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relation.lib.php
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<?php
/* vim: set expandtab sw=4 ts=4 sts=4: */
/**
* Set of functions used with the relation and pdf feature
*
* @package PhpMyAdmin
*/
use PMA\libraries\Message;
use PMA\libraries\Table;
use PMA\libraries\RecentFavoriteTable;
use PMA\libraries\URL;
/**
* Executes a query as controluser if possible, otherwise as normal user
*
* @param string $sql the query to execute
* @param boolean $show_error whether to display SQL error messages or not
* @param int $options query options
*
* @return resource|boolean the result set, or false if no result set
*
* @access public
*
*/
function PMA_queryAsControlUser($sql, $show_error = true, $options = 0)
{
// Avoid caching of the number of rows affected; for example, this function
// is called for tracking purposes but we want to display the correct number
// of rows affected by the original query, not by the query generated for
// tracking.
$cache_affected_rows = false;
if ($show_error) {
$result = $GLOBALS['dbi']->query(
$sql,
$GLOBALS['controllink'],
$options,
$cache_affected_rows
);
} else {
$result = @$GLOBALS['dbi']->tryQuery(
$sql,
$GLOBALS['controllink'],
$options,
$cache_affected_rows
);
} // end if... else...
if ($result) {
return $result;
} else {
return false;
}
} // end of the "PMA_queryAsControlUser()" function
/**
* Returns current relation parameters
*
* @return array $cfgRelation
*/
function PMA_getRelationsParam()
{
if (empty($_SESSION['relation'][$GLOBALS['server']])
|| (empty($_SESSION['relation'][$GLOBALS['server']]['PMA_VERSION']))
|| $_SESSION['relation'][$GLOBALS['server']]['PMA_VERSION'] != PMA_VERSION
) {
$_SESSION['relation'][$GLOBALS['server']] = PMA_checkRelationsParam();
}
// just for BC but needs to be before PMA_getRelationsParamDiagnostic()
// which uses it
$GLOBALS['cfgRelation'] = $_SESSION['relation'][$GLOBALS['server']];
return $_SESSION['relation'][$GLOBALS['server']];
}
/**
* prints out diagnostic info for pma relation feature
*
* @param array $cfgRelation Relation configuration
*
* @return string
*/
function PMA_getRelationsParamDiagnostic($cfgRelation)
{
$retval = '<br>';
$messages = array();
$messages['error'] = '<span style="color:red"><strong>'
. __('not OK')
. '</strong></span>';
$messages['ok'] = '<span style="color:green"><strong>'
. _pgettext('Correctly working', 'OK')
. '</strong></span>';
$messages['enabled'] = '<span style="color:green">' . __('Enabled') . '</span>';
$messages['disabled'] = '<span style="color:red">' . __('Disabled') . '</span>';
if (empty($cfgRelation['db'])) {
$retval .= __('Configuration of pmadb…') . ' '
. $messages['error']
. PMA\libraries\Util::showDocu('setup', 'linked-tables')
. '<br />' . "\n"
. __('General relation features')
. ' <font color="green">' . __('Disabled')
. '</font>' . "\n";
if ($GLOBALS['cfg']['ZeroConf']) {
if (empty($GLOBALS['db'])) {
$retval .= PMA_getHtmlFixPMATables(true, true);
} else {
$retval .= PMA_getHtmlFixPMATables(true);
}
}
} else {
$retval .= '<table>' . "\n";
if (! $cfgRelation['allworks']
&& $GLOBALS['cfg']['ZeroConf']
// Avoid showing a "Create missing tables" link if it's a
// problem of missing definition
&& PMA_arePmadbTablesDefined()
) {
$retval .= PMA_getHtmlFixPMATables(false);
$retval .= '<br />';
}
$retval .= PMA_getDiagMessageForParameter(
'pmadb',
$cfgRelation['db'],
$messages,
'pmadb'
);
$retval .= PMA_getDiagMessageForParameter(
'relation',
isset($cfgRelation['relation']),
$messages,
'relation'
);
$retval .= PMA_getDiagMessageForFeature(
__('General relation features'),
'relwork',
$messages
);
$retval .= PMA_getDiagMessageForParameter(
'table_info',
isset($cfgRelation['table_info']),
$messages,
'table_info'
);
$retval .= PMA_getDiagMessageForFeature(
__('Display Features'),
'displaywork',
$messages
);
$retval .= PMA_getDiagMessageForParameter(
'table_coords',
isset($cfgRelation['table_coords']),
$messages,
'table_coords'
);
$retval .= PMA_getDiagMessageForParameter(
'pdf_pages',
isset($cfgRelation['pdf_pages']),
$messages,
'pdf_pages'
);
$retval .= PMA_getDiagMessageForFeature(
__('Designer and creation of PDFs'),
'pdfwork',
$messages
);
$retval .= PMA_getDiagMessageForParameter(
'column_info',
isset($cfgRelation['column_info']),
$messages,
'column_info'
);
$retval .= PMA_getDiagMessageForFeature(
__('Displaying Column Comments'),
'commwork',
$messages,
false
);
$retval .= PMA_getDiagMessageForFeature(
__('Browser transformation'),
'mimework',
$messages
);
if ($cfgRelation['commwork'] && ! $cfgRelation['mimework']) {
$retval .= '<tr><td colspan=2 class="left error">';
$retval .= __(
'Please see the documentation on how to'
. ' update your column_info table.'
