first commit

typo3/sysext/extensionmanager/Classes/Utility/Parser/AbstractExtensionXmlParser.php

@@ -0,0 +1,399 @@
+<?php
+namespace TYPO3\CMS\Extensionmanager\Utility\Parser;
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+/**
+ * Abstract parser for TYPO3's extension.xml file.
+ * @internal This class is a specific ExtensionManager implementation and is not part of the Public TYPO3 API.
+ */
+abstract class AbstractExtensionXmlParser extends AbstractXmlParser
+{
+    /**
+     * Keeps current author company of an extension's version.
+     *
+     * @var string
+     */
+    protected $authorcompany;
+
+    /**
+     * Keeps current author mail address of an extension's version.
+     *
+     * @var string
+     */
+    protected $authoremail;
+
+    /**
+     * Keeps current author name of an extension's version.
+     *
+     * @var string
+     */
+    protected $authorname;
+
+    /**
+     * Keeps current category of an extension's version.
+     *
+     * @var string
+     */
+    protected $category;
+
+    /**
+     * Keeps current dependencies of an extension's version.
+     *
+     * @var string
+     */
+    protected $dependencies;
+
+    /**
+     * Keeps current description of an extension's version.
+     *
+     * @var string
+     */
+    protected $description;
+
+    /**
+     * Keeps current download number sum of all extension's versions.
+     *
+     * @var string
+     */
+    protected $extensionDownloadCounter;
+
+    /**
+     * Keeps current key of an extension.
+     *
+     * @var string
+     */
+    protected $extensionKey;
+
+    /**
+     * Keeps current upload date of an extension's version.
+     *
+     * @var string
+     */
+    protected $lastuploaddate;
+
+    /**
+     * Keeps current owner username of an extension's version.
+     *
+     * @var string
+     */
+    protected $ownerusername;
+
+    /**
+     * Keeps current reviewstate of an extension's version.
+     *
+     * @var string
+     */
+    protected $reviewstate;
+
+    /**
+     * Keeps current state of an extension's version.
+     *
+     * @var string
+     */
+    protected $state;
+
+    /**
+     * Keeps current t3x file hash of an extension's version.
+     *
+     * @var string
+     */
+    protected $t3xfilemd5;
+
+    /**
+     * Keeps current title of an extension's version.
+     *
+     * @var string
+     */
+    protected $title;
+
+    /**
+     * Keeps current upload comment of an extension's version.
+     *
+     * @var string
+     */
+    protected $uploadcomment;
+
+    /**
+     * Keeps current version number.
+     *
+     * @var string
+     */
+    protected $version;
+
+    /**
+     * Keeps current download number of an extension's version.
+     *
+     * @var string
+     */
+    protected $versionDownloadCounter;
+
+    /**
+     * Returns an assoziative array of all extension version properties.
+     *
+     * Valid array keys of returned array are:
+     * extkey, version, alldownloadcounter, downloadcounter, title, description,
+     * state, reviewstate, category, lastuploaddate, uploadcomment, dependencies,
+     * authorname, authoremail, authorcompany, ownerusername, t3xfilemd5
+     *
+     * @see $extensionKey, $version, $extensionDownloadCounter,
+     * @return array assoziative array of an extension version's properties
+     */
+    public function getAll()
+    {
+        $versionProperties = [];
+        $versionProperties['extkey'] = $this->extensionKey;
+        $versionProperties['version'] = $this->version;
+        $versionProperties['alldownloadcounter'] = $this->extensionDownloadCounter;
+        $versionProperties['downloadcounter'] = $this->versionDownloadCounter;
+        $versionProperties['title'] = $this->title;
+        $versionProperties['description'] = $this->description;
+        $versionProperties['state'] = $this->state;
+        $versionProperties['reviewstate'] = $this->reviewstate;
+        $versionProperties['category'] = $this->category;
+        $versionProperties['lastuploaddate'] = $this->lastuploaddate;
+        $versionProperties['uploadcomment'] = $this->uploadcomment;
+        $versionProperties['dependencies'] = $this->dependencies;
+        $versionProperties['authorname'] = $this->authorname;
+        $versionProperties['authoremail'] = $this->authoremail;
+        $versionProperties['authorcompany'] = $this->authorcompany;
+        $versionProperties['ownerusername'] = $this->ownerusername;
+        $versionProperties['t3xfilemd5'] = $this->t3xfilemd5;
+        return $versionProperties;
+    }
+
+    /**
+     * Returns download number sum of all extension's versions.
+     *
+     * @return string download number sum
+     * @see $extensionDLCounter, getAll()
+     */
+    public function getAlldownloadcounter()
+    {
+        return $this->extensionDownloadCounter;
+    }
+
+    /**
+     * Returns company name of extension author.
+     *
+     * @return string company name of extension author
+     * @see $authorcompany, getAll()
+     */
+    public function getAuthorcompany()
+    {
+        return $this->authorcompany;
+    }
+
+    /**
+     * Returns e-mail address of extension author.
+     *
+     * @return string e-mail address of extension author
