Added code to stop PHP using 'deleted' as a value for the session cookies on expiring...
[squirrelmail.git] / functions / global.php
CommitLineData
61d9ec71 1<?php
2
3/**
0c701a88 4 * global.php
61d9ec71 5 *
62f7daa5 6 * This includes code to update < 4.1.0 globals to the newer format
242342d0 7 * It also has some session register functions that work across various
62f7daa5 8 * php versions.
61d9ec71 9 *
4b5049de 10 * @copyright &copy; 1999-2007 The SquirrelMail Project Team
4b4abf93 11 * @license http://opensource.org/licenses/gpl-license.php GNU Public License
31841a9e 12 * @version $Id$
d6c32258 13 * @package squirrelmail
61d9ec71 14 */
15
051f6245 16/**
2ca4c65a 17 */
7f62aaef 18define('SQ_INORDER',0);
19define('SQ_GET',1);
20define('SQ_POST',2);
21define('SQ_SESSION',3);
22define('SQ_COOKIE',4);
23define('SQ_SERVER',5);
24define('SQ_FORM',6);
a32985a5 25
202bcbcc 26
62f7daa5 27/**
28 * returns true if current php version is at mimimum a.b.c
29 *
97bdc607 30 * Called: check_php_version(4,1)
8b096f0a 31 * @param int a major version number
32 * @param int b minor version number
33 * @param int c release number
34 * @return bool
97bdc607 35 */
62f7daa5 36function check_php_version ($a = '0', $b = '0', $c = '0')
9697c5ab 37{
5673cabe 38 return version_compare ( PHP_VERSION, "$a.$b.$c", 'ge' );
9697c5ab 39}
40
97bdc607 41/**
62f7daa5 42 * returns true if the current internal SM version is at minimum a.b.c
43 * These are plain integer comparisons, as our internal version is
97bdc607 44 * constructed by us, as an array of 3 ints.
45 *
46 * Called: check_sm_version(1,3,3)
8b096f0a 47 * @param int a major version number
48 * @param int b minor version number
49 * @param int c release number
50 * @return bool
97bdc607 51 */
52function check_sm_version($a = 0, $b = 0, $c = 0)
53{
54 global $SQM_INTERNAL_VERSION;
55 if ( !isset($SQM_INTERNAL_VERSION) ||
56 $SQM_INTERNAL_VERSION[0] < $a ||
150c28d6 57 ( $SQM_INTERNAL_VERSION[0] == $a &&
58 $SQM_INTERNAL_VERSION[1] < $b) ||
59 ( $SQM_INTERNAL_VERSION[0] == $a &&
60 $SQM_INTERNAL_VERSION[1] == $b &&
97bdc607 61 $SQM_INTERNAL_VERSION[2] < $c ) ) {
62 return FALSE;
62f7daa5 63 }
64 return TRUE;
97bdc607 65}
66
67
8b096f0a 68/**
69 * Recursively strip slashes from the values of an array.
70 * @param array array the array to strip, passed by reference
71 * @return void
72 */
a32985a5 73function sqstripslashes(&$array) {
3aa17cf9 74 if(count($array) > 0) {
75 foreach ($array as $index=>$value) {
76 if (is_array($array[$index])) {
77 sqstripslashes($array[$index]);
78 }
79 else {
80 $array[$index] = stripslashes($value);
81 }
a32985a5 82 }
83 }
84}
85
8b096f0a 86/**
8442ecb9 87 * Squelch error output to screen (only) for the given function.
1888b1bf 88 * If the SquirrelMail debug mode SM_DEBUG_MODE_ADVANCED is not
89 * enabled, error output will not go to the log, either.
8442ecb9 90 *
91 * This provides an alternative to the @ error-suppression
92 * operator where errors will not be shown in the interface
93 * but will show up in the server log file (assuming the
94 * administrator has configured PHP logging).
