Invokes internal PHP function with own error handler.
| public static invokeSafe ( $function, array $args, $onError ) : mixed | ||
| $args | array | |
| return | mixed | |
/**
* Sends email.
* @return void
*/
public function send(Message $mail)
{
$tmp = clone $mail;
$tmp->setHeader('Subject', NULL);
$tmp->setHeader('To', NULL);
$parts = explode(Message::EOL . Message::EOL, $tmp->generateMessage(), 2);
$args = array(str_replace(Message::EOL, PHP_EOL, $mail->getEncodedHeader('To')), str_replace(Message::EOL, PHP_EOL, $mail->getEncodedHeader('Subject')), str_replace(Message::EOL, PHP_EOL, $parts[1]), str_replace(Message::EOL, PHP_EOL, $parts[0]));
if ($this->commandArgs) {
$args[] = (string) $this->commandArgs;
}
$res = Nette\Utils\Callback::invokeSafe('mail', $args, function ($message) use(&$info) {
$info = ": {$message}";
});
if ($res === FALSE) {
throw new Nette\InvalidStateException("Unable to send email{$info}.");
}
}
/**
* Returns the JSON representation of a value.
* @param mixed
* @param int accepts Json::PRETTY
* @return string
*/
public static function encode($value, $options = 0)
{
$flags = PHP_VERSION_ID >= 50400 ? JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES | ($options & self::PRETTY ? JSON_PRETTY_PRINT : 0) : 0;
if (PHP_VERSION_ID < 50500) {
$json = Callback::invokeSafe('json_encode', array($value, $flags), function ($message) {
// needed to receive 'recursion detected' error
throw new JsonException($message);
});
} else {
$json = json_encode($value, $flags);
}
if ($error = json_last_error()) {
$message = isset(static::$messages[$error]) ? static::$messages[$error] : (PHP_VERSION_ID >= 50500 ? json_last_error_msg() : 'Unknown error');
throw new JsonException($message, $error);
}
$json = str_replace(array("
", "
"), array('\\u2028', '\\u2029'), $json);
return $json;
}
/**
* Create a new image from the image stream in the string.
* @param string
* @param mixed detected image format
* @return Image
* @throws ImageException
*/
public static function fromString($s, &$format = NULL)
{
if (!extension_loaded('gd')) {
throw new Nette\NotSupportedException('PHP extension GD is not loaded.');
}
if (func_num_args() > 1) {
trigger_error(__METHOD__ . '() second argument $format is deprecated; use finfo_buffer() instead.', E_USER_DEPRECATED);
$format = @static::getFormatFromString($s);
}
return new static(Callback::invokeSafe('imagecreatefromstring', array($s), function ($message) {
throw new ImageException($message);
}));
}
/**
* Starts and initializes session data.
* @throws Nette\InvalidStateException
* @return void
*/
public function start()
{
if (self::$started) {
return;
}
$this->configure($this->options);
$id =& $_COOKIE[session_name()];
if (!is_string($id) || !preg_match('#^[0-9a-zA-Z,-]{22,128}\\z#i', $id)) {
unset($_COOKIE[session_name()]);
}
// session_start returns FALSE on failure only sometimes
Nette\Utils\Callback::invokeSafe('session_start', array(), function ($message) use(&$error) {
$error = $message;
});
$this->response->removeDuplicateCookies();
if ($error) {
@session_write_close();
// this is needed
throw new Nette\InvalidStateException($error);
}
self::$started = TRUE;
/* structure:
__NF: BrowserKey, Data, Meta, Time
DATA: section->variable = data
META: section->variable = Timestamp, Browser, Version
*/
$nf =& $_SESSION['__NF'];
// regenerate empty session
if (empty($nf['Time'])) {
$nf['Time'] = time();
$this->regenerated = TRUE;
}
// browser closing detection
$browserKey = $this->request->getCookie('nette-browser');
if (!$browserKey) {
