libraries/replication_gui.lib.php

   1 <?php
   2 /* vim: set expandtab sw=4 ts=4 sts=4: */
   3 /**
   4  * Functions for the replication GUI
   5  *
   6  * @package PhpMyAdmin
   7  */
   8 if (! defined('PHPMYADMIN')) {
   9     exit;
  10 }
  11
  12 /**
  13  * returns HTML for error message
  14  *
  15  * @return String HTML code
  16  */
  17 function PMA_getHtmlForErrorMessage()
  18 {
  19     $html = '';
  20     if (isset($_SESSION['replication']['sr_action_status'])
  21         && isset($_SESSION['replication']['sr_action_info'])
  22     ) {
  23         if ($_SESSION['replication']['sr_action_status'] == 'error') {
  24             $error_message = $_SESSION['replication']['sr_action_info'];
  25             $html .= PMA_Message::error($error_message)->getDisplay();
  26             $_SESSION['replication']['sr_action_status'] = 'unknown';
  27         } elseif ($_SESSION['replication']['sr_action_status'] == 'success') {
  28             $success_message = $_SESSION['replication']['sr_action_info'];
  29             $html .= PMA_Message::success($success_message)->getDisplay();
  30             $_SESSION['replication']['sr_action_status'] = 'unknown';
  31         }
  32     }
  33     return $html;
  34 }
  35
  36 /**
  37  * returns HTML for master replication
  38  *
  39  * @return String HTML code
  40  */
  41 function PMA_getHtmlForMasterReplication()
  42 {
  43     $html = '';
  44     if (! isset($_REQUEST['repl_clear_scr'])) {
  45         $html .= '<fieldset>';
  46         $html .= '<legend>' . __('Master replication') . '</legend>';
  47         $html .= __('This server is configured as master in a replication process.');
  48         $html .= '<ul>';
  49         $html .= '  <li><a href="#" id="master_status_href">';
  50         $html .= __('Show master status') . '</a>';
  51         $html .= PMA_getHtmlForReplicationStatusTable('master', true, false);
  52         $html .= '  </li>';
  53
  54         $html .= '  <li><a href="#" id="master_slaves_href">';
  55         $html .= __('Show connected slaves') . '</a>';
  56         $html .= PMA_getHtmlForReplicationSlavesTable(true);
  57         $html .= '  </li>';
  58
  59         $_url_params = $GLOBALS['url_params'];
  60         $_url_params['mr_adduser'] = true;
  61         $_url_params['repl_clear_scr'] = true;
  62
  63         $html .= '  <li><a href="server_replication.php';
  64         $html .= PMA_URL_getCommon($_url_params)
  65             . '" id="master_addslaveuser_href">';
  66         $html .= __('Add slave replication user') . '</a></li>';
  67     }
  68
  69     // Display 'Add replication slave user' form
  70     if (isset($_REQUEST['mr_adduser'])) {
  71         $html .= PMA_getHtmlForReplicationMasterAddSlaveuser();
  72     } elseif (! isset($_REQUEST['repl_clear_scr'])) {
  73         $html .= "</ul>";
  74         $html .= "</fieldset>";
  75     }
  76
  77     return $html;
  78 }
  79
  80 /**
  81  * returns HTML for master replication configuration
  82  *
  83  * @return String HTML code
  84  */
  85 function PMA_getHtmlForMasterConfiguration()
  86 {
  87     $html  = '<fieldset>';
  88     $html .= '<legend>' . __('Master configuration') . '</legend>';
  89     $html .= __(
  90         'This server is not configured as master server in a '
  91         . 'replication process. You can choose from either replicating '
  92         . 'all databases and ignoring certain (useful if you want to replicate '
  93         . 'majority of databases) or you can choose to ignore all databases by '
  94         . 'default and allow only certain databases to be replicated. '
  95         . 'Please select the mode:'
  96     ) . '<br /><br />';
  97
  98     $html .= '<select name="db_type" id="db_type">';
  99     $html .= '<option value="all">' . __('Replicate all databases; Ignore:');
 100     $html .= '</option>';
 101     $html .= '<option value="ign">' . __('Ignore all databases; Replicate:');
 102     $html .= '</option>';
 103     $html .= '</select>';
 104     $html .= '<br /><br />';
 105     $html .= __('Please select databases:') . '<br />';
 106     $html .= PMA_getHtmlForReplicationDbMultibox();
 107     $html .= '<br /><br />';
 108     $html .= __(
 109         'Now, add the following lines at the end of [mysqld] section'
 110         . ' in your my.cnf and please restart the MySQL server afterwards.'
 111     ) . '<br />';
 112     $html .= '<pre id="rep"></pre>';
 113     $html .= __(
 114         'Once you restarted MySQL server, please click on Go button. '
 115         . 'Afterwards, you should see a message informing you, that this server'
 116         . ' <b>is</b> configured as master.'
