src/configtest.php

   1 <?php
   2
   3 /**
   4  * SquirrelMail configtest script
   5  *
   6  * @copyright &copy; 2003-2006 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 /** Warning counter */
 114 $warnings = 0;
 115
 116 /** indent */
 117 $IND = str_repeat('&nbsp;',4);
 118
 119 /**
 120  * get_location starts session and must be run before output is started.
 121  */
 122 $test_location = get_location();
 123
 124 ?><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
 125   "http://www.w3.org/TR/1999/REC-html401-19991224/loose.dtd">
 126 <html>
 127 <head>
 128   <meta name="robots" content="noindex,nofollow">
 129   <title>SquirrelMail configtest</title>
 130 </head>
 131 <body>
 132 <h1>SquirrelMail configtest</h1>
 133
 134 <p>This script will try to check some aspects of your SquirrelMail configuration
 135 and point you to errors whereever it can find them. You need to go run <tt>conf.pl</tt>
 136 in the <tt>config/</tt> directory first before you run this script.</p>
 137
 138 <?php
 139
 140 $included = array_map('basename', get_included_files() );
 141 if(!in_array('config.php', $included)) {
 142     if(!file_exists(SM_PATH . 'config/config.php')) {
 143         do_err('Config file '.SM_PATH . 'config/config.php does not exist!<br />'.
 144                 'You need to run <tt>conf.pl</tt> first.');
 145     }
 146     do_err('Could not read '.SM_PATH.'config/config.php! Check file permissions.');
 147 }
 148 if(!in_array('strings.php', $included)) {
 149     do_err('Could not include '.SM_PATH.'functions/strings.php!<br />'.
 150             'Check permissions on that file.');
 151 }
 152
 153 /* Block remote use of script */
 154 if (! $allow_remote_configtest) {
 155     sqGetGlobalVar('REMOTE_ADDR',$client_ip,SQ_SERVER);
 156     sqGetGlobalVar('SERVER_ADDR',$server_ip,SQ_SERVER);
 157
 158     if ((! isset($client_ip) || $client_ip!='127.0.0.1') &&
 159             (! isset($client_ip) || ! isset($server_ip) || $client_ip!=$server_ip)) {
 160         do_err('Enable "Allow remote configtest" option in squirrelmail configuration in order to use this script.');
 161     }
 162 }
 163 /* checking PHP specs */
 164
 165 echo "<p><table>\n<tr><td>SquirrelMail version:</td><td><b>" . $version . "</b></td></tr>\n" .
 166     '<tr><td>Config file version:</td><td><b>' . $config_version . "</b></td></tr>\n" .
 167     '<tr><td>Config file last modified:</td><td><b>' .
 168     date ('d F Y H:i:s', filemtime(SM_PATH . 'config/config.php')) .
 169     "</b></td></tr>\n</table>\n</p>\n\n";
 170
 171 /* check $config_version */
 172 if ($config_version!='1.5.0') {
 173     do_err('Configuration file version does not match required version. Please update your configuration file.');
 174 }
 175
 176 echo "Checking PHP configuration...<br />\n";
 177
 178 if(!check_php_version(4,1,0)) {
 179     do_err('Insufficient PHP version: '. PHP_VERSION . '! Minimum required: 4.1.0');
 180 }
 181
 182 echo $IND . 'PHP version ' . PHP_VERSION . ' OK. (You have: ' . phpversion() . ". Minimum: 4.1.0)<br />\n";
 183 /* test for boolean false and any string that is not equal to 'off' */
 184 if ((bool) ini_get('register_globals') &&
 185     strtolower(ini_get('register_globals'))!='off') {
 186     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);
 187 }
 188 $php_exts = array('session','pcre');
 189 $diff = array_diff($php_exts, get_loaded_extensions());
 190 if(count($diff)) {
 191     do_err('Required PHP extensions missing: '.implode(', ',$diff) );
 192 }
 193
 194 echo $IND . "PHP extensions OK.<br />\n";
 195
 196 /* dangerous php settings */
 197 /**
 198  * mbstring.func_overload allows to replace original string and regexp functions
 199  * with their equivalents from php mbstring extension. It causes problems when
 200  * scripts analyze 8bit strings byte after byte or use 8bit strings in regexp tests.
