/**
* Processes a session request from the client
* @param $action Command that is to be performed
* @param $auth Auth interface to identify the current user
* @param $args Arguments for the given command
* @return stdClass Object that is supposed to be sent back to the client
*/
function process($action, $auth, $args)
{
global $mediabirdDb;
$dataHandler = new MediabirdDataHandler($auth->userId);
$reply = (object) null;
if (isset($args['settings'])) {
$settings = MediabirdUtility::getArgNoSlashes($args['settings']);
$dataHandler->storeSettings($settings);
}
switch ($action) {
case "keepAlive":
//keep alive session, that's done above
$reply->success = true;
break;
case "loadTopicList":
//retrieve the topic list
$query = "SELECT id FROM " . MediabirdConfig::tableName('Topic') . " WHERE user_id='{$auth->userId}'";
$infos = (array) null;
if ($result = $mediabirdDb->getRecordSet($query)) {
while ($results = $mediabirdDb->recordToArray($mediabirdDb->fetchNextRecord($result))) {
$id = intval($results['id']);
$infos[$id] = MediabirdTopicAccessConstants::owner;
}
$query = "SELECT topic,mask FROM " . MediabirdConfig::tableName('Right') . " WHERE mask>0 AND group_id=ANY (SELECT group_id FROM " . MediabirdConfig::tableName('Membership') . " WHERE user_id={$auth->userId} AND active=1)";
if ($result = $mediabirdDb->getRecordSet($query)) {
$reply->topics = (array) null;
while ($results = $mediabirdDb->recordToArray($mediabirdDb->fetchNextRecord($result))) {
$id = intval($results['topic']);
$mask = intval($results['mask']);
if (array_key_exists($id, $infos)) {
$infos[$id] = $infos[$id] | $mask;
} else {
$infos[$id] = $mask;
}
}
$reply->topics = (array) null;
foreach ($infos as $id => $mask) {
if ($topic = $dataHandler->updateTopic($id, null, $mask, true)) {
$topic->access = $mask;
$reply->topics[] = $topic;
}
}
} else {
$reply->error = "database error";
error_log($query);
}
} else {
$reply->error = "database error";
error_log($query);
}
$reply->success = true;
break;
case "checkTopicRevision":
$remoteRevision = intval($args['revision']);
// revision on client
$topicId = intval($args['id']);
if ($topic = $mediabirdDb->getRecord(MediabirdConfig::tableName('Topic', true), "id={$topicId}")) {
//attempt to load topic as owner
if ($topic->user_id != $auth->userId) {
if ($dataHandler->getTopicRights($topicId) < MediabirdTopicAccessConstants::allowViewingCards) {
$reply->error = "accessdenied";
break;
}
}
$revision = intval($topic->revision);
// revision in db
if ($revision <= $remoteRevision) {
$reply->success = true;
//revision is up-to-date
break;
} else {
//fall through
$data = null;
$ignoreContent = true;
}
} else {
$reply->error = "database error";
break;
}
//fall through
//fall through
case "updateTopic":
//update or create a topic
if ($action == "updateTopic") {
$data = json_decode(MediabirdUtility::getArgNoSlashes($args['topic']));
if (isset($args['id']) && is_numeric($args['id'])) {
$topicId = intval(MediabirdUtility::getArgNoSlashes($args['id']));
$ignoreContent = true;
} else {
if (property_exists($data, "title") && property_exists($data, "category") && strlen($data->title) > 0 && strlen($data->category) > 0) {
$topic = (object) null;
$topic->user_id = $auth->userId;
$topic->created = $mediabirdDb->datetime(time());
$topic->modified = $mediabirdDb->datetime(time());
$topic->title = '-';
if ($topicId = $mediabirdDb->insertRecord(MediabirdConfig::tableName('Topic', true), $topic)) {
$ignoreContent = false;
//update content for new topic
} else {
$reply->error = "database error";
}
} else {
$reply->error = "invaliddata";
}
}
}
if (!isset($reply->error)) {
//check if user is owner
$query = "SELECT user_id FROM " . MediabirdConfig::tableName('Topic') . " WHERE id={$topicId}";
if (($result = $mediabirdDb->getRecordSet($query)) && $mediabirdDb->recordLength($result) == 1) {
$results = $mediabirdDb->recordToArray($mediabirdDb->fetchNextRecord($result));
$owner = intval($results['user_id']);
$mask = 0;
if ($owner != $auth->userId) {
//retrieve access rights
$mask = $dataHandler->getTopicRights($topicId);
} else {
//owner has full rights
$mask = MediabirdTopicAccessConstants::owner;
}
if ($mask == 0) {
$reply->error = "accessdenied";
}
} else {
$reply->error = "database error";
}
}
if (!isset($reply->error)) {
if ($topic = $dataHandler->updateTopic($topicId, $data, $mask, $ignoreContent)) {
$topic->access = $mask;
$reply->success = true;
if (isset($topic->reverted)) {
$reply->reverted = $topic->reverted;
unset($topic->reverted);
}
$reply->topic = $topic;
} else {
$reply->error = "database error";
}
}
break;
case "updateTopicLicense":
//update or create a topic
$topicId = intval(MediabirdUtility::getArgNoSlashes($args['id']));
$newLicense = intval(MediabirdUtility::getArgNoSlashes($args['license']));
$query = "SELECT license,user_id FROM " . MediabirdConfig::tableName('Topic') . " WHERE id={$topicId}";
if (($result = $mediabirdDb->getRecordSet($query)) && ($results = $mediabirdDb->recordToArray($mediabirdDb->fetchNextRecord($result)))) {
$license = intval($results['license']);
$user = intval($results['user_id']);
if ($user == $auth->userId) {
if ($license != $newLicense) {
$topicDb = (object) null;
$topicDb->id = $topicId;
$topicDb->license = $newLicense;
if ($mediabirdDb->updateRecord(MediabirdConfig::tableName('Topic', true), $topicDb)) {
$reply->success = true;
$reply->license = $newLicense;
} else {
$reply->error = "database error";
}
} else {
$reply->success = true;
$reply->license = $license;
}
} else {
$reply->error = "accessdenied";
}
} else {
$reply->error = "database error";
}
break;
case "deleteTopics":
//delete a topic
$topicIds = split(",", $args['ids']);
foreach ($topicIds as $topicId) {
//get user of topic and check if current user is owner
$query = "SELECT user_id FROM " . MediabirdConfig::tableName('Topic') . " WHERE id={$topicId} AND user_id={$auth->userId}";
if (($result = $mediabirdDb->getRecordSet($query)) && $mediabirdDb->recordLength($result) == 1) {
