Issues in mediawikiPlugin.class.php (master) - Issues in master - Enalean/tuleap - Measure and Improve Code Quality continuously with Scrutinizer

Issues (4873)

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Cross-Site Scripting
Cross-Site Scripting enables an attacker to inject code into the response of a web-request that is viewed by other users. It can for example be used to bypass access controls, or even to take over other users' accounts.
File Exposure
File Exposure allows an attacker to gain access to local files that he should not be able to access. These files can for example include database credentials, or other configuration files.
File Manipulation
File Manipulation enables an attacker to write custom data to files. This potentially leads to injection of arbitrary code on the server.
Object Injection
Object Injection enables an attacker to inject an object into PHP code, and can lead to arbitrary code execution, file exposure, or file manipulation attacks.
Code Injection
Code Injection enables an attacker to execute arbitrary code on the server.
Response Splitting
Response Splitting can be used to send arbitrary responses.
File Inclusion
File Inclusion enables an attacker to inject custom files into PHP's file loading mechanism, either explicitly passed to include, or for example via PHP's auto-loading mechanism.
Command Injection
Command Injection enables an attacker to inject a shell command that is execute with the privileges of the web-server. This can be used to expose sensitive data, or gain access of your server.
SQL Injection
SQL Injection enables an attacker to execute arbitrary SQL code on your database server gaining access to user data, or manipulating user data.
XPath Injection
XPath Injection enables an attacker to modify the parts of XML document that are read. If that XML document is for example used for authentication, this can lead to further vulnerabilities similar to SQL Injection.
LDAP Injection
LDAP Injection enables an attacker to inject LDAP statements potentially granting permission to run unauthorized queries, or modify content inside the LDAP tree.
Header Injection
Other Vulnerability
This category comprises other attack vectors such as manipulating the PHP runtime, loading custom extensions, freezing the runtime, or similar.
Regex Injection
Regex Injection enables an attacker to execute arbitrary code in your PHP process.
XML Injection
XML Injection enables an attacker to read files on your local filesystem including configuration files, or can be abused to freeze your web-server process.
Variable Injection
Variable Injection enables an attacker to overwrite program variables with custom data, and can lead to further vulnerabilities.
Unfortunately, the security analysis is currently not available for your project. If you are a non-commercial open-source project, please contact support to gain access.
mediawiki/include/mediawikiPlugin.class.php (7 issues)

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<?php
/**
 * MediaWikiPlugin Class
 *
 * Copyright 2000-2011, Fusionforge Team
 * Copyright 2012, Franck Villaume - TrivialDev
 * Copyright (c) Enalean SAS 2014. All Rights Reserved.
 *
 * This file is a part of Tuleap.
 *
 * Tuleap is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * Tuleap is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Tuleap; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

require_once 'common/plugin/Plugin.class.php';
require_once 'constants.php';

class MediaWikiPlugin extends Plugin {

    const SERVICE_SHORTNAME = 'plugin_mediawiki';

    function __construct ($id=0) {
            $this->Plugin($id) ;
            $this->name = "mediawiki" ;
            $this->text = "Mediawiki" ; // To show in the tabs, use...
            $this->_addHook("groupmenu") ;	// To put into the project tabs
            $this->_addHook("groupisactivecheckbox") ; // The "use ..." checkbox in editgroupinfo
            $this->_addHook("groupisactivecheckboxpost") ; //
            $this->_addHook("project_public_area");
            $this->_addHook("role_get");
            $this->_addHook("role_normalize");
            $this->_addHook("role_translate_strings");
            $this->_addHook("role_has_permission");
            $this->_addHook("role_get_setting");
            $this->_addHook("list_roles_by_permission");
            $this->_addHook("clone_project_from_template") ;
            $this->_addHook('group_delete');
            $this->_addHook('cssfile');
            $this->addHook(Event::SERVICE_ICON);
            $this->addHook(Event::SERVICES_ALLOWED_FOR_PROJECT);
            $this->addHook(Event::PROCCESS_SYSTEM_CHECK);

            $this->addHook('permission_get_name');
            $this->_addHook('service_is_used');
            $this->_addHook('register_project_creation');

            $this->_addHook(Event::SERVICE_REPLACE_TEMPLATE_NAME_IN_LINK);
            $this->_addHook(Event::RENAME_PROJECT, 'rename_project');
            $this->_addHook(Event::GET_SYSTEM_EVENT_CLASS, 'getSystemEventClass');
            $this->_addHook(Event::SYSTEM_EVENT_GET_TYPES_FOR_DEFAULT_QUEUE);

