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Edit File : Registry.php \| Size : 74.18 KB
<?php /** * PEAR_Registry * * PHP versions 4 and 5 * * @category pear * @package PEAR * @author Stig Bakken <ssb@php.net> * @author Tomas V. V. Cox <cox@idecnet.com> * @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 / /* * for PEAR_Error / require_once 'PEAR.php'; require_once 'PEAR/DependencyDB.php'; define('PEAR_REGISTRY_ERROR_LOCK', -2); define('PEAR_REGISTRY_ERROR_FORMAT', -3); define('PEAR_REGISTRY_ERROR_FILE', -4); define('PEAR_REGISTRY_ERROR_CONFLICT', -5); define('PEAR_REGISTRY_ERROR_CHANNEL_FILE', -6); /* * Administration class used to maintain the installed package database. * @category pear * @package PEAR * @author Stig Bakken <ssb@php.net> * @author Tomas V. V. Cox <cox@idecnet.com> * @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 1.4.0a1 / class PEAR_Registry extends PEAR { /* * File containing all channel information. * @var string / var $channels = ''; /* Directory where registry files are stored. * @var string / var $statedir = ''; /* File where the file map is stored * @var string / var $filemap = ''; /* Directory where registry files for channels are stored. * @var string / var $channelsdir = ''; /* Name of file used for locking the registry * @var string / var $lockfile = ''; /* File descriptor used during locking * @var resource / var $lock_fp = null; /* Mode used during locking * @var int / var $lock_mode = 0; // XXX UNUSED /* Cache of package information. Structure: * array( * 'package' => array('id' => ... ), * ... ) * @var array / var $pkginfo_cache = array(); /* Cache of file map. Structure: * array( '/path/to/file' => 'package', ... ) * @var array / var $filemap_cache = array(); /* * @var false\|PEAR_ChannelFile / var $_pearChannel; /* * @var false\|PEAR_ChannelFile / var $_peclChannel; /* * @var false\|PEAR_ChannelFile / var $_docChannel; /* * @var PEAR_DependencyDB / var $_dependencyDB; /* * @var PEAR_Config / var $_config; /* * PEAR_Registry constructor. * * @param string (optional) PEAR install directory (for .php files) * @param PEAR_ChannelFile PEAR_ChannelFile object representing the PEAR channel, if * default values are not desired. Only used the very first time a PEAR * repository is initialized * @param PEAR_ChannelFile PEAR_ChannelFile object representing the PECL channel, if * default values are not desired. Only used the very first time a PEAR * repository is initialized * * @access public / function __construct($pear_install_dir = PEAR_INSTALL_DIR, $pear_channel = false, $pecl_channel = false, $pear_metadata_dir = '') { parent::__construct(); $this->setInstallDir($pear_install_dir, $pear_metadata_dir); $this->_pearChannel = $pear_channel; $this->_peclChannel = $pecl_channel; $this->_config = false; } function setInstallDir($pear_install_dir = PEAR_INSTALL_DIR, $pear_metadata_dir = '') { $ds = DIRECTORY_SEPARATOR; $this->install_dir = $pear_install_dir; if (!$pear_metadata_dir) { $pear_metadata_dir = $pear_install_dir; } $this->channelsdir = $pear_metadata_dir.$ds.'.channels'; $this->statedir = $pear_metadata_dir.$ds.'.registry'; $this->filemap = $pear_metadata_dir.$ds.'.filemap'; $this->lockfile = $pear_metadata_dir.$ds.'.lock'; } function hasWriteAccess() { if (!file_exists($this->install_dir)) { $dir = $this->install_dir; while ($dir && $dir != '.') { $olddir = $dir; $dir = dirname($dir); if ($dir != '.' && file_exists($dir)) { if (is_writeable($dir)) { return true; } return false; } if ($dir == $olddir) { // this can happen in safe mode return @is_writable($dir); } } return false; } return is_writeable($this->install_dir); } function setConfig(&$config, $resetInstallDir = true) { $this->_config = &$config; if ($resetInstallDir) { $this->setInstallDir($config->get('php_dir'), $config->get('metadata_dir')); } } function _initializeChannelDirs() { static $running = false; if (!$running) { $running = true; $ds = DIRECTORY_SEPARATOR; if (!is_dir($this->channelsdir) \|\| !file_exists($this->channelsdir . $ds . 'pear.php.net.reg') \|\| !file_exists($this->channelsdir . $ds . 'pecl.php.net.reg') \|\| !file_exists($this->channelsdir . $ds . 'doc.php.net.reg') \|\| !file_exists($this->channelsdir . $ds . '__uri.reg')) { if (!file_exists($this->channelsdir . $ds . 'pear.php.net.reg')) { $pear_channel = $this->_pearChannel; if (!is_a($pear_channel, 'PEAR_ChannelFile') \|\| !$pear_channel->validate()) { if (!class_exists('PEAR_ChannelFile')) { require_once 'PEAR/ChannelFile.php'; } $pear_channel = new PEAR_ChannelFile; $pear_channel->setAlias('pear'); $pear_channel->setServer('pear.php.net'); $pear_channel->setSummary('PHP Extension and Application Repository'); $pear_channel->setDefaultPEARProtocols(); $pear_channel->setBaseURL('REST1.0', 'http://pear.php.net/rest/'); $pear_channel->setBaseURL('REST1.1', 'http://pear.php.net/rest/'); $pear_channel->setBaseURL('REST1.3', 'http://pear.php.net/rest/'); //$pear_channel->setBaseURL('REST1.4', 'http://pear.php.net/rest/'); } else { $pear_channel->setServer('pear.php.net'); $pear_channel->setAlias('pear'); } $pear_channel->validate(); $this->_addChannel($pear_channel); } if (!file_exists($this->channelsdir . $ds . 'pecl.php.net.reg')) { $pecl_channel = $this->_peclChannel; if (!is_a($pecl_channel, 'PEAR_ChannelFile') \|\| !$pecl_channel->validate()) { if (!class_exists('PEAR_ChannelFile')) { require_once 'PEAR/ChannelFile.php'; } $pecl_channel = new PEAR_ChannelFile; $pecl_channel->setAlias('pecl'); $pecl_channel->setServer('pecl.php.net'); $pecl_channel->setSummary('PHP Extension Community Library'); $pecl_channel->setDefaultPEARProtocols(); $pecl_channel->setBaseURL('REST1.0', 'http://pecl.php.net/rest/'); $pecl_channel->setBaseURL('REST1.1', 'http://pecl.php.net/rest/'); $pecl_channel->setValidationPackage('PEAR_Validator_PECL', '1.0'); } else { $pecl_channel->setServer('pecl.php.net'); $pecl_channel->setAlias('pecl'); } $pecl_channel->validate(); $this->_addChannel($pecl_channel); } if (!file_exists($this->channelsdir . $ds . 'doc.php.net.reg')) { $doc_channel = $this->_docChannel; if (!is_a($doc_channel, 'PEAR_ChannelFile') \|\| !$doc_channel->validate()) { if (!class_exists('PEAR_ChannelFile')) { require_once 'PEAR/ChannelFile.php'; } $doc_channel = new PEAR_ChannelFile; $doc_channel->setAlias('phpdocs'); $doc_channel->setServer('doc.php.net'); $doc_channel->setSummary('PHP Documentation Team'); $doc_channel->setDefaultPEARProtocols(); $doc_channel->setBaseURL('REST1.0', 'http://doc.php.net/rest/'); $doc_channel->setBaseURL('REST1.1', 'http://doc.php.net/rest/'); $doc_channel->setBaseURL('REST1.3', 'http://doc.php.net/rest/'); } else { $doc_channel->setServer('doc.php.net'); $doc_channel->setAlias('doc'); } $doc_channel->validate(); $this->_addChannel($doc_channel); } if (!file_exists($this->channelsdir . $ds . '__uri.reg')) { if (!class_exists('PEAR_ChannelFile')) { require_once 'PEAR/ChannelFile.php'; } $private = new PEAR_ChannelFile; $private->setName('__uri'); $private->setDefaultPEARProtocols(); $private->setBaseURL('REST1.0', '**'); $private->setSummary('Pseudo-channel for static packages'); $this->_addChannel($private); } $this->_rebuildFileMap(); } $running = false; } } function _initializeDirs() { $ds = DIRECTORY_SEPARATOR; // XXX Compatibility code should be removed in the future // rename all registry files if any to lowercase if (!OS_WINDOWS && file_exists($this->statedir) && is_dir($this->statedir) && $handle = opendir($this->statedir)) { $dest = $this->statedir . $ds; while (false !== ($file = readdir($handle))) { if (preg_match('/^.[A-Z].\.reg\\z/', $file)) { rename($dest . $file, $dest . strtolower($file)); } } closedir($handle); } $this->_initializeChannelDirs(); if (!file_exists($this->filemap)) { $this->_rebuildFileMap(); } $this->_initializeDepDB(); } function _initializeDepDB() { if (!isset($this->_dependencyDB)) { static $initializing = false; if (!$initializing) { $initializing = true; if (!$this->_config) { // never used? $file = OS_WINDOWS ? 'pear.ini' : '.pearrc'; $this->_config = new PEAR_Config($this->statedir . DIRECTORY_SEPARATOR . $file); $this->_config->setRegistry($this); $this->_config->set('php_dir', $this->install_dir); } $this->_dependencyDB = &PEAR_DependencyDB::singleton($this->_config); if (PEAR::isError($this->_dependencyDB)) { // attempt to recover by removing the dep db if (file_exists($this->_config->get('metadata_dir', null, 'pear.php.net') . DIRECTORY_SEPARATOR . '.depdb')) { @unlink($this->_config->get('metadata_dir', null, 'pear.php.net') . DIRECTORY_SEPARATOR . '.depdb'); } $this->_dependencyDB = &PEAR_DependencyDB::singleton($this->_config); if (PEAR::isError($this->_dependencyDB)) { echo $this->_dependencyDB->getMessage(); echo 'Unrecoverable error'; exit(1); } } $initializing = false; } } } /* * PEAR_Registry destructor. Makes sure no locks are forgotten. * * @access private / function _PEAR_Registry() { parent::_PEAR(); if (is_resource($this->lock_fp)) { $this->_unlock(); } } /* * Make sure the directory where we keep registry files exists. * * @return bool TRUE if directory exists, FALSE if it could not be * created * * @access private / function _assertStateDir($channel = false) { if ($channel && $this->_getChannelFromAlias($channel) != 'pear.php.net') { return $this->_assertChannelStateDir($channel); } static $init = false; if (!file_exists($this->statedir)) { if (!$this->hasWriteAccess()) { return false; } require_once 'System.php'; if (!System::mkdir(array('-p', $this->statedir))) { return $this->raiseError("could not create directory '{$this->statedir}'"); } $init = true; } elseif (!is_dir($this->statedir)) { return $this->raiseError('Cannot create directory ' . $this->statedir . ', ' . 'it already exists and is not a directory'); } $ds = DIRECTORY_SEPARATOR; if (!file_exists($this->channelsdir)) { if (!file_exists($this->channelsdir . $ds . 'pear.php.net.reg') \|\| !file_exists($this->channelsdir . $ds . 'pecl.php.net.reg') \|\| !file_exists($this->channelsdir . $ds . 'doc.php.net.reg') \|\| !file_exists($this->channelsdir . $ds . '__uri.reg')) { $init = true; } } elseif (!is_dir($this->channelsdir)) { return $this->raiseError('Cannot create directory ' . $this->channelsdir . ', ' . 'it already exists and is not a directory'); } if ($init) { static $running = false; if (!$running) { $running = true; $this->_initializeDirs(); $running = false; $init = false; } } else { $this->_initializeDepDB(); } return true; } /* * Make sure the directory where we keep registry files exists for a non-standard channel. * * @param string channel name * @return bool TRUE if directory exists, FALSE if it could not be * created * * @access private / function _assertChannelStateDir($channel) { $ds = DIRECTORY_SEPARATOR; if (!$channel \|\| $this->_getChannelFromAlias($channel) == 'pear.php.net') { if (!file_exists($this->channelsdir . $ds . 'pear.php.net.reg')) { $this->_initializeChannelDirs(); } return $this->_assertStateDir($channel); } $channelDir = $this->_channelDirectoryName($channel); if (!is_dir($this->channelsdir) \|\| !file_exists($this->channelsdir . $ds . 'pear.php.net.reg')) { $this->_initializeChannelDirs(); } if (!file_exists($channelDir)) { if (!$this->hasWriteAccess()) { return false; } require_once 'System.php'; if (!System::mkdir(array('-p', $channelDir))) { return $this->raiseError("could not create directory '" . $channelDir . "'"); } } elseif (!is_dir($channelDir)) { return $this->raiseError("could not create directory '" . $channelDir . "', already exists and is not a directory"); } return true; } /* * Make sure the directory where we keep registry files for channels exists * * @return bool TRUE if directory exists, FALSE if it could not be * created * * @access private / function _assertChannelDir() { if (!file_exists($this->channelsdir)) { if (!$this->hasWriteAccess()) { return false; } require_once 'System.php'; if (!System::mkdir(array('-p', $this->channelsdir))) { return $this->raiseError("could not create directory '{$this->channelsdir}'"); } } elseif (!is_dir($this->channelsdir)) { return $this->raiseError("could not create directory '{$this->channelsdir}" . "', it already exists and is not a directory"); } if (!file_exists($this->channelsdir . DIRECTORY_SEPARATOR . '.alias')) { if (!$this->hasWriteAccess()) { return false; } require_once 'System.php'; if (!System::mkdir(array('-p', $this->channelsdir . DIRECTORY_SEPARATOR . '.alias'))) { return $this->raiseError("could not create directory '{$this->channelsdir}/.alias'"); } } elseif (!is_dir($this->channelsdir . DIRECTORY_SEPARATOR . '.alias')) { return $this->raiseError("could not create directory '{$this->channelsdir}" . "/.alias', it already exists and is not a directory"); } return true; } /* * Get the name of the file where data for a given package is stored. * * @param string channel name, or false if this is a PEAR package * @param string package name * * @return string registry file name * * @access public / function _packageFileName($package, $channel = false) { if ($channel && $this->_getChannelFromAlias($channel) != 'pear.php.net') { return $this->_channelDirectoryName($channel) . DIRECTORY_SEPARATOR . strtolower($package) . '.reg'; } return $this->statedir . DIRECTORY_SEPARATOR . strtolower($package) . '.reg'; } /* * Get the name of the file where data for a given channel is stored. * @param string channel name * @return string registry file name / function _channelFileName($channel, $noaliases = false) { if (!$noaliases) { if (file_exists($this->_getChannelAliasFileName($channel))) { $channel = implode('', file($this->_getChannelAliasFileName($channel))); } } return $this->channelsdir . DIRECTORY_SEPARATOR . str_replace('/', '_', strtolower($channel)) . '.reg'; } /* * @param string * @return string / function _getChannelAliasFileName($alias) { return $this->channelsdir . DIRECTORY_SEPARATOR . '.alias' . DIRECTORY_SEPARATOR . str_replace('/', '_', strtolower($alias)) . '.txt'; } /* * Get the name of a channel from its alias / function _getChannelFromAlias($channel) { if (!$this->_channelExists($channel)) { if ($channel == 'pear.php.net') { return 'pear.php.net'; } if ($channel == 'pecl.php.net') { return 'pecl.php.net'; } if ($channel == 'doc.php.net') { return 'doc.php.net'; } if ($channel == '__uri') { return '__uri'; } return false; } $channel = strtolower($channel); if (file_exists($this->_getChannelAliasFileName($channel))) { // translate an alias to an actual channel return implode('', file($this->_getChannelAliasFileName($channel))); } return $channel; } /* * Get the alias of a channel from its alias or its name / function _getAlias($channel) { if (!$this->_channelExists($channel)) { if ($channel == 'pear.php.net') { return 'pear'; } if ($channel == 'pecl.php.net') { return 'pecl'; } if ($channel == 'doc.php.net') { return 'phpdocs'; } return false; } $channel = $this->_getChannel($channel); if (PEAR::isError($channel)) { return $channel; } return $channel->getAlias(); } /* * Get the name of the file where data for a given package is stored. * * @param string channel name, or false if this is a PEAR package * @param string package name * * @return string registry file name * * @access public / function _channelDirectoryName($channel) { if (!$channel \|\| $this->_getChannelFromAlias($channel) == 'pear.php.net') { return $this->statedir; } $ch = $this->_getChannelFromAlias($channel); if (!$ch) { $ch = $channel; } return $this->statedir . DIRECTORY_SEPARATOR . strtolower('.channel.' . str_replace('/', '_', $ch)); } function _openPackageFile($package, $mode, $channel = false) { if (!$this->_assertStateDir($channel)) { return null; } if (!in_array($mode, array('r', 'rb')) && !$this->hasWriteAccess()) { return null; } $file = $this->_packageFileName($package, $channel); if (!file_exists($file) && $mode == 'r' \|\| $mode == 'rb') { return null; } $fp = @fopen($file, $mode); if (!$fp) { return null; } return $fp; } function _closePackageFile($fp) { fclose($fp); } function _openChannelFile($channel, $mode) { if (!$this->_assertChannelDir()) { return null; } if (!in_array($mode, array('r', 'rb')) && !$this->hasWriteAccess()) { return null; } $file = $this->_channelFileName($channel); if (!file_exists($file) && $mode == 'r' \|\| $mode == 'rb') { return null; } $fp = @fopen($file, $mode); if (!$fp) { return null; } return $fp; } function _closeChannelFile($fp) { fclose($fp); } function _rebuildFileMap() { if (!class_exists('PEAR_Installer_Role')) { require_once 'PEAR/Installer/Role.php'; } $channels = $this->_listAllPackages(); $files = array(); foreach ($channels as $channel => $packages) { foreach ($packages as $package) { $version = $this->_packageInfo($package, 'version', $channel); $filelist = $this->_packageInfo($package, 'filelist', $channel); if (!is_array($filelist)) { continue; } foreach ($filelist as $name => $attrs) { if (isset($attrs['attribs'])) { $attrs = $attrs['attribs']; } // it is possible for conflicting packages in different channels to // conflict with data files/doc files if ($name == 'dirtree') { continue; } if (isset($attrs['role']) && !in_array($attrs['role'], PEAR_Installer_Role::getInstallableRoles())) { // these are not installed continue; } if (isset($attrs['role']) && !in_array($attrs['role'], PEAR_Installer_Role::getBaseinstallRoles())) { $attrs['baseinstalldir'] = $package; } if (isset($attrs['baseinstalldir'])) { $file = $attrs['baseinstalldir'].DIRECTORY_SEPARATOR.$name; } else { $file = $name; } $file = preg_replace(',^/+,', '', $file); if ($channel != 'pear.php.net') { if (!isset($files[$attrs['role']])) { $files[$attrs['role']] = array(); } $files[$attrs['role']][$file] = array(strtolower($channel), strtolower($package)); } else { if (!isset($files[$attrs['role']])) { $files[$attrs['role']] = array(); } $files[$attrs['role']][$file] = strtolower($package); } } } } $this->_assertStateDir(); if (!$this->hasWriteAccess()) { return false; } $fp = @fopen($this->filemap, 'wb'); if (!$fp) { return false; } $this->filemap_cache = $files; fwrite($fp, serialize($files)); fclose($fp); return true; } function _readFileMap() { if (!file_exists($this->filemap)) { return array(); } $fp = @fopen($this->filemap, 'r'); if (!