4 * NOTE: The settings here should probably not need to be changed.
5 * The user-configurable settings have been moved to IniConfig.php
6 * The run-time code has been moved to lib/IniConfig.php:fix_configs()
9 if (!defined("LC_ALL")) {
10 // Backward compatibility (for PHP < 4.0.5)
11 if (!check_php_version(4,0,5)) {
12 define("LC_ALL", "LC_ALL");
13 define("LC_CTYPE", "LC_CTYPE");
16 define("LC_CTYPE", 2);
20 define ('_DEBUG_VERBOSE', 1); // verbose msgs and add validator links on footer
21 define ('_DEBUG_PAGELINKS', 2); // list the extraced pagelinks at the top of each pages
22 define ('_DEBUG_PARSER', 4); // verbose parsing steps
23 define ('_DEBUG_TRACE', 8); // test php memory usage, prints php debug backtraces
24 define ('_DEBUG_INFO', 16);
25 define ('_DEBUG_APD', 32); // APD tracing/profiling
26 define ('_DEBUG_LOGIN', 64); // verbose login debug-msg (settings and reason for failure)
27 define ('_DEBUG_SQL', 128); // force check db, force optimize, print some debugging logs
28 define ('_DEBUG_REMOTE', 256); // remote debug into subrequests (xmlrpc, ajax, wikiwyg, ...)
29 // or test local SearchHighlight.
30 // internal links have persistent ?start_debug=1
33 return (substr(php_sapi_name(),0,3) == 'cgi' and
34 isset($GLOBALS['HTTP_ENV_VARS']['GATEWAY_INTERFACE']) and
35 @preg_match('/CGI/',$GLOBALS['HTTP_ENV_VARS']['GATEWAY_INTERFACE']));
39 // copy some $_ENV vars to $_SERVER for CGI compatibility. php does it automatically since when?
41 foreach (explode(':','SERVER_SOFTWARE:SERVER_NAME:GATEWAY_INTERFACE:SERVER_PROTOCOL:SERVER_PORT:REQUEST_METHOD:HTTP_ACCEPT:PATH_INFO:PATH_TRANSLATED:SCRIPT_NAME:QUERY_STRING:REMOTE_HOST:REMOTE_ADDR:REMOTE_USER:AUTH_TYPE:CONTENT_TYPE:CONTENT_LENGTH') as $key) {
42 $GLOBALS['HTTP_SERVER_VARS'][$key] = &$GLOBALS['HTTP_ENV_VARS'][$key];
47 // essential internal stuff
48 set_magic_quotes_runtime(0);
51 * Browser Detection Functions
54 * NS/IE < 4.0 doesn't accept < ? xml version="1.0" ? >
55 * NS/IE < 4.0 cannot display PNG
56 * NS/IE < 4.0 cannot display all XHTML tags
57 * NS < 5.0 needs textarea wrap=virtual
58 * IE55 has problems with transparent PNG's
61 function browserAgent() {
62 static $HTTP_USER_AGENT = false;
63 if ($HTTP_USER_AGENT !== false) return $HTTP_USER_AGENT;
64 if (!$HTTP_USER_AGENT)
65 $HTTP_USER_AGENT = @$GLOBALS['HTTP_SERVER_VARS']['HTTP_USER_AGENT'];
66 if (!$HTTP_USER_AGENT) // CGI
67 $HTTP_USER_AGENT = @$GLOBALS['HTTP_ENV_VARS']['HTTP_USER_AGENT'];
68 if (!$HTTP_USER_AGENT) // local CGI testing
69 $HTTP_USER_AGENT = 'none';
70 return $HTTP_USER_AGENT;
72 function browserDetect($match) {
73 return strstr(strtolower(browserAgent()), strtolower($match));
75 // returns a similar number for Netscape/Mozilla (gecko=5.0)/IE/Opera features.
