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matthys |
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<?php |
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/* This file is part of BBClone (A PHP based Web Counter on Steroids) |
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* |
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* CVS FILE $Id: marker.php,v 1.65 2011/12/30 23:03:47 joku Exp $ |
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* |
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* Copyright (C) 2001-2012, the BBClone Team (see doc/authors.txt for details) |
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* |
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* This program is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation, either version 3 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* See doc/copying.txt for details |
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*/ |
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//////////// |
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// Marker // |
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//////////// |
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// Main Class Counter |
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class bbc_marker { |
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var $sep, $filename, $ignored, $string; |
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// randomly choose a counter file to write to |
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function bbc_counter_file($cache_path, $counter_pre, $counter_suf) { |
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global $BBC_COUNTER_FILES; |
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mt_srand((double) microtime() * 1000000); |
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return ($cache_path.$counter_pre.mt_rand(0, ($BBC_COUNTER_FILES - 1)).$counter_suf); |
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} |
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function bbc_known_range($addr, $class_a) { |
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// look up whether an address is registerred |
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global $BBC_IP2EXT_PATH; |
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$long = sprintf("%u", ip2long($addr)); |
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$file = $BBC_IP2EXT_PATH.$class_a.".inc"; |
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$is_valid = false; |
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if (!is_readable($file)) return false; |
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$fp = fopen($file, "rb"); |
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while (($range = fgetcsv($fp, 32, "|")) !== false) { |
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if (($long >= $range[1]) && ($long < ($range[1] + $range[2]))) { |
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$is_valid = true; |
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break; |
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} |
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} |
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fclose($fp); |
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return ($is_valid ? true : false); |
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} |
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// validates a hostname or ip address |
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function bbc_valid_ip($addr, $prx = 0) { |
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$iptest = explode(".", $addr); |
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$iptest = defined("_rev") ? array_reverse($iptest) : $iptest; |
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$oct = count($iptest); |
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if ($oct != 4) return false; |
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for ($i = 0; $i < $oct; $i++) { |
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$iptest[$i] = trim($iptest[$i]); |
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if ((!preg_match(":^[0-9]{1,3}$:", $iptest[$i])) || ($iptest[$i] > 255)) return false; |
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} |
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if (($iptest[0] < 1) || ($iptest[0] > 223) || ($iptest[3] < 1) || ($iptest[3] > 254) || |
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(($prx) && ($this->bbc_known_range($addr, $iptest[0]) === false))) return false; |
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return (defined("_rev") ? implode(".", $iptest) : $addr); |
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} |
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// converts a hexadecimal ip address to the dotted format if applicable |
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function bbc_hex2ip($str) { |
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if (!preg_match(":[a-fA-F0-9]{8}:", $str)) return $str; |
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$arr = explode(".", wordwrap($str, 2, ".", 2)); |
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for ($i = 0, $k = count($arr); $i < $k; $i++) $arr[$i] = trim(hexdec($arr[$i])); |
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return ($arr[0].".".$arr[1].".".$arr[2].".".$arr[3]); |
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} |
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// returns the first valid host |
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function bbc_select_host($array) { |
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arsort($array, SORT_NUMERIC); |
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foreach ($array as $key => $val) { |
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$key = $this->bbc_hex2ip(trim($key)); |
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if (($prx = $this->bbc_valid_ip($key, 1)) !== false) return $prx; |
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} |
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return false; |
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} |
