4 * init.php -- initialisation file
6 * File should be loaded in every file in src/ or plugins that occupate an entire frame
8 * @copyright © 2006 The SquirrelMail Project Team
9 * @license http://opensource.org/licenses/gpl-license.php GNU Public License
11 * @package squirrelmail
15 * This is a development version so in order to track programmer mistakes we
16 * set the error reporting to E_ALL
18 error_reporting(E_ALL
);
22 * If register_globals are on, unregister globals.
23 * Second test covers boolean set as string (php_value register_globals off).
25 if ((bool) ini_get('register_globals') &&
26 strtolower(ini_get('register_globals'))!='off') {
28 * Remove all globals that are not reserved by PHP
29 * 'value' and 'key' are used by foreach. Don't unset them inside foreach.
31 foreach ($GLOBALS as $key => $value) {
33 case 'HTTP_POST_VARS':
37 case 'HTTP_COOKIE_VARS':
39 case 'HTTP_SERVER_VARS':
43 case 'HTTP_POST_FILES':
46 case 'HTTP_SESSION_VARS':
53 // FIXME: variable must be set only in src/login.php
56 unset($GLOBALS[$key]);
59 // Unset variables used in foreach
60 unset($GLOBALS['key']);
61 unset($GLOBALS['value']);
65 * [#1518885] session.use_cookies = off breaks SquirrelMail
67 * When session cookies are not used, all http redirects, meta refreshes,
68 * src/download.php and javascript URLs are broken. Setting must be set
69 * before session is started.
71 if (!(bool)ini_get('session.use_cookies') ||
72 ini_get('session.use_cookies') == 'off') {
73 ini_set('session.use_cookies','1');
77 * calculate SM_PATH and calculate the base_uri
78 * assumptions made: init.php is only called from plugins or from the src dir.
79 * files in the plugin directory may not be part of a subdirectory called "src"
82 if (isset($_SERVER['SCRIPT_NAME'])) {
83 $a = explode('/',$_SERVER['SCRIPT_NAME']);
84 } elseif (isset($HTTP_SERVER_VARS['SCRIPT_NAME'])) {
85 $a = explode('/',$HTTP_SERVER_VARS['SCRIPT_NAME']);
87 $error = 'Unable to detect script environment. '
88 .'Please test your PHP settings and send PHP core config, $_SERVER '
89 .'and $HTTP_SERVER_VARS to SquirrelMail developers.';
93 for($i = count($a) -2;$i > -1; --$i) {
95 if ($a[$i] === 'src' ||
$a[$i] === 'plugins') {
100 $base_uri = implode('/',array_slice($a,0,$i)). '/';
102 define('SM_PATH',$sSM_PATH);
103 define('SM_BASE_URI', $base_uri);
105 * global var $bInit is used to check if initialisation took place.
106 * At this moment it's a workarounf for the include of addrbook_search_html
107 * inside compose.php. If we found a better way then remove this. Do only use
108 * this var if you know for sure a page can be called stand alone and be included
114 * This theme as a failsafe if no themes were found, or if we error
115 * out before anything could be initialised.
118 $color[0] = '#DCDCDC'; /* light gray TitleBar */
119 $color[1] = '#800000'; /* red */
120 $color[2] = '#CC0000'; /* light red Warning/Error Messages */
121 $color[3] = '#A0B8C8'; /* green-blue Left Bar Background */
122 $color[4] = '#FFFFFF'; /* white Normal Background */
123 $color[5] = '#FFFFCC'; /* light yellow Table Headers */
124 $color[6] = '#000000'; /* black Text on left bar */
125 $color[7] = '#0000CC'; /* blue Links */
126 $color[8] = '#000000'; /* black Normal text */
127 $color[9] = '#ABABAB'; /* mid-gray Darker version of #0 */
128 $color[10] = '#666666'; /* dark gray Darker version of #9 */
129 $color[11] = '#770000'; /* dark red Special Folders color */
130 $color[12] = '#EDEDED';
131 $color[13] = '#800000'; /* (dark red) Color for quoted text -- > 1 quote */
132 $color[14] = '#ff0000'; /* (red) Color for quoted text -- >> 2 or more */
133 $color[15] = '#002266'; /* (dark blue) Unselectable folders */
134 $color[16] = '#ff9933'; /* (orange) Highlight color */
136 require(SM_PATH
. 'functions/global.php');
138 /* load default configuration */
139 require(SM_PATH
. 'config/config_default.php');
140 /* reset arrays in default configuration */
141 $ldap_server = array();
145 $theme[0]['PATH'] = SM_PATH
. 'themes/default_theme.php';
146 $theme[0]['NAME'] = 'Default';
147 $aTemplateSet = array();
148 $aTemplateSet[0]['PATH'] = SM_PATH
. 'templates/default/';
149 $aTemplateSet[0]['NAME'] = 'Default template';
150 /* load site configuration */
151 require(SM_PATH
. 'config/config.php');
152 /* load local configuration overrides */
153 if (file_exists(SM_PATH
. 'config/config_local.php')) {
154 require(SM_PATH
. 'config/config_local.php');
157 require(SM_PATH
. 'functions/plugin.php');
158 require(SM_PATH
. 'include/constants.php');
159 require(SM_PATH
. 'include/languages.php');
162 * If magic_quotes_runtime is on, SquirrelMail breaks in new and creative ways.
