/usr/share/php/PhpAmqpLib/Wire/GenericContent.php is in php-amqplib 2.4.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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namespace PhpAmqpLib\Wire;
use PhpAmqpLib\Channel\AMQPChannel;
/**
* Abstract base class for AMQP content. Subclasses should override
* the PROPERTIES attribute.
*/
abstract class GenericContent
{
/**
* @var array|AMQPChannel[]
*/
public $delivery_info = array();
/**
* @var array
*/
protected $prop_types;
/**
* @var array
*/
private $properties = array();
/**
* @var null
*/
private $serialized_properties = null;
/**
* @var array
*/
protected static $PROPERTIES = array(
"dummy" => "shortstr"
);
public function __construct($props, $prop_types = null)
{
if ($prop_types) {
$this->prop_types = $prop_types;
} else {
$this->prop_types = self::$PROPERTIES;
}
if ($props) {
$this->properties = array_intersect_key($props, $this->prop_types);
}
}
/**
* Check whether a property exists in the 'properties' dictionary
* or if present - in the 'delivery_info' dictionary.
*/
public function has($name)
{
return isset($this->properties[$name]) || isset($this->delivery_info[$name]);
}
/**
* Look for additional properties in the 'properties' dictionary,
* and if present - the 'delivery_info' dictionary.
*
* @return mixed|AMQPChannel
*/
public function get($name)
{
if (isset($this->properties[$name])) {
return $this->properties[$name];
}
if (isset($this->delivery_info[$name])) {
return $this->delivery_info[$name];
}
throw new \OutOfBoundsException("No '$name' property");
}
/**
* just return the $this::properties array.
*/
public function get_properties()
{
return $this->properties;
}
/**
* allows to set the property after creation of the object
*/
public function set($name, $value)
{
if (!array_key_exists($name, $this->prop_types)) {
throw new \OutOfBoundsException("No '$name' property");
}
$this->properties[$name] = $value;
}
/**
* Given the raw bytes containing the property-flags and
* property-list from a content-frame-header, parse and insert
* into a dictionary stored in this object as an attribute named
* 'properties'.
*
* @param AMQPReader $r
* NOTE: do not mutate $r
*/
public function load_properties($r)
{
// Read 16-bit shorts until we get one with a low bit set to zero
$flags = array();
while (true) {
$flag_bits = $r->read_short();
$flags[] = $flag_bits;
if (($flag_bits & 1) == 0) {
break;
}
}
$shift = 0;
$d = array();
foreach ($this->prop_types as $key => $proptype) {
if ($shift == 0) {
if (!$flags) {
break;
}
$flag_bits = array_shift($flags);
$shift = 15;
}
if ($flag_bits & (1 << $shift)) {
$d[$key] = $r->{'read_' . $proptype}();
}
$shift -= 1;
}
$this->properties = $d;
}
/**
* serialize the 'properties' attribute (a dictionary) into the
* raw bytes making up a set of property flags and a property
* list, suitable for putting into a content frame header.
*/
public function serialize_properties()
{
if (!empty($this->serialized_properties)) {
return $this->serialized_properties;
}
$shift = 15;
$flag_bits = 0;
$flags = array();
$raw_bytes = new AMQPWriter();
foreach ($this->prop_types as $key => $prototype) {
$val = isset($this->properties[$key]) ? $this->properties[$key] : null;
if ($val === null) {
$shift -= 1;
continue;
}
if ($shift === 0) {
$flags[] = $flag_bits;
$flag_bits = 0;
$shift = 15;
}
$flag_bits |= (1 << $shift);
if ($prototype != 'bit') {
$raw_bytes->{'write_' . $prototype}($val);
}
$shift -= 1;
}
$flags[] = $flag_bits;
$result = new AMQPWriter();
foreach ($flags as $flag_bits) {
$result->write_short($flag_bits);
}
$result->write($raw_bytes->getvalue());
$this->serialized_properties = $result->getvalue();
return $this->serialized_properties;
}
}
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