src/configtest.php

   1 <?php
   2
   3 /**
   4  * SquirrelMail configtest script
   5  *
   6  * @copyright &copy; 2003-2007 The SquirrelMail Project Team
   7  * @license http://opensource.org/licenses/gpl-license.php GNU Public License
   8  * @version $Id$
   9  * @package squirrelmail
  10  * @subpackage config
  11  */
  12
  13 /************************************************************
  14  * NOTE: you do not need to change this script!             *
  15  * If it throws errors you need to adjust your config.      *
  16  ************************************************************/
  17
  18 // This script could really use some restructuring as it has grown quite rapidly
  19 // but is not very 'clean'. Feel free to get some structure into this thing.
  20
  21 /** force verbose error reporting and turn on display of errors */
  22 error_reporting(E_ALL);
  23 ini_set('display_errors',1);
  24
  25 /** Blockcopy from init.php. Cleans globals. */
  26 if ((bool) ini_get('register_globals') &&
  27     strtolower(ini_get('register_globals'))!='off') {
  28     /**
  29      * Remove all globals that are not reserved by PHP
  30      * 'value' and 'key' are used by foreach. Don't unset them inside foreach.
  31      */
  32     foreach ($GLOBALS as $key => $value) {
  33         switch($key) {
  34         case 'HTTP_POST_VARS':
  35         case '_POST':
  36         case 'HTTP_GET_VARS':
  37         case '_GET':
  38         case 'HTTP_COOKIE_VARS':
  39         case '_COOKIE':
  40         case 'HTTP_SERVER_VARS':
  41         case '_SERVER':
  42         case 'HTTP_ENV_VARS':
  43         case '_ENV':
  44         case 'HTTP_POST_FILES':
  45         case '_FILES':
  46         case '_REQUEST':
  47         case 'HTTP_SESSION_VARS':
  48         case '_SESSION':
  49         case 'GLOBALS':
  50         case 'key':
  51         case 'value':
  52             break;
  53         default:
  54             unset($GLOBALS[$key]);
  55         }
  56     }
  57     // Unset variables used in foreach
  58     unset($GLOBALS['key']);
  59     unset($GLOBALS['value']);
  60 }
  61
  62
  63 /**
  64  * Displays error messages and warnings
  65  * @param string $str message
  66  * @param boolean $fatal fatal error or only warning
  67  */
  68 function do_err($str, $fatal = TRUE) {
  69     global $IND, $warnings;
  70     $level = $fatal ? 'FATAL ERROR:' : 'WARNING:';
  71     echo '<p>'.$IND.'<font color="red"><b>' . $level . '</b></font> ' .$str. "</p>\n";
  72     if($fatal) {
  73         echo '</body></html>';
  74         exit;
  75     } else {
  76         $warnings++;
  77     }
  78 }
  79
  80 ob_implicit_flush();
  81 /** @ignore */
  82 define('SM_PATH', '../');
  83 /** load minimal function set */
  84 require(SM_PATH . 'functions/global.php');
  85 require(SM_PATH . 'functions/strings.php');
  86
  87 /** set default value in order to block remote access */
  88 $allow_remote_configtest=false;
  89
  90 /** Load all configuration files before output begins */
  91
  92 /* load default configuration */
  93 require(SM_PATH . 'config/config_default.php');
  94 /* reset arrays in default configuration */
  95 $ldap_server = array();
  96 $plugins = array();
  97 $fontsets = array();
  98 $theme = array();
  99 $theme[0]['PATH'] = SM_PATH . 'themes/default_theme.php';
 100 $theme[0]['NAME'] = 'Default';
 101 $aTemplateSet = array();
 102 $aTemplateSet[0]['ID'] = 'default';
 103 $aTemplateSet[0]['NAME'] = 'Default';
 104 /* load site configuration */
 105 if (file_exists(SM_PATH . 'config/config.php')) {
 106     require(SM_PATH . 'config/config.php');
 107 }
 108 /* load local configuration overrides */
 109 if (file_exists(SM_PATH . 'config/config_local.php')) {
 110     require(SM_PATH . 'config/config_local.php');
 111 }
 112
 113 /** Load plugins */
 114 global $disable_plugins;
 115 $squirrelmail_plugin_hooks = array();
 116 if (!$disable_plugins && file_exists(SM_PATH . 'config/plugin_hooks.php')) {
 117     require(SM_PATH . 'config/plugin_hooks.php');
 118 }
 119
 120 /** Warning counter */
 121 $warnings = 0;
 122
 123 /** indent */
 124 $IND = str_repeat('&nbsp;',4);
 125
 126 /**
 127  * get_location starts session and must be run before output is started.
