/**
* Download file(s)
*
* @return void redirect
*/
protected function _download()
{
// Incoming
$render = Request::getVar('render', 'download');
$hash = Request::getVar('hash', '');
// Metadata collector
$collector = array();
// Combine file and folder data
$items = $this->_sortIncoming();
// Get stored remote connections
$remotes = $this->_getRemoteConnections(false);
// Params for repo call
$params = array('subdir' => $this->subdir, 'remoteConnections' => $remotes);
// Collect items
if (!$items) {
$this->setError(Lang::txt('PLG_PROJECTS_FILES_ERROR_NO_FILES_TO_SHOW_HISTORY'));
} else {
foreach ($items as $element) {
foreach ($element as $type => $item) {
// Get type and item name
break;
}
// Must have a name
if (trim($item) == '') {
continue;
}
// Build metadata object
$collector[] = $this->repo->getMetadata($item, $type, $params);
}
}
// Check that we have item(s) to download
if (empty($collector)) {
// Throw error
App::abort(404, Lang::txt('PLG_PROJECTS_FILES_FILE_NOT_FOUND'));
}
// File preview?
if ($render == 'preview') {
// Output HTML
$view = new \Hubzero\Plugin\View(array('folder' => 'projects', 'element' => 'files', 'name' => 'preview'));
$view->file = isset($collector[0]) ? $collector[0] : NULL;
// Get last revision
if (!$view->file->get('converted') && !$hash) {
$params['file'] = $view->file;
$hash = $this->repo->getLastRevision($params);
$view->file->set('hash', $hash);
}
$view->option = $this->_option;
$view->model = $this->model;
if (!$view->file instanceof \Components\Projects\Models\File) {
$view->setError(Lang::txt('PLG_PROJECTS_FILES_ERROR_FILE_INFO_NOT_FOUND'));
}
return $view->loadTemplate();
}
// Other rendering?
if ($render == 'thumb' || $render == 'inline' || $render == 'medium') {
$file = isset($collector[0]) ? $collector[0] : NULL;
if (!$file instanceof \Components\Projects\Models\File) {
App::abort(404, Lang::txt('PLG_PROJECTS_FILES_FILE_NOT_FOUND'));
}
// Get last revision
if (!$file->get('converted') && !$hash) {
$params['file'] = $file;
$hash = $this->repo->getLastRevision($params);
}
$image = $file->getPreview($this->model, $hash, 'fullPath', $render);
// Serve image
if ($image && is_file($image)) {
$server = new \Hubzero\Content\Server();
$server->filename($image);
$server->serve_inline($image);
exit;
}
}
// File download
if (count($items) > 1) {
$archive = $this->_archiveFiles($items);
if (!$archive) {
$this->setError($this->getError() . ' ' . Lang::txt('PLG_PROJECTS_FILES_ARCHIVE_ERROR'));
} else {
$downloadPath = $archive['path'];
$serveas = 'Project Files ' . Date::toSql() . '.zip';
}
} else {
$file = isset($collector[0]) ? $collector[0] : NULL;
if (!$file instanceof \Components\Projects\Models\File) {
App::abort(404, Lang::txt('PLG_PROJECTS_FILES_FILE_NOT_FOUND'));
}
$serveas = $file->get('name');
// Open converted file
if (!empty($this->_remoteService) && $file->get('converted') && $this->_task == 'open') {
// Is user connected?
$connected = $this->_connect->getStoredParam($this->_remoteService . '_token', $this->_uid);
if (!$connected) {
// Redirect to connect screen
\Notify::message(Lang::txt('PLG_PROJECTS_FILES_REMOTE_PLEASE_CONNECT'), 'success', 'projects');
// Redirect
App::redirect(Route::url($this->model->link('files') . '&action=connect'));
}
// Load remote resource
$this->_connect->setUser($this->model->get('owned_by_user'));
$resource = $this->_connect->loadRemoteResource($this->_remoteService, $this->model->get('owned_by_user'), $file->get('remoteId'));
$openLink = $resource && isset($resource['alternateLink']) ? $resource['alternateLink'] : '';
if (!$openLink) {
// Throw error
App::abort(404, Lang::txt('PLG_PROJECTS_FILES_FILE_NOT_FOUND') . ' ' . $file->get('name'));
}
// Redirect
App::redirect($openLink);
}
// Import & download converted file
if (!empty($this->_remoteService) && $file->get('converted')) {
$temp_path = sys_get_temp_dir();
// Load remote resource
$this->_connect->setUser($this->model->get('owned_by_user'));
$resource = $this->_connect->loadRemoteResource($this->_remoteService, $this->model->get('owned_by_user'), $file->get('remoteId'));
// Tex file?
$tex = Components\Projects\Helpers\Compiler::isTexFile($file->get('remoteTitle'), $file->get('originalFormat'));
$cExt = $tex ? 'tex' : \Components\Projects\Helpers\Google::getGoogleImportExt($file->get('mimeType'));
$url = \Components\Projects\Helpers\Google::getDownloadUrl($resource, $cExt);
$data = $this->_connect->sendHttpRequest($this->_remoteService, $this->model->get('owned_by_user'), $url);
// Clean up data from Windows characters - important!
