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');
137 require(SM_PATH
. 'functions/arrays.php');
139 /* load default configuration */
140 require(SM_PATH
. 'config/config_default.php');
141 /* reset arrays in default configuration */
142 $ldap_server = array();
145 $aTemplateSet = array();
146 $aTemplateSet[0]['ID'] = 'default';
147 $aTemplateSet[0]['NAME'] = 'Default';
149 /* load site configuration */
150 require(SM_PATH
. 'config/config.php');
151 /* load local configuration overrides */
152 if (file_exists(SM_PATH
. 'config/config_local.php')) {
153 require(SM_PATH
. 'config/config_local.php');
156 require(SM_PATH
. 'functions/plugin.php');
157 require(SM_PATH
. 'include/constants.php');
158 require(SM_PATH
. 'include/languages.php');
159 require(SM_PATH
. 'class/template/Template.class.php');
160 require(SM_PATH
. 'class/error.class.php');
163 * If magic_quotes_runtime is on, SquirrelMail breaks in new and creative ways.
164 * Force magic_quotes_runtime off.
165 * tassium@squirrelmail.org - I put it here in the hopes that all SM code includes this.
166 * If there's a better place, please let me know.
168 ini_set('magic_quotes_runtime','0');
171 /* if running with magic_quotes_gpc then strip the slashes
172 from POST and GET global arrays */
173 if (get_magic_quotes_gpc()) {
174 sqstripslashes($_GET);
175 sqstripslashes($_POST);
179 /* strip any tags added to the url from PHP_SELF.
180 This fixes hand crafted url XXS expoits for any
181 page that uses PHP_SELF as the FORM action */
182 $_SERVER['PHP_SELF'] = strip_tags($_SERVER['PHP_SELF']);
184 $PHP_SELF = php_self();
187 * Initialize the session
190 /** set the name of the session cookie */
191 if (!isset($session_name) ||
!$session_name) {
192 $session_name = 'SQMSESSID';
196 * if session.auto_start is On then close the session
198 $sSessionAutostartName = session_name();
199 if ((isset($sSessionAutostartName) ||
$sSessionAutostartName == '') &&
200 $sSessionAutostartName !== $session_name) {
201 $sCookiePath = ini_get('session.cookie_path');
202 $sCookieDomain = ini_get('session.cookie_domain');
204 setcookie($sSessionAutostartName,'',time() - 604800,$sCookiePath,$sCookieDomain);
206 session_write_close();
210 * includes from classes stored in the session
212 require(SM_PATH
. 'class/mime.class.php');
214 ini_set('session.name' , $session_name);
215 session_set_cookie_params (0, $base_uri);
216 sqsession_is_active();
219 * SquirrelMail version number -- DO NOT CHANGE
221 $version = '1.5.2 [CVS]';
224 * SquirrelMail internal version number -- DO NOT CHANGE
225 * $sm_internal_version = array (release, major, minor)
227 $SQM_INTERNAL_VERSION = array(1,5,2);
230 * Include Compatibility plugin if available.
232 if (file_exists(SM_PATH
. 'plugins/compatibility/functions.php'))
233 include_once(SM_PATH
. 'plugins/compatibility/functions.php');
236 * MAIN PLUGIN LOADING CODE HERE
237 * On init, we no longer need to load all plugin setup files.
238 * Now, we load the statically generated hook registrations here
239 * and let the hook calls include only the plugins needed.
241 $squirrelmail_plugin_hooks = array();
242 if (file_exists(SM_PATH
. 'config/plugin_hooks.php')) {
243 require(SM_PATH
. 'config/plugin_hooks.php');
247 * allow plugins to override main configuration; hook is placed
248 * here to allow plugins to use session information to do their work
250 do_hook('config_override');
254 * Remove globalized session data in rg=on setups
256 * Code can be utilized when session is started, but data is not loaded.
257 * We have already loaded configuration and other important vars. Can't
258 * clean session globals here.
259 if ((bool) @ini_get('register_globals') &&
260 strtolower(ini_get('register_globals'))!='off') {
261 foreach ($_SESSION as $key => $value) {
262 unset($GLOBALS[$key]);
267 sqsession_register(SM_BASE_URI
,'base_uri');
270 * Retrieve the language cookie
272 if (! sqgetGlobalVar('squirrelmail_language',$squirrelmail_language,SQ_COOKIE
)) {
273 $squirrelmail_language = '';
278 * @var $sInitlocation From where do we include.
280 if (!isset($sInitLocation)) {
285 * Before 1.5.2 version hook was part of functions/constants.php.
286 * After init layout changes, hook had to be moved because include/constants.php is
287 * loaded before plugins are initialized.
290 do_hook('loading_constants');
292 switch ($sInitLocation) {
295 // need to get the right template set up
297 sqGetGlobalVar('templateid', $templateid, SQ_GET
);
299 // sanitize just in case...
301 $templateid = preg_replace('/(\.\.\/){1,}/', '', $templateid);
303 // make sure given template actually is available
305 $found_templateset = false;
306 for ($i = 0; $i < count($aTemplateSet); ++
$i) {
307 if ($aTemplateSet[$i]['ID'] == $templateid) {
308 $found_templateset = true;
313 // FIXME: do we need/want to check here for actual (physical) presence of template sets?
