<?php
/* vim: set expandtab sw=4 ts=4 sts=4: */
/**
 * Functions for routine management.
 *
 * @package PhpMyAdmin
 */
if (! defined('PHPMYADMIN')) {
    exit;
}

/**
 * Sets required globals
 */
function PMA_RTN_setGlobals()
{
    global $param_directions, $param_opts_num, $param_sqldataaccess;

    $param_directions    = array('IN',
                                 'OUT',
                                 'INOUT');
    $param_opts_num      = array('UNSIGNED',
                                 'ZEROFILL',
                                 'UNSIGNED ZEROFILL');
    $param_sqldataaccess = array('NO SQL',
                                 'CONTAINS SQL',
                                 'READS SQL DATA',
                                 'MODIFIES SQL DATA');
}

/**
 * Main function for the routines functionality
 */
function PMA_RTN_main()
{
    global $db;

    PMA_RTN_setGlobals();
    /**
     * Process all requests
     */
    PMA_RTN_handleEditor();
    PMA_RTN_handleExecute();
    PMA_RTN_handleExport();
    /**
     * Display a list of available routines
     */
    $columns  = "`SPECIFIC_NAME`, `ROUTINE_NAME`, `ROUTINE_TYPE`, ";
    $columns .= "`DTD_IDENTIFIER`, `ROUTINE_DEFINITION`";
    $where    = "ROUTINE_SCHEMA='" . PMA_sqlAddSlashes($db) . "'";
    $items    = PMA_DBI_fetch_result(
        "SELECT $columns FROM `INFORMATION_SCHEMA`.`ROUTINES` WHERE $where;"
    );
    echo PMA_RTE_getList('routine', $items);
    /**
     * Display the form for adding a new routine, if the user has the privileges.
     */
    echo PMA_RTN_getFooterLinks();
    /**
     * Display a warning for users with PHP's old "mysql" extension.
     */
    if ($GLOBALS['cfg']['Server']['extension'] === 'mysql') {
        trigger_error(
            __('You are using PHP\'s deprecated \'mysql\' extension, '
            . 'which is not capable of handling multi queries. '
            . '<b>The execution of some stored routines may fail!</b> '
            . 'Please use the improved \'mysqli\' extension to '
            . 'avoid any problems.'),
            E_USER_WARNING
        );
    }
} // end PMA_RTN_main()

/**
 * This function parses a string containing one parameter of a routine,
 * as returned by PMA_RTN_parseAllParameters() and returns an array containing
 * the information about this parameter.
 *
 * @param   string  $value    A string containing one parameter of a routine
 *
 * @return  array             Parsed information about the input parameter
 */
function PMA_RTN_parseOneParameter($value)
{
    global $param_directions;

    $retval = array(0 => '',
                    1 => '',
                    2 => '',
                    3 => '',
                    4 => '');
    $parsed_param = PMA_SQP_parse($value);
    $pos = 0;
    if (in_array(strtoupper($parsed_param[$pos]['data']), $param_directions)) {
        $retval[0] = strtoupper($parsed_param[0]['data']);
        $pos++;
    }
    if ($parsed_param[$pos]['type'] == 'alpha_identifier'
        || $parsed_param[$pos]['type'] == 'quote_backtick'
    ) {
        $retval[1] = PMA_unQuote($parsed_param[$pos]['data']);
        $pos++;
    }
    $depth = 0;
    $param_length = '';
    $param_opts = array();
    for ($i=$pos; $i<$parsed_param['len']; $i++) {
        if (($parsed_param[$i]['type'] == 'alpha_columnType'
            || $parsed_param[$i]['type'] == 'alpha_functionName') && $depth == 0 // "CHAR" seems to be mistaken for a function by the parser
        ) {
            $retval[2] = strtoupper($parsed_param[$i]['data']);
        } else if ($parsed_param[$i]['type'] == 'punct_bracket_open_round' && $depth == 0) {
            $depth = 1;
        } else if ($parsed_param[$i]['type'] == 'punct_bracket_close_round' && $depth == 1) {
            $depth = 0;
        } else if ($depth == 1) {
            $param_length .= $parsed_param[$i]['data'];
        } else if ($parsed_param[$i]['type'] == 'alpha_reservedWord' && strtoupper($parsed_param[$i]['data']) == 'CHARSET' && $depth == 0) {
            if ($parsed_param[$i+1]['type'] == 'alpha_charset' || $parsed_param[$i+1]['type'] == 'alpha_identifier') {
                $param_opts[] = strtolower($parsed_param[$i+1]['data']);
            }
        } else if ($parsed_param[$i]['type'] == 'alpha_columnAttrib' && $depth == 0) {
            $param_opts[] = strtoupper($parsed_param[$i]['data']);
        }
    }
    $retval[3] = $param_length;
    sort($param_opts);
    $retval[4] = implode(' ', $param_opts);

    return $retval;
} // end PMA_RTN_parseOneParameter()

/**
 * This function looks through the contents of a parsed
 * SHOW CREATE [PROCEDURE | FUNCTION] query and extracts
 * information about the routine's parameters.
 *
 * @param   array   $parsed_query  Parsed query, returned by by PMA_SQP_parse()
 * @param   string  $routine_type  Routine type: 'PROCEDURE' or 'FUNCTION'
 *
 * @return  array   Information about the parameteres of a routine.
 */
function PMA_RTN_parseAllParameters($parsed_query, $routine_type)
{
    $retval = array();
    $retval['num'] = 0;

    // First get the list of parameters from the query
    $buffer = '';
    $params = array();
    $fetching = false;
    $depth = 0;
    for ($i=0; $i<$parsed_query['len']; $i++) {
        if ($parsed_query[$i]['type'] == 'alpha_reservedWord' && $parsed_query[$i]['data'] == $routine_type) {
            $fetching = true;
        } else if ($fetching == true && $parsed_query[$i]['type'] == 'punct_bracket_open_round') {
            $depth++;
            if ($depth > 1) {
                $buffer .= $parsed_query[$i]['data'] . ' ';
            }
        } else if ($fetching == true && $parsed_query[$i]['type'] == 'punct_bracket_close_round') {
            $depth--;
            if ($depth > 0) {
                $buffer .= $parsed_query[$i]['data'] . ' ';
            } else {
                break;
            }
        } else if ($parsed_query[$i]['type'] == 'punct_listsep' && $depth == 1) {
            $params[] = $buffer;
            $retval['num']++;
            $buffer = '';
        } else if ($fetching == true && $depth > 0) {
            $buffer .= $parsed_query[$i]['data'] . ' ';
        }
    }
    if (! empty($buffer)) {
        $params[] = $buffer;
        $retval['num']++;
    }
    // Now parse each parameter individually
    foreach ($params as $key => $value) {
        list($retval['dir'][],
             $retval['name'][],
             $retval['type'][],
             $retval['length'][],
             $retval['opts'][]) = PMA_RTN_parseOneParameter($value);
    }
    // Since some indices of $retval may be still undefined, we fill
    // them each with an empty array to avoid E_ALL errors in PHP.
    foreach (array('dir', 'name', 'type', 'length', 'opts') as $key => $index) {
        if (! isset($retval[$index])) {
            $retval[$index] = array();
        }
    }

    return $retval;
} // end PMA_RTN_parseAllParameters()

/**
 * This function looks through the contents of a parsed
 * SHOW CREATE [PROCEDURE | FUNCTION] query and extracts
 * information about the routine's definer.
 *
 * @param   array   $parsed_query   Parsed query, returned by PMA_SQP_parse()
 *
 * @return  string  The definer of a routine.
 */
function PMA_RTN_parseRoutineDefiner($parsed_query)
{
    $retval = '';
    $fetching = false;
    for ($i=0; $i<$parsed_query['len']; $i++) {
        if ($parsed_query[$i]['type'] == 'alpha_reservedWord' && $parsed_query[$i]['data'] == 'DEFINER') {
            $fetching = true;
        } else if ($fetching == true && ($parsed_query[$i]['type'] != 'quote_backtick' && substr($parsed_query[$i]['type'], 0, 5) != 'punct')) {
            break;
        } else if ($fetching == true && $parsed_query[$i]['type'] == 'quote_backtick') {
            $retval .= PMA_unQuote($parsed_query[$i]['data']);
        } else if ($fetching == true && $parsed_query[$i]['type'] == 'punct_user') {
            $retval .= $parsed_query[$i]['data'];
        }
    }
    return $retval;
} // end PMA_RTN_parseRoutineDefiner()

