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Filename : Install.php
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<?php
/**
 * PEAR_Command_Install (install, upgrade, upgrade-all, uninstall, bundle, run-scripts commands)
 *
 * PHP versions 4 and 5
 *
 * @category   pear
 * @package    PEAR
 * @author     Stig Bakken <ssb@php.net>
 * @author     Greg Beaver <cellog@php.net>
 * @copyright  1997-2009 The Authors
 * @license    http://opensource.org/licenses/bsd-license.php New BSD License
 * @version    CVS: $Id$
 * @link       http://pear.php.net/package/PEAR
 * @since      File available since Release 0.1
 */

/**
 * base class
 */
require_once 'PEAR/Command/Common.php';

/**
 * PEAR commands for installation or deinstallation/upgrading of
 * packages.
 *
 * @category   pear
 * @package    PEAR
 * @author     Stig Bakken <ssb@php.net>
 * @author     Greg Beaver <cellog@php.net>
 * @copyright  1997-2009 The Authors
 * @license    http://opensource.org/licenses/bsd-license.php New BSD License
 * @version    Release: 1.9.5
 * @link       http://pear.php.net/package/PEAR
 * @since      Class available since Release 0.1
 */
class PEAR_Command_Install extends PEAR_Command_Common
{
    // {{{ properties

    var $commands = array(
        'install' => array(
            'summary' => 'Install Package',
            'function' => 'doInstall',
            'shortcut' => 'i',
            'options' => array(
                'force' => array(
                    'shortopt' => 'f',
                    'doc' => 'will overwrite newer installed packages',
                    ),
                'loose' => array(
                    'shortopt' => 'l',
                    'doc' => 'do not check for recommended dependency version',
                    ),
                'nodeps' => array(
                    'shortopt' => 'n',
                    'doc' => 'ignore dependencies, install anyway',
                    ),
                'register-only' => array(
                    'shortopt' => 'r',
                    'doc' => 'do not install files, only register the package as installed',
                    ),
                'soft' => array(
                    'shortopt' => 's',
                    'doc' => 'soft install, fail silently, or upgrade if already installed',
                    ),
                'nobuild' => array(
                    'shortopt' => 'B',
                    'doc' => 'don\'t build C extensions',
                    ),
                'nocompress' => array(
                    'shortopt' => 'Z',
                    'doc' => 'request uncompressed files when downloading',
                    ),
                'installroot' => array(
                    'shortopt' => 'R',
                    'arg' => 'DIR',
                    'doc' => 'root directory used when installing files (ala PHP\'s INSTALL_ROOT), use packagingroot for RPM',
                    ),
                'packagingroot' => array(
                    'shortopt' => 'P',
                    'arg' => 'DIR',
                    'doc' => 'root directory used when packaging files, like RPM packaging',
                    ),
                'ignore-errors' => array(
                    'doc' => 'force install even if there were errors',
                    ),
                'alldeps' => array(
                    'shortopt' => 'a',
                    'doc' => 'install all required and optional dependencies',
                    ),
                'onlyreqdeps' => array(
                    'shortopt' => 'o',
                    'doc' => 'install all required dependencies',
                    ),
                'offline' => array(
                    'shortopt' => 'O',
                    'doc' => 'do not attempt to download any urls or contact channels',
                    ),
                'pretend' => array(
                    'shortopt' => 'p',
                    'doc' => 'Only list the packages that would be downloaded',
                    ),
                ),
            'doc' => '[channel/]<package> ...
Installs one or more PEAR packages.  You can specify a package to
install in four ways:

"Package-1.0.tgz" : installs from a local file

"http://example.com/Package-1.0.tgz" : installs from
anywhere on the net.

"package.xml" : installs the package described in
package.xml.  Useful for testing, or for wrapping a PEAR package in
another package manager such as RPM.

"Package[-version/state][.tar]" : queries your default channel\'s server
({config master_server}) and downloads the newest package with
the preferred quality/state ({config preferred_state}).

To retrieve Package version 1.1, use "Package-1.1," to retrieve
Package state beta, use "Package-beta."  To retrieve an uncompressed
file, append .tar (make sure there is no file by the same name first)

To download a package from another channel, prefix with the channel name like
"channel/Package"

More than one package may be specified at once.  It is ok to mix these
four ways of specifying packages.
'),
        'upgrade' => array(
            'summary' => 'Upgrade Package',
            'function' => 'doInstall',
            'shortcut' => 'up',
            'options' => array(
                'channel' => array(
                    'shortopt' => 'c',
                    'doc' => 'upgrade packages from a specific channel',
                    'arg' => 'CHAN',
                    ),
                'force' => array(
                    'shortopt' => 'f',
                    'doc' => 'overwrite newer installed packages',
                    ),
                'loose' => array(
                    'shortopt' => 'l',
                    'doc' => 'do not check for recommended dependency version',
                    ),
                'nodeps' => array(
                    'shortopt' => 'n',
                    'doc' => 'ignore dependencies, upgrade anyway',
                    ),
                'register-only' => array(
                    'shortopt' => 'r',
                    'doc' => 'do not install files, only register the package as upgraded',
                    ),
                'nobuild' => array(
                    'shortopt' => 'B',
                    'doc' => 'don\'t build C extensions',
                    ),
                'nocompress' => array(
                    'shortopt' => 'Z',
                    'doc' => 'request uncompressed files when downloading',
                    ),
                'installroot' => array(
                    'shortopt' => 'R',
                    'arg' => 'DIR',
                    'doc' => 'root directory used when installing files (ala PHP\'s INSTALL_ROOT)',
                    ),
                'ignore-errors' => array(
                    'doc' => 'force install even if there were errors',
                    ),
                'alldeps' => array(
                    'shortopt' => 'a',
                    'doc' => 'install all required and optional dependencies',
                    ),
                'onlyreqdeps' => array(
                    'shortopt' => 'o',
                    'doc' => 'install all required dependencies',
                    ),
                'offline' => array(
                    'shortopt' => 'O',
                    'doc' => 'do not attempt to download any urls or contact channels',
                    ),
                'pretend' => array(
                    'shortopt' => 'p',
                    'doc' => 'Only list the packages that would be downloaded',
                    ),
                ),
            'doc' => '<package> ...
Upgrades one or more PEAR packages.  See documentation for the
"install" command for ways to specify a package.