 128  */
 129 $test_location = get_location();
 130
 131 ?><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
 132   "http://www.w3.org/TR/1999/REC-html401-19991224/loose.dtd">
 133 <html>
 134 <head>
 135   <meta name="robots" content="noindex,nofollow">
 136   <title>SquirrelMail configtest</title>
 137 </head>
 138 <body>
 139 <h1>SquirrelMail configtest</h1>
 140
 141 <p>This script will try to check some aspects of your SquirrelMail configuration
 142 and point you to errors whereever it can find them. You need to go run <tt>conf.pl</tt>
 143 in the <tt>config/</tt> directory first before you run this script.</p>
 144
 145 <?php
 146
 147 $included = array_map('basename', get_included_files() );
 148 if(!in_array('config.php', $included)) {
 149     if(!file_exists(SM_PATH . 'config/config.php')) {
 150         do_err('Config file '.SM_PATH . 'config/config.php does not exist!<br />'.
 151                 'You need to run <tt>conf.pl</tt> first.');
 152     }
 153     do_err('Could not read '.SM_PATH.'config/config.php! Check file permissions.');
 154 }
 155 if(!in_array('strings.php', $included)) {
 156     do_err('Could not include '.SM_PATH.'functions/strings.php!<br />'.
 157             'Check permissions on that file.');
 158 }
 159
 160 /* Block remote use of script */
 161 if (! $allow_remote_configtest) {
 162     sqGetGlobalVar('REMOTE_ADDR',$client_ip,SQ_SERVER);
 163     sqGetGlobalVar('SERVER_ADDR',$server_ip,SQ_SERVER);
 164
 165     if ((! isset($client_ip) || $client_ip!='127.0.0.1') &&
 166             (! isset($client_ip) || ! isset($server_ip) || $client_ip!=$server_ip)) {
 167         do_err('Enable "Allow remote configtest" option in squirrelmail configuration in order to use this script.');
 168     }
 169 }
 170 /* checking PHP specs */
 171
 172 echo "<p><table>\n<tr><td>SquirrelMail version:</td><td><b>" . $version . "</b></td></tr>\n" .
 173     '<tr><td>Config file version:</td><td><b>' . $config_version . "</b></td></tr>\n" .
 174     '<tr><td>Config file last modified:</td><td><b>' .
 175     date ('d F Y H:i:s', filemtime(SM_PATH . 'config/config.php')) .
 176     "</b></td></tr>\n</table>\n</p>\n\n";
 177
 178 /* check $config_version */
 179 if ($config_version!='1.5.0') {
 180     do_err('Configuration file version does not match required version. Please update your configuration file.');
 181 }
 182
 183 echo "Checking PHP configuration...<br />\n";
 184
 185 if(!check_php_version(4,1,0)) {
 186     do_err('Insufficient PHP version: '. PHP_VERSION . '! Minimum required: 4.1.0');
 187 }
 188
 189 echo $IND . 'PHP version ' . PHP_VERSION . ' OK. (You have: ' . phpversion() . ". Minimum: 4.1.0)<br />\n";
 190 /* test for boolean false and any string that is not equal to 'off' */
 191 if ((bool) ini_get('register_globals') &&
 192     strtolower(ini_get('register_globals'))!='off') {
 193     do_err('You have register_globals turned on.  This is not an error, but it CAN be a security hazard.  Consider turning register_globals off.', false);
 194 }
 195 $php_exts = array('session','pcre');
 196 $diff = array_diff($php_exts, get_loaded_extensions());
 197 if(count($diff)) {
 198     do_err('Required PHP extensions missing: '.implode(', ',$diff) );
 199 }
 200
 201 echo $IND . "PHP extensions OK.<br />\n";
 202
 203 /* dangerous php settings */
 204 /**
 205  * mbstring.func_overload allows to replace original string and regexp functions
 206  * with their equivalents from php mbstring extension. It causes problems when
 207  * scripts analyze 8bit strings byte after byte or use 8bit strings in regexp tests.
 208  * Setting can be controlled in php.ini (php 4.2.0), webserver config (php 4.2.0)
 209  * and .htaccess files (php 4.3.5).
 210  */
 211 if (function_exists('mb_internal_encoding') &&
 212     check_php_version(4,2,0) &&
 213     (int)ini_get('mbstring.func_overload')!=0) {
 214     $mb_error='You have enabled mbstring overloading.'
 215         .' It can cause problems with SquirrelMail scripts that rely on single byte string functions.';
 216     do_err($mb_error);
 217 }
 218
 219 /**
 220  * Do not use SquirrelMail with magic_quotes_* on.
 221  */
 222 if ( get_magic_quotes_runtime() || get_magic_quotes_gpc() ||
 223     ( (bool) ini_get('magic_quotes_sybase') && ini_get('magic_quotes_sybase') != 'off' )
 224     ) {
 225     $magic_quotes_warning='You have enabled any one of <tt>magic_quotes_runtime</tt>, '
 226         .'<tt>magic_quotes_gpc</tt> or <tt>magic_quotes_sybase</tt> in your PHP '
 227         .'configuration. We recommend all those settings to be off. SquirrelMail '
 228         .'may work with them on, but when experiencing stray backslashes in your mail '
 229         .'or other strange behaviour, it may be advisable to turn them off.';
 230     do_err($magic_quotes_warning,false);
 231 }
 232
 233
 234 /* checking paths */
 235
 236 echo "Checking paths...<br />\n";
 237
 238 if(!file_exists($data_dir)) {
 239     // data_dir is not that important in db_setups.
