This file is indexed.

/usr/share/php/PEAR/Validate.php is in php-pear 5.3.10-1ubuntu3.26.

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
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
<?php
/**
 * PEAR_Validate
 *
 * PHP versions 4 and 5
 *
 * @category   pear
 * @package    PEAR
 * @author     Greg Beaver <cellog@php.net>
 * @copyright  1997-2009 The Authors
 * @license    http://opensource.org/licenses/bsd-license.php New BSD License
 * @version    CVS: $Id: Validate.php 313023 2011-07-06 19:17:11Z dufuz $
 * @link       http://pear.php.net/package/PEAR
 * @since      File available since Release 1.4.0a1
 */
/**#@+
 * Constants for install stage
 */
define('PEAR_VALIDATE_INSTALLING', 1);
define('PEAR_VALIDATE_UNINSTALLING', 2); // this is not bit-mapped like the others
define('PEAR_VALIDATE_NORMAL', 3);
define('PEAR_VALIDATE_DOWNLOADING', 4); // this is not bit-mapped like the others
define('PEAR_VALIDATE_PACKAGING', 7);
/**#@-*/
require_once 'PEAR/Common.php';
require_once 'PEAR/Validator/PECL.php';

/**
 * Validation class for package.xml - channel-level advanced validation
 * @category   pear
 * @package    PEAR
 * @author     Greg Beaver <cellog@php.net>
 * @copyright  1997-2009 The Authors
 * @license    http://opensource.org/licenses/bsd-license.php New BSD License
 * @version    Release: 1.9.4
 * @link       http://pear.php.net/package/PEAR
 * @since      Class available since Release 1.4.0a1
 */
class PEAR_Validate
{
    var $packageregex = _PEAR_COMMON_PACKAGE_NAME_PREG;
    /**
     * @var PEAR_PackageFile_v1|PEAR_PackageFile_v2
     */
    var $_packagexml;
    /**
     * @var int one of the PEAR_VALIDATE_* constants
     */
    var $_state = PEAR_VALIDATE_NORMAL;
    /**
     * Format: ('error' => array('field' => name, 'reason' => reason), 'warning' => same)
     * @var array
     * @access private
     */
    var $_failures = array('error' => array(), 'warning' => array());

    /**
     * Override this method to handle validation of normal package names
     * @param string
     * @return bool
     * @access protected
     */
    function _validPackageName($name)
    {
        return (bool) preg_match('/^' . $this->packageregex . '\\z/', $name);
    }

    /**
     * @param string package name to validate
     * @param string name of channel-specific validation package
     * @final
     */
    function validPackageName($name, $validatepackagename = false)
    {
        if ($validatepackagename) {
            if (strtolower($name) == strtolower($validatepackagename)) {
                return (bool) preg_match('/^[a-zA-Z0-9_]+(?:\.[a-zA-Z0-9_]+)*\\z/', $name);
            }
        }
        return $this->_validPackageName($name);
    }

    /**
     * This validates a bundle name, and bundle names must conform
     * to the PEAR naming convention, so the method is final and static.
     * @param string
     * @final
     * @static
     */
    function validGroupName($name)
    {
        return (bool) preg_match('/^' . _PEAR_COMMON_PACKAGE_NAME_PREG . '\\z/', $name);
    }

    /**
     * Determine whether $state represents a valid stability level
     * @param string
     * @return bool
     * @static
     * @final
     */
    function validState($state)
    {
        return in_array($state, array('snapshot', 'devel', 'alpha', 'beta', 'stable'));
    }

    /**
     * Get a list of valid stability levels
     * @return array
     * @static
     * @final
     */
    function getValidStates()
    {
        return array('snapshot', 'devel', 'alpha', 'beta', 'stable');
    }

    /**
     * Determine whether a version is a properly formatted version number that can be used
     * by version_compare
     * @param string
     * @return bool
     * @static
     * @final
     */
    function validVersion($ver)
    {
        return (bool) preg_match(PEAR_COMMON_PACKAGE_VERSION_PREG, $ver);
    }

    /**
     * @param PEAR_PackageFile_v1|PEAR_PackageFile_v2
     */
    function setPackageFile(&$pf)
    {
        $this->_packagexml = &$pf;
    }

    /**
     * @access private
     */
    function _addFailure($field, $reason)
    {
        $this->_failures['errors'][] = array('field' => $field, 'reason' => $reason);
    }

    /**
     * @access private
     */
    function _addWarning($field, $reason)
    {
        $this->_failures['warnings'][] = array('field' => $field, 'reason' => $reason);
    }

    function getFailures()
    {
        $failures = $this->_failures;
        $this->_failures = array('warnings' => array(), 'errors' => array());
        return $failures;
    }

