435 lines
11 KiB
PHP
435 lines
11 KiB
PHP
<?php
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/* Icinga Web 2 | (c) 2013-2015 Icinga Development Team | GPLv2+ */
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namespace Icinga\Application;
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use Iterator;
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use Countable;
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use LogicException;
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use UnexpectedValueException;
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use Icinga\Util\File;
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use Icinga\Data\ConfigObject;
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use Icinga\Data\Selectable;
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use Icinga\Data\SimpleQuery;
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use Icinga\File\Ini\IniWriter;
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use Icinga\Exception\NotReadableError;
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/**
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* Container for INI like configuration and global registry of application and module related configuration.
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*/
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class Config implements Countable, Iterator, Selectable
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{
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/**
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* Configuration directory where ALL (application and module) configuration is located
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*
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* @var string
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*/
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public static $configDir;
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/**
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* Application config instances per file
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*
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* @var array
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*/
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protected static $app = array();
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/**
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* Module config instances per file
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*
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* @var array
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*/
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protected static $modules = array();
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/**
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* The internal ConfigObject
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*
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* @var ConfigObject
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*/
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protected $config;
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/**
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* The INI file this config has been loaded from or should be written to
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*
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* @var string
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*/
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protected $configFile;
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/**
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* Create a new config
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*
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* @param ConfigObject $config The config object to handle
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*/
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public function __construct(ConfigObject $config = null)
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{
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$this->config = $config !== null ? $config : new ConfigObject();
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}
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/**
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* Return this config's file path
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*
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* @return string
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*/
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public function getConfigFile()
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{
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return $this->configFile;
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}
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/**
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* Set this config's file path
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*
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* @param string $filepath The path to the ini file
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*
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* @return $this
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*/
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public function setConfigFile($filepath)
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{
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$this->configFile = $filepath;
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return $this;
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}
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/**
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* Return the internal ConfigObject
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*
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* @return ConfigObject
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*/
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public function getConfigObject()
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{
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return $this->config;
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}
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/**
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* Provide a query for the internal config object
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*
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* @return SimpleQuery
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*/
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public function select()
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{
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return $this->config->select();
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}
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/**
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* Return the count of available sections
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*
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* @return int
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*/
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public function count()
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{
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return $this->select()->count();
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}
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/**
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* Reset the current position of the internal config object
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*
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* @return ConfigObject
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*/
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public function rewind()
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{
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return $this->config->rewind();
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}
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/**
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* Return the section of the current iteration
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*
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* @return ConfigObject
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*/
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public function current()
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{
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return $this->config->current();
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}
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/**
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* Return whether the position of the current iteration is valid
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*
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* @return bool
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*/
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public function valid()
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{
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return $this->config->valid();
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}
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/**
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* Return the section's name of the current iteration
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*
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* @return string
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*/
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public function key()
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{
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return $this->config->key();
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}
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/**
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* Advance the position of the current iteration and return the new section
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*
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* @return ConfigObject
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*/
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public function next()
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{
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return $this->config->next();
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}
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/**
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* Return whether this config has any sections
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*
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* @return bool
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*/
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public function isEmpty()
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{
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return $this->config->isEmpty();
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}
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/**
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* Return this config's section names
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*
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* @return array
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*/
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public function keys()
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{
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return $this->config->keys();
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}
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/**
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* Return this config's data as associative array
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*
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* @return array
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*/
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public function toArray()
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{
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return $this->config->toArray();
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}
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/**
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* Return the value from a section's property
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*
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* @param string $section The section where the given property can be found
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* @param string $key The section's property to fetch the value from
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* @param mixed $default The value to return in case the section or the property is missing
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*
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* @return mixed
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*
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* @throws UnexpectedValueException In case the given section does not hold any configuration
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*/
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public function get($section, $key, $default = null)
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{
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$value = $this->config->$section;
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if ($value instanceof ConfigObject) {
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$value = $value->$key;
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} elseif ($value !== null) {
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throw new UnexpectedValueException(
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sprintf('Value "%s" is not of type "%s" or a sub-type of it', $value, get_class($this->config))
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);
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}
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if ($value === null && $default !== null) {
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$value = $default;
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}
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return $value;
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}
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/**
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* Return the given section
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*
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* @param string $name The section's name
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*
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* @return ConfigObject
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*/
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public function getSection($name)
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{
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$section = $this->config->get($name);
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return $section !== null ? $section : new ConfigObject();
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}
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/**
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* Set or replace a section
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*
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* @param string $name
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* @param array|ConfigObject $config
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*
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* @return $this
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*/
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public function setSection($name, $config = null)
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{
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if ($config === null) {
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$config = new ConfigObject();
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} elseif (! $config instanceof ConfigObject) {
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$config = new ConfigObject($config);
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}
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$this->config->$name = $config;
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return $this;
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}
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/**
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* Remove a section
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*
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* @param string $name
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*
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* @return $this
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*/
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public function removeSection($name)
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{
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unset($this->config->$name);
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return $this;
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}
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/**
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* Return whether the given section exists
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*
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* @param string $name
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*
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* @return bool
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*/
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public function hasSection($name)
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{
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return isset($this->config->$name);
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}
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/**
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* Initialize a new config using the given array
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*
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* The returned config has no file associated to it.