$fp) { $last_errormsg = ''; $last_error = error_get_last(); if (!empty($last_error['message'])) { $last_errormsg = $last_error['message']; } return $this->raiseError('PEAR_Registry: could not open filemap "' . $this->filemap . '"', PEAR_REGISTRY_ERROR_FILE, null, null, $last_errormsg); } clearstatcache(); $fsize = filesize($this->filemap); fclose($fp); $data = file_get_contents($this->filemap); $tmp = unserialize($data); if (!$tmp && $fsize > 7) { return $this->raiseError('PEAR_Registry: invalid filemap data', PEAR_REGISTRY_ERROR_FORMAT, null, null, $data); } $this->filemap_cache = $tmp; return true; } /* * Lock the registry. * * @param integer lock mode, one of LOCK_EX, LOCK_SH or LOCK_UN. * See flock manual for more information. * * @return bool TRUE on success, FALSE if locking failed, or a * PEAR error if some other error occurs (such as the * lock file not being writable). * * @access private / function _lock($mode = LOCK_EX) { if (stristr(php_uname(), 'Windows 9')) { return true; } if ($mode != LOCK_UN && is_resource($this->lock_fp)) { // XXX does not check type of lock (LOCK_SH/LOCK_EX) return true; } if (!$this->_assertStateDir()) { if ($mode == LOCK_EX) { return $this->raiseError('Registry directory is not writeable by the current user'); } return true; } $open_mode = 'w'; // XXX People reported problems with LOCK_SH and 'w' if ($mode === LOCK_SH \|\| $mode === LOCK_UN) { if (!file_exists($this->lockfile)) { touch($this->lockfile); } $open_mode = 'r'; } if (!is_resource($this->lock_fp)) { $this->lock_fp = @fopen($this->lockfile, $open_mode); } if (!is_resource($this->lock_fp)) { $this->lock_fp = null; return $this->raiseError("could not create lock file" . (isset($php_errormsg) ? ": " . $php_errormsg : "")); } if (!(int)flock($this->lock_fp, $mode)) { switch ($mode) { case LOCK_SH: $str = 'shared'; break; case LOCK_EX: $str = 'exclusive'; break; case LOCK_UN: $str = 'unlock'; break; default: $str = 'unknown'; break; } //is resource at this point, close it on error. fclose($this->lock_fp); $this->lock_fp = null; return $this->raiseError("could not acquire $str lock ($this->lockfile)", PEAR_REGISTRY_ERROR_LOCK); } return true; } function _unlock() { $ret = $this->_lock(LOCK_UN); if (is_resource($this->lock_fp)) { fclose($this->lock_fp); } $this->lock_fp = null; return $ret; } function _packageExists($package, $channel = false) { return file_exists($this->_packageFileName($package, $channel)); } /* * Determine whether a channel exists in the registry * * @param string Channel name * @param bool if true, then aliases will be ignored * @return boolean / function _channelExists($channel, $noaliases = false) { $a = file_exists($this->_channelFileName($channel, $noaliases)); if (!$a && $channel == 'pear.php.net') { return true; } if (!$a && $channel == 'pecl.php.net') { return true; } if (!$a && $channel == 'doc.php.net') { return true; } return $a; } /* * Determine whether a mirror exists within the default channel in the registry * * @param string Channel name * @param string Mirror name * * @return boolean / function _mirrorExists($channel, $mirror) { $data = $this->_channelInfo($channel); if (!isset($data['servers']['mirror'])) { return false; } foreach ($data['servers']['mirror'] as $m) { if ($m['attribs']['host'] == $mirror) { return true; } } return false; } /* * @param PEAR_ChannelFile Channel object * @param donotuse * @param string Last-Modified HTTP tag from remote request * @return boolean\|PEAR_Error True on creation, false if it already exists / function _addChannel($channel, $update = false, $lastmodified = false) { if (!is_a($channel, 'PEAR_ChannelFile')) { return false; } if (!$channel->validate()) { return false; } if (file_exists($this->_channelFileName($channel->getName()))) { if (!$update) { return false; } $checker = $this->_getChannel($channel->getName()); if (PEAR::isError($checker)) { return $checker; } if ($channel->getAlias() != $checker->getAlias()) { if (file_exists($this->_getChannelAliasFileName($checker->getAlias()))) { @unlink($this->_getChannelAliasFileName($checker->getAlias())); } } } else { if ($update && !in_array($channel->getName(), array('pear.php.net', 'pecl.php.net', 'doc.php.net'))) { return false; } } $ret = $this->_assertChannelDir(); if (PEAR::isError($ret)) { return $ret; } $ret = $this->_assertChannelStateDir($channel->getName()); if (PEAR::isError($ret)) { return $ret; } if ($channel->getAlias() != $channel->getName()) { if (file_exists($this->_getChannelAliasFileName($channel->getAlias())) && $this->_getChannelFromAlias($channel->getAlias()) != $channel->getName()) { $channel->setAlias($channel->getName()); } if (!$this->hasWriteAccess()) { return false; } $fp = @fopen($this->_getChannelAliasFileName($channel->getAlias()), 'w'); if (!$fp) { return false; } fwrite($fp, $channel->getName()); fclose($fp); } if (!$this->hasWriteAccess()) { return false; } $fp = @fopen($this->_channelFileName($channel->getName()), 'wb'); if (!$fp) { return false; } $info = $channel->toArray(); if ($lastmodified) { $info['_lastmodified'] = $lastmodified; } else { $info['_lastmodified'] = self::getSourceDateEpoch(); } fwrite($fp, serialize($info)); fclose($fp); return true; } /* * Deletion fails if there are any packages installed from the channel * @param string\|PEAR_ChannelFile channel name * @return boolean\|PEAR_Error True on deletion, false if it doesn't exist / function _deleteChannel($channel) { if (!is_string($channel)) { if (!is_a($channel, 'PEAR_ChannelFile')) { return false; } if (!$channel->validate()) { return false; } $channel = $channel->getName(); } if ($this->_getChannelFromAlias($channel) == '__uri') { return false; } if ($this->_getChannelFromAlias($channel) == 'pecl.php.net') { return false; } if ($this->_getChannelFromAlias($channel) == 'doc.php.net') { return false; } if (!$this->_channelExists($channel)) { return false; } if (!$channel \|\| $this->_getChannelFromAlias($channel) == 'pear.php.net') { return false; } $channel = $this->_getChannelFromAlias($channel); if ($channel == 'pear.php.net') { return false; } $test = $this->_listChannelPackages($channel); if (count($test)) { return false; } $test = @rmdir($this->_channelDirectoryName($channel)); if (!$test) { return false; } $file = $this->_getChannelAliasFileName($this->_getAlias($channel)); if (file_exists($file)) { $test = @unlink($file); if (!$test) { return false; } } $file = $this->_channelFileName($channel); $ret = true; if (file_exists($file)) { $ret = @unlink($file); } return $ret; } /* * Determine whether a channel exists in the registry * @param string Channel Alias * @return boolean / function _isChannelAlias($alias) { return file_exists($this->_getChannelAliasFileName($alias)); } /* * @param string\|null * @param string\|null * @param string\|null * @return array\|null * @access private / function _packageInfo($package = null, $key = null, $channel = 'pear.php.net') { if ($package === null) { if ($channel === null) { $channels = $this->_listChannels(); $ret = array(); foreach ($channels as $channel) { $channel = strtolower($channel); $ret[$channel] = array(); $packages = $this->_listPackages($channel); foreach ($packages as $package) { $ret[$channel][] = $this->_packageInfo($package, null, $channel); } } return $ret; } $ps = $this->_listPackages($channel); if (!count($ps)) { return array(); } return array_map(array(&$this, '_packageInfo'), $ps, array_fill(0, count($ps), null), array_fill(0, count($ps), $channel)); } $fp = $this->_openPackageFile($package, 'r', $channel); if ($fp === null) { return null; } clearstatcache(); $this->_closePackageFile($fp); $data = file_get_contents($this->_packageFileName($package, $channel)); $data = @unserialize($data); if ($key === null) { return $data; } // compatibility for package.xml version 2.0 if (isset($data['old'][$key])) { return $data['old'][$key]; } if (isset($data[$key])) { return $data[$key]; } return null; } /* * @param string Channel name * @param bool whether to strictly retrieve info of channels, not just aliases * @return array\|null / function _channelInfo($channel, $noaliases = false) { if (!$this->_channelExists($channel, $noaliases)) { return null; } $fp = $this->_openChannelFile($channel, 'r'); if ($fp === null) { return null; } clearstatcache(); $this->_closeChannelFile($fp); $data = file_get_contents($this->_channelFileName($channel)); $data = unserialize($data); return $data; } function _listChannels() { $channellist = array(); if (!file_exists($this->channelsdir) \|\| !is_dir($this->channelsdir)) { return array('pear.php.net', 'pecl.php.net', 'doc.php.net', '__uri'); } $dp = opendir($this->channelsdir); while ($ent = readdir($dp)) { if ($ent[0] == '.' \|\| substr($ent, -4) != '.reg') { continue; } if ($ent == '__uri.reg') { $channellist[] = '__uri'; continue; } $channellist[] = str_replace('_', '/', substr($ent, 0, -4)); } closedir($dp); if (!in_array('pear.php.net', $channellist)) { $channellist[] = 'pear.php.net'; } if (!in_array('pecl.php.net', $channellist)) { $channellist[] = 'pecl.php.net'; } if (!in_array('doc.php.net', $channellist)) { $channellist[] = 'doc.php.net'; } if (!in_array('__uri', $channellist)) { $channellist[] = '__uri'; } natsort($channellist); return $channellist; } function _listPackages($channel = false) { if ($channel && $this->_getChannelFromAlias($channel) != 'pear.php.net') { return $this->_listChannelPackages($channel); } if (!file_exists($this->statedir) \|\| !is_dir($this->statedir)) { return array(); } $pkglist = array(); $dp = opendir($this->statedir); if (!$dp) { return $pkglist; } while ($ent = readdir($dp)) { if ($ent[0] == '.' \|\| substr($ent, -4) != '.reg') { continue; } $pkglist[] = substr($ent, 0, -4); } closedir($dp); sort($pkglist); return $pkglist; } function _listChannelPackages($channel) { $pkglist = array(); if (!file_exists($this->_channelDirectoryName($channel)) \|\| !is_dir($this->_channelDirectoryName($channel))) { return array(); } $dp = opendir($this->_channelDirectoryName($channel)); if (!$dp) { return $pkglist; } while ($ent = readdir($dp)) { if ($ent[0] == '.' \|\| substr($ent, -4) != '.reg') { continue; } $pkglist[] = substr($ent, 0, -4); } closedir($dp); return $pkglist; } function _listAllPackages() { $ret = array(); foreach ($this->_listChannels() as $channel) { $ret[$channel] = $this->_listPackages($channel); } return $ret; } /* * Add an installed package to the registry * @param string package name * @param array package info (parsed by PEAR_Common::infoFrom() methods) @return bool success of saving * @access private / function _addPackage($package, $info) { if ($this->_packageExists($package)) { return false; } $fp = $this->_openPackageFile($package, 'wb'); if ($fp === null) { return false; } $info['_lastmodified'] = self::getSourceDateEpoch(); fwrite($fp, serialize($info)); $this->_closePackageFile($fp); if (isset($info['filelist'])) { $this->_rebuildFileMap(); } return true; } /* * @param PEAR_PackageFile_v1\|PEAR_PackageFile_v2 * @return bool * @access private / function _addPackage2($info) { if (!is_a($info, 'PEAR_PackageFile_v1') && !is_a($info, 'PEAR_PackageFile_v2')) { return false; } if (!$info->validate()) { if (class_exists('PEAR_Common')) { $ui = PEAR_Frontend::singleton(); if ($ui) { foreach ($info->getValidationWarnings() as $err) { $ui->log($err['message'], true); } } } return false; } $channel = $info->getChannel(); $package = $info->getPackage(); $save = $info; if ($this->_packageExists($package, $channel)) { return false; } if (!$this->_channelExists($channel, true)) { return false; } $info = $info->toArray(true); if (!$info) { return false; } $fp = $this->_openPackageFile($package, 'wb', $channel); if ($fp === null) { return false; } $info['_lastmodified'] = self::getSourceDateEpoch(); fwrite($fp, serialize($info)); $this->_closePackageFile($fp); $this->_rebuildFileMap(); return true; } /* * @param string Package name * @param array parsed package.xml 1.0 * @param bool this parameter is only here for BC. Don't use it. * @access private / function _updatePackage($package, $info, $merge = true) { $oldinfo = $this->_packageInfo($package); if (empty($oldinfo)) { return false; } $fp = $this->_openPackageFile($package, 'w'); if ($fp === null) { return false; } if (is_object($info)) { $info = $info->toArray(); } $info['_lastmodified'] = self::getSourceDateEpoch(); $newinfo = $info; if ($merge) { $info = array_merge($oldinfo, $info); } else { $diff = $info; } fwrite($fp, serialize($info)); $this->_closePackageFile($fp); if (isset($newinfo['filelist'])) { $this->_rebuildFileMap(); } return true; } /* * @param PEAR_PackageFile_v1\|PEAR_PackageFile_v2 * @return bool * @access private / function _updatePackage2($info) { if (!$this->_packageExists($info->getPackage(), $info->getChannel())) { return false; } $fp = $this->_openPackageFile($info->getPackage(), 'w', $info->getChannel()); if ($fp === null) { return false; } $save = $info; $info = $save->getArray(true); $info['_lastmodified'] = self::getSourceDateEpoch(); fwrite($fp, serialize($info)); $this->_closePackageFile($fp); $this->_rebuildFileMap(); return true; } /* * @param string Package name * @param string Channel name * @return PEAR_PackageFile_v1\|PEAR_PackageFile_v2\|null * @access private / function &_getPackage($package, $channel = 'pear.php.net') { $info = $this->_packageInfo($package, null, $channel); if ($info === null) { return $info; } $a = $this->_config; if (!$a) { $this->_config = new PEAR_Config; $this->_config->set('php_dir', $this->statedir); } if (!class_exists('PEAR_PackageFile')) { require_once 'PEAR/PackageFile.php'; } $pkg = new PEAR_PackageFile($this->_config); $pf = &$pkg->fromArray($info); return $pf; } /* * @param string channel name * @param bool whether to strictly retrieve channel names * @return PEAR_ChannelFile\|PEAR_Error * @access private / function &_getChannel($channel, $noaliases = false) { $ch = false; if ($this->_channelExists($channel, $noaliases)) { $chinfo = $this->_channelInfo($channel, $noaliases); if ($chinfo) { if (!class_exists('PEAR_ChannelFile')) { require_once 'PEAR/ChannelFile.php'; } $ch = &PEAR_ChannelFile::fromArrayWithErrors($chinfo); } } if ($ch) { if ($ch->validate()) { return $ch; } foreach ($ch->getErrors(true) as $err) { $message = $err['message'] . "\n"; } $ch = PEAR::raiseError($message); return $ch; } if ($this->_getChannelFromAlias($channel) == 'pear.php.net') { // the registry is not properly set up, so use defaults if (!class_exists('PEAR_ChannelFile')) { require_once 'PEAR/ChannelFile.php'; } $pear_channel = new PEAR_ChannelFile; $pear_channel->setServer('pear.php.net'); $pear_channel->setAlias('pear'); $pear_channel->setSummary('PHP Extension and Application Repository'); $pear_channel->setDefaultPEARProtocols(); $pear_channel->setBaseURL('REST1.0', 'http://pear.php.net/rest/'); $pear_channel->setBaseURL('REST1.1', 'http://pear.php.net/rest/'); $pear_channel->setBaseURL('REST1.3', 'http://pear.php.net/rest/'); return $pear_channel; } if ($this->_getChannelFromAlias($channel) == 'pecl.php.net') { // the registry is not properly set up, so use defaults if (!class_exists('PEAR_ChannelFile')) { require_once 'PEAR/ChannelFile.php'; } $pear_channel = new PEAR_ChannelFile; $pear_channel->setServer('pecl.php.net'); $pear_channel->setAlias('pecl'); $pear_channel->setSummary('PHP Extension Community Library'); $pear_channel->setDefaultPEARProtocols(); $pear_channel->setBaseURL('REST1.0', 'http://pecl.php.net/rest/'); $pear_channel->setBaseURL('REST1.1', 'http://pecl.php.net/rest/'); $pear_channel->setValidationPackage('PEAR_Validator_PECL', '1.0'); return $pear_channel; } if ($this->_getChannelFromAlias($channel) == 'doc.php.net') { // the registry is not properly set up, so use defaults if (!class_exists('PEAR_ChannelFile')) { require_once 'PEAR/ChannelFile.php'; } $doc_channel = new PEAR_ChannelFile; $doc_channel->setServer('doc.php.net'); $doc_channel->setAlias('phpdocs'); $doc_channel->setSummary('PHP Documentation Team'); $doc_channel->setDefaultPEARProtocols(); $doc_channel->setBaseURL('REST1.0', 'http://doc.php.net/rest/'); $doc_channel->setBaseURL('REST1.1', 'http://doc.php.net/rest/'); $doc_channel->setBaseURL('REST1.3', 'http://doc.php.net/rest/'); return $doc_channel; } if ($this->_getChannelFromAlias($channel) == '__uri') { // the registry is not properly set up, so use defaults if (!class_exists('PEAR_ChannelFile')) { require_once 'PEAR/ChannelFile.php'; } $private = new PEAR_ChannelFile; $private->setName('__uri'); $private->setDefaultPEARProtocols(); $private->setBaseURL('REST1.0', '*'); $private->setSummary('Pseudo-channel for static packages'); return $private; } return $ch; } / * @param string Package name * @param string Channel name * @return bool / function packageExists($package, $channel = 'pear.php.net') { if (PEAR::isError($e = $this->_lock(LOCK_SH))) { return $e; } $ret = $this->_packageExists($package, $channel); $this->_unlock(); return $ret; } // }}} // {{{ channelExists() /* * @param string channel name * @param bool if true, then aliases will be ignored * @return bool / function channelExists($channel, $noaliases = false) { if (PEAR::isError($e = $this->_lock(LOCK_SH))) { return $e; } $ret = $this->_channelExists($channel, $noaliases); $this->_unlock(); return $ret; } // }}} /* * @param string channel name mirror is in * @param string mirror name * * @return bool / function mirrorExists($channel, $mirror) { if (PEAR::isError($e = $this->_lock(LOCK_SH))) { return $e; } $ret = $this->_mirrorExists($channel, $mirror); $this->_unlock(); return $ret; } // {{{ isAlias() /* * Determines whether the parameter is an alias of a channel * @param string * @return bool / function isAlias($alias) { if (PEAR::isError($e = $this->_lock(LOCK_SH))) { return $e; } $ret = $this->_isChannelAlias($alias); $this->_unlock(); return $ret; } // }}} // {{{ packageInfo() /* * @param string\|null * @param string\|null * @param string * @return array\|null / function packageInfo($package = null, $key = null, $channel = 'pear.php.net') { if (PEAR::isError($e = $this->_lock(LOCK_SH))) { return $e; } $ret = $this->_packageInfo($package, $key, $channel); $this->_unlock(); return $ret; } // }}} // {{{ channelInfo() /* * Retrieve a raw array of channel data. * * Do not use this, instead use {@link getChannel()} for normal * operations. Array structure is undefined in this method * @param string channel name * @param bool whether to strictly retrieve information only on non-aliases * @return array\|null\|PEAR_Error / function channelInfo($channel = null, $noaliases = false) { if (PEAR::isError($e = $this->_lock(LOCK_SH))) { return $e; } $ret = $this->_channelInfo($channel, $noaliases); $this->_unlock(); return $ret; } // }}} /* * @param string / function channelName($channel) { if (PEAR::isError($e = $this->_lock(LOCK_SH))) { return $e; } $ret = $this->_getChannelFromAlias($channel); $this->_unlock(); return $ret; } /* * @param string / function channelAlias($channel) { if (PEAR::isError($e = $this->_lock(LOCK_SH))) { return $e; } $ret = $this->_getAlias($channel); $this->_unlock(); return $ret; } // {{{ listPackages() function listPackages($channel = false) { if (PEAR::isError($e = $this->_lock(LOCK_SH))) { return $e; } $ret = $this->_listPackages($channel); $this->_unlock(); return $ret; } // }}} // {{{ listAllPackages() function listAllPackages() { if (PEAR::isError($e = $this->_lock(LOCK_SH))) { return $e; } $ret = $this->_listAllPackages(); $this->_unlock(); return $ret; } // }}} // {{{ listChannel() function listChannels() { if (PEAR::isError($e = $this->_lock(LOCK_SH))) { return $e; } $ret = $this->_listChannels(); $this->_unlock(); return $ret; } // }}} // {{{ addPackage() /* * Add an installed package to the registry * @param string\|PEAR_PackageFile_v1\|PEAR_PackageFile_v2 package name or object * that will be passed to {@link addPackage2()} * @param array package info (parsed by PEAR_Common::infoFrom() methods) @return bool success of saving / function addPackage($package, $info) { if (is_object($info)) { return $this->addPackage2($info); } if (PEAR::isError($e = $this->_lock(LOCK_EX))) { return $e; } $ret = $this->_addPackage($package, $info); $this->_unlock(); if ($ret) { if (!class_exists('PEAR_PackageFile_v1')) { require_once 'PEAR/PackageFile/v1.php'; } $pf = new PEAR_PackageFile_v1; $pf->setConfig($this->_config); $pf->fromArray($info); $this->_dependencyDB->uninstallPackage($pf); $this->_dependencyDB->installPackage($pf); } return $ret; } // }}} // {{{ addPackage2() function addPackage2($info) { if (!is_object($info)) { return $this->addPackage($info['package'], $info); } if (PEAR::isError($e = $this->_lock(LOCK_EX))) { return $e; } $ret = $this->_addPackage2($info); $this->_unlock(); if ($ret) { $this->_dependencyDB->uninstallPackage($info); $this->_dependencyDB->installPackage($info); } return $ret; } // }}} // {{{ updateChannel() /* * For future expandibility purposes, separate this * @param PEAR_ChannelFile / function updateChannel($channel, $lastmodified = null) { if ($channel->getName() == '__uri') { return false; } return $this->addChannel($channel, $lastmodified, true); } // }}} // {{{ deleteChannel() /* * Deletion fails if there are any packages installed from the channel * @param string\|PEAR_ChannelFile channel name * @return boolean\|PEAR_Error True on deletion, false if it doesn't exist / function deleteChannel($channel) { if (PEAR::isError($e = $this->_lock(LOCK_EX))) { return $e; } $ret = $this->_deleteChannel($channel); $this->_unlock(); if ($ret && is_a($this->_config, 'PEAR_Config')) { $this->_config->setChannels($this->listChannels()); } return $ret; } // }}} // {{{ addChannel() /* * @param PEAR_ChannelFile Channel object * @param string Last-Modified header from HTTP for caching * @return boolean\|PEAR_Error True on creation, false if it already exists / function addChannel($channel, $lastmodified = false, $update = false) { if (!is_a($channel, 'PEAR_ChannelFile') \|\| !$channel->validate()) { return false; } if (PEAR::isError($e = $this->_lock(LOCK_EX))) { return $e; } $ret = $this->_addChannel($channel, $update, $lastmodified); $this->_unlock(); if (!$update && $ret && is_a($this->_config, 'PEAR_Config')) { $this->_config->setChannels($this->listChannels()); } return $ret; } // }}} // {{{ deletePackage() function deletePackage($package, $channel = 'pear.php.net') { if (PEAR::isError($e = $this->_lock(LOCK_EX))) { return $e; } $file = $this->_packageFileName($package, $channel); $ret = file_exists($file) ? @unlink($file) : false; $this->_rebuildFileMap(); $this->_unlock(); $p = array('channel' => $channel, 'package' => $package); $this->_dependencyDB->uninstallPackage($p); return $ret; } // }}} // {{{ updatePackage() function updatePackage($package, $info, $merge = true) { if (is_object($info)) { return $this->updatePackage2($info, $merge); } if (PEAR::isError($e = $this->_lock(LOCK_EX))) { return $e; } $ret = $this->_updatePackage($package, $info, $merge); $this->_unlock(); if ($ret) { if (!class_exists('PEAR_PackageFile_v1')) { require_once 'PEAR/PackageFile/v1.php'; } $pf = new PEAR_PackageFile_v1; $pf->setConfig($this->_config); $pf->fromArray($this->packageInfo($package)); $this->_dependencyDB->uninstallPackage($pf); $this->_dependencyDB->installPackage($pf); } return $ret; } // }}} // {{{ updatePackage2() function updatePackage2($info) { if (!is_object($info)) { return $this->updatePackage($info['package'], $info, $merge); } if (!$info->validate(PEAR_VALIDATE_DOWNLOADING)) { return false; } if (PEAR::isError($e = $this->_lock(LOCK_EX))) { return $e; } $ret = $this->_updatePackage2($info); $this->_unlock(); if ($ret) { $this->_dependencyDB->uninstallPackage($info); $this->_dependencyDB->installPackage($info); } return $ret; } // }}} // {{{ getChannel() /* * @param string channel name * @param bool whether to strictly return raw channels (no aliases) * @return PEAR_ChannelFile\|PEAR_Error / function getChannel($channel, $noaliases = false) { if (PEAR::isError($e = $this->_lock(LOCK_SH))) { return $e; } $ret = $this->_getChannel($channel, $noaliases); $this->_unlock(); if (!$ret) { return PEAR::raiseError('Unknown channel: ' . $channel); } return $ret; } // }}} // {{{ getPackage() /* * @param string package name * @param string channel name * @return PEAR_PackageFile_v1\|PEAR_PackageFile_v2\|null / function &getPackage($package, $channel = 'pear.php.net') { if (PEAR::isError($e = $this->_lock(LOCK_SH))) { return $e; } $pf = &$this->_getPackage($package, $channel); $this->_unlock(); return $pf; } // }}} /* * Get PEAR_PackageFile_v[1/2] objects representing the contents of * a dependency group that are installed. * * This is used at uninstall-time * @param array * @return array\|false / function getInstalledGroup($group) { $ret = array(); if (isset($group['package'])) { if (!isset($group['package'][0])) { $group['package'] = array($group['package']); } foreach ($group['package'] as $package) { $depchannel = isset($package['channel']) ? $package['channel'] : '__uri'; $p = &$this->getPackage($package['name'], $depchannel); if ($p) { $save = &$p; $ret[] = &$save; } } } if (isset($group['subpackage'])) { if (!isset($group['subpackage'][0])) { $group['subpackage'] = array($group['subpackage']); } foreach ($group['subpackage'] as $package) { $depchannel = isset($package['channel']) ? $package['channel'] : '__uri'; $p = &$this->getPackage($package['name'], $depchannel); if ($p) { $save = &$p; $ret[] = &$save; } } } if (!count($ret)) { return false; } return $ret; } // {{{ getChannelValidator() /* * @param string channel name * @return PEAR_Validate\|false / function &getChannelValidator($channel) { $chan = $this->getChannel($channel); if (PEAR::isError($chan)) { return $chan; } $val = $chan->getValidationObject(); return $val; } // }}} // {{{ getChannels() /* * @param string channel name * @return array an array of PEAR_ChannelFile objects representing every installed channel / function &getChannels() { $ret = array(); if (PEAR::isError($e = $this->_lock(LOCK_SH))) { return $e; } foreach ($this->_listChannels() as $channel) { $e = &$this->_getChannel($channel); if (!$e \|\| PEAR::isError($e)) { continue; } $ret[] = $e; } $this->_unlock(); return $ret; } // }}} // {{{ checkFileMap() /* * Test whether a file or set of files belongs to a package. * * If an array is passed in * @param string\|array file path, absolute or relative to the pear * install dir * @param string\|array name of PEAR package or array('package' => name, 'channel' => * channel) of a package that will be ignored * @param string API version - 1.1 will exclude any files belonging to a package * @param array private recursion variable * @return array\|false which package and channel the file belongs to, or an empty * string if the file does not belong to an installed package, * or belongs to the second parameter's package / function checkFileMap($path, $package = false, $api = '1.0', $attrs = false) { if (is_array($path)) { static $notempty; if (empty($notempty)) { if (!class_exists('PEAR_Installer_Role')) { require_once 'PEAR/Installer/Role.php'; } $notempty = function($a) { return !empty($a); }; } $package = is_array($package) ? array(strtolower($package[0]), strtolower($package[1])) : strtolower($package); $pkgs = array(); foreach ($path as $name => $attrs) { if (is_array($attrs)) { if (isset($attrs['install-as'])) { $name = $attrs['install-as']; } if (!in_array($attrs['role'], PEAR_Installer_Role::getInstallableRoles())) { // these are not installed continue; } if (!in_array($attrs['role'], PEAR_Installer_Role::getBaseinstallRoles())) { $attrs['baseinstalldir'] = is_array($package) ? $package[1] : $package; } if (isset($attrs['baseinstalldir'])) { $name = $attrs['baseinstalldir'] . DIRECTORY_SEPARATOR . $name; } } $pkgs[$name] = $this->checkFileMap($name, $package, $api, $attrs); if (PEAR::isError($pkgs[$name])) { return $pkgs[$name]; } } return array_filter($pkgs, $notempty); } if (empty($this->filemap_cache)) { if (PEAR::isError($e = $this->_lock(LOCK_SH))) { return $e; } $err = $this->_readFileMap(); $this->_unlock(); if (PEAR::isError($err)) { return $err; } } if (!$attrs) { $attrs = array('role' => 'php'); // any old call would be for PHP role only } if (isset($this->filemap_cache[$attrs['role']][$path])) { if ($api >= '1.1' && $this->filemap_cache[$attrs['role']][$path] == $package) { return false; } return $this->filemap_cache[$attrs['role']][$path]; } $l = strlen($this->install_dir); if (substr($path, 0, $l) == $this->install_dir) { $path = preg_replace('!^'.DIRECTORY_SEPARATOR.'+!', '', substr($path, $l)); } if (isset($this->filemap_cache[$attrs['role']][$path])) { if ($api >= '1.1' && $this->filemap_cache[$attrs['role']][$path] == $package) { return false; } return $this->filemap_cache[$attrs['role']][$path]; } return false; } // }}} // {{{ flush() /* * Force a reload of the filemap * @since 1.5.0RC3 / function flushFileMap() { $this->filemap_cache = null; clearstatcache(); // ensure that the next read gets the full, current filemap } // }}} // {{{ apiVersion() /* * Get the expected API version. Channels API is version 1.1, as it is backwards * compatible with 1.0 * @return string / function apiVersion() { return '1.1'; } // }}} /* * Parse a package name, or validate a parsed package name array * @param string\|array pass in an array of format * array( * 'package' => 'pname', * ['channel' => 'channame',] * ['version' => 'version',] * ['state' => 'state',] * ['group' => 'groupname']) * or a string of format * [channel://][channame/]pname[-version\|-state][/group=groupname] * @return array\|PEAR_Error / function parsePackageName($param, $defaultchannel = 'pear.php.net') { $saveparam = $param; if (is_array($param)) { // convert to string for error messages $saveparam = $this->parsedPackageNameToString($param); // process the array if (!isset($param['package'])) { return PEAR::raiseError('parsePackageName(): array $param ' . 'must contain a valid package name in index "param"', 'package', null, null, $param); } if (!isset($param['uri'])) { if (!isset($param['channel'])) { $param['channel'] = $defaultchannel; } } else { $param['channel'] = '__uri'; } } else { $components = @parse_url((string) $param); if (isset($components['scheme'])) { if ($components['scheme'] == 'http') { // uri package $param = array('uri' => $param, 'channel' => '__uri'); } elseif($components['scheme'] != 'channel') { return PEAR::raiseError('parsePackageName(): only channel:// uris may ' . 'be downloaded, not "' . $param . '"', 'invalid', null, null, $param); } } if (!isset($components['path'])) { return PEAR::raiseError('parsePackageName(): array $param ' . 'must contain a valid package name in "' . $param . '"', 'package', null, null, $param); } if (isset($components['host'])) { // remove the leading "/" $components['path'] = substr($components['path'], 1); } if (!isset($components['scheme'])) { if (strpos($components['path'], '/') !== false) { if ($components['path'][0] == '/') { return PEAR::raiseError('parsePackageName(): this is not ' . 'a package name, it begins with "/" in "' . $param . '"', 'invalid', null, null, $param); } $parts = explode('/', $components['path']); $components['host'] = array_shift($parts); if (count($parts) > 1) { $components['path'] = array_pop($parts); $components['host'] .= '/' . implode('/', $parts); } else { $components['path'] = implode('/', $parts); } } else { $components['host'] = $defaultchannel; } } else { if (strpos($components['path'], '/')) { $parts = explode('/', $components['path']); $components['path'] = array_pop($parts); $components['host'] .= '/' . implode('/', $parts); } } if (is_array($param)) { $param['package'] = $components['path']; } else { $param = array( 'package' => $components['path'] ); if (isset($components['host'])) { $param['channel'] = $components['host']; } } if (isset($components['fragment'])) { $param['group'] = $components['fragment']; } if (isset($components['user'])) { $param['user'] = $components['user']; } if (isset($components['pass'])) { $param['pass'] = $components['pass']; } if (isset($components['query'])) { parse_str($components['query'], $param['opts']); } // check for extension $pathinfo = pathinfo($param['package']); if (isset($pathinfo['extension']) && in_array(strtolower($pathinfo['extension']), array('tgz', 'tar'))) { $param['extension'] = $pathinfo['extension']; $param['package'] = substr($pathinfo['basename'], 0, strlen($pathinfo['basename']) - 4); } // check for version if (strpos($param['package'], '-')) { $test = explode('-', $param['package']); if (count($test) != 2) { return PEAR::raiseError('parsePackageName(): only one version/state ' . 'delimiter "-" is allowed in "' . $saveparam . '"', 'version', null, null, $param); } list($param['package'], $param['version']) = $test; } } // validation $info = $this->channelExists($param['channel']); if (PEAR::isError($info)) { return $info; } if (!$info) { return PEAR::raiseError('unknown channel "' . $param['channel'] . '" in "' . $saveparam . '"', 'channel', null, null, $param); } $chan = $this->getChannel($param['channel']); if (PEAR::isError($chan)) { return $chan; } if (!$chan) { return PEAR::raiseError("Exception: corrupt registry, could not " . "retrieve channel " . $param['channel'] . " information", 'registry', null, null, $param); } $param['channel'] = $chan->getName(); $validate = $chan->getValidationObject(); $vpackage = $chan->getValidationPackage(); // validate package name if (!$validate->validPackageName($param['package'], $vpackage['_content'])) { return PEAR::raiseError('parsePackageName(): invalid package name "' . $param['package'] . '" in "' . $saveparam . '"', 'package', null, null, $param); } if (isset($param['group'])) { if (!PEAR_Validate::validGroupName($param['group'])) { return PEAR::raiseError('parsePackageName(): dependency group "' . $param['group'] . '" is not a valid group name in "' . $saveparam . '"', 'group', null, null, $param); } } if (isset($param['state'])) { if (!in_array(strtolower($param['state']), $validate->getValidStates())) { return PEAR::raiseError('parsePackageName(): state "' . $param['state'] . '" is not a valid state in "' . $saveparam . '"', 'state', null, null, $param); } } if (isset($param['version'])) { if (isset($param['state'])) { return PEAR::raiseError('parsePackageName(): cannot contain both ' . 'a version and a stability (state) in "' . $saveparam . '"', 'version/state', null, null, $param); } // check whether version is actually a state if (in_array(strtolower($param['version']), $validate->getValidStates())) { $param['state'] = strtolower($param['version']); unset($param['version']); } else { if (!$validate->validVersion($param['version'])) { return PEAR::raiseError('parsePackageName(): "' . $param['version'] . '" is neither a valid version nor a valid state in "' . $saveparam . '"', 'version/state', null, null, $param); } } } return $param; } /* * @param array * @return string */ function parsedPackageNameToString($parsed, $brief = false) { if (is_string($parsed)) { return $parsed; } if (is_object($parsed)) { $p = $parsed; $parsed = array( 'package' => $p->getPackage(), 'channel' => $p->getChannel(), 'version' => $p->getVersion(), ); } if (isset($parsed['uri'])) { return $parsed['uri']; } if ($brief) { if ($channel = $this->channelAlias($parsed['channel'])) { return $channel . '/' . $parsed['package']; } } $upass = ''; if (isset($parsed['user'])) { $upass = $parsed['user']; if (isset($parsed['pass'])) { $upass .= ':' . $parsed['pass']; } $upass = "$upass@"; } $ret = 'channel://' . $upass . $parsed['channel'] . '/' . $parsed['package']; if (isset($parsed['version']) \|\| isset($parsed['state'])) { $ver = isset($parsed['version']) ? $parsed['version'] : ''; $ver .= isset($parsed['state']) ? $parsed['state'] : ''; $ret .= '-' . $ver; } if (isset($parsed['extension'])) { $ret .= '.' . $parsed['extension']; } if (isset($parsed['opts'])) { $ret .= '?'; foreach ($parsed['opts'] as $name => $value) { $parsed['opts'][$name] = "$name=$value"; } $ret .= implode('&', $parsed['opts']); } if (isset($parsed['group'])) { $ret .= '#' . $parsed['group']; } return $ret; } } Back