            //User permissions
            $this->_addHook('project_admin_remove_user');
            $this->_addHook('project_admin_change_user_permissions');
            $this->_addHook('SystemEvent_USER_RENAME', 'systemevent_user_rename');
            $this->_addHook('project_admin_ugroup_remove_user');
            $this->_addHook('project_admin_remove_user_from_project_ugroups');
            $this->_addHook('project_admin_ugroup_deletion');
            $this->_addHook(Event::HAS_USER_BEEN_DELEGATED_ACCESS, 'has_user_been_delegated_access');
            $this->addHook(Event::IS_SCRIPT_HANDLED_FOR_RESTRICTED);
            $this->addHook(Event::GET_SERVICES_ALLOWED_FOR_RESTRICTED);

            // Search
            $this->addHook(Event::LAYOUT_SEARCH_ENTRY);
            $this->addHook(Event::SEARCH_TYPES_PRESENTERS);
            $this->addHook(Event::SEARCH_TYPE);

            $this->_addHook('plugin_statistics_service_usage');

            $this->addHook(Event::SERVICE_CLASSNAMES);
            $this->addHook(Event::GET_PROJECTID_FROM_URL);

            // Stats plugin
            $this->addHook('plugin_statistics_disk_usage_collect_project');
            $this->addHook('plugin_statistics_disk_usage_service_label');
            $this->addHook('plugin_statistics_color');

            // Site admin link
            $this->_addHook('site_admin_option_hook', 'site_admin_option_hook', false);

            $this->addHook(Event::PROJECT_ACCESS_CHANGE);
            $this->addHook(Event::SITE_ACCESS_CHANGE);

            /**
             * HACK
             */
            require_once MEDIAWIKI_BASE_DIR.'/../../fusionforge_compat/include/fusionforge_compatPlugin.class.php';
            $ff_plugin = new fusionforge_compatPlugin();
            $ff_plugin->loaded();
    }

    public function getServiceShortname() {
        return self::SERVICE_SHORTNAME;
    }

    public function service_icon($params) {
        $params['list_of_icon_unicodes'][$this->getServiceShortname()] = '\e812';
    }

    /**
     * @see Plugin::getDependencies()
     */
    public function getDependencies() {
        return array('fusionforge_compat');
    }

        public function loaded() {
            parent::loaded();
            require_once 'plugins_utils.php';
            if(is_dir("/usr/share/mediawiki")){
                forge_define_config_item('src_path','mediawiki', "/usr/share/mediawiki");
                forge_define_config_item('mwdata_path', 'mediawiki', '$core/data_path/plugins/mediawiki');
                forge_define_config_item('projects_path', 'mediawiki', '$mediawiki/mwdata_path/projects');
                forge_define_config_item('master_path', 'mediawiki', '$mediawiki/mwdata_path/master');
                forge_define_config_item('enable_uploads', 'mediawiki', false);
                forge_set_config_item_bool('enable_uploads', 'mediawiki');
            }
        }

        public function layout_search_entry($params) {
            $project = $this->getProjectFromRequest();
            if ($this->isSearchEntryAvailable($project)) {
                $params['search_entries'][] = array(
                    'value'    => $this->name,
                    'label'    => $this->text,
                    'selected' => $this->isSearchEntrySelected($params['type_of_search']),
                );
                $params['hidden_fields'][] = array(
                    'name'  => 'group_id',
                    'value' => $project->getID()
                );
            }
        }

        /**
         * @see Event::SEARCH_TYPE
         */
        public function search_type($params) {
            $query   = $params['query'];
            $project = $query->getProject();

            if ($query->getTypeOfSearch() == $this->name && $this->isSearchEntryAvailable($project)) {
                if (! $project->isError()) {
                   util_return_to($this->getMediawikiSearchURI($project, $query->getWords()));
                }
            }
        }

        /**
         * @see Event::SEARCH_TYPES_PRESENTERS
         */
        public function search_types_presenters($params) {
            if ($this->isSearchEntryAvailable($params['project'])) {
                $params['project_presenters'][] = new Search_SearchTypePresenter(
                    $this->name,
                    $this->text,
                    array(),
                    $this->getMediawikiSearchURI($params['project'], $params['words'])
                );
            }
        }

    /**
     * @see Event::PROCCESS_SYSTEM_CHECK
     */
    public function proccess_system_check($params) {
        $this->getMediawikiMLEBExtensionManager()->activateMLEBForCompatibleProjects($params['logger']);
    }

        private function getMediawikiSearchURI(Project $project, $words) {
            return $this->getPluginPath().'/wiki/'. $project->getUnixName() .'/index.php?title=Special%3ASearch&search=' . urlencode($words) . '&go=Go';
        }

        private function isSearchEntryAvailable(Project $project = null) {
            if ($project && ! $project->isError()) {
                return $project->usesService(self::SERVICE_SHORTNAME);
            }
            return false;
        }

        private function isSearchEntrySelected($type_of_search) {
            return ($type_of_search == $this->name) || $this->isMediawikiUrl();
        }

        private function isMediawikiUrl() {
            return preg_match('%'.$this->getPluginPath().'/wiki/.*%', $_SERVER['REQUEST_URI']);
        }

