relation.lib.php

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 *
 * @access  public
 *
 * @author  Mike Beck <[e-mail]>
 */
function PMA_getDisplayField($db, $table) {
    global $cfgRelation;
    if (trim(@$cfgRelation['table_info']) == '') {
        return FALSE;
    }

    $disp_query      = 'SELECT display_field FROM ' . PMA_backquote($cfgRelation['table_info']);
    if (PMA_MYSQL_INT_VERSION >= 40100) {
        list($conn_charset) = explode('_', $GLOBALS['collation_connection']);
        $disp_query .= ' WHERE CONVERT(db_name    USING ' . $conn_charset . ') = \'' . PMA_sqlAddslashes($db) . '\''
                     . ' AND   CONVERT(table_name USING ' . $conn_charset . ') = \'' . PMA_sqlAddslashes($table) . '\'';
    } else {
        $disp_query .= ' WHERE db_name    = \'' . PMA_sqlAddslashes($db) . '\''
                     . ' AND   table_name = \'' . PMA_sqlAddslashes($table) . '\'';
    }

    $disp_res   = PMA_query_as_cu($disp_query);
    $row        = ($disp_res ? PMA_DBI_fetch_assoc($disp_res) : '');
    PMA_DBI_free_result($disp_res);
    if (isset($row['display_field'])) {
        return $row['display_field'];
    } else {
        return FALSE;
    }
} // end of the 'PMA_getDisplayField()' function


/**
 * Gets the comments for all rows of a table
 *
 * @param   string   the name of the db to check for
 * @param   string   the name of the table to check for
 *
 * @return  array    [field_name] = comment
 *
 * @global  array    the list of relations settings
 *
 * @access  public
 *
 * @author  Mike Beck <[e-mail]>
 */
function PMA_getComments($db, $table = '') {
    global $cfgRelation;

    if (PMA_MYSQL_INT_VERSION >= 40100) {
        list($conn_charset) = explode('_', $GLOBALS['collation_connection']);
    }

    if ($table != '') {
        $com_qry      = 'SELECT column_name, ' . PMA_backquote('comment') . ' FROM ' . PMA_backquote($cfgRelation['column_info']);
        if (PMA_MYSQL_INT_VERSION >= 40100) {
            $com_qry .= ' WHERE CONVERT(db_name    USING ' . $conn_charset . ') = \'' . PMA_sqlAddslashes($db) . '\''
                      . ' AND   CONVERT(table_name USING ' . $conn_charset . ') = \'' . PMA_sqlAddslashes($table) . '\'';
        } else {
            $com_qry .= ' WHERE db_name    = \'' . PMA_sqlAddslashes($db) . '\''
                      . ' AND   table_name = \'' . PMA_sqlAddslashes($table) . '\'';
        }
        $com_rs   = PMA_query_as_cu($com_qry, TRUE);
    } else {
        $com_qry      = 'SELECT ' . PMA_backquote('comment') . ' FROM ' . PMA_backquote($cfgRelation['column_info']);
        if (PMA_MYSQL_INT_VERSION >= 40100) {
            $com_qry .= ' WHERE CONVERT(db_name     USING ' . $conn_charset . ') = \'' . PMA_sqlAddslashes($db) . '\''
                      . ' AND   CONVERT(table_name  USING ' . $conn_charset . ') = \'\''
                      . ' AND   CONVERT(column_name USING ' . $conn_charset . ') = \'(db_comment)\'';
        } else {
            $com_qry .= ' WHERE db_name     = \'' . PMA_sqlAddslashes($db) . '\''
                      . ' AND   table_name  = \'\''
                      . ' AND   column_name = \'(db_comment)\'';
        }
        $com_rs   = PMA_query_as_cu($com_qry, TRUE);
    }

    $i = 0;
    while ($row = PMA_DBI_fetch_assoc($com_rs)) {
        $i++;
        $col           = ($table != '' ? $row['column_name'] : $i);

        if (strlen($row['comment']) > 0) {
            $comment[$col] = $row['comment'];
        }

    } // end while
    PMA_DBI_free_result($com_rs);
    unset($com_rs);

    if (isset($comment) && is_array($comment)) {
        return $comment;
     } else {
        return FALSE;
     }
 } // end of the 'PMA_getComments()' function

/**
* Adds/removes slashes if required
*
* @param   string  the string to slash
*
* @return  string  the slashed string
*
* @access  public
*/
function PMA_handleSlashes($val) {
  return (get_magic_quotes_gpc() ? str_replace('\\"', '"', $val) : PMA_sqlAddslashes($val));
} // end of the "PMA_handleSlashes()" function

