#!    Name: hexload.sh
#!  Author: kittykat
#! Version: 2024.09.13
#!    Desc: Add support for downloading and processing of urls for a new host
#!   Usage: Copy this file into the ./${ScriptDir}/hosts/ folder
#!
#!
#! ------------ REQUIRED SECTION ---------------
#! @[UPDATE] HostAndDomainRegexes: This string is loaded into mad.sh and allows dynamic handling of new url data
#! Format: '/HostCode/HostNick/HostFuncPrefix:HostDomainRegex@'
#! HostCode: <aUniqueCodeForHost> (ie. 'fh' for filehaus -- cannot be used by other hosts)
#! HostNick: What is displayed throughout MAD output (ie. 'filehaus' -- "urls.txt has 10 filehaus.."  will be displayed)
#! HostFuncPrefix: <aUniqueStringThatMustPrefixHostFunctions> (ie. 'fh' -- fh_DownloadFile(), fh_FetchFileInfo() .. )
#!   * Note: Must begin with a letter a-z (functions beginning with numbers are no bueno)
#! HostDomainRegex: The regex used to verify matching urls
HostCode='hex'
HostNick='hexload'
HostFuncPrefix='hex'
HostUrls='hexload.com, hexupload.net'
HostDomainRegex='^(http|https)://(.*\.)?(hexload\.com|hexupload\.net)'
#!
#! !! DO NOT UPDATE OR REMOVE !!
#! This merges the Required HostAndDomainRegexes into mad.sh
ListHostAndDomainRegexes=${ListHostAndDomainRegexes}'/'${HostCode}'/'${HostNick}'/'${HostFuncPrefix}'/'${HostUrls}':'${HostDomainRegex}'@'
#!
#!
#! ------------ (1) Host Main Download Function --------------- #
#!
#! @REQUIRED: Host Main Download function
#! Must be named specifically as such:
#! <HostFuncPrefix>_DownloadFile()
hex_DownloadFile() {
	local remote_url=${1}
	local file_url=${1}
    local filecnt=${2}
    warnAndRetryUnknownError=false
    exitDownloadError=false
    exitDownloadNotAvailable=false
	fileAlreadyDone=false
	hexUseDownload="download1"
	hexDownload2RetryCnt=0
	file_id=$(grep -oP '[^\/]*$' <<< "$file_url")
	download_inflight_path="${WorkDir}/.inflight/"
	mkdir -p "$download_inflight_path"
	completed_location="${WorkDir}/downloads/"
	tor_identity="${RANDOM}"
	finalAttempt="false"
	for ((z=0; z<=$MaxUrlRetries; z++)); do
	    if [[ $z -eq  $MaxUrlRetries ]] ; then
            finalAttempt="true"
	    fi  
        CLEANSTRING=${remote_url//[^a-zA-Z0-9]/}
        trap "rm -f ${WorkDir}/.flocks/${CLEANSTRING}; echo ""; tput cnorm; exit" 0 1 2 3 6 15
        if hex_FetchFileInfo $finalAttempt && check_file_extension && hex_GetFile "${filecnt}" $((z+1)) $finalAttempt ; then
            return 0
        elif [[ $z -lt $MaxUrlRetries ]]; then
            if [[ "${fileAlreadyDone}" == "true" ]] ; then
                break
            fi
            if [[ "${warnAndRetryUnknownError}" == "true" ]] ; then
                if [[ "${DebugAllEnabled}" == "true" ]] ; then
                    debugHtml "${remote_url##*/}" "error" "Retry due to an unknown issue: attempt #$((z+1)) of ${MaxUrlRetries}"
                fi
            fi
            if [[ "${exitDownloadError}" == "true" || "${exitDownloadNotAvailable}" == "true" ]] ; then
                if [[ "${DebugAllEnabled}" == "true" ]] ; then
                    debugHtml "${remote_url##*/}" "error" "Exit due to unrecoverable issue"
                fi
                rm -f "${WorkDir}/.flocks/${remote_url//[^a-zA-Z0-9]/}"
                break
            fi
            echo -e "\n${YELLOW}A recoverable error occurred, retry attempt $((z+1))/${MaxUrlRetries}${NC}"
            sleep 3
        fi
    done
    rm -f "${WorkDir}/.flocks/${remote_url//[^a-zA-Z0-9]/}"
}
#!
