Use shared code base

src/util.go

@@ -1,91 +1,14 @@
 package main
 
 import (
-	"crypto/sha1"
 	_ "embed"
-	"encoding/hex"
 	"fmt"
-	"io"
 	"log"
-	"net/http"
 	"os"
-	"regexp"
 	"strconv"
 	"strings"
-	"sync"
 )
 
-var (
-	//go:embed icon.png
-	defaultIconBytes []byte
-	ipAddressRegExp  = regexp.MustCompile(`^\d{1,3}(\.\d{1,3}){3}$`)
-)
-
-func GetBlockedServerList() error {
-	resp, err := http.Get("https://sessionserver.mojang.com/blockedservers")
-
-	if err != nil {
-		return err
-	}
-
-	if resp.StatusCode != http.StatusOK {
-		return fmt.Errorf("unexpected status code: %d", resp.StatusCode)
-	}
-
-	defer resp.Body.Close()
-
-	body, err := io.ReadAll(resp.Body)
-
-	if err != nil {
-		return err
-	}
-
-	blockedServers = &MutexArray[string]{
-		List:  strings.Split(string(body), "\n"),
-		Mutex: &sync.Mutex{},
-	}
-
-	return nil
-}
-
-func IsBlockedAddress(address string) bool {
-	split := strings.Split(strings.ToLower(address), ".")
-
-	isIPAddress := ipAddressRegExp.MatchString(address)
-
-	for k := range split {
-		newAddress := ""
-
-		switch k {
-		case 0:
-			{
-				newAddress = strings.Join(split, ".")
-
-				break
-			}
-		default:
-			{
-				if isIPAddress {
-					newAddress = fmt.Sprintf("%s.*", strings.Join(split[0:len(split)-k], "."))
-				} else {
-					newAddress = fmt.Sprintf("*.%s", strings.Join(split[k:], "."))
-				}
-
-				break
-			}
-		}
-
-		newAddressBytes := sha1.Sum([]byte(newAddress))
-		newAddressHash := hex.EncodeToString(newAddressBytes[:])
-
-		if blockedServers.Has(newAddressHash) {
-			return true
-		}
-	}
-
-	return false
-}
-
 func ParseAddress(address string, defaultPort uint16) (string, uint16, error) {
 	result := strings.SplitN(address, ":", 2)
 
@@ -119,22 +42,3 @@ func GetInstanceID() (uint16, error) {
 
 	return 0, nil
 }
-
-type MutexArray[K comparable] struct {
-	List  []K
-	Mutex *sync.Mutex
-}
-
-func (m *MutexArray[K]) Has(value K) bool {
-	m.Mutex.Lock()
-
-	defer m.Mutex.Unlock()
-
-	for _, v := range m.List {
-		if v == value {
-			return true
-		}
-	}
-
-	return false
-}