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Actualiser index.php

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yasss2627 2026-02-01 10:02:12 +00:00
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index.php
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<?php
// chatbot.php — Version sécurisée production + anti prompt injection
session_start();
/* =======================
CONFIG & ENV
======================= */
$env = parse_ini_file(__DIR__ . '/.env');
define('API_KEY', $env['DEESEEK_API_KEY']);
define('SYSTEM_PROMPT', $env['DEEPSEEK_SYSTEM_PROMPT']);
define('CSRF_SECRET', $env['CSRF_SECRET']);
/* =======================
HEADERS SÉCURITÉ
======================= */
header('X-Content-Type-Options: nosniff');
header('X-Frame-Options: SAMEORIGIN');
header('X-XSS-Protection: 1; mode=block');
/* =======================
SESSION INIT
======================= */
if (!isset($_SESSION['csrf'])) {
$_SESSION['csrf'] = hash_hmac('sha256', session_id(), CSRF_SECRET);
}
if (!isset($_SESSION['message_count'])) {
$_SESSION['message_count'] = 0;
}
/* =======================
HELPERS
======================= */
function isAjax(): bool {
return isset($_SERVER['HTTP_X_REQUESTED_WITH']) &&
strtolower($_SERVER['HTTP_X_REQUESTED_WITH']) === 'xmlhttprequest';
}
function sanitizeMessage(string $msg) {
$msg = trim($msg);
if ($msg === '' || mb_strlen($msg) > 500) {
return false;
}
return $msg;
}
/* =======================
ANTI PROMPT INJECTION
======================= */
function isPromptInjection(string $msg): bool {
// regex solide : détecte toutes les tentatives d'instructions systèmes, "ignore", "révèle", "prompt", etc.
$pattern = '/\b(ignore|oublie|révèle|prompt|instructions?|system|agis comme|tu es maintenant|roleplay|administrateur)\b/i';
return preg_match($pattern, $msg) === 1;
}
/* =======================
API CALL
======================= */
function callDeepSeekAPI(string $userMessage): string {
$payload = [
'model' => 'deepseek-chat',
'messages' => [
['role' => 'system', 'content' => SYSTEM_PROMPT],
['role' => 'user', 'content' => $userMessage]
],
'max_tokens' => 800,
'temperature' => 0,
'top_p' => 1
];
$ch = curl_init('https://api.deepseek.com/v1/chat/completions');
curl_setopt_array($ch, [
CURLOPT_RETURNTRANSFER => true,
CURLOPT_POST => true,
CURLOPT_POSTFIELDS => json_encode($payload),
CURLOPT_HTTPHEADER => [
'Content-Type: application/json',
'Authorization: Bearer ' . API_KEY
],
CURLOPT_TIMEOUT => 15
]);
$response = curl_exec($ch);
$http = curl_getinfo($ch, CURLINFO_HTTP_CODE);
curl_close($ch);
if ($http !== 200 || !$response) {
return 'Erreur du service.';
}
$json = json_decode($response, true);
return $json['choices'][0]['message']['content'] ?? 'Erreur de réponse.';
}
/* =======================
AJAX HANDLER
======================= */
if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['message'])) {
if (!isAjax()) {
http_response_code(403);
echo json_encode(['error' => 'Requête interdite']);
exit;
}
if (!isset($_POST['csrf']) || $_POST['csrf'] !== $_SESSION['csrf']) {
http_response_code(403);
echo json_encode(['error' => 'CSRF invalide']);
exit;
}
if ($_SESSION['message_count'] >= 1) {
echo json_encode(['error' => 'LIMIT_REACHED']);
exit;
}
$message = sanitizeMessage($_POST['message']);
if ($message === false) {
echo json_encode(['error' => 'Message invalide']);
exit;
}
// anti prompt injection
if (isPromptInjection($message)) {
echo json_encode(['response' => 'Demande à Bouchra.']);
exit;
}
$_SESSION['message_count']++;
$reply = callDeepSeekAPI($message);
echo json_encode([
'response' => $reply
]);
exit;
}
?>
<!DOCTYPE html>
<html lang="fr">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Assistant IA</title>
<link href="https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&display=swap" rel="stylesheet">
<style>
body { margin:0; font-family:Inter,sans-serif; background:linear-gradient(135deg,#667eea,#764ba2); height:100vh; display:flex; justify-content:center; align-items:center; }
.chat-wrapper { width:100%; max-width:900px; height:700px; background:#fff; border-radius:24px; display:flex; flex-direction:column; overflow:hidden; }
.chat-header { padding:20px; background:linear-gradient(135deg,#667eea,#764ba2); color:#fff; font-weight:600; }
#chat { flex:1; padding:20px; background:#f8fafc; overflow-y:auto; }
.message { display:flex; margin-bottom:16px; }
.message.user { justify-content:flex-end; }
.message-bubble { max-width:70%; padding:12px 16px; border-radius:14px; font-size:14px; }
.user .message-bubble { background:#667eea; color:#fff; }
.bot .message-bubble { background:#fff; color:#1e293b; }
.input-area { padding:20px; border-top:1px solid #e5e7eb; }
#limitPopup { display:none; margin-bottom:10px; padding:10px; background:#fff3cd; color:#92400e; border-radius:10px; font-size:13px; text-align:center; }
form { display:flex; gap:10px; }
input { flex:1; padding:12px; border-radius:10px; border:1px solid #ccc; }
button { padding:12px 20px; border:none; border-radius:10px; background:#667eea; color:#fff; font-weight:600; cursor:pointer; }
button:disabled { opacity:.6; cursor:not-allowed; }
</style>
</head>
<body>
<div class="chat-wrapper">
<div class="chat-header">Assistant IA</div>
<div id="chat">
<div class="message bot">
<div class="message-bubble">
Bonjour, comment puis‑je vous aider ?