76 function browserVersion() {
77 $agent = browserAgent();
78 if (strstr($agent, "Mozilla/4.0 (compatible; MSIE"))
79 return (float) substr($agent, 30);
80 elseif (strstr($agent, "Mozilla/5.0 (compatible; Konqueror/"))
81 return (float) substr($agent, 36);
83 return (float) substr($agent, 8);
85 function isBrowserIE() {
86 return (browserDetect('Mozilla/') and
87 browserDetect('MSIE'));
89 // problem with transparent PNG's
90 function isBrowserIE55() {
91 return (isBrowserIE() and
92 browserVersion() > 5.1 and browserVersion() < 6.0);
94 // old Netscape prior to Mozilla
95 function isBrowserNetscape($version = false) {
96 $agent = (browserDetect('Mozilla/') and
97 ! browserDetect('Gecko/') and
98 ! browserDetect('MSIE'));
99 if ($version) return $agent and browserVersion() >= $version;
103 function isBrowserNS3() {
104 return (isBrowserNetscape() and browserVersion() < 4.0);
107 function isBrowserNS4() {
108 return (isBrowserNetscape() and browserVersion() < 5.0);
110 // must omit display alternate stylesheets: konqueror 3.1.4
111 // http://sourceforge.net/tracker/index.php?func=detail&aid=945154&group_id=6121&atid=106121
112 function isBrowserKonqueror($version = false) {
113 if ($version) return browserDetect('Konqueror/') and browserVersion() >= $version;
114 return browserDetect('Konqueror/');
116 // MacOSX Safari has certain limitations. Need detection and patches.
117 // * no <object>, only <embed>
118 function isBrowserSafari($version = false) {
119 $found = browserDetect('spoofer') or browserDetect('applewebkit');
120 if ($version) return $found and browserVersion() >= $version;
123 function isBrowserOpera($version = false) {
124 if ($version) return browserDetect('Opera/') and browserVersion() >= $version;
125 return browserDetect('Opera/');
130 * If $LANG is undefined:
131 * Smart client language detection, based on our supported languages
132 * HTTP_ACCEPT_LANGUAGE="de-at,en;q=0.5"
134 * We should really check additionally if the i18n HomePage version is defined.
135 * So must defer this to the request loop.
137 function guessing_lang ($languages=false) {
140 $languages = array("en","de","es","fr","it","ja","zh","nl","sv");
141 // ignore possible "_<territory>" and codeset "ja.utf8"
143 require_once("lib/WikiTheme.php");
144 $languages = listAvailableLanguages();
145 if (defined('DEFAULT_LANGUAGE') and in_array(DEFAULT_LANGUAGE, $languages))
148 if ($i = array_search(DEFAULT_LANGUAGE, $languages) !== false) {
149 array_splice($languages, $i, 1);
151 array_unshift($languages, DEFAULT_LANGUAGE);
152 foreach ($languages as $lang) {
153 $arr = FileFinder::locale_versions($lang);
154 $languages = array_merge($languages, $arr);
161 if (isset($GLOBALS['request'])) // in fixup-dynamic-config there's no request yet
162 $accept = $GLOBALS['request']->get('HTTP_ACCEPT_LANGUAGE');
163 elseif (!empty($_SERVER['HTTP_ACCEPT_LANGUAGE']))
164 $accept = $_SERVER['HTTP_ACCEPT_LANGUAGE'];
167 $lang_list = array();
168 $list = explode(",", $accept);
169 for ($i=0; $i<count($list); $i++) {
170 $pos = strchr($list[$i], ";") ;
171 if ($pos === false) {
172 // No Q it is only a locale...
173 $lang_list[$list[$i]] = 100;
176 $q = explode(";",$list[$i]) ;
178 $q = explode("=",$q[1]) ;
179 $lang_list[$loc] = $q[1]*100 ;
186 // compare with languages, ignoring sublang and charset
187 foreach ($lang_list as $lang => $q) {
188 if (in_array($lang, $languages))
190 // de_DE.iso8859-1@euro => de_DE.iso8859-1, de_DE, de
191 // de-DE => de-DE, de
192 foreach (array('@', '.', '_') as $sep) {
193 if ( ($tail = strchr($lang, $sep)) ) {
194 $lang_short = substr($lang, 0, -strlen($tail));
195 if (in_array($lang_short, $languages))
199 if ($pos = strchr($lang, "-") and in_array(substr($lang, 0, $pos), $languages))
200 return substr($lang, 0, $pos);
203 return $languages[0];
209 * This is a version of the builtin setlocale() which is
210 * smart enough to try some alternatives...