95 *
96 * @since 1.4.12 and 1.5.2
97 *
98 * @param string $function The function to be executed
99 * @param array $args The arguments to be passed to the function
100 * (OPTIONAL; default no arguments)
101 * NOTE: The caller must take extra action if
102 * the function being called is supposed
103 * to use any of the parameters by
104 * reference. In the following example,
105 * $x is passed by reference and $y is
106 * passed by value to the "my_func"
107 * function.
108 * sq_call_function_suppress_errors('my_func', array(&$x, $y));
109 *
110 * @return mixed The return value, if any, of the function being
111 * executed will be returned.
112 *
113 */
114function sq_call_function_suppress_errors($function, $args=NULL) {
1888b1bf 115 global $sm_debug_mode;
116
8442ecb9 117 $display_errors = ini_get('display_errors');
118 ini_set('display_errors', '0');
1888b1bf 119
120 // if advanced debug mode isn't enabled, don't log the error, either
121 //
122 if (!($sm_debug_mode & SM_DEBUG_MODE_ADVANCED))
123 $error_reporting = error_reporting(0);
124
8442ecb9 125 $ret = call_user_func_array($function, $args);
1888b1bf 126
127 if (!($sm_debug_mode & SM_DEBUG_MODE_ADVANCED))
128 error_reporting($error_reporting);
129
8442ecb9 130 ini_set('display_errors', $display_errors);
131 return $ret;
132}
133
134/**
8b096f0a 135 * Add a variable to the session.
136 * @param mixed $var the variable to register
137 * @param string $name the name to refer to this variable
138 * @return void
139 */
61d9ec71 140function sqsession_register ($var, $name) {
281c3d5b 141
142 sqsession_is_active();
143
04ce2477 144 $_SESSION[$name] = $var;
61d9ec71 145}
3aa17cf9 146
8b096f0a 147/**
148 * Delete a variable from the session.
149 * @param string $name the name of the var to delete
150 * @return void
151 */
61d9ec71 152function sqsession_unregister ($name) {
281c3d5b 153
154 sqsession_is_active();
155
abd74f7d 156 unset($_SESSION[$name]);
62f7daa5 157
dcc1cc82 158 session_unregister("$name");
61d9ec71 159}
3aa17cf9 160
8b096f0a 161/**
162 * Checks to see if a variable has already been registered
163 * in the session.
164 * @param string $name the name of the var to check
165 * @return bool whether the var has been registered
166 */
d7c82551 167function sqsession_is_registered ($name) {
168 $test_name = &$name;
169 $result = false;
62f7daa5 170
abd74f7d 171 if (isset($_SESSION[$test_name])) {
172 $result = true;
d7c82551 173 }
62f7daa5 174
d7c82551 175 return $result;
176}
177
54ce41dd 178
179/**
180 * Retrieves a form variable, from a set of possible similarly named
181 * form variables, based on finding a different, single field. This
68a7e1d6 182 * is intended to allow more than one same-named inputs in a single
183 * <form>, where the submit button that is clicked tells us which
54ce41dd 184 * input we should retrieve. An example is if we have:
185 * <select name="startMessage_1">
186 * <select name="startMessage_2">
b116fd78 187 * <input type="submit" name="form_submit_1" />
188 * <input type="submit" name="form_submit_2" />
68a7e1d6 189 * and we want to know which one of the select inputs should be
54ce41dd 190 * returned as $startMessage (without the suffix!), this function
191 * decides by looking for either "form_submit_1" or "form_submit_2"
192 * (both should not appear). In this example, $name should be
193 * "startMessage" and $indicator_field should be "form_submit".
194 *
195 * NOTE that form widgets must be named with the suffix "_1", "_2", "_3"
196 * and so on, or this function will not work.
197 *
198 * If more than one of the indicator fields is found, the first one
199 * (numerically) will win.
200 *
68a7e1d6 201 * If an indicator field is found without a matching input ($name)
139a4b99 202 * field, FALSE is returned.
203 *
68a7e1d6 204 * If no indicator fields are found, a field of $name *without* any
205 * suffix is searched for (but only if $fallback_no_suffix is TRUE),
139a4b99 206 * and if not found, FALSE is ultimately returned.