</div>
</div>
</div>
<div class="input-area">
<div id="limitPopup">
Pour plus, prends l'abonnement en demandant à Bouchra
</div>
<form onsubmit="sendMsg();return false;">
<input type="hidden" id="csrf" value="<?= htmlspecialchars($_SESSION['csrf']) ?>">
<input id="userInput" type="text" placeholder="Votre message…" required>
<button id="sendBtn">Envoyer</button>
</form>
</div>
</div>
<script>
const chat = document.getElementById('chat');
const input = document.getElementById('userInput');
const btn = document.getElementById('sendBtn');
const csrf = document.getElementById('csrf').value;
const popup = document.getElementById('limitPopup');
function addMsg(text, isUser) {
const msg = document.createElement('div');
msg.className = 'message ' + (isUser ? 'user' : 'bot');
const bubble = document.createElement('div');
bubble.className = 'message-bubble';
bubble.textContent = text; // 🔒 XSS SAFE
msg.appendChild(bubble);
chat.appendChild(msg);
chat.scrollTop = chat.scrollHeight;
}
async function sendMsg() {
const txt = input.value.trim();
if (!txt) return;
addMsg(txt, true);
input.value = '';
btn.disabled = true;
const res = await fetch('', {
method:'POST',
headers:{
'Content-Type':'application/x-www-form-urlencoded',
'X-Requested-With':'XMLHttpRequest'
},
body:'message='+encodeURIComponent(txt)+'&csrf='+encodeURIComponent(csrf)
});
const data = await res.json();
if (data.error === 'LIMIT_REACHED') {
popup.style.display = 'block';
input.disabled = true;
btn.disabled = true;
addMsg('Accès limité.', false);
return;
}
addMsg(data.response || 'Erreur.', false);
btn.disabled = false;
}
</script>
</body>
</html>
<?php
// index.php — Chatbot sécurisé LLaMA 2 7B via Ollama
session_start();
/* =======================
CONFIG & ENV
======================= */
$env = parse_ini_file(__DIR__ . '/config/.env');
define('SYSTEM_PROMPT', $env['SYSTEM_PROMPT'] ?? '');
define('CSRF_SECRET', $env['CSRF_SECRET'] ?? 'changez-moi');
define('RATE_LIMIT', 10); // 10 messages / minute
define('RATE_WINDOW', 60); // 60 sec
/* =======================
HEADERS SÉCURITÉ
======================= */
header('X-Content-Type-Options: nosniff');
header('X-Frame-Options: SAMEORIGIN');
header('X-XSS-Protection: 1; mode=block');
/* =======================
SESSION INIT
======================= */
if (!isset($_SESSION['csrf'])) {
$_SESSION['csrf'] = hash_hmac('sha256', session_id(), CSRF_SECRET);
}
if (!isset($_SESSION['messages_timestamps'])) {
$_SESSION['messages_timestamps'] = [];
}
/* =======================
HELPERS
======================= */
function isAjax(): bool {
return isset($_SERVER['HTTP_X_REQUESTED_WITH']) &&
strtolower($_SERVER['HTTP_X_REQUESTED_WITH']) === 'xmlhttprequest';
}
function sanitizeMessage(string $msg) {
$msg = trim($msg);
if ($msg === '' || mb_strlen($msg) > 500) return false;
return $msg;
}
/* =======================
VALIDATION CARACTERES
======================= */
function hasInvalidCharacters(string $msg): bool {
// Bloque TOUS les caractères spéciaux sauf ?, !, . - et '
// Accepte : lettres, chiffres, espaces, et {?, !, ., -, '}
return preg_match('/[^a-zA-Z0-9À-ÿ\s\?\!\.\-\']/u', $msg) === 1;
}
/* =======================
VERBES D'ACTION INTERDITS
======================= */
function hasBlockedVerbs(string $msg): bool {
// Bloque les verbes qui demandent une action spécifique à l'IA
$blockedVerbs = [
'montre', 'affiche', 'révèle', 'expose',
'donne', 'envoie', 'fournis', 'transmets',
'répète', 'résume', 'reformule', 'paraphrase', 'récite',
'dis-moi', 'dis moi', 'raconte', 'explique', 'CTF', 'CTFM1'
];
$msg_lower = mb_strtolower($msg);