if ($dataHandler->deleteTopic($topicId)) {
$reply->success = true;
} else {
unset($reply->success);
$reply->error = "database error";
break;
}
} else {
unset($reply->success);
$reply->error = "accessdenied";
break;
}
}
break;
case "updateCard":
//updates the contents and markers of an already registered content card
$isUpdateCard = true;
case "updateMarkers":
//updates the personal markers of an already registered content card
$cardId = intval($args['id']);
if (!isset($isUpdateCard)) {
$isUpdateCard = false;
}
//determine topic
$query = "SELECT id,user_id FROM " . MediabirdConfig::tableName('Topic') . " WHERE id=ANY (SELECT topic FROM " . MediabirdConfig::tableName('Card') . " WHERE id={$cardId})";
if (($result = $mediabirdDb->getRecordSet($query)) && $mediabirdDb->recordLength($result) == 1) {
$record = $mediabirdDb->fetchNextRecord($result);
$topicId = intval($record->id);
$owner = intval($record->user_id);
$mask = 0;
if ($owner != $auth->userId) {
$mask = $dataHandler->getTopicRights($topicId);
} else {
$mask = MediabirdTopicAccessConstants::owner;
}
if ($mask == 0) {
$reply->error = "accessdenied";
}
} else {
error_log($query);
$reply->error = "accessdenied";
}
if (isset($args["markers"])) {
$markers = json_decode(MediabirdUtility::getArgNoSlashes($args["markers"]));
}
$deletedMarkerIds = array();
//default to "none deleted"
if (isset($args["deletedMarkerIds"])) {
$deletedMarkerIds = json_decode(MediabirdUtility::getArgNoSlashes($args["deletedMarkerIds"]));
}
if ($isUpdateCard) {
//check for card locks
$minuteAgo = $mediabirdDb->datetime(time() - 60);
$query = "SELECT id FROM " . MediabirdConfig::tableName('Card') . " WHERE id={$cardId} AND (locked_by={$auth->userId} OR locked_by=0 OR locked_time < '{$minuteAgo}')";
if ($result = $mediabirdDb->getRecordSet($query)) {
if ($mediabirdDb->recordLength($result) == 1) {
$properties = (object) null;
if (isset($args["content"])) {
if ($args["content"] == "null") {
$properties->content = null;
} else {
$content = $dataHandler->purifyHTML(MediabirdUtility::getArgNoSlashes($args["content"]));
if (strlen($content) > MediabirdConstants::maxCardSize) {
$reply->error = "toobig";
} else {
$properties->content = $content;
}
}
}
if (isset($args["title"])) {
$properties->title = MediabirdUtility::getArgNoSlashes($args["title"]);
}
if (isset($markers)) {
$properties->markers = $markers;
}
} else {
$reply->error = "locked";
}
} else {
error_log($query);
$reply->error = "database error";
}
} else {
$properties = $markers;
}
if (!isset($reply->error)) {
if ($isUpdateCard) {
if ($card = $dataHandler->updateCard($topicId, $cardId, $properties, $mask, null, property_exists($properties, "markers"))) {
if (!property_exists($properties, "markers") || is_array($card->markers = $dataHandler->updateMarkers($cardId, $properties->markers, $deletedMarkerIds, $mask, $auth->userId))) {
$reply->success = true;
$reply->content = $card->content;
$reply->revision = $card->revision;
$reply->title = $card->title;
if (property_exists($card, "markers") && is_array($card->markers)) {
$reply->markers = $card->markers;
}
} else {
$reply->error = "database error";
}
} else {
$reply->error = "database error";
}
} else {
if (($markers = $dataHandler->updateMarkers($cardId, $properties, $deletedMarkerIds, $mask, $auth->userId)) !== null) {
$reply->success = true;
$reply->markers = $markers;
$query = "SELECT revision FROM " . MediabirdConfig::tableName('Card') . " WHERE id={$cardId}";
if ($result = $mediabirdDb->getRecordSet($query)) {
$results = $mediabirdDb->recordToArray($mediabirdDb->fetchNextRecord($result));
$revision = intval($results['revision']);
$revision++;
$card = (object) null;
$card->id = $cardId;
$card->revision = $revision;
if (!$mediabirdDb->updateRecord(MediabirdConfig::tableName('Card', true), $card)) {
error_log("could not increase revision of card {$cardId}");
}
} else {
error_log($query);
}
} else {
$reply->error = "database error";
}
}
}
break;
case "checkCardRevision":
$id = intval($args['id']);
$rev = intval($args['revision']);
if ($card = $mediabirdDb->getRecord(MediabirdConfig::tableName('Card', true), "id={$id}")) {
$topicId = $card->topic;
if ($topic = $mediabirdDb->getRecord(MediabirdConfig::tableName('Topic', true), "id={$topicId}")) {
//attempt to load topic as owner
if ($topic->user_id != $auth->userId) {
if ($dataHandler->getTopicRights($topicId) < MediabirdTopicAccessConstants::allowViewingCards) {
$reply->error = "accessdenied";
break;
}
}
//access okay
$revision = intval($card->revision);
if ($revision <= $rev) {
$reply->success = true;
break;
} else {
$args['ids'] = "{$id}";
//fall through to "loadCards"
}
} else {
$reply->error = "database error";
break;
}
} else {
$reply->error = "database error";
break;
}
//fall through
//fall through
case "loadCards":
//retrieves the contents of content cards (given by their id)
$cardIds = explode(",", MediabirdUtility::getArgNoSlashes($args['ids']));
$cards = (array) null;
foreach ($cardIds as $cardId) {
//determine topic
$query = "SELECT id,user_id FROM " . MediabirdConfig::tableName('Topic') . " WHERE id=ANY (SELECT topic FROM " . MediabirdConfig::tableName('Card') . " WHERE id={$cardId})";
if (($result = $mediabirdDb->getRecordSet($query)) && $mediabirdDb->recordLength($result) == 1) {
$results = $mediabirdDb->recordToArray($mediabirdDb->fetchNextRecord($result));
$topicId = intval($results['id']);
$owner = intval($results['user_id']);
$mask = 0;
if ($owner != $auth->userId) {
$mask = $dataHandler->getTopicRights($topicId);
} else {
$mask = MediabirdTopicAccessConstants::owner;
}
if ($mask == 0) {
$reply->error = "accessdenied";
}
} else {
$reply->error = "accessdenied";
}
//load content
if ($card = $dataHandler->updateCard($topicId, $cardId, null, $mask)) {
if (is_array($markers = $dataHandler->updateMarkers($cardId, null, array(), $mask, $auth->userId))) {
$card->markers = $markers;
