202bcbcc |
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 © 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 | * SquirrelMail version number -- DO NOT CHANGE |
16 | */ |
17 | |
18 | $version = '1.5.2 [CVS]'; |
19 | |
20 | /** |
21 | * SquirrelMail internal version number -- DO NOT CHANGE |
22 | * $sm_internal_version = array (release, major, minor) |
23 | */ |
24 | |
25 | $SQM_INTERNAL_VERSION = array(1,5,2); |
26 | |
27 | /** |
28 | * This is a development version so in order to track programmer mistakes we |
29 | * set the error reporting to E_ALL |
30 | */ |
31 | |
32 | error_reporting(E_ALL); |
33 | |
34 | |
35 | /** |
36 | * calculate SM_PATH and calculate the base_uri |
37 | * assumptions made: init.php is only called from plugins or from the src dir. |
38 | * files in the plugin directory may not be part of a subdirectory called "src" |
39 | * |
40 | */ |
41 | if (isset($_SERVER['SCRIPT_NAME'])) { |
42 | $a = explode('/',$_SERVER['SCRIPT_NAME']); |
43 | } elseif (isset($HTTP_SERVER_VARS['SCRIPT_NAME'])) { |
44 | $a = explode('/',$_SERVER['SCRIPT_NAME']); |
45 | } |
46 | $sSM_PATH = ''; |
47 | for($i = count($a) -2;$i > -1; --$i) { |
48 | $sSM_PATH .= '../'; |
49 | if ($a[$i] === 'src' || $a[$i] === 'plugins') { |
50 | break; |
51 | } |
52 | } |
53 | |
54 | $base_uri = implode('/',array_slice($a,0,$i)). '/'; |
55 | |
56 | |
57 | |
58 | define('SM_PATH',$sSM_PATH); |
59 | |
60 | /** |
61 | * global var $bInit is used to check if initialisation took place. |
62 | * At this moment it's a workarounf for the include of addrbook_search_html |
63 | * inside compose.php. If we found a better way then remove this. Do only use |
64 | * this var if you know for sure a page can be called stand alone and be included |
65 | * in another file. |
66 | */ |
67 | $bInit = true; |
68 | |
69 | require(SM_PATH . 'functions/global.php'); |
70 | require(SM_PATH . 'config/config.php'); |
71 | require(SM_PATH . 'functions/plugin.php'); |
72 | require(SM_PATH . 'include/constants.php'); |
73 | require(SM_PATH . 'include/languages.php'); |
74 | |
75 | /** |
76 | * If magic_quotes_runtime is on, SquirrelMail breaks in new and creative ways. |
77 | * Force magic_quotes_runtime off. |
78 | * tassium@squirrelmail.org - I put it here in the hopes that all SM code includes this. |
79 | * If there's a better place, please let me know. |
80 | */ |
81 | ini_set('magic_quotes_runtime','0'); |
82 | |
83 | |
84 | /* if running with magic_quotes_gpc then strip the slashes |
85 | from POST and GET global arrays */ |
86 | if (get_magic_quotes_gpc()) { |
87 | sqstripslashes($_GET); |
88 | sqstripslashes($_POST); |
89 | } |
90 | |
91 | /** |
92 | * If register_globals are on, unregister globals. |
93 | * Code requires PHP 4.1.0 or newer. |
94 | */ |
95 | if ((bool) @ini_get('register_globals')) { |
96 | /** |
97 | * Remove all globals from $_GET, $_POST, and $_COOKIE. |
98 | */ |
99 | foreach ($_REQUEST as $key => $value) { |
100 | unset($GLOBALS[$key]); |
101 | } |
102 | /** |
103 | * Remove globalized $_FILES variables |
104 | * Before 4.3.0 $_FILES are included in $_REQUEST. |
105 | * Unglobalize them in separate call in order to remove dependency |
106 | * on PHP version. |
107 | */ |
108 | foreach ($_FILES as $key => $value) { |
109 | unset($GLOBALS[$key]); |
110 | // there are three undocumented $_FILES globals. |
111 | unset($GLOBALS[$key.'_type']); |
112 | unset($GLOBALS[$key.'_name']); |
113 | unset($GLOBALS[$key.'_size']); |
114 | } |
115 | /** |
116 | * Remove globalized environment variables. |
117 | */ |
118 | foreach ($_ENV as $key => $value) { |
