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phorge/src/applications/phame/skins/PhameSkinSpecification.php
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PhameSkinSpecification.php
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<?php
final class PhameSkinSpecification {
const TYPE_ADVANCED = 'advanced';
const TYPE_BASIC = 'basic';
private $type;
private $rootDirectory;
private $skinClass;
private $phutilLibraries = array();
private $name;
private $config;
public static function loadAllSkinSpecifications() {
static $specs;
if ($specs === null) {
$paths = PhabricatorEnv::getEnvConfig('phame.skins');
$base = dirname(phutil_get_library_root('phabricator'));
$specs = array();
foreach ($paths as $path) {
$path = Filesystem::resolvePath($path, $base);
foreach (Filesystem::listDirectory($path) as $skin_directory) {
$skin_path = $path.DIRECTORY_SEPARATOR.$skin_directory;
if (!is_dir($skin_path)) {
continue;
}
$spec = self::loadSkinSpecification($skin_path);
if (!$spec) {
continue;
}
$name = trim($skin_directory, DIRECTORY_SEPARATOR);
$spec->setName($name);
if (isset($specs[$name])) {
$that_dir = $specs[$name]->getRootDirectory();
$this_dir = $spec->getRootDirectory();
throw new Exception(
pht(
"Two skins have the same name ('%s'), in '%s' and '%s'. ".
"Rename one or adjust your '%s' configuration.",
$name,
$this_dir,
$that_dir,
'phame.skins'));
}
$specs[$name] = $spec;
}
}
}
return $specs;
}
public static function loadOneSkinSpecification($name) {
// Only allow skins which we know to exist to load. This prevents loading
// skins like "../../secrets/evil/".
$all = self::loadAllSkinSpecifications();
if (empty($all[$name])) {
throw new Exception(
pht(
'Blog skin "%s" is not a valid skin!',
$name));
}
$paths = PhabricatorEnv::getEnvConfig('phame.skins');
$base = dirname(phutil_get_library_root('phabricator'));
foreach ($paths as $path) {
$path = Filesystem::resolvePath($path, $base);
$skin_path = $path.DIRECTORY_SEPARATOR.$name;
if (is_dir($skin_path)) {
// Double check that the skin really lives in the skin directory.
if (!Filesystem::isDescendant($skin_path, $path)) {
throw new Exception(
pht(
'Blog skin "%s" is not located in path "%s"!',
$name,
$path));
}
$spec = self::loadSkinSpecification($skin_path);
if ($spec) {
$spec->setName($name);
return $spec;
}
}
}
return null;
}
private static function loadSkinSpecification($path) {
$config_path = $path.DIRECTORY_SEPARATOR.'skin.json';
$config = array();
if (Filesystem::pathExists($config_path)) {
$config = Filesystem::readFile($config_path);
try {
$config = phutil_json_decode($config);
} catch (PhutilJSONParserException $ex) {
throw new PhutilProxyException(
pht(
"Skin configuration file '%s' is not a valid JSON file.",
$config_path),
$ex);
}
$type = idx($config, 'type', self::TYPE_BASIC);
} else {
$type = self::TYPE_BASIC;
}
$spec = new PhameSkinSpecification();
$spec->setRootDirectory($path);
$spec->setConfig($config);
switch ($type) {
case self::TYPE_BASIC:
$spec->setSkinClass('PhameBasicTemplateBlogSkin');
break;
case self::TYPE_ADVANCED:
$spec->setSkinClass($config['class']);
$spec->addPhutilLibrary($path.DIRECTORY_SEPARATOR.'src');
break;
default:
throw new Exception(pht('Unknown skin type!'));
}
$spec->setType($type);
return $spec;
}
public function setConfig(array $config) {
$this->config = $config;
return $this;
}
public function getConfig($key, $default = null) {
return idx($this->config, $key, $default);
}
public function setName($name) {
$this->name = $name;
return $this;
}
public function getName() {
return $this->getConfig('name', $this->name);
}
public function setRootDirectory($root_directory) {
$this->rootDirectory = $root_directory;
return $this;
}
public function getRootDirectory() {
return $this->rootDirectory;
}
public function setType($type) {
$this->type = $type;
return $this;
}
public function getType() {
return $this->type;
}
public function setSkinClass($skin_class) {
$this->skinClass = $skin_class;
return $this;
}
public function getSkinClass() {
return $this->skinClass;
}
public function addPhutilLibrary($library) {
$this->phutilLibraries[] = $library;
return $this;
}
public function buildSkin(AphrontRequest $request) {
foreach ($this->phutilLibraries as $library) {
phutil_load_library($library);
}
return newv($this->getSkinClass(), array($request, $this));
}
}

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