/**
 * Handles editor requests for adding or editing an item
 */
function PMA_RTN_handleEditor()
{
    global $_GET, $_POST, $_REQUEST, $GLOBALS, $db, $errors;

    if (! empty($_REQUEST['editor_process_add'])
        || ! empty($_REQUEST['editor_process_edit'])
    ) {
        /**
         * Handle a request to create/edit a routine
         */
        $sql_query = '';
        $routine_query = PMA_RTN_getQueryFromRequest();
        if (! count($errors)) { // set by PMA_RTN_getQueryFromRequest()
            // Execute the created query
            if (! empty($_REQUEST['editor_process_edit'])) {
                if (! in_array($_REQUEST['item_original_type'], array('PROCEDURE', 'FUNCTION'))) {
                    $errors[] = sprintf(__('Invalid routine type: "%s"'), htmlspecialchars($_REQUEST['item_original_type']));
                } else {
                    // Backup the old routine, in case something goes wrong
                    $create_routine = PMA_DBI_get_definition($db, $_REQUEST['item_original_type'], $_REQUEST['item_original_name']);
                    $drop_routine = "DROP {$_REQUEST['item_original_type']} " . PMA_backquote($_REQUEST['item_original_name']) . ";\n";
                    $result = PMA_DBI_try_query($drop_routine);
                    if (! $result) {
                        $errors[] = sprintf(
                            __('The following query has failed: "%s"'),
                            htmlspecialchars($drop_routine)
                        )
                        . '<br />'
                        . __('MySQL said: ') . PMA_DBI_getError(null);
                    } else {
                        $result = PMA_DBI_try_query($routine_query);
                        if (! $result) {
                            $errors[] = sprintf(
                                __('The following query has failed: "%s"'),
                                htmlspecialchars($routine_query)
                            )
                            . '<br />'
                            . __('MySQL said: ') . PMA_DBI_getError(null);
                            // We dropped the old routine, but were unable to create the new one
                            // Try to restore the backup query
                            $result = PMA_DBI_try_query($create_routine);
                            if (! $result) {
                                // OMG, this is really bad! We dropped the query, failed to create a new one
                                // and now even the backup query does not execute!
                                // This should not happen, but we better handle this just in case.
                                $errors[] = __(
                                    'Sorry, we failed to restore the dropped routine.'
                                )
                                . '<br />'
                                . __('The backed up query was:')
                                . "\"" . htmlspecialchars($create_routine) . "\""
                                . '<br />'
                                . __('MySQL said: ') . PMA_DBI_getError(null);
                            }
                        } else {
                            $message = PMA_Message::success(__('Routine %1$s has been modified.'));
                            $message->addParam(PMA_backquote($_REQUEST['item_name']));
                            $sql_query = $drop_routine . $routine_query;
                        }
                    }
                }
            } else {
                // 'Add a new routine' mode
                $result = PMA_DBI_try_query($routine_query);
                if (! $result) {
                    $errors[] = sprintf(
                        __('The following query has failed: "%s"'),
                        htmlspecialchars($routine_query)
                    )
                    . '<br /><br />'
                    . __('MySQL said: ') . PMA_DBI_getError(null);
                } else {
                    $message = PMA_Message::success(__('Routine %1$s has been created.'));
                    $message->addParam(PMA_backquote($_REQUEST['item_name']));
                    $sql_query = $routine_query;
                }
            }
        }

        if (count($errors)) {
            $message = PMA_Message::error(__('<b>One or more errors have occured while processing your request:</b>'));
            $message->addString('<ul>');
            foreach ($errors as $string) {
                $message->addString('<li>' . $string . '</li>');
            }
            $message->addString('</ul>');
        }

        $output = PMA_showMessage($message, $sql_query);
        if ($GLOBALS['is_ajax_request']) {
            $extra_data = array();
            if ($message->isSuccess()) {
                $columns  = "`SPECIFIC_NAME`, `ROUTINE_NAME`, `ROUTINE_TYPE`, `DTD_IDENTIFIER`, `ROUTINE_DEFINITION`";
                $where    = "ROUTINE_SCHEMA='" . PMA_sqlAddSlashes($db) . "' "
                          . "AND ROUTINE_NAME='" . PMA_sqlAddSlashes($_REQUEST['item_name']) . "'"
                          . "AND ROUTINE_TYPE='" . PMA_sqlAddSlashes($_REQUEST['item_type']) . "'";
                $routine  = PMA_DBI_fetch_single_row("SELECT $columns FROM `INFORMATION_SCHEMA`.`ROUTINES` WHERE $where;");
                $extra_data['name']    = htmlspecialchars(strtoupper($_REQUEST['item_name']));
                $extra_data['new_row'] = PMA_RTN_getRowForList($routine);
                $extra_data['insert']  = ! empty($routine);
                $response = $output;
            } else {
                $response = $message;
            }
            PMA_ajaxResponse($response, $message->isSuccess(), $extra_data);
        }
    }

    /**
     * Display a form used to add/edit a routine, if necessary
     */
    if (count($errors) || ( empty($_REQUEST['editor_process_add']) && empty($_REQUEST['editor_process_edit'])
        && (! empty($_REQUEST['add_item']) || ! empty($_REQUEST['edit_item'])
        || ! empty($_REQUEST['routine_addparameter']) || ! empty($_REQUEST['routine_removeparameter'])
        || ! empty($_REQUEST['routine_changetype']))) // FIXME: this must be simpler than that
    ) {
        // Handle requests to add/remove parameters and changing routine type
        // This is necessary when JS is disabled
        $operation = '';
        if (! empty($_REQUEST['routine_addparameter'])) {
            $operation = 'add';
        } else if (! empty($_REQUEST['routine_removeparameter'])) {
            $operation = 'remove';
        } else if (! empty($_REQUEST['routine_changetype'])) {
            $operation = 'change';
        }
        // Get the data for the form (if any)
        if (! empty($_REQUEST['add_item'])) {
            $title = PMA_RTE_getWord('add');
            $routine = PMA_RTN_getDataFromRequest();
            $mode = 'add';
        } else if (! empty($_REQUEST['edit_item'])) {
            $title = __("Edit routine");
            if (! $operation && ! empty($_REQUEST['item_name']) && empty($_REQUEST['editor_process_edit'])) {
                $routine = PMA_RTN_getDataFromName($_REQUEST['item_name'], $_REQUEST['item_type']);
                if ($routine !== false) {
                    $routine['item_original_name'] = $routine['item_name'];
                    $routine['item_original_type'] = $routine['item_type'];
                }
            } else {
                $routine = PMA_RTN_getDataFromRequest();
            }
            $mode = 'edit';
        }
        if ($routine !== false) {
            // Show form
            $editor = PMA_RTN_getEditorForm($mode, $operation, $routine);
            if ($GLOBALS['is_ajax_request']) {
                $template   = PMA_RTN_getParameterRow();
                $extra_data = array('title' => $title,
                                    'param_template' => $template,
                                    'type' => $routine['item_type']);
                PMA_ajaxResponse($editor, true, $extra_data);
            }
            echo "\n\n<h2>$title</h2>\n\n$editor";
            include './libraries/footer.inc.php';
            // exit;
        } else {
            $message  = __('Error in processing request') . ' : ';
            $message .= sprintf(
                PMA_RTE_getWord('not_found'),
                htmlspecialchars(PMA_backquote($_REQUEST['item_name'])),
                htmlspecialchars(PMA_backquote($db))
            );
            $message = PMA_message::error($message);
            if ($GLOBALS['is_ajax_request']) {
                PMA_ajaxResponse($message, false);
            } else {
                $message->display();
            }
        }
    }
} // end PMA_RTN_handleEditor()

