
fi

#echononl "Adjust '/etc/jitsi/meet/${FQHN_HOSTNAME}-config.js'.."
#if ! $(grep -q -E "^\s*{ urls: 'stun.nextcloud.com:443' }" \
#       /etc/jitsi/meet/${FQHN_HOSTNAME}-config.js 2> "$log_file") ; then
#   perl -i -n -p -e "s/((\s*)stunServers: \[.*)/\1\n\n\2    { urls: 'stun.nextcloud.com:443' },\n\2    { urls: 'stun.stunprotocol.org:3478' },\n\2    { urls: 'stun.services.mozilla.com:3478' },/" /etc/jitsi/meet/video.faire-mobilitaet.de-config.js
#   if [[ $? -ne 0 ]]; then
#      echo_failed
#      error "$(cat "$log_file")"
#   else
#      echo_ok
#   fi
#else
#   echo_skipped
#fi

_temp_jitsi_meet_config_created=false
echononl "Adjust '/etc/jitsi/meet/${FQHN_HOSTNAME}-config.js'.."
if ! $(grep -q -E "^\s*{ urls: 'stun.nextcloud.com:443' }" \
       /etc/jitsi/meet/${FQHN_HOSTNAME}-config.js 2> "$log_file") ; then

   _found=false
   :> ${LOCK_DIR}/${FQHN_HOSTNAME}-config.js
   while IFS='' read -r _line || [[ -n $_line ]] ; do

      if $_found && echo "$_line" | grep -iq -E "^\s*// { urls:.*${FQHN_HOSTNAME}" 2> /dev/null ; then
         echo "$_line" >> ${LOCK_DIR}/${FQHN_HOSTNAME}-config.js
         cat <<EOF >> ${LOCK_DIR}/${FQHN_HOSTNAME}-config.js
            { urls: 'stun.nextcloud.com:443' },
            { urls: 'stun.stunprotocol.org:3478' },
            { urls: 'stun.services.mozilla.com:3478' },
EOF
         _found=false
      elif $_found && echo "$_line" | grep -iq -E "^\s*\]," ; then
         cat <<EOF >> ${LOCK_DIR}/${FQHN_HOSTNAME}-config.js
            { urls: 'stun.nextcloud.com:443' },
            { urls: 'stun.stunprotocol.org:3478' },
            { urls: 'stun.services.mozilla.com:3478' }
EOF
         echo "$_line" >> ${LOCK_DIR}/${FQHN_HOSTNAME}-config.js
         _found=false
      else
         echo "$_line" >> ${LOCK_DIR}/${FQHN_HOSTNAME}-config.js
      fi

      if ! $_found && echo "$_line" | grep -iq -E "^\s*stunServers: \[" 2> /dev/null ; then
         _found=true
      fi

   done < "/etc/jitsi/meet/${FQHN_HOSTNAME}-config.js"

   echo_done

   _temp_jitsi_meet_config_created=true
else
   echo_skipped
fi


echononl "Copy created file '${FQHN_HOSTNAME}-config.js' to folder '/etc/jitsi/meet/'.."
if $_temp_jitsi_meet_config_created ; then
   cp -a "${LOCK_DIR}/${FQHN_HOSTNAME}-config.js" "/etc/jitsi/meet/" > "$log_file" 2>&1
   if [[ $? -ne 0 ]]; then
      echo_failed
      error "$(cat "$log_file")"
   else
      echo_ok
   fi
else
   echo_skipped
fi

blank_line

echo
echo -e "\033[37m\033[1mConfigure Prosody (/etc/prosody/conf.avail/${FQHN_HOSTNAME}.cfg.lua) ..\033[m"
echo


# Edit file /etc/prosody/conf.d/${FQHN_HOSTNAME}.cfg.lua
#
# after line (the location this is important)
#    consider_bosh_secure = true;
#
# add the following lines:
#    bosh_ports = {
#       {
#          port = 5280;
#          path = "http-bind";
#       },
#       {
#          port = 5281;
#          path = "http-bind";
#          ssl = {
#             certificate = "/etc/prosody/certs/${FQHN_HOSTNAME}.crt";
#             key = "/etc/prosody/certs/${FQHN_HOSTNAME}.key";
#          }
#       }
#    }
#
#    http_ports = { 5280 }
#    http_interfaces = { "localhost" }
#
#    https_ports = { 5281 }
#    https_interfaces = { "localhost" }
#
#    https_ssl = {
#       certificate = "/etc/prosody/certs/${FQHN_HOSTNAME}.crt";
#       key = "/etc/prosody/certs/${FQHN_HOSTNAME}.key";
#    }
#
echononl "Backup file '/etc/prosody/conf.avail/${FQHN_HOSTNAME}.cfg.lua'.."
if [[ ! -f "/etc/prosody/conf.avail/${FQHN_HOSTNAME}.cfg.lua.ORIG" ]]; then
   cp -a "/etc/prosody/conf.avail/${FQHN_HOSTNAME}.cfg.lua" \
      "/etc/prosody/conf.avail/${FQHN_HOSTNAME}.cfg.lua.ORIG" > "$log_file" 2>&1
   if [[ $? -ne 0 ]]; then
      echo_failed
      error "$(cat "$log_file")"
   else
      echo_ok
   fi
else
   echo_skipped
fi