54ce41dd 207 *
208 * It should also be possible to use the same string for both
209 * $name and $indicator_field to look for the first possible
210 * widget with a suffix that can be found (and possibly fallback
211 * to a widget without a suffix).
212 *
213 * @param string name the name of the var to search
214 * @param mixed value the variable to return
215 * @param string indicator_field the name of the field upon which to base
216 * our decision upon (see above)
217 * @param int search constant defining where to look
218 * @param bool fallback_no_suffix whether or not to look for $name with
219 * no suffix when nothing else is found
220 * @param mixed default the value to assign to $value when nothing is found
221 * @param int typecast force variable to be cast to given type (please
222 * use SQ_TYPE_XXX constants or set to FALSE (default)
223 * to leave variable type unmolested)
224 *
225 * @return bool whether variable is found.
226 */
68a7e1d6 227function sqGetGlobalVarMultiple($name, &$value, $indicator_field,
228 $search = SQ_INORDER,
229 $fallback_no_suffix=TRUE, $default=NULL,
54ce41dd 230 $typecast=FALSE) {
231
1793f985 232 // Set arbitrary max limit -- should be much lower except on the
233 // search results page, if there are many (50 or more?) mailboxes
234 // shown, this may not be high enough. Is there some way we should
235 // automate this value?
236 //
237 $max_form_search = 100;
54ce41dd 238
239 for ($i = 1; $i <= $max_form_search; $i++) {
240 if (sqGetGlobalVar($indicator_field . '_' . $i, $temp, $search)) {
241 return sqGetGlobalVar($name . '_' . $i, $value, $search, $default, $typecast);
242 }
243 }
244
245
246 // no indicator field found; just try without suffix if allowed
247 //
248 if ($fallback_no_suffix) {
249 return sqGetGlobalVar($name, $value, $search, $default, $typecast);
250 }
251
252
253 // no dice, set default and return FALSE
254 //
255 if (!is_null($default)) {
256 $value = $default;
257 }
258 return FALSE;
259
260}
261
262
4cd8ae7d 263/**
2d055f0a 264 * Search for the var $name in $_SESSION, $_POST, $_GET, $_COOKIE, or $_SERVER
265 * and set it in provided var.
d1975c5b 266 *
2d055f0a 267 * If $search is not provided, or if it is SQ_INORDER, it will search $_SESSION,
268 * then $_POST, then $_GET. If $search is SQ_FORM it will search $_POST and
269 * $_GET. Otherwise, use one of the defined constants to look for a var in one
270 * place specifically.
d1975c5b 271 *
2d055f0a 272 * Note: $search is an int value equal to one of the constants defined above.
d1975c5b 273 *
2d055f0a 274 * Example:
275 * sqgetGlobalVar('username',$username,SQ_SESSION);
276 * // No quotes around last param, it's a constant - not a string!
d1975c5b 277 *
8b096f0a 278 * @param string name the name of the var to search
279 * @param mixed value the variable to return
280 * @param int search constant defining where to look
54ce41dd 281 * @param mixed default the value to assign to $value when nothing is found
c2b585c5 282 * @param int typecast force variable to be cast to given type (please
283 * use SQ_TYPE_XXX constants or set to FALSE (default)
284 * to leave variable type unmolested)
54ce41dd 285 *
8b096f0a 286 * @return bool whether variable is found.
