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 $warnings = 0;
  21
  22 function do_err($str, $fatal = TRUE) {
  23     global $IND, $warnings;
  24     $level = $fatal ? 'FATAL ERROR:' : 'WARNING:';
  25     echo '<p>'.$IND.'<font color="red"><b>' . $level . '</b></font> ' .$str. "</p>\n";
  26     if($fatal) {
  27         echo '</body></html>';
  28         exit;
  29     } else {
  30         $warnings++;
  31     }
  32 }
  33
  34 $IND = str_repeat('&nbsp;',4);
  35
  36 ob_implicit_flush();
  37 /** @ignore */
  38 define('SM_PATH', '../');
  39
  40 /* set default value in order to block remote access to script */
  41 $allow_remote_configtest=false;
  42
  43 /*
  44  * Load config before output begins. functions/strings.php depends on
  45  * functions/globals.php. functions/global.php needs to be run before
  46  * any html output starts. If config.php is missing, error will be displayed
  47  * later.
  48  */
  49 if (file_exists(SM_PATH . 'config/config.php')) {
  50         require(SM_PATH . 'config/config.php');
  51 }
  52 require(SM_PATH . 'functions/global.php');
  53 require(SM_PATH . 'functions/strings.php');
  54
  55 ?><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
  56   "http://www.w3.org/TR/1999/REC-html401-19991224/loose.dtd">
  57 <html>
  58 <head>
  59   <meta name="robots" content="noindex,nofollow">
  60   <title>SquirrelMail configtest</title>
  61 </head>
  62 <body>
  63 <h1>SquirrelMail configtest</h1>
  64
  65 <p>This script will try to check some aspects of your SquirrelMail configuration
  66 and point you to errors whereever it can find them. You need to go run <tt>conf.pl</tt>
  67 in the <tt>config/</tt> directory first before you run this script.</p>
  68
  69 <?php
  70
  71 $included = array_map('basename', get_included_files() );
  72 if(!in_array('config.php', $included)) {
  73     if(!file_exists(SM_PATH . 'config/config.php')) {
  74         do_err('Config file '.SM_PATH . 'config/config.php does not exist!<br />'.
  75                 'You need to run <tt>conf.pl</tt> first.');
  76     }
  77     do_err('Could not read '.SM_PATH.'config/config.php! Check file permissions.');
  78 }
  79 if(!in_array('strings.php', $included)) {
  80     do_err('Could not include '.SM_PATH.'functions/strings.php!<br />'.
  81             'Check permissions on that file.');
  82 }
  83
  84 /* Block remote use of script */
  85 if (! $allow_remote_configtest) {
  86     sqGetGlobalVar('REMOTE_ADDR',$client_ip,SQ_SERVER);
  87     sqGetGlobalVar('SERVER_ADDR',$server_ip,SQ_SERVER);
  88
  89     if ((! isset($client_ip) || $client_ip!='127.0.0.1') &&
  90             (! isset($client_ip) || ! isset($server_ip) || $client_ip!=$server_ip)) {
  91         do_err('Enable "Allow remote configtest" option in squirrelmail configuration in order to use this script.');
  92     }
  93 }
  94 /* checking PHP specs */
  95
  96 echo "<p><table>\n<tr><td>SquirrelMail version:</td><td><b>" . $version . "</b></td></tr>\n" .
  97     '<tr><td>Config file version:</td><td><b>' . $config_version . "</b></td></tr>\n" .
  98     '<tr><td>Config file last modified:</td><td><b>' .
  99     date ('d F Y H:i:s', filemtime(SM_PATH . 'config/config.php')) .