_found=false
_tem_prosody_config_created=false
echononl "Create temporary configuration '${FQHN_HOSTNAME}.cfg.lua'.."
if ! $(grep -q -E "^\s*bosh_ports = {" /etc/prosody//conf.avail/${FQHN_HOSTNAME}.cfg.lua 2> /dev/null) ; then 

   :> ${LOCK_DIR}/${FQHN_HOSTNAME}.cfg.lua
   while IFS='' read -r _line || [[ -n $_line ]] ; do

      echo "$_line" >> ${LOCK_DIR}/${FQHN_HOSTNAME}.cfg.lua

      if ! $_found && echo "$_line" | grep -i -E "^\s*consider_bosh_secure = true;" > /dev/null 2>&1 ; then

         _found=true

         cat <<EOF >> ${LOCK_DIR}/${FQHN_HOSTNAME}.cfg.lua 

bosh_ports = {
   {
      port = 5280;
      path = "http-bind";
   },
   {
      port = 5281;
      path = "http-bind";
      ssl = {
         certificate = "/etc/prosody/certs/${FQHN_HOSTNAME}.crt";
         key = "/etc/prosody/certs/${FQHN_HOSTNAME}.key";
      }
   }
}

http_ports = { 5280 }
http_interfaces = { "localhost" }

https_ports = { 5281 }
https_interfaces = { "localhost" }

https_ssl = {
   certificate = "/etc/prosody/certs/${FQHN_HOSTNAME}.crt";
   key = "/etc/prosody/certs/${FQHN_HOSTNAME}.key";
}
EOF
      fi

   done < "/etc/prosody/conf.avail/${FQHN_HOSTNAME}.cfg.lua"

   echo_done

   _tem_prosody_config_created=true

else
   echo_skipped
fi

echononl "Copy created file '${FQHN_HOSTNAME}.cfg.lua' to folder '/etc/prosody/conf.avail/'.."
if $_tem_prosody_config_created ; then
   cp -a "${LOCK_DIR}/${FQHN_HOSTNAME}.cfg.lua" "/etc/prosody/conf.avail/" > "$log_file" 2>&1
   if [[ $? -ne 0 ]]; then
      echo_failed
      error "$(cat "$log_file")"
   else
      echo_ok
   fi
else
   echo_skipped
fi


blank_line

echo
echo -e "\033[37m\033[1mConfigure nginx configuration ..\033[m"
echo

echononl "Backup nginx configuration '${FQHN_HOSTNAME}.conf'.."
if [[ ! -f "/etc/nginx/sites-available/${FQHN_HOSTNAME}.conf.ORIG" ]] ; then
   if [[ -f "/etc/nginx/sites-available/${FQHN_HOSTNAME}.conf" ]] ; then
      cp -a "/etc/nginx/sites-available/${FQHN_HOSTNAME}.conf" \
         "/etc/nginx/sites-available/${FQHN_HOSTNAME}.conf.ORIG" > "$log_file" 2>&1
      if [[ $? -ne 0 ]]; then
         echo_failed
         error "$(cat "$log_file")"
      else
         echo_ok
      fi
   else
      echo_skipped
   fi
else
   echo_skipped
fi

echononl "Create nginx configuration for '${FQHN_HOSTNAME}'.."
if ! $(grep -q -E "^\s*include snippets/letsencrypt-acme-challenge.conf;" \
       "/etc/nginx/sites-available/${FQHN_HOSTNAME}.conf" 2> /dev/null) ; then
   cat <<EOF > "/etc/nginx/sites-available/${FQHN_HOSTNAME}.conf" 2> "$log_file"
# - ${FQHN_HOSTNAME}

server_names_hash_bucket_size 64;

server {
    listen 80;
    listen [::]:80;
    server_name ${FQHN_HOSTNAME};

    return 301 https://\$host\$request_uri;
}

server {
    listen 443 ssl http2;
    listen [::]:443 ssl http2;
    server_name ${FQHN_HOSTNAME};

    # Include location directive for Let's Encrypt ACME Challenge
    #
    # Needed for (automated) updating certificate
    #
    include snippets/letsencrypt-acme-challenge.conf;

