| <HTML> |
| <BODY BGCOLOR="white"> |
| <PRE> |
| <FONT color="green">001</FONT> /*<a name="line.1"></a> |
| <FONT color="green">002</FONT> * Licensed to the Apache Software Foundation (ASF) under one<a name="line.2"></a> |
| <FONT color="green">003</FONT> * or more contributor license agreements. See the NOTICE file<a name="line.3"></a> |
| <FONT color="green">004</FONT> * distributed with this work for additional information<a name="line.4"></a> |
| <FONT color="green">005</FONT> * regarding copyright ownership. The ASF licenses this file<a name="line.5"></a> |
| <FONT color="green">006</FONT> * to you under the Apache License, Version 2.0 (the<a name="line.6"></a> |
| <FONT color="green">007</FONT> * "License"); you may not use this file except in compliance<a name="line.7"></a> |
| <FONT color="green">008</FONT> * with the License. You may obtain a copy of the License at<a name="line.8"></a> |
| <FONT color="green">009</FONT> *<a name="line.9"></a> |
| <FONT color="green">010</FONT> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.10"></a> |
| <FONT color="green">011</FONT> *<a name="line.11"></a> |
| <FONT color="green">012</FONT> * Unless required by applicable law or agreed to in writing,<a name="line.12"></a> |
| <FONT color="green">013</FONT> * software distributed under the License is distributed on an<a name="line.13"></a> |
| <FONT color="green">014</FONT> * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY<a name="line.14"></a> |
| <FONT color="green">015</FONT> * KIND, either express or implied. See the License for the<a name="line.15"></a> |
| <FONT color="green">016</FONT> * specific language governing permissions and limitations<a name="line.16"></a> |
| <FONT color="green">017</FONT> * under the License.<a name="line.17"></a> |
| <FONT color="green">018</FONT> */<a name="line.18"></a> |
| <FONT color="green">019</FONT> package org.apache.shiro.web.filter.authz;<a name="line.19"></a> |
| <FONT color="green">020</FONT> <a name="line.20"></a> |
| <FONT color="green">021</FONT> import org.apache.shiro.util.StringUtils;<a name="line.21"></a> |
| <FONT color="green">022</FONT> <a name="line.22"></a> |
| <FONT color="green">023</FONT> import javax.servlet.ServletRequest;<a name="line.23"></a> |
| <FONT color="green">024</FONT> import javax.servlet.ServletResponse;<a name="line.24"></a> |
| <FONT color="green">025</FONT> import java.util.regex.Pattern;<a name="line.25"></a> |
| <FONT color="green">026</FONT> import java.util.Map;<a name="line.26"></a> |
| <FONT color="green">027</FONT> <a name="line.27"></a> |
| <FONT color="green">028</FONT> /**<a name="line.28"></a> |
| <FONT color="green">029</FONT> * A Filter that can allow or deny access based on the host that sent the request.<a name="line.29"></a> |
| <FONT color="green">030</FONT> *<a name="line.30"></a> |
| <FONT color="green">031</FONT> * <b>WARNING:</b> NOT YET FULLY IMPLEMENTED!!! Work in progress.<a name="line.31"></a> |
| <FONT color="green">032</FONT> *<a name="line.32"></a> |
| <FONT color="green">033</FONT> * @since 1.0<a name="line.33"></a> |
| <FONT color="green">034</FONT> */<a name="line.34"></a> |
| <FONT color="green">035</FONT> public class HostFilter extends AuthorizationFilter {<a name="line.35"></a> |
| <FONT color="green">036</FONT> <a name="line.36"></a> |
| <FONT color="green">037</FONT> public static final String IPV4_QUAD_REGEX = "(?:[0-9]|[1-9][0-9]|1[0-9][0-9]|2(?:[0-4][0-9]|5[0-5]))";<a name="line.37"></a> |
| <FONT color="green">038</FONT> <a name="line.38"></a> |
| <FONT color="green">039</FONT> public static final String IPV4_REGEX = "(?:" + IPV4_QUAD_REGEX + "\\.){3}" + IPV4_QUAD_REGEX + "$";<a name="line.39"></a> |
| <FONT color="green">040</FONT> public static final Pattern IPV4_PATTERN = Pattern.compile(IPV4_REGEX);<a name="line.40"></a> |
| <FONT color="green">041</FONT> <a name="line.41"></a> |
| <FONT color="green">042</FONT> public static final String PRIVATE_CLASS_B_SUBSET = "(?:1[6-9]|2[0-9]|3[0-1])";<a name="line.42"></a> |
| <FONT color="green">043</FONT> <a name="line.43"></a> |
| <FONT color="green">044</FONT> public static final String PRIVATE_CLASS_A_REGEX = "10\\.(?:" + IPV4_QUAD_REGEX + "\\.){2}" + IPV4_QUAD_REGEX + "$";<a name="line.44"></a> |
| <FONT color="green">045</FONT> <a name="line.45"></a> |
| <FONT color="green">046</FONT> public static final String PRIVATE_CLASS_B_REGEX =<a name="line.46"></a> |
| <FONT color="green">047</FONT> "172\\." + PRIVATE_CLASS_B_SUBSET + "\\." + IPV4_QUAD_REGEX + "\\." + IPV4_QUAD_REGEX + "$";<a name="line.47"></a> |
| <FONT color="green">048</FONT> <a name="line.48"></a> |
| <FONT color="green">049</FONT> public static final String PRIVATE_CLASS_C_REGEX = "192\\.168\\." + IPV4_QUAD_REGEX + "\\." + IPV4_QUAD_REGEX + "$";<a name="line.49"></a> |
| <FONT color="green">050</FONT> <a name="line.50"></a> |
| <FONT color="