212 * @param mixed $category
213 * @param string $locale
214 * @return string The new locale, or <code>false</code> if unable
215 * to set the requested locale.
219 function guessing_setlocale ($category, $locale) {
220 $alt = array('en' => array('C', 'en_US', 'en_GB', 'en_AU', 'en_CA', 'english'),
221 'de' => array('de_DE', 'de_DE', 'de_DE@euro',
222 'de_AT@euro', 'de_AT', 'German_Austria.1252', 'deutsch',
224 'es' => array('es_ES', 'es_MX', 'es_AR', 'spanish'),
225 'nl' => array('nl_NL', 'dutch'),
226 'fr' => array('fr_FR', 'français', 'french'),
227 'it' => array('it_IT'),
228 'sv' => array('sv_SE'),
229 'ja.utf-8' => array('ja_JP','ja_JP.utf-8','japanese'),
230 'ja.euc-jp' => array('ja_JP','ja_JP.eucJP','japanese.euc'),
231 'zh' => array('zh_TW', 'zh_CN'),
233 if (!$locale or $locale=='C') {
234 // do the reverse: return the detected locale collapsed to our LANG
235 $locale = setlocale($category, '');
237 if (strstr($locale, '_')) list ($lang) = split('_', $locale);
238 else $lang = $locale;
239 if (strlen($lang) > 2) {
240 foreach ($alt as $try => $locs) {
241 if (in_array($locale, $locs) or in_array($lang, $locs)) {
242 //if (empty($GLOBALS['LANG'])) $GLOBALS['LANG'] = $try;
249 if (strlen($locale) == 2)
252 list ($lang) = split('_', $locale);
253 if (!isset($alt[$lang]))
256 foreach ($alt[$lang] as $try) {
257 if ($res = setlocale($category, $try))
259 // Try with charset appended...
260 $try = $try . '.' . $GLOBALS['charset'];
261 if ($res = setlocale($category, $try))
263 foreach (array(".", '@', '_') as $sep) {
264 if ($i = strpos($try, $sep)) {
265 $try = substr($try, 0, $i);
266 if (($res = setlocale($category, $try)))
272 // A standard locale name is typically of the form
273 // language[_territory][.codeset][@modifier], where language is
274 // an ISO 639 language code, territory is an ISO 3166 country code,
275 // and codeset is a character set or encoding identifier like
276 // ISO-8859-1 or UTF-8.
280 function update_locale($loc) {
281 // $LANG or DEFAULT_LANGUAGE is too less information, at least on unix for
282 // setlocale(), for bindtextdomain() to succeed.
283 $setlocale = guessing_setlocale(LC_ALL, $loc); // [56ms]
284 if (!$setlocale) { // system has no locale for this language, so gettext might fail
285 $setlocale = FileFinder::_get_lang();
286 list ($setlocale,) = split('_', $setlocale, 2);
287 $setlocale = guessing_setlocale(LC_ALL, $setlocale); // try again
288 if (!$setlocale) $setlocale = $loc;
290 // Try to put new locale into environment (so any
291 // programs we run will get the right locale.)
292 if (!function_exists('bindtextdomain')) {
293 // Reinitialize translation array.
296 // do reinit to purge PHP's static cache [43ms]
297 if ( ($lcfile = FindLocalizedFile("LC_MESSAGES/phpwiki.php", 'missing_ok', 'reinit')) ) {
301 // If PHP is in safe mode, this is not allowed,
303 @putenv("LC_ALL=$setlocale");
304 @putenv("LANG=$loc");
305 @putenv("LANGUAGE=$loc");
308 // To get the POSIX character classes in the PCRE's (e.g.
309 // [[:upper:]]) to match extended characters (e.g. GrüßGott), we have
310 // to set the locale, using setlocale().