 117     );
 118     $html .= '</fieldset>';
 119     $html .= '<fieldset class="tblFooters">';
 120     $html .= ' <form method="post" action="server_replication.php" >';
 121     $html .= PMA_URL_getHiddenInputs('', '');
 122     $html .= '  <input type="submit" value="' . __('Go') . '" id="goButton" />';
 123     $html .= ' </form>';
 124     $html .= '</fieldset>';
 125
 126     return $html;
 127 }
 128
 129 /**
 130  * returns HTML for slave replication configuration
 131  *
 132  * @param bool  $server_slave_status      Whether it is Master or Slave
 133  * @param Array $server_slave_replication Slave replication
 134  *
 135  * @return String HTML code
 136  */
 137 function PMA_getHtmlForSlaveConfiguration(
 138     $server_slave_status, $server_slave_replication
 139 ) {
 140     $html  = '<fieldset>';
 141     $html .= '<legend>' . __('Slave replication') . '</legend>';
 142     /**
 143      * check for multi-master replication functionality
 144      */
 145     $server_slave_multi_replication = $GLOBALS['dbi']->fetchResult(
 146         'SHOW ALL SLAVES STATUS'
 147     );
 148     if ($server_slave_multi_replication) {
 149         $html .= __('Master connection:');
 150         $html .= '<form method="get" action="server_replication.php">';
 151         $html .= PMA_URL_getHiddenInputs($GLOBALS['url_params']);
 152         $html .= ' <select name="master_connection">';
 153         $html .= '<option value="">' . __('Default') . '</option>';
 154         foreach ($server_slave_multi_replication as $server) {
 155             $html .= '<option' . (isset($_REQUEST['master_connection'])
 156                 && $_REQUEST['master_connection'] == $server['Connection_name'] ?
 157                     ' selected="selected"' : '') . '>' . $server['Connection_name']
 158                 . '</option>';
 159         }
 160         $html .= '</select>';
 161         $html .= ' <input type="submit" value="' . __('Go') . '" id="goButton" />';
 162         $html .= '</form>';
 163         $html .= '<br /><br />';
 164     }
 165     if ($server_slave_status) {
 166         $html .= '<div id="slave_configuration_gui">';
 167
 168         $_url_params = $GLOBALS['url_params'];
 169         $_url_params['sr_take_action'] = true;
 170         $_url_params['sr_slave_server_control'] = true;
 171
 172         if ($server_slave_replication[0]['Slave_IO_Running'] == 'No') {
 173             $_url_params['sr_slave_action'] = 'start';
 174         } else {
 175             $_url_params['sr_slave_action'] = 'stop';
 176         }
 177
 178         $_url_params['sr_slave_control_parm'] = 'IO_THREAD';
 179         $slave_control_io_link = 'server_replication.php'
 180             . PMA_URL_getCommon($_url_params);
 181
 182         if ($server_slave_replication[0]['Slave_SQL_Running'] == 'No') {
 183             $_url_params['sr_slave_action'] = 'start';
 184         } else {
 185             $_url_params['sr_slave_action'] = 'stop';
 186         }
 187
 188         $_url_params['sr_slave_control_parm'] = 'SQL_THREAD';
 189         $slave_control_sql_link = 'server_replication.php'
 190             . PMA_URL_getCommon($_url_params);
 191
 192         if ($server_slave_replication[0]['Slave_IO_Running'] == 'No'
 193             || $server_slave_replication[0]['Slave_SQL_Running'] == 'No'
 194         ) {
 195             $_url_params['sr_slave_action'] = 'start';
 196         } else {
 197             $_url_params['sr_slave_action'] = 'stop';
 198         }
 199
 200         $_url_params['sr_slave_control_parm'] = null;
 201         $slave_control_full_link = 'server_replication.php'
 202             . PMA_URL_getCommon($_url_params);
 203
 204         $_url_params['sr_slave_action'] = 'reset';
 205         $slave_control_reset_link = 'server_replication.php'
 206             . PMA_URL_getCommon($_url_params);
 207
 208         $_url_params = $GLOBALS['url_params'];
 209         $_url_params['sr_take_action'] = true;
 210         $_url_params['sr_slave_skip_error'] = true;
 211         $slave_skip_error_link = 'server_replication.php'
 212             . PMA_URL_getCommon($_url_params);
 213
 214         if ($server_slave_replication[0]['Slave_SQL_Running'] == 'No') {
 215             $html .= PMA_Message::error(
 216                 __('Slave SQL Thread not running!')
 217             )->getDisplay();
 218         }
 219         if ($server_slave_replication[0]['Slave_IO_Running'] == 'No') {
 220             $html .= PMA_Message::error(
 221                 __('Slave IO Thread not running!')
 222             )->getDisplay();
 223         }
 224
 225         $_url_params = $GLOBALS['url_params'];
 226         $_url_params['sl_configure'] = true;
 227         $_url_params['repl_clear_scr'] = true;
 228
 229         $reconfiguremaster_link = 'server_replication.php'
 230             . PMA_URL_getCommon($_url_params);
 231
 232         $html .= __(
 233             'Server is configured as slave in a replication process. Would you ' .