119 | unset($GLOBALS[$key]); |
120 | } |
121 | /** |
122 | * Remove globalized server variables. |
123 | */ |
124 | foreach ($_SERVER as $key => $value) { |
125 | unset($GLOBALS[$key]); |
126 | } |
127 | } |
128 | |
129 | /* strip any tags added to the url from PHP_SELF. |
130 | This fixes hand crafted url XXS expoits for any |
131 | page that uses PHP_SELF as the FORM action */ |
132 | $_SERVER['PHP_SELF'] = strip_tags($_SERVER['PHP_SELF']); |
133 | |
134 | $PHP_SELF = php_self(); |
135 | |
136 | /** |
137 | * Initialize the session |
138 | */ |
139 | |
140 | /** |
141 | * includes from classes stored in the session |
142 | */ |
143 | require(SM_PATH . 'class/mime.class.php'); |
144 | |
145 | /** set the name of the session cookie */ |
146 | if (!isset($session_name) || !$session_name) { |
147 | $session_name = 'SQMSESSID'; |
148 | } |
149 | ini_set('session.name' , $session_name); |
150 | session_set_cookie_params (0, $base_uri); |
151 | sqsession_is_active(); |
152 | |
153 | sqsession_register($base_uri, 'base_uri'); |
154 | |
155 | /** |
156 | * Remove globalized session data in rg=on setups |
157 | */ |
158 | if ((bool) @ini_get('register_globals')) { |
159 | foreach ($_SESSION as $key => $value) { |
160 | unset($GLOBALS[$key]); |
161 | } |
162 | } |
163 | /** |
164 | * Retrieve the language cookie |
165 | */ |
166 | if (! sqgetGlobalVar('squirrelmail_language',$squirrelmail_language,SQ_COOKIE)) { |
167 | $squirrelmail_language = ''; |
168 | } |
169 | |
170 | |
171 | /** |
172 | * @var $sInitlocation From where do we include. |
173 | */ |
174 | if (!isset($sInitLocation)) { |
175 | $sInitLocation=NULL; |
176 | } |
177 | |
178 | /** |
179 | * MAIN PLUGIN LOADING CODE HERE |
180 | */ |
181 | |
182 | /** |
183 | * Include Compatibility plugin if available. |
184 | */ |
185 | if (file_exists(SM_PATH . 'plugins/compatibility/functions.php')) |
186 | include_once(SM_PATH . 'plugins/compatibility/functions.php'); |
187 | $squirrelmail_plugin_hooks = array(); |
188 | |
189 | /* On init, register all plugins configured for use. */ |
190 | if (isset($plugins) && is_array($plugins)) { |
191 | // turn on output buffering in order to prevent output of new lines |
192 | ob_start(); |
193 | foreach ($plugins as $name) { |
194 | use_plugin($name); |
195 | } |
196 | // get output and remove whitespace |
197 | $output = trim(ob_get_contents()); |
198 | ob_end_clean(); |
199 | // if plugins output more than newlines and spacing, stop script execution. |
200 | if (!empty($output)) { |
201 | die($output); |
202 | } |
203 | } |
204 | |
205 | |
206 | switch ($sInitLocation) { |
207 | case 'style': session_write_close(); sqsetcookieflush(); break; |
208 | case 'redirect': |
209 | $prefs_backend = do_hook_function('prefs_backend'); |
210 | if (isset($prefs_backend) && !empty($prefs_backend) && file_exists(SM_PATH . $prefs_backend)) { |
211 | require(SM_PATH . $prefs_backend); |
212 | } elseif (isset($prefs_dsn) && !empty($prefs_dsn)) { |
213 | require(SM_PATH . 'functions/db_prefs.php'); |
214 | } else { |
215 | require(SM_PATH . 'functions/prefs.php'); |
216 | require(SM_PATH . 'functions/file_prefs.php'); |
217 | } |
218 | //nobreak; |
219 | case 'login': |
220 | require(SM_PATH . 'functions/display_messages.php' ); |
221 | require(SM_PATH . 'functions/page_header.php'); |
222 | require(SM_PATH . 'functions/html.php'); |
223 | break; |
224 | default: |
225 | require(SM_PATH . 'functions/display_messages.php' ); |
226 | require(SM_PATH . 'functions/page_header.php'); |
227 | require(SM_PATH . 'functions/html.php'); |