+     * @see $authoremail, getAll()
+     */
+    public function getAuthoremail()
+    {
+        return $this->authoremail;
+    }
+
+    /**
+     * Returns name of extension author.
+     *
+     * @return string name of extension author
+     * @see $authorname, getAll()
+     */
+    public function getAuthorname()
+    {
+        return $this->authorname;
+    }
+
+    /**
+     * Returns category of an extension.
+     *
+     * @return string extension category
+     * @see $category, getAll()
+     */
+    public function getCategory()
+    {
+        return $this->category;
+    }
+
+    /**
+     * Returns dependencies of an extension's version.
+     *
+     * @return string extension dependencies
+     * @see $dependencies, getAll()
+     */
+    public function getDependencies()
+    {
+        return $this->dependencies;
+    }
+
+    /**
+     * Returns description of an extension's version.
+     *
+     * @return string extension description
+     * @see $description, getAll()
+     */
+    public function getDescription()
+    {
+        return $this->description;
+    }
+
+    /**
+     * Returns download number of an extension's version.
+     *
+     * @return string download number
+     * @see $versionDLCounter, getAll()
+     */
+    public function getDownloadcounter()
+    {
+        return $this->versionDownloadCounter;
+    }
+
+    /**
+     * Returns key of an extension.
+     *
+     * @return string extension key
+     * @see $extensionKey, getAll()
+     */
+    public function getExtkey()
+    {
+        return $this->extensionKey;
+    }
+
+    /**
+     * Returns last uploaddate of an extension's version.
+     *
+     * @return string last upload date of an extension's version
+     * @see $lastuploaddate, getAll()
+     */
+    public function getLastuploaddate()
+    {
+        return $this->lastuploaddate;
+    }
+
+    /**
+     * Returns username of extension owner.
+     *
+     * @return string extension owner's username
+     * @see $ownerusername, getAll()
+     */
+    public function getOwnerusername()
+    {
+        return $this->ownerusername;
+    }
+
+    /**
+     * Returns review state of an extension's version.
+     *
+     * @return string extension review state
+     * @see $reviewstate, getAll()
+     */
+    public function getReviewstate()
+    {
+        return $this->reviewstate;
+    }
+
+    /**
+     * Returns state of an extension's version.
+     *
+     * @return string extension state
+     * @see $state, getAll()
+     */
+    public function getState()
+    {
+        return $this->state;
+    }
+
+    /**
+     * Returns t3x file hash of an extension's version.
+     *
+     * @return string t3x file hash
+     * @see $t3xfilemd5, getAll()
+     */
+    public function getT3xfilemd5()
+    {
+        return $this->t3xfilemd5;
+    }
+
+    /**
+     * Returns title of an extension's version.
+     *
+     * @return string extension title
+     * @see $title, getAll()
+     */
+    public function getTitle()
+    {
+        return $this->title;
+    }
+
+    /**
+     * Returns extension upload comment.
+     *
+     * @return string extension upload comment
+     * @see $uploadcomment, getAll()
+     */
+    public function getUploadcomment()
+    {
+        return $this->uploadcomment;
+    }
+
+    /**
+     * Returns version number.
+     *
+     * @return string version number
+     * @see $version, getAll()
+     */
+    public function getVersion()
+    {
+        return $this->version;
+    }
+
+    /**
+     * Method resets version class properties.
+     *
+     * @param bool $resetAll If TRUE, additionally extension properties are reset
+     * @see $extensionKey, $version, $extensionDLCounter, $versionDLCounter,
+     */
+    protected function resetProperties($resetAll = false)
+    {
+        // resetting at least class property "version" is mandatory
+        // as we need to do some magic in regards to
+        // an extension's and version's child node "downloadcounter"
+        $this->version = $this->title = $this->versionDownloadCounter = $this->description = $this->state = $this->reviewstate = $this->category = $this->lastuploaddate = $this->uploadcomment = $this->dependencies = $this->authorname = $this->authoremail = $this->authorcompany = $this->ownerusername = $this->t3xfilemd5 = null;
+        if ($resetAll) {
+            $this->extensionKey = $this->extensionDownloadCounter = null;
+        }
+    }
+
+    /**
+     * Convert dependencies from TER format to EM_CONF format
+     *
+     * @param string $dependencies serialized dependency array
+     * @return string
+     */
+    protected function convertDependencies($dependencies)
+    {
+        $newDependencies = [];
+        $dependenciesArray = unserialize($dependencies, ['allowed_classes' => false]);
+        if (is_array($dependenciesArray)) {
+            foreach ($dependenciesArray as $version) {
+                if (!empty($version['kind']) && !empty($version['extensionKey'])) {
+                    $newDependencies[$version['kind']][$version['extensionKey']] = $version['versionRange'];
+                }
+            }
+        }
+        return serialize($newDependencies);
+    }
+}