Edit File : Registry.php | Size : 74.18 KB

<?php
/**
 * PEAR_Registry
 *
 * PHP versions 4 and 5
 *
 * @category   pear
 * @package    PEAR
 * @author     Stig Bakken <ssb@php.net>
 * @author     Tomas V. V. Cox <cox@idecnet.com>
 * @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
 */

/**
 * for PEAR_Error
 */
require_once 'PEAR.php';
require_once 'PEAR/DependencyDB.php';

define('PEAR_REGISTRY_ERROR_LOCK',         -2);
define('PEAR_REGISTRY_ERROR_FORMAT',       -3);
define('PEAR_REGISTRY_ERROR_FILE',         -4);
define('PEAR_REGISTRY_ERROR_CONFLICT',     -5);
define('PEAR_REGISTRY_ERROR_CHANNEL_FILE', -6);

/**
 * Administration class used to maintain the installed package database.
 * @category   pear
 * @package    PEAR
 * @author     Stig Bakken <ssb@php.net>
 * @author     Tomas V. V. Cox <cox@idecnet.com>
 * @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 1.4.0a1
 */
class PEAR_Registry extends PEAR
{
    /**
     * File containing all channel information.
     * @var string
     */
    var $channels = '';

/** Directory where registry files are stored.
     * @var string
     */
    var $statedir = '';

/** File where the file map is stored
     * @var string
     */
    var $filemap = '';

/** Directory where registry files for channels are stored.
     * @var string
     */
    var $channelsdir = '';

/** Name of file used for locking the registry
     * @var string
     */
    var $lockfile = '';

/** File descriptor used during locking
     * @var resource
     */
    var $lock_fp = null;

/** Mode used during locking
     * @var int
     */
    var $lock_mode = 0; // XXX UNUSED

/** Cache of package information.  Structure:
     * array(
     *   'package' => array('id' => ... ),
     *   ... )
     * @var array
     */
    var $pkginfo_cache = array();

/** Cache of file map.  Structure:
     * array( '/path/to/file' => 'package', ... )
     * @var array
     */
    var $filemap_cache = array();

/**
     * @var false|PEAR_ChannelFile
     */
    var $_pearChannel;

/**
     * @var false|PEAR_ChannelFile
     */
    var $_peclChannel;

/**
     * @var false|PEAR_ChannelFile
     */
    var $_docChannel;

/**
     * @var PEAR_DependencyDB
     */
    var $_dependencyDB;

/**
     * @var PEAR_Config
     */
    var $_config;

