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Edit File : Installer.php \| Size : 68.45 KB
<?php /** * PEAR_Installer * * PHP versions 4 and 5 * * @category pear * @package PEAR * @author Stig Bakken <ssb@php.net> * @author Tomas V.V. Cox <cox@idecnet.com> * @author Martin Jansen <mj@php.net> * @author Greg Beaver <cellog@php.net> * @copyright 1997-2009 The Authors * @license http://opensource.org/licenses/bsd-license.php New BSD License * @link http://pear.php.net/package/PEAR * @since File available since Release 0.1 / /* * Used for installation groups in package.xml 2.0 and platform exceptions / require_once 'OS/Guess.php'; require_once 'PEAR/Downloader.php'; define('PEAR_INSTALLER_NOBINARY', -240); /* * Administration class used to install PEAR packages and maintain the * installed package database. * * @category pear * @package PEAR * @author Stig Bakken <ssb@php.net> * @author Tomas V.V. Cox <cox@idecnet.com> * @author Martin Jansen <mj@php.net> * @author Greg Beaver <cellog@php.net> * @copyright 1997-2009 The Authors * @license http://opensource.org/licenses/bsd-license.php New BSD License * @version Release: 1.10.16 * @link http://pear.php.net/package/PEAR * @since Class available since Release 0.1 / class PEAR_Installer extends PEAR_Downloader { // {{{ properties /* name of the package directory, for example Foo-1.0 * @var string / var $pkgdir; /* directory where PHP code files go * @var string / var $phpdir; /* directory where PHP extension files go * @var string / var $extdir; /* directory where documentation goes * @var string / var $docdir; /* installation root directory (ala PHP's INSTALL_ROOT or * automake's DESTDIR * @var string / var $installroot = ''; /* debug level * @var int / var $debug = 1; /* temporary directory * @var string / var $tmpdir; /* * PEAR_Registry object used by the installer * @var PEAR_Registry / var $registry; /* * array of PEAR_Downloader_Packages * @var array / var $_downloadedPackages; /* List of file transactions queued for an install/upgrade/uninstall. * * Format: * array( * 0 => array("rename => array("from-file", "to-file")), * 1 => array("delete" => array("file-to-delete")), * ... * ) * * @var array / var $file_operations = array(); // }}} // {{{ constructor /* * PEAR_Installer constructor. * * @param object $ui user interface object (instance of PEAR_Frontend_) * @access public / function __construct(&$ui) { parent::__construct($ui, array(), null); $this->setFrontendObject($ui); $this->debug = $this->config->get('verbose'); } function setOptions($options) { $this->_options = $options; } function setConfig(&$config) { $this->config = &$config; $this->_registry = &$config->getRegistry(); } // }}} function _removeBackups($files) { foreach ($files as $path) { $this->addFileOperation('removebackup', array($path)); } } // {{{ _deletePackageFiles() /* * Delete a package's installed files, does not remove empty directories. * * @param string package name * @param string channel name * @param bool if true, then files are backed up first * @return bool TRUE on success, or a PEAR error on failure * @access protected / function _deletePackageFiles($package, $channel = false, $backup = false) { if (!$channel) { $channel = 'pear.php.net'; } if (!strlen($package)) { return $this->raiseError("No package to uninstall given"); } if (strtolower($package) == 'pear' && $channel == 'pear.php.net') { // to avoid race conditions, include all possible needed files require_once 'PEAR/Task/Common.php'; require_once 'PEAR/Task/Replace.php'; require_once 'PEAR/Task/Unixeol.php'; require_once 'PEAR/Task/Windowseol.php'; require_once 'PEAR/PackageFile/v1.php'; require_once 'PEAR/PackageFile/v2.php'; require_once 'PEAR/PackageFile/Generator/v1.php'; require_once 'PEAR/PackageFile/Generator/v2.php'; } $filelist = $this->_registry->packageInfo($package, 'filelist', $channel); if ($filelist == null) { return $this->raiseError("$channel/$package not installed"); } $ret = array(); foreach ($filelist as $file => $props) { if (empty($props['installed_as'])) { continue; } $path = $props['installed_as']; if ($backup) { $this->addFileOperation('backup', array($path)); $ret[] = $path; } $this->addFileOperation('delete', array($path)); } if ($backup) { return $ret; } return true; } // }}} // {{{ _installFile() /* * @param string filename * @param array attributes from <file> tag in package.xml * @param string path to install the file in * @param array options from command-line * @access private / function _installFile($file, $atts, $tmp_path, $options) { // {{{ return if this file is meant for another platform static $os; if (!isset($this->_registry)) { $this->_registry = &$this->config->getRegistry(); } if (isset($atts['platform'])) { if (empty($os)) { $os = new OS_Guess(); } if (strlen($atts['platform']) && $atts['platform'][0] == '!') { $negate = true; $platform = substr($atts['platform'], 1); } else { $negate = false; $platform = $atts['platform']; } if ((bool) $os->matchSignature($platform) === $negate) { $this->log(3, "skipped $file (meant for $atts[platform], we are ".$os->getSignature().")"); return PEAR_INSTALLER_SKIPPED; } } // }}} $channel = $this->pkginfo->getChannel(); // {{{ assemble the destination paths switch ($atts['role']) { case 'src': case 'extsrc': $this->source_files++; return; case 'doc': case 'data': case 'test': $dest_dir = $this->config->get($atts['role'] . '_dir', null, $channel) . DIRECTORY_SEPARATOR . $this->pkginfo->getPackage(); unset($atts['baseinstalldir']); break; case 'ext': case 'php': $dest_dir = $this->config->get($atts['role'] . '_dir', null, $channel); break; case 'script': $dest_dir = $this->config->get('bin_dir', null, $channel); break; default: return $this->raiseError("Invalid role `$atts[role]' for file $file"); } $save_destdir = $dest_dir; if (!empty($atts['baseinstalldir'])) { $dest_dir .= DIRECTORY_SEPARATOR . $atts['baseinstalldir']; } if (dirname($file) != '.' && empty($atts['install-as'])) { $dest_dir .= DIRECTORY_SEPARATOR . dirname($file); } if (empty($atts['install-as'])) { $dest_file = $dest_dir . DIRECTORY_SEPARATOR . basename($file); } else { $dest_file = $dest_dir . DIRECTORY_SEPARATOR . $atts['install-as']; } $orig_file = $tmp_path . DIRECTORY_SEPARATOR . $file; // Clean up the DIRECTORY_SEPARATOR mess $ds2 = DIRECTORY_SEPARATOR . DIRECTORY_SEPARATOR; list($dest_file, $orig_file) = preg_replace(array('!\\\\+!', '!/!', "!$ds2+!"), array(DIRECTORY_SEPARATOR, DIRECTORY_SEPARATOR, DIRECTORY_SEPARATOR), array($dest_file, $orig_file)); $final_dest_file = $installed_as = $dest_file; if (isset($this->_options['packagingroot'])) { $installedas_dest_dir = dirname($final_dest_file); $installedas_dest_file = $dest_dir . DIRECTORY_SEPARATOR . '.tmp' . basename($final_dest_file); $final_dest_file = $this->_prependPath($final_dest_file, $this->_options['packagingroot']); } else { $installedas_dest_dir = dirname($final_dest_file); $installedas_dest_file = $installedas_dest_dir . DIRECTORY_SEPARATOR . '.tmp' . basename($final_dest_file); } $dest_dir = dirname($final_dest_file); $dest_file = $dest_dir . DIRECTORY_SEPARATOR . '.tmp' . basename($final_dest_file); if (preg_match('~/\.\.(/\|\\z)\|^\.\./~', str_replace('\\', '/', $dest_file))) { return $this->raiseError("SECURITY ERROR: file $file (installed to $dest_file) contains parent directory reference ..", PEAR_INSTALLER_FAILED); } // }}} if (empty($this->_options['register-only']) && (!file_exists($dest_dir) \|\| !is_dir($dest_dir))) { if (!$this->mkDirHier($dest_dir)) { return $this->raiseError("failed to mkdir $dest_dir", PEAR_INSTALLER_FAILED); } $this->log(3, "+ mkdir $dest_dir"); } // pretty much nothing happens if we are only registering the install if (empty($this->_options['register-only'])) { if (empty($atts['replacements'])) { if (!file_exists($orig_file)) { return $this->raiseError("file $orig_file does not exist", PEAR_INSTALLER_FAILED); } if (!@copy($orig_file, $dest_file)) { return $this->raiseError( "failed to write $dest_file: " . error_get_last()["message"], PEAR_INSTALLER_FAILED); } $this->log(3, "+ cp $orig_file $dest_file"); if (isset($atts['md5sum'])) { $md5sum = md5_file($dest_file); } } else { // {{{ file with replacements if (!file_exists($orig_file)) { return $this->raiseError("file does not exist", PEAR_INSTALLER_FAILED); } $contents = file_get_contents($orig_file); if ($contents === false) { $contents = ''; } if (isset($atts['md5sum'])) { $md5sum = md5($contents); } $subst_from = $subst_to = array(); foreach ($atts['replacements'] as $a) { $to = ''; if ($a['type'] == 'php-const') { if (preg_match('/^[a-z0-9_]+\\z/i', $a['to'])) { eval("\$to = $a[to];"); } else { if (!isset($options['soft'])) { $this->log(0, "invalid php-const replacement: $a[to]"); } continue; } } elseif ($a['type'] == 'pear-config') { if ($a['to'] == 'master_server') { $chan = $this->_registry->getChannel($channel); if (!PEAR::isError($chan)) { $to = $chan->getServer(); } else { $to = $this->config->get($a['to'], null, $channel); } } else { $to = $this->config->get($a['to'], null, $channel); } if (is_null($to)) { if (!isset($options['soft'])) { $this->log(0, "invalid pear-config replacement: $a[to]"); } continue; } } elseif ($a['type'] == 'package-info') { if ($t = $this->pkginfo->packageInfo($a['to'])) { $to = $t; } else { if (!isset($options['soft'])) { $this->log(0, "invalid package-info replacement: $a[to]"); } continue; } } if (!is_null($to)) { $subst_from[] = $a['from']; $subst_to[] = $to; } } $this->log(3, "doing ".sizeof($subst_from)." substitution(s) for $final_dest_file"); if (sizeof($subst_from)) { $contents = str_replace($subst_from, $subst_to, $contents); } $wp = @fopen($dest_file, "wb"); if (!is_resource($wp)) { return $this->raiseError( "failed to create $dest_file: " . error_get_last()["message"], PEAR_INSTALLER_FAILED); } if (@fwrite($wp, $contents) === false) { return $this->raiseError( "failed writing to $dest_file: " . error_get_last()["message"], PEAR_INSTALLER_FAILED); } fclose($wp); // }}} } // {{{ check the md5 if (isset($md5sum)) { if (strtolower($md5sum) === strtolower($atts['md5sum'])) { $this->log(2, "md5sum ok: $final_dest_file"); } else { if (empty($options['force'])) { // delete the file if (file_exists($dest_file)) { unlink($dest_file); } if (!isset($options['ignore-errors'])) { return $this->raiseError("bad md5sum for file $final_dest_file", PEAR_INSTALLER_FAILED); } if (!isset($options['soft'])) { $this->log(0, "warning : bad md5sum for file $final_dest_file"); } } else { if (!isset($options['soft'])) { $this->log(0, "warning : bad md5sum for file $final_dest_file"); } } } } // }}} // {{{ set file permissions if (!OS_WINDOWS) { if ($atts['role'] == 'script') { $mode = 0777 & ~(int)octdec($this->config->get('umask')); $this->log(3, "+ chmod +x $dest_file"); } else { $mode = 0666 & ~(int)octdec($this->config->get('umask')); } if ($atts['role'] != 'src') { $this->addFileOperation("chmod", array($mode, $dest_file)); if (!@chmod($dest_file, $mode)) { if (!isset($options['soft'])) { $this->log(0, "failed to change mode of $dest_file: " . error_get_last()["message"]); } } } } // }}} if ($atts['role'] == 'src') { rename($dest_file, $final_dest_file); $this->log(2, "renamed source file $dest_file to $final_dest_file"); } else { $this->addFileOperation("rename", array($dest_file, $final_dest_file, $atts['role'] == 'ext')); } } // Store the full path where the file was installed for easy unistall if ($atts['role'] != 'script') { $loc = $this->config->get($atts['role'] . '_dir'); } else { $loc = $this->config->get('bin_dir'); } if ($atts['role'] != 'src') { $this->addFileOperation("installed_as", array($file, $installed_as, $loc, dirname(substr($installedas_dest_file, strlen($loc))))); } //$this->log(2, "installed: $dest_file"); return PEAR_INSTALLER_OK; } // }}} // {{{ _installFile2() /* * @param PEAR_PackageFile_v1\|PEAR_PackageFile_v2 * @param string filename * @param array attributes from <file> tag in package.xml * @param string path to install the file in * @param array options from command-line * @access private / function _installFile2(&$pkg, $file, &$real_atts, $tmp_path, $options) { $atts = $real_atts; if (!isset($this->_registry)) { $this->_registry = &$this->config->getRegistry(); } $channel = $pkg->getChannel(); // {{{ assemble the destination paths if (!in_array($atts['attribs']['role'], PEAR_Installer_Role::getValidRoles($pkg->getPackageType()))) { return $this->raiseError('Invalid role `' . $atts['attribs']['role'] . "' for file $file"); } $role = &PEAR_Installer_Role::factory($pkg, $atts['attribs']['role'], $this->config); $err = $role->setup($this, $pkg, $atts['attribs'], $file); if (PEAR::isError($err)) { return $err; } if (!$role->isInstallable()) { return; } $info = $role->processInstallation($pkg, $atts['attribs'], $file, $tmp_path); if (PEAR::isError($info)) { return $info; } list($save_destdir, $dest_dir, $dest_file, $orig_file) = $info; if (preg_match('~/\.\.(/\|\\z)\|^\.\./~', str_replace('\\', '/', $dest_file))) { return $this->raiseError("SECURITY ERROR: file $file (installed to $dest_file) contains parent directory reference ..", PEAR_INSTALLER_FAILED); } $final_dest_file = $installed_as = $dest_file; if (isset($this->_options['packagingroot'])) { $final_dest_file = $this->_prependPath($final_dest_file, $this->_options['packagingroot']); } $dest_dir = dirname($final_dest_file); $dest_file = $dest_dir . DIRECTORY_SEPARATOR . '.tmp' . basename($final_dest_file); // }}} if (empty($this->_options['register-only'])) { if (!file_exists($dest_dir) \|\| !is_dir($dest_dir)) { if (!$this->mkDirHier($dest_dir)) { return $this->raiseError("failed to mkdir $dest_dir", PEAR_INSTALLER_FAILED); } $this->log(3, "+ mkdir $dest_dir"); } } $attribs = $atts['attribs']; unset($atts['attribs']); // pretty much nothing happens if we are only registering the install if (empty($this->_options['register-only'])) { if (!count($atts)) { // no tasks if (!file_exists($orig_file)) { return $this->raiseError("file $orig_file does not exist", PEAR_INSTALLER_FAILED); } if (!@copy($orig_file, $dest_file)) { return $this->raiseError( "failed to write $dest_file: " . error_get_last()["message"], PEAR_INSTALLER_FAILED); } $this->log(3, "+ cp $orig_file $dest_file"); if (isset($attribs['md5sum'])) { $md5sum = md5_file($dest_file); } } else { // file with tasks if (!file_exists($orig_file)) { return $this->raiseError("file $orig_file does not exist", PEAR_INSTALLER_FAILED); } $contents = file_get_contents($orig_file); if ($contents === false) { $contents = ''; } if (isset($attribs['md5sum'])) { $md5sum = md5($contents); } foreach ($atts as $tag => $raw) { $tag = str_replace(array($pkg->getTasksNs() . ':', '-'), array('', '_'), $tag); $task = "PEAR_Task_$tag"; $task = new $task($this->config, $this, PEAR_TASK_INSTALL); if (!