TTB v2.05

#!/bin/sh
#
# v1.00 Shibby 2013
# v1.01 Fix memory leak + cosmetics - pedro 2019
# v2.05 [Command line operation, custom URL, local storage] + GUI integration added - rs232 2019

PID=$$
LOCK="/tmp/ttb.lock"
DIR="/www/ext"
LOGS="logger -s -t TTB[$PID]"
SUBDIR="TomatoThemeBase"
URL_ORIG="http://www.tomatothemebase.eu/wp-content/uploads"


ttbexit() {
        rm $LOCK >/dev/null 2>&1
        exit $1
}

ttbdownload() {
        ls -l /www/ext/ | grep "\->" | cut -d" " -f 27 | while read file; do
                rm $DIR/$file  >/dev/null 2>&1
        done
        rm $DIR2/*  >/dev/null 2>&1
        wget -T 10 -t 1 $URL/$TTB.zip -O $DIR2/$TTB.zip >/dev/null 2>&1
        sleep 1
        [ -f $DIR2/$TTB.zip ] && {
                cru d ttbDL
        } || {
                cru a ttbDL "*/2 * * * * /usr/sbin/ttb"
                $LOGS "ERROR - Cannot download Online theme. Will try again soon..."
                ttbexit 1
        }
}

ttbextract() {
        rm $DIR/*.css $DIR/*.zip $DIR/*.png $DIR/*.gif $DIR/*.jpg  >/dev/null 2>&1
        unzip -o $DIR2/$TTB.zip -d $DIR2/ >/dev/null 2>&1
        ls -1 $DIR2 | grep -v .zip | grep -v .list |
        (
        while read line; do
                ln -s $DIR2/$line $DIR/$line
        done
        )
        $LOGS "INFO - The theme [ $TTB ] has been successfully applied"
}

# check if another script in action
[ -f $LOCK ] && {
        $LOGS "WARNING - Another process in action - exiting"
        exit 1
}

# check if set to online
[ ! "$(nvram get web_css)" == "online" ] && {
        $LOGS "WARNING - The NVRAM variable [ web_css ] was not set to [ online ] - exiting"
        exit 1
}

[ -z "$(nvram get ttb_url)" ] && {
        URL="$URL_ORIG"
        nvram set ttb_url="$URL_ORIG"
        nvram commit
} || {
        URL=$(echo $(nvram get ttb_url) | sed 's/\/$//')
}

if [ -n "$2" ]; then
        DIR2=$(echo $2 | sed 's/\/$//')
        DIR2=$DIR2/$SUBDIR
        nvram set ttb_loc="$2"
        nvram commit
elif [ ! -n "$(nvram get ttb_loc)" ]; then
        $LOGS "INFO - The NVRAM variable ttb_loc not set. I don't know where to save the theme will keep it in RAM"
        DIR2="/tmp/$SUBDIR"
else
        DIR2=$(echo $(nvram get ttb_loc) | sed 's/\/$//')
        DIR2=$DIR2/$SUBDIR
fi

[ -d $DIR2 ] || mkdir $DIR2
touch $LOCK

[ -n "$1" ] && {
        if [ $1 == "help" ]; then
                echo "

NOTE: This is to be used for troubleshooting, always prefer the tomato GUI whenever possible.

        TTB 2.05 - usage

ttb     <no parameter>          - execute TTB based on NVRAM settings
        help                    - Shows this info
        list                    - Display list of available themes, this uses a themes.txt from the defined URL.
        <theme name>            - Download, sets the theme name and sets NVRAM variables
        <theme name> <folder>   - Download, sets the theme name, stores locally and sets NVRAM variables

"
                ttbexit 0
        elif [ $1 == "list" ]; then
                wget -q -O - $URL/themes.txt | more
                ttbexit 0
        else
                TTB=$1
                nvram set ttb_css="$1"
                nvram commit
        fi
} || {
        TTB=$(nvram get ttb_css)
        [ -z $TTB ] && {
                $LOGS "ERROR - Using TTB but the ttb_css nvram variable meant to cointating the theme name is empty - exiting"
                ttbexit 1
        }
}

[ -f $DIR2/$TTB.css ] && {
        $LOGS "INFO - Installing theme [ $TTB ] from the local storage [ $DIR2 ]"
        ttbextract $DIR2
} || {
        [ $URL != $URL_ORIG ] && {
                SOURCE="custom url [ $URL ]"
        } || {
                SOURCE="original TTB site"
        }
        $LOGS "INFO - Downloading theme [ $TTB ] from $SOURCE and storing it locally in [ $DIR2 ]"
        ttbdownload $DIR2
        ttbextract $DIR2
}

ttbexit 0