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 . 'include/constants.php');
  85 require(SM_PATH . 'functions/global.php');
  86 require(SM_PATH . 'functions/strings.php');
  87 $SQM_INTERNAL_VERSION = preg_split('/\./', SM_VERSION, 3);
  88 $SQM_INTERNAL_VERSION[2] = intval($SQM_INTERNAL_VERSION[2]);
  89
  90 /** set default value in order to block remote access */
  91 $allow_remote_configtest=false;
  92
  93 /** Load all configuration files before output begins */
  94
  95 /* load default configuration */
  96 require(SM_PATH . 'config/config_default.php');
  97 /* reset arrays in default configuration */
  98 $ldap_server = array();
  99 $plugins = array();
 100 $fontsets = array();
 101 $theme = array();
 102 $theme[0]['PATH'] = SM_PATH . 'themes/default_theme.php';
 103 $theme[0]['NAME'] = 'Default';
 104 $aTemplateSet = array();
 105 $aTemplateSet[0]['ID'] = 'default';
 106 $aTemplateSet[0]['NAME'] = 'Default';
 107 /* load site configuration */
 108 if (file_exists(SM_PATH . 'config/config.php')) {
 109     require(SM_PATH . 'config/config.php');
 110 }
 111 /* load local configuration overrides */
 112 if (file_exists(SM_PATH . 'config/config_local.php')) {
 113     require(SM_PATH . 'config/config_local.php');
 114 }
 115
 116 /** Load plugins */
 117 global $disable_plugins;
 118 $squirrelmail_plugin_hooks = array();
 119 if (!$disable_plugins && file_exists(SM_PATH . 'config/plugin_hooks.php')) {
 120     require(SM_PATH . 'config/plugin_hooks.php');
 121 }
 122
 123 /** Warning counter */
 124 $warnings = 0;
 125
 126 /** indent */
 127 $IND = str_repeat('&nbsp;',4);
 128
 129 /**
 130  * get_location starts session and must be run before output is started.
 131  */
 132 $test_location = get_location();
 133
 134 ?><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
 135   "http://www.w3.org/TR/1999/REC-html401-19991224/loose.dtd">
 136 <html>
 137 <head>
 138   <meta name="robots" content="noindex,nofollow">
 139   <title>SquirrelMail configtest</title>
 140 </head>
 141 <body>
 142 <h1>SquirrelMail configtest</h1>
 143
 144 <p>This script will try to check some aspects of your SquirrelMail configuration
 145 and point you to errors whereever it can find them. You need to go run <tt>conf.pl</tt>
 146 in the <tt>config/</tt> directory first before you run this script.</p>
 147
 148 <?php
 149
 150 $included = array_map('basename', get_included_files() );
 151 if(!in_array('config.php', $included)) {
 152     if(!file_exists(SM_PATH . 'config/config.php')) {
 153         do_err('Config file '.SM_PATH . 'config/config.php does not exist!<br />'.
 154                 'You need to run <tt>conf.pl</tt> first.');
 155     }
 156     do_err('Could not read '.SM_PATH.'config/config.php! Check file permissions.');
 157 }
 158 if(!in_array('strings.php', $included)) {
 159     do_err('Could not include '.SM_PATH.'functions/strings.php!<br />'.
 160             'Check permissions on that file.');
 161 }
 162
 163 /* Block remote use of script */
 164 if (! $allow_remote_configtest) {
 165     sqGetGlobalVar('REMOTE_ADDR',$client_ip,SQ_SERVER);
 166     sqGetGlobalVar('SERVER_ADDR',$server_ip,SQ_SERVER);
 167
 168     if ((! isset($client_ip) || $client_ip!='127.0.0.1') &&
 169             (! isset($client_ip) || ! isset($server_ip) || $client_ip!=$server_ip)) {
 170         do_err('Enable "Allow remote configtest" option in squirrelmail configuration in order to use this script.');
 171     }
 172 }
 173 /* checking PHP specs */
 174
 175 echo "<p><table>\n<tr><td>SquirrelMail version:</td><td><b>" . SM_VERSION . "</b></td></tr>\n" .
 176     '<tr><td>Config file version:</td><td><b>' . $config_version . "</b></td></tr>\n" .
 177     '<tr><td>Config file last modified:</td><td><b>' .
 178     date ('d F Y H:i:s', filemtime(SM_PATH . 'config/config.php')) .
