Initial commit of intern.ccwn.org contentsHEADmaster

1 files changed, 1836 insertions, 0 deletions

diff --git a/hugo/libraries/Config.class.php b/hugo/libraries/Config.class.php
new file mode 100644
index 0000000..96c81bc
--- /dev/null
+++ b/hugo/libraries/Config.class.php
@@ -0,0 +1,1836 @@
+<?php
+/* vim: set expandtab sw=4 ts=4 sts=4: */
+/**
+ * Configuration handling.
+ *
+ * @package PhpMyAdmin
+ */
+
+if (! defined('PHPMYADMIN')) {
+    exit;
+}
+
+/**
+ * Load vendor configuration.
+ */
+require_once './libraries/vendor_config.php';
+
+/**
+ * Configuration class
+ *
+ * @package PhpMyAdmin
+ */
+class PMA_Config
+{
+    /**
+     * @var string  default config source
+     */
+    var $default_source = './libraries/config.default.php';
+
+    /**
+     * @var array   default configuration settings
+     */
+    var $default = array();
+
+    /**
+     * @var array   configuration settings
+     */
+    var $settings = array();
+
+    /**
+     * @var string  config source
+     */
+    var $source = '';
+
+    /**
+     * @var int     source modification time
+     */
+    var $source_mtime = 0;
+    var $default_source_mtime = 0;
+    var $set_mtime = 0;
+
+    /**
+     * @var boolean
+     */
+    var $error_config_file = false;
+
+    /**
+     * @var boolean
+     */
+    var $error_config_default_file = false;
+
+    /**
+     * @var boolean
+     */
+    var $error_pma_uri = false;
+
+    /**
+     * @var array
+     */
+    var $default_server = array();
+
+    /**
+     * @var boolean whether init is done or not
+     * set this to false to force some initial checks
+     * like checking for required functions
+     */
+    var $done = false;
+
+    /**
+     * constructor
+     *
+     * @param string $source source to read config from
+     */
+    function __construct($source = null)
+    {
+        $this->settings = array();
+
+        // functions need to refresh in case of config file changed goes in
+        // PMA_Config::load()
+        $this->load($source);
+
+        // other settings, independent from config file, comes in
+        $this->checkSystem();
+
+        $this->checkIsHttps();
+    }
+
+    /**
+     * sets system and application settings
+     *
+     * @return void
+     */
+    function checkSystem()
+    {
+        $this->set('PMA_VERSION', '4.0.7');
+        /**
+         * @deprecated
+         */
+        $this->set('PMA_THEME_VERSION', 2);
+        /**
+         * @deprecated
+         */
+        $this->set('PMA_THEME_GENERATION', 2);
+
+        $this->checkPhpVersion();
+        $this->checkWebServerOs();
+        $this->checkWebServer();
+        $this->checkGd2();
+        $this->checkClient();
+        $this->checkUpload();
+        $this->checkUploadSize();
+        $this->checkOutputCompression();
+    }
+
+    /**
+     * whether to use gzip output compression or not
+     *
+     * @return void
+     */
+    function checkOutputCompression()
+    {
+        // If zlib output compression is set in the php configuration file, no
+        // output buffering should be run
+        if (@ini_get('zlib.output_compression')) {
+            $this->set('OBGzip', false);
+        }
+
+        // disable output-buffering (if set to 'auto') for IE6, else enable it.
+        if (strtolower($this->get('OBGzip')) == 'auto') {
+            if ($this->get('PMA_USR_BROWSER_AGENT') == 'IE'
+                && $this->get('PMA_USR_BROWSER_VER') >= 6
+                && $this->get('PMA_USR_BROWSER_VER') < 7
+            ) {
+                $this->set('OBGzip', false);
+            } else {
+                $this->set('OBGzip', true);
+            }
+        }
+    }
+
+    /**
+     * Determines platform (OS), browser and version of the user
+     * Based on a phpBuilder article:
+     *
+     * @see http://www.phpbuilder.net/columns/tim20000821.php
+     *
+     * @return void
+     */
+    function checkClient()
+    {
+        if (PMA_getenv('HTTP_USER_AGENT')) {
+            $HTTP_USER_AGENT = PMA_getenv('HTTP_USER_AGENT');
+        } else {
+            $HTTP_USER_AGENT = '';
+        }
+
+        // 1. Platform
+        if (strstr($HTTP_USER_AGENT, 'Win')) {
+            $this->set('PMA_USR_OS', 'Win');
+        } elseif (strstr($HTTP_USER_AGENT, 'Mac')) {
+            $this->set('PMA_USR_OS', 'Mac');
+        } elseif (strstr($HTTP_USER_AGENT, 'Linux')) {
+            $this->set('PMA_USR_OS', 'Linux');
+        } elseif (strstr($HTTP_USER_AGENT, 'Unix')) {
+            $this->set('PMA_USR_OS', 'Unix');
+        } elseif (strstr($HTTP_USER_AGENT, 'OS/2')) {
+            $this->set('PMA_USR_OS', 'OS/2');
+        } else {
+            $this->set('PMA_USR_OS', 'Other');
+        }
+
+        // 2. browser and version
+        // (must check everything else before Mozilla)
+
+        if (preg_match(
+            '@Opera(/| )([0-9].[0-9]{1,2})@',
+            $HTTP_USER_AGENT,
+            $log_version
+        )) {
+            $this->set('PMA_USR_BROWSER_VER', $log_version[2]);
+            $this->set('PMA_USR_BROWSER_AGENT', 'OPERA');
+        } elseif (preg_match(
+            '@MSIE ([0-9].[0-9]{1,2})@',
+            $HTTP_USER_AGENT,
+            $log_version
+        )) {
+            $this->set('PMA_USR_BROWSER_VER', $log_version[1]);
+            $this->set('PMA_USR_BROWSER_AGENT', 'IE');
+        } elseif (preg_match(
+            '@OmniWeb/([0-9].[0-9]{1,2})@',
+            $HTTP_USER_AGENT,
+            $log_version
+        )) {
+            $this->set('PMA_USR_BROWSER_VER', $log_version[1]);
+            $this->set('PMA_USR_BROWSER_AGENT', 'OMNIWEB');
+            // Konqueror 2.2.2 says Konqueror/2.2.2
+            // Konqueror 3.0.3 says Konqueror/3
+        } elseif (preg_match(
+            '@(Konqueror/)(.*)(;)@',
+            $HTTP_USER_AGENT,
+            $log_version
+        )) {
+            $this->set('PMA_USR_BROWSER_VER', $log_version[2]);
+            $this->set('PMA_USR_BROWSER_AGENT', 'KONQUEROR');
+            // must check Chrome before Safari
+        } elseif (preg_match(