typo3/sysext/extensionmanager/Classes/Utility/Parser/AbstractMirrorXmlParser.php

@@ -0,0 +1,181 @@
+<?php
+namespace TYPO3\CMS\Extensionmanager\Utility\Parser;
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+/**
+ * Abstract parser for TYPO3's mirror.xml file.
+ * @internal This class is a specific ExtensionManager implementation and is not part of the Public TYPO3 API.
+ */
+abstract class AbstractMirrorXmlParser extends AbstractXmlParser
+{
+    /**
+     * Keeps country of currently processed mirror.
+     *
+     * @var string
+     */
+    protected $country;
+
+    /**
+     * Keeps hostname of currently processed mirror.
+     *
+     * @var string
+     */
+    protected $host;
+
+    /**
+     * Keeps path to mirrored TER of currently processed mirror.
+     *
+     * @var string
+     */
+    protected $path;
+
+    /**
+     * Keeps sponsor link of currently processed mirror.
+     *
+     * @var string
+     */
+    protected $sponsorlink;
+
+    /**
+     * Keeps sponsor logo location of currently processed mirror.
+     *
+     * @var string
+     */
+    protected $sponsorlogo;
+
+    /**
+     * Keeps sponsor name of currently processed mirror.
+     *
+     * @var string
+     */
+    protected $sponsorname;
+
+    /**
+     * Keeps title of currently processed mirror.
+     *
+     * @var string
+     */
+    protected $title;
+
+    /**
+     * Returns an associative array of all mirror properties.
+     *
+     * Valid array keys of returned array are:
+     * country, host, path, sponsorlink, sponsorlogo, sponsorname, title
+     *
+     * @return array assoziative array of a mirror's properties
+     * @see $country, $host, $path, $sponsorlink, $sponsorlogo, $sponsorname, $title
+     */
+    public function getAll()
+    {
+        $mirrorProperties = [];
+        $mirrorProperties['title'] = $this->title;
+        $mirrorProperties['host'] = $this->host;
+        $mirrorProperties['path'] = $this->path;
+        $mirrorProperties['country'] = $this->country;
+        $mirrorProperties['sponsorname'] = $this->sponsorname;
+        $mirrorProperties['sponsorlink'] = $this->sponsorlink;
+        $mirrorProperties['sponsorlogo'] = $this->sponsorlogo;
+        return $mirrorProperties;
+    }
+
+    /**
+     * Returns country of currently processed mirror.
+     *
+     * @return string name of country a mirror is located in
+     * @see $country, getAll()
+     */
+    public function getCountry()
+    {
+        return $this->country;
+    }
+
+    /**
+     * Returns host of currently processed mirror.
+     *
+     * @return string host name
+     * @see $host, getAll()
+     */
+    public function getHost()
+    {
+        return $this->host;
+    }
+
+    /**
+     * Returns path to mirrored TER of currently processed mirror.
+     *
+     * @return string path name
+     * @see $path, getAll()
+     */
+    public function getPath()
+    {
+        return $this->path;
+    }
+
+    /**
+     * Returns sponsor link of currently processed mirror.
+     *
+     * @return string URL of a sponsor's website
+     * @see $sponsorlink, getAll()
+     */
+    public function getSponsorlink()
+    {
+        return $this->sponsorlink;
+    }
+
+    /**
+     * Returns sponsor logo location of currently processed mirror.
+     *
+     * @return string a sponsor's logo location
+     * @see $sponsorlogo, getAll()
+     */
+    public function getSponsorlogo()
+    {
+        return $this->sponsorlogo;
+    }
+
+    /**
+     * Returns sponsor name of currently processed mirror.
+     *
+     * @return string name of sponsor
+     * @see $sponsorname, getAll()
+     */
+    public function getSponsorname()
+    {
+        return $this->sponsorname;
+    }
+
+    /**
+     * Returns title of currently processed mirror.
+     *
+     * @return string title of mirror
+     * @see $title, getAll()
+     */
+    public function getTitle()
+    {
+        return $this->title;
+    }
+
+    /**
+     * Method resets version class properties.
+     *
+     * @see $country, $host, $path, $sponsorlink, $sponsorlogo, $sponsorname, $title
+     */
+    protected function resetProperties()
+    {
+        $this->title = $this->host = $this->path = $this->country
+            = $this->sponsorname = $this->sponsorlink = $this->sponsorlogo = null;
+    }
+}

