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798 lines
22 KiB
PHP
798 lines
22 KiB
PHP
<?php
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//
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// +----------------------------------------------------------------------+
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// | PHP Version 4 |
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// +----------------------------------------------------------------------+
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// | Copyright (c) 1997-2002 The PHP Group |
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// +----------------------------------------------------------------------+
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// | This source file is subject to version 2.02 of the PHP license, |
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// | that is bundled with this package in the file LICENSE, and is |
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// | available at through the world-wide-web at |
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// | http://www.php.net/license/2_02.txt. |
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// | If you did not receive a copy of the PHP license and are unable to |
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// | obtain it through the world-wide-web, please send a note to |
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// | license@php.net so we can mail you a copy immediately. |
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// +----------------------------------------------------------------------+
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// | Author: Stig Bakken <ssb@fast.no> |
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// +----------------------------------------------------------------------+
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//
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// $Id$
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require_once 'PEAR.php';
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/**
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* Last created PEAR_Config instance.
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* @var object
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*/
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$GLOBALS['_PEAR_Config_instance'] = null;
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define('PEAR_CONFIG_DEFAULT_DOCDIR',
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PHP_DATADIR.DIRECTORY_SEPARATOR.'doc'.DIRECTORY_SEPARATOR.'pear');
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define('PEAR_DEFAULT_UMASK', umask());
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// in case a --without-pear PHP installation is used
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if (!defined('PEAR_INSTALL_DIR')) {
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define('PEAR_INSTALL_DIR', PHP_LIBDIR);
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}
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if (!defined('PEAR_EXTENSION_DIR')) {
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define('PEAR_EXTENSION_DIR', PHP_EXTENSION_DIR);
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}
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/**
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* This is a class for storing configuration data, keeping track of
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* which are system-defined, user-defined or defaulted.
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*/
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class PEAR_Config extends PEAR
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{
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// {{{ properties
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/**
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* Array of config files used.
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*
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* @var array layer => config file
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*/
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var $files = array(
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'system' => '',
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'user' => '',
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);
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var $layers = array();
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/**
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* Configuration data, two-dimensional array where the first
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* dimension is the config layer ('user', 'system' and 'default'),
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* and the second dimension is keyname => value.
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*
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* The order in the first dimension is important! Earlier
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* layers will shadow later ones when a config value is
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* requested (if a 'user' value exists, it will be returned first,
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* then 'system' and finally 'default').
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*
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* @var array layer => array(keyname => value, ...)
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*/
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var $configuration = array(
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'user' => array(),
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'system' => array(),
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'default' => array(),
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);
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/**
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* Information about the configuration data. Stores the type,
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* default value and a documentation string for each configuration
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* value.
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*
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* @var array layer => array(infotype => value, ...)
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*/
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var $configuration_info = array(
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'master_server' => array(
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'type' => 'string',
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'default' => 'pear.php.net',
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'doc' => 'name of the main PEAR server',
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),
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'php_dir' => array(
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'type' => 'directory',
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'default' => PEAR_INSTALL_DIR,
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'doc' => 'directory where .php files are installed',
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),
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'ext_dir' => array(
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'type' => 'directory',
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'default' => PEAR_EXTENSION_DIR,
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'doc' => 'directory where loadable extensions are installed',
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),
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'doc_dir' => array(
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'type' => 'directory',
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'default' => PEAR_CONFIG_DEFAULT_DOCDIR,
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'doc' => 'directory where documentation is installed',
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),
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'bin_dir' => array(
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'type' => 'directory',
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'default' => PHP_BINDIR,
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'doc' => 'directory where executables are installed',
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),
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'username' => array(
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'type' => 'string',
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'default' => '',
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'doc' => '(maintainers) your PEAR account name',
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),
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'password' => array(
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'type' => 'password',
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'default' => '',
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'doc' => '(maintainers) your PEAR account password',
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),
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'verbose' => array(
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'type' => 'integer',
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'default' => 1,
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'doc' => 'verbosity level',
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),
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'preferred_state' => array(
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'type' => 'set',
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'default' => 'stable',
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'doc' => 'the installer will prefer releases with this state
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when installing packages without a version or state specified',
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'valid_set' => array(
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'stable', 'beta', 'alpha', 'devel', 'snapshot', 'any'),
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),
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'http_proxy' => array(
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'type' => 'string',
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'default' => '',
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'doc' => 'HTTP proxy (host:port) to use when downloading packages',
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),
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'umask' => array(
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'type' => 'int',
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'default' => PEAR_DEFAULT_UMASK,
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'doc' => 'umask used when creating files (Unix-like systems only)',
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),
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/*
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'testset1' => array(
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'type' => 'set',
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'default' => 'foo',
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'doc' => 'test set',
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'valid_set' => array('foo', 'bar'),
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),
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*/
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);
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// }}}
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// {{{ PEAR_Config([file], [defaults_file])
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/**
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* Constructor.