        /**
         *
         * @return Project | null
         */
        private function getProjectFromRequest() {
            $matches = array();
            preg_match('%'.$this->getPluginPath().'/wiki/([^/]+)/.*%', $_SERVER['REQUEST_URI'], $matches);
            if (isset($matches[1])) {
                $project = ProjectManager::instance()->getProjectByUnixName($matches[1]);

                if ($project->isError()) {
                    $project = ProjectManager::instance()->getProject($matches[1]);
                }

                if (! $project->isError()) {
                    return $project;
                }
            }
            return null;
        }

        public function cssFile($params) {
            // Only show the stylesheet if we're actually in the Mediawiki pages.
            if (strpos($_SERVER['REQUEST_URI'], $this->getPluginPath()) === 0 ||
                strpos($_SERVER['REQUEST_URI'], '/widgets/') === 0) {
                echo '<link rel="stylesheet" type="text/css" href="/plugins/mediawiki/themes/default/css/style.css" />';
            }
        }

        public function showImage(Codendi_Request $request) {
            $project = $this->getProjectFromRequest();
            $user    = $request->getCurrentUser();

            if (! $project) {
                exit;

            }

            if ((! $project->isPublic() || $user->isRestricted())
                && ! $project->userIsMember()
                && ! $user->isSuperUser()
                && ! $this->doesUserHavePermission($user)
            ) {
                exit;

            }

            preg_match('%'.$this->getPluginPath().'/wiki/[^/]+/images(.*)%', $_SERVER['REQUEST_URI'], $matches);
            $file_location = $matches[1];

            $folder_location = '';
            if (is_dir('/var/lib/codendi/mediawiki/projects/' . $project->getUnixName())) {
                $folder_location = '/var/lib/codendi/mediawiki/projects/' . $project->getUnixName().'/images';
            } elseif (is_dir('/var/lib/codendi/mediawiki/projects/' . $project->getId())) {
                $folder_location = '/var/lib/codendi/mediawiki/projects/' . $project->getId().'/images';
            } else {
                exit;

            }

            $file = $folder_location.$file_location;
            if (! file_exists($file)) {
                exit;

            }

            $size = getimagesize($file);
            $fp   = fopen($file, 'r');

            if ($size and $fp) {
                header('Content-Type: '.$size['mime']);
                header('Content-Length: '.filesize($file));

                readfile($file);
                exit;

            }
        }

        function process() {
        echo '<h1>Mediawiki</h1>';
        echo $this->getPluginInfo()->getpropVal('answer');
class A
{
    public function foo() { }
}

class B extends A
{
    public function bar() { }
}

/**
 * @param A|B $x
 */
function someFunction($x)
{
    $x->foo(); // This call is fine as the method exists in A and B.
    $x->bar(); // This method only exists in B and might cause an error.
}
        }

        function &getPluginInfo() {
        if (!is_a($this->pluginInfo, 'MediaWikiPluginInfo')) {
            require_once 'MediaWikiPluginInfo.class.php';
            $this->pluginInfo = new MediaWikiPluginInfo($this);

        }
        return $this->pluginInfo;
    }

        public function service_replace_template_name_in_link($params) {
            $params['link'] = preg_replace(
                '#/plugins/mediawiki/wiki/'.preg_quote($params['template']['name']).'(/|$)#',
                '/plugins/mediawiki/wiki/'. $params['project']->getUnixName().'$1',
                $params['link']
            );
        }