 179     "</b></td></tr>\n</table>\n</p>\n\n";
 180
 181 /* check $config_version */
 182 if ($config_version!='1.5.0') {
 183     do_err('Configuration file version does not match required version. Please update your configuration file.');
 184 }
 185
 186 echo "Checking PHP configuration...<br />\n";
 187
 188 if(!check_php_version(4,1,0)) {
 189     do_err('Insufficient PHP version: '. PHP_VERSION . '! Minimum required: 4.1.0');
 190 }
 191
 192 echo $IND . 'PHP version ' . PHP_VERSION . ' OK. (You have: ' . phpversion() . ". Minimum: 4.1.0)<br />\n";
 193 /* test for boolean false and any string that is not equal to 'off' */
 194 if ((bool) ini_get('register_globals') &&
 195     strtolower(ini_get('register_globals'))!='off') {
 196     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);
 197 }
 198 $php_exts = array('session','pcre');
 199 $diff = array_diff($php_exts, get_loaded_extensions());
 200 if(count($diff)) {
 201     do_err('Required PHP extensions missing: '.implode(', ',$diff) );
 202 }
 203
 204 echo $IND . "PHP extensions OK.<br />\n";
 205
 206 /* dangerous php settings */
 207 /**
 208  * mbstring.func_overload allows to replace original string and regexp functions
 209  * with their equivalents from php mbstring extension. It causes problems when
 210  * scripts analyze 8bit strings byte after byte or use 8bit strings in regexp tests.
 211  * Setting can be controlled in php.ini (php 4.2.0), webserver config (php 4.2.0)
 212  * and .htaccess files (php 4.3.5).
 213  */
 214 if (function_exists('mb_internal_encoding') &&
 215     check_php_version(4,2,0) &&
 216     (int)ini_get('mbstring.func_overload')!=0) {
 217     $mb_error='You have enabled mbstring overloading.'
 218         .' It can cause problems with SquirrelMail scripts that rely on single byte string functions.';
 219     do_err($mb_error);
 220 }
 221
 222 /**
 223  * Do not use SquirrelMail with magic_quotes_* on.
 224  */
 225 if ( get_magic_quotes_runtime() || get_magic_quotes_gpc() ||
 226     ( (bool) ini_get('magic_quotes_sybase') && ini_get('magic_quotes_sybase') != 'off' )
 227     ) {
 228     $magic_quotes_warning='You have enabled any one of <tt>magic_quotes_runtime</tt>, '
 229         .'<tt>magic_quotes_gpc</tt> or <tt>magic_quotes_sybase</tt> in your PHP '
 230         .'configuration. We recommend all those settings to be off. SquirrelMail '
 231         .'may work with them on, but when experiencing stray backslashes in your mail '
 232         .'or other strange behaviour, it may be advisable to turn them off.';
 233     do_err($magic_quotes_warning,false);
 234 }
 235
 236
 237 /* checking paths */
 238
 239 echo "Checking paths...<br />\n";
 240
 241 if(!file_exists($data_dir)) {
 242     // data_dir is not that important in db_setups.
 243     if (isset($prefs_dsn) && ! empty($prefs_dsn)) {
 244         $data_dir_error = "Data dir ($data_dir) does not exist!\n";
 245         echo $IND .'<font color="red"><b>ERROR:</b></font> ' . $data_dir_error;
 246     } else {
 247         do_err("Data dir ($data_dir) does not exist!");
 248     }
 249 }
 250 // don't check if errors
 251 if(!isset($data_dir_error) && !is_dir($data_dir)) {
 252     if (isset($prefs_dsn) && ! empty($prefs_dsn)) {
 253         $data_dir_error = "Data dir ($data_dir) is not a directory!\n";
 254         echo $IND . '<font color="red"><b>ERROR:</b></font> ' . $data_dir_error;
 255     } else {
 256         do_err("Data dir ($data_dir) is not a directory!");
 257     }
 258 }
 259 // datadir should be executable - but no clean way to test on that
 260 if(!isset($data_dir_error) && !is_writable($data_dir)) {
 261     if (isset($prefs_dsn) && ! empty($prefs_dsn)) {
 262         $data_dir_error = "Data dir ($data_dir) is not writable!\n";
 263         echo $IND . '<font color="red"><b>ERROR:</b></font> ' . $data_dir_error;
 264     } else {
 265         do_err("Data dir ($data_dir) is not writable!");
 266     }
 267 }
 268
 269 if (isset($data_dir_error)) {
 270     echo " Some plugins might need access to data directory.<br />\n";
 271 } else {
 272     // todo_ornot: actually write something and read it back.