/**
 * This function will generate the values that are required to
 * complete the editor form. It is especially necessary to handle
 * the 'Add another parameter', 'Remove last parameter' and
 * 'Change routine type' functionalities when JS is disabled.
 *
 * @return  array    Data necessary to create the routine editor.
 */
function PMA_RTN_getDataFromRequest()
{
    global $_REQUEST, $param_directions, $param_sqldataaccess;

    $retval = array();
    $indices = array('item_name',
                     'item_original_name',
                     'item_returnlength',
                     'item_returnopts_num',
                     'item_returnopts_text',
                     'item_definition',
                     'item_comment',
                     'item_definer');
    foreach ($indices as $key => $index) {
        $retval[$index] = isset($_REQUEST[$index]) ? $_REQUEST[$index] : '';
    }

    $retval['item_type']         = 'PROCEDURE';
    $retval['item_type_toggle']  = 'FUNCTION';
    if (isset($_REQUEST['item_type']) && $_REQUEST['item_type'] == 'FUNCTION') {
        $retval['item_type']         = 'FUNCTION';
        $retval['item_type_toggle']  = 'PROCEDURE';
    }
    $retval['item_original_type'] = 'PROCEDURE';
    if (isset($_REQUEST['item_original_type'])
        && $_REQUEST['item_original_type'] == 'FUNCTION'
    ) {
        $retval['item_original_type'] = 'FUNCTION';
    }
    $retval['item_num_params']      = 0;
    $retval['item_param_dir']       = array();
    $retval['item_param_name']      = array();
    $retval['item_param_type']      = array();
    $retval['item_param_length']    = array();
    $retval['item_param_opts_num']  = array();
    $retval['item_param_opts_text'] = array();
    if (   isset($_REQUEST['item_param_name'])
        && isset($_REQUEST['item_param_type'])
        && isset($_REQUEST['item_param_length'])
        && isset($_REQUEST['item_param_opts_num'])
        && isset($_REQUEST['item_param_opts_text'])
        && is_array($_REQUEST['item_param_name'])
        && is_array($_REQUEST['item_param_type'])
        && is_array($_REQUEST['item_param_length'])
        && is_array($_REQUEST['item_param_opts_num'])
        && is_array($_REQUEST['item_param_opts_text'])
    ) {
        if ($_REQUEST['item_type'] == 'PROCEDURE') {
            $retval['item_param_dir'] = $_REQUEST['item_param_dir'];
            foreach ($retval['item_param_dir'] as $key => $value) {
                if (! in_array($value, $param_directions, true)) {
                    $retval['item_param_dir'][$key] = '';
                }
            }
        }
        $retval['item_param_name'] = $_REQUEST['item_param_name'];
        $retval['item_param_type'] = $_REQUEST['item_param_type'];
        foreach ($retval['item_param_type'] as $key => $value) {
            if (! in_array($value, PMA_getSupportedDatatypes(), true)) {
                $retval['item_param_type'][$key] = '';
            }
        }
        $retval['item_param_length']    = $_REQUEST['item_param_length'];
        $retval['item_param_opts_num']  = $_REQUEST['item_param_opts_num'];
        $retval['item_param_opts_text'] = $_REQUEST['item_param_opts_text'];
        $retval['item_num_params'] = max(
            count($retval['item_param_name']),
            count($retval['item_param_type']),
            count($retval['item_param_length']),
            count($retval['item_param_opts_num']),
            count($retval['item_param_opts_text'])
        );
    }
    $retval['item_returntype'] = '';
    if (isset($_REQUEST['item_returntype'])
        && in_array($_REQUEST['item_returntype'], PMA_getSupportedDatatypes())
    ) {
        $retval['item_returntype'] = $_REQUEST['item_returntype'];
    }

    $retval['item_isdeterministic'] = '';
    if (isset($_REQUEST['item_isdeterministic'])
        && strtolower($_REQUEST['item_isdeterministic']) == 'on'
    ) {
        $retval['item_isdeterministic'] = " checked='checked'";
    }
    $retval['item_securitytype_definer'] = '';
    $retval['item_securitytype_invoker'] = '';
    if (isset($_REQUEST['item_securitytype'])) {
        if ($_REQUEST['item_securitytype'] === 'DEFINER') {
            $retval['item_securitytype_definer'] = " selected='selected'";
        } else if ($_REQUEST['item_securitytype'] === 'INVOKER') {
            $retval['item_securitytype_invoker'] = " selected='selected'";
        }
    }
    $retval['item_sqldataaccess'] = '';
    if (isset($_REQUEST['item_sqldataaccess'])
        && in_array($_REQUEST['item_sqldataaccess'], $param_sqldataaccess, true)
    ) {
        $retval['item_sqldataaccess'] = $_REQUEST['item_sqldataaccess'];
    }

    return $retval;
} // end function PMA_RTN_getDataFromRequest()

/**
 * This function will generate the values that are required to complete
 * the "Edit routine" form given the name of a routine.
 *
 * @param   string   $name   The name of the routine.
 * @param   string   $type   Type of routine (ROUTINE|PROCEDURE)
 * @param   bool     $all    Whether to return all data or just
 *                           the info about parameters.
 *
 * @return  array    Data necessary to create the routine editor.
 */
function PMA_RTN_getDataFromName($name, $type, $all = true)
{
    global $db;

    $retval  = array();

    // Build and execute the query
    $fields  = "SPECIFIC_NAME, ROUTINE_TYPE, DTD_IDENTIFIER, "
             . "ROUTINE_DEFINITION, IS_DETERMINISTIC, SQL_DATA_ACCESS, "
             . "ROUTINE_COMMENT, SECURITY_TYPE";
    $where   = "ROUTINE_SCHEMA='" . PMA_sqlAddSlashes($db) . "' "
             . "AND SPECIFIC_NAME='" . PMA_sqlAddSlashes($name) . "'"
             . "AND ROUTINE_TYPE='" . PMA_sqlAddSlashes($type) . "'";
    $query   = "SELECT $fields FROM INFORMATION_SCHEMA.ROUTINES WHERE $where;";

    $routine = PMA_DBI_fetch_single_row($query);

    if (! $routine) {
        return false;
    }

    // Get required data
    $retval['item_name'] = $routine['SPECIFIC_NAME'];
    $retval['item_type'] = $routine['ROUTINE_TYPE'];
    $parsed_query = PMA_SQP_parse(
        PMA_DBI_get_definition(
            $db,
            $routine['ROUTINE_TYPE'],
            $routine['SPECIFIC_NAME']
        )
    );
    $params = PMA_RTN_parseAllParameters($parsed_query, $routine['ROUTINE_TYPE']);
    $retval['item_num_params']      = $params['num'];
    $retval['item_param_dir']       = $params['dir'];
    $retval['item_param_name']      = $params['name'];
    $retval['item_param_type']      = $params['type'];
    $retval['item_param_length']    = $params['length'];
    $retval['item_param_opts_num']  = $params['opts'];
    $retval['item_param_opts_text'] = $params['opts'];