+            '@Mozilla/([0-9].[0-9]{1,2})@',
+            $HTTP_USER_AGENT,
+            $log_version)
+            && preg_match('@Chrome/([0-9]*)@', $HTTP_USER_AGENT, $log_version2)
+        ) {
+            $this->set('PMA_USR_BROWSER_VER', $log_version[1] . '.' . $log_version2[1]);
+            $this->set('PMA_USR_BROWSER_AGENT', 'CHROME');
+            // newer Safari
+        } elseif (preg_match(
+            '@Mozilla/([0-9].[0-9]{1,2})@',
+            $HTTP_USER_AGENT,
+            $log_version)
+            && preg_match('@Version/(.*) Safari@', $HTTP_USER_AGENT, $log_version2)
+        ) {
+            $this->set(
+                'PMA_USR_BROWSER_VER', $log_version2[1]
+            );
+            $this->set('PMA_USR_BROWSER_AGENT', 'SAFARI');
+            // older Safari
+        } elseif (preg_match(
+            '@Mozilla/([0-9].[0-9]{1,2})@',
+            $HTTP_USER_AGENT,
+            $log_version)
+            && preg_match('@Safari/([0-9]*)@', $HTTP_USER_AGENT, $log_version2)
+        ) {
+            $this->set(
+                'PMA_USR_BROWSER_VER', $log_version[1] . '.' . $log_version2[1]
+            );
+            $this->set('PMA_USR_BROWSER_AGENT', 'SAFARI');
+        } elseif (preg_match('@rv:1.9(.*)Gecko@', $HTTP_USER_AGENT)) {
+            $this->set('PMA_USR_BROWSER_VER', '1.9');
+            $this->set('PMA_USR_BROWSER_AGENT', 'GECKO');
+        } elseif (preg_match('@Mozilla/([0-9].[0-9]{1,2})@', $HTTP_USER_AGENT, $log_version)) {
+            $this->set('PMA_USR_BROWSER_VER', $log_version[1]);
+            $this->set('PMA_USR_BROWSER_AGENT', 'MOZILLA');
+        } else {
+            $this->set('PMA_USR_BROWSER_VER', 0);
+            $this->set('PMA_USR_BROWSER_AGENT', 'OTHER');
+        }
+    }
+
+    /**
+     * Whether GD2 is present
+     *
+     * @return void
+     */
+    function checkGd2()
+    {
+        if ($this->get('GD2Available') == 'yes') {
+            $this->set('PMA_IS_GD2', 1);
+        } elseif ($this->get('GD2Available') == 'no') {
+            $this->set('PMA_IS_GD2', 0);
+        } else {
+            if (!@function_exists('imagecreatetruecolor')) {
+                $this->set('PMA_IS_GD2', 0);
+            } else {
+                if (@function_exists('gd_info')) {
+                    $gd_nfo = gd_info();
+                    if (strstr($gd_nfo["GD Version"], '2.')) {
+                        $this->set('PMA_IS_GD2', 1);
+                    } else {
+                        $this->set('PMA_IS_GD2', 0);
+                    }
+                } else {
+                    $this->set('PMA_IS_GD2', 0);
+                }
+            }
+        }
+    }
+
+    /**
+     * Whether the Web server php is running on is IIS
+     *
+     * @return void
+     */
+    function checkWebServer()
+    {
+        // some versions return Microsoft-IIS, some Microsoft/IIS
+        // we could use a preg_match() but it's slower
+        if (PMA_getenv('SERVER_SOFTWARE')
+            && stristr(PMA_getenv('SERVER_SOFTWARE'), 'Microsoft')
+            && stristr(PMA_getenv('SERVER_SOFTWARE'), 'IIS')
+        ) {
+            $this->set('PMA_IS_IIS', 1);
+        } else {
+            $this->set('PMA_IS_IIS', 0);
+        }
+    }
+
+    /**
+     * Whether the os php is running on is windows or not
+     *
+     * @return void
+     */
+    function checkWebServerOs()
+    {
+        // Default to Unix or Equiv
+        $this->set('PMA_IS_WINDOWS', 0);
+        // If PHP_OS is defined then continue
+        if (defined('PHP_OS')) {
+            if (stristr(PHP_OS, 'win')) {
+                // Is it some version of Windows
+                $this->set('PMA_IS_WINDOWS', 1);
+            } elseif (stristr(PHP_OS, 'OS/2')) {
+                // Is it OS/2 (No file permissions like Windows)
+                $this->set('PMA_IS_WINDOWS', 1);
+            }
+        }
+    }
+
+    /**
+     * detects PHP version
+     *
+     * @return void
+     */
+    function checkPhpVersion()
+    {
+        $match = array();
+        if (! preg_match(
+            '@([0-9]{1,2}).([0-9]{1,2}).([0-9]{1,2})@',
+            phpversion(),
+            $match
+        )) {
+            preg_match(
+                '@([0-9]{1,2}).([0-9]{1,2})@',
+                phpversion(),
+                $match
+            );
+        }
+        if (isset($match) && ! empty($match[1])) {
+            if (! isset($match[2])) {
+                $match[2] = 0;
+            }
+            if (! isset($match[3])) {
+                $match[3] = 0;
+            }
+            $this->set(
+                'PMA_PHP_INT_VERSION',
+                (int) sprintf('%d%02d%02d', $match[1], $match[2], $match[3])
+            );
+        } else {
+            $this->set('PMA_PHP_INT_VERSION', 0);
+        }
+        $this->set('PMA_PHP_STR_VERSION', phpversion());
+    }
+
+    /**
+     * detects if Git revision
+     *
+     * @return boolean
+     */
+    function isGitRevision()
+    {
+        // caching
+        if (isset($_SESSION['is_git_revision'])) {
+            if ($_SESSION['is_git_revision']) {
+                $this->set('PMA_VERSION_GIT', 1);
+            }
+            return $_SESSION['is_git_revision'];
+        }
+        // find out if there is a .git folder
+        $git_folder = '.git';
+        if (! @file_exists($git_folder)
+            || ! @file_exists($git_folder . '/config')
+        ) {
+            $_SESSION['is_git_revision'] = false;
+            return false;
+        }
+        $_SESSION['is_git_revision'] = true;
+        return true;
+    }
+
+    /**
+     * detects Git revision, if running inside repo
+     *
+     * @return void
+     */
+    function checkGitRevision()
+    {
+        // find out if there is a .git folder
+        $git_folder = '.git';
+        if (! $this->isGitRevision()) {
+            return;
+        }
+
+        if (! $ref_head = @file_get_contents($git_folder . '/HEAD')) {
+            return;
+        }
+        $branch = false;
+        // are we on any branch?