);
$retval .= PMA\libraries\Util::showDocu(
'config',
'cfg_Servers_column_info'
);
$retval .= '</td></tr>';
}
$retval .= PMA_getDiagMessageForParameter(
'bookmarktable',
isset($cfgRelation['bookmark']),
$messages,
'bookmark'
);
$retval .= PMA_getDiagMessageForFeature(
__('Bookmarked SQL query'),
'bookmarkwork',
$messages
);
$retval .= PMA_getDiagMessageForParameter(
'history',
isset($cfgRelation['history']),
$messages,
'history'
);
$retval .= PMA_getDiagMessageForFeature(
__('SQL history'),
'historywork',
$messages
);
$retval .= PMA_getDiagMessageForParameter(
'recent',
isset($cfgRelation['recent']),
$messages,
'recent'
);
$retval .= PMA_getDiagMessageForFeature(
__('Persistent recently used tables'),
'recentwork',
$messages
);
$retval .= PMA_getDiagMessageForParameter(
'favorite',
isset($cfgRelation['favorite']),
$messages,
'favorite'
);
$retval .= PMA_getDiagMessageForFeature(
__('Persistent favorite tables'),
'favoritework',
$messages
);
$retval .= PMA_getDiagMessageForParameter(
'table_uiprefs',
isset($cfgRelation['table_uiprefs']),
$messages,
'table_uiprefs'
);
$retval .= PMA_getDiagMessageForFeature(
__('Persistent tables\' UI preferences'),
'uiprefswork',
$messages
);
$retval .= PMA_getDiagMessageForParameter(
'tracking',
isset($cfgRelation['tracking']),
$messages,
'tracking'
);
$retval .= PMA_getDiagMessageForFeature(
__('Tracking'),
'trackingwork',
$messages
);
$retval .= PMA_getDiagMessageForParameter(
'userconfig',
isset($cfgRelation['userconfig']),
$messages,
'userconfig'
);
$retval .= PMA_getDiagMessageForFeature(
__('User preferences'),
'userconfigwork',
$messages
);
$retval .= PMA_getDiagMessageForParameter(
'users',
isset($cfgRelation['users']),
$messages,
'users'
);
$retval .= PMA_getDiagMessageForParameter(
'usergroups',
isset($cfgRelation['usergroups']),
$messages,
'usergroups'
);
$retval .= PMA_getDiagMessageForFeature(
__('Configurable menus'),
'menuswork',
$messages
);
$retval .= PMA_getDiagMessageForParameter(
'navigationhiding',
isset($cfgRelation['navigationhiding']),
$messages,
'navigationhiding'
);
$retval .= PMA_getDiagMessageForFeature(
__('Hide/show navigation items'),
'navwork',
$messages
);
$retval .= PMA_getDiagMessageForParameter(
'savedsearches',
isset($cfgRelation['savedsearches']),
$messages,
'savedsearches'
);
$retval .= PMA_getDiagMessageForFeature(
__('Saving Query-By-Example searches'),
'savedsearcheswork',
$messages
);
$retval .= PMA_getDiagMessageForParameter(
'central_columns',
isset($cfgRelation['central_columns']),
$messages,
'central_columns'
);
$retval .= PMA_getDiagMessageForFeature(
__('Managing Central list of columns'),
'centralcolumnswork',
$messages
);
$retval .= PMA_getDiagMessageForParameter(
'designer_settings',
isset($cfgRelation['designer_settings']),
$messages,
'designer_settings'
);
$retval .= PMA_getDiagMessageForFeature(
__('Remembering Designer Settings'),
'designersettingswork',
$messages
);
$retval .= PMA_getDiagMessageForParameter(
'export_templates',
isset($cfgRelation['export_templates']),
$messages,
'export_templates'
);
$retval .= PMA_getDiagMessageForFeature(
__('Saving export templates'),
'exporttemplateswork',
$messages
);
$retval .= '</table>' . "\n";
if (! $cfgRelation['allworks']) {
$retval .= '<p>' . __('Quick steps to set up advanced features:')
. '</p>';
$items = array();
$items[] = sprintf(
__(
'Create the needed tables with the '
. '<code>%screate_tables.sql</code>.'
