This file is indexed.

/usr/share/awl/inc/AWLUtilities.php is in libawl-php 0.56-1ubuntu1.

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
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
<?php
/**
* Utility functions of a general nature which are used by
* most AWL library classes.
*
* @package   awl
* @subpackage   Utilities
* @author    Andrew McMillan <andrew@mcmillan.net.nz>
* @copyright Catalyst IT Ltd, Morphoss Ltd <http://www.morphoss.com/>
* @license   http://www.gnu.org/licenses/lgpl-3.0.txt  GNU LGPL version 3 or later
*/

if ( !function_exists('dbg_error_log') ) {
  /**
  * Writes a debug message into the error log using printf syntax.  If the first
  * parameter is "ERROR" then the message will _always_ be logged.
  * Otherwise, the first parameter is a "component" name, and will only be logged
  * if $c->dbg["component"] is set to some non-null value.
  *
  * If you want to see every log message then $c->dbg["ALL"] can be set, to
  * override the debugging status of the individual components.
  *
  * @var string $component The component to identify itself, or "ERROR", or "LOG:component"
  * @var string $format A format string for the log message
  * @var [string $parameter ...] Parameters for the format string.
  */
  function dbg_error_log() {
    global $c;
    $args = func_get_args();
    $type = "DBG";
    $component = array_shift($args);
    if ( substr( $component, 0, 3) == "LOG" ) {
      // Special escape case for stuff that always gets logged.
      $type = 'LOG';
      $component = substr($component,4);
    }
    else if ( $component == "ERROR" ) {
      $type = "***";
    }
    else if ( isset($c->dbg["ALL"]) ) {
      $type = "ALL";
    }
    else if ( !isset($c->dbg[strtolower($component)]) ) return;

    $argc = func_num_args();
    if ( 2 <= $argc ) {
      $format = array_shift($args);
    }
    else {
      $format = "%s";
    }
    @error_log( $c->sysabbr.": $type: $component:". vsprintf( $format, $args ) );
  }
}


if ( !function_exists('fatal') ) {
  function fatal() {
    global $c;
    $args = func_get_args();
    $argc = func_num_args();
    if ( 2 <= $argc ) {
      $format = array_shift($args);
    }
    else {
      $format = "%s";
    }
    @error_log( $c->sysabbr.": FATAL: $component:". vsprintf( $format, $args ) );
    
    @error_log( "================= Stack Trace ===================" );
	
  	$trace = array_reverse(debug_backtrace());
    array_pop($trace);
    foreach( $trace AS $k => $v ) {
 	  @error_log( sprintf(" ===>  %s[%d] calls %s%s%s()",
	               $v['file'],
	               $v['line'],
	               (isset($v['class'])?$v['class']:''),
	               (isset($v['type'])?$v['type']:''),
	               (isset($v['function'])?$v['function']:'')
	      ));
    }
    echo "Fatal Error";
    exit();
  }
}


if ( !function_exists('trace_bug') ) {
/**
* Not as sever as a fatal() call, but we want to log and trace it
*/
  function trace_bug() {
    global $c;
    $args = func_get_args();
    $argc = func_num_args();
    if ( 2 <= $argc ) {
      $format = array_shift($args);
    }
    else {
      $format = "%s";
    }
    @error_log( $c->sysabbr.": BUG: $component:". vsprintf( $format, $args ) );
    
    @error_log( "================= Stack Trace ===================" );
	
