Download all fonts described by @font-face directive in CSS stylesheet

font-doduk.sh

#!/bin/bash
COLOR_RESET="\033[30m"
COLOR_GREEN="\033[32m"
COLOR_RED="\033[31m"
COLOR_CYAN="\033[36m"
COLOR_WHITE="\033[37m"

sniffTarget=$1
referer="--referer $2"
data=""
fonts=""

if [ $# -eq 0 ] || [ $# -gt 2 ]
then
    echo -e "${COLOR_WHITE}Usage: font-doduk CSS_URL [CSS_REFERER]"
else
    if [ -z ${referer+x} ]
    then
        referer=""
    fi

    
    data=$(curl $sniffTarget $referer 2>/dev/null )
    if [ $? -eq 0 ]
    then
        echo -e "${COLOR_GREEN}[SUCCESS]${COLOR_WHITE} Got Stylesheet!"
    else
        echo -e "${COLOR_RED}[ERROR]{COLOR_WHITE} Failed to fetch stylesheet from remote server. curl returned with exit code $?."
        exit;
    fi

    
    fonts=$(echo $data | grep -oE "@font-face[^}]+}" | grep -oE "url\(['\"]?([^'\"#]+)['\"]?\)" | grep -oE "[^'\"]{5,}")
    if [ $? -eq 0 ]
    then
        echo -e "${COLOR_GREEN}[SUCCESS]${COLOR_WHITE} Font url was parsed successfully!"
    else
        echo $data
        echo -e "${COLOR_RED}[ERROR]${COLOR_WHITE} Failed to parse font url from fetched stylesheet."
        exit;
    fi



    for font in $fonts
    do
        echo -e "${COLOR_CYAN}[INFO]${COLOR_WHITE} Downloading: $font"
        wget --referer $sniffTarget $font
        if [ $? -eq 0 ]
        then
            echo -e "${COLOR_GREEN}[SUCCESS]${COLOR_WHITE} Font downloaded successfully!"
        else
            echo "[ERROR] Font download failed..."
        fi
    done

fi