4cd8ae7d 287 */
202bcbcc 288function sqgetGlobalVar($name, &$value, $search = SQ_INORDER, $default = NULL, $typecast = false) {
289
290 $result = false;
f79c19a4 291
4cd8ae7d 292 switch ($search) {
62f7daa5 293 /* we want the default case to be first here,
051f6245 294 so that if a valid value isn't specified,
295 all three arrays will be searched. */
d1975c5b 296 default:
d9ad2525 297 case SQ_INORDER: // check session, post, get
d1975c5b 298 case SQ_SESSION:
299 if( isset($_SESSION[$name]) ) {
4cd8ae7d 300 $value = $_SESSION[$name];
202bcbcc 301 $result = TRUE;
302 break;
d1975c5b 303 } elseif ( $search == SQ_SESSION ) {
304 break;
305 }
d9ad2525 306 case SQ_FORM: // check post, get
d1975c5b 307 case SQ_POST:
308 if( isset($_POST[$name]) ) {
4cd8ae7d 309 $value = $_POST[$name];
202bcbcc 310 $result = TRUE;
311 break;
d1975c5b 312 } elseif ( $search == SQ_POST ) {
27d0841c 313 break;
d1975c5b 314 }
315 case SQ_GET:
316 if ( isset($_GET[$name]) ) {
317 $value = $_GET[$name];
202bcbcc 318 $result = TRUE;
319 break;
62f7daa5 320 }
d1975c5b 321 /* NO IF HERE. FOR SQ_INORDER CASE, EXIT after GET */
322 break;
323 case SQ_COOKIE:
324 if ( isset($_COOKIE[$name]) ) {
325 $value = $_COOKIE[$name];
202bcbcc 326 $result = TRUE;
327 break;
d1975c5b 328 }
329 break;
330 case SQ_SERVER:
d1975c5b 331 if ( isset($_SERVER[$name]) ) {
332 $value = $_SERVER[$name];
202bcbcc 333 $result = TRUE;
334 break;
d1975c5b 335 }
336 break;
4cd8ae7d 337 }
202bcbcc 338 if ($result && $typecast) {
339 switch ($typecast) {
c2b585c5 340 case SQ_TYPE_INT: $value = (int) $value; break;
341 case SQ_TYPE_STRING: $value = (string) $value; break;
342 case SQ_TYPE_BOOL: $value = (bool) $value; break;
202bcbcc 343 default: break;
344 }
ced8272a 345 } else if (!$result && !is_null($default)) {
202bcbcc 346 $value = $default;
347 }
348 return $result;
4cd8ae7d 349}
350
8b096f0a 351/**
352 * Deletes an existing session, more advanced than the standard PHP
353 * session_destroy(), it explicitly deletes the cookies and global vars.
66c7cd3f 354 *
355 * WARNING: Older PHP versions have some issues with session management.
68a7e1d6 356 * See http://bugs.php.net/11643 (warning, spammed bug tracker) and
66c7cd3f 357 * http://bugs.php.net/13834. SID constant is not destroyed in PHP 4.1.2,
68a7e1d6 358 * 4.2.3 and maybe other versions. If you restart session after session
359 * is destroyed, affected PHP versions produce PHP notice. Bug should
66c7cd3f 360 * be fixed only in 4.3.0
8b096f0a 361 */
513db22c 362function sqsession_destroy() {
242342d0 363
281c3d5b 364 /*
365 * php.net says we can kill the cookie by setting just the name:
366 * http://www.php.net/manual/en/function.setcookie.php
367 * maybe this will help fix the session merging again.
368 *
369 * Changed the theory on this to kill the cookies first starting
370 * a new session will provide a new session for all instances of
371 * the browser, we don't want that, as that is what is causing the
372 * merging of sessions.
373 */
242342d0 374
716cc530 375 global $base_uri, $_COOKIE, $_SESSION;
f31687f6 376
f6cd95a1 377 if (isset($_COOKIE[session_name()]) && session_name()) sqsetcookie(session_name(), $_COOKIE[session_name()], 1, $base_uri);
378 if (isset($_COOKIE['key']) && $_COOKIE['key']) sqsetcookie('key','SQMTRASH',1,$base_uri);
281c3d5b 379
380 $sessid = session_id();
381 if (!empty( $sessid )) {
abd74f7d 382 $_SESSION = array();
21e18f59 383 @session_destroy();
242342d0 384 }
281c3d5b 385}
242342d0 386
8b096f0a 387/**
281c3d5b 388 * Function to verify a session has been started. If it hasn't
389 * start a session up. php.net doesn't tell you that $_SESSION
390 * (even though autoglobal), is not created unless a session is
391 * started, unlike $_POST, $_GET and such
253ca97e 392 * Update: (see #1685031) the session ID is left over after the
393 * session is closed in some PHP setups; this function just becomes
394 * a passthru to sqsession_start(), but leaving old code in for
395 * edification.