 201  * Setting can be controlled in php.ini (php 4.2.0), webserver config (php 4.2.0)
 202  * and .htaccess files (php 4.3.5).
 203  */
 204 if (function_exists('mb_internal_encoding') &&
 205     check_php_version(4,2,0) &&
 206     (int)ini_get('mbstring.func_overload')!=0) {
 207     $mb_error='You have enabled mbstring overloading.'
 208         .' It can cause problems with SquirrelMail scripts that rely on single byte string functions.';
 209     do_err($mb_error);
 210 }
 211
 212 /* checking paths */
 213
 214 echo "Checking paths...<br />\n";
 215
 216 if(!file_exists($data_dir)) {
 217     // data_dir is not that important in db_setups.
 218     if (isset($prefs_dsn) && ! empty($prefs_dsn)) {
 219         $data_dir_error = "Data dir ($data_dir) does not exist!\n";
 220         echo $IND .'<font color="red"><b>ERROR:</b></font> ' . $data_dir_error;
 221     } else {
 222         do_err("Data dir ($data_dir) does not exist!");
 223     }
 224 }
 225 // don't check if errors
 226 if(!isset($data_dir_error) && !is_dir($data_dir)) {
 227     if (isset($prefs_dsn) && ! empty($prefs_dsn)) {
 228         $data_dir_error = "Data dir ($data_dir) is not a directory!\n";
 229         echo $IND . '<font color="red"><b>ERROR:</b></font> ' . $data_dir_error;
 230     } else {
 231         do_err("Data dir ($data_dir) is not a directory!");
 232     }
 233 }
 234 // datadir should be executable - but no clean way to test on that
 235 if(!isset($data_dir_error) && !is_writable($data_dir)) {
 236     if (isset($prefs_dsn) && ! empty($prefs_dsn)) {
 237         $data_dir_error = "Data dir ($data_dir) is not writable!\n";
 238         echo $IND . '<font color="red"><b>ERROR:</b></font> ' . $data_dir_error;
 239     } else {
 240         do_err("Data dir ($data_dir) is not writable!");
 241     }
 242 }
 243
 244 if (isset($data_dir_error)) {
 245     echo " Some plugins might need access to data directory.<br />\n";
 246 } else {
 247     // todo_ornot: actually write something and read it back.
 248     echo $IND . "Data dir OK.<br />\n";
 249 }
 250
 251 if($data_dir == $attachment_dir) {
 252     echo $IND . "Attachment dir is the same as data dir.<br />\n";
 253     if (isset($data_dir_error)) {
 254         do_err($data_dir_error);
 255     }
 256 } else {
 257     if(!file_exists($attachment_dir)) {
 258         do_err("Attachment dir ($attachment_dir) does not exist!");
 259     }
 260     if (!is_dir($attachment_dir)) {
 261         do_err("Attachment dir ($attachment_dir) is not a directory!");
 262     }
 263     if (!is_writable($attachment_dir)) {
 264         do_err("I cannot write to attachment dir ($attachment_dir)!");
 265     }
 266     echo $IND . "Attachment dir OK.<br />\n";
 267 }
 268
 269
 270 /* check plugins and themes */
 271 //FIXME: check requirements given in plugin _info() function, such
 272 //       as required PHP extensions, Pear packages, other plugins, SM version, etc
 273 //       see development docs for list of returned info from that function
 274 $bad_plugins = array(
 275         'attachment_common',      // Integrated into SquirrelMail 1.2 core
 276         'auto_prune_sent',        // Obsolete: See Proon Automatic Folder Pruning plugin
 277         'compose_new_window',     // Integrated into SquirrelMail 1.4 core
 278         'delete_move_next',       // Integrated into SquirrelMail 1.5 core
 279         'disk_quota',             // Obsolete: See Check Quota plugin
 280         'email_priority',         // Integrated into SquirrelMail 1.2 core
 281         'emoticons',              // Obsolete: See HTML Mail plugin
 282         'focus_change',           // Integrated into SquirrelMail 1.2 core
 283         'folder_settings',        // Integrated into SquirrelMail 1.5.1 core
 284         'global_sql_addressbook', // Integrated into SquirrelMail 1.4 core
 285         'hancock',                // Not Working: See Random Signature Taglines plugin
 286         'msg_flags',              // Integrated into SquirrelMail 1.5.1 core
