server_variables.php

   1 <?php
   2 /* vim: set expandtab sw=4 ts=4 sts=4: */
   3 /**
   4  * Server variables
   5  *
   6  * @package PhpMyAdmin
   7  */
   8
   9 require_once 'libraries/common.inc.php';
  10
  11 $response = PMA_Response::getInstance();
  12 $header   = $response->getHeader();
  13 $scripts  = $header->getScripts();
  14 $scripts->addFile('server_variables.js');
  15
  16 /**
  17  * Does the common work
  18  */
  19 require 'libraries/server_common.inc.php';
  20
  21 /**
  22  * Required to display documentation links
  23  */
  24 require 'libraries/server_variables_doc.php';
  25
  26 /**
  27  * Ajax request
  28  */
  29
  30 if (isset($_REQUEST['ajax_request']) && $_REQUEST['ajax_request'] == true) {
  31     $response = PMA_Response::getInstance();
  32
  33     if (isset($_REQUEST['type'])) {
  34         if ($_REQUEST['type'] === 'getval') {
  35             // Send with correct charset
  36             header('Content-Type: text/html; charset=UTF-8');
  37             $varValue = PMA_DBI_fetch_single_row(
  38                 'SHOW GLOBAL VARIABLES WHERE Variable_name="'
  39                 . PMA_Util::sqlAddSlashes($_REQUEST['varName']) . '";',
  40                 'NUM'
  41             );
  42             if (isset($VARIABLE_DOC_LINKS[$_REQUEST['varName']][3])
  43                 && $VARIABLE_DOC_LINKS[$_REQUEST['varName']][3] == 'byte'
  44             ) {
  45                 $response->addJSON(
  46                     'message',
  47                     implode(
  48                         ' ', PMA_Util::formatByteDown($varValue[1], 3, 3)
  49                     )
  50                 );
  51             } else {
  52                 $response->addJSON(
  53                     'message',
  54                     $varValue[1]
  55                 );
  56             }
  57         } else if ($_REQUEST['type'] === 'setval') {
  58             $value = $_REQUEST['varValue'];
  59
  60             if (isset($VARIABLE_DOC_LINKS[$_REQUEST['varName']][3])
  61                 && $VARIABLE_DOC_LINKS[$_REQUEST['varName']][3] == 'byte'
  62                 && preg_match(
  63                     '/^\s*(\d+(\.\d+)?)\s*(mb|kb|mib|kib|gb|gib)\s*$/i',
  64                     $value,
  65                     $matches
  66                 )
  67             ) {
  68                 $exp = array(
  69                     'kb' => 1,
  70                     'kib' => 1,
  71                     'mb' => 2,
  72                     'mib' => 2,
  73                     'gb' => 3,
  74                     'gib' => 3
  75                 );
  76                 $value = floatval($matches[1]) * PMA_Util::pow(
  77                     1024,
  78                     $exp[strtolower($matches[3])]
  79                 );
  80             } else {
  81                 $value = PMA_Util::sqlAddSlashes($value);
  82             }
  83
  84             if (! is_numeric($value)) {
  85                 $value="'" . $value . "'";
  86             }
  87
  88             if (! preg_match("/[^a-zA-Z0-9_]+/", $_REQUEST['varName'])
  89                 && PMA_DBI_query(
  90                     'SET GLOBAL ' . $_REQUEST['varName'] . ' = ' . $value
  91                 )
  92             ) {
  93                 // Some values are rounded down etc.
