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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 | |
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 | |
6a2a6e44 |
35 | /** |
36 | * If register_globals are on, unregister globals. |
37 | * Code requires PHP 4.1.0 or newer. |
38 | */ |
39 | if ((bool) @ini_get('register_globals')) { |
40 | /** |
41 | * Remove all globals from $_GET, $_POST, and $_COOKIE. |
42 | */ |
43 | foreach ($_REQUEST as $key => $value) { |
44 | unset($GLOBALS[$key]); |
45 | } |
46 | /** |
47 | * Remove globalized $_FILES variables |
48 | * Before 4.3.0 $_FILES are included in $_REQUEST. |
49 | * Unglobalize them in separate call in order to remove dependency |
50 | * on PHP version. |
51 | */ |
52 | foreach ($_FILES as $key => $value) { |
53 | unset($GLOBALS[$key]); |
54 | // there are three undocumented $_FILES globals. |
55 | unset($GLOBALS[$key.'_type']); |
56 | unset($GLOBALS[$key.'_name']); |
57 | unset($GLOBALS[$key.'_size']); |
58 | } |
59 | /** |
60 | * Remove globalized environment variables. |
61 | */ |
62 | foreach ($_ENV as $key => $value) { |
63 | unset($GLOBALS[$key]); |
64 | } |
65 | /** |
66 | * Remove globalized server variables. |
67 | */ |
68 | foreach ($_SERVER as $key => $value) { |
69 | unset($GLOBALS[$key]); |
70 | } |
71 | } |
72 | |
73 | |
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74 | /** |
75 | * calculate SM_PATH and calculate the base_uri |
76 | * assumptions made: init.php is only called from plugins or from the src dir. |
77 | * files in the plugin directory may not be part of a subdirectory called "src" |
78 | * |
79 | */ |
80 | if (isset($_SERVER['SCRIPT_NAME'])) { |
81 | $a = explode('/',$_SERVER['SCRIPT_NAME']); |
82 | } elseif (isset($HTTP_SERVER_VARS['SCRIPT_NAME'])) { |
83 | $a = explode('/',$_SERVER['SCRIPT_NAME']); |
84 | } |
85 | $sSM_PATH = ''; |
86 | for($i = count($a) -2;$i > -1; --$i) { |
87 | $sSM_PATH .= '../'; |
88 | if ($a[$i] === 'src' || $a[$i] === 'plugins') { |
89 | break; |
90 | } |
91 | } |
92 | |
93 | $base_uri = implode('/',array_slice($a,0,$i)). '/'; |
94 | |
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95 | define('SM_PATH',$sSM_PATH); |
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96 | define('SM_BASE_URI', $base_uri); |
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97 | /** |
98 | * global var $bInit is used to check if initialisation took place. |
99 | * At this moment it's a workarounf for the include of addrbook_search_html |
100 | * inside compose.php. If we found a better way then remove this. Do only use |
101 | * this var if you know for sure a page can be called stand alone and be included |
102 | * in another file. |
103 | */ |
104 | $bInit = true; |
105 | |
106 | require(SM_PATH . 'functions/global.php'); |
107 | require(SM_PATH . 'config/config.php'); |
108 | require(SM_PATH . 'functions/plugin.php'); |
109 | require(SM_PATH . 'include/constants.php'); |
110 | require(SM_PATH . 'include/languages.php'); |
111 | |
112 | /** |
113 | * If magic_quotes_runtime is on, SquirrelMail breaks in new and creative ways. |
114 | * Force magic_quotes_runtime off. |
115 | * tassium@squirrelmail.org - I put it here in the hopes that all SM code includes this. |
116 | * If there's a better place, please let me know. |
117 | */ |
118 | ini_set('magic_quotes_runtime','0'); |
119 | |
120 | |
121 | /* if running with magic_quotes_gpc then strip the slashes |
