Server : Apache System : Linux server2.corals.io 4.18.0-348.2.1.el8_5.x86_64 #1 SMP Mon Nov 15 09:17:08 EST 2021 x86_64 User : corals ( 1002) PHP Version : 7.4.33 Disable Function : exec,passthru,shell_exec,system Directory : /home/corals/mautic.corals.io/vendor/php-amqplib/php-amqplib/PhpAmqpLib/Wire/ |
<?php
namespace PhpAmqpLib\Wire;
use PhpAmqpLib\Channel\Frame;
use PhpAmqpLib\Exception\AMQPInvalidArgumentException;
use PhpAmqpLib\Exception\AMQPOutOfBoundsException;
use PhpAmqpLib\Helper\BigInteger;
abstract class AMQPReader extends AMQPByteStream
{
/** @var int */
protected $offset = 0;
/** @var int */
protected $bitcount = 0;
/** @var int */
protected $bits = 0;
/**
* Close the byte stream.
*/
abstract public function close(): void;
abstract protected function rawread(int $n): string;
/**
* @param int $n
* @return string
*/
public function read($n)
{
$this->resetCounters();
return $this->rawread($n);
}
public function read_bit(): bool
{
if (empty($this->bitcount)) {
$this->bits = ord($this->rawread(1));
$this->bitcount = 8;
}
$result = ($this->bits & 1) === 1;
$this->bits >>= 1;
$this->bitcount--;
return $result;
}
/**
* @return int
*/
public function read_octet()
{
$this->resetCounters();
list(, $res) = unpack('C', $this->rawread(1));
return $res;
}
/**
* @return int
*/
public function read_signed_octet()
{
$this->resetCounters();
list(, $res) = unpack('c', $this->rawread(1));
return $res;
}
/**
* @return int
*/
public function read_short()
{
$this->resetCounters();
list(, $res) = unpack('n', $this->rawread(2));
return $res;
}
/**
* @return int
*/
public function read_signed_short()
{
$this->resetCounters();
list(, $res) = unpack('s', $this->correctEndianness($this->rawread(2)));
return $res;
}
/**
* Reads 32 bit integer in big-endian byte order.
*
* On 64 bit systems it will return always unsigned int
* value in 0..2^32 range.
*
* On 32 bit systems it will return signed int value in
* -2^31...+2^31 range.
*
* Use with caution!
* @return int|string
*/
public function read_php_int()
{
list(, $res) = unpack('N', $this->rawread(4));
if (self::PLATFORM_64BIT) {
return (int) sprintf('%u', $res);
}
return $res;
}
/**
* PHP does not have unsigned 32 bit int,
* so we return it as a string
*
* @return int|string
*/
public function read_long()
{
$this->resetCounters();
list(, $res) = unpack('N', $this->rawread(4));
if (!self::PLATFORM_64BIT && $this->getLongMSB($res)) {
return sprintf('%u', $res);
}
return $res;
}
/**
* @return int
*/
private function readSignedLong()
{
$this->resetCounters();
list(, $res) = unpack('l', $this->correctEndianness($this->rawread(4)));
return $res;
}
/**
* Even on 64 bit systems PHP integers are signed.
* Since we need an unsigned value here we return it as a string.
*
* @return int|string
*/
public function read_longlong()
{
$this->resetCounters();
$bytes = $this->rawread(8);
if (self::PLATFORM_64BIT) {
// we can "unpack" if MSB bit is 0 (at most 63 bit integer), fallback to BigInteger otherwise
if (!$this->getMSB($bytes)) {
$res = unpack('J', $bytes);
return $res[1];
}
} else {
// on 32-bit systems we can "unpack" up to 31 bits integer
list(, $hi, $lo) = unpack('N2', $bytes);
if ($hi === 0 && $lo > 0) {
return $lo;
}
}
$var = new BigInteger($bytes, 256);
return $var->toString();
}
/**
* @return int|string
*/
public function read_signed_longlong()
{
$this->resetCounters();
$bytes = $this->rawread(8);
if (self::PLATFORM_64BIT) {
$res = unpack('q', $this->correctEndianness($bytes));
return $res[1];
} else {
// on 32-bit systems we can "unpack" up to 31 bits integer
list(, $hi, $lo) = unpack('N2', $bytes);
if ($hi === 0 && $lo > 0) {
// positive and less than 2^31-1
return $lo;
}
// negative and more than -2^31
if ($hi === -1 && $this->getLongMSB($lo)) {
return $lo;
}
}
$var = new BigInteger($bytes, -256);
return $var->toString();
}
/**
* @return float
*/
public function read_float()
{
$this->resetCounters();
list(, $res) = unpack('G', $this->rawread(4));
return (float)$res;
}
/**
* @return float
*/
public function read_double()
{
$this->resetCounters();
list(, $res) = unpack('E', $this->rawread(8));
return (float)$res;
}
/**
* Read a utf-8 encoded string that's stored in up to
* 255 bytes. Return it decoded as a PHP unicode object.
* @return string
*/
public function read_shortstr()
{
$this->resetCounters();
list(, $slen) = unpack('C', $this->rawread(1));
return $this->rawread($slen);
}
/**
* Read a string that's up to 2**32 bytes, the encoding
* isn't specified in the AMQP spec, so just return it as
* a plain PHP string.
