From 0eb2ca264129963d007adf62c34b22ea90ddf62b Mon Sep 17 00:00:00 2001
From: Terranom674 <thomas_dannenberg@web.de>
Date: Mon, 17 Aug 2026 10:29:08 +0200
Subject: [PATCH] Add NC Connector legacy migration helper

---
 nc-connector-migrate.php | 133 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 133 insertions(+)
 create mode 100644 nc-connector-migrate.php

diff --git a/nc-connector-migrate.php b/nc-connector-migrate.php
new file mode 100644
index 0000000..83aaf52
--- /dev/null
+++ b/nc-connector-migrate.php
@@ -0,0 +1,133 @@
+#!/usr/bin/env php
+<?php
+if (PHP_SAPI !== 'cli')
+{
+  fwrite(STDERR, "Dieses Hilfsprogramm darf nur auf der Kommandozeile ausgefuehrt werden.\n");
+  exit(1);
+}
+
+if (function_exists('posix_geteuid') && posix_geteuid() !== 0)
+{
+  fwrite(STDERR, "Bitte als root ausfuehren.\n");
+  exit(1);
+}
+
+$configPath = '/etc/piwigo-sync/piwigo.conf';
+$storagePath = '/etc/piwigo-sync/storages.tsv';
+$bundlePath = '/tmp/bratonien-tools-nc-import.json';
+
+function readLegacyConfig($path)
+{
+  if (!is_readable($path))
+  {
+    throw new RuntimeException('Legacy-Konfiguration nicht lesbar: '.$path);
+  }
+
+  $config = array();
+  foreach (file($path, FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES) as $line)
+  {
+    $line = trim($line);
+    if ($line === '' || $line[0] === '#')
+    {
+      continue;
+    }
+    if (!preg_match('/^([A-Z0-9_]+)=(.*)$/', $line, $matches))
+    {
+      continue;
+    }
+    $value = trim($matches[2]);
+    if (strlen($value) >= 2)
+    {
+      $first = $value[0];
+      $last = $value[strlen($value)-1];
+      if (($first === '"' && $last === '"') || ($first === "'" && $last === "'"))
+      {
+        $value = substr($value, 1, -1);
+      }
+    }
+    $config[$matches[1]] = $value;
+  }
+
+  return $config;
+}
+
+function readStorages($path)
+{
+  $storages = array();
+  if (!is_readable($path))
+  {
+    return $storages;
+  }
+
+  foreach (file($path, FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES) as $line)
+  {
+    if ($line === '' || $line[0] === '#')
+    {
+      continue;
+    }
+    $parts = explode("\t", $line);
+    if (count($parts) !== 3)
+    {
+      continue;
+    }
+    $storages[] = array(
+      'storage_id' => $parts[0],
+      'source_prefix' => $parts[1],
+      'local_mount' => $parts[2],
+    );
+  }
+
+  return $storages;
+}
+
+try
+{
+  $config = readLegacyConfig($configPath);
+  $passwordPath = isset($config['NC_DB_PASSWORD_FILE']) ? $config['NC_DB_PASSWORD_FILE'] : '/etc/piwigo-sync/nextcloud-db-password';
+  if (!is_readable($passwordPath))
+  {
+    throw new RuntimeException('Nextcloud-Datenbankpasswort nicht lesbar: '.$passwordPath);
+  }
+
+  $password = trim((string)file_get_contents($passwordPath));
+  if ($password === '')
+  {
+    throw new RuntimeException('Nextcloud-Datenbankpasswort ist leer.');
+  }
+
+  $bundle = array(
+    'format' => 1,
+    'created_at' => gmdate('c'),
+    'config' => $config,
+    'db_password' => $password,
+    'storages' => readStorages($storagePath),
+  );
+
+  $json = json_encode($bundle, JSON_PRETTY_PRINT | JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
+  if (!is_string($json))
+  {
+    throw new RuntimeException('Migrationspaket konnte nicht erzeugt werden.');
+  }
+
+  if (file_put_contents($bundlePath, $json."\n", LOCK_EX) === false)
+  {
+    throw new RuntimeException('Migrationspaket konnte nicht geschrieben werden: '.$bundlePath);
+  }
+
+  @chmod($bundlePath, 0600);
+  if (!@chown($bundlePath, 'www-data'))
+  {
+    @unlink($bundlePath);
+    throw new RuntimeException('Migrationspaket konnte nicht sicher an www-data uebergeben werden.');
+  }
+  @chgrp($bundlePath, 'www-data');
+
+  echo "Migrationspaket wurde bereitgestellt.\n";
+  echo "Jetzt in Piwigo -> Bratonien Tools -> NC Connector wechseln und 'Bestehende Verbindung importieren' ausfuehren.\n";
+  echo "Der laufende piwigo-sync wurde nicht veraendert oder gestoppt.\n";
+}
+catch (Throwable $e)
+{
+  fwrite(STDERR, 'Fehler: '.$e->getMessage()."\n");
+  exit(1);
+}