/**
* Set a single comment to a certain value.
*
* @param   string   the name of the db
* @param   string   the name of the table
* @param   string   the name of the column
* @param   string   the value of the column
* @param   string   (optional) if a column is renamed, this is the name of the former key which will get deleted
*
* @return  boolean  true, if comment-query was made.
*
* @global  array    the list of relations settings
*
* @access  public
*/
function PMA_setComment($db, $table, $key, $value, $removekey = '') {
    global $cfgRelation;

    if (PMA_MYSQL_INT_VERSION >= 40100) {
        list($conn_charset) = explode('_', $GLOBALS['collation_connection']);
        $cols = array(
            'db_name'     => 'CONVERT(db_name     USING ' . $conn_charset . ')',
            'table_name'  => 'CONVERT(table_name  USING ' . $conn_charset . ')',
            'column_name' => 'CONVERT(column_name USING ' . $conn_charset . ')'
        );
    } else {
        $cols = array(
            'db_name'     => 'db_name    ',
            'table_name'  => 'table_name ',
            'column_name' => 'column_name'
        );
    }

    if ($removekey != '' AND $removekey != $key) {
        $remove_query = 'DELETE FROM ' . PMA_backquote($cfgRelation['column_info'])
                      . ' WHERE ' . $cols['db_name']     . ' = \'' . PMA_sqlAddslashes($db) . '\''
                      . ' AND   ' . $cols['table_name']  . ' = \'' . PMA_sqlAddslashes($table) . '\''
                      . ' AND   ' . $cols['column_name'] . ' = \'' . PMA_sqlAddslashes($removekey) . '\'';
        PMA_query_as_cu($remove_query);
        unset($remove_query);
    }

    $test_qry = 'SELECT ' . PMA_backquote('comment') . ', mimetype, transformation, transformation_options FROM ' . PMA_backquote($cfgRelation['column_info'])
              . ' WHERE ' . $cols['db_name']     . ' = \'' . PMA_sqlAddslashes($db) . '\''
              . ' AND   ' . $cols['table_name']  . ' = \'' . PMA_sqlAddslashes($table) . '\''
              . ' AND   ' . $cols['column_name'] . ' = \'' . PMA_sqlAddslashes($key) . '\'';
    $test_rs   = PMA_query_as_cu($test_qry, TRUE, PMA_DBI_QUERY_STORE);

    if ($test_rs && PMA_DBI_num_rows($test_rs) > 0) {
        $row = PMA_DBI_fetch_assoc($test_rs);
        PMA_DBI_free_result($test_rs);

        if (strlen($value) > 0 || strlen($row['mimetype']) > 0 || strlen($row['transformation']) > 0 || strlen($row['transformation_options']) > 0) {
            $upd_query = 'UPDATE ' . PMA_backquote($cfgRelation['column_info'])
                       . ' SET ' . PMA_backquote('comment') . ' = \'' . PMA_sqlAddslashes($value) . '\''
                       . ' WHERE ' . $cols['db_name']     . ' = \'' . PMA_sqlAddslashes($db) . '\''
                       . ' AND   ' . $cols['table_name']  . ' = \'' . PMA_sqlAddslashes($table) . '\''
                       . ' AND   ' . $cols['column_name'] . ' = \'' . PMA_sqlAddSlashes($key) . '\'';
        } else {
            $upd_query = 'DELETE FROM ' . PMA_backquote($cfgRelation['column_info'])
                       . ' WHERE ' . $cols['db_name']     . ' = \'' . PMA_sqlAddslashes($db) . '\''
                       . ' AND   ' . $cols['table_name']  . ' = \'' . PMA_sqlAddslashes($table) . '\''
                       . ' AND   ' . $cols['column_name'] . ' = \'' . PMA_sqlAddslashes($key) . '\'';
        }
    } else if (strlen($value) > 0) {
        $upd_query = 'INSERT INTO ' . PMA_backquote($cfgRelation['column_info'])
                   . ' (db_name, table_name, column_name, ' . PMA_backquote('comment') . ') '
                   . ' VALUES('
                   . '\'' . PMA_sqlAddslashes($db) . '\','
                   . '\'' . PMA_sqlAddslashes($table) . '\','
                   . '\'' . PMA_sqlAddslashes($key) . '\','
                   . '\'' . PMA_sqlAddslashes($value) . '\')';
    }

    if (isset($upd_query)){
        $upd_rs    = PMA_query_as_cu($upd_query);
        unset($upd_query);
        return true;
    } else {
        return false;
    }
} // end of 'PMA_setComment()' function

/**
* Set a SQL history entry
*
* @param   string   the name of the db
* @param   string   the name of the table
* @param   string   the username
* @param   string   the sql query
*
* @return  boolean  true
*
* @access  public
*/
function PMA_setHistory($db, $table, $username, $sqlquery) {
    global $cfgRelation;

    $hist_rs    = PMA_query_as_cu('INSERT INTO ' . PMA_backquote($cfgRelation['history']) . ' ('
                . PMA_backquote('username') . ','
                . PMA_backquote('db') . ','
                . PMA_backquote('table') . ','
                . PMA_backquote('timevalue') . ','
                . PMA_backquote('sqlquery')
                . ') VALUES ('
                . '\'' . PMA_sqlAddslashes($username) . '\','
                . '\'' . PMA_sqlAddslashes($db) . '\','
                . '\'' . PMA_sqlAddslashes($table) . '\','
                . 'NOW(),'
                . '\'' . PMA_sqlAddslashes($sqlquery) . '\')');
    return true;
} // end of 'PMA_setHistory()' function