 100     "</b></td></tr>\n</table>\n</p>\n\n";
 101
 102 /* check $config_version */
 103 if ($config_version!='1.4.0') {
 104     do_err('Configuration file version does not match required version. Please update your configuration file.');
 105 }
 106
 107 echo "Checking PHP configuration...<br />\n";
 108
 109 if(!check_php_version(4,1,0)) {
 110     do_err('Insufficient PHP version: '. PHP_VERSION . '! Minimum required: 4.1.0');
 111 }
 112
 113 echo $IND . 'PHP version ' . PHP_VERSION . ' OK. (You have: ' . phpversion() . ". Minimum: 4.1.0)<br />\n";
 114 if ((bool) ini_get('register_globals')) {
 115         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);
 116 }
 117 $php_exts = array('session','pcre');
 118 $diff = array_diff($php_exts, get_loaded_extensions());
 119 if(count($diff)) {
 120     do_err('Required PHP extensions missing: '.implode(', ',$diff) );
 121 }
 122
 123 echo $IND . "PHP extensions OK.<br />\n";
 124
 125 /* dangerous php settings */
 126 /**
 127  * mbstring.func_overload allows to replace original string and regexp functions
 128  * with their equivalents from php mbstring extension. It causes problems when
 129  * scripts analyze 8bit strings byte after byte or use 8bit strings in regexp tests.
 130  * Setting can be controlled in php.ini (php 4.2.0), webserver config (php 4.2.0)
 131  * and .htaccess files (php 4.3.5).
 132  */
 133 if (function_exists('mb_internal_encoding') &&
 134     check_php_version(4,2,0) &&
 135     (int)ini_get('mbstring.func_overload')!=0) {
 136     $mb_error='You have enabled mbstring overloading.'
 137         .' It can cause problems with SquirrelMail scripts that rely on single byte string functions.';
 138     do_err($mb_error);
 139 }
 140
 141 /* checking paths */
 142
 143 echo "Checking paths...<br />\n";
 144
 145 if(!file_exists($data_dir)) {
 146     // data_dir is not that important in db_setups.
 147     if (isset($prefs_dsn) && ! empty($prefs_dsn)) {
 148         $data_dir_error = "Data dir ($data_dir) does not exist!\n";
 149         echo $IND .'<font color="red"><b>ERROR:</b></font> ' . $data_dir_error;
 150     } else {
 151         do_err("Data dir ($data_dir) does not exist!");
 152     }
 153 }
 154 // don't check if errors
 155 if(!isset($data_dir_error) && !is_dir($data_dir)) {
 156     if (isset($prefs_dsn) && ! empty($prefs_dsn)) {
 157         $data_dir_error = "Data dir ($data_dir) is not a directory!\n";
 158         echo $IND . '<font color="red"><b>ERROR:</b></font> ' . $data_dir_error;
 159     } else {
 160         do_err("Data dir ($data_dir) is not a directory!");
 161     }
 162 }
 163 // datadir should be executable - but no clean way to test on that
 164 if(!isset($data_dir_error) && !is_writable($data_dir)) {
 165     if (isset($prefs_dsn) && ! empty($prefs_dsn)) {
 166         $data_dir_error = "Data dir ($data_dir) is not writable!\n";
 167         echo $IND . '<font color="red"><b>ERROR:</b></font> ' . $data_dir_error;
 168     } else {
 169         do_err("Data dir ($data_dir) is not writable!");
 170     }
 171 }
 172
 173 if (isset($data_dir_error)) {
 174     echo " Some plugins might need access to data directory.<br />\n";
 175 } else {
 176     // todo_ornot: actually write something and read it back.