    /**
     * @param int one of the PEAR_VALIDATE_* constants
     */
    function validate($state = null)
    {
        if (!isset($this->_packagexml)) {
            return false;
        }
        if ($state !== null) {
            $this->_state = $state;
        }
        $this->_failures = array('warnings' => array(), 'errors' => array());
        $this->validatePackageName();
        $this->validateVersion();
        $this->validateMaintainers();
        $this->validateDate();
        $this->validateSummary();
        $this->validateDescription();
        $this->validateLicense();
        $this->validateNotes();
        if ($this->_packagexml->getPackagexmlVersion() == '1.0') {
            $this->validateState();
            $this->validateFilelist();
        } elseif ($this->_packagexml->getPackagexmlVersion() == '2.0' ||
                  $this->_packagexml->getPackagexmlVersion() == '2.1') {
            $this->validateTime();
            $this->validateStability();
            $this->validateDeps();
            $this->validateMainFilelist();
            $this->validateReleaseFilelist();
            //$this->validateGlobalTasks();
            $this->validateChangelog();
        }
        return !((bool) count($this->_failures['errors']));
    }

    /**
     * @access protected
     */
    function validatePackageName()
    {
        if ($this->_state == PEAR_VALIDATE_PACKAGING ||
              $this->_state == PEAR_VALIDATE_NORMAL) {
            if (($this->_packagexml->getPackagexmlVersion() == '2.0' ||
                 $this->_packagexml->getPackagexmlVersion() == '2.1') &&
                  $this->_packagexml->getExtends()) {
                $version = $this->_packagexml->getVersion() . '';
                $name = $this->_packagexml->getPackage();
                $test = array_shift($a = explode('.', $version));
                if ($test == '0') {
                    return true;
                }
                $vlen = strlen($test);
                $majver = substr($name, strlen($name) - $vlen);
                while ($majver && !is_numeric($majver{0})) {
                    $majver = substr($majver, 1);
                }
                if ($majver != $test) {
                    $this->_addWarning('package', "package $name extends package " .
                        $this->_packagexml->getExtends() . ' and so the name should ' .
                        'have a postfix equal to the major version like "' .
                        $this->_packagexml->getExtends() . $test . '"');
                    return true;
                } elseif (substr($name, 0, strlen($name) - $vlen) !=
                            $this->_packagexml->getExtends()) {
                    $this->_addWarning('package', "package $name extends package " .
                        $this->_packagexml->getExtends() . ' and so the name must ' .
                        'be an extension like "' . $this->_packagexml->getExtends() .
                        $test . '"');
                    return true;
                }
            }
        }
        if (!$this->validPackageName($this->_packagexml->getPackage())) {
            $this->_addFailure('name', 'package name "' .
                $this->_packagexml->getPackage() . '" is invalid');
            return false;
        }
    }

