icingaweb2/library/Icinga/Application/ApplicationBootstrap.php

654 lines
15 KiB
PHP

<?php
/* Icinga Web 2 | (c) 2013-2015 Icinga Development Team | GPLv2+ */
namespace Icinga\Application;
use ErrorException;
use Exception;
use LogicException;
use Icinga\Application\Modules\Manager as ModuleManager;
use Icinga\Data\ConfigObject;
use Icinga\Data\ResourceFactory;
use Icinga\Exception\ConfigurationError;
use Icinga\Exception\NotReadableError;
use Icinga\Application\Logger;
use Icinga\Util\DateTimeFactory;
use Icinga\Util\Translator;
use Icinga\Exception\IcingaException;
/**
* This class bootstraps a thin Icinga application layer
*
* Usage example for CLI:
* <code>
* use Icinga\Application\Cli;
* Cli::start();
* </code>
*
* Usage example for Icinga Web application:
* <code>
* use Icinga\Application\Web;
* Web::start()->dispatch();
* </code>
*
* Usage example for Icinga-Web 1.x compatibility mode:
* <code>
* use Icinga\Application\LegacyWeb;
* LegacyWeb::start()->setIcingaWebBasedir(ICINGAWEB_BASEDIR)->dispatch();
* </code>
*/
abstract class ApplicationBootstrap
{
/**
* Base directory
*
* Parent folder for at least application, bin, modules, library/vendor and public
*
* @var string
*/
protected $baseDir;
/**
* Application directory
*
* @var string
*/
protected $appDir;
/**
* Vendor library directory
*
* @var string
*/
protected $vendorDir;
/**
* Library directory
*
* @var string
*/
protected $libDir;
/**
* Configuration directory
*
* @var string
*/
protected $configDir;
/**
* Icinga auto loader
*
* @var Loader
*/
private $loader;
/**
* Config object
*
* @var Config
*/
protected $config;
/**
* Module manager
*
* @var ModuleManager
*/
private $moduleManager;
/**
* Flag indicates we're on cli environment
*
* @var bool
*/
protected $isCli = false;
/**
* Flag indicates we're on web environment
*
* @var bool
*/
protected $isWeb = false;
/**
* Whether Icinga Web 2 requires setup
*
* @var bool
*/
protected $requiresSetup = false;
/**
* Constructor
*
* @param string $baseDir Icinga Web 2 base directory
* @param string $configDir Path to Icinga Web 2's configuration files
*/
protected function __construct($baseDir = null, $configDir = null)
{
if ($baseDir === null) {
$baseDir = dirname($this->getBootstrapDirectory());
}
$this->baseDir = $baseDir;
$this->appDir = $baseDir . '/application';
$this->vendorDir = $baseDir . '/library/vendor';
$this->libDir = realpath(__DIR__ . '/../..');
if ($configDir === null) {
if (array_key_exists('ICINGAWEB_CONFIGDIR', $_SERVER)) {
$configDir = $_SERVER['ICINGAWEB_CONFIGDIR'];
} else {
$configDir = '/etc/icingaweb2';
}
}
$canonical = realpath($configDir);
$this->configDir = $canonical ? $canonical : $configDir;
$this->setupAutoloader();
set_include_path(
implode(
PATH_SEPARATOR,
array($this->vendorDir, get_include_path())
)
);
Benchmark::measure('Bootstrap, autoloader registered');
Icinga::setApp($this);
require_once dirname(__FILE__) . '/functions.php';
}
/**
* Bootstrap interface method for concrete bootstrap objects
*
* @return mixed
*/
abstract protected function bootstrap();
/**
* Getter for module manager
*
* @return ModuleManager
*/
public function getModuleManager()
{
return $this->moduleManager;
}
/**
* Getter for class loader
*
* @return Loader
*/
public function getLoader()
{
return $this->loader;
}
/**
* Getter for configuration object
*
* @return Config
*/
public function getConfig()
{
return $this->config;
}
/**
* Flag indicates we're on cli environment
*
* @return bool
*/
public function isCli()
{
return $this->isCli;
}
/**
* Flag indicates we're on web environment
*
* @return bool
*/
public function isWeb()
{
return $this->isWeb;
}
/**
* Helper to glue directories together
*
* @param string $dir
* @param string $subdir
*
* @return string
*/
private function getDirWithSubDir($dir, $subdir = null)
{
if ($subdir !== null) {
$dir .= '/' . ltrim($subdir, '/');
}
return $dir;
}
/**
* Get the base directory
*
* @param string $subDir Optional sub directory to get
*
* @return string