  	$trace = array_reverse(debug_backtrace());
    array_pop($trace);
    foreach( $trace AS $k => $v ) {
 	  @error_log( sprintf(" ===>  %s[%d] calls %s%s%s()",
	               $v['file'],
	               $v['line'],
	               (isset($v['class'])?$v['class']:''),
	               (isset($v['type'])?$v['type']:''),
	               (isset($v['function'])?$v['function']:'')
	      ));
    }
  }
}


if ( !function_exists('apache_request_headers') ) {
  /**
  * Compatibility so we can use the apache function name and still work with CGI
  * @package awl
  */
  eval('
    function apache_request_headers() {
        foreach($_SERVER as $key=>$value) {
            if (substr($key,0,5)=="HTTP_") {
                $key=str_replace(" ","-",ucwords(strtolower(str_replace("_"," ",substr($key,5)))));
                $out[$key]=$value;
            }
        }
        return $out;
    }
  ');
}



if ( !function_exists('dbg_log_array') ) {
  /**
  * Function to dump an array to the error log, possibly recursively
  *
  * @var string $component Which component should this log message identify itself from
  * @var string $name What name should this array dump identify itself as
  * @var array $arr The array to be dumped.
  * @var boolean $recursive Should the dump recurse into arrays/objects in the array
  */
  function dbg_log_array( $component, $name, $arr, $recursive = false ) {
    if ( !isset($arr) || (gettype($arr) != 'array' && gettype($arr) != 'object') ) {
      dbg_error_log( $component, "%s: array is not set, or is not an array!", $name);
      return;
    }
    foreach ($arr as $key => $value) {
      dbg_error_log( $component, "%s: >>%s<< = >>%s<<", $name, $key,
                      (gettype($value) == 'array' || gettype($value) == 'object' ? gettype($value) : $value) );
      if ( $recursive && (gettype($value) == 'array' || (gettype($value) == 'object' && "$key" != 'self' && "$key" != 'parent') ) ) {
        dbg_log_array( $component, "$name"."[$key]", $value, $recursive );
      }
    }
  }
}



if ( !function_exists("session_simple_md5") ) {
  /**
  * Make a plain MD5 hash of a string, identifying the type of hash it is
  *
  * @param string $instr The string to be salted and MD5'd
  * @return string The *MD5* and the MD5 of the string
  */
  function session_simple_md5( $instr ) {
    global $c;
    if ( isset($c->dbg['password']) ) dbg_error_log( "Login", "Making plain MD5: instr=$instr, md5($instr)=".md5($instr) );
    return ( '*MD5*'. md5($instr) );
  }
}



if ( !function_exists("session_salted_md5") ) {
  /**
  * Make a salted MD5 string, given a string and (possibly) a salt.
  *
  * If no salt is supplied we will generate a random one.
  *
  * @param string $instr The string to be salted and MD5'd
  * @param string $salt Some salt to sprinkle into the string to be MD5'd so we don't get the same PW always hashing to the same value.
  * @return string The salt, a * and the MD5 of the salted string, as in SALT*SALTEDHASH
  */
  function session_salted_md5( $instr, $salt = "" ) {
    if ( $salt == "" ) $salt = substr( md5(rand(100000,999999)), 2, 8);
    global $c;
    if ( isset($c->dbg['password']) ) dbg_error_log( "Login", "Making salted MD5: salt=$salt, instr=$instr, md5($salt$instr)=".md5($salt . $instr) );
    return ( sprintf("*%s*%s", $salt, md5($salt . $instr) ) );
  }
}



if ( !function_exists("session_salted_sha1") ) {
  /**
  * Make a salted SHA1 string, given a string and (possibly) a salt.  PHP5 only (although it
  * could be made to work on PHP4 (@see http://www.openldap.org/faq/data/cache/347.html). The
  * algorithm used here is compatible with OpenLDAP so passwords generated through this function
  * should be able to be migrated to OpenLDAP by using the part following the second '*', i.e.
  * the '{SSHA}....' part.
  *
  * If no salt is supplied we will generate a random one.
  *
  * @param string $instr The string to be salted and SHA1'd
  * @param string $salt Some salt to sprinkle into the string to be SHA1'd so we don't get the same PW always hashing to the same value.
  * @return string A *, the salt, a * and the SHA1 of the salted string, as in *SALT*SALTEDHASH
  */
  function session_salted_sha1( $instr, $salt = "" ) {
    if ( $salt == "" ) $salt = substr( str_replace('*','',base64_encode(sha1(rand(100000,9999999),true))), 2, 9);
    global $c;
    if ( isset($c->dbg['password']) ) dbg_error_log( "Login", "Making salted SHA1: salt=$salt, instr=$instr, encoded($instr$salt)=".base64_encode(sha1($instr . $salt, true).$salt) );
    return ( sprintf("*%s*{SSHA}%s", $salt, base64_encode(sha1($instr.$salt, true) . $salt ) ) );
  }
}