    # Diffie-Hellman parameter for DHE ciphersuites, recommended 2048 bits
    #
    # To generate a dhparam.pem file, run in a terminal
    #    openssl dhparam -dsaparam -out /etc/nginx/ssl/dhparam.pem 2048
    #
    ssl_dhparam /etc/nginx/ssl/dhparam.pem;

    # Mozilla Guideline v5.4, nginx 1.17.7, OpenSSL 1.1.1d, intermediate configuration
    ssl_protocols TLSv1.2 TLSv1.3;
    ssl_ciphers 'ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES128-CCM8:ECDHE-ECDSA-AES128-CC:ECDHE-ECDSA-ARIA128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES256-CCM8:ECDHE-ECDSA-AES256-CCM:ECDHE-ECDSA-ARIA256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384';
    ssl_prefer_server_ciphers off;

    # Eable session resumption to improve https performance
    ssl_session_timeout 1d;
    ssl_session_cache shared:SSL:50m;
    ssl_session_tickets off;


    # ==========
    # HTTP security Headers
    # ==========

    # HSTS (ngx_http_headers_module is required) (15768000 seconds = 6 months)
    #
    add_header Strict-Transport-Security "max-age=31536000" always;

    add_header X-Frame-Options "SAMEORIGIN" always;
    add_header X-XSS-Protection "1; mode=block" always;
    add_header X-Content-Type-Options nosniff always;

    add_header Referrer-Policy "strict-origin";

    # - Geteiltes Dokument öffnen
    #
    #      # Add Etherpad-Lite host to frame-src, so frame-src becomes:
    #      #
    #      #    #frame-src 'self' https://<etherpad-lite-host> https://www.youtube.com ;
    #      #
    #      #    i.e. etherpad-litehost = epad-01.oopen.de
    #      #
    #      frame-src 'self' https://epad-01.oopen.de https://www.youtube.com ;
    #
    #
    # - YouTube-Video teilen
    #
    #      # Add https://www.youtube.com to script-src, so script-src becomes:
    #      #
    #      script-src 'self' 'unsafe-inline' https://www.youtube.com ;
    #
    #      # Add https://www.youtube.com to frame-src, so frame-src becomes:
    #      #
    #      frame-src 'self' https://meet-ep-pee7eiji-xein9aiy.oopen.de https://www.youtube.com ;
    #
    #      # Add https://img.youtube.com to img-src, so img-src becomes:
    #      img-src 'self' https://img.youtube.com
    #
    #
    # - Hintergrundschärfe aktivieren:
    #
    #       # Add https://storage.googleapis.com to connect-src, so connect source becomes:
    #       #
    #       connect-src 'self' https://storage.googleapis.com;
    #
    #       # Add blob: to script-src, so script-src becomes:
    #       script-src 'self' 'unsafe-inline' https://www.youtube.com blob:
    #
    # Note!
    #   Other directives (like worker-src, or child-src, or..) are falling back to 'default-src'.
    #
    #add_header Content-Security-Policy "default-src 'none'; script-src 'self' 'unsafe-inline' https://www.youtube.com ; img-src 'self' https://img.youtube.com ; style-src 'self' 'unsafe-inline' ; font-src 'self'; frame-src 'self' https://epad-01.oopen.de https://www.youtube.com ; object-src 'none'; frame-ancestors 'none'; form-action 'self'; base-uri 'self'; connect-src 'self' https://storage.googleapis.com ; media-src 'self'";

    add_header Content-Security-Policy "block-all-mixed-content ; default-src 'none'; script-src 'self' 'unsafe-inline' https: blob: ; img-src 'self' https: ; style-src 'self' 'unsafe-inline' ; font-src 'self'; frame-src 'self' https: ; object-src 'none'; frame-ancestors 'none'; form-action 'self'; base-uri 'self'; connect-src 'self' https: ; media-src 'self'";

    add_header Permissions-Policy "geolocation=();midi=();notifications=();push=();sync-xhr=();microphone=();camera=();magnetometer=();gyroscope=();speaker=(self);vibrate=();fullscreen=(self);payment=();";


    ssl_certificate /var/lib/dehydrated/certs/${FQHN_HOSTNAME}/fullchain.pem;
    ssl_certificate_key /var/lib/dehydrated/certs/${FQHN_HOSTNAME}/privkey.pem;
    ssl_trusted_certificate /var/lib/dehydrated/certs/${FQHN_HOSTNAME}/chain.pem;

    root /usr/share/jitsi-meet;

    # ssi on with javascript for multidomain variables in config.js
    ssi on;
    ssi_types application/x-javascript application/javascript;

    index index.html index.htm;
    error_page 404 /static/404.html;

    gzip on;
    gzip_types text/plain text/css application/javascript application/json image/x-icon application/octet-stream application/wasm;
    gzip_vary on;
    gzip_proxied no-cache no-store private expired auth;
    gzip_min_length 512;

    location = /config.js {
        alias /etc/jitsi/meet/${FQHN_HOSTNAME}-config.js;
    }

    location = /external_api.js {
        alias /usr/share/jitsi-meet/libs/external_api.min.js;
    }

