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template.php
template.php 16.24 KiB
<?php
/**
* ownCloud
*
* @author Frank Karlitschek
* @author Jakob Sack
* @copyright 2012 Frank Karlitschek frank@owncloud.org
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
* License as published by the Free Software Foundation; either
* version 3 of the License, or any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU AFFERO GENERAL PUBLIC LICENSE for more details.
*
* You should have received a copy of the GNU Affero General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*/
/**
* Prints an XSS escaped string
* @param string $string the string which will be escaped and printed
*/
function p($string) {
print(OC_Util::sanitizeHTML($string));
}
/**
* Prints an unescaped string
* @param string $string the string which will be printed as it is
*/
function print_unescaped($string) {
print($string);
}
/**
* @brief make OC_Helper::linkTo available as a simple function
* @param string $app app
* @param string $file file
* @param array $args array with param=>value, will be appended to the returned url
* @return string link to the file
*
* For further information have a look at OC_Helper::linkTo
*/
function link_to( $app, $file, $args = array() ) {
return OC_Helper::linkTo( $app, $file, $args );
}
/**
* @brief make OC_Helper::imagePath available as a simple function
* @param string $app app
* @param string $image image
* @return string link to the image
*
* For further information have a look at OC_Helper::imagePath
*/
function image_path( $app, $image ) {
return OC_Helper::imagePath( $app, $image );
}
/**
* @brief make OC_Helper::mimetypeIcon available as a simple function
* @param string $mimetype mimetype
* @return string link to the image
*
* For further information have a look at OC_Helper::mimetypeIcon */
function mimetype_icon( $mimetype ) {
return OC_Helper::mimetypeIcon( $mimetype );
}
/**
* @brief make OC_Helper::humanFileSize available as a simple function
* @param int $bytes size in bytes
* @return string size as string
*
* For further information have a look at OC_Helper::humanFileSize
*/
function human_file_size( $bytes ) {
return OC_Helper::humanFileSize( $bytes );
}
function relative_modified_date($timestamp) {
$l=OC_L10N::get('lib');
$timediff = time() - $timestamp;
$diffminutes = round($timediff/60);
$diffhours = round($diffminutes/60);
$diffdays = round($diffhours/24);
$diffmonths = round($diffdays/31);
if($timediff < 60) { return $l->t('seconds ago'); }
else if($timediff < 120) { return $l->t('1 minute ago'); }
else if($timediff < 3600) { return $l->t('%d minutes ago', $diffminutes); }
else if($timediff < 7200) { return $l->t('1 hour ago'); }
else if($timediff < 86400) { return $l->t('%d hours ago', $diffhours); }
else if((date('G')-$diffhours) > 0) { return $l->t('today'); }
else if((date('G')-$diffhours) > -24) { return $l->t('yesterday'); }
else if($timediff < 2678400) { return $l->t('%d days ago', $diffdays); }
else if($timediff < 5184000) { return $l->t('last month'); }
else if((date('n')-$diffmonths) > 0) { return $l->t('%d months ago', $diffmonths); }
else if($timediff < 63113852) { return $l->t('last year'); }
else { return $l->t('years ago'); }
}
function html_select_options($options, $selected, $params=array()) {
if (!is_array($selected)) {
$selected=array($selected);
}
if (isset($params['combine']) && $params['combine']) {
$options = array_combine($options, $options);
}
$value_name = $label_name = false;
if (isset($params['value'])) {
$value_name = $params['value'];
}
if (isset($params['label'])) {
$label_name = $params['label'];
}
$html = '';
foreach($options as $value => $label) {
if ($value_name && is_array($label)) {
$value = $label[$value_name];
}
if ($label_name && is_array($label)) {
$label = $label[$label_name];
}
$select = in_array($value, $selected) ? ' selected="selected"' : '';
$html .= '<option value="' . OC_Util::sanitizeHTML($value) . '"' . $select . '>' . OC_Util::sanitizeHTML($label) . '</option>'."\n";
}
return $html;
}
/**
* This class provides the templates for owncloud.
*/
class OC_Template{ private $renderas; // Create a full page?
private $application; // template Application
private $vars; // Vars
private $template; // The path to the template
private $l10n; // The l10n-Object
private $headers=array(); //custom headers
/**
* @brief Constructor
* @param string $app app providing the template
* @param string $file name of the template file (without suffix)
* @param string $renderas = ""; produce a full page
* @return OC_Template object
*
* This function creates an OC_Template object.
*
* If $renderas is set, OC_Template will try to produce a full page in the
* according layout. For now, renderas can be set to "guest", "user" or
* "admin".