When upgrading, your package will be updated if the provided new
package has a higher version number (use the -f option if you need to
upgrade anyway).

More than one package may be specified at once.
'),
        'upgrade-all' => array(
            'summary' => 'Upgrade All Packages [Deprecated in favor of calling upgrade with no parameters]',
            'function' => 'doUpgradeAll',
            'shortcut' => 'ua',
            'options' => array(
                'channel' => array(
                    'shortopt' => 'c',
                    'doc' => 'upgrade packages from a specific channel',
                    'arg' => 'CHAN',
                    ),
                'nodeps' => array(
                    'shortopt' => 'n',
                    'doc' => 'ignore dependencies, upgrade anyway',
                    ),
                'register-only' => array(
                    'shortopt' => 'r',
                    'doc' => 'do not install files, only register the package as upgraded',
                    ),
                'nobuild' => array(
                    'shortopt' => 'B',
                    'doc' => 'don\'t build C extensions',
                    ),
                'nocompress' => array(
                    'shortopt' => 'Z',
                    'doc' => 'request uncompressed files when downloading',
                    ),
                'installroot' => array(
                    'shortopt' => 'R',
                    'arg' => 'DIR',
                    'doc' => 'root directory used when installing files (ala PHP\'s INSTALL_ROOT), use packagingroot for RPM',
                    ),
                'ignore-errors' => array(
                    'doc' => 'force install even if there were errors',
                    ),
                'loose' => array(
                    'doc' => 'do not check for recommended dependency version',
                    ),
                ),
            'doc' => '
WARNING: This function is deprecated in favor of using the upgrade command with no params

Upgrades all packages that have a newer release available.  Upgrades are
done only if there is a release available of the state specified in
"preferred_state" (currently {config preferred_state}), or a state considered
more stable.
'),
        'uninstall' => array(
            'summary' => 'Un-install Package',
            'function' => 'doUninstall',
            'shortcut' => 'un',
            'options' => array(
                'nodeps' => array(
                    'shortopt' => 'n',
                    'doc' => 'ignore dependencies, uninstall anyway',
                    ),
                'register-only' => array(
                    'shortopt' => 'r',
                    'doc' => 'do not remove files, only register the packages as not installed',
                    ),
                'installroot' => array(
                    'shortopt' => 'R',
                    'arg' => 'DIR',
                    'doc' => 'root directory used when installing files (ala PHP\'s INSTALL_ROOT)',
                    ),
                'ignore-errors' => array(
                    'doc' => 'force install even if there were errors',
                    ),
                'offline' => array(
                    'shortopt' => 'O',
                    'doc' => 'do not attempt to uninstall remotely',
                    ),
                ),
            'doc' => '[channel/]<package> ...
Uninstalls one or more PEAR packages.  More than one package may be
specified at once.  Prefix with channel name to uninstall from a
channel not in your default channel ({config default_channel})
'),
        'bundle' => array(
            'summary' => 'Unpacks a Pecl Package',
            'function' => 'doBundle',
            'shortcut' => 'bun',
            'options' => array(
                'destination' => array(
                   'shortopt' => 'd',
                    'arg' => 'DIR',
                    'doc' => 'Optional destination directory for unpacking (defaults to current path or "ext" if exists)',
                    ),
                'force' => array(
                    'shortopt' => 'f',
                    'doc' => 'Force the unpacking even if there were errors in the package',
                ),
            ),
            'doc' => '<package>
Unpacks a Pecl Package into the selected location. It will download the
package if needed.
'),
        'run-scripts' => array(
            'summary' => 'Run Post-Install Scripts bundled with a package',
            'function' => 'doRunScripts',
            'shortcut' => 'rs',
            'options' => array(
            ),
            'doc' => '<package>
Run post-installation scripts in package <package>, if any exist.
'),
    );

    // }}}
    // {{{ constructor

    /**
     * PEAR_Command_Install constructor.
     *
     * @access public
     */
    function PEAR_Command_Install(&$ui, &$config)
    {
        parent::PEAR_Command_Common($ui, $config);
    }

    // }}}

    /**
     * For unit testing purposes
     */
    function &getDownloader(&$ui, $options, &$config)
    {
        if (!class_exists('PEAR_Downloader')) {
            require_once 'PEAR/Downloader.php';
        }
        $a = &new PEAR_Downloader($ui, $options, $config);
        return $a;
    }