    #ensure all static content can always be found first
    location ~ ^/(libs|css|static|images|fonts|lang|sounds|connection_optimization|.well-known)/(.*)\$
    {
        add_header 'Access-Control-Allow-Origin' '*';
        alias /usr/share/jitsi-meet/\$1/\$2;

        # cache all versioned files
        if (\$arg_v) {
          expires 1y;
        }
    }

    # BOSH
    location = /http-bind {
        proxy_pass      http://localhost:5280/http-bind;
        proxy_set_header X-Forwarded-For \$remote_addr;
        proxy_set_header Host \$http_host;
    }

    # xmpp websockets
    location = /xmpp-websocket {
        proxy_pass http://127.0.0.1:5280/xmpp-websocket?prefix=\$prefix&\$args;
        proxy_http_version 1.1;
        proxy_set_header Upgrade \$http_upgrade;
        proxy_set_header Connection "upgrade";
        proxy_set_header Host \$http_host;
        tcp_nodelay on;
    }

    # colibri (JVB) websockets for jvb1
    location ~ ^/colibri-ws/default-id/(.*) {
       proxy_pass http://127.0.0.1:9090/colibri-ws/default-id/\$1\$is_args\$args;
       proxy_http_version 1.1;
       proxy_set_header Upgrade \$http_upgrade;
       proxy_set_header Connection "upgrade";
       tcp_nodelay on;
    }

    location ~ ^/([^/?&:'"]+)\$ {
        try_files \$uri @root_path;
    }

    location @root_path {
        rewrite ^/(.*)\$ / break;
    }

    location ~ ^/([^/?&:'"]+)/config.js\$
    {
       set \$subdomain "\$1.";
       set \$subdir "\$1/";

       alias /etc/jitsi/meet/${FQHN_HOSTNAME}-config.js;
    }

    #Anything that didn't match above, and isn't a real file, assume it's a room name and redirect to /
    location ~ ^/([^/?&:'"]+)/(.*)\$ {
        set \$subdomain "\$1.";
        set \$subdir "\$1/";
        rewrite ^/([^/?&:'"]+)/(.*)\$ /\$2;
    }

    # BOSH for subdomains
    location ~ ^/([^/?&:'"]+)/http-bind {
        set \$subdomain "\$1.";
        set \$subdir "\$1/";
        set \$prefix "\$1";

        rewrite ^/(.*)\$ /http-bind;
    }

    # websockets for subdomains
    location ~ ^/([^/?&:'"]+)/xmpp-websocket {
        set \$subdomain "\$1.";
        set \$subdir "\$1/";
        set \$prefix "\$1";

        rewrite ^/(.*)\$ /xmpp-websocket;
    }
}
EOF
   if [[ $? -ne 0 ]]; then
      echo_failed
      error "$(cat "$log_file")"
   else
      echo_ok
   fi
else
   echo_skipped
fi

echononl "Enable nginx support for '${FQHN_HOSTNAME}'.."
if [[ ! -h "/etc/nginx/sites-enabled/${FQHN_HOSTNAME}.conf" ]] ; then
   ln -s "../sites-available/${FQHN_HOSTNAME}.conf" "/etc/nginx/sites-enabled/${FQHN_HOSTNAME}.conf" > "$log_file" 2>&1
   if [[ $? -ne 0 ]]; then
      echo_failed
      error "$(cat "$log_file")"
   else
      echo_ok
   fi
else
   echo_skipped
fi



echo
echo -e "\033[37m\033[1mRestart services..\033[m"
echo

echononl "Restart prosody service.."
systemctl restart prosody > "$log_file" 2>&1
if [[ $? -ne 0 ]]; then
   echo_failed
   error "$(cat "$log_file")"
else
   echo_ok
fi

echononl "Restart jicofo service.."
systemctl restart prosody > "$log_file" 2>&1
if [[ $? -ne 0 ]]; then
   echo_failed
   error "$(cat "$log_file")"
else
   echo_ok
fi

echononl "Restart jitsi-videobridge2 service.."
systemctl restart jitsi-videobridge2 > "$log_file" 2>&1
if [[ $? -ne 0 ]]; then
   echo_failed
   error "$(cat "$log_file")"
else
   echo_ok
fi

echononl "Restart Nginx webservice.."
systemctl restart nginx > "$log_file" 2>&1
if [[ $? -ne 0 ]]; then
   echo_failed
   error "$(cat "$log_file")"
else
   echo_ok
fi

if $_tem_prosody_config_created ; then
   warn "Please check file '/etc/prosody/conf.avail/${FQHN_HOSTNAME}.cfg.lua'"
fi

clean_up 0