312 // The problem is which locale to set? We would like to recognize all
313 // upper-case characters in the iso-8859-1 character set as upper-case
314 // characters --- not just the ones which are in the current $LANG.
316 // As it turns out, at least on my system (Linux/glibc-2.2) as long as
317 // you setlocale() to anything but "C" it works fine. (I'm not sure
318 // whether this is how it's supposed to be, or whether this is a bug
321 // We don't currently use the locale setting for anything else, so for
322 // now, just set the locale to US English.
324 // FIXME: Not all environments may support en_US? We should probably
325 // have a list of locales to try.
326 if (setlocale(LC_CTYPE, 0) == 'C') {
327 $x = setlocale(LC_CTYPE, 'en_US.' . $GLOBALS['charset']);
329 $x = setlocale(LC_CTYPE, $setlocale);
335 /** string pcre_fix_posix_classes (string $regexp)
337 * Older version (pre 3.x?) of the PCRE library do not support
338 * POSIX named character classes (e.g. [[:alnum:]]).
340 * This is a helper function which can be used to convert a regexp
341 * which contains POSIX named character classes to one that doesn't.
343 * All instances of strings like '[:<class>:]' are replaced by the equivalent
344 * enumerated character class.
346 * Implementation Notes:
348 * Currently we use hard-coded values which are valid only for
349 * ISO-8859-1. Also, currently on the classes [:alpha:], [:alnum:],
350 * [:upper:] and [:lower:] are implemented. (The missing classes:
351 * [:blank:], [:cntrl:], [:digit:], [:graph:], [:print:], [:punct:],
352 * [:space:], and [:xdigit:] could easily be added if needed.)
354 * This is a hack. I tried to generate these classes automatically
355 * using ereg(), but discovered that in my PHP, at least, ereg() is
356 * slightly broken w.r.t. POSIX character classes. (It includes
357 * "\xaa" and "\xba" in [:alpha:].)
359 * So for now, this will do. --Jeff <dairiki@dairiki.org> 14 Mar, 2001
361 function pcre_fix_posix_classes ($regexp) {
363 if (!isset($charset))
364 $charset = CHARSET; // get rid of constant. pref is dynamic and language specific
365 if (in_array($GLOBALS['LANG'], array('zh')))
367 if (strstr($GLOBALS['LANG'],'.utf-8'))
369 elseif (strstr($GLOBALS['LANG'],'.euc-jp'))
371 elseif (in_array($GLOBALS['LANG'], array('ja')))
372 //$charset = 'utf-8';
375 if (strtolower($charset) == 'utf-8') { // thanks to John McPherson
376 // until posix class names/pcre work with utf-8
377 if (preg_match('/[[:upper:]]/', '\xc4\x80'))
379 // utf-8 non-ascii chars: most common (eg western) latin chars are 0xc380-0xc3bf
380 // we currently ignore other less common non-ascii characters
381 // (eg central/east european) latin chars are 0xc432-0xcdbf and 0xc580-0xc5be
382 // and indian/cyrillic/asian languages
384 // this replaces [[:lower:]] with utf-8 match (Latin only)
385 $regexp = preg_replace('/\[\[\:lower\:\]\]/','(?:[a-z]|\xc3[\x9f-\xbf]|\xc4[\x81\x83\x85\x87])',
387 // this replaces [[:upper:]] with utf-8 match (Latin only)
388 $regexp = preg_replace('/\[\[\:upper\:\]\]/','(?:[A-Z]|\xc3[\x80-\x9e]|\xc4[\x80\x82\x84\x86])',
390 } elseif (preg_match('/[[:upper:]]/', 'Ä')) {
391 // First check to see if our PCRE lib supports POSIX character
392 // classes. If it does, there's nothing to do.