281c3d5b 396 */
281c3d5b 397function sqsession_is_active() {
253ca97e 398 //$sessid = session_id();
399 //if ( empty( $sessid ) ) {
3a1de9f1 400 sqsession_start();
253ca97e 401 //}
513db22c 402}
403
3a1de9f1 404/**
405 * Function to start the session and store the cookie with the session_id as
406 * HttpOnly cookie which means that the cookie isn't accessible by javascript
407 * (IE6 only)
253ca97e 408 * Note that as sqsession_is_active() no longer discriminates as to when
409 * it calls this function, session_start() has to have E_NOTICE suppression
410 * (thus the @ sign).
3a1de9f1 411 */
412function sqsession_start() {
202bcbcc 413 global $base_uri;
7f62aaef 414
8442ecb9 415 sq_call_function_suppress_errors('session_start');
416 // was: @session_start();
202bcbcc 417 $session_id = session_id();
418
3a1de9f1 419 // session_starts sets the sessionid cookie buth without the httponly var
420 // setting the cookie again sets the httponly cookie attribute
9e56668f 421 sqsetcookie(session_name(),$session_id,false,$base_uri);
3a1de9f1 422}
423
424
425/**
426 * Set a cookie
427 * @param string $sName The name of the cookie.
428 * @param string $sValue The value of the cookie.
429 * @param int $iExpire The time the cookie expires. This is a Unix timestamp so is in number of seconds since the epoch.
430 * @param string $sPath The path on the server in which the cookie will be available on.
431 * @param string $sDomain The domain that the cookie is available.
432 * @param boolean $bSecure Indicates that the cookie should only be transmitted over a secure HTTPS connection.
433 * @param boolean $bHttpOnly Disallow JS to access the cookie (IE6 only)
434 * @return void
435 */
716cc530 436function sqsetcookie($sName,$sValue='deleted',$iExpire=0,$sPath="",$sDomain="",$bSecure=false,$bHttpOnly=true) {
68a7e1d6 437 // if we have a secure connection then limit the cookies to https only.
438 if ($sName && isset($_SERVER['HTTPS']) && $_SERVER['HTTPS']) {
439 $bSecure = true;
202bcbcc 440 }
9c0f1780 441
442 // admin config can override the restriction of secure-only cookies
443 global $only_secure_cookies;
444 if (!$only_secure_cookies)
445 $bSecure = false;
446
68a7e1d6 447 if (false && check_php_version(5,2)) {
448 // php 5 supports the httponly attribute in setcookie, but because setcookie seems a bit
449 // broken we use the header function for php 5.2 as well. We might change that later.
450 //setcookie($sName,$sValue,(int) $iExpire,$sPath,$sDomain,$bSecure,$bHttpOnly);
451 } else {
a14da8d6 452 if (!empty($sDomain)) {
68a7e1d6 453 // Fix the domain to accept domains with and without 'www.'.
a14da8d6 454 if (strtolower(substr($sDomain, 0, 4)) == 'www.') $sDomain = substr($sDomain, 4);
455 $sDomain = '.' . $sDomain;
68a7e1d6 456
457 // Remove port information.