foreach ($card->markers as $marker) {
//load flash cards
$query = "SELECT * FROM " . MediabirdConfig::tableName('Flashcard') . " WHERE marker={$marker->id} AND user_id={$auth->userId} ORDER BY num ASC";
$resultFlashCards = $mediabirdDb->getRecordSet($query);
while ($resultsFlashCards = $mediabirdDb->recordToArray($mediabirdDb->fetchNextRecord($resultFlashCards))) {
$flashCard = (object) null;
$flashCard->marker = $marker->id;
$flashCard->number = intval($resultsFlashCards['num']);
$flashCard->level = intval($resultsFlashCards['level_num']);
if (isset($resultsFlashCards['markedforrepetition'])) {
$flashCard->markedForRepetition = intval($resultsFlashCards['markedforrepetition']);
} else {
$flashCard->markedForRepetition = 0;
}
if (isset($resultsFlashCards['lasttimeanswered'])) {
$flashCard->lastTimeAnswered = intval($resultsFlashCards['lasttimeanswered']);
} else {
$flashCard->lastTimeAnswered = 0;
}
$trainingData = intval($resultsFlashCards['results']);
for ($i = 0; $i < 5; $i++) {
$flashCard->results[] = ($trainingData & 3 * pow(4, $i)) / pow(4, $i);
}
$marker->flashCards[] = $flashCard;
}
}
$cards[] = $card;
} else {
$reply->error = "database error";
}
} else {
$reply->error = "database error";
}
}
if (!isset($reply->error)) {
$reply->success = true;
$reply->cards = $cards;
}
break;
case "updateTrainingSession":
//stores the current training session, expects a marker=>flashCards array
$flashCards = json_decode(MediabirdUtility::getArgNoSlashes($args['trainingSession']));
$result = true;
foreach ($flashCards as $flashCard) {
$trainingResults = 0;
for ($i = 0; $i < sizeof($flashCard->results); $i++) {
$trainingResults |= pow(4, $i) * $flashCard->results[$i];
}
if ($flashCard->number == 0) {
$mediabirdDb->deleteRecords(MediabirdConfig::tableName('Flashcard', true), "marker={$flashCard->marker} AND user_id={$auth->userId}");
}
$flashcard = (object) null;
$flashcard->marker = $flashCard->marker;
$flashcard->user_id = $auth->userId;
$flashcard->num = $flashCard->number;
$flashcard->level_num = $flashCard->level;
$flashcard->lastTimeAnswered = $flashCard->lastTimeAnswered;
$flashcard->markedForRepetition = $flashCard->markedForRepetition;
$flashcard->results = $trainingResults;
$result = $result && $mediabirdDb->insertRecord(MediabirdConfig::tableName('Flashcard', true), $flashcard);
}
if ($result) {
$reply->success = true;
} else {
$reply->error = "database error";
}
break;
case "reportAbuse":
//file an abuse report
$id = $args['id'];
$type = $args['type'];
$body = "User with id {$auth->userId} has reported a violation against the Terms of Use.\nConcerned type: {$type}\nConcerned content id: {$id}\n";
if (!MediabirdConfig::$disable_mail) {
$oldReporting = error_reporting(0);
if (method_exists($auth, 'sendMail') && $auth->sendMail(-1, "Terms of Use violation report", $body)) {
$reply->success = true;
} else {
$reply->error = "errorsending";
}
error_reporting($oldReporting);
} else {
error_log("Abuse reported by user {$auth->userId} for data type {$type} and data id {$id}.");
$reply->success = true;
}
break;
case "suggestFeature":
//file a suggestion
$description = MediabirdUtility::getArgNoSlashes($args['description']);
$body = "User with id {$auth->userId} has suggested the following feature:\n" . $description;
$body = wordwrap($body, 70);
if (!MediabirdConfig::$disable_mail) {
$oldReporting = error_reporting(0);
if (method_exists($auth, 'sendMail') && $auth->sendMail(-1, "Mediabird Feedback", $body)) {
$reply->success = true;
} else {
$reply->error = "errorsending";
}
error_reporting($oldReporting);
} else {
error_log("Feature suggested by user {$auth->userId}: {$description} .");
$reply->success = true;
}
break;
case "changePass":
$current = MediabirdUtility::getArgNoSlashes($args['current']);
$newpass = MediabirdUtility::getArgNoSlashes($args['newpass']);
if ($current == $newpass) {
$reply->success = true;
} else {
if ($user = $mediabirdDb->getRecord(MediabirdConfig::tableName("User", true), "id={$auth->userId}")) {
if ($user->password == $current) {
$user->password = $newpass;
if ($mediabirdDb->updateRecord(MediabirdConfig::tableName("User", true), $user)) {
$reply->success = true;
}
} else {
$reply->error = "wrongpass";
}
}
}
break;
case "deleteAccount":
//delete the current account
$current = MediabirdUtility::getArgNoSlashes($args['current']);
$query = "SELECT email,name FROM " . MediabirdConfig::tableName('User') . " WHERE id={$auth->userId} AND password='******'";
$result = $mediabirdDb->getRecordSet($query);
if ($result && $mediabirdDb->recordLength($result) == 1) {
//fetch user info
$results = $mediabirdDb->recordToArray($mediabirdDb->fetchNextRecord($result));
$name = $results['name'];
$email = $results['email'];
//delete user
$result = $mediabirdDb->deleteRecords(MediabirdConfig::tableName('User', true), "id={$auth->userId} AND password='******'");
//also delete topics
$query = "SELECT id FROM " . MediabirdConfig::tableName('Topic') . " WHERE user_id={$auth->userId}";
$result = $mediabirdDb->getRecordSet($query);
if ($result) {
while ($results = $mediabirdDb->recordToArray($mediabirdDb->fetchNextRecord($result))) {
$topicId = $results['id'];
$dataHandler->deleteTopic($topicId);
}
}
$userfolder = ".MediabirdConfig::{$uploads_folder}." . $auth->userId . DIRECTORY_SEPARATOR;
if (file_exists($userfolder)) {
$oldReporting = error_reporting(0);
MediabirdUtility::deleteFolder($userfolder);
error_reporting($oldReporting);
}
//notify user
$body = "Your account '{$name}' has been deleted and all associated personal data has been erased.\nWe hope you enjoyed using Mediabird. You are welcome back anytime.\nYour Mediabird team.";
if (!MediabirdConfig::$disable_mail) {
$oldReporting = error_reporting(0);
if (method_exists($auth, 'sendMail') && $auth->sendMail($email, "Account cancelled", $body)) {
$reply->success = true;
} else {
$reply->error = "errorsending";
}
error_reporting($oldReporting);
}
//restart session!