122 | from POST and GET global arrays */ |
123 | if (get_magic_quotes_gpc()) { |
124 | sqstripslashes($_GET); |
125 | sqstripslashes($_POST); |
126 | } |
127 | |
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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, $base_uri); |
151 | sqsession_is_active(); |
152 | |
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153 | /** |
154 | * Remove globalized session data in rg=on setups |
155 | */ |
156 | if ((bool) @ini_get('register_globals')) { |
157 | foreach ($_SESSION as $key => $value) { |
158 | unset($GLOBALS[$key]); |
159 | } |
160 | } |
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161 | |
162 | sqsession_register($base_uri, SM_BASE_URI); |
163 | |
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164 | /** |
165 | * Retrieve the language cookie |
166 | */ |
167 | if (! sqgetGlobalVar('squirrelmail_language',$squirrelmail_language,SQ_COOKIE)) { |
168 | $squirrelmail_language = ''; |
169 | } |
170 | |
171 | |
172 | /** |
173 | * @var $sInitlocation From where do we include. |
174 | */ |
175 | if (!isset($sInitLocation)) { |
176 | $sInitLocation=NULL; |
177 | } |
178 | |
179 | /** |
180 | * MAIN PLUGIN LOADING CODE HERE |
181 | */ |
182 | |
183 | /** |
184 | * Include Compatibility plugin if available. |
185 | */ |
186 | if (file_exists(SM_PATH . 'plugins/compatibility/functions.php')) |
187 | include_once(SM_PATH . 'plugins/compatibility/functions.php'); |
188 | $squirrelmail_plugin_hooks = array(); |
189 | |
190 | /* On init, register all plugins configured for use. */ |
191 | if (isset($plugins) && is_array($plugins)) { |
192 | // turn on output buffering in order to prevent output of new lines |
193 | ob_start(); |
194 | foreach ($plugins as $name) { |
195 | use_plugin($name); |
196 | } |
197 | // get output and remove whitespace |
198 | $output = trim(ob_get_contents()); |
199 | ob_end_clean(); |
200 | // if plugins output more than newlines and spacing, stop script execution. |
201 | if (!empty($output)) { |
202 | die($output); |
203 | } |
204 | } |
205 | |
206 | |
207 | switch ($sInitLocation) { |
208 | case 'style': session_write_close(); sqsetcookieflush(); break; |
209 | case 'redirect': |
210 | $prefs_backend = do_hook_function('prefs_backend'); |
211 | if (isset($prefs_backend) && !empty($prefs_backend) && file_exists(SM_PATH . $prefs_backend)) { |
212 | require(SM_PATH . $prefs_backend); |
213 | } elseif (isset($prefs_dsn) && !empty($prefs_dsn)) { |
214 | require(SM_PATH . 'functions/db_prefs.php'); |
215 | } else { |
216 | require(SM_PATH . 'functions/prefs.php'); |
217 | require(SM_PATH . 'functions/file_prefs.php'); |
218 | } |
219 | //nobreak; |
220 | case 'login': |
221 | require(SM_PATH . 'functions/display_messages.php' ); |
222 | require(SM_PATH . 'functions/page_header.php'); |
223 | require(SM_PATH . 'functions/html.php'); |
224 | break; |
225 | default: |
226 | require(SM_PATH . 'functions/display_messages.php' ); |
227 | require(SM_PATH . 'functions/page_header.php'); |
228 | require(SM_PATH . 'functions/html.php'); |
229 | require(SM_PATH . 'functions/strings.php'); |
230 | |
231 | |
232 | /** |
233 | * Check if we are logged in |
234 | */ |
235 | require(SM_PATH . 'functions/auth.php'); |
236 | |
237 | if ( !sqsession_is_registered('user_is_logged_in') ) { |
238 | // First we store some information in the new session to prevent |
239 | // information-loss. |
240 | // |
241 | $session_expired_post = $_POST; |
