download

2025-12-07 02:18:06 +01:00
parent 91abb8812b
commit 24c7c215ee
2 changed files with 471 additions and 0 deletions
--- a/download/emailtemplate_bridge.php
+++ b/download/emailtemplate_bridge.php
@@ -0,0 +1,163 @@
+<?php
+declare(strict_types=1);
+
+/**
+ * EmailTemplate Bridge – Schema-API für Quellsysteme.
+ *
+ * Diese Datei kann auf einer geschützten Quelle (z.B. Kundenserver) installiert werden.
+ * Sie liefert dem EmailTemplate-System Informationen über verfügbare Tabellen/Spalten,
+ * ohne direkten DB-Zugriff von außen zu erlauben.
+ *
+ * Sicherheit:
+ *  - Authentifizierung per statischem Token (per Header oder Query-Parameter).
+ *  - Optional können Host/IP-Checks ergänzt werden.
+ *
+ * Aktionen:
+ *  - action=schema (Default)  → Gibt Tabellen inkl. Spaltendefinition zurück.
+ *  - action=ping              → Kleiner Health-Check.
+ *
+ * Hinweise:
+ *  - DB-Daten können direkt unten eingetragen oder aus einer separaten Datei geladen werden.
+ *  - Der Token sollte für jede Installation eindeutig sein.
+ */
+
+$bridgeConfig = [
+    'token' => getenv('EMAILTEMPLATE_BRIDGE_TOKEN') ?: 'REPLACE_WITH_SHARED_TOKEN',
+    'db' => [
+        'dsn'  => getenv('EMAILTEMPLATE_BRIDGE_DSN') ?: 'mysql:host=127.0.0.1;dbname=example;charset=utf8mb4',
+        'user' => getenv('EMAILTEMPLATE_BRIDGE_DB_USER') ?: 'root',
+        'pass' => getenv('EMAILTEMPLATE_BRIDGE_DB_PASS') ?: '',
+        'options' => [
+            PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
+            PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC,
+        ],
+    ],
+];
+
+$localOverride = __DIR__ . '/emailtemplate.bridge.conf.php';
+if (is_file($localOverride)) {
+    $override = include $localOverride;
+    if (is_array($override)) {
+        $bridgeConfig = array_replace_recursive($bridgeConfig, $override);
+    }
+}
+
+function bridgeRespond($payload, int $status = 200): void
+{
+    http_response_code($status);
+    header('Content-Type: application/json; charset=utf-8');
+    header('Cache-Control: no-store, max-age=0');
+    echo json_encode($payload, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
+    exit;
+}
+
+function bridgeRequireToken(array $config): void
+{
+    $expected = (string)($config['token'] ?? '');
+    if ($expected === '') {
+        bridgeRespond(['ok' => false, 'error' => 'Bridge token not configured'], 500);
+    }
+
+    $provided = null;
+    if (!empty($_SERVER['HTTP_AUTHORIZATION']) && stripos($_SERVER['HTTP_AUTHORIZATION'], 'Bearer ') === 0) {
+        $provided = trim(substr($_SERVER['HTTP_AUTHORIZATION'], 7));
+    } elseif (!empty($_SERVER['HTTP_X_EMAILTEMPLATE_TOKEN'])) {
+        $provided = trim($_SERVER['HTTP_X_EMAILTEMPLATE_TOKEN']);
+    } elseif (isset($_GET['token'])) {
+        $provided = (string)$_GET['token'];
+    } elseif (isset($_POST['token'])) {
+        $provided = (string)$_POST['token'];
+    }
+
+    if (!$provided || !hash_equals($expected, $provided)) {
+        bridgeRespond(['ok' => false, 'error' => 'Unauthorized'], 403);
+    }
+}
+
+function bridgeDb(array $config): PDO
+{
+    static $pdo = null;
+    if ($pdo instanceof PDO) {
+        return $pdo;
+    }
+
+    try {
+        $pdo = new PDO(
+            $config['db']['dsn'],
+            $config['db']['user'],
+            $config['db']['pass'],
+            $config['db']['options']
+        );
+    } catch (Throwable $e) {
+        bridgeRespond(['ok' => false, 'error' => 'DB connection failed', 'detail' => $e->getMessage()], 500);
+    }
+
+    return $pdo;
+}
+
+bridgeRequireToken($bridgeConfig);
+
+$action = strtolower((string)($_GET['action'] ?? $_POST['action'] ?? 'schema'));
+
+if ($action === 'ping') {
+    bridgeRespond(['ok' => true, 'time' => date(DATE_ATOM)]);
+}
+
+if ($action !== 'schema') {
+    bridgeRespond(['ok' => false, 'error' => 'Unknown action'], 404);
+}
+
+$pdo = bridgeDb($bridgeConfig);
+
+try {
+    $dbName = '';
+    if (preg_match('/dbname=([^;]+)/i', $bridgeConfig['db']['dsn'], $m)) {
+        $dbName = $m[1];
+    }
+
+    $tablesStmt = $pdo->query('SHOW FULL TABLES');
+    $tables = [];
+    while ($row = $tablesStmt->fetch(PDO::FETCH_NUM)) {
+        $tableName = $row[0];
+        if ($tableName === null) {
+            continue;
+        }
+
+        $columnsStmt = $pdo->prepare(
+            'SELECT COLUMN_NAME, DATA_TYPE, IS_NULLABLE, COLUMN_DEFAULT, COLUMN_KEY, EXTRA
+             FROM INFORMATION_SCHEMA.COLUMNS
+             WHERE TABLE_SCHEMA = :schema AND TABLE_NAME = :table
+             ORDER BY ORDINAL_POSITION'
+        );
+        $columnsStmt->execute([
+            ':schema' => $dbName ?: $pdo->query('SELECT DATABASE()')->fetchColumn(),
+            ':table'  => $tableName,
+        ]);
+
+        $columns = [];
+        foreach ($columnsStmt as $col) {
+            $columns[] = [
+                'name'       => $col['COLUMN_NAME'],
+                'type'       => $col['DATA_TYPE'],
+                'nullable'   => ($col['IS_NULLABLE'] === 'YES'),
+                'default'    => $col['COLUMN_DEFAULT'],
+                'key'        => $col['COLUMN_KEY'],
+                'extra'      => $col['EXTRA'],
+                'placeholder'=> strtoupper($tableName) . '__' . strtoupper($col['COLUMN_NAME']),
+            ];
+        }
+
+        $tables[] = [
+            'name'    => $tableName,
+            'columns' => $columns,
+        ];
+    }
+
+    bridgeRespond([
+        'ok'      => true,
+        'tables'  => $tables,
+        'fetched' => date(DATE_ATOM),
+    ]);
+} catch (Throwable $e) {
+    bridgeRespond(['ok' => false, 'error' => 'Schema fetch failed', 'detail' => $e->getMessage()], 500);
+}