 273     echo $IND . "Data dir OK.<br />\n";
 274 }
 275
 276 if($data_dir == $attachment_dir) {
 277     echo $IND . "Attachment dir is the same as data dir.<br />\n";
 278     if (isset($data_dir_error)) {
 279         do_err($data_dir_error);
 280     }
 281 } else {
 282     if(!file_exists($attachment_dir)) {
 283         do_err("Attachment dir ($attachment_dir) does not exist!");
 284     }
 285     if (!is_dir($attachment_dir)) {
 286         do_err("Attachment dir ($attachment_dir) is not a directory!");
 287     }
 288     if (!is_writable($attachment_dir)) {
 289         do_err("I cannot write to attachment dir ($attachment_dir)!");
 290     }
 291     echo $IND . "Attachment dir OK.<br />\n";
 292 }
 293
 294
 295 echo "Checking plugins...<br />\n";
 296
 297 /* check plugins and themes */
 298 //FIXME: check requirements given in plugin _info() function, such
 299 //       as required PHP extensions, Pear packages, other plugins, SM version, etc
 300 //       see development docs for list of returned info from that function
 301 $bad_plugins = array(
 302         'attachment_common',      // Integrated into SquirrelMail 1.2 core
 303         'auto_prune_sent',        // Obsolete: See Proon Automatic Folder Pruning plugin
 304         'compose_new_window',     // Integrated into SquirrelMail 1.4 core
 305         'delete_move_next',       // Integrated into SquirrelMail 1.5 core
 306         'disk_quota',             // Obsolete: See Check Quota plugin
 307         'email_priority',         // Integrated into SquirrelMail 1.2 core
 308         'emoticons',              // Obsolete: See HTML Mail plugin
 309         'focus_change',           // Integrated into SquirrelMail 1.2 core
 310         'folder_settings',        // Integrated into SquirrelMail 1.5.1 core
 311         'global_sql_addressbook', // Integrated into SquirrelMail 1.4 core
 312         'hancock',                // Not Working: See Random Signature Taglines plugin
 313         'msg_flags',              // Integrated into SquirrelMail 1.5.1 core
 314         'message_source',         // Added to SquirrelMail 1.4 Core Plugins (message_details)
 315         'motd',                   // Integrated into SquirrelMail 1.2 core
 316         'paginator',              // Integrated into SquirrelMail 1.2 core
 317         'printer_friendly',       // Integrated into SquirrelMail 1.2 core
 318         'procfilter',             // Obsolete: See Server Side Filter plugin
 319         'redhat_php_cgi_fix',     // Integrated into SquirrelMail 1.1.1 core
 320         'send_to_semicolon',      // Integrated into SquirrelMail 1.4.1 core
 321         'spamassassin',           // Not working beyond SquirrelMail 1.2.7: See Spamassassin SpamFilter (Frontend) v2 plugin
 322         'sqcalendar',             // Added to SquirrelMail 1.2 Core Plugins (calendar)
 323         'sqclock',                // Integrated into SquirrelMail 1.2 core
 324         'sql_squirrel_logger',    // Obsolete: See Squirrel Logger plugin
 325         'tmda',                   // Obsolete: See TMDA Tools plugin
 326         'vacation',               // Obsolete: See Vacation Local plugin
 327         'view_as_html',           // Integrated into SquirrelMail 1.5.1 core
 328         'xmailer'                 // Integrated into SquirrelMail 1.2 core
 329         );
 330
 331 if (isset($plugins[0])) {
 332     foreach($plugins as $plugin) {
 333         if(!file_exists(SM_PATH .'plugins/'.$plugin)) {
 334             do_err('You have enabled the <i>'.$plugin.'</i> plugin, but I cannot find it.', FALSE);
 335         } elseif (!is_readable(SM_PATH .'plugins/'.$plugin.'/setup.php')) {
 336             do_err('You have enabled the <i>'.$plugin.'</i> plugin, but I cannot read its setup.php file.', FALSE);
 337         } elseif (in_array($plugin, $bad_plugins)) {
 338             do_err('You have enabled the <i>'.$plugin.'</i> plugin, which causes problems with this version of SquirrelMail. Please check the ReleaseNotes or other documentation for more information.', false);
 339         }
 340     }
 341     // load plugin functions
 342     include_once(SM_PATH . 'functions/plugin.php');
 343     // turn on output buffering in order to prevent output of new lines
 344     ob_start();
 345     foreach ($plugins as $name) {
 346         use_plugin($name);
 347     }
 348     // get output and remove whitespace
 349     $output = trim(ob_get_contents());
 350     ob_end_clean();
 351     // if plugins output more than newlines and spacing, stop script execution.