163 * Force magic_quotes_runtime off.
164 * tassium@squirrelmail.org - I put it here in the hopes that all SM code includes this.
165 * If there's a better place, please let me know.
167 ini_set('magic_quotes_runtime','0');
170 /* if running with magic_quotes_gpc then strip the slashes
171 from POST and GET global arrays */
172 if (get_magic_quotes_gpc()) {
173 sqstripslashes($_GET);
174 sqstripslashes($_POST);
178 /* strip any tags added to the url from PHP_SELF.
179 This fixes hand crafted url XXS expoits for any
180 page that uses PHP_SELF as the FORM action */
181 $_SERVER['PHP_SELF'] = strip_tags($_SERVER['PHP_SELF']);
183 $PHP_SELF = php_self();
186 * Initialize the session
189 /** set the name of the session cookie */
190 if (!isset($session_name) ||
!$session_name) {
191 $session_name = 'SQMSESSID';
195 * if session.auto_start is On then close the session
197 $sSessionAutostartName = session_name();
198 if ((isset($sSessionAutostartName) ||
$sSessionAutostartName == '') &&
199 $sSessionAutostartName !== $session_name) {
200 $sCookiePath = ini_get('session.cookie_path');
201 $sCookieDomain = ini_get('session.cookie_domain');
203 setcookie($sSessionAutostartName,'',time() - 604800,$sCookiePath,$sCookieDomain);
205 session_write_close();
209 * includes from classes stored in the session
211 require(SM_PATH
. 'class/mime.class.php');
213 ini_set('session.name' , $session_name);
214 session_set_cookie_params (0, $base_uri);
215 sqsession_is_active();
219 * Remove globalized session data in rg=on setups
221 * Code can be utilized when session is started, but data is not loaded.
222 * We have already loaded configuration and other important vars. Can't
223 * clean session globals here.
224 if ((bool) @ini_get('register_globals') &&
225 strtolower(ini_get('register_globals'))!='off') {
226 foreach ($_SESSION as $key => $value) {
227 unset($GLOBALS[$key]);
232 sqsession_register(SM_BASE_URI
,'base_uri');
235 * SquirrelMail version number -- DO NOT CHANGE
237 $version = '1.5.2 [CVS]';
240 * SquirrelMail internal version number -- DO NOT CHANGE
241 * $sm_internal_version = array (release, major, minor)
243 $SQM_INTERNAL_VERSION = array(1,5,2);
246 * Retrieve the language cookie
248 if (! sqgetGlobalVar('squirrelmail_language',$squirrelmail_language,SQ_COOKIE
)) {
249 $squirrelmail_language = '';
254 * @var $sInitlocation From where do we include.
256 if (!isset($sInitLocation)) {
261 * MAIN PLUGIN LOADING CODE HERE
265 * Include Compatibility plugin if available.
267 if (file_exists(SM_PATH
. 'plugins/compatibility/functions.php'))
268 include_once(SM_PATH
. 'plugins/compatibility/functions.php');
269 $squirrelmail_plugin_hooks = array();
271 /* On init, register all plugins configured for use. */
272 if (isset($plugins) && is_array($plugins)) {
273 // turn on output buffering in order to prevent output of new lines
275 foreach ($plugins as $name) {
278 // get output and remove whitespace
279 $output = trim(ob_get_contents());
281 // if plugins output more than newlines and spacing, stop script execution.
282 if (!empty($output)) {
288 switch ($sInitLocation) {
289 case 'style': session_write_close(); sqsetcookieflush(); break;
292 * directory hashing functions are needed for all setups in case
293 * plugins use own pref files.