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*
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* @param string (optional) file to read user-defined options from
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* @param string (optional) file to read system-wide defaults from
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*
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* @access public
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*
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* @see PEAR_Config::singleton
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*/
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function PEAR_Config($user_file = '', $system_file = '')
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{
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$this->PEAR();
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$sl = DIRECTORY_SEPARATOR;
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if (empty($user_file)) {
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if (OS_WINDOWS) {
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$user_file = PHP_SYSCONFDIR . $sl . 'pear.ini';
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} else {
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$user_file = getenv('HOME') . $sl . '.pearrc';
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}
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}
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if (empty($system_file)) {
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if (OS_WINDOWS) {
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$system_file = PHP_SYSCONFDIR . $sl . 'pearsys.ini';
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} else {
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$system_file = PHP_SYSCONFDIR . $sl . 'pear.conf';
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}
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}
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$this->layers = array_keys($this->configuration);
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$this->files['user'] = $user_file;
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$this->files['system'] = $system_file;
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if ($user_file && file_exists($user_file)) {
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$this->readConfigFile($user_file);
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}
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if ($system_file && file_exists($system_file)) {
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$this->mergeConfigFile($system_file, false, 'system');
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}
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foreach ($this->configuration_info as $key => $info) {
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$this->configuration['default'][$key] = $info['default'];
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}
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//$GLOBALS['_PEAR_Config_instance'] = &$this;
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}
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// }}}
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// {{{ singleton([file], [defaults_file])
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/**
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* Static singleton method. If you want to keep only one instance
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* of this class in use, this method will give you a reference to
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* the last created PEAR_Config object if one exists, or create a
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* new object.
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*
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* @param string (optional) file to read user-defined options from
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* @param string (optional) file to read system-wide defaults from
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*
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* @return object an existing or new PEAR_Config instance
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*
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* @access public
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*
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* @see PEAR_Config::PEAR_Config
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*/
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function &singleton($user_file = '', $system_file = '')
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{
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if (is_object($GLOBALS['_PEAR_Config_instance'])) {
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return $GLOBALS['_PEAR_Config_instance'];
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}
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$GLOBALS['_PEAR_Config_instance'] =
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&new PEAR_Config($user_file, $system_file);
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return $GLOBALS['_PEAR_Config_instance'];
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}
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// }}}
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// {{{ readConfigFile([file], [layer])
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/**
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* Reads configuration data from a file. All existing values in
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* the config layer are discarded and replaced with data from the
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* file.
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*
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* @param string (optional) file to read from, if NULL or not
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* specified, the last-used file for the same layer (second param)
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* is used
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*
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* @param string (optional) config layer to insert data into
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* ('user' or 'system')
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*
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* @return bool TRUE on success or a PEAR error on failure
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*
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* @access public
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*/
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function readConfigFile($file = null, $layer = 'user')
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{
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if (empty($this->files[$layer])) {
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return $this->raiseError("unknown config file type `$layer'");
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}
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if ($file === null) {
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$file = $this->files[$layer];
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}
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$data = $this->_readConfigDataFrom($file);
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if (PEAR::isError($data)) {
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return $data;
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}
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$this->_decodeInput($data);
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$this->configuration[$layer] = $data;
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return true;
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}
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// }}}
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// {{{ mergeConfigFile(file, [override], [layer])
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/**
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* Merges data into a config layer from a file. Does the same
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* thing as readConfigFile, except it does not replace all
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* existing values in the config layer.
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*
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* @param string file to read from
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*
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* @param bool (optional) whether to overwrite existing data
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* (default TRUE)
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*
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* @param string config layer to insert data into ('user' or
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* 'system')
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*
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* @return bool TRUE on success or a PEAR error on failure
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*
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* @access public.