 234             'like to:'
 235         );
 236         $html .= '<br />';
 237         $html .= '<ul>';
 238         $html .= ' <li><a href="#" id="slave_status_href">';
 239         $html .= __('See slave status table') . '</a>';
 240         $html .= PMA_getHtmlForReplicationStatusTable('slave', true, false);
 241         $html .= ' </li>';
 242
 243         $html .= ' <li><a href="#" id="slave_control_href">';
 244         $html .= __('Control slave:') . '</a>';
 245         $html .= ' <div id="slave_control_gui" style="display: none">';
 246         $html .= '  <ul>';
 247         $html .= '   <li><a href="' . $slave_control_full_link . '">';
 248         $html .= (($server_slave_replication[0]['Slave_IO_Running'] == 'No' ||
 249                    $server_slave_replication[0]['Slave_SQL_Running'] == 'No')
 250                  ? __('Full start')
 251                  : __('Full stop')) . ' </a></li>';
 252         $html .= '   <li><a href="' . $slave_control_reset_link . '">';
 253         $html .= __('Reset slave') . '</a></li>';
 254         if ($server_slave_replication[0]['Slave_SQL_Running'] == 'No') {
 255             $html .= '   <li><a href="' . $slave_control_sql_link . '">';
 256             $html .= __('Start SQL Thread only') . '</a></li>';
 257         } else {
 258             $html .= '   <li><a href="' . $slave_control_sql_link . '">';
 259             $html .= __('Stop SQL Thread only') . '</a></li>';
 260         }
 261         if ($server_slave_replication[0]['Slave_IO_Running'] == 'No') {
 262             $html .= '   <li><a href="' . $slave_control_io_link . '">';
 263             $html .= __('Start IO Thread only') . '</a></li>';
 264         } else {
 265             $html .= '   <li><a href="' . $slave_control_io_link . '">';
 266             $html .= __('Stop IO Thread only') . '</a></li>';
 267         }
 268         $html .= '  </ul>';
 269         $html .= ' </div>';
 270         $html .= ' </li>';
 271         $html .= ' <li>';
 272         $html .= PMA_getHtmlForSlaveErrorManagement($slave_skip_error_link);
 273         $html .= ' </li>';
 274         $html .= ' <li><a href="' . $reconfiguremaster_link . '">';
 275         $html .=  __('Change or reconfigure master server') . '</a></li>';
 276         $html .= '</ul>';
 277         $html .= '</div>';
 278
 279     } elseif (! isset($_REQUEST['sl_configure'])) {
 280         $_url_params = $GLOBALS['url_params'];
 281         $_url_params['sl_configure'] = true;
 282         $_url_params['repl_clear_scr'] = true;
 283
 284         $html .= sprintf(
 285             __(
 286                 'This server is not configured as slave in a replication process. '
 287                 . 'Would you like to <a href="%s">configure</a> it?'
 288             ),
 289             'server_replication.php' . PMA_URL_getCommon($_url_params)
 290         );
 291     }
 292     $html .= '</fieldset>';
 293
 294     return $html;
 295 }
 296
 297 /**
 298  * returns HTML for Slave Error Management
 299  *
 300  * @param String $slave_skip_error_link error link
 301  *
 302  * @return String HTML code
 303  */
 304 function PMA_getHtmlForSlaveErrorManagement($slave_skip_error_link)
 305 {
 306     $html  = '<a href="#" id="slave_errormanagement_href">';
 307     $html .= __('Error management:') . '</a>';
 308     $html .= ' <div id="slave_errormanagement_gui" style="display: none">';
 309     $html .= PMA_Message::error(
 310         __('Skipping errors might lead into unsynchronized master and slave!')
 311     )->getDisplay();
 312     $html .= '  <ul>';
 313     $html .= '   <li><a href="' . $slave_skip_error_link . '">';
 314     $html .= __('Skip current error') . '</a></li>';
 315     $html .= '   <li>';
 316     $html .= '    <form method="post" action="server_replication.php">';
 317     $html .= PMA_URL_getHiddenInputs('', '');
 318     $html .= sprintf(
 319         __('Skip next %s errors.'),
 320         '<input type="text" name="sr_skip_errors_count" value="1" '
 321         . 'style="width: 30px" />'
 322     );
 323     $html .= '              <input type="submit" name="sr_slave_skip_error" ';
 324     $html .= 'value="' . __('Go') . '" />';
 325     $html .= '      <input type="hidden" name="sr_take_action" value="1" />';
 326     $html .= '    </form></li>';
 327     $html .= '  </ul>';
 328     $html .= ' </div>';
 329     return $html;
 330 }
 331
 332 /**
 333  * returns HTML for not configure for a server replication
 334  *
 335  * @return String HTML code
 336  */
 337 function PMA_getHtmlForNotServerReplication()
 338 {
 339     $_url_params = $GLOBALS['url_params'];
 340     $_url_params['mr_configure'] = true;
 341
 342     $html  = '<fieldset>';
 343     $html .= '<legend>' . __('Master replication') . '</legend>';
 344     $html .= sprintf(
 345         __(
 346             'This server is not configured as master in a replication process. '
 347             . 'Would you like to <a href="%s">configure</a> it?'
 348         ),
 349         'server_replication.php' . PMA_URL_getCommon($_url_params)
 350     );
 351     $html .= '</fieldset>';
 352     return $html;
 353 }
 354
 355 /**
 356  * returns HTML code for selecting databases
 357  *
 358  * @return String HTML code
 359  */
 360 function PMA_getHtmlForReplicationDbMultibox()
 361 {
 362     $multi_values = '';
 363     $multi_values .= '<select name="db_select[]" '