 177     echo $IND . "Data dir OK.<br />\n";
 178 }
 179
 180 if($data_dir == $attachment_dir) {
 181     echo $IND . "Attachment dir is the same as data dir.<br />\n";
 182     if (isset($data_dir_error)) {
 183         do_err($data_dir_error);
 184     }
 185 } else {
 186     if(!file_exists($attachment_dir)) {
 187         do_err("Attachment dir ($attachment_dir) does not exist!");
 188     }
 189     if (!is_dir($attachment_dir)) {
 190         do_err("Attachment dir ($attachment_dir) is not a directory!");
 191     }
 192     if (!is_writable($attachment_dir)) {
 193         do_err("I cannot write to attachment dir ($attachment_dir)!");
 194     }
 195     echo $IND . "Attachment dir OK.<br />\n";
 196 }
 197
 198
 199 /* check plugins and themes */
 200 $bad_plugins = array(
 201         'attachment_common',      // Integrated into SquirrelMail 1.2 core
 202         'auto_prune_sent',        // Obsolete: See Proon Automatic Folder Pruning plugin
 203         'compose_new_window',     // Integrated into SquirrelMail 1.4 core
 204         'delete_move_next',       // Integrated into SquirrelMail 1.5 core
 205         'disk_quota',             // Obsolete: See Check Quota plugin
 206         'email_priority',         // Integrated into SquirrelMail 1.2 core
 207         'emoticons',              // Obsolete: See HTML Mail plugin
 208         'focus_change',           // Integrated into SquirrelMail 1.2 core
 209         'folder_settings',        // Integrated into SquirrelMail 1.5.1 core
 210         'global_sql_addressbook', // Integrated into SquirrelMail 1.4 core
 211         'hancock',                // Not Working: See Random Signature Taglines plugin
 212         'msg_flags',              // Integrated into SquirrelMail 1.5.1 core
 213         'message_source',         // Added to SquirrelMail 1.4 Core Plugins (message_details)
 214         'motd',                   // Integrated into SquirrelMail 1.2 core
 215         'paginator',              // Integrated into SquirrelMail 1.2 core
 216         'printer_friendly',       // Integrated into SquirrelMail 1.2 core
 217         'procfilter',             // Obsolete: See Server Side Filter plugin
 218         'redhat_php_cgi_fix',     // Integrated into SquirrelMail 1.1.1 core
 219         'send_to_semicolon',      // Integrated into SquirrelMail 1.4.1 core
 220         'spamassassin',           // Not working beyond SquirrelMail 1.2.7: See Spamassassin SpamFilter (Frontend) v2 plugin
 221         'sqcalendar',             // Added to SquirrelMail 1.2 Core Plugins (calendar)
 222         'sqclock',                // Integrated into SquirrelMail 1.2 core
 223         'sql_squirrel_logger',    // Obsolete: See Squirrel Logger plugin
 224         'tmda',                   // Obsolete: See TMDA Tools plugin
 225         'vacation',               // Obsolete: See Vacation Local plugin
 226         'view_as_html',           // Integrated into SquirrelMail 1.5.1 core
 227         'xmailer'                 // Integrated into SquirrelMail 1.2 core
 228         );
 229
 230 if (isset($plugins[0])) {
 231     foreach($plugins as $plugin) {
 232         if(!file_exists(SM_PATH .'plugins/'.$plugin)) {
 233             do_err('You have enabled the <i>'.$plugin.'</i> plugin, but I cannot find it.', FALSE);
 234         } elseif (!is_readable(SM_PATH .'plugins/'.$plugin.'/setup.php')) {
 235             do_err('You have enabled the <i>'.$plugin.'</i> plugin, but I cannot read its setup.php file.', FALSE);
 236         } elseif (in_array($plugin, $bad_plugins)) {
 237             do_err('You have enabled the <i>'.$plugin.'</i> plugin, which causes problems with this version of SquirrelMail. Please check the ReleaseNotes or other documentation for more information.', false);
 238         }
 239     }
 240     echo $IND . "Plugins OK.<br />\n";
 241 } else {
 242     echo $IND . "Plugins are not enabled in config.<br />\n";
 243 }
 244 foreach($theme as $thm) {
 245     if(!file_exists($thm['PATH'])) {
 246         do_err('You have enabled the <i>'.$thm['NAME'].'</i> theme but I cannot find it ('.$thm['PATH'].').', FALSE);
 247     } elseif(!is_readable($thm['PATH'])) {
 248         do_err('You have enabled the <i>'.$thm['NAME'].'</i> theme but I cannot read it ('.$thm['PATH'].').', FALSE);
 249     }
 250 }
 251
 252 echo $IND . "Themes OK.<br />\n";
 253
 254 if ( $squirrelmail_default_language != 'en_US' ) {
 255     $loc_path = SM_PATH .'locale/'.$squirrelmail_default_language.'/LC_MESSAGES/squirrelmail.mo';
 256     if( ! file_exists( $loc_path ) ) {
 257         do_err('You have set <i>' . $squirrelmail_default_language .