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*/
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function mergeConfigFile($file, $override = true, $layer = 'user')
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{
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if (empty($this->files[$layer])) {
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return $this->raiseError("unknown config file type `$layer'");
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}
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if ($file === null) {
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$file = $this->files[$layer];
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}
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$data = $this->_readConfigDataFrom($file);
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if (PEAR::isError($data)) {
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return $data;
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}
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$this->_decodeInput($data);
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if ($override) {
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$this->configuration[$layer] = array_merge($this->configuration[$layer], $data);
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} else {
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$this->configuration[$layer] = array_merge($data, $this->configuration[$layer]);
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}
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return true;
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}
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// }}}
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// {{{ writeConfigFile([file], [layer])
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/**
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* Writes data into a config layer from a file.
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*
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* @param string file to read from
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*
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* @param bool (optional) whether to overwrite existing data
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* (default TRUE)
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*
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* @param string config layer to insert data into ('user' or
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* 'system')
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*
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* @return bool TRUE on success or a PEAR error on failure
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*
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* @access public.
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*/
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function writeConfigFile($file = null, $layer = 'user')
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{
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if ($layer == 'both' || $layer == 'all') {
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foreach ($this->files as $type => $file) {
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$err = $this->writeConfigFile($file, $type);
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if (PEAR::isError($err)) {
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return $err;
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}
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}
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return true;
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}
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if (empty($this->files[$layer])) {
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return $this->raiseError("unknown config file type `$layer'");
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}
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if ($file === null) {
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$file = $this->files[$layer];
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}
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$data = $this->configuration[$layer];
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$this->_encodeOutput($data);
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if (@file_exists($file) && !@is_writeable($file)) {
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return $this->raiseError("no write access to $file!");
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}
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$fp = @fopen($file, "w");
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if (!$fp) {
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return $this->raiseError("PEAR_Config::writeConfigFile fopen('$file','w') failed");
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}
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$contents = "#PEAR_Config 0.9\n" . serialize($data);
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if (!@fwrite($fp, $contents)) {
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return $this->raiseError("PEAR_Config::writeConfigFile: fwrite failed");
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}
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return true;
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}
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// }}}
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// {{{ _readConfigDataFrom(file)
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/**
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* Reads configuration data from a file and returns the parsed data
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* in an array.
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*
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* @param string file to read from
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*
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* @return array configuration data or a PEAR error on failure
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*
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* @access private
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*/
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function _readConfigDataFrom($file)
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{
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$fp = @fopen($file, "r");
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if (!$fp) {
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return $this->raiseError("PEAR_Config::readConfigFile fopen('$file','r') failed");
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}
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$size = filesize($file);
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$contents = fread($fp, $size);
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$version = '0.1';
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if (preg_match('/^#PEAR_Config\s+(\S+)\s+/si', $contents, $matches)) {
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$version = $matches[1];
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$contents = substr($contents, strlen($matches[0]));
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}
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if (version_compare($version, '1', '<')) {
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$data = unserialize($contents);
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if (!is_array($data)) {
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if (strlen(trim($contents)) > 0) {
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$error = "PEAR_Config: bad data in $file";
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// if (isset($this)) {
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return $this->raiseError($error);
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// } else {
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// return PEAR::raiseError($error);
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} else {
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$data = array();
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}
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}
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// add parsing of newer formats here...
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} else {
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return $this->raiseError("$file: unknown version `$version'");
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}
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return $data;
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}
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// }}}
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// {{{ _encodeOutput(&data)
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/**
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* Encodes/scrambles configuration data before writing to files.
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* Currently, 'password' values will be base64-encoded as to avoid
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* that people spot cleartext passwords by accident.
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*
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* @param array (reference) array to encode values in
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*
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* @return bool TRUE on success
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*
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* @access private
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*/
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function _encodeOutput(&$data)
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{
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foreach ($data as $key => $value) {
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if (!isset($this->configuration_info[$key])) {
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continue;
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}
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$type = $this->configuration_info[$key]['type'];
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switch ($type) {
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// we base64-encode passwords so they are at least
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// not shown in plain by accident
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case 'password': {
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$data[$key] = base64_encode($data[$key]);
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break;
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}
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}
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}
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return true;
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}
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// }}}
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// {{{ _decodeInput(&data)
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/**
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* Decodes/unscrambles configuration data after reading from files.