    /**
     * @access protected
     */
    function validateVersion()
    {
        if ($this->_state != PEAR_VALIDATE_PACKAGING) {
            if (!$this->validVersion($this->_packagexml->getVersion())) {
                $this->_addFailure('version',
                    'Invalid version number "' . $this->_packagexml->getVersion() . '"');
            }
            return false;
        }
        $version = $this->_packagexml->getVersion();
        $versioncomponents = explode('.', $version);
        if (count($versioncomponents) != 3) {
            $this->_addWarning('version',
                'A version number should have 3 decimals (x.y.z)');
            return true;
        }
        $name = $this->_packagexml->getPackage();
        // version must be based upon state
        switch ($this->_packagexml->getState()) {
            case 'snapshot' :
                return true;
            case 'devel' :
                if ($versioncomponents[0] . 'a' == '0a') {
                    return true;
                }
                if ($versioncomponents[0] == 0) {
                    $versioncomponents[0] = '0';
                    $this->_addWarning('version',
                        'version "' . $version . '" should be "' .
                        implode('.' ,$versioncomponents) . '"');
                } else {
                    $this->_addWarning('version',
                        'packages with devel stability must be < version 1.0.0');
                }
                return true;
            break;
            case 'alpha' :
            case 'beta' :
                // check for a package that extends a package,
                // like Foo and Foo2
                if ($this->_state == PEAR_VALIDATE_PACKAGING) {
                    if (substr($versioncomponents[2], 1, 2) == 'rc') {
                        $this->_addFailure('version', 'Release Candidate versions ' .
                            'must have capital RC, not lower-case rc');
                        return false;
                    }
                }
                if (!$this->_packagexml->getExtends()) {
                    if ($versioncomponents[0] == '1') {
                        if ($versioncomponents[2]{0} == '0') {
                            if ($versioncomponents[2] == '0') {
                                // version 1.*.0000
                                $this->_addWarning('version',
                                    'version 1.' . $versioncomponents[1] .
                                        '.0 probably should not be alpha or beta');
                                return true;
                            } elseif (strlen($versioncomponents[2]) > 1) {
                                // version 1.*.0RC1 or 1.*.0beta24 etc.
                                return true;
                            } else {
                                // version 1.*.0
                                $this->_addWarning('version',
                                    'version 1.' . $versioncomponents[1] .
                                        '.0 probably should not be alpha or beta');
                                return true;
                            }
                        } else {
                            $this->_addWarning('version',
                                'bugfix versions (1.3.x where x > 0) probably should ' .
                                'not be alpha or beta');
                            return true;
                        }
                    } elseif ($versioncomponents[0] != '0') {
                        $this->_addWarning('version',
                            'major versions greater than 1 are not allowed for packages ' .
                            'without an <extends> tag or an identical postfix (foo2 v2.0.0)');
                        return true;
                    }
                    if ($versioncomponents[0] . 'a' == '0a') {
                        return true;
                    }
                    if ($versioncomponents[0] == 0) {
                        $versioncomponents[0] = '0';
                        $this->_addWarning('version',
                            'version "' . $version . '" should be "' .
                            implode('.' ,$versioncomponents) . '"');
                    }
                } else {
                    $vlen = strlen($versioncomponents[0] . '');
                    $majver = substr($name, strlen($name) - $vlen);
                    while ($majver && !is_numeric($majver{0})) {
                        $majver = substr($majver, 1);
                    }
                    if (($versioncomponents[0] != 0) && $majver != $versioncomponents[0]) {
                        $this->_addWarning('version', 'first version number "' .
                            $versioncomponents[0] . '" must match the postfix of ' .
                            'package name "' . $name . '" (' .
                            $majver . ')');
                        return true;
                    }
                    if ($versioncomponents[0] == $majver) {
                        if ($versioncomponents[2]{0} == '0') {
                            if ($versioncomponents[2] == '0') {
                                // version 2.*.0000
                                $this->_addWarning('version',
                                    "version $majver." . $versioncomponents[1] .
                                        '.0 probably should not be alpha or beta');
                                return false;
                            } elseif (strlen($versioncomponents[2]) > 1) {
                                // version 2.*.0RC1 or 2.*.0beta24 etc.
                                return true;
                            } else {
                                // version 2.*.0
                                $this->_addWarning('version',
                                    "version $majver." . $versioncomponents[1] .
                                        '.0 cannot be alpha or beta');
                                return true;
                            }
                        } else {
                            $this->_addWarning('version',
                                "bugfix versions ($majver.x.y where y > 0) should " .
                                'not be alpha or beta');
                            return true;
                        }
                    } elseif ($versioncomponents[0] != '0') {
                        $this->_addWarning('version',
                            "only versions 0.x.y and $majver.x.y are allowed for alpha/beta releases");
                        return true;
                    }
                    if ($versioncomponents[0] . 'a' == '0a') {
                        return true;
                    }
                    if ($versioncomponents[0] == 0) {
                        $versioncomponents[0] = '0';
                        $this->_addWarning('version',
                            'version "' . $version . '" should be "' .
                            implode('.' ,$versioncomponents) . '"');
                    }
                }
                return true;
            break;
            case 'stable' :
                if ($versioncomponents[0] == '0') {
                    $this->_addWarning('version', 'versions less than 1.0.0 cannot ' .
                    'be stable');
                    return true;
                }
                if (!is_numeric($versioncomponents[2])) {
                    if (preg_match('/\d+(rc|a|alpha|b|beta)\d*/i',
                          $versioncomponents[2])) {
                        $this->_addWarning('version', 'version "' . $version . '" or any ' .
                            'RC/beta/alpha version cannot be stable');
                        return true;
                    }
                }
                // check for a package that extends a package,
                // like Foo and Foo2
                if ($this->_packagexml->getExtends()) {
                    $vlen = strlen($versioncomponents[0] . '');
                    $majver = substr($name, strlen($name) - $vlen);
                    while ($majver && !is_numeric($majver{0})) {
                        $majver = substr($majver, 1);
                    }
                    if (($versioncomponents[0] != 0) && $majver != $versioncomponents[0]) {
                        $this->_addWarning('version', 'first version number "' .
                            $versioncomponents[0] . '" must match the postfix of ' .
                            'package name "' . $name . '" (' .
                            $majver . ')');
                        return true;
                    }
                } elseif ($versioncomponents[0] > 1) {
                    $this->_addWarning('version', 'major version x in x.y.z may not be greater than ' .
                        '1 for any package that does not have an <extends> tag');
                }
                return true;
            break;
            default :
                return false;
            break;
        }
    }