*/
public function __construct( $app, $name, $renderas = "" ) {
// Set the private data
$this->renderas = $renderas;
$this->application = $app;
$this->vars = array();
$this->vars['requesttoken'] = OC::$session ? OC_Util::callRegister() : '';
$parts = explode('/', $app); // fix translation when app is something like core/lostpassword
$this->l10n = OC_L10N::get($parts[0]);
// Some headers to enhance security
header('X-XSS-Protection: 1; mode=block'); // Enforce browser based XSS filters
header('X-Content-Type-Options: nosniff'); // Disable sniffing the content type for IE
// iFrame Restriction Policy
$xFramePolicy = OC_Config::getValue('xframe_restriction', true);
if($xFramePolicy) {
header('X-Frame-Options: Sameorigin'); // Disallow iFraming from other domains
}
// Content Security Policy
// If you change the standard policy, please also change it in config.sample.php
$policy = OC_Config::getValue('custom_csp_policy',
'default-src \'self\'; '
.'script-src \'self\' \'unsafe-eval\'; '
.'style-src \'self\' \'unsafe-inline\'; '
.'frame-src *; '
.'img-src *; '
.'font-src \'self\' data:; '
.'media-src *');
header('Content-Security-Policy:'.$policy); // Standard
$this->findTemplate($name);
}
/**
* autodetect the formfactor of the used device
* default -> the normal desktop browser interface
* mobile -> interface for smartphones
* tablet -> interface for tablets
* standalone -> the default interface but without header, footer and
* sidebar, just the application. Useful to use just a specific
* app on the desktop in a standalone window.
*/
public static function detectFormfactor() {
// please add more useragent strings for other devices
if(isset($_SERVER['HTTP_USER_AGENT'])) {
if(stripos($_SERVER['HTTP_USER_AGENT'], 'ipad')>0) {
$mode='tablet';
}elseif(stripos($_SERVER['HTTP_USER_AGENT'], 'iphone')>0) {
$mode='mobile'; }elseif((stripos($_SERVER['HTTP_USER_AGENT'], 'N9')>0)
and (stripos($_SERVER['HTTP_USER_AGENT'], 'nokia')>0)) {
$mode='mobile';
}else{
$mode='default';
}
}else{
$mode='default';
}
return($mode);
}
/**
* @brief Returns the formfactor extension for current formfactor
*/
static public function getFormFactorExtension()
{
if (!\OC::$session) {
return '';
}
// if the formfactor is not yet autodetected do the
// autodetection now. For possible formfactors check the
// detectFormfactor documentation
if (!\OC::$session->exists('formfactor')) {
\OC::$session->set('formfactor', self::detectFormfactor());
}
// allow manual override via GET parameter
if(isset($_GET['formfactor'])) {
\OC::$session->set('formfactor', $_GET['formfactor']);
}
$formfactor = \OC::$session->get('formfactor');
if($formfactor=='default') {
$fext='';
}elseif($formfactor=='mobile') {
$fext='.mobile';
}elseif($formfactor=='tablet') {
$fext='.tablet';
}elseif($formfactor=='standalone') {
$fext='.standalone';
}else{
$fext='';
}
return $fext;
}
/**
* @brief find the template with the given name
* @param string $name of the template file (without suffix)
*
* Will select the template file for the selected theme and formfactor.
* Checking all the possible locations.
*/
protected function findTemplate($name)
{
// Read the selected theme from the config file
$theme = OC_Util::getTheme();
// Read the detected formfactor and use the right file name.
$fext = self::getFormFactorExtension();
$app = $this->application;
// Check if it is a app template or not.
if( $app != "" ) {
// Check if the app is in the app folder or in the root
if( file_exists(OC_App::getAppPath($app)."/templates/" )) {
// Check if the template is overwritten by the selected theme
if ($this->checkPathForTemplate(OC::$SERVERROOT."/themes/$theme/apps/$app/templates/", $name, $fext)) {
}elseif ($this->checkPathForTemplate(OC_App::getAppPath($app)."/templates/", $name, $fext)) {
}
}else{ // Check if the template is overwritten by the selected theme
if ($this->checkPathForTemplate(OC::$SERVERROOT."/themes/$theme/$app/templates/", $name, $fext)) {
}elseif ($this->checkPathForTemplate(OC::$SERVERROOT."/$app/templates/", $name, $fext)) {
}else{
echo('template not found: template:'.$name.' formfactor:'.$fext
.' webroot:'.OC::$WEBROOT.' serverroot:'.OC::$SERVERROOT);
die();
}
}
}else{
// Check if the template is overwritten by the selected theme
if ($this->checkPathForTemplate(OC::$SERVERROOT."/themes/$theme/core/templates/", $name, $fext)) {
} elseif ($this->checkPathForTemplate(OC::$SERVERROOT."/core/templates/", $name, $fext)) {
}else{
echo('template not found: template:'.$name.' formfactor:'.$fext
.' webroot:'.OC::$WEBROOT.' serverroot:'.OC::$SERVERROOT);
die();
}
}
}
/**
* @brief check Path For Template with and without $fext
* @param string $path to check
* @param string $name of the template file (without suffix)
* @param string $fext formfactor extension
* @return bool true when found
*
* Will set $this->template and $this->path if there is a template at
* the specific $path
*/
protected function checkPathForTemplate($path, $name, $fext)
{
if ($name =='') return false;
$template = null;
if( is_file( $path.$name.$fext.'.php' )) {
$template = $path.$name.$fext.'.php';
}elseif( is_file( $path.$name.'.php' )) {
$template = $path.$name.'.php';
}
if ($template) {
$this->template = $template;
$this->path = $path;
return true;
}
return false;
}
/**
* @brief Assign variables
* @param string $key key
* @param string $value value
* @return bool
*
* This function assigns a variable. It can be accessed via $_[$key] in
* the template.