 258                 '</i> as your default language, but I cannot find this translation (should be '.
 259                 'in <tt>' . $loc_path . '</tt>). Please note that you have to download translations '.
 260                 'separately from the main SquirrelMail package.', FALSE);
 261     } elseif ( ! is_readable( $loc_path ) ) {
 262         do_err('You have set <i>' . $squirrelmail_default_language .
 263                 '</i> as your default language, but I cannot read this translation (file '.
 264                 'in <tt>' . $loc_path . '</tt> unreadable).', FALSE);
 265     } else {
 266         echo $IND . "Default language OK.<br />\n";
 267     }
 268 } else {
 269     echo $IND . "Default language OK.<br />\n";
 270 }
 271
 272 echo $IND . "Base URL detected as: <tt>" . htmlspecialchars(get_location()) . "</tt><br />\n";
 273
 274 /* check minimal requirements for other security options */
 275
 276 /* imaps or ssmtp */
 277 if($use_smtp_tls == 1 || $use_imap_tls == 1) {
 278     if(!check_php_version(4,3,0)) {
 279         do_err('You need at least PHP 4.3.0 for SMTP/IMAP TLS!');
 280     }
 281     if(!extension_loaded('openssl')) {
 282         do_err('You need the openssl PHP extension to use SMTP/IMAP TLS!');
 283     }
 284 }
 285 /* starttls extensions */
 286 if($use_smtp_tls === 2 || $use_imap_tls === 2) {
 287     if (! function_exists('stream_socket_enable_crypto')) {
 288         do_err('If you want to use STARTTLS extension, you need stream_socket_enable_crypto() function from PHP 5.1.0 and newer.');
 289     }
 290 }
 291 /* digest-md5 */
 292 if ($smtp_auth_mech=='digest-md5' || $imap_auth_mech =='digest-md5') {
 293     if (!extension_loaded('xml')) {
 294         do_err('You need the PHP XML extension to use Digest-MD5 authentication!');
 295     }
 296 }
 297
 298 /* check outgoing mail */
 299
 300 echo "Checking outgoing mail service....<br />\n";
 301
 302 if($useSendmail) {
 303     // is_executable also checks for existance, but we want to be as precise as possible with the errors
 304     if(!file_exists($sendmail_path)) {
 305         do_err("Location of sendmail program incorrect ($sendmail_path)!");
 306     }
 307     if(!is_executable($sendmail_path)) {
 308         do_err("I cannot execute the sendmail program ($sendmail_path)!");
 309     }
 310
 311     echo $IND . "sendmail OK<br />\n";
 312 } else {
 313     $stream = fsockopen( ($use_smtp_tls==1?'tls://':'').$smtpServerAddress, $smtpPort,
 314             $errorNumber, $errorString);
 315     if(!$stream) {
 316         do_err("Error connecting to SMTP server \"$smtpServerAddress:$smtpPort\".".
 317                 "Server error: ($errorNumber) ".htmlspecialchars($errorString));
 318     }
 319
 320     // check for SMTP code; should be 2xx to allow us access
 321     $smtpline = fgets($stream, 1024);
 322     if(((int) $smtpline{0}) > 3) {
 323         do_err("Error connecting to SMTP server. Server error: ".
 324                 htmlspecialchars($smtpline));
 325     }
 326
 327     /* smtp starttls checks */
 328     if ($use_smtp_tls===2) {
 329         // if something breaks, script should close smtp connection on exit.