$auth->restartSession();
$reply->success = true;
} else {
$reply->error = "wrongpass";
}
break;
case "checkOutCard":
//checks out a card for editing
$cardid = intval($args['id']);
$minuteAgo = $mediabirdDb->datetime(time() - 60);
$select = "id={$cardid} AND (locked_by IN (0,{$auth->userId}) OR locked_time < '{$minuteAgo}')";
if ($card = $mediabirdDb->getRecord(MediabirdConfig::tableName('Card', true), $select)) {
$topicId = $card->topic;
if ($topic = $mediabirdDb->getRecord(MediabirdConfig::tableName('Topic', true), "id={$topicId}")) {
//attempt to load topic as owner
if ($topic->user_id != $auth->userId) {
if ($dataHandler->getTopicRights($topicId) < MediabirdTopicAccessConstants::allowViewingCards) {
$reply->error = "accessdenied";
break;
}
}
//access okay
$reply->revision = intval($card->revision);
$card->locked_by = $auth->userId;
$card->locked_time = $mediabirdDb->datetime(time());
if ($mediabirdDb->updateRecord(MediabirdConfig::tableName('Card', true), $card)) {
$reply->success = true;
} else {
error_log("could not update card " . print_r($card, true));
$reply->error = "database error";
}
} else {
$reply->error = "database error";
}
} else {
$reply->error = "locked";
}
break;
case "checkInCard":
//releases a content card lock
$cardid = intval($args['id']);
if ($card = $mediabirdDb->getRecord(MediabirdConfig::tableName('Card', true), "id={$cardid} AND locked_by={$auth->userId}")) {
$card->locked_by = 0;
if ($mediabirdDb->updateRecord(MediabirdConfig::tableName('Card', true), $card)) {
$reply->success = true;
} else {
$reply->error = "database error";
}
} else {
$reply->error = "database error";
}
break;
case "loadNotifications":
//feed.title, feed.message_type
$query = "SELECT id, object_id, object_type, user_id, feed_id FROM " . MediabirdConfig::tableName('FeedMessage') . "\n\t\t\t\tfeed_id = ANY (SELECT feed_id FROM " . MediabirdConfig::tableName('FeedSubscription') . " WHERE user_id={$auth->userId}) AND user_id = ANY\n\t\t\t\t\t(SELECT user_id FROM " . MediabirdConfig::tableName('Membership') . " WHERE active=1 AND user_id <> {$auth->userId} AND group_id = ANY\n\t\t\t\t\t (SELECT group_id FROM " . MediabirdConfig::tableName('Membership') . " WHERE active=1 AND user_id <> {$auth->userId})\n\t\t\t\t\t ) AND message.id NOT IN \n\t\t\t\t\t ( SELECT message_id FROM " . MediabirdConfig::tableName('FeedMessagesStatus') . " WHERE user_id={$auth->userId} AND status=1 )\n\t\t\t\t\t GROUP BY id";
if ($result = $mediabirdDb->getRecordSet($query)) {
$feedMessages = (array) null;
while ($results = $mediabirdDb->recordToArray($mediabirdDb->fetchNextRecord($result))) {
$feedMessage = (object) null;
$feedMessage->id = intval($results['id']);
$feedMessage->feedId = intval($results['feed_id']);
$feedMessage->objectId = intval($results['object_id']);
$feedMessage->objectType = intval($results['object_type']);
$feedMessage->userId = intval($results['user_id']);
$feedMessages[] = $feedMessage;
}
//collect feed ids
$feedIds = array();
foreach ($feedMessages as $feedMessage) {
if (!in_array($feedMessage->feedId, $feedIds)) {
array_push($feedIds, $feedMessage->feedId);
}
}
if ($records = $mediabirdDb->getRecords(MediabirdConfig::tableName('Feed', true), "id IN (" . join(",", $feedIds) . ")", '', "id,title,message_type")) {
foreach ($feedMessages as $fi => $feedMessage) {
foreach ($records as $record) {
if ($record->id == $feedMessage->feedId) {
$feedMessage->messageType = $record->message_type;
$feedMessage->feedTitle = $record->title;
$feedMessages[$fi] = $feedMessage;
break;
}
}
}
}
$reply->notifications = $feedMessages;
$reply->success = true;
} else {
error_log($query);
$reply->error = "database error";
}
break;
case "markNotificationAsRead":
$id = intval($args['id']);
//check if $id valid
$query = "SELECT id,status FROM " . MediabirdConfig::tableName('FeedMessagesStatus') . " WHERE user_id={$auth->userId} AND message_id={$id} ";
if (($result = $mediabirdDb->getRecordSet($query)) && $mediabirdDb->recordLength($result) == 1) {
if ($results = $mediabirdDb->fetchNextRecord($result)) {
$statusId = intval($results->id);
$statusStatus = intval($results->status);
if ($statusStatus != 1) {
$messagesStatus = (object) null;
$messagesStatus->id = $statusId;
$messagesStatus->status = 1;
if ($mediabirdDb->updateRecord(MediabirdConfig::tableName('FeedMessagesStatus', true), $messagesStatus)) {
$reply->success = true;
} else {
error_log($query);
$reply->error = "database error";
}
} else {
$reply->success = true;
}
} else {
error_log($query);
$reply->error = "database error";
}
} else {
$feedDB = (object) null;
$feedDB->message_id = $id;
$feedDB->status = 1;
$feedDB->user_id = $auth->userId;
if ($mediabirdDb->insertRecord(MediabirdConfig::tableName('FeedMessagesStatus', true), $feedDB)) {
$reply->success = true;
} else {
error_log($query);
$reply->error = "database error";
}
}
break;
case "getCardsWithMarker":
$type = $args['tool'];
$select = "id IN (\n\t\t\t\t\tSELECT card FROM " . MediabirdConfig::tableName('Marker') . " WHERE notify>0 AND tool='" . $mediabirdDb->escape($type) . "' \n\t\t\t\t\t\tAND (shared = 1 OR user_id = {$auth->userId})\n\t\t\t\t\t)\n\t\t\t\t\tAND (\n\t\t\t\t\t\ttopic IN (\n\t\t\t\t\t\t\tSELECT id FROM " . MediabirdConfig::tableName('Topic') . " WHERE user_id={$auth->userId}\n\t\t\t\t\t\t)\n\t\t\t\t\t\tOR\n\t\t\t\t\t\ttopic IN (\n\t\t\t\t\t\t\tSELECT topic FROM " . MediabirdConfig::tableName('Right') . " WHERE group_id IN (\n\t\t\t\t\t\t\t\tSELECT group_id FROM " . MediabirdConfig::tableName('Membership') . " WHERE user_id={$auth->userId} AND active=1\n\t\t\t\t\t\t\t)\n\t\t\t\t\t\t)\n\t\t\t\t\t)";
$cards = (array) null;
if ($results = $mediabirdDb->getRecords(MediabirdConfig::tableName('Card', true), $select, 'created DESC', 'id')) {
foreach ($results as $result) {
$card = (object) null;
$card->id = intval($result->id);
$cards[] = $card;
}
}
$reply->cards = $cards;
$reply->success = true;
break;
case "loadGroups":
$referredUsers = (array) null;
//retrieve all groups where current user is member and public groups
$query = "SELECT * FROM " . MediabirdConfig::tableName('Group') . " WHERE id=ANY (SELECT group_id FROM " . MediabirdConfig::tableName('Membership') . " WHERE user_id={$auth->userId}) OR access_num>0";
$reply->groups = (array) null;
if ($result = $mediabirdDb->getRecordSet($query)) {
while ($results = $mediabirdDb->recordToArray($mediabirdDb->fetchNextRecord($result))) {
$group = (object) null;
$group->id = intval($results['id']);
$group->name = $results['name'];
$group->category = $results['category'];
$group->description = $results['description'];
$group->access = intval($results['access_num']);
//check for own membership
$query = "SELECT level_num,active FROM " . MediabirdConfig::tableName('Membership') . " WHERE group_id={$group->id} AND user_id={$auth->userId}";
if (($resultMember = $mediabirdDb->getRecordSet($query)) && ($results = $mediabirdDb->fetchNextRecord($resultMember))) {
$memberMe = (object) null;
$memberMe->user = $auth->userId;
$memberMe->enabled = intval($results->active);
$memberMe->level = intval($results->level_num);
$group->members[] = $memberMe;
}
//retrieve all members!