 364         . 'size="6" multiple="multiple" id="db_select">';
 365
 366     foreach ($GLOBALS['pma']->databases as $current_db) {
 367         if ($GLOBALS['dbi']->isSystemSchema($current_db)) {
 368             continue;
 369         }
 370         $current_db = htmlspecialchars($current_db);
 371         $multi_values .= '                <option value="' . $current_db . '" ';
 372         $multi_values .= '>';
 373         $multi_values .= $current_db . '</option>';
 374     } // end while
 375
 376     $multi_values .= '</select><br />';
 377     $multi_values .= '<a href="#" id="db_select_href">' . __('Select All') . '</a>';
 378     $multi_values .= '&nbsp;/&nbsp;';
 379     $multi_values .= '<a href="#" id="db_reset_href">' . __('Unselect All') . '</a>';
 380
 381     return $multi_values;
 382 }
 383
 384 /**
 385  * returns HTML for changing master
 386  *
 387  * @param String $submitname - submit button name
 388  *
 389  * @return String HTML code
 390  */
 391 function PMA_getHtmlForReplicationChangeMaster($submitname)
 392 {
 393     $html = '';
 394     list($username_length, $hostname_length)
 395         = PMA_replicationGetUsernameHostnameLength();
 396
 397     $html .= '<form method="post" action="server_replication.php">';
 398     $html .= PMA_URL_getHiddenInputs('', '');
 399     $html .= ' <fieldset id="fieldset_add_user_login">';
 400     $html .= '  <legend>' . __('Slave configuration');
 401     $html .= ' - ' . __('Change or reconfigure master server') . '</legend>';
 402     $html .= __(
 403         'Make sure, you have unique server-id in your configuration file (my.cnf). '
 404         . 'If not, please add the following line into [mysqld] section:'
 405     );
 406     $html .= '<br />';
 407     $html .= '<pre>server-id=' . time() . '</pre>';
 408
 409     $html .= PMA_getHtmlForAddUserInputDiv(
 410         array('text'=>__('User name:'), 'for'=>"text_username"),
 411         array(
 412             'type'=>'text',
 413             'name'=>'username',
 414             'id'=>'text_username',
 415             'maxlength'=>$username_length,
 416             'title'=>__('User name'),
 417             'required'=>'required'
 418         )
 419     );
 420
 421     $html .= PMA_getHtmlForAddUserInputDiv(
 422         array('text'=>__('Password:'), 'for'=>"text_pma_pw"),
 423         array(
 424             'type'=>'password',
 425             'name'=>'pma_pw',
 426             'id'=>'text_pma_pw',
 427             'title'=>__('Password'),
 428             'required'=>'required'
 429         )
 430     );
 431
 432     $html .= PMA_getHtmlForAddUserInputDiv(
 433         array('text'=>__('Host:'), 'for'=>"text_hostname"),
 434         array(
 435             'type'=>'text',
 436             'name'=>'hostname',
 437             'id'=>'text_hostname',
 438             'maxlength'=>$hostname_length,
 439             'value'=>'',
 440             'required'=>'required'
 441         )
 442     );
 443
 444     $html .= PMA_getHtmlForAddUserInputDiv(
 445         array('text'=>__('Port:'), 'for'=>"text_port"),
 446         array(
 447             'type'=>'number',
 448             'name'=>'text_port',
 449             'id'=>'text_port',
 450             'maxlength'=>6,
 451             'value'=>'3306',
 452             'required'=>'required'
 453          )
 454     );
 455
 456     $html .= ' </fieldset>';
 457     $html .= ' <fieldset id="fieldset_user_privtable_footer" class="tblFooters">';
 458     $html .= '    <input type="hidden" name="sr_take_action" value="true" />';
 459     $html .= '     <input type="hidden" name="' . $submitname . '" value="1" />';
 460     $html .= '     <input type="submit" id="confslave_submit" value="';
 461     $html .= __('Go') . '" />';
 462     $html .= ' </fieldset>';
 463     $html .= '</form>';
 464
 465     return $html;
 466 }
 467
 468 /**
 469  * returns HTML code for Add user input div
 470  *
 471  * @param Array $label_array label tag elements
 472  * @param Array $input_array input tag elements
 473  *
 474  * @return String HTML code
 475  */
 476 function PMA_getHtmlForAddUserInputDiv($label_array, $input_array)
 477 {
 478     $html  = '  <div class="item">';
 479     $html .= '     <label for="' . $label_array['for'] . '">';
 480     $html .=  $label_array['text'] . '</label>';
 481
 482     $html .= '    <input ';
 483     foreach ($input_array as $key=>$value) {
 484         $html .= ' ' . $key . '="' . $value . '" ';
 485     }
 486     $html .= ' />';
 487     $html .= '  </div>';
 488     return $html;
 489 }
 490
 491 /**
 492  * This function returns html code for table with replication status.
 493  *
 494  * @param string  $type   either master or slave
 495  * @param boolean $hidden if true, then default style is set to hidden,
 496  *                        default value false
 497  * @param boolean $title  if true, then title is displayed, default true
 498  *
 499  * @return String HTML code
 500  */
 501 function PMA_getHtmlForReplicationStatusTable($type, $hidden = false, $title = true)
 502 {
 503     global ${"{$type}_variables"};
 504     global ${"{$type}_variables_alerts"};
 505     global ${"{$type}_variables_oks"};
 506     global ${"server_{$type}_replication"};
 507     global ${"strReplicationStatus_{$type}"};
 508
 509     $html = '';
 510
 511     // TODO check the Masters server id?