 330
 331         // say helo
 332         fwrite($stream,"EHLO $client_ip\r\n");
 333
 334         $ehlo=array();
 335         $ehlo_error = false;
 336         while ($line=fgets($stream, 1024)){
 337             if (preg_match("/^250(-|\s)(\S*)\s+(\S.*)/",$line,$match)||
 338                     preg_match("/^250(-|\s)(\S*)\s+/",$line,$match)) {
 339                 if (!isset($match[3])) {
 340                     // simple one word extension
 341                     $ehlo[strtoupper($match[2])]='';
 342                 } else {
 343                     // ehlo-keyword + ehlo-param
 344                     $ehlo[strtoupper($match[2])]=trim($match[3]);
 345                 }
 346                 if ($match[1]==' ') {
 347                     $ret = $line;
 348                     break;
 349                 }
 350             } else {
 351                 //
 352                 $ehlo_error = true;
 353                 $ehlo[]=$line;
 354                 break;
 355             }
 356         }
 357         if ($ehlo_error) {
 358             do_err('SMTP EHLO failed. You need ESMTP support for SMTP STARTTLS');
 359         } elseif (!array_key_exists('STARTTLS',$ehlo)) {
 360             do_err('STARTTLS support is not declared by SMTP server.');
 361         }
 362
 363         fwrite($stream,"STARTTLS\r\n");
 364         $starttls_response=fgets($stream, 1024);
 365         if ($starttls_response[0]!=2) {
 366             $starttls_cmd_err = 'SMTP STARTTLS failed. Server replied: '
 367                 .htmlspecialchars($starttls_response);
 368             do_err($starttls_cmd_err);
 369         } elseif(! stream_socket_enable_crypto($stream,true,STREAM_CRYPTO_METHOD_TLS_CLIENT)) {
 370             do_err('Failed to enable encryption on SMTP STARTTLS connection.');
 371         } else {
 372             echo $IND . "SMTP STARTTLS extension looks OK.<br />\n";
 373         }
 374         // According to RFC we should second ehlo call here.
 375     }
 376
 377     fputs($stream, 'QUIT');
 378     fclose($stream);
 379     echo $IND . 'SMTP server OK (<tt><small>'.
 380             trim(htmlspecialchars($smtpline))."</small></tt>)<br />\n";
 381
 382     /* POP before SMTP */
 383     if($pop_before_smtp) {
 384         $stream = fsockopen($smtpServerAddress, 110, $err_no, $err_str);
 385         if (!$stream) {
 386             do_err("Error connecting to POP Server ($smtpServerAddress:110) "
 387                 . $err_no . ' : ' . htmlspecialchars($err_str));
 388         }
 389
 390         $tmp = fgets($stream, 1024);
 391         if (substr($tmp, 0, 3) != '+OK') {
 392             do_err("Error connecting to POP Server ($smtpServerAddress:110)"
 393                 . ' '.htmlspecialchars($tmp));
 394         }
 395         fputs($stream, 'QUIT');
 396         fclose($stream);
 397         echo $IND . "POP-before-SMTP OK.<br />\n";
 398     }
 399 }
 400
 401 /**
 402  * Check the IMAP server
 403  */
 404 echo "Checking IMAP service....<br />\n";
 405
 406 /** Can we open a connection? */
 407 $stream = fsockopen( ($use_imap_tls==1?'tls://':'').$imapServerAddress, $imapPort,
 408         $errorNumber, $errorString);
 409 if(!$stream) {
 410     do_err("Error connecting to IMAP server \"$imapServerAddress:$imapPort\".".
 411             "Server error: ($errorNumber) ".
 412             htmlspecialchars($errorString));
 413 }
 414
 415 /** Is the first response 'OK'? */
 416 $imapline = fgets($stream, 1024);
 417 if(substr($imapline, 0,4) != '* OK') {
 418     do_err('Error connecting to IMAP server. Server error: '.
 419             htmlspecialchars($imapline));
 420 }
 421
 422 echo $IND . 'IMAP server ready (<tt><small>'.