  94                 $varValue = PMA_DBI_fetch_single_row(
  95                     'SHOW GLOBAL VARIABLES WHERE Variable_name="'
  96                     . PMA_Util::sqlAddSlashes($_REQUEST['varName'])
  97                     . '";', 'NUM'
  98                 );
  99                 $response->addJSON(
 100                     'variable',
 101                     formatVariable($_REQUEST['varName'], $varValue[1])
 102                 );
 103             } else {
 104                 $response->isSuccess(false);
 105                 $response->addJSON(
 106                     'error',
 107                     __('Setting variable failed')
 108                 );
 109             }
 110         }
 111         exit;
 112     }
 113 }
 114
 115 /**
 116  * Displays the sub-page heading
 117  */
 118 $output = '<h2>' . PMA_Util::getImage('s_vars.png')
 119     . '' . __('Server variables and settings') . "\n"
 120     . PMA_Util::showMySQLDocu(
 121         'server_system_variables', 'server_system_variables'
 122     )
 123     . '</h2>' . "\n";
 124
 125 /**
 126  * Link templates
 127  */
 128 $url = htmlspecialchars('server_variables.php?' . PMA_generate_common_url());
 129 $output .= '<a style="display: none;" href="#" class="editLink">';
 130 $output .= PMA_Util::getIcon('b_edit.png', __('Edit')) . '</a>';
 131 $output .= '<a style="display: none;" href="' . $url . '" class="ajax saveLink">';
 132 $output .= PMA_Util::getIcon('b_save.png', __('Save')) . '</a> ';
 133 $output .= '<a style="display: none;" href="#" class="cancelLink">';
 134 $output .= PMA_Util::getIcon('b_close.png', __('Cancel')) . '</a> ';
 135 $output .= PMA_Util::getImage(
 136     'b_help.png',
 137     __('Documentation'),
 138     array(
 139         'style' => 'display:none',
 140         'id' => 'docImage'
 141     )
 142 );
 143
 144 /**
 145  * Sends the queries and buffers the results
 146  */
 147 $serverVarsSession = PMA_DBI_fetch_result('SHOW SESSION VARIABLES;', 0, 1);
 148 $serverVars = PMA_DBI_fetch_result('SHOW GLOBAL VARIABLES;', 0, 1);
 149
 150
 151 /**
 152  * Displays the page
 153  */
 154 $value = ! empty($_REQUEST['filter']) ? htmlspecialchars($_REQUEST['filter']) : '';
 155 $output .= '<fieldset id="tableFilter">'
 156     . '<legend>' . __('Filters') . '</legend>'
 157     . '<div class="formelement">'
 158     . '<label for="filterText">' .  __('Containing the word:') . '</label>'
 159     . '<input name="filterText" type="text" id="filterText"'
 160     . ' style="vertical-align: baseline;" value="' . $value . '" />'
 161     . '</div>'
 162     . '</fieldset>';
 163
 164 $output .= '<div id="serverVariables" class="data filteredData noclick">'
 165     . '<div class="var-header var-row">'
 166     . '<div class="var-name">' .  __('Variable') . '</div>'
 167     . '<div class="var-value valueHeader">'
 168     . __('Session value') . ' / ' . __('Global value')
 169     . '</div>'
 170     . '<div style="clear:both"></div>'
 171     . '</div>';
 172
 173 $odd_row = true;
 174 foreach ($serverVars as $name => $value) {
 175     $has_session_value = isset($serverVarsSession[$name])
 176         && $serverVarsSession[$name] != $value;
 177     $row_class = ($odd_row ? ' odd' : ' even')
 178         . ($has_session_value ? ' diffSession' : '');
 179
 180     $output .= '<div class="var-row' . $row_class . '">'
 181         . '<div class="var-name">';
 182
 183     // To display variable documentation link
 184     if (isset($VARIABLE_DOC_LINKS[$name])) {
 185         $output .= '<span title="' . htmlspecialchars(str_replace('_', ' ', $name)) . '">';
 186         $output .= PMA_Util::showMySQLDocu(
 187             $VARIABLE_DOC_LINKS[$name][1],
 188             $VARIABLE_DOC_LINKS[$name][1],
 189             false,
 190             $VARIABLE_DOC_LINKS[$name][2] . '_' . $VARIABLE_DOC_LINKS[$name][0],
 191             true
 192         );
 193         $output .= htmlspecialchars(str_replace('_', ' ', $name));
 194         $output .= '</a>';
 195         $output .= '</span>';
 196     } else {
 197         $output .= htmlspecialchars(str_replace('_', ' ', $name));
 198     }
 199     $output .= '</div>'
 200         . '<div class="var-value value' . (PMA_isSuperuser() ? ' editable' : '') . '">&nbsp;'
 201         . formatVariable($name, $value)
 202         . '</div>'
 203         . '<div style="clear:both"></div>'
 204         . '</div>';
 205
 206     if ($has_session_value) {
 207         $output .= '<div class="var-row' . ($odd_row ? ' odd' : ' even') . '">'
 208             . '<div class="var-name session">(' . __('Session value') . ')</div>'
 209             . '<div class="var-value value">&nbsp;' . formatVariable($name, $serverVarsSession[$name]) . '</div>'
 210             . '<div style="clear:both"></div>'
 211             . '</div>';
 212     }
 213
 214     $odd_row = ! $odd_row;
 215 }
 216 $output .= '</div>';
 217
 218 $response->addHtml($output);
 219
 220 /**
 221  * Format Variable
 222  *
 223  * @param string  $name  variable name
 224  * @param numeric $value variable value
 225  *
 226  * @return formatted string
 227  */
 228 function formatVariable($name, $value)
 229 {
 230     global $VARIABLE_DOC_LINKS;
 231
 232     if (is_numeric($value)) {
 233         if (isset($VARIABLE_DOC_LINKS[$name][3])
 234             && $VARIABLE_DOC_LINKS[$name][3]=='byte'
 235         ) {
 236             return '<abbr title="'
 237                 . PMA_Util::formatNumber($value, 0) . '">'
 238                 . implode(' ', PMA_Util::formatByteDown($value, 3, 3))
 239                 . '</abbr>';
 240         } else {
 241             return PMA_Util::formatNumber($value, 0);
 242         }
 243     }
 244     return htmlspecialchars($value);
 245 }
 246
 247 ?>