$task->isScript()) { // scripts are only handled after installation $task->init($raw, $attribs, $pkg->getLastInstalledVersion()); $res = $task->startSession($pkg, $contents, $final_dest_file); if ($res === false) { continue; // skip this file } if (PEAR::isError($res)) { return $res; } $contents = $res; // save changes } $wp = @fopen($dest_file, "wb"); if (!is_resource($wp)) { return $this->raiseError( "failed to create $dest_file: " . error_get_last()["message"], PEAR_INSTALLER_FAILED); } if (fwrite($wp, $contents) === false) { return $this->raiseError( "failed writing to $dest_file: " . error_get_last()["message"], PEAR_INSTALLER_FAILED); } fclose($wp); } } // {{{ check the md5 if (isset($md5sum)) { // Make sure the original md5 sum matches with expected if (strtolower($md5sum) === strtolower($attribs['md5sum'])) { $this->log(2, "md5sum ok: $final_dest_file"); if (isset($contents)) { // set md5 sum based on $content in case any tasks were run. $real_atts['attribs']['md5sum'] = md5($contents); } } else { if (empty($options['force'])) { // delete the file if (file_exists($dest_file)) { unlink($dest_file); } if (!isset($options['ignore-errors'])) { return $this->raiseError("bad md5sum for file $final_dest_file", PEAR_INSTALLER_FAILED); } if (!isset($options['soft'])) { $this->log(0, "warning : bad md5sum for file $final_dest_file"); } } else { if (!isset($options['soft'])) { $this->log(0, "warning : bad md5sum for file $final_dest_file"); } } } } else { $real_atts['attribs']['md5sum'] = md5_file($dest_file); } // }}} // {{{ set file permissions if (!OS_WINDOWS) { if ($role->isExecutable()) { $mode = 0777 & ~(int)octdec($this->config->get('umask')); $this->log(3, "+ chmod +x $dest_file"); } else { $mode = 0666 & ~(int)octdec($this->config->get('umask')); } if ($attribs['role'] != 'src') { $this->addFileOperation("chmod", array($mode, $dest_file)); if (!@chmod($dest_file, $mode)) { if (!isset($options['soft'])) { $this->log(0, "failed to change mode of $dest_file: " . error_get_last()["message"]); } } } } // }}} if ($attribs['role'] == 'src') { rename($dest_file, $final_dest_file); $this->log(2, "renamed source file $dest_file to $final_dest_file"); } else { $this->addFileOperation("rename", array($dest_file, $final_dest_file, $role->isExtension())); } } // Store the full path where the file was installed for easy uninstall if ($attribs['role'] != 'src') { $loc = $this->config->get($role->getLocationConfig(), null, $channel); $this->addFileOperation('installed_as', array($file, $installed_as, $loc, dirname(substr($installed_as, strlen($loc))))); } //$this->log(2, "installed: $dest_file"); return PEAR_INSTALLER_OK; } // }}} // {{{ addFileOperation() /* * Add a file operation to the current file transaction. * * @see startFileTransaction() * @param string $type This can be one of: * - rename: rename a file ($data has 3 values) * - backup: backup an existing file ($data has 1 value) * - removebackup: clean up backups created during install ($data has 1 value) * - chmod: change permissions on a file ($data has 2 values) * - delete: delete a file ($data has 1 value) * - rmdir: delete a directory if empty ($data has 1 value) * - installed_as: mark a file as installed ($data has 4 values). * @param array $data For all file operations, this array must contain the * full path to the file or directory that is being operated on. For * the rename command, the first parameter must be the file to rename, * the second its new name, the third whether this is a PHP extension. * * The installed_as operation contains 4 elements in this order: * 1. Filename as listed in the filelist element from package.xml * 2. Full path to the installed file * 3. Full path from the php_dir configuration variable used in this * installation * 4. Relative path from the php_dir that this file is installed in / function addFileOperation($type, $data) { if (!is_array($data)) { return $this->raiseError('Internal Error: $data in addFileOperation' . ' must be an array, was ' . gettype($data)); } if ($type == 'chmod') { $octmode = decoct($data[0]); $this->log(3, "adding to transaction: $type $octmode $data[1]"); } else { $this->log(3, "adding to transaction: $type " . implode(" ", $data)); } $this->file_operations[] = array($type, $data); } // }}} // {{{ startFileTransaction() function startFileTransaction($rollback_in_case = false) { if (count($this->file_operations) && $rollback_in_case) { $this->rollbackFileTransaction(); } $this->file_operations = array(); } // }}} // {{{ commitFileTransaction() function commitFileTransaction() { // {{{ first, check permissions and such manually $errors = array(); foreach ($this->file_operations as $key => $tr) { list($type, $data) = $tr; switch ($type) { case 'rename': if (!file_exists($data[0])) { $errors[] = "cannot rename file $data[0], doesn't exist"; } // check that dest dir. is writable if (!is_writable(dirname($data[1]))) { $errors[] = "permission denied ($type): $data[1]"; } break; case 'chmod': // check that file is writable if (!is_writable($data[1])) { $errors[] = "permission denied ($type): $data[1] " . decoct($data[0]); } break; case 'delete': if (!file_exists($data[0])) { $this->log(2, "warning: file $data[0] doesn't exist, can't be deleted"); } // check that directory is writable if (file_exists($data[0])) { if (!is_writable(dirname($data[0]))) { $errors[] = "permission denied ($type): $data[0]"; } else { // make sure the file to be deleted can be opened for writing $fp = false; if (!is_dir($data[0]) && (!is_writable($data[0]) \|\| !($fp = @fopen($data[0], 'a')))) { $errors[] = "permission denied ($type): $data[0]"; } elseif ($fp) { fclose($fp); } } / Verify we are not deleting a file owned by another package * This can happen when a file moves from package A to B in * an upgrade ala http://pear.php.net/17986 / $info = array( 'package' => strtolower($this->pkginfo->getName()), 'channel' => strtolower($this->pkginfo->getChannel()), ); $result = $this->_registry->checkFileMap($data[0], $info, '1.1'); if (is_array($result)) { $res = array_diff($result, $info); if (!empty($res)) { $new = $this->_registry->getPackage($result[1], $result[0]); $this->file_operations[$key] = false; $pkginfoName = $this->pkginfo->getName(); $newChannel = $new->getChannel(); $newPackage = $new->getName(); $this->log(3, "file $data[0] was scheduled for removal from $pkginfoName but is owned by $newChannel/$newPackage, removal has been cancelled."); } } } break; } } // }}} $n = count($this->file_operations); $this->log(2, "about to commit $n file operations for " . $this->pkginfo->getName()); $m = count($errors); if ($m > 0) { foreach ($errors as $error) { if (!isset($this->_options['soft'])) { $this->log(1, $error); } } if (!isset($this->_options['ignore-errors'])) { return false; } } $this->_dirtree = array(); // {{{ really commit the transaction foreach ($this->file_operations as $i => $tr) { if (!$tr) { // support removal of non-existing backups continue; } list($type, $data) = $tr; switch ($type) { case 'backup': if (!file_exists($data[0])) { $this->file_operations[$i] = false; break; } if (!@copy($data[0], $data[0] . '.bak')) { $this->log(1, 'Could not copy ' . $data[0] . ' to ' . $data[0] . '.bak ' . error_get_last()["message"]); return false; } $this->log(3, "+ backup $data[0] to $data[0].bak"); break; case 'removebackup': if (file_exists($data[0] . '.bak') && is_writable($data[0] . '.bak')) { unlink($data[0] . '.bak'); $this->log(3, "+ rm backup of $data[0] ($data[0].bak)"); } break; case 'rename': $test = file_exists($data[1]) ? @unlink($data[1]) : null; if (!$test && file_exists($data[1])) { if ($data[2]) { $extra = ', this extension must be installed manually. Rename to "' . basename($data[1]) . '"'; } else { $extra = ''; } if (!isset($this->_options['soft'])) { $this->log(1, 'Could not delete ' . $data[1] . ', cannot rename ' . $data[0] . $extra); } if (!isset($this->_options['ignore-errors'])) { return false; } } // permissions issues with rename - copy() is far superior $perms = @fileperms($data[0]); if (!@copy($data[0], $data[1])) { $this->log(1, 'Could not rename ' . $data[0] . ' to ' . $data[1] . ' ' . error_get_last()["message"]); return false; } // copy over permissions, otherwise they are lost @chmod($data[1], $perms); @unlink($data[0]); $this->log(3, "+ mv $data[0] $data[1]"); break; case 'chmod': if (!@chmod($data[1], $data[0])) { $this->log(1, 'Could not chmod ' . $data[1] . ' to ' . decoct($data[0]) . ' ' . error_get_last()["message"]); return false; } $octmode = decoct($data[0]); $this->log(3, "+ chmod $octmode $data[1]"); break; case 'delete': if (file_exists($data[0])) { if (!@unlink($data[0])) { $this->log(1, 'Could not delete ' . $data[0] . ' ' . error_get_last()["message"]); return false; } $this->log(3, "+ rm $data[0]"); } break; case 'rmdir': if (file_exists($data[0])) { do { $testme = opendir($data[0]); while (false !== ($entry = readdir($testme))) { if ($entry == '.' \|\| $entry == '..') { continue; } closedir($testme); break 2; // this directory is not empty and can't be // deleted } closedir($testme); if (!@rmdir($data[0])) { $this->log(1, 'Could not rmdir ' . $data[0] . ' ' . error_get_last()["message"]); return false; } $this->log(3, "+ rmdir $data[0]"); } while (false); } break; case 'installed_as': $this->pkginfo->setInstalledAs($data[0], $data[1]); if (!isset($this->_dirtree[dirname($data[1])])) { $this->_dirtree[dirname($data[1])] = true; $this->pkginfo->setDirtree(dirname($data[1])); while(!empty($data[3]) && dirname($data[3]) != $data[3] && $data[3] != '/' && $data[3] != '\\') { $this->pkginfo->setDirtree($pp = $this->_prependPath($data[3], $data[2])); $this->_dirtree[$pp] = true; $data[3] = dirname($data[3]); } } break; } } // }}} $this->log(2, "successfully committed $n file operations"); $this->file_operations = array(); return true; } // }}} // {{{ rollbackFileTransaction() function rollbackFileTransaction() { $n = count($this->file_operations); $this->log(2, "rolling back $n file operations"); foreach ($this->file_operations as $tr) { list($type, $data) = $tr; switch ($type) { case 'backup': if (file_exists($data[0] . '.bak')) { if (file_exists($data[0] && is_writable($data[0]))) { unlink($data[0]); } @copy($data[0] . '.bak', $data[0]); $this->log(3, "+ restore $data[0] from $data[0].bak"); } break; case 'removebackup': if (file_exists($data[0] . '.bak') && is_writable($data[0] . '.bak')) { unlink($data[0] . '.bak'); $this->log(3, "+ rm backup of $data[0] ($data[0].bak)"); } break; case 'rename': @unlink($data[0]); $this->log(3, "+ rm $data[0]"); break; case 'mkdir': @rmdir($data[0]); $this->log(3, "+ rmdir $data[0]"); break; case 'chmod': break; case 'delete': break; case 'installed_as': $this->pkginfo->setInstalledAs($data[0], false); break; } } $this->pkginfo->resetDirtree(); $this->file_operations = array(); } // }}} // {{{ mkDirHier($dir) function mkDirHier($dir) { $this->addFileOperation('mkdir', array($dir)); return parent::mkDirHier($dir); } // }}} // {{{ _parsePackageXml() function _parsePackageXml(&$descfile) { // Parse xml file ----------------------------------------------- $pkg = new PEAR_PackageFile($this->config, $this->debug); PEAR::staticPushErrorHandling(PEAR_ERROR_RETURN); $p = &$pkg->fromAnyFile($descfile, PEAR_VALIDATE_INSTALLING); PEAR::staticPopErrorHandling(); if (PEAR::isError($p)) { if (is_array($p->getUserInfo())) { foreach ($p->getUserInfo() as $err) { $loglevel = $err['level'] == 'error' ? 0 : 1; if (!isset($this->_options['soft'])) { $this->log($loglevel, ucfirst($err['level']) . ': ' . $err['message']); } } } return $this->raiseError('Installation failed: invalid package file'); } $descfile = $p->getPackageFile(); return $p; } // }}} /* * Set the list of PEAR_Downloader_Package objects to allow more sane * dependency validation * @param array / function setDownloadedPackages(&$pkgs) { PEAR::pushErrorHandling(PEAR_ERROR_RETURN); $err = $this->analyzeDependencies($pkgs); PEAR::popErrorHandling(); if (PEAR::isError($err)) { return $err; } $this->_downloadedPackages = &$pkgs; } /* * Set the list of PEAR_Downloader_Package objects to allow more sane * dependency validation * @param array / function setUninstallPackages(&$pkgs) { $this->_downloadedPackages = &$pkgs; } function getInstallPackages() { return $this->_downloadedPackages; } // {{{ install() /* * Installs the files within the package file specified. * * @param string\|PEAR_Downloader_Package $pkgfile path to the package file, * or a pre-initialized packagefile object * @param array $options * recognized options: * - installroot : optional prefix directory for installation * - force : force installation * - register-only : update registry but don't install files * - upgrade : upgrade existing install * - soft : fail silently * - nodeps : ignore dependency conflicts/missing dependencies * - alldeps : install all dependencies * - onlyreqdeps : install only required dependencies * * @return array\|PEAR_Error package info if successful / function install($pkgfile, $options = array()) { $this->_options = $options; $this->_registry = &$this->config->getRegistry(); if (is_object($pkgfile)) { $dlpkg = &$pkgfile; $pkg = $pkgfile->getPackageFile(); $pkgfile = $pkg->getArchiveFile(); $descfile = $pkg->getPackageFile(); } else { $descfile = $pkgfile; $pkg = $this->_parsePackageXml($descfile); if (PEAR::isError($pkg)) { return $pkg; } } $tmpdir = dirname($descfile); if (realpath($descfile) != realpath($pkgfile)) { // Use the temp_dir since $descfile can contain the download dir path $tmpdir = $this->config->get('temp_dir', null, 'pear.php.net'); $tmpdir = System::mktemp('-d -t "' . $tmpdir . '"'); $tar = new Archive_Tar($pkgfile); if (!$tar->extract($tmpdir)) { return $this->raiseError("unable to unpack $pkgfile"); } } $pkgname = $pkg->getName(); $channel = $pkg->getChannel(); if (isset($options['installroot'])) { $this->config->setInstallRoot($options['installroot']); $this->_registry = &$this->config->getRegistry(); $installregistry = &$this->_registry; $this->installroot = ''; // all done automagically now $php_dir = $this->config->get('php_dir', null, $channel); } else { $this->config->setInstallRoot(false); $this->_registry = &$this->config->getRegistry(); if (isset($this->_options['packagingroot'])) { $regdir = $this->_prependPath( $this->config->get('php_dir', null, 'pear.php.net'), $this->_options['packagingroot']); $metadata_dir = $this->config->get('metadata_dir', null, 'pear.php.net'); if ($metadata_dir) { $metadata_dir = $this->_prependPath( $metadata_dir, $this->_options['packagingroot']); } $packrootphp_dir = $this->_prependPath( $this->config->get('php_dir', null, $channel), $this->_options['packagingroot']); $installregistry = new PEAR_Registry($regdir, false, false, $metadata_dir); if (!$installregistry->channelExists($channel, true)) { // we need to fake a channel-discover of this channel $chanobj = $this->_registry->getChannel($channel, true); $installregistry->addChannel($chanobj); } $php_dir = $packrootphp_dir; } else { $installregistry = &$this->_registry; $php_dir = $this->config->get('php_dir', null, $channel); } $this->installroot = ''; } // {{{ checks to do when not in "force" mode if (empty($options['force']) && (file_exists($this->config->get('php_dir')) && is_dir($this->config->get('php_dir')))) { $testp = $channel == 'pear.php.net' ? $pkgname : array($channel, $pkgname); $instfilelist = $pkg->getInstallationFileList(true); if (PEAR::isError($instfilelist)) { return $instfilelist; } // ensure we have the most accurate registry $installregistry->flushFileMap(); $test = $installregistry->checkFileMap($instfilelist, $testp, '1.1'); if (PEAR::isError($test)) { return $test; } if (sizeof($test)) { $pkgs = $this->getInstallPackages(); $found = false; foreach ($pkgs as $param) { if ($pkg->isSubpackageOf($param)) { $found = true; break; } } if ($found) { // subpackages can conflict with earlier versions of parent packages $parentreg = $installregistry->packageInfo($param->getPackage(), null, $param->getChannel()); $tmp = $test; foreach ($tmp as $file => $info) { if (is_array($info)) { if (strtolower($info[1]) == strtolower($param->getPackage()) && strtolower($info[0]) == strtolower($param->getChannel()) ) { if (isset($parentreg['filelist'][$file])) { unset($parentreg['filelist'][$file]); } else{ $pos = strpos($file, '/'); $basedir = substr($file, 0, $pos); $file2 = substr($file, $pos + 1); if (isset($parentreg['filelist'][$file2]['baseinstalldir']) && $parentreg['filelist'][$file2]['baseinstalldir'] === $basedir ) { unset($parentreg['filelist'][$file2]); } } unset($test[$file]); } } else { if (strtolower($param->getChannel()) != 'pear.php.net') { continue; } if (strtolower($info) == strtolower($param->getPackage())) { if (isset($parentreg['filelist'][$file])) { unset($parentreg['filelist'][$file]); } else{ $pos = strpos($file, '/'); $basedir = substr($file, 0, $pos); $file2 = substr($file, $pos + 1); if (isset($parentreg['filelist'][$file2]['baseinstalldir']) && $parentreg['filelist'][$file2]['baseinstalldir'] === $basedir ) { unset($parentreg['filelist'][$file2]); } } unset($test[$file]); } } } $pfk = new PEAR_PackageFile($this->config); $parentpkg = &$pfk->fromArray($parentreg); $installregistry->updatePackage2($parentpkg); } if ($param->getChannel() == 'pecl.php.net' && isset($options['upgrade'])) { $tmp = $test; foreach ($tmp as $file => $info) { if (is_string($info)) { // pear.php.net packages are always stored as strings if (strtolower($info) == strtolower($param->getPackage())) { // upgrading existing package unset($test[$file]); } } } } if (count($test)) { $msg = "$channel/$pkgname: conflicting files found:\n"; $longest = max(array_map("strlen", array_keys($test))); $fmt = "%{$longest}s (%s)\n"; foreach ($test as $file => $info) { if (!is_array($info)) { $info = array('pear.php.net', $info); } $info = $info[0] . '/' . $info[1]; $msg .