Refresh /WWW

#!/bin/sh
VER="v01.05"
#======================================================================================================= © 2016-2017 Martineau, v01.05
#
# Refresh custom /www i.e. adding custom TAB (such as Kvic's NTP Daemon) to say Tools Menu in the GUI
#
#   Each time a NEW firmware is installed, then this script should be run (in case there are any undisclosed GUI tweaks by ASUS or RMerlin! ;-)
#
#   NOTE: In say '/jffs/scripts/post-mount' you could automate the process.
#

# e.g. /jffs/scripts/post-mount
#
# Check if the firmware has changed, if so, we need to refresh '/www' just in case there are any subtle (undisclosed) tweaks by Asus or RMerlin!
# FIRMWARE=$(nvram get buildno | awk 'BEGIN { FS = "." } {print $1$2}')
# if [ -f "/tmp/mnt/$MYROUTER/Firmware_ver.txt" ];then
#    FIRMWARE_PREV=$(cat /tmp/mnt/$MYROUTER/Firmware_ver.txt)
# else
#    FIRMWARE_PREV="N/A"
# fi
#
# if [ "$FIRMWARE" !=  "$FIRMWARE_PREV" ];then
#   logger -st "($(basename $0))" $$ "Firmware v'"$FIRMWARE"' changed from previous v'"$FIRMWARE_PREV"'; requesting 'RefreshWWW.sh'....."
#   /jffs/scripts/RefreshWWW.sh
#   echo $FIRMWARE >/tmp/mnt/$MYROUTER/Firmware_ver.txt                     # Update/create the Firmware tracking file on USB
# else
#   logger -st "($(basename $0))" $$ "Mounting '/www'
#   'NTP Daemon' on Tools TAB"
#   mount -a                    # NTP Daemon - mounts /opt/var/www to /www (see cp /jffs/configs/fstab /etc)
#   service restart_httpd       # NTP Daemon new tab added to tools page ? etc.
# fi

# Print between line beginning with'#==' to first blank line inclusive
ShowHelp() {
    awk '/^#==/{f=1} f{print; if (!NF) exit}' $0
}
ANSIColours () {

    cRESET="\e[0m";cBLA="\e[30m";cRED="\e[31m";cGRE="\e[32m";cYEL="\e[33m";cBLU="\e[34m";cMAG="\e[35m";cCYA="\e[36m";cGRA="\e[37m"
    cBGRA="\e[90m";cBRED="\e[91m";cBGRE="\e[92m";cBYEL="\e[93m";cBBLU="\e[94m";cBMAG="\e[95m";cBCYA="\e[96m";cBWHT="\e[97m"
    aBOLD="\e[1m";aDIM="\e[2m";aUNDER="\e[4m";aBLINK="\e[5m";aREVERSE="\e[7m"
    cRED_="\e[41m";cGRE_="\e[42m"

}

#  For >380.68 customisiation has now changed:
#       /www/require/modules/menuTree.js


#==============================================Main==================================================================================

ANSIColours

if [ "$1" = "-h" ] || [ "$1" = "help" ]; then
    echo -en $cBWHT
   ShowHelp                                 # Show help
   echo -e $cRESET
   exit 0
fi

logger -st "($(basename $0))" $$ $VER "© 2016-2017 Martineau, Refresh '/www' requested....."

# Stop the active HTTPD
echo -e $cBCYA"\n\tStopping HTTPD....."$cBGRE
service stop_httpd
echo -e $cBRED
umount /www

# Ensure the old copy of /www is deleted
echo -e $cBCYA"\tErasing '/opt/var/www*   .....\n"$cBRED
rm -rf /opt/var/www
#rmdir /opt/var/www
if [ -d /opt/var/www ];then
    echo -e "\a\n"$cRED_"\t***Cannot delete directory '/opt/var/www'"$cRESET
    echo -e $cBCYA"\n\tRestarting HTTPD"$cBGRE
    service restart_httpd
    echo -e $cRESET
    exit 97
fi

# Clone HTTP to /www
echo -e $cBCYA"\tCloning '/www' to '/opt/var/www' may take upto 30 secs.....\n"$cBMAG
sleep 10

start=`date +%s`
tar cf - /www | tar -C /opt/var -xvf - 2> /dev/null
end=`date +%s`
difftime=$((end-start))
echo -e $cBYEL"\n\tCloning '/www' to '/opt/var/www' took $(($difftime % 60)) seconds\n"

# Reload /www and use it!
echo -e $cBCYA"\tMounting /www"$cBRED
mount -a

if [ -z "$(df | grep "/www")" ];then
    df
    logger -t "($(basename $0))" $$ "Warning /www not mounted?"
    echo -e $cRED_"\a\n\t**Warning /www not mounted?"$cRESET
fi



if [ -f /opt/var/spool/ntp/Tools_NtpdStats.asp ];then

    # Customise the Tools TAB
    echo -e $cBCYA"\n\tCustomising Kvic NTPD Tools TAB.....\n"$cBRED

    cp /opt/var/spool/ntp/Tools_NtpdStats.asp /www

    # v380.68 redesigned the menu structure
    FIRMWARE=`echo $(nvram get buildno) | awk 'BEGIN { FS = "." } {print $1$2}'`
    if [ $FIRMWARE -lt 38068 ];then
        FN="/www/state.js"
        sed -i 's/Other Settings");/Other Settings", "NTP Daemon");/'              $FN
        sed -i 's/therSettings.asp");/therSettings.asp", "Tools_NtpdStats.asp");/' $FN

    else
        FN="/www/require/modules/menuTree.js"
        # {
        # menuName: "Tools",
        # index: "menu_Tools",
        # tab: [
        # {url: "Tools_Sysinfo.asp", tabName: "Sysinfo"},
        # {url: "Tools_OtherSettings.asp", tabName: "Other Settings"},
        # {url: "Tools_NtpdStats.asp", tabName: "NTP Daemon"},                      <<== insert this line
        # {url: "NULL", tabName: "__INHERIT__"}
        # ]
        # },
        sed -i '/"Tools_OtherSettings.asp", tabName: "Other Settings"/a {url: "Tools_NtpdStats.asp", tabName: "NTP Daemon"},' $FN
    fi
        logger -t "($(basename $0))" $$ "NTP Daemon TAB added '"$FN"'....."
        echo -e $cBMAG"\t\tNTP Daemon TAB added '"$FN"'.....\n"$cBRED
else
    logger -t "($(basename $0))" $$ "Refresh skipped - Kvic mod '/opt/var/spool/ntp/Tools_NtpdStats.asp' not found?"
    echo -e $cRED_"\n\tRefresh skipped - Kvic mod '/opt/var/spool/ntp/Tools_NtpdStats.asp' not found?"$cRESET
    umount /www
fi

echo -e $cBCYA"\n\tRestarting HTTPD"$cBGRE
service restart_httpd

echo -e $cRESET

logger -st "($(basename $0))" $$ "Refresh '/www' request complete."

exit 0