config.class.php

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     * has changed
     *
     * @param   string $source  config file
     */
    function load($source = null)
    {
        $this->loadDefaults();

        if (null !== $source) {
            $this->setSource($source);
        }

        if (! $this->checkConfigSource()) {
            return false;
        }

        $cfg = array();

        /**
         * Parses the configuration file
         */
        $old_error_reporting = error_reporting(0);
        if (function_exists('file_get_contents')) {
            $eval_result =
                eval('?>' . trim(file_get_contents($this->getSource())));
        } else {
            $eval_result =
                eval('?>' . trim(implode("\n", file($this->getSource()))));
        }
        error_reporting($old_error_reporting);

        if ($eval_result === false) {
            $this->error_config_file = true;
        } else  {
            $this->error_config_file = false;
            $this->source_mtime = filemtime($this->getSource());
        }

        /**
         * Backward compatibility code
         */
        if (!empty($cfg['DefaultTabTable'])) {
            $cfg['DefaultTabTable'] = str_replace('_properties', '', str_replace('tbl_properties.php', 'tbl_sql.php', $cfg['DefaultTabTable']));
        }
        if (!empty($cfg['DefaultTabDatabase'])) {
            $cfg['DefaultTabDatabase'] = str_replace('_details', '', str_replace('db_details.php', 'db_sql.php', $cfg['DefaultTabDatabase']));
        }

        $this->checkFontsize();
        //$this->checkPmaAbsoluteUri();
        $this->settings = PMA_array_merge_recursive($this->settings, $cfg);

        // Handling of the collation must be done after merging of $cfg
        // (from config.inc.php) so that $cfg['DefaultConnectionCollation']
        // can have an effect. Note that the presence of collation
        // information in a cookie has priority over what is defined
        // in the default or user's config files.
        /**
         * @todo check validity of $_COOKIE['pma_collation_connection']
         */
        if (! empty($_COOKIE['pma_collation_connection'])) {
            $this->set('collation_connection',
                strip_tags($_COOKIE['pma_collation_connection']));
        } else {
            $this->set('collation_connection',
                $this->get('DefaultConnectionCollation'));
        }
        // Now, a collation information could come from REQUEST
        // (an example of this: the collation selector in main.php)
        // so the following handles the setting of collation_connection
        // and later, in common.inc.php, the cookie will be set
        // according to this.
        $this->checkCollationConnection();

        return true;
    }

    /**
     * set source
     * @param   string  $source
     */
    function setSource($source)
    {
        $this->source = trim($source);
    }

    /**
     * checks if the config folder still exists and terminates app if true
     */
    function checkConfigFolder()
    {
        // Refuse to work while there still might be some world writable dir:
        if (is_dir('./config')) {
            die('Remove "./config" directory before using phpMyAdmin!');
        }
    }

    /**
     * check config source
     *
     * @return  boolean whether source is valid or not
     */
    function checkConfigSource()
    {
        if (! $this->getSource()) {
            // no configuration file set at all
            return false;
        }

        if (! file_exists($this->getSource())) {
            // do not trigger error here
            // https://sf.net/tracker/?func=detail&aid=1370269&group_id=23067&atid=377408
            /*
            trigger_error(
                'phpMyAdmin-ERROR: unkown configuration source: ' . $source,
                E_USER_WARNING);
            */
            $this->source_mtime = 0;
            return false;
        }

        if (! is_readable($this->getSource())) {
            $this->source_mtime = 0;
            die('Existing configuration file (' . $this->getSource() . ') is not readable.');
        }

        // Check for permissions (on platforms that support it):
        if ($this->get('CheckConfigurationPermissions')) {
            $perms = @fileperms($this->getSource());
            if (!($perms === false) && ($perms & 2)) {
                // This check is normally done after loading configuration
                $this->checkWebServerOs();
                if ($this->get('PMA_IS_WINDOWS') == 0) {
                    $this->source_mtime = 0;
                    die('Wrong permissions on configuration file, should not be world writable!');
                }
            }
        }

        return true;
    }

    /**
     * returns specific config setting
     * @param   string  $setting
     * @return  mixed   value
     */
    function get($setting)
    {
        if (isset($this->settings[$setting])) {
            return $this->settings[$setting];
        }
        return null;
    }

