Just fiddling. Give credit where credit is due. Template class header() function...
[squirrelmail.git] / include / init.php
1 <?php
2
3 /**
4 * init.php -- initialisation file
5 *
6 * File should be loaded in every file in src/ or plugins that occupate an entire frame
7 *
8 * @copyright &copy; 2006 The SquirrelMail Project Team
9 * @license http://opensource.org/licenses/gpl-license.php GNU Public License
10 * @version $Id$
11 * @package squirrelmail
12 */
13
14 /**
15 * This is a development version so in order to track programmer mistakes we
16 * set the error reporting to E_ALL
17 FIXME: disabling this for now, because we now have $sm_debug_mode, but the problem with that is that we don't know what it will be until we have loaded the config file, a good 175 lines below after several important files have been included, etc. For now, we'll trust that developers have turned on E_ALL in php.ini anyway, but this can be uncommented if not.
18 */
19 //error_reporting(E_ALL);
20
21
22
23 /**
24 * Make sure we have a page name
25 *
26 */
27 if ( !defined('PAGE_NAME') ) define('PAGE_NAME', NULL);
28
29
30 /**
31 * If register_globals are on, unregister globals.
32 * Second test covers boolean set as string (php_value register_globals off).
33 */
34 if ((bool) ini_get('register_globals') &&
35 strtolower(ini_get('register_globals'))!='off') {
36 /**
37 * Remove all globals that are not reserved by PHP
38 * 'value' and 'key' are used by foreach. Don't unset them inside foreach.
39 */
40 foreach ($GLOBALS as $key => $value) {
41 switch($key) {
42 case 'HTTP_POST_VARS':
43 case '_POST':
44 case 'HTTP_GET_VARS':
45 case '_GET':
46 case 'HTTP_COOKIE_VARS':
47 case '_COOKIE':
48 case 'HTTP_SERVER_VARS':
49 case '_SERVER':
50 case 'HTTP_ENV_VARS':
51 case '_ENV':
52 case 'HTTP_POST_FILES':
53 case '_FILES':
54 case '_REQUEST':
55 case 'HTTP_SESSION_VARS':
56 case '_SESSION':
57 case 'GLOBALS':
58 case 'key':
59 case 'value':
60 break;
61 default:
62 unset($GLOBALS[$key]);
63 }
64 }
65 // Unset variables used in foreach
66 unset($GLOBALS['key']);
67 unset($GLOBALS['value']);
68 }
69
70 /**
71 * Used as a dummy value, e.g., for passing as an empty
72 * hook argument (where the value is passed by reference,
73 * and therefore NULL itself is not acceptable).
74 */
75 global $null;
76 $null = NULL;
77
78 /**
79 * [#1518885] session.use_cookies = off breaks SquirrelMail
80 *
81 * When session cookies are not used, all http redirects, meta refreshes,
82 * src/download.php and javascript URLs are broken. Setting must be set
83 * before session is started.
84 */
85 if (!(bool)ini_get('session.use_cookies') ||
86 ini_get('session.use_cookies') == 'off') {
87 ini_set('session.use_cookies','1');
88 }
89
90 /**
91 * Initialize seed of random number generator.
92 * We use a number of things to randomize input: current time in ms,
93 * info about the remote client, info about the current process, the
94 * randomness of uniqid and stat of the current file.
95 *
96 * We seed this here only once per init, not only to save cycles
97 * but also to make the result of mt_rand more random (it now also
98 * depends on the number of times mt_rand was called before in this
99 * execution.
100 */
101 $seed = microtime() . $_SERVER['REMOTE_PORT'] . $_SERVER['REMOTE_ADDR'] . getmypid();
102
103 if (function_exists('getrusage')) {
104 /* Avoid warnings with Win32 */
105 $dat = @getrusage();
106 if (isset($dat) && is_array($dat)) { $seed .= implode('', $dat); }
107 }
108
109 if(!empty($_SERVER['UNIQUE_ID'])) {
110 $seed .= $_SERVER['UNIQUE_ID'];
111 }
112
113 $seed .= uniqid(mt_rand(),TRUE);
114 $seed .= implode( '', stat( __FILE__) );
115
116 /** PHP 4.2 and up don't require seeding, but their used seed algorithm
117 * is of questionable quality, so we keep doing it ourselves. */
118 mt_srand(hexdec(md5($seed)));
119
120 /**
121 * calculate SM_PATH and calculate the base_uri
122 * assumptions made: init.php is only called from plugins or from the src dir.