*
* If the key existed before, it will be overwritten
*/
public function assign( $key, $value) {
$this->vars[$key] = $value;
return true;
}
/**
* @brief Appends a variable
* @param string $key key
* @param string $value value
* @return bool *
* This function assigns a variable in an array context. If the key already
* exists, the value will be appended. It can be accessed via
* $_[$key][$position] in the template.
*/
public function append( $key, $value ) {
if( array_key_exists( $key, $this->vars )) {
$this->vars[$key][] = $value;
}
else{
$this->vars[$key] = array( $value );
}
}
/**
* @brief Add a custom element to the header
* @param string $tag tag name of the element
* @param array $attributes array of attrobutes for the element
* @param string $text the text content for the element
*/
public function addHeader( $tag, $attributes, $text='') {
$this->headers[]=array('tag'=>$tag,'attributes'=>$attributes, 'text'=>$text);
}
/**
* @brief Prints the proceeded template
* @return bool
*
* This function proceeds the template and prints its output.
*/
public function printPage() {
$data = $this->fetchPage();
if( $data === false ) {
return false;
}
else{
print $data;
return true;
}
}
/**
* @brief Proceeds the template
* @return bool
*
* This function proceeds the template. If $this->renderas is set, it
* will produce a full page.
*/
public function fetchPage() {
$data = $this->_fetch();
if( $this->renderas ) {
$page = new OC_TemplateLayout($this->renderas);
// Add custom headers
$page->assign('headers', $this->headers, false);
foreach(OC_Util::$headers as $header) {
$page->append('headers', $header);
}
$page->assign( "content", $data, false );
return $page->fetchPage();
}
else{
return $data;
}
}
/**
* @brief doing the actual work * @return string content
*
* Includes the template file, fetches its output
*/
private function _fetch() {
// Register the variables
$_ = $this->vars;
$l = $this->l10n;
// Execute the template
ob_start();
include $this->template; // <-- we have to use include because we pass $_!
$data = ob_get_contents();
@ob_end_clean();
// return the data
return $data;
}
/**
* @brief Include template
* @return string returns content of included template
*
* Includes another template. use <?php echo $this->inc('template'); ?> to
* do this.
*/
public function inc( $file, $additionalparams = null ) {
$_ = $this->vars;
$l = $this->l10n;
if( !is_null($additionalparams)) {
$_ = array_merge( $additionalparams, $this->vars );
}
// Include
ob_start();
include $this->path.$file.'.php';
$data = ob_get_contents();
@ob_end_clean();
// Return data
return $data;
}
/**
* @brief Shortcut to print a simple page for users
* @param string $application The application we render the template for
* @param string $name Name of the template
* @param array $parameters Parameters for the template
* @return bool
*/
public static function printUserPage( $application, $name, $parameters = array() ) {
$content = new OC_Template( $application, $name, "user" );
foreach( $parameters as $key => $value ) {
$content->assign( $key, $value );
}
print $content->printPage();
}
/**
* @brief Shortcut to print a simple page for admins
* @param string $application The application we render the template for
* @param string $name Name of the template
* @param array $parameters Parameters for the template
* @return bool
*/
public static function printAdminPage( $application, $name, $parameters = array() ) {
$content = new OC_Template( $application, $name, "admin" );
foreach( $parameters as $key => $value ) {
$content->assign( $key, $value ); }
return $content->printPage();
}
/**
* @brief Shortcut to print a simple page for guests
* @param string $application The application we render the template for
* @param string $name Name of the template
* @param string $parameters Parameters for the template
* @return bool
*/
public static function printGuestPage( $application, $name, $parameters = array() ) {
$content = new OC_Template( $application, $name, "guest" );
foreach( $parameters as $key => $value ) {
$content->assign( $key, $value );
}
return $content->printPage();
}
/**
* @brief Print a fatal error page and terminates the script
* @param string $error The error message to show
* @param string $hint An optional hint message
* Warning: All data passed to $hint needs to get sanitized using OC_Util::sanitizeHTML
*/
public static function printErrorPage( $error_msg, $hint = '' ) {
$content = new OC_Template( '', 'error', 'error' );
$errors = array(array('error' => $error_msg, 'hint' => $hint));
$content->assign( 'errors', $errors );
$content->printPage();
die();
}
/**
* print error page using Exception details
* @param Exception $exception
*/
public static function printExceptionErrorPage(Exception $exception) {
$error_msg = $exception->getMessage();
if ($exception->getCode()) {
$error_msg = '['.$exception->getCode().'] '.$error_msg;
}
$hint = $exception->getTraceAsString();
if (!empty($hint)) {
$hint = '<pre>'.$hint.'</pre>';
}
while (method_exists($exception,'previous') && $exception = $exception->previous()) {
$error_msg .= '<br/>Caused by: ';
if ($exception->getCode()) {
$error_msg .= '['.$exception->getCode().'] ';
}
$error_msg .= $exception->getMessage();
};
self::printErrorPage($error_msg, $hint);
}
}