    /**
     * sets configuration variable
     *
     * @uses    $this->settings
     * @param   string  $setting    configuration option
     * @param   string  $value      new value for configuration option
     */
    function set($setting, $value)
    {
        if (!isset($this->settings[$setting]) || $this->settings[$setting] != $value) {
            $this->settings[$setting] = $value;
            $this->set_mtime = time();
        }
    }

    /**
     * returns source for current config
     * @return  string  config source
     */
    function getSource()
    {
        return $this->source;
    }

    /**
     * returns a unique value to force a CSS reload if either the config
     * or the theme changes
     * must also check the pma_fontsize cookie in case there is no
     * config file
     * @return  int  Unix timestamp
     */
    function getThemeUniqueValue()
    {
        return intval((null !== $_SESSION['PMA_Config']->get('fontsize') ? $_SESSION['PMA_Config']->get('fontsize') : (isset($_COOKIE['pma_fontsize']) ? $_COOKIE['pma_fontsize'] : 0))) + ($this->source_mtime + $this->default_source_mtime + $_SESSION['PMA_Theme']->mtime_info + $_SESSION['PMA_Theme']->filesize_info) . (isset($_SESSION['userconf']['custom_color']) ? substr($_SESSION['userconf']['custom_color'],1,6) : '');
    }

    /**
     * $cfg['PmaAbsoluteUri'] is a required directive else cookies won't be
     * set properly and, depending on browsers, inserting or updating a
     * record might fail
     */
    function checkPmaAbsoluteUri()
    {
        // Setup a default value to let the people and lazy sysadmins work anyway,
        // they'll get an error if the autodetect code doesn't work
        $pma_absolute_uri = $this->get('PmaAbsoluteUri');
        $is_https = $this->get('is_https');

        if (strlen($pma_absolute_uri) < 5
            // needed to catch http/https switch
            || ($is_https && substr($pma_absolute_uri, 0, 6) != 'https:')
            || (!$is_https && substr($pma_absolute_uri, 0, 5) != 'http:')
        ) {
            $url = array();

            // At first we try to parse REQUEST_URI, it might contain full URL
            /**
             * REQUEST_URI contains PATH_INFO too, this is not what we want
             * script-php/pathinfo/
            if (PMA_getenv('REQUEST_URI')) {
                $url = @parse_url(PMA_getenv('REQUEST_URI')); // produces E_WARNING if it cannot get parsed, e.g. '/foobar:/'
                if ($url === false) {
                    $url = array('path' => $_SERVER['REQUEST_URI']);
                }
            }
             */

            // If we don't have scheme, we didn't have full URL so we need to
            // dig deeper
            if (empty($url['scheme'])) {
                // Scheme
                if (PMA_getenv('HTTP_SCHEME')) {
                    $url['scheme'] = PMA_getenv('HTTP_SCHEME');
                } else {
                    $url['scheme'] =
                        PMA_getenv('HTTPS') && strtolower(PMA_getenv('HTTPS')) != 'off'
                            ? 'https'
                            : 'http';
                }

                // Host and port
                if (PMA_getenv('HTTP_HOST')) {
                    if (strpos(PMA_getenv('HTTP_HOST'), ':') !== false) {
                        list($url['host'], $url['port']) =
                            explode(':', PMA_getenv('HTTP_HOST'));
                    } else {
                        $url['host'] = PMA_getenv('HTTP_HOST');
                    }
                } elseif (PMA_getenv('SERVER_NAME')) {
                    $url['host'] = PMA_getenv('SERVER_NAME');
                } else {
                    $this->error_pma_uri = true;
                    return false;
                }