 240     if (isset($prefs_dsn) && ! empty($prefs_dsn)) {
 241         $data_dir_error = "Data dir ($data_dir) does not exist!\n";
 242         echo $IND .'<font color="red"><b>ERROR:</b></font> ' . $data_dir_error;
 243     } else {
 244         do_err("Data dir ($data_dir) does not exist!");
 245     }
 246 }
 247 // don't check if errors
 248 if(!isset($data_dir_error) && !is_dir($data_dir)) {
 249     if (isset($prefs_dsn) && ! empty($prefs_dsn)) {
 250         $data_dir_error = "Data dir ($data_dir) is not a directory!\n";
 251         echo $IND . '<font color="red"><b>ERROR:</b></font> ' . $data_dir_error;
 252     } else {
 253         do_err("Data dir ($data_dir) is not a directory!");
 254     }
 255 }
 256 // datadir should be executable - but no clean way to test on that
 257 if(!isset($data_dir_error) && !is_writable($data_dir)) {
 258     if (isset($prefs_dsn) && ! empty($prefs_dsn)) {
 259         $data_dir_error = "Data dir ($data_dir) is not writable!\n";
 260         echo $IND . '<font color="red"><b>ERROR:</b></font> ' . $data_dir_error;
 261     } else {
 262         do_err("Data dir ($data_dir) is not writable!");
 263     }
 264 }
 265
 266 if (isset($data_dir_error)) {
 267     echo " Some plugins might need access to data directory.<br />\n";
 268 } else {
 269     // todo_ornot: actually write something and read it back.
 270     echo $IND . "Data dir OK.<br />\n";
 271 }
 272
 273 if($data_dir == $attachment_dir) {
 274     echo $IND . "Attachment dir is the same as data dir.<br />\n";
 275     if (isset($data_dir_error)) {
 276         do_err($data_dir_error);
 277     }
 278 } else {
 279     if(!file_exists($attachment_dir)) {
 280         do_err("Attachment dir ($attachment_dir) does not exist!");
 281     }
 282     if (!is_dir($attachment_dir)) {
 283         do_err("Attachment dir ($attachment_dir) is not a directory!");
 284     }
 285     if (!is_writable($attachment_dir)) {
 286         do_err("I cannot write to attachment dir ($attachment_dir)!");
 287     }
 288     echo $IND . "Attachment dir OK.<br />\n";
 289 }
 290
 291
 292 /* check plugins and themes */
 293 //FIXME: check requirements given in plugin _info() function, such
 294 //       as required PHP extensions, Pear packages, other plugins, SM version, etc
 295 //       see development docs for list of returned info from that function
 296 $bad_plugins = array(
 297         'attachment_common',      // Integrated into SquirrelMail 1.2 core
 298         'auto_prune_sent',        // Obsolete: See Proon Automatic Folder Pruning plugin
 299         'compose_new_window',     // Integrated into SquirrelMail 1.4 core
 300         'delete_move_next',       // Integrated into SquirrelMail 1.5 core
 301         'disk_quota',             // Obsolete: See Check Quota plugin
 302         'email_priority',         // Integrated into SquirrelMail 1.2 core
 303         'emoticons',              // Obsolete: See HTML Mail plugin
 304         'focus_change',           // Integrated into SquirrelMail 1.2 core
 305         'folder_settings',        // Integrated into SquirrelMail 1.5.1 core
 306         'global_sql_addressbook', // Integrated into SquirrelMail 1.4 core
 307         'hancock',                // Not Working: See Random Signature Taglines plugin
 308         'msg_flags',              // Integrated into SquirrelMail 1.5.1 core
 309         'message_source',         // Added to SquirrelMail 1.4 Core Plugins (message_details)
 310         'motd',                   // Integrated into SquirrelMail 1.2 core
 311         'paginator',              // Integrated into SquirrelMail 1.2 core
 312         'printer_friendly',       // Integrated into SquirrelMail 1.2 core
 313         'procfilter',             // Obsolete: See Server Side Filter plugin
 314         'redhat_php_cgi_fix',     // Integrated into SquirrelMail 1.1.1 core
 315         'send_to_semicolon',      // Integrated into SquirrelMail 1.4.1 core
 316         'spamassassin',           // Not working beyond SquirrelMail 1.2.7: See Spamassassin SpamFilter (Frontend) v2 plugin
 317         'sqcalendar',             // Added to SquirrelMail 1.2 Core Plugins (calendar)