typo3/sysext/extensionmanager/Classes/Utility/Parser/AbstractXmlParser.php

@@ -0,0 +1,113 @@
+<?php
+namespace TYPO3\CMS\Extensionmanager\Utility\Parser;
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+/**
+ * Abstract parser for EM related TYPO3 xml files.
+ * @internal This class is a specific ExtensionManager implementation and is not part of the Public TYPO3 API.
+ */
+abstract class AbstractXmlParser implements \SplSubject
+{
+    /**
+     * Keeps XML parser instance.
+     *
+     * @var mixed
+     */
+    protected $objXml;
+
+    /**
+     * Keeps name of required PHP extension
+     * for this class to work properly.
+     *
+     * @var string
+     */
+    protected $requiredPhpExtensions;
+
+    /**
+     * Keeps list of attached observers.
+     *
+     * @var \SplObserver[]
+     */
+    protected $observers = [];
+
+    /**
+     * Method attaches an observer.
+     *
+     * @param \SplObserver $observer an observer to attach
+     * @see $observers, detach(), notify()
+     */
+    public function attach(\SplObserver $observer)
+    {
+        $this->observers[] = $observer;
+    }
+
+    /**
+     * Method detaches an attached observer
+     *
+     * @param \SplObserver $observer an observer to detach
+     * @see $observers, attach(), notify()
+     */
+    public function detach(\SplObserver $observer)
+    {
+        $key = array_search($observer, $this->observers, true);
+        if ($key !== false) {
+            unset($this->observers[$key]);
+        }
+    }
+
+    /**
+     * Method notifies attached observers.
+     *
+     * @see $observers, attach(), detach()
+     */
+    public function notify()
+    {
+        foreach ($this->observers as $observer) {
+            $observer->update($this);
+        }
+    }
+
+    /**
+     * Method determines if a necessary PHP extension is available.
+     *
+     * Method tries to load the extension if necessary and possible.
+     *
+     * @return bool TRUE, if PHP extension is available, otherwise FALSE
+     */
+    public function isAvailable()
+    {
+        $isAvailable = true;
+        if (!extension_loaded($this->requiredPhpExtensions)) {
+            $prefix = PHP_SHLIB_SUFFIX === 'dll' ? 'php_' : '';
+            if (!(((bool)ini_get('enable_dl') && !(bool)ini_get('safe_mode')) && function_exists('dl') && dl($prefix . $this->requiredPhpExtensions . PHP_SHLIB_SUFFIX))) {
+                $isAvailable = false;
+            }
+        }
+        return $isAvailable;
+    }
+
+    /**
+     * Method parses an XML file.
+     *
+     * @param string $file GZIP stream resource
+     * @throws \TYPO3\CMS\Extensionmanager\Exception\ExtensionManagerException in case of XML parser errors
+     */
+    abstract public function parseXml($file);
+
+    /**
+     * Create required parser
+     */
+    abstract protected function createParser();
+}

typo3/sysext/extensionmanager/Classes/Utility/Parser/ExtensionXmlPullParser.php

@@ -0,0 +1,184 @@
+<?php
+namespace TYPO3\CMS\Extensionmanager\Utility\Parser;
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+/**
+ * Parser for TYPO3's extension.xml file.
+ *
+ * Depends on PHP ext/xmlreader which should be available
+ * with PHP >= 5.1.0.
+ * @internal This class is a specific ExtensionManager implementation and is not part of the Public TYPO3 API.
+ */
+class ExtensionXmlPullParser extends AbstractExtensionXmlParser
+{
+    /**
+     * Class constructor.
+     */
+    public function __construct()
+    {
+        $this->requiredPhpExtensions = 'xmlreader';
+    }
+
+    /**
+     * Create required parser
+     */
+    protected function createParser()
+    {
+        $this->objXml = new \XMLReader();
+    }
+
+    /**
+     * Method parses an extensions.xml file.
+     *
+     * @param string $file GZIP stream resource
+     * @throws \TYPO3\CMS\Extensionmanager\Exception\ExtensionManagerException in case of parser error
+     */
+    public function parseXml($file)
+    {
+        $this->createParser();
+        if (!(is_object($this->objXml) && get_class($this->objXml) === 'XMLReader')) {
+            throw new \TYPO3\CMS\Extensionmanager\Exception\ExtensionManagerException('Unable to create XML parser.', 1342640540);
+        }
+        if ($this->objXml->open($file, 'utf-8') === false) {
+            throw new \TYPO3\CMS\Extensionmanager\Exception\ExtensionManagerException(
+                sprintf('Unable to open file resource %s.', $file),
+                1476108651
+            );
+        }
+        while ($this->objXml->read()) {
+            if ($this->objXml->nodeType == \XMLReader::ELEMENT) {
+                $this->startElement($this->objXml->name);
+            } else {
+                if ($this->objXml->nodeType == \XMLReader::END_ELEMENT) {
+                    $this->endElement($this->objXml->name);
+                } else {
+                    continue;
+                }
+            }
+        }
+        $this->objXml->close();
+    }
+
+    /**
+     * Method is invoked when parser accesses start tag of an element.
+     *
+     * @param string $elementName element name at parser's current position
+     */
+    protected function startElement($elementName)
+    {
+        switch ($elementName) {
+            case 'extension':
+                $this->extensionKey = $this->objXml->getAttribute('extensionkey');
+                break;
+            case 'version':
+                $this->version = $this->objXml->getAttribute('version');
+                break;
+            case 'downloadcounter':
+                // downloadcounter could be a child node of
+                // extension or version
+                if ($this->version == null) {
+                    $this->extensionDownloadCounter = $this->getElementValue($elementName);
+                } else {
+                    $this->versionDownloadCounter = $this->getElementValue($elementName);
+                }
+                break;
+            case 'title':
+                $this->title = $this->getElementValue($elementName);
+                break;
+            case 'description':
+                $this->description = $this->getElementValue($elementName);
+                break;
+            case 'state':
+                $this->state = $this->getElementValue($elementName);
+                break;
+            case 'reviewstate':
+                $this->reviewstate = $this->getElementValue($elementName);
+                break;
+            case 'category':
+                $this->category = $this->getElementValue($elementName);
+                break;
+            case 'lastuploaddate':
+                $this->lastuploaddate = $this->getElementValue($elementName);
+                break;
+            case 'uploadcomment':
+                $this->uploadcomment = $this->getElementValue($elementName);
+                break;
+            case 'dependencies':
+                $this->dependencies = $this->convertDependencies($this->getElementValue($elementName));
+                break;
+            case 'authorname':
+                $this->authorname = $this->getElementValue($elementName);
+                break;
+            case 'authoremail':
+                $this->authoremail = $this->getElementValue($elementName);
+                break;
+            case 'authorcompany':
+                $this->authorcompany = $this->getElementValue($elementName);
+                break;
+            case 'ownerusername':
+                $this->ownerusername = $this->getElementValue($elementName);
+                break;
+            case 't3xfilemd5':
+                $this->t3xfilemd5 = $this->getElementValue($elementName);
+                break;
+        }
+    }
+
+    /**
+     * Method is invoked when parser accesses end tag of an element.
+     *
+     * @param string $elementName: element name at parser's current position
+     */
+    protected function endElement($elementName)
+    {
+        switch ($elementName) {
+            case 'extension':
+                $this->resetProperties(true);
+                break;
+            case 'version':
+                $this->notify();
+                $this->resetProperties();
+                break;
+        }
+    }
+
+    /**
+     * Method returns the value of an element at XMLReader's current
+     * position.
+     *
+     * Method will read until it finds the end of the given element.
+     * If element has no value, method returns NULL.
+     *
+     * @param string  $elementName: name of element to retrieve it's value from
+     * @return string  an element's value if it has a value, otherwise NULL
+     */
+    protected function getElementValue(&$elementName)
+    {
+        $value = null;
+        if (!$this->objXml->isEmptyElement) {
+            $value = '';
+            while ($this->objXml->read()) {
+                if ($this->objXml->nodeType == \XMLReader::TEXT || $this->objXml->nodeType == \XMLReader::CDATA || $this->objXml->nodeType == \XMLReader::WHITESPACE || $this->objXml->nodeType == \XMLReader::SIGNIFICANT_WHITESPACE) {
+                    $value .= $this->objXml->value;
+                } else {
+                    if ($this->objXml->nodeType == \XMLReader::END_ELEMENT && $this->objXml->name === $elementName) {
+                        break;
+                    }
+                }
+            }
+        }
+        return $value;
+    }
+}