$query = "SELECT user_id,level_num,active FROM " . MediabirdConfig::tableName('Membership') . " WHERE group_id={$group->id} AND user_id<>{$auth->userId}";
if (!isset($memberMe) || $memberMe->enabled != 1 && $memberMe->enabled != 3) {
//if not member of group or (requested or invited by a member) -> only show active members, hide invitees and requesters
$query .= " AND active=1";
}
if ($resultMembers = $mediabirdDb->getRecordSet($query)) {
while ($resultsMember = $mediabirdDb->recordToArray($mediabirdDb->fetchNextRecord($resultMembers))) {
$member = (object) null;
$member->user = intval($resultsMember['user_id']);
if (array_search($member->user, $referredUsers) === false) {
$referredUsers[] = $member->user;
}
$member->enabled = intval($resultsMember['active']);
$member->level = intval($resultsMember['level_num']);
$group->members[] = $member;
}
}
$reply->groups[] = $group;
}
} else {
$reply->error = "database error";
error_log($query);
}
$users = (array) null;
if (count($referredUsers) > 0) {
$query = "SELECT id,name,email FROM " . MediabirdConfig::tableName('User') . " WHERE id IN (" . join(",", $referredUsers) . ")";
if ($result = $mediabirdDb->getRecordSet($query)) {
while ($results = $mediabirdDb->recordToArray($mediabirdDb->fetchNextRecord($result))) {
$userInfo = (object) null;
$userInfo->id = intval($results['id']);
$userInfo->name = $results['name'];
$userInfo->email = $results['email'];
$users[] = $userInfo;
}
$reply->success = true;
} else {
$reply->error = "database error";
error_log($query);
}
} else {
$reply->success = true;
}
$reply->userNames = $users;
if (isset($args['includeKnown']) && method_exists($auth, 'getKnownUsers')) {
$externalUsersTemp = $auth->getKnownUsers();
$externalUsers = array();
foreach ($externalUsersTemp as $externalTemp) {
$found = false;
if (property_exists($externalTemp, 'mb_id')) {
foreach ($users as $user) {
if ($user->id == $externalTemp->mb_id) {
$found = true;
}
}
}
if (!$found) {
array_push($externalUsers, $externalTemp);
}
}
$reply->externalUsers = $externalUsers;
}
break;
case "updateGroup":
$groupId = intval(MediabirdUtility::getArgNoSlashes($args['id']));
$properties = json_decode(MediabirdUtility::getArgNoSlashes($args['group']));
//check for own membership
$query = "SELECT level_num,active FROM " . MediabirdConfig::tableName('Membership') . " WHERE group_id={$groupId} AND user_id={$auth->userId}";
$memberMe = (object) null;
if (($result = $mediabirdDb->getRecordSet($query)) && $mediabirdDb->recordLength($result) == 1 && ($results = $mediabirdDb->recordToArray($mediabirdDb->fetchNextRecord($result)))) {
if (intval($results['level_num']) >= MediabirdConstants::groupLevelAdmin) {
//we are admin and allowed to change it
$groupDB = (object) null;
$groupDB->access_num = $properties->access;
$groupDB->name = $properties->name;
$groupDB->category = $properties->category;
$groupDB->description = $properties->description;
$groupDB->modified = $mediabirdDb->datetime(time());
$groupDB->id = $groupId;
if ($mediabirdDb->updateRecord(MediabirdConfig::tableName('Group', true), $groupDB)) {
$reply->access = intval($properties->access);
$reply->name = $properties->name;
$reply->category = $properties->category;
$reply->description = $properties->description;
$reply->success = true;
}
} else {
$reply->error = "norights";
}
} else {
$reply->error = "database error";
}
break;
case "createGroup":
$group_raw = json_decode(MediabirdUtility::getArgNoSlashes($args['group']));
$group = (object) null;
$group->name = $group_raw->name;
$group->description = $group_raw->description;
$group->category = $group_raw->category;
$group->type = 0;
$group->access_num = $group_raw->access;
$group->created = $mediabirdDb->datetime(time());
$group->modified = $mediabirdDb->datetime(time());
if ($id = $mediabirdDb->insertRecord(MediabirdConfig::tableName('Group', true), $group)) {
$group->id = intval($id);
$group->access = $group->access_num;
unset($group->access_num);
unset($group->created);
unset($group->modified);
//create membership with admin level
$membershipDB = (object) null;
$membershipDB->group_id = $group->id;
$membershipDB->user_id = $auth->userId;
$membershipDB->level_num = MediabirdConstants::groupLevelAdmin;
$membershipDB->active = 1;
$membershipDB->created = $mediabirdDb->datetime(time());
$membershipDB->modified = $mediabirdDb->datetime(time());
if ($id = $mediabirdDb->insertRecord(MediabirdConfig::tableName('Membership', true), $membershipDB)) {
$membership = (object) null;
$membership->id = intval($id);
$membership->enabled = $membershipDB->active;
$membership->level = $membershipDB->level_num;
$membership->user = $membershipDB->user_id;
$group->members[] = $membership;
$reply->success = true;
$reply->group = $group;
} else {
error_log("membership");
$reply->error = "database error";
}
} else {
error_log("group");
$reply->error = "database error";
}
break;
case "inviteToGroup":
$groupId = intval(MediabirdUtility::getArgNoSlashes($args['group']));
//users identifyable by id, i.e. mediabird members
if (isset($args['ids']) && strlen($args['ids']) > 0) {
$ids = MediabirdUtility::getArgNoSlashes($args['ids']);
$ids = split(",", $ids);
} else {
$ids = (array) null;
}
if (isset($args['names']) && strlen($args['names']) > 0) {
$emails = MediabirdUtility::getArgNoSlashes($args['names']);
$emails = split(",", $emails);
} else {
$emails = (array) null;
}
//array containing users that have just been invited
$unknownInvitees = (array) null;