228 | require(SM_PATH . 'functions/strings.php'); |
229 | |
230 | |
231 | /** |
232 | * Check if we are logged in |
233 | */ |
234 | require(SM_PATH . 'functions/auth.php'); |
235 | |
236 | if ( !sqsession_is_registered('user_is_logged_in') ) { |
237 | // First we store some information in the new session to prevent |
238 | // information-loss. |
239 | // |
240 | $session_expired_post = $_POST; |
241 | $session_expired_location = $PHP_SELF; |
242 | if (!sqsession_is_registered('session_expired_post')) { |
243 | sqsession_register($session_expired_post,'session_expired_post'); |
244 | } |
245 | if (!sqsession_is_registered('session_expired_location')) { |
246 | sqsession_register($session_expired_location,'session_expired_location'); |
247 | } |
248 | // signout page will deal with users who aren't logged |
249 | // in on its own; don't show error here |
250 | // |
251 | if (strpos($PHP_SELF, 'signout.php') !== FALSE) { |
252 | return; |
253 | } |
254 | |
255 | set_up_language($squirrelmail_language, true); |
256 | logout_error( _("You must be logged in to access this page.") ); |
257 | exit; |
258 | } |
259 | |
260 | sqgetGlobalVar('username',$username,SQ_SESSION); |
261 | |
262 | /** |
263 | * Setting the prefs backend |
264 | */ |
265 | sqgetGlobalVar('prefs_cache', $prefs_cache, SQ_SESSION ); |
266 | sqgetGlobalVar('prefs_are_cached', $prefs_are_cached, SQ_SESSION ); |
267 | |
268 | if ( !sqsession_is_registered('prefs_are_cached') || |
269 | !isset( $prefs_cache) || |
270 | !is_array( $prefs_cache)) { |
271 | $prefs_are_cached = false; |
272 | $prefs_cache = false; //array(); |
273 | } |
274 | |
275 | $prefs_backend = do_hook_function('prefs_backend'); |
276 | if (isset($prefs_backend) && !empty($prefs_backend) && file_exists(SM_PATH . $prefs_backend)) { |
277 | require(SM_PATH . $prefs_backend); |
278 | } elseif (isset($prefs_dsn) && !empty($prefs_dsn)) { |
279 | require(SM_PATH . 'functions/db_prefs.php'); |
280 | } else { |
281 | require(SM_PATH . 'functions/prefs.php'); |
282 | require(SM_PATH . 'functions/file_prefs.php'); |
283 | } |
284 | |
285 | /** |
286 | * initializing user settings |
287 | */ |
288 | require(SM_PATH . 'include/load_prefs.php'); |
289 | |
290 | |
291 | // i do not understand the frames language cookie story |
292 | /** |
293 | * We'll need this to later have a noframes version |
294 | * |
295 | * Check if the user has a language preference, but no cookie. |
296 | * Send him a cookie with his language preference, if there is |
297 | * such discrepancy. |
298 | */ |
299 | $my_language = getPref($data_dir, $username, 'language'); |
300 | if ($my_language != $squirrelmail_language) { |
301 | sqsetcookie('squirrelmail_language', $my_language, time()+2592000, $base_uri); |
302 | } |
303 | // /dont understand |
304 | |
305 | /** |
306 | * Set up the language. |
307 | */ |
308 | $err=set_up_language(getPref($data_dir, $username, 'language')); |
309 | /* this is the last cookie we set so flush it. */ |
310 | sqsetcookieflush(); |
311 | |
312 | // Japanese translation used without mbstring support |
313 | if ($err==2) { |
314 | $sError = |
315 | "<p>You need to have PHP installed with the multibyte string function \n". |
316 | "enabled (using configure option --enable-mbstring).</p>\n". |
317 | "<p>System assumed that you accidently switched to Japanese translation \n". |
318 | "and reverted your language preference to English.</p>\n". |
319 | "<p>Please refresh this page in order to use webmail.</p>\n"; |
320 | error_box($sError); |
321 | } |
322 | |
323 | $timeZone = getPref($data_dir, $username, 'timezone'); |