*/
public function getBaseDir($subDir = null)
{
return $this->getDirWithSubDir($this->baseDir, $subDir);
}
/**
* Get the application directory
*
* @param string $subDir Optional sub directory to get
*
* @return string
*/
public function getApplicationDir($subDir = null)
{
return $this->getDirWithSubDir($this->appDir, $subDir);
}
/**
* Get the vendor library directory
*
* @param string $subDir Optional sub directory to get
*
* @return string
*/
public function getVendorDir($subDir = null)
{
return $this->getDirWithSubDir($this->vendorDir, $subDir);
}
/**
* Get the configuration directory
*
* @param string $subDir Optional sub directory to get
*
* @return string
*/
public function getConfigDir($subDir = null)
{
return $this->getDirWithSubDir($this->configDir, $subDir);
}
/**
* Get the Icinga library directory
*
* @param string $subDir Optional sub directory to get
*
* @return string
*/
public function getLibraryDir($subDir = null)
{
return $this->getDirWithSubDir($this->libDir, $subDir);
}
/**
* Get the path to the bootstrapping directory
*
* This is usually /public for Web and EmbeddedWeb and /bin for the CLI
*
* @return string
*
* @throws LogicException If the base directory can not be detected
*/
public function getBootstrapDirectory()
{
$script = $_SERVER['SCRIPT_FILENAME'];
$canonical = realpath($script);
if ($canonical !== false) {
$dir = dirname($canonical);
} elseif (substr($script, -14) === '/webrouter.php') {
// If Icinga Web 2 is served using PHP's built-in webserver with our webrouter.php script, the $_SERVER
// variable SCRIPT_FILENAME is set to DOCUMENT_ROOT/webrouter.php which is not a valid path to
// realpath but DOCUMENT_ROOT here still is the bootstrapping directory
$dir = dirname($script);
} else {
throw new LogicException('Can\'t detected base directory');
}
return $dir;
}
/**
* Start the bootstrap
*
* @param string $baseDir Icinga Web 2 base directory
* @param string $configDir Path to Icinga Web 2's configuration files
*
* @return static
*/
public static function start($baseDir = null, $configDir = null)
{
$application = new static($baseDir, $configDir);
$application->bootstrap();
return $application;
}
/**
* Setup Icinga auto loader
*
* @return $this
*/
public function setupAutoloader()
{
require $this->libDir . '/Icinga/Application/Loader.php';
$this->loader = new Loader();
$this->loader->registerNamespace('Icinga', $this->libDir. '/Icinga');
$this->loader->register();
return $this;
}
/**
* Register the Zend Autoloader
*
* @return $this
*/
public function setupZendAutoloader()
{
require_once 'Zend/Loader/Autoloader.php';
\Zend_Loader_Autoloader::getInstance();
\Zend_Paginator::addScrollingStylePrefixPath(
'Icinga_Web_Paginator_ScrollingStyle_', $this->libDir . '/Icinga/Web/Paginator/ScrollingStyle'
);
return $this;
}
/**
* Setup module manager
*
* @return $this
*/
protected function setupModuleManager()
{
$this->moduleManager = new ModuleManager(
$this,
$this->configDir . '/enabledModules',
explode(':', $this->config->get('global', 'module_path', $this->baseDir . '/modules'))
);
return $this;
}
/**
* Load all enabled modules
*
* @return $this
*/
protected function loadEnabledModules()
{
try {
$this->moduleManager->loadEnabledModules();
} catch (NotReadableError $e) {
Logger::error(new IcingaException('Cannot load enabled modules. An exception was thrown:', $e));
}
return $this;
}
/**
* Load the setup module if Icinga Web 2 requires setup or the setup token exists
*
* @return $this
*/
protected function loadSetupModuleIfNecessary()
{
if (! @file_exists($this->config->resolvePath('authentication.ini'))) {
$this->requiresSetup = true;
$this->moduleManager->loadModule('setup');
} elseif ($this->setupTokenExists()) {
// Load setup module but do not require setup
$this->moduleManager->loadModule('setup');
}
return $this;
}
/**
* Get whether Icinga Web 2 requires setup
*
* @return bool
*/
public function requiresSetup()
{
return $this->requiresSetup;
}
/**
* Get whether the setup token exists
