0)) { // True IP behind a proxy return $regs[0]; } else { // Can't define IP: there is a proxy but we don't have // information about the true IP return FALSE; } } // end if... else... } // end of the 'PMA_getIp()' function /** * Based on IP Pattern Matcher * Originally by J.Adams * Found on * Modified by Robbat2 * * Matches: * xxx.xxx.xxx.xxx (exact) * xxx.xxx.xxx.[yyy-zzz] (range) * xxx.xxx.xxx.xxx/nn (CIDR) * * Does not match: * xxx.xxx.xxx.xx[yyy-zzz] (range, partial octets not supported) * * @param string string of IP range to match * @param string string of IP to test against range * * @return boolean always true * * @access public */ function PMA_ipMaskTest($testRange, $ipToTest) { $result = TRUE; if (preg_match('|([0-9]+)\.([0-9]+)\.([0-9]+)\.([0-9]+)/([0-9]+)|', $testRange, $regs = array())) { // performs a mask match $ipl = ip2long($ipToTest); $rangel = ip2long($regs[1] . '.' . $regs[2] . '.' . $regs[3] . '.' . $regs[4]); $maskl = 0; for ($i = 0; $i < 31; $i++) { if ($i < $regs[5] - 1) { $maskl = $maskl + pow(2, (30 - $i)); } // end if } // end for if (($maskl & $rangel) == ($maskl & $ipl)) { return TRUE; } else { return FALSE; } } else { // range based $maskocts = explode('.', $testRange); $ipocts = explode('.', $ipToTest); // perform a range match for ($i = 0; $i < 4; $i++) { if (preg_match('|\[([0-9]+)\-([0-9]+)\]|', $maskocts[$i], $regs)) { if (($ipocts[$i] > $regs[2]) || ($ipocts[$i] < $regs[1])) { $result = FALSE; } // end if } else { if ($maskocts[$i] <> $ipocts[$i]) { $result = FALSE; } // end if } // end if/else } //end for } //end if/else return $result; } // end of the "PMA_IPMaskTest()" function /** * Runs through IP Allow/Deny rules the use of it below for more information * * @param string 'allow' | 'deny' type of rule to match * * @return bool Matched a rule ? * * @access public * * @see PMA_getIp() */ function PMA_allowDeny($type) { global $cfg; // Grabs true IP of the user and returns if it can't be found $remote_ip = PMA_getIp(); if (empty($remote_ip)) { return FALSE; } // copy username $username = $cfg['Server']['user']; // copy rule database $rules = $cfg['Server']['AllowDeny']['rules']; // lookup table for some name shortcuts $shortcuts = array( 'all' => '0.0.0.0/0', 'localhost' => '127.0.0.1/8' ); // Provide some useful shortcuts if server gives us address: if (isset($_SERVER['SERVER_ADDR'])) { $shortcuts['localnetA'] = $_SERVER['SERVER_ADDR'] . '/8'; $shortcuts['localnetB'] = $_SERVER['SERVER_ADDR'] . '/16'; $shortcuts['localnetC'] = $_SERVER['SERVER_ADDR'] . '/24'; } foreach ($rules AS $rule) { // extract rule data $rule_data = explode(' ', $rule); // check for rule type if ($rule_data[0] != $type) { continue; } // check for username if (($rule_data[1] != '%') //wildcarded first && ($rule_data[1] != $username)) { continue; } // check if the config file has the full string with an extra // 'from' in it and if it does, just discard it if ($rule_data[2] == 'from') { $rule_data[2] = $rule_data[3]; } // Handle shortcuts with above array // DON'T use "array_key_exists" as it's only PHP 4.1 and newer. if (isset($shortcuts[$rule_data[2]])) { $rule_data[2] = $shortcuts[$rule_data[2]]; } // Add code for host lookups here // Excluded for the moment // Do the actual matching now if (PMA_ipMaskTest($rule_data[2], $remote_ip)) { return TRUE; } } // end while return FALSE; } // end of the "PMA_AllowDeny()" function ?>