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<?php
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/**
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* PEAR_Installer_Role_Cfg
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*
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* PHP versions 4 and 5
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*
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* @category pear
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* @package PEAR
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* @author Greg Beaver <cellog@php.net>
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* @copyright 2007-2009 The Authors
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* @license http://opensource.org/licenses/bsd-license.php New BSD License
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* @version CVS: $Id: Cfg.php 313023 2011-07-06 19:17:11Z dufuz $
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* @link http://pear.php.net/package/PEAR
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* @since File available since Release 1.7.0
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*/
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/**
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* @category pear
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* @package PEAR
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* @author Greg Beaver <cellog@php.net>
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* @copyright 2007-2009 The Authors
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* @license http://opensource.org/licenses/bsd-license.php New BSD License
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* @version Release: 1.9.4
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* @link http://pear.php.net/package/PEAR
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* @since Class available since Release 1.7.0
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*/
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class PEAR_Installer_Role_Cfg extends PEAR_Installer_Role_Common
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{
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/**
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* @var PEAR_Installer
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*/
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var $installer;
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/**
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* the md5 of the original file
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*
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* @var unknown_type
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*/
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var $md5 = null;
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/**
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* Do any unusual setup here
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* @param PEAR_Installer
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* @param PEAR_PackageFile_v2
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* @param array file attributes
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* @param string file name
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*/
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function setup(&$installer, $pkg, $atts, $file)
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{
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$this->installer = &$installer;
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$reg = &$this->installer->config->getRegistry();
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$package = $reg->getPackage($pkg->getPackage(), $pkg->getChannel());
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if ($package) {
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$filelist = $package->getFilelist();
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if (isset($filelist[$file]) && isset($filelist[$file]['md5sum'])) {
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$this->md5 = $filelist[$file]['md5sum'];
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}
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}
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}
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function processInstallation($pkg, $atts, $file, $tmp_path, $layer = null)
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{
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$test = parent::processInstallation($pkg, $atts, $file, $tmp_path, $layer);
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if (@file_exists($test[2]) && @file_exists($test[3])) {
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$md5 = md5_file($test[2]);
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// configuration has already been installed, check for mods
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if ($md5 !== $this->md5 && $md5 !== md5_file($test[3])) {
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// configuration has been modified, so save our version as
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// configfile-version
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$old = $test[2];
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$test[2] .= '.new-' . $pkg->getVersion();
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// backup original and re-install it
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PEAR::pushErrorHandling(PEAR_ERROR_RETURN);
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$tmpcfg = $this->config->get('temp_dir');
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$newloc = System::mkdir(array('-p', $tmpcfg));
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if (!$newloc) {
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// try temp_dir
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$newloc = System::mktemp(array('-d'));
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if (!$newloc || PEAR::isError($newloc)) {
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PEAR::popErrorHandling();
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return PEAR::raiseError('Could not save existing configuration file '.
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$old . ', unable to install. Please set temp_dir ' .
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'configuration variable to a writeable location and try again');
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}
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} else {
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$newloc = $tmpcfg;
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}
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$temp_file = $newloc . DIRECTORY_SEPARATOR . uniqid('savefile');
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if (!@copy($old, $temp_file)) {
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PEAR::popErrorHandling();
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return PEAR::raiseError('Could not save existing configuration file '.
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$old . ', unable to install. Please set temp_dir ' .
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'configuration variable to a writeable location and try again');
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}
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PEAR::popErrorHandling();
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$this->installer->log(0, "WARNING: configuration file $old is being installed as $test[2], you should manually merge in changes to the existing configuration file");
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$this->installer->addFileOperation('rename', array($temp_file, $old, false));
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$this->installer->addFileOperation('delete', array($temp_file));
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}
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}
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return $test;
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}
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}
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