if (isset($args['externalIds']) && strlen($args['externalIds']) > 0 && method_exists($auth, 'inviteKnownUser')) {
$externalIds = MediabirdUtility::getArgNoSlashes($args['externalIds']);
//users known from a mediabird embedding plattform
$externalIds = split(",", $externalIds);
$inviteeUnknown = false;
// variable to receive a value whether the user is already using Mediabird or not
foreach ($externalIds as $eId) {
if ($internalId = $auth->inviteKnownUser($eId, $inviteeUnknown)) {
if ($inviteeUnknown) {
array_push($unknownInvitees, $internalId);
}
array_push($ids, $internalId);
}
}
}
if (count($ids) > 0 || count($emails) > 0) {
//check for own membership
$query = "SELECT level_num,active FROM " . MediabirdConfig::tableName('Membership') . " WHERE group_id={$groupId} AND user_id={$auth->userId}";
$memberMe = (object) null;
if (($result = $mediabirdDb->getRecordSet($query)) && $mediabirdDb->recordLength($result) == 1 && ($results = $mediabirdDb->recordToArray($mediabirdDb->fetchNextRecord($result)))) {
$memberMe->user = $auth->userId;
$memberMe->enabled = intval($results['active']);
$memberMe->level = intval($results['level_num']);
}
//check for invite rights
$query = "SELECT access_num FROM " . MediabirdConfig::tableName('Group') . " WHERE id={$groupId}";
if (($result = $mediabirdDb->getRecordSet($query)) && $mediabirdDb->recordLength($result) == 1 && ($results = $mediabirdDb->recordToArray($mediabirdDb->fetchNextRecord($result)))) {
if (isset($memberMe) && $memberMe->level >= MediabirdConstants::groupLevelAdmin || intval($results['access_num']) > 0) {
//current user is admin or group is public
if (count($ids) != 0) {
foreach ($ids as $i => $id) {
$ids[$i] = intval($id);
}
}
if (count($emails) > 0) {
foreach ($emails as $i => $email) {
if (MediabirdUtility::checkEmail($email)) {
//checks if email has a valid format
$query = "SELECT id FROM " . MediabirdConfig::tableName('User') . " WHERE email='" . $mediabirdDb->escape($email) . "'";
if ($result = $mediabirdDb->getRecordSet($query)) {
if ($results = $mediabirdDb->fetchNextRecord($result)) {
$emailUserId = intval($results->id);
if (array_search($emailUserId, $ids) === false) {
$ids[] = $emailUserId;
}
} else {
if (!method_exists($auth, "inviteUser")) {
if (!property_exists($reply, "notfound")) {
$reply->notfound = (array) null;
}
$reply->notfound[] = $email;
} else {
// users unknown to the system are invited per mail here
// using the auth interface to allow for external email invitation
$mailSuccess = $auth->inviteUser($email);
if ($mailSuccess) {
$ids[] = $mailSuccess;
$unknownInvitees[] = $mailSuccess;
} else {
$reply->notfound[] = $email;
}
}
}
}
}
}
}
//find valid ids
$query = "SELECT id FROM " . MediabirdConfig::tableName('User') . " WHERE id<>{$auth->userId} AND ";
if (count($ids) > 0) {
$query .= "id IN (" . join(",", $ids) . ")";
} else {
$query .= "0=1";
}
if ($result = $mediabirdDb->getRecordSet($query)) {
while ($results = $mediabirdDb->fetchNextRecord($result)) {
$inviteId = intval($results->id);
//check if user is already member of group
$select = "user_id={$inviteId} AND group_id={$groupId}";
if (!$mediabirdDb->getRecord(MediabirdConfig::tableName('Membership', true), $select)) {
if ($memberMe->level >= MediabirdConstants::groupLevelAdmin) {
if (in_array($inviteId, $unknownInvitees)) {
// if user has just been invited to Mediabird, a full membership is created
// new user will be able to find shared topic when having logged in
$enabled = 1;
} else {
$enabled = 3;
}
} else {
$enabled = 2;
}
$membershipDB = (object) null;
$membershipDB->user_id = $inviteId;
$membershipDB->group_id = $groupId;
$membershipDB->active = $enabled;
$membershipDB->created = $mediabirdDb->datetime(time());
$membershipDB->modified = $mediabirdDb->datetime(time());
if ($mediabirdDb->insertRecord(MediabirdConfig::tableName('Membership', true), $membershipDB)) {
if (!property_exists($reply, "invited")) {
$reply->invited = (array) null;
}
$reply->invited[] = $inviteId;
} else {
$reply->error = "database error";
}
}
}
} else {
error_log($query);
$reply->error = "database error";
}
if (!isset($reply->error)) {
$reply->success = true;
}
} else {
$reply->error = "norights";
}
} else {
error_log($query);
$reply->error = "database error";
}
} else {
$reply->state = "emptylist";
}
break;
case "joinGroup":
$groupId = intval(MediabirdUtility::getArgNoSlashes($args['id']));
//test if already joined
$query = "SELECT id,active FROM " . MediabirdConfig::tableName('Membership') . " WHERE user_id={$auth->userId} AND group_id={$groupId}";
if ($result = $mediabirdDb->getRecordSet($query)) {
$resultssCount = $mediabirdDb->recordLength($result);
$enabled = 0;
if ($resultssCount > 0 && ($results = $mediabirdDb->recordToArray($mediabirdDb->fetchNextRecord($result)))) {
$memberId = intval($results['id']);
$enabled = intval($results['active']);
$reply->state = $enabled;
}
if ($resultssCount == 0 || $enabled >= 2) {
//not a member or was invited
//check if user is allowed to join or request, or confirm invitation
$query = "SELECT access_num FROM " . MediabirdConfig::tableName('Group') . " WHERE id={$groupId}";
if (($result = $mediabirdDb->getRecordSet($query)) && $mediabirdDb->recordLength($result) == 1) {
$results = $mediabirdDb->recordToArray($mediabirdDb->fetchNextRecord($result));
$access = intval($results['access_num']);
//enabled = 3 means was invited by admin
if ($enabled != 3 && $access == 0) {
//access denied!