$data = $tex ? preg_replace('/[^(\\x20-\\x7F)\\x0A]*/', '', $data) : $data;
$ftname = \Components\Projects\Helpers\Google::getImportFilename($file->get('remoteTitle'), $cExt);
$serveas = $ftname;
$this->_connect->fetchFile($data, $ftname, $temp_path);
$downloadPath = $temp_path . DS . $ftname;
} elseif ($hash) {
$tempPath = 'temp-' . \Components\Projects\Helpers\Html::generateCode(4, 4, 0, 1, 0) . $serveas;
$downloadPath = sys_get_temp_dir() . DS . $tempPath;
// Get file content
$params = array('fileName' => $file->get('localPath'), 'hash' => $hash, 'target' => $downloadPath);
$this->repo->getFileContent($params);
} else {
// Viewing current file
$serveas = urldecode(Request::getVar('serveas', $file->get('name')));
$downloadPath = $file->get('fullPath');
}
}
// Now we can actually download
if (!empty($downloadPath)) {
// Ensure the file exist
if (!file_exists($downloadPath)) {
// Throw error
App::abort(404, Lang::txt('PLG_PROJECTS_FILES_FILE_NOT_FOUND'));
}
// Cannot download zero byte files
if (filesize($downloadPath) == 0) {
$this->setError(Lang::txt('PLG_PROJECTS_FILES_ERROR_ZERO_BYTE'));
}
// Proceed with download
if (!$this->getError()) {
// Initiate a new content server and serve up the file
$server = new \Hubzero\Content\Server();
$server->filename($downloadPath);
$server->disposition('attachment');
$server->acceptranges(false);
$server->saveas($serveas);
$result = $server->serve_attachment($downloadPath, $serveas, false);
if (!$result) {
// Should only get here on error
App::abort(404, Lang::txt('PLG_PROJECTS_FILES_SERVER_ERROR'));
} else {
// Clean up the /tmp directory from zip files (download multiple files)
$temp_path = sys_get_temp_dir();
$matches = array();
preg_match('/^(\\/tmp.*?\\.zip)/is', $downloadPath, $matches);
if (!empty($matches)) {
\Hubzero\Filesystem::delete($downloadPath);
}
exit;
}
}
}
// Pass success or error message
if ($this->getError()) {
\Notify::message($this->getError(), 'error', 'projects');
}
// Redirect to file list
$url = $this->model->link('files') . '&action=browse';
$url .= $this->repo->isLocal() ? '' : '&repo=' . $this->repo->get('name');
$url .= $this->subdir ? '&subdir=' . urlencode($this->subdir) : '';
// Redirect
App::redirect(Route::url($url));
}
public function renderlatexTask()
{
$expression = Request::getVar('expression', '');
$dir = PATH_APP . DS . 'cache' . DS . 'ckeditor' . DS . 'hubzeroequation' . DS;
$filename = uniqid("equation_");
$error = null;
//build tex document
$doc = '\\documentclass[12pt]{article}' . "\n";
$doc .= '\\usepackage[utf8]{inputenc}' . "\n";
$doc .= '\\usepackage{amssymb,amsmath}' . "\n";
$doc .= '\\usepackage{color}' . "\n";
$doc .= '\\usepackage{amsfonts}' . "\n";
$doc .= '\\usepackage{amssymb}' . "\n";
$doc .= '\\usepackage{pst-plot}' . "\n";
$doc .= '\\begin{document}' . "\n";
$doc .= '\\pagestyle{empty}' . "\n";
$doc .= '\\begin{displaymath}' . "\n";
$doc .= $expression . "\n";
$doc .= '\\end{displaymath}' . "\n";
$doc .= '\\end{document}' . "\n";
//if cache doesn't exist, create it
if (!is_dir($dir)) {
\Hubzero\Filesystem::makeDirectory($dir);
}
if (file_put_contents($dir . DS . $filename . '.tex', $doc) === false) {
throw new \Exception('Failed to open target file');
}
try {
//execute latex to build dvi
$command = 'cd ' . $dir . '; /usr/bin/latex ' . $filename . '.tex < /dev/null |grep ^!|grep -v Emergency > ' . $dir . DS . $filename . '.error 2> /dev/null 2>&1';
exec($command, $output_lines, $exit_status);
//execute dvi2png to build png
$command = "/usr/bin/dvipng -bg 'transparent' -q -T tight -D 100 -o " . $dir . DS . $filename . '.png ' . $dir . DS . $filename . '.dvi 2>&1';
exec($command, $output_lines, $exit_status);
if ($exit_status != 0) {
throw new \Exception("dvi2png failed");
}
} catch (\Exception $e) {
$error = $e->getMessage();
}
//build response
$object = new stdClass();
if ($error) {
$object->error = $error;
$object->img = 'data:image/png;base64,';
} else {
//no errors - send base64 encoded image
$object->error = "";
$imgbinary = fread(fopen($dir . DS . $filename . '.png', 'r'), filesize($dir . DS . $filename . '.png'));
$base64img = 'data:image/png;base64,' . base64_encode($imgbinary);
$object->img = $base64img;
}
$object->expression = $expression;
//clean up our cache mess
shell_exec('rm ' . $dir . $filename . '.*');
$this->send($object);
}