324 | |
325 | /* Check to see if we are allowed to set the TZ environment variable. |
326 | * We are able to do this if ... |
327 | * safe_mode is disabled OR |
328 | * safe_mode_allowed_env_vars is empty (you are allowed to set any) OR |
329 | * safe_mode_allowed_env_vars contains TZ |
330 | */ |
331 | $tzChangeAllowed = (!ini_get('safe_mode')) || |
332 | !strcmp(ini_get('safe_mode_allowed_env_vars'),'') || |
333 | preg_match('/^([\w_]+,)*TZ/', ini_get('safe_mode_allowed_env_vars')); |
334 | |
335 | if ( $timeZone != SMPREF_NONE && ($timeZone != "") |
336 | && $tzChangeAllowed ) { |
337 | |
338 | // get time zone key, if strict or custom strict timezones are used |
339 | if (isset($time_zone_type) && |
340 | ($time_zone_type == 1 || $time_zone_type == 3)) { |
341 | /* load time zone functions */ |
342 | require(SM_PATH . 'include/timezones.php'); |
343 | $realTimeZone = sq_get_tz_key($timeZone); |
344 | } else { |
345 | $realTimeZone = $timeZone; |
346 | } |
347 | |
348 | // set time zone |
349 | if ($realTimeZone) { |
350 | putenv("TZ=".$realTimeZone); |
351 | } |
352 | } |
353 | break; |
354 | } |
355 | |
356 | /** |
357 | * Initialize the template object |
358 | */ |
359 | require(SM_PATH . 'class/template/template.class.php'); |
360 | /* |
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. |
364 | */ |
365 | $aTemplateSet = ( !isset($aTemplateSet) ? array() : $aTemplateSet ); |
366 | $templateset_default = ( !isset($templateset_default) ? 0 : $templateset_default ); |
367 | |
368 | $sTplDir = ( !isset($aTemplateSet[$templateset_default]['PATH']) ? |
369 | SM_PATH . 'templates/default/' : |
370 | $aTemplateSet[$templateset_default]['PATH'] ); |
371 | $oTemplate = new Template($sTplDir); |
372 | |
373 | /** |
374 | * Initialize our custom error handler object |
375 | */ |
376 | require(SM_PATH . 'class/error.class.php'); |
377 | $oErrorHandler = new ErrorHandler($oTemplate,'error_message.tpl'); |
378 | |
379 | /** |
380 | * Activate custom error handling |
381 | */ |
382 | if (version_compare(PHP_VERSION, "4.3.0", ">=")) { |
383 | $oldErrorHandler = set_error_handler(array($oErrorHandler, 'SquirrelMailErrorhandler')); |
384 | } else { |
385 | $oldErrorHandler = set_error_handler('SquirrelMailErrorhandler'); |
386 | } |
387 | |
388 | /** |
389 | * Javascript support detection function |
390 | * @param boolean $reset recheck javascript support if set to true. |
391 | * @return integer SMPREF_JS_ON or SMPREF_JS_OFF ({@see functions/constants.php}) |
392 | * @since 1.5.1 |
393 | */ |
394 | |
395 | function checkForJavascript($reset = FALSE) { |
396 | global $data_dir, $username, $javascript_on, $javascript_setting; |
397 | |
398 | if ( !$reset && sqGetGlobalVar('javascript_on', $javascript_on, SQ_SESSION) ) |
399 | return $javascript_on; |
400 | |
401 | if ( $reset || !isset($javascript_setting) ) |
402 | $javascript_setting = getPref($data_dir, $username, 'javascript_setting', SMPREF_JS_AUTODETECT); |
403 | |
404 | if ( !sqGetGlobalVar('new_js_autodetect_results', $js_autodetect_results) && |
405 | !sqGetGlobalVar('js_autodetect_results', $js_autodetect_results) ) |
406 | $js_autodetect_results = SMPREF_JS_OFF; |
407 | |
408 | if ( $javascript_setting == SMPREF_JS_AUTODETECT ) |
409 | $javascript_on = $js_autodetect_results; |
410 | else |
411 | $javascript_on = $javascript_setting; |
412 | |
413 | sqsession_register($javascript_on, 'javascript_on'); |
414 | return $javascript_on; |
415 | } |
416 | |
417 | function sqm_baseuri() { |
418 | global $base_uri; |
419 | return $base_uri; |
420 | } |