typo3/sysext/extensionmanager/Classes/Utility/Parser/ExtensionXmlPushParser.php

@@ -0,0 +1,184 @@
+<?php
+namespace TYPO3\CMS\Extensionmanager\Utility\Parser;
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+/**
+ * Parser for TYPO3's extension.xml file.
+ *
+ * Depends on PHP ext/xml which should be available
+ * with PHP 4+. This is the parser used in TYPO3
+ * Core <= 4.3 (without the "collect all data in one
+ * array" behaviour).
+ * Notice: ext/xml has proven to be buggy with entities.
+ * Use at least PHP 5.2.9+ and libxml2 2.7.3+!
+ * @internal This class is a specific ExtensionManager implementation and is not part of the Public TYPO3 API.
+ */
+class ExtensionXmlPushParser extends AbstractExtensionXmlParser
+{
+    /**
+     * Keeps current data of element to process.
+     *
+     * @var string
+     */
+    protected $elementData = '';
+
+    /**
+     * Class constructor.
+     */
+    public function __construct()
+    {
+        $this->requiredPhpExtensions = 'xml';
+    }
+
+    /**
+     * Create required parser
+     */
+    protected function createParser()
+    {
+        $this->objXml = xml_parser_create();
+        xml_set_object($this->objXml, $this);
+    }
+
+    /**
+     * Method parses an extensions.xml file.
+     *
+     * @param string $file GZIP stream resource
+     * @throws \TYPO3\CMS\Extensionmanager\Exception\ExtensionManagerException in case of parse errors
+     */
+    public function parseXml($file)
+    {
+        $this->createParser();
+        if (!is_resource($this->objXml)) {
+            throw new \TYPO3\CMS\Extensionmanager\Exception\ExtensionManagerException('Unable to create XML parser.', 1342640663);
+        }
+        // Disables the functionality to allow external entities to be loaded when parsing the XML, must be kept
+        $previousValueOfEntityLoader = libxml_disable_entity_loader(true);
+        // keep original character case of XML document
+        xml_parser_set_option($this->objXml, XML_OPTION_CASE_FOLDING, false);
+        xml_parser_set_option($this->objXml, XML_OPTION_SKIP_WHITE, false);
+        xml_parser_set_option($this->objXml, XML_OPTION_TARGET_ENCODING, 'utf-8');
+        xml_set_element_handler($this->objXml, 'startElement', 'endElement');
+        xml_set_character_data_handler($this->objXml, 'characterData');
+        if (!($fp = fopen($file, 'r'))) {
+            throw new \TYPO3\CMS\Extensionmanager\Exception\ExtensionManagerException(sprintf('Unable to open file resource %s.', $file), 1342640689);
+        }
+        while ($data = fread($fp, 4096)) {
+            if (!xml_parse($this->objXml, $data, feof($fp))) {
+                throw new \TYPO3\CMS\Extensionmanager\Exception\ExtensionManagerException(sprintf('XML error %s in line %u of file resource %s.', xml_error_string(xml_get_error_code($this->objXml)), xml_get_current_line_number($this->objXml), $file), 1342640703);
+            }
+        }
+        libxml_disable_entity_loader($previousValueOfEntityLoader);
+        xml_parser_free($this->objXml);
+    }
+
+    /**
+     * Method is invoked when parser accesses start tag of an element.
+     *
+     * @param resource $parser parser resource
+     * @param string $elementName element name at parser's current position
+     * @param array $attrs array of an element's attributes if available
+     */
+    protected function startElement($parser, $elementName, $attrs)
+    {
+        switch ($elementName) {
+            case 'extension':
+                $this->extensionKey = $attrs['extensionkey'];
+                break;
+            case 'version':
+                $this->version = $attrs['version'];
+                break;
+            default:
+                $this->elementData = '';
+        }
+    }
+
+    /**
+     * Method is invoked when parser accesses end tag of an element.
+     *
+     * @param resource $parser parser resource
+     * @param string $elementName Element name at parser's current position
+     */
+    protected function endElement($parser, $elementName)
+    {
+        switch ($elementName) {
+            case 'extension':
+                $this->resetProperties(true);
+                break;
+            case 'version':
+                $this->notify();
+                $this->resetProperties();
+                break;
+            case 'downloadcounter':
+                // downloadcounter could be a child node of
+                // extension or version
+                if ($this->version == null) {
+                    $this->extensionDownloadCounter = $this->elementData;
+                } else {
+                    $this->versionDownloadCounter = $this->elementData;
+                }
+                break;
+            case 'title':
+                $this->title = $this->elementData;
+                break;
+            case 'description':
+                $this->description = $this->elementData;
+                break;
+            case 'state':
+                $this->state = $this->elementData;
+                break;
+            case 'reviewstate':
+                $this->reviewstate = $this->elementData;
+                break;
+            case 'category':
+                $this->category = $this->elementData;
+                break;
+            case 'lastuploaddate':
+                $this->lastuploaddate = $this->elementData;
+                break;
+            case 'uploadcomment':
+                $this->uploadcomment = $this->elementData;
+                break;
+            case 'dependencies':
+                $this->dependencies = $this->convertDependencies($this->elementData);
+                break;
+            case 'authorname':
+                $this->authorname = $this->elementData;
+                break;
+            case 'authoremail':
+                $this->authoremail = $this->elementData;
+                break;
+            case 'authorcompany':
+                $this->authorcompany = $this->elementData;
+                break;
+            case 'ownerusername':
+                $this->ownerusername = $this->elementData;
+                break;
+            case 't3xfilemd5':
+                $this->t3xfilemd5 = $this->elementData;
+                break;
+        }
+    }
+
+    /**
+     * Method is invoked when parser accesses any character other than elements.
+     *
+     * @param resource $parser parser resource
+     * @param string $data An element's value
+     */
+    protected function characterData($parser, $data)
+    {
+        $this->elementData .= $data;
+    }
+}