+        if (strstr($ref_head, '/')) {
+            $ref_head = substr(trim($ref_head), 5);
+            if (substr($ref_head, 0, 11) === 'refs/heads/') {
+                $branch = substr($ref_head, 11);
+            } else {
+                $branch = basename($ref_head);
+            }
+
+            $ref_file = $git_folder . '/' . $ref_head;
+            if (@file_exists($ref_file)) {
+                if (! $hash = @file_get_contents($ref_file)) {
+                    return;
+                }
+                $hash = trim($hash);
+            } else {
+                // deal with packed refs
+                if (! $packed_refs = @file_get_contents($git_folder . '/packed-refs')) {
+                    return;
+                }
+                // split file to lines
+                $ref_lines = explode("\n", $packed_refs);
+                foreach ($ref_lines as $line) {
+                    // skip comments
+                    if ($line[0] == '#') {
+                        continue;
+                    }
+                    // parse line
+                    $parts = explode(' ', $line);
+                    // care only about named refs
+                    if (count($parts) != 2) {
+                        continue;
+                    }
+                    // have found our ref?
+                    if ($parts[1] == $ref_head) {
+                        $hash = $parts[0];
+                        break;
+                    }
+                }
+                if (! isset($hash)) {
+                    // Could not find ref
+                    return;
+                }
+            }
+        } else {
+            $hash = trim($ref_head);
+        }
+
+        $commit = false;
+        if ( !isset($_SESSION['PMA_VERSION_COMMITDATA_' . $hash])) {
+            $git_file_name = $git_folder . '/objects/' . substr($hash, 0, 2)
+                    . '/' . substr($hash, 2);
+            if (file_exists($git_file_name) ) {
+                if (! $commit = @file_get_contents($git_file_name)) {
+                    return;
+                }
+                $commit = explode("\0", gzuncompress($commit), 2);
+                $commit = explode("\n", $commit[1]);
+                $_SESSION['PMA_VERSION_COMMITDATA_' . $hash] = $commit;
+            } else {
+                $pack_names = array();
+                // work with packed data
+                if ($packs = @file_get_contents($git_folder . '/objects/info/packs')) {
+                    // File exists. Read it, parse the file to get the names of the
+                    // packs. (to look for them in .git/object/pack directory later)
+                    foreach (explode("\n", $packs) as $line) {
+                        // skip blank lines
+                        if (strlen(trim($line)) == 0) {
+                            continue;
+                        }
+                        // skip non pack lines
+                        if ($line[0] != 'P') {
+                            continue;
+                        }
+                        // parse names
+                        $pack_names[] = substr($line, 2);
+                    }
+                } else {
+                    // '.git/objects/info/packs' file can be missing
+                    // (atlease in mysGit)
+                    // File missing. May be we can look in the .git/object/pack
+                    // directory for all the .pack files and use that list of
+                    // files instead
+                    $it = new DirectoryIterator($git_folder . '/objects/pack');
+                    foreach ($it as $file_info) {
+                        $file_name = $file_info->getFilename();
+                        // if this is a .pack file
+                        if ($file_info->isFile()
+                            && substr($file_name, -5) == '.pack'
+                        ) {
+                            $pack_names[] = $file_name;
+                        }
+                    }
+                }
+                $hash = strtolower($hash);
+                foreach ($pack_names as $pack_name) {
+                    $index_name = str_replace('.pack', '.idx', $pack_name);
+
+                    // load index
+                    if (! $index_data = @file_get_contents($git_folder . '/objects/pack/' . $index_name)) {
+                        continue;
+                    }
+                    // check format
+                    if (substr($index_data, 0, 4) != "\377tOc") {
+                        continue;
+                    }
+                    // check version
+                    $version = unpack('N', substr($index_data, 4, 4));
+                    if ($version[1] != 2) {
+                        continue;
+                    }
+                    // parse fanout table
+                    $fanout = unpack("N*", substr($index_data, 8, 256 * 4));
+
+                    // find where we should search
+                    $firstbyte = intval(substr($hash, 0, 2), 16);
+                    // array is indexed from 1 and we need to get
+                    // previous entry for start
+                    if ($firstbyte == 0) {
+                        $start = 0;
+                    } else {
+                        $start = $fanout[$firstbyte];
+                    }
+                    $end = $fanout[$firstbyte + 1];
+
+                    // stupid linear search for our sha
+                    $position = $start;
+                    $found = false;
+                    $offset = 8 + (256 * 4);
+                    for ($position = $start; $position < $end; $position++) {
+                        $sha = strtolower(
+                            bin2hex(
+                                substr(
+                                    $index_data, $offset + ($position * 20), 20
+                                )
+                            )
+                        );
+                        if ($sha == $hash) {
+                            $found = true;
+                            break;
+                        }
+                    }
+                    if (! $found) {
+                        continue;
+                    }
+                    // read pack offset
+                    $offset = 8 + (256 * 4) + (24 * $fanout[256]);
+                    $pack_offset = unpack(
+                        'N', substr($index_data, $offset + ($position * 4), 4)
+                    );
+                    $pack_offset = $pack_offset[1];
+
+                    // open pack file
+                    $pack_file = fopen(
+                        $git_folder . '/objects/pack/' . $pack_name, 'rb'
+                    );
+                    if ($pack_file === false) {
+                        continue;
+                    }
+                    // seek to start
+                    fseek($pack_file, $pack_offset);
+
+                    // parse header
+                    $header = ord(fread($pack_file, 1));
+                    $type = ($header >> 4) & 7;
+                    $hasnext = ($header & 128) >> 7;
+                    $size = $header & 0xf;
+                    $offset = 4;
+
+                    while ($hasnext) {
+                        $byte = ord(fread($pack_file, 1));
+                        $size |= ($byte & 0x7f) << $offset;
+                        $hasnext = ($byte & 128) >> 7;
+                        $offset += 7;
+                    }
+
+                    // we care only about commit objects
+                    if ($type != 1) {
+                        continue;
+                    }
+