foreach ($blockedVerbs as $verb) {
if (preg_match('/\b' . preg_quote($verb) . '\b/i', $msg) === 1) {
return true;
}
}
return false;
}
/* =======================
MOTS SENSIBLES INTERDITS
======================= */
function hasBlockedWords(string $msg): bool {
// Bloque les mots sensibles qui demandent des infos confidentielles
$blockedWords = [
'flag', 'ctf',
'token', 'secret', 'clé', 'key',
'motdepasse', 'mot de passe', 'password',
'prompt', 'instruction', 'système', 'system', 'règle', 'consigne'
];
$msg_lower = mb_strtolower($msg);
foreach ($blockedWords as $word) {
if (preg_match('/\b' . preg_quote($word) . '\b/i', $msg) === 1) {
return true;
}
}
return false;
}
/* =======================
RATE LIMITING
======================= */
function checkRateLimit(): bool {
$now = time();
$window_start = $now - RATE_WINDOW;
$_SESSION['messages_timestamps'] = array_values(
array_filter($_SESSION['messages_timestamps'], fn($ts) => $ts > $window_start)
);
if (count($_SESSION['messages_timestamps']) >= RATE_LIMIT) return false;
$_SESSION['messages_timestamps'][] = $now;
return true;
}
/* =======================
APPEL LLaMA via Ollama
======================= */
function callLlamaAPI(string $userMessage): string {
// Vérifications de sécurité avec messages explicites
if (hasInvalidCharacters($userMessage)) {
return "Je ne répondrai pas car certains caractères spéciaux sont interdits (sauf ?, !, ., - et '). Demande à Bouchra si tu veux savoir pourquoi.";
}
if (hasBlockedVerbs($userMessage)) {
return "Je ne répondrai pas car ce message contient un verbe d'action interdit (montre, donne, répète, etc). Demande à Bouchra si tu veux savoir pourquoi.";
}
if (hasBlockedWords($userMessage)) {
return "Je ne répondrai pas car ce message contient un mot sensible (flag, token, prompt, etc). Demande à Bouchra si tu veux savoir pourquoi.";
}
$payload = [
'model' => 'llama2:7b',
'messages' => [
['role'=>'system', 'content'=> SYSTEM_PROMPT],
['role'=>'user', 'content'=> $userMessage],
],
'max_tokens' => 800,
'temperature' => 0.7
];
$ch = curl_init('http://localhost:11434/v1/chat/completions');
curl_setopt_array($ch, [
CURLOPT_RETURNTRANSFER => true,
CURLOPT_POST => true,
CURLOPT_POSTFIELDS => json_encode($payload),
CURLOPT_HTTPHEADER => ['Content-Type: application/json'],
CURLOPT_TIMEOUT => 300
]);
$response = curl_exec($ch);
$http = curl_getinfo($ch, CURLINFO_HTTP_CODE);
$error = curl_error($ch);
curl_close($ch);
// DEBUG: Log l'erreur
error_log("Ollama API - HTTP: $http, Error: $error, Response: " . substr($response, 0, 200));
if ($error) {
return "Erreur de connexion à Ollama: $error";
}
if ($http !== 200) {
return "Erreur Ollama (HTTP $http). Vérifiez que le service tourne sur localhost:11434";
}
if (!$response) {
return "Pas de réponse du service LLaMA.";
}
$json = json_decode($response, true);
if (!$json || !isset($json['choices'][0]['message']['content'])) {
error_log("JSON decode error: " . json_last_error_msg());
return "Erreur: réponse LLaMA malformée.";
}
return $json['choices'][0]['message']['content'];
}
/* =======================
AJAX HANDLER
======================= */
if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['message'])) {
if (!isAjax()) { http_response_code(403); echo json_encode(['error'=>'Requête interdite']); exit; }
if (!isset($_POST['csrf']) || $_POST['csrf'] !== $_SESSION['csrf']) { http_response_code(403); echo json_encode(['error'=>'CSRF invalide']); exit; }
if (!checkRateLimit()) { http_response_code(429); echo json_encode(['error'=>'LIMIT_REACHED']); exit; }
$message = sanitizeMessage($_POST['message']);
