update v2ray geofiles on openwrt passwall

update_dat_files.sh

#!/bin/ash

ASSETS_DIR="/usr/share/v2ray"
GEOIP_FILE_NAME="geoip.dat"
GEOSITE_FILE_NAME="geosite.dat"
RELEASE_BASE_URL="https://raw.githubusercontent.com/Chocolate4U/Iran-v2ray-rules/release/"

update_file() {
    url="$RELEASE_BASE_URL$1"
    current_file="$ASSETS_DIR/$1"

    if [ -f "$current_file" ]; then
        new_checksum=$(curl -L "$url.sha256sum" | cut -d " " -f 1)
        current_checksum=$(sha256sum "$current_file" | cut -d " " -f 1)

        # Compare the two checksums
        if [ "$new_checksum" != "$current_checksum" ]; then
            curl -L "$url" -o "$current_file.temp"
            # Replace the current file with the new file only if the new one is valid
            if [ "$(sha256sum "$current_file.temp" | cut -d " " -f 1)" == "$new_checksum" ]; then
                mv "$current_file.temp" "$current_file"
                echo "$1 file updated successfully."
                return 0
            else
                rm "$current_file.temp"
                echo "$1 file is invalid."
                return 1
            fi
        else
            echo "$1 file is already up to date."
            return 2
        fi
    else
        curl -L "$url" -o "$current_file"
        echo "$1 file downloaded successfully."
        return 0
    fi

    return 3
}


update_file "$GEOIP_FILE_NAME"
geoip_updated=$?
update_file "$GEOSITE_FILE_NAME"
geosite_updated=$?

if [ $geoip_updated -eq 0 ] || [ $geosite_updated -eq 0 ]; then
    # Update nftset table
    logger -p info -t passwall "geofiles updated, reloading nftset"
    sh /usr/share/passwall2/nftables.sh flush_nftset_reload > /dev/null 2>&1 &
    echo "passwall nftset reloaded"
else
    echo "No file updated."
fi