),
htmlspecialchars(SQL_DIR)
) . ' ' . PMA\libraries\Util::showDocu('setup', 'linked-tables');
$items[] = __('Create a pma user and give access to these tables.') . ' '
. PMA\libraries\Util::showDocu('config', 'cfg_Servers_controluser');
$items[] = __(
'Enable advanced features in configuration file '
. '(<code>config.inc.php</code>), for example by '
. 'starting from <code>config.sample.inc.php</code>.'
) . ' ' . PMA\libraries\Util::showDocu('setup', 'quick-install');
$items[] = __(
'Re-login to phpMyAdmin to load the updated configuration file.'
);
$retval .= PMA\libraries\Template::get('list/unordered')->render(
array('items' => $items,)
);
}
}
return $retval;
}
/**
* prints out one diagnostic message for a feature
*
* @param string $feature_name feature name in a message string
* @param string $relation_parameter the $GLOBALS['cfgRelation'] parameter to check
* @param array $messages utility messages
* @param boolean $skip_line whether to skip a line after the message
*
* @return string
*/
function PMA_getDiagMessageForFeature($feature_name,
$relation_parameter, $messages, $skip_line = true
) {
$retval = ' <tr><td colspan=2 class="right">' . $feature_name . ': ';
if (isset($GLOBALS['cfgRelation'][$relation_parameter])
&& $GLOBALS['cfgRelation'][$relation_parameter]
) {
$retval .= $messages['enabled'];
} else {
$retval .= $messages['disabled'];
}
$retval .= '</td></tr>';
if ($skip_line) {
$retval .= '<tr><td> </td></tr>';
}
return $retval;
}
/**
* prints out one diagnostic message for a configuration parameter
*
* @param string $parameter config parameter name to display
* @param boolean $relationParameterSet whether this parameter is set
* @param array $messages utility messages
* @param string $docAnchor anchor in documentation
*
* @return string
*/
function PMA_getDiagMessageForParameter($parameter,
$relationParameterSet, $messages, $docAnchor
) {
$retval = '<tr><th class="left">';
$retval .= '$cfg[\'Servers\'][$i][\'' . $parameter . '\'] ... ';
$retval .= '</th><td class="right">';
if ($relationParameterSet) {
$retval .= $messages['ok'];
} else {
$retval .= sprintf(
$messages['error'],
PMA\libraries\Util::getDocuLink('config', 'cfg_Servers_' . $docAnchor)
);
}
$retval .= '</td></tr>' . "\n";
return $retval;
}
/**
* Defines the relation parameters for the current user
* just a copy of the functions used for relations ;-)
* but added some stuff to check what will work
*
* @access protected
* @return array the relation parameters for the current user
*/
function PMA_checkRelationsParam()
{
$cfgRelation = array();
$cfgRelation['PMA_VERSION'] = PMA_VERSION;
$workToTable = array(
'relwork' => 'relation',
'displaywork' => array('relation', 'table_info'),
'bookmarkwork' => 'bookmarktable',
'pdfwork' => array('table_coords', 'pdf_pages'),
'commwork' => 'column_info',
'mimework' => 'column_info',
'historywork' => 'history',
'recentwork' => 'recent',
'favoritework' => 'favorite',
'uiprefswork' => 'table_uiprefs',
'trackingwork' => 'tracking',
'userconfigwork' => 'userconfig',
'menuswork' => array('users', 'usergroups'),
'navwork' => 'navigationhiding',
'savedsearcheswork' => 'savedsearches',
'centralcolumnswork' => 'central_columns',
'designersettingswork' => 'designer_settings',
'exporttemplateswork' => 'export_templates',
);
foreach ($workToTable as $work => $table) {
$cfgRelation[$work] = false;
}
$cfgRelation['allworks'] = false;
$cfgRelation['user'] = null;
$cfgRelation['db'] = null;
if ($GLOBALS['server'] == 0
|| empty($GLOBALS['cfg']['Server']['pmadb'])
|| empty($GLOBALS['controllink'])
|| ! $GLOBALS['dbi']->selectDb(
$GLOBALS['cfg']['Server']['pmadb'], $GLOBALS['controllink']
)
) {
// No server selected -> no bookmark table
// we return the array with the falses in it,
// to avoid some 'Uninitialized string offset' errors later
$GLOBALS['cfg']['Server']['pmadb'] = false;
return $cfgRelation;
}
$cfgRelation['user'] = $GLOBALS['cfg']['Server']['user'];
$cfgRelation['db'] = $GLOBALS['cfg']['Server']['pmadb'];
// Now I just check if all tables that i need are present so I can for
// example enable relations but not pdf...