 318         'sqclock',                // Integrated into SquirrelMail 1.2 core
 319         'sql_squirrel_logger',    // Obsolete: See Squirrel Logger plugin
 320         'tmda',                   // Obsolete: See TMDA Tools plugin
 321         'vacation',               // Obsolete: See Vacation Local plugin
 322         'view_as_html',           // Integrated into SquirrelMail 1.5.1 core
 323         'xmailer'                 // Integrated into SquirrelMail 1.2 core
 324         );
 325
 326 if (isset($plugins[0])) {
 327     foreach($plugins as $plugin) {
 328         if(!file_exists(SM_PATH .'plugins/'.$plugin)) {
 329             do_err('You have enabled the <i>'.$plugin.'</i> plugin, but I cannot find it.', FALSE);
 330         } elseif (!is_readable(SM_PATH .'plugins/'.$plugin.'/setup.php')) {
 331             do_err('You have enabled the <i>'.$plugin.'</i> plugin, but I cannot read its setup.php file.', FALSE);
 332         } elseif (in_array($plugin, $bad_plugins)) {
 333             do_err('You have enabled the <i>'.$plugin.'</i> plugin, which causes problems with this version of SquirrelMail. Please check the ReleaseNotes or other documentation for more information.', false);
 334         }
 335     }
 336     // load plugin functions
 337     include_once(SM_PATH . 'functions/plugin.php');
 338     // turn on output buffering in order to prevent output of new lines
 339     ob_start();
 340     foreach ($plugins as $name) {
 341         use_plugin($name);
 342     }
 343     // get output and remove whitespace
 344     $output = trim(ob_get_contents());
 345     ob_end_clean();
 346     // if plugins output more than newlines and spacing, stop script execution.
 347     if (!empty($output)) {
 348         $plugin_load_error = 'Some output is produced when plugins are loaded. Usually this means there is an error in one of the plugin setup or configuration files. The output was: '.htmlspecialchars($output);
 349         do_err($plugin_load_error);
 350     }
 351     /**
 352      * This hook was added in 1.5.2 and 1.4.10. Each plugins should print an error
 353      * message and return TRUE if there are any errors in its setup/configuration.
 354      */
 355     $plugin_err = boolean_hook_function('configtest', $null);
 356     if($plugin_err) {
 357         do_err('Some plugin tests failed.');
 358     } else {
 359         echo $IND . "Plugins OK.<br />\n";
 360     }
 361 } else {
 362     echo $IND . "Plugins are not enabled in config.<br />\n";
 363 }
 364 foreach($theme as $thm) {
 365     if(!file_exists($thm['PATH'])) {
 366         do_err('You have enabled the <i>'.$thm['NAME'].'</i> theme but I cannot find it ('.$thm['PATH'].').', FALSE);
 367     } elseif(!is_readable($thm['PATH'])) {
 368         do_err('You have enabled the <i>'.$thm['NAME'].'</i> theme but I cannot read it ('.$thm['PATH'].').', FALSE);
 369     }
 370 }
 371
 372 echo $IND . "Themes OK.<br />\n";
 373
 374 if ( $squirrelmail_default_language != 'en_US' ) {
 375     $loc_path = SM_PATH .'locale/'.$squirrelmail_default_language.'/LC_MESSAGES/squirrelmail.mo';
 376     if( ! file_exists( $loc_path ) ) {
 377         do_err('You have set <i>' . $squirrelmail_default_language .
 378                 '</i> as your default language, but I cannot find this translation (should be '.
 379                 'in <tt>' . $loc_path . '</tt>). Please note that you have to download translations '.
 380                 'separately from the main SquirrelMail package.', FALSE);
 381     } elseif ( ! is_readable( $loc_path ) ) {
 382         do_err('You have set <i>' . $squirrelmail_default_language .
 383                 '</i> as your default language, but I cannot read this translation (file '.
 384                 'in <tt>' . $loc_path . '</tt> unreadable).', FALSE);
 385     } else {
 386         echo $IND . "Default language OK.<br />\n";
 387     }
 388 } else {
 389     echo $IND . "Default language OK.<br />\n";
 390 }
 391
 392 echo $IND . "Base URL detected as: <tt>" . htmlspecialchars($test_location) .
 393     "</tt> (location base " . (empty($config_location_base) ? 'autodetected' : 'set to <tt>' .