#! ------------- (2) Fetch File Info Function ----------------- #
#!
hex_FetchFileInfo() {
    finalAttempt=$1
    hexmaxfetchfileretries=20
    bNoNewTorIdent=false
    echo -e "${GREEN}# Fetching download url… ${NC}[.] timeout, [-] blocked ip, [*] wait time${NC}"
    local bDonePrint=true
    for ((j=1; j<=$hexmaxfetchfileretries; j++)); do
        if [[ "${bDonePrint}" == "false" ]]; then
            printf " ."
        fi
        bDonePrint=false
		CLEANSTRING=${remote_url//[^a-zA-Z0-9]/}
		trap "rm -f ${WorkDir}/.flocks/${CLEANSTRING}; echo ""; tput cnorm; exit" 0 1 2 3 6 15
        if [[ "$bNoNewTorIdent" == "true" ]]; then
            bNoNewTorIdent=false
        else
            tor_identity="${RANDOM}"
        fi
        if grep -Eq "pjscloud.sh" <<< "$LoadPlugins" && [[ "$PJSCloud_hexload" == "true" ]]; then
            if [[ "$hexUseDownload" == "download2" ]]; then
                form_data="op=download1&id=${file_id}&rand=&usr_login=&fname=&ajax=1&method_free=1&dataType=json"
                response=$(pjscloud_tor_request "https://hexload.com/download" "$form_data")
                if [[ "${DebugAllEnabled}" == "true" ]] ; then
                    debugHtml "${remote_url##*/}" "hex_dwnpage$j" "form_data: ${form_data}"$'\n'"${response}"
                fi
            else
                form_data="op=download1&id=${file_id}&rand=&usr_login=&fname=&ajax=1&method_free=1&dataType=json"
                response=$(tor_curl_request --insecure -s --data "$form_data" "https://hexload.com/download")
                if [[ "${DebugAllEnabled}" == "true" ]] ; then
                    debugHtml "${remote_url##*/}" "hex_dwnpage$j" "form_data: ${form_data}"$'\n'"${response}"
                fi
            fi
        else
            if [[ "$hexUseDownload" == "download2" ]]; then
                form_data="op=download1&id=${file_id}&rand=&usr_login=&fname=&ajax=1&method_free=1&dataType=json"
                response=$(tor_curl_request --insecure -s --data "$form_data" "https://hexload.com/download")
                if [[ "${DebugAllEnabled}" == "true" ]] ; then
                    debugHtml "${remote_url##*/}" "hex_dwnpage$j" "form_data: ${form_data}"$'\n'"${response}"
                fi
            else
                form_data="op=download2&id=${file_id}&rand=&usr_login=&fname=&ajax=1&method_free=1&dataType=json"
                response=$(tor_curl_request --insecure -s --data "$form_data" "https://hexload.com/download")
                if [[ "${DebugAllEnabled}" == "true" ]] ; then
                    debugHtml "${remote_url##*/}" "hex_dwnpage$j" "form_data: ${form_data}"$'\n'"${response}"
                fi
            fi
        fi
        filename=$(echo "$response" | grep -oPi '(?<="file_name":")[^"]+(?=")' | base64 --decode)
        download_url=$(echo "$response" | grep -oPi '(?<="link":")[^"]+(?=")' | base64 --decode)
        download_url=$(urlencode_spaces "$download_url")
        if grep -Eqi "Sorry, you have been blocked" <<< "$response"; then
            if ((j == hexmaxfetchfileretries)) ; then
                printf "\\n"
                echo -e "${YELLOW}| Too many failed attempts${NC}"
                warnAndRetryUnknownError=true
                if [[ "${finalAttempt}" == "true" ]] ; then
            		failedRetryDownload "${remote_url}" "" ""
            	fi
                return 1
            else
                printf " -"
                bDonePrint=true
                continue
            fi
        fi
        if grep -Eqi '<span id="countdown">Wait <span class="seconds">' <<< "$response"; then
            hexDownload2RetryCnt=$((hexDownload2RetryCnt + 1))
            if ((hexDownload2RetryCnt >=3)); then
                printf "\\n"
                echo -e "${RED}| Abort: Wait to download button loop detected (x3). File is probably gone.${NC}"
            	exitDownloadError=true
                removedDownload "${remote_url}"
                return 1
            fi