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*
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* @param array (reference) array to encode values in
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*
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* @return bool TRUE on success
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*
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* @access private
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*
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* @see PEAR_Config::_encodeOutput
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*/
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function _decodeInput(&$data)
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{
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if (!is_array($data)) {
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return true;
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}
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foreach ($data as $key => $value) {
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if (!isset($this->configuration_info[$key])) {
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continue;
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}
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$type = $this->configuration_info[$key]['type'];
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switch ($type) {
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case 'password': {
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$data[$key] = base64_decode($data[$key]);
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break;
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}
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}
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}
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return true;
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}
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// }}}
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// {{{ get(key, [layer])
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/**
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* Returns a configuration value, prioritizing layers as per the
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* layers property.
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*
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* @param string config key
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*
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* @return mixed the config value, or NULL if not found
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*
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* @access public
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*/
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function get($key, $layer = null)
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{
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if ($layer === null) {
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foreach ($this->layers as $layer) {
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if (isset($this->configuration[$layer][$key])) {
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return $this->configuration[$layer][$key];
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}
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}
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} elseif (isset($this->configuration[$layer][$key])) {
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return $this->configuration[$layer][$key];
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}
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return null;
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}
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// }}}
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// {{{ set(key, value, [layer])
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/**
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* Set a config value in a specific layer (defaults to 'user').
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* Enforces the types defined in the configuration_info array. An
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* integer config variable will be cast to int, and a set config
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* variable will be validated against its legal values.
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*
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* @param string config key
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*
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* @param string config value
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*
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* @param string (optional) config layer
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*
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* @return bool TRUE on success, FALSE on failure
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*
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* @access public
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*/
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function set($key, $value, $layer = 'user')
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{
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if (empty($this->configuration_info[$key])) {
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return false;
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}
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extract($this->configuration_info[$key]);
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switch ($type) {
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case 'integer': {
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$value = (int)$value;
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break;
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}
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case 'set': {
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// If a valid_set is specified, require the value to
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// be in the set. If there is no valid_set, accept
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// any value.
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if ($valid_set) {
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reset($valid_set);
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if ((key($valid_set) === 0 && !in_array($value, $valid_set)) ||
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empty($valid_set[$value]))
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{
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return false;
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}
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}
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break;
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}
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}
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$this->configuration[$layer][$key] = $value;
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return true;
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}
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// }}}
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// {{{ getType(key)
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/**
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* Get the type of a config value.
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*
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* @param string config key
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*
|
|
* @return string type, one of "string", "integer", "file",
|
|
* "directory", "set" or "password".
|
|
*
|
|
* @access public
|
|
*
|
|
*/
|
|
function getType($key)
|
|
{
|
|
if (isset($this->configuration_info[$key])) {
|
|
return $this->configuration_info[$key]['type'];
|
|
}
|
|
return false;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ getDocs(key)
|
|
|
|
/**
|
|
* Get the documentation for a config value.
|
|
*
|
|
* @param string config key
|
|
*
|
|
* @return string documentation string
|
|
*
|
|
* @access public
|
|
*
|
|
*/
|
|
function getDocs($key)
|
|
{
|
|
if (isset($this->configuration_info[$key])) {
|
|
return $this->configuration_info[$key]['doc'];
|
|
}
|
|
return false;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ getSetValues(key)
|
|
|
|
/**
|
|
* Get the list of allowed set values for a config value. Returns
|
|
* NULL for config values that are not sets.
|
|
*
|
|
* @param string config key
|
|
*
|
|
* @return array enumerated array of set values, or NULL if the
|
|
* config key is unknown or not a set
|
|
*
|
|
* @access public
|
|
*
|
|
*/
|
|
function getSetValues($key)
|
|
{
|
|
if (isset($this->configuration_info[$key]) &&
|
|
isset($this->configuration_info[$key]['type']) &&
|
|
$this->configuration_info[$key]['type'] == 'set')
|
|
{
|
|
$valid_set = $this->configuration_info[$key]['valid_set'];
|
|
reset($valid_set);
|
|
if (key($valid_set) === 0) {
|
|
return $valid_set;
|
|
}
|
|
return array_keys($valid_set);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ getKeys()
|
|
|
|
/**
|
|
* Get all the current config keys.