    // Get extra data
    if ($all) {
        if ($retval['item_type'] == 'FUNCTION') {
            $retval['item_type_toggle'] = 'PROCEDURE';
        } else {
            $retval['item_type_toggle'] = 'FUNCTION';
        }
        $retval['item_returntype']   = '';
        $retval['item_returnlength'] = '';
        $retval['item_returnopts_num']  = '';
        $retval['item_returnopts_text'] = '';
        if (! empty($routine['DTD_IDENTIFIER'])) {
            if (strlen($routine['DTD_IDENTIFIER']) > 63) {
                // If the DTD_IDENTIFIER string from INFORMATION_SCHEMA is
                // at least 64 characters, then it may actually have been
                // chopped because that column is a varchar(64), so we will
                // parse the output of SHOW CREATE query to get accurate
                // information about the return variable.
                $dtd = '';
                $fetching = false;
                for ($i=0; $i<$parsed_query['len']; $i++) {
                    if ($parsed_query[$i]['type'] == 'alpha_reservedWord'
                        && strtoupper($parsed_query[$i]['data']) == 'RETURNS'
                    ) {
                        $fetching = true;
                    } else if ($fetching == true && $parsed_query[$i]['type'] == 'alpha_reservedWord') {
                        // We will not be looking for options such as UNSIGNED
                        // or ZEROFILL because there is no way that a numeric
                        // field's DTD_IDENTIFIER can be longer than 64
                        // characters. We can safely assume that the return
                        // datatype is either ENUM or SET, so we only look
                        // for CHARSET.
                        $word = strtoupper($parsed_query[$i]['data']);
                        if ($word == 'CHARSET'
                            && ($parsed_query[$i+1]['type'] == 'alpha_charset'
                            || $parsed_query[$i+1]['type'] == 'alpha_identifier')
                        ) {
                            $dtd .= $word . ' ' . $parsed_query[$i+1]['data'];
                        }
                        break;
                    } else if ($fetching == true) {
                        $dtd .= $parsed_query[$i]['data'] . ' ';
                    }
                }
                $routine['DTD_IDENTIFIER'] = $dtd;
            }
            $returnparam = PMA_RTN_parseOneParameter($routine['DTD_IDENTIFIER']);
            $retval['item_returntype']      = $returnparam[2];
            $retval['item_returnlength']    = $returnparam[3];
            $retval['item_returnopts_num']  = $returnparam[4];
            $retval['item_returnopts_text'] = $returnparam[4];
        }
        $retval['item_definer']         = PMA_RTN_parseRoutineDefiner($parsed_query);
        $retval['item_definition']      = $routine['ROUTINE_DEFINITION'];
        $retval['item_isdeterministic'] = '';
        if ($routine['IS_DETERMINISTIC'] == 'YES') {
            $retval['item_isdeterministic'] = " checked='checked'";
        }
        $retval['item_securitytype_definer'] = '';
        $retval['item_securitytype_invoker'] = '';
        if ($routine['SECURITY_TYPE'] == 'DEFINER') {
            $retval['item_securitytype_definer'] = " selected='selected'";
        } else if ($routine['SECURITY_TYPE'] == 'INVOKER') {
            $retval['item_securitytype_invoker'] = " selected='selected'";
        }
        $retval['item_sqldataaccess'] = $routine['SQL_DATA_ACCESS'];
        $retval['item_comment']       = $routine['ROUTINE_COMMENT'];
    }

    return $retval;
} // PMA_RTN_getDataFromName()

/**
 * Creates one row for the parameter table used in the routine editor.
 *
 * @param   array    $routine    Data for the routine returned by
 *                               PMA_RTN_getDataFromRequest() or
 *                               PMA_RTN_getDataFromName()
 * @param   mixed    $index      Either a numeric index of the row being processed
 *                               or NULL to create a template row for AJAX request
 * @param   string   $class      Class used to hide the direction column, if the
 *                               row is for a stored function.
 *
 * @return    string    HTML code of one row of parameter table for the editor.
 */
function PMA_RTN_getParameterRow($routine = array(), $index = null, $class = '')
{
    global $param_directions, $param_opts_num, $titles;

    if ($index === null) {
        // template row for AJAX request
        $i = 0;
        $index = '%s';
        $drop_class = '';
        $routine = array(
            'item_param_dir'       => array(0 => ''),
            'item_param_name'      => array(0 => ''),
            'item_param_type'      => array(0 => ''),
            'item_param_length'    => array(0 => ''),
            'item_param_opts_num'  => array(0 => ''),
            'item_param_opts_text' => array(0 => '')
        );
    } else if (! empty($routine)) {
        // regular row for routine editor
        $drop_class = ' hide';
        $i = $index;
    } else {
        // No input data. This shouldn't happen,
        // but better be safe than sorry.
        return '';
    }

    // Create the output
    $retval  = "";
    $retval .= "        <tr>\n";
    $retval .= "            <td class='routine_direction_cell$class'>\n";
    $retval .= "                <select name='item_param_dir[$index]'>\n";
    foreach ($param_directions as $key => $value) {
        $selected = "";
        if (! empty($routine['item_param_dir'][$i])
            && $routine['item_param_dir'][$i] == $value
        ) {
            $selected = " selected='selected'";
        }
        $retval .= "                    <option$selected>$value</option>\n";
    }
    $retval .= "                </select>\n";
    $retval .= "            </td>\n";
    $retval .= "            <td><input name='item_param_name[$index]' type='text'\n";
    $retval .= "                       value='{$routine['item_param_name'][$i]}' /></td>\n";
    $retval .= "            <td><select name='item_param_type[$index]'>";
    $retval .= PMA_getSupportedDatatypes(true, $routine['item_param_type'][$i]) . "\n";
    $retval .= "            </select></td>\n";
    $retval .= "            <td>\n";
    $retval .= "                <input id='item_param_length_$index'\n";
    $retval .= "                       name='item_param_length[$index]' type='text'\n";
    $retval .= "                       value='{$routine['item_param_length'][$i]}' />\n";
    $retval .= "                <div class='enum_hint'>\n";
    $retval .= "                    <a class='open_enum_editor' target='_blank'\n";
    $retval .= "                       href='enum_editor.php?" . PMA_generate_common_url() . "&amp;values=" . $routine['item_param_length'][$i] . "&amp;field=" . $routine['item_param_name'][$i] . "'>\n";
    $retval .= "                        " . PMA_getImage('b_edit', '', array('title'=>__('ENUM/SET editor'))) . "\n";
    $retval .= "                    </a>\n";
    $retval .= "                </div>\n";
    $retval .= "            </td>\n";
    $retval .= "            <td class='hide no_len'>---</td>\n";
    $retval .= "            <td class='routine_param_opts_text'>\n";
    $retval .= PMA_generateCharsetDropdownBox(
        PMA_CSDROPDOWN_CHARSET,
        "item_param_opts_text[$index]",
        null,
        $routine['item_param_opts_text'][$i]
    );
    $retval .= "            </td>\n";
    $retval .= "            <td class='hide no_opts'>---</td>\n";
    $retval .= "            <td class='routine_param_opts_num'>\n";
    $retval .= "                <select name='item_param_opts_num[$index]'>\n";
    $retval .= "                    <option value=''></option>";
    foreach ($param_opts_num as $key => $value) {
        $selected = "";
        if (! empty($routine['item_param_opts_num'][$i])
            && $routine['item_param_opts_num'][$i] == $value
        ) {
            $selected = " selected='selected'";
        }
        $retval .= "<option$selected>$value</option>";
    }
    $retval .= "\n                </select>\n";
    $retval .= "            </td>\n";
    $retval .= "            <td class='routine_param_remove$drop_class'>\n";
    $retval .= "                <a href='#' class='routine_param_remove_anchor'>\n";
    $retval .= "                    {$titles['Drop']}\n";
    $retval .= "                </a>\n";
    $retval .= "            </td>\n";
    $retval .= "        </tr>\n";

    return $retval;
} // end PMA_RTN_getParameterRow()

/**
 * Displays a form used to add/edit a routine
 *
 * @param   string   $mode         If the editor will be used edit a routine
 *                                 or add a new one: 'edit' or 'add'.
 * @param   string   $operation    If the editor was previously invoked with
 *                                 JS turned off, this will hold the name of
 *                                 the current operation
 * @param   array    $routine      Data for the routine returned by
 *                                 PMA_RTN_getDataFromRequest() or
 *                                 PMA_RTN_getDataFromName()
 *
 * @return  string   HTML code for the editor.
 */
function PMA_RTN_getEditorForm($mode, $operation, $routine)
{
    global $db, $errors, $param_sqldataaccess, $param_opts_num;

    // Escape special characters
    $need_escape = array(
        'item_original_name',
        'item_name',
        'item_returnlength',
        'item_definition',
        'item_definer',
        'item_comment'
    );
    foreach ($need_escape as $key => $index) {
        $routine[$index] = htmlentities($routine[$index], ENT_QUOTES, 'UTF-8');
    }
    for ($i=0; $i<$routine['item_num_params']; $i++) {
        $routine['item_param_name'][$i]   = htmlentities(
            $routine['item_param_name'][$i],
            ENT_QUOTES
        );
        $routine['item_param_length'][$i] = htmlentities(
            $routine['item_param_length'][$i],
            ENT_QUOTES
        );
    }