/**
     * PEAR_Registry constructor.
     *
     * @param string (optional) PEAR install directory (for .php files)
     * @param PEAR_ChannelFile PEAR_ChannelFile object representing the PEAR channel, if
     *        default values are not desired.  Only used the very first time a PEAR
     *        repository is initialized
     * @param PEAR_ChannelFile PEAR_ChannelFile object representing the PECL channel, if
     *        default values are not desired.  Only used the very first time a PEAR
     *        repository is initialized
     *
     * @access public
     */
    function __construct($pear_install_dir = PEAR_INSTALL_DIR, $pear_channel = false,
                           $pecl_channel = false, $pear_metadata_dir = '')
    {
        parent::__construct();
        $this->setInstallDir($pear_install_dir, $pear_metadata_dir);
        $this->_pearChannel = $pear_channel;
        $this->_peclChannel = $pecl_channel;
        $this->_config      = false;
    }

function setInstallDir($pear_install_dir = PEAR_INSTALL_DIR, $pear_metadata_dir = '')
    {
        $ds = DIRECTORY_SEPARATOR;
        $this->install_dir = $pear_install_dir;
        if (!$pear_metadata_dir) {
            $pear_metadata_dir = $pear_install_dir;
        }
        $this->channelsdir = $pear_metadata_dir.$ds.'.channels';
        $this->statedir    = $pear_metadata_dir.$ds.'.registry';
        $this->filemap     = $pear_metadata_dir.$ds.'.filemap';
        $this->lockfile    = $pear_metadata_dir.$ds.'.lock';
    }

function hasWriteAccess()
    {
        if (!file_exists($this->install_dir)) {
            $dir = $this->install_dir;
            while ($dir && $dir != '.') {
                $olddir = $dir;
                $dir    = dirname($dir);
                if ($dir != '.' && file_exists($dir)) {
                    if (is_writeable($dir)) {
                        return true;
                    }

return false;
                }

if ($dir == $olddir) { // this can happen in safe mode
                    return @is_writable($dir);
                }
            }

return false;
        }

return is_writeable($this->install_dir);
    }

function setConfig(&$config, $resetInstallDir = true)
    {
        $this->_config = &$config;
        if ($resetInstallDir) {
            $this->setInstallDir($config->get('php_dir'), $config->get('metadata_dir'));
        }
    }

function _initializeChannelDirs()
    {
        static $running = false;
        if (!$running) {
            $running = true;
            $ds = DIRECTORY_SEPARATOR;
            if (!is_dir($this->channelsdir) ||
                  !file_exists($this->channelsdir . $ds . 'pear.php.net.reg') ||
                  !file_exists($this->channelsdir . $ds . 'pecl.php.net.reg') ||
                  !file_exists($this->channelsdir . $ds . 'doc.php.net.reg') ||
                  !file_exists($this->channelsdir . $ds . '__uri.reg')) {
                if (!file_exists($this->channelsdir . $ds . 'pear.php.net.reg')) {
                    $pear_channel = $this->_pearChannel;
                    if (!is_a($pear_channel, 'PEAR_ChannelFile') || !$pear_channel->validate()) {
                        if (!class_exists('PEAR_ChannelFile')) {
                            require_once 'PEAR/ChannelFile.php';
                        }

$pear_channel = new PEAR_ChannelFile;
                        $pear_channel->setAlias('pear');
                        $pear_channel->setServer('pear.php.net');
                        $pear_channel->setSummary('PHP Extension and Application Repository');
                        $pear_channel->setDefaultPEARProtocols();
                        $pear_channel->setBaseURL('REST1.0', 'http://pear.php.net/rest/');
                        $pear_channel->setBaseURL('REST1.1', 'http://pear.php.net/rest/');
                        $pear_channel->setBaseURL('REST1.3', 'http://pear.php.net/rest/');
                        //$pear_channel->setBaseURL('REST1.4', 'http://pear.php.net/rest/');
                    } else {
                        $pear_channel->setServer('pear.php.net');
                        $pear_channel->setAlias('pear');
                    }

$pear_channel->validate();
                    $this->_addChannel($pear_channel);
                }

if (!file_exists($this->channelsdir . $ds . 'pecl.php.net.reg')) {
                    $pecl_channel = $this->_peclChannel;
                    if (!is_a($pecl_channel, 'PEAR_ChannelFile') || !$pecl_channel->validate()) {
                        if (!class_exists('PEAR_ChannelFile')) {
                            require_once 'PEAR/ChannelFile.php';
                        }

$pecl_channel = new PEAR_ChannelFile;
                        $pecl_channel->setAlias('pecl');
                        $pecl_channel->setServer('pecl.php.net');
                        $pecl_channel->setSummary('PHP Extension Community Library');
                        $pecl_channel->setDefaultPEARProtocols();
                        $pecl_channel->setBaseURL('REST1.0', 'http://pecl.php.net/rest/');
                        $pecl_channel->setBaseURL('REST1.1', 'http://pecl.php.net/rest/');
                        $pecl_channel->setValidationPackage('PEAR_Validator_PECL', '1.0');
                    } else {
                        $pecl_channel->setServer('pecl.php.net');
                        $pecl_channel->setAlias('pecl');
                    }

$pecl_channel->validate();
                    $this->_addChannel($pecl_channel);
                }

if (!file_exists($this->channelsdir . $ds . 'doc.php.net.reg')) {
                    $doc_channel = $this->_docChannel;
                    if (!is_a($doc_channel, 'PEAR_ChannelFile') || !$doc_channel->validate()) {
                        if (!class_exists('PEAR_ChannelFile')) {
                            require_once 'PEAR/ChannelFile.php';
                        }

$doc_channel = new PEAR_ChannelFile;
                        $doc_channel->setAlias('phpdocs');
                        $doc_channel->setServer('doc.php.net');
                        $doc_channel->setSummary('PHP Documentation Team');
                        $doc_channel->setDefaultPEARProtocols();
                        $doc_channel->setBaseURL('REST1.0', 'http://doc.php.net/rest/');
                        $doc_channel->setBaseURL('REST1.1', 'http://doc.php.net/rest/');
                        $doc_channel->setBaseURL('REST1.3', 'http://doc.php.net/rest/');
                    } else {
                        $doc_channel->setServer('doc.php.net');
                        $doc_channel->setAlias('doc');
                    }

$doc_channel->validate();
                    $this->_addChannel($doc_channel);
                }

if (!file_exists($this->channelsdir . $ds . '__uri.reg')) {
                    if (!class_exists('PEAR_ChannelFile')) {
                        require_once 'PEAR/ChannelFile.php';
                    }

$private = new PEAR_ChannelFile;
                    $private->setName('__uri');
                    $private->setDefaultPEARProtocols();
                    $private->setBaseURL('REST1.0', '****');
                    $private->setSummary('Pseudo-channel for static packages');
                    $this->_addChannel($private);
                }
                $this->_rebuildFileMap();
            }

$running = false;
        }
    }

$this->_initializeChannelDirs();
        if (!file_exists($this->filemap)) {
            $this->_rebuildFileMap();
        }
        $this->_initializeDepDB();
    }

function _initializeDepDB()
    {
        if (!isset($this->_dependencyDB)) {
            static $initializing = false;
            if (!$initializing) {
                $initializing = true;
                if (!$this->_config) { // never used?
                    $file = OS_WINDOWS ? 'pear.ini' : '.pearrc';
                    $this->_config = new PEAR_Config($this->statedir . DIRECTORY_SEPARATOR .
                        $file);
                    $this->_config->setRegistry($this);
                    $this->_config->set('php_dir', $this->install_dir);
                }

$this->_dependencyDB = &PEAR_DependencyDB::singleton($this->_config);
                if (PEAR::isError($this->_dependencyDB)) {
                    // attempt to recover by removing the dep db
                    if (file_exists($this->_config->get('metadata_dir', null, 'pear.php.net') .
                        DIRECTORY_SEPARATOR . '.depdb')) {
                        @unlink($this->_config->get('metadata_dir', null, 'pear.php.net') .
                            DIRECTORY_SEPARATOR . '.depdb');
                    }

$this->_dependencyDB = &PEAR_DependencyDB::singleton($this->_config);
                    if (PEAR::isError($this->_dependencyDB)) {
                        echo $this->_dependencyDB->getMessage();
                        echo 'Unrecoverable error';
                        exit(1);
                    }
                }

$initializing = false;
            }
        }
    }

/**
     * PEAR_Registry destructor.  Makes sure no locks are forgotten.
     *
     * @access private
     */
    function _PEAR_Registry()
    {
        parent::_PEAR();
        if (is_resource($this->lock_fp)) {
            $this->_unlock();
        }
    }

/**
     * Make sure the directory where we keep registry files exists.
     *
     * @return bool TRUE if directory exists, FALSE if it could not be
     * created
     *
     * @access private
     */
    function _assertStateDir($channel = false)
    {
        if ($channel && $this->_getChannelFromAlias($channel) != 'pear.php.net') {
            return $this->_assertChannelStateDir($channel);
        }

static $init = false;
        if (!file_exists($this->statedir)) {
            if (!$this->hasWriteAccess()) {
                return false;
            }

require_once 'System.php';
            if (!System::mkdir(array('-p', $this->statedir))) {
                return $this->raiseError("could not create directory '{$this->statedir}'");
            }
            $init = true;
        } elseif (!is_dir($this->statedir)) {
            return $this->raiseError('Cannot create directory ' . $this->statedir . ', ' .
                'it already exists and is not a directory');
        }

$ds = DIRECTORY_SEPARATOR;
        if (!file_exists($this->channelsdir)) {
            if (!file_exists($this->channelsdir . $ds . 'pear.php.net.reg') ||
                  !file_exists($this->channelsdir . $ds . 'pecl.php.net.reg') ||
                  !file_exists($this->channelsdir . $ds . 'doc.php.net.reg') ||
                  !file_exists($this->channelsdir . $ds . '__uri.reg')) {
                $init = true;
            }
        } elseif (!is_dir($this->channelsdir)) {
            return $this->raiseError('Cannot create directory ' . $this->channelsdir . ', ' .
                'it already exists and is not a directory');
        }

if ($init) {
            static $running = false;
            if (!$running) {
                $running = true;
                $this->_initializeDirs();
                $running = false;
                $init = false;
            }
        } else {
            $this->_initializeDepDB();
        }

return true;
    }

/**
     * Make sure the directory where we keep registry files exists for a non-standard channel.
     *
     * @param string channel name
     * @return bool TRUE if directory exists, FALSE if it could not be
     * created
     *
     * @access private
     */
    function _assertChannelStateDir($channel)
    {
        $ds = DIRECTORY_SEPARATOR;
        if (!$channel || $this->_getChannelFromAlias($channel) == 'pear.php.net') {
            if (!file_exists($this->channelsdir . $ds . 'pear.php.net.reg')) {
                $this->_initializeChannelDirs();
            }
            return $this->_assertStateDir($channel);
        }

$channelDir = $this->_channelDirectoryName($channel);
        if (!is_dir($this->channelsdir) ||
              !file_exists($this->channelsdir . $ds . 'pear.php.net.reg')) {
            $this->_initializeChannelDirs();
        }

if (!file_exists($channelDir)) {
            if (!$this->hasWriteAccess()) {
                return false;
            }

require_once 'System.php';
            if (!System::mkdir(array('-p', $channelDir))) {
                return $this->raiseError("could not create directory '" . $channelDir .
                    "'");
            }
        } elseif (!is_dir($channelDir)) {
            return $this->raiseError("could not create directory '" . $channelDir .
                "', already exists and is not a directory");
        }

return true;
    }

/**
     * Make sure the directory where we keep registry files for channels exists
     *
     * @return bool TRUE if directory exists, FALSE if it could not be
     * created
     *
     * @access private
     */
    function _assertChannelDir()
    {
        if (!file_exists($this->channelsdir)) {
            if (!$this->hasWriteAccess()) {
                return false;
            }

require_once 'System.php';
            if (!System::mkdir(array('-p', $this->channelsdir))) {
                return $this->raiseError("could not create directory '{$this->channelsdir}'");
            }
        } elseif (!is_dir($this->channelsdir)) {
            return $this->raiseError("could not create directory '{$this->channelsdir}" .
                "', it already exists and is not a directory");
        }

if (!file_exists($this->channelsdir . DIRECTORY_SEPARATOR . '.alias')) {
            if (!$this->hasWriteAccess()) {
                return false;
            }

require_once 'System.php';
            if (!System::mkdir(array('-p', $this->channelsdir . DIRECTORY_SEPARATOR . '.alias'))) {
                return $this->raiseError("could not create directory '{$this->channelsdir}/.alias'");
            }
        } elseif (!is_dir($this->channelsdir . DIRECTORY_SEPARATOR . '.alias')) {
            return $this->raiseError("could not create directory '{$this->channelsdir}" .
                "/.alias', it already exists and is not a directory");
        }

return true;
    }

/**
     * Get the name of the file where data for a given package is stored.
     *
     * @param string channel name, or false if this is a PEAR package
     * @param string package name
     *
     * @return string registry file name
     *
     * @access public
     */
    function _packageFileName($package, $channel = false)
    {
        if ($channel && $this->_getChannelFromAlias($channel) != 'pear.php.net') {
            return $this->_channelDirectoryName($channel) . DIRECTORY_SEPARATOR .
                strtolower($package) . '.reg';
        }

return $this->statedir . DIRECTORY_SEPARATOR . strtolower($package) . '.reg';
    }

/**
     * Get the name of the file where data for a given channel is stored.
     * @param string channel name
     * @return string registry file name
     */
    function _channelFileName($channel, $noaliases = false)
    {
        if (!$noaliases) {
            if (file_exists($this->_getChannelAliasFileName($channel))) {
                $channel = implode('', file($this->_getChannelAliasFileName($channel)));
            }
        }
        return $this->channelsdir . DIRECTORY_SEPARATOR . str_replace('/', '_',
            strtolower($channel)) . '.reg';
    }

/**
     * @param string
     * @return string
     */
    function _getChannelAliasFileName($alias)
    {
        return $this->channelsdir . DIRECTORY_SEPARATOR . '.alias' .
              DIRECTORY_SEPARATOR . str_replace('/', '_', strtolower($alias)) . '.txt';
    }

/**
     * Get the name of a channel from its alias
     */
    function _getChannelFromAlias($channel)
    {
        if (!$this->_channelExists($channel)) {
            if ($channel == 'pear.php.net') {
                return 'pear.php.net';
            }

if ($channel == 'pecl.php.net') {
                return 'pecl.php.net';
            }

if ($channel == 'doc.php.net') {
                return 'doc.php.net';
            }

if ($channel == '__uri') {
                return '__uri';
            }

return false;
        }

$channel = strtolower($channel);
        if (file_exists($this->_getChannelAliasFileName($channel))) {
            // translate an alias to an actual channel
            return implode('', file($this->_getChannelAliasFileName($channel)));
        }

return $channel;
    }

/**
     * Get the alias of a channel from its alias or its name
     */
    function _getAlias($channel)
    {
        if (!$this->_channelExists($channel)) {
            if ($channel == 'pear.php.net') {
                return 'pear';
            }

if ($channel == 'pecl.php.net') {
                return 'pecl';
            }

if ($channel == 'doc.php.net') {
                return 'phpdocs';
            }

return false;
        }

$channel = $this->_getChannel($channel);
        if (PEAR::isError($channel)) {
            return $channel;
        }

return $channel->getAlias();
    }

/**
     * Get the name of the file where data for a given package is stored.
     *
     * @param string channel name, or false if this is a PEAR package
     * @param string package name
     *
     * @return string registry file name
     *
     * @access public
     */
    function _channelDirectoryName($channel)
    {
        if (!$channel || $this->_getChannelFromAlias($channel) == 'pear.php.net') {
            return $this->statedir;
        }

$ch = $this->_getChannelFromAlias($channel);
        if (!$ch) {
            $ch = $channel;
        }

return $this->statedir . DIRECTORY_SEPARATOR . strtolower('.channel.' .
            str_replace('/', '_', $ch));
    }

function _openPackageFile($package, $mode, $channel = false)
    {
        if (!$this->_assertStateDir($channel)) {
            return null;
        }

if (!in_array($mode, array('r', 'rb')) && !$this->hasWriteAccess()) {
            return null;
        }

$file = $this->_packageFileName($package, $channel);
        if (!file_exists($file) && $mode == 'r' || $mode == 'rb') {
            return null;
        }