            wait_time=$(grep -oP '(?<=<span id="countdown">Wait <span class="seconds">).*?(?=</span> seconds.*$)' <<< "$response")
            if [[ "$hexUseDownload" == "download1" ]] && grep -Eqi 'name="op" value="download2">' <<< "$response"; then
                printf "\\n"
                echo -e "${YELLOW}| File uses download2.. switching.${NC}"
                hexUseDownload="download2"
            fi
            bNoNewTorIdent=true
            j=0 #Restart
            continue
        fi
        if grep -Eqi '>You have to wait' <<< "$response"; then
            if ((j == hexmaxfetchfileretries)) ; then
                req_msg=$(grep -oP '(?<=>You have to wait ).*?(?= till next download.*$)' <<< "$response")
                req_msg=$(sanitize_html_tags "${req_msg}")
                printf "\\n"
                echo -e "${YELLOW}| Failed: ${req_msg}.${NC}"
                warnAndRetryUnknownError=true
                if [[ "${finalAttempt}" == "true" ]] ; then
            		failedRetryDownload "${remote_url}" "${req_msg}" ""
            	fi
                return 1
            elif [[ "$hexUseDownload" == "download1" ]] && grep -Eqi 'name="op" value="download2">' <<< "$response"; then
                printf "\\n"
                echo -e "${YELLOW}| File uses download2.. switching.${NC}"
                hexUseDownload="download2"
                bNoNewTorIdent=true
                j=0 #Restart
                continue
            else
                printf " *"
                bDonePrint=true
                continue
            fi
        fi
        if grep -Eqi "No such file|The file you were looking for could not be found" <<< "$response"; then
            printf "\\n"
            echo -e "${RED}| The file was not found. It could be deleted or expired.${NC}"
            exitDownloadError=true
            removedDownload "${remote_url}"
            return 1
        fi
        if grep -Eqi 'class="alert alert-success"' <<< "$response"; then
            req_msg=$(grep -oPi '<strong>Whoo!</strong>  \K.*$' <<< "${response}")
            req_msg=$(sanitize_html_tags "${req_msg}")
            printf "\\n"
            echo -e "${RED}| Error: ${req_msg}${NC}"
            exitDownloadError=true
            failedRetryDownload "${remote_url}" "$req_msg" ""
            return 1
        fi
        if [[ "$hexUseDownload" == "download1" ]] && grep -Eqi 'name="op" value="download2">' <<< "$response"; then
            printf "\\n"
            echo -e "${YELLOW}| File uses download2.. switching.${NC}"
            hexUseDownload="download2"
            bNoNewTorIdent=true
            j=0 #Restart
            continue
        fi
        if [[ -z "$download_url" ]]; then
            if ((j == hexmaxfetchfileretries)) ; then
                printf "\\n"
                echo -e "${RED}| Failed to extract CDN URL${NC}"
                warnAndRetryUnknownError=true
                if [[ "${finalAttempt}" == "true" ]] ; then
            		failedRetryDownload "${remote_url}" "Failed to extract CDN URL" ""
            	fi
                return 1
            else
                continue
            fi
        fi
        if [[ "$filename_override" == "" ]] && [[ -z "$filename" ]] ; then
            if ((j == hexmaxfetchfileretries)) ; then
                printf "\\n"
                echo -e "${RED}| Failed to extract file name${NC}"
                warnAndRetryUnknownError=true
                if [[ "${finalAttempt}" == "true" ]] ; then
            		failedRetryDownload "${remote_url}" "ailed to extract file name" ""
            	fi
                return 1
            else
                continue
            fi
        fi
        break #Good to go here
    done
    touch "${WorkDir}/.flocks/${remote_url//[^a-zA-Z0-9]/}"
	if [[ ! "$filename_override" == "" ]] ; then
		filename="$filename_override"
	fi
    filename=$(sanitize_file_or_folder_name "${filename}")
    printf "\\n"
    echo -e "${GREEN}| Fetching file info…${NC}"
	hexmaxfetchfileretries=4
	for ((j=1; j<=$hexmaxfetchfileretries; j++)); do
        printf " ."