 423     htmlspecialchars(trim($imapline))."</small></tt>)<br />\n";
 424
 425 /** Check capabilities */
 426 fputs($stream, "A001 CAPABILITY\r\n");
 427 $capline = '';
 428 while ($line=fgets($stream, 1024)){
 429     if (preg_match("/A001.*/",$line)) {
 430         break;
 431     } else {
 432         $capline.=$line;
 433     }
 434 }
 435
 436 /* don't display capabilities before STARTTLS */
 437 if ($use_imap_tls===2 && stristr($capline, 'STARTTLS') === false) {
 438     do_err('Your server doesn\'t support STARTTLS.');
 439 } elseif($use_imap_tls===2) {
 440     /* try starting starttls */
 441     fwrite($stream,"A002 STARTTLS\r\n");
 442     $starttls_line=fgets($stream, 1024);
 443     if (! preg_match("/^A002 OK.*/i",$starttls_line)) {
 444         $imap_starttls_err = 'IMAP STARTTLS failed. Server replied: '
 445             .htmlspecialchars($starttls_line);
 446         do_err($imap_starttls_err);
 447     } elseif (! stream_socket_enable_crypto($stream,true,STREAM_CRYPTO_METHOD_TLS_CLIENT)) {
 448         do_err('Failed to enable encryption on IMAP connection.');
 449     } else {
 450         echo $IND . "IMAP STARTTLS extension looks OK.<br />\n";
 451     }
 452
 453     // get new capability line
 454     fwrite($stream,"A003 CAPABILITY\r\n");
 455     $capline='';
 456     while ($line=fgets($stream, 1024)){
 457         if (preg_match("/A003.*/",$line)) {
 458             break;
 459         } else {
 460             $capline.=$line;
 461         }
 462     }
 463 }
 464
 465 echo $IND . 'Capabilities: <tt>'.htmlspecialchars($capline)."</tt><br />\n";
 466
 467 if($imap_auth_mech == 'login' && stristr($capline, 'LOGINDISABLED') !== FALSE) {
 468     do_err('Your server doesn\'t allow plaintext logins. '.
 469             'Try enabling another authentication mechanism like CRAM-MD5, DIGEST-MD5 or TLS-encryption '.
 470             'in the SquirrelMail configuration.', FALSE);
 471 }
 472
 473 /** OK, close connection */
 474 fputs($stream, "A004 LOGOUT\r\n");
 475 fclose($stream);
 476
 477 echo "Checking internationalization (i18n) settings...<br />\n";
 478 echo "$IND gettext - ";
 479 if (function_exists('gettext')) {
 480     echo 'Gettext functions are available.'
 481         .' On some systems you must have appropriate system locales compiled.'
 482         ."<br />\n";
 483
 484     /* optional setlocale() tests. Should work only on glibc systems. */
 485     if (sqgetGlobalVar('testlocales',$testlocales,SQ_GET)) {
 486         include_once(SM_PATH . 'functions/i18n.php');
 487         echo $IND . $IND . 'Testing translations:<br>';
 488         foreach ($languages as $lang_code => $lang_data) {
 489             /* don't test aliases */
 490             if (isset($lang_data['NAME'])) {
 491                 /* locale can be $lang_code or $lang_data['LOCALE'] */
 492                 if (isset($lang_data['LOCALE'])) {
 493                     $setlocale = $lang_data['LOCALE'];
 494                 } else {
 495                     $setlocale = $lang_code;
 496                 }
 497                 /* prepare information about tested locales */
 498                 if (is_array($setlocale)) {
 499                     $display_locale = implode(', ',$setlocale);
 500                     $locale_count = count($setlocale);
 501                 } else {
 502                     $display_locale = $setlocale;
 503                     $locale_count = 1;
 504                 }
 505                 $tested_locales_msg = 'Tested '.htmlspecialchars($display_locale).' '
 506                     .($locale_count>1 ? 'locales':'locale'). '.';
 507
 508                 echo $IND . $IND .$IND . $lang_data['NAME'].' (' .$lang_code. ') - ';
 509                 $retlocale = sq_setlocale(LC_ALL,$setlocale);
 510                 if (is_bool($retlocale)) {
 511                     echo '<font color="red">unsupported</font>. ';
 512                     echo $tested_locales_msg;
 513                 } else {
 514                     echo 'supported. '
 515                         .$tested_locales_msg
 516                         .' setlocale() returned "'.htmlspecialchars($retlocale).'"';
 517                 }
 518                 echo "<br />\n";
 519             }
 520         }
 521         echo $IND . $IND . '<a href="configtest.php">Don\'t test translations</a>';
 522     } else {
 523         echo $IND . $IND . '<a href="configtest.php?testlocales=1">Test translations</a>. '
 524             .'This test is not accurate and might work only on some systems.'