$fp = @fopen($file, $mode);
        if (!$fp) {
            return null;
        }

return $fp;
    }

function _closePackageFile($fp)
    {
        fclose($fp);
    }

function _openChannelFile($channel, $mode)
    {
        if (!$this->_assertChannelDir()) {
            return null;
        }

if (!in_array($mode, array('r', 'rb')) && !$this->hasWriteAccess()) {
            return null;
        }

$file = $this->_channelFileName($channel);
        if (!file_exists($file) && $mode == 'r' || $mode == 'rb') {
            return null;
        }

$fp = @fopen($file, $mode);
        if (!$fp) {
            return null;
        }

return $fp;
    }

function _closeChannelFile($fp)
    {
        fclose($fp);
    }

function _rebuildFileMap()
    {
        if (!class_exists('PEAR_Installer_Role')) {
            require_once 'PEAR/Installer/Role.php';
        }

$channels = $this->_listAllPackages();
        $files = array();
        foreach ($channels as $channel => $packages) {
            foreach ($packages as $package) {
                $version = $this->_packageInfo($package, 'version', $channel);
                $filelist = $this->_packageInfo($package, 'filelist', $channel);
                if (!is_array($filelist)) {
                    continue;
                }

foreach ($filelist as $name => $attrs) {
                    if (isset($attrs['attribs'])) {
                        $attrs = $attrs['attribs'];
                    }

// it is possible for conflicting packages in different channels to
                    // conflict with data files/doc files
                    if ($name == 'dirtree') {
                        continue;
                    }

if (isset($attrs['role']) && !in_array($attrs['role'],
                          PEAR_Installer_Role::getInstallableRoles())) {
                        // these are not installed
                        continue;
                    }

if (isset($attrs['role']) && !in_array($attrs['role'],
                          PEAR_Installer_Role::getBaseinstallRoles())) {
                        $attrs['baseinstalldir'] = $package;
                    }

if (isset($attrs['baseinstalldir'])) {
                        $file = $attrs['baseinstalldir'].DIRECTORY_SEPARATOR.$name;
                    } else {
                        $file = $name;
                    }

$file = preg_replace(',^/+,', '', $file);
                    if ($channel != 'pear.php.net') {
                        if (!isset($files[$attrs['role']])) {
                            $files[$attrs['role']] = array();
                        }
                        $files[$attrs['role']][$file] = array(strtolower($channel),
                            strtolower($package));
                    } else {
                        if (!isset($files[$attrs['role']])) {
                            $files[$attrs['role']] = array();
                        }
                        $files[$attrs['role']][$file] = strtolower($package);
                    }
                }
            }
        }

$this->_assertStateDir();
        if (!$this->hasWriteAccess()) {
            return false;
        }

$fp = @fopen($this->filemap, 'wb');
        if (!$fp) {
            return false;
        }

$this->filemap_cache = $files;
        fwrite($fp, serialize($files));
        fclose($fp);
        return true;
    }

function _readFileMap()
    {
        if (!file_exists($this->filemap)) {
            return array();
        }

$fp = @fopen($this->filemap, 'r');
        if (!$fp) {
            $last_errormsg = '';
            $last_error = error_get_last();
            if (!empty($last_error['message'])) {
                $last_errormsg = $last_error['message'];
            }
            return $this->raiseError('PEAR_Registry: could not open filemap "' . $this->filemap . '"', PEAR_REGISTRY_ERROR_FILE, null, null, $last_errormsg);
        }

clearstatcache();
        $fsize = filesize($this->filemap);
        fclose($fp);
        $data = file_get_contents($this->filemap);
        $tmp = unserialize($data);
        if (!$tmp && $fsize > 7) {
            return $this->raiseError('PEAR_Registry: invalid filemap data', PEAR_REGISTRY_ERROR_FORMAT, null, null, $data);
        }

$this->filemap_cache = $tmp;
        return true;
    }

/**
     * Lock the registry.
     *
     * @param integer lock mode, one of LOCK_EX, LOCK_SH or LOCK_UN.
     *                See flock manual for more information.
     *
     * @return bool TRUE on success, FALSE if locking failed, or a
     *              PEAR error if some other error occurs (such as the
     *              lock file not being writable).
     *
     * @access private
     */
    function _lock($mode = LOCK_EX)
    {
        if (stristr(php_uname(), 'Windows 9')) {
            return true;
        }

if ($mode != LOCK_UN && is_resource($this->lock_fp)) {
            // XXX does not check type of lock (LOCK_SH/LOCK_EX)
            return true;
        }

if (!$this->_assertStateDir()) {
            if ($mode == LOCK_EX) {
                return $this->raiseError('Registry directory is not writeable by the current user');
            }

return true;
        }

$open_mode = 'w';
        // XXX People reported problems with LOCK_SH and 'w'
        if ($mode === LOCK_SH || $mode === LOCK_UN) {
            if (!file_exists($this->lockfile)) {
                touch($this->lockfile);
            }
            $open_mode = 'r';
        }

if (!is_resource($this->lock_fp)) {
            $this->lock_fp = @fopen($this->lockfile, $open_mode);
        }

if (!is_resource($this->lock_fp)) {
            $this->lock_fp = null;
            return $this->raiseError("could not create lock file" .
                                     (isset($php_errormsg) ? ": " . $php_errormsg : ""));
        }

if (!(int)flock($this->lock_fp, $mode)) {
            switch ($mode) {
                case LOCK_SH: $str = 'shared';    break;
                case LOCK_EX: $str = 'exclusive'; break;
                case LOCK_UN: $str = 'unlock';    break;
                default:      $str = 'unknown';   break;
            }

//is resource at this point, close it on error.
            fclose($this->lock_fp);
            $this->lock_fp = null;
            return $this->raiseError("could not acquire $str lock ($this->lockfile)",
                                     PEAR_REGISTRY_ERROR_LOCK);
        }

return true;
    }

function _unlock()
    {
        $ret = $this->_lock(LOCK_UN);
        if (is_resource($this->lock_fp)) {
            fclose($this->lock_fp);
        }

$this->lock_fp = null;
        return $ret;
    }

function _packageExists($package, $channel = false)
    {
        return file_exists($this->_packageFileName($package, $channel));
    }

/**
     * Determine whether a channel exists in the registry
     *
     * @param string Channel name
     * @param bool if true, then aliases will be ignored
     * @return boolean
     */
    function _channelExists($channel, $noaliases = false)
    {
        $a = file_exists($this->_channelFileName($channel, $noaliases));
        if (!$a && $channel == 'pear.php.net') {
            return true;
        }

if (!$a && $channel == 'pecl.php.net') {
            return true;
        }

if (!$a && $channel == 'doc.php.net') {
            return true;
        }

return $a;
    }

/**
     * Determine whether a mirror exists within the default channel in the registry
     *
     * @param string Channel name
     * @param string Mirror name
     *
     * @return boolean
     */
    function _mirrorExists($channel, $mirror)
    {
        $data = $this->_channelInfo($channel);
        if (!isset($data['servers']['mirror'])) {
            return false;
        }

foreach ($data['servers']['mirror'] as $m) {
            if ($m['attribs']['host'] == $mirror) {
                return true;
            }
        }

return false;
    }

/**
     * @param PEAR_ChannelFile Channel object
     * @param donotuse
     * @param string Last-Modified HTTP tag from remote request
     * @return boolean|PEAR_Error True on creation, false if it already exists
     */
    function _addChannel($channel, $update = false, $lastmodified = false)
    {
        if (!is_a($channel, 'PEAR_ChannelFile')) {
            return false;
        }

if (!$channel->validate()) {
            return false;
        }

if (file_exists($this->_channelFileName($channel->getName()))) {
            if (!$update) {
                return false;
            }

$checker = $this->_getChannel($channel->getName());
            if (PEAR::isError($checker)) {
                return $checker;
            }

if ($channel->getAlias() != $checker->getAlias()) {
                if (file_exists($this->_getChannelAliasFileName($checker->getAlias()))) {
                    @unlink($this->_getChannelAliasFileName($checker->getAlias()));
                }
            }
        } else {
            if ($update && !in_array($channel->getName(), array('pear.php.net', 'pecl.php.net', 'doc.php.net'))) {
                return false;
            }
        }

$ret = $this->_assertChannelDir();
        if (PEAR::isError($ret)) {
            return $ret;
        }

$ret = $this->_assertChannelStateDir($channel->getName());
        if (PEAR::isError($ret)) {
            return $ret;
        }

if ($channel->getAlias() != $channel->getName()) {
            if (file_exists($this->_getChannelAliasFileName($channel->getAlias())) &&
                  $this->_getChannelFromAlias($channel->getAlias()) != $channel->getName()) {
                $channel->setAlias($channel->getName());
            }

if (!$this->hasWriteAccess()) {
                return false;
            }

$fp = @fopen($this->_getChannelAliasFileName($channel->getAlias()), 'w');
            if (!$fp) {
                return false;
            }

fwrite($fp, $channel->getName());
            fclose($fp);
        }

if (!$this->hasWriteAccess()) {
            return false;
        }

$fp = @fopen($this->_channelFileName($channel->getName()), 'wb');
        if (!$fp) {
            return false;
        }

$info = $channel->toArray();
        if ($lastmodified) {
            $info['_lastmodified'] = $lastmodified;
        } else {
            $info['_lastmodified'] = self::getSourceDateEpoch();
        }

fwrite($fp, serialize($info));
        fclose($fp);
        return true;
    }

/**
     * Deletion fails if there are any packages installed from the channel
     * @param string|PEAR_ChannelFile channel name
     * @return boolean|PEAR_Error True on deletion, false if it doesn't exist
     */
    function _deleteChannel($channel)
    {
        if (!is_string($channel)) {
            if (!is_a($channel, 'PEAR_ChannelFile')) {
                return false;
            }

if (!$channel->validate()) {
                return false;
            }
            $channel = $channel->getName();
        }

if ($this->_getChannelFromAlias($channel) == '__uri') {
            return false;
        }

if ($this->_getChannelFromAlias($channel) == 'pecl.php.net') {
            return false;
        }

if ($this->_getChannelFromAlias($channel) == 'doc.php.net') {
            return false;
        }

if (!$this->_channelExists($channel)) {
            return false;
        }

if (!$channel || $this->_getChannelFromAlias($channel) == 'pear.php.net') {
            return false;
        }

$channel = $this->_getChannelFromAlias($channel);
        if ($channel == 'pear.php.net') {
            return false;
        }

$test = $this->_listChannelPackages($channel);
        if (count($test)) {
            return false;
        }

$test = @rmdir($this->_channelDirectoryName($channel));
        if (!$test) {
            return false;
        }

$file = $this->_getChannelAliasFileName($this->_getAlias($channel));
        if (file_exists($file)) {
            $test = @unlink($file);
            if (!$test) {
                return false;
            }
        }

$file = $this->_channelFileName($channel);
        $ret = true;
        if (file_exists($file)) {
            $ret = @unlink($file);
        }

return $ret;
    }

/**
     * Determine whether a channel exists in the registry
     * @param string Channel Alias
     * @return boolean
     */
    function _isChannelAlias($alias)
    {
        return file_exists($this->_getChannelAliasFileName($alias));
    }

/**
     * @param string|null
     * @param string|null
     * @param string|null
     * @return array|null
     * @access private
     */
    function _packageInfo($package = null, $key = null, $channel = 'pear.php.net')
    {
        if ($package === null) {
            if ($channel === null) {
                $channels = $this->_listChannels();
                $ret = array();
                foreach ($channels as $channel) {
                    $channel = strtolower($channel);
                    $ret[$channel] = array();
                    $packages = $this->_listPackages($channel);
                    foreach ($packages as $package) {
                        $ret[$channel][] = $this->_packageInfo($package, null, $channel);
                    }
                }

return $ret;
            }

$ps = $this->_listPackages($channel);
            if (!count($ps)) {
                return array();
            }
            return array_map(array(&$this, '_packageInfo'),
                             $ps, array_fill(0, count($ps), null),
                             array_fill(0, count($ps), $channel));
        }

$fp = $this->_openPackageFile($package, 'r', $channel);
        if ($fp === null) {
            return null;
        }

clearstatcache();
        $this->_closePackageFile($fp);
        $data = file_get_contents($this->_packageFileName($package, $channel));
        $data = @unserialize($data);
        if ($key === null) {
            return $data;
        }

// compatibility for package.xml version 2.0
        if (isset($data['old'][$key])) {
            return $data['old'][$key];
        }

if (isset($data[$key])) {
            return $data[$key];
        }

return null;
    }

/**
     * @param string Channel name
     * @param bool whether to strictly retrieve info of channels, not just aliases
     * @return array|null
     */
    function _channelInfo($channel, $noaliases = false)
    {
        if (!$this->_channelExists($channel, $noaliases)) {
            return null;
        }

$fp = $this->_openChannelFile($channel, 'r');
        if ($fp === null) {
            return null;
        }

clearstatcache();
        $this->_closeChannelFile($fp);
        $data = file_get_contents($this->_channelFileName($channel));
        $data = unserialize($data);
        return $data;
    }

function _listChannels()
    {
        $channellist = array();
        if (!file_exists($this->channelsdir) || !is_dir($this->channelsdir)) {
            return array('pear.php.net', 'pecl.php.net', 'doc.php.net', '__uri');
        }

$dp = opendir($this->channelsdir);
        while ($ent = readdir($dp)) {
            if ($ent[0] == '.' || substr($ent, -4) != '.reg') {
                continue;
            }

if ($ent == '__uri.reg') {
                $channellist[] = '__uri';
                continue;
            }

$channellist[] = str_replace('_', '/', substr($ent, 0, -4));
        }

closedir($dp);
        if (!in_array('pear.php.net', $channellist)) {
            $channellist[] = 'pear.php.net';
        }

if (!in_array('pecl.php.net', $channellist)) {
            $channellist[] = 'pecl.php.net';
        }

if (!in_array('doc.php.net', $channellist)) {
            $channellist[] = 'doc.php.net';
        }

if (!in_array('__uri', $channellist)) {
            $channellist[] = '__uri';
        }

natsort($channellist);
        return $channellist;
    }

function _listPackages($channel = false)
    {
        if ($channel && $this->_getChannelFromAlias($channel) != 'pear.php.net') {
            return $this->_listChannelPackages($channel);
        }

if (!file_exists($this->statedir) || !is_dir($this->statedir)) {
            return array();
        }

$pkglist = array();
        $dp = opendir($this->statedir);
        if (!$dp) {
            return $pkglist;
        }

while ($ent = readdir($dp)) {
            if ($ent[0] == '.' || substr($ent, -4) != '.reg') {
                continue;
            }

$pkglist[] = substr($ent, 0, -4);
        }
        closedir($dp);
        sort($pkglist);
        return $pkglist;
    }

function _listChannelPackages($channel)
    {
        $pkglist = array();
        if (!file_exists($this->_channelDirectoryName($channel)) ||
              !is_dir($this->_channelDirectoryName($channel))) {
            return array();
        }