 512     // seems to default to '1' when queried via SHOW VARIABLES ,
 513     // but resulted in error on the master when slave connects
 514     // [ERROR] Error reading packet from server: Misconfigured master
 515     // - server id was not set ( server_errno=1236)
 516     // [ERROR] Got fatal error 1236: 'Misconfigured master
 517     // - server id was not set' from master when reading data from binary log
 518     //
 519     //$server_id = $GLOBALS['dbi']->fetchValue(
 520     //    "SHOW VARIABLES LIKE 'server_id'", 0, 1
 521     //);
 522
 523     $html .= '<div id="replication_' . $type . '_section" style="';
 524     $html .= ($hidden ? 'display: none;' : '') . '"> ';
 525
 526     if ($title) {
 527         if ($type == 'master') {
 528             $html .= '<h4><a name="replication_' . $type . '"></a>';
 529             $html .= __('Master status') . '</h4>';
 530         } else {
 531             $html .= '<h4><a name="replication_' . $type . '"></a>';
 532             $html .= __('Slave status') . '</h4>';
 533         }
 534     } else {
 535         $html .= '<br />';
 536     }
 537
 538     $html .= '   <table id="server' . $type . 'replicationsummary" class="data"> ';
 539     $html .= '   <thead>';
 540     $html .= '    <tr>';
 541     $html .= '     <th>' . __('Variable') . '</th>';
 542     $html .= '        <th>' . __('Value') . '</th>';
 543     $html .= '    </tr>';
 544     $html .= '   </thead>';
 545     $html .= '   <tbody>';
 546
 547     $odd_row = true;
 548     foreach (${"{$type}_variables"} as $variable) {
 549         $html .= '   <tr class="' . ($odd_row ? 'odd' : 'even') . '">';
 550         $html .= '     <td class="name">';
 551         $html .=        $variable;
 552         $html .= '     </td>';
 553         $html .= '     <td class="value">';
 554
 555         // TODO change to regexp or something, to allow for negative match
 556         if (isset(${"{$type}_variables_alerts"}[$variable])
 557             && ${"{$type}_variables_alerts"}[$variable] == ${"server_{$type}_replication"}[0][$variable]
 558         ) {
 559             $html .= '<span class="attention">';
 560
 561         } elseif (isset(${"{$type}_variables_oks"}[$variable])
 562             && ${"{$type}_variables_oks"}[$variable] == ${"server_{$type}_replication"}[0][$variable]
 563         ) {
 564             $html .= '<span class="allfine">';
 565         } else {
 566             $html .= '<span>';
 567         }
 568         // allow wrapping long table lists into multiple lines
 569         static $variables_wrap = array(
 570             'Replicate_Do_DB', 'Replicate_Ignore_DB',
 571             'Replicate_Do_Table', 'Replicate_Ignore_Table',
 572             'Replicate_Wild_Do_Table', 'Replicate_Wild_Ignore_Table');
 573         if (in_array($variable, $variables_wrap)) {
 574             $html .= str_replace(
 575                 ',',
 576                 ', ',
 577                 ${"server_{$type}_replication"}[0][$variable]
 578             );
 579         } else {
 580             $html .= ${"server_{$type}_replication"}[0][$variable];
 581         }
 582         $html .= '</span>';
 583
 584         $html .= '  </td>';
 585         $html .= ' </tr>';
 586
 587         $odd_row = ! $odd_row;
 588     }
 589
 590     $html .= '   </tbody>';
 591     $html .= ' </table>';
 592     $html .= ' <br />';
 593     $html .= '</div>';
 594
 595     return $html;
 596 }
 597
 598 /**
 599  * returns html code for table with slave users connected to this master
 600  *
 601  * @param boolean $hidden - if true, then default style is set to hidden,
 602  *                        - default value false
 603  *
 604  * @return string
 605  */
 606 function PMA_getHtmlForReplicationSlavesTable($hidden = false)
 607 {
 608     $html = '';
 609     // Fetch data
 610     $data = $GLOBALS['dbi']->fetchResult('SHOW SLAVE HOSTS', null, null);
 611
 612     $html .= '  <br />';
 613     $html .= '  <div id="replication_slaves_section" style="';
 614     $html .=  ($hidden ? 'display: none;' : '') . '"> ';
 615     $html .= '    <table class="data">';
 616     $html .= '    <thead>';
 617     $html .= '      <tr>';
 618     $html .= '        <th>' . __('Server ID') . '</th>';
 619     $html .= '        <th>' . __('Host') . '</th>';
 620     $html .= '      </tr>';
 621     $html .= '    </thead>';
 622     $html .= '    <tbody>';
 623
 624     $odd_row = true;
 625     foreach ($data as $slave) {
 626         $html .= '    <tr class="' . ($odd_row ? 'odd' : 'even') . '">';
 627         $html .= '      <td class="value">' . $slave['Server_id'] . '</td>';
 628         $html .= '      <td class="value">' . $slave['Host'] . '</td>';
 629         $html .= '    </tr>';
 630
 631         $odd_row = ! $odd_row;
 632     }
 633
 634     $html .= '    </tbody>';
 635     $html .= '    </table>';
 636     $html .= '    <br />';
 637     $html .= PMA_Message::notice(
 638         __(
 639             'Only slaves started with the '
 640             . '--report-host=host_name option are visible in this list.'
 641         )
 642     )->getDisplay();
 643     $html .= '    <br />';
 644     $html .= '  </div>';
 645
 646     return $html;
 647 }
 648
 649 /**
 650  * get the correct username and hostname lengths for this MySQL server
 651  *
 652  * @return array   username length, hostname length
 653  */
 654 function PMA_replicationGetUsernameHostnameLength()
 655 {
 656     $fields_info = $GLOBALS['dbi']->getColumns('mysql', 'user');