 287         'message_source',         // Added to SquirrelMail 1.4 Core Plugins (message_details)
 288         'motd',                   // Integrated into SquirrelMail 1.2 core
 289         'paginator',              // Integrated into SquirrelMail 1.2 core
 290         'printer_friendly',       // Integrated into SquirrelMail 1.2 core
 291         'procfilter',             // Obsolete: See Server Side Filter plugin
 292         'redhat_php_cgi_fix',     // Integrated into SquirrelMail 1.1.1 core
 293         'send_to_semicolon',      // Integrated into SquirrelMail 1.4.1 core
 294         'spamassassin',           // Not working beyond SquirrelMail 1.2.7: See Spamassassin SpamFilter (Frontend) v2 plugin
 295         'sqcalendar',             // Added to SquirrelMail 1.2 Core Plugins (calendar)
 296         'sqclock',                // Integrated into SquirrelMail 1.2 core
 297         'sql_squirrel_logger',    // Obsolete: See Squirrel Logger plugin
 298         'tmda',                   // Obsolete: See TMDA Tools plugin
 299         'vacation',               // Obsolete: See Vacation Local plugin
 300         'view_as_html',           // Integrated into SquirrelMail 1.5.1 core
 301         'xmailer'                 // Integrated into SquirrelMail 1.2 core
 302         );
 303
 304 if (isset($plugins[0])) {
 305     foreach($plugins as $plugin) {
 306         if(!file_exists(SM_PATH .'plugins/'.$plugin)) {
 307             do_err('You have enabled the <i>'.$plugin.'</i> plugin, but I cannot find it.', FALSE);
 308         } elseif (!is_readable(SM_PATH .'plugins/'.$plugin.'/setup.php')) {
 309             do_err('You have enabled the <i>'.$plugin.'</i> plugin, but I cannot read its setup.php file.', FALSE);
 310         } elseif (in_array($plugin, $bad_plugins)) {
 311             do_err('You have enabled the <i>'.$plugin.'</i> plugin, which causes problems with this version of SquirrelMail. Please check the ReleaseNotes or other documentation for more information.', false);
 312         }
 313     }
 314     // load plugin functions
 315     include_once(SM_PATH . 'functions/plugin.php');
 316     // turn on output buffering in order to prevent output of new lines
 317     ob_start();
 318     foreach ($plugins as $name) {
 319         use_plugin($name);
 320     }
 321     // get output and remove whitespace
 322     $output = trim(ob_get_contents());
 323     ob_end_clean();
 324     // if plugins output more than newlines and spacing, stop script execution.
 325     if (!empty($output)) {
 326         $plugin_load_error = 'Some output is produced when plugins are loaded.'
 327             .' Usually it means error. Output said: '.htmlspecialchars($output);
 328         do_err($plugin_load_error);
 329     }
 330     /**
 331      * This hook was added in 1.5.2. Each plugins should print an error
 332      * message and return TRUE if there are any errors in its setup/configuration.
 333      */
 334     $plugin_err = boolean_hook_function('configtest', $null);
 335     if($plugin_err) {
 336         do_err('Some plugin tests failed.');
 337     } else {
 338         echo $IND . "Plugins OK.<br />\n";
 339     }
 340 } else {
 341     echo $IND . "Plugins are not enabled in config.<br />\n";
 342 }
 343 foreach($theme as $thm) {
 344     if(!file_exists($thm['PATH'])) {
 345         do_err('You have enabled the <i>'.$thm['NAME'].'</i> theme but I cannot find it ('.$thm['PATH'].').', FALSE);
 346     } elseif(!is_readable($thm['PATH'])) {
 347         do_err('You have enabled the <i>'.$thm['NAME'].'</i> theme but I cannot read it ('.$thm['PATH'].').', FALSE);
 348     }
 349 }
 350
 351 echo $IND . "Themes OK.<br />\n";
 352
 353 if ( $squirrelmail_default_language != 'en_US' ) {
 354     $loc_path = SM_PATH .'locale/'.$squirrelmail_default_language.'/LC_MESSAGES/squirrelmail.mo';
 355     if( ! file_exists( $loc_path ) ) {
 356         do_err('You have set <i>' . $squirrelmail_default_language .
