This file is indexed.

/usr/share/php/PhpAmqpLib/Wire/AMQPReader.php is in php-amqplib 2.6.3-1.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
<?php
namespace PhpAmqpLib\Wire;

use PhpAmqpLib\Exception\AMQPInvalidArgumentException;
use PhpAmqpLib\Exception\AMQPOutOfBoundsException;
use PhpAmqpLib\Exception\AMQPRuntimeException;
use PhpAmqpLib\Exception\AMQPTimeoutException;
use PhpAmqpLib\Exception\AMQPIOWaitException;
use PhpAmqpLib\Helper\MiscHelper;
use PhpAmqpLib\Wire\IO\AbstractIO;

/**
 * This class can read from a string or from a stream
 *
 * TODO : split this class: AMQPStreamReader and a AMQPBufferReader
 */
class AMQPReader extends AbstractClient
{
    const BIT = 1;
    const OCTET = 1;
    const SHORTSTR = 1;
    const SHORT = 2;
    const LONG = 4;
    const SIGNED_LONG = 4;
    const READ_PHP_INT = 4; // use READ_ to avoid possible clashes with PHP
    const LONGLONG = 8;
    const TIMESTAMP = 8;

    /** @var string */
    protected $str;

    /** @var int */
    protected $str_length;

    /** @var int */
    protected $offset;

    /** @var int */
    protected $bitcount;

    /** @var bool */
    protected $is64bits;

    /** @var int */
    protected $timeout;

    /** @var int */
    protected $bits;

    /** @var \PhpAmqpLib\Wire\IO\AbstractIO */
    protected $io;

    /**
     * @param string $str
     * @param AbstractIO $io
     * @param int $timeout
     */
    public function __construct($str, AbstractIO $io = null, $timeout = 0)
    {
        parent::__construct();

        $this->str = $str;
        $this->str_length = mb_strlen($this->str, 'ASCII');
        $this->io = $io;
        $this->offset = 0;
        $this->bitcount = $this->bits = 0;
        $this->timeout = $timeout;
    }

    /**
     * Resets the object from the injected param
     *
     * Used to not need to create a new AMQPReader instance every time.
     * when we can just pass a string and reset the object state.
     * NOTE: since we are working with strings we don't need to pass an AbstractIO
     *       or a timeout.
     *
     * @param string $str
     */
    public function reuse($str)
    {
        $this->str = $str;
        $this->str_length = mb_strlen($this->str, 'ASCII');
        $this->offset = 0;
        $this->bitcount = $this->bits = 0;
    }

    /**
     * Closes the stream
     */
    public function close()
    {
        if ($this->io) {
            $this->io->close();
        }
    }

    /**
     * @param int $n
     * @return string
     */
    public function read($n)
    {
        $this->bitcount = $this->bits = 0;

        return $this->rawread($n);
    }

    /**
     * Waits until some data is retrieved from the socket.
     *
     * AMQPTimeoutException can be raised if the timeout is set
     *
     * @throws \PhpAmqpLib\Exception\AMQPIOWaitException
     * @throws \PhpAmqpLib\Exception\AMQPTimeoutException
     */
    protected function wait()
    {
        if ($this->getTimeout() == 0) {
            return null;
        }

        // wait ..
        list($sec, $usec) = MiscHelper::splitSecondsMicroseconds($this->getTimeout());
        $result = $this->io->select($sec, $usec);

        if ($result === false) {
            throw new AMQPIOWaitException('A network error occured while awaiting for incoming data');
        }

        if ($result === 0) {
            throw new AMQPTimeoutException(sprintf(
                'The connection timed out after %s sec while awaiting incoming data',
                $this->getTimeout()
            ));
        }
    }

    /**
     * @param int $n
     * @return string
     * @throws \RuntimeException
     * @throws \PhpAmqpLib\Exception\AMQPRuntimeException
     */
    protected function rawread($n)
    {
        if ($this->io) {
            $this->wait();
            $res = $this->io->read($n);
            $this->offset += $n;

            return $res;
        }

        if ($this->str_length < $n) {
            throw new AMQPRuntimeException(sprintf(
                'Error reading data. Requested %s bytes while string buffer has only %s',
                $n,
                $this->str_length
            ));
        }

        $res = mb_substr($this->str, 0, $n, 'ASCII');
        $this->str = mb_substr($this->str, $n, mb_strlen($this->str, 'ASCII') - $n, 'ASCII');
        $this->str_length -= $n;
        $this->offset += $n;

        return $res;
    }

    /**
     * @return bool
     */
    public function read_bit()
    {
        if (!$this->bitcount) {
            $this->bits = ord($this->rawread(1));
            $this->bitcount = 8;
        }