if ( !function_exists("session_validate_password") ) {

  /**
  * Checks what a user entered against the actual password on their account.
  * @param string $they_sent What the user entered.
  * @param string $we_have What we have in the database as their password.  Which may (or may not) be a salted MD5.
  * @return boolean Whether or not the users attempt matches what is already on file.
  */
  function session_validate_password( $they_sent, $we_have ) {
    global $c;
    if ( preg_match('/^\*\*.+$/', $we_have ) ) {
      //  The "forced" style of "**plaintext" to allow easier admin setting
      return ( "**$they_sent" == $we_have );
    }

    if ( isset($c->wp_includes) && substring($we_have,0,1) == '$' ) {
      // Include Wordpress password handling, if it's in the path.
      @require_once($c->wp_includes .'/class-phpass.php');

      if ( class_exists('PasswordHash') ) {
        $wp_hasher = new PasswordHash(8, true);
        return $wp_hasher->CheckPassword($password, $hash);
      }
    }

    if ( preg_match('/^\*(.+)\*{[A-Z]+}.+$/', $we_have, $regs ) ) {
      if ( function_exists("session_salted_sha1") ) {
        // A nicely salted sha1sum like "*<salt>*{SSHA}<salted_sha1>"
        $salt = $regs[1];
        $sha1_sent = session_salted_sha1( $they_sent, $salt ) ;
        return ( $sha1_sent == $we_have );
      }
      else {
        dbg_error_log( "ERROR", "Password is salted SHA-1 but you are using PHP4!" );
        echo <<<EOERRMSG
<html>
<head>
<title>Salted SHA1 Password format not supported with PHP4</title>
</head>
<body>
<h1>Salted SHA1 Password format not supported with PHP4</h1>
<p>At some point you have used PHP5 to set the password for this user and now you are
   using PHP4.  You will need to assign a new password to this user using PHP4, or ensure
   you use PHP5 everywhere (recommended).</p>
<p>AWL has now switched to using salted SHA-1 passwords by preference in a format
   compatible with OpenLDAP.</p>
</body>
</html>
EOERRMSG;
        exit;
      }
    }

    if ( preg_match('/^\*MD5\*.+$/', $we_have, $regs ) ) {
      // A crappy unsalted md5sum like "*MD5*<md5>"
      $md5_sent = session_simple_md5( $they_sent ) ;
      return ( $md5_sent == $we_have );
    }
    else if ( preg_match('/^\*(.+)\*.+$/', $we_have, $regs ) ) {
      // A nicely salted md5sum like "*<salt>*<salted_md5>"
      $salt = $regs[1];
      $md5_sent = session_salted_md5( $they_sent, $salt ) ;
      return ( $md5_sent == $we_have );
    }

    // Anything else is bad
    return false;