		CLEANSTRING=${remote_url//[^a-zA-Z0-9]/}
		trap "rm -f ${WorkDir}/.flocks/${CLEANSTRING}; echo ""; tput cnorm; exit" 0 1 2 3 6 15
        tor_identity="${RANDOM}"
        file_header=$(tor_curl_request --insecure --head -L -s --referer "$file_url" "$download_url")
        if [[ "${DebugAllEnabled}" == "true" ]] ; then
            debugHtml "${remote_url##*/}" "hex_head$j" "download_url: ${download_url}"$'\n'"${file_header}"
        fi
	    if ! grep -Eqi 'HTTP/2 200|HTTP/1.1 200|200 OK' <<< $file_header ; then
	        if ((j < hexmaxfetchfileretries)); then
    	        continue
    	    else
        	    printf "\\n"
                echo -e "${RED}| Bad header response…${NC}"
                exitDownloadError=true
        		failedDownload "${remote_url}" "Bad header response (not 200)" ""
                return 1
    	    fi
	    fi
        file_size_bytes=$(grep -oPi '(?<=content-length: ).*' <<< "$file_header")
        file_size_bytes=${file_size_bytes//[$'\t\r\n']}
        if [[ -z $file_size_bytes ]] ; then
            if ((j < hexmaxfetchfileretries)); then
                printf "\\n"
                echo -e "${YELLOW}| Filesize not found… retry${NC}"
                warnAndRetryUnknownError=true
                if [[ "${finalAttempt}" == "true" ]] ; then
            		failedRetryDownload "${remote_url}" "Filesize not found" ""
            	fi
                return 1
            else
                continue
            fi        
        else
            file_size_readable="$(numfmt --to=iec --from=auto --format "%.2f" <<< "$file_size_bytes")"
            break
        fi        
    done
    printf "\\n"
    echo -e "${YELLOW}| File name:${NC}\t\"${filename}\""
    echo -e "${YELLOW}| File size:${NC}\t${file_size_readable}"
    file_path="${download_inflight_path}${filename}"
	flockDownload="${WorkDir}/.flocks/${filename//[^a-zA-Z0-9\.\_\-]/}.flock"
    if CheckFileSize "${remote_url}" "${file_size_bytes}" ; then
        return 1
    fi
    if CheckDownloadExists "$remote_url" "$MoveToFolder" "$filecnt" "$filename" "$file_path" "$completed_location" ; then
        return 1
    fi
	echo "${remote_url//[^a-zA-Z0-9]/}" > $flockDownload
}
#!
#! ----------- (3) Fetch File / Download File Function --------------- #
#!
hex_GetFile() {
    echo -e "${GREEN}# Downloading…"
    echo -e "${YELLOW}| File path:${NC}\t./.inflight/${file_path##*/}\n"
    fileCnt=$1
    retryCnt=$2
    finalAttempt=$3
	flockDownload="${WorkDir}/.flocks/${filename//[^a-zA-Z0-9\.\_\-]/}.flock"
    for ((j=1; j<=$MaxDownloadRetries; j++)); do
        pd_presize=0
        if [[ -f "$file_path" ]] ; then
            pd_presize=$(stat --format="%s" "$file_path" | tr -d '[:space:]')
        fi
        GetRandomUA
        tor_identity="${RANDOM}"
        CLEANSTRING=${remote_url//[^a-zA-Z0-9]/}
        trap "rm -f ${WorkDir}/.flocks/${CLEANSTRING}; rm -f $flockDownload; echo ""; tput cnorm; exit" 0 1 2 3 6 15
        if [[ "${RateMonitorEnabled}" == "true" ]]; then
            tor_curl_request --insecure --speed-limit $DownloadSpeedMin --speed-time $DownloadTimeoutInterval --referer "$file_url" "$download_url" --continue-at - --output "$file_path"
        else
            tor_curl_request --insecure --referer "$file_url" "$download_url" --continue-at - --output "$file_path"
        fi
        received_file_size=0
        if [[ -f "$file_path" ]] ; then
            received_file_size=$(stat --format="%s" "$file_path" | tr -d '[:space:]')
        fi
        if CheckNoHtml "$remote_url" "$filename" "$file_path" ; then
            containsHtml=false
        else
            containsHtml=true
        fi
        downDelta=$(( received_file_size - pd_presize ))
        if [[ "${received_file_size}" -ne "${file_size_bytes}" ]] || [[ "$containsHtml" == "true" ]]; then	        
            if [[ "${AutoRepairBadPartials}" == "true" ]] && (( downDelta > 0 && downDelta < 1024 )) ; then
                if [[ -f "${file_path}" ]] ; then
                    if ((pd_presize > 0)); then
                        echo -e "${YELLOW}Bad node / HTML found:${NC} reverting to previous file..."