// I was thinking of checking if they have all required columns but I
// fear it might be too slow
$tab_query = 'SHOW TABLES FROM '
. PMA\libraries\Util::backquote(
$GLOBALS['cfg']['Server']['pmadb']
);
$tab_rs = PMA_queryAsControlUser(
$tab_query, false, PMA\libraries\DatabaseInterface::QUERY_STORE
);
if (! $tab_rs) {
// query failed ... ?
//$GLOBALS['cfg']['Server']['pmadb'] = false;
return $cfgRelation;
}
while ($curr_table = @$GLOBALS['dbi']->fetchRow($tab_rs)) {
if ($curr_table[0] == $GLOBALS['cfg']['Server']['bookmarktable']) {
$cfgRelation['bookmark'] = $curr_table[0];
} elseif ($curr_table[0] == $GLOBALS['cfg']['Server']['relation']) {
$cfgRelation['relation'] = $curr_table[0];
} elseif ($curr_table[0] == $GLOBALS['cfg']['Server']['table_info']) {
$cfgRelation['table_info'] = $curr_table[0];
} elseif ($curr_table[0] == $GLOBALS['cfg']['Server']['table_coords']) {
$cfgRelation['table_coords'] = $curr_table[0];
} elseif ($curr_table[0] == $GLOBALS['cfg']['Server']['column_info']) {
$cfgRelation['column_info'] = $curr_table[0];
} elseif ($curr_table[0] == $GLOBALS['cfg']['Server']['pdf_pages']) {
$cfgRelation['pdf_pages'] = $curr_table[0];
} elseif ($curr_table[0] == $GLOBALS['cfg']['Server']['history']) {
$cfgRelation['history'] = $curr_table[0];
} elseif ($curr_table[0] == $GLOBALS['cfg']['Server']['recent']) {
$cfgRelation['recent'] = $curr_table[0];
} elseif ($curr_table[0] == $GLOBALS['cfg']['Server']['favorite']) {
$cfgRelation['favorite'] = $curr_table[0];
} elseif ($curr_table[0] == $GLOBALS['cfg']['Server']['table_uiprefs']) {
$cfgRelation['table_uiprefs'] = $curr_table[0];
} elseif ($curr_table[0] == $GLOBALS['cfg']['Server']['tracking']) {
$cfgRelation['tracking'] = $curr_table[0];
} elseif ($curr_table[0] == $GLOBALS['cfg']['Server']['userconfig']) {
$cfgRelation['userconfig'] = $curr_table[0];
} elseif ($curr_table[0] == $GLOBALS['cfg']['Server']['users']) {
$cfgRelation['users'] = $curr_table[0];
} elseif ($curr_table[0] == $GLOBALS['cfg']['Server']['usergroups']) {
$cfgRelation['usergroups'] = $curr_table[0];
} elseif ($curr_table[0] == $GLOBALS['cfg']['Server']['navigationhiding']) {
$cfgRelation['navigationhiding'] = $curr_table[0];
} elseif ($curr_table[0] == $GLOBALS['cfg']['Server']['savedsearches']) {
$cfgRelation['savedsearches'] = $curr_table[0];
} elseif ($curr_table[0] == $GLOBALS['cfg']['Server']['central_columns']) {
$cfgRelation['central_columns'] = $curr_table[0];
} elseif ($curr_table[0] == $GLOBALS['cfg']['Server']['designer_settings']) {
$cfgRelation['designer_settings'] = $curr_table[0];
} elseif ($curr_table[0] == $GLOBALS['cfg']['Server']['export_templates']) {
$cfgRelation['export_templates'] = $curr_table[0];
}
} // end while
$GLOBALS['dbi']->freeResult($tab_rs);
if (isset($cfgRelation['relation'])) {
$cfgRelation['relwork'] = true;
}
if (isset($cfgRelation['relation']) && isset($cfgRelation['table_info'])) {
$cfgRelation['displaywork'] = true;
}
if (isset($cfgRelation['table_coords']) && isset($cfgRelation['pdf_pages'])) {
$cfgRelation['pdfwork'] = true;
}
if (isset($cfgRelation['column_info'])) {
$cfgRelation['commwork'] = true;
// phpMyAdmin 4.3+
// Check for input transformations upgrade.