    /**
     * @access protected
     */
    function validateMaintainers()
    {
        // maintainers can only be truly validated server-side for most channels
        // but allow this customization for those who wish it
        return true;
    }

    /**
     * @access protected
     */
    function validateDate()
    {
        if ($this->_state == PEAR_VALIDATE_NORMAL ||
              $this->_state == PEAR_VALIDATE_PACKAGING) {

            if (!preg_match('/(\d\d\d\d)\-(\d\d)\-(\d\d)/',
                  $this->_packagexml->getDate(), $res) ||
                  count($res) < 4
                  || !checkdate($res[2], $res[3], $res[1])
                ) {
                $this->_addFailure('date', 'invalid release date "' .
                    $this->_packagexml->getDate() . '"');
                return false;
            }

            if ($this->_state == PEAR_VALIDATE_PACKAGING &&
                  $this->_packagexml->getDate() != date('Y-m-d')) {
                $this->_addWarning('date', 'Release Date "' .
                    $this->_packagexml->getDate() . '" is not today');
            }
        }
        return true;
    }

    /**
     * @access protected
     */
    function validateTime()
    {
        if (!$this->_packagexml->getTime()) {
            // default of no time value set
            return true;
        }

        // packager automatically sets time, so only validate if pear validate is called
        if ($this->_state = PEAR_VALIDATE_NORMAL) {
            if (!preg_match('/\d\d:\d\d:\d\d/',
                  $this->_packagexml->getTime())) {
                $this->_addFailure('time', 'invalid release time "' .
                    $this->_packagexml->getTime() . '"');
                return false;
            }

            $result = preg_match('|\d{2}\:\d{2}\:\d{2}|', $this->_packagexml->getTime(), $matches);
            if ($result === false || empty($matches)) {
                $this->_addFailure('time', 'invalid release time "' .
                    $this->_packagexml->getTime() . '"');
                return false;
            }
        }

        return true;
    }

    /**
     * @access protected
     */
    function validateState()
    {
        // this is the closest to "final" php4 can get
        if (!PEAR_Validate::validState($this->_packagexml->getState())) {
            if (strtolower($this->_packagexml->getState() == 'rc')) {
                $this->_addFailure('state', 'RC is not a state, it is a version ' .
                    'postfix, use ' . $this->_packagexml->getVersion() . 'RC1, state beta');
            }
            $this->_addFailure('state', 'invalid release state "' .
                $this->_packagexml->getState() . '", must be one of: ' .
                implode(', ', PEAR_Validate::getValidStates()));
            return false;
        }
        return true;
    }

    /**
     * @access protected
     */
    function validateStability()
    {
        $ret = true;
        $packagestability = $this->_packagexml->getState();
        $apistability = $this->_packagexml->getState('api');
        if (!PEAR_Validate::validState($packagestability)) {
            $this->_addFailure('state', 'invalid release stability "' .
                $this->_packagexml->getState() . '", must be one of: ' .
                implode(', ', PEAR_Validate::getValidStates()));
            $ret = false;
        }
        $apistates = PEAR_Validate::getValidStates();
        array_shift($apistates); // snapshot is not allowed
        if (!in_array($apistability, $apistates)) {
            $this->_addFailure('state', 'invalid API stability "' .
                $this->_packagexml->getState('api') . '", must be one of: ' .
                implode(', ', $apistates));
            $ret = false;
        }
        return $ret;
    }

    /**
     * @access protected
     */
    function validateSummary()
    {
        return true;
    }

    /**
     * @access protected
     */
    function validateDescription()
    {
        return true;
    }

    /**
     * @access protected
     */
    function validateLicense()
    {
        return true;
    }

    /**
     * @access protected
     */
    function validateNotes()
    {
        return true;
    }

    /**
     * for package.xml 2.0 only - channels can't use package.xml 1.0
     * @access protected
     */
    function validateDependencies()
    {
        return true;
    }

    /**
     * for package.xml 1.0 only
     * @access private
     */
    function _validateFilelist()
    {
        return true; // placeholder for now
    }

    /**
     * for package.xml 2.0 only
     * @access protected
     */
    function validateMainFilelist()
    {
        return true; // placeholder for now
    }

    /**
     * for package.xml 2.0 only
     * @access protected
     */
    function validateReleaseFilelist()
    {
        return true; // placeholder for now
    }

    /**
     * @access protected
     */
    function validateChangelog()
    {
        return true;
    }

    /**
     * @access protected
     */
    function validateFilelist()
    {
        return true;
    }

    /**
     * @access protected
     */
    function validateDeps()
    {
        return true;
    }
}