579 lines
17 KiB
Go
579 lines
17 KiB
Go
package main
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import (
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"crypto/rand"
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"fmt"
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"log"
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"net/http"
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)
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const (
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passwordLength = 32
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// Zeichensatz mit 62 möglichen Zeichen pro Position
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chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"
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// Zeichensatz mit 58 möglichen Zeichen pro Position
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// Verwechslungsanfällige Zeichen (0, O, 1, l, I) sind nicht enthalten.
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//
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// ## Security Note: ################################################
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// Der reduzierte Zeichensatz setzt den Keyspace von 10^57 auf 10^56 herab.
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// Die Entropie wird von ~192.6 Bit auf ~190.6 Bit herabgesetzt.
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// Solange die Passwortlänge von 32 Zeichen beibehalten wird ist der
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// Sicherheitsverlust durch einen reduzierten Zeichensatz akzeptabel,
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// weil der Keyspace immer noch so groß ist dass ein erraten praktisch
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// unmöglich ist.
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//
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//const chars = "ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnpqrstuvwxyz23456789"
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)
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func generatePassword() string {
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password := make([]byte, passwordLength)
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_, err := rand.Read(password)
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if err != nil {
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log.Fatal(err)
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}
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for i := 0; i < passwordLength; i++ {
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password[i] = chars[int(password[i])%len(chars)]
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}
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return string(password)
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}
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func passwordHandler(w http.ResponseWriter, r *http.Request) {
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password := generatePassword()
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fmt.Fprint(w, password)
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}
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func helpHandler(w http.ResponseWriter, r *http.Request) {
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helpHTML := `
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<!DOCTYPE html>
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<html>
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<head>
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<title>Hilfe</title>
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<style>
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:root {
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--bg-color: #f5f5f5;
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--text-color: #333;
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--container-bg: white;
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--button-bg: #007BFF;
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--button-hover: #0056b3;
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--copy-button-bg: #4CAF50;
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--copy-button-hover: #45a049;
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--password-bg: #f0f0f0;
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--border-color: #ddd;
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--shadow-color: rgba(0, 0, 0, 0.1);
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}
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@media (prefers-color-scheme: dark) {
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:root {
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--bg-color: #121212;
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--text-color: #e0e0e0;
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--container-bg: #1e1e1e;
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--button-bg: #2a7df4;
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--button-hover: #1a5fb4;
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--copy-button-bg: #4caf60;
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--copy-button-hover: #3d8b40;
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--password-bg: #2d2d2d;
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--border-color: #444;
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--shadow-color: rgba(0, 0, 0, 0.3);
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}
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}
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body {
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font-family: 'Helvetica Neue', Arial, sans-serif;
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display: flex;
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justify-content: center;
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align-items: center;
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height: 100vh;
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margin: 0;
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background-color: var(--bg-color);
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color: var(--text-color);
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transition: background-color 0.3s, color 0.3s;
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}
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.container {
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text-align: center;
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background: var(--container-bg);
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padding: 2rem;
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border-radius: 8px;
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box-shadow: 0 2px 10px var(--shadow-color);
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width: 90%;