$cfgRelation['mimework'] = PMA_tryUpgradeTransformations();
}
if (isset($cfgRelation['history'])) {
$cfgRelation['historywork'] = true;
}
if (isset($cfgRelation['recent'])) {
$cfgRelation['recentwork'] = true;
}
if (isset($cfgRelation['favorite'])) {
$cfgRelation['favoritework'] = true;
}
if (isset($cfgRelation['table_uiprefs'])) {
$cfgRelation['uiprefswork'] = true;
}
if (isset($cfgRelation['tracking'])) {
$cfgRelation['trackingwork'] = true;
}
if (isset($cfgRelation['userconfig'])) {
$cfgRelation['userconfigwork'] = true;
}
if (isset($cfgRelation['bookmark'])) {
$cfgRelation['bookmarkwork'] = true;
}
if (isset($cfgRelation['users']) && isset($cfgRelation['usergroups'])) {
$cfgRelation['menuswork'] = true;
}
if (isset($cfgRelation['navigationhiding'])) {
$cfgRelation['navwork'] = true;
}
if (isset($cfgRelation['savedsearches'])) {
$cfgRelation['savedsearcheswork'] = true;
}
if (isset($cfgRelation['central_columns'])) {
$cfgRelation['centralcolumnswork'] = true;
}
if (isset($cfgRelation['designer_settings'])) {
$cfgRelation['designersettingswork'] = true;
}
if (isset($cfgRelation['export_templates'])) {
$cfgRelation['exporttemplateswork'] = true;
}
$allWorks = true;
foreach ($workToTable as $work => $table) {
if (! $cfgRelation[$work]) {
if (is_string($table)) {
if (isset($GLOBALS['cfg']['Server'][$table])
&& $GLOBALS['cfg']['Server'][$table] !== false
) {
$allWorks = false;
break;
}
} else if (is_array($table)) {
$oneNull = false;
foreach ($table as $t) {
if (isset($GLOBALS['cfg']['Server'][$t])
&& $GLOBALS['cfg']['Server'][$t] === false
) {
$oneNull = true;
break;
}
}
if (! $oneNull) {
$allWorks = false;
break;
}
}
}
}
$cfgRelation['allworks'] = $allWorks;
return $cfgRelation;
} // end of the 'PMA_checkRelationsParam()' function
/**
* Check whether column_info table input transformation
* upgrade is required and try to upgrade silently
*
* @return bool false if upgrade failed
*
* @access public
*/
function PMA_tryUpgradeTransformations()
{
// From 4.3, new input oriented transformation feature was introduced.