  }
}



if ( !function_exists("replace_uri_params") ) {
  /**
  * Given a URL (presumably the current one) and a parameter, replace the value of parameter,
  * extending the URL as necessary if the parameter is not already there.
  * @param string $uri The URI we will be replacing parameters in.
  * @param array $replacements An array of replacement pairs array( "replace_this" => "with this" )
  * @return string The URI with the replacements done.
  */
  function replace_uri_params( $uri, $replacements ) {
    $replaced = $uri;
    foreach( $replacements AS $param => $new_value ) {
      $rxp = preg_replace( '/([\[\]])/', '\\\\$1', $param );  // Some parameters may be arrays.
      $regex = "/([&?])($rxp)=([^&]+)/";
      dbg_error_log("core", "Looking for [%s] to replace with [%s] regex is %s and searching [%s]", $param, $new_value, $regex, $replaced );
      if ( preg_match( $regex, $replaced ) )
        $replaced = preg_replace( $regex, "\$1$param=$new_value", $replaced);
      else
        $replaced .= "&$param=$new_value";
    }
    if ( ! preg_match( '/\?/', $replaced  ) ) {
      $replaced = preg_replace("/&(.+)$/", "?\$1", $replaced);
    }
    $replaced = str_replace("&amp;", "--AmPeRsAnD--", $replaced);
    $replaced = str_replace("&", "&amp;", $replaced);
    $replaced = str_replace("--AmPeRsAnD--", "&amp;", $replaced);
    dbg_error_log("core", "URI <<$uri>> morphed to <<$replaced>>");
    return $replaced;
  }
}


if ( !function_exists("uuid") ) {
/**
 * Generates a Universally Unique IDentifier, version 4.
 *
 * RFC 4122 (http://www.ietf.org/rfc/rfc4122.txt) defines a special type of Globally
 * Unique IDentifiers (GUID), as well as several methods for producing them. One
 * such method, described in section 4.4, is based on truly random or pseudo-random
 * number generators, and is therefore implementable in a language like PHP.
 *
 * We choose to produce pseudo-random numbers with the Mersenne Twister, and to always
 * limit single generated numbers to 16 bits (ie. the decimal value 65535). That is
 * because, even on 32-bit systems, PHP's RAND_MAX will often be the maximum *signed*
 * value, with only the equivalent of 31 significant bits. Producing two 16-bit random
 * numbers to make up a 32-bit one is less efficient, but guarantees that all 32 bits
 * are random.
 *
 * The algorithm for version 4 UUIDs (ie. those based on random number generators)
 * states that all 128 bits separated into the various fields (32 bits, 16 bits, 16 bits,
 * 8 bits and 8 bits, 48 bits) should be random, except : (a) the version number should
 * be the last 4 bits in the 3rd field, and (b) bits 6 and 7 of the 4th field should
 * be 01. We try to conform to that definition as efficiently as possible, generating
 * smaller values where possible, and minimizing the number of base conversions.
 *
 * @copyright  Copyright (c) CFD Labs, 2006. This function may be used freely for
 *              any purpose ; it is distributed without any form of warranty whatsoever.
 * @author      David Holmes <dholmes@cfdsoftware.net>
 *
 * @return  string  A UUID, made up of 32 hex digits and 4 hyphens.
 */

  function uuid() {

    // The field names refer to RFC 4122 section 4.1.2

    return sprintf('%04x%04x-%04x-%03x4-%04x-%04x%04x%04x',
        mt_rand(0, 65535), mt_rand(0, 65535), // 32 bits for "time_low"
        mt_rand(0, 65535), // 16 bits for "time_mid"
        mt_rand(0, 4095),  // 12 bits before the 0100 of (version) 4 for "time_hi_and_version"
        bindec(substr_replace(sprintf('%016b', mt_rand(0, 65535)), '01', 6, 2)),
            // 8 bits, the last two of which (positions 6 and 7) are 01, for "clk_seq_hi_res"
            // (hence, the 2nd hex digit after the 3rd hyphen can only be 1, 5, 9 or d)
            // 8 bits for "clk_seq_low"
        mt_rand(0, 65535), mt_rand(0, 65535), mt_rand(0, 65535) // 48 bits for "node"
    );
  }
}

if ( !function_exists("translate") ) {
  require("Translation.php");
}

 if ( !function_exists("clone") && version_compare(phpversion(), '5.0') < 0) {
  /**
  * PHP5 screws with the assignment operator changing so that $a = $b means that
  * $a becomes a reference to $b.  There is a clone() that we can use in PHP5, so
  * we have to emulate that for PHP4.  Bleargh.
  */
  eval( 'function clone($object) { return $object; }' );
}