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min-width: 600px;
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position: relative;
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}
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h1 {
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font-size: 1.5rem;
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margin-bottom: 1.5rem;
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color: var(--text-color);
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}
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#password {
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font-family: 'Courier New', Courier, monospace;
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font-size: 1.2rem;
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letter-spacing: 1px;
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margin: 1rem auto;
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padding: 0.8rem;
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background: var(--password-bg);
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border-radius: 4px;
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border: 1px solid var(--border-color);
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width: 90%;
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word-break: break-all;
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color: var(--text-color);
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}
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.copy-button {
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background: var(--copy-button-bg);
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color: white;
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border: none;
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padding: 0.6rem 1.2rem;
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font-size: 1rem;
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border-radius: 4px;
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cursor: pointer;
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transition: background 0.2s;
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margin: 0.3rem;
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}
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.copy-button:hover {
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background: var(--copy-button-hover);
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}
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.renew-button {
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background: var(--button-bg);
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color: white;
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border: none;
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padding: 0.6rem 1.2rem;
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font-size: 1rem;
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border-radius: 4px;
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cursor: pointer;
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transition: background 0.2s;
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margin: 0.3rem;
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}
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.renew-button:hover {
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background: var(--button-hover);
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}
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.help-link {
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position: absolute;
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top: 1rem;
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right: 1rem;
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font-size: 1.2rem;
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color: var(--text-color);
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opacity: 0.7;
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text-decoration: none;
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}
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.help-link:hover {
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opacity: 1;
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}
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#toast {
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visibility: hidden;
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min-width: 150px;
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background-color: var(--copy-button-bg);
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color: white;
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text-align: center;
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border-radius: 4px;
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padding: 0.5rem;
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position: fixed;
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top: 20px;
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right: 20px;
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z-index: 1;
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font-size: 0.9rem;
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box-shadow: 0 2px 10px var(--shadow-color);
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}
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.help-container {
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text-align: left;
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background: var(--container-bg);
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padding: 2rem;
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border-radius: 8px;
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box-shadow: 0 2px 10px var(--shadow-color);
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max-width: 800px;
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width: 90%;
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min-width: 600px;
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color: var(--text-color);
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}
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pre {
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font-family: 'Courier New', Courier, monospace;
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background: var(--password-bg);
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padding: 0.8rem;
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border-radius: 4px;
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color: var(--text-color);
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border: 1px solid var(--border-color);
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}
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a {
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color: var(--button-bg);
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text-decoration: none;
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}
