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CRAP | |
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metadata_manager | |
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__construct | |
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get_metadata | |
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fetch_metadata_from_file | |
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sanitize_json | |
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validate | |
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validate_enable | |
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<?php | |
/** | |
* | |
* This file is part of the phpBB Forum Software package. | |
* | |
* @copyright (c) phpBB Limited <https://www.phpbb.com> | |
* @license GNU General Public License, version 2 (GPL-2.0) | |
* | |
* For full copyright and license information, please see | |
* the docs/CREDITS.txt file. | |
* | |
*/ | |
namespace phpbb\extension; | |
/** | |
* The extension metadata manager validates and gets meta-data for extensions | |
*/ | |
class metadata_manager | |
{ | |
/** | |
* Name (including vendor) of the extension | |
* @var string | |
*/ | |
protected $ext_name; | |
/** | |
* Metadata from the composer.json file | |
* @var array | |
*/ | |
protected $metadata; | |
/** | |
* Link (including root path) to the metadata file | |
* @var string | |
*/ | |
protected $metadata_file; | |
/** | |
* Creates the metadata manager | |
* | |
* @param string $ext_name Name (including vendor) of the extension | |
* @param string $ext_path Path to the extension directory including root path | |
*/ | |
public function __construct($ext_name, $ext_path) | |
{ | |
$this->ext_name = $ext_name; | |
$this->metadata = array(); | |
$this->metadata_file = $ext_path . 'composer.json'; | |
} | |
/** | |
* Processes and gets the metadata requested | |
* | |
* @param string $element All for all metadata that it has and is valid, otherwise specify which section you want by its shorthand term. | |
* @return array Contains all of the requested metadata, throws an exception on failure | |
*/ | |
public function get_metadata($element = 'all') | |
{ | |
// Fetch and clean the metadata if not done yet | |
if ($this->metadata === array()) | |
{ | |
$this->fetch_metadata_from_file(); | |
} | |
switch ($element) | |
{ | |
case 'all': | |
default: | |
$this->validate(); | |
return $this->metadata; | |
break; | |
case 'version': | |
case 'name': | |
$this->validate($element); | |
return $this->metadata[$element]; | |
break; | |
case 'display-name': | |
return (isset($this->metadata['extra']['display-name'])) ? $this->metadata['extra']['display-name'] : $this->get_metadata('name'); | |
break; | |
} | |
} | |
/** | |
* Gets the metadata file contents and cleans loaded file | |
* | |
* @throws \phpbb\extension\exception | |
*/ | |
private function fetch_metadata_from_file() | |
{ | |
if (!file_exists($this->metadata_file)) | |
{ | |
throw new \phpbb\extension\exception('FILE_NOT_FOUND', array($this->metadata_file)); | |
} | |
if (!($file_contents = file_get_contents($this->metadata_file))) | |
{ | |
throw new \phpbb\extension\exception('FILE_CONTENT_ERR', array($this->metadata_file)); | |
} | |
if (($metadata = json_decode($file_contents, true)) === null) | |
{ | |
throw new \phpbb\extension\exception('FILE_JSON_DECODE_ERR', array($this->metadata_file)); | |
} | |
array_walk_recursive($metadata, array($this, 'sanitize_json')); | |
$this->metadata = $metadata; | |
} | |
/** | |
* Sanitize input from JSON array using htmlspecialchars() | |
* | |
* @param mixed $value Value of array row | |
* @param string $key Key of array row | |
*/ | |
public function sanitize_json(&$value, $key) | |
{ | |
$value = htmlspecialchars($value, ENT_COMPAT); | |
} | |
/** | |
* Validate fields | |
* | |
* @param string $name ("all" for display and enable validation | |
* "display" for name, type, and authors | |
* "name", "type") | |
* @return Bool True if valid, throws an exception if invalid | |
* @throws \phpbb\extension\exception | |
*/ | |
public function validate($name = 'display') | |
{ | |
// Basic fields | |
$fields = array( | |
'name' => '#^[a-zA-Z0-9_\x7f-\xff]{2,}/[a-zA-Z0-9_\x7f-\xff]{2,}$#', | |
'type' => '#^phpbb-extension$#', | |
'license' => '#.+#', | |
'version' => '#.+#', | |
); | |
switch ($name) | |
{ | |
case 'all': | |
$this->validate_enable(); | |
// no break | |
case 'display': | |
foreach ($fields as $field => $data) | |
{ | |
$this->validate($field); | |
} | |
$this->validate_authors(); | |
break; | |
default: | |
if (isset($fields[$name])) | |
{ | |
if (!isset($this->metadata[$name])) | |
{ | |
throw new \phpbb\extension\exception('META_FIELD_NOT_SET', array($name)); | |
} | |
if (!preg_match($fields[$name], $this->metadata[$name])) | |
{ | |
throw new \phpbb\extension\exception('META_FIELD_INVALID', array($name)); | |
} | |
} | |
break; | |
} | |
return true; | |
} | |
/** | |
* Validates the contents of the authors field | |
* | |
* @return boolean True when passes validation, throws exception if invalid | |
* @throws \phpbb\extension\exception | |
*/ | |
public function validate_authors() | |
{ | |
if (empty($this->metadata['authors'])) | |
{ | |
throw new \phpbb\extension\exception('META_FIELD_NOT_SET', array('authors')); | |
} | |
foreach ($this->metadata['authors'] as $author) | |
{ | |
if (!isset($author['name'])) | |
{ | |
throw new \phpbb\extension\exception('META_FIELD_NOT_SET', array('author name')); | |
} | |
} | |
return true; | |
} | |
/** | |
* This array handles the verification that this extension can be enabled on this board | |
* | |
* @return bool True if validation succeeded, throws an exception if invalid | |
* @throws \phpbb\extension\exception | |
*/ | |
public function validate_enable() | |
{ | |
// Check for valid directory & phpBB, PHP versions | |
return $this->validate_dir() && $this->validate_require_phpbb() && $this->validate_require_php(); | |
} | |
/** | |
* Validates the most basic directory structure to ensure it follows <vendor>/<ext> convention. | |
* | |
* @return boolean True when passes validation, throws an exception if invalid | |
* @throws \phpbb\extension\exception | |
*/ | |
public function validate_dir() | |
{ | |
if (substr_count($this->ext_name, '/') !== 1 || $this->ext_name != $this->get_metadata('name')) | |
{ | |
throw new \phpbb\extension\exception('EXTENSION_DIR_INVALID'); | |
} | |
return true; | |
} | |
/** | |
* Validates the contents of the phpbb requirement field | |
* | |
* @return boolean True when passes validation, throws an exception if invalid | |
* @throws \phpbb\extension\exception | |
*/ | |
public function validate_require_phpbb() | |
{ | |
if (!isset($this->metadata['extra']['soft-require']['phpbb/phpbb'])) | |
{ | |
throw new \phpbb\extension\exception('META_FIELD_NOT_SET', array('soft-require')); | |
} | |
return true; | |
} | |
/** | |
* Validates the contents of the php requirement field | |
* | |
* @return boolean True when passes validation, throws an exception if invalid | |
* @throws \phpbb\extension\exception | |
*/ | |
public function validate_require_php() | |
{ | |
if (!isset($this->metadata['require']['php'])) | |
{ | |
throw new \phpbb\extension\exception('META_FIELD_NOT_SET', array('require php')); | |
} | |
return true; | |
} | |
} |