395 static $classes = array(
396 'alnum' => "0-9A-Za-z\xc0-\xd6\xd8-\xf6\xf8-\xff",
397 'alpha' => "A-Za-z\xc0-\xd6\xd8-\xf6\xf8-\xff",
398 'upper' => "A-Z\xc0-\xd6\xd8-\xde",
399 'lower' => "a-z\xdf-\xf6\xf8-\xff"
401 $keys = join('|', array_keys($classes));
402 return preg_replace("/\[:($keys):]/e", '$classes["\1"]', $regexp);
405 function deduce_script_name() {
406 $s = &$GLOBALS['HTTP_SERVER_VARS'];
407 $script = @$s['SCRIPT_NAME'];
408 if (empty($script) or $script[0] != '/') {
409 // Some places (e.g. Lycos) only supply a relative name in
410 // SCRIPT_NAME, but give what we really want in SCRIPT_URL.
411 if (!empty($s['SCRIPT_URL']))
412 $script = $s['SCRIPT_URL'];
417 function IsProbablyRedirectToIndex () {
418 // This might be a redirect to the DirectoryIndex,
419 // e.g. REQUEST_URI = /dir/?some_action got redirected
420 // to SCRIPT_NAME = /dir/index.php
422 // In this case, the proper virtual path is still
423 // $SCRIPT_NAME, since pages appear at
424 // e.g. /dir/index.php/HomePage.
426 $requri = preg_replace('/\?.*$/','',$GLOBALS['HTTP_SERVER_VARS']['REQUEST_URI']);
427 $requri = preg_quote($requri, '%');
428 return preg_match("%^${requri}[^/]*$%", $GLOBALS['HTTP_SERVER_VARS']['SCRIPT_NAME']);
432 if (!function_exists('array_key_exists')) { // lib/IniConfig.php, sqlite, adodb, ...
433 function array_key_exists($item, $array) {
434 return isset($array[$item]);
439 if (!function_exists('is_scalar')) { // lib/stdlib.php:wikihash()
440 function is_scalar($x) {
441 return is_numeric($x) or is_string($x) or is_float($x) or is_bool($x);
445 // => php-4.2.0. pear wants to break old php's! DB uses it now.
446 if (!function_exists('is_a')) {
447 function is_a($item,$class) {
448 return isa($item,$class);
453 // by bradhuizenga at softhome dot net from the php docs
454 if (!function_exists('str_ireplace')) {
455 function str_ireplace($find, $replace, $string) {
456 if (!is_array($find)) $find = array($find);
457 if (!is_array($replace)) {
458 if (!is_array($find))
459 $replace = array($replace);
461 // this will duplicate the string into an array the size of $find
465 for ($i = 0; $i < $c; $i++) {
466 $replace[$i] = $rString;
470 foreach ($find as $fKey => $fItem) {
471 $between = explode(strtolower($fItem),strtolower($string));
473 foreach ($between as $bKey => $bItem) {
474 $between[$bKey] = substr($string,$pos,strlen($bItem));
475 $pos += strlen($bItem) + strlen($fItem);
477 $string = implode($replace[$fKey], $between);
484 * safe php4 definition for clone.
485 * php5 copies objects by reference, but we need to clone "deep copy" in some places.
487 * We need to eval it as workaround for the php5 parser.
488 * See http://www.acko.net/node/54
490 if (!check_php_version(5)) {
492 function clone($object) {
499 * array_diff_assoc() returns an array containing all the values from array1 that are not
500 * present in any of the other arguments. Note that the keys are used in the comparison
501 * unlike array_diff(). In core since php-4.3.0
502 * Our fallback here supports only hashes and two args.