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a:hover {
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text-decoration: underline;
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}
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</style>
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</head>
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<body>
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<div class="help-container">
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<h1>Hilfe: API-Endpunkt</h1>
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<p>
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Diese Anwendung bietet einen API-Endpunkt, um Passwörter direkt über die Kommandozeile abzurufen.
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Der Endpunkt gibt das Passwort im Plain-Text-Format zurück.
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</p>
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<h2>Endpunkt:</h2>
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<p><code>http://localhost:8080/api/password</code></p>
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<h2>Beispiele:</h2>
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<h3>Mac/Linux (Terminal):</h3>
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<pre>echo $(curl -s http://localhost:8080/api/password)</pre>
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<h3>Windows (PowerShell):</h3>
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<pre>Invoke-RestMethod -Uri http://localhost:8080/api/password</pre>
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<h3>Windows (cmd):</h3>
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<pre>curl http://localhost:8080/api/password</pre>
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<p>
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<a href="/">Zurück zur Passwort-Generierung</a>
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</p>
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</div>
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<script>
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// Darkmode-Toggle-Funktion (optional)
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function toggleDarkMode() {
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const root = document.documentElement;
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const isDark = root.style.getPropertyValue('--bg-color') === 'rgb(18, 18, 18)';
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if (isDark) {
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// Zu Lightmode wechseln
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root.style.setProperty('--bg-color', '#f5f5f5');
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root.style.setProperty('--text-color', '#333');
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root.style.setProperty('--container-bg', 'white');
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root.style.setProperty('--button-bg', '#007BFF');
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root.style.setProperty('--button-hover', '#0056b3');
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root.style.setProperty('--copy-button-bg', '#4CAF50');
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root.style.setProperty('--copy-button-hover', '#45a049');
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root.style.setProperty('--password-bg', '#f0f0f0');
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root.style.setProperty('--border-color', '#ddd');
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root.style.setProperty('--shadow-color', 'rgba(0, 0, 0, 0.1)');
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localStorage.setItem('theme', 'light');
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} else {
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// Zu Darkmode wechseln
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root.style.setProperty('--bg-color', '#121212');
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root.style.setProperty('--text-color', '#e0e0e0');
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root.style.setProperty('--container-bg', '#1e1e1e');
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root.style.setProperty('--button-bg', '#2a7df4');
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root.style.setProperty('--button-hover', '#1a5fb4');
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root.style.setProperty('--copy-button-bg', '#4caf60');
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root.style.setProperty('--copy-button-hover', '#3d8b40');
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root.style.setProperty('--password-bg', '#2d2d2d');
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root.style.setProperty('--border-color', '#444');
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root.style.setProperty('--shadow-color', 'rgba(0, 0, 0, 0.3)');
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localStorage.setItem('theme', 'dark');
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}
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}
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// Prüfe, ob Nutzer eine manuelle Einstellung gespeichert hat
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if (localStorage.getItem('theme') === 'dark') {
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toggleDarkMode();
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} else if (localStorage.getItem('theme') === 'light') {
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// Stelle sicher, dass Lightmode aktiv ist (falls Systemtheme dark ist)
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document.documentElement.style.setProperty('--bg-color', '#f5f5f5');
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document.documentElement.style.setProperty('--text-color', '#333');
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document.documentElement.style.setProperty('--container-bg', 'white');
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document.documentElement.style.setProperty('--button-bg', '#007BFF');
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document.documentElement.style.setProperty('--button-hover', '#0056b3');
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document.documentElement.style.setProperty('--copy-button-bg', '#4CAF50');
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document.documentElement.style.setProperty('--copy-button-hover', '#45a049');
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document.documentElement.style.setProperty('--password-bg', '#f0f0f0');
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document.documentElement.style.setProperty('--border-color', '#ddd');
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document.documentElement.style.setProperty('--shadow-color', 'rgba(0, 0, 0, 0.1)');
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}
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</script>
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</body>