 394     htmlspecialchars($config_location_base)."</tt>") . ")<br />\n";
 395
 396 /* check minimal requirements for other security options */
 397
 398 /* imaps or ssmtp */
 399 if($use_smtp_tls == 1 || $use_imap_tls == 1) {
 400     if(!check_php_version(4,3,0)) {
 401         do_err('You need at least PHP 4.3.0 for SMTP/IMAP TLS!');
 402     }
 403     if(!extension_loaded('openssl')) {
 404         do_err('You need the openssl PHP extension to use SMTP/IMAP TLS!');
 405     }
 406 }
 407 /* starttls extensions */
 408 if($use_smtp_tls === 2 || $use_imap_tls === 2) {
 409     if (! function_exists('stream_socket_enable_crypto')) {
 410         do_err('If you want to use STARTTLS extension, you need stream_socket_enable_crypto() function from PHP 5.1.0 and newer.');
 411     }
 412 }
 413 /* digest-md5 */
 414 if ($smtp_auth_mech=='digest-md5' || $imap_auth_mech =='digest-md5') {
 415     if (!extension_loaded('xml')) {
 416         do_err('You need the PHP XML extension to use Digest-MD5 authentication!');
 417     }
 418 }
 419
 420 /* check outgoing mail */
 421
 422 echo "Checking outgoing mail service....<br />\n";
 423
 424 if($useSendmail) {
 425     // is_executable also checks for existance, but we want to be as precise as possible with the errors
 426     if(!file_exists($sendmail_path)) {
 427         do_err("Location of sendmail program incorrect ($sendmail_path)!");
 428     }
 429     if(!is_executable($sendmail_path)) {
 430         do_err("I cannot execute the sendmail program ($sendmail_path)!");
 431     }
 432
 433     echo $IND . "sendmail OK<br />\n";
 434 } else {
 435     $stream = fsockopen( ($use_smtp_tls==1?'tls://':'').$smtpServerAddress, $smtpPort,
 436             $errorNumber, $errorString);
 437     if(!$stream) {
 438         do_err("Error connecting to SMTP server \"$smtpServerAddress:$smtpPort\".".
 439                 "Server error: ($errorNumber) ".htmlspecialchars($errorString));
 440     }
 441
 442     // check for SMTP code; should be 2xx to allow us access
 443     $smtpline = fgets($stream, 1024);
 444     if(((int) $smtpline{0}) > 3) {
 445         do_err("Error connecting to SMTP server. Server error: ".
 446                 htmlspecialchars($smtpline));
 447     }
 448
 449     /* smtp starttls checks */
 450     if ($use_smtp_tls===2) {
 451         // if something breaks, script should close smtp connection on exit.
 452
 453         // say helo
 454         fwrite($stream,"EHLO $client_ip\r\n");
 455
 456         $ehlo=array();
 457         $ehlo_error = false;
 458         while ($line=fgets($stream, 1024)){
 459             if (preg_match("/^250(-|\s)(\S*)\s+(\S.*)/",$line,$match)||
 460                     preg_match("/^250(-|\s)(\S*)\s+/",$line,$match)) {
 461                 if (!isset($match[3])) {
 462                     // simple one word extension
 463                     $ehlo[strtoupper($match[2])]='';
 464                 } else {
 465                     // ehlo-keyword + ehlo-param
 466                     $ehlo[strtoupper($match[2])]=trim($match[3]);
 467                 }
 468                 if ($match[1]==' ') {
 469                     $ret = $line;
 470                     break;
 471                 }
 472             } else {
 473                 //
 474                 $ehlo_error = true;
 475                 $ehlo[]=$line;
 476                 break;
 477             }
 478         }
 479         if ($ehlo_error) {
 480             do_err('SMTP EHLO failed. You need ESMTP support for SMTP STARTTLS');
 481         } elseif (!array_key_exists('STARTTLS',$ehlo)) {
 482             do_err('STARTTLS support is not declared by SMTP server.');
 483         }
 484
 485         fwrite($stream,"STARTTLS\r\n");
 486         $starttls_response=fgets($stream, 1024);
 487         if ($starttls_response[0]!=2) {
 488             $starttls_cmd_err = 'SMTP STARTTLS failed. Server replied: '
 489                 .htmlspecialchars($starttls_response);
 490             do_err($starttls_cmd_err);
 491         } elseif(! stream_socket_enable_crypto($stream,true,STREAM_CRYPTO_METHOD_TLS_CLIENT)) {
 492             do_err('Failed to enable encryption on SMTP STARTTLS connection.');
 493         } else {
 494             echo $IND . "SMTP STARTTLS extension looks OK.<br />\n";
 495         }
 496         // According to RFC we should second ehlo call here.
 497     }
 498
 499     fputs($stream, 'QUIT');
 500     fclose($stream);
 501     echo $IND . 'SMTP server OK (<tt><small>'.