503 * $array1 = array("a" => "green", "b" => "brown", "c" => "blue");
504 * $array2 = array("a" => "green", "y" => "yellow", "r" => "red");
505 * => b => brown, c => blue
507 if (!function_exists('array_diff_assoc')) {
508 function array_diff_assoc($a1, $a2) {
510 foreach ($a1 as $k => $v) {
511 if (!isset($a2[$k]) or !$a2[$k])
519 * wordwrap() might crash between 4.1.2 and php-4.3.0RC2, fixed in 4.3.0
520 * See http://bugs.php.net/bug.php?id=20927 and
521 * http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2002-1396
522 * Improved version of wordwrap2() in the comments at http://www.php.net/wordwrap
524 function safe_wordwrap($str, $width=80, $break="\n", $cut=false) {
525 if (check_php_version(4,3))
526 return wordwrap($str, $width, $break, $cut);
527 elseif (!check_php_version(4,1,2))
528 return wordwrap($str, $width, $break, $cut);
531 $tag = 0; $result = ''; $wordlen = 0;
532 for ($i = 0; $i < $len; $i++) {
534 // don't break inside xml tags
537 } elseif ($chr == '>') {
540 if (!function_exists('ctype_space')) {
541 if (preg_match('/^\s$/', $chr))
546 elseif (ctype_space($chr)) {
552 if ((!$tag) && ($wordlen) && (!($wordlen % $width))) {
559 if (isset($str) && isset($width)) {
560 $ex = explode(" ", $str); // wrong: must use preg_split \s+
562 for ($i=0; $i<count($ex); $i++) {
563 // $word_array = preg_split('//', $ex[$i], -1, PREG_SPLIT_NO_EMPTY);
564 // delete #&& !is_numeric($ex[$i])# if you want force it anyway
565 if (strlen($ex[$i]) > $width && !is_numeric($ex[$i])) {
568 for($b=0; $b < (ceil(strlen($ex[$i]) / $width)); $b++) {
569 $rp[$i] .= substr($ex[$i], $where, $width).$break;
576 return implode(" ",$rp);
583 function getUploadFilePath() {
585 if (defined('UPLOAD_FILE_PATH')) {
586 // Force creation of the returned directory if it does not exist.
587 if (!file_exists(UPLOAD_FILE_PATH)) {
588 mkdir(UPLOAD_FILE_PATH, 0775);
590 if (string_ends_with(UPLOAD_FILE_PATH, "/")
591 or string_ends_with(UPLOAD_FILE_PATH, "\\")) {
592 return UPLOAD_FILE_PATH;
594 return UPLOAD_FILE_PATH."/";
597 return defined('PHPWIKI_DIR')
598 ? PHPWIKI_DIR . "/uploads/"
599 : realpath(dirname(__FILE__) . "/../uploads/");
601 function getUploadDataPath() {
602 if (defined('UPLOAD_DATA_PATH')) {
603 return string_ends_with(UPLOAD_DATA_PATH, "/")
604 ? UPLOAD_DATA_PATH : UPLOAD_DATA_PATH."/";
606 return SERVER_URL . (string_ends_with(DATA_PATH, "/") ? '' : "/")
607 . DATA_PATH . '/uploads/';
611 * htmlspecialchars doesn't support some special 8bit charsets, which we do want to support.
612 * Well it just prints a warning which we could circumvent.
613 * Note: unused, since php htmlspecialchars does the same, just prints a warning which we silence
616 function htmlspecialchars_workaround($str, $quote=ENT_COMPAT, $charset='iso-8859-1') {
617 if (in_array(strtolower($charset),
618 array('iso-8859-2', 'iso8859-2', 'latin-2', 'latin2')))
620 if (! ($quote & ENT_NOQUOTES)) {
621 $str = str_replace("\"", """,
624 if ($quote & ENT_QUOTES) {
625 $str = str_replace("\'", "'",
628 return str_replace(array("<", ">", "&"),
629 array("<", ">", "&"), $str);
632 return htmlspecialchars($str, $quote, $charset);
638 * htmlspecialchars doesn't support some special 8bit charsets, which we do want to support.
639 * Well it just prints a warning which we could circumvent.
640 * Note: unused, since php htmlspecialchars does the same, just prints a warning which we silence
643 function htmlspecialchars_workaround($str, $quote=ENT_COMPAT, $charset='iso-8859-1') {
644 if (in_array(strtolower($charset),
645 array('iso-8859-2', 'iso8859-2', 'latin-2', 'latin2')))
647 if (! ($quote & ENT_NOQUOTES)) {
648 $str = str_replace("\"", """,
651 if ($quote & ENT_QUOTES) {
652 $str = str_replace("\'", "'",
655 return str_replace(array("<", ">", "&"),
656 array("<", ">", "&"), $str);
659 return htmlspecialchars($str, $quote, $charset);
669 // c-hanging-comment-ender-p: nil
670 // indent-tabs-mode: nil