295 require(SM_PATH
. 'functions/prefs.php');
296 /* hook loads custom prefs backend plugins */
297 $prefs_backend = do_hook_function('prefs_backend');
298 if (isset($prefs_backend) && !empty($prefs_backend) && file_exists(SM_PATH
. $prefs_backend)) {
299 require(SM_PATH
. $prefs_backend);
300 } elseif (isset($prefs_dsn) && !empty($prefs_dsn)) {
301 require(SM_PATH
. 'functions/db_prefs.php');
303 require(SM_PATH
. 'functions/file_prefs.php');
307 require(SM_PATH
. 'functions/display_messages.php' );
308 require(SM_PATH
. 'functions/page_header.php');
309 require(SM_PATH
. 'functions/html.php');
311 * cleanup old cookies with a cookie path the same as the standard php.ini
312 * cookie path. All previous SquirrelMail version used the standard php.ini
313 * cookie path for storing the session name. That behaviour changed.
315 if ($sCookiePath !== SM_BASE_URI
) {
317 * do not delete the standard sessions with session.name is i.e. PHPSESSID
318 * because they probably belong to other php apps
320 if (ini_get('session.name') !== $sSessionAutostartName) {
321 sqsetcookie(ini_get('session.name'),'',0,$sCookiePath);
326 require(SM_PATH
. 'functions/display_messages.php' );
327 require(SM_PATH
. 'functions/page_header.php');
328 require(SM_PATH
. 'functions/html.php');
329 require(SM_PATH
. 'functions/strings.php');
333 * Check if we are logged in
335 require(SM_PATH
. 'functions/auth.php');
337 if ( !sqsession_is_registered('user_is_logged_in') ) {
338 // First we store some information in the new session to prevent
341 $session_expired_post = $_POST;
342 $session_expired_location = $PHP_SELF;
343 if (!sqsession_is_registered('session_expired_post')) {
344 sqsession_register($session_expired_post,'session_expired_post');
346 if (!sqsession_is_registered('session_expired_location')) {
347 sqsession_register($session_expired_location,'session_expired_location');
349 // signout page will deal with users who aren't logged
350 // in on its own; don't show error here
352 if (strpos($PHP_SELF, 'signout.php') !== FALSE) {
357 * Initialize the template object (logout_error uses it)
359 require(SM_PATH
. 'class/template/template.class.php');
361 * $sTplDir is not initialized when a user is not logged in, so we will use
362 * the config file defaults here. If the neccesary variables are net set,
363 * force a default value.
365 $aTemplateSet = ( !isset($aTemplateSet) ?
array() : $aTemplateSet );
366 $templateset_default = ( !isset($templateset_default) ?
0 : $templateset_default );
368 $sTplDir = ( !isset($aTemplateSet[$templateset_default]['PATH']) ?
369 SM_PATH
. 'templates/default/' :
370 $aTemplateSet[$templateset_default]['PATH'] );
371 $oTemplate = new Template($sTplDir);
373 set_up_language($squirrelmail_language, true);
374 logout_error( _("You must be logged in to access this page.") );
378 sqgetGlobalVar('username',$username,SQ_SESSION
);
381 * Setting the prefs backend
383 sqgetGlobalVar('prefs_cache', $prefs_cache, SQ_SESSION
);
384 sqgetGlobalVar('prefs_are_cached', $prefs_are_cached, SQ_SESSION
);
386 if ( !sqsession_is_registered('prefs_are_cached') ||
387 !isset( $prefs_cache) ||
388 !is_array( $prefs_cache)) {
389 $prefs_are_cached = false;
390 $prefs_cache = false; //array();
393 /* see 'redirect' switch */
394 require(SM_PATH
. 'functions/prefs.php');
396 $prefs_backend = do_hook_function('prefs_backend');
397 if (isset($prefs_backend) && !empty($prefs_backend) && file_exists(SM_PATH
. $prefs_backend)) {
398 require(SM_PATH
. $prefs_backend);
399 } elseif (isset($prefs_dsn) && !empty($prefs_dsn)) {
400 require(SM_PATH
. 'functions/db_prefs.php');
402 require(SM_PATH
. 'functions/file_prefs.php');
406 * initializing user settings
408 require(SM_PATH
. 'include/load_prefs.php');
410 // i do not understand the frames language cookie story
412 * We'll need this to later have a noframes version
414 * Check if the user has a language preference, but no cookie.
415 * Send him a cookie with his language preference, if there is
418 $my_language = getPref($data_dir, $username, 'language');
419 if ($my_language != $squirrelmail_language) {
420 sqsetcookie('squirrelmail_language', $my_language, time()+
2592000, $base_uri);
425 * Set up the language.
427 $err=set_up_language(getPref($data_dir, $username, 'language'));
428 /* this is the last cookie we set so flush it. */
431 // Japanese translation used without mbstring support
434 "<p>You need to have PHP installed with the multibyte string function \n".