 525             ."\n";
 526     }
 527     echo "<br />\n";
 528     /* end of translation tests */
 529 } else {
 530     echo 'Gettext functions are unavailable.'
 531         .' SquirrelMail will use slower internal gettext functions.'
 532         ."<br />\n";
 533 }
 534 echo "$IND mbstring - ";
 535 if (function_exists('mb_detect_encoding')) {
 536     echo "Mbstring functions are available.<br />\n";
 537 } else {
 538     echo 'Mbstring functions are unavailable.'
 539         ." Japanese translation won't work.<br />\n";
 540 }
 541 echo "$IND recode - ";
 542 if (function_exists('recode')) {
 543     echo "Recode functions are available.<br />\n";
 544 } elseif (isset($use_php_recode) && $use_php_recode) {
 545     echo "Recode functions are unavailable.<br />\n";
 546     do_err('Your configuration requires recode support, but recode support is missing.');
 547 } else {
 548     echo "Recode functions are unavailable.<br />\n";
 549 }
 550 echo "$IND iconv - ";
 551 if (function_exists('iconv')) {
 552     echo "Iconv functions are available.<br />\n";
 553 } elseif (isset($use_php_iconv) && $use_php_iconv) {
 554     echo "Iconv functions are unavailable.<br />\n";
 555     do_err('Your configuration requires iconv support, but iconv support is missing.');
 556 } else {
 557     echo "Iconv functions are unavailable.<br />\n";
 558 }
 559 // same test as in include/validate.php
 560 echo "$IND timezone - ";
 561 if ( (!ini_get('safe_mode')) ||
 562         !strcmp(ini_get('safe_mode_allowed_env_vars'),'') ||
 563         preg_match('/^([\w_]+,)*TZ/', ini_get('safe_mode_allowed_env_vars')) ) {
 564     echo "Webmail users can change their time zone settings. \n";
 565 } else {
 566     echo "Webmail users can't change their time zone settings. \n";
 567 }
 568 if (isset($_ENV['TZ'])) {
 569     echo 'Default time zone is '.htmlspecialchars($_ENV['TZ']);
 570 } else {
 571     echo 'Current time zone is '.date('T');
 572 }
 573 echo ".<br />\n";
 574
 575 // Pear DB tests
 576 echo "Checking database functions...<br />\n";
 577 if($addrbook_dsn || $prefs_dsn || $addrbook_global_dsn) {
 578     @include_once('DB.php');
 579     if (class_exists('DB')) {
 580         echo "$IND PHP Pear DB support is present.<br />\n";
 581         $db_functions=array(
 582                 'dbase' => 'dbase_open',
 583                 'fbsql' => 'fbsql_connect',
 584                 'interbase' => 'ibase_connect',
 585                 'informix' => 'ifx_connect',
 586                 'msql' => 'msql_connect',
 587                 'mssql' => 'mssql_connect',
 588                 'mysql' => 'mysql_connect',
 589                 'mysqli' => 'mysqli_connect',
 590                 'oci8' => 'ocilogon',
 591                 'odbc' => 'odbc_connect',
 592                 'pgsql' => 'pg_connect',
 593                 'sqlite' => 'sqlite_open',
 594                 'sybase' => 'sybase_connect'
 595                 );
 596
 597         $dsns = array();
 598         if($prefs_dsn) {
 599             $dsns['preferences'] = $prefs_dsn;
 600         }
 601         if($addrbook_dsn) {
 602             $dsns['addressbook'] = $addrbook_dsn;
 603         }
 604         if($addrbook_global_dsn) {
 605             $dsns['global addressbook'] = $addrbook_global_dsn;
 606         }
 607
 608         foreach($dsns as $type => $dsn) {
 609             $aDsn = explode(':', $dsn);
 610             $dbtype = array_shift($aDsn);
 611             if(isset($db_functions[$dbtype]) && function_exists($db_functions[$dbtype])) {
 612                 echo "$IND$dbtype database support present.<br />\n";
 613
 614                 // now, test this interface:
 615
 616                 $dbh = DB::connect($dsn, true);
 617                 if (DB::isError($dbh)) {
 618                     do_err('Database error: '. htmlspecialchars(DB::errorMessage($dbh)) .