+                    // read data
+                    $commit = fread($pack_file, $size);
+                    $commit = gzuncompress($commit);
+                    $commit = explode("\n", $commit);
+                    $_SESSION['PMA_VERSION_COMMITDATA_' . $hash] = $commit;
+                    fclose($pack_file);
+                }
+            }
+        } else {
+            $commit = $_SESSION['PMA_VERSION_COMMITDATA_' . $hash];
+        }
+
+        // check if commit exists in Github
+        $is_remote_commit = false;
+        if ($commit !== false
+            && isset($_SESSION['PMA_VERSION_REMOTECOMMIT_' . $hash])
+        ) {
+            $is_remote_commit = $_SESSION['PMA_VERSION_REMOTECOMMIT_' . $hash];
+        } else {
+            $link = 'https://api.github.com/repos/phpmyadmin/phpmyadmin/git/commits/'
+                . $hash;
+            $is_found = $this->checkHTTP($link, !$commit);
+            switch($is_found) {
+            case false:
+                $is_remote_commit = false;
+                $_SESSION['PMA_VERSION_REMOTECOMMIT_' . $hash] = false;
+                break;
+            case null:
+                // no remote link for now, but don't cache this as Github is down
+                $is_remote_commit = false;
+                break;
+            default:
+                $is_remote_commit = true;
+                $_SESSION['PMA_VERSION_REMOTECOMMIT_' . $hash] = true;
+                if ($commit === false) {
+                    // if no local commit data, try loading from Github
+                    $commit_json = json_decode($is_found);
+                }
+                break;
+            }
+        }
+
+        $is_remote_branch = false;
+        if ($is_remote_commit && $branch !== false) {
+            // check if branch exists in Github
+            if (isset($_SESSION['PMA_VERSION_REMOTEBRANCH_' . $hash])) {
+                $is_remote_branch = $_SESSION['PMA_VERSION_REMOTEBRANCH_' . $hash];
+            } else {
+                $link = 'https://api.github.com/repos/phpmyadmin/phpmyadmin'
+                    . '/git/trees/' . $branch;
+                $is_found = $this->checkHTTP($link);
+                switch($is_found) {
+                case true:
+                    $is_remote_branch = true;
+                    $_SESSION['PMA_VERSION_REMOTEBRANCH_' . $hash] = true;
+                    break;
+                case false:
+                    $is_remote_branch = false;
+                    $_SESSION['PMA_VERSION_REMOTEBRANCH_' . $hash] = false;
+                    break;
+                case null:
+                    // no remote link for now, but don't cache this as Github is down
+                    $is_remote_branch = false;
+                    break;
+                }
+            }
+        }
+
+        if ($commit !== false) {
+            $author = array('name' => '', 'email' => '', 'date' => '');
+            $committer = array('name' => '', 'email' => '', 'date' => '');
+
+            do {
+                $dataline = array_shift($commit);
+                $datalinearr = explode(' ', $dataline, 2);
+                $linetype = $datalinearr[0];
+                if (in_array($linetype, array('author', 'committer'))) {
+                    $user = $datalinearr[1];
+                    preg_match('/([^<]+)<([^>]+)> ([0-9]+)( [^ ]+)?/', $user, $user);
+                    $user2 = array(
+                        'name' => trim($user[1]),
+                        'email' => trim($user[2]),
+                        'date' => date('Y-m-d H:i:s', $user[3]));
+                    if (isset($user[4])) {
+                        $user2['date'] .= $user[4];
+                    }
+                    $$linetype = $user2;
+                }
+            } while ($dataline != '');
+            $message = trim(implode(' ', $commit));
+
+        } elseif (isset($commit_json)) {
+            $author = array(
+                'name' => $commit_json->author->name,
+                'email' => $commit_json->author->email,
+                'date' => $commit_json->author->date);
+            $committer = array(
+                'name' => $commit_json->committer->name,
+                'email' => $commit_json->committer->email,
+                'date' => $commit_json->committer->date);
+            $message = trim($commit_json->message);
+        } else {
+            return;
+        }
+
+        $this->set('PMA_VERSION_GIT', 1);
+        $this->set('PMA_VERSION_GIT_COMMITHASH', $hash);
+        $this->set('PMA_VERSION_GIT_BRANCH', $branch);
+        $this->set('PMA_VERSION_GIT_MESSAGE', $message);
+        $this->set('PMA_VERSION_GIT_AUTHOR', $author);
+        $this->set('PMA_VERSION_GIT_COMMITTER', $committer);
+        $this->set('PMA_VERSION_GIT_ISREMOTECOMMIT', $is_remote_commit);
+        $this->set('PMA_VERSION_GIT_ISREMOTEBRANCH', $is_remote_branch);
+    }
+
+    /**
+     * Checks if given URL is 200 or 404, optionally returns data
+     *
+     * @param mixed   $link     curl link
+     * @param boolean $get_body whether to retrieve body of document
+     *
+     * @return test result or data
+     */
+    function checkHTTP($link, $get_body = false)
+    {
+        if (! function_exists('curl_init')) {
+            return null;
+        }
+        $ch = curl_init($link);
+        curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 0);
+        curl_setopt($ch, CURLOPT_HEADER, 1);
+        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
+        curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
+        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
+        curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 5);
+        curl_setopt($ch, CURLOPT_USERAGENT, 'phpMyAdmin/' . PMA_VERSION);
+        curl_setopt($ch, CURLOPT_TIMEOUT, 5);
+        $data = @curl_exec($ch);
+        if ($data === false) {
+            return null;
+        }
+        $ok = 'HTTP/1.1 200 OK';
+        $notfound = 'HTTP/1.1 404 Not Found';
+        if (substr($data, 0, strlen($ok)) === $ok) {
+            return $get_body ? substr($data, strpos($data, "\r\n\r\n") + 4) : true;
+        } elseif (substr($data, 0, strlen($notfound)) === $notfound) {
+            return false;
+        }
+        return null;
+    }
+
+    /**
+     * loads default values from default source
+     *
+     * @return boolean     success
+     */
+    function loadDefaults()
+    {
+        $cfg = array();
+        if (! file_exists($this->default_source)) {
+            $this->error_config_default_file = true;
+            return false;
+        }
+        include $this->default_source;
+
+        $this->default_source_mtime = filemtime($this->default_source);
+
+        $this->default_server = $cfg['Servers'][1];
+        unset($cfg['Servers']);
+
+        $this->default = $cfg;
+        $this->settings = PMA_arrayMergeRecursive($this->settings, $cfg);
+
+        $this->error_config_default_file = false;
+
+        return true;
+    }
+
+    /**
+     * loads configuration from $source, usally the config file
+     * should be called on object creation
+     *
+     * @param string $source config file
+     *
+     * @return bool
+     */
+    function load($source = null)
+    {
+        $this->loadDefaults();
+
+        if (null !== $source) {
+            $this->setSource($source);
+        }
+
+        if (! $this->checkConfigSource()) {
+            return false;
+        }
+
+        $cfg = array();
+
+        /**
+         * Parses the configuration file, the eval is used here to avoid
+         * problems with trailing whitespace, what is often a problem.