 357                 '</i> as your default language, but I cannot find this translation (should be '.
 358                 'in <tt>' . $loc_path . '</tt>). Please note that you have to download translations '.
 359                 'separately from the main SquirrelMail package.', FALSE);
 360     } elseif ( ! is_readable( $loc_path ) ) {
 361         do_err('You have set <i>' . $squirrelmail_default_language .
 362                 '</i> as your default language, but I cannot read this translation (file '.
 363                 'in <tt>' . $loc_path . '</tt> unreadable).', FALSE);
 364     } else {
 365         echo $IND . "Default language OK.<br />\n";
 366     }
 367 } else {
 368     echo $IND . "Default language OK.<br />\n";
 369 }
 370
 371 echo $IND . "Base URL detected as: <tt>" . htmlspecialchars($test_location) .
 372     "</tt> (location base " . (empty($config_location_base) ? 'autodetected' : 'set to <tt>' .
 373     htmlspecialchars($config_location_base)."</tt>") . ")<br />\n";
 374
 375 /* check minimal requirements for other security options */
 376
 377 /* imaps or ssmtp */
 378 if($use_smtp_tls == 1 || $use_imap_tls == 1) {
 379     if(!check_php_version(4,3,0)) {
 380         do_err('You need at least PHP 4.3.0 for SMTP/IMAP TLS!');
 381     }
 382     if(!extension_loaded('openssl')) {
 383         do_err('You need the openssl PHP extension to use SMTP/IMAP TLS!');
 384     }
 385 }
 386 /* starttls extensions */
 387 if($use_smtp_tls === 2 || $use_imap_tls === 2) {
 388     if (! function_exists('stream_socket_enable_crypto')) {
 389         do_err('If you want to use STARTTLS extension, you need stream_socket_enable_crypto() function from PHP 5.1.0 and newer.');
 390     }
 391 }
 392 /* digest-md5 */
 393 if ($smtp_auth_mech=='digest-md5' || $imap_auth_mech =='digest-md5') {
 394     if (!extension_loaded('xml')) {
 395         do_err('You need the PHP XML extension to use Digest-MD5 authentication!');
 396     }
 397 }
 398
 399 /* check outgoing mail */
 400
 401 echo "Checking outgoing mail service....<br />\n";
 402
 403 if($useSendmail) {
 404     // is_executable also checks for existance, but we want to be as precise as possible with the errors
 405     if(!file_exists($sendmail_path)) {
 406         do_err("Location of sendmail program incorrect ($sendmail_path)!");
 407     }
 408     if(!is_executable($sendmail_path)) {
 409         do_err("I cannot execute the sendmail program ($sendmail_path)!");
 410     }
 411
 412     echo $IND . "sendmail OK<br />\n";
 413 } else {
 414     $stream = fsockopen( ($use_smtp_tls==1?'tls://':'').$smtpServerAddress, $smtpPort,
 415             $errorNumber, $errorString);
 416     if(!$stream) {
 417         do_err("Error connecting to SMTP server \"$smtpServerAddress:$smtpPort\".".
 418                 "Server error: ($errorNumber) ".htmlspecialchars($errorString));
 419     }
 420
 421     // check for SMTP code; should be 2xx to allow us access
 422     $smtpline = fgets($stream, 1024);
 423     if(((int) $smtpline{0}) > 3) {
 424         do_err("Error connecting to SMTP server. Server error: ".
 425                 htmlspecialchars($smtpline));
 426     }
 427
 428     /* smtp starttls checks */
 429     if ($use_smtp_tls===2) {
 430         // if something breaks, script should close smtp connection on exit.