/**
* Gets a SQL history entry
*
* @param   string   the username
*
* @return  array    list of history items
*
* @access  public
*/
function PMA_getHistory($username) {
    global $cfgRelation;

    $hist_query      = 'SELECT '
                     . PMA_backquote('db') . ','
                     . PMA_backquote('table') . ','
                     . PMA_backquote('sqlquery')
                     . ' FROM ' . PMA_backquote($cfgRelation['history'])
                     . ' WHERE ';
    if (PMA_MYSQL_INT_VERSION >= 40100) {
        list($conn_charset) = explode('_', $GLOBALS['collation_connection']);
        $hist_query .= 'CONVERT(username USING ' . $conn_charset . ')';
        unset($conn_charset);
    } else {
        $hist_query .= 'username';
    }
    $hist_query     .= ' = \'' . PMA_sqlAddslashes($username) . '\' ORDER BY id DESC';

    $hist_rs = PMA_query_as_cu($hist_query);
    unset($hist_query);

    $history = array();

    while ($row = PMA_DBI_fetch_assoc($hist_rs)) {
        $history[] = $row;
    }
    PMA_DBI_free_result($hist_rs);

    return $history;

} // end of 'PMA_getHistory()' function

/**
* Set a SQL history entry
*
* @param   string   the name of the db
* @param   string   the name of the table
* @param   string   the username
* @param   string   the sql query
*
* @return  boolean  true
*
* @access  public
*/
function PMA_purgeHistory($username) {
    global $cfgRelation, $cfg;

    $purge_query  = 'SELECT timevalue FROM ' . PMA_backquote($cfgRelation['history']) . ' WHERE ';
    if (PMA_MYSQL_INT_VERSION >= 40100) {
        list($conn_charset) = explode('_', $GLOBALS['collation_connection']);
        $purge_query .= 'CONVERT(username USING ' . $conn_charset . ')';
        unset($conn_charset);
    } else {
        $purge_query .= 'username';
    }
    $purge_query .= ' = \'' . PMA_sqlAddSlashes($username) . '\' ORDER BY timevalue DESC LIMIT ' . $cfg['QueryHistoryMax'] . ', 1';
    $purge_rs = PMA_query_as_cu($purge_query);
    $i = 0;
    $row = PMA_DBI_fetch_row($purge_rs);
    PMA_DBI_free_result($purge_rs);

    if (is_array($row) && isset($row[0]) && $row[0] > 0) {
        $maxtime = $row[0];
        // quotes added around $maxtime to prevent a difficult to
        // reproduce problem
        $remove_rs = PMA_query_as_cu('DELETE FROM ' . PMA_backquote($cfgRelation['history']) . ' WHERE timevalue <= "' . $maxtime . '"');
    }

    return true;
} // end of 'PMA_purgeHistory()' function

/**
* Outputs dropdown with values of foreign fields
*
* @param   string   the query of the foreign keys
* @param   string   the foreign field
* @param   string   the foreign field to display
* @param   string   the current data of the dropdown
*
* @return  string   the <option value=""><option>s
*
* @access  public
*/
function PMA_foreignDropdown($disp, $foreign_field, $foreign_display, $data, $max = 100) {
    global $cfg;

    $ret = '<option value=""></option>' . "\n";

    $reloptions = array('content-id' => array(), 'id-content' => array());
    
    foreach ($disp AS $disp_key => $relrow) {
        $key   = $relrow[$foreign_field];

        // if the display field has been defined for the foreign table
        if ($foreign_display) {
            if (PMA_strlen($relrow[$foreign_display]) <= $cfg['LimitChars']) {
                $value  = htmlspecialchars($relrow[$foreign_display]);
                $vtitle = '';
            } else {
                $vtitle = htmlspecialchars($relrow[$foreign_display]);
                $value  = htmlspecialchars(substr($vtitle, 0, $cfg['LimitChars']) . '...');
            }
        } else {
            $vtitle = $value = '';
        } // end if ($foreign_display)

        $reloption = '<option value="' . htmlspecialchars($key) . '"';
        if ($vtitle != '') {
            $reloption .= ' title="' . $vtitle . '"';
        }

        if ($key == $data) {
           $reloption .= ' selected="selected"';
        } // end if

        $reloptions['id-content'][] = $reloption . '>' . $value . '&nbsp;-&nbsp;' . htmlspecialchars($key) .  '</option>' . "\n";
        $reloptions['content-id'][] = $reloption . '>' . htmlspecialchars($key) .  '&nbsp;-&nbsp;' . $value . '</option>' . "\n";
    } // end while

    // the list of keys looks better if not sorted by description
    if ($cfg['NaturalOrder']) {
        natsort($reloptions['content-id']); }
    else {
        asort($reloptions['content-id']);
    }

    if ($max == -1 || count($reloptions['content-id']) < $max) {
        $ret .= implode('', $reloptions['content-id']);
        if (count($reloptions['content-id']) > 0) {
            $ret .= '<option value=""></option>' . "\n";
            $ret .= '<option value=""></option>' . "\n";
        }
    }

    $ret .= implode('', $reloptions['id-content']);

    return $ret;
} // end of 'PMA_foreignDropdown()' function

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