 657     $username_length = 16;
 658     $hostname_length = 41;
 659     foreach ($fields_info as $val) {
 660         if ($val['Field'] == 'User') {
 661             strtok($val['Type'], '()');
 662             $v = strtok('()');
 663             if (is_int($v)) {
 664                 $username_length = $v;
 665             }
 666         } elseif ($val['Field'] == 'Host') {
 667             strtok($val['Type'], '()');
 668             $v = strtok('()');
 669             if (is_int($v)) {
 670                 $hostname_length = $v;
 671             }
 672         }
 673     }
 674     return array($username_length, $hostname_length);
 675 }
 676
 677 /**
 678  * returns html code to add a replication slave user to the master
 679  *
 680  * @return String HTML code
 681  */
 682 function PMA_getHtmlForReplicationMasterAddSlaveuser()
 683 {
 684     $html = '';
 685     list($username_length, $hostname_length)
 686         = PMA_replicationGetUsernameHostnameLength();
 687
 688     if (isset($_REQUEST['username'])
 689         && /*overload*/mb_strlen($_REQUEST['username']) === 0
 690     ) {
 691         $GLOBALS['pred_username'] = 'any';
 692     }
 693     $html .= '<div id="master_addslaveuser_gui">';
 694     $html .= '<form autocomplete="off" method="post" ';
 695     $html .= 'action="server_privileges.php"';
 696     $html .= ' onsubmit="return checkAddUser(this);">';
 697     $html .= PMA_URL_getHiddenInputs('', '');
 698     $html .= '<fieldset id="fieldset_add_user_login">'
 699         . '<legend>' . __('Add slave replication user') . '</legend>'
 700         . PMA_getHtmlForAddUserLoginForm($username_length)
 701         . '<div class="item">'
 702         . '<label for="select_pred_hostname">'
 703         . '    ' . __('Host:')
 704         . '</label>'
 705         . '<span class="options">'
 706         . '    <select name="pred_hostname" id="select_pred_hostname" title="'
 707         . __('Host') . '"';
 708
 709     $_current_user = $GLOBALS['dbi']->fetchValue('SELECT USER();');
 710     if (! empty($_current_user)) {
 711         $thishost = str_replace(
 712             "'",
 713             '',
 714             /*overload*/mb_substr(
 715                 $_current_user,
 716                 (/*overload*/mb_strrpos($_current_user, '@') + 1)
 717             )
 718         );
 719         if ($thishost == 'localhost' || $thishost == '127.0.0.1') {
 720             unset($thishost);
 721         }
 722     }
 723     $html .= '    onchange="if (this.value == \'any\') { hostname.value = \'%\'; } '
 724         .                  'else if (this.value == \'localhost\') '
 725         .                  '{ hostname.value = \'localhost\'; } '
 726         . (empty($thishost)
 727           ? ''
 728           : 'else if (this.value == \'thishost\') { hostname.value = \''
 729         . addslashes(htmlspecialchars($thishost)) . '\'; } ')
 730         .   'else if (this.value == \'hosttable\') { hostname.value = \'\'; } '
 731         .   'else if (this.value == \'userdefined\') '
 732         .   '{ hostname.focus(); hostname.select(); }">'
 733         . "\n";
 734     unset($_current_user);
 735
 736     // when we start editing a user, $GLOBALS['pred_hostname'] is not defined
 737     if (! isset($GLOBALS['pred_hostname']) && isset($_REQUEST['hostname'])) {
 738         switch (/*overload*/mb_strtolower($_REQUEST['hostname'])) {
 739         case 'localhost':
 740         case '127.0.0.1':
 741             $GLOBALS['pred_hostname'] = 'localhost';
 742             break;
 743         case '%':
 744             $GLOBALS['pred_hostname'] = 'any';
 745             break;
 746         default:
 747             $GLOBALS['pred_hostname'] = 'userdefined';
 748             break;
 749         }
 750     }
 751     $html .= '        <option value="any"'
 752         . ((isset($GLOBALS['pred_hostname']) && $GLOBALS['pred_hostname'] == 'any')
 753         ? ' selected="selected"' : '') . '>' . __('Any host')
 754         . '</option>'
 755         . '        <option value="localhost"'
 756         . ((isset($GLOBALS['pred_hostname'])
 757             && $GLOBALS['pred_hostname'] == 'localhost')
 758         ? ' selected="selected"' : '') . '>' . __('Local')
 759         . '</option>';
 760
 761     if (!empty($thishost)) {
 762         $html .= '        <option value="thishost"'
 763             . ((isset($GLOBALS['pred_hostname'])
 764                 && $GLOBALS['pred_hostname'] == 'thishost')
 765             ? ' selected="selected"' : '') . '>' . __('This Host')
 766             . '</option>';
 767     }
 768     unset($thishost);
 769
 770     $html .= PMA_getHtmlForTableInfoForm($hostname_length);
 771     $html .= '</form>';
 772     $html .= '</div>';
 773
 774     return $html;
 775 }
 776 /**
 777  *  returns html code to add a replication slave user to the master
 778  *
 779  * @param int $username_length Username length
 780  *
 781  * @return String HTML code
 782  */
 783 function PMA_getHtmlForAddUserLoginForm($username_length)
 784 {
 785     $html = '<input type="hidden" name="grant_count" value="25" />'
 786         . '<input type="hidden" name="createdb" id="createdb_0" value="0" />'
 787         . '<input id="checkbox_Repl_slave_priv" type="hidden"'
 788         . ' title="Needed for the replication slaves." '
 789         . 'value="Y" name="Repl_slave_priv"/>'
 790         . '<input id="checkbox_Repl_client_priv" type="hidden" '
 791         . 'title="Needed for the replication slaves."'