 431
 432         // say helo
 433         fwrite($stream,"EHLO $client_ip\r\n");
 434
 435         $ehlo=array();
 436         $ehlo_error = false;
 437         while ($line=fgets($stream, 1024)){
 438             if (preg_match("/^250(-|\s)(\S*)\s+(\S.*)/",$line,$match)||
 439                     preg_match("/^250(-|\s)(\S*)\s+/",$line,$match)) {
 440                 if (!isset($match[3])) {
 441                     // simple one word extension
 442                     $ehlo[strtoupper($match[2])]='';
 443                 } else {
 444                     // ehlo-keyword + ehlo-param
 445                     $ehlo[strtoupper($match[2])]=trim($match[3]);
 446                 }
 447                 if ($match[1]==' ') {
 448                     $ret = $line;
 449                     break;
 450                 }
 451             } else {
 452                 //
 453                 $ehlo_error = true;
 454                 $ehlo[]=$line;
 455                 break;
 456             }
 457         }
 458         if ($ehlo_error) {
 459             do_err('SMTP EHLO failed. You need ESMTP support for SMTP STARTTLS');
 460         } elseif (!array_key_exists('STARTTLS',$ehlo)) {
 461             do_err('STARTTLS support is not declared by SMTP server.');
 462         }
 463
 464         fwrite($stream,"STARTTLS\r\n");
 465         $starttls_response=fgets($stream, 1024);
 466         if ($starttls_response[0]!=2) {
 467             $starttls_cmd_err = 'SMTP STARTTLS failed. Server replied: '
 468                 .htmlspecialchars($starttls_response);
 469             do_err($starttls_cmd_err);
 470         } elseif(! stream_socket_enable_crypto($stream,true,STREAM_CRYPTO_METHOD_TLS_CLIENT)) {
 471             do_err('Failed to enable encryption on SMTP STARTTLS connection.');
 472         } else {
 473             echo $IND . "SMTP STARTTLS extension looks OK.<br />\n";
 474         }
 475         // According to RFC we should second ehlo call here.
 476     }
 477
 478     fputs($stream, 'QUIT');
 479     fclose($stream);
 480     echo $IND . 'SMTP server OK (<tt><small>'.
 481             trim(htmlspecialchars($smtpline))."</small></tt>)<br />\n";
 482
 483     /* POP before SMTP */
 484     if($pop_before_smtp) {
 485         $stream = fsockopen($smtpServerAddress, 110, $err_no, $err_str);
 486         if (!$stream) {
 487             do_err("Error connecting to POP Server ($smtpServerAddress:110) "
 488                 . $err_no . ' : ' . htmlspecialchars($err_str));
 489         }
 490
 491         $tmp = fgets($stream, 1024);
 492         if (substr($tmp, 0, 3) != '+OK') {
 493             do_err("Error connecting to POP Server ($smtpServerAddress:110)"
 494                 . ' '.htmlspecialchars($tmp));
 495         }
 496         fputs($stream, 'QUIT');
 497         fclose($stream);
 498         echo $IND . "POP-before-SMTP OK.<br />\n";
 499     }
 500 }
 501
 502 /**
 503  * Check the IMAP server
 504  */
 505 echo "Checking IMAP service....<br />\n";
 506
 507 /** Can we open a connection? */
 508 $stream = fsockopen( ($use_imap_tls==1?'tls://':'').$imapServerAddress, $imapPort,
 509         $errorNumber, $errorString);
 510 if(!$stream) {
 511     do_err("Error connecting to IMAP server \"$imapServerAddress:$imapPort\".".
 512             "Server error: ($errorNumber) ".
 513             htmlspecialchars($errorString));
 514 }
 515
 516 /** Is the first response 'OK'? */
 517 $imapline = fgets($stream, 1024);
 518 if(substr($imapline, 0,4) != '* OK') {
 519     do_err('Error connecting to IMAP server. Server error: '.
 520             htmlspecialchars($imapline));
 521 }
 522
 523 echo $IND . 'IMAP server ready (<tt><small>'.