    /**
     * For unit testing purposes
     */
    function &getInstaller(&$ui)
    {
        if (!class_exists('PEAR_Installer')) {
            require_once 'PEAR/Installer.php';
        }
        $a = &new PEAR_Installer($ui);
        return $a;
    }

    function enableExtension($binaries, $type)
    {
        if (!($phpini = $this->config->get('php_ini', null, 'pear.php.net'))) {
            return PEAR::raiseError('configuration option "php_ini" is not set to php.ini location');
        }
        $ini = $this->_parseIni($phpini);
        if (PEAR::isError($ini)) {
            return $ini;
        }
        $line = 0;
        if ($type == 'extsrc' || $type == 'extbin') {
            $search = 'extensions';
            $enable = 'extension';
        } else {
            $search = 'zend_extensions';
            ob_start();
            phpinfo(INFO_GENERAL);
            $info = ob_get_contents();
            ob_end_clean();
            $debug = function_exists('leak') ? '_debug' : '';
            $ts = preg_match('/Thread Safety.+enabled/', $info) ? '_ts' : '';
            $enable = 'zend_extension' . $debug . $ts;
        }
        foreach ($ini[$search] as $line => $extension) {
            if (in_array($extension, $binaries, true) || in_array(
                  $ini['extension_dir'] . DIRECTORY_SEPARATOR . $extension, $binaries, true)) {
                // already enabled - assume if one is, all are
                return true;
            }
        }
        if ($line) {
            $newini = array_slice($ini['all'], 0, $line);
        } else {
            $newini = array();
        }
        foreach ($binaries as $binary) {
            if ($ini['extension_dir']) {
                $binary = basename($binary);
            }
            $newini[] = $enable . '="' . $binary . '"' . (OS_UNIX ? "\n" : "\r\n");
        }
        $newini = array_merge($newini, array_slice($ini['all'], $line));
        $fp = @fopen($phpini, 'wb');
        if (!$fp) {
            return PEAR::raiseError('cannot open php.ini "' . $phpini . '" for writing');
        }
        foreach ($newini as $line) {
            fwrite($fp, $line);
        }
        fclose($fp);
        return true;
    }

    function disableExtension($binaries, $type)
    {
        if (!($phpini = $this->config->get('php_ini', null, 'pear.php.net'))) {
            return PEAR::raiseError('configuration option "php_ini" is not set to php.ini location');
        }
        $ini = $this->_parseIni($phpini);
        if (PEAR::isError($ini)) {
            return $ini;
        }
        $line = 0;
        if ($type == 'extsrc' || $type == 'extbin') {
            $search = 'extensions';
            $enable = 'extension';
        } else {
            $search = 'zend_extensions';
            ob_start();
            phpinfo(INFO_GENERAL);
            $info = ob_get_contents();
            ob_end_clean();
            $debug = function_exists('leak') ? '_debug' : '';
            $ts = preg_match('/Thread Safety.+enabled/', $info) ? '_ts' : '';
            $enable = 'zend_extension' . $debug . $ts;
        }
        $found = false;
        foreach ($ini[$search] as $line => $extension) {
            if (in_array($extension, $binaries, true) || in_array(
                  $ini['extension_dir'] . DIRECTORY_SEPARATOR . $extension, $binaries, true)) {
                $found = true;
                break;
            }
        }
        if (!$found) {
            // not enabled
            return true;
        }
        $fp = @fopen($phpini, 'wb');
        if (!$fp) {
            return PEAR::raiseError('cannot open php.ini "' . $phpini . '" for writing');
        }
        if ($line) {
            $newini = array_slice($ini['all'], 0, $line);
            // delete the enable line
            $newini = array_merge($newini, array_slice($ini['all'], $line + 1));
        } else {
            $newini = array_slice($ini['all'], 1);
        }
        foreach ($newini as $line) {
            fwrite($fp, $line);
        }
        fclose($fp);
        return true;
    }

    function _parseIni($filename)
    {
        if (!file_exists($filename)) {
            return PEAR::raiseError('php.ini "' . $filename . '" does not exist');
        }

        if (filesize($filename) > 300000) {
            return PEAR::raiseError('php.ini "' . $filename . '" is too large, aborting');
        }

        ob_start();
        phpinfo(INFO_GENERAL);
        $info = ob_get_contents();
        ob_end_clean();
        $debug = function_exists('leak') ? '_debug' : '';
        $ts = preg_match('/Thread Safety.+enabled/', $info) ? '_ts' : '';
        $zend_extension_line = 'zend_extension' . $debug . $ts;
        $all = @file($filename);
        if ($all === false) {
            return PEAR::raiseError('php.ini "' . $filename .'" could not be read');
        }
        $zend_extensions = $extensions = array();
        // assume this is right, but pull from the php.ini if it is found
        $extension_dir = ini_get('extension_dir');
        foreach ($all as $linenum => $line) {
            $line = trim($line);
            if (!$line) {
                continue;
            }
            if ($line[0] == ';') {
                continue;
            }
            if (strtolower(substr($line, 0, 13)) == 'extension_dir') {
                $line = trim(substr($line, 13));
                if ($line[0] == '=') {
                    $x = trim(substr($line, 1));
                    $x = explode(';', $x);
                    $extension_dir = str_replace('"', '', array_shift($x));
                    continue;
                }
            }
            if (strtolower(substr($line, 0, 9)) == 'extension') {
                $line = trim(substr($line, 9));
                if ($line[0] == '=') {
                    $x = trim(substr($line, 1));
                    $x = explode(';', $x);
                    $extensions[$linenum] = str_replace('"', '', array_shift($x));
                    continue;
                }
            }
            if (strtolower(substr($line, 0, strlen($zend_extension_line))) ==
                  $zend_extension_line) {
                $line = trim(substr($line, strlen($zend_extension_line)));
                if ($line[0] == '=') {
                    $x = trim(substr($line, 1));
                    $x = explode(';', $x);
                    $zend_extensions[$linenum] = str_replace('"', '', array_shift($x));
                    continue;
                }
            }
        }
        return array(
            'extensions' => $extensions,
            'zend_extensions' => $zend_extensions,
            'extension_dir' => $extension_dir,
            'all' => $all,
        );
    }