 352     if (!empty($output)) {
 353         $plugin_load_error = 'Some output is produced when plugins are loaded. Usually this means there is an error in one of the plugin setup or configuration files. The output was: '.htmlspecialchars($output);
 354         do_err($plugin_load_error);
 355     }
 356     /**
 357      * Print plugin versions
 358      */
 359     echo $IND . "Plugin versions...<br />\n";
 360     foreach ($plugins as $name) {
 361         $plugin_version = get_plugin_version($name);
 362         if (!empty($plugin_version))
 363             echo $IND . $IND . $name . ' ' . $plugin_version . "<br />\n";
 364
 365         // check if this plugin has any other plugin
 366         // dependencies and if they are satisfied
 367         //
 368         $failed_dependencies = check_plugin_dependencies($name);
 369         if (is_array($failed_dependencies)) {
 370             $missing_plugins = '';
 371             foreach ($failed_dependencies as $depend_name => $depend_version) {
 372                 $missing_plugins .= ', ' . $depend_name . ' (version ' . $depend_version . ')';
 373             }
 374             do_err($name . ' is missing some dependencies: ' . trim($missing_plugins, ', '), FALSE);
 375         }
 376
 377     }
 378     /**
 379      * This hook was added in 1.5.2 and 1.4.10. Each plugins should print an error
 380      * message and return TRUE if there are any errors in its setup/configuration.
 381      */
 382     $plugin_err = boolean_hook_function('configtest', $null, 1);
 383     if($plugin_err) {
 384         do_err('Some plugin tests failed.');
 385     } else {
 386         echo $IND . "Plugins OK.<br />\n";
 387     }
 388 } else {
 389     echo $IND . "Plugins are not enabled in config.<br />\n";
 390 }
 391 foreach($theme as $thm) {
 392     if(!file_exists($thm['PATH'])) {
 393         do_err('You have enabled the <i>'.$thm['NAME'].'</i> theme but I cannot find it ('.$thm['PATH'].').', FALSE);
 394     } elseif(!is_readable($thm['PATH'])) {
 395         do_err('You have enabled the <i>'.$thm['NAME'].'</i> theme but I cannot read it ('.$thm['PATH'].').', FALSE);
 396     }
 397 }
 398
 399 echo $IND . "Themes OK.<br />\n";
 400
 401 if ( $squirrelmail_default_language != 'en_US' ) {
 402     $loc_path = SM_PATH .'locale/'.$squirrelmail_default_language.'/LC_MESSAGES/squirrelmail.mo';
 403     if( ! file_exists( $loc_path ) ) {
 404         do_err('You have set <i>' . $squirrelmail_default_language .
 405                 '</i> as your default language, but I cannot find this translation (should be '.
 406                 'in <tt>' . $loc_path . '</tt>). Please note that you have to download translations '.
 407                 'separately from the main SquirrelMail package.', FALSE);
 408     } elseif ( ! is_readable( $loc_path ) ) {
 409         do_err('You have set <i>' . $squirrelmail_default_language .
 410                 '</i> as your default language, but I cannot read this translation (file '.
 411                 'in <tt>' . $loc_path . '</tt> unreadable).', FALSE);
 412     } else {
 413         echo $IND . "Default language OK.<br />\n";
 414     }
 415 } else {
 416     echo $IND . "Default language OK.<br />\n";
 417 }
 418
 419 echo $IND . "Base URL detected as: <tt>" . htmlspecialchars($test_location) .
 420     "</tt> (location base " . (empty($config_location_base) ? 'autodetected' : 'set to <tt>' .
 421     htmlspecialchars($config_location_base)."</tt>") . ")<br />\n";
 422
 423 /* check minimal requirements for other security options */
 424
 425 /* imaps or ssmtp */
 426 if($use_smtp_tls == 1 || $use_imap_tls == 1) {
 427     if(!check_php_version(4,3,0)) {
 428         do_err('You need at least PHP 4.3.0 for SMTP/IMAP TLS!');
 429     }
 430     if(!extension_loaded('openssl')) {
 431         do_err('You need the openssl PHP extension to use SMTP/IMAP TLS!');
 432     }
 433 }
 434 /* starttls extensions */
 435 if($use_smtp_tls === 2 || $use_imap_tls === 2) {
 436     if (! function_exists('stream_socket_enable_crypto')) {
 437         do_err('If you want to use STARTTLS extension, you need stream_socket_enable_crypto() function from PHP 5.1.0 and newer.');
 438     }
 439 }
 440 /* digest-md5 */
 441 if ($smtp_auth_mech=='digest-md5' || $imap_auth_mech =='digest-md5') {
 442     if (!extension_loaded('xml')) {
 443         do_err('You need the PHP XML extension to use Digest-MD5 authentication!');
 444     }
 445 }
 446
 447 /* check outgoing mail */
 448
 449 echo "Checking outgoing mail service....<br />\n";
 450
 451 if($useSendmail) {
 452     // is_executable also checks for existance, but we want to be as precise as possible with the errors
 453     if(!file_exists($sendmail_path)) {
 454         do_err("Location of sendmail program incorrect ($sendmail_path)!");
 455     }
 456     if(!is_executable($sendmail_path)) {
 457         do_err("I cannot execute the sendmail program ($sendmail_path)!");
 458     }
 459
 460     echo $IND . "sendmail OK<br />\n";
 461 } else {
 462     $stream = fsockopen( ($use_smtp_tls==1?'tls://':'').$smtpServerAddress, $smtpPort,
 463             $errorNumber, $errorString);
 464     if(!$stream) {
 465         do_err("Error connecting to SMTP server \"$smtpServerAddress:$smtpPort\".".