123 * files in the plugin directory may not be part of a subdirectory called "src"
124 *
125 */
126 if (isset($_SERVER['SCRIPT_NAME'])) {
127 $a = explode('/', $_SERVER['SCRIPT_NAME']);
128 } elseif (isset($HTTP_SERVER_VARS['SCRIPT_NAME'])) {
129 $a = explode('/', $HTTP_SERVER_VARS['SCRIPT_NAME']);
130 } else {
131 $error = 'Unable to detect script environment. Please test your PHP '
132 . 'settings and send your PHP core configuration, $_SERVER and '
133 . '$HTTP_SERVER_VARS contents to the SquirrelMail developers.';
134 die($error);
135 }
136 $sSM_PATH = '';
137 for($i = count($a) -2; $i > -1; --$i) {
138 $sSM_PATH .= '../';
139 if ($a[$i] === 'src' || $a[$i] === 'plugins') {
140 break;
141 }
142 }
143
144 $base_uri = implode('/', array_slice($a, 0, $i)). '/';
145
146 define('SM_PATH',$sSM_PATH);
147 define('SM_BASE_URI', $base_uri);
148
149
150 /**
151 * global var $bInit is used to check if initialisation took place.
152 * At this moment it's a workarounf for the include of addrbook_search_html
153 * inside compose.php. If we found a better way then remove this. Do only use
154 * this var if you know for sure a page can be called stand alone and be included
155 * in another file.
156 */
157 $bInit = true;
158
159 /**
160 * This theme as a failsafe if no themes were found, or if we error
161 * out before anything could be initialised.
162 */
163 $color = array();
164 $color[0] = '#DCDCDC'; /* light gray TitleBar */
165 $color[1] = '#800000'; /* red */
166 $color[2] = '#CC0000'; /* light red Warning/Error Messages */
167 $color[3] = '#A0B8C8'; /* green-blue Left Bar Background */
168 $color[4] = '#FFFFFF'; /* white Normal Background */
169 $color[5] = '#FFFFCC'; /* light yellow Table Headers */
170 $color[6] = '#000000'; /* black Text on left bar */
171 $color[7] = '#0000CC'; /* blue Links */
172 $color[8] = '#000000'; /* black Normal text */
173 $color[9] = '#ABABAB'; /* mid-gray Darker version of #0 */
174 $color[10] = '#666666'; /* dark gray Darker version of #9 */
175 $color[11] = '#770000'; /* dark red Special Folders color */
176 $color[12] = '#EDEDED';
177 $color[13] = '#800000'; /* (dark red) Color for quoted text -- > 1 quote */
178 $color[14] = '#ff0000'; /* (red) Color for quoted text -- >> 2 or more */
179 $color[15] = '#002266'; /* (dark blue) Unselectable folders */
180 $color[16] = '#ff9933'; /* (orange) Highlight color */
181
182 require(SM_PATH . 'include/constants.php');
183 require(SM_PATH . 'functions/global.php');
184 require(SM_PATH . 'functions/strings.php');
185 require(SM_PATH . 'functions/arrays.php');
186
187 /* load default configuration */
188 require(SM_PATH . 'config/config_default.php');
189 /* reset arrays in default configuration */
190 $ldap_server = array();
191 $plugins = array();
192 $fontsets = array();
193 $aTemplateSet = array();
194 $aTemplateSet[0]['ID'] = 'default';
195 $aTemplateSet[0]['NAME'] = 'Default';
196
197 /* load site configuration */
198 require(SM_PATH . 'config/config.php');
199 /* load local configuration overrides */
200 if (file_exists(SM_PATH . 'config/config_local.php')) {
201 require(SM_PATH . 'config/config_local.php');
202 }
203
204
205 /**
206 * Set PHP error reporting level based on the SquirrelMail debug mode
207 */
208 $error_level = 0;
209 if ($sm_debug_mode & SM_DEBUG_MODE_SIMPLE)
210 $error_level |= E_ERROR;
211 if ($sm_debug_mode & SM_DEBUG_MODE_MODERATE
212 || $sm_debug_mode & SM_DEBUG_MODE_ADVANCED)
213 $error_level |= E_ALL;
214 if ($sm_debug_mode & SM_DEBUG_MODE_STRICT)
215 $error_level |= E_STRICT;
216 error_reporting($error_level);
217
218
219 require(SM_PATH . 'functions/plugin.php');
220 require(SM_PATH . 'include/languages.php');
221 require(SM_PATH . 'class/template/Template.class.php');
222 require(SM_PATH . 'class/error.class.php');
223
224 /**
225 * If magic_quotes_runtime is on, SquirrelMail breaks in new and creative ways.