    function CallHook ($hookname, &$params) {
        if (isset($params['group_id'])) {
            $group_id=$params['group_id'];
        } elseif (isset($params['group'])) {
            $group_id=$params['group'];
        } else {
            $group_id=null;
        }
        if ($hookname == "groupmenu") {
            $project = group_get_object($group_id);
            if (!$project || !is_object($project)) {
                return;
            }
            if ($project->isError()) {
                return;
            }
            if (!$project->isProject()) {
                return;
            }
            if ( $project->usesPlugin ( $this->name ) ) {
                $params['TITLES'][]=$this->text;
                $params['DIRS'][]=util_make_url('/plugins/mediawiki/wiki/'.$project->getUnixName().'/index.php');
                $params['ADMIN'][]='';
                $params['TOOLTIPS'][] = _('Mediawiki Space');
            }
            (($params['toptab'] == $this->name) ? $params['selected']=(count($params['TITLES'])-1) : '' );
        } elseif ($hookname == "groupisactivecheckbox") {
            //Check if the group is active
            // this code creates the checkbox in the project edit public info page to activate/deactivate the plugin
            $group = group_get_object($group_id);
            echo "<tr>";
            echo "<td>";
            echo ' <input type="checkbox" name="use_mediawikiplugin" value="1" ';
            // checked or unchecked?
            if ( $group->usesPlugin ( $this->name ) ) {
                echo "checked";
            }
            echo " /><br/>";
            echo "</td>";
            echo "<td>";
            echo "<strong>Use ".$this->text." Plugin</strong>";
            echo "</td>";
            echo "</tr>";
        } elseif ($hookname == "groupisactivecheckboxpost") {
            // this code actually activates/deactivates the plugin after the form was submitted in the project edit public info page
            $group = group_get_object($group_id);
            $use_mediawikiplugin = getStringFromRequest('use_mediawikiplugin');
            if ( $use_mediawikiplugin == 1 ) {
                $group->setPluginUse ( $this->name );
            } else {
                $group->setPluginUse ( $this->name, false );
            }
        } elseif ($hookname == "project_public_area") {
            $project = group_get_object($group_id);
            if (!$project || !is_object($project)) {
                return;
            }
            if ($project->isError()) {
                return;
            }
            if (!$project->isProject()) {
                return;
            }
            if ( $project->usesPlugin ( $this->name ) ) {
                echo '<div class="public-area-box">';
                print '<a href="'. util_make_url ('/plugins/mediawiki/wiki/'.$project->getUnixName().'/index.php').'">';
                print html_abs_image(util_make_url ('/plugins/mediawiki/wiki/'.$project->getUnixName().'/skins/fusionforge/wiki.png'),'20','20',array('alt'=>'Mediawiki'));
                print ' Mediawiki';
                print '</a>';
                echo '</div>';
            }
        } elseif ($hookname == "role_get") {
            $role =& $params['role'] ;

            // Read access
            $right = new PluginSpecificRoleSetting ($role,
                                'plugin_mediawiki_read') ;
            $right->SetAllowedValues (array ('0', '1')) ;
            $right->SetDefaultValues (array ('Admin' => '1',
                             'Senior Developer' => '1',
                             'Junior Developer' => '1',
                             'Doc Writer' => '1',
                             'Support Tech' => '1')) ;

            // Edit privileges
            $right = new PluginSpecificRoleSetting ($role,
                                'plugin_mediawiki_edit') ;
            $right->SetAllowedValues (array ('0', '1', '2', '3')) ;
            $right->SetDefaultValues (array ('Admin' => '3',
                             'Senior Developer' => '2',
                             'Junior Developer' => '1',
                             'Doc Writer' => '3',
                             'Support Tech' => '0')) ;

            // File upload privileges
            $right = new PluginSpecificRoleSetting ($role,
                                'plugin_mediawiki_upload') ;
            $right->SetAllowedValues (array ('0', '1', '2')) ;
            $right->SetDefaultValues (array ('Admin' => '2',
                             'Senior Developer' => '2',
                             'Junior Developer' => '1',
                             'Doc Writer' => '2',
                             'Support Tech' => '0')) ;

            // Administrative tasks
            $right = new PluginSpecificRoleSetting ($role,
                                'plugin_mediawiki_admin') ;
            $right->SetAllowedValues (array ('0', '1')) ;
            $right->SetDefaultValues (array ('Admin' => '1',
                             'Senior Developer' => '0',
                             'Junior Developer' => '0',
                             'Doc Writer' => '0',
                             'Support Tech' => '0')) ;

        } elseif ($hookname == "role_normalize") {
            $role =& $params['role'] ;
            $new_sa =& $params['new_sa'] ;
            $new_pa =& $params['new_pa'] ;

            $projects = $role->getLinkedProjects() ;
            foreach ($projects as $p) {
                $role->normalizePermsForSection ($new_pa, 'plugin_mediawiki_read', $p->getID()) ;
                $role->normalizePermsForSection ($new_pa, 'plugin_mediawiki_edit', $p->getID()) ;
                $role->normalizePermsForSection ($new_pa, 'plugin_mediawiki_upload', $p->getID()) ;
                $role->normalizePermsForSection ($new_pa, 'plugin_mediawiki_admin', $p->getID()) ;
            }
        } elseif ($hookname == "role_translate_strings") {
            $right = new PluginSpecificRoleSetting ($role,
                                   'plugin_mediawiki_read') ;
            $right->setDescription (_('Mediawiki read access')) ;
            $right->setValueDescriptions (array ('0' => _('No reading'),
                                 '1' => _('Read access'))) ;

            $right = new PluginSpecificRoleSetting ($role,
                                   'plugin_mediawiki_edit') ;
            $right->setDescription (_('Mediawiki write access')) ;
            $right->setValueDescriptions (array ('0' => _('No editing'),
                                 '1' => _('Edit existing pages only'),
                                 '2' => _('Edit and create pages'),
                                 '3' => _('Edit, create, move, delete pages'))) ;