|
|
*
|
|
* @return array simple array of config keys
|
|
*
|
|
* @access public
|
|
*/
|
|
function getKeys()
|
|
{
|
|
$keys = array();
|
|
foreach ($this->layers as $layer) {
|
|
$keys = array_merge($keys, $this->configuration[$layer]);
|
|
}
|
|
return array_keys($keys);
|
|
}
|
|
|
|
// }}}
|
|
// {{{ remove(key, [layer])
|
|
|
|
/**
|
|
* Remove the a config key from a specific config layer.
|
|
*
|
|
* @param string config key
|
|
*
|
|
* @param string (optional) config layer
|
|
*
|
|
* @return bool TRUE on success, FALSE on failure
|
|
*
|
|
* @access public
|
|
*/
|
|
function remove($key, $layer = 'user')
|
|
{
|
|
if (isset($this->configuration[$layer][$key])) {
|
|
unset($this->configuration[$layer][$key]);
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ store([layer])
|
|
|
|
/**
|
|
* Stores configuration data in a layer.
|
|
*
|
|
* @param string config layer to store
|
|
*
|
|
* @return bool TRUE on success, or PEAR error on failure
|
|
*
|
|
* @access public
|
|
*/
|
|
function store($layer = 'user')
|
|
{
|
|
return $this->writeConfigFile(null, $layer);
|
|
}
|
|
|
|
// }}}
|
|
// {{{ toDefault(key)
|
|
|
|
/**
|
|
* Unset the user-defined value of a config key, reverting the
|
|
* value to the system-defined one.
|
|
*
|
|
* @param string config key
|
|
*
|
|
* @return bool TRUE on success, FALSE on failure
|
|
*
|
|
* @access public
|
|
*/
|
|
function toDefault($key)
|
|
{
|
|
trigger_error("PEAR_Config::toDefault() deprecated, use PEAR_Config::remove() instead", E_USER_NOTICE);
|
|
return $this->remove($key, 'user');
|
|
}
|
|
|
|
// }}}
|
|
// {{{ definedBy(key)
|
|
|
|
/**
|
|
* Tells what config layer that gets to define a key.
|
|
*
|
|
* @param string config key
|
|
*
|
|
* @return string the config layer, or an empty string if not found
|
|
*
|
|
* @access public
|
|
*/
|
|
function definedBy($key)
|
|
{
|
|
foreach ($this->layers as $layer) {
|
|
if (isset($this->configuration[$layer][$key])) {
|
|
return $layer;
|
|
}
|
|
}
|
|
return '';
|
|
}
|
|
|
|
// }}}
|
|
// {{{ isDefaulted(key)
|
|
|
|
/**
|
|
* Tells whether a config value has a system-defined value.
|
|
*
|
|
* @param string config key
|
|
*
|
|
* @return bool
|
|
*
|
|
* @access public
|
|
*
|
|
* @deprecated
|
|
*/
|
|
function isDefaulted($key)
|
|
{
|
|
trigger_error("PEAR_Config::isDefaulted() deprecated, use PEAR_Config::definedBy() instead", E_USER_NOTICE);
|
|
return $this->definedBy($key) == 'system';
|
|
}
|
|
|
|
// }}}
|
|
// {{{ isDefined(key)
|
|
|
|
/**
|
|
* Tells whether a given key exists as a config value.
|
|
*
|
|
* @param string config key
|
|
*
|
|
* @return bool whether <config key> exists in this object
|
|
*
|
|
* @access public
|
|
*/
|
|
function isDefined($key)
|
|
{
|
|
foreach ($this->layers as $layer) {
|
|
if (isset($this->configuration[$layer][$key])) {
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ isDefinedLayer(key)
|
|
|
|
/**
|
|
* Tells whether a given config layer exists.
|
|
*
|
|
* @param string config layer
|
|
*
|
|
* @return bool whether <config layer> exists in this object
|
|
*
|
|
* @access public
|
|
*/
|
|
function isDefinedLayer($layer)
|
|
{
|
|
return isset($this->configuration[$layer]);
|
|
}
|
|
|
|
// }}}
|
|
// {{{ getLayers()
|
|
|
|
/**
|
|
* Returns the layers defined (except the 'default' one)
|
|
*
|
|
* @return array of the defined layers
|
|
*/
|
|
function getLayers()
|
|
{
|
|
$cf = $this->configuration;
|
|
unset($cf['default']);
|
|
return array_keys($cf);
|
|
}
|
|
|
|
// }}}
|
|
}
|
|
|
|
?>
|