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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 | |
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14 | |
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15 | |
16 | |
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17 | |
18 | /** |
19 | * SquirrelMail internal version number -- DO NOT CHANGE |
20 | * $sm_internal_version = array (release, major, minor) |
21 | */ |
22 | |
23 | $SQM_INTERNAL_VERSION = array(1,5,2); |
24 | |
25 | /** |
26 | * This is a development version so in order to track programmer mistakes we |
27 | * set the error reporting to E_ALL |
28 | */ |
29 | |
30 | error_reporting(E_ALL); |
31 | |
32 | |
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33 | /** |
34 | * If register_globals are on, unregister globals. |
35 | * Code requires PHP 4.1.0 or newer. |
36 | */ |
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37 | |
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38 | if ((bool) @ini_get('register_globals')) { |
39 | /** |
40 | * Remove all globals from $_GET, $_POST, and $_COOKIE. |
41 | */ |
42 | foreach ($_REQUEST as $key => $value) { |
43 | unset($GLOBALS[$key]); |
44 | } |
45 | /** |
46 | * Remove globalized $_FILES variables |
47 | * Before 4.3.0 $_FILES are included in $_REQUEST. |
48 | * Unglobalize them in separate call in order to remove dependency |
49 | * on PHP version. |
50 | */ |
51 | foreach ($_FILES as $key => $value) { |
52 | unset($GLOBALS[$key]); |
53 | // there are three undocumented $_FILES globals. |
54 | unset($GLOBALS[$key.'_type']); |
55 | unset($GLOBALS[$key.'_name']); |
56 | unset($GLOBALS[$key.'_size']); |
57 | } |
58 | /** |
59 | * Remove globalized environment variables. |
60 | */ |
61 | foreach ($_ENV as $key => $value) { |
62 | unset($GLOBALS[$key]); |
63 | } |
64 | /** |
65 | * Remove globalized server variables. |
66 | */ |
67 | foreach ($_SERVER as $key => $value) { |
68 | unset($GLOBALS[$key]); |
69 | } |
70 | } |
71 | |
72 | |
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73 | /** |
74 | * calculate SM_PATH and calculate the base_uri |
75 | * assumptions made: init.php is only called from plugins or from the src dir. |
76 | * files in the plugin directory may not be part of a subdirectory called "src" |
77 | * |
78 | */ |
79 | if (isset($_SERVER['SCRIPT_NAME'])) { |
80 | $a = explode('/',$_SERVER['SCRIPT_NAME']); |
81 | } elseif (isset($HTTP_SERVER_VARS['SCRIPT_NAME'])) { |
82 | $a = explode('/',$_SERVER['SCRIPT_NAME']); |
83 | } |
84 | $sSM_PATH = ''; |
85 | for($i = count($a) -2;$i > -1; --$i) { |
86 | $sSM_PATH .= '../'; |
87 | if ($a[$i] === 'src' || $a[$i] === 'plugins') { |
88 | break; |
89 | } |
90 | } |
91 | |
92 | $base_uri = implode('/',array_slice($a,0,$i)). '/'; |
93 | |
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94 | define('SM_PATH',$sSM_PATH); |
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95 | define('SM_BASE_URI', $base_uri); |
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96 | /** |
97 | * global var $bInit is used to check if initialisation took place. |
98 | * At this moment it's a workarounf for the include of addrbook_search_html |
99 | * inside compose.php. If we found a better way then remove this. Do only use |
100 | * this var if you know for sure a page can be called stand alone and be included |
101 | * in another file. |
102 | */ |
103 | $bInit = true; |
104 | |
105 | require(SM_PATH . 'functions/global.php'); |
106 | require(SM_PATH . 'config/config.php'); |
107 | require(SM_PATH . 'functions/plugin.php'); |
108 | require(SM_PATH . 'include/constants.php'); |
109 | require(SM_PATH . 'include/languages.php'); |
110 | |
111 | /** |
112 | * If magic_quotes_runtime is on, SquirrelMail breaks in new and creative ways. |
113 | * Force magic_quotes_runtime off. |
114 | * tassium@squirrelmail.org - I put it here in the hopes that all SM code includes this. |
115 | * If there's a better place, please let me know. |
116 | */ |