 524     htmlspecialchars(trim($imapline))."</small></tt>)<br />\n";
 525
 526 /** Check capabilities */
 527 fputs($stream, "A001 CAPABILITY\r\n");
 528 $capline = '';
 529 while ($line=fgets($stream, 1024)){
 530     if (preg_match("/A001.*/",$line)) {
 531         break;
 532     } else {
 533         $capline.=$line;
 534     }
 535 }
 536
 537 /* don't display capabilities before STARTTLS */
 538 if ($use_imap_tls===2 && stristr($capline, 'STARTTLS') === false) {
 539     do_err('Your server doesn\'t support STARTTLS.');
 540 } elseif($use_imap_tls===2) {
 541     /* try starting starttls */
 542     fwrite($stream,"A002 STARTTLS\r\n");
 543     $starttls_line=fgets($stream, 1024);
 544     if (! preg_match("/^A002 OK.*/i",$starttls_line)) {
 545         $imap_starttls_err = 'IMAP STARTTLS failed. Server replied: '
 546             .htmlspecialchars($starttls_line);
 547         do_err($imap_starttls_err);
 548     } elseif (! stream_socket_enable_crypto($stream,true,STREAM_CRYPTO_METHOD_TLS_CLIENT)) {
 549         do_err('Failed to enable encryption on IMAP connection.');
 550     } else {
 551         echo $IND . "IMAP STARTTLS extension looks OK.<br />\n";
 552     }
 553
 554     // get new capability line
 555     fwrite($stream,"A003 CAPABILITY\r\n");
 556     $capline='';
 557     while ($line=fgets($stream, 1024)){
 558         if (preg_match("/A003.*/",$line)) {
 559             break;
 560         } else {
 561             $capline.=$line;
 562         }
 563     }
 564 }
 565
 566 echo $IND . 'Capabilities: <tt>'.htmlspecialchars($capline)."</tt><br />\n";
 567
 568 if($imap_auth_mech == 'login' && stristr($capline, 'LOGINDISABLED') !== FALSE) {
 569     do_err('Your server doesn\'t allow plaintext logins. '.
 570             'Try enabling another authentication mechanism like CRAM-MD5, DIGEST-MD5 or TLS-encryption '.
 571             'in the SquirrelMail configuration.', FALSE);
 572 }
 573
 574 if (stristr($capline, 'XMAGICTRASH') !== false) {
 575     $magic_trash = 'It looks like IMAP_MOVE_EXPUNGE_TO_TRASH option is turned on '
 576         .'in your Courier IMAP configuration. Courier does not provide tools that '
 577         .'allow to detect folder used for Trash or commands are not documented. '
 578         .'SquirrelMail can\'t detect special trash folder. SquirrelMail manages '
 579         .'all message deletion or move operations internally and '
 580         .'IMAP_MOVE_EXPUNGE_TO_TRASH option can cause errors in message and '
 581         .'folder management operations. Please turn off IMAP_MOVE_EXPUNGE_TO_TRASH '
 582         .'option in Courier imapd configuration.';
 583     do_err($magic_trash,false);
 584 }
 585
 586 /* add warning about IMAP delivery */
 587 if (stristr($capline, 'XCOURIEROUTBOX') !== false) {
 588     $courier_outbox = 'OUTBOX setting is enabled in your Courier imapd '
 589         .'configuration. SquirrelMail uses standard SMTP protocol or sendmail '
 590         .'binary to send emails. Courier IMAP delivery method is not supported'
 591         .' and can create duplicate email messages.';
 592     do_err($courier_outbox,false);
 593 }
 594
 595 /** OK, close connection */
 596 fputs($stream, "A004 LOGOUT\r\n");
 597 fclose($stream);
 598
 599 echo "Checking internationalization (i18n) settings...<br />\n";
 600 echo "$IND gettext - ";
 601 if (function_exists('gettext')) {
 602     echo 'Gettext functions are available.'
 603         .' On some systems you must have appropriate system locales compiled.'