 502             trim(htmlspecialchars($smtpline))."</small></tt>)<br />\n";
 503
 504     /* POP before SMTP */
 505     if($pop_before_smtp) {
 506         $stream = fsockopen($smtpServerAddress, 110, $err_no, $err_str);
 507         if (!$stream) {
 508             do_err("Error connecting to POP Server ($smtpServerAddress:110) "
 509                 . $err_no . ' : ' . htmlspecialchars($err_str));
 510         }
 511
 512         $tmp = fgets($stream, 1024);
 513         if (substr($tmp, 0, 3) != '+OK') {
 514             do_err("Error connecting to POP Server ($smtpServerAddress:110)"
 515                 . ' '.htmlspecialchars($tmp));
 516         }
 517         fputs($stream, 'QUIT');
 518         fclose($stream);
 519         echo $IND . "POP-before-SMTP OK.<br />\n";
 520     }
 521 }
 522
 523 /**
 524  * Check the IMAP server
 525  */
 526 echo "Checking IMAP service....<br />\n";
 527
 528 /** Can we open a connection? */
 529 $stream = fsockopen( ($use_imap_tls==1?'tls://':'').$imapServerAddress, $imapPort,
 530         $errorNumber, $errorString);
 531 if(!$stream) {
 532     do_err("Error connecting to IMAP server \"$imapServerAddress:$imapPort\".".
 533             "Server error: ($errorNumber) ".
 534             htmlspecialchars($errorString));
 535 }
 536
 537 /** Is the first response 'OK'? */
 538 $imapline = fgets($stream, 1024);
 539 if(substr($imapline, 0,4) != '* OK') {
 540     do_err('Error connecting to IMAP server. Server error: '.
 541             htmlspecialchars($imapline));
 542 }
 543
 544 echo $IND . 'IMAP server ready (<tt><small>'.
 545     htmlspecialchars(trim($imapline))."</small></tt>)<br />\n";
 546
 547 /** Check capabilities */
 548 fputs($stream, "A001 CAPABILITY\r\n");
 549 $capline = '';
 550 while ($line=fgets($stream, 1024)){
 551     if (preg_match("/A001.*/",$line)) {
 552         break;
 553     } else {
 554         $capline.=$line;
 555     }
 556 }
 557
 558 /* don't display capabilities before STARTTLS */
 559 if ($use_imap_tls===2 && stristr($capline, 'STARTTLS') === false) {
 560     do_err('Your server doesn\'t support STARTTLS.');
 561 } elseif($use_imap_tls===2) {
 562     /* try starting starttls */
 563     fwrite($stream,"A002 STARTTLS\r\n");
 564     $starttls_line=fgets($stream, 1024);
 565     if (! preg_match("/^A002 OK.*/i",$starttls_line)) {
 566         $imap_starttls_err = 'IMAP STARTTLS failed. Server replied: '
 567             .htmlspecialchars($starttls_line);
 568         do_err($imap_starttls_err);
 569     } elseif (! stream_socket_enable_crypto($stream,true,STREAM_CRYPTO_METHOD_TLS_CLIENT)) {
 570         do_err('Failed to enable encryption on IMAP connection.');
 571     } else {
 572         echo $IND . "IMAP STARTTLS extension looks OK.<br />\n";
 573     }
 574
 575     // get new capability line
 576     fwrite($stream,"A003 CAPABILITY\r\n");
 577     $capline='';
 578     while ($line=fgets($stream, 1024)){
 579         if (preg_match("/A003.*/",$line)) {
 580             break;
 581         } else {
 582             $capline.=$line;
 583         }
 584     }
 585 }
 586
 587 echo $IND . 'Capabilities: <tt>'.htmlspecialchars($capline)."</tt><br />\n";
 588
 589 if($imap_auth_mech == 'login' && stristr($capline, 'LOGINDISABLED') !== FALSE) {
 590     do_err('Your server doesn\'t allow plaintext logins. '.
 591             'Try enabling another authentication mechanism like CRAM-MD5, DIGEST-MD5 or TLS-encryption '.
 592             'in the SquirrelMail configuration.', FALSE);
 593 }
 594
 595 if (stristr($capline, 'XMAGICTRASH') !== false) {
 596     $magic_trash = 'It looks like IMAP_MOVE_EXPUNGE_TO_TRASH option is turned on '
 597         .'in your Courier IMAP configuration. Courier does not provide tools that '
 598         .'allow to detect folder used for Trash or commands are not documented. '
 599         .'SquirrelMail can\'t detect special trash folder. SquirrelMail manages '
 600         .'all message deletion or move operations internally and '
 601         .'IMAP_MOVE_EXPUNGE_TO_TRASH option can cause errors in message and '
 602         .'folder management operations. Please turn off IMAP_MOVE_EXPUNGE_TO_TRASH '
 603         .'option in Courier imapd configuration.';
 604     do_err($magic_trash,false);
 605 }
 606
 607 /* add warning about IMAP delivery */
 608 if (stristr($capline, 'XCOURIEROUTBOX') !== false) {
 609     $courier_outbox = 'OUTBOX setting is enabled in your Courier imapd '
 610         .'configuration. SquirrelMail uses standard SMTP protocol or sendmail '
 611         .'binary to send emails. Courier IMAP delivery method is not supported'
 612         .' and can create duplicate email messages.';
 613     do_err($courier_outbox,false);
 614 }
 615
 616 /** OK, close connection */
 617 fputs($stream, "A004 LOGOUT\r\n");
 618 fclose($stream);
 619
 620 echo "Checking internationalization (i18n) settings...<br />\n";
 621 echo "$IND gettext - ";
 622 if (function_exists('gettext')) {
 623     echo 'Gettext functions are available.'