            $right = new PluginSpecificRoleSetting ($role,
                                   'plugin_mediawiki_upload') ;
            $right->setDescription (_('Mediawiki file upload')) ;
            $right->setValueDescriptions (array ('0' => _('No uploading'),
                                 '1' => _('Upload permitted'),
                                 '2' => _('Upload and re-upload'))) ;

            $right = new PluginSpecificRoleSetting ($role,
                                   'plugin_mediawiki_admin') ;
            $right->setDescription (_('Mediawiki administrative tasks')) ;
            $right->setValueDescriptions (array ('0' => _('No administrative access'),
                                 '1' => _('Edit interface, import XML dumps'))) ;
        } elseif ($hookname == "role_get_setting") {
            $role = $params['role'] ;
            $reference = $params['reference'] ;
            $value = $params['value'] ;

            switch ($params['section']) {
            case 'plugin_mediawiki_read':
                if ($role->hasPermission('project_admin', $reference)) {
                    $params['result'] = 1 ;
                } else {
                    $params['result'] =  $value ;
                }
                break ;
            case 'plugin_mediawiki_edit':
                if ($role->hasPermission('project_admin', $reference)) {
                    $params['result'] = 3 ;
                } else {
                    $params['result'] =  $value ;
                }
                break ;
            case 'plugin_mediawiki_upload':
                if ($role->hasPermission('project_admin', $reference)) {
                    $params['result'] = 2 ;
                } else {
                    $params['result'] =  $value ;
                }
                break ;
            case 'plugin_mediawiki_admin':
                if ($role->hasPermission('project_admin', $reference)) {
                    $params['result'] = 1 ;
                } else {
                    $params['result'] =  $value ;
                }
                break ;
            }
        } elseif ($hookname == "role_has_permission") {
            $value = $params['value'];
            switch ($params['section']) {
            case 'plugin_mediawiki_read':
                switch ($params['action']) {
                case 'read':
                default:
                    $params['result'] |= ($value >= 1) ;
                    break ;
                }
                break ;
            case 'plugin_mediawiki_edit':
                switch ($params['action']) {
                case 'editexisting':
                    $params['result'] |= ($value >= 1) ;
                    break ;
                case 'editnew':
                    $params['result'] |= ($value >= 2) ;
                    break ;
                case 'editmove':
                    $params['result'] |= ($value >= 3) ;
                    break ;
                }
                break ;
            case 'plugin_mediawiki_upload':
                switch ($params['action']) {
                case 'upload':
                    $params['result'] |= ($value >= 1) ;
                    break ;
                case 'reupload':
                    $params['result'] |= ($value >= 2) ;
                    break ;
                }
                break ;
            case 'plugin_mediawiki_admin':
                switch ($params['action']) {
                case 'admin':
                default:
                    $params['result'] |= ($value >= 1) ;
                    break ;
                }
                break ;
            }
        } elseif ($hookname == "list_roles_by_permission") {
            switch ($params['section']) {
            case 'plugin_mediawiki_read':
                switch ($params['action']) {
                case 'read':
                default:
                    $params['qpa'] = db_construct_qpa ($params['qpa'], ' AND perm_val >= 1') ;
                    break ;
                }
                break ;
            case 'plugin_mediawiki_edit':
                switch ($params['action']) {
                case 'editexisting':
                    $params['qpa'] = db_construct_qpa ($params['qpa'], ' AND perm_val >= 1') ;
                    break ;
                case 'editnew':
                    $params['qpa'] = db_construct_qpa ($params['qpa'], ' AND perm_val >= 2') ;
                    break ;
                case 'editmove':
                    $params['qpa'] = db_construct_qpa ($params['qpa'], ' AND perm_val >= 3') ;
                    break ;
                }
                break ;
            case 'plugin_mediawiki_upload':
                switch ($params['action']) {
                case 'upload':
                    $params['qpa'] = db_construct_qpa ($params['qpa'], ' AND perm_val >= 1') ;
                    break ;
                case 'reupload':
                    $params['qpa'] = db_construct_qpa ($params['qpa'], ' AND perm_val >= 2') ;
                    break ;
                }
                break ;
            case 'plugin_mediawiki_admin':
                switch ($params['action']) {
                case 'admin':
                default:
                    $params['qpa'] = db_construct_qpa ($params['qpa'], ' AND perm_val >= 1') ;
                    break ;
                }
                break ;
            }
        } elseif ($hookname == "clone_project_from_template") {
            $template = $params['template'] ;
            $project = $params['project'] ;
            $id_mappings = $params['id_mappings'] ;