 619                             ' in ' .$type .' DSN.');
 620                 }
 621                 $dbh->disconnect();
 622                 echo "$IND$type database connect successful.<br />\n";
 623
 624             } else {
 625                 do_err($dbtype.' database support not present!');
 626             }
 627         }
 628     } else {
 629         $db_error='Required PHP PEAR DB support is not available.'
 630             .' Is PEAR installed and is the include path set correctly to find <tt>DB.php</tt>?'
 631             .' The include path is now:<tt>' . ini_get('include_path') . '</tt>.';
 632         do_err($db_error);
 633     }
 634 } else {
 635     echo $IND."not using database functionality.<br />\n";
 636 }
 637
 638 // LDAP DB tests
 639 echo "Checking LDAP functions...<br />\n";
 640 if( empty($ldap_server) ) {
 641     echo $IND."not using LDAP functionality.<br />\n";
 642 } else {
 643     if ( !function_exists('ldap_connect') ) {
 644         do_err('Required LDAP support is not available.');
 645     } else {
 646         echo "$IND LDAP support present.<br />\n";
 647         foreach ( $ldap_server as $param ) {
 648
 649             $linkid = @ldap_connect($param['host'], (empty($param['port']) ? 389 : $param['port']) );
 650
 651             if ( $linkid ) {
 652                 echo "$IND LDAP connect to ".$param['host']." successful: ".$linkid."<br />\n";
 653
 654                 if ( !empty($param['protocol']) &&
 655                         !ldap_set_option($linkid, LDAP_OPT_PROTOCOL_VERSION, $param['protocol']) ) {
 656                     do_err('Unable to set LDAP protocol');
 657                 }
 658
 659                 if ( empty($param['binddn']) ) {
 660                     $bind = @ldap_bind($linkid);
 661                 } else {
 662                     $bind = @ldap_bind($param['binddn'], $param['bindpw']);
 663                 }
 664
 665                 if ( $bind ) {
 666                     echo "$IND LDAP Bind Successful <br />";
 667                 } else {
 668                     do_err('Unable to Bind to LDAP Server');
 669                 }
 670
 671                 @ldap_close($linkid);
 672             } else {
 673                 do_err('Connection to LDAP failed');
 674             }
 675         }
 676     }
 677 }
 678
 679 echo '<hr width="75%" align="center">';
 680 echo '<h2 align="center">Summary</h2>';
 681 $footer = '<hr width="75%" align="center">';
 682 if ($warnings) {
 683     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>';
 684     echo $footer;
 685 } else {
 686     print <<< EOF
 687 <p>Congratulations, your SquirrelMail setup looks fine to me!</p>
 688
 689 <p><a href="login.php">Login now</a></p>
 690
 691 </body>
 692 </html>
 693 EOF;
 694     echo $footer;
 695 }
 696 ?>