242 | $session_expired_location = $PHP_SELF; |
243 | if (!sqsession_is_registered('session_expired_post')) { |
244 | sqsession_register($session_expired_post,'session_expired_post'); |
245 | } |
246 | if (!sqsession_is_registered('session_expired_location')) { |
247 | sqsession_register($session_expired_location,'session_expired_location'); |
248 | } |
249 | // signout page will deal with users who aren't logged |
250 | // in on its own; don't show error here |
251 | // |
252 | if (strpos($PHP_SELF, 'signout.php') !== FALSE) { |
253 | return; |
254 | } |
255 | |
256 | set_up_language($squirrelmail_language, true); |
257 | logout_error( _("You must be logged in to access this page.") ); |
258 | exit; |
259 | } |
260 | |
261 | sqgetGlobalVar('username',$username,SQ_SESSION); |
262 | |
263 | /** |
264 | * Setting the prefs backend |
265 | */ |
266 | sqgetGlobalVar('prefs_cache', $prefs_cache, SQ_SESSION ); |
267 | sqgetGlobalVar('prefs_are_cached', $prefs_are_cached, SQ_SESSION ); |
268 | |
269 | if ( !sqsession_is_registered('prefs_are_cached') || |
270 | !isset( $prefs_cache) || |
271 | !is_array( $prefs_cache)) { |
272 | $prefs_are_cached = false; |
273 | $prefs_cache = false; //array(); |
274 | } |
275 | |
276 | $prefs_backend = do_hook_function('prefs_backend'); |
277 | if (isset($prefs_backend) && !empty($prefs_backend) && file_exists(SM_PATH . $prefs_backend)) { |
278 | require(SM_PATH . $prefs_backend); |
279 | } elseif (isset($prefs_dsn) && !empty($prefs_dsn)) { |
280 | require(SM_PATH . 'functions/db_prefs.php'); |
281 | } else { |
282 | require(SM_PATH . 'functions/prefs.php'); |
283 | require(SM_PATH . 'functions/file_prefs.php'); |
284 | } |
285 | |
286 | /** |
287 | * initializing user settings |
288 | */ |
289 | require(SM_PATH . 'include/load_prefs.php'); |
290 | |
291 | |
292 | // i do not understand the frames language cookie story |
293 | /** |
294 | * We'll need this to later have a noframes version |
295 | * |
296 | * Check if the user has a language preference, but no cookie. |
297 | * Send him a cookie with his language preference, if there is |
298 | * such discrepancy. |
299 | */ |
300 | $my_language = getPref($data_dir, $username, 'language'); |
301 | if ($my_language != $squirrelmail_language) { |
302 | sqsetcookie('squirrelmail_language', $my_language, time()+2592000, $base_uri); |
303 | } |
304 | // /dont understand |
305 | |
306 | /** |
307 | * Set up the language. |
308 | */ |
309 | $err=set_up_language(getPref($data_dir, $username, 'language')); |
310 | /* this is the last cookie we set so flush it. */ |
311 | sqsetcookieflush(); |
312 | |
313 | // Japanese translation used without mbstring support |
314 | if ($err==2) { |
315 | $sError = |
316 | "<p>You need to have PHP installed with the multibyte string function \n". |
317 | "enabled (using configure option --enable-mbstring).</p>\n". |
318 | "<p>System assumed that you accidently switched to Japanese translation \n". |
319 | "and reverted your language preference to English.</p>\n". |
320 | "<p>Please refresh this page in order to use webmail.</p>\n"; |
321 | error_box($sError); |
322 | } |
323 | |
324 | $timeZone = getPref($data_dir, $username, 'timezone'); |
325 | |
326 | /* Check to see if we are allowed to set the TZ environment variable. |
327 | * We are able to do this if ... |
328 | * safe_mode is disabled OR |
329 | * safe_mode_allowed_env_vars is empty (you are allowed to set any) OR |