+         */
+        $old_error_reporting = error_reporting(0);
+        $eval_result = eval('?' . '>' . trim(file_get_contents($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']
+                )
+            );
+        }
+
+        $this->settings = PMA_arrayMergeRecursive($this->settings, $cfg);
+        $this->checkPmaAbsoluteUri();
+        $this->checkFontsize();
+
+        // 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 index.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;
+    }
+
+    /**
+     * Loads user preferences and merges them with current config
+     * must be called after control connection has been estabilished
+     *
+     * @return boolean
+     */
+    function loadUserPreferences()
+    {
+        // index.php should load these settings, so that phpmyadmin.css.php
+        // will have everything avaiable in session cache
+        $server = isset($GLOBALS['server'])
+            ? $GLOBALS['server']
+            : (!empty($GLOBALS['cfg']['ServerDefault'])
+                ? $GLOBALS['cfg']['ServerDefault']
+                : 0);
+        $cache_key = 'server_' . $server;
+        if ($server > 0 && !defined('PMA_MINIMUM_COMMON')) {
+            $config_mtime = max($this->default_source_mtime, $this->source_mtime);
+            // cache user preferences, use database only when needed
+            if (! isset($_SESSION['cache'][$cache_key]['userprefs'])
+                || $_SESSION['cache'][$cache_key]['config_mtime'] < $config_mtime
+            ) {
+                // load required libraries
+                include_once './libraries/user_preferences.lib.php';
+                $prefs = PMA_loadUserprefs();
+                $_SESSION['cache'][$cache_key]['userprefs']
+                    = PMA_applyUserprefs($prefs['config_data']);
+                $_SESSION['cache'][$cache_key]['userprefs_mtime'] = $prefs['mtime'];
+                $_SESSION['cache'][$cache_key]['userprefs_type'] = $prefs['type'];
+                $_SESSION['cache'][$cache_key]['config_mtime'] = $config_mtime;
+            }
+        } elseif ($server == 0
+            || ! isset($_SESSION['cache'][$cache_key]['userprefs'])
+        ) {
+            $this->set('user_preferences', false);
+            return;
+        }
+        $config_data = $_SESSION['cache'][$cache_key]['userprefs'];
+        // type is 'db' or 'session'
+        $this->set(
+            'user_preferences',
+            $_SESSION['cache'][$cache_key]['userprefs_type']
+        );
+        $this->set(
+            'user_preferences_mtime',
+            $_SESSION['cache'][$cache_key]['userprefs_mtime']
+        );
+
+        // backup some settings
+        $org_fontsize = '';
+        if (isset($this->settings['fontsize'])) {
+            $org_fontsize = $this->settings['fontsize'];
+        }
+        // load config array
+        $this->settings = PMA_arrayMergeRecursive($this->settings, $config_data);
+        $GLOBALS['cfg'] = PMA_arrayMergeRecursive($GLOBALS['cfg'], $config_data);
+        if (defined('PMA_MINIMUM_COMMON')) {
+            return;
+        }
+
+        // settings below start really working on next page load, but
+        // changes are made only in index.php so everything is set when
+        // in frames
+
+        // save theme
+        $tmanager = $_SESSION['PMA_Theme_Manager'];
+        if ($tmanager->getThemeCookie() || isset($_REQUEST['set_theme'])) {
+            if ((! isset($config_data['ThemeDefault'])
+                && $tmanager->theme->getId() != 'original')
+                || isset($config_data['ThemeDefault'])
+                && $config_data['ThemeDefault'] != $tmanager->theme->getId()
+            ) {
+                // new theme was set in common.inc.php
+                $this->setUserValue(
+                    null,
+                    'ThemeDefault',
+                    $tmanager->theme->getId(),
+                    'original'
+                );
+            }
+        } else {
+            // no cookie - read default from settings
+            if ($this->settings['ThemeDefault'] != $tmanager->theme->getId()
+                && $tmanager->checkTheme($this->settings['ThemeDefault'])
+            ) {
+                $tmanager->setActiveTheme($this->settings['ThemeDefault']);
+                $tmanager->setThemeCookie();
+            }
+        }
+
+        // save font size
+        if ((! isset($config_data['fontsize'])
+            && $org_fontsize != '82%')
+            || isset($config_data['fontsize'])
+            && $org_fontsize != $config_data['fontsize']
+        ) {
+            $this->setUserValue(null, 'fontsize', $org_fontsize, '82%');
+        }
+
+        // save language
+        if (isset($_COOKIE['pma_lang']) || isset($_POST['lang'])) {
+            if ((! isset($config_data['lang'])
+                && $GLOBALS['lang'] != 'en')
+                || isset($config_data['lang'])
+                && $GLOBALS['lang'] != $config_data['lang']
+            ) {
+                $this->setUserValue(null, 'lang', $GLOBALS['lang'], 'en');
+            }
+        } else {
+            // read language from settings
+            if (isset($config_data['lang']) && PMA_langSet($config_data['lang'])) {
+                $this->setCookie('pma_lang', $GLOBALS['lang']);
+            }
+        }
+
+        // save connection collation
+        if (isset($_COOKIE['pma_collation_connection'])
+            || isset($_POST['collation_connection'])
+        ) {
+            if ((! isset($config_data['collation_connection'])
+                && $GLOBALS['collation_connection'] != 'utf8_general_ci')
+                || isset($config_data['collation_connection'])
+                && $GLOBALS['collation_connection'] != $config_data['collation_connection']
+            ) {
+                $this->setUserValue(
+                    null,
+                    'collation_connection',
+                    $GLOBALS['collation_connection'],
+                    'utf8_general_ci'
+                );
+            }
+        } else {
+            // read collation from settings
+            if (isset($config_data['collation_connection'])) {
+                $GLOBALS['collation_connection']
+                    = $config_data['collation_connection'];
+                $this->setCookie(
+                    'pma_collation_connection',
+                    $GLOBALS['collation_connection']
+                );
+            }
+        }
+    }
+
+    /**
+     * Sets config value which is stored in user preferences (if available)
+     * or in a cookie.