            $sections = array ('plugin_mediawiki_read', 'plugin_mediawiki_edit', 'plugin_mediawiki_upload', 'plugin_mediawiki_admin') ;

            foreach ($template->getRoles() as $oldrole) {
                $newrole = RBACEngine::getInstance()->getRoleById ($id_mappings['role'][$oldrole->getID()]) ;
                $oldsettings = $oldrole->getSettingsForProject ($template) ;

                foreach ($sections as $section) {
                    if (isset ($oldsettings[$section][$template->getID()])) {
                        $newrole->setSetting ($section, $project->getID(), $oldsettings[$section][$template->getID()]) ;
                    }
                }
            }
        } elseif ($hookname == 'group_delete') {
            $projectId = $params['group_id'];
            $projectObject = group_get_object($projectId);
            if ($projectObject->usesPlugin($this->name)) {
                //delete the files and db schema
                $schema = 'plugin_mediawiki_'.$projectObject->getUnixName();
                // Sanitize schema name
                $schema = strtr($schema, "-", "_");
                db_query_params('drop schema $1 cascade', array($schema));
                exec('/bin/rm -rf '.forge_get_config('projects_path', 'mediawiki').'/'.$projectObject->getUnixName());
            }
        }
    }

    public function register_project_creation($params) {
        if ($this->serviceIsUsedInTemplate($params['template_id'])) {
            $mediawiki_instantiater = $this->getInstantiater($params['group_id']);
            if ($mediawiki_instantiater) {
                $mediawiki_instantiater->instantiateFromTemplate($params['ugroupsMapping']);
            }
        }
    }

    public function has_user_been_delegated_access($params) {
        if (isset($_SERVER['REQUEST_URI']) && strpos($_SERVER['REQUEST_URI'], $this->getPluginPath()) === 0) {

            /**
             * Only change the access rights to the affirmative.
             * Otherwise, we could overwrite a "true" value set by another plugin.
             */
            if ($this->doesUserHavePermission($params['user'])) {
                $params['can_access'] = true;
            }
        }
    }

    private function doesUserHavePermission(PFUser $user) {
        $forge_user_manager = $this->getForgeUserGroupPermissionsManager();

        return $forge_user_manager->doesUserHavePermission(
            $user,
            new User_ForgeUserGroupPermission_MediawikiAdminAllProjects()
        );
    }

    /**
     * @return User_ForgeUserGroupPermissionsManager
     */
    private function getForgeUserGroupPermissionsManager() {
        return new User_ForgeUserGroupPermissionsManager(
            new User_ForgeUserGroupPermissionsDao()
        );
    }

    /**
     * @see Event::IS_SCRIPT_HANDLED_FOR_RESTRICTED
     */
    public function is_script_handled_for_restricted($params) {
        $uri = $params['uri'];
        if (strpos($uri, $this->getPluginPath()) === 0) {
            $params['allow_restricted'] = true;
        }
    }

    /**
     * @see Event::GET_SERVICES_ALLOWED_FOR_RESTRICTED
     */
    public function get_services_allowed_for_restricted($params) {
        $params['allowed_services'][] = $this->getServiceShortname();
    }

    private function serviceIsUsedInTemplate($project_id) {
        $project_manager = ProjectManager::instance();
        $project         = $project_manager->getProject($project_id);

        return $project->usesService(self::SERVICE_SHORTNAME);
    }

    public function service_is_used($params) {
        if ($params['shortname'] == 'plugin_mediawiki' && $params['is_used']) {
            $mediawiki_instantiater = $this->getInstantiater($params['group_id']);
            if ($mediawiki_instantiater) {
                $mediawiki_instantiater->instantiate();
            }
        }
    }

    private function getInstantiater($group_id) {
        $project_manager = ProjectManager::instance();
        $project = $project_manager->getProject($group_id);

        if (! $project instanceof Project || $project->isError()) {
            return;
        }

        include dirname(__FILE__) .'/MediawikiInstantiater.class.php';

        return new MediaWikiInstantiater(
            $project,
            $this->getMediawikiManager(),
            $this->getMediawikiLanguageManager(),
            $this->getMediawikiVersionManager(),
            $this->getMediawikiMLEBExtensionManager()
        );
    }

    private function getMediawikiLanguageManager() {
        require_once 'MediawikiLanguageManager.php';
        require_once 'MediawikiLanguageDao.php';

        return new MediawikiLanguageManager(new MediawikiLanguageDao());
    }

    public function plugin_statistics_service_usage($params) {
        require_once 'MediawikiDao.class.php';

        $dao             = new MediawikiDao();
        $project_manager = ProjectManager::instance();
        $start_date      = $params['start_date'];
        $end_date        = $params['end_date'];