 624         .' On some systems you must have appropriate system locales compiled.'
 625         ."<br />\n";
 626
 627     /* optional setlocale() tests. Should work only on glibc systems. */
 628     if (sqgetGlobalVar('testlocales',$testlocales,SQ_GET)) {
 629         include_once(SM_PATH . 'include/languages.php');
 630         echo $IND . $IND . 'Testing translations:<br>';
 631         foreach ($languages as $lang_code => $lang_data) {
 632             /* don't test aliases */
 633             if (isset($lang_data['NAME'])) {
 634                 /* locale can be $lang_code or $lang_data['LOCALE'] */
 635                 if (isset($lang_data['LOCALE'])) {
 636                     $setlocale = $lang_data['LOCALE'];
 637                 } else {
 638                     $setlocale = $lang_code;
 639                 }
 640                 /* prepare information about tested locales */
 641                 if (is_array($setlocale)) {
 642                     $display_locale = implode(', ',$setlocale);
 643                     $locale_count = count($setlocale);
 644                 } else {
 645                     $display_locale = $setlocale;
 646                     $locale_count = 1;
 647                 }
 648                 $tested_locales_msg = 'Tested '.htmlspecialchars($display_locale).' '
 649                     .($locale_count>1 ? 'locales':'locale'). '.';
 650
 651                 echo $IND . $IND .$IND . $lang_data['NAME'].' (' .$lang_code. ') - ';
 652                 $retlocale = sq_setlocale(LC_ALL,$setlocale);
 653                 if (is_bool($retlocale)) {
 654                     echo '<font color="red">unsupported</font>. ';
 655                     echo $tested_locales_msg;
 656                 } else {
 657                     echo 'supported. '
 658                         .$tested_locales_msg
 659                         .' setlocale() returned "'.htmlspecialchars($retlocale).'"';
 660                 }
 661                 echo "<br />\n";
 662             }
 663         }
 664         echo $IND . $IND . '<a href="configtest.php">Don\'t test translations</a>';
 665     } else {
 666         echo $IND . $IND . '<a href="configtest.php?testlocales=1">Test translations</a>. '
 667             .'This test is not accurate and might work only on some systems.'
 668             ."\n";
 669     }
 670     echo "<br />\n";
 671     /* end of translation tests */
 672 } else {
 673     echo 'Gettext functions are unavailable.'
 674         .' SquirrelMail will use slower internal gettext functions.'
 675         ."<br />\n";
 676 }
 677 echo "$IND mbstring - ";
 678 if (function_exists('mb_detect_encoding')) {
 679     echo "Mbstring functions are available.<br />\n";
 680 } else {
 681     echo 'Mbstring functions are unavailable.'
 682         ." Japanese translation won't work.<br />\n";
 683 }
 684 echo "$IND recode - ";
 685 if (function_exists('recode')) {
 686     echo "Recode functions are available.<br />\n";
 687 } elseif (isset($use_php_recode) && $use_php_recode) {
 688     echo "Recode functions are unavailable.<br />\n";
 689     do_err('Your configuration requires recode support, but recode support is missing.');
 690 } else {
 691     echo "Recode functions are unavailable.<br />\n";
 692 }
 693 echo "$IND iconv - ";
 694 if (function_exists('iconv')) {
 695     echo "Iconv functions are available.<br />\n";
 696 } elseif (isset($use_php_iconv) && $use_php_iconv) {
 697     echo "Iconv functions are unavailable.<br />\n";
 698     do_err('Your configuration requires iconv support, but iconv support is missing.');
 699 } else {
 700     echo "Iconv functions are unavailable.<br />\n";
 701 }
 702 // same test as in include/init.php + date_default_timezone_set check
 703 echo "$IND timezone - ";
 704 if ( (!ini_get('safe_mode')) || function_exists('date_default_timezone_set') ||
 705         !strcmp(ini_get('safe_mode_allowed_env_vars'),'') ||
 706         preg_match('/^([\w_]+,)*TZ/', ini_get('safe_mode_allowed_env_vars')) ) {
 707     echo "Webmail users can change their time zone settings. \n";
 708 } else {
 709     echo "Webmail users can't change their time zone settings. \n";
 710 }
 711 if (isset($_ENV['TZ'])) {
 712     echo 'Default time zone is '.htmlspecialchars($_ENV['TZ']);
 713 } else {
 714     echo 'Current time zone is '.date('T');
 715 }
 716 echo ".<br />\n";
 717
 718 // Pear DB tests
 719 echo "Checking database functions...<br />\n";
 720 if($addrbook_dsn || $prefs_dsn || $addrbook_global_dsn) {
 721     @include_once('DB.php');
 722     if (class_exists('DB')) {