if ( !function_exists("quoted_printable_encode") ) {
  /**
  * Process a string to fit the requirements of RFC2045 section 6.7.  Note that
  * this works, but replaces more characters than the minimum set. For readability
  * the spaces aren't encoded as =20 though.
  */
  function quoted_printable_encode($string) {
    return preg_replace('/[^\r\n]{73}[^=\r\n]{2}/', "$0=\r\n", str_replace("%","=",str_replace("%20"," ",rawurlencode($string))));
  }
}


if ( !function_exists("check_by_regex") ) {
  /**
  * Verify a value is OK by testing a regex against it.  If it is an array apply it to
  * each element in the array recursively.  If it is an object we don't mess
  * with it.
  */
  function check_by_regex( $val, $regex ) {
    if ( is_null($val) ) return null;
    switch( $regex ) {
      case 'int':     $regex = '#^\d+$#';     break;
    }
    if ( is_array($val) ) {
      foreach( $val AS $k => $v ) {
        $val[$k] = check_by_regex($v,$regex);
      }
    }
    else if ( ! is_object($val) ) {
      if ( preg_match( $regex, $val, $matches) ) {
        $val = $matches[0];
      }
      else {
        $val = '';
      }
    }
    return $val;
  }
}


if ( !function_exists("param_to_global") ) {
  /**
  * Convert a parameter to a global.  We first look in _POST and then in _GET,
  * and if they passed in a bunch of valid characters, we will make sure the
  * incoming is cleaned to only match that set.
  *
  * @param string $varname The name of the global variable to put the answer in
  * @param string $match_regex The part of the parameter matching this regex will be returned
  * @param string $alias1  An alias for the name that we should look for first.
  * @param    "    ...     More aliases, in the order which they should be examined.  $varname will be appended to the end.
  */
  function param_to_global( ) {
    $args = func_get_args();

    $varname = array_shift($args);
    $GLOBALS[$varname] = null;

    $match_regex = null;
    $argc = func_num_args();
    if ( $argc > 1 ) {
      $match_regex = array_shift($args);
    }

    $args[] = $varname;
    foreach( $args AS $k => $name ) {
      if ( isset($_POST[$name]) ) {
        $result = $_POST[$name];
        break;
      }
      else if ( isset($_GET[$name]) ) {
        $result = $_GET[$name];
        break;
      }
    }
    if ( !isset($result) ) return null;

    if ( isset($match_regex) ) {
      $result = check_by_regex( $result, $match_regex );
    }

    $GLOBALS[$varname] = $result;
    return $result;
  }
}


if ( !function_exists("get_fields") ) {
  /**
  * @var array $_AWL_field_cache is a cache of the field names for a table
  */
  $_AWL_field_cache = array();
  
  /**
  * Get the names of the fields for a particular table
  * @param string $tablename The name of the table.
  * @return array of string The public fields in the table.
  */
  function get_fields( $tablename ) {
    global $_AWL_field_cache;

    if ( !isset($_AWL_field_cache[$tablename]) ) {
      dbg_error_log( "core", ":get_fields: Loading fields for table '$tablename'" );
      $qry = new AwlQuery();
      $db = $qry->GetConnection();
      $qry->SetSQL($db->GetFields($tablename));
      $qry->Exec("core");
      $fields = array();
      while( $row = $qry->Fetch() ) {
        $fields[$row->fieldname] = $row->typename . ($row->precision >= 0 ? sprintf('(%d)',$row->precision) : '');
      }
      $_AWL_field_cache[$tablename] = $fields;
    }
    return $_AWL_field_cache[$tablename];
  }
}


if ( !function_exists("force_utf8") ) {
  function define_byte_mappings() {
    global $byte_map, $nibble_good_chars;

    # Needed for using Grant McLean's byte mappings code
    $ascii_char = '[\x00-\x7F]';
    $cont_byte  = '[\x80-\xBF]';

    $utf8_2     = '[\xC0-\xDF]' . $cont_byte;
    $utf8_3     = '[\xE0-\xEF]' . $cont_byte . '{2}';
    $utf8_4     = '[\xF0-\xF7]' . $cont_byte . '{3}';
    $utf8_5     = '[\xF8-\xFB]' . $cont_byte . '{4}';