    // {{{ doInstall()

    function doInstall($command, $options, $params)
    {
        if (!class_exists('PEAR_PackageFile')) {
            require_once 'PEAR/PackageFile.php';
        }

        if (isset($options['installroot']) && isset($options['packagingroot'])) {
            return $this->raiseError('ERROR: cannot use both --installroot and --packagingroot');
        }

        $reg = &$this->config->getRegistry();
        $channel = isset($options['channel']) ? $options['channel'] : $this->config->get('default_channel');
        if (!$reg->channelExists($channel)) {
            return $this->raiseError('Channel "' . $channel . '" does not exist');
        }

        if (empty($this->installer)) {
            $this->installer = &$this->getInstaller($this->ui);
        }

        if ($command == 'upgrade' || $command == 'upgrade-all') {
            // If people run the upgrade command but pass nothing, emulate a upgrade-all
            if ($command == 'upgrade' && empty($params)) {
                return $this->doUpgradeAll($command, $options, $params);
            }
            $options['upgrade'] = true;
        } else {
            $packages = $params;
        }

        $instreg = &$reg; // instreg used to check if package is installed
        if (isset($options['packagingroot']) && !isset($options['upgrade'])) {
            $packrootphp_dir = $this->installer->_prependPath(
                $this->config->get('php_dir', null, 'pear.php.net'),
                $options['packagingroot']);
            $instreg = new PEAR_Registry($packrootphp_dir); // other instreg!

            if ($this->config->get('verbose') > 2) {
                $this->ui->outputData('using package root: ' . $options['packagingroot']);
            }
        }

        $abstractpackages = $otherpackages = array();
        // parse params
        PEAR::staticPushErrorHandling(PEAR_ERROR_RETURN);

        foreach ($params as $param) {
            if (strpos($param, 'http://') === 0) {
                $otherpackages[] = $param;
                continue;
            }

            if (strpos($param, 'channel://') === false && @file_exists($param)) {
                if (isset($options['force'])) {
                    $otherpackages[] = $param;
                    continue;
                }

                $pkg = new PEAR_PackageFile($this->config);
                $pf  = $pkg->fromAnyFile($param, PEAR_VALIDATE_DOWNLOADING);
                if (PEAR::isError($pf)) {
                    $otherpackages[] = $param;
                    continue;
                }

                $exists   = $reg->packageExists($pf->getPackage(), $pf->getChannel());
                $pversion = $reg->packageInfo($pf->getPackage(), 'version', $pf->getChannel());
                $version_compare = version_compare($pf->getVersion(), $pversion, '<=');
                if ($exists && $version_compare) {
                    if ($this->config->get('verbose')) {
                        $this->ui->outputData('Ignoring installed package ' .
                            $reg->parsedPackageNameToString(
                            array('package' => $pf->getPackage(),
                                  'channel' => $pf->getChannel()), true));
                    }
                    continue;
                }
                $otherpackages[] = $param;
                continue;
            }

            $e = $reg->parsePackageName($param, $channel);
            if (PEAR::isError($e)) {
                $otherpackages[] = $param;
            } else {
                $abstractpackages[] = $e;
            }
        }
        PEAR::staticPopErrorHandling();

        // if there are any local package .tgz or remote static url, we can't
        // filter.  The filter only works for abstract packages
        if (count($abstractpackages) && !isset($options['force'])) {
            // when not being forced, only do necessary upgrades/installs
            if (isset($options['upgrade'])) {
                $abstractpackages = $this->_filterUptodatePackages($abstractpackages, $command);
            } else {
                $count = count($abstractpackages);
                foreach ($abstractpackages as $i => $package) {
                    if (isset($package['group'])) {
                        // do not filter out install groups
                        continue;
                    }

                    if ($instreg->packageExists($package['package'], $package['channel'])) {
                        if ($count > 1) {
                            if ($this->config->get('verbose')) {
                                $this->ui->outputData('Ignoring installed package ' .
                                    $reg->parsedPackageNameToString($package, true));
                            }
                            unset($abstractpackages[$i]);
                        } elseif ($count === 1) {
                            // Lets try to upgrade it since it's already installed
                            $options['upgrade'] = true;
                        }
                    }
                }
            }
            $abstractpackages =
                array_map(array($reg, 'parsedPackageNameToString'), $abstractpackages);
        } elseif (count($abstractpackages)) {
            $abstractpackages =
                array_map(array($reg, 'parsedPackageNameToString'), $abstractpackages);
        }