+     *
+     * If user preferences are not yet initialized, option is applied to
+     * global config and added to a update queue, which is processed
+     * by {@link loadUserPreferences()}
+     *
+     * @param string $cookie_name   can be null
+     * @param string $cfg_path      configuration path
+     * @param mixed  $new_cfg_value new value
+     * @param mixed  $default_value default value
+     *
+     * @return void
+     */
+    function setUserValue($cookie_name, $cfg_path, $new_cfg_value,
+        $default_value = null
+    ) {
+        // use permanent user preferences if possible
+        $prefs_type = $this->get('user_preferences');
+        if ($prefs_type) {
+            include_once './libraries/user_preferences.lib.php';
+            if ($default_value === null) {
+                $default_value = PMA_arrayRead($cfg_path, $this->default);
+            }
+            PMA_persistOption($cfg_path, $new_cfg_value, $default_value);
+        }
+        if ($prefs_type != 'db' && $cookie_name) {
+            // fall back to cookies
+            if ($default_value === null) {
+                $default_value = PMA_arrayRead($cfg_path, $this->settings);
+            }
+            $this->setCookie($cookie_name, $new_cfg_value, $default_value);
+        }
+        PMA_arrayWrite($cfg_path, $GLOBALS['cfg'], $new_cfg_value);
+        PMA_arrayWrite($cfg_path, $this->settings, $new_cfg_value);
+    }
+
+    /**
+     * Reads value stored by {@link setUserValue()}
+     *
+     * @param string $cookie_name cookie name
+     * @param mixed  $cfg_value   config value
+     *
+     * @return mixed
+     */
+    function getUserValue($cookie_name, $cfg_value)
+    {
+        $cookie_exists = isset($_COOKIE) && !empty($_COOKIE[$cookie_name]);
+        $prefs_type = $this->get('user_preferences');
+        if ($prefs_type == 'db') {
+            // permanent user preferences value exists, remove cookie
+            if ($cookie_exists) {
+                $this->removeCookie($cookie_name);
+            }
+        } else if ($cookie_exists) {
+            return $_COOKIE[$cookie_name];
+        }
+        // return value from $cfg array
+        return $cfg_value;
+    }
+
+    /**
+     * set source
+     *
+     * @param string $source source
+     *
+     * @return void
+     */
+    function setSource($source)
+    {
+        $this->source = trim($source);
+    }
+
+    /**
+     * 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())) {
+            $this->source_mtime = 0;
+            return false;
+        }
+
+        if (! is_readable($this->getSource())) {
+            // manually check if file is readable
+            // might be bug #3059806 Supporting running from CIFS/Samba shares
+
+            $contents = false;
+            $handle = @fopen($this->getSource(), 'r');
+            if ($handle !== false) {
+                $contents = @fread($handle, 1); // reading 1 byte is enough to test
+                @fclose($handle);
+            }
+            if ($contents === false) {
+                $this->source_mtime = 0;
+                PMA_fatalError(
+                    sprintf(
+                        function_exists('__')
+                        ? __('Existing configuration file (%s) is not readable.')
+                        : 'Existing configuration file (%s) is not readable.',
+                        $this->getSource()
+                    )
+                );
+                return false;
+            }
+        }
+
+        return true;
+    }
+
+    /**
+     * verifies the permissions on config file (if asked by configuration)
+     * (must be called after config.inc.php has been merged)
+     *
+     * @return void
+     */
+    function checkPermissions()
+    {
+        // Check for permissions (on platforms that support it):
+        if ($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;
+                    /* Gettext is possibly still not loaded */
+                    if (function_exists('__')) {
+                        $msg = __('Wrong permissions on configuration file, should not be world writable!');
+                    } else {
+                        $msg = 'Wrong permissions on configuration file, should not be world writable!';
+                    }
+                    PMA_fatalError($msg);
+                }
+            }
+        }
+    }
+
+    /**
+     * returns specific config setting
+     *
+     * @param string $setting config setting
+     *
+     * @return mixed value
+     */
+    function get($setting)
+    {
+        if (isset($this->settings[$setting])) {
+            return $this->settings[$setting];
+        }
+        return null;
+    }
+
+    /**
+     * sets configuration variable
+     *
+     * @param string $setting configuration option
+     * @param string $value   new value for configuration option
+     *
+     * @return void
+     */
+    function set($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 Summary of unix timestamps and fontsize,
+     * to be unique on theme parameters change
+     */
+    function getThemeUniqueValue()
+    {
+        if (null !== $this->get('fontsize')) {
+            $fontsize = intval($this->get('fontsize'));
+        } elseif (isset($_COOKIE['pma_fontsize'])) {
+            $fontsize = intval($_COOKIE['pma_fontsize']);
+        } else {
+            $fontsize = 0;
+        }
+        return (
+            $fontsize +
+            $this->source_mtime +
+            $this->default_source_mtime +
+            $this->get('user_preferences_mtime') +
+            $_SESSION['PMA_Theme']->mtime_info +
+            $_SESSION['PMA_Theme']->filesize_info);
+    }
+
+    /**
+     * $cfg['PmaAbsoluteUri'] is a required directive else cookies won't be
+     * set properly and, depending on browsers, inserting or updating a
+     * record might fail
+     *
+     * @return bool
+     */
+    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 = $this->detectHttps();
+
+        if (strlen($pma_absolute_uri) < 5) {
+            $url = array();
+
+            // If we don't have scheme, we didn't have full URL so we need to
+            // dig deeper
+            if (empty($url['scheme'])) {
+                // Scheme
+                if ($is_https) {
+                    $url['scheme'] = 'https';
+                } else {
+                    $url['scheme'] = 'http';
+                }
+
+                // Host and port
+                if (PMA_getenv('HTTP_HOST')) {
+                    // Prepend the scheme before using parse_url() since this
+                    // is not part of the RFC2616 Host request-header
+                    $parsed_url = parse_url(
+                        $url['scheme'] . '://' . PMA_getenv('HTTP_HOST')
+                    );
+                    if (!empty($parsed_url['host'])) {
+                        $url = $parsed_url;
+                    } 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'])) {
+                    // we got a case with nginx + php-fpm where PHP_SELF
+                    // was not set, so PMA_PHP_SELF was not set as well 
+                    if (isset($GLOBALS['PMA_PHP_SELF'])) {
+                        $path = parse_url($GLOBALS['PMA_PHP_SELF']);
+                    } else {
+                        $path = parse_url(PMA_getenv('REQUEST_URI'));
+                    }
+                    $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.
+            $this->checkWebServerOs();
+            if ($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));
+                }
+            }
+
+            // PHP's dirname function would have returned a dot
+            // when $path contains no slash
+            if ($path == '.') {
+                $path = '';
+            }
+            // in vhost situations, there could be already an ending slash
+            if (substr($path, -1) != '/') {
+                $path .= '/';
+            }
+            $pma_absolute_uri .= $path;
+
+            // We used to display a warning if PmaAbsoluteUri wasn't set, but now
+            // the autodetect code works well enough that we don't display the
+            // warning at all. The user can still set PmaAbsoluteUri manually.
+
+        } else {
+            // The URI is specified, however users do often specify this
+            // wrongly, so we try to fix this.
+
+            // Adds a trailing slash et the end of the phpMyAdmin uri if it
+            // does not exist.
+            if (substr($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://'
+            ) {
+                $pma_absolute_uri
+                    = ($is_https ? 'https' : 'http')
+                    . ':' . (substr($pma_absolute_uri, 0, 2) == '//' ? '' : '//')
+                    . $pma_absolute_uri;
+            }
+        }
+        $this->set('PmaAbsoluteUri', $pma_absolute_uri);
+    }
+
+    /**
+     * Converts currently used PmaAbsoluteUri to SSL based variant.