if ($message === false) { echo json_encode(['error'=>'Message invalide']); exit; }
$reply = callLlamaAPI($message);
echo json_encode(['response'=>$reply]);
exit;
}
?>
<!DOCTYPE html>
<html lang="fr">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>bobentaz</title>
<link href="https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&display=swap" rel="stylesheet">
<style>
body { margin:0; font-family:Inter,sans-serif; background:linear-gradient(135deg,#667eea,#764ba2); height:100vh; display:flex; justify-content:center; align-items:center; }
.chat-wrapper { width:100%; max-width:900px; height:700px; background:#fff; border-radius:24px; display:flex; flex-direction:column; overflow:hidden; }
.chat-header { padding:20px; background:linear-gradient(135deg,#667eea,#764ba2); color:#fff; font-weight:600; }
#chat { flex:1; padding:20px; background:#f8fafc; overflow-y:auto; }
.message { display:flex; margin-bottom:16px; }
.message.user { justify-content:flex-end; }
.message-bubble { max-width:70%; padding:12px 16px; border-radius:14px; font-size:14px; }
.user .message-bubble { background:#667eea; color:#fff; }
.bot .message-bubble { background:#fff; color:#1e293b; }
.input-area { padding:20px; border-top:1px solid #e5e7eb; }
#limitPopup { display:none; margin-bottom:10px; padding:10px; background:#fff3cd; color:#92400e; border-radius:10px; font-size:13px; text-align:center; }
form { display:flex; gap:10px; }
input { flex:1; padding:12px; border-radius:10px; border:1px solid #ccc; }
button { padding:12px 20px; border:none; border-radius:10px; background:#667eea; color:#fff; font-weight:600; cursor:pointer; }
button:disabled { opacity:.6; cursor:not-allowed; }
.rate-counter { font-size:12px; color:#666; margin-top:8px; text-align:center; }
</style>
</head>
<body>
<div class="chat-wrapper">
<div class="chat-header">Assistant IA (bobentaz)</div>
<div id="chat">
<div class="message bot">
<div class="message-bubble">Bonjour, comment puis‑je vous aider ?</div>
</div>
</div>
<div class="input-area">
<div id="limitPopup">Limite de 10 messages par minute atteinte. Veuillez réessayer plus tard.</div>
<form onsubmit="sendMsg();return false;">
<input type="hidden" id="csrf" value="<?= htmlspecialchars($_SESSION['csrf']) ?>">
<input id="userInput" type="text" placeholder="Votre message…" required>
<button id="sendBtn">Envoyer</button>
</form>
<div class="rate-counter">10 messages/minute</div>
</div>
</div>
<script>
const chat=document.getElementById('chat'),input=document.getElementById('userInput'),btn=document.getElementById('sendBtn'),csrf=document.getElementById('csrf').value,popup=document.getElementById('limitPopup');
function addMsg(text,isUser){const msg=document.createElement('div');msg.className='message '+(isUser?'user':'bot');const bubble=document.createElement('div');bubble.className='message-bubble';bubble.textContent=text;msg.appendChild(bubble);chat.appendChild(msg);chat.scrollTop=chat.scrollHeight;}
async function sendMsg(){const txt=input.value.trim();if(!txt)return;addMsg(txt,true);input.value='';btn.disabled=true;const res=await fetch('',{method:'POST',headers:{'Content-Type':'application/x-www-form-urlencoded','X-Requested-With':'XMLHttpRequest'},body:'message='+encodeURIComponent(txt)+'&csrf='+encodeURIComponent(csrf)});const data=await res.json();if(data.error==='LIMIT_REACHED'){popup.style.display='block';addMsg('Limite atteinte. Attendez quelques secondes.',false);btn.disabled=false;return;}popup.style.display='none';addMsg(data.response||'Erreur.',false);btn.disabled=false;}
</script>
</body>
</html