226 * Force magic_quotes_runtime off.
227 * tassium@squirrelmail.org - I put it here in the hopes that all SM code includes this.
228 * If there's a better place, please let me know.
229 */
230 ini_set('magic_quotes_runtime','0');
231
232
233 /* if running with magic_quotes_gpc then strip the slashes
234 from POST and GET global arrays */
235 if (function_exists('get_magic_quotes_gpc') && @get_magic_quotes_gpc()) {
236 sqstripslashes($_GET);
237 sqstripslashes($_POST);
238 }
239
240
241 /* strip any tags added to the url from PHP_SELF.
242 This fixes hand crafted url XXS expoits for any
243 page that uses PHP_SELF as the FORM action */
244 $_SERVER['PHP_SELF'] = strip_tags($_SERVER['PHP_SELF']);
245
246 $PHP_SELF = php_self();
247
248 /**
249 * Initialize the session
250 */
251
252 /** set the name of the session cookie */
253 if (!isset($session_name) || !$session_name) {
254 $session_name = 'SQMSESSID';
255 }
256
257 /**
258 * When session.auto_start is On we want to destroy/close the session
259 */
260 $sSessionAutostartName = session_name();
261 $sSessionAutostartID = session_id();
262 if (!empty($sSessionAutostartID) && $sSessionAutostartName !== $session_name) {
263 $sCookiePath = ini_get('session.cookie_path');
264 $sCookieDomain = ini_get('session.cookie_domain');
265 // reset the cookie
266 sqsetcookie($sSessionAutostartName,'',1,$sCookiePath,$sCookieDomain);
267 @session_destroy();
268 session_write_close();
269 }
270
271 /**
272 * includes from classes stored in the session
273 */
274 require(SM_PATH . 'class/mime.class.php');
275
276 ini_set('session.name' , $session_name);
277 session_set_cookie_params (0, $base_uri);
278 sqsession_is_active();
279
280 /**
281 * When on login page, have to reset the user session, making
282 * sure to save session restore data first
283 */
284 if (PAGE_NAME == 'login') {
285 if (!sqGetGlobalVar('session_expired_post', $sep, SQ_SESSION))
286 $sep = '';
287 if (!sqGetGlobalVar('session_expired_location', $sel, SQ_SESSION))
288 $sel = '';
289 sqsession_destroy();
290 session_write_close();
291
292 /**
293 * in some rare instances, the session seems to stick
294 * around even after destroying it (!!), so if it does,
295 * we'll manually flatten the $_SESSION data
296 */
297 if (!empty($_SESSION))
298 $_SESSION = array();
299
300 /**
301 * Allow administrators to define custom session handlers
302 * for SquirrelMail without needing to change anything in
303 * php.ini (application-level).
304 *
305 * In config_local.php, admin needs to put:
306 *
307 * $custom_session_handlers = array(
308 * 'my_open_handler',
309 * 'my_close_handler',
310 * 'my_read_handler',
311 * 'my_write_handler',
312 * 'my_destroy_handler',
313 * 'my_gc_handler',
314 * );
315 * session_module_name('user');
316 * session_set_save_handler(
317 * $custom_session_handlers[0],
318 * $custom_session_handlers[1],
319 * $custom_session_handlers[2],
320 * $custom_session_handlers[3],
321 * $custom_session_handlers[4],
322 * $custom_session_handlers[5]
323 * );
324 *
325 * We need to replicate that code once here because PHP has
326 * long had a bug that resets the session handler mechanism
327 * when the session data is also destroyed. Because of this
328 * bug, even administrators who define custom session handlers
329 * via a PHP pre-load defined in php.ini (auto_prepend_file)
330 * will still need to define the $custom_session_handlers array
331 * in config_local.php.