$reply->error = "access denied";
} else {
if ($resultssCount == 0) {
//request
if ($access == 1) {
$enabled = 0;
} else {
$enabled = 1;
}
$membershipDB = (object) null;
$membershipDB->user_id = $auth->userId;
$membershipDB->group_id = $groupId;
$membershipDB->active = $enabled;
$membershipDB->created = $mediabirdDb->datetime(time());
$membershipDB->modified = $mediabirdDb->datetime(time());
if ($mediabirdDb->insertRecord(MediabirdConfig::tableName('Membership', true), $membershipDB)) {
$reply->state = $enabled;
}
$reply->created = true;
} else {
//confirm invitation
if ($enabled == 3 || $access > 1) {
$enabled = 1;
} else {
$enabled = 0;
}
$membership = (object) null;
$membership->id = $memberId;
$membership->active = $enabled;
$membership->modified = $mediabirdDb->datetime(time());
if ($mediabirdDb->updateRecord(MediabirdConfig::tableName('Membership', true), $membership)) {
$reply->state = $enabled;
}
}
}
}
}
}
if (property_exists($reply, "state")) {
$reply->success = true;
} else {
if (!isset($reply->error)) {
$reply->error = "database error";
}
}
break;
case "updateMember":
//promote, accept or remove member
$groupId = intval(MediabirdUtility::getArgNoSlashes($args['group']));
$memberUserId = intval(MediabirdUtility::getArgNoSlashes($args['user']));
$level = intval(MediabirdUtility::getArgNoSlashes($args['level']));
$enabled = intval(MediabirdUtility::getArgNoSlashes($args['enabled']));
//check if user has admin rights
$query = "SELECT id FROM " . MediabirdConfig::tableName('Membership') . " WHERE group_id={$groupId} AND user_id={$auth->userId} AND (level_num >= " . MediabirdConstants::groupLevelAdmin . ")";
if (($result = $mediabirdDb->getRecordSet($query)) && $mediabirdDb->recordLength($result) == 1) {
if ($memberUserId != $auth->userId) {
if ($level != -1) {
//check if there is a user that can be promoted
$membershipDB = $mediabirdDb->getRecord(MediabirdConfig::tableName('Membership', true), "group_id={$groupId} AND user_id={$memberUserId} AND active=0");
$membershipDB->level_num = $level;
$membershipDB->active = $enabled;
$membershipDB->modified = $mediabirdDb->datetime(time());
if ($mediabirdDb->updateRecord(MediabirdConfig::tableName('Membership', true), $membershipDB)) {
$reply->success = true;
$reply->level = $level;
$reply->enabled = $enabled;
} else {
$reply->error = "nomember";
}
} else {
if ($dataHandler->deleteMembership($memberUserId, $groupId)) {
$reply->success = true;
$reply->level = -1;
} else {
$reply->error = "database error";
}
}
} else {
if ($level == -1) {
$reply->error = "cannotremoveownmembership";
} else {
//only allow demoting oneself if there is at least one other admin!
$query = "SELECT FROM " . MediabirdConfig::tableName('Membership') . " WHERE group_id={$groupId} AND user_id<>{$auth->userId} AND (level_num >= " . MediabirdConstants::groupLevelAdmin . ")";
if (($result = $mediabirdDb->getRecordSet($query)) && $mediabirdDb->recordLength($result) > 0) {
//demoting allowed
$membershipDB = $mediabirdDb->getRecord(MediabirdConfig::tableName('Membership', true), "group_id={$groupId} AND user_id={$memberUserId}");
$membershipDB->level_num = $level;
$membershipDB->active = $enabled;
$membershipDB->modified = $mediabirdDb->datetime(time());
if ($mediabirdDb->updateRecord(MediabirdConfig::tableName('Membership', true), $membershipDB)) {
$reply->success = true;
$reply->level = $level;
$reply->enabled = $enabled;
} else {
$reply->error = "database error";
}
} else {
$reply->error = "notenoughadmins";
}
}
}
} else {
$reply->error = "norights";
}
break;
case "leaveGroup":
$groupId = intval(MediabirdUtility::getArgNoSlashes($args['id']));
//check for further admins
$query = "SELECT user_id FROM " . MediabirdConfig::tableName('Membership') . " WHERE group_id={$groupId} AND (level_num >= " . MediabirdConstants::groupLevelAdmin . ")";
if ($result = $mediabirdDb->getRecordSet($query)) {
$removeMembership = true;
if ($mediabirdDb->recordLength($result) == 1) {
$results = $mediabirdDb->recordToArray($mediabirdDb->fetchNextRecord($result));
if (intval($results['user_id']) == $auth->userId) {
//user is only admin of group, promote to next member
$query = "SELECT id FROM " . MediabirdConfig::tableName('Membership') . " WHERE group_id={$groupId} AND user_id <> {$auth->userId}";
if ($result = $mediabirdDb->getRecordSet($query)) {
if ($mediabirdDb->recordLength($result) > 0) {
if ($membershipDB = $mediabirdDb->getRecord(MediabirdConfig::tableName('Membership', true), "group_id={$groupId} AND user_id <> {$auth->userId} AND active=1")) {
$membershipDB->level_num = MediabirdConstants::groupLevelAdmin;
$membershipDB->modified = $mediabirdDb->datetime(time());
if ($mediabirdDb->updateRecord(MediabirdConfig::tableName('Membership', true), $membershipDB)) {
$reply->state = "foundnewadmin";
} else {
$removeMembership = false;
}
} else {
$removeMembership = false;
}
} else {
//no user left, delete group!
