first commit

wp/wp-content/plugins/wordfence/lib/wfBrowscap.php

@@ -0,0 +1,126 @@
+<?php
+class wfBrowscap {
+	protected $_cacheLoaded = false;
+	protected $_userAgents = array();
+	protected $_browsers = array();
+	protected $_patterns = array();
+	protected $_properties = array();
+	protected $resultCache = array();
+	const COMPRESSION_PATTERN_START = '@';
+	const COMPRESSION_PATTERN_DELIMITER = '|';
+	const REGEX_DELIMITER = '@';
+	
+	public static function shared() {
+		static $_browscap = null;
+		if ($_browscap === null) {
+			$_browscap = new wfBrowscap();
+		}
+		return $_browscap;
+	}
+
+    public function getBrowser($user_agent){
+        if (!$this->_cacheLoaded) {
+                if (!$this->_loadCache(dirname(__FILE__) . '/wfBrowscapCache.php')) {
+                    throw new Exception('Cannot load this cache version - the cache format is not compatible.');
+                }
+            }
+
+        $browser = array();
+        foreach ($this->_patterns as $pattern => $pattern_data) {
+            if (preg_match($pattern . 'i', $user_agent, $matches)) {
+                if (1 == count($matches)) {
+                    $key = $pattern_data;
+
+                    $simple_match = true;
+                } else {
+                    $pattern_data = unserialize($pattern_data);
+
+                    array_shift($matches);
+
+                    $match_string = self::COMPRESSION_PATTERN_START
+                        . implode(self::COMPRESSION_PATTERN_DELIMITER, $matches);
+
+                    if (!isset($pattern_data[$match_string])) {
+                        continue;
+                    }
+
+                    $key = $pattern_data[$match_string];
+
+                    $simple_match = false;
+                }
+
+                $browser = array(
+                    $user_agent,
+                    trim(strtolower($pattern), self::REGEX_DELIMITER),
+                    $this->_pregUnQuote($pattern, $simple_match ? false : $matches)
+                );
+
+                $browser = $value = $browser + unserialize($this->_browsers[$key]);
+
+                while (array_key_exists(3, $value)) {
+                    $value = unserialize($this->_browsers[$value[3]]);
+                    $browser += $value;
+                }
+
+                if (!empty($browser[3])) {
+                    $browser[3] = $this->_userAgents[$browser[3]];
+                }
+
+                break;
+            }
+        }
+
+        $array = array();
+        foreach ($browser as $key => $value) {
+            if ($value === 'true') {
+                $value = true;
+            } elseif ($value === 'false') {
+                $value = false;
+            }
+            $array[$this->_properties[$key]] = $value;
+        }
+
+        return $array;
+    }
+    protected function _loadCache($cache_file){
+        $cache_version  = null;
+        $browsers       = array();
+        $userAgents     = array();
+        $patterns       = array();
+        $properties     = array();
+
+        $this->_cacheLoaded = false;
+
+        require $cache_file;
+
+        $this->_browsers       = $browsers;
+        $this->_userAgents     = $userAgents;
+        $this->_patterns       = $patterns;
+        $this->_properties     = $properties;
+
+        $this->_cacheLoaded = true;
+
+        return true;
+    }
+    protected function _pregUnQuote($pattern, $matches){
+        $search  = array(
+            '\\' . self::REGEX_DELIMITER, '\\.', '\\\\', '\\+', '\\[', '\\^', '\\]', '\\$', '\\(', '\\)', '\\{', '\\}',
+            '\\=', '\\!', '\\<', '\\>', '\\|', '\\:', '\\-', '.*', '.', '\\?'
+        );
+        $replace = array(
+            self::REGEX_DELIMITER, '\\?', '\\', '+', '[', '^', ']', '$', '(', ')', '{', '}', '=', '!', '<', '>', '|',
+            ':', '-', '*', '?', '.'
+        );
+
+        $result = substr(str_replace($search, $replace, $pattern), 2, -2);
+
+        if ($matches) {
+            foreach ($matches as $one_match) {
+                $num_pos = strpos($result, '(\d)');
+                $result  = substr_replace($result, $one_match, $num_pos, 4);
+            }
+        }
+
+        return $result;
+    }
+}