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Add independent WebDAV source index

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Terranom674
2026-09-03 17:43:46 +02:00
parent 43178483e5
commit ac6353b050
1 changed files with 136 additions and 0 deletions
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136
include/webdav_source_index.inc.php Normal file
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<?php
if (!defined('PHPWG_ROOT_PATH'))
{
die('Hacking attempt!');
}
function bratonien_tools_webdav_source_index_file($connection_id)
{
return PHPWG_ROOT_PATH.PWG_LOCAL_DIR.'bratonien-webdav-source-index.connection-'.(int)$connection_id.'.json';
}
function bratonien_tools_webdav_source_index_empty($connection_id)
{
return array(
'schema_version'=>1,
'connection_id'=>(int)$connection_id,
'updated_at'=>0,
'last_periodic_at'=>0,
'sources'=>array(),
);
}
function bratonien_tools_webdav_source_index_load($connection_id)
{
$file = bratonien_tools_webdav_source_index_file($connection_id);
if (!is_file($file) || !is_readable($file)) return null;
$raw = @file_get_contents($file);
$index = $raw !== false ? json_decode($raw, true) : null;
if (!is_array($index)) return null;
$base = bratonien_tools_webdav_source_index_empty($connection_id);
$index = array_merge($base, $index);
if (!isset($index['sources']) || !is_array($index['sources'])) $index['sources'] = array();
$index['connection_id'] = (int)$connection_id;
return $index;
}
function bratonien_tools_webdav_source_index_save($connection_id, array $index)
{
$file = bratonien_tools_webdav_source_index_file($connection_id);
$directory = dirname($file);
if (!is_dir($directory) && !@mkdir($directory, 0775, true) && !is_dir($directory))
{
throw new RuntimeException('WebDAV-Quellenindex-Verzeichnis konnte nicht angelegt werden.');
}
$index['schema_version'] = 1;
$index['connection_id'] = (int)$connection_id;
$index['updated_at'] = time();
if (!isset($index['sources']) || !is_array($index['sources'])) $index['sources'] = array();
ksort($index['sources'], SORT_STRING);
$json = json_encode($index, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES | JSON_PRETTY_PRINT);
if ($json === false) throw new RuntimeException('WebDAV-Quellenindex konnte nicht serialisiert werden.');
$tmp = $file.'.tmp-'.bin2hex(random_bytes(4));
if (@file_put_contents($tmp, $json."\n", LOCK_EX) === false)
{
throw new RuntimeException('WebDAV-Quellenindex konnte nicht geschrieben werden.');
}
@chmod($tmp, 0664);
if (!@rename($tmp, $file))
{
@unlink($tmp);
throw new RuntimeException('WebDAV-Quellenindex konnte nicht atomar gespeichert werden.');
}
}
function bratonien_tools_webdav_source_index_key(array $source)
{
$connection_id = (int)($source['connection_id'] ?? 0);
$fileid = (int)($source['fileid'] ?? 0);
if ($fileid > 0)
{
return 'c'.$connection_id.':f'.$fileid;
}
$root_fileid = (int)($source['root_fileid'] ?? 0);
$path = trim((string)($source['webdav_path'] ?? ''), '/');
return 'c'.$connection_id.':r'.$root_fileid.':p'.sha1($path);
}
function bratonien_tools_webdav_source_index_signature(array $source)
{
return sha1(implode('|', array(
(int)($source['connection_id'] ?? 0),
(int)($source['root_fileid'] ?? 0),
(int)($source['fileid'] ?? 0),
trim((string)($source['webdav_path'] ?? ''), '/'),
(string)($source['etag'] ?? ''),
(int)($source['size'] ?? 0),
strtolower((string)($source['content_type'] ?? $source['mime'] ?? '')),
(int)($source['width'] ?? 0),
(int)($source['height'] ?? 0),
)));
}
function bratonien_tools_webdav_source_index_metadata(array $source, $image_id)
{
$path = trim((string)($source['webdav_path'] ?? ''), '/');
return array(
'image_id'=>(int)$image_id,
'fileid'=>(int)($source['fileid'] ?? 0),
'root_fileid'=>(int)($source['root_fileid'] ?? 0),
'webdav_path'=>$path,
'name'=>basename($path),
'etag'=>(string)($source['etag'] ?? ''),
'size'=>(int)($source['size'] ?? 0),
'content_type'=>(string)($source['content_type'] ?? $source['mime'] ?? ''),
'width'=>(int)($source['width'] ?? 0),
'height'=>(int)($source['height'] ?? 0),
'source_signature'=>bratonien_tools_webdav_source_index_signature($source),
'last_seen_at'=>time(),
);
}
function bratonien_tools_webdav_source_index_is_current(array $entry, $signature)
{
return isset($entry['source_signature']) && hash_equals((string)$entry['source_signature'], (string)$signature);
}
function bratonien_tools_webdav_source_index_prune(array &$index, array $current_keys)
{
$keep = array_fill_keys($current_keys, true);
$removed = 0;
foreach (array_keys((array)$index['sources']) as $key)
{
if (!isset($keep[$key]))
{
unset($index['sources'][$key]);
$removed++;
}
}
return $removed;
}