    $nibble_good_chars = "/^($ascii_char+|$utf8_2|$utf8_3|$utf8_4|$utf8_5)(.*)$/s";

    # From http://unicode.org/Public/MAPPINGS/VENDORS/MICSFT/WINDOWS/CP1252.TXT
    $byte_map = array(
        "\x80" => "\xE2\x82\xAC",  # EURO SIGN
        "\x82" => "\xE2\x80\x9A",  # SINGLE LOW-9 QUOTATION MARK
        "\x83" => "\xC6\x92",      # LATIN SMALL LETTER F WITH HOOK
        "\x84" => "\xE2\x80\x9E",  # DOUBLE LOW-9 QUOTATION MARK
        "\x85" => "\xE2\x80\xA6",  # HORIZONTAL ELLIPSIS
        "\x86" => "\xE2\x80\xA0",  # DAGGER
        "\x87" => "\xE2\x80\xA1",  # DOUBLE DAGGER
        "\x88" => "\xCB\x86",      # MODIFIER LETTER CIRCUMFLEX ACCENT
        "\x89" => "\xE2\x80\xB0",  # PER MILLE SIGN
        "\x8A" => "\xC5\xA0",      # LATIN CAPITAL LETTER S WITH CARON
        "\x8B" => "\xE2\x80\xB9",  # SINGLE LEFT-POINTING ANGLE QUOTATION MARK
        "\x8C" => "\xC5\x92",      # LATIN CAPITAL LIGATURE OE
        "\x8E" => "\xC5\xBD",      # LATIN CAPITAL LETTER Z WITH CARON
        "\x91" => "\xE2\x80\x98",  # LEFT SINGLE QUOTATION MARK
        "\x92" => "\xE2\x80\x99",  # RIGHT SINGLE QUOTATION MARK
        "\x93" => "\xE2\x80\x9C",  # LEFT DOUBLE QUOTATION MARK
        "\x94" => "\xE2\x80\x9D",  # RIGHT DOUBLE QUOTATION MARK
        "\x95" => "\xE2\x80\xA2",  # BULLET
        "\x96" => "\xE2\x80\x93",  # EN DASH
        "\x97" => "\xE2\x80\x94",  # EM DASH
        "\x98" => "\xCB\x9C",      # SMALL TILDE
        "\x99" => "\xE2\x84\xA2",  # TRADE MARK SIGN
        "\x9A" => "\xC5\xA1",      # LATIN SMALL LETTER S WITH CARON
        "\x9B" => "\xE2\x80\xBA",  # SINGLE RIGHT-POINTING ANGLE QUOTATION MARK
        "\x9C" => "\xC5\x93",      # LATIN SMALL LIGATURE OE
        "\x9E" => "\xC5\xBE",      # LATIN SMALL LETTER Z WITH CARON
        "\x9F" => "\xC5\xB8",      # LATIN CAPITAL LETTER Y WITH DIAERESIS
    );

    for( $i=160; $i < 256; $i++ ) {
      $ch = chr($i);
      $byte_map[$ch] = iconv('ISO-8859-1', 'UTF-8', $ch);
    }
  }
  define_byte_mappings();

  function force_utf8( $input ) {
    global $byte_map, $nibble_good_chars;

    $output = '';
    $char   = '';
    $rest   = '';
    while( $input != '' ) {
      if ( preg_match( $nibble_good_chars, $input, $matches ) ) {
        $output .= $matches[1];
        $rest = $matches[2];
      }
      else {
        preg_match( '/^(.)(.*)$/s', $input, $matches );
        $char = $matches[1];
        $rest = $matches[2];
        if ( isset($byte_map[$char]) ) {
          $output .= $byte_map[$char];
        }
        else {
          # Must be valid UTF8 already
          $output .= $char;
        }
      }
      $input = $rest;
    }
    return $output;
  }