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// extract the first valid address from a chain |
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function bbc_unchain_addr($val) { |
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if (strpos($val, ",") === false) return $val; |
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$array = explode(",", $val); |
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for ($i = 0, $max = count($array); $i < $max; $i++) $array[$i] = trim($array[$i]); |
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return $this->bbc_select_host(array_flip($array)); |
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} |
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// return the correct remote address |
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function bbc_get_remote_addr($addr, $reverse) { |
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$addr = $this->bbc_unchain_addr($addr); |
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$reverse = $this->bbc_unchain_addr($reverse); |
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if ((!empty($reverse)) && ($this->bbc_valid_ip($addr, 1) === false)) return $reverse; |
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elseif (empty($addr)) return "127.0.0.1"; |
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else return ((substr($addr, 0, strpos($addr, ".")) == 127) ? "127.0.0.1" : $addr); |
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} |
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// check for client in proxy headers |
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function bbc_parse_headers() { |
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if (_BBC_PHP < 410) global $HTTP_SERVER_VARS; |
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foreach (((_BBC_PHP < 410) ? $HTTP_SERVER_VARS : $_SERVER) as $key => $val) { |
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if (!(substr($key, 0, strpos($key, "_")) == "HTTP")) continue; |
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if ((stristr($val, " for ") !== false)) { |
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$tmp = explode(" for ", strtolower($val)); |
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$tmpval = trim($tmp[count($tmp) - 1]); |
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$tmpval = $this->bbc_unchain_addr($tmpval); |
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$chk[$tmpval] = isset($chk[$tmpval]) ? ++$chk[$tmpval] : 1; |
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} |
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if ((strpos($key, "_CLIENT") !== false) || (substr($key, -4) == "_FOR")) { |
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$val = $this->bbc_unchain_addr($val); |
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$chk[$val] = isset($chk[$val]) ? ++$chk[$val] : 1; |
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} |
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// If we find this, the client's ip address needs to be reversed |
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if (($key == "HTTP_VIA") && (preg_match("|Traffic[ \-]?Server/5\.2\.0|i", $val))) { |
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!defined("_rev") ? define("_rev", 1) : ""; |
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} |
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} |
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return (!empty($chk) ? $this->bbc_select_host($chk) : false); |
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} |
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// Check if an ip address is matching up against the blacklist |
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function bbc_is_ignored($blacklist, $client) { |
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$ipmatch = (empty($blacklist) ? "" : explode(",", $blacklist)); |
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if (empty($ipmatch)) return false; |
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for($i = count($ipmatch) - 1; $i >= 0; $i--) { |
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$test = trim($ipmatch[$i]); |
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if (substr($client, 0, strlen($test)) === $test) return true; |
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} |
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return false; |
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} |
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// checking for matching hosts which we have to ignore. We assume that a |
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// keyword with leading slash implies an uri and everything else a hostname |
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function bbc_ignore_ref($array) { |
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global $BBC_IGNORE_REFER; |
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if (!empty($BBC_IGNORE_REFER)) { |
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foreach(explode(",", $BBC_IGNORE_REFER) as $test) { |
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$test = trim($test); |
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$is_path = ($test[0] == "/") ? true : false; |
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if (stristr(($is_path ? $array[2] : $array[1]), $test) !== false) return true; |
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} |
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} |
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return false; |
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} |
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// checks for a valid url format |
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function bbc_valid_ref($ref) { |
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$tmp = explode(":", $ref); |
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for ($i = 0, $k = count($tmp); $i < $k; $i++) $tmp[$i] = trim($tmp[$i]); |
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return (((($tmp[0] == "http") || ($tmp[0] == "https")) && (substr($tmp[1], 0, 2) == "//")) ? true : false); |
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} |