117 | ini_set('magic_quotes_runtime','0'); |
118 | |
119 | |
120 | /* if running with magic_quotes_gpc then strip the slashes |
121 | from POST and GET global arrays */ |
122 | if (get_magic_quotes_gpc()) { |
123 | sqstripslashes($_GET); |
124 | sqstripslashes($_POST); |
125 | } |
126 | |
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127 | |
128 | /* strip any tags added to the url from PHP_SELF. |
129 | This fixes hand crafted url XXS expoits for any |
130 | page that uses PHP_SELF as the FORM action */ |
131 | $_SERVER['PHP_SELF'] = strip_tags($_SERVER['PHP_SELF']); |
132 | |
133 | $PHP_SELF = php_self(); |
134 | |
135 | /** |
136 | * Initialize the session |
137 | */ |
138 | |
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139 | /** set the name of the session cookie */ |
140 | if (!isset($session_name) || !$session_name) { |
141 | $session_name = 'SQMSESSID'; |
142 | } |
143 | |
144 | /** |
145 | * if session.auto_start is On then close the session |
146 | */ |
147 | $session_autostart_name = session_name(); |
148 | if ((isset($session_autostart_name) || $session_autostart_name == '') && |
149 | $session_autostart_name !== $session_name) { |
150 | $cookiepath = ini_get('session.cookie_path'); |
151 | $cookiedomain = ini_get('session.cookie_domain'); |
152 | // reset the cookie |
153 | setcookie($session_autostart_name,'',time() - 604800,$cookiepath,$cookiedomain); |
154 | @session_destroy(); |
155 | session_write_close(); |
156 | } |
157 | |
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158 | /** |
159 | * includes from classes stored in the session |
160 | */ |
161 | require(SM_PATH . 'class/mime.class.php'); |
162 | |
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163 | ini_set('session.name' , $session_name); |
164 | session_set_cookie_params (0, $base_uri); |
165 | sqsession_is_active(); |
166 | |
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167 | /** |
168 | * Remove globalized session data in rg=on setups |
169 | */ |
170 | if ((bool) @ini_get('register_globals')) { |
171 | foreach ($_SESSION as $key => $value) { |
172 | unset($GLOBALS[$key]); |
173 | } |
174 | } |
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175 | |
176 | sqsession_register($base_uri, SM_BASE_URI); |
177 | |
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178 | /** |
179 | * SquirrelMail version number -- DO NOT CHANGE |
180 | */ |
181 | $version = '1.5.2 [CVS]'; |
182 | |
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183 | /** |
184 | * Retrieve the language cookie |
185 | */ |
186 | if (! sqgetGlobalVar('squirrelmail_language',$squirrelmail_language,SQ_COOKIE)) { |
187 | $squirrelmail_language = ''; |
188 | } |
189 | |
190 | |
191 | /** |
192 | * @var $sInitlocation From where do we include. |
193 | */ |
194 | if (!isset($sInitLocation)) { |
195 | $sInitLocation=NULL; |
196 | } |
197 | |
198 | /** |
199 | * MAIN PLUGIN LOADING CODE HERE |
200 | */ |
201 | |
202 | /** |
203 | * Include Compatibility plugin if available. |
204 | */ |
205 | if (file_exists(SM_PATH . 'plugins/compatibility/functions.php')) |
206 | include_once(SM_PATH . 'plugins/compatibility/functions.php'); |
207 | $squirrelmail_plugin_hooks = array(); |
208 | |
209 | /* On init, register all plugins configured for use. */ |
210 | if (isset($plugins) && is_array($plugins)) { |
211 | // turn on output buffering in order to prevent output of new lines |
212 | ob_start(); |
213 | foreach ($plugins as $name) { |
214 | use_plugin($name); |
215 | } |
216 | // get output and remove whitespace |
217 | $output = trim(ob_get_contents()); |
218 | ob_end_clean(); |
219 | // if plugins output more than newlines and spacing, stop script execution. |
220 | if (!empty($output)) { |
221 | die($output); |
222 | } |
223 | } |
224 | |
225 | |
226 | switch ($sInitLocation) { |
227 | case 'style': session_write_close(); sqsetcookieflush(); break; |
228 | case 'redirect': |
229 | $prefs_backend = do_hook_function('prefs_backend'); |
230 | if (isset($prefs_backend) && !empty($prefs_backend) && file_exists(SM_PATH . $prefs_backend)) { |