        $packages = array_merge($abstractpackages, $otherpackages);
        if (!count($packages)) {
            $c = '';
            if (isset($options['channel'])){
                $c .= ' in channel "' . $options['channel'] . '"';
            }
            $this->ui->outputData('Nothing to ' . $command . $c);
            return true;
        }

        $this->downloader = &$this->getDownloader($this->ui, $options, $this->config);
        $errors = $downloaded = $binaries = array();
        $downloaded = &$this->downloader->download($packages);
        if (PEAR::isError($downloaded)) {
            return $this->raiseError($downloaded);
        }

        $errors = $this->downloader->getErrorMsgs();
        if (count($errors)) {
            $err = array();
            $err['data'] = array();
            foreach ($errors as $error) {
                if ($error !== null) {
                    $err['data'][] = array($error);
                }
            }

            if (!empty($err['data'])) {
                $err['headline'] = 'Install Errors';
                $this->ui->outputData($err);
            }

            if (!count($downloaded)) {
                return $this->raiseError("$command failed");
            }
        }

        $data = array(
            'headline' => 'Packages that would be Installed'
        );

        if (isset($options['pretend'])) {
            foreach ($downloaded as $package) {
                $data['data'][] = array($reg->parsedPackageNameToString($package->getParsedPackage()));
            }
            $this->ui->outputData($data, 'pretend');
            return true;
        }

        $this->installer->setOptions($options);
        $this->installer->sortPackagesForInstall($downloaded);
        if (PEAR::isError($err = $this->installer->setDownloadedPackages($downloaded))) {
            $this->raiseError($err->getMessage());
            return true;
        }

        $binaries = $extrainfo = array();
        foreach ($downloaded as $param) {
            PEAR::staticPushErrorHandling(PEAR_ERROR_RETURN);
            $info = $this->installer->install($param, $options);
            PEAR::staticPopErrorHandling();
            if (PEAR::isError($info)) {
                $oldinfo = $info;
                $pkg = &$param->getPackageFile();
                if ($info->getCode() != PEAR_INSTALLER_NOBINARY) {
                    if (!($info = $pkg->installBinary($this->installer))) {
                        $this->ui->outputData('ERROR: ' .$oldinfo->getMessage());
                        continue;
                    }

                    // we just installed a different package than requested,
                    // let's change the param and info so that the rest of this works
                    $param = $info[0];
                    $info  = $info[1];
                }
            }

            if (!is_array($info)) {
                return $this->raiseError("$command failed");
            }

            if ($param->getPackageType() == 'extsrc' ||
                  $param->getPackageType() == 'extbin' ||
                  $param->getPackageType() == 'zendextsrc' ||
                  $param->getPackageType() == 'zendextbin'
            ) {
                $pkg = &$param->getPackageFile();
                if ($instbin = $pkg->getInstalledBinary()) {
                    $instpkg = &$instreg->getPackage($instbin, $pkg->getChannel());
                } else {
                    $instpkg = &$instreg->getPackage($pkg->getPackage(), $pkg->getChannel());
                }

                foreach ($instpkg->getFilelist() as $name => $atts) {
                    $pinfo = pathinfo($atts['installed_as']);
                    if (!isset($pinfo['extension']) ||
                          in_array($pinfo['extension'], array('c', 'h'))
                    ) {
                        continue; // make sure we don't match php_blah.h
                    }

                    if ((strpos($pinfo['basename'], 'php_') === 0 &&
                          $pinfo['extension'] == 'dll') ||
                          // most unices
                          $pinfo['extension'] == 'so' ||
                          // hp-ux
                          $pinfo['extension'] == 'sl') {
                        $binaries[] = array($atts['installed_as'], $pinfo);
                        break;
                    }
                }

                if (count($binaries)) {
                    foreach ($binaries as $pinfo) {
                        PEAR::staticPushErrorHandling(PEAR_ERROR_RETURN);
                        $ret = $this->enableExtension(array($pinfo[0]), $param->getPackageType());
                        PEAR::staticPopErrorHandling();
                        if (PEAR::isError($ret)) {
                            $extrainfo[] = $ret->getMessage();
                            if ($param->getPackageType() == 'extsrc' ||
                                  $param->getPackageType() == 'extbin') {
                                $exttype = 'extension';
                                $extpath = $pinfo[1]['basename'];
                            } else {
                                if (version_compare(PHP_VERSION, '5.3.0', '<')) {
                                    ob_start();
                                    phpinfo(INFO_GENERAL);
                                    $info = ob_get_contents();
                                    ob_end_clean();
                                    $debug = function_exists('leak') ? '_debug' : '';
                                    $ts = preg_match('/Thread Safety.+enabled/', $info) ? '_ts' : '';
                                } else {
                                    $debug = '';
                                    $ts = '';
                                }
                                $exttype = 'zend_extension' . $debug . $ts;
                                $extpath = $atts['installed_as'];
                            }
                            $extrainfo[] = 'You should add "' . $exttype . '=' .
                                $extpath . '" to php.ini';
                        } else {
                            $extrainfo[] = 'Extension ' . $instpkg->getProvidesExtension() .
                                ' enabled in php.ini';
                        }
                    }
                }
            }

            if ($this->config->get('verbose') > 0) {
                $chan = $param->getChannel();
                $label = $reg->parsedPackageNameToString(
                    array(
                        'channel' => $chan,
                        'package' => $param->getPackage(),
                        'version' => $param->getVersion(),
                    ));
                $out = array('data' => "$command ok: $label");
                if (isset($info['release_warnings'])) {
                    $out['release_warnings'] = $info['release_warnings'];
                }
                $this->ui->outputData($out, $command);

                if (!isset($options['register-only']) && !isset($options['offline'])) {
                    if ($this->config->isDefinedLayer('ftp')) {
                        PEAR::staticPushErrorHandling(PEAR_ERROR_RETURN);
                        $info = $this->installer->ftpInstall($param);
                        PEAR::staticPopErrorHandling();
                        if (PEAR::isError($info)) {
                            $this->ui->outputData($info->getMessage());
                            $this->ui->outputData("remote install failed: $label");
                        } else {
                            $this->ui->outputData("remote install ok: $label");
                        }
                    }
                }
            }