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//converts a referrer to an array with the hostname, ip address and the full referrer |
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function bbc_parse_ref($ref) { |
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if (!$this->bbc_valid_ref($ref)) return false; |
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// getting rid of stupid user input |
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$ref = str_replace(":/", "://", preg_replace(":/+:", "/", $ref)); |
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$ref = preg_replace(":\.+(/|$):", "\\1", $ref); |
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$ref = substr(strstr($ref, "://"), 3); |
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$uri = (($slash = strpos($ref, "/")) !== false) ? substr($ref, $slash) : "/"; |
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$host_raw = strtolower((($slash !== false) ? substr($ref, 0, $slash) : $ref)); |
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$host = (($port = strpos($host_raw, ":")) !== false) ? substr($host_raw, 0, $port) : $host_raw; |
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return (preg_match("|^[a-zA-Z0-9._\-]{2,64}$|", $host) ? array("http://".$host_raw.$uri, $host, $uri) : false); |
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} |
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// determine and filter stuff which came from the local server |
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function bbc_filter_ref($srvhost, $ref, $srvname, $srvaddr) { |
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$ref_array = $this->bbc_parse_ref($ref); |
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if (is_array($ref_array) && ($this->bbc_ignore_ref($ref_array) !== false)) return "ignored"; |
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if (!$ref_array || ($ref_array[1] == $srvaddr) || ($ref_array[1] == $srvname) || |
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((substr($ref_array[1], 0, 4) == "127.") || (substr($ref_array[1], 0, 2) == "0.")) || |
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((substr($srvname, 0, 4) == "www.") && (substr($srvname, 4) == $ref_array[1])) || |
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((substr($ref_array[1], 0, 4) == "www.") && (substr($ref_array[1], 4) == $srvname)) || |
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(!empty($srvhost) && (($srvhost == $ref_array[1]) || |
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((substr($srvhost, 0, 4) == "www.") && (substr($srvhost, 4) == $ref_array[1])) || |
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((substr($ref_array[1], 0, 4) == "www.") && (substr($ref_array[1], 4) == $srvhost))))) { |
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return "unknown"; |
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} |
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else return $ref_array[0]; |
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} |
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// avoid trails of query strings which aren't relevant for page counting |
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function bbc_filter_uri($script, $pinfo, $uri) { |
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// getting rid of stupid user input |
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foreach (array("pinfo", "uri") as $path) { |
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${$path} = str_replace(":/", "://", preg_replace(":/+:", "/", ${$path})); |
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${$path} = preg_replace(":\.+(/|$):", "\\1", ${$path}); |
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} |
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// On some systems path info is just an alias for the script uri |
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$pinfo = ($uri == $pinfo) ? 0 : $pinfo; |
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$uri = !empty($pinfo) ? substr($uri, 0, (strlen($uri) - strlen($pinfo))) : $uri; |
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$uri = (basename($uri) !== $script) ? (((($dir = dirname($uri)) == ".") || (empty($dir))) ? "/" : $dir."/") |
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.$script : $uri; |
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$test = explode(".", $script); |
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$tmp = strtolower(trim($test[0])); |
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$tmp = ((count($test) == 2) && (($tmp == "index") || ($tmp == "default"))) ? true : false; |
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return (($tmp !== false) ? substr($uri, 0, (strrpos($uri, "/") + 1)) : (empty($uri) ? "/" : $uri)); |
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} |
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// automatic page name generation in case of not being specified |
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function bbc_auto_page_name($uri) { |
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if (!is_string($uri) || empty($uri) || ($uri == "/")) return "index"; |
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$uri = (substr($uri, -1) == "/") ? substr($uri, 1, -1) : ((($dot = strrpos($uri, ".")) !== false) ? |
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substr($uri, 1, --$dot) : substr($uri, 1)); |
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$uri = strtr($uri, array("/" => " -> ", "_" => " ")); |
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return ucwords($uri); |
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} |
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// write the entry |
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function bbc_write_entry() { |
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global $BBC_CACHE_PATH; |
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$file = $this->filename; |
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$base = basename($file); |
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if (!is_readable($file)) return array($base, "r"); |
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if (!is_writable($file)) return array($base, "w"); |