if ($dataHandler->deleteGroup($groupId)) {
$reply->state = "groupremoved";
} else {
$removeMembership = false;
}
}
} else {
$removeMembership = false;
}
}
}
if ($removeMembership) {
if ($dataHandler->deleteMembership($auth->userId, $groupId)) {
$reply->success = true;
} else {
$reply->error = "database error";
}
} else {
$reply->error = "nonewadmin";
}
} else {
$reply->error = "database error";
}
break;
case "shareTopic":
$topicId = intval(MediabirdUtility::getArgNoSlashes($args['topic']));
$groupId = intval(MediabirdUtility::getArgNoSlashes($args['group']));
$mask = intval(MediabirdUtility::getArgNoSlashes($args['mask']));
//check if user is owner of topic
$query = "SELECT user_id FROM " . MediabirdConfig::tableName('Topic') . " WHERE id={$topicId}";
if (($result = $mediabirdDb->getRecordSet($query)) && $mediabirdDb->recordLength($result) == 1) {
$result = $mediabirdDb->recordToArray($mediabirdDb->fetchNextRecord($result));
$owner = intval($result['user_id']);
if ($owner == $auth->userId) {
//check if user is member of group
$query = "SELECT id FROM " . MediabirdConfig::tableName('Membership') . " WHERE group_id={$groupId} AND user_id={$auth->userId} AND active=1";
if (($result = $mediabirdDb->getRecordSet($query)) && $mediabirdDb->recordLength($result) == 1) {
//user is member of group, check if already shared
$query = "SELECT id,mask FROM " . MediabirdConfig::tableName('Right') . " WHERE topic={$topicId} AND group_id={$groupId}";
if ($result = $mediabirdDb->getRecordSet($query)) {
if ($mediabirdDb->recordLength($result) == 0) {
//share
$right = (object) null;
$right->topic = $topicId;
$right->group_id = $groupId;
$right->mask = $mask;
if ($rightId = $mediabirdDb->insertRecord(MediabirdConfig::tableName('Right', true), $right)) {
$reply->mask = $mask;
$reply->id = $rightId;
$reply->success = true;
} else {
$reply->error = "database error";
}
} else {
if ($results = $mediabirdDb->recordToArray($mediabirdDb->fetchNextRecord($result))) {
$reply->id = intval($results['id']);
$reply->mask = $mask;
$currentMask = intval($results['mask']);
if ($currentMask != $mask) {
$rightDB = (object) null;
$rightDB->id = $reply->id;
$rightDB->mask = $mask;
if ($mediabirdDb->updateRecord(MediabirdConfig::tableName('Right', true), $rightDB)) {
$reply->success = true;
} else {
$reply->error = "database error";
}
} else {
$reply->success = true;
}
} else {
$reply->error = "database error";
}
}
} else {
$reply->error = "database error";
}
} else {
$reply->error = "notmember";
}
} else {
$reply->error = "notowner";
}
}
break;
case "searchDatabase":
$query = MediabirdUtility::getArgNoSlashes($args['query']);
$type = intval($args['type']);
if ($results = $dataHandler->searchDatabase($query, $type)) {
$reply->groups = $results[0];
$reply->topics = $results[1];
$reply->cards = $results[2];
$reply->success = true;
} else {
$reply->error = "database error";
}
break;
case "checkEquationSupport":
$reply->exists = class_exists("LatexRender", false) && file_exists(MediabirdConfig::$latex_path) && file_exists(MediabirdConfig::$convert_path);
break;
case "renderEquation":
if (class_exists("LatexRender") && isset($args["topic"]) && isset($args["equation"])) {
$topic = intval($args["topic"]);
if (MediabirdUtility::checkAccess($topic, $auth->userId)) {
$userFolder = MediabirdConfig::$uploads_folder;
if (property_exists($auth, "userSubfolder")) {
$userFolder .= $auth->userSubfolder . DIRECTORY_SEPARATOR;
} else {
$userFolder .= $auth->userId . DIRECTORY_SEPARATOR;
}
if (!file_exists($userFolder)) {
mkdir($userFolder, 0777, true);
}
$userQuota = MediabirdUtility::getUserQuota($auth->userId);
$quotaLeft = MediabirdUtility::quotaLeft($auth->userId, $userQuota);
$equation = MediabirdUtility::getArgNoSlashes($args["equation"]);
$renderer = new LatexRender($userFolder, "", MediabirdConfig::$cache_folder);
$renderer->_latex_path = MediabirdConfig::$latex_path;
$renderer->_convert_path = MediabirdConfig::$convert_path;
$resultFile = $renderer->checkFormulaCache($equation);
if (!$resultFile) {
$resultFile = $renderer->renderLatex($equation);
if ($resultFile && file_exists($resultFile)) {
$fileSize = filesize($resultFile);
if ($fileSize < $quotaLeft || $quotaLeft == -1) {
$status_code = copy($resultFile, $renderer->destinationFile);
if (!$status_code) {
$resultFile = null;
$renderer->_errorcode = 6;
} else {
$resultFile = $renderer->destinationFile;
}
} else {
$resultFile = null;
$renderer->_errorcode = 7;
//not enough quota
}
$renderer->cleanTemporaryDirectory();
} else {
$renderer->_errorcode = 3;
//could not render file
}
} else {
$resultFile = $userFolder . $resultFile;
}
$reply = (object) null;
if ($resultFile && file_exists($resultFile)) {
$resultFile = str_ireplace(MediabirdConfig::$uploads_folder, '', $resultFile);
$resultFile = str_replace(DIRECTORY_SEPARATOR, '/', $resultFile);
$reply->success = true;
$reply->topic = $topic;
$reply->filename = $resultFile;
} else {
$reply->errorcode = $renderer->_errorcode;
$reply->error = "latex";
}
} else {
$reply->error = "invalidtopic";
}
}
break;
}
return $reply;
}
/**
* Renders equation
* @param $equation
* @return unknown_type
*/
function renderEquation($equation,&$results) {
$renderer = new LatexRender(MediabirdConfig::$cache_folder);
$renderer->_latex_path = MediabirdConfig::$latex_path;
$renderer->_convert_path = MediabirdConfig::$convert_path;
$userFolder = $this->getUserFolder();
if(!file_exists($userFolder)) {
mkdir($userFolder);
}
$path = $renderer->checkFormulaCache($equation,$userFolder);
if (!$path) {
$quotaLeft = $this->quotaLeft();
if ($quotaLeft == 0) {
return MediabirdConstants::notEnoughQuota;
}
$path = $renderer->renderLatex($equation);
if ($path && file_exists($path)) {
$fileSize = filesize($path);
if ($fileSize < $quotaLeft || $quotaLeft == -1) {
$status_code = copy($path, $userFolder.$renderer->destinationFile);
if (!$status_code) {
$result = MediabirdConstants::serverError;
}
else {
$path = $renderer->destinationFile;
}
}
else {
$result = MediabirdConstants::notEnoughQuota;
}
}
else {
error_log("File does not seem to exist: '$path'");
$result = MediabirdConstants::serverError;
}
$renderer->cleanTemporaryDirectory();
//check if a return value has been saved (i.e. an error occurred)
if(isset($result)) {
return $result;
}
}
//construct subpath info
$path = $this->getUserSubfolder().$path;
//store file in database
$file = $this->registerUpload($path,MediabirdConstants::fileTypeEquation);
if($file) {
$results['files'] []= $file;
return MediabirdConstants::processed;
}
else {
return MediabirdConstants::serverError;
}
}