// Check whether column_info table has input transformation columns
$new_cols = array(
"input_transformation",
"input_transformation_options"
);
$query = 'SHOW COLUMNS FROM '
. PMA\libraries\Util::backquote($GLOBALS['cfg']['Server']['pmadb'])
. '.' . PMA\libraries\Util::backquote(
$GLOBALS['cfg']['Server']['column_info']
)
. ' WHERE Field IN (\'' . implode('\', \'', $new_cols) . '\')';
$result = PMA_queryAsControlUser(
$query, false, PMA\libraries\DatabaseInterface::QUERY_STORE
);
if ($result) {
$rows = $GLOBALS['dbi']->numRows($result);
$GLOBALS['dbi']->freeResult($result);
// input transformations are present
// no need to upgrade
if ($rows === 2) {
return true;
// try silent upgrade without disturbing the user
} else {
// read upgrade query file
$query = @file_get_contents(SQL_DIR . 'upgrade_column_info_4_3_0+.sql');
// replace database name from query to with set in config.inc.php
$query = str_replace(
'`phpmyadmin`',
PMA\libraries\Util::backquote($GLOBALS['cfg']['Server']['pmadb']),
$query
);
// replace pma__column_info table name from query
// to with set in config.inc.php
$query = str_replace(
'`pma__column_info`',
PMA\libraries\Util::backquote(
$GLOBALS['cfg']['Server']['column_info']
),
$query
);
$GLOBALS['dbi']->tryMultiQuery($query, $GLOBALS['controllink']);
// skips result sets of query as we are not interested in it
while ($GLOBALS['dbi']->moreResults($GLOBALS['controllink'])
&& $GLOBALS['dbi']->nextResult($GLOBALS['controllink'])
) {
}
$error = $GLOBALS['dbi']->getError($GLOBALS['controllink']);
// return true if no error exists otherwise false
return empty($error);
}
}
// some failure, either in upgrading or something else
// make some noise, time to wake up user.
return false;
}
/**
* Gets all Relations to foreign tables for a given table or
* optionally a given column in a table
*
* @param string $db the name of the db to check for
* @param string $table the name of the table to check for
* @param string $column the name of the column to check for
* @param string $source the source for foreign key information
*
* @return array db,table,column
*
* @access public
*/
function PMA_getForeigners($db, $table, $column = '', $source = 'both')
{
$cfgRelation = PMA_getRelationsParam();
$foreign = array();
if ($cfgRelation['relwork'] && ($source == 'both' || $source == 'internal')) {
$rel_query = '
SELECT `master_field`,
`foreign_db`,
`foreign_table`,
`foreign_field`
FROM ' . PMA\libraries\Util::backquote($cfgRelation['db'])
. '.' . PMA\libraries\Util::backquote($cfgRelation['relation']) . '
WHERE `master_db` = \'' . $GLOBALS['dbi']->escapeString($db) . '\'
AND `master_table` = \'' . $GLOBALS['dbi']->escapeString($table)
. '\' ';
if (strlen($column) > 0) {
$rel_query .= ' AND `master_field` = '
. '\'' . $GLOBALS['dbi']->escapeString($column) . '\'';
}
$foreign = $GLOBALS['dbi']->fetchResult(
$rel_query, 'master_field', null, $GLOBALS['controllink']
);
}
if (($source == 'both' || $source == 'foreign') && strlen($table) > 0) {
$tableObj = new Table($table, $db);
$show_create_table = $tableObj->showCreate();
if ($show_create_table) {
$parser = new \PhpMyAdmin\SqlParser\Parser($show_create_table);
/**
* @var \PhpMyAdmin\SqlParser\Statements\CreateStatement $stmt
*/
$stmt = $parser->statements[0];
$foreign['foreign_keys_data'] = \PhpMyAdmin\SqlParser\Utils\Table::getForeignKeys(
$stmt
);
}
}
/**
* Emulating relations for some information_schema tables
*/
$isInformationSchema = mb_strtolower($db) == 'information_schema';
$isMysql = mb_strtolower($db) == 'mysql';
if (($isInformationSchema || $isMysql)
&& ($source == 'internal' || $source == 'both')
) {
if ($isInformationSchema) {
$relations_key = 'information_schema_relations';
include_once './libraries/information_schema_relations.lib.php';
} else {
$relations_key = 'mysql_relations';
include_once './libraries/mysql_relations.lib.php';
}
if (isset($GLOBALS[$relations_key][$table])) {
foreach ($GLOBALS[$relations_key][$table] as $field => $relations) {
if ((strlen($column) === 0 || $column == $field)
&& (! isset($foreign[$field])
|| strlen($foreign[$field]) === 0)
) {
$foreign[$field] = $relations;
}
}
}
}
return $foreign;
} // end of the 'PMA_getForeigners()' function
/**
* Gets the display field of a table
*
* @param string $db the name of the db to check for
* @param string $table the name of the table to check for
*
* @return string field name
*
* @access public
*/
function PMA_getDisplayField($db, $table)
{
$cfgRelation = PMA_getRelationsParam();
/**
* Try to fetch the display field from DB.