314 // selected template not available, fall back to default template
316 if (!$found_templateset) {
317 $sTemplateID = Template
::get_default_template_set();
319 $sTemplateID = $templateid;
322 session_write_close();
328 * directory hashing functions are needed for all setups in case
329 * plugins use own pref files.
331 require(SM_PATH
. 'functions/prefs.php');
332 require(SM_PATH
. 'functions/auth.php');
333 /* hook loads custom prefs backend plugins */
334 $prefs_backend = do_hook_function('prefs_backend');
335 if (isset($prefs_backend) && !empty($prefs_backend) && file_exists(SM_PATH
. $prefs_backend)) {
336 require(SM_PATH
. $prefs_backend);
337 } elseif (isset($prefs_dsn) && !empty($prefs_dsn)) {
338 require(SM_PATH
. 'functions/db_prefs.php');
340 require(SM_PATH
. 'functions/file_prefs.php');
344 require(SM_PATH
. 'functions/display_messages.php' );
345 require(SM_PATH
. 'functions/page_header.php');
346 require(SM_PATH
. 'functions/html.php');
348 // reset template file cache
350 $sTemplateID = Template
::get_default_template_set();
351 Template
::cache_template_file_hierarchy(TRUE);
354 * Make sure icon variables are setup for the login page.
356 $icon_theme = $icon_themes[$icon_theme_def]['PATH'];
358 * NOTE: The $icon_theme_path var should contain the path to the icon
359 * theme to use. If the admin has disabled icons, or the user has
360 * set the icon theme to "None," no icons will be used.
362 $icon_theme_path = (!$use_icons ||
$icon_theme=='none') ?
NULL : ($icon_theme == 'template' ? SM_PATH
. Template
::calculate_template_images_directory($sTemplateID) : $icon_theme);
365 * cleanup old cookies with a cookie path the same as the standard php.ini
366 * cookie path. All previous SquirrelMail version used the standard php.ini
367 * cookie path for storing the session name. That behaviour changed.
369 if ($sCookiePath !== SM_BASE_URI
) {
371 * do not delete the standard sessions with session.name is i.e. PHPSESSID
372 * because they probably belong to other php apps
374 if (ini_get('session.name') !== $sSessionAutostartName) {
375 sqsetcookie(ini_get('session.name'),'',0,$sCookiePath);
380 require(SM_PATH
. 'functions/display_messages.php' );
381 require(SM_PATH
. 'functions/page_header.php');
382 require(SM_PATH
. 'functions/html.php');
383 require(SM_PATH
. 'functions/strings.php');
387 * Check if we are logged in
389 require(SM_PATH
. 'functions/auth.php');
391 if ( !sqsession_is_registered('user_is_logged_in') ) {
392 // First we store some information in the new session to prevent
395 $session_expired_post = $_POST;
396 $session_expired_location = $PHP_SELF;
397 if (!sqsession_is_registered('session_expired_post')) {
398 sqsession_register($session_expired_post,'session_expired_post');
400 if (!sqsession_is_registered('session_expired_location')) {
401 sqsession_register($session_expired_location,'session_expired_location');
403 // signout page will deal with users who aren't logged
404 // in on its own; don't show error here
406 if (strpos($PHP_SELF, 'signout.php') !== FALSE) {
411 * Initialize the template object (logout_error uses it)
414 * $sTemplateID is not initialized when a user is not logged in, so we
415 * will use the config file defaults here. If the neccesary variables
416 * are net set, force a default value.
418 $sTemplateID = Template
::get_default_template_set();
419 $oTemplate = Template
::construct_template($sTemplateID);
421 set_up_language($squirrelmail_language, true);
422 logout_error( _("You must be logged in to access this page.") );
426 sqgetGlobalVar('username',$username,SQ_SESSION
);
427 sqgetGlobalVar('authz',$authz,SQ_SESSION
);
430 * Setting the prefs backend
432 sqgetGlobalVar('prefs_cache', $prefs_cache, SQ_SESSION
);
433 sqgetGlobalVar('prefs_are_cached', $prefs_are_cached, SQ_SESSION
);
435 if ( !sqsession_is_registered('prefs_are_cached') ||
436 !isset( $prefs_cache) ||
437 !is_array( $prefs_cache)) {
438 $prefs_are_cached = false;
439 $prefs_cache = false; //array();
442 /* see 'redirect' case */
443 require(SM_PATH
. 'functions/prefs.php');
445 $prefs_backend = do_hook_function('prefs_backend');
446 if (isset($prefs_backend) && !empty($prefs_backend) && file_exists(SM_PATH
. $prefs_backend)) {
447 require(SM_PATH
. $prefs_backend);
448 } elseif (isset($prefs_dsn) && !empty($prefs_dsn)) {
449 require(SM_PATH
. 'functions/db_prefs.php');
451 require(SM_PATH
. 'functions/file_prefs.php');
455 * initializing user settings
457 require(SM_PATH
. 'include/load_prefs.php');
459 // i do not understand the frames language cookie story
461 * We'll need this to later have a noframes version
463 * Check if the user has a language preference, but no cookie.