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*
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* @param array $array The array to initialize the config with
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*
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* @return Config
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*/
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public static function fromArray(array $array)
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{
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return new static(new ConfigObject($array));
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}
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/**
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* Load configuration from the given INI file
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*
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* @param string $file The file to parse
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*
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* @throws NotReadableError When the file cannot be read
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*/
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public static function fromIni($file)
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{
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$emptyConfig = new static();
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$filepath = realpath($file);
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if ($filepath === false) {
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$emptyConfig->setConfigFile($file);
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} elseif (is_readable($filepath)) {
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$config = new static(new ConfigObject(parse_ini_file($filepath, true)));
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$config->setConfigFile($filepath);
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return $config;
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} elseif (@file_exists($filepath)) {
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throw new NotReadableError(t('Cannot read config file "%s". Permission denied'), $filepath);
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}
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return $emptyConfig;
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}
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/**
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* Save configuration to the given INI file
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*
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* @param string|null $filePath The path to the INI file or null in case this config's path should be used
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* @param int $fileMode The file mode to store the file with
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*
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* @throws LogicException In case this config has no path and none is passed in either
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* @throws NotWritableError In case the INI file cannot be written
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*
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* @todo create basepath and throw NotWritableError in case its not possible
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*/
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public function saveIni($filePath = null, $fileMode = 0660)
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{
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if ($filePath === null && $this->configFile) {
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$filePath = $this->configFile;
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} elseif ($filePath === null) {
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throw new LogicException('You need to pass $filePath or set a path using Config::setConfigFile()');
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}
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if (! file_exists($filePath)) {
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File::create($filePath, $fileMode);
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}
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$this->getIniWriter($filePath, $fileMode)->write();
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}
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/**
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* Return a IniWriter for this config
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*
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* @param string|null $filePath
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* @param int $fileMode
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*
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* @return IniWriter
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*/
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protected function getIniWriter($filePath = null, $fileMode = null)
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{
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return new IniWriter(array(
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'config' => $this,
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'filename' => $filePath,
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'filemode' => $fileMode
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));
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}
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/**
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* Prepend configuration base dir to the given relative path
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*
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* @param string $path A relative path
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*
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* @return string
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*/
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public static function resolvePath($path)
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{
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return self::$configDir . DIRECTORY_SEPARATOR . ltrim($path, DIRECTORY_SEPARATOR);
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}
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/**
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* Retrieve a application config
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*
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* @param string $configname The configuration name (without ini suffix) to read and return
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* @param bool $fromDisk When set true, the configuration will be read from disk, even
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* if it already has been read
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*
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* @return Config The requested configuration
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*/
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public static function app($configname = 'config', $fromDisk = false)
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{
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if (! isset(self::$app[$configname]) || $fromDisk) {
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self::$app[$configname] = static::fromIni(static::resolvePath($configname . '.ini'));
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}
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return self::$app[$configname];
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}
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/**
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* Retrieve a module config
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*
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* @param string $modulename The name of the module where to look for the requested configuration
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* @param string $configname The configuration name (without ini suffix) to read and return
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* @param string $fromDisk When set true, the configuration will be read from disk, even
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* if it already has been read
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*
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* @return Config The requested configuration
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*/
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public static function module($modulename, $configname = 'config', $fromDisk = false)
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{
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if (! isset(self::$modules[$modulename])) {
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self::$modules[$modulename] = array();
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}
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$moduleConfigs = self::$modules[$modulename];
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if (! isset($moduleConfigs[$configname]) || $fromDisk) {
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$moduleConfigs[$configname] = static::fromIni(
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static::resolvePath('modules/' . $modulename . '/' . $configname . '.ini')
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);
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}
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return $moduleConfigs[$configname];
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}
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/**
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* Return this config rendered as a INI structured string
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*
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* @return string
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*/
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public function __toString()
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{
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return $this->getIniWriter()->render();
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}
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}
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