$browserKey = Nette\Utils\Strings::random();
}
$browserClosed = !isset($nf['B']) || $nf['B'] !== $browserKey;
$nf['B'] = $browserKey;
// resend cookie
$this->sendCookie();
// process meta metadata
if (isset($nf['META'])) {
$now = time();
// expire section variables
foreach ($nf['META'] as $section => $metadata) {
if (is_array($metadata)) {
foreach ($metadata as $variable => $value) {
if (!empty($value['B']) && $browserClosed || !empty($value['T']) && $now > $value['T'] || isset($nf['DATA'][$section][$variable]) && is_object($nf['DATA'][$section][$variable]) && (isset($value['V']) ? $value['V'] : NULL) != Nette\Reflection\ClassType::from($nf['DATA'][$section][$variable])->getAnnotation('serializationVersion')) {
if ($variable === '') {
// expire whole section
unset($nf['META'][$section], $nf['DATA'][$section]);
continue 2;
}
unset($nf['META'][$section][$variable], $nf['DATA'][$section][$variable]);
}
}
}
}
}
if ($this->regenerated) {
$this->regenerated = FALSE;
$this->regenerateId();
}
register_shutdown_function(array($this, 'clean'));
}
/**
* Create a new image from the image stream in the string.
* @param string
* @param mixed detected image format
* @return self
* @throws ImageException
*/
public static function fromString($s, &$format = NULL)
{
if (!extension_loaded('gd')) {
throw new Nette\NotSupportedException('PHP extension GD is not loaded.');
}
if (func_num_args() > 1) {
$tmp = @getimagesizefromstring($s)[2];
// @ - strings smaller than 12 bytes causes read error
$format = in_array($tmp, [self::JPEG, self::PNG, self::GIF], TRUE) ? $tmp : NULL;
}
return new static(Callback::invokeSafe('imagecreatefromstring', [$s], function ($message) {
throw new ImageException($message);
}));
}
/**
* Starts and initializes session data.
* @throws Nette\InvalidStateException
* @return void
*/
public function start()
{
if (self::$started) {
return;
}
$this->configure($this->options);
$id = $this->request->getCookie(session_name());
if (is_string($id) && preg_match('#^[0-9a-zA-Z,-]{22,128}\\z#i', $id)) {
session_id($id);
} else {
unset($_COOKIE[session_name()]);
}
try {
// session_start returns FALSE on failure only sometimes
Nette\Utils\Callback::invokeSafe('session_start', [], function ($message) use(&$e) {
$e = new Nette\InvalidStateException($message);
});
} catch (\Exception $e) {
}
if ($e) {
@session_write_close();
// this is needed
throw $e;
}
self::$started = TRUE;
/* structure:
__NF: BrowserKey, Data, Meta, Time
DATA: section->variable = data
META: section->variable = Timestamp, Browser
*/
$nf =& $_SESSION['__NF'];
// regenerate empty session
if (empty($nf['Time'])) {
$nf['Time'] = time();
$this->regenerated = TRUE;
}
// browser closing detection
$browserKey = $this->request->getCookie('nette-browser');
if (!is_string($browserKey) || !preg_match('#^[0-9a-z]{10}\\z#', $browserKey)) {
$browserKey = Nette\Utils\Random::generate();
}
$browserClosed = !isset($nf['B']) || $nf['B'] !== $browserKey;
$nf['B'] = $browserKey;
// resend cookie
$this->sendCookie();
// process meta metadata
if (isset($nf['META'])) {
$now = time();
// expire section variables
foreach ($nf['META'] as $section => $metadata) {
if (is_array($metadata)) {
foreach ($metadata as $variable => $value) {
if (!empty($value['B']) && $browserClosed || !empty($value['T']) && $now > $value['T']) {
// whenBrowserIsClosed || Time
if ($variable === '') {
// expire whole section
unset($nf['META'][$section], $nf['DATA'][$section]);
continue 2;
}
unset($nf['META'][$section][$variable], $nf['DATA'][$section][$variable]);
}
}
}
}
}
if ($this->regenerated) {