*/
if ($cfgRelation['displaywork']) {
$disp_query = '
SELECT `display_field`
FROM ' . PMA\libraries\Util::backquote($cfgRelation['db'])
. '.' . PMA\libraries\Util::backquote($cfgRelation['table_info']) . '
WHERE `db_name` = \'' . $GLOBALS['dbi']->escapeString($db) . '\'
AND `table_name` = \'' . $GLOBALS['dbi']->escapeString($table)
. '\'';
$row = $GLOBALS['dbi']->fetchSingleRow(
$disp_query, 'ASSOC', $GLOBALS['controllink']
);
if (isset($row['display_field'])) {
return $row['display_field'];
}
}
/**
* Emulating the display field for some information_schema tables.
*/
if ($db == 'information_schema') {
switch ($table) {
case 'CHARACTER_SETS':
return 'DESCRIPTION';
case 'TABLES':
return 'TABLE_COMMENT';
}
}
/**
* Pick first char field
*/
$columns = $GLOBALS['dbi']->getColumnsFull($db, $table);
if ($columns) {
foreach ($columns as $column) {
if ($GLOBALS['PMA_Types']->getTypeClass($column['DATA_TYPE']) == 'CHAR') {
return $column['COLUMN_NAME'];
}
}
}
/**
* No Luck...
*/
return false;
} // end of the 'PMA_getDisplayField()' function
/**
* Gets the comments for all columns of a table or the db itself
*
* @param string $db the name of the db to check for
* @param string $table the name of the table to check for
*
* @return array [column_name] = comment
*
* @access public
*/
function PMA_getComments($db, $table = '')
{
$comments = array();
if ($table != '') {
// MySQL native column comments
$columns = $GLOBALS['dbi']->getColumns($db, $table, null, true);
if ($columns) {
foreach ($columns as $column) {
if (! empty($column['Comment'])) {
$comments[$column['Field']] = $column['Comment'];
}
}
}
} else {
$comments[] = PMA_getDbComment($db);
}
return $comments;
} // end of the 'PMA_getComments()' function
/**
* Gets the comment for a db
*
* @param string $db the name of the db to check for
*
* @return string comment
*
* @access public
*/
function PMA_getDbComment($db)
{
$cfgRelation = PMA_getRelationsParam();
$comment = '';
if ($cfgRelation['commwork']) {
// pmadb internal db comment
$com_qry = "
SELECT `comment`
FROM " . PMA\libraries\Util::backquote($cfgRelation['db'])
. "." . PMA\libraries\Util::backquote($cfgRelation['column_info'])
. "
WHERE db_name = '" . $GLOBALS['dbi']->escapeString($db) . "'
AND table_name = ''
AND column_name = '(db_comment)'";
$com_rs = PMA_queryAsControlUser(
$com_qry, true, PMA\libraries\DatabaseInterface::QUERY_STORE
);
if ($com_rs && $GLOBALS['dbi']->numRows($com_rs) > 0) {
$row = $GLOBALS['dbi']->fetchAssoc($com_rs);
$comment = $row['comment'];
}
$GLOBALS['dbi']->freeResult($com_rs);
}
return $comment;
} // end of the 'PMA_getDbComment()' function
/**
* Gets the comment for a db
*
* @access public
*
* @return string comment
*/
function PMA_getDbComments()
{
$cfgRelation = PMA_getRelationsParam();
$comments = array();
if ($cfgRelation['commwork']) {
// pmadb internal db comment
$com_qry = "
SELECT `db_name`, `comment`
FROM " . PMA\libraries\Util::backquote($cfgRelation['db'])
. "." . PMA\libraries\Util::backquote($cfgRelation['column_info'])
. "
WHERE `column_name` = '(db_comment)'";
$com_rs = PMA_queryAsControlUser(
$com_qry, true, PMA\libraries\DatabaseInterface::QUERY_STORE
);
if ($com_rs && $GLOBALS['dbi']->numRows($com_rs) > 0) {
while ($row = $GLOBALS['dbi']->fetchAssoc($com_rs)) {
$comments[$row['db_name']] = $row['comment'];
}
}
$GLOBALS['dbi']->freeResult($com_rs);
}
return $comments;
} // end of the 'PMA_getDbComments()' function
/**
* Set a database comment to a certain value.
*
* @param string $db the name of the db
* @param string $comment the value of the column
*
* @return boolean true, if comment-query was made.
*
* @access public
*/
function PMA_setDbComment($db, $comment = '')
{
$cfgRelation = PMA_getRelationsParam();
if (! $cfgRelation['commwork']) {
return false;