330 | * safe_mode_allowed_env_vars contains TZ |
331 | */ |
332 | $tzChangeAllowed = (!ini_get('safe_mode')) || |
333 | !strcmp(ini_get('safe_mode_allowed_env_vars'),'') || |
334 | preg_match('/^([\w_]+,)*TZ/', ini_get('safe_mode_allowed_env_vars')); |
335 | |
336 | if ( $timeZone != SMPREF_NONE && ($timeZone != "") |
337 | && $tzChangeAllowed ) { |
338 | |
339 | // get time zone key, if strict or custom strict timezones are used |
340 | if (isset($time_zone_type) && |
341 | ($time_zone_type == 1 || $time_zone_type == 3)) { |
342 | /* load time zone functions */ |
343 | require(SM_PATH . 'include/timezones.php'); |
344 | $realTimeZone = sq_get_tz_key($timeZone); |
345 | } else { |
346 | $realTimeZone = $timeZone; |
347 | } |
348 | |
349 | // set time zone |
350 | if ($realTimeZone) { |
351 | putenv("TZ=".$realTimeZone); |
352 | } |
353 | } |
354 | break; |
355 | } |
356 | |
357 | /** |
358 | * Initialize the template object |
359 | */ |
360 | require(SM_PATH . 'class/template/template.class.php'); |
361 | /* |
362 | * $sTplDir is not initialized when a user is not logged in, so we will use |
363 | * the config file defaults here. If the neccesary variables are net set, |
364 | * force a default value. |
365 | */ |
366 | $aTemplateSet = ( !isset($aTemplateSet) ? array() : $aTemplateSet ); |
367 | $templateset_default = ( !isset($templateset_default) ? 0 : $templateset_default ); |
368 | |
369 | $sTplDir = ( !isset($aTemplateSet[$templateset_default]['PATH']) ? |
370 | SM_PATH . 'templates/default/' : |
371 | $aTemplateSet[$templateset_default]['PATH'] ); |
372 | $oTemplate = new Template($sTplDir); |
373 | |
374 | /** |
375 | * Initialize our custom error handler object |
376 | */ |
377 | require(SM_PATH . 'class/error.class.php'); |
378 | $oErrorHandler = new ErrorHandler($oTemplate,'error_message.tpl'); |
379 | |
380 | /** |
381 | * Activate custom error handling |
382 | */ |
383 | if (version_compare(PHP_VERSION, "4.3.0", ">=")) { |
384 | $oldErrorHandler = set_error_handler(array($oErrorHandler, 'SquirrelMailErrorhandler')); |
385 | } else { |
386 | $oldErrorHandler = set_error_handler('SquirrelMailErrorhandler'); |
387 | } |
388 | |
389 | /** |
390 | * Javascript support detection function |
391 | * @param boolean $reset recheck javascript support if set to true. |
392 | * @return integer SMPREF_JS_ON or SMPREF_JS_OFF ({@see functions/constants.php}) |
393 | * @since 1.5.1 |
394 | */ |
395 | |
396 | function checkForJavascript($reset = FALSE) { |
397 | global $data_dir, $username, $javascript_on, $javascript_setting; |
398 | |
399 | if ( !$reset && sqGetGlobalVar('javascript_on', $javascript_on, SQ_SESSION) ) |
400 | return $javascript_on; |
401 | |
402 | if ( $reset || !isset($javascript_setting) ) |
403 | $javascript_setting = getPref($data_dir, $username, 'javascript_setting', SMPREF_JS_AUTODETECT); |
404 | |
405 | if ( !sqGetGlobalVar('new_js_autodetect_results', $js_autodetect_results) && |
406 | !sqGetGlobalVar('js_autodetect_results', $js_autodetect_results) ) |
407 | $js_autodetect_results = SMPREF_JS_OFF; |
408 | |
409 | if ( $javascript_setting == SMPREF_JS_AUTODETECT ) |
410 | $javascript_on = $js_autodetect_results; |
411 | else |
412 | $javascript_on = $javascript_setting; |
413 | |
414 | sqsession_register($javascript_on, 'javascript_on'); |
415 | return $javascript_on; |
416 | } |
417 | |
418 | function sqm_baseuri() { |
419 | global $base_uri; |
420 | return $base_uri; |
421 | } |