 604         ."<br />\n";
 605
 606     /* optional setlocale() tests. Should work only on glibc systems. */
 607     if (sqgetGlobalVar('testlocales',$testlocales,SQ_GET)) {
 608         include_once(SM_PATH . 'include/languages.php');
 609         echo $IND . $IND . 'Testing translations:<br>';
 610         foreach ($languages as $lang_code => $lang_data) {
 611             /* don't test aliases */
 612             if (isset($lang_data['NAME'])) {
 613                 /* locale can be $lang_code or $lang_data['LOCALE'] */
 614                 if (isset($lang_data['LOCALE'])) {
 615                     $setlocale = $lang_data['LOCALE'];
 616                 } else {
 617                     $setlocale = $lang_code;
 618                 }
 619                 /* prepare information about tested locales */
 620                 if (is_array($setlocale)) {
 621                     $display_locale = implode(', ',$setlocale);
 622                     $locale_count = count($setlocale);
 623                 } else {
 624                     $display_locale = $setlocale;
 625                     $locale_count = 1;
 626                 }
 627                 $tested_locales_msg = 'Tested '.htmlspecialchars($display_locale).' '
 628                     .($locale_count>1 ? 'locales':'locale'). '.';
 629
 630                 echo $IND . $IND .$IND . $lang_data['NAME'].' (' .$lang_code. ') - ';
 631                 $retlocale = sq_setlocale(LC_ALL,$setlocale);
 632                 if (is_bool($retlocale)) {
 633                     echo '<font color="red">unsupported</font>. ';
 634                     echo $tested_locales_msg;
 635                 } else {
 636                     echo 'supported. '
 637                         .$tested_locales_msg
 638                         .' setlocale() returned "'.htmlspecialchars($retlocale).'"';
 639                 }
 640                 echo "<br />\n";
 641             }
 642         }
 643         echo $IND . $IND . '<a href="configtest.php">Don\'t test translations</a>';
 644     } else {
 645         echo $IND . $IND . '<a href="configtest.php?testlocales=1">Test translations</a>. '
 646             .'This test is not accurate and might work only on some systems.'
 647             ."\n";
 648     }
 649     echo "<br />\n";
 650     /* end of translation tests */
 651 } else {
 652     echo 'Gettext functions are unavailable.'
 653         .' SquirrelMail will use slower internal gettext functions.'
 654         ."<br />\n";
 655 }
 656 echo "$IND mbstring - ";
 657 if (function_exists('mb_detect_encoding')) {
 658     echo "Mbstring functions are available.<br />\n";
 659 } else {
 660     echo 'Mbstring functions are unavailable.'
 661         ." Japanese translation won't work.<br />\n";
 662 }
 663 echo "$IND recode - ";
 664 if (function_exists('recode')) {
 665     echo "Recode functions are available.<br />\n";
 666 } elseif (isset($use_php_recode) && $use_php_recode) {
 667     echo "Recode functions are unavailable.<br />\n";
 668     do_err('Your configuration requires recode support, but recode support is missing.');
 669 } else {
 670     echo "Recode functions are unavailable.<br />\n";
 671 }
 672 echo "$IND iconv - ";
 673 if (function_exists('iconv')) {
 674     echo "Iconv functions are available.<br />\n";
 675 } elseif (isset($use_php_iconv) && $use_php_iconv) {
 676     echo "Iconv functions are unavailable.<br />\n";
 677     do_err('Your configuration requires iconv support, but iconv support is missing.');
 678 } else {
 679     echo "Iconv functions are unavailable.<br />\n";
 680 }
 681 // same test as in include/init.php + date_default_timezone_set check
 682 echo "$IND timezone - ";
 683 if ( (!ini_get('safe_mode')) || function_exists('date_default_timezone_set') ||
 684         !strcmp(ini_get('safe_mode_allowed_env_vars'),'') ||
 685         preg_match('/^([\w_]+,)*TZ/', ini_get('safe_mode_allowed_env_vars')) ) {
 686     echo "Webmail users can change their time zone settings. \n";
 687 } else {
 688     echo "Webmail users can't change their time zone settings. \n";
 689 }
 690 if (isset($_ENV['TZ'])) {
 691     echo 'Default time zone is '.htmlspecialchars($_ENV['TZ']);
 692 } else {
 693     echo 'Current time zone is '.date('T');
 694 }
 695 echo ".<br />\n";
 696
 697 // Pear DB tests
 698 echo "Checking database functions...<br />\n";
 699 if($addrbook_dsn || $prefs_dsn || $addrbook_global_dsn) {
 700     @include_once('DB.php');
 701     if (class_exists('DB')) {