 466                 "Server error: ($errorNumber) ".htmlspecialchars($errorString));
 467     }
 468
 469     // check for SMTP code; should be 2xx to allow us access
 470     $smtpline = fgets($stream, 1024);
 471     if(((int) $smtpline{0}) > 3) {
 472         do_err("Error connecting to SMTP server. Server error: ".
 473                 htmlspecialchars($smtpline));
 474     }
 475
 476     /* smtp starttls checks */
 477     if ($use_smtp_tls===2) {
 478         // if something breaks, script should close smtp connection on exit.
 479
 480         // say helo
 481         fwrite($stream,"EHLO $client_ip\r\n");
 482
 483         $ehlo=array();
 484         $ehlo_error = false;
 485         while ($line=fgets($stream, 1024)){
 486             if (preg_match("/^250(-|\s)(\S*)\s+(\S.*)/",$line,$match)||
 487                     preg_match("/^250(-|\s)(\S*)\s+/",$line,$match)) {
 488                 if (!isset($match[3])) {
 489                     // simple one word extension
 490                     $ehlo[strtoupper($match[2])]='';
 491                 } else {
 492                     // ehlo-keyword + ehlo-param
 493                     $ehlo[strtoupper($match[2])]=trim($match[3]);
 494                 }
 495                 if ($match[1]==' ') {
 496                     $ret = $line;
 497                     break;
 498                 }
 499             } else {
 500                 //
 501                 $ehlo_error = true;
 502                 $ehlo[]=$line;
 503                 break;
 504             }
 505         }
 506         if ($ehlo_error) {
 507             do_err('SMTP EHLO failed. You need ESMTP support for SMTP STARTTLS');
 508         } elseif (!array_key_exists('STARTTLS',$ehlo)) {
 509             do_err('STARTTLS support is not declared by SMTP server.');
 510         }
 511
 512         fwrite($stream,"STARTTLS\r\n");
 513         $starttls_response=fgets($stream, 1024);
 514         if ($starttls_response[0]!=2) {
 515             $starttls_cmd_err = 'SMTP STARTTLS failed. Server replied: '
 516                 .htmlspecialchars($starttls_response);
 517             do_err($starttls_cmd_err);
 518         } elseif(! stream_socket_enable_crypto($stream,true,STREAM_CRYPTO_METHOD_TLS_CLIENT)) {
 519             do_err('Failed to enable encryption on SMTP STARTTLS connection.');
 520         } else {
 521             echo $IND . "SMTP STARTTLS extension looks OK.<br />\n";
 522         }
 523         // According to RFC we should second ehlo call here.
 524     }
 525
 526     fputs($stream, 'QUIT');
 527     fclose($stream);
 528     echo $IND . 'SMTP server OK (<tt><small>'.
 529             trim(htmlspecialchars($smtpline))."</small></tt>)<br />\n";
 530
 531     /* POP before SMTP */
 532     if($pop_before_smtp) {
 533         $stream = fsockopen($smtpServerAddress, 110, $err_no, $err_str);
 534         if (!$stream) {
 535             do_err("Error connecting to POP Server ($smtpServerAddress:110) "
 536                 . $err_no . ' : ' . htmlspecialchars($err_str));
 537         }
 538
 539         $tmp = fgets($stream, 1024);
 540         if (substr($tmp, 0, 3) != '+OK') {
 541             do_err("Error connecting to POP Server ($smtpServerAddress:110)"
 542                 . ' '.htmlspecialchars($tmp));
 543         }
 544         fputs($stream, 'QUIT');
 545         fclose($stream);
 546         echo $IND . "POP-before-SMTP OK.<br />\n";
 547     }
 548 }
 549
 550 /**
 551  * Check the IMAP server
 552  */
 553 echo "Checking IMAP service....<br />\n";
 554
 555 /** Can we open a connection? */
 556 $stream = fsockopen( ($use_imap_tls==1?'tls://':'').$imapServerAddress, $imapPort,
 557         $errorNumber, $errorString);
 558 if(!$stream) {
 559     do_err("Error connecting to IMAP server \"$imapServerAddress:$imapPort\".".