$this->regenerated = FALSE;
$this->regenerateId();
}
register_shutdown_function([$this, 'clean']);
}
/** @internal */
public static function pcre($func, $args)
{
static $messages = array(PREG_INTERNAL_ERROR => 'Internal error', PREG_BACKTRACK_LIMIT_ERROR => 'Backtrack limit was exhausted', PREG_RECURSION_LIMIT_ERROR => 'Recursion limit was exhausted', PREG_BAD_UTF8_ERROR => 'Malformed UTF-8 data', 5 => 'Offset didn\'t correspond to the begin of a valid UTF-8 code point');
$res = Callback::invokeSafe($func, $args, function ($message) use($args) {
// compile-time error, not detectable by preg_last_error
throw new RegexpException($message . ' in pattern: ' . implode(' or ', (array) $args[0]));
});
if (($code = preg_last_error()) && ($res === NULL || !in_array($func, array('preg_filter', 'preg_replace_callback', 'preg_replace')))) {
throw new RegexpException((isset($messages[$code]) ? $messages[$code] : 'Unknown error') . ' (pattern: ' . implode(' or ', (array) $args[0]) . ')', $code);
}
return $res;
}
/**
* Create a new image from the image stream in the string.
* @param string
* @param mixed detected image format
* @return self
* @throws ImageException
*/
public static function fromString($s, &$format = NULL)
{
if (!extension_loaded('gd')) {
throw new Nette\NotSupportedException('PHP extension GD is not loaded.');
}
if (func_num_args() > 1) {
$format = @static::getFormatFromString($s);
// @ suppress trigger_error
}
return new static(Callback::invokeSafe('imagecreatefromstring', array($s), function ($message) {
throw new ImageException($message);
}));
}
/**
* Move uploaded file to new location.
* @param string
* @return self
*/
public function move($dest)
{
$dir = dirname($dest);
@mkdir($dir, 0777, TRUE);
// @ - dir may already exist
if (!is_dir($dir)) {
throw new Nette\InvalidStateException("Directory '{$dir}' cannot be created. " . error_get_last()['message']);
}
@unlink($dest);
// @ - file may not exists
Nette\Utils\Callback::invokeSafe(is_uploaded_file($this->tmpName) ? 'move_uploaded_file' : 'rename', [$this->tmpName, $dest], function ($message) use($dest) {
throw new Nette\InvalidStateException("Unable to move uploaded file '{$this->tmpName}' to '{$dest}'. {$message}");
});
@chmod($dest, 0666);
// @ - possible low permission to chmod
$this->tmpName = $dest;
return $this;
}
/** @internal */
public static function pcre($func, $args)
{
$res = Callback::invokeSafe($func, $args, function ($message) use ($args) {
// compile-time error, not detectable by preg_last_error
throw new RegexpException($message . ' in pattern: ' . implode(' or ', (array) $args[0]));
});
if (($code = preg_last_error()) // run-time error, but preg_last_error & return code are liars
&& ($res === NULL || !in_array($func, array('preg_filter', 'preg_replace_callback', 'preg_replace')))
) {
throw new RegexpException(NULL, $code, implode(' or ', (array) $args[0]));
}
return $res;
}
private static function createResource($file)
{
if (!extension_loaded('gd')) {
throw new NotSupportedException('PHP extension GD is not loaded.');
}
static $funcs = [self::JPEG => 'imagecreatefromjpeg', self::PNG => 'imagecreatefrompng', self::GIF => 'imagecreatefromgif'];
$info = @getimagesize($file);
// @ - files smaller than 12 bytes causes read error
$format = $info[2];
if (!isset($funcs[$format])) {
throw new UnknownImageFileException(is_file($file) ? "Unknown type of file '{$file}'." : "File '{$file}' not found.");
}
return Callback::invokeSafe($funcs[$format], [$file], function ($message) {
throw new ImageException($message);
});
}