435 "enabled (using configure option --enable-mbstring).</p>\n".
436 "<p>System assumed that you accidently switched to Japanese translation \n".
437 "and reverted your language preference to English.</p>\n".
438 "<p>Please refresh this page in order to use webmail.</p>\n";
442 $timeZone = getPref($data_dir, $username, 'timezone');
444 /* Check to see if we are allowed to set the TZ environment variable.
445 * We are able to do this if ...
446 * safe_mode is disabled OR
447 * safe_mode_allowed_env_vars is empty (you are allowed to set any) OR
448 * safe_mode_allowed_env_vars contains TZ
450 $tzChangeAllowed = (!ini_get('safe_mode')) ||
451 !strcmp(ini_get('safe_mode_allowed_env_vars'),'') ||
452 preg_match('/^([\w_]+,)*TZ/', ini_get('safe_mode_allowed_env_vars'));
454 if ( $timeZone != SMPREF_NONE
&& ($timeZone != "")
455 && $tzChangeAllowed ) {
457 // get time zone key, if strict or custom strict timezones are used
458 if (isset($time_zone_type) &&
459 ($time_zone_type == 1 ||
$time_zone_type == 3)) {
460 /* load time zone functions */
461 require(SM_PATH
. 'include/timezones.php');
462 $realTimeZone = sq_get_tz_key($timeZone);
464 $realTimeZone = $timeZone;
469 putenv("TZ=".$realTimeZone);
474 * php 5.1.0 added time zone functions. Set time zone with them in order
475 * to prevent E_STRICT notices and allow time zone modifications in safe_mode.
477 if (function_exists('date_default_timezone_set')) {
478 if ($timeZone != SMPREF_NONE
&& $timeZone != "") {
479 date_default_timezone_set($timeZone);
481 // interface runs on server's time zone. Remove php E_STRICT complains
482 $default_timezone = @date_default_timezone_get
();
483 date_default_timezone_set($default_timezone);
490 * Initialize the template object
492 require(SM_PATH
. 'class/template/template.class.php');
495 * $sTplDir is not initialized when a user is not logged in, so we will use
496 * the config file defaults here. If the neccesary variables are net set,
497 * force a default value.
499 * If the user is logged in, $sTplDir will be set in load_prefs.php, so we
500 * shouldn't change it here.
502 if (!isset($sTplDir)) {
503 $aTemplateSet = ( !isset($aTemplateSet) ?
array() : $aTemplateSet );
504 $templateset_default = ( !isset($templateset_default) ?
0 : $templateset_default );
506 $sTplDir = ( !isset($aTemplateSet[$templateset_default]['PATH']) ?
507 SM_PATH
. 'templates/default/' :
508 $aTemplateSet[$templateset_default]['PATH'] );
510 $oTemplate = new Template($sTplDir);
513 * Initialize our custom error handler object
515 require(SM_PATH
. 'class/error.class.php');
516 $oErrorHandler = new ErrorHandler($oTemplate,'error_message.tpl');
519 * Activate custom error handling
521 if (version_compare(PHP_VERSION
, "4.3.0", ">=")) {
522 $oldErrorHandler = set_error_handler(array($oErrorHandler, 'SquirrelMailErrorhandler'));
524 $oldErrorHandler = set_error_handler('SquirrelMailErrorhandler');
528 * Javascript support detection function
529 * @param boolean $reset recheck javascript support if set to true.
530 * @return integer SMPREF_JS_ON or SMPREF_JS_OFF ({@see include/constants.php})
533 function checkForJavascript($reset = FALSE) {
534 global $data_dir, $username, $javascript_on, $javascript_setting;
536 if ( !$reset && sqGetGlobalVar('javascript_on', $javascript_on, SQ_SESSION
) )
537 return $javascript_on;
539 if ( $reset ||
!isset($javascript_setting) )
540 $javascript_setting = getPref($data_dir, $username, 'javascript_setting', SMPREF_JS_AUTODETECT
);
542 if ( !sqGetGlobalVar('new_js_autodetect_results', $js_autodetect_results) &&
543 !sqGetGlobalVar('js_autodetect_results', $js_autodetect_results) )
544 $js_autodetect_results = SMPREF_JS_OFF
;
546 if ( $javascript_setting == SMPREF_JS_AUTODETECT
)
547 $javascript_on = $js_autodetect_results;
549 $javascript_on = $javascript_setting;
551 sqsession_register($javascript_on, 'javascript_on');
552 return $javascript_on;
555 function sqm_baseuri() {