+     *
+     * @return String witch adjusted URI
+     */
+    function getSSLUri()
+    {
+        // grab current URL
+        $url = $this->get('PmaAbsoluteUri');
+        // Parse current URL
+        $parsed = parse_url($url);
+        // In case parsing has failed do stupid string replacement
+        if ($parsed === false) {
+            // Replace http protocol
+            return preg_replace('@^http:@', 'https:', $url);
+        }
+
+        // Reconstruct URL using parsed parts
+        if ($this->get('SSLPort')) {
+            $port_number = $this->get('SSLPort');
+        } else {
+            $port_number = 443;
+        }
+        return 'https://' . $parsed['host'] . ':' . $port_number . $parsed['path'];
+    }
+
+    /**
+     * check selected collation_connection
+     *
+     * @todo check validity of $_REQUEST['collation_connection']
+     *
+     * @return void
+     */
+    function checkCollationConnection()
+    {
+        if (! empty($_REQUEST['collation_connection'])) {
+            $this->set(
+                'collation_connection',
+                strip_tags($_REQUEST['collation_connection'])
+            );
+        }
+    }
+
+    /**
+     * checks for font size configuration, and sets font size as requested by user
+     *
+     * @return void
+     */
+    function checkFontsize()
+    {
+        $new_fontsize = '';
+
+        if (isset($_GET['set_fontsize'])) {
+            $new_fontsize = $_GET['set_fontsize'];
+        } elseif (isset($_POST['set_fontsize'])) {
+            $new_fontsize = $_POST['set_fontsize'];
+        } elseif (isset($_COOKIE['pma_fontsize'])) {
+            $new_fontsize = $_COOKIE['pma_fontsize'];
+        }
+
+        if (preg_match('/^[0-9.]+(px|em|pt|\%)$/', $new_fontsize)) {
+            $this->set('fontsize', $new_fontsize);
+        } elseif (! $this->get('fontsize')) {
+            // 80% would correspond to the default browser font size
+            // of 16, but use 82% to help read the monoface font
+            $this->set('fontsize', '82%');
+        }
+
+        $this->setCookie('pma_fontsize', $this->get('fontsize'), '82%');
+    }
+
+    /**
+     * checks if upload is enabled
+     *
+     * @return void
+     */
+    function checkUpload()
+    {
+        if (ini_get('file_uploads')) {
+            $this->set('enable_upload', true);
+            // if set "php_admin_value file_uploads Off" in httpd.conf
+            // ini_get() also returns the string "Off" in this case:
+            if ('off' == strtolower(ini_get('file_uploads'))) {
+                $this->set('enable_upload', false);
+            }
+        } else {
+            $this->set('enable_upload', false);
+        }
+    }
+
+    /**
+     * Maximum upload size as limited by PHP
+     * Used with permission from Moodle (http://moodle.org) by Martin Dougiamas
+     *
+     * this section generates $max_upload_size in bytes
+     *
+     * @return void
+     */
+    function checkUploadSize()
+    {
+        if (! $filesize = ini_get('upload_max_filesize')) {
+            $filesize = "5M";
+        }
+
+        if ($postsize = ini_get('post_max_size')) {
+            $this->set(
+                'max_upload_size',
+                min(PMA_getRealSize($filesize), PMA_getRealSize($postsize))
+            );
+        } else {
+            $this->set('max_upload_size', PMA_getRealSize($filesize));
+        }
+    }
+
+    /**
+     * check for https
+     *
+     * @return void
+     */
+    function checkIsHttps()
+    {
+        $this->set('is_https', $this->isHttps());
+    }
+
+    /**
+     * Checks if protocol is https
+     *
+     * This function checks if the https protocol is used in the PmaAbsoluteUri
+     * configuration setting, as opposed to detectHttps() which checks if the
+     * https protocol is used on the active connection.
+     *
+     * @return bool
+     */
+    public function isHttps()
+    {
+        static $is_https = null;
+
+        if (null !== $is_https) {
+            return $is_https;
+        }
+
+        $url = parse_url($this->get('PmaAbsoluteUri'));
+
+        if (isset($url['scheme']) && $url['scheme'] == 'https') {
+            $is_https = true;
+        } else {
+            $is_https = false;
+        }
+
+        return $is_https;
+    }
+
+    /**
+     * Detects whether https appears to be used.
+     *
+     * This function checks if the https protocol is used in the current connection
+     * with the webserver, based on environment variables.
+     * Please note that this just detects what we see, so
+     * it completely ignores things like reverse proxies.
+     *
+     * @return bool
+     */
+    function detectHttps()
+    {
+        $is_https = false;
+
+        $url = array();
+
+        // At first we try to parse REQUEST_URI, it might contain full URL,
+        if (PMA_getenv('REQUEST_URI')) {
+            // produces E_WARNING if it cannot get parsed, e.g. '/foobar:/'
+            $url = @parse_url(PMA_getenv('REQUEST_URI'));
+            if ($url === false) {
+                $url = array();
+            }
+        }
+
+        // If we don't have scheme, we didn't have full URL so we need to
+        // dig deeper
+        if (empty($url['scheme'])) {
+            // Scheme
+            if (PMA_getenv('HTTP_SCHEME')) {
+                $url['scheme'] = PMA_getenv('HTTP_SCHEME');
+            } elseif (PMA_getenv('HTTPS')
+                && strtolower(PMA_getenv('HTTPS')) == 'on'
+            ) {
+                $url['scheme'] = 'https';
+            } elseif (PMA_getenv('HTTP_X_FORWARDED_PROTO')) {
+                $url['scheme'] = strtolower(PMA_getenv('HTTP_X_FORWARDED_PROTO'));
+            } elseif (PMA_getenv('HTTP_FRONT_END_HTTPS')
+                && strtolower(PMA_getenv('HTTP_FRONT_END_HTTPS')) == 'on'
+            ) {
+                $url['scheme'] = 'https';
+            } else {
+                $url['scheme'] = 'http';
+            }
+        }
+
+        if (isset($url['scheme']) && $url['scheme'] == 'https') {
+            $is_https = true;
+        } else {
+            $is_https = false;
+        }
+
+        return $is_https;
+    }
+
+    /**
+     * detect correct cookie path
+     *
+     * @return void
+     */
+    function checkCookiePath()
+    {
+        $this->set('cookie_path', $this->getCookiePath());
+    }
+
+    /**
+     * Get cookie path
+     *
+     * @return string
+     */
+    public function getCookiePath()
+    {
+        static $cookie_path = null;
+
+        if (null !== $cookie_path && !defined('TESTSUITE')) {
+            return $cookie_path;
+        }
+
+        $parsed_url = parse_url($this->get('PmaAbsoluteUri'));
+
+        $cookie_path   = $parsed_url['path'];
+
+        return $cookie_path;
+    }
+
+    /**
+     * enables backward compatibility
+     *
+     * @return void
+     */
+    function enableBc()
+    {
+        $GLOBALS['cfg']             = $this->settings;
+        $GLOBALS['default_server']  = $this->default_server;
+        unset($this->default_server);
+        $GLOBALS['collation_connection'] = $this->get('collation_connection');