332 */
333 global $custom_session_handlers;
334 if (!empty($custom_session_handlers)) {
335 $open = $custom_session_handlers[0];
336 $close = $custom_session_handlers[1];
337 $read = $custom_session_handlers[2];
338 $write = $custom_session_handlers[3];
339 $destroy = $custom_session_handlers[4];
340 $gc = $custom_session_handlers[5];
341 session_module_name('user');
342 session_set_save_handler($open, $close, $read, $write, $destroy, $gc);
343 }
344
345 sqsession_is_active();
346 session_regenerate_id();
347
348 // put session restore data back into session if necessary
349 if (!empty($sel)) {
350 sqsession_register($sel, 'session_expired_location');
351 if (!empty($sep))
352 sqsession_register($sep, 'session_expired_post');
353 }
354 }
355
356 /**
357 * SquirrelMail internal version number -- DO NOT CHANGE
358 * $sm_internal_version = array (release, major, minor)
359 */
360 $SQM_INTERNAL_VERSION = explode('.', SM_VERSION, 3);
361 $SQM_INTERNAL_VERSION[2] = intval($SQM_INTERNAL_VERSION[2]);
362
363
364 /* load prefs system; even when user not logged in, should be OK to do this here */
365 require(SM_PATH . 'functions/prefs.php');
366
367
368 /* if plugins are disabled only for one user and
369 * the current user is NOT that user, turn them
370 * back on
371 */
372 sqgetGlobalVar('username', $username, SQ_SESSION);
373 if ($disable_plugins && !empty($disable_plugins_user)
374 && $username != $disable_plugins_user) {
375 $disable_plugins = false;
376 }
377
378
379 /* remove all plugins if they are disabled */
380 if ($disable_plugins) {
381 $plugins = array();
382 }
383
384
385 /**
386 * Include Compatibility plugin if available.
387 */
388 if (!$disable_plugins && file_exists(SM_PATH . 'plugins/compatibility/functions.php'))
389 include_once(SM_PATH . 'plugins/compatibility/functions.php');
390
391
392 /**
393 * MAIN PLUGIN LOADING CODE HERE
394 * On init, we no longer need to load all plugin setup files.
395 * Now, we load the statically generated hook registrations here
396 * and let the hook calls include only the plugins needed.
397 */
398 $squirrelmail_plugin_hooks = array();
399 if (!$disable_plugins && file_exists(SM_PATH . 'config/plugin_hooks.php')) {
400 //FIXME: if we keep the plugin hooks array static like this, it seems like we should also keep the template files list in a static file too (when a new user session is started or the template set is changed, the code will dynamically iterate through the directory heirarchy of the template directory and catalog all the template files therein (and store the "catalog" in PHP session) -- instead, we could do that once at config-time and keep that static so SM can just include the file just like the line below)
401 require(SM_PATH . 'config/plugin_hooks.php');
402 }
403
404
405 /**
406 * Plugin authors note that the "config_override" hook used to be
407 * executed here, but please adapt your plugin to use this "prefs_backend"
408 * hook instead, making sure that it does NOT return anything, since
409 * doing so will interfere with proper prefs system functionality.
410 * Of course, otherwise, this hook may be used to do any configuration
411 * overrides as needed, as well as set up a custom preferences backend.
412 */
413 $prefs_backend = do_hook('prefs_backend', $null);
414 if (isset($prefs_backend) && !empty($prefs_backend) && file_exists(SM_PATH . $prefs_backend)) {
415 require(SM_PATH . $prefs_backend);
416 } elseif (isset($prefs_dsn) && !empty($prefs_dsn)) {
417 require(SM_PATH . 'functions/db_prefs.php');
418 } else {
419 require(SM_PATH . 'functions/file_prefs.php');
420 }
421
422
423
424 /**
425 * DISABLED.
426 * Remove globalized session data in rg=on setups
427 *
428 * Code can be utilized when session is started, but data is not loaded.