 560             "Server error: ($errorNumber) ".
 561             htmlspecialchars($errorString));
 562 }
 563
 564 /** Is the first response 'OK'? */
 565 $imapline = fgets($stream, 1024);
 566 if(substr($imapline, 0,4) != '* OK') {
 567     do_err('Error connecting to IMAP server. Server error: '.
 568             htmlspecialchars($imapline));
 569 }
 570
 571 echo $IND . 'IMAP server ready (<tt><small>'.
 572     htmlspecialchars(trim($imapline))."</small></tt>)<br />\n";
 573
 574 /** Check capabilities */
 575 fputs($stream, "A001 CAPABILITY\r\n");
 576 $capline = '';
 577 while ($line=fgets($stream, 1024)){
 578     if (preg_match("/A001.*/",$line)) {
 579         break;
 580     } else {
 581         $capline.=$line;
 582     }
 583 }
 584
 585 /* don't display capabilities before STARTTLS */
 586 if ($use_imap_tls===2 && stristr($capline, 'STARTTLS') === false) {
 587     do_err('Your server doesn\'t support STARTTLS.');
 588 } elseif($use_imap_tls===2) {
 589     /* try starting starttls */
 590     fwrite($stream,"A002 STARTTLS\r\n");
 591     $starttls_line=fgets($stream, 1024);
 592     if (! preg_match("/^A002 OK.*/i",$starttls_line)) {
 593         $imap_starttls_err = 'IMAP STARTTLS failed. Server replied: '
 594             .htmlspecialchars($starttls_line);
 595         do_err($imap_starttls_err);
 596     } elseif (! stream_socket_enable_crypto($stream,true,STREAM_CRYPTO_METHOD_TLS_CLIENT)) {
 597         do_err('Failed to enable encryption on IMAP connection.');
 598     } else {
 599         echo $IND . "IMAP STARTTLS extension looks OK.<br />\n";
 600     }
 601
 602     // get new capability line
 603     fwrite($stream,"A003 CAPABILITY\r\n");
 604     $capline='';
 605     while ($line=fgets($stream, 1024)){
 606         if (preg_match("/A003.*/",$line)) {
 607             break;
 608         } else {
 609             $capline.=$line;
 610         }
 611     }
 612 }
 613
 614 echo $IND . 'Capabilities: <tt>'.htmlspecialchars($capline)."</tt><br />\n";
 615
 616 if($imap_auth_mech == 'login' && stristr($capline, 'LOGINDISABLED') !== FALSE) {
 617     do_err('Your server doesn\'t allow plaintext logins. '.
 618             'Try enabling another authentication mechanism like CRAM-MD5, DIGEST-MD5 or TLS-encryption '.
 619             'in the SquirrelMail configuration.', FALSE);
 620 }
 621
 622 if (stristr($capline, 'XMAGICTRASH') !== false) {
 623     $magic_trash = 'It looks like IMAP_MOVE_EXPUNGE_TO_TRASH option is turned on '
 624         .'in your Courier IMAP configuration. Courier does not provide tools that '
 625         .'allow to detect folder used for Trash or commands are not documented. '
 626         .'SquirrelMail can\'t detect special trash folder. SquirrelMail manages '
 627         .'all message deletion or move operations internally and '
 628         .'IMAP_MOVE_EXPUNGE_TO_TRASH option can cause errors in message and '
 629         .'folder management operations. Please turn off IMAP_MOVE_EXPUNGE_TO_TRASH '
 630         .'option in Courier imapd configuration.';
 631     do_err($magic_trash,false);
 632 }
 633
 634 /* add warning about IMAP delivery */
 635 if (stristr($capline, 'XCOURIEROUTBOX') !== false) {
 636     $courier_outbox = 'OUTBOX setting is enabled in your Courier imapd '
 637         .'configuration. SquirrelMail uses standard SMTP protocol or sendmail '
 638         .'binary to send emails. Courier IMAP delivery method is not supported'
 639         .' and can create duplicate email messages.';
 640     do_err($courier_outbox,false);
 641 }
 642
 643 /** OK, close connection */
 644 fputs($stream, "A004 LOGOUT\r\n");
 645 fclose($stream);
 646
 647 echo "Checking internationalization (i18n) settings...<br />\n";
 648 echo "$IND gettext - ";
 649 if (function_exists('gettext')) {
 650     echo 'Gettext functions are available.'
