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- <?php
- defined('GNUSOCIAL') || die();
- class Theme
- {
- const FALLBACK = 'neo';
- public $name = null;
- public $dir = null;
- public $path = null;
- protected $metadata = null;
- protected $externals = null;
- protected $deps = null;
-
- public function __construct($name = null)
- {
- if (empty($name)) {
- $name = common_config('site', 'theme');
- }
- if (!self::validName($name)) {
-
- throw new ServerException(_('Invalid theme name.'));
- }
- $this->name = $name;
-
- $localroot = self::localRoot();
- $fulldir = $localroot.'/'.$name;
- if (file_exists($fulldir) && is_dir($fulldir)) {
- $this->dir = $fulldir;
- $this->path = $this->relativeThemePath('local', 'local', 'theme/' . $name);
- return;
- }
-
- $instroot = self::installRoot();
- $fulldir = $instroot.'/'.$name;
- if (file_exists($fulldir) && is_dir($fulldir)) {
- $this->dir = $fulldir;
- $this->path = $this->relativeThemePath('theme', 'theme', $name);
- return;
- }
-
- common_log(LOG_WARNING, sprintf(
- 'Unable to find theme \'%s\', falling back to default theme \'%s\'',
- $name,
- Theme::FALLBACK
- ));
- $this->name = Theme::FALLBACK;
- $this->dir = $instroot.'/'.Theme::FALLBACK;
- $this->path = $this->relativeThemePath('theme', 'theme', Theme::FALLBACK);
- }
-
- protected function relativeThemePath($group, $fallbackSubdir, $name)
- {
- if (GNUsocial::isHTTPS()) {
- $sslserver = common_config($group, 'sslserver');
- if (empty($sslserver)) {
- $sslserver = common_config('site', 'sslserver');
- if (is_string($sslserver) && strlen($sslserver) > 0) {
- $server = $sslserver;
- } elseif (!empty(common_config('site', 'server'))) {
- $server = common_config('site', 'server');
- }
- $path = common_config('site', 'path') . '/';
- if ($fallbackSubdir) {
- $path .= $fallbackSubdir . '/';
- }
- } else {
- $server = $sslserver;
- $path = common_config($group, 'sslpath');
- if (empty($path)) {
- $path = common_config($group, 'path');
- }
- }
- $protocol = 'https';
- } else {
- $path = common_config($group, 'path');
- if (empty($path)) {
- $path = common_config('site', 'path') . '/';
- if ($fallbackSubdir) {
- $path .= $fallbackSubdir . '/';
- }
- }
- $server = common_config($group, 'server');
- if (empty($server)) {
- $server = common_config('site', 'server');
- }
- $protocol = 'http';
- }
- if ($path[strlen($path)-1] != '/') {
- $path .= '/';
- }
- if ($path[0] != '/') {
- $path = '/'.$path;
- }
- return $protocol.'://'.$server.$path.$name;
- }
-
- public function getFile($relative)
- {
- return $this->dir.'/'.$relative;
- }
-
- public function getPath($relative)
- {
- return $this->path.'/'.$relative;
- }
-
- public function getDeps()
- {
- if ($this->deps === null) {
- $chain = $this->doGetDeps(array($this->name));
- array_pop($chain);
- $this->deps = $chain;
- }
- return $this->deps;
- }
- protected function doGetDeps($chain)
- {
- $data = $this->getMetadata();
- if (!empty($data['include'])) {
- $include = $data['include'];
-
- if (!in_array($include, $chain)) {
- try {
- $theme = new Theme($include);
- array_unshift($chain, $include);
- return $theme->doGetDeps($chain);
- } catch (Exception $e) {
- common_log(
- LOG_ERR,
- 'Exception while fetching theme dependencies '
- . "for {$this->name}: {$e->getMessage()}"
- );
- }
- }
- }
- return $chain;
- }
-
- public function getMetadata()
- {
- if (is_null($this->metadata)) {
- $this->metadata = $this->doGetMetadata();
- }
- return $this->metadata;
- }
-
- private function doGetMetadata()
- {
- $iniFile = $this->getFile('theme.ini');
- if (file_exists($iniFile)) {
- return parse_ini_file($iniFile);
- } else {
- return [];
- }
- }
-
- public function getExternals()
- {
- if (is_null($this->externals)) {
- $data = $this->getMetadata();
- if (!empty($data['external'])) {
- $ext = (array)$data['external'];
- } else {
- $ext = array();
- }
- if (!empty($data['include'])) {
- $theme = new Theme($data['include']);
- $ext = array_merge($ext, $theme->getExternals());
- }
- $this->externals = array_unique($ext);
- }
- return $this->externals;
- }
-
- public static function file($relative, $name = null)
- {
- $theme = new Theme($name);
- return $theme->getFile($relative);
- }
-
- public static function path($relative, $name = null)
- {
- $theme = new Theme($name);
- return $theme->getPath($relative);
- }
-
- public static function listAvailable()
- {
- $local = self::subdirsOf(self::localRoot());
- $install = self::subdirsOf(self::installRoot());
- $i = array_search('base', $install);
- unset($install[$i]);
- return array_merge($local, $install);
- }
-
- protected static function subdirsOf($dir)
- {
- $subdirs = array();
- if (is_dir($dir)) {
- if (($dh = opendir($dir)) !== false) {
- while (($filename = readdir($dh)) !== false) {
- if ($filename != '..' && $filename !== '.' &&
- is_dir($dir.'/'.$filename)) {
- $subdirs[] = $filename;
- }
- }
- closedir($dh);
- }
- }
- return $subdirs;
- }
-
- protected static function localRoot()
- {
- $basedir = common_config('local', 'dir');
- if (empty($basedir)) {
- $basedir = PUBLICDIR . '/local';
- }
- return $basedir . '/theme';
- }
-
- protected static function installRoot()
- {
- $instroot = common_config('theme', 'dir');
- if (empty($instroot)) {
- $instroot = PUBLICDIR.'/theme';
- }
- return $instroot;
- }
- public static function validName($name)
- {
- return preg_match('/^[a-z0-9][a-z0-9_-]*$/i', $name);
- }
- }
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