= sprintf($fmt, $file, $info); } if (!isset($options['ignore-errors'])) { return $this->raiseError($msg); } if (!isset($options['soft'])) { $this->log(0, "WARNING: $msg"); } } } } // }}} $this->startFileTransaction(); $usechannel = $channel; if ($channel == 'pecl.php.net') { $test = $installregistry->packageExists($pkgname, $channel); if (!$test) { $test = $installregistry->packageExists($pkgname, 'pear.php.net'); $usechannel = 'pear.php.net'; } } else { $test = $installregistry->packageExists($pkgname, $channel); } if (empty($options['upgrade']) && empty($options['soft'])) { // checks to do only when installing new packages if (empty($options['force']) && $test) { return $this->raiseError("$channel/$pkgname is already installed"); } } else { // Upgrade if ($test) { $v1 = $installregistry->packageInfo($pkgname, 'version', $usechannel); $v2 = $pkg->getVersion(); $cmp = version_compare("$v1", "$v2", 'gt'); if (empty($options['force']) && !version_compare("$v2", "$v1", 'gt')) { return $this->raiseError("upgrade to a newer version ($v2 is not newer than $v1)"); } } } // Do cleanups for upgrade and install, remove old release's files first if ($test && empty($options['register-only'])) { // when upgrading, remove old release's files first: if (PEAR::isError($err = $this->_deletePackageFiles($pkgname, $usechannel, true))) { if (!isset($options['ignore-errors'])) { return $this->raiseError($err); } if (!isset($options['soft'])) { $this->log(0, 'WARNING: ' . $err->getMessage()); } } else { $backedup = $err; } } // {{{ Copy files to dest dir --------------------------------------- // info from the package it self we want to access from _installFile $this->pkginfo = &$pkg; // used to determine whether we should build any C code $this->source_files = 0; $savechannel = $this->config->get('default_channel'); if (empty($options['register-only']) && !is_dir($php_dir)) { if (PEAR::isError(System::mkdir(array('-p'), $php_dir))) { return $this->raiseError("no installation destination directory '$php_dir'\n"); } } if (substr($pkgfile, -4) != '.xml') { $tmpdir .= DIRECTORY_SEPARATOR . $pkgname . '-' . $pkg->getVersion(); } $this->configSet('default_channel', $channel); // {{{ install files $ver = $pkg->getPackagexmlVersion(); if (version_compare($ver, '2.0', '>=')) { $filelist = $pkg->getInstallationFilelist(); } else { $filelist = $pkg->getFileList(); } if (PEAR::isError($filelist)) { return $filelist; } $p = &$installregistry->getPackage($pkgname, $channel); $dirtree = (empty($options['register-only']) && $p) ? $p->getDirTree() : false; $pkg->resetFilelist(); $pkg->setLastInstalledVersion($installregistry->packageInfo($pkg->getPackage(), 'version', $pkg->getChannel())); foreach ($filelist as $file => $atts) { $this->expectError(PEAR_INSTALLER_FAILED); if ($pkg->getPackagexmlVersion() == '1.0') { $res = $this->_installFile($file, $atts, $tmpdir, $options); } else { $res = $this->_installFile2($pkg, $file, $atts, $tmpdir, $options); } $this->popExpect(); if (PEAR::isError($res)) { if (empty($options['ignore-errors'])) { $this->rollbackFileTransaction(); if ($res->getMessage() == "file does not exist") { $this->raiseError("file $file in package.xml does not exist"); } return $this->raiseError($res); } if (!isset($options['soft'])) { $this->log(0, "Warning: " . $res->getMessage()); } } $real = isset($atts['attribs']) ? $atts['attribs'] : $atts; if ($res == PEAR_INSTALLER_OK && $real['role'] != 'src') { // Register files that were installed $pkg->installedFile($file, $atts); } } // }}} // {{{ compile and install source files if ($this->source_files > 0 && empty($options['nobuild'])) { $configureoptions = empty($options['configureoptions']) ? '' : $options['configureoptions']; if (PEAR::isError($err = $this->_compileSourceFiles($savechannel, $pkg, $configureoptions))) { return $err; } } // }}} if (isset($backedup)) { $this->_removeBackups($backedup); } if (!$this->commitFileTransaction()) { $this->rollbackFileTransaction(); $this->configSet('default_channel', $savechannel); return $this->raiseError("commit failed", PEAR_INSTALLER_FAILED); } // }}} $ret = false; $installphase = 'install'; $oldversion = false; // {{{ Register that the package is installed ----------------------- if (empty($options['upgrade'])) { // if 'force' is used, replace the info in registry $usechannel = $channel; if ($channel == 'pecl.php.net') { $test = $installregistry->packageExists($pkgname, $channel); if (!$test) { $test = $installregistry->packageExists($pkgname, 'pear.php.net'); $usechannel = 'pear.php.net'; } } else { $test = $installregistry->packageExists($pkgname, $channel); } if (!empty($options['force']) && $test) { $oldversion = $installregistry->packageInfo($pkgname, 'version', $usechannel); $installregistry->deletePackage($pkgname, $usechannel); } $ret = $installregistry->addPackage2($pkg); } else { if ($dirtree) { $this->startFileTransaction(); // attempt to delete empty directories uksort($dirtree, array($this, '_sortDirs')); foreach($dirtree as $dir => $notused) { $this->addFileOperation('rmdir', array($dir)); } $this->commitFileTransaction(); } $usechannel = $channel; if ($channel == 'pecl.php.net') { $test = $installregistry->packageExists($pkgname, $channel); if (!$test) { $test = $installregistry->packageExists($pkgname, 'pear.php.net'); $usechannel = 'pear.php.net'; } } else { $test = $installregistry->packageExists($pkgname, $channel); } // new: upgrade installs a package if it isn't installed if (!$test) { $ret = $installregistry->addPackage2($pkg); } else { if ($usechannel != $channel) { $installregistry->deletePackage($pkgname, $usechannel); $ret = $installregistry->addPackage2($pkg); } else { $ret = $installregistry->updatePackage2($pkg); } $installphase = 'upgrade'; } } if (!$ret) { $this->configSet('default_channel', $savechannel); return $this->raiseError("Adding package $channel/$pkgname to registry failed"); } // }}} $this->configSet('default_channel', $savechannel); if (class_exists('PEAR_Task_Common')) { // this is auto-included if any tasks exist if (PEAR_Task_Common::hasPostinstallTasks()) { PEAR_Task_Common::runPostinstallTasks($installphase); } } return $pkg->toArray(true); } // }}} // {{{ _compileSourceFiles() /* * @param string * @param PEAR_PackageFile_v1\|PEAR_PackageFile_v2 * @param mixed[] $configureoptions / function _compileSourceFiles($savechannel, &$filelist, $configureoptions) { require_once 'PEAR/Builder.php'; $this->log(1, "$this->source_files source files, building"); $bob = new PEAR_Builder($configureoptions, $this->ui); $bob->debug = $this->debug; $built = $bob->build($filelist, array(&$this, '_buildCallback')); if (PEAR::isError($built)) { $this->rollbackFileTransaction(); $this->configSet('default_channel', $savechannel); return $built; } $this->log(1, "\nBuild process completed successfully"); foreach ($built as $ext) { $bn = basename($ext['file']); list($_ext_name, $_ext_suff) = explode('.', $bn); if ($_ext_suff == 'so' \|\| $_ext_suff == 'dll') { if (extension_loaded($_ext_name)) { return $this->raiseError("Extension '$_ext_name' already loaded. " . 'Please unload it in your php.ini file ' . 'prior to install or upgrade'); } $role = 'ext'; } else { $role = 'src'; } $dest = $ext['dest']; $packagingroot = ''; if (isset($this->_options['packagingroot'])) { $packagingroot = $this->_options['packagingroot']; } $copyto = $this->_prependPath($dest, $packagingroot); $extra = $copyto != $dest ? " as '$copyto'" : ''; $this->log(1, "Installing '$dest'$extra"); $copydir = dirname($copyto); // pretty much nothing happens if we are only registering the install if (empty($this->_options['register-only'])) { if (!file_exists($copydir) \|\| !is_dir($copydir)) { if (!$this->mkDirHier($copydir)) { return $this->raiseError("failed to mkdir $copydir", PEAR_INSTALLER_FAILED); } $this->log(3, "+ mkdir $copydir"); } if (!@copy($ext['file'], $copyto)) { return $this->raiseError( "failed to write $copyto (" . error_get_last()["message"] . ")", PEAR_INSTALLER_FAILED); } $this->log(3, "+ cp $ext[file] $copyto"); $this->addFileOperation('rename', array($ext['file'], $copyto)); if (!OS_WINDOWS) { $mode = 0666 & ~(int)octdec($this->config->get('umask')); $this->addFileOperation('chmod', array($mode, $copyto)); if (!@chmod($copyto, $mode)) { $this->log(0, "failed to change mode of $copyto (" . error_get_last()["message"] . ")"); } } } $data = array( 'role' => $role, 'name' => $bn, 'installed_as' => $dest, 'php_api' => $ext['php_api'], 'zend_mod_api' => $ext['zend_mod_api'], 'zend_ext_api' => $ext['zend_ext_api'], ); if ($filelist->getPackageXmlVersion() == '1.0') { $filelist->installedFile($bn, $data); } else { $filelist->installedFile($bn, array('attribs' => $data)); } } } // }}} function &getUninstallPackages() { return $this->_downloadedPackages; } // {{{ uninstall() /* * Uninstall a package * * This method removes all files installed by the application, and then * removes any empty directories. * @param string package name * @param array Command-line options. Possibilities include: * * - installroot: base installation dir, if not the default * - register-only : update registry but don't remove files * - nodeps: do not process dependencies of other packages to ensure * uninstallation does not break things / function uninstall($package, $options = array()) { $installRoot = isset($options['installroot']) ? $options['installroot'] : ''; $this->config->setInstallRoot($installRoot); $this->installroot = ''; $this->_registry = &$this->config->getRegistry(); if (is_object($package)) { $channel = $package->getChannel(); $pkg = $package; $package = $pkg->getPackage(); } else { $pkg = false; $info = $this->_registry->parsePackageName($package, $this->config->get('default_channel')); $channel = $info['channel']; $package = $info['package']; } $savechannel = $this->config->get('default_channel'); $this->configSet('default_channel', $channel); if (!is_object($pkg)) { $pkg = $this->_registry->getPackage($package, $channel); } if (!$pkg) { $this->configSet('default_channel', $savechannel); return $this->raiseError($this->_registry->parsedPackageNameToString( array( 'channel' => $channel, 'package' => $package ), true) . ' not installed'); } if ($pkg->getInstalledBinary()) { // this is just an alias for a binary package return $this->_registry->deletePackage($package, $channel); } $filelist = $pkg->getFilelist(); PEAR::staticPushErrorHandling(PEAR_ERROR_RETURN); if (!class_exists('PEAR_Dependency2')) { require_once 'PEAR/Dependency2.php'; } $depchecker = new PEAR_Dependency2($this->config, $options, array('channel' => $channel, 'package' => $package), PEAR_VALIDATE_UNINSTALLING); $e = $depchecker->validatePackageUninstall($this); PEAR::staticPopErrorHandling(); if (PEAR::isError($e)) { if (!isset($options['ignore-errors'])) { return $this->raiseError($e); } if (!isset($options['soft'])) { $this->log(0, 'WARNING: ' . $e->getMessage()); } } elseif (is_array($e)) { if (!isset($options['soft'])) { $this->log(0, $e[0]); } } $this->pkginfo = &$pkg; // pretty much nothing happens if we are only registering the uninstall if (empty($options['register-only'])) { // {{{ Delete the files $this->startFileTransaction(); PEAR::pushErrorHandling(PEAR_ERROR_RETURN); if (PEAR::isError($err = $this->_deletePackageFiles($package, $channel))) { PEAR::popErrorHandling(); $this->rollbackFileTransaction(); $this->configSet('default_channel', $savechannel); if (!isset($options['ignore-errors'])) { return $this->raiseError($err); } if (!isset($options['soft'])) { $this->log(0, 'WARNING: ' . $err->getMessage()); } } else { PEAR::popErrorHandling(); } if (!$this->commitFileTransaction()) { $this->rollbackFileTransaction(); if (!isset($options['ignore-errors'])) { return $this->raiseError("uninstall failed"); } if (!isset($options['soft'])) { $this->log(0, 'WARNING: uninstall failed'); } } else { $this->startFileTransaction(); $dirtree = $pkg->getDirTree(); if ($dirtree === false) { $this->configSet('default_channel', $savechannel); return $this->_registry->deletePackage($package, $channel); } // attempt to delete empty directories uksort($dirtree, array($this, '_sortDirs')); foreach($dirtree as $dir => $notused) { $this->addFileOperation('rmdir', array($dir)); } if (!$this->commitFileTransaction()) { $this->rollbackFileTransaction(); if (!isset($options['ignore-errors'])) { return $this->raiseError("uninstall failed"); } if (!isset($options['soft'])) { $this->log(0, 'WARNING: uninstall failed'); } } } // }}} } $this->configSet('default_channel', $savechannel); // Register that the package is no longer installed return $this->_registry->deletePackage($package, $channel); } /* * Sort a list of arrays of array(downloaded packagefilename) by dependency. * * It also removes duplicate dependencies * @param array an array of PEAR_PackageFile_v[1/2] objects * @return array\|PEAR_Error array of array(packagefilename, package.xml contents) */ function sortPackagesForUninstall(&$packages) { $this->_dependencyDB = &PEAR_DependencyDB::singleton($this->config); if (PEAR::isError($this->_dependencyDB)) { return $this->_dependencyDB; } usort($packages, array(&$this, '_sortUninstall')); } function _sortUninstall($a, $b) { if (!$a->getDeps() && !$b->getDeps()) { return 0; // neither package has dependencies, order is insignificant } if ($a->getDeps() && !$b->getDeps()) { return -1; // $a must be installed after $b because $a has dependencies } if (!$a->getDeps() && $b->getDeps()) { return 1; // $b must be installed after $a because $b has dependencies } // both packages have dependencies if ($this->_dependencyDB->dependsOn($a, $b)) { return -1; } if ($this->_dependencyDB->dependsOn($b, $a)) { return 1; } return 0; } // }}} // {{{ _sortDirs() function _sortDirs($a, $b) { if (strnatcmp($a, $b) == -1) return 1; if (strnatcmp($a, $b) == 1) return -1; return 0; } // }}} // {{{ _buildCallback() function _buildCallback($what, $data) { if (($what == 'cmdoutput' && $this->debug > 1) \|\| ($what == 'output' && $this->debug > 0)) { $this->ui->outputData(rtrim($data), 'build'); } } // }}} } Back

