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File: attach.php
<?php if (!defined('VB_ENTRY')) die('Access denied.'); /*========================================================================*\ || ###################################################################### || || # vBulletin 5.3.4 || # ------------------------------------------------------------------ # || || # Copyright 2000-2017 vBulletin Solutions Inc. All Rights Reserved. # || || # This file may not be redistributed in whole or significant part. # || || # ----------------- VBULLETIN IS NOT FREE SOFTWARE ----------------- # || || # http://www.vbulletin.com | http://www.vbulletin.com/license.html # || || ###################################################################### || \*========================================================================*/ /** * vB_Api_Content_Attach * * @package vBApi * @access public */ class vB_Api_Content_Attach extends vB_Api_Content { /** * @deprecated Appears to be unused */ protected $types; /** * @deprecated Appears to be unused */ protected $extension_map; /** * @var string Override in client- the text name */ protected $contenttype = 'vBForum_Attach'; /** * @var string The table for the type-specific data. */ protected $tablename = 'attach'; /** * @var int Control whether this record will display on a channel page listing */ protected $inlist = 0; /** * @var object Image processing functions */ protected $imageHandler; /** * Constructor */ protected function __construct() { parent::__construct(); $this->library = vB_Library::instance('Content_Attach'); $this->imageHandler = vB_Image::instance(); } public function getGenericChannelAttachmentPermissions($nodeid) { $nodeid = intval($nodeid); /* $this->checkPermission() only checks that the userid is there. Which is not necessarily correct. For ex. channel permissions might allow attachment createpermissions for non-registered usergroup. It also doesn't check canpostattachment (which is planned to be removed in favor of createpermissions) nor the vbforum_attach createpermissions. Frankly, perm checking for attachments is all over the place and is a mess. The most comprehensive check seems to be vB_Api_Content_Text::checkAttachmentPermissions(), which checks the createpermission on the channel, as well as quota limits vs. currently added attachments on that node, etc. */ $userContext = vB::getUserContext(); $userid = $userContext->fetchUserId(); $channelContentTypeID = vB_Types::instance()->getContentTypeID('vBForum_Channel'); $node = vB_Library::instance('node')->getNodeBare($nodeid); if ($node['contenttypeid'] == $channelContentTypeID) { $parentid = $node['nodeid']; } else { $starter = vB_Library::instance('node')->getNodeBare($node['starter']); $parentid = $starter['parentid']; } // if we couldn't find the parentid (e.g. nodeid was just bad), just error out. if (empty($parentid)) { throw new vB_Exception_Api('invalid_request'); } /* canpostattachment will likely be removed in the future. Related JIRAs: VBV-12673 VBV-13034 */ $canCreateAttach = $userContext->getChannelPermission('createpermissions', 'vbforum_attach', $parentid); $canPostAttachment = $userContext->getChannelPermission('forumpermissions', 'canpostattachment', $parentid); return array( 'createpermissions' => $canCreateAttach, 'canadd' => $canAdd, ); } /** * This validates that a user can upload attachments. Currently that's just verifying that they are logged in. * * @param int User ID */ protected function checkPermission($userid) { if (!intval($userid)) { if (isset($_FILES['tmp_name'])) { @unlink($_FILES['tmp_name']); } throw new vB_Exception_Api('session_timed_out_login'); } } /** * Fetch image information about an attachment * * @param int Node ID * @param string Thumbnail version/size requested (SIZE_* constanst in vB_Api_Filedata) * @param bool Should we include the image content * * @return mixed Array of data, includes: * filesize, dateline, htmltype, filename, extension, and filedataid */ public function fetchImage($id, $type = vB_Api_Filedata::SIZE_FULL, $includeData = true) { if (empty($id) OR !intval($id)) { throw new vB_Exception_Api('invalid_request'); } $type = vB_Api::instanceInternal('filedata')->sanitizeFiletype($type); $userContext = vB::getUserContext(); $attachdata = vB::getDbAssertor()->getRow('vBForum:fetchAttachForLoad', array('nodeid' => $id)); if(!