                        truncateDownload "$remote_url" "$filename" "$pd_presize" "$received_file_size"
                        truncate -s $pd_presize "${file_path}"
                    else
                        echo -e "${YELLOW}Bad node / HTML found:${NC} tainted partial removed..."
                        rm -f "${file_path}"
                    fi
                fi
                if  ((j >= $MaxDownloadRetries)) ; then
                    rm -f "$flockDownload";
                    if [[ "${finalAttempt}" == "true" ]] ; then
                		droppedSizeBadDownload "${remote_url}" "${filename}" "${received_file_size}"
                	fi
                    return 1
	            else
	                continue
	            fi
            elif [[ "${AutoRepairBadPartials}" == "true" ]] && [[ "$containsHtml" == "true" ]] ; then
                if [[ -f "${file_path}" ]] ; then
                    if ((pd_presize > 0)); then
                        echo -e "${YELLOW}Bad node / HTML found:${NC} reverting to previous file..."
                        truncateDownload "$remote_url" "$filename" "$pd_presize" "$received_file_size"
                        truncate -s $pd_presize "${file_path}"
                    else
                        echo -e "${YELLOW}Bad node / HTML found:${NC} tainted partial removed..."
                        rm -f "${file_path}"
                    fi
                fi
                if  ((j >= $MaxDownloadRetries)) ; then
                    rm -f "$flockDownload";
                    if [[ "${finalAttempt}" == "true" ]] ; then
                		droppedSizeBadDownload "${remote_url}" "${filename}" "${received_file_size}"
                	fi
                    return 1
	            else
	                continue
	            fi
            elif (( downDelta > 0 && downDelta < 1024 )) || [[ "$containsHtml" == "true" ]] ; then
                if [[ -f "$file_path" ]] ; then
                    rm -rf "$file_path"
                fi
                echo -e "\n${YELLOW}Bad node / HTML found:${NC} tainted partial removed..."
                if  ((j >= $MaxDownloadRetries)) ; then
                    rm -f "$flockDownload";
                    if [[ "${finalAttempt}" == "true" ]] ; then
                		droppedSizeBadDownload "${remote_url}" "${filename}" "${received_file_size}"
                	fi
                    return 1
	            else
	                continue
	            fi
            fi
            if [[ "${received_file_size}" -ne "${file_size_bytes}" ]]; then
                echo -e "\n${RED}Download failed, file is incomplete.${NC}"
                if  ((j >= $MaxDownloadRetries)) ; then
                    rm -f "$flockDownload";
                    if [[ "${finalAttempt}" == "true" ]] ; then
                		droppedSizeBadDownload "${remote_url}" "${filename}" "${received_file_size}"
                	fi
                    return 1
	            else
	                continue
	            fi
            fi
		else
		    break
        fi
    done
    rm -f "$flockDownload";
    ProcessCompletedDownload "$remote_url" "$MoveToFolder" "$filecnt" "$filename" "$file_size_bytes" "$completed_location" "$file_path"
	return 0
}
#!
#! --------------- Host Extra Functions ------------------- #
#!