Edit File : Installer.php | Size : 68.45 KB

<?php
/**
 * PEAR_Installer
 *
 * PHP versions 4 and 5
 *
 * @category   pear
 * @package    PEAR
 * @author     Stig Bakken <ssb@php.net>
 * @author     Tomas V.V. Cox <cox@idecnet.com>
 * @author     Martin Jansen <mj@php.net>
 * @author     Greg Beaver <cellog@php.net>
 * @copyright  1997-2009 The Authors
 * @license    http://opensource.org/licenses/bsd-license.php New BSD License
 * @link       http://pear.php.net/package/PEAR
 * @since      File available since Release 0.1
 */

/**
 * Used for installation groups in package.xml 2.0 and platform exceptions
 */
require_once 'OS/Guess.php';
require_once 'PEAR/Downloader.php';

define('PEAR_INSTALLER_NOBINARY', -240);
/**
 * Administration class used to install PEAR packages and maintain the
 * installed package database.
 *
 * @category   pear
 * @package    PEAR
 * @author     Stig Bakken <ssb@php.net>
 * @author     Tomas V.V. Cox <cox@idecnet.com>
 * @author     Martin Jansen <mj@php.net>
 * @author     Greg Beaver <cellog@php.net>
 * @copyright  1997-2009 The Authors
 * @license    http://opensource.org/licenses/bsd-license.php New BSD License
 * @version    Release: 1.10.16
 * @link       http://pear.php.net/package/PEAR
 * @since      Class available since Release 0.1
 */
class PEAR_Installer extends PEAR_Downloader
{
    // {{{ properties

/** name of the package directory, for example Foo-1.0
     * @var string
     */
    var $pkgdir;

/** directory where PHP code files go
     * @var string
     */
    var $phpdir;

/** directory where PHP extension files go
     * @var string
     */
    var $extdir;

/** directory where documentation goes
     * @var string
     */
    var $docdir;

/** installation root directory (ala PHP's INSTALL_ROOT or
     * automake's DESTDIR
     * @var string
     */
    var $installroot = '';

/** debug level
     * @var int
     */
    var $debug = 1;

/** temporary directory
     * @var string
     */
    var $tmpdir;

/**
     * PEAR_Registry object used by the installer
     * @var PEAR_Registry
     */
    var $registry;

/**
     * array of PEAR_Downloader_Packages
     * @var array
     */
    var $_downloadedPackages;