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$fp = defined("_BBC_DIO") ? dio_open($file, O_RDWR | O_APPEND) : fopen($file, "ab+"); |
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if (defined("_BBC_DIO") && (dio_fcntl($fp, F_SETLK, 1) !== -1)) { |
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dio_write($fp, $this->string); |
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dio_fcntl($fp, F_SETLK, 0); |
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$ok = 1; |
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} |
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else { |
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if (defined("_BBC_SEM") ? ($id = bbc_semlock($file)) : flock($fp, LOCK_EX)) { |
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fputs($fp, $this->string); |
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fflush($fp); |
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defined("_BBC_SEM") ? sem_release($id) : flock($fp, LOCK_UN); |
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$ok = 1; |
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} |
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} |
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defined("_BBC_DIO") ? dio_close($fp) : fclose($fp); |
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return (isset($ok) ? array($base, "o") : array($base, "l")); |
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} |
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// constructor |
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function bbc_marker() { |
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if (_BBC_PHP < 410) global $HTTP_SERVER_VARS; |
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global $BBC_CACHE_PATH, $BBC_COUNTER_PREFIX, $BBC_COUNTER_SUFFIX, $BBC_IGNORE_IP, $BBC_SEP, $BBC_TIMESTAMP, |
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$BBC_TIME_OFFSET, $DOCUMENT_ROOT, $HTTP_HOST, $HTTP_X_REMOTECLIENT_IP, $LOCAL_ADDR, $PATH_INFO, |
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$PHP_SELF, $SCRIPT_FILENAME, $SERVER_NAME; |
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$this->sep = $BBC_SEP; |
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$this->ignored = false; |
| 293 |
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$this->filename = $this->bbc_counter_file($BBC_CACHE_PATH, $BBC_COUNTER_PREFIX, $BBC_COUNTER_SUFFIX); |
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$time = $BBC_TIMESTAMP + ($BBC_TIME_OFFSET * 60); |
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| 297 |
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// loads of initialisations |
| 298 |
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$hdr = array("DOCUMENT_ROOT", "HTTP_USER_AGENT", "LOCAL_ADDR", "REMOTE_HOST", "REMOTE_ADDR", "HTTP_HOST", |
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"HTTP_REFERER", "HTTP_X_REMOTECLIENT_IP", "ORIG_PATH_INFO", "ORIG_PATH_TRANSLATED", |
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"ORIG_SCRIPT_FILENAME", "PATH_INFO", "PATH_TRANSLATED", "HTTP_PC_REMOTE_ADDR", "PHP_SELF", |
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"SCRIPT_FILENAME", "SERVER_NAME", "SERVER_ADDR"); |
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foreach ($hdr as $str) { |
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$$str = ((_BBC_PHP < 410) ? !empty($HTTP_SERVER_VARS[$str]) : !empty($_SERVER[$str])) ? |
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bbc_clean(((_BBC_PHP < 410) ? $HTTP_SERVER_VARS[$str] : $_SERVER[$str]), $BBC_SEP) : false; |
| 306 |
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} |
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// determine whether we got the "ORIG_" prefix |
| 309 |
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foreach (array("PATH_INFO", "PATH_TRANSLATED", "SCRIPT_FILENAME") as $env) { |
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$$env = !empty(${"ORIG_".$env}) ? ${"ORIG_".$env} : $$env; |
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} |
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$filename = (empty($PATH_TRANSLATED) || ($PATH_TRANSLATED == $DOCUMENT_ROOT)) ? basename($SCRIPT_FILENAME) : |
| 314 |
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basename($PATH_TRANSLATED); |
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|
|
$REMOTE_ADDR = ((stristr(PHP_OS, "darwin") !== false) && !empty($HTTP_PC_REMOTE_ADDR)) ? $HTTP_PC_REMOTE_ADDR : |
| 316 |
|
|
$REMOTE_ADDR; |
| 317 |
|
|
$REQUEST_URI = $this->bbc_filter_uri($filename, $PATH_INFO , $PHP_SELF); |
| 318 |
|
|
$SERVER_ADDR = empty($SERVER_ADDR) ? $LOCAL_ADDR : $SERVER_ADDR; |
| 319 |
|
|
$SERVER_ADDR = $this->bbc_valid_ip($SERVER_ADDR) ? $SERVER_ADDR : "127.0.0.1"; |
| 320 |
|
|
$HTTP_USER_AGENT = empty($HTTP_USER_AGENT) ? "unknown" : $HTTP_USER_AGENT; |
| 321 |
|
|
$HTTP_REFERER = empty($HTTP_REFERER) ? "unknown" : |
| 322 |
|
|
$this->bbc_filter_ref($HTTP_HOST, $HTTP_REFERER, $SERVER_NAME, $SERVER_ADDR); |
| 323 |
|
|
// Use a page name even if the user didn't specify it |
| 324 |
|
|
$page = defined("_BBC_PAGE_NAME") ? bbc_clean(_BBC_PAGE_NAME, $BBC_SEP) : $this->bbc_auto_page_name($REQUEST_URI); |
| 325 |
|
|
$prx = $this->bbc_parse_headers(); |
| 326 |
|
|
|
| 327 |
|
|
if (!empty($prx)) { |
| 328 |
|
|
$prx_addr = $this->bbc_get_remote_addr($REMOTE_ADDR, $HTTP_X_REMOTECLIENT_IP); |
| 329 |
|
|
|
| 330 |
|
|
if (($this->ignored = $this->bbc_is_ignored($BBC_IGNORE_IP, $prx_addr)) !== false) return; |
| 331 |
|
|
else $REMOTE_ADDR = bbc_clean($prx, $BBC_SEP); |
| 332 |
|
|
} |
| 333 |
|
|
else { |
| 334 |
|
|
$prx_addr = "unknown"; |
| 335 |
|
|
$REMOTE_ADDR = $this->bbc_get_remote_addr($REMOTE_ADDR, $HTTP_X_REMOTECLIENT_IP); |
| 336 |
|
|
} |
| 337 |
|
|
|
| 338 |
|
|
if (($this->ignored = $this->bbc_is_ignored($BBC_IGNORE_IP, $REMOTE_ADDR)) !== false) return; |
| 339 |
|
|
|
| 340 |
|
|
// "unknown" is meant as a placeholder for the hostname, which will be processed at a different location |
| 341 |
|
|
$this->string = $time.$this->sep.$prx_addr.$this->sep.$REMOTE_ADDR.$this->sep."unknown".$this->sep |
| 342 |
|
|
.$HTTP_USER_AGENT.$this->sep.$HTTP_REFERER.$this->sep.$REQUEST_URI.$this->sep.$page."\n"; |
| 343 |
|
|
} |
| 344 |
|
|
} |
| 345 |
|
|
?> |