231 | require(SM_PATH . $prefs_backend); |
232 | } elseif (isset($prefs_dsn) && !empty($prefs_dsn)) { |
233 | require(SM_PATH . 'functions/db_prefs.php'); |
234 | } else { |
235 | require(SM_PATH . 'functions/prefs.php'); |
236 | require(SM_PATH . 'functions/file_prefs.php'); |
237 | } |
238 | //nobreak; |
239 | case 'login': |
240 | require(SM_PATH . 'functions/display_messages.php' ); |
241 | require(SM_PATH . 'functions/page_header.php'); |
242 | require(SM_PATH . 'functions/html.php'); |
243 | break; |
244 | default: |
245 | require(SM_PATH . 'functions/display_messages.php' ); |
246 | require(SM_PATH . 'functions/page_header.php'); |
247 | require(SM_PATH . 'functions/html.php'); |
248 | require(SM_PATH . 'functions/strings.php'); |
249 | |
250 | |
251 | /** |
252 | * Check if we are logged in |
253 | */ |
254 | require(SM_PATH . 'functions/auth.php'); |
255 | |
256 | if ( !sqsession_is_registered('user_is_logged_in') ) { |
257 | // First we store some information in the new session to prevent |
258 | // information-loss. |
259 | // |
260 | $session_expired_post = $_POST; |
261 | $session_expired_location = $PHP_SELF; |
262 | if (!sqsession_is_registered('session_expired_post')) { |
263 | sqsession_register($session_expired_post,'session_expired_post'); |
264 | } |
265 | if (!sqsession_is_registered('session_expired_location')) { |
266 | sqsession_register($session_expired_location,'session_expired_location'); |
267 | } |
268 | // signout page will deal with users who aren't logged |
269 | // in on its own; don't show error here |
270 | // |
271 | if (strpos($PHP_SELF, 'signout.php') !== FALSE) { |
272 | return; |
273 | } |
274 | |
275 | set_up_language($squirrelmail_language, true); |
276 | logout_error( _("You must be logged in to access this page.") ); |
277 | exit; |
278 | } |
279 | |
280 | sqgetGlobalVar('username',$username,SQ_SESSION); |
281 | |
282 | /** |
283 | * Setting the prefs backend |
284 | */ |
285 | sqgetGlobalVar('prefs_cache', $prefs_cache, SQ_SESSION ); |
286 | sqgetGlobalVar('prefs_are_cached', $prefs_are_cached, SQ_SESSION ); |
287 | |
288 | if ( !sqsession_is_registered('prefs_are_cached') || |
289 | !isset( $prefs_cache) || |
290 | !is_array( $prefs_cache)) { |
291 | $prefs_are_cached = false; |
292 | $prefs_cache = false; //array(); |
293 | } |
294 | |
295 | $prefs_backend = do_hook_function('prefs_backend'); |
296 | if (isset($prefs_backend) && !empty($prefs_backend) && file_exists(SM_PATH . $prefs_backend)) { |
297 | require(SM_PATH . $prefs_backend); |
298 | } elseif (isset($prefs_dsn) && !empty($prefs_dsn)) { |
299 | require(SM_PATH . 'functions/db_prefs.php'); |
300 | } else { |
301 | require(SM_PATH . 'functions/prefs.php'); |
302 | require(SM_PATH . 'functions/file_prefs.php'); |
303 | } |
304 | |
305 | /** |
306 | * initializing user settings |
307 | */ |
308 | require(SM_PATH . 'include/load_prefs.php'); |
309 | |
310 | |
311 | // i do not understand the frames language cookie story |
312 | /** |
313 | * We'll need this to later have a noframes version |
314 | * |
315 | * Check if the user has a language preference, but no cookie. |
316 | * Send him a cookie with his language preference, if there is |
317 | * such discrepancy. |
318 | */ |
319 | $my_language = getPref($data_dir, $username, 'language'); |
320 | if ($my_language != $squirrelmail_language) { |
321 | sqsetcookie('squirrelmail_language', $my_language, time()+2592000, $base_uri); |
322 | } |
323 | // /dont understand |
324 | |
325 | /** |
326 | * Set up the language. |
327 | */ |
328 | $err=set_up_language(getPref($data_dir, $username, 'language')); |
329 | /* this is the last cookie we set so flush it. */ |
330 | sqsetcookieflush(); |
331 | |
332 | // Japanese translation used without mbstring support |
333 | if ($err==2) { |
334 | $sError = |
335 | "<p>You need to have PHP installed with the multibyte string function \n". |
336 | "enabled (using configure option --enable-mbstring).</p>\n". |