/** List of file transactions queued for an install/upgrade/uninstall.
     *
     *  Format:
     *    array(
     *      0 => array("rename => array("from-file", "to-file")),
     *      1 => array("delete" => array("file-to-delete")),
     *      ...
     *    )
     *
     * @var array
     */
    var $file_operations = array();

// }}}

// {{{ constructor

/**
     * PEAR_Installer constructor.
     *
     * @param object $ui user interface object (instance of PEAR_Frontend_*)
     *
     * @access public
     */
    function __construct(&$ui)
    {
        parent::__construct($ui, array(), null);
        $this->setFrontendObject($ui);
        $this->debug = $this->config->get('verbose');
    }

function setOptions($options)
    {
        $this->_options = $options;
    }

function setConfig(&$config)
    {
        $this->config    = &$config;
        $this->_registry = &$config->getRegistry();
    }

// }}}

function _removeBackups($files)
    {
        foreach ($files as $path) {
            $this->addFileOperation('removebackup', array($path));
        }
    }

// {{{ _deletePackageFiles()

/**
     * Delete a package's installed files, does not remove empty directories.
     *
     * @param string package name
     * @param string channel name
     * @param bool if true, then files are backed up first
     * @return bool TRUE on success, or a PEAR error on failure
     * @access protected
     */
    function _deletePackageFiles($package, $channel = false, $backup = false)
    {
        if (!$channel) {
            $channel = 'pear.php.net';
        }

if (!strlen($package)) {
            return $this->raiseError("No package to uninstall given");
        }

if (strtolower($package) == 'pear' && $channel == 'pear.php.net') {
            // to avoid race conditions, include all possible needed files
            require_once 'PEAR/Task/Common.php';
            require_once 'PEAR/Task/Replace.php';
            require_once 'PEAR/Task/Unixeol.php';
            require_once 'PEAR/Task/Windowseol.php';
            require_once 'PEAR/PackageFile/v1.php';
            require_once 'PEAR/PackageFile/v2.php';
            require_once 'PEAR/PackageFile/Generator/v1.php';
            require_once 'PEAR/PackageFile/Generator/v2.php';
        }

$filelist = $this->_registry->packageInfo($package, 'filelist', $channel);
        if ($filelist == null) {
            return $this->raiseError("$channel/$package not installed");
        }

$ret = array();
        foreach ($filelist as $file => $props) {
            if (empty($props['installed_as'])) {
                continue;
            }

$path = $props['installed_as'];
            if ($backup) {
                $this->addFileOperation('backup', array($path));
                $ret[] = $path;
            }

$this->addFileOperation('delete', array($path));
        }

if ($backup) {
            return $ret;
        }

return true;
    }

// }}}
    // {{{ _installFile()

/**
     * @param string filename
     * @param array attributes from <file> tag in package.xml
     * @param string path to install the file in
     * @param array options from command-line
     * @access private
     */
    function _installFile($file, $atts, $tmp_path, $options)
    {
        // {{{ return if this file is meant for another platform
        static $os;
        if (!isset($this->_registry)) {
            $this->_registry = &$this->config->getRegistry();
        }

if (isset($atts['platform'])) {
            if (empty($os)) {
                $os = new OS_Guess();
            }

if (strlen($atts['platform']) && $atts['platform'][0] == '!') {
                $negate   = true;
                $platform = substr($atts['platform'], 1);
            } else {
                $negate    = false;
                $platform = $atts['platform'];
            }

if ((bool) $os->matchSignature($platform) === $negate) {
                $this->log(3, "skipped $file (meant for $atts[platform], we are ".$os->getSignature().")");
                return PEAR_INSTALLER_SKIPPED;
            }
        }
        // }}}

$channel = $this->pkginfo->getChannel();
        // {{{ assemble the destination paths
        switch ($atts['role']) {
            case 'src':
            case 'extsrc':
                $this->source_files++;
                return;
            case 'doc':
            case 'data':
            case 'test':
                $dest_dir = $this->config->get($atts['role'] . '_dir', null, $channel) .
                            DIRECTORY_SEPARATOR . $this->pkginfo->getPackage();
                unset($atts['baseinstalldir']);
                break;
            case 'ext':
            case 'php':
                $dest_dir = $this->config->get($atts['role'] . '_dir', null, $channel);
                break;
            case 'script':
                $dest_dir = $this->config->get('bin_dir', null, $channel);
                break;
            default:
                return $this->raiseError("Invalid role `$atts[role]' for file $file");
        }

$save_destdir = $dest_dir;
        if (!empty($atts['baseinstalldir'])) {
            $dest_dir .= DIRECTORY_SEPARATOR . $atts['baseinstalldir'];
        }

if (dirname($file) != '.' && empty($atts['install-as'])) {
            $dest_dir .= DIRECTORY_SEPARATOR . dirname($file);
        }

if (empty($atts['install-as'])) {
            $dest_file = $dest_dir . DIRECTORY_SEPARATOR . basename($file);
        } else {
            $dest_file = $dest_dir . DIRECTORY_SEPARATOR . $atts['install-as'];
        }
        $orig_file = $tmp_path . DIRECTORY_SEPARATOR . $file;

// Clean up the DIRECTORY_SEPARATOR mess
        $ds2 = DIRECTORY_SEPARATOR . DIRECTORY_SEPARATOR;
        list($dest_file, $orig_file) = preg_replace(array('!\\\\+!', '!/!', "!$ds2+!"),
                                                    array(DIRECTORY_SEPARATOR,
                                                          DIRECTORY_SEPARATOR,
                                                          DIRECTORY_SEPARATOR),
                                                    array($dest_file, $orig_file));
        $final_dest_file = $installed_as = $dest_file;
        if (isset($this->_options['packagingroot'])) {
            $installedas_dest_dir  = dirname($final_dest_file);
            $installedas_dest_file = $dest_dir . DIRECTORY_SEPARATOR . '.tmp' . basename($final_dest_file);
            $final_dest_file = $this->_prependPath($final_dest_file, $this->_options['packagingroot']);
        } else {
            $installedas_dest_dir  = dirname($final_dest_file);
            $installedas_dest_file = $installedas_dest_dir . DIRECTORY_SEPARATOR . '.tmp' . basename($final_dest_file);
        }

$dest_dir  = dirname($final_dest_file);
        $dest_file = $dest_dir . DIRECTORY_SEPARATOR . '.tmp' . basename($final_dest_file);
        if (preg_match('~/\.\.(/|\\z)|^\.\./~', str_replace('\\', '/', $dest_file))) {
            return $this->raiseError("SECURITY ERROR: file $file (installed to $dest_file) contains parent directory reference ..", PEAR_INSTALLER_FAILED);
        }
        // }}}

if (empty($this->_options['register-only']) &&
              (!file_exists($dest_dir) || !is_dir($dest_dir))) {
            if (!$this->mkDirHier($dest_dir)) {
                return $this->raiseError("failed to mkdir $dest_dir",
                                         PEAR_INSTALLER_FAILED);
            }
            $this->log(3, "+ mkdir $dest_dir");
        }

// pretty much nothing happens if we are only registering the install
        if (empty($this->_options['register-only'])) {
            if (empty($atts['replacements'])) {
                if (!file_exists($orig_file)) {
                    return $this->raiseError("file $orig_file does not exist",
                                             PEAR_INSTALLER_FAILED);
                }

if (!@copy($orig_file, $dest_file)) {
                    return $this->raiseError(
                        "failed to write $dest_file: " . error_get_last()["message"],
                        PEAR_INSTALLER_FAILED);
                }

$this->log(3, "+ cp $orig_file $dest_file");
                if (isset($atts['md5sum'])) {
                    $md5sum = md5_file($dest_file);
                }
            } else {
                // {{{ file with replacements
                if (!file_exists($orig_file)) {
                    return $this->raiseError("file does not exist",
                                             PEAR_INSTALLER_FAILED);
                }

$contents = file_get_contents($orig_file);
                if ($contents === false) {
                    $contents = '';
                }

if (isset($atts['md5sum'])) {
                    $md5sum = md5($contents);
                }

$subst_from = $subst_to = array();
                foreach ($atts['replacements'] as $a) {
                    $to = '';
                    if ($a['type'] == 'php-const') {
                        if (preg_match('/^[a-z0-9_]+\\z/i', $a['to'])) {
                            eval("\$to = $a[to];");
                        } else {
                            if (!isset($options['soft'])) {
                                $this->log(0, "invalid php-const replacement: $a[to]");
                            }
                            continue;
                        }
                    } elseif ($a['type'] == 'pear-config') {
                        if ($a['to'] == 'master_server') {
                            $chan = $this->_registry->getChannel($channel);
                            if (!PEAR::isError($chan)) {
                                $to = $chan->getServer();
                            } else {
                                $to = $this->config->get($a['to'], null, $channel);
                            }
                        } else {
                            $to = $this->config->get($a['to'], null, $channel);
                        }
                        if (is_null($to)) {
                            if (!isset($options['soft'])) {
                                $this->log(0, "invalid pear-config replacement: $a[to]");
                            }
                            continue;
                        }
                    } elseif ($a['type'] == 'package-info') {
                        if ($t = $this->pkginfo->packageInfo($a['to'])) {
                            $to = $t;
                        } else {
                            if (!isset($options['soft'])) {
                                $this->log(0, "invalid package-info replacement: $a[to]");
                            }
                            continue;
                        }
                    }
                    if (!is_null($to)) {
                        $subst_from[] = $a['from'];
                        $subst_to[] = $to;
                    }
                }

$this->log(3, "doing ".sizeof($subst_from)." substitution(s) for $final_dest_file");
                if (sizeof($subst_from)) {
                    $contents = str_replace($subst_from, $subst_to, $contents);
                }

$wp = @fopen($dest_file, "wb");
                if (!is_resource($wp)) {
                    return $this->raiseError(
                        "failed to create $dest_file: " . error_get_last()["message"],
                        PEAR_INSTALLER_FAILED);
                }

if (@fwrite($wp, $contents) === false) {
                    return $this->raiseError(
                        "failed writing to $dest_file: " . error_get_last()["message"],
                        PEAR_INSTALLER_FAILED);
                }

fclose($wp);
                // }}}
            }

// {{{ check the md5
            if (isset($md5sum)) {
                if (strtolower($md5sum) === strtolower($atts['md5sum'])) {
                    $this->log(2, "md5sum ok: $final_dest_file");
                } else {
                    if (empty($options['force'])) {
                        // delete the file
                        if (file_exists($dest_file)) {
                            unlink($dest_file);
                        }

if (!isset($options['ignore-errors'])) {
                            return $this->raiseError("bad md5sum for file $final_dest_file",
                                                 PEAR_INSTALLER_FAILED);
                        }

if (!isset($options['soft'])) {
                            $this->log(0, "warning : bad md5sum for file $final_dest_file");
                        }
                    } else {
                        if (!isset($options['soft'])) {
                            $this->log(0, "warning : bad md5sum for file $final_dest_file");
                        }
                    }
                }
            }
            // }}}
            // {{{ set file permissions
            if (!OS_WINDOWS) {
                if ($atts['role'] == 'script') {
                    $mode = 0777 & ~(int)octdec($this->config->get('umask'));
                    $this->log(3, "+ chmod +x $dest_file");
                } else {
                    $mode = 0666 & ~(int)octdec($this->config->get('umask'));
                }

if ($atts['role'] != 'src') {
                    $this->addFileOperation("chmod", array($mode, $dest_file));
                    if (!@chmod($dest_file, $mode)) {
                        if (!isset($options['soft'])) {
                            $this->log(0, "failed to change mode of $dest_file: " .
                                          error_get_last()["message"]);
                        }
                    }
                }
            }
            // }}}

if ($atts['role'] == 'src') {
                rename($dest_file, $final_dest_file);
                $this->log(2, "renamed source file $dest_file to $final_dest_file");
            } else {
                $this->addFileOperation("rename", array($dest_file, $final_dest_file,
                    $atts['role'] == 'ext'));
            }
        }

// Store the full path where the file was installed for easy unistall
        if ($atts['role'] != 'script') {
            $loc = $this->config->get($atts['role'] . '_dir');
        } else {
            $loc = $this->config->get('bin_dir');
        }

if ($atts['role'] != 'src') {
            $this->addFileOperation("installed_as", array($file, $installed_as,
                                    $loc,
                                    dirname(substr($installedas_dest_file, strlen($loc)))));
        }

//$this->log(2, "installed: $dest_file");
        return PEAR_INSTALLER_OK;
    }

// }}}
    // {{{ _installFile2()

/**
     * @param PEAR_PackageFile_v1|PEAR_PackageFile_v2
     * @param string filename
     * @param array attributes from <file> tag in package.xml
     * @param string path to install the file in
     * @param array options from command-line
     * @access private
     */
    function _installFile2(&$pkg, $file, &$real_atts, $tmp_path, $options)
    {
        $atts = $real_atts;
        if (!isset($this->_registry)) {
            $this->_registry = &$this->config->getRegistry();
        }