429 * We have already loaded configuration and other important vars. Can't
430 * clean session globals here, beside, the cleanout of globals at the
431 * top of this file will have removed anything this code would find anyway.
432 if ((bool) @ini_get('register_globals') &&
433 strtolower(ini_get('register_globals'))!='off') {
434 foreach ($_SESSION as $key => $value) {
435 unset($GLOBALS[$key]);
436 }
437 }
438 */
439
440 sqsession_register(SM_BASE_URI,'base_uri');
441
442 /**
443 * Retrieve the language cookie
444 */
445 if (! sqgetGlobalVar('squirrelmail_language',$squirrelmail_language,SQ_COOKIE)) {
446 $squirrelmail_language = '';
447 }
448
449
450 /**
451 * Do something special for some pages. This is based on the PAGE_NAME constant
452 * set at the top of every page.
453 */
454 $set_up_langage_after_template_setup = FALSE;
455 switch (PAGE_NAME) {
456 case 'style':
457
458 // need to get the right template set up
459 //
460 sqGetGlobalVar('templateid', $templateid, SQ_GET);
461
462 // sanitize just in case...
463 //
464 $templateid = preg_replace('/(\.\.\/){1,}/', '', $templateid);
465
466 // make sure given template actually is available
467 //
468 $found_templateset = false;
469 for ($i = 0; $i < count($aTemplateSet); ++$i) {
470 if ($aTemplateSet[$i]['ID'] == $templateid) {
471 $found_templateset = true;
472 break;
473 }
474 }
475
476 // FIXME: do we need/want to check here for actual (physical) presence of template sets?
477 // selected template not available, fall back to default template
478 //
479 if (!$found_templateset) {
480 $sTemplateID = Template::get_default_template_set();
481 } else {
482 $sTemplateID = $templateid;
483 }
484
485 session_write_close();
486 break;
487
488 case 'mailto':
489 // nothing to do
490 break;
491
492 case 'redirect':
493 require(SM_PATH . 'functions/auth.php');
494 //nobreak;
495
496 case 'login':
497 require(SM_PATH . 'functions/display_messages.php' );
498 require(SM_PATH . 'functions/page_header.php');
499 require(SM_PATH . 'functions/html.php');
500
501 // reset template file cache
502 //
503 $sTemplateID = Template::get_default_template_set();
504 Template::cache_template_file_hierarchy($sTemplateID, TRUE);
505
506 /**
507 * Make sure icon variables are setup for the login page.
508 */
509 $icon_theme = $icon_themes[$icon_theme_def]['PATH'];
510 /*
511 * NOTE: The $icon_theme_path var should contain the path to the icon
512 * theme to use. If the admin has disabled icons, or the user has
513 * set the icon theme to "None," no icons will be used.
514 */
515 $icon_theme_path = (!$use_icons || $icon_theme=='none') ? NULL : ($icon_theme == 'template' ? SM_PATH . Template::calculate_template_images_directory($sTemplateID) : $icon_theme);
516
517 break;
518 default:
519 require(SM_PATH . 'functions/display_messages.php' );
520 require(SM_PATH . 'functions/page_header.php');
521 require(SM_PATH . 'functions/html.php');
522
523
524 /**
525 * Check if we are logged in
526 */
527 require(SM_PATH . 'functions/auth.php');
528
529 if ( !sqsession_is_registered('user_is_logged_in') ) {
530
531 // use $message to indicate what logout text the user
532 // will see... if 0, typical "You must be logged in"
533 // if 1, information that the user session was saved
534 // and will be resumed after (re)login
535 //
536 $message = 0;
537
538 // First we store some information in the new session to prevent
539 // information-loss.
540 //
541 $session_expired_post = $_POST;
542 $session_expired_location = PAGE_NAME;
543 if (!sqsession_is_registered('session_expired_post')) {
544 sqsession_register($session_expired_post,'session_expired_post');
545 }
546 if (!sqsession_is_registered('session_expired_location')) {
547 sqsession_register($session_expired_location,'session_expired_location');
548 if ($session_expired_location == 'compose')
549 $message = 1;
550 }
551 // signout page will deal with users who aren't logged
552 // in on its own; don't show error here
553 //
554 if ( PAGE_NAME == 'signout' ) {
555 return;
556 }
557
558 /**
559 * Initialize the template object (logout_error uses it)
560 */
561 /*
562 * $sTemplateID is not initialized when a user is not logged in, so we
563 * will use the config file defaults here. If the neccesary variables
564 * are not set, force a default value.