typo3/sysext/extensionmanager/Classes/Utility/Parser/MirrorXmlPullParser.php

@@ -0,0 +1,148 @@
+<?php
+namespace TYPO3\CMS\Extensionmanager\Utility\Parser;
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+/**
+ * Parser for TYPO3's mirrors.xml file.
+ *
+ * Depends on PHP ext/xmlreader which should be available
+ * with PHP >= 5.1.0.
+ * @internal This class is a specific ExtensionManager implementation and is not part of the Public TYPO3 API.
+ */
+class MirrorXmlPullParser extends AbstractMirrorXmlParser
+{
+    public function __construct()
+    {
+        $this->requiredPhpExtensions = 'xmlreader';
+    }
+
+    /**
+     * Create required parser
+     */
+    protected function createParser()
+    {
+        $this->objXml = new \XMLReader();
+    }
+
+    /**
+     * Method parses an extensions.xml file.
+     *
+     * @param string $file file resource, typically a stream
+     * @throws \TYPO3\CMS\Extensionmanager\Exception\ExtensionManagerException in case of XML parser errors
+     */
+    public function parseXml($file)
+    {
+        $this->createParser();
+        if (!(is_object($this->objXml) && get_class($this->objXml) === 'XMLReader')) {
+            throw new \TYPO3\CMS\Extensionmanager\Exception\ExtensionManagerException('Unable to create XML parser.', 1342640820);
+        }
+        if ($this->objXml->open($file, 'utf-8') === false) {
+            throw new \TYPO3\CMS\Extensionmanager\Exception\ExtensionManagerException(sprintf('Unable to open file resource %s.', $file), 1342640893);
+        }
+        while ($this->objXml->read()) {
+            if ($this->objXml->nodeType == \XMLReader::ELEMENT) {
+                $this->startElement($this->objXml->name);
+            } else {
+                if ($this->objXml->nodeType == \XMLReader::END_ELEMENT) {
+                    $this->endElement($this->objXml->name);
+                } else {
+                    continue;
+                }
+            }
+        }
+        $this->objXml->close();
+    }
+
+    /**
+     * Method is invoked when parser accesses start tag of an element.
+     *
+     * @param string $elementName element name at parser's current position
+     * @see endElement()
+     */
+    protected function startElement($elementName)
+    {
+        switch ($elementName) {
+            case 'title':
+                $this->title = $this->getElementValue($elementName);
+                break;
+            case 'host':
+                $this->host = $this->getElementValue($elementName);
+                break;
+            case 'path':
+                $this->path = $this->getElementValue($elementName);
+                break;
+            case 'country':
+                $this->country = $this->getElementValue($elementName);
+                break;
+            case 'name':
+                $this->sponsorname = $this->getElementValue($elementName);
+                break;
+            case 'link':
+                $this->sponsorlink = $this->getElementValue($elementName);
+                break;
+            case 'logo':
+                $this->sponsorlogo = $this->getElementValue($elementName);
+                break;
+            default:
+                // Do nothing
+        }
+    }
+
+    /**
+     * Method is invoked when parser accesses end tag of an element.
+     *
+     * @param string $elementName element name at parser's current position
+     * @see startElement()
+     */
+    protected function endElement($elementName)
+    {
+        switch ($elementName) {
+            case 'mirror':
+                $this->notify();
+                $this->resetProperties();
+                break;
+            default:
+                // Do nothing
+        }
+    }
+
+    /**
+     * Method returns the value of an element at XMLReader's current
+     * position.
+     *
+     * Method will read until it finds the end of the given element.
+     * If element has no value, method returns NULL.
+     *
+     * @param string &$elementName name of element to retrieve it's value from
+     * @return string an element's value if it has a value, otherwise NULL
+     */
+    protected function getElementValue(&$elementName)
+    {
+        $value = null;
+        if (!$this->objXml->isEmptyElement) {
+            $value = '';
+            while ($this->objXml->read()) {
+                if ($this->objXml->nodeType == \XMLReader::TEXT || $this->objXml->nodeType == \XMLReader::CDATA || $this->objXml->nodeType == \XMLReader::WHITESPACE || $this->objXml->nodeType == \XMLReader::SIGNIFICANT_WHITESPACE) {
+                    $value .= $this->objXml->value;
+                } else {
+                    if ($this->objXml->nodeType == \XMLReader::END_ELEMENT && $this->objXml->name === $elementName) {
+                        break;
+                    }
+                }
+            }
+        }
+        return $value;
+    }
+}

typo3/sysext/extensionmanager/Classes/Utility/Parser/MirrorXmlPushParser.php

@@ -0,0 +1,159 @@
+<?php
+namespace TYPO3\CMS\Extensionmanager\Utility\Parser;
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+/**
+ * Parser for TYPO3's mirrors.xml file.
+ *
+ * Depends on PHP ext/xml which should be available