        $number_of_page                   = array();
        $number_of_page_between_two_dates = array();
        $number_of_page_since_a_date      = array();
        foreach($project_manager->getProjectsByStatus(Project::STATUS_ACTIVE) as $project) {
            if ($project->usesService('plugin_mediawiki')) {
                $number_of_page[] = $dao->getMediawikiPagesNumberOfAProject($project);
                $number_of_page_between_two_dates[] = $dao->getModifiedMediawikiPagesNumberOfAProjectBetweenStartDateAndEndDate($project, $start_date, $end_date);
                $number_of_page_since_a_date[] = $dao->getCreatedPagesNumberSinceStartDate($project, $start_date);
            }
        }

        $params['csv_exporter']->buildDatas($number_of_page, "Mediawiki Pages");
        $params['csv_exporter']->buildDatas($number_of_page_between_two_dates, "Modified Mediawiki pages");
        $params['csv_exporter']->buildDatas($number_of_page_since_a_date, "Number of created Mediawiki pages since start date");
    }

    public function project_admin_ugroup_deletion($params) {
        $project = $this->getProjectFromParams($params);
        $dao     = $this->getDao();

        if ($project->usesService(MediaWikiPlugin::SERVICE_SHORTNAME)) {
            $dao->deleteUserGroup($project->getID(), $params['ugroup_id']);
            $dao->resetUserGroups($project);
        }
    }

    public function project_admin_remove_user($params) {
        $this->updateUserGroupMapping($params);
    }

    public function project_admin_ugroup_remove_user($params) {
        $this->updateUserGroupMapping($params);
    }

    public function project_admin_change_user_permissions($params) {
        $this->updateUserGroupMapping($params);
    }

    public function project_admin_remove_user_from_project_ugroups($params) {
        $this->updateUserGroupMapping($params);
    }

    private function updateUserGroupMapping($params) {
        $user    = $this->getUserFromParams($params);
        $project = $this->getProjectFromParams($params);
        $dao     = $this->getDao();

        if ($project->usesService(MediaWikiPlugin::SERVICE_SHORTNAME)) {
            $dao->resetUserGroupsForUser($user, $project);
        }
    }

    public function systemevent_user_rename($params) {
        $user            = $params['user'];
        $projects        = ProjectManager::instance()->getAllProjectsButDeleted();
        foreach ($projects as $project) {
            if ($project->usesService(MediaWikiPlugin::SERVICE_SHORTNAME)) {
                $this->getDao()->renameUser($project, $params['old_user_name'], $user->getUnixName());
            }
        }
    }

    private function getUserFromParams($params) {
        $user_id  = $params['user_id'];

        return UserManager::instance()->getUserById($user_id);
    }

    private function getProjectFromParams($params) {
        $group_id = $params['group_id'];

        return ProjectManager::instance()->getProject($group_id);
    }

    private function getDao() {
        return new MediawikiDao();
    }

    /**
     * @return MediawikiManager
     */
    private function getMediawikiManager() {
        include_once 'MediawikiManager.class.php';

        return new MediawikiManager($this->getDao());
    }

    public function service_classnames(array $params) {
        include_once 'ServiceMediawiki.class.php';
        $params['classnames']['plugin_mediawiki'] = 'ServiceMediawiki';
    }

    public function rename_project($params) {
        $project         = $params['project'];
        $project_manager = ProjectManager::instance();
        $new_link        = '/plugins/mediawiki/wiki/'. $params['new_name'];

        if (! $project_manager->renameProjectPluginServiceLink($project->getID(), self::SERVICE_SHORTNAME, $new_link)) {
            $params['success'] = false;
            return;
        }

        $this->updateMediawikiDirectory($project);
        $this->clearMediawikiCache($project);
    }

    private function updateMediawikiDirectory(Project $project) {
        $logger         = new BackendLogger();
        $project_id_dir = forge_get_config('projects_path', 'mediawiki') . "/". $project->getID() ;

        if (is_dir($project_id_dir)) {
            return true;
        }

        $project_name_dir = forge_get_config('projects_path', 'mediawiki') . "/" . $project->getUnixName();
        if (is_dir($project_name_dir)) {
            exec("mv $project_name_dir $project_id_dir");
            return true;
        }

        $logger->error('Project Rename: Can\'t find mediawiki directory for project: '.$project->getID());
        return false;
    }

    private function clearMediawikiCache(Project $project) {
        $schema = $this->getDao()->getMediawikiDatabaseName($project, false);
        $logger = new BackendLogger();

        if ($schema) {
            $delete = $this->getDao()->clearPageCacheForSchema($schema);
            if (! $delete) {
                $logger->error('Project Clear cache: Can\'t delete mediawiki cache for schema: '.$schema);
            }
        } else  {
            $logger->error('Project Clear cache: Can\'t find mediawiki db for project: '.$project->getID());
        }
    }

    public function get_projectid_from_url($params) {
        $url = $params['url'];

        if (strpos($url,'/plugins/mediawiki/wiki/') === 0) {
            $pieces       = explode("/", $url);
            $project_name = $pieces[4];