$dp = opendir($this->_channelDirectoryName($channel));
        if (!$dp) {
            return $pkglist;
        }

while ($ent = readdir($dp)) {
            if ($ent[0] == '.' || substr($ent, -4) != '.reg') {
                continue;
            }
            $pkglist[] = substr($ent, 0, -4);
        }

closedir($dp);
        return $pkglist;
    }

function _listAllPackages()
    {
        $ret = array();
        foreach ($this->_listChannels() as $channel) {
            $ret[$channel] = $this->_listPackages($channel);
        }

return $ret;
    }

/**
     * Add an installed package to the registry
     * @param string package name
     * @param array package info (parsed by PEAR_Common::infoFrom*() methods)
     * @return bool success of saving
     * @access private
     */
    function _addPackage($package, $info)
    {
        if ($this->_packageExists($package)) {
            return false;
        }

$fp = $this->_openPackageFile($package, 'wb');
        if ($fp === null) {
            return false;
        }

$info['_lastmodified'] = self::getSourceDateEpoch();
        fwrite($fp, serialize($info));
        $this->_closePackageFile($fp);
        if (isset($info['filelist'])) {
            $this->_rebuildFileMap();
        }

return true;
    }

/**
     * @param PEAR_PackageFile_v1|PEAR_PackageFile_v2
     * @return bool
     * @access private
     */
    function _addPackage2($info)
    {
        if (!is_a($info, 'PEAR_PackageFile_v1') && !is_a($info, 'PEAR_PackageFile_v2')) {
            return false;
        }

if (!$info->validate()) {
            if (class_exists('PEAR_Common')) {
                $ui = PEAR_Frontend::singleton();
                if ($ui) {
                    foreach ($info->getValidationWarnings() as $err) {
                        $ui->log($err['message'], true);
                    }
                }
            }
            return false;
        }

$channel = $info->getChannel();
        $package = $info->getPackage();
        $save = $info;
        if ($this->_packageExists($package, $channel)) {
            return false;
        }

if (!$this->_channelExists($channel, true)) {
            return false;
        }

$info = $info->toArray(true);
        if (!$info) {
            return false;
        }

$fp = $this->_openPackageFile($package, 'wb', $channel);
        if ($fp === null) {
            return false;
        }

$info['_lastmodified'] = self::getSourceDateEpoch();
        fwrite($fp, serialize($info));
        $this->_closePackageFile($fp);
        $this->_rebuildFileMap();
        return true;
    }

/**
     * @param string Package name
     * @param array parsed package.xml 1.0
     * @param bool this parameter is only here for BC.  Don't use it.
     * @access private
     */
    function _updatePackage($package, $info, $merge = true)
    {
        $oldinfo = $this->_packageInfo($package);
        if (empty($oldinfo)) {
            return false;
        }

$fp = $this->_openPackageFile($package, 'w');
        if ($fp === null) {
            return false;
        }

if (is_object($info)) {
            $info = $info->toArray();
        }
        $info['_lastmodified'] = self::getSourceDateEpoch();

$newinfo = $info;
        if ($merge) {
            $info = array_merge($oldinfo, $info);
        } else {
            $diff = $info;
        }

fwrite($fp, serialize($info));
        $this->_closePackageFile($fp);
        if (isset($newinfo['filelist'])) {
            $this->_rebuildFileMap();
        }

return true;
    }

/**
     * @param PEAR_PackageFile_v1|PEAR_PackageFile_v2
     * @return bool
     * @access private
     */
    function _updatePackage2($info)
    {
        if (!$this->_packageExists($info->getPackage(), $info->getChannel())) {
            return false;
        }

$fp = $this->_openPackageFile($info->getPackage(), 'w', $info->getChannel());
        if ($fp === null) {
            return false;
        }

$save = $info;
        $info = $save->getArray(true);
        $info['_lastmodified'] = self::getSourceDateEpoch();
        fwrite($fp, serialize($info));
        $this->_closePackageFile($fp);
        $this->_rebuildFileMap();
        return true;
    }

/**
     * @param string Package name
     * @param string Channel name
     * @return PEAR_PackageFile_v1|PEAR_PackageFile_v2|null
     * @access private
     */
    function &_getPackage($package, $channel = 'pear.php.net')
    {
        $info = $this->_packageInfo($package, null, $channel);
        if ($info === null) {
            return $info;
        }

$a = $this->_config;
        if (!$a) {
            $this->_config = new PEAR_Config;
            $this->_config->set('php_dir', $this->statedir);
        }

if (!class_exists('PEAR_PackageFile')) {
            require_once 'PEAR/PackageFile.php';
        }

$pkg = new PEAR_PackageFile($this->_config);
        $pf = &$pkg->fromArray($info);
        return $pf;
    }

/**
     * @param string channel name
     * @param bool whether to strictly retrieve channel names
     * @return PEAR_ChannelFile|PEAR_Error
     * @access private
     */
    function &_getChannel($channel, $noaliases = false)
    {
        $ch = false;
        if ($this->_channelExists($channel, $noaliases)) {
            $chinfo = $this->_channelInfo($channel, $noaliases);
            if ($chinfo) {
                if (!class_exists('PEAR_ChannelFile')) {
                    require_once 'PEAR/ChannelFile.php';
                }

$ch = &PEAR_ChannelFile::fromArrayWithErrors($chinfo);
            }
        }

if ($ch) {
            if ($ch->validate()) {
                return $ch;
            }

foreach ($ch->getErrors(true) as $err) {
                $message = $err['message'] . "\n";
            }

$ch = PEAR::raiseError($message);
            return $ch;
        }

if ($this->_getChannelFromAlias($channel) == 'pear.php.net') {
            // the registry is not properly set up, so use defaults
            if (!class_exists('PEAR_ChannelFile')) {
                require_once 'PEAR/ChannelFile.php';
            }

$pear_channel = new PEAR_ChannelFile;
            $pear_channel->setServer('pear.php.net');
            $pear_channel->setAlias('pear');
            $pear_channel->setSummary('PHP Extension and Application Repository');
            $pear_channel->setDefaultPEARProtocols();
            $pear_channel->setBaseURL('REST1.0', 'http://pear.php.net/rest/');
            $pear_channel->setBaseURL('REST1.1', 'http://pear.php.net/rest/');
            $pear_channel->setBaseURL('REST1.3', 'http://pear.php.net/rest/');
            return $pear_channel;
        }

if ($this->_getChannelFromAlias($channel) == 'pecl.php.net') {
            // the registry is not properly set up, so use defaults
            if (!class_exists('PEAR_ChannelFile')) {
                require_once 'PEAR/ChannelFile.php';
            }
            $pear_channel = new PEAR_ChannelFile;
            $pear_channel->setServer('pecl.php.net');
            $pear_channel->setAlias('pecl');
            $pear_channel->setSummary('PHP Extension Community Library');
            $pear_channel->setDefaultPEARProtocols();
            $pear_channel->setBaseURL('REST1.0', 'http://pecl.php.net/rest/');
            $pear_channel->setBaseURL('REST1.1', 'http://pecl.php.net/rest/');
            $pear_channel->setValidationPackage('PEAR_Validator_PECL', '1.0');
            return $pear_channel;
        }

if ($this->_getChannelFromAlias($channel) == 'doc.php.net') {
            // the registry is not properly set up, so use defaults
            if (!class_exists('PEAR_ChannelFile')) {
                require_once 'PEAR/ChannelFile.php';
            }

$doc_channel = new PEAR_ChannelFile;
            $doc_channel->setServer('doc.php.net');
            $doc_channel->setAlias('phpdocs');
            $doc_channel->setSummary('PHP Documentation Team');
            $doc_channel->setDefaultPEARProtocols();
            $doc_channel->setBaseURL('REST1.0', 'http://doc.php.net/rest/');
            $doc_channel->setBaseURL('REST1.1', 'http://doc.php.net/rest/');
            $doc_channel->setBaseURL('REST1.3', 'http://doc.php.net/rest/');
            return $doc_channel;
        }

if ($this->_getChannelFromAlias($channel) == '__uri') {
            // the registry is not properly set up, so use defaults
            if (!class_exists('PEAR_ChannelFile')) {
                require_once 'PEAR/ChannelFile.php';
            }

$private = new PEAR_ChannelFile;
            $private->setName('__uri');
            $private->setDefaultPEARProtocols();
            $private->setBaseURL('REST1.0', '****');
            $private->setSummary('Pseudo-channel for static packages');
            return $private;
        }

return $ch;
    }

/**
     * @param string Package name
     * @param string Channel name
     * @return bool
     */
    function packageExists($package, $channel = 'pear.php.net')
    {
        if (PEAR::isError($e = $this->_lock(LOCK_SH))) {
            return $e;
        }
        $ret = $this->_packageExists($package, $channel);
        $this->_unlock();
        return $ret;
    }

// }}}

// {{{ channelExists()

/**
     * @param string channel name
     * @param bool if true, then aliases will be ignored
     * @return bool
     */
    function channelExists($channel, $noaliases = false)
    {
        if (PEAR::isError($e = $this->_lock(LOCK_SH))) {
            return $e;
        }
        $ret = $this->_channelExists($channel, $noaliases);
        $this->_unlock();
        return $ret;
    }

// }}}

/**
     * @param string channel name mirror is in
     * @param string mirror name
     *
     * @return bool
     */
    function mirrorExists($channel, $mirror)
    {
        if (PEAR::isError($e = $this->_lock(LOCK_SH))) {
            return $e;
        }

$ret = $this->_mirrorExists($channel, $mirror);
        $this->_unlock();
        return $ret;
    }

// {{{ isAlias()

/**
     * Determines whether the parameter is an alias of a channel
     * @param string
     * @return bool
     */
    function isAlias($alias)
    {
        if (PEAR::isError($e = $this->_lock(LOCK_SH))) {
            return $e;
        }
        $ret = $this->_isChannelAlias($alias);
        $this->_unlock();
        return $ret;
    }

// }}}
    // {{{ packageInfo()

/**
     * @param string|null
     * @param string|null
     * @param string
     * @return array|null
     */
    function packageInfo($package = null, $key = null, $channel = 'pear.php.net')
    {
        if (PEAR::isError($e = $this->_lock(LOCK_SH))) {
            return $e;
        }
        $ret = $this->_packageInfo($package, $key, $channel);
        $this->_unlock();
        return $ret;
    }

// }}}
    // {{{ channelInfo()

/**
     * Retrieve a raw array of channel data.
     *
     * Do not use this, instead use {@link getChannel()} for normal
     * operations.  Array structure is undefined in this method
     * @param string channel name
     * @param bool whether to strictly retrieve information only on non-aliases
     * @return array|null|PEAR_Error
     */
    function channelInfo($channel = null, $noaliases = false)
    {
        if (PEAR::isError($e = $this->_lock(LOCK_SH))) {
            return $e;
        }
        $ret = $this->_channelInfo($channel, $noaliases);
        $this->_unlock();
        return $ret;
    }

// }}}

/**
     * @param string
     */
    function channelName($channel)
    {
        if (PEAR::isError($e = $this->_lock(LOCK_SH))) {
            return $e;
        }
        $ret = $this->_getChannelFromAlias($channel);
        $this->_unlock();
        return $ret;
    }

/**
     * @param string
     */
    function channelAlias($channel)
    {
        if (PEAR::isError($e = $this->_lock(LOCK_SH))) {
            return $e;
        }
        $ret = $this->_getAlias($channel);
        $this->_unlock();
        return $ret;
    }
    // {{{ listPackages()

function listPackages($channel = false)
    {
        if (PEAR::isError($e = $this->_lock(LOCK_SH))) {
            return $e;
        }
        $ret = $this->_listPackages($channel);
        $this->_unlock();
        return $ret;
    }

// }}}
    // {{{ listAllPackages()

function listAllPackages()
    {
        if (PEAR::isError($e = $this->_lock(LOCK_SH))) {
            return $e;
        }
        $ret = $this->_listAllPackages();
        $this->_unlock();
        return $ret;
    }

// }}}
    // {{{ listChannel()

function listChannels()
    {
        if (PEAR::isError($e = $this->_lock(LOCK_SH))) {
            return $e;
        }
        $ret = $this->_listChannels();
        $this->_unlock();
        return $ret;
    }

// }}}
    // {{{ addPackage()

/**
     * Add an installed package to the registry
     * @param string|PEAR_PackageFile_v1|PEAR_PackageFile_v2 package name or object
     *               that will be passed to {@link addPackage2()}
     * @param array package info (parsed by PEAR_Common::infoFrom*() methods)
     * @return bool success of saving
     */
    function addPackage($package, $info)
    {
        if (is_object($info)) {
            return $this->addPackage2($info);
        }
        if (PEAR::isError($e = $this->_lock(LOCK_EX))) {
            return $e;
        }
        $ret = $this->_addPackage($package, $info);
        $this->_unlock();
        if ($ret) {
            if (!class_exists('PEAR_PackageFile_v1')) {
                require_once 'PEAR/PackageFile/v1.php';
            }
            $pf = new PEAR_PackageFile_v1;
            $pf->setConfig($this->_config);
            $pf->fromArray($info);
            $this->_dependencyDB->uninstallPackage($pf);
            $this->_dependencyDB->installPackage($pf);
        }
        return $ret;
    }

// }}}
    // {{{ addPackage2()

// }}}
    // {{{ updateChannel()

/**
     * For future expandibility purposes, separate this
     * @param PEAR_ChannelFile
     */
    function updateChannel($channel, $lastmodified = null)
    {
        if ($channel->getName() == '__uri') {
            return false;
        }
        return $this->addChannel($channel, $lastmodified, true);
    }

// }}}
    // {{{ deleteChannel()

/**
     * Deletion fails if there are any packages installed from the channel
     * @param string|PEAR_ChannelFile channel name
     * @return boolean|PEAR_Error True on deletion, false if it doesn't exist
     */
    function deleteChannel($channel)
    {
        if (PEAR::isError($e = $this->_lock(LOCK_EX))) {
            return $e;
        }

$ret = $this->_deleteChannel($channel);
        $this->_unlock();
        if ($ret && is_a($this->_config, 'PEAR_Config')) {
            $this->_config->setChannels($this->listChannels());
        }

return $ret;
    }

// }}}
    // {{{ addChannel()

/**
     * @param PEAR_ChannelFile Channel object
     * @param string Last-Modified header from HTTP for caching
     * @return boolean|PEAR_Error True on creation, false if it already exists
     */
    function addChannel($channel, $lastmodified = false, $update = false)
    {
        if (!is_a($channel, 'PEAR_ChannelFile') || !$channel->validate()) {
            return false;
        }

if (PEAR::isError($e = $this->_lock(LOCK_EX))) {
            return $e;
        }

$ret = $this->_addChannel($channel, $update, $lastmodified);
        $this->_unlock();
        if (!$update && $ret && is_a($this->_config, 'PEAR_Config')) {
            $this->_config->setChannels($this->listChannels());
        }

return $ret;
    }

// }}}
    // {{{ deletePackage()

function deletePackage($package, $channel = 'pear.php.net')
    {
        if (PEAR::isError($e = $this->_lock(LOCK_EX))) {
            return $e;
        }

$file = $this->_packageFileName($package, $channel);
        $ret  = file_exists($file) ? @unlink($file) : false;
        $this->_rebuildFileMap();
        $this->_unlock();
        $p = array('channel' => $channel, 'package' => $package);
        $this->_dependencyDB->uninstallPackage($p);
        return $ret;
    }

// }}}
    // {{{ updatePackage()