565 */
566 if (PAGE_NAME == 'squirrelmail_rpc') {
567 $sTemplateID = Template::get_rpc_template_set();
568 } else {
569 $sTemplateID = Template::get_default_template_set();
570 }
571 $oTemplate = Template::construct_template($sTemplateID);
572
573 set_up_language($squirrelmail_language, true);
574 if (!$message)
575 logout_error( _("You must be logged in to access this page.") );
576 else
577 logout_error( _("Your session has expired, but will be resumed after logging in again.") );
578 exit;
579 }
580
581 sqgetGlobalVar('authz',$authz,SQ_SESSION);
582
583 /**
584 * Setting the prefs backend
585 */
586 sqgetGlobalVar('prefs_cache', $prefs_cache, SQ_SESSION );
587 sqgetGlobalVar('prefs_are_cached', $prefs_are_cached, SQ_SESSION );
588
589 if ( !sqsession_is_registered('prefs_are_cached') ||
590 !isset( $prefs_cache) ||
591 !is_array( $prefs_cache)) {
592 $prefs_are_cached = false;
593 $prefs_cache = false; //array();
594 }
595
596 /**
597 * initializing user settings
598 */
599 require(SM_PATH . 'include/load_prefs.php');
600
601 /**
602 * We'll need this to later have a noframes version
603 *
604 * Check if the user has a language preference, but no cookie.
605 * Send him a cookie with his language preference, if there is
606 * such discrepancy.
607 */
608 $my_language = getPref($data_dir, $username, 'language');
609 if ($my_language != $squirrelmail_language) {
610 sqsetcookie('squirrelmail_language', $my_language, time()+2592000, $base_uri);
611 }
612
613 $set_up_langage_after_template_setup = TRUE;
614
615 $timeZone = getPref($data_dir, $username, 'timezone');
616
617 /* Check to see if we are allowed to set the TZ environment variable.
618 * We are able to do this if ...
619 * safe_mode is disabled OR
620 * safe_mode_allowed_env_vars is empty (you are allowed to set any) OR
621 * safe_mode_allowed_env_vars contains TZ
622 */
623 $tzChangeAllowed = (!ini_get('safe_mode')) ||
624 !strcmp(ini_get('safe_mode_allowed_env_vars'),'') ||
625 preg_match('/^([\w_]+,)*TZ/', ini_get('safe_mode_allowed_env_vars'));
626
627 if ( $timeZone != SMPREF_NONE && ($timeZone != "")
628 && $tzChangeAllowed ) {
629
630 // get time zone key, if strict or custom strict timezones are used
631 if (isset($time_zone_type) &&
632 ($time_zone_type == 1 || $time_zone_type == 3)) {
633 /* load time zone functions */
634 require(SM_PATH . 'include/timezones.php');
635 $realTimeZone = sq_get_tz_key($timeZone);
636 } else {
637 $realTimeZone = $timeZone;
638 }
639
640 // set time zone
641 if ($realTimeZone) {
642 putenv("TZ=".$realTimeZone);
643 }
644 }
645
646 /**
647 * php 5.1.0 added time zone functions. Set time zone with them in order
648 * to prevent E_STRICT notices and allow time zone modifications in safe_mode.
649 */
650 if (function_exists('date_default_timezone_set')) {
651 if ($timeZone != SMPREF_NONE && $timeZone != "") {
652 date_default_timezone_set($timeZone);
653 } else {
654 // interface runs on server's time zone. Remove php E_STRICT complains
655 $default_timezone = @date_default_timezone_get();
656 date_default_timezone_set($default_timezone);
657 }
658 }
659 break;
660 }
661
662 /*
663 * $sTemplateID is not initialized when a user is not logged in, so we
664 * will use the config file defaults here. If the neccesary variables
665 * are not set, force a default value.
666 *
667 * If the user is logged in, $sTemplateID will be set in load_prefs.php,
668 * so we shouldn't change it here.