$channel = $pkg->getChannel();
        // {{{ assemble the destination paths
        if (!in_array($atts['attribs']['role'],
              PEAR_Installer_Role::getValidRoles($pkg->getPackageType()))) {
            return $this->raiseError('Invalid role `' . $atts['attribs']['role'] .
                    "' for file $file");
        }

$role = &PEAR_Installer_Role::factory($pkg, $atts['attribs']['role'], $this->config);
        $err  = $role->setup($this, $pkg, $atts['attribs'], $file);
        if (PEAR::isError($err)) {
            return $err;
        }

if (!$role->isInstallable()) {
            return;
        }

$info = $role->processInstallation($pkg, $atts['attribs'], $file, $tmp_path);
        if (PEAR::isError($info)) {
            return $info;
        }

list($save_destdir, $dest_dir, $dest_file, $orig_file) = $info;
        if (preg_match('~/\.\.(/|\\z)|^\.\./~', str_replace('\\', '/', $dest_file))) {
            return $this->raiseError("SECURITY ERROR: file $file (installed to $dest_file) contains parent directory reference ..", PEAR_INSTALLER_FAILED);
        }

$final_dest_file = $installed_as = $dest_file;
        if (isset($this->_options['packagingroot'])) {
            $final_dest_file = $this->_prependPath($final_dest_file,
                $this->_options['packagingroot']);
        }

$dest_dir  = dirname($final_dest_file);
        $dest_file = $dest_dir . DIRECTORY_SEPARATOR . '.tmp' . basename($final_dest_file);
        // }}}

if (empty($this->_options['register-only'])) {
            if (!file_exists($dest_dir) || !is_dir($dest_dir)) {
                if (!$this->mkDirHier($dest_dir)) {
                    return $this->raiseError("failed to mkdir $dest_dir",
                                             PEAR_INSTALLER_FAILED);
                }
                $this->log(3, "+ mkdir $dest_dir");
            }
        }

$attribs = $atts['attribs'];
        unset($atts['attribs']);
        // pretty much nothing happens if we are only registering the install
        if (empty($this->_options['register-only'])) {
            if (!count($atts)) { // no tasks
                if (!file_exists($orig_file)) {
                    return $this->raiseError("file $orig_file does not exist",
                                             PEAR_INSTALLER_FAILED);
                }

$this->log(3, "+ cp $orig_file $dest_file");
                if (isset($attribs['md5sum'])) {
                    $md5sum = md5_file($dest_file);
                }
            } else { // file with tasks
                if (!file_exists($orig_file)) {
                    return $this->raiseError("file $orig_file does not exist",
                                             PEAR_INSTALLER_FAILED);
                }

$contents = file_get_contents($orig_file);
                if ($contents === false) {
                    $contents = '';
                }

if (isset($attribs['md5sum'])) {
                    $md5sum = md5($contents);
                }

foreach ($atts as $tag => $raw) {
                    $tag = str_replace(array($pkg->getTasksNs() . ':', '-'), array('', '_'), $tag);
                    $task = "PEAR_Task_$tag";
                    $task = new $task($this->config, $this, PEAR_TASK_INSTALL);
                    if (!$task->isScript()) { // scripts are only handled after installation
                        $task->init($raw, $attribs, $pkg->getLastInstalledVersion());
                        $res = $task->startSession($pkg, $contents, $final_dest_file);
                        if ($res === false) {
                            continue; // skip this file
                        }

if (PEAR::isError($res)) {
                            return $res;
                        }

$contents = $res; // save changes
                    }

$wp = @fopen($dest_file, "wb");
                    if (!is_resource($wp)) {
                        return $this->raiseError(
                            "failed to create $dest_file: " . error_get_last()["message"],
                            PEAR_INSTALLER_FAILED);
                    }

if (fwrite($wp, $contents) === false) {
                        return $this->raiseError(
                            "failed writing to $dest_file: " . error_get_last()["message"],
                            PEAR_INSTALLER_FAILED);
                    }

fclose($wp);
                }
            }

// {{{ check the md5
            if (isset($md5sum)) {
                // Make sure the original md5 sum matches with expected
                if (strtolower($md5sum) === strtolower($attribs['md5sum'])) {
                    $this->log(2, "md5sum ok: $final_dest_file");

if (isset($contents)) {
                        // set md5 sum based on $content in case any tasks were run.
                        $real_atts['attribs']['md5sum'] = md5($contents);
                    }
                } else {
                    if (empty($options['force'])) {
                        // delete the file
                        if (file_exists($dest_file)) {
                            unlink($dest_file);
                        }

// }}}
            // {{{ set file permissions
            if (!OS_WINDOWS) {
                if ($role->isExecutable()) {
                    $mode = 0777 & ~(int)octdec($this->config->get('umask'));
                    $this->log(3, "+ chmod +x $dest_file");
                } else {
                    $mode = 0666 & ~(int)octdec($this->config->get('umask'));
                }

if ($attribs['role'] != 'src') {
                    $this->addFileOperation("chmod", array($mode, $dest_file));
                    if (!@chmod($dest_file, $mode)) {
                        if (!isset($options['soft'])) {
                            $this->log(0, "failed to change mode of $dest_file: " .
                                          error_get_last()["message"]);
                        }
                    }
                }
            }
            // }}}

if ($attribs['role'] == 'src') {
                rename($dest_file, $final_dest_file);
                $this->log(2, "renamed source file $dest_file to $final_dest_file");
            } else {
                $this->addFileOperation("rename", array($dest_file, $final_dest_file, $role->isExtension()));
            }
        }

// Store the full path where the file was installed for easy uninstall
        if ($attribs['role'] != 'src') {
            $loc = $this->config->get($role->getLocationConfig(), null, $channel);
            $this->addFileOperation('installed_as', array($file, $installed_as,
                                $loc,
                                dirname(substr($installed_as, strlen($loc)))));
        }

//$this->log(2, "installed: $dest_file");
        return PEAR_INSTALLER_OK;
    }

// }}}
    // {{{ addFileOperation()

/**
     * Add a file operation to the current file transaction.
     *
     * @see startFileTransaction()
     * @param string $type This can be one of:
     *    - rename:  rename a file ($data has 3 values)
     *    - backup:  backup an existing file ($data has 1 value)
     *    - removebackup:  clean up backups created during install ($data has 1 value)
     *    - chmod:   change permissions on a file ($data has 2 values)
     *    - delete:  delete a file ($data has 1 value)
     *    - rmdir:   delete a directory if empty ($data has 1 value)
     *    - installed_as: mark a file as installed ($data has 4 values).
     * @param array $data For all file operations, this array must contain the
     *    full path to the file or directory that is being operated on.  For
     *    the rename command, the first parameter must be the file to rename,
     *    the second its new name, the third whether this is a PHP extension.
     *
     *    The installed_as operation contains 4 elements in this order:
     *    1. Filename as listed in the filelist element from package.xml
     *    2. Full path to the installed file
     *    3. Full path from the php_dir configuration variable used in this
     *       installation
     *    4. Relative path from the php_dir that this file is installed in
     */
    function addFileOperation($type, $data)
    {
        if (!is_array($data)) {
            return $this->raiseError('Internal Error: $data in addFileOperation'
                . ' must be an array, was ' . gettype($data));
        }

if ($type == 'chmod') {
            $octmode = decoct($data[0]);
            $this->log(3, "adding to transaction: $type $octmode $data[1]");
        } else {
            $this->log(3, "adding to transaction: $type " . implode(" ", $data));
        }
        $this->file_operations[] = array($type, $data);
    }

// }}}
    // {{{ startFileTransaction()

function startFileTransaction($rollback_in_case = false)
    {
        if (count($this->file_operations) && $rollback_in_case) {
            $this->rollbackFileTransaction();
        }
        $this->file_operations = array();
    }

// }}}
    // {{{ commitFileTransaction()

function commitFileTransaction()
    {
        // {{{ first, check permissions and such manually
        $errors = array();
        foreach ($this->file_operations as $key => $tr) {
            list($type, $data) = $tr;
            switch ($type) {
                case 'rename':
                    if (!file_exists($data[0])) {
                        $errors[] = "cannot rename file $data[0], doesn't exist";
                    }

// check that dest dir. is writable
                    if (!is_writable(dirname($data[1]))) {
                        $errors[] = "permission denied ($type): $data[1]";
                    }
                    break;
                case 'chmod':
                    // check that file is writable
                    if (!is_writable($data[1])) {
                        $errors[] = "permission denied ($type): $data[1] " . decoct($data[0]);
                    }
                    break;
                case 'delete':
                    if (!file_exists($data[0])) {
                        $this->log(2, "warning: file $data[0] doesn't exist, can't be deleted");
                    }
                    // check that directory is writable
                    if (file_exists($data[0])) {
                        if (!is_writable(dirname($data[0]))) {
                            $errors[] = "permission denied ($type): $data[0]";
                        } else {
                            // make sure the file to be deleted can be opened for writing
                            $fp = false;
                            if (!is_dir($data[0]) &&
                                  (!is_writable($data[0]) || !($fp = @fopen($data[0], 'a')))) {
                                $errors[] = "permission denied ($type): $data[0]";
                            } elseif ($fp) {
                                fclose($fp);
                            }
                        }

/* Verify we are not deleting a file owned by another package
                         * This can happen when a file moves from package A to B in
                         * an upgrade ala http://pear.php.net/17986
                         */
                        $info = array(
                            'package' => strtolower($this->pkginfo->getName()),
                            'channel' => strtolower($this->pkginfo->getChannel()),
                        );
                        $result = $this->_registry->checkFileMap($data[0], $info, '1.1');
                        if (is_array($result)) {
                            $res = array_diff($result, $info);
                            if (!empty($res)) {
                                $new = $this->_registry->getPackage($result[1], $result[0]);
                                $this->file_operations[$key] = false;
                                $pkginfoName = $this->pkginfo->getName();
                                $newChannel  = $new->getChannel();
                                $newPackage  = $new->getName();
                                $this->log(3, "file $data[0] was scheduled for removal from $pkginfoName but is owned by $newChannel/$newPackage, removal has been cancelled.");
                            }
                        }
                    }
                    break;
            }

}
        // }}}

$n = count($this->file_operations);
        $this->log(2, "about to commit $n file operations for " . $this->pkginfo->getName());

$m = count($errors);
        if ($m > 0) {
            foreach ($errors as $error) {
                if (!isset($this->_options['soft'])) {
                    $this->log(1, $error);
                }
            }

if (!isset($this->_options['ignore-errors'])) {
                return false;
            }
        }

$this->_dirtree = array();
        // {{{ really commit the transaction
        foreach ($this->file_operations as $i => $tr) {
            if (!$tr) {
                // support removal of non-existing backups
                continue;
            }

list($type, $data) = $tr;
            switch ($type) {
                case 'backup':
                    if (!file_exists($data[0])) {
                        $this->file_operations[$i] = false;
                        break;
                    }

if (!@copy($data[0], $data[0] . '.bak')) {
                        $this->log(1, 'Could not copy ' . $data[0] . ' to ' . $data[0] .
                            '.bak ' . error_get_last()["message"]);
                        return false;
                    }
                    $this->log(3, "+ backup $data[0] to $data[0].bak");
                    break;
                case 'removebackup':
                    if (file_exists($data[0] . '.bak') && is_writable($data[0] . '.bak')) {
                        unlink($data[0] . '.bak');
                        $this->log(3, "+ rm backup of $data[0] ($data[0].bak)");
                    }
                    break;
                case 'rename':
                    $test = file_exists($data[1]) ? @unlink($data[1]) : null;
                    if (!$test && file_exists($data[1])) {
                        if ($data[2]) {
                            $extra = ', this extension must be installed manually.  Rename to "' .
                                basename($data[1]) . '"';
                        } else {
                            $extra = '';
                        }

if (!isset($this->_options['soft'])) {
                            $this->log(1, 'Could not delete ' . $data[1] . ', cannot rename ' .
                                $data[0] . $extra);
                        }

if (!isset($this->_options['ignore-errors'])) {
                            return false;
                        }
                    }

// permissions issues with rename - copy() is far superior
                    $perms = @fileperms($data[0]);
                    if (!@copy($data[0], $data[1])) {
                        $this->log(1, 'Could not rename ' . $data[0] . ' to ' . $data[1] .
                            ' ' . error_get_last()["message"]);
                        return false;
                    }

// copy over permissions, otherwise they are lost
                    @chmod($data[1], $perms);
                    @unlink($data[0]);
                    $this->log(3, "+ mv $data[0] $data[1]");
                    break;
                case 'chmod':
                    if (!@chmod($data[1], $data[0])) {
                        $this->log(1, 'Could not chmod ' . $data[1] . ' to ' .
                            decoct($data[0]) . ' ' . error_get_last()["message"]);
                        return false;
                    }