            $dao          = $params['project_dao'];
            $dao_results  = $dao->searchByUnixGroupName($project_name);
            if ($dao_results->rowCount() < 1) {
                // project does not exist
                return false;
            }

            $project_data         = $dao_results->getRow();
            $params['project_id'] = $project_data['group_id'];
        }
    }

    public function plugin_statistics_disk_usage_collect_project($params) {
        $row     = $params['project_row'];
        $project = ProjectManager::instance()->getProject($row['group_id']);

        $project_for_parth = $this->getMediawikiManager()->instanceUsesProjectID($project) ?
            $row['group_id'] : $row['unix_group_name'];

        $path = $GLOBALS['sys_data_dir']. '/mediawiki/projects/'. $project_for_parth;
        $size = $params['DiskUsageManager']->getDirSize($path);

        $params['DiskUsageManager']->_getDao()->addGroup(
            $row['group_id'],
            self::SERVICE_SHORTNAME,
            $size,
            $_SERVER['REQUEST_TIME']
        );
    }

    public function plugin_statistics_disk_usage_service_label($params) {
        $params['services'][self::SERVICE_SHORTNAME] = 'Mediawiki';
    }

    public function plugin_statistics_color($params) {
        if ($params['service'] == self::SERVICE_SHORTNAME) {
            $params['color'] = 'lightsalmon';
        }
    }

    public function site_admin_option_hook() {
        echo '<li><a href="'.$this->getPluginPath().'/forge_admin?action=site_index'.'">Mediawiki</a></li>';
    }

    public function system_event_get_types_for_default_queue(array &$params) {
        require_once 'events/SytemEvent_MEDIAWIKI_SWITCH_TO_123.class.php';

        $params['types'] = array_merge($params['types'], array(
            SystemEvent_MEDIAWIKI_SWITCH_TO_123::NAME
        ));
    }

    public function getSystemEventClass($params) {
        require_once 'events/SytemEvent_MEDIAWIKI_SWITCH_TO_123.class.php';

        switch($params['type']) {
            case SystemEvent_MEDIAWIKI_SWITCH_TO_123::NAME:
                $params['class'] = 'SystemEvent_MEDIAWIKI_SWITCH_TO_123';
                $params['dependencies'] = array(
                    $this->getMediawikiMigrator(),
                    $this->getProjectManager(),
                    $this->getMediawikiVersionManager(),
                    $this->getMediawikiMLEBExtensionManager()
                );
                break;
            default:
                break;
        }
    }

    private function getMediawikiMigrator() {
        require_once 'Migration/MediawikiMigrator.php';

        return new Mediawiki_Migration_MediawikiMigrator();
    }

    private function getProjectManager() {
        return ProjectManager::instance();
    }

    public function permission_get_name($params) {
        if (!$params['name']) {
            switch($params['permission_type']) {
                case MediawikiManager::READ_ACCESS:
                    $params['name'] = 'Read';
                    break;
                case MediawikiManager::WRITE_ACCESS:
                    $params['name'] = 'Write';
                    break;
                default:
                    break;
            }
        }
    }

    /**
     * @see Event::PROJECT_ACCESS_CHANGE
     */
    public function project_access_change($params) {
        $project = ProjectManager::instance()->getProject($params['project_id']);

        $this->getMediawikiManager()->updateAccessControlInProjectChangeContext(
            $project,
            $params['old_access'],
            $params['access']
        );
    }

    /**
     * @see Event::SITE_ACCESS_CHANGE
     */
    public function site_access_change($params) {
        $this->getMediawikiManager()->updateSiteAccess($params['old_value']);
    }

    private function getMediawikiVersionManager() {
        require_once 'MediawikiVersionManager.php';
        require_once 'MediawikiVersionDao.php';

        return new MediawikiVersionManager(new MediawikiVersionDao());
    }

    /**
     * @return MediawikiMLEBExtensionManager
     */
    private function getMediawikiMLEBExtensionManager() {
        require_once 'MediawikiMLEBExtensionManager.php';

        return new MediawikiMLEBExtensionManager(
            $this->getMediawikiMigrator(),
            $this->getMediawikiMLEBExtensionDao(),
            $this->getProjectManager(),
            $this->getMediawikiVersionManager(),
            $this->getMediawikiLanguageManager()
        );
    }

    private function getMediawikiMLEBExtensionDao() {
        require_once 'MediawikiMLEBExtensionDao.php';

        return new MediawikiMLEBExtensionDao();
    }

}

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