    // Handle some logic first
    if ($operation == 'change') {
        if ($routine['item_type'] == 'PROCEDURE') {
            $routine['item_type']        = 'FUNCTION';
            $routine['item_type_toggle'] = 'PROCEDURE';
        } else {
            $routine['item_type']        = 'PROCEDURE';
            $routine['item_type_toggle'] = 'FUNCTION';
        }
    } else if ($operation == 'add' || ($routine['item_num_params'] == 0 && $mode == 'add' && ! $errors)) {
        $routine['item_param_dir'][]       = '';
        $routine['item_param_name'][]      = '';
        $routine['item_param_type'][]      = '';
        $routine['item_param_length'][]    = '';
        $routine['item_param_opts_num'][]  = '';
        $routine['item_param_opts_text'][] = '';
        $routine['item_num_params']++;
    } else if ($operation == 'remove') {
        unset($routine['item_param_dir'][$routine['item_num_params']-1]);
        unset($routine['item_param_name'][$routine['item_num_params']-1]);
        unset($routine['item_param_type'][$routine['item_num_params']-1]);
        unset($routine['item_param_length'][$routine['item_num_params']-1]);
        unset($routine['item_param_opts_num'][$routine['item_num_params']-1]);
        unset($routine['item_param_opts_text'][$routine['item_num_params']-1]);
        $routine['item_num_params']--;
    }
    $disable_remove_parameter = '';
    if (! $routine['item_num_params']) {
        $disable_remove_parameter = " color: gray;' disabled='disabled";
    }
    $original_routine = '';
    if ($mode == 'edit') {
        $original_routine = "<input name='item_original_name' "
                          . "type='hidden' "
                          . "value='{$routine['item_original_name']}'/>\n"
                          . "<input name='item_original_type' "
                          . "type='hidden' "
                          . "value='{$routine['item_original_type']}'/>\n";
    }
    $isfunction_class   = '';
    $isprocedure_class  = '';
    $isfunction_select  = '';
    $isprocedure_select = '';
    if ($routine['item_type'] == 'PROCEDURE') {
        $isfunction_class   = ' hide';
        $isprocedure_select = " selected='selected'";
    } else {
        $isprocedure_class = ' hide';
        $isfunction_select = " selected='selected'";
    }

    // Create the output
    $retval  = "";
    $retval .= "<!-- START " . strtoupper($mode) . " ROUTINE FORM -->\n\n";
    $retval .= "<form class='rte_form' action='db_routines.php' method='post'>\n";
    $retval .= "<input name='{$mode}_item' type='hidden' value='1' />\n";
    $retval .= $original_routine;
    $retval .= PMA_generate_common_hidden_inputs($db) . "\n";
    $retval .= "<fieldset>\n";
    $retval .= "<legend>" . __('Details') . "</legend>\n";
    $retval .= "<table class='rte_table' style='width: 100%'>\n";
    $retval .= "<tr>\n";
    $retval .= "    <td style='width: 20%;'>" . __('Routine name') . "</td>\n";
    $retval .= "    <td><input type='text' name='item_name' maxlength='64'\n";
    $retval .= "               value='{$routine['item_name']}' /></td>\n";
    $retval .= "</tr>\n";
    $retval .= "<tr>\n";
    $retval .= "    <td>" . __('Type') . "</td>\n";
    $retval .= "    <td>\n";
    if ($GLOBALS['is_ajax_request']) {
        $retval .= "        <select name='item_type'>\n";
        $retval .= "            <option value='PROCEDURE'$isprocedure_select>PROCEDURE</option>\n";
        $retval .= "            <option value='FUNCTION'$isfunction_select>FUNCTION</option>\n";
        $retval .= "        </select>\n";
    } else {
        $retval .= "        <input name='item_type' type='hidden' value='{$routine['item_type']}' />\n";
        $retval .= "        <div style='width: 49%; float: left; text-align: center; font-weight: bold;'>\n";
        $retval .= "            {$routine['item_type']}\n";
        $retval .= "        </div>\n";
        $retval .= "        <input style='width: 49%;' type='submit' name='routine_changetype'\n";
        $retval .= "               value='".sprintf(__('Change to %s'), $routine['item_type_toggle'])."' />\n";
    }
    $retval .= "    </td>\n";
    $retval .= "</tr>\n";
    $retval .= "<tr>\n";
    $retval .= "    <td>" . __('Parameters') . "</td>\n";
    $retval .= "    <td>\n";
    // parameter handling start
    $retval .= "        <table class='routine_params_table'>\n";
    $retval .= "        <tr>\n";
    $retval .= "            <th class='routine_direction_cell$isprocedure_class'>" . __('Direction') . "</th>\n";
    $retval .= "            <th>" . __('Name') . "</th>\n";
    $retval .= "            <th>" . __('Type') . "</th>\n";
    $retval .= "            <th>" . __('Length/Values') . "</th>\n";
    $retval .= "            <th colspan='2'>" . __('Options') . "</th>\n";
    $retval .= "            <th class='routine_param_remove hide'>&nbsp;</th>\n";
    $retval .= "        </tr>";
    for ($i=0; $i<$routine['item_num_params']; $i++) { // each parameter
        $retval .= PMA_RTN_getParameterRow($routine, $i, $isprocedure_class);
    }
    $retval .= "        </table>\n";
    $retval .= "    </td>\n";
    $retval .= "</tr>\n";
    $retval .= "<tr>\n";
    $retval .= "    <td>&nbsp;</td>\n";
    $retval .= "    <td>\n";
    $retval .= "        <input style='width: 49%;' type='submit' \n";
    $retval .= "               name='routine_addparameter'\n";
    $retval .= "               value='" . __('Add parameter') . "' />\n";
    $retval .= "        <input style='width: 49%;$disable_remove_parameter'\n";
    $retval .= "               type='submit' \n";
    $retval .= "               name='routine_removeparameter'\n";
    $retval .= "               value='" . __('Remove last parameter') . "' />\n";
    $retval .= "    </td>\n";
    $retval .= "</tr>\n";
    // parameter handling end
    $retval .= "<tr class='routine_return_row$isfunction_class'>\n";
    $retval .= "    <td>" . __('Return type') . "</td>\n";
    $retval .= "    <td><select name='item_returntype'>\n";
    $retval .= PMA_getSupportedDatatypes(true, $routine['item_returntype']) . "\n";
    $retval .= "    </select></td>\n";
    $retval .= "</tr>\n";
    $retval .= "<tr class='routine_return_row$isfunction_class'>\n";
    $retval .= "    <td>" . __('Return length/values') . "</td>\n";
    $retval .= "    <td><input type='text' name='item_returnlength'\n";
    $retval .= "               value='{$routine['item_returnlength']}' /></td>\n";
    $retval .= "    <td class='hide no_len'>---</td>\n";
    $retval .= "</tr>\n";
    $retval .= "<tr class='routine_return_row$isfunction_class'>\n";
    $retval .= "    <td>" . __('Return options') . "</td>\n";
    $retval .= "    <td><div>\n";
    $retval .= PMA_generateCharsetDropdownBox(
        PMA_CSDROPDOWN_CHARSET,
        "item_returnopts_text",
        null,
        $routine['item_returnopts_text']
    );
    $retval .= "\n    </div>\n";
    $retval .= "    <div><select name='item_returnopts_num'>\n";
    $retval .= "        <option value=''></option>";
    foreach ($param_opts_num as $key => $value) {
        $selected = "";
        if (! empty($routine['item_returnopts_num'])
            && $routine['item_returnopts_num'] == $value
        ) {
            $selected = " selected='selected'";
        }
        $retval .= "<option$selected>$value</option>";
    }
    $retval .= "\n    </select></div>\n";
    $retval .= "    <div class='hide no_opts'>---</div>\n";
    $retval .= "</td>\n";
    $retval .= "</tr>\n";
    $retval .= "<tr>\n";
    $retval .= "    <td>" . __('Definition') . "</td>\n";
    $retval .= "    <td><textarea name='item_definition' rows='15' cols='40'>";
    $retval .= $routine['item_definition'];
    $retval .= "</textarea></td>\n";
    $retval .= "</tr>\n";
    $retval .= "<tr>\n";
    $retval .= "    <td>" . __('Is deterministic') . "</td>\n";
    $retval .= "    <td><input type='checkbox' name='item_isdeterministic'{$routine['item_isdeterministic']} /></td>\n";
    $retval .= "</tr>\n";
    $retval .= "<tr>\n";
    $retval .= "    <td>" . __('Definer') . "</td>\n";
    $retval .= "    <td><input type='text' name='item_definer'\n";
    $retval .= "               value='{$routine['item_definer']}' /></td>\n";
    $retval .= "</tr>\n";
    $retval .= "<tr>\n";
    $retval .= "    <td>" . __('Security type') . "</td>\n";
    $retval .= "    <td><select name='item_securitytype'>\n";
    $retval .= "        <option value='DEFINER'{$routine['item_securitytype_definer']}>DEFINER</option>\n";
    $retval .= "        <option value='INVOKER'{$routine['item_securitytype_invoker']}>INVOKER</option>\n";
    $retval .= "    </select></td>\n";
    $retval .= "</tr>\n";
    $retval .= "<tr>\n";
    $retval .= "    <td>" . __('SQL data access') . "</td>\n";
    $retval .= "    <td><select name='item_sqldataaccess'>\n";
    foreach ($param_sqldataaccess as $key => $value) {
        $selected = "";
        if ($routine['item_sqldataaccess'] == $value) {
            $selected = " selected='selected'";
        }
        $retval .= "        <option$selected>$value</option>\n";
    }
    $retval .= "    </select></td>\n";
    $retval .= "</tr>\n";
    $retval .= "<tr>\n";
    $retval .= "    <td>" . __('Comment') . "</td>\n";
    $retval .= "    <td><input type='text' name='item_comment' maxlength='64'\n";
    $retval .= "               value='{$routine['item_comment']}' /></td>\n";
    $retval .= "</tr>\n";
    $retval .= "</table>\n";
    $retval .= "</fieldset>\n";
    if ($GLOBALS['is_ajax_request']) {
        $retval .= "<input type='hidden' name='editor_process_{$mode}'\n";
        $retval .= "       value='true' />\n";
        $retval .= "<input type='hidden' name='ajax_request' value='true' />\n";
    } else {
        $retval .= "<fieldset class='tblFooters'>\n";
        $retval .= "    <input type='submit' name='editor_process_{$mode}'\n";
        $retval .= "           value='" . __('Go') . "' />\n";
        $retval .= "</fieldset>\n";
    }
    $retval .= "</form>\n\n";
    $retval .= "<!-- END " . strtoupper($mode) . " ROUTINE FORM -->\n\n";

