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- <?php
- namespace OC;
- use OCP\HintException;
- class Config {
- public const ENV_PREFIX = 'NC_';
-
- protected $cache = [];
-
- protected $envCache = [];
-
- protected $configDir;
-
- protected $configFilePath;
-
- protected $configFileName;
-
- protected $isReadOnly;
-
- public function __construct($configDir, $fileName = 'config.php') {
- $this->configDir = $configDir;
- $this->configFilePath = $this->configDir.$fileName;
- $this->configFileName = $fileName;
- $this->readData();
- $this->isReadOnly = $this->getValue('config_is_read_only', false);
- }
-
- public function getKeys() {
- return array_keys($this->cache);
- }
-
- public function getValue($key, $default = null) {
- $envKey = self::ENV_PREFIX . $key;
- if (isset($this->envCache[$envKey])) {
- return $this->envCache[$envKey];
- }
- if (isset($this->cache[$key])) {
- return $this->cache[$key];
- }
- return $default;
- }
-
- public function setValues(array $configs) {
- $needsUpdate = false;
- foreach ($configs as $key => $value) {
- if ($value !== null) {
- $needsUpdate |= $this->set($key, $value);
- } else {
- $needsUpdate |= $this->delete($key);
- }
- }
- if ($needsUpdate) {
-
- $this->writeData();
- }
- }
-
- public function setValue($key, $value) {
- if ($this->set($key, $value)) {
-
- $this->writeData();
- }
- }
-
- protected function set($key, $value) {
- $this->checkReadOnly();
- if (!isset($this->cache[$key]) || $this->cache[$key] !== $value) {
-
- $this->cache[$key] = $value;
- return true;
- }
- return false;
- }
-
- public function deleteKey($key) {
- if ($this->delete($key)) {
-
- $this->writeData();
- }
- }
-
- protected function delete($key) {
- $this->checkReadOnly();
- if (isset($this->cache[$key])) {
-
- unset($this->cache[$key]);
- return true;
- }
- return false;
- }
-
- private function readData() {
-
- $configFiles = [$this->configFilePath];
-
- $extra = glob($this->configDir.'*.'.$this->configFileName);
- if (is_array($extra)) {
- natsort($extra);
- $configFiles = array_merge($configFiles, $extra);
- }
-
- foreach ($configFiles as $file) {
- $fileExistsAndIsReadable = file_exists($file) && is_readable($file);
- $filePointer = $fileExistsAndIsReadable ? fopen($file, 'r') : false;
- if ($file === $this->configFilePath &&
- $filePointer === false) {
-
-
- continue;
- }
-
- if (!flock($filePointer, LOCK_SH)) {
- throw new \Exception(sprintf('Could not acquire a shared lock on the config file %s', $file));
- }
- unset($CONFIG);
- include $file;
- if (!defined('PHPUNIT_RUN') && headers_sent()) {
-
- $errorMessage = sprintf('Config file has leading content, please remove everything before "<?php" in %s', basename($file));
- if (!defined('OC_CONSOLE')) {
- print(\OCP\Util::sanitizeHTML($errorMessage));
- }
- throw new \Exception($errorMessage);
- }
- if (isset($CONFIG) && is_array($CONFIG)) {
- $this->cache = array_merge($this->cache, $CONFIG);
- }
-
- flock($filePointer, LOCK_UN);
- fclose($filePointer);
- }
- $this->envCache = getenv();
- }
-
- private function writeData() {
- $this->checkReadOnly();
- if (!is_file(\OC::$configDir.'/CAN_INSTALL') && !isset($this->cache['version'])) {
- throw new HintException(sprintf('Configuration was not read or initialized correctly, not overwriting %s', $this->configFilePath));
- }
-
- $content = "<?php\n";
- $content .= '$CONFIG = ';
- $content .= var_export($this->cache, true);
- $content .= ";\n";
- touch($this->configFilePath);
- $filePointer = fopen($this->configFilePath, 'r+');
-
- chmod($this->configFilePath, 0640);
-
- if (!is_resource($filePointer)) {
- throw new HintException(
- "Can't write into config directory!",
- 'This can usually be fixed by giving the webserver write access to the config directory.');
- }
-
- if (function_exists('disk_free_space')) {
- $df = disk_free_space($this->configDir);
- $size = strlen($content) + 10240;
- if ($df !== false && $df < (float)$size) {
- throw new \Exception($this->configDir . " does not have enough space for writing the config file! Not writing it back!");
- }
- }
-
- if (!flock($filePointer, LOCK_EX)) {
- throw new \Exception(sprintf('Could not acquire an exclusive lock on the config file %s', $this->configFilePath));
- }
-
- ftruncate($filePointer, 0);
- fwrite($filePointer, $content);
- fflush($filePointer);
- flock($filePointer, LOCK_UN);
- fclose($filePointer);
- if (function_exists('opcache_invalidate')) {
- @opcache_invalidate($this->configFilePath, true);
- }
- }
-
- private function checkReadOnly(): void {
- if ($this->isReadOnly) {
- throw new HintException(
- 'Config is set to be read-only via option "config_is_read_only".',
- 'Unset "config_is_read_only" to allow changes to the config file.');
- }
- }
- }
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