*
* @return bool
*/
public function setupTokenExists()
{
return @file_exists($this->config->resolvePath('setup.token'));
}
/**
* Setup default logging
*
* @return $this
*/
protected function setupLogging()
{
Logger::create(
new ConfigObject(
array(
'log' => 'syslog'
)
)
);
return $this;
}
/**
* Load Configuration
*
* @return $this
*/
protected function loadConfig()
{
Config::$configDir = $this->configDir;
try {
$this->config = Config::app();
} catch (NotReadableError $e) {
Logger::error(new IcingaException('Cannot load application configuration. An exception was thrown:', $e));
$this->config = new Config();
}
return $this;
}
/**
* Error handling configuration
*
* @return $this
*/
protected function setupErrorHandling()
{
error_reporting(E_ALL | E_STRICT);
ini_set('display_startup_errors', 1);
ini_set('display_errors', 1);
set_error_handler(function ($errno, $errstr, $errfile, $errline) {
if (error_reporting() === 0) {
// Error was suppressed with the @-operator
return false; // Continue with the normal error handler
}
switch($errno) {
case E_NOTICE:
case E_WARNING:
case E_STRICT:
throw new ErrorException($errstr, 0, $errno, $errfile, $errline);
}
return false; // Continue with the normal error handler
});
return $this;
}
/**
* Set up logger
*
* @return $this
*/
protected function setupLogger()
{
if ($this->config->hasSection('logging')) {
$loggingConfig = $this->config->getSection('logging');
try {
Logger::create($loggingConfig);
} catch (ConfigurationError $e) {
Logger::getInstance()->registerConfigError($e->getMessage());
try {
Logger::getInstance()->setLevel($loggingConfig->get('level', Logger::ERROR));
} catch (ConfigurationError $e) {
Logger::getInstance()->registerConfigError($e->getMessage());
}
}
}
return $this;
}
/**
* Set up the resource factory
*
* @return $this
*/
protected function setupResourceFactory()
{
try {
$config = Config::app('resources');
ResourceFactory::setConfig($config);
} catch (NotReadableError $e) {
Logger::error(
new IcingaException('Cannot load resource configuration. An exception was thrown:', $e)
);
}
return $this;
}
/**
* Detect the timezone
*
* @return null|string
*/
protected function detectTimezone()
{
return null;
}
/**
* Set up the timezone
*
* @return $this
*/
protected final function setupTimezone()
{
$timezone = $this->detectTimeZone();
if ($timezone === null || @date_default_timezone_set($timezone) === false) {
$timezone = @date_default_timezone_get();
if ($timezone === false) {
$timezone = 'UTC';
date_default_timezone_set($timezone);
}
}
DateTimeFactory::setConfig(array('timezone' => $timezone));
return $this;
}
/**
* Detect the locale
*
* @return null|string
*/
protected function detectLocale()
{
return null;
}
/**
* Set up internationalization using gettext
*
* @return $this
*/
protected final function setupInternationalization()
{
if ($this->hasLocales()) {
Translator::registerDomain(Translator::DEFAULT_DOMAIN, $this->getLocaleDir());
}
$locale = $this->detectLocale();
if ($locale === null) {
$locale = Translator::DEFAULT_LOCALE;
}
try {
Translator::setupLocale($locale);
} catch (Exception $error) {
Logger::error($error);
}
return $this;
}
/**
* @return string Our locale directory
*/
public function getLocaleDir()
{
return $this->getApplicationDir('locale');
}
/**
* return bool Whether Icinga Web has translations
*/
public function hasLocales()
{
$localedir = $this->getLocaleDir();
return file_exists($localedir) && is_dir($localedir);
}
/**
* List all available locales
*
* NOTE: Might be a candidate for a static function in Translator
*
* return array Locale list
*/
public function listLocales()
{
$locales = array();
if (! $this->hasLocales()) {
return $locales;
}
$localedir = $this->getLocaleDir();
$dh = opendir($localedir);
while (false !== ($file = readdir($dh))) {
$filename = $localedir . DIRECTORY_SEPARATOR . $file;
if (preg_match('/^[a-z]{2}_[A-Z]{2}$/', $file) && is_dir($filename)) {
$locales[] = $file;
}
}
closedir($dh);
sort($locales);
return $locales;
}
}