            $deps = $param->getDeps();
            if ($deps) {
                if (isset($deps['group'])) {
                    $groups = $deps['group'];
                    if (!isset($groups[0])) {
                        $groups = array($groups);
                    }

                    foreach ($groups as $group) {
                        if ($group['attribs']['name'] == 'default') {
                            // default group is always installed, unless the user
                            // explicitly chooses to install another group
                            continue;
                        }
                        $extrainfo[] = $param->getPackage() . ': Optional feature ' .
                            $group['attribs']['name'] . ' available (' .
                            $group['attribs']['hint'] . ')';
                    }

                    $extrainfo[] = $param->getPackage() .
                        ': To install optional features use "pear install ' .
                        $reg->parsedPackageNameToString(
                            array('package' => $param->getPackage(),
                                  'channel' => $param->getChannel()), true) .
                              '#featurename"';
                }
            }

            $pkg = &$instreg->getPackage($param->getPackage(), $param->getChannel());
            // $pkg may be NULL if install is a 'fake' install via --packagingroot
            if (is_object($pkg)) {
                $pkg->setConfig($this->config);
                if ($list = $pkg->listPostinstallScripts()) {
                    $pn = $reg->parsedPackageNameToString(array('channel' =>
                       $param->getChannel(), 'package' => $param->getPackage()), true);
                    $extrainfo[] = $pn . ' has post-install scripts:';
                    foreach ($list as $file) {
                        $extrainfo[] = $file;
                    }
                    $extrainfo[] = $param->getPackage() .
                        ': Use "pear run-scripts ' . $pn . '" to finish setup.';
                    $extrainfo[] = 'DO NOT RUN SCRIPTS FROM UNTRUSTED SOURCES';
                }
            }
        }

        if (count($extrainfo)) {
            foreach ($extrainfo as $info) {
                $this->ui->outputData($info);
            }
        }

        return true;
    }

    // }}}
    // {{{ doUpgradeAll()

    function doUpgradeAll($command, $options, $params)
    {
        $reg = &$this->config->getRegistry();
        $upgrade = array();

        if (isset($options['channel'])) {
            $channels = array($options['channel']);
        } else {
            $channels = $reg->listChannels();
        }

        foreach ($channels as $channel) {
            if ($channel == '__uri') {
                continue;
            }

            // parse name with channel
            foreach ($reg->listPackages($channel) as $name) {
                $upgrade[] = $reg->parsedPackageNameToString(array(
                        'channel' => $channel,
                        'package' => $name
                    ));
            }
        }

        $err = $this->doInstall($command, $options, $upgrade);
        if (PEAR::isError($err)) {
            $this->ui->outputData($err->getMessage(), $command);
        }
   }

    // }}}
    // {{{ doUninstall()

    function doUninstall($command, $options, $params)
    {
        if (count($params) < 1) {
            return $this->raiseError("Please supply the package(s) you want to uninstall");
        }

        if (empty($this->installer)) {
            $this->installer = &$this->getInstaller($this->ui);
        }

        if (isset($options['remoteconfig'])) {
            $e = $this->config->readFTPConfigFile($options['remoteconfig']);
            if (!PEAR::isError($e)) {
                $this->installer->setConfig($this->config);
            }
        }