                // If we didn't set port yet...
                if (empty($url['port']) && PMA_getenv('SERVER_PORT')) {
                    $url['port'] = PMA_getenv('SERVER_PORT');
                }

                // And finally the path could be already set from REQUEST_URI
                if (empty($url['path'])) {
                    /**
                     * REQUEST_URI contains PATH_INFO too, this is not what we want
                     * script-php/pathinfo/
                    if (PMA_getenv('PATH_INFO')) {
                        $path = parse_url(PMA_getenv('PATH_INFO'));
                    } else {
                        // PHP_SELF in CGI often points to cgi executable, so use it
                        // as last choice
                     */
                        $path = parse_url($GLOBALS['PMA_PHP_SELF']);
                    //}
                    $url['path'] = $path['path'];
                }
            }

            // Make url from parts we have
            $pma_absolute_uri = $url['scheme'] . '://';
            // Was there user information?
            if (!empty($url['user'])) {
                $pma_absolute_uri .= $url['user'];
                if (!empty($url['pass'])) {
                    $pma_absolute_uri .= ':' . $url['pass'];
                }
                $pma_absolute_uri .= '@';
            }
            // Add hostname
            $pma_absolute_uri .= $url['host'];
            // Add port, if it not the default one
            if (! empty($url['port'])
              && (($url['scheme'] == 'http' && $url['port'] != 80)
                || ($url['scheme'] == 'https' && $url['port'] != 443))) {
                $pma_absolute_uri .= ':' . $url['port'];
            }
            // And finally path, without script name, the 'a' is there not to
            // strip our directory, when path is only /pmadir/ without filename.
            // Backslashes returned by Windows have to be changed.
            // Only replace backslashes by forward slashes if on Windows,
            // as the backslash could be valid on a non-Windows system.
            if ($this->get('PMA_IS_WINDOWS') == 1) {
                $path = str_replace("\\", "/", dirname($url['path'] . 'a'));
            } else {
                $path = dirname($url['path'] . 'a');
            }

            // To work correctly within transformations overview:
            if (defined('PMA_PATH_TO_BASEDIR') && PMA_PATH_TO_BASEDIR == '../../') {
                if ($this->get('PMA_IS_WINDOWS') == 1) {
                    $path = str_replace("\\", "/", dirname(dirname($path)));
                } else {
                    $path = dirname(dirname($path));
                }
            }
            // in vhost situations, there could be already an ending slash
            if (substr($path, -1) != '/') {
                $path .= '/';
            }
            $pma_absolute_uri .= $path;

            // We used to display a warning if PmaAbsoluteUri wasn't set, but now
            // the autodetect code works well enough that we don't display the
            // warning at all. The user can still set PmaAbsoluteUri manually.
            // See
            // http://sf.net/tracker/?func=detail&aid=1257134&group_id=23067&atid=377411

        } else {
            // The URI is specified, however users do often specify this
            // wrongly, so we try to fix this.

            // Adds a trailing slash et the end of the phpMyAdmin uri if it
            // does not exist.
            if (substr($pma_absolute_uri, -1) != '/') {
                $pma_absolute_uri .= '/';
            }

            // If URI doesn't start with http:// or https://, we will add
            // this.
            if (substr($pma_absolute_uri, 0, 7) != 'http://'
              && substr($pma_absolute_uri, 0, 8) != 'https://') {
                $pma_absolute_uri =
                    (PMA_getenv('HTTPS') && strtolower(PMA_getenv('HTTPS')) != 'off'
                        ? 'https'
                        : 'http')
                    . ':' . (substr($pma_absolute_uri, 0, 2) == '//' ? '' : '//')
                    . $pma_absolute_uri;
            }
        }
        $this->set('PmaAbsoluteUri', $pma_absolute_uri);
    }

    /**
     * check selected collation_connection
     * @todo check validity of $_REQUEST['collation_connection']
     */
    function checkCollationConnection()