$attachdata) { throw new vB_Exception_Api('invalid_request'); } $extension = $attachdata['extension']; /* * This might get a bit confusing. Some files, like PDFs, might have an image thumbnail. * In such a case, we treat the thumbnail as an image in terms of permissions. To change * this policy, remove $type. */ $isImg = $this->imageHandler->isImageExtension($extension, $type); if ( (!$isImg AND !$userContext->getChannelPermission('forumpermissions', 'cangetattachment', $id)) OR ($isImg AND !$userContext->getChannelPermission('forumpermissions2', 'cangetimgattachment', $id)) ) { if ($attachdata['userid'] != $userContext->fetchUserId()) { throw new vB_Exception_Api('no_view_permissions'); } } $parent = vB_Api::instanceInternal('node')->getNode($attachdata['parentid']); $contentLib = vB_Library_Content::getContentLib($parent['contenttypeid']); $valid = $contentLib->validate($parent, vB_Library_Content::ACTION_VIEW, $parent['nodeid'], array($parent['nodeid'] => $parent)); //allow viewing attachments for nodes set to public preview even if the node itself //can't be viewed. if (!$valid AND empty($parent['public_preview'])) { throw new vB_Exception_Api('no_view_permissions'); } //If the record belongs to this user, or if this user can view attachments //in this section, then this is O.K. if (!empty($attachdata) && $attachdata['filedataid']) { $params = array('filedataid' => $attachdata['filedataid'], 'type' => $type); $record = vB::getDbAssertor()->getRow('vBForum:getFiledataContent', $params); } if (empty($record)) { return false; } return vB_Image::instance()->loadFileData($record, $type, $includeData); } /** * Sets the main logo for a file * * @param int Filedataid * @param string Which style (or styles) to update. 'current', 'default', or 'all'. see switch case in implementation for details. * * @return mixed Array of data, includes error message or an int- normally 1. */ public function setLogo($filedataid, $styleselection = 'current') { $userContext = vB::getUserContext(); if (!intval($filedataid)) { throw new Exception('invalid_data'); } $this->checkHasAdminPermission('canadminstyles'); //validdate that the filedata record exists; $assertor = vB::getDbAssertor(); $check = $assertor->getRow('filedata', array(vB_dB_Query::TYPE_KEY => vB_dB_Query::QUERY_SELECT, 'filedataid' => $filedataid)); if (empty($check) OR !empty($check['errors'])) { throw new Exception('invalid_data'); } $styleVar = vB_Api::instanceInternal('Stylevar'); $var = $styleVar->get("titleimage"); $curLogoId = intval(substr($var['titleimage']['url'], strrpos($var['titleimage']['url'], '=')+1)); if ($curLogoId > 0) { $assertor->assertQuery('decrementFiledataRefcount', array('filedataid' => $curLogoId)); } $assertor->assertQuery('incrementFiledataRefcountAndMakePublic', array('filedataid' => $filedataid)); $userinfo = vB::getCurrentSession()->fetch_userinfo(); $stylevarid = 'titleimage'; $updateStyleids = array(); switch ($styleselection) { case 'all': /* Previously, this set the logo for only the top level styles (parentid = -1) and just removed titleimage stylevar from descendants. Since each theme is not a top level style, and has a default titleimage that gets overwritten by each upgrade, this will not work. Instead, we should set the titleimage for *all* styles, so that a read-able child of a theme will get the logo, and will not be accidentally removed by an upgrade. Note, this will also set the title image for a read/write-protected theme, but at the moment we don't care, as we have superficial blocks to prevent admins or users from setting those themes as a default style, so their title image being overwritten wouldn't display on frontend. Note, this might be undesired, because if there's a deep descendant line, and they want to reset the logo for that whole line, they'd have to go in and individually change each style descendant. A few possible ways to get around this: A) Only update styles that has a title image, and make sure that every theme's immediate child (the readable/writable one) has its own titleimage B) Keep track of parents, and only insert a title image for a style if parent is read-protected C) Add another $styleselection option like "current style subtree" that'll just set the titleimage for all styleids under the current. * */ $styles = vB_Library::instance('Style')->fetchStyles(false, false); foreach($styles AS $style) { $updateStyleids[] = $style['styleid']; } break; case 'default': // Set the logo for the default style. $updateStyleids = array(vB::getDatastore()->getOption('styleid')); break; case 'current': default: // Set the logo for the current style being used by the user. $currentStyleid = vB::getCurrentSession()->get('styleid'); if (empty($currentStyleid) OR $currentStyleid < 1) { // In the event there is no styleid passed or we try to update the master, // update the user's selected style instead. $updateStyleids = array($userinfo['styleid']); } else { $updateStyleids = array($currentStyleid); } break; } foreach($updateStyleids AS $styleid) { //Can the stylecache from above be used for this? And can we just switch out the styleid for every style? $existing = $assertor->getRow('vBForum:stylevar', array( 'styleid' => $styleid, 'stylevarid' => $stylevarid )); $dm = new vB_DataManager_StyleVarImage(); if (!empty($existing)) { $dm->set_existing(array( 'styleid' => $styleid, 'stylevarid' => $stylevarid )); } else { $dm->set('styleid', $styleid); $dm->set('stylevarid', $stylevarid); } $value = array('url' => 'filedata/fetch?filedataid=' . $filedataid); $dm->set('value', $value); $dm->set('dateline',vB::getRequest()->getTimeNow()); $dm->set('username', $userinfo['username']); $dm->save(); if ($dm->has_errors(false)) { throw $dm->get_exception(); } } vB_Library::instance('Style')->buildStyleDatastore(); return true; } /** * Uploads a file * * @param array Data from $_FILES * * @return array Array of data, which will include either error info or a filedataid */ public function upload($file) { return $this->uploadAttachment($file); } /** * Uploads a photo. Only use for images. * * @param array Data from $_FILES * * @return array Array of data, which will include either error info or a filedataid */ public function uploadPhoto($file) { return $this->uploadAttachment($file, true, true); } /** * Uploads a file without dimension check - to be cropped later. Only use for images. * * @param array Data from $_FILES * * @return array Array of data, which will include either error info or a filedataid */ public function uploadProfilePicture($file) { return $this->uploadAttachment($file, false, true); } /** * Uploads an attachment * * For parameters & return data @see vB_Library_Content_Attach::uploadAttachment() * * @access protected * * @param array $file - Data from $_FILES * @param bool $checkperms - Whether or not to check permissions * @param bool $imageOnly - Whether or not this is an image only attachment * * @return array Array of attachment data @see vB_Library_Content_Attach::saveUpload() */ protected function uploadAttachment($file, $checkperms = true, $imageOnly = false) { //Only logged-in-users can upload files $userid = vB::getCurrentSession()->get('userid'); $this->checkPermission($userid); return $this->library->uploadAttachment($userid, $file, $checkperms, $imageOnly); } /** * Upload an image based on the url * * @param string Remote url * @param bool Save as attachment * @param string The name of the upload form * * @return mixed Array of data, includes filesize, dateline, htmltype, filename, extension, and filedataid */ public function uploadUrl($url, $attachment = false, $uploadfrom = '') { //Only logged-in-users can upload files $userid = vB::getCurrentSession()->get('userid'); $this->checkPermission($userid); return $this->library->uploadUrl($userid, $url, $attachment, $uploadfrom); } /** * Fetch image information about an attachment based on file data id * * @param int Filedataid * @param bool Thumbnail version requested? * @param bool Should we include the image content * * @return mixed Array of data, includes filesize, dateline, htmltype, filename, extension, and filedataid */ public function fetchImageByFiledataid($id, $type = vB_Api_Filedata::SIZE_FULL, $includeData = true) { if (empty($id) OR !intval($id)) { throw new Exception('invalid_request'); } $type = vB_Api::instanceInternal('filedata')->sanitizeFiletype($type); //If the record belongs to this user, or if this user can view attachments //in this section, then this is O.K. $userinfo = vB::getCurrentSession()->fetch_userinfo(); $params = array('filedataid' => $id, 'type' => $type); $record = vB::getDbAssertor()->getRow('vBForum:getFiledataContent', $params); if (empty($record)) { return false; } if (($userinfo['userid'] == $record['userid']) OR ($record['publicview'] > 0)) { return vB_Image::instance()->loadFileData($record, $type, $includeData); } throw new vB_Exception_Api('no_view_permissions'); } /** * Fetch information of attachments without data * * @param array $filedataids Array of file data ID * * @return array The attachment data array */ public function fetchAttachByFiledataids(array $filedataids) { $userContext = vB::getUserContext(); $attachments = vB::getDbAssertor()->getRows('vBForum:fetchAttach2', array( 'filedataid' => $filedataids ), false, 'filedataid'); foreach ($attachments as $k => $v) { $isImg = $this->imageHandler->isImageExtension($v['extension']); // Permission check if ( (!$isImg AND !$userContext->getChannelPermission('forumpermissions', 'cangetattachment', $v['nodeid'])) OR ($isImg AND !$userContext->getChannelPermission('forumpermissions2', 'cangetimgattachment', $v['nodeid'])) ) { unset($attachments[$k]); } } return $attachments; } /** * Remove an attachment * * @param int Nodeid */ public function delete($nodeid) { $data = array(); if ($this->library->validate($data, $action = vB_Library_Content::ACTION_DELETE, $nodeid)) { return $this->library->delete($nodeid); } } /** * Remove an attachment * * @param int Nodeid */ public function deleteAttachment($id) { if (empty($id) OR !intval($id)) { throw new Exception('invalid_request'); } //Only the owner or an admin can delete an attachment. $userContext = vB::getUserContext(); if (!$userContext->getChannelPermission('moderatorpermissions', 'canmoderateattachments', $id)) { $node = vB_Library::instance('node')->getNodeBare($id); $userinfo = vB::getCurrentSession()->fetch_userinfo(); if ($node['userid'] != $userinfo['userid']) { throw new vB_Exception_Api('no_permission'); } } return $this->library->removeAttachment($id); } /** * See base class for information * * @param array The node array * @param bool Whether or not to include attachments */ public function getIndexableFromNode($node, $include_attachments = true) { //deliberately don't call the parent class. We don't want to load the content //twice and there isn't good way to get at the loaded content object. //merge in the attachments if any if($include_attachments) { $indexableContent = $this->getIndexableContentForAttachments($node['nodeid']); } else { $indexableContnet = array(); } $indexableContent['title'] = $node['title']; $indexableContent['description'] = $node['description']; return $indexableContent; } /** * Retrieves the permissions for the specified file type and upload method * * @param array Data: * uploadFrom *required * extension *required * channelid optional Nodeid of channel which this attachment will be a descendant of * @param bool Imageonly * * @return array $results */ public function getAttachmentPermissions($data) { //Leave for consistency with admincp if (!defined('ATTACH_AS_FILES_NEW')) { define('ATTACH_AS_FILES_NEW', 2); } // TODO: fix below. I think this is actually a bug. //Only logged-in-users can upload files $userid = vB::getCurrentSession()->get('userid'); $this->checkPermission($userid); return $this->library->getAttachmentPermissions($data); } /** * Cleans the input in the $data array, directly updating $data. * * Note: This is called from the cleanInput method in the text API for * all the attachments to the text node. * * @param mixed Array of fieldname => data pairs, passed by reference. * @param (int|bool) Nodeid of the node being edited, false if creating new */ public function cleanInput($data, $nodeid = false) { $data = parent::cleanInput($data, $nodeid); $data['filedataid'] = intval(isset($data['filedataid']) ? $data['filedataid'] : 0); $cleaner = vB::getCleaner(); $data['filename'] = $cleaner->clean($data['filename'], vB_Cleaner::TYPE_NOHTML); // clean and serialize settings $data['settings'] = isset($data['settings']) ? $data['settings'] : ''; if (!empty($data['parentid'])) { $nodeid = $data['parentid']; } $data['settings'] = $this->cleanSettings($data['settings'], $nodeid); return $data; } /** * Performs permission checks and cleaning for the 'settings' attach data and returns * the serialized string that can be saved. * Assumes that the current user is the user trying to save the settings * * @param array $settings Array with keys as specified in getAvailableSettings() * {@see getavailablesettings} * @param int $nodeid Nodeid of attachment or attachment's parent, used to * check permissions * * @return string String containing the cleaned, serialized data */ protected function cleanSettings($settings, $nodeid) { $nodeid = intval($nodeid); if (!is_array($settings) OR empty($nodeid)) { // If the caller screwed up a parameter, Let's just remove the // settings so we can continue with the attachment save. return ''; } // only allow saving of settings that are specified in getAvailableSettings() $availableSettings = $this->getAvailableSettings(); foreach ($settings AS $key => $data) { if (!in_array($key, $availableSettings['settings'])) { unset($settings[$key]); } } // styles requires a permission check $userCanCSSAttachments = vB::getUserContext()->getChannelPermission('forumpermissions', 'canattachmentcss', $nodeid); if (isset($settings['styles']) AND !$userCanCSSAttachments) { unset($settings['styles']); } // everything returned from getAvailableSettings() should be cleaned here // note that we don't *currently* forbid HTML here, since these items // (except "styles", see permission check above) go through htmlspecialchars // in the bbcode parser. See vB5_Template_BbCode::attachReplaceCallback. // @TODO should we use TYPE_NOHTML here instead of escaping in the bbcode parser? $cleanVars = array( 'alignment' => vB_Cleaner::TYPE_NOHTML, 'size' => vB_Cleaner::TYPE_NOHTML, 'title' => vB_Cleaner::TYPE_STR, 'description' => vB_Cleaner::TYPE_STR, 'styles' => vB_Cleaner::TYPE_STR, 'link' => vB_Cleaner::TYPE_INT, 'linkurl' => vB_Cleaner::TYPE_STR, 'linktarget' => vB_Cleaner::TYPE_INT, ); foreach ($availableSettings['settings'] AS $availableSetting) { if (!isset($settings[$availableSetting])) { unset($cleanVars[$availableSetting]); } } $settings = vB::getCleaner()->cleanArray($settings, $cleanVars); // additional cleaning/restrictions for some of the settings if (isset($settings['alignment'])) { $settings['alignment'] = in_array($settings['alignment'], array('none', 'left', 'center', 'right'), true) ? $settings['alignment'] : 'none'; } if (isset($settings['size'])) { $settings['size'] = vB_Api::instanceInternal('Filedata')->sanitizeFiletype($settings['size']); } if (empty($settings)) { return ''; } else { return serialize($settings); // TODO: REPLACE USE OF serialize() above WITH json_encode ALONG W/ CORRESPONDING unserialize() // IN vB5_Template_BbCode's attachReplaceCallback() (look for $settings = unserialize($attachment['settings']);) } } /** * Returns an array of settings that can be saved. * * @return array Key 'settings' => array of available setting names */ public function getAvailableSettings() { // If you add a setting here, also clean it in cleanSettings() return array( 'settings' => array( 'alignment', 'size', 'title', 'description', 'styles', 'link', 'linkurl', 'linktarget', ) ); } /** * Returns an true of the extension & size requested would be treated as an image attachment * * @param string $extension File extension of attachment * @param string $type 'icon'|'thumb'|'small'|'medium'|'large'|'full' * @return array Key 'settings' => array of available setting names */ public function isImage($extension, $type = vB_Api_Filedata::SIZE_FULL) { $extension = trim(strtolower($extension), " \t\n\r\0\x0B."); $type = vB_Api::instanceInternal('filedata')->sanitizeFiletype($type); $isImg = $this->imageHandler->isImageExtension($extension, $type); return $isImg; } /** * Returns a string[] of accepted extensions that use the img tag for display. * * @return array('extensions' => string[]) */ public function getImageExtensions() { return array('extensions' => $this->imageHandler->fetchImageExtensions()); } } /*=========================================================================*\ || ####################################################################### || # NulleD By - vBSupport.org || # CVS: $RCSfile$ - $Revision: 95114 $ || ####################################################################### \*=========================================================================*/
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