337 | "<p>System assumed that you accidently switched to Japanese translation \n". |
338 | "and reverted your language preference to English.</p>\n". |
339 | "<p>Please refresh this page in order to use webmail.</p>\n"; |
340 | error_box($sError); |
341 | } |
342 | |
343 | $timeZone = getPref($data_dir, $username, 'timezone'); |
344 | |
345 | /* Check to see if we are allowed to set the TZ environment variable. |
346 | * We are able to do this if ... |
347 | * safe_mode is disabled OR |
348 | * safe_mode_allowed_env_vars is empty (you are allowed to set any) OR |
349 | * safe_mode_allowed_env_vars contains TZ |
350 | */ |
351 | $tzChangeAllowed = (!ini_get('safe_mode')) || |
352 | !strcmp(ini_get('safe_mode_allowed_env_vars'),'') || |
353 | preg_match('/^([\w_]+,)*TZ/', ini_get('safe_mode_allowed_env_vars')); |
354 | |
355 | if ( $timeZone != SMPREF_NONE && ($timeZone != "") |
356 | && $tzChangeAllowed ) { |
357 | |
358 | // get time zone key, if strict or custom strict timezones are used |
359 | if (isset($time_zone_type) && |
360 | ($time_zone_type == 1 || $time_zone_type == 3)) { |
361 | /* load time zone functions */ |
362 | require(SM_PATH . 'include/timezones.php'); |
363 | $realTimeZone = sq_get_tz_key($timeZone); |
364 | } else { |
365 | $realTimeZone = $timeZone; |
366 | } |
367 | |
368 | // set time zone |
369 | if ($realTimeZone) { |
370 | putenv("TZ=".$realTimeZone); |
371 | } |
372 | } |
373 | break; |
374 | } |
375 | |
376 | /** |
377 | * Initialize the template object |
378 | */ |
379 | require(SM_PATH . 'class/template/template.class.php'); |
380 | /* |
381 | * $sTplDir is not initialized when a user is not logged in, so we will use |
382 | * the config file defaults here. If the neccesary variables are net set, |
383 | * force a default value. |
384 | */ |
385 | $aTemplateSet = ( !isset($aTemplateSet) ? array() : $aTemplateSet ); |
386 | $templateset_default = ( !isset($templateset_default) ? 0 : $templateset_default ); |
387 | |
388 | $sTplDir = ( !isset($aTemplateSet[$templateset_default]['PATH']) ? |
389 | SM_PATH . 'templates/default/' : |
390 | $aTemplateSet[$templateset_default]['PATH'] ); |
391 | $oTemplate = new Template($sTplDir); |
392 | |
393 | /** |
394 | * Initialize our custom error handler object |
395 | */ |
396 | require(SM_PATH . 'class/error.class.php'); |
397 | $oErrorHandler = new ErrorHandler($oTemplate,'error_message.tpl'); |
398 | |
399 | /** |
400 | * Activate custom error handling |
401 | */ |
402 | if (version_compare(PHP_VERSION, "4.3.0", ">=")) { |
403 | $oldErrorHandler = set_error_handler(array($oErrorHandler, 'SquirrelMailErrorhandler')); |
404 | } else { |
405 | $oldErrorHandler = set_error_handler('SquirrelMailErrorhandler'); |
406 | } |
407 | |
408 | /** |
409 | * Javascript support detection function |
410 | * @param boolean $reset recheck javascript support if set to true. |
411 | * @return integer SMPREF_JS_ON or SMPREF_JS_OFF ({@see functions/constants.php}) |
412 | * @since 1.5.1 |
413 | */ |
414 | |
415 | function checkForJavascript($reset = FALSE) { |
416 | global $data_dir, $username, $javascript_on, $javascript_setting; |
417 | |
418 | if ( !$reset && sqGetGlobalVar('javascript_on', $javascript_on, SQ_SESSION) ) |
419 | return $javascript_on; |
420 | |
421 | if ( $reset || !isset($javascript_setting) ) |
422 | $javascript_setting = getPref($data_dir, $username, 'javascript_setting', SMPREF_JS_AUTODETECT); |
423 | |
424 | if ( !sqGetGlobalVar('new_js_autodetect_results', $js_autodetect_results) && |
425 | !sqGetGlobalVar('js_autodetect_results', $js_autodetect_results) ) |
426 | $js_autodetect_results = SMPREF_JS_OFF; |
427 | |
428 | if ( $javascript_setting == SMPREF_JS_AUTODETECT ) |
429 | $javascript_on = $js_autodetect_results; |
430 | else |
431 | $javascript_on = $javascript_setting; |
432 | |
433 | sqsession_register($javascript_on, 'javascript_on'); |
434 | return $javascript_on; |
435 | } |
436 | |
437 | function sqm_baseuri() { |
438 | global $base_uri; |
439 | return $base_uri; |
440 | } |