+        $GLOBALS['is_upload']       = $this->get('enable_upload');
+        $GLOBALS['max_upload_size'] = $this->get('max_upload_size');
+        $GLOBALS['cookie_path']     = $this->get('cookie_path');
+        $GLOBALS['is_https']        = $this->get('is_https');
+
+        $defines = array(
+            'PMA_VERSION',
+            'PMA_THEME_VERSION',
+            'PMA_THEME_GENERATION',
+            'PMA_PHP_STR_VERSION',
+            'PMA_PHP_INT_VERSION',
+            'PMA_IS_WINDOWS',
+            'PMA_IS_IIS',
+            'PMA_IS_GD2',
+            'PMA_USR_OS',
+            'PMA_USR_BROWSER_VER',
+            'PMA_USR_BROWSER_AGENT'
+            );
+
+        foreach ($defines as $define) {
+            if (! defined($define)) {
+                define($define, $this->get($define));
+            }
+        }
+    }
+
+    /**
+     * returns options for font size selection
+     *
+     * @param string $current_size current selected font size with unit
+     *
+     * @return array selectable font sizes
+     *
+     * @static
+     */
+    static protected function getFontsizeOptions($current_size = '82%')
+    {
+        $unit = preg_replace('/[0-9.]*/', '', $current_size);
+        $value = preg_replace('/[^0-9.]*/', '', $current_size);
+
+        $factors = array();
+        $options = array();
+        $options["$value"] = $value . $unit;
+
+        if ($unit === '%') {
+            $factors[] = 1;
+            $factors[] = 5;
+            $factors[] = 10;
+        } elseif ($unit === 'em') {
+            $factors[] = 0.05;
+            $factors[] = 0.2;
+            $factors[] = 1;
+        } elseif ($unit === 'pt') {
+            $factors[] = 0.5;
+            $factors[] = 2;
+        } elseif ($unit === 'px') {
+            $factors[] = 1;
+            $factors[] = 5;
+            $factors[] = 10;
+        } else {
+            //unknown font size unit
+            $factors[] = 0.05;
+            $factors[] = 0.2;
+            $factors[] = 1;
+            $factors[] = 5;
+            $factors[] = 10;
+        }
+
+        foreach ($factors as $key => $factor) {
+            $option_inc = $value + $factor;
+            $option_dec = $value - $factor;
+            while (count($options) < 21) {
+                $options["$option_inc"] = $option_inc . $unit;
+                if ($option_dec > $factors[0]) {
+                    $options["$option_dec"] = $option_dec . $unit;
+                }
+                $option_inc += $factor;
+                $option_dec -= $factor;
+                if (isset($factors[$key + 1])
+                    && $option_inc >= $value + $factors[$key + 1]
+                ) {
+                    break;
+                }
+            }
+        }
+        ksort($options);
+        return $options;
+    }
+
+    /**
+     * returns html selectbox for font sizes
+     *
+     * @static
+     *
+     * @return string html selectbox
+     */
+    static protected function getFontsizeSelection()
+    {
+        $current_size = $GLOBALS['PMA_Config']->get('fontsize');
+        // for the case when there is no config file (this is supported)
+        if (empty($current_size)) {
+            if (isset($_COOKIE['pma_fontsize'])) {
+                $current_size = $_COOKIE['pma_fontsize'];
+            } else {
+                $current_size = '82%';
+            }
+        }
+        $options = PMA_Config::getFontsizeOptions($current_size);
+
+        $return = '<label for="select_fontsize">' . __('Font size')
+            . ':</label>' . "\n"
+            . '<select name="set_fontsize" id="select_fontsize"'
+            . ' class="autosubmit">' . "\n";
+        foreach ($options as $option) {
+            $return .= '<option value="' . $option . '"';
+            if ($option == $current_size) {
+                $return .= ' selected="selected"';
+            }
+            $return .= '>' . $option . '</option>' . "\n";
+        }
+        $return .= '</select>';
+
+        return $return;
+    }
+
+    /**
+     * return complete font size selection form
+     *
+     * @static
+     *
+     * @return string html selectbox
+     */
+    static public function getFontsizeForm()
+    {
+        return '<form name="form_fontsize_selection" id="form_fontsize_selection"'
+            . ' method="get" action="index.php" class="disableAjax">' . "\n"
+            . PMA_generate_common_hidden_inputs() . "\n"
+            . PMA_Config::getFontsizeSelection() . "\n"
+            . '</form>';
+    }
+
+    /**
+     * removes cookie
+     *
+     * @param string $cookie name of cookie to remove
+     *
+     * @return boolean result of setcookie()
+     */
+    function removeCookie($cookie)
+    {
+        if (defined('TESTSUITE')) {
+            if (isset($_COOKIE[$cookie])) {
+                unset($_COOKIE[$cookie]);
+            }
+            return true;
+        }
+        return setcookie(
+            $cookie,
+            '',
+            time() - 3600,
+            $this->getCookiePath(),
+            '',
+            $this->isHttps()
+        );
+    }
+
+    /**
+     * sets cookie if value is different from current cookie value,
+     * or removes if value is equal to default
+     *
+     * @param string $cookie   name of cookie to remove
+     * @param mixed  $value    new cookie value
+     * @param string $default  default value
+     * @param int    $validity validity of cookie in seconds (default is one month)
+     * @param bool   $httponly whether cookie is only for HTTP (and not for scripts)
+     *
+     * @return boolean result of setcookie()
+     */
+    function setCookie($cookie, $value, $default = null, $validity = null,
+        $httponly = true
+    ) {
+        if (strlen($value) && null !== $default && $value === $default) {
+            // default value is used
+            if (isset($_COOKIE[$cookie])) {
+                // remove cookie
+                return $this->removeCookie($cookie);
+            }
+            return false;
+        }
+
+        if (! strlen($value) && isset($_COOKIE[$cookie])) {
+            // remove cookie, value is empty
+            return $this->removeCookie($cookie);
+        }
+
+        if (! isset($_COOKIE[$cookie]) || $_COOKIE[$cookie] !== $value) {
+            // set cookie with new value
+            /* Calculate cookie validity */
+            if ($validity === null) {
+                $validity = time() + 2592000;
+            } elseif ($validity == 0) {
+                $validity = 0;
+            } else {
+                $validity = time() + $validity;
+            }
+            if (defined('TESTSUITE')) {
+                $_COOKIE[$cookie] = $value;
+                return true;
+            }
+            return setcookie(
+                $cookie,
+                $value,
+                $validity,
+                $this->getCookiePath(),
+                '',
+                $this->isHttps(),
+                $httponly
+            );
+        }
+
+        // cookie has already $value as value
+        return true;
+    }
+}
+?>