464 * Send him a cookie with his language preference, if there is
467 $my_language = getPref($data_dir, $username, 'language');
468 if ($my_language != $squirrelmail_language) {
469 sqsetcookie('squirrelmail_language', $my_language, time()+
2592000, $base_uri);
474 * Set up the language.
476 $err=set_up_language(getPref($data_dir, $username, 'language'));
477 /* this is the last cookie we set so flush it. */
480 // Japanese translation used without mbstring support
483 "<p>You need to have PHP installed with the multibyte string function \n".
484 "enabled (using configure option --enable-mbstring).</p>\n".
485 "<p>System assumed that you accidently switched to Japanese translation \n".
486 "and reverted your language preference to English.</p>\n".
487 "<p>Please refresh this page in order to use webmail.</p>\n";
491 $timeZone = getPref($data_dir, $username, 'timezone');
493 /* Check to see if we are allowed to set the TZ environment variable.
494 * We are able to do this if ...
495 * safe_mode is disabled OR
496 * safe_mode_allowed_env_vars is empty (you are allowed to set any) OR
497 * safe_mode_allowed_env_vars contains TZ
499 $tzChangeAllowed = (!ini_get('safe_mode')) ||
500 !strcmp(ini_get('safe_mode_allowed_env_vars'),'') ||
501 preg_match('/^([\w_]+,)*TZ/', ini_get('safe_mode_allowed_env_vars'));
503 if ( $timeZone != SMPREF_NONE
&& ($timeZone != "")
504 && $tzChangeAllowed ) {
506 // get time zone key, if strict or custom strict timezones are used
507 if (isset($time_zone_type) &&
508 ($time_zone_type == 1 ||
$time_zone_type == 3)) {
509 /* load time zone functions */
510 require(SM_PATH
. 'include/timezones.php');
511 $realTimeZone = sq_get_tz_key($timeZone);
513 $realTimeZone = $timeZone;
518 putenv("TZ=".$realTimeZone);
523 * php 5.1.0 added time zone functions. Set time zone with them in order
524 * to prevent E_STRICT notices and allow time zone modifications in safe_mode.
526 if (function_exists('date_default_timezone_set')) {
527 if ($timeZone != SMPREF_NONE
&& $timeZone != "") {
528 date_default_timezone_set($timeZone);
530 // interface runs on server's time zone. Remove php E_STRICT complains
531 $default_timezone = @date_default_timezone_get
();
532 date_default_timezone_set($default_timezone);
539 * $sTemplateID is not initialized when a user is not logged in, so we
540 * will use the config file defaults here. If the neccesary variables
541 * are not set, force a default value.
543 * If the user is logged in, $sTemplateID will be set in load_prefs.php,
544 * so we shouldn't change it here.
546 if (!isset($sTemplateID)) {
547 $sTemplateID = Template
::get_default_template_set();
548 $icon_theme_path = !$use_icons ?
NULL : Template
::calculate_template_images_directory($sTemplateID);
551 // template object may have already been constructed in load_prefs.php
553 if (empty($oTemplate)) {
554 $oTemplate = Template
::construct_template($sTemplateID);
557 // We want some variables to always be available to the template
558 $always_include = array('sTemplateID', 'icon_theme_path', 'javascript_on');
559 foreach ($always_include as $var) {
560 $oTemplate->assign($var, (isset($
$var) ? $
$var : NULL));
564 * Initialize our custom error handler object
566 $oErrorHandler = new ErrorHandler($oTemplate,'error_message.tpl');
569 * Activate custom error handling
571 if (version_compare(PHP_VERSION
, "4.3.0", ">=")) {
572 $oldErrorHandler = set_error_handler(array($oErrorHandler, 'SquirrelMailErrorhandler'));
574 $oldErrorHandler = set_error_handler('SquirrelMailErrorhandler');
578 * Javascript support detection function
579 * @param boolean $reset recheck javascript support if set to true.
580 * @return integer SMPREF_JS_ON or SMPREF_JS_OFF ({@see include/constants.php})
583 function checkForJavascript($reset = FALSE) {
584 global $data_dir, $username, $javascript_on, $javascript_setting;
586 if ( !$reset && sqGetGlobalVar('javascript_on', $javascript_on, SQ_SESSION
) )
587 return $javascript_on;
589 if ( $reset ||
!isset($javascript_setting) )
590 $javascript_setting = getPref($data_dir, $username, 'javascript_setting', SMPREF_JS_AUTODETECT
);
592 if ( !sqGetGlobalVar('new_js_autodetect_results', $js_autodetect_results) &&
593 !sqGetGlobalVar('js_autodetect_results', $js_autodetect_results) )
594 $js_autodetect_results = SMPREF_JS_OFF
;
596 if ( $javascript_setting == SMPREF_JS_AUTODETECT
)
597 $javascript_on = $js_autodetect_results;
599 $javascript_on = $javascript_setting;
601 sqsession_register($javascript_on, 'javascript_on');
602 return $javascript_on;
605 function sqm_baseuri() {