sql.php

WEBGAME源码,有架设说明,只是非常简单

<?php
/* $Id: sql.php 9768 2006-11-29 11:04:16Z lem9 $ */
// vim: expandtab sw=4 ts=4 sts=4:
/**
 * @todo    we must handle the case if sql.php is called directly with a query
 *          what returns 0 rows - to prevent cyclic redirects or includes
 */

/**
 * Gets some core libraries
 */
require_once './libraries/common.lib.php';
require_once './libraries/Table.class.php';
require_once './libraries/tbl_indexes.lib.php';
require_once './libraries/check_user_privileges.lib.php';
require_once './libraries/bookmark.lib.php';

/**
 * Could be coming from a subform ("T" column expander)
 */
if (isset($_REQUEST['dontlimitchars'])) {
    $dontlimitchars = $_REQUEST['dontlimitchars'];
}

/**
 * Defines the url to return to in case of error in a sql statement
 */
// Security checkings
if (!empty($goto)) {
    $is_gotofile     = preg_replace('@^([^?]+).*$@s', '\\1', $goto);
    if (!@file_exists('./' . $is_gotofile)) {
        unset($goto);
    } else {
        $is_gotofile = ($is_gotofile == $goto);
    }
} // end if (security checkings)

if (empty($goto)) {
    $goto = (! isset($table) || ! strlen($table)) ? $cfg['DefaultTabDatabase'] : $cfg['DefaultTabTable'];
    $is_gotofile  = true;
} // end if
if (!isset($err_url)) {
    $err_url = (!empty($back) ? $back : $goto)
             . '?' . PMA_generate_common_url(isset($db) ? $db : '')
             . ((strpos(' ' . $goto, 'db_') != 1 && isset($table)) ? '&amp;table=' . urlencode($table) : '');
} // end if

// Coming from a bookmark dialog
if (isset($fields['query'])) {
    $sql_query = $fields['query'];
}

// This one is just to fill $db
if (isset($fields['dbase'])) {
    $db = $fields['dbase'];
}

// Default to browse if no query set an we have table
// (needed for browsing from DefaultTabTable)
if (! isset($sql_query) && isset($table) && isset($db)) {
    require_once './libraries/bookmark.lib.php';
    $book_sql_query = PMA_queryBookmarks($db,
        $GLOBALS['cfg']['Bookmark'], '\'' . PMA_sqlAddslashes($table) . '\'',
        'label');

    if (! empty($book_sql_query)) {
        $sql_query = $book_sql_query;
    } else {
        $sql_query = 'SELECT * FROM ' . PMA_backquote($table);
    }
    unset($book_sql_query);

    // set $goto to what will be displayed if query returns 0 rows
    $goto = 'tbl_structure.php';
} else {
    // Now we can check the parameters
    PMA_checkParameters(array('sql_query'));
}

// instead of doing the test twice
$is_drop_database = preg_match('/DROP[[:space:]]+(DATABASE|SCHEMA)[[:space:]]+/i',
    $sql_query);

/**
 * Check rights in case of DROP DATABASE
 *
 * This test may be bypassed if $is_js_confirmed = 1 (already checked with js)
 * but since a malicious user may pass this variable by url/form, we don't take
 * into account this case.
 */
if (!defined('PMA_CHK_DROP')
    && !$cfg['AllowUserDropDatabase']
    && $is_drop_database
    && !$is_superuser) {
    require_once './libraries/header.inc.php';
    PMA_mysqlDie($strNoDropDatabases, '', '', $err_url);
} // end if


/**
 * Need to find the real end of rows?
 */

if (isset($find_real_end) && $find_real_end) {
    $unlim_num_rows = PMA_Table::countRecords($db, $table, true, true);
    $pos = @((ceil($unlim_num_rows / $session_max_rows) - 1) * $session_max_rows);
}
/**
 * Avoids undefined variables
 */
elseif (!isset($pos)) {
    $pos = 0;
} else {
    /* We need this to be a integer */
    $pos = (int)$pos;
}

/**
 * Bookmark add
 */
if (isset($store_bkm)) {
    PMA_addBookmarks($fields, $cfg['Bookmark'], (isset($bkm_all_users) && $bkm_all_users == 'true' ? true : false));
    PMA_sendHeaderLocation($cfg['PmaAbsoluteUri'] . $goto);
} // end if


/**
 * Gets the true sql query
 */
// $sql_query has been urlencoded in the confirmation form for drop/delete
// queries or in the navigation bar for browsing among records
if (isset($btnDrop) || isset($navig)) {
    $sql_query = urldecode($sql_query);
}

/**
 * Parse and analyze the query
 */
require_once('./libraries/parse_analyze.lib.php');

/**
 * Sets or modifies the $goto variable if required
 */
if ($goto == 'sql.php') {
    $is_gotofile = false;
    $goto = 'sql.php?'
          . PMA_generate_common_url($db, $table)
          . '&amp;pos=' . $pos
          . '&amp;sql_query=' . urlencode($sql_query);
} // end if