 723         echo "$IND PHP Pear DB support is present.<br />\n";
 724         $db_functions=array(
 725                 'dbase' => 'dbase_open',
 726                 'fbsql' => 'fbsql_connect',
 727                 'interbase' => 'ibase_connect',
 728                 'informix' => 'ifx_connect',
 729                 'msql' => 'msql_connect',
 730                 'mssql' => 'mssql_connect',
 731                 'mysql' => 'mysql_connect',
 732                 'mysqli' => 'mysqli_connect',
 733                 'oci8' => 'ocilogon',
 734                 'odbc' => 'odbc_connect',
 735                 'pgsql' => 'pg_connect',
 736                 'sqlite' => 'sqlite_open',
 737                 'sybase' => 'sybase_connect'
 738                 );
 739
 740         $dsns = array();
 741         if($prefs_dsn) {
 742             $dsns['preferences'] = $prefs_dsn;
 743         }
 744         if($addrbook_dsn) {
 745             $dsns['addressbook'] = $addrbook_dsn;
 746         }
 747         if($addrbook_global_dsn) {
 748             $dsns['global addressbook'] = $addrbook_global_dsn;
 749         }
 750
 751         foreach($dsns as $type => $dsn) {
 752             $aDsn = explode(':', $dsn);
 753             $dbtype = array_shift($aDsn);
 754             if(isset($db_functions[$dbtype]) && function_exists($db_functions[$dbtype])) {
 755                 echo "$IND$dbtype database support present.<br />\n";
 756
 757                 // now, test this interface:
 758
 759                 $dbh = DB::connect($dsn, true);
 760                 if (DB::isError($dbh)) {
 761                     do_err('Database error: '. htmlspecialchars(DB::errorMessage($dbh)) .
 762                             ' in ' .$type .' DSN.');
 763                 }
 764                 $dbh->disconnect();
 765                 echo "$IND$type database connect successful.<br />\n";
 766
 767             } else {
 768                 do_err($dbtype.' database support not present!');
 769             }
 770         }
 771     } else {
 772         $db_error='Required PHP PEAR DB support is not available.'
 773             .' Is PEAR installed and is the include path set correctly to find <tt>DB.php</tt>?'
 774             .' The include path is now:<tt>' . ini_get('include_path') . '</tt>.';
 775         do_err($db_error);
 776     }
 777 } else {
 778     echo $IND."not using database functionality.<br />\n";
 779 }
 780
 781 // LDAP DB tests
 782 echo "Checking LDAP functions...<br />\n";
 783 if( empty($ldap_server) ) {
 784     echo $IND."not using LDAP functionality.<br />\n";
 785 } else {
 786     if ( !function_exists('ldap_connect') ) {
 787         do_err('Required LDAP support is not available.');
 788     } else {
 789         echo "$IND LDAP support present.<br />\n";
 790         foreach ( $ldap_server as $param ) {
 791
 792             $linkid = @ldap_connect($param['host'], (empty($param['port']) ? 389 : $param['port']) );
 793
 794             if ( $linkid ) {
 795                 echo "$IND LDAP connect to ".$param['host']." successful: ".$linkid."<br />\n";
 796
 797                 if ( !empty($param['protocol']) &&
 798                         !ldap_set_option($linkid, LDAP_OPT_PROTOCOL_VERSION, $param['protocol']) ) {
 799                     do_err('Unable to set LDAP protocol');
 800                 }
 801
 802                 if ( empty($param['binddn']) ) {
 803                     $bind = @ldap_bind($linkid);
 804                 } else {
 805                     $bind = @ldap_bind($param['binddn'], $param['bindpw']);
 806                 }
 807
 808                 if ( $bind ) {
 809                     echo "$IND LDAP Bind Successful <br />";
 810                 } else {
 811                     do_err('Unable to Bind to LDAP Server');
 812                 }
 813
 814                 @ldap_close($linkid);
 815             } else {
 816                 do_err('Connection to LDAP failed');
 817             }
 818         }
 819     }
 820 }
 821
 822 echo '<hr width="75%" align="center">';
 823 echo '<h2 align="center">Summary</h2>';
 824 $footer = '<hr width="75%" align="center">';
 825 if ($warnings) {
 826     echo '<p>No fatal errors were found, but there was at least 1 warning.  Please check the flagged issue(s) carefully, as correcting them may prevent erratic, undefined, or incorrect behavior (or flat out breakage).</p>';
 827     echo $footer;
 828 } else {
 829     print <<< EOF
 830 <p>Congratulations, your SquirrelMail setup looks fine to me!</p>
 831
 832 <p><a href="login.php">Login now</a></p>
 833
 834 </body>
 835 </html>
 836 EOF;
 837     echo $footer;
 838 }
 839 ?>