        $reg = &$this->config->getRegistry();
        $newparams = array();
        $binaries = array();
        $badparams = array();
        foreach ($params as $pkg) {
            $channel = $this->config->get('default_channel');
            PEAR::staticPushErrorHandling(PEAR_ERROR_RETURN);
            $parsed = $reg->parsePackageName($pkg, $channel);
            PEAR::staticPopErrorHandling();
            if (!$parsed || PEAR::isError($parsed)) {
                $badparams[] = $pkg;
                continue;
            }
            $package = $parsed['package'];
            $channel = $parsed['channel'];
            $info = &$reg->getPackage($package, $channel);
            if ($info === null &&
                 ($channel == 'pear.php.net' || $channel == 'pecl.php.net')) {
                // make sure this isn't a package that has flipped from pear to pecl but
                // used a package.xml 1.0
                $testc = ($channel == 'pear.php.net') ? 'pecl.php.net' : 'pear.php.net';
                $info = &$reg->getPackage($package, $testc);
                if ($info !== null) {
                    $channel = $testc;
                }
            }
            if ($info === null) {
                $badparams[] = $pkg;
            } else {
                $newparams[] = &$info;
                // check for binary packages (this is an alias for those packages if so)
                if ($installedbinary = $info->getInstalledBinary()) {
                    $this->ui->log('adding binary package ' .
                        $reg->parsedPackageNameToString(array('channel' => $channel,
                            'package' => $installedbinary), true));
                    $newparams[] = &$reg->getPackage($installedbinary, $channel);
                }
                // add the contents of a dependency group to the list of installed packages
                if (isset($parsed['group'])) {
                    $group = $info->getDependencyGroup($parsed['group']);
                    if ($group) {
                        $installed = $reg->getInstalledGroup($group);
                        if ($installed) {
                            foreach ($installed as $i => $p) {
                                $newparams[] = &$installed[$i];
                            }
                        }
                    }
                }
            }
        }
        $err = $this->installer->sortPackagesForUninstall($newparams);
        if (PEAR::isError($err)) {
            $this->ui->outputData($err->getMessage(), $command);
            return true;
        }
        $params = $newparams;
        // twist this to use it to check on whether dependent packages are also being uninstalled
        // for circular dependencies like subpackages
        $this->installer->setUninstallPackages($newparams);
        $params = array_merge($params, $badparams);
        $binaries = array();
        foreach ($params as $pkg) {
            $this->installer->pushErrorHandling(PEAR_ERROR_RETURN);
            if ($err = $this->installer->uninstall($pkg, $options)) {
                $this->installer->popErrorHandling();
                if (PEAR::isError($err)) {
                    $this->ui->outputData($err->getMessage(), $command);
                    continue;
                }
                if ($pkg->getPackageType() == 'extsrc' ||
                      $pkg->getPackageType() == 'extbin' ||
                      $pkg->getPackageType() == 'zendextsrc' ||
                      $pkg->getPackageType() == 'zendextbin') {
                    if ($instbin = $pkg->getInstalledBinary()) {
                        continue; // this will be uninstalled later
                    }

                    foreach ($pkg->getFilelist() as $name => $atts) {
                        $pinfo = pathinfo($atts['installed_as']);
                        if (!isset($pinfo['extension']) ||
                              in_array($pinfo['extension'], array('c', 'h'))) {
                            continue; // make sure we don't match php_blah.h
                        }
                        if ((strpos($pinfo['basename'], 'php_') === 0 &&
                              $pinfo['extension'] == 'dll') ||
                              // most unices
                              $pinfo['extension'] == 'so' ||
                              // hp-ux
                              $pinfo['extension'] == 'sl') {
                            $binaries[] = array($atts['installed_as'], $pinfo);
                            break;
                        }
                    }
                    if (count($binaries)) {
                        foreach ($binaries as $pinfo) {
                            PEAR::staticPushErrorHandling(PEAR_ERROR_RETURN);
                            $ret = $this->disableExtension(array($pinfo[0]), $pkg->getPackageType());
                            PEAR::staticPopErrorHandling();
                            if (PEAR::isError($ret)) {
                                $extrainfo[] = $ret->getMessage();
                                if ($pkg->getPackageType() == 'extsrc' ||
                                      $pkg->getPackageType() == 'extbin') {
                                    $exttype = 'extension';
                                } else {
                                    ob_start();
                                    phpinfo(INFO_GENERAL);
                                    $info = ob_get_contents();
                                    ob_end_clean();
                                    $debug = function_exists('leak') ? '_debug' : '';
                                    $ts = preg_match('/Thread Safety.+enabled/', $info) ? '_ts' : '';
                                    $exttype = 'zend_extension' . $debug . $ts;
                                }
                                $this->ui->outputData('Unable to remove "' . $exttype . '=' .
                                    $pinfo[1]['basename'] . '" from php.ini', $command);
                            } else {
                                $this->ui->outputData('Extension ' . $pkg->getProvidesExtension() .
                                    ' disabled in php.ini', $command);
                            }
                        }
                    }
                }
                $savepkg = $pkg;
                if ($this->config->get('verbose') > 0) {
                    if (is_object($pkg)) {
                        $pkg = $reg->parsedPackageNameToString($pkg);
                    }
                    $this->ui->outputData("uninstall ok: $pkg", $command);
                }
                if (!isset($options['offline']) && is_object($savepkg) &&
                      defined('PEAR_REMOTEINSTALL_OK')) {
                    if ($this->config->isDefinedLayer('ftp')) {
                        $this->installer->pushErrorHandling(PEAR_ERROR_RETURN);
                        $info = $this->installer->ftpUninstall($savepkg);
                        $this->installer->popErrorHandling();
                        if (PEAR::isError($info)) {
                            $this->ui->outputData($info->getMessage());
                            $this->ui->outputData("remote uninstall failed: $pkg");
                        } else {
                            $this->ui->outputData("remote uninstall ok: $pkg");
                        }
                    }
                }
            } else {
                $this->installer->popErrorHandling();
                if (!is_object($pkg)) {
                    return $this->raiseError("uninstall failed: $pkg");
                }
                $pkg = $reg->parsedPackageNameToString($pkg);
            }
        }

        return true;
    }

    // }}}


    // }}}
    // {{{ doBundle()
    /*
    (cox) It just downloads and untars the package, does not do
            any check that the PEAR_Installer::_installFile() does.
    */

    function doBundle($command, $options, $params)
    {
        $opts = array(
            'force'        => true,
            'nodeps'       => true,
            'soft'         => true,
            'downloadonly' => true
        );
        $downloader = &$this->getDownloader($this->ui, $opts, $this->config);
        $reg = &$this->config->getRegistry();
        if (count($params) < 1) {
            return $this->raiseError("Please supply the package you want to bundle");
        }