+ * with PHP 4+. This is the parser used in TYPO3
+ * Core <= 4.3 (without the "collect all data in one
+ * array" behaviour).
+ * Notice: ext/xml has proven to be buggy with entities.
+ * Use at least PHP 5.2.9+ and libxml2 2.7.3+!
+ * @internal This class is a specific ExtensionManager implementation and is not part of the Public TYPO3 API.
+ */
+class MirrorXmlPushParser extends AbstractMirrorXmlParser
+{
+    /**
+     * @var string
+     */
+    protected $element;
+
+    /**
+     * Class constructor.
+     */
+    public function __construct()
+    {
+        $this->requiredPhpExtensions = 'xml';
+    }
+
+    /**
+     * Create required parser
+     */
+    protected function createParser()
+    {
+        $this->objXml = xml_parser_create();
+        xml_set_object($this->objXml, $this);
+    }
+
+    /**
+     * Method parses a mirror.xml file.
+     *
+     * @param string $file GZIP stream resource
+     * @throws \TYPO3\CMS\Extensionmanager\Exception\ExtensionManagerException in case of XML parser errors
+     */
+    public function parseXml($file)
+    {
+        $this->createParser();
+        if (!is_resource($this->objXml)) {
+            throw new \TYPO3\CMS\Extensionmanager\Exception\ExtensionManagerException('Unable to create XML parser.', 1342641009);
+        }
+        // Disables the functionality to allow external entities to be loaded when parsing the XML, must be kept
+        $previousValueOfEntityLoader = libxml_disable_entity_loader(true);
+        // keep original character case of XML document
+        xml_parser_set_option($this->objXml, XML_OPTION_CASE_FOLDING, false);
+        xml_parser_set_option($this->objXml, XML_OPTION_SKIP_WHITE, false);
+        xml_parser_set_option($this->objXml, XML_OPTION_TARGET_ENCODING, 'utf-8');
+        xml_set_element_handler($this->objXml, 'startElement', 'endElement');
+        xml_set_character_data_handler($this->objXml, 'characterData');
+        if (!($fp = fopen($file, 'r'))) {
+            throw new \TYPO3\CMS\Extensionmanager\Exception\ExtensionManagerException(sprintf('Unable to open file resource %s.', $file), 1342641010);
+        }
+        while ($data = fread($fp, 4096)) {
+            if (!xml_parse($this->objXml, $data, feof($fp))) {
+                throw new \TYPO3\CMS\Extensionmanager\Exception\ExtensionManagerException(sprintf('XML error %s in line %u of file resource %s.', xml_error_string(xml_get_error_code($this->objXml)), xml_get_current_line_number($this->objXml), $file), 1342641011);
+            }
+        }
+        libxml_disable_entity_loader($previousValueOfEntityLoader);
+        xml_parser_free($this->objXml);
+    }
+
+    /**
+     * Method is invoked when parser accesses start tag of an element.
+     *
+     * @param resource $parser parser resource
+     * @param string $elementName element name at parser's current position
+     * @param array $attrs array of an element's attributes if available
+     */
+    protected function startElement($parser, $elementName, $attrs)
+    {
+        switch ($elementName) {
+            default:
+                $this->element = $elementName;
+        }
+    }
+
+    /**
+     * Method is invoked when parser accesses end tag of an element.
+     * Although the first parameter seems unused, it needs to be there for
+     * adherence to the API of xml_set_element_handler
+     *
+     * @see xml_set_element_handler
+     * @param resource $parser parser resource
+     * @param string $elementName element name at parser's current position
+     */
+    protected function endElement($parser, $elementName)
+    {
+        switch ($elementName) {
+            case 'mirror':
+                $this->notify();
+                $this->resetProperties();
+                break;
+            default:
+                $this->element = null;
+        }
+    }
+
+    /**
+     * Method is invoked when parser accesses any character other than elements.
+     * Although the first parameter seems unused, it needs to be there for
+     * adherence to the API of xml_set_character_data_handler
+     *
+     * @see xml_set_character_data_handler
+     * @param resource $parser parser resource
+     * @param string $data an element's value
+     */
+    protected function characterData($parser, $data)
+    {
+        if (isset($this->element)) {
+            switch ($this->element) {
+                case 'title':
+                    $this->title = $data;
+                    break;
+                case 'host':
+                    $this->host = $data;
+                    break;
+                case 'path':
+                    $this->path = $data;
+                    break;
+                case 'country':
+                    $this->country = $data;
+                    break;
+                case 'name':
+                    $this->sponsorname = $data;
+                    break;
+                case 'link':
+                    $this->sponsorlink = $data;
+                    break;
+                case 'logo':
+                    $this->sponsorlogo = $data;
+                    break;
+                default:
+                    // Do nothing
+            }
+        }
+    }
+}