    return $retval;
} // end PMA_RTN_getEditorForm()

/**
 * Composes the query necessary to create a routine from an HTTP request.
 *
 * @return  string  The CREATE [ROUTINE | PROCEDURE] query.
 */
function PMA_RTN_getQueryFromRequest()
{
    global $_REQUEST, $cfg, $errors, $param_sqldataaccess, $param_directions;

    $_REQUEST['item_type'] = isset($_REQUEST['item_type']) ? $_REQUEST['item_type'] : '';

    $query = 'CREATE ';
    if (! empty($_REQUEST['item_definer'])) {
        if (strpos($_REQUEST['item_definer'], '@') !== false) {
            $arr = explode('@', $_REQUEST['item_definer']);
            $query .= 'DEFINER=' . PMA_backquote($arr[0]);
            $query .= '@' . PMA_backquote($arr[1]) . ' ';
        } else {
            $errors[] = __('The definer must be in the "username@hostname" format');
        }
    }
    if ($_REQUEST['item_type'] == 'FUNCTION'
        || $_REQUEST['item_type'] == 'PROCEDURE'
    ) {
        $query .= $_REQUEST['item_type'] . ' ';
    } else {
        $errors[] = sprintf(__('Invalid routine type: "%s"'), htmlspecialchars($_REQUEST['item_type']));
    }
    if (! empty($_REQUEST['item_name'])) {
        $query .= PMA_backquote($_REQUEST['item_name']);
    } else {
        $errors[] = __('You must provide a routine name');
    }
    $params = '';
    $warned_about_dir    = false;
    $warned_about_name   = false;
    $warned_about_length = false;
    if (   ! empty($_REQUEST['item_param_name'])
        && ! empty($_REQUEST['item_param_type'])
        && ! empty($_REQUEST['item_param_length'])
        && is_array($_REQUEST['item_param_name'])
        && is_array($_REQUEST['item_param_type'])
        && is_array($_REQUEST['item_param_length'])
    ) {
        for ($i=0; $i<count($_REQUEST['item_param_name']); $i++) {
            if (! empty($_REQUEST['item_param_name'][$i]) && ! empty($_REQUEST['item_param_type'][$i])) {
                if ($_REQUEST['item_type'] == 'PROCEDURE'
                    && ! empty($_REQUEST['item_param_dir'][$i])
                    && in_array($_REQUEST['item_param_dir'][$i], $param_directions)
                ) {
                    $params .= $_REQUEST['item_param_dir'][$i] . " " . PMA_backquote($_REQUEST['item_param_name'][$i]) . " "
                            . $_REQUEST['item_param_type'][$i];
                } else if ($_REQUEST['item_type'] == 'FUNCTION') {
                    $params .= PMA_backquote($_REQUEST['item_param_name'][$i]) . " " . $_REQUEST['item_param_type'][$i];
                } else if (! $warned_about_dir) {
                    $warned_about_dir = true;
                    $errors[] = sprintf(
                        __('Invalid direction "%s" given for parameter.'),
                        htmlspecialchars($_REQUEST['item_param_dir'][$i])
                    );
                }
                if ($_REQUEST['item_param_length'][$i] != ''
                    && !preg_match('@^(DATE|DATETIME|TIME|TINYBLOB|TINYTEXT|BLOB|TEXT|MEDIUMBLOB|MEDIUMTEXT|LONGBLOB|LONGTEXT|SERIAL|BOOLEAN)$@i',
                                   $_REQUEST['item_param_type'][$i])
                ) {
                    $params .= "(" . $_REQUEST['item_param_length'][$i] . ")";
                } else if ($_REQUEST['item_param_length'][$i] == '' && preg_match('@^(ENUM|SET|VARCHAR|VARBINARY)$@i', $_REQUEST['item_param_type'][$i])) {
                    if (! $warned_about_length) {
                        $warned_about_length = true;
                        $errors[] = __('You must provide length/values for routine parameters of type ENUM, SET, VARCHAR and VARBINARY.');
                    }
                }
                if (! empty($_REQUEST['item_param_opts_text'][$i])) {
                    if (in_array($_REQUEST['item_param_type'][$i], $cfg['ColumnTypes']['STRING'])) {
                        $params .= ' CHARSET ' . strtolower($_REQUEST['item_param_opts_text'][$i]);
                    }
                }
                if (! empty($_REQUEST['item_param_opts_num'][$i])) {
                    if (in_array($_REQUEST['item_param_type'][$i], $cfg['ColumnTypes']['NUMERIC'])) {
                        $params .= ' ' . strtoupper($_REQUEST['item_param_opts_num'][$i]);
                    }
                }
                if ($i != count($_REQUEST['item_param_name'])-1) {
                    $params .= ", ";
                }
            } else if (! $warned_about_name) {
                $warned_about_name = true;
                $errors[] = __('You must provide a name and a type for each routine parameter.');
                break;
            }
        }
    }
    $query .= "(" . $params . ") ";
    if ($_REQUEST['item_type'] == 'FUNCTION') {
        if (! empty($_REQUEST['item_returntype']) && in_array($_REQUEST['item_returntype'], PMA_getSupportedDatatypes())) {
            $query .= "RETURNS {$_REQUEST['item_returntype']}";
        } else {
            $errors[] = __('You must provide a valid return type for the routine.');
        }
        if (! empty($_REQUEST['item_returnlength'])
            && !preg_match('@^(DATE|DATETIME|TIME|TINYBLOB|TINYTEXT|BLOB|TEXT|MEDIUMBLOB|MEDIUMTEXT|LONGBLOB|LONGTEXT|SERIAL|BOOLEAN)$@i',
                            $_REQUEST['item_returntype'])
        ) {
            $query .= "(" . $_REQUEST['item_returnlength'] . ")";
        } else if (empty($_REQUEST['item_returnlength']) && preg_match('@^(ENUM|SET|VARCHAR|VARBINARY)$@i', $_REQUEST['item_returntype'])) {
            if (! $warned_about_length) {
                $warned_about_length = true;
                $errors[] = __('You must provide length/values for routine parameters of type ENUM, SET, VARCHAR and VARBINARY.');
            }
        }
        if (! empty($_REQUEST['item_returnopts_text'])) {
            if (in_array($_REQUEST['item_returntype'], $cfg['ColumnTypes']['STRING'])) {
                $query .= ' CHARSET ' . strtolower($_REQUEST['item_returnopts_text']);
            }
        }
        if (! empty($_REQUEST['item_returnopts_num'])) {
            if (in_array($_REQUEST['item_returntype'], $cfg['ColumnTypes']['NUMERIC'])) {
                $query .= ' ' . strtoupper($_REQUEST['item_returnopts_num']);
            }
        }
        $query .= ' ';
    }
    if (! empty($_REQUEST['item_comment'])) {
        $query .= "COMMENT '" . PMA_sqlAddslashes($_REQUEST['item_comment']) . "' ";
    }
    if (isset($_REQUEST['item_isdeterministic'])) {
        $query .= 'DETERMINISTIC ';
    } else {
        $query .= 'NOT DETERMINISTIC ';
    }
    if (! empty($_REQUEST['item_sqldataaccess']) && in_array($_REQUEST['item_sqldataaccess'], $param_sqldataaccess)) {
        $query .= $_REQUEST['item_sqldataaccess'] . ' ';
    }
    if (! empty($_REQUEST['item_securitytype'])) {
        if ($_REQUEST['item_securitytype'] == 'DEFINER' || $_REQUEST['item_securitytype'] == 'INVOKER') {
            $query .= 'SQL SECURITY ' . $_REQUEST['item_securitytype'] . ' ';
        }
    }
    if (! empty($_REQUEST['item_definition'])) {
        $query .= $_REQUEST['item_definition'];
    } else {
        $errors[] = __('You must provide a routine definition.');
    }