* @return string
*/
public function read_longstr()
{
$this->resetCounters();
$slen = $this->read_php_int();
if ($slen < 0) {
throw new AMQPOutOfBoundsException('Strings longer than supported on this platform');
}
return $this->rawread($slen);
}
/**
* Read and AMQP timestamp, which is a 64-bit integer representing
* seconds since the Unix epoch in 1-second resolution.
* @return int|string
*/
public function read_timestamp()
{
return $this->read_longlong();
}
/**
* Read an AMQP table, and return as a PHP array. keys are strings,
* values are (type,value) tuples.
*
* @param bool $returnObject Whether to return AMQPArray instance instead of plain array
* @return array|AMQPTable
*/
public function read_table(bool $returnObject = false)
{
$this->resetCounters();
$tlen = $this->read_php_int();
if ($tlen < 0) {
throw new AMQPOutOfBoundsException('Table is longer than supported');
}
$table_data = new AMQPBufferReader($this->rawread($tlen));
$result = $returnObject ? new AMQPTable() : array();
while ($table_data->tell() < $tlen) {
$name = $table_data->read_shortstr();
$ftype = AMQPAbstractCollection::getDataTypeForSymbol($ftypeSym = $table_data->rawread(1));
$val = $table_data->read_value($ftype, $returnObject);
$returnObject ? $result->set($name, $val, $ftype) : $result[$name] = array($ftypeSym, $val);
}
return $result;
}
/**
* @return array|AMQPTable
*/
public function read_table_object()
{
return $this->read_table(true);
}
/**
* Reads the array in the next value.
*
* @param bool $returnObject Whether to return AMQPArray instance instead of plain array
* @return array|AMQPArray
*/
public function read_array($returnObject = false)
{
$this->resetCounters();
// Determine array length and its end position
$arrayLength = $this->read_php_int();
$endOffset = $this->offset + $arrayLength;
$result = $returnObject ? new AMQPArray() : array();
// Read values until we reach the end of the array
while ($this->offset < $endOffset) {
$fieldType = AMQPAbstractCollection::getDataTypeForSymbol($this->rawread(1));
$fieldValue = $this->read_value($fieldType, $returnObject);
$returnObject ? $result->push($fieldValue, $fieldType) : $result[] = $fieldValue;
}
return $result;
}
/**
* @return array|AMQPArray
*/
public function read_array_object()
{
return $this->read_array(true);
}
/**
* @return array{type:int, channel:int, size:int}
*/
public function readFrameHeader(): array
{
return unpack('Ctype/nchannel/Nsize', $this->rawread(Frame::FRAME_HEADER_SIZE));
}
/**
* Reads the next value as the provided field type.
*
* @param int $fieldType One of AMQPAbstractCollection::T_* constants
* @param bool $collectionsAsObjects Description
* @return mixed
* @throws \PhpAmqpLib\Exception\AMQPDataReadException
*/
public function read_value(int $fieldType, bool $collectionsAsObjects = false)
{
$this->resetCounters();
switch ($fieldType) {
case AMQPAbstractCollection::T_INT_SHORTSHORT:
//according to AMQP091 spec, 'b' is not bit, it is short-short-int, also valid for rabbit/qpid
//$val=$this->read_bit();
$val = $this->read_signed_octet();
break;
case AMQPAbstractCollection::T_INT_SHORTSHORT_U:
case AMQPAbstractCollection::T_BOOL:
$val = $this->read_octet();
break;
case AMQPAbstractCollection::T_INT_SHORT:
$val = $this->read_signed_short();
break;
case AMQPAbstractCollection::T_INT_SHORT_U:
$val = $this->read_short();
break;
case AMQPAbstractCollection::T_INT_LONG:
$val = $this->readSignedLong();
break;
case AMQPAbstractCollection::T_INT_LONG_U:
$val = $this->read_long();
break;
case AMQPAbstractCollection::T_INT_LONGLONG:
$val = $this->read_signed_longlong();
break;
case AMQPAbstractCollection::T_INT_LONGLONG_U:
$val = $this->read_longlong();
break;
case AMQPAbstractCollection::T_DECIMAL:
$e = $this->read_octet();
$n = $this->readSignedLong();
$val = new AMQPDecimal($n, $e);
break;
case AMQPAbstractCollection::T_TIMESTAMP:
$val = $this->read_timestamp();
break;
case AMQPAbstractCollection::T_STRING_SHORT:
$val = $this->read_shortstr();
break;
case AMQPAbstractCollection::T_STRING_LONG:
case AMQPAbstractCollection::T_BYTES:
$val = $this->read_longstr();
break;
case AMQPAbstractCollection::T_ARRAY:
$val = $this->read_array($collectionsAsObjects);
break;
case AMQPAbstractCollection::T_TABLE:
$val = $this->read_table($collectionsAsObjects);
break;
case AMQPAbstractCollection::T_VOID:
$val = null;
break;
case AMQPAbstractCollection::T_FLOAT:
$val = $this->read_float();
break;
case AMQPAbstractCollection::T_DOUBLE:
$val = $this->read_double();
break;
default:
throw new AMQPInvalidArgumentException(sprintf(
'Unsupported type "%s"',
$fieldType
));
}
return $val;
}
protected function tell(): int
{
return $this->offset;
}
protected function resetCounters(): void
{
$this->bitcount = $this->bits = 0;
}
}