a14da8d6 458 $Port = strpos($sDomain, ':');
459 if ($Port !== false) $sDomain = substr($sDomain, 0, $Port);
68a7e1d6 460 }
716cc530 461 if (!$sValue) $sValue = 'deleted';
68a7e1d6 462 header('Set-Cookie: ' . rawurlencode($sName) . '=' . rawurlencode($sValue)
a14da8d6 463 . (empty($iExpire) ? '' : '; expires=' . gmdate('D, d-M-Y H:i:s', $iExpire) . ' GMT')
68a7e1d6 464 . (empty($sPath) ? '' : '; path=' . $sPath)
465 . (empty($sDomain) ? '' : '; domain=' . $sDomain)
466 . (!$bSecure ? '' : '; secure')
467 . (!$bHttpOnly ? '' : '; HttpOnly'), false);
468 }
202bcbcc 469}
470
471/**
472 * session_regenerate_id replacement for PHP < 4.3.2
473 *
474 * This code is borrowed from Gallery, session.php version 1.53.2.1
475 */
476if (!function_exists('session_regenerate_id')) {
477 function make_seed() {
478 list($usec, $sec) = explode(' ', microtime());
479 return (float)$sec + ((float)$usec * 100000);
480 }
481
482 function php_combined_lcg() {
483 mt_srand(make_seed());
484 $tv = gettimeofday();
485 $lcg['s1'] = $tv['sec'] ^ (~$tv['usec']);
486 $lcg['s2'] = mt_rand();
487 $q = (int) ($lcg['s1'] / 53668);
488 $lcg['s1'] = (int) (40014 * ($lcg['s1'] - 53668 * $q) - 12211 * $q);
489 if ($lcg['s1'] < 0) {
490 $lcg['s1'] += 2147483563;
491 }
492 $q = (int) ($lcg['s2'] / 52774);
493 $lcg['s2'] = (int) (40692 * ($lcg['s2'] - 52774 * $q) - 3791 * $q);
494 if ($lcg['s2'] < 0) {
495 $lcg['s2'] += 2147483399;
496 }
497 $z = (int) ($lcg['s1'] - $lcg['s2']);
498 if ($z < 1) {
499 $z += 2147483562;
500 }
501 return $z * 4.656613e-10;
502 }
3a1de9f1 503
202bcbcc 504 function session_regenerate_id() {
505 global $base_uri;
506 $tv = gettimeofday();
507 sqgetGlobalVar('REMOTE_ADDR',$remote_addr,SQ_SERVER);
508 $buf = sprintf("%.15s%ld%ld%0.8f", $remote_addr, $tv['sec'], $tv['usec'], php_combined_lcg() * 10);
509 session_id(md5($buf));
510 if (ini_get('session.use_cookies')) {
511 // at a later stage we use sqsetcookie. At this point just do
512 // what session_regenerate_id would do
513 setcookie(session_name(), session_id(), NULL, $base_uri);
514 }
515 return TRUE;
516 }
3a1de9f1 517}
7f62aaef 518
202bcbcc 519
7f62aaef 520/**
521 * php_self
522 *
523 * Creates an URL for the page calling this function, using either the PHP global
524 * REQUEST_URI, or the PHP global PHP_SELF with QUERY_STRING added. Before 1.5.1
525 * function was stored in function/strings.php.
526 *
527 * @return string the complete url for this page
528 * @since 1.2.3
529 */
530function php_self () {
531 if ( sqgetGlobalVar('REQUEST_URI', $req_uri, SQ_SERVER) && !empty($req_uri) ) {
532 return $req_uri;
533 }
534
535 if ( sqgetGlobalVar('PHP_SELF', $php_self, SQ_SERVER) && !empty($php_self) ) {
536
537 // need to add query string to end of PHP_SELF to match REQUEST_URI
538 //
539 if ( sqgetGlobalVar('QUERY_STRING', $query_string, SQ_SERVER) && !empty($query_string) ) {
540 $php_self .= '?' . $query_string;
541 }
542
543 return $php_self;
544 }
545
546 return '';
547}
aa201211 548
549
550/**
68a7e1d6 551 * Find files and/or directories in a given directory optionally
552 * limited to only those with the given file extension. If the
553 * directory is not found or cannot be opened, no error is generated;
8f32a0a3 554 * only an empty file list is returned.
aa201211 555FIXME: do we WANT to throw an error or a notice or... or return FALSE?
556 *
68a7e1d6 557 * @param string $directory_path The path (relative or absolute)
8f32a0a3 558 * to the desired directory.