typo3/sysext/extensionmanager/Classes/Utility/Parser/XmlParserFactory.php

@@ -0,0 +1,78 @@
+<?php
+namespace TYPO3\CMS\Extensionmanager\Utility\Parser;
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+/**
+ * Factory for XML parsers.
+ * @internal This class is a specific ExtensionManager implementation and is not part of the Public TYPO3 API.
+ */
+class XmlParserFactory
+{
+    /**
+     * An array with instances of xml parsers.
+     * This member is set in the getParserInstance() function.
+     *
+     * @var array
+     */
+    protected static $instance = [];
+
+    /**
+     * Keeps array of all available parsers.
+     *
+     * @todo This would better be moved to a global configuration array like
+     * $GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']. (might require EM to be moved in a sysext)
+     *
+     * @var array
+     */
+    protected static $parsers = [
+        'extension' => [
+            \TYPO3\CMS\Extensionmanager\Utility\Parser\ExtensionXmlPushParser::class => 'ExtensionXmlPushParser.php',
+            \TYPO3\CMS\Extensionmanager\Utility\Parser\ExtensionXmlPullParser::class => 'ExtensionXmlPullParser.php',
+        ],
+        'mirror' => [
+            \TYPO3\CMS\Extensionmanager\Utility\Parser\MirrorXmlPushParser::class => 'MirrorXmlPushParser.php',
+            \TYPO3\CMS\Extensionmanager\Utility\Parser\MirrorXmlPullParser::class=> 'MirrorXmlPullParser.php',
+        ]
+    ];
+
+    /**
+     * Obtains a xml parser instance.
+     *
+     * This function will return an instance of a class that implements
+     * \TYPO3\CMS\Extensionmanager\Utility\Parser\AbstractExtensionXmlParser
+     *
+     * @param string $parserType type of parser, one of extension and mirror
+     * @param string $excludeClassNames (optional) comma-separated list of class names
+     * @return \TYPO3\CMS\Extensionmanager\Utility\Parser\AbstractExtensionXmlParser an instance of an extension.xml parser
+     */
+    public static function getParserInstance($parserType, $excludeClassNames = '')
+    {
+        if (!isset(self::$instance[$parserType]) || !is_object(self::$instance[$parserType]) || !empty($excludeClassNames)) {
+            // reset instance
+            self::$instance[$parserType] = ($objParser = null);
+            foreach (self::$parsers[$parserType] as $className => $file) {
+                if (!\TYPO3\CMS\Core\Utility\GeneralUtility::inList($excludeClassNames, $className)) {
+                    $objParser = \TYPO3\CMS\Core\Utility\GeneralUtility::makeInstance($className);
+                    if ($objParser->isAvailable()) {
+                        self::$instance[$parserType] = &$objParser;
+                        break;
+                    }
+                    $objParser = null;
+                }
+            }
+        }
+        return self::$instance[$parserType];
+    }
+}