        if (isset($options['destination'])) {
            if (!is_dir($options['destination'])) {
                System::mkdir('-p ' . $options['destination']);
            }
            $dest = realpath($options['destination']);
        } else {
            $pwd  = getcwd();
            $dir  = $pwd . DIRECTORY_SEPARATOR . 'ext';
            $dest = is_dir($dir) ? $dir : $pwd;
        }
        PEAR::staticPushErrorHandling(PEAR_ERROR_RETURN);
        $err = $downloader->setDownloadDir($dest);
        PEAR::staticPopErrorHandling();
        if (PEAR::isError($err)) {
            return PEAR::raiseError('download directory "' . $dest .
                '" is not writeable.');
        }
        $result = &$downloader->download(array($params[0]));
        if (PEAR::isError($result)) {
            return $result;
        }
        if (!isset($result[0])) {
            return $this->raiseError('unable to unpack ' . $params[0]);
        }
        $pkgfile = &$result[0]->getPackageFile();
        $pkgname = $pkgfile->getName();
        $pkgversion = $pkgfile->getVersion();

        // Unpacking -------------------------------------------------
        $dest .= DIRECTORY_SEPARATOR . $pkgname;
        $orig = $pkgname . '-' . $pkgversion;

        $tar = &new Archive_Tar($pkgfile->getArchiveFile());
        if (!$tar->extractModify($dest, $orig)) {
            return $this->raiseError('unable to unpack ' . $pkgfile->getArchiveFile());
        }
        $this->ui->outputData("Package ready at '$dest'");
    // }}}
    }

    // }}}

    function doRunScripts($command, $options, $params)
    {
        if (!isset($params[0])) {
            return $this->raiseError('run-scripts expects 1 parameter: a package name');
        }

        $reg = &$this->config->getRegistry();
        PEAR::staticPushErrorHandling(PEAR_ERROR_RETURN);
        $parsed = $reg->parsePackageName($params[0], $this->config->get('default_channel'));
        PEAR::staticPopErrorHandling();
        if (PEAR::isError($parsed)) {
            return $this->raiseError($parsed);
        }

        $package = &$reg->getPackage($parsed['package'], $parsed['channel']);
        if (!is_object($package)) {
            return $this->raiseError('Could not retrieve package "' . $params[0] . '" from registry');
        }

        $package->setConfig($this->config);
        $package->runPostinstallScripts();
        $this->ui->outputData('Install scripts complete', $command);
        return true;
    }

    /**
     * Given a list of packages, filter out those ones that are already up to date
     *
     * @param $packages: packages, in parsed array format !
     * @return list of packages that can be upgraded
     */
    function _filterUptodatePackages($packages, $command)
    {
        $reg = &$this->config->getRegistry();
        $latestReleases = array();

        $ret = array();
        foreach ($packages as $package) {
            if (isset($package['group'])) {
                $ret[] = $package;
                continue;
            }

            $channel = $package['channel'];
            $name    = $package['package'];
            if (!$reg->packageExists($name, $channel)) {
                $ret[] = $package;
                continue;
            }

            if (!isset($latestReleases[$channel])) {
                // fill in cache for this channel
                $chan = &$reg->getChannel($channel);
                if (PEAR::isError($chan)) {
                    return $this->raiseError($chan);
                }

                $base2 = false;
                $preferred_mirror = $this->config->get('preferred_mirror', null, $channel);
                if ($chan->supportsREST($preferred_mirror) &&
                    (
                       //($base2 = $chan->getBaseURL('REST1.4', $preferred_mirror)) ||
                       ($base  = $chan->getBaseURL('REST1.0', $preferred_mirror))
                    )
                ) {
                    $dorest = true;
                }

                PEAR::staticPushErrorHandling(PEAR_ERROR_RETURN);
                if (!isset($package['state'])) {
                    $state = $this->config->get('preferred_state', null, $channel);
                } else {
                    $state = $package['state'];
                }

                if ($dorest) {
                    if ($base2) {
                        $rest = &$this->config->getREST('1.4', array());
                        $base = $base2;
                    } else {
                        $rest = &$this->config->getREST('1.0', array());
                    }

                    $installed = array_flip($reg->listPackages($channel));
                    $latest    = $rest->listLatestUpgrades($base, $state, $installed, $channel, $reg);
                }

                PEAR::staticPopErrorHandling();
                if (PEAR::isError($latest)) {
                    $this->ui->outputData('Error getting channel info from ' . $channel .
                        ': ' . $latest->getMessage());
                    continue;
                }

                $latestReleases[$channel] = array_change_key_case($latest);
            }

            // check package for latest release
            $name_lower = strtolower($name);
            if (isset($latestReleases[$channel][$name_lower])) {
                // if not set, up to date
                $inst_version    = $reg->packageInfo($name, 'version', $channel);
                $channel_version = $latestReleases[$channel][$name_lower]['version'];
                if (version_compare($channel_version, $inst_version, 'le')) {
                    // installed version is up-to-date
                    continue;
                }

                // maintain BC
                if ($command == 'upgrade-all') {
                    $this->ui->outputData(array('data' => 'Will upgrade ' .
                        $reg->parsedPackageNameToString($package)), $command);
                }
                $ret[] = $package;
            }
        }

        return $ret;
    }
}