669 */
670 if (!isset($sTemplateID)) {
671 if (PAGE_NAME == 'squirrelmail_rpc') {
672 $sTemplateID = Template::get_rpc_template_set();
673 } else {
674 $sTemplateID = Template::get_default_template_set();
675 }
676 $icon_theme_path = !$use_icons ? NULL : Template::calculate_template_images_directory($sTemplateID);
677 }
678
679 // template object may have already been constructed in load_prefs.php
680 //
681 if (empty($oTemplate)) {
682 $oTemplate = Template::construct_template($sTemplateID);
683 }
684
685 // We want some variables to always be available to the template
686 //
687 $oTemplate->assign('javascript_on',
688 (sqGetGlobalVar('user_is_logged_in', $user_is_logged_in, SQ_SESSION)
689 ? checkForJavascript() : 0));
690 $oTemplate->assign('base_uri', sqm_baseuri());
691 $always_include = array('sTemplateID', 'icon_theme_path');
692 foreach ($always_include as $var) {
693 $oTemplate->assign($var, (isset($$var) ? $$var : NULL));
694 }
695
696 // A few output elements are used often, so just get them once here
697 //
698 $nbsp = $oTemplate->fetch('non_breaking_space.tpl');
699 $br = $oTemplate->fetch('line_break.tpl');
700
701
702 /**
703 * Set up the language.
704 *
705 * This code block corresponds to the *default* block of the switch
706 * statement above, but the language cannot be set up until after the
707 * template is instantiated, so we set $set_up_langage_after_template_setup
708 * above and do the linguistic stuff now.
709 */
710 if ($set_up_langage_after_template_setup) {
711 $err=set_up_language(getPref($data_dir, $username, 'language'));
712
713 // Japanese translation used without mbstring support
714 if ($err==2) {
715 $sError = "<p>Your administrator needs to have PHP installed with the multibyte string extension enabled (using configure option --enable-mbstring).</p>\n"
716 . "<p>This system has assumed that you accidently switched to Japanese and has reverted your language preference to English.</p>\n"
717 . "<p>Please refresh this page in order to continue using your webmail.</p>\n";
718 error_box($sError);
719 }
720 }
721
722
723 /**
724 * Initialize our custom error handler object
725 */
726 $oErrorHandler = new ErrorHandler($oTemplate,'error_message.tpl');
727
728
729 /**
730 * Activate custom error handling
731 */
732 if (version_compare(PHP_VERSION, "4.3.0", ">=")) {
733 $oldErrorHandler = set_error_handler(array($oErrorHandler, 'SquirrelMailErrorhandler'));
734 } else {
735 $oldErrorHandler = set_error_handler('SquirrelMailErrorhandler');
736 }
737
738
739 // ============================================================================
740 // ================= End of Live Code, Beginning of Functions =================
741 // ============================================================================
742
743
744 /**
745 * Javascript support detection function
746 * @param boolean $reset recheck javascript support if set to true.
747 * @return integer SMPREF_JS_ON or SMPREF_JS_OFF ({@see include/constants.php})
748 * @since 1.5.1
749 */
750 function checkForJavascript($reset = FALSE) {
751 global $data_dir, $username, $javascript_on, $javascript_setting;
752
753 if ( !$reset && sqGetGlobalVar('javascript_on', $javascript_on, SQ_SESSION) )
754 return $javascript_on;
755
756 $user_is_logged_in = FALSE;
757 if ( $reset || !isset($javascript_setting) )
758 $javascript_setting = getPref($data_dir, $username, 'javascript_setting', SMPREF_JS_AUTODETECT);
759
760 if ( !sqGetGlobalVar('new_js_autodetect_results', $js_autodetect_results) &&
761 !sqGetGlobalVar('js_autodetect_results', $js_autodetect_results) )
762 $js_autodetect_results = SMPREF_JS_OFF;
763
764 if ( $javascript_setting == SMPREF_JS_AUTODETECT )
765 $javascript_on = $js_autodetect_results;
766 else
767 $javascript_on = $javascript_setting;
768
769 sqsession_register($javascript_on, 'javascript_on');
770 return $javascript_on;
771 }
772
773 function sqm_baseuri() {
774 global $base_uri;
775 return $base_uri;
776 }