 702         echo "$IND PHP Pear DB support is present.<br />\n";
 703         $db_functions=array(
 704                 'dbase' => 'dbase_open',
 705                 'fbsql' => 'fbsql_connect',
 706                 'interbase' => 'ibase_connect',
 707                 'informix' => 'ifx_connect',
 708                 'msql' => 'msql_connect',
 709                 'mssql' => 'mssql_connect',
 710                 'mysql' => 'mysql_connect',
 711                 'mysqli' => 'mysqli_connect',
 712                 'oci8' => 'ocilogon',
 713                 'odbc' => 'odbc_connect',
 714                 'pgsql' => 'pg_connect',
 715                 'sqlite' => 'sqlite_open',
 716                 'sybase' => 'sybase_connect'
 717                 );
 718
 719         $dsns = array();
 720         if($prefs_dsn) {
 721             $dsns['preferences'] = $prefs_dsn;
 722         }
 723         if($addrbook_dsn) {
 724             $dsns['addressbook'] = $addrbook_dsn;
 725         }
 726         if($addrbook_global_dsn) {
 727             $dsns['global addressbook'] = $addrbook_global_dsn;
 728         }
 729
 730         foreach($dsns as $type => $dsn) {
 731             $aDsn = explode(':', $dsn);
 732             $dbtype = array_shift($aDsn);
 733             if(isset($db_functions[$dbtype]) && function_exists($db_functions[$dbtype])) {
 734                 echo "$IND$dbtype database support present.<br />\n";
 735
 736                 // now, test this interface:
 737
 738                 $dbh = DB::connect($dsn, true);
 739                 if (DB::isError($dbh)) {
 740                     do_err('Database error: '. htmlspecialchars(DB::errorMessage($dbh)) .
 741                             ' in ' .$type .' DSN.');
 742                 }
 743                 $dbh->disconnect();
 744                 echo "$IND$type database connect successful.<br />\n";
 745
 746             } else {
 747                 do_err($dbtype.' database support not present!');
 748             }
 749         }
 750     } else {
 751         $db_error='Required PHP PEAR DB support is not available.'
 752             .' Is PEAR installed and is the include path set correctly to find <tt>DB.php</tt>?'
 753             .' The include path is now:<tt>' . ini_get('include_path') . '</tt>.';
 754         do_err($db_error);
 755     }
 756 } else {
 757     echo $IND."not using database functionality.<br />\n";
 758 }
 759
 760 // LDAP DB tests
 761 echo "Checking LDAP functions...<br />\n";
 762 if( empty($ldap_server) ) {
 763     echo $IND."not using LDAP functionality.<br />\n";
 764 } else {
 765     if ( !function_exists('ldap_connect') ) {
 766         do_err('Required LDAP support is not available.');
 767     } else {
 768         echo "$IND LDAP support present.<br />\n";
 769         foreach ( $ldap_server as $param ) {
 770
 771             $linkid = @ldap_connect($param['host'], (empty($param['port']) ? 389 : $param['port']) );
 772
 773             if ( $linkid ) {
 774                 echo "$IND LDAP connect to ".$param['host']." successful: ".$linkid."<br />\n";
 775
 776                 if ( !empty($param['protocol']) &&
 777                         !ldap_set_option($linkid, LDAP_OPT_PROTOCOL_VERSION, $param['protocol']) ) {
 778                     do_err('Unable to set LDAP protocol');
 779                 }
 780
 781                 if ( empty($param['binddn']) ) {
 782                     $bind = @ldap_bind($linkid);
 783                 } else {
 784                     $bind = @ldap_bind($param['binddn'], $param['bindpw']);
 785                 }
 786
 787                 if ( $bind ) {
 788                     echo "$IND LDAP Bind Successful <br />";
 789                 } else {
 790                     do_err('Unable to Bind to LDAP Server');
 791                 }
 792
 793                 @ldap_close($linkid);
 794             } else {
 795                 do_err('Connection to LDAP failed');
 796             }
 797         }
 798     }
 799 }
 800
 801 echo '<hr width="75%" align="center">';
 802 echo '<h2 align="center">Summary</h2>';
 803 $footer = '<hr width="75%" align="center">';
 804 if ($warnings) {
 805     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>';
 806     echo $footer;
 807 } else {
 808     print <<< EOF
 809 <p>Congratulations, your SquirrelMail setup looks fine to me!</p>
 810
 811 <p><a href="login.php">Login now</a></p>
 812
 813 </body>
 814 </html>
 815 EOF;
 816     echo $footer;
 817 }
 818 ?>