45ca6962 559 * @param mixed $extension The file extension filter - either
560 * an array of desired extension(s),
561 * or a comma-separated list of same
562 * (optional; default is to return
563 * all files (dirs).
8f32a0a3 564 * @param boolean $return_filenames_only When TRUE, only file/dir names
aa201211 565 * are returned, otherwise the
566 * $directory_path string is
8f32a0a3 567 * prepended to each file/dir in
aa201211 568 * the returned list (optional;
8f32a0a3 569 * default is filename/dirname only)
570 * @param boolean $include_directories When TRUE, directories are
68a7e1d6 571 * included (optional; default
8f32a0a3 572 * DO include directories).
68a7e1d6 573 * @param boolean $directories_only When TRUE, ONLY directories
574 * are included (optional; default
8f32a0a3 575 * is to include files too).
576 * @param boolean $separate_files_and_directories When TRUE, files and
577 * directories are returned
578 * in separate lists, so
579 * the return value is
580 * formatted as a two-element
581 * array with the two keys
582 * "FILES" and "DIRECTORIES",
583 * where corresponding values
584 * are lists of either all
585 * files or all directories
586 * (optional; default do not
587 * split up return array).
45ca6962 588 * @param boolean $only_sm When TRUE, a security check will
589 * limit directory access to only
590 * paths within the SquirrelMail
591 * installation currently being used
592 * (optional; default TRUE)
aa201211 593 *
8f32a0a3 594 * @return array The requested file/directory list(s).
aa201211 595 *
596 * @since 1.5.2
597 *
598 */
45ca6962 599function list_files($directory_path, $extensions='', $return_filenames_only=TRUE,
68a7e1d6 600 $include_directories=TRUE, $directories_only=FALSE,
45ca6962 601 $separate_files_and_directories=FALSE, $only_sm=TRUE) {
aa201211 602
603 $files = array();
8f32a0a3 604 $directories = array();
aa201211 605
45ca6962 606
607 // make sure requested path is under SM_PATH if needed
608 //
609 if ($only_sm) {
610 if (strpos(realpath($directory_path), realpath(SM_PATH)) !== 0) {
611 //plain_error_message(_("Illegal filesystem access was requested"));
612 echo _("Illegal filesystem access was requested");
613 exit;
614 }
615 }
616
617
aa201211 618 // validate given directory
68a7e1d6 619 //
620 if (empty($directory_path)
621 || !is_dir($directory_path)
aa201211 622 || !($DIR = opendir($directory_path))) {
623 return $files;
624 }
625
8f32a0a3 626
45ca6962 627 // ensure extensions is an array and is properly formatted
628 //
629 if (!empty($extensions)) {
630 if (!is_array($extensions))
631 $extensions = explode(',', $extensions);
632 $temp_extensions = array();
633 foreach ($extensions as $ext)
634 $temp_extensions[] = '.' . trim(trim($ext), '.');
635 $extensions = $temp_extensions;
636 } else $extensions = array();
637
638
8f32a0a3 639 $directory_path = rtrim($directory_path, '/');
640
641
aa201211 642 // parse through the files
643 //
aa201211 644 while (($file = readdir($DIR)) !== false) {
645
646 if ($file == '.' || $file == '..') continue;
647
45ca6962 648 if (!empty($extensions))
649 foreach ($extensions as $ext)
650 if (strrpos($file, $ext) !== (strlen($file) - strlen($ext)))
651 continue 2;
8f32a0a3 652
653 // only use is_dir() if we really need to (be as efficient as possible)
654 //
655 $is_dir = FALSE;
68a7e1d6 656 if (!$include_directories || $directories_only
8f32a0a3 657 || $separate_files_and_directories) {
658 if (is_dir($directory_path . '/' . $file)) {
659 if (!$include_directories) continue;
660 $is_dir = TRUE;
68a7e1d6 661 $directories[] = ($return_filenames_only
8f32a0a3 662 ? $file
663 : $directory_path . '/' . $file);
68a7e1d6 664 }
8f32a0a3 665 if ($directories_only) continue;
666 }
667
68a7e1d6 668 if (!$separate_files_and_directories
8f32a0a3 669 || ($separate_files_and_directories && !$is_dir)) {
68a7e1d6 670 $files[] = ($return_filenames_only
8f32a0a3 671 ? $file
672 : $directory_path . '/' . $file);
aa201211 673 }
674
675 }
676 closedir($DIR);
677
8f32a0a3 678
679 if ($directories_only) return $directories;
680 if ($separate_files_and_directories) return array('FILES' => $files,
681 'DIRECTORIES' => $directories);
aa201211 682 return $files;
683
684}
685
686
687/**
688 * Print variable
689 *
690 * sm_print_r($some_variable, [$some_other_variable [, ...]]);
691 *
692 * Debugging function - does the same as print_r, but makes sure special
693 * characters are converted to htmlentities first. This will allow
694 * values like <some@email.address> to be displayed.