    return $query;
} // end PMA_RTN_getQueryFromRequest()

/**
 * Handles requests for executing a routine
 */
function PMA_RTN_handleExecute()
{
    global $_GET, $_POST, $_REQUEST, $GLOBALS, $db, $cfg;

    /**
     * Handle all user requests other than the default of listing routines
     */
    if (! empty($_REQUEST['execute_routine']) && ! empty($_REQUEST['item_name'])) {
        // Build the queries
        $routine = PMA_RTN_getDataFromName($_REQUEST['item_name'], $_REQUEST['item_type'], false);
        if ($routine !== false) {
            $queries   = array();
            $end_query = array();
            $args      = array();
            for ($i=0; $i<$routine['item_num_params']; $i++) {
                if (isset($_REQUEST['params'][$routine['item_param_name'][$i]])) {
                    $value = $_REQUEST['params'][$routine['item_param_name'][$i]];
                    if (is_array($value)) { // is SET type
                        $value = implode(',', $value);
                    }
                    $value = PMA_sqlAddSlashes($value);
                    if (! empty($_REQUEST['funcs'][$routine['item_param_name'][$i]])
                        && in_array($_REQUEST['funcs'][$routine['item_param_name'][$i]], $cfg['Functions'])
                    ) {
                        $queries[] = "SET @p$i={$_REQUEST['funcs'][$routine['item_param_name'][$i]]}('$value');\n";
                    } else {
                        $queries[] = "SET @p$i='$value';\n";
                    }
                    $args[] = "@p$i";
                } else {
                    $args[] = "@p$i";
                }
                if ($routine['item_type'] == 'PROCEDURE') {
                    if ($routine['item_param_dir'][$i] == 'OUT'
                        || $routine['item_param_dir'][$i] == 'INOUT'
                    ) {
                        $end_query[] = "@p$i AS " . PMA_backquote($routine['item_param_name'][$i]);
                    }
                }
            }
            if ($routine['item_type'] == 'PROCEDURE') {
                $queries[] = "CALL " . PMA_backquote($routine['item_name'])
                           . "(" . implode(', ', $args) . ");\n";
                if (count($end_query)) {
                    $queries[] = "SELECT " . implode(', ', $end_query) . ";\n";
                }
            } else {
                $queries[] = "SELECT " . PMA_backquote($routine['item_name'])
                           . "(" . implode(', ', $args) . ") "
                           . "AS " . PMA_backquote($routine['item_name']) . ";\n";
            }
            // Execute the queries
            $affected = 0;
            $result = null;
            $outcome = true;
            foreach ($queries as $query) {
                $resource = PMA_DBI_try_query($query);
                if ($resource === false) {
                    $outcome = false;
                    break;
                }
                while (true) {
                    if (! PMA_DBI_more_results()) {
                        break;
                    }
                    PMA_DBI_next_result();
                }
                if (substr($query, 0, 6) == 'SELECT') {
                    $result = $resource;
                } else if (substr($query, 0, 4) == 'CALL') {
                    $result = $resource ? $resource : $result;
                    $affected = PMA_DBI_affected_rows() - PMA_DBI_num_rows($resource);
                }
            }
            // Generate output
            if ($outcome) {
                $message = __('Your SQL query has been executed successfully');
                if ($routine['item_type'] == 'PROCEDURE') {
                    $message .= '<br />';
                    $message .= sprintf(
                        _ngettext(
                            '%d row affected by the last statement inside the procedure',
                            '%d rows affected by the last statement inside the procedure',
                            $affected
                        ),
                        $affected
                    );
                }
                $message = PMA_message::success($message);
                // Pass the SQL queries through the "pretty printer"
                $output  = '<code class="sql" style="margin-bottom: 1em;">';
                $output .= PMA_SQP_formatHtml(PMA_SQP_parse(implode($queries)));
                $output .= '</code>';
                // Display results
                if ($result) {
                    $output .= "<fieldset><legend>";
                    $output .= sprintf(
                        __('Execution results of routine %s'),
                        PMA_backquote(htmlspecialchars($routine['item_name']))
                    );
                    $output .= "</legend>";
                    $output .= "<table><tr>";
                    foreach (PMA_DBI_get_fields_meta($result) as $key => $field) {
                        $output .= "<th>";
                        $output .= htmlspecialchars($field->name);
                        $output .= "</th>";
                    }
                    $output .= "</tr>";
                    // Stored routines can only ever return ONE ROW.
                    $data = PMA_DBI_fetch_single_row($result);
                    foreach ($data as $key => $value) {
                        if ($value === null) {
                            $value = '<i>NULL</i>';
                        } else {
                            $value = htmlspecialchars($value);
                        }
                        $output .= "<td class='odd'>" . $value . "</td>";
                    }
                    $output .= "</table></fieldset>";
                } else {
                    $notice = __('MySQL returned an empty result set (i.e. zero rows).');
                    $output .= PMA_message::notice($notice)->getDisplay();
                }
            } else {
                $output = '';
                $message = PMA_message::error(
                    sprintf(
                        __('The following query has failed: "%s"'),
                        htmlspecialchars($query)
                    )
                    . '<br /><br />'
                    . __('MySQL said: ') . PMA_DBI_getError(null)
                );
            }
            // Print/send output
            if ($GLOBALS['is_ajax_request']) {
                $extra_data = array('dialog' => false);
                PMA_ajaxResponse(
                    $message->getDisplay() . $output,
                    $message->isSuccess(),
                    $extra_data
                );
            } else {
                echo $message->getDisplay() . $output;
                if ($message->isError()) {
                    // At least one query has failed, so shouldn't
                    // execute any more queries, so we quit.
                    exit;
                }
                unset($_POST);
                // Now deliberately fall through to displaying the routines list
            }
        } else {
            $message  = __('Error in processing request') . ' : ';
            $message .= sprintf(
                PMA_RTE_getWord('not_found'),
                htmlspecialchars(PMA_backquote($_REQUEST['item_name'])),
                htmlspecialchars(PMA_backquote($db))
            );
            $message = PMA_message::error($message);
            if ($GLOBALS['is_ajax_request']) {
                PMA_ajaxResponse($message, $message->isSuccess());
            } else {
                echo $message->getDisplay();
                unset($_POST);
            }
        }
    } else if (! empty($_GET['execute_dialog']) && ! empty($_GET['item_name'])) {
        /**
         * Display the execute form for a routine.
         */
        $routine = PMA_RTN_getDataFromName($_GET['item_name'], $_GET['item_type'], true);
        if ($routine !== false) {
            $form = PMA_RTN_getExecuteForm($routine);
            if ($GLOBALS['is_ajax_request'] == true) {
                $extra_data = array();
                $extra_data['dialog'] = true;
                $extra_data['title']  = __("Execute routine") . " ";
                $extra_data['title'] .= PMA_backquote(
                    htmlentities($_GET['item_name'], ENT_QUOTES)
                );
                PMA_ajaxResponse($form, true, $extra_data);
            } else {
                echo "\n\n<h2>" . __("Execute routine") . "</h2>\n\n";
                echo $form;
                include './libraries/footer.inc.php';
                // exit;
            }
        } else if (($GLOBALS['is_ajax_request'] == true)) {
            $message  = __('Error in processing request') . ' : ';
            $message .= sprintf(
                PMA_RTE_getWord('not_found'),
                htmlspecialchars(PMA_backquote($_REQUEST['item_name'])),
                htmlspecialchars(PMA_backquote($db))
            );
            $message = PMA_message::error($message);
            PMA_ajaxResponse($message, false);
        }
    }
}