 651         .' On some systems you must have appropriate system locales compiled.'
 652         ."<br />\n";
 653
 654     /* optional setlocale() tests. Should work only on glibc systems. */
 655     if (sqgetGlobalVar('testlocales',$testlocales,SQ_GET)) {
 656         include_once(SM_PATH . 'include/languages.php');
 657         echo $IND . $IND . 'Testing translations:<br>';
 658         foreach ($languages as $lang_code => $lang_data) {
 659             /* don't test aliases */
 660             if (isset($lang_data['NAME'])) {
 661                 /* locale can be $lang_code or $lang_data['LOCALE'] */
 662                 if (isset($lang_data['LOCALE'])) {
 663                     $setlocale = $lang_data['LOCALE'];
 664                 } else {
 665                     $setlocale = $lang_code;
 666                 }
 667                 /* prepare information about tested locales */
 668                 if (is_array($setlocale)) {
 669                     $display_locale = implode(', ',$setlocale);
 670                     $locale_count = count($setlocale);
 671                 } else {
 672                     $display_locale = $setlocale;
 673                     $locale_count = 1;
 674                 }
 675                 $tested_locales_msg = 'Tested '.htmlspecialchars($display_locale).' '
 676                     .($locale_count>1 ? 'locales':'locale'). '.';
 677
 678                 echo $IND . $IND .$IND . $lang_data['NAME'].' (' .$lang_code. ') - ';
 679                 $retlocale = sq_setlocale(LC_ALL,$setlocale);
 680                 if (is_bool($retlocale)) {
 681                     echo '<font color="red">unsupported</font>. ';
 682                     echo $tested_locales_msg;
 683                 } else {
 684                     echo 'supported. '
 685                         .$tested_locales_msg
 686                         .' setlocale() returned "'.htmlspecialchars($retlocale).'"';
 687                 }
 688                 echo "<br />\n";
 689             }
 690         }
 691         echo $IND . $IND . '<a href="configtest.php">Don\'t test translations</a>';
 692     } else {
 693         echo $IND . $IND . '<a href="configtest.php?testlocales=1">Test translations</a>. '
 694             .'This test is not accurate and might work only on some systems.'
 695             ."\n";
 696     }
 697     echo "<br />\n";
 698     /* end of translation tests */
 699 } else {
 700     echo 'Gettext functions are unavailable.'
 701         .' SquirrelMail will use slower internal gettext functions.'
 702         ."<br />\n";
 703 }
 704 echo "$IND mbstring - ";
 705 if (function_exists('mb_detect_encoding')) {
 706     echo "Mbstring functions are available.<br />\n";
 707 } else {
 708     echo 'Mbstring functions are unavailable.'
 709         ." Japanese translation won't work.<br />\n";
 710 }
 711 echo "$IND recode - ";
 712 if (function_exists('recode')) {
 713     echo "Recode functions are available.<br />\n";
 714 } elseif (isset($use_php_recode) && $use_php_recode) {
 715     echo "Recode functions are unavailable.<br />\n";
 716     do_err('Your configuration requires recode support, but recode support is missing.');
 717 } else {
 718     echo "Recode functions are unavailable.<br />\n";
 719 }
 720 echo "$IND iconv - ";
 721 if (function_exists('iconv')) {
 722     echo "Iconv functions are available.<br />\n";
 723 } elseif (isset($use_php_iconv) && $use_php_iconv) {
 724     echo "Iconv functions are unavailable.<br />\n";
 725     do_err('Your configuration requires iconv support, but iconv support is missing.');
 726 } else {
 727     echo "Iconv functions are unavailable.<br />\n";
 728 }
 729 // same test as in include/init.php + date_default_timezone_set check
 730 echo "$IND timezone - ";
 731 if ( (!ini_get('safe_mode')) || function_exists('date_default_timezone_set') ||
 732         !strcmp(ini_get('safe_mode_allowed_env_vars'),'') ||
 733         preg_match('/^([\w_]+,)*TZ/', ini_get('safe_mode_allowed_env_vars')) ) {
 734     echo "Webmail users can change their time zone settings. \n";
 735 } else {
 736     echo "Webmail users can't change their time zone settings. \n";
 737 }
 738 if (isset($_ENV['TZ'])) {
 739     echo 'Default time zone is '.htmlspecialchars($_ENV['TZ']);
 740 } else {
 741     echo 'Current time zone is '.date('T');
 742 }
 743 echo ".<br />\n";
 744
 745 // Pear DB tests
 746 echo "Checking database functions...<br />\n";
 747 if($addrbook_dsn || $prefs_dsn || $addrbook_global_dsn) {