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</html>
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`
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w.Header().Set("Content-Type", "text/html; charset=utf-8")
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fmt.Fprint(w, helpHTML)
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}
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func webHandler(w http.ResponseWriter, r *http.Request) {
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password := generatePassword()
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html := fmt.Sprintf(
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`<DOCTYPE html>
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<html>
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<head>
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<title>Passwort-Generator</title>
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<style>
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:root {
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--bg-color: #f5f5f5;
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--text-color: #333;
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--container-bg: white;
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--button-bg: #007BFF;
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--button-hover: #0056b3;
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--copy-button-bg: #4CAF50;
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--copy-button-hover: #45a049;
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--password-bg: #f0f0f0;
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--border-color: #ddd;
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--shadow-color: rgba(0, 0, 0, 0.1);
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}
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@media (prefers-color-scheme: dark) {
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:root {
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--bg-color: #121212;
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--text-color: #e0e0e0;
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--container-bg: #1e1e1e;
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--button-bg: #2a7df4;
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--button-hover: #1a5fb4;
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--copy-button-bg: #4caf60;
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--copy-button-hover: #3d8b40;
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--password-bg: #2d2d2d;
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--border-color: #444;
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--shadow-color: rgba(0, 0, 0, 0.3);
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}
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}
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body {
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font-family: 'Helvetica Neue', Arial, sans-serif;
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display: flex;
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justify-content: center;
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align-items: center;
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height: 100vh;
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margin: 0;
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background-color: var(--bg-color);
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color: var(--text-color);
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transition: background-color 0.3s, color 0.3s;
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}
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.container {
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text-align: center;
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background: var(--container-bg);
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padding: 2rem;
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border-radius: 8px;
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box-shadow: 0 2px 10px var(--shadow-color);
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width: 90%;
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min-width: 600px;
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position: relative;
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}
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h1 {
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font-size: 1.5rem;
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margin-bottom: 1.5rem;
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color: var(--text-color);
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}
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#password {
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font-family: 'Courier New', Courier, monospace;
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font-size: 1.2rem;
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letter-spacing: 1px;
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margin: 1rem auto;
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padding: 0.8rem;
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background: var(--password-bg);
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border-radius: 4px;
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border: 1px solid var(--border-color);
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width: 90%;
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word-break: break-all;
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color: var(--text-color);
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}
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.copy-button {
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background: var(--copy-button-bg);
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color: white;
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border: none;
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padding: 0.6rem 1.2rem;
|
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font-size: 1rem;
|
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border-radius: 4px;
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cursor: pointer;
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transition: background 0.2s;
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margin: 0.3rem;
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}
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.copy-button:hover {
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background: var(--copy-button-hover);
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}
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.renew-button {
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background: var(--button-bg);
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color: white;
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border: none;