695 * The output is wrapped in <<pre>> and <</pre>> tags.
696 * Since 1.4.2 accepts unlimited number of arguments.
697 * @since 1.4.1
698 * @return void
699 */
700function sm_print_r() {
701 ob_start(); // Buffer output
702 foreach(func_get_args() as $var) {
703 print_r($var);
704 echo "\n";
705 // php has get_class_methods function that can print class methods
706 if (is_object($var)) {
707 // get class methods if $var is object
708 $aMethods=get_class_methods(get_class($var));
709 // make sure that $aMethods is array and array is not empty
710 if (is_array($aMethods) && $aMethods!=array()) {
711 echo "Object methods:\n";
712 foreach($aMethods as $method) {
713 echo '* ' . $method . "\n";
714 }
715 }
716 echo "\n";
717 }
718 }
719 $buffer = ob_get_contents(); // Grab the print_r output
720 ob_end_clean(); // Silently discard the output & stop buffering
721 print '<div align="left"><pre>';
722 print htmlentities($buffer);
723 print '</pre></div>';
724}
45ca6962 725
726
253ca97e 727/**
728 * Sanitize a value using htmlspecialchars() or similar, but also
729 * recursively run htmlspecialchars() (or similar) on array keys
730 * and values.
731 *
732 * If $value is not a string or an array with strings in it,
733 * the value is returned as is.
734 *
735 * @param mixed $value The value to be sanitized.
736 * @param mixed $quote_style Either boolean or an integer. If it
737 * is an integer, it must be the PHP
738 * constant indicating if/how to escape
739 * quotes: ENT_QUOTES, ENT_COMPAT, or
740 * ENT_NOQUOTES. If it is a boolean value,
741 * it must be TRUE and thus indicates
742 * that the only sanitizing to be done
743 * herein is to replace single and double
744 * quotes with &#039; and &quot;, no other
745 * changes are made to $value. If it is
746 * boolean and FALSE, behavior reverts
747 * to same as if the value was ENT_QUOTES
748 * (OPTIONAL; default is ENT_QUOTES).
749 *
750 * @return mixed The sanitized value.
751 *
752 * @since 1.5.2
753 *
754 **/
755function sq_htmlspecialchars($value, $quote_style=ENT_QUOTES) {
756
757 if ($quote_style === FALSE) $quote_style = ENT_QUOTES;
758
759 // array? go recursive...
760 //
761 if (is_array($value)) {
762 $return_array = array();
763 foreach ($value as $key => $val) {
764 $return_array[sq_htmlspecialchars($key, $quote_style)]
765 = sq_htmlspecialchars($val, $quote_style);
766 }
767 return $return_array;
768
769 // sanitize strings only
770 //
771 } else if (is_string($value)) {
772 if ($quote_style === TRUE)
773 return str_replace(array('\'', '"'), array('&#039;', '&quot;'), $value);
774 else
775 return htmlspecialchars($value, $quote_style);
776 }
777
778 // anything else gets returned with no changes
779 //
780 return $value;
781
782}