// }}}
    // {{{ updatePackage2()

function updatePackage2($info)
    {

if (!is_object($info)) {
            return $this->updatePackage($info['package'], $info, $merge);
        }

if (!$info->validate(PEAR_VALIDATE_DOWNLOADING)) {
            return false;
        }

if (PEAR::isError($e = $this->_lock(LOCK_EX))) {
            return $e;
        }

$ret = $this->_updatePackage2($info);
        $this->_unlock();
        if ($ret) {
            $this->_dependencyDB->uninstallPackage($info);
            $this->_dependencyDB->installPackage($info);
        }

return $ret;
    }

// }}}
    // {{{ getChannel()
    /**
     * @param string channel name
     * @param bool whether to strictly return raw channels (no aliases)
     * @return PEAR_ChannelFile|PEAR_Error
     */
    function getChannel($channel, $noaliases = false)
    {
        if (PEAR::isError($e = $this->_lock(LOCK_SH))) {
            return $e;
        }
        $ret = $this->_getChannel($channel, $noaliases);
        $this->_unlock();
        if (!$ret) {
            return PEAR::raiseError('Unknown channel: ' . $channel);
        }
        return $ret;
    }

// }}}
    // {{{ getPackage()
    /**
     * @param string package name
     * @param string channel name
     * @return PEAR_PackageFile_v1|PEAR_PackageFile_v2|null
     */
    function &getPackage($package, $channel = 'pear.php.net')
    {
        if (PEAR::isError($e = $this->_lock(LOCK_SH))) {
            return $e;
        }
        $pf = &$this->_getPackage($package, $channel);
        $this->_unlock();
        return $pf;
    }

// }}}

/**
     * Get PEAR_PackageFile_v[1/2] objects representing the contents of
     * a dependency group that are installed.
     *
     * This is used at uninstall-time
     * @param array
     * @return array|false
     */
    function getInstalledGroup($group)
    {
        $ret = array();
        if (isset($group['package'])) {
            if (!isset($group['package'][0])) {
                $group['package'] = array($group['package']);
            }
            foreach ($group['package'] as $package) {
                $depchannel = isset($package['channel']) ? $package['channel'] : '__uri';
                $p = &$this->getPackage($package['name'], $depchannel);
                if ($p) {
                    $save = &$p;
                    $ret[] = &$save;
                }
            }
        }
        if (isset($group['subpackage'])) {
            if (!isset($group['subpackage'][0])) {
                $group['subpackage'] = array($group['subpackage']);
            }
            foreach ($group['subpackage'] as $package) {
                $depchannel = isset($package['channel']) ? $package['channel'] : '__uri';
                $p = &$this->getPackage($package['name'], $depchannel);
                if ($p) {
                    $save = &$p;
                    $ret[] = &$save;
                }
            }
        }
        if (!count($ret)) {
            return false;
        }
        return $ret;
    }

// {{{ getChannelValidator()
    /**
     * @param string channel name
     * @return PEAR_Validate|false
     */
    function &getChannelValidator($channel)
    {
        $chan = $this->getChannel($channel);
        if (PEAR::isError($chan)) {
            return $chan;
        }
        $val = $chan->getValidationObject();
        return $val;
    }
    // }}}
    // {{{ getChannels()
    /**
     * @param string channel name
     * @return array an array of PEAR_ChannelFile objects representing every installed channel
     */
    function &getChannels()
    {
        $ret = array();
        if (PEAR::isError($e = $this->_lock(LOCK_SH))) {
            return $e;
        }
        foreach ($this->_listChannels() as $channel) {
            $e = &$this->_getChannel($channel);
            if (!$e || PEAR::isError($e)) {
                continue;
            }
            $ret[] = $e;
        }
        $this->_unlock();
        return $ret;
    }

// }}}
    // {{{ checkFileMap()

/**
     * Test whether a file or set of files belongs to a package.
     *
     * If an array is passed in
     * @param string|array file path, absolute or relative to the pear
     *                     install dir
     * @param string|array name of PEAR package or array('package' => name, 'channel' =>
     *                     channel) of a package that will be ignored
     * @param string API version - 1.1 will exclude any files belonging to a package
     * @param array private recursion variable
     * @return array|false which package and channel the file belongs to, or an empty
     *                     string if the file does not belong to an installed package,
     *                     or belongs to the second parameter's package
     */
    function checkFileMap($path, $package = false, $api = '1.0', $attrs = false)
    {
        if (is_array($path)) {
            static $notempty;
            if (empty($notempty)) {
                if (!class_exists('PEAR_Installer_Role')) {
                    require_once 'PEAR/Installer/Role.php';
                }
                $notempty = function($a) { return !empty($a); };
            }
            $package = is_array($package) ? array(strtolower($package[0]), strtolower($package[1]))
                : strtolower($package);
            $pkgs = array();
            foreach ($path as $name => $attrs) {
                if (is_array($attrs)) {
                    if (isset($attrs['install-as'])) {
                        $name = $attrs['install-as'];
                    }
                    if (!in_array($attrs['role'], PEAR_Installer_Role::getInstallableRoles())) {
                        // these are not installed
                        continue;
                    }
                    if (!in_array($attrs['role'], PEAR_Installer_Role::getBaseinstallRoles())) {
                        $attrs['baseinstalldir'] = is_array($package) ? $package[1] : $package;
                    }
                    if (isset($attrs['baseinstalldir'])) {
                        $name = $attrs['baseinstalldir'] . DIRECTORY_SEPARATOR . $name;
                    }
                }
                $pkgs[$name] = $this->checkFileMap($name, $package, $api, $attrs);
                if (PEAR::isError($pkgs[$name])) {
                    return $pkgs[$name];
                }
            }
            return array_filter($pkgs, $notempty);
        }
        if (empty($this->filemap_cache)) {
            if (PEAR::isError($e = $this->_lock(LOCK_SH))) {
                return $e;
            }
            $err = $this->_readFileMap();
            $this->_unlock();
            if (PEAR::isError($err)) {
                return $err;
            }
        }
        if (!$attrs) {
            $attrs = array('role' => 'php'); // any old call would be for PHP role only
        }
        if (isset($this->filemap_cache[$attrs['role']][$path])) {
            if ($api >= '1.1' && $this->filemap_cache[$attrs['role']][$path] == $package) {
                return false;
            }
            return $this->filemap_cache[$attrs['role']][$path];
        }
        $l = strlen($this->install_dir);
        if (substr($path, 0, $l) == $this->install_dir) {
            $path = preg_replace('!^'.DIRECTORY_SEPARATOR.'+!', '', substr($path, $l));
        }
        if (isset($this->filemap_cache[$attrs['role']][$path])) {
            if ($api >= '1.1' && $this->filemap_cache[$attrs['role']][$path] == $package) {
                return false;
            }
            return $this->filemap_cache[$attrs['role']][$path];
        }
        return false;
    }

// }}}
    // {{{ flush()
    /**
     * Force a reload of the filemap
     * @since 1.5.0RC3
     */
    function flushFileMap()
    {
        $this->filemap_cache = null;
        clearstatcache(); // ensure that the next read gets the full, current filemap
    }

// }}}
    // {{{ apiVersion()
    /**
     * Get the expected API version.  Channels API is version 1.1, as it is backwards
     * compatible with 1.0
     * @return string
     */
    function apiVersion()
    {
        return '1.1';
    }
    // }}}

/**
     * Parse a package name, or validate a parsed package name array
     * @param string|array pass in an array of format
     *                     array(
     *                      'package' => 'pname',
     *                     ['channel' => 'channame',]
     *                     ['version' => 'version',]
     *                     ['state' => 'state',]
     *                     ['group' => 'groupname'])
     *                     or a string of format
     *                     [channel://][channame/]pname[-version|-state][/group=groupname]
     * @return array|PEAR_Error
     */
    function parsePackageName($param, $defaultchannel = 'pear.php.net')
    {
        $saveparam = $param;
        if (is_array($param)) {
            // convert to string for error messages
            $saveparam = $this->parsedPackageNameToString($param);
            // process the array
            if (!isset($param['package'])) {
                return PEAR::raiseError('parsePackageName(): array $param ' .
                    'must contain a valid package name in index "param"',
                    'package', null, null, $param);
            }
            if (!isset($param['uri'])) {
                if (!isset($param['channel'])) {
                    $param['channel'] = $defaultchannel;
                }
            } else {
                $param['channel'] = '__uri';
            }
        } else {
            $components = @parse_url((string) $param);
            if (isset($components['scheme'])) {
                if ($components['scheme'] == 'http') {
                    // uri package
                    $param = array('uri' => $param, 'channel' => '__uri');
                } elseif($components['scheme'] != 'channel') {
                    return PEAR::raiseError('parsePackageName(): only channel:// uris may ' .
                        'be downloaded, not "' . $param . '"', 'invalid', null, null, $param);
                }
            }
            if (!isset($components['path'])) {
                return PEAR::raiseError('parsePackageName(): array $param ' .
                    'must contain a valid package name in "' . $param . '"',
                    'package', null, null, $param);
            }
            if (isset($components['host'])) {
                // remove the leading "/"
                $components['path'] = substr($components['path'], 1);
            }
            if (!isset($components['scheme'])) {
                if (strpos($components['path'], '/') !== false) {
                    if ($components['path'][0] == '/') {
                        return PEAR::raiseError('parsePackageName(): this is not ' .
                            'a package name, it begins with "/" in "' . $param . '"',
                            'invalid', null, null, $param);
                    }
                    $parts = explode('/', $components['path']);
                    $components['host'] = array_shift($parts);
                    if (count($parts) > 1) {
                        $components['path'] = array_pop($parts);
                        $components['host'] .= '/' . implode('/', $parts);
                    } else {
                        $components['path'] = implode('/', $parts);
                    }
                } else {
                    $components['host'] = $defaultchannel;
                }
            } else {
                if (strpos($components['path'], '/')) {
                    $parts = explode('/', $components['path']);
                    $components['path'] = array_pop($parts);
                    $components['host'] .= '/' . implode('/', $parts);
                }
            }

if (is_array($param)) {
                $param['package'] = $components['path'];
            } else {
                $param = array(
                    'package' => $components['path']
                    );
                if (isset($components['host'])) {
                    $param['channel'] = $components['host'];
                }
            }
            if (isset($components['fragment'])) {
                $param['group'] = $components['fragment'];
            }
            if (isset($components['user'])) {
                $param['user'] = $components['user'];
            }
            if (isset($components['pass'])) {
                $param['pass'] = $components['pass'];
            }
            if (isset($components['query'])) {
                parse_str($components['query'], $param['opts']);
            }
            // check for extension
            $pathinfo = pathinfo($param['package']);
            if (isset($pathinfo['extension']) &&
                  in_array(strtolower($pathinfo['extension']), array('tgz', 'tar'))) {
                $param['extension'] = $pathinfo['extension'];
                $param['package'] = substr($pathinfo['basename'], 0,
                    strlen($pathinfo['basename']) - 4);
            }
            // check for version
            if (strpos($param['package'], '-')) {
                $test = explode('-', $param['package']);
                if (count($test) != 2) {
                    return PEAR::raiseError('parsePackageName(): only one version/state ' .
                        'delimiter "-" is allowed in "' . $saveparam . '"',
                        'version', null, null, $param);
                }
                list($param['package'], $param['version']) = $test;
            }
        }
        // validation
        $info = $this->channelExists($param['channel']);
        if (PEAR::isError($info)) {
            return $info;
        }
        if (!$info) {
            return PEAR::raiseError('unknown channel "' . $param['channel'] .
                '" in "' . $saveparam . '"', 'channel', null, null, $param);
        }
        $chan = $this->getChannel($param['channel']);
        if (PEAR::isError($chan)) {
            return $chan;
        }
        if (!$chan) {
            return PEAR::raiseError("Exception: corrupt registry, could not " .
                "retrieve channel " . $param['channel'] . " information",
                'registry', null, null, $param);
        }
        $param['channel'] = $chan->getName();
        $validate = $chan->getValidationObject();
        $vpackage = $chan->getValidationPackage();
        // validate package name
        if (!$validate->validPackageName($param['package'], $vpackage['_content'])) {
            return PEAR::raiseError('parsePackageName(): invalid package name "' .
                $param['package'] . '" in "' . $saveparam . '"',
                'package', null, null, $param);
        }
        if (isset($param['group'])) {
            if (!PEAR_Validate::validGroupName($param['group'])) {
                return PEAR::raiseError('parsePackageName(): dependency group "' . $param['group'] .
                    '" is not a valid group name in "' . $saveparam . '"', 'group', null, null,
                    $param);
            }
        }
        if (isset($param['state'])) {
            if (!in_array(strtolower($param['state']), $validate->getValidStates())) {
                return PEAR::raiseError('parsePackageName(): state "' . $param['state']
                    . '" is not a valid state in "' . $saveparam . '"',
                    'state', null, null, $param);
            }
        }
        if (isset($param['version'])) {
            if (isset($param['state'])) {
                return PEAR::raiseError('parsePackageName(): cannot contain both ' .
                    'a version and a stability (state) in "' . $saveparam . '"',
                    'version/state', null, null, $param);
            }
            // check whether version is actually a state
            if (in_array(strtolower($param['version']), $validate->getValidStates())) {
                $param['state'] = strtolower($param['version']);
                unset($param['version']);
            } else {
                if (!$validate->validVersion($param['version'])) {
                    return PEAR::raiseError('parsePackageName(): "' . $param['version'] .
                        '" is neither a valid version nor a valid state in "' .
                        $saveparam . '"', 'version/state', null, null, $param);
                }
            }
        }
        return $param;
    }

/**
     * @param array
     * @return string
     */
    function parsedPackageNameToString($parsed, $brief = false)
    {
        if (is_string($parsed)) {
            return $parsed;
        }
        if (is_object($parsed)) {
            $p = $parsed;
            $parsed = array(
                'package' => $p->getPackage(),
                'channel' => $p->getChannel(),
                'version' => $p->getVersion(),
            );
        }
        if (isset($parsed['uri'])) {
            return $parsed['uri'];
        }
        if ($brief) {
            if ($channel = $this->channelAlias($parsed['channel'])) {
                return $channel . '/' . $parsed['package'];
            }
        }
        $upass = '';
        if (isset($parsed['user'])) {
            $upass = $parsed['user'];
            if (isset($parsed['pass'])) {
                $upass .= ':' . $parsed['pass'];
            }
            $upass = "$upass@";
        }
        $ret = 'channel://' . $upass . $parsed['channel'] . '/' . $parsed['package'];
        if (isset($parsed['version']) || isset($parsed['state'])) {
            $ver = isset($parsed['version']) ? $parsed['version'] : '';
            $ver .= isset($parsed['state']) ? $parsed['state'] : '';
            $ret .= '-' . $ver;
        }
        if (isset($parsed['extension'])) {
            $ret .= '.' . $parsed['extension'];
        }
        if (isset($parsed['opts'])) {
            $ret .= '?';
            foreach ($parsed['opts'] as $name => $value) {
                $parsed['opts'][$name] = "$name=$value";
            }
            $ret .= implode('&', $parsed['opts']);
        }
        if (isset($parsed['group'])) {
            $ret .= '#' . $parsed['group'];
        }
        return $ret;
    }
}

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