 748     @include_once('DB.php');
 749     if (class_exists('DB')) {
 750         echo "$IND PHP Pear DB support is present.<br />\n";
 751         $db_functions=array(
 752                 'dbase' => 'dbase_open',
 753                 'fbsql' => 'fbsql_connect',
 754                 'interbase' => 'ibase_connect',
 755                 'informix' => 'ifx_connect',
 756                 'msql' => 'msql_connect',
 757                 'mssql' => 'mssql_connect',
 758                 'mysql' => 'mysql_connect',
 759                 'mysqli' => 'mysqli_connect',
 760                 'oci8' => 'ocilogon',
 761                 'odbc' => 'odbc_connect',
 762                 'pgsql' => 'pg_connect',
 763                 'sqlite' => 'sqlite_open',
 764                 'sybase' => 'sybase_connect'
 765                 );
 766
 767         $dsns = array();
 768         if($prefs_dsn) {
 769             $dsns['preferences'] = $prefs_dsn;
 770         }
 771         if($addrbook_dsn) {
 772             $dsns['addressbook'] = $addrbook_dsn;
 773         }
 774         if($addrbook_global_dsn) {
 775             $dsns['global addressbook'] = $addrbook_global_dsn;
 776         }
 777
 778         foreach($dsns as $type => $dsn) {
 779             $aDsn = explode(':', $dsn);
 780             $dbtype = array_shift($aDsn);
 781             if(isset($db_functions[$dbtype]) && function_exists($db_functions[$dbtype])) {
 782                 echo "$IND$dbtype database support present.<br />\n";
 783
 784                 // now, test this interface:
 785
 786                 $dbh = DB::connect($dsn, true);
 787                 if (DB::isError($dbh)) {
 788                     do_err('Database error: '. htmlspecialchars(DB::errorMessage($dbh)) .
 789                             ' in ' .$type .' DSN.');
 790                 }
 791                 $dbh->disconnect();
 792                 echo "$IND$type database connect successful.<br />\n";
 793
 794             } else {
 795                 do_err($dbtype.' database support not present!');
 796             }
 797         }
 798     } else {
 799         $db_error='Required PHP PEAR DB support is not available.'
 800             .' Is PEAR installed and is the include path set correctly to find <tt>DB.php</tt>?'
 801             .' The include path is now:<tt>' . ini_get('include_path') . '</tt>.';
 802         do_err($db_error);
 803     }
 804 } else {
 805     echo $IND."not using database functionality.<br />\n";
 806 }
 807
 808 // LDAP DB tests
 809 echo "Checking LDAP functions...<br />\n";
 810 if( empty($ldap_server) ) {
 811     echo $IND."not using LDAP functionality.<br />\n";
 812 } else {
 813     if ( !function_exists('ldap_connect') ) {
 814         do_err('Required LDAP support is not available.');
 815     } else {
 816         echo "$IND LDAP support present.<br />\n";
 817         foreach ( $ldap_server as $param ) {
 818
 819             $linkid = @ldap_connect($param['host'], (empty($param['port']) ? 389 : $param['port']) );
 820
 821             if ( $linkid ) {
 822                 echo "$IND LDAP connect to ".$param['host']." successful: ".$linkid."<br />\n";
 823
 824                 if ( !empty($param['protocol']) &&
 825                         !ldap_set_option($linkid, LDAP_OPT_PROTOCOL_VERSION, $param['protocol']) ) {
 826                     do_err('Unable to set LDAP protocol');
 827                 }
 828
 829                 if ( empty($param['binddn']) ) {
 830                     $bind = @ldap_bind($linkid);
 831                 } else {
 832                     $bind = @ldap_bind($param['binddn'], $param['bindpw']);
 833                 }
 834
 835                 if ( $bind ) {
 836                     echo "$IND LDAP Bind Successful <br />";
 837                 } else {
 838                     do_err('Unable to Bind to LDAP Server');
 839                 }
 840
 841                 @ldap_close($linkid);
 842             } else {
 843                 do_err('Connection to LDAP failed');
 844             }
 845         }
 846     }
 847 }
 848
 849 echo '<hr width="75%" align="center">';
 850 echo '<h2 align="center">Summary</h2>';
 851 $footer = '<hr width="75%" align="center">';
 852 if ($warnings) {
 853     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>';
 854     echo $footer;
 855 } else {
 856     print <<< EOF
 857 <p>Congratulations, your SquirrelMail setup looks fine to me!</p>
 858
 859 <p><a href="login.php">Login now</a></p>
 860
 861 </body>
 862 </html>
 863 EOF;
 864     echo $footer;
 865 }
 866 ?>