}


/**
* Try and extract something like "Pacific/Auckland" or "America/Indiana/Indianapolis" if possible.
*/
function olson_from_tzstring( $tzstring ) {
  global $c;
  
  if ( function_exists('timezone_identifiers_list') && in_array($tzstring,timezone_identifiers_list()) ) return $tzstring;
  if ( preg_match( '{((Antarctica|America|Africa|Atlantic|Asia|Australia|Indian|Europe|Pacific)/(([^/]+)/)?[^/]+)$}', $tzstring, $matches ) ) {
//    dbg_error_log( 'INFO', 'Found timezone "%s" from string "%s"', $matches[1], $tzstring );
    return $matches[1];
  }
  switch( $tzstring ) {
    case 'New Zealand Standard Time': case 'New Zealand Daylight Time':
         return 'Pacific/Auckland';
         break;
    case 'Central Standard Time':     case 'Central Daylight Time':     case 'US/Central':
         return 'America/Chicago';
         break;
    case 'Eastern Standard Time':     case 'Eastern Daylight Time':     case 'US/Eastern':
    case '(UTC-05:00) Eastern Time (US & Canada)':
         return 'America/New_York';
         break;
    case 'Pacific Standard Time':     case 'Pacific Daylight Time':     case 'US/Pacific':
         return 'America/Los_Angeles';
         break;
    case 'Mountain Standard Time':    case 'Mountain Daylight Time':    case 'US/Mountain':    case 'Mountain Time':
         return 'America/Denver';
         // The US 'Mountain Time' can in fact be America/(Denver|Boise|Phoenix|Shiprock) which
         // all vary to some extent due to differing DST rules.
         break;
    case '(GMT-07.00) Arizona':
         return 'America/Phoenix';
         break;
    default:
         if ( isset($c->timezone_translations) && is_array($c->timezone_translations) 
                      && !empty($c->timezone_translations[$tzstring]) )
           return $c->timezone_translations[$tzstring];      
  }
  return null;
}

if ( !function_exists("deprecated") ) {
  function deprecated( $method ) {
    global $c;
    if ( isset($c->dbg['ALL']) || isset($c->dbg['deprecated']) ) {
      $stack = debug_backtrace();
      array_shift($stack);
      if ( preg_match( '{/inc/iCalendar.php$}', $stack[0]['file'] ) && $stack[0]['line'] > __LINE__ ) return;
      @error_log( sprintf( $c->sysabbr.':DEPRECATED: Call to deprecated method "%s"', $method));
      foreach( $stack AS $k => $v ) {
        @error_log( sprintf( $c->sysabbr.':  ==>  called from line %4d of %s', $v['line'], $v['file']));
      }
    }
  }
}


if ( !function_exists("gzdecode") ) {
  function gzdecode( $instring ) {
    global $c;
    if ( !isset($c->use_pipe_gunzip) || $c->use_pipe_gunzip ) {
      $descriptorspec = array(
         0 => array("pipe", "r"),  // stdin is a pipe that the child will read from
         1 => array("pipe", "w"),  // stdout is a pipe that the child will write to
         2 => array("file", "/dev/null", "a") // stderr is discarded
      );
      $process = proc_open('gunzip',$descriptorspec, $pipes);
      if ( is_resource($process) ) {
        fwrite($pipes[0],$instring);
        fclose($pipes[0]);
        
        $outstring = stream_get_contents($pipes[1]);
        fclose($pipes[1]);
        
        proc_close($process);
        return $outstring;
      }
      return '';
    }
    else {
      $g=tempnam('./','gz');
      file_put_contents($g,$instring);
      ob_start();
      readgzfile($g);
      $d=ob_get_clean();
      unlink($g);
      return $d;
    }
  }
}

/**
 * Return the AWL version
 */
function awl_version() {
  global $c;
$c->awl_library_version = 0.56;
  return $c->awl_library_version;
}