        $result = ($this->bits & 1) == 1;
        $this->bits >>= 1;
        $this->bitcount -= 1;

        return $result;
    }

    /**
     * @return mixed
     */
    public function read_octet()
    {
        $this->bitcount = $this->bits = 0;
        list(, $res) = unpack('C', $this->rawread(1));

        return $res;
    }

    /**
     * @return mixed
     */
    public function read_signed_octet()
    {
        $this->bitcount = $this->bits = 0;
        list(, $res) = unpack('c', $this->rawread(1));

        return $res;
    }

    /**
     * @return mixed
     */
    public function read_short()
    {
        $this->bitcount = $this->bits = 0;
        list(, $res) = unpack('n', $this->rawread(2));

        return $res;
    }

    /**
     * @return mixed
     */
    public function read_signed_short()
    {
        $this->bitcount = $this->bits = 0;
        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!
     */
    public function read_php_int()
    {
        list(, $res) = unpack('N', $this->rawread(4));

        if ($this->is64bits) {
            return (int) sprintf('%u', $res);
        }

        return $res;
    }

    /**
     * PHP does not have unsigned 32 bit int,
     * so we return it as a string
     *
     * @return string
     */
    public function read_long()
    {
        $this->bitcount = $this->bits = 0;
        list(, $res) = unpack('N', $this->rawread(4));

        return !$this->is64bits && self::getLongMSB($res) ? sprintf('%u', $res) : $res;
    }

    /**
     * @return integer
     */
    private function read_signed_long()
    {
        $this->bitcount = $this->bits = 0;
        list(, $res) = unpack('l', $this->correctEndianness($this->rawread(4)));

        return $res;
    }

    /**
     * Even on 64 bit systems PHP integers are singed.
     * Since we need an unsigned value here we return it
     * as a string.
     *
     * @return string
     */
    public function read_longlong()
    {
        $this->bitcount = $this->bits = 0;

        list(, $hi, $lo) = unpack('N2', $this->rawread(8));
        $msb = self::getLongMSB($hi);

        if (!$this->is64bits) {
            if ($msb) {
                $hi = sprintf('%u', $hi);
            }
            if (self::getLongMSB($lo)) {
                $lo = sprintf('%u', $lo);
            }
        }

        return bcadd($this->is64bits && !$msb ? $hi << 32 : bcmul($hi, '4294967296', 0), $lo, 0);
    }

    /**
     * @return string
     */
    public function read_signed_longlong()
    {
        $this->bitcount = $this->bits = 0;

        list(, $hi, $lo) = unpack('N2', $this->rawread(8));

        if ($this->is64bits) {
            return bcadd($hi << 32, $lo, 0);
        } else {
            return bcadd(bcmul($hi, '4294967296', 0), self::getLongMSB($lo) ? sprintf('%u', $lo) : $lo, 0);
        }
    }

    /**
     * @param int $longInt
     * @return bool
     */
    private static function getLongMSB($longInt)
    {
        return (bool) ($longInt & 0x80000000);
    }

    /**
     * Read a utf-8 encoded string that's stored in up to
     * 255 bytes.  Return it decoded as a PHP unicode object.
     */
    public function read_shortstr()
    {
        $this->bitcount = $this->bits = 0;
        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.
     */
    public function read_longstr()
    {
        $this->bitcount = $this->bits = 0;
        $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.
     */
    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 $returnObject Whether to return AMQPArray instance instead of plain array
     * @return array|AMQPTable
     */
    public function read_table($returnObject = false)
    {
        $this->bitcount = $this->bits = 0;
        $tlen = $this->read_php_int();

        if ($tlen < 0) {
            throw new AMQPOutOfBoundsException('Table is longer than supported');
        }

        $table_data = new AMQPReader($this->rawread($tlen), null);
        $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->bitcount = $this->bits = 0;

        // 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);
    }

    /**
     * Reads the next value as the provided field type.
     *
     * @param int $fieldType One of AMQPAbstractCollection::T_* constants
     * @param bool $collectionsAsObjects Description
     * @return mixed
     * @throws \PhpAmqpLib\Exception\AMQPRuntimeException
     */
    public function read_value($fieldType, $collectionsAsObjects = false)
    {
        $this->bitcount = $this->bits = 0;

        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:
                $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->read_signed_long();
                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->read_signed_long();
                $val = new AMQPDecimal($n, $e);
                break;
            case AMQPAbstractCollection::T_TIMESTAMP:
                $val = $this->read_timestamp();
                break;
            case AMQPAbstractCollection::T_BOOL:
                $val = $this->read_octet();
                break;
            case AMQPAbstractCollection::T_STRING_SHORT:
                $val = $this->read_shortstr();
                break;
            case AMQPAbstractCollection::T_STRING_LONG:
                $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;
            default:
                throw new AMQPInvalidArgumentException(sprintf(
                    'Unsupported type "%s"',
                    $fieldType
                ));
        }

        return isset($val) ? $val : null;
    }

    /**
     * @return int
     */
    protected function tell()
    {
        return $this->offset;
    }

    /**
     * Sets the timeout (second)
     *
     * @param int $timeout
     */
    public function setTimeout($timeout)
    {
        $this->timeout = $timeout;
    }

    /**
     * @return int
     */
    public function getTimeout()
    {
        return $this->timeout;
    }
}