 792         . ' value="Y" name="Repl_client_priv"/> '
 793         . '<input type="hidden" name="sr_take_action" value="true" />'
 794         . '<div class="item">'
 795         . '<label for="select_pred_username">'
 796         . '    ' . __('User name:')
 797         . '</label>'
 798         . '<span class="options">'
 799         . '    <select name="pred_username" id="select_pred_username" '
 800         .         'title="' . __('User name') . '"'
 801         . '        onchange="if (this.value == \'any\') { username.value = \'\'; } '
 802         .                   'else if (this.value == \'userdefined\') { '
 803         .                       ' username.focus(); username.select(); }">'
 804         . '        <option value="any"'
 805         . ((isset($GLOBALS['pred_username'])
 806             && $GLOBALS['pred_username'] == 'any') ? ' selected="selected"' : '')
 807         . '>' . __('Any user') . '</option>'
 808         . '        <option value="userdefined"'
 809         . ((! isset($GLOBALS['pred_username'])
 810             || $GLOBALS['pred_username'] == 'userdefined')
 811             ? ' selected="selected"' : '')
 812         . '>' . __('Use text field:') . '</option>'
 813         . '    </select>'
 814         . '</span>'
 815         . '<input type="text" name="username" maxlength="'
 816         . $username_length . '" title="' . __('User name') . '"'
 817         . (empty($_REQUEST['username']) ? '' : ' value="'
 818         . (isset($GLOBALS['new_username'])
 819             ? $GLOBALS['new_username']
 820             : $_REQUEST['username']) . '"')
 821         . ' onchange="pred_username.value = \'userdefined\';" />'
 822         . '</div>';
 823
 824     return $html;
 825 }
 826
 827 /**
 828  * returns HTML for TableInfoForm
 829  *
 830  * @param int $hostname_length Selected hostname length
 831  *
 832  * @return String HTML code
 833  */
 834 function PMA_getHtmlForTableInfoForm($hostname_length)
 835 {
 836     $html = '        <option value="hosttable"'
 837         . ((isset($GLOBALS['pred_hostname'])
 838             && $GLOBALS['pred_hostname'] == 'hosttable')
 839         ? ' selected="selected"' : '') . '>' . __('Use Host Table')
 840         . '</option>'
 841         . '        <option value="userdefined"'
 842         . ((isset($GLOBALS['pred_hostname'])
 843             && $GLOBALS['pred_hostname'] == 'userdefined')
 844         ? ' selected="selected"' : '')
 845         . '>' . __('Use text field:') . '</option>'
 846         . '    </select>'
 847         . '</span>'
 848         . '<input type="text" name="hostname" maxlength="'
 849         . $hostname_length . '" value="'
 850         . (isset($_REQUEST['hostname']) ? $_REQUEST['hostname'] : '')
 851         . '" title="' . __('Host')
 852         . '" onchange="pred_hostname.value = \'userdefined\';" />'
 853         . PMA_Util::showHint(
 854             __(
 855                 'When Host table is used, this field is ignored '
 856                 . 'and values stored in Host table are used instead.'
 857             )
 858         )
 859         . '</div>'
 860         . '<div class="item">'
 861         . '<label for="select_pred_password">'
 862         . '    ' . __('Password:')
 863         . '</label>'
 864         . '<span class="options">'
 865         . '    <select name="pred_password" id="select_pred_password" title="'
 866         . __('Password') . '"'
 867         . '            onchange="if (this.value == \'none\') '
 868         .                       '{ pma_pw.value = \'\'; pma_pw2.value = \'\'; } '
 869         .                       'else if (this.value == \'userdefined\') '
 870         .                       '{ pma_pw.focus(); pma_pw.select(); }">'
 871         . '        <option value="none"';
 872     if (isset($_REQUEST['username'])) {
 873         $html .= '  selected="selected"';
 874     }
 875     $html .= '>' . __('No Password') . '</option>'
 876         . '        <option value="userdefined"'
 877         . (isset($_REQUEST['username']) ? '' : ' selected="selected"')
 878         . '>' . __('Use text field:') . '</option>'
 879         . '    </select>'
 880         . '</span>'
 881         . '<input type="password" id="text_pma_pw" name="pma_pw" title="'
 882         . __('Password') . '" onchange="pred_password.value = \'userdefined\';" />'
 883         . '</div>'
 884         . '<div class="item">'
 885         . '<label for="text_pma_pw2">'
 886         . '    ' . __('Re-type:')
 887         . '</label>'
 888         . '<span class="options">&nbsp;</span>'
 889         . '<input type="password" name="pma_pw2" id="text_pma_pw2" title="'
 890         . __('Re-type') . '" onchange="pred_password.value = \'userdefined\';" />'
 891         . '</div>'
 892         . '<div class="item">'
 893         . '<label for="button_generate_password">'
 894         . '    ' . __('Generate Password:')
 895         . '</label>'
 896         . '<span class="options">'
 897         . '    <input type="button" class="button" '
 898         . 'id="button_generate_password" value="' . __('Generate')
 899         . '" onclick="suggestPassword(this.form)" />'
 900         . '</span>'
 901         . '<input type="text" name="generated_pw" id="generated_pw" />'
 902         . '</div>'
 903         . '</fieldset>';
 904     $html .= '<fieldset id="fieldset_user_privtable_footer" class="tblFooters">'
 905         . '    <input type="hidden" name="adduser_submit" value="1" />'
 906         . '    <input type="submit" id="adduser_submit" value="' . __('Go') . '" />'
 907         . '</fieldset>';
 908     return $html;
 909 }
 910
 911 /**
 912  * handle control requests
 913  *
 914  * @return NULL
 915  */
 916 function PMA_handleControlRequest()
 917 {
 918     if (isset($_REQUEST['sr_take_action'])) {
 919         $refresh = false;
 920         $result = null;
 921         $messageSuccess = null;
 922         $messageError = null;
 923
 924         if (isset($_REQUEST['slave_changemaster'])) {
 925             $result = PMA_handleRequestForSlaveChangeMaster();
 926         } elseif (isset($_REQUEST['sr_slave_server_control'])) {
 927             $result = PMA_handleRequestForSlaveServerControl();
 928             $refresh = true;
 929
 930             switch ($_REQUEST['sr_slave_action']) {
 931             case 'start':
 932                 $messageSuccess = __('Replication started successfully.');