/**
 * Go back to further page if table should not be dropped
 */
if (isset($btnDrop) && $btnDrop == $strNo) {
    if (!empty($back)) {
        $goto = $back;
    }
    if ($is_gotofile) {
        if (strpos(' ' . $goto, 'db_') == 1 && isset($table) && strlen($table)) {
            unset($table);
        }
        $active_page = $goto;
        require './' . PMA_securePath($goto);
    } else {
        PMA_sendHeaderLocation($cfg['PmaAbsoluteUri'] . str_replace('&amp;', '&', $goto));
    }
    exit();
} // end if


/**
 * Displays the confirm page if required
 *
 * This part of the script is bypassed if $is_js_confirmed = 1 (already checked
 * with js) because possible security issue is not so important here: at most,
 * the confirm message isn't displayed.
 *
 * Also bypassed if only showing php code.or validating a SQL query
 */
if (!$cfg['Confirm']
    || (isset($is_js_confirmed) && $is_js_confirmed)
    || isset($btnDrop)

    // if we are coming from a "Create PHP code" or a "Without PHP Code"
    // dialog, we won't execute the query anyway, so don't confirm
    //|| !empty($GLOBALS['show_as_php'])
    || isset($GLOBALS['show_as_php'])

    || !empty($GLOBALS['validatequery'])) {
    $do_confirm = false;
} else {
    $do_confirm = isset($analyzed_sql[0]['queryflags']['need_confirm']);
}

if ($do_confirm) {
    $stripped_sql_query = $sql_query;
    require_once './libraries/header.inc.php';
    if ($is_drop_database) {
        echo '<h1 class="warning">' . $strDropDatabaseStrongWarning . '</h1>';
    }
    echo '<form action="sql.php" method="post">' . "\n"
        .PMA_generate_common_hidden_inputs($db, (isset($table)?$table:''));
    ?>
    <input type="hidden" name="sql_query" value="<?php echo urlencode($sql_query); ?>" />
    <input type="hidden" name="zero_rows" value="<?php echo isset($zero_rows) ? PMA_sanitize($zero_rows) : ''; ?>" />
    <input type="hidden" name="goto" value="<?php echo $goto; ?>" />
    <input type="hidden" name="back" value="<?php echo isset($back) ? PMA_sanitize($back) : ''; ?>" />
    <input type="hidden" name="reload" value="<?php echo isset($reload) ? PMA_sanitize($reload) : 0; ?>" />
    <input type="hidden" name="purge" value="<?php echo isset($purge) ? PMA_sanitize($purge) : ''; ?>" />
    <input type="hidden" name="cpurge" value="<?php echo isset($cpurge) ? PMA_sanitize($cpurge) : ''; ?>" />
    <input type="hidden" name="purgekey" value="<?php echo isset($purgekey) ? PMA_sanitize($purgekey) : ''; ?>" />
    <input type="hidden" name="show_query" value="<?php echo isset($show_query) ? PMA_sanitize($show_query) : ''; ?>" />
    <?php
    echo '<fieldset class="confirmation">' . "\n"
        .'    <legend>' . $strDoYouReally . '</legend>'
        .'    <tt>' . htmlspecialchars($stripped_sql_query) . '</tt>' . "\n"
        .'</fieldset>' . "\n"
        .'<fieldset class="tblFooters">' . "\n";
    ?>
    <input type="submit" name="btnDrop" value="<?php echo $strYes; ?>" id="buttonYes" />
    <input type="submit" name="btnDrop" value="<?php echo $strNo; ?>" id="buttonNo" />
    <?php
    echo '</fieldset>' . "\n"
       . '</form>' . "\n";

    /**
     * Displays the footer and exit
     */
    require_once './libraries/footer.inc.php';
} // end if $do_confirm


/**
 * Executes the query and displays results
 */
if (!isset($sql_query)) {
    $sql_query = '';
}

// Defines some variables
// A table has to be created or renamed -> left frame should be reloaded
/**
 * @todo use the parser/analyzer
 */

if (empty($reload)
    && preg_match('/^(CREATE|ALTER|DROP)\s+(VIEW|TABLE|DATABASE|SCHEMA)\s+/i', $sql_query)) {
    $reload           = 1;
}
// Gets the number of rows per page
if (empty($session_max_rows)) {
    $session_max_rows = $cfg['MaxRows'];
} elseif ($session_max_rows != 'all') {
    $cfg['MaxRows']   = $session_max_rows;
}
// Defines the display mode (horizontal/vertical) and header "frequency"
if (empty($disp_direction)) {
    $disp_direction   = $cfg['DefaultDisplay'];
}
if (empty($repeat_cells)) {
    $repeat_cells     = $cfg['RepeatCells'];
}

// SK -- Patch: $is_group added for use in calculation of total number of
//              rows.
//              $is_count is changed for more correct "LIMIT" clause
//              appending in queries like
//                "SELECT COUNT(...) FROM ... GROUP BY ..."

/**
 * @todo detect all this with the parser, to avoid problems finding
 * those strings in comments or backquoted identifiers