87 行
1.7 KiB
Go
87 行
1.7 KiB
Go
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package main
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import (
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"bufio"
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"crypto/sha1"
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"encoding/hex"
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"log"
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"net"
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"os"
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"strings"
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)
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var sofname = "pwnd"
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var version = "0.0.0"
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var serverhost = "0.0.0.0"
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var serverport = "9951"
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var pwnroot = "/mnt/pwned/hashes/"
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func checkPwnedHash(hash string) string {
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prefix := strings.ToUpper(hash[:4])
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filePath := pwnroot + prefix + ".txt"
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file, err := os.Open(filePath)
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if err != nil {
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log.Printf("ファイル「%s」を開けられません: %v\n", filePath, err)
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return "-1"
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}
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defer file.Close()
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scanner := bufio.NewScanner(file)
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for scanner.Scan() {
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line := scanner.Text()
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parts := strings.Split(line, ":")
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if len(parts) != 2 {
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continue
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}
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if parts[0] == strings.ToUpper(hash) {
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return parts[1]
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}
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}
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if err := scanner.Err(); err != nil {
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log.Printf("ファイル「%s]を読み込まれません: %v\n", filePath, err)
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}
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return "0"
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}
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func handleConnection(conn net.Conn) {
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defer conn.Close()
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buf := make([]byte, 256)
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n, err := conn.Read(buf)
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if err != nil {
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log.Println("クライアントからのエラー:", err)
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return
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}
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password := strings.TrimSpace(string(buf[:n]))
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sha1Hash := sha1.New()
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sha1Hash.Write([]byte(password))
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hash := hex.EncodeToString(sha1Hash.Sum(nil))
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res := checkPwnedHash(hash)
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conn.Write([]byte(res))
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}
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func main() {
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listener, err := net.Listen("tcp", serverhost + ":" + serverport)
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if err != nil {
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log.Fatal(err)
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}
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defer listener.Close()
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log.Println("サーバーは " + serverhost + ":" + serverport + " で実行中・・・")
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for {
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conn, err := listener.Accept()
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if err != nil {
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log.Println("接続エラー:", err)
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continue
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}
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go handleConnection(conn)
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}
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}
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