/**
 * Creates the HTML code that shows the routine execution dialog.
 *
 * @param   array    $routine      Data for the routine returned by
 *                                 PMA_RTN_getDataFromName()
 *
 * @return  string   HTML code for the routine execution dialog.
 */
function PMA_RTN_getExecuteForm($routine)
{
    global $db, $cfg;

    // Escape special characters
    $routine['item_name'] = htmlentities($routine['item_name'], ENT_QUOTES);
    for ($i=0; $i<$routine['item_num_params']; $i++) {
        $routine['item_param_name'][$i] = htmlentities(
            $routine['item_param_name'][$i],
            ENT_QUOTES
        );
    }

    // Create the output
    $retval  = "";
    $retval .= "<!-- START ROUTINE EXECUTE FORM -->\n\n";
    $retval .= "<form action='db_routines.php' method='post' class='rte_form'>\n";
    $retval .= "<input type='hidden' name='item_name'\n";
    $retval .= "       value='{$routine['item_name']}' />\n";
    $retval .= "<input type='hidden' name='item_type'\n";
    $retval .= "       value='{$routine['item_type']}' />\n";
    $retval .= PMA_generate_common_hidden_inputs($db) . "\n";
    $retval .= "<fieldset>\n";
    if ($GLOBALS['is_ajax_request'] != true) {
        $retval .= "<legend>{$routine['item_name']}</legend>\n";
        $retval .= "<table class='rte_table'>\n";
        $retval .= "<caption class='tblHeaders'>\n";
        $retval .= __('Routine parameters');
        $retval .= "</caption>\n";
    } else {
        $retval .= "<legend>" . __('Routine parameters') . "</legend>\n";
        $retval .= "<table class='rte_table' style='width: 100%;'>\n";
    }
    $retval .= "<tr>\n";
    $retval .= "<th>" . __('Name') . "</th>\n";
    $retval .= "<th>" . __('Type') . "</th>\n";
    if ($cfg['ShowFunctionFields']) {
        $retval .= "<th>" . __('Function') . "</th>\n";
    }
    $retval .= "<th>" . __('Value')    . "</th>\n";
    $retval .= "</tr>\n";
    // Get a list of data types that are not yet supported.
    $no_support_types = PMA_unsupportedDatatypes();
    for ($i=0; $i<$routine['item_num_params']; $i++) { // Each parameter
        if ($routine['item_type'] == 'PROCEDURE'
            && $routine['item_param_dir'][$i] == 'OUT'
        ) {
            continue;
        }
        $rowclass = ($i % 2 == 0) ? 'even' : 'odd';
        $retval .= "\n<tr class='$rowclass'>\n";
        $retval .= "<td>{$routine['item_param_name'][$i]}</td>\n";
        $retval .= "<td>{$routine['item_param_type'][$i]}</td>\n";
        if ($cfg['ShowFunctionFields']) {
            $retval .= "<td>\n";
            if (stristr($routine['item_param_type'][$i], 'enum')
                || stristr($routine['item_param_type'][$i], 'set')
                || in_array(strtolower($routine['item_param_type'][$i]), $no_support_types)
            ) {
                $retval .= "--\n";
            } else {
                $field = array(
                    'True_Type'       => strtolower($routine['item_param_type'][$i]),
                    'Type'            => '',
                    'Key'             => '',
                    'Field'           => '',
                    'Default'         => '',
                    'first_timestamp' => false
                );
                $retval .= "<select name='funcs[{$routine['item_param_name'][$i]}]'>";
                $retval .= PMA_getFunctionsForField($field, false);
                $retval .= "</select>";
            }
            $retval .= "</td>\n";
        }
        // Append a class to date/time fields so that
        // jQuery can attach a datepicker to them
        $class = '';
        if ($routine['item_param_type'][$i] == 'DATETIME'
            || $routine['item_param_type'][$i] == 'TIMESTAMP'
        ) {
            $class = 'datetimefield';
        } else if ($routine['item_param_type'][$i] == 'DATE') {
            $class = 'datefield';
        }
        $retval .= "<td class='nowrap'>\n";
        if (in_array($routine['item_param_type'][$i], array('ENUM', 'SET'))) {
            $tokens = PMA_SQP_parse($routine['item_param_length'][$i]);
            if ($routine['item_param_type'][$i] == 'ENUM') {
                $input_type = 'radio';
            } else {
                $input_type = 'checkbox';
            }
            for ($j=0; $j<$tokens['len']; $j++) {
                if ($tokens[$j]['type'] != 'punct_listsep') {
                    $tokens[$j]['data'] = htmlentities(
                        PMA_unquote($tokens[$j]['data']),
                        ENT_QUOTES
                    );
                    $retval .= "<input name='params[{$routine['item_param_name'][$i]}][]' "
                             . "value='{$tokens[$j]['data']}' type='$input_type' />"
                             . "{$tokens[$j]['data']}<br />\n";
                }
            }
        } else if (in_array(strtolower($routine['item_param_type'][$i]), $no_support_types)) {
            $retval .= "\n";
        } else {
            $retval .= "<input class='$class' type='text' name='params[{$routine['item_param_name'][$i]}]' />\n";
        }
        $retval .= "</td>\n";
        $retval .= "</tr>\n";
    }
    $retval .= "\n</table>\n";
    if ($GLOBALS['is_ajax_request'] != true) {
        $retval .= "</fieldset>\n\n";
        $retval .= "<fieldset class='tblFooters'>\n";
        $retval .= "    <input type='submit' name='execute_routine'\n";
        $retval .= "           value='" . __('Go') . "' />\n";
        $retval .= "</fieldset>\n";
    } else {
        $retval .= "<input type='hidden' name='execute_routine' value='true' />";
        $retval .= "<input type='hidden' name='ajax_request' value='true' />";
    }
    $retval .= "</form>\n\n";
    $retval .= "<!-- END ROUTINE EXECUTE FORM -->\n\n";

    return $retval;
} // end PMA_RTN_getExecuteForm()

?>