$octmode = decoct($data[0]);
                    $this->log(3, "+ chmod $octmode $data[1]");
                    break;
                case 'delete':
                    if (file_exists($data[0])) {
                        if (!@unlink($data[0])) {
                            $this->log(1, 'Could not delete ' . $data[0] . ' ' .
                                error_get_last()["message"]);
                            return false;
                        }
                        $this->log(3, "+ rm $data[0]");
                    }
                    break;
                case 'rmdir':
                    if (file_exists($data[0])) {
                        do {
                            $testme = opendir($data[0]);
                            while (false !== ($entry = readdir($testme))) {
                                if ($entry == '.' || $entry == '..') {
                                    continue;
                                }
                                closedir($testme);
                                break 2; // this directory is not empty and can't be
                                         // deleted
                            }

closedir($testme);
                            if (!@rmdir($data[0])) {
                                $this->log(1, 'Could not rmdir ' . $data[0] . ' ' .
                                    error_get_last()["message"]);
                                return false;
                            }
                            $this->log(3, "+ rmdir $data[0]");
                        } while (false);
                    }
                    break;
                case 'installed_as':
                    $this->pkginfo->setInstalledAs($data[0], $data[1]);
                    if (!isset($this->_dirtree[dirname($data[1])])) {
                        $this->_dirtree[dirname($data[1])] = true;
                        $this->pkginfo->setDirtree(dirname($data[1]));

while(!empty($data[3]) && dirname($data[3]) != $data[3] &&
                                $data[3] != '/' && $data[3] != '\\') {
                            $this->pkginfo->setDirtree($pp =
                                $this->_prependPath($data[3], $data[2]));
                            $this->_dirtree[$pp] = true;
                            $data[3] = dirname($data[3]);
                        }
                    }
                    break;
            }
        }
        // }}}
        $this->log(2, "successfully committed $n file operations");
        $this->file_operations = array();
        return true;
    }

// }}}
    // {{{ rollbackFileTransaction()

// }}}
    // {{{ mkDirHier($dir)

function mkDirHier($dir)
    {
        $this->addFileOperation('mkdir', array($dir));
        return parent::mkDirHier($dir);
    }

// }}}
    // {{{ _parsePackageXml()

$descfile = $p->getPackageFile();
        return $p;
    }

// }}}
    /**
     * Set the list of PEAR_Downloader_Package objects to allow more sane
     * dependency validation
     * @param array
     */
    function setDownloadedPackages(&$pkgs)
    {
        PEAR::pushErrorHandling(PEAR_ERROR_RETURN);
        $err = $this->analyzeDependencies($pkgs);
        PEAR::popErrorHandling();
        if (PEAR::isError($err)) {
            return $err;
        }
        $this->_downloadedPackages = &$pkgs;
    }

/**
     * Set the list of PEAR_Downloader_Package objects to allow more sane
     * dependency validation
     * @param array
     */
    function setUninstallPackages(&$pkgs)
    {
        $this->_downloadedPackages = &$pkgs;
    }

function getInstallPackages()
    {
        return $this->_downloadedPackages;
    }

// {{{ install()

/**
     * Installs the files within the package file specified.
     *
     * @param string|PEAR_Downloader_Package $pkgfile path to the package file,
     *        or a pre-initialized packagefile object
     * @param array $options
     * recognized options:
     * - installroot   : optional prefix directory for installation
     * - force         : force installation
     * - register-only : update registry but don't install files
     * - upgrade       : upgrade existing install
     * - soft          : fail silently
     * - nodeps        : ignore dependency conflicts/missing dependencies
     * - alldeps       : install all dependencies
     * - onlyreqdeps   : install only required dependencies
     *
     * @return array|PEAR_Error package info if successful
     */
    function install($pkgfile, $options = array())
    {
        $this->_options = $options;
        $this->_registry = &$this->config->getRegistry();
        if (is_object($pkgfile)) {
            $dlpkg    = &$pkgfile;
            $pkg      = $pkgfile->getPackageFile();
            $pkgfile  = $pkg->getArchiveFile();
            $descfile = $pkg->getPackageFile();
        } else {
            $descfile = $pkgfile;
            $pkg      = $this->_parsePackageXml($descfile);
            if (PEAR::isError($pkg)) {
                return $pkg;
            }
        }

$tmpdir = dirname($descfile);
        if (realpath($descfile) != realpath($pkgfile)) {
            // Use the temp_dir since $descfile can contain the download dir path
            $tmpdir = $this->config->get('temp_dir', null, 'pear.php.net');
            $tmpdir = System::mktemp('-d -t "' . $tmpdir . '"');

$tar = new Archive_Tar($pkgfile);
            if (!$tar->extract($tmpdir)) {
                return $this->raiseError("unable to unpack $pkgfile");
            }
        }

$pkgname = $pkg->getName();
        $channel = $pkg->getChannel();

if (isset($options['installroot'])) {
            $this->config->setInstallRoot($options['installroot']);
            $this->_registry = &$this->config->getRegistry();
            $installregistry = &$this->_registry;
            $this->installroot = ''; // all done automagically now
            $php_dir = $this->config->get('php_dir', null, $channel);
        } else {
            $this->config->setInstallRoot(false);
            $this->_registry = &$this->config->getRegistry();
            if (isset($this->_options['packagingroot'])) {
                $regdir = $this->_prependPath(
                    $this->config->get('php_dir', null, 'pear.php.net'),
                    $this->_options['packagingroot']);

$metadata_dir = $this->config->get('metadata_dir', null, 'pear.php.net');
                if ($metadata_dir) {
                    $metadata_dir = $this->_prependPath(
                        $metadata_dir,
                        $this->_options['packagingroot']);
                }
                $packrootphp_dir = $this->_prependPath(
                    $this->config->get('php_dir', null, $channel),
                    $this->_options['packagingroot']);

$installregistry = new PEAR_Registry($regdir, false, false, $metadata_dir);
                if (!$installregistry->channelExists($channel, true)) {
                    // we need to fake a channel-discover of this channel
                    $chanobj = $this->_registry->getChannel($channel, true);
                    $installregistry->addChannel($chanobj);
                }
                $php_dir = $packrootphp_dir;
            } else {
                $installregistry = &$this->_registry;
                $php_dir = $this->config->get('php_dir', null, $channel);
            }
            $this->installroot = '';
        }

// {{{ checks to do when not in "force" mode
        if (empty($options['force']) &&
              (file_exists($this->config->get('php_dir')) &&
               is_dir($this->config->get('php_dir')))) {
            $testp = $channel == 'pear.php.net' ? $pkgname : array($channel, $pkgname);
            $instfilelist = $pkg->getInstallationFileList(true);
            if (PEAR::isError($instfilelist)) {
                return $instfilelist;
            }

// ensure we have the most accurate registry
            $installregistry->flushFileMap();
            $test = $installregistry->checkFileMap($instfilelist, $testp, '1.1');
            if (PEAR::isError($test)) {
                return $test;
            }

if (sizeof($test)) {
                $pkgs = $this->getInstallPackages();
                $found = false;
                foreach ($pkgs as $param) {
                    if ($pkg->isSubpackageOf($param)) {
                        $found = true;
                        break;
                    }
                }

if ($found) {
                    // subpackages can conflict with earlier versions of parent packages
                    $parentreg = $installregistry->packageInfo($param->getPackage(), null, $param->getChannel());
                    $tmp = $test;
                    foreach ($tmp as $file => $info) {
                        if (is_array($info)) {
                            if (strtolower($info[1]) == strtolower($param->getPackage()) &&
                                  strtolower($info[0]) == strtolower($param->getChannel())
                            ) {
                                if (isset($parentreg['filelist'][$file])) {
                                    unset($parentreg['filelist'][$file]);
                                } else{
                                    $pos     = strpos($file, '/');
                                    $basedir = substr($file, 0, $pos);
                                    $file2   = substr($file, $pos + 1);
                                    if (isset($parentreg['filelist'][$file2]['baseinstalldir'])
                                        && $parentreg['filelist'][$file2]['baseinstalldir'] === $basedir
                                    ) {
                                        unset($parentreg['filelist'][$file2]);
                                    }
                                }

unset($test[$file]);
                            }
                        } else {
                            if (strtolower($param->getChannel()) != 'pear.php.net') {
                                continue;
                            }

if (strtolower($info) == strtolower($param->getPackage())) {
                                if (isset($parentreg['filelist'][$file])) {
                                    unset($parentreg['filelist'][$file]);
                                } else{
                                    $pos     = strpos($file, '/');
                                    $basedir = substr($file, 0, $pos);
                                    $file2   = substr($file, $pos + 1);
                                    if (isset($parentreg['filelist'][$file2]['baseinstalldir'])
                                        && $parentreg['filelist'][$file2]['baseinstalldir'] === $basedir
                                    ) {
                                        unset($parentreg['filelist'][$file2]);
                                    }
                                }

unset($test[$file]);
                            }
                        }
                    }

$pfk = new PEAR_PackageFile($this->config);
                    $parentpkg = &$pfk->fromArray($parentreg);
                    $installregistry->updatePackage2($parentpkg);
                }

if ($param->getChannel() == 'pecl.php.net' && isset($options['upgrade'])) {
                    $tmp = $test;
                    foreach ($tmp as $file => $info) {
                        if (is_string($info)) {
                            // pear.php.net packages are always stored as strings
                            if (strtolower($info) == strtolower($param->getPackage())) {
                                // upgrading existing package
                                unset($test[$file]);
                            }
                        }
                    }
                }

if (count($test)) {
                    $msg = "$channel/$pkgname: conflicting files found:\n";
                    $longest = max(array_map("strlen", array_keys($test)));
                    $fmt = "%{$longest}s (%s)\n";
                    foreach ($test as $file => $info) {
                        if (!is_array($info)) {
                            $info = array('pear.php.net', $info);
                        }
                        $info = $info[0] . '/' . $info[1];
                        $msg .= sprintf($fmt, $file, $info);
                    }

if (!isset($options['ignore-errors'])) {
                        return $this->raiseError($msg);
                    }

if (!isset($options['soft'])) {
                        $this->log(0, "WARNING: $msg");
                    }
                }
            }
        }
        // }}}

$this->startFileTransaction();

$usechannel = $channel;
        if ($channel == 'pecl.php.net') {
            $test = $installregistry->packageExists($pkgname, $channel);
            if (!$test) {
                $test = $installregistry->packageExists($pkgname, 'pear.php.net');
                $usechannel = 'pear.php.net';
            }
        } else {
            $test = $installregistry->packageExists($pkgname, $channel);
        }

if (empty($options['upgrade']) && empty($options['soft'])) {
            // checks to do only when installing new packages
            if (empty($options['force']) && $test) {
                return $this->raiseError("$channel/$pkgname is already installed");
            }
        } else {
            // Upgrade
            if ($test) {
                $v1 = $installregistry->packageInfo($pkgname, 'version', $usechannel);
                $v2 = $pkg->getVersion();
                $cmp = version_compare("$v1", "$v2", 'gt');
                if (empty($options['force']) && !version_compare("$v2", "$v1", 'gt')) {
                    return $this->raiseError("upgrade to a newer version ($v2 is not newer than $v1)");
                }
            }
        }

// Do cleanups for upgrade and install, remove old release's files first
        if ($test && empty($options['register-only'])) {
            // when upgrading, remove old release's files first:
            if (PEAR::isError($err = $this->_deletePackageFiles($pkgname, $usechannel,
                  true))) {
                if (!isset($options['ignore-errors'])) {
                    return $this->raiseError($err);
                }

if (!isset($options['soft'])) {
                    $this->log(0, 'WARNING: ' . $err->getMessage());
                }
            } else {
                $backedup = $err;
            }
        }

// {{{ Copy files to dest dir ---------------------------------------

// info from the package it self we want to access from _installFile
        $this->pkginfo = &$pkg;
        // used to determine whether we should build any C code
        $this->source_files = 0;

$savechannel = $this->config->get('default_channel');
        if (empty($options['register-only']) && !is_dir($php_dir)) {
            if (PEAR::isError(System::mkdir(array('-p'), $php_dir))) {
                return $this->raiseError("no installation destination directory '$php_dir'\n");
            }
        }

if (substr($pkgfile, -4) != '.xml') {
            $tmpdir .= DIRECTORY_SEPARATOR . $pkgname . '-' . $pkg->getVersion();
        }

$this->configSet('default_channel', $channel);
        // {{{ install files

$ver = $pkg->getPackagexmlVersion();
        if (version_compare($ver, '2.0', '>=')) {
            $filelist = $pkg->getInstallationFilelist();
        } else {
            $filelist = $pkg->getFileList();
        }

if (PEAR::isError($filelist)) {
            return $filelist;
        }

$p = &$installregistry->getPackage($pkgname, $channel);
        $dirtree = (empty($options['register-only']) && $p) ? $p->getDirTree() : false;