 933                 $messageError = __('Error starting replication.');
 934                 break;
 935             case 'stop':
 936                 $messageSuccess = __('Replication stopped successfully.');
 937                 $messageError = __('Error stopping replication.');
 938                 break;
 939             case 'reset':
 940                 $messageSuccess = __('Replication resetting successfully.');
 941                 $messageError = __('Error resetting replication.');
 942                 break;
 943             default:
 944                 $messageSuccess = __('Success.');
 945                 $messageError = __('Error.');
 946                 break;
 947             }
 948         } elseif (isset($_REQUEST['sr_slave_skip_error'])) {
 949             $result = PMA_handleRequestForSlaveSkipError();
 950         }
 951
 952         if ($refresh) {
 953             $response = PMA_Response::getInstance();
 954             if ($response->isAjax()) {
 955                 $response->isSuccess($result);
 956                 $response->addJSON(
 957                     'message',
 958                     $result
 959                     ? PMA_Message::success($messageSuccess)
 960                     : PMA_Message::error($messageError)
 961                 );
 962             } else {
 963                 PMA_sendHeaderLocation(
 964                     $GLOBALS['cfg']['PmaAbsoluteUri'] . 'server_replication.php'
 965                     . PMA_URL_getCommon($GLOBALS['url_params'], 'text')
 966                 );
 967             }
 968         }
 969         unset($refresh);
 970     }
 971 }
 972 /**
 973  * handle control requests for Slave Change Master
 974  *
 975  * @return boolean
 976  */
 977 function PMA_handleRequestForSlaveChangeMaster()
 978 {
 979     $sr = array();
 980     $_SESSION['replication']['m_username'] = $sr['username']
 981         = PMA_Util::sqlAddSlashes($_REQUEST['username']);
 982     $_SESSION['replication']['m_password'] = $sr['pma_pw']
 983         = PMA_Util::sqlAddSlashes($_REQUEST['pma_pw']);
 984     $_SESSION['replication']['m_hostname'] = $sr['hostname']
 985         = PMA_Util::sqlAddSlashes($_REQUEST['hostname']);
 986     $_SESSION['replication']['m_port']     = $sr['port']
 987         = PMA_Util::sqlAddSlashes($_REQUEST['text_port']);
 988     $_SESSION['replication']['m_correct']  = '';
 989     $_SESSION['replication']['sr_action_status'] = 'error';
 990     $_SESSION['replication']['sr_action_info'] = __('Unknown error');
 991
 992     // Attempt to connect to the new master server
 993     $link_to_master = PMA_Replication_connectToMaster(
 994         $sr['username'], $sr['pma_pw'], $sr['hostname'], $sr['port']
 995     );
 996
 997     if (! $link_to_master) {
 998         $_SESSION['replication']['sr_action_status'] = 'error';
 999         $_SESSION['replication']['sr_action_info'] = sprintf(
1000             __('Unable to connect to master %s.'),
1001             htmlspecialchars($sr['hostname'])
1002         );
1003     } else {
1004         // Read the current master position
1005         $position = PMA_Replication_Slave_binLogMaster($link_to_master);
1006
1007         if (empty($position)) {
1008             $_SESSION['replication']['sr_action_status'] = 'error';
1009             $_SESSION['replication']['sr_action_info']
1010                 = __(
1011                     'Unable to read master log position. '
1012                     . 'Possible privilege problem on master.'
1013                 );
1014         } else {
1015             $_SESSION['replication']['m_correct']  = true;
1016
1017             if (! PMA_Replication_Slave_changeMaster(
1018                 $sr['username'],
1019                 $sr['pma_pw'],
1020                 $sr['hostname'],
1021                 $sr['port'],
1022                 $position,
1023                 true,
1024                 false
1025             )
1026             ) {
1027                 $_SESSION['replication']['sr_action_status'] = 'error';
1028                 $_SESSION['replication']['sr_action_info']
1029                     = __('Unable to change master!');
1030             } else {
1031                 $_SESSION['replication']['sr_action_status'] = 'success';
1032                 $_SESSION['replication']['sr_action_info'] = sprintf(
1033                     __('Master server changed successfully to %s.'),
1034                     htmlspecialchars($sr['hostname'])
1035                 );
1036             }
1037         }
1038     }
1039
1040     return $_SESSION['replication']['sr_action_status'] === 'success';
1041 }
1042
1043 /**
1044  * handle control requests for Slave Server Control
1045  *
1046  * @return boolean
1047  */
1048 function PMA_handleRequestForSlaveServerControl()
1049 {
1050     if (empty($_REQUEST['sr_slave_control_parm'])) {
1051         $_REQUEST['sr_slave_control_parm'] = null;
1052     }
1053     if ($_REQUEST['sr_slave_action'] == 'reset') {
1054         $qStop = PMA_Replication_Slave_control("STOP");
1055         $qReset = $GLOBALS['dbi']->tryQuery("RESET SLAVE;");
1056         $qStart = PMA_Replication_Slave_control("START");
1057
1058         $result = ($qStop !== false && $qStop !== -1 &&
1059             $qReset !== false && $qReset !== -1 &&
1060             $qStart !== false && $qStart !== -1);
1061     } else {
1062         $qControl = PMA_Replication_Slave_control(
1063             $_REQUEST['sr_slave_action'],
1064             $_REQUEST['sr_slave_control_parm']
1065         );
1066
1067         $result = ($qControl !== false && $qControl !== -1);
1068     }
1069
1070     return $result;
1071 }
1072
1073 /**
1074  * handle control requests for Slave Skip Error
1075  *
1076  * @return boolean
1077  */
1078 function PMA_handleRequestForSlaveSkipError()
1079 {
1080     $count = 1;
1081     if (isset($_REQUEST['sr_skip_errors_count'])) {
1082         $count = $_REQUEST['sr_skip_errors_count'] * 1;
1083     }
1084
1085     $qStop = PMA_Replication_Slave_control("STOP");
1086     $qSkip = $GLOBALS['dbi']->tryQuery(
1087         "SET GLOBAL SQL_SLAVE_SKIP_COUNTER = " . $count . ";"
1088     );
1089     $qStart = PMA_Replication_Slave_control("START");
1090
1091     $result = ($qStop !== false && $qStop !== -1 &&
1092         $qSkip !== false && $qSkip !== -1 &&
1093         $qStart !== false && $qStart !== -1);
1094
1095     return $result;
1096 }