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padding: 0.6rem 1.2rem;
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font-size: 1rem;
|
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border-radius: 4px;
|
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cursor: pointer;
|
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transition: background 0.2s;
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margin: 0.3rem;
|
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}
|
|
|
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.renew-button:hover {
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background: var(--button-hover);
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}
|
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|
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.help-link {
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position: absolute;
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top: 1rem;
|
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right: 1rem;
|
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font-size: 1.2rem;
|
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color: var(--text-color);
|
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opacity: 0.7;
|
|
text-decoration: none;
|
|
}
|
|
|
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.help-link:hover {
|
|
opacity: 1;
|
|
}
|
|
|
|
#toast {
|
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visibility: hidden;
|
|
min-width: 150px;
|
|
background-color: var(--copy-button-bg);
|
|
color: white;
|
|
text-align: center;
|
|
border-radius: 4px;
|
|
padding: 0.5rem;
|
|
position: fixed;
|
|
top: 20px;
|
|
right: 20px;
|
|
z-index: 1;
|
|
font-size: 0.9rem;
|
|
box-shadow: 0 2px 10px var(--shadow-color);
|
|
}
|
|
|
|
.help-container {
|
|
text-align: left;
|
|
background: var(--container-bg);
|
|
padding: 2rem;
|
|
border-radius: 8px;
|
|
box-shadow: 0 2px 10px var(--shadow-color);
|
|
max-width: 800px;
|
|
width: 90%;
|
|
min-width: 600px;
|
|
color: var(--text-color);
|
|
}
|
|
|
|
pre {
|
|
font-family: 'Courier New', Courier, monospace;
|
|
background: var(--password-bg);
|
|
padding: 0.8rem;
|
|
border-radius: 4px;
|
|
color: var(--text-color);
|
|
border: 1px solid var(--border-color);
|
|
}
|
|
|
|
a {
|
|
color: var(--button-bg);
|
|
text-decoration: none;
|
|
}
|
|
|
|
a:hover {
|
|
text-decoration: underline;
|
|
}
|
|
</style>
|
|
</head>
|
|
<body>
|
|
<div class="container">
|
|
<a href="/help" class="help-link">API</a>
|
|
<button onclick="toggleDarkMode()" style="position: absolute; top: 1rem; left: 1rem; background: transparent; border: none; color: var(--text-color); font-size: 1.2rem; cursor: pointer;">🌓</button>
|
|
|
|
<a class="about-link" href="https://gitea.scu.si/FlorianWalther/Web-Password">code</a>
|
|
<h1>Generiertes Passwort</h1>
|
|
<div id="password">%s</div>
|
|
<div class="buttons">
|
|
<button class="copy-button" onclick="copyToClipboard()">In Zwischenablage kopieren</button>
|
|
<button class="renew-button" onclick="generateNewPassword()">Neues Passwort generieren</button>
|
|
</div>
|
|
<div id="toast">✓ Kopiert!</div>
|
|
</div>
|
|
<script>
|
|
function copyToClipboard() {
|
|
const password = document.getElementById("password").innerText;
|
|
navigator.clipboard.writeText(password).then(() => {
|
|
const toast = document.getElementById("toast");
|
|
toast.style.visibility = "visible";
|
|
setTimeout(() => {
|
|
toast.style.visibility = "hidden";
|
|
}, 1500); // Toast verschwindet nach 1,5 Sekunden
|
|
}).catch(err => {
|
|
console.error("Fehler beim Kopieren: ", err);
|
|
alert("Kopieren fehlgeschlagen. Bitte manuell kopieren: " + password);
|
|
});
|
|
}
|
|
function generateNewPassword() {
|
|
fetch("/api/password")
|
|
.then(response => response.text())
|
|
.then(password => {
|
|
document.getElementById("password").innerText = password;
|
|
})
|
|
.catch(error => console.error("Fehler:", error));
|
|
}
|
|
</script>
|
|
<script>
|
|
// Darkmode-Toggle-Funktion (optional)
|
|
function toggleDarkMode() {
|
|
const root = document.documentElement;
|
|
const isDark = root.style.getPropertyValue('--bg-color') === 'rgb(18, 18, 18)';
|
|
if (isDark) {
|
|
// Zu Lightmode wechseln
|
|
root.style.setProperty('--bg-color', '#f5f5f5');
|
|
root.style.setProperty('--text-color', '#333');
|
|
root.style.setProperty('--container-bg', 'white');
|
|
root.style.setProperty('--button-bg', '#007BFF');
|
|
root.style.setProperty('--button-hover', '#0056b3');
|
|
root.style.setProperty('--copy-button-bg', '#4CAF50');
|
|
root.style.setProperty('--copy-button-hover', '#45a049');
|
|
root.style.setProperty('--password-bg', '#f0f0f0');
|
|
root.style.setProperty('--border-color', '#ddd');
|
|
root.style.setProperty('--shadow-color', 'rgba(0, 0, 0, 0.1)');
|
|
localStorage.setItem('theme', 'light');
|
|
} else {
|
|
// Zu Darkmode wechseln
|
|
root.style.setProperty('--bg-color', '#121212');
|
|
root.style.setProperty('--text-color', '#e0e0e0');
|
|
root.style.setProperty('--container-bg', '#1e1e1e');
|
|
root.style.setProperty('--button-bg', '#2a7df4');
|
|
root.style.setProperty('--button-hover', '#1a5fb4');
|
|
root.style.setProperty('--copy-button-bg', '#4caf60');
|
|
root.style.setProperty('--copy-button-hover', '#3d8b40');
|
|
root.style.setProperty('--password-bg', '#2d2d2d');
|
|
root.style.setProperty('--border-color', '#444');
|
|
root.style.setProperty('--shadow-color', 'rgba(0, 0, 0, 0.3)');
|
|
localStorage.setItem('theme', 'dark');
|
|
}
|
|
}
|
|
|
|
// Prüfe, ob Nutzer eine manuelle Einstellung gespeichert hat
|
|
if (localStorage.getItem('theme') === 'dark') {
|
|
toggleDarkMode();
|
|
} else if (localStorage.getItem('theme') === 'light') {
|
|
// Stelle sicher, dass Lightmode aktiv ist (falls Systemtheme dark ist)
|
|
document.documentElement.style.setProperty('--bg-color', '#f5f5f5');
|
|
document.documentElement.style.setProperty('--text-color', '#333');
|
|
document.documentElement.style.setProperty('--container-bg', 'white');
|
|
document.documentElement.style.setProperty('--button-bg', '#007BFF');
|
|
document.documentElement.style.setProperty('--button-hover', '#0056b3');
|
|
document.documentElement.style.setProperty('--copy-button-bg', '#4CAF50');
|
|
document.documentElement.style.setProperty('--copy-button-hover', '#45a049');
|
|
document.documentElement.style.setProperty('--password-bg', '#f0f0f0');
|
|
document.documentElement.style.setProperty('--border-color', '#ddd');
|
|
document.documentElement.style.setProperty('--shadow-color', 'rgba(0, 0, 0, 0.1)');
|
|
}
|
|
</script>
|
|
|
|
</body>
|
|
</html>`,
|
|
password,
|
|
)
|
|
|
|
w.Header().Set("Content-Type", "text/html; charset=utf-8")
|
|
fmt.Fprint(w, html)
|
|
}
|
|
|
|
func main() {
|
|
http.HandleFunc("/", webHandler)
|
|
http.HandleFunc("/api/password", passwordHandler)
|
|
http.HandleFunc("/help", helpHandler)
|
|
log.Println("Server läuft auf http://localhost:8080")
|
|
log.Println("Plain-Text-Passwort: curl http://localhost:8080/api/password")
|
|
log.Fatal(http.ListenAndServe(":8080", nil))
|
|
}
|