$pkg->resetFilelist();
        $pkg->setLastInstalledVersion($installregistry->packageInfo($pkg->getPackage(),
            'version', $pkg->getChannel()));
        foreach ($filelist as $file => $atts) {
            $this->expectError(PEAR_INSTALLER_FAILED);
            if ($pkg->getPackagexmlVersion() == '1.0') {
                $res = $this->_installFile($file, $atts, $tmpdir, $options);
            } else {
                $res = $this->_installFile2($pkg, $file, $atts, $tmpdir, $options);
            }
            $this->popExpect();

if (PEAR::isError($res)) {
                if (empty($options['ignore-errors'])) {
                    $this->rollbackFileTransaction();
                    if ($res->getMessage() == "file does not exist") {
                        $this->raiseError("file $file in package.xml does not exist");
                    }

return $this->raiseError($res);
                }

if (!isset($options['soft'])) {
                    $this->log(0, "Warning: " . $res->getMessage());
                }
            }

$real = isset($atts['attribs']) ? $atts['attribs'] : $atts;
            if ($res == PEAR_INSTALLER_OK && $real['role'] != 'src') {
                // Register files that were installed
                $pkg->installedFile($file, $atts);
            }
        }
        // }}}

// {{{ compile and install source files
        if ($this->source_files > 0 && empty($options['nobuild'])) {
            $configureoptions = empty($options['configureoptions']) ? '' : $options['configureoptions'];
            if (PEAR::isError($err =
                  $this->_compileSourceFiles($savechannel, $pkg, $configureoptions))) {
                return $err;
            }
        }
        // }}}

if (isset($backedup)) {
            $this->_removeBackups($backedup);
        }

if (!$this->commitFileTransaction()) {
            $this->rollbackFileTransaction();
            $this->configSet('default_channel', $savechannel);
            return $this->raiseError("commit failed", PEAR_INSTALLER_FAILED);
        }
        // }}}

$ret          = false;
        $installphase = 'install';
        $oldversion   = false;
        // {{{ Register that the package is installed -----------------------
        if (empty($options['upgrade'])) {
            // if 'force' is used, replace the info in registry
            $usechannel = $channel;
            if ($channel == 'pecl.php.net') {
                $test = $installregistry->packageExists($pkgname, $channel);
                if (!$test) {
                    $test = $installregistry->packageExists($pkgname, 'pear.php.net');
                    $usechannel = 'pear.php.net';
                }
            } else {
                $test = $installregistry->packageExists($pkgname, $channel);
            }

if (!empty($options['force']) && $test) {
                $oldversion = $installregistry->packageInfo($pkgname, 'version', $usechannel);
                $installregistry->deletePackage($pkgname, $usechannel);
            }
            $ret = $installregistry->addPackage2($pkg);
        } else {
            if ($dirtree) {
                $this->startFileTransaction();
                // attempt to delete empty directories
                uksort($dirtree, array($this, '_sortDirs'));
                foreach($dirtree as $dir => $notused) {
                    $this->addFileOperation('rmdir', array($dir));
                }
                $this->commitFileTransaction();
            }

$usechannel = $channel;
            if ($channel == 'pecl.php.net') {
                $test = $installregistry->packageExists($pkgname, $channel);
                if (!$test) {
                    $test = $installregistry->packageExists($pkgname, 'pear.php.net');
                    $usechannel = 'pear.php.net';
                }
            } else {
                $test = $installregistry->packageExists($pkgname, $channel);
            }

// new: upgrade installs a package if it isn't installed
            if (!$test) {
                $ret = $installregistry->addPackage2($pkg);
            } else {
                if ($usechannel != $channel) {
                    $installregistry->deletePackage($pkgname, $usechannel);
                    $ret = $installregistry->addPackage2($pkg);
                } else {
                    $ret = $installregistry->updatePackage2($pkg);
                }
                $installphase = 'upgrade';
            }
        }

if (!$ret) {
            $this->configSet('default_channel', $savechannel);
            return $this->raiseError("Adding package $channel/$pkgname to registry failed");
        }
        // }}}

$this->configSet('default_channel', $savechannel);
        if (class_exists('PEAR_Task_Common')) { // this is auto-included if any tasks exist
            if (PEAR_Task_Common::hasPostinstallTasks()) {
                PEAR_Task_Common::runPostinstallTasks($installphase);
            }
        }

return $pkg->toArray(true);
    }

// }}}

// {{{ _compileSourceFiles()
    /**
     * @param string
     * @param PEAR_PackageFile_v1|PEAR_PackageFile_v2
     * @param mixed[] $configureoptions
     */
    function _compileSourceFiles($savechannel, &$filelist, $configureoptions)
    {
        require_once 'PEAR/Builder.php';
        $this->log(1, "$this->source_files source files, building");
        $bob = new PEAR_Builder($configureoptions, $this->ui);
        $bob->debug = $this->debug;
        $built = $bob->build($filelist, array(&$this, '_buildCallback'));
        if (PEAR::isError($built)) {
            $this->rollbackFileTransaction();
            $this->configSet('default_channel', $savechannel);
            return $built;
        }

$this->log(1, "\nBuild process completed successfully");
        foreach ($built as $ext) {
            $bn = basename($ext['file']);
            list($_ext_name, $_ext_suff) = explode('.', $bn);
            if ($_ext_suff == 'so' || $_ext_suff == 'dll') {
                if (extension_loaded($_ext_name)) {
                    return $this->raiseError("Extension '$_ext_name' already loaded. " .
                                             'Please unload it in your php.ini file ' .
                                             'prior to install or upgrade');
                }
                $role = 'ext';
            } else {
                $role = 'src';
            }

$dest = $ext['dest'];
            $packagingroot = '';
            if (isset($this->_options['packagingroot'])) {
                $packagingroot = $this->_options['packagingroot'];
            }

$copyto = $this->_prependPath($dest, $packagingroot);
            $extra  = $copyto != $dest ? " as '$copyto'" : '';
            $this->log(1, "Installing '$dest'$extra");

$copydir = dirname($copyto);
            // pretty much nothing happens if we are only registering the install
            if (empty($this->_options['register-only'])) {
                if (!file_exists($copydir) || !is_dir($copydir)) {
                    if (!$this->mkDirHier($copydir)) {
                        return $this->raiseError("failed to mkdir $copydir",
                            PEAR_INSTALLER_FAILED);
                    }

$this->log(3, "+ mkdir $copydir");
                }

if (!@copy($ext['file'], $copyto)) {
                    return $this->raiseError(
                        "failed to write $copyto (" . error_get_last()["message"] . ")",
                        PEAR_INSTALLER_FAILED);
                }

$this->log(3, "+ cp $ext[file] $copyto");
                $this->addFileOperation('rename', array($ext['file'], $copyto));
                if (!OS_WINDOWS) {
                    $mode = 0666 & ~(int)octdec($this->config->get('umask'));
                    $this->addFileOperation('chmod', array($mode, $copyto));
                    if (!@chmod($copyto, $mode)) {
                        $this->log(0, "failed to change mode of $copyto (" .
                                      error_get_last()["message"] . ")");
                    }
                }
            }

$data = array(
                'role'         => $role,
                'name'         => $bn,
                'installed_as' => $dest,
                'php_api'      => $ext['php_api'],
                'zend_mod_api' => $ext['zend_mod_api'],
                'zend_ext_api' => $ext['zend_ext_api'],
            );

if ($filelist->getPackageXmlVersion() == '1.0') {
                $filelist->installedFile($bn, $data);
            } else {
                $filelist->installedFile($bn, array('attribs' => $data));
            }
        }
    }

// }}}
    function &getUninstallPackages()
    {
        return $this->_downloadedPackages;
    }
    // {{{ uninstall()

/**
     * Uninstall a package
     *
     * This method removes all files installed by the application, and then
     * removes any empty directories.
     * @param string package name
     * @param array Command-line options.  Possibilities include:
     *
     *              - installroot: base installation dir, if not the default
     *              - register-only : update registry but don't remove files
     *              - nodeps: do not process dependencies of other packages to ensure
     *                        uninstallation does not break things
     */
    function uninstall($package, $options = array())
    {
        $installRoot = isset($options['installroot']) ? $options['installroot'] : '';
        $this->config->setInstallRoot($installRoot);

$this->installroot = '';
        $this->_registry = &$this->config->getRegistry();
        if (is_object($package)) {
            $channel = $package->getChannel();
            $pkg     = $package;
            $package = $pkg->getPackage();
        } else {
            $pkg = false;
            $info = $this->_registry->parsePackageName($package,
                $this->config->get('default_channel'));
            $channel = $info['channel'];
            $package = $info['package'];
        }

$savechannel = $this->config->get('default_channel');
        $this->configSet('default_channel', $channel);
        if (!is_object($pkg)) {
            $pkg = $this->_registry->getPackage($package, $channel);
        }

if (!$pkg) {
            $this->configSet('default_channel', $savechannel);
            return $this->raiseError($this->_registry->parsedPackageNameToString(
                array(
                    'channel' => $channel,
                    'package' => $package
                ), true) . ' not installed');
        }

if ($pkg->getInstalledBinary()) {
            // this is just an alias for a binary package
            return $this->_registry->deletePackage($package, $channel);
        }

$filelist = $pkg->getFilelist();
        PEAR::staticPushErrorHandling(PEAR_ERROR_RETURN);
        if (!class_exists('PEAR_Dependency2')) {
            require_once 'PEAR/Dependency2.php';
        }

$depchecker = new PEAR_Dependency2($this->config, $options,
            array('channel' => $channel, 'package' => $package),
            PEAR_VALIDATE_UNINSTALLING);
        $e = $depchecker->validatePackageUninstall($this);
        PEAR::staticPopErrorHandling();
        if (PEAR::isError($e)) {
            if (!isset($options['ignore-errors'])) {
                return $this->raiseError($e);
            }

if (!isset($options['soft'])) {
                $this->log(0, 'WARNING: ' . $e->getMessage());
            }
        } elseif (is_array($e)) {
            if (!isset($options['soft'])) {
                $this->log(0, $e[0]);
            }
        }

$this->pkginfo = &$pkg;
        // pretty much nothing happens if we are only registering the uninstall
        if (empty($options['register-only'])) {
            // {{{ Delete the files
            $this->startFileTransaction();
            PEAR::pushErrorHandling(PEAR_ERROR_RETURN);
            if (PEAR::isError($err = $this->_deletePackageFiles($package, $channel))) {
                PEAR::popErrorHandling();
                $this->rollbackFileTransaction();
                $this->configSet('default_channel', $savechannel);
                if (!isset($options['ignore-errors'])) {
                    return $this->raiseError($err);
                }

if (!isset($options['soft'])) {
                    $this->log(0, 'WARNING: ' . $err->getMessage());
                }
            } else {
                PEAR::popErrorHandling();
            }

if (!$this->commitFileTransaction()) {
                $this->rollbackFileTransaction();
                if (!isset($options['ignore-errors'])) {
                    return $this->raiseError("uninstall failed");
                }

if (!isset($options['soft'])) {
                    $this->log(0, 'WARNING: uninstall failed');
                }
            } else {
                $this->startFileTransaction();
                $dirtree = $pkg->getDirTree();
                if ($dirtree === false) {
                    $this->configSet('default_channel', $savechannel);
                    return $this->_registry->deletePackage($package, $channel);
                }

// attempt to delete empty directories
                uksort($dirtree, array($this, '_sortDirs'));
                foreach($dirtree as $dir => $notused) {
                    $this->addFileOperation('rmdir', array($dir));
                }

if (!$this->commitFileTransaction()) {
                    $this->rollbackFileTransaction();
                    if (!isset($options['ignore-errors'])) {
                        return $this->raiseError("uninstall failed");
                    }

if (!isset($options['soft'])) {
                        $this->log(0, 'WARNING: uninstall failed');
                    }
                }
            }
            // }}}
        }

$this->configSet('default_channel', $savechannel);
        // Register that the package is no longer installed
        return $this->_registry->deletePackage($package, $channel);
    }

/**
     * Sort a list of arrays of array(downloaded packagefilename) by dependency.
     *
     * It also removes duplicate dependencies
     * @param array an array of PEAR_PackageFile_v[1/2] objects
     * @return array|PEAR_Error array of array(packagefilename, package.xml contents)
     */
    function sortPackagesForUninstall(&$packages)
    {
        $this->_dependencyDB = &PEAR_DependencyDB::singleton($this->config);
        if (PEAR::isError($this->_dependencyDB)) {
            return $this->_dependencyDB;
        }
        usort($packages, array(&$this, '_sortUninstall'));
    }

// }}}
    // {{{ _sortDirs()
    function _sortDirs($a, $b)
    {
        if (strnatcmp($a, $b) == -1) return 1;
        if (strnatcmp($a, $b) == 1) return -1;
        return 0;
    }

// }}}

// {{{ _buildCallback()

function _buildCallback($what, $data)
    {
        if (($what == 'cmdoutput' && $this->debug > 1) ||
            ($what == 'output' && $this->debug > 0)) {
            $this->ui->outputData(rtrim($data), 'build');
        }
    }

// }}}
}

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