299 lines
10 KiB
PHP
299 lines
10 KiB
PHP
<?php
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/**
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* Controller class for handling ShowImage-related functionality.
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* Changelog:
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* 16/09/2014 : v1.0 Created class skeleton, added image upload functionality
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* 18/09/2014 : v1.1 Changed auth references to static calls
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* 06/02/2015 : v1.2 Changed endpoints to be more RESTful, changed classname to
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* better reflect functionality
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* 09/02/2015 : v1.2.1 Added more comments
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* @author sourcefabric
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* @version 1.2.1
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*/
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class Rest_ShowImageController extends Zend_Rest_Controller {
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public function init() {
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// Remove layout dependencies
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$this->view->layout()->disableLayout();
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// Remove reliance on .phtml files to render requests
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$this->_helper->viewRenderer->setNoRender(true);
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}
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/**
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* headAction is needed as it is defined as an abstract function in the base controller
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*
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* @return void
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*/
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public function headAction()
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{
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Logging::info("HEAD action received");
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}
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public function indexAction() {
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Logging::info("INDEX action received");
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}
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public function getAction() {
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Logging::info("GET action received");
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}
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public function putAction() {
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Logging::info("PUT action received");
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}
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/**
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* RESTful POST endpoint; used when uploading show images
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*/
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public function postAction() {
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$showId = $this->getShowId();
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if (!$showId) {
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$this->getResponse()
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->setHttpResponseCode(400)
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->appendBody("No show ID provided");
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return;
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}
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try {
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$path = $this->processUploadedImage($showId, $_FILES["file"]["tmp_name"]);
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} catch (Exception $e) {
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$this->getResponse()
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->setHttpResponseCode(500)
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->appendBody("Error processing image: " . $e->getMessage());
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return;
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}
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$show = CcShowQuery::create()->findPk($showId);
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$con = Propel::getConnection();
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try {
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$con->beginTransaction();
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$show->setDbImagePath($path);
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$show->save();
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$con->commit();
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} catch (Exception $e) {
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$con->rollBack();
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$this->getResponse()
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->setHttpResponseCode(500)
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->appendBody("Couldn't add show image: " . $e->getMessage());
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}
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$this->getResponse()
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->setHttpResponseCode(201);
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}
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/**
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* RESTful DELETE endpoint; used when deleting show images
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*/
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public function deleteAction() {
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$showId = $this->getShowId();
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if (!$showId) {
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$this->getResponse()
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->setHttpResponseCode(400)
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->appendBody("No show ID provided");
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return;
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}
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try {
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self::deleteShowImagesFromStor($showId);
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} catch (Exception $e) {
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$this->getResponse()
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->setHttpResponseCode(500)
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->appendBody("Error processing image: " . $e->getMessage());
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}
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$show = CcShowQuery::create()->findPk($showId);
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$con = Propel::getConnection();
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try {
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$con->beginTransaction();
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$show->setDbImagePath(null);
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$show->save();
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$con->commit();
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} catch (Exception $e) {
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$con->rollBack();
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$this->getResponse()
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->setHttpResponseCode(500)
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->appendBody("Couldn't remove show image: " . $e->getMessage());
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}
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$this->getResponse()
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->setHttpResponseCode(201);
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}
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/**
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* Verify and process an uploaded image file, copying it into
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* .../stor/imported/:owner-id/show-images/:show-id/ to differentiate between
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* individual users and shows
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*
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* @param int $showId the ID of the show we're adding the image to
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* @param string $tempFilePath temporary filepath assigned to the upload generally of the form /tmp/:tmp_name
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*
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* @throws Exception
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* - when a file with an unsupported file extension is uploaded or an
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* error occurs in copyFileToStor
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* @return string the path to the new location for the file
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*/
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private function processUploadedImage($showId, $tempFilePath) {
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$ownerId = RestAuth::getOwnerId();
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//Only accept files with a file extension that we support.
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$fileExtension = $this->getFileExtension($tempFilePath);
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if (!in_array(strtolower($fileExtension), explode(",", "jpg,png,gif,jpeg"))) {
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@unlink($tempFilePath);
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throw new Exception("Bad file extension.");
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}
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$storDir = Application_Model_MusicDir::getStorDir();
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$importedStorageDirectory = $storDir->getDirectory() . "imported/" . $ownerId . "/show-images/" . $showId;
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try {
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$importedStorageDirectory = $this->copyFileToStor($tempFilePath, $importedStorageDirectory, $fileExtension);
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} catch (Exception $e) {
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@unlink($tempFilePath);
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throw new Exception("Failed to copy file: " . $e->getMessage());
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}
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return $importedStorageDirectory;
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}
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/**
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* Check the MIME type of an uploaded file to determine what extension it should have
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*
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* @param $tempFilePath the file path to the uploaded file in /tmp
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*
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* @return string the file extension for the new file based on its MIME type
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*/
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private function getFileExtension($tempFilePath) {
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// Don't trust the extension - get the MIME-type instead
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$fileInfo = finfo_open();
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$mime = finfo_file($fileInfo, $tempFilePath, FILEINFO_MIME_TYPE);
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return $this->getExtensionFromMime($mime);
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}
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/**
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* Use a hardcoded list of accepted MIME types to return a file extension
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*
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* @param $mime the MIME type of the file
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*
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* @return string the file extension based on the given MIME type
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*/
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private function getExtensionFromMime($mime) {
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$extensions = array(
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'image/jpeg' => 'jpg',
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'image/png' => 'png',
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'image/gif' => 'gif'
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);
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return $extensions[$mime];
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}
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/**
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* Copy a given file in /tmp to the user's stor directory
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*
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* @param string $tempFilePath the path to the file in /tmp
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* @param string $importedStorageDirectory the path to the new location for the file
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* @param string $fileExtension the file's extension based on its MIME type
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*
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* @return string the new full path to the file in stor
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* @throws Exception if either the storage directory does not exist and cannot be
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* created, the storage directory does not have write permissions
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* enabled, or the user's hard drive does not have enough space to
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* store the file
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*/
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private function copyFileToStor($tempFilePath, $importedStorageDirectory, $fileExtension) {
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$image_file = $tempFilePath;
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// check if show image dir exists and if not, create one
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if (!file_exists($importedStorageDirectory)) {
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if (!mkdir($importedStorageDirectory, 0777, true)) {
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throw new Exception("Failed to create storage directory.");
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}
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}
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if (chmod($image_file, 0644) === false) {
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Logging::info("Warning: couldn't change permissions of $image_file to 0644");
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}
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$newFileName = substr($tempFilePath, strrpos($tempFilePath, "/")) . "." . $fileExtension;
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// Did all the checks for real, now trying to copy
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$image_stor = Application_Common_OsPath::join($importedStorageDirectory, $newFileName);
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Logging::info("Adding image: " . $image_stor);
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Logging::info("copyFileToStor: moving file $image_file to $image_stor");
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if (@rename($image_file, $image_stor) === false) {
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//something went wrong likely there wasn't enough space in .
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//the audio_stor to move the file too warn the user that .
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//the file wasn't uploaded and they should check if there .
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//is enough disk space .
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unlink($image_file); //remove the file after failed rename
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throw new Exception("The file was not uploaded, this error can occur if the computer "
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. "hard drive does not have enough disk space or the stor "
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. "directory does not have correct write permissions.");
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}
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return $image_stor;
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}
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// Should this be an endpoint instead?
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/**
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* Delete any images belonging to the show with the given ID
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*
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* @param int $showId the ID of the show we're deleting images from
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*
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* @return bool true if the images were successfully deleted, otherwise false
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*/
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public static function deleteShowImagesFromStor($showId) {
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$ownerId = RestAuth::getOwnerId();
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$storDir = Application_Model_MusicDir::getStorDir();
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$importedStorageDirectory = $storDir->getDirectory() . "imported/" . $ownerId . "/show-images/" . $showId;
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Logging::info("Deleting images from " . $importedStorageDirectory);
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// to be safe in case image uploading functionality is extended later
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if (!file_exists($importedStorageDirectory)) {
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Logging::info("No uploaded images for show with id " . $showId);
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return true;
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} else {
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return self::delTree($importedStorageDirectory);
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}
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}
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// from a note @ http://php.net/manual/en/function.rmdir.php
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private static function delTree($dir) {
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$files = array_diff(scandir($dir), array('.', '..'));
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foreach ($files as $file) {
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(is_dir("$dir/$file")) ? self::delTree("$dir/$file") : unlink("$dir/$file");
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}
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return rmdir($dir);
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}
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/**
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* Fetch the id parameter from the request.
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* @return boolean|int false if the show id wasn't
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* provided, otherwise returns the id
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*/
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private function getShowId() {
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if (!($id = $this->_getParam('id', false))) {
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$resp = $this->getResponse();
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$resp->setHttpResponseCode(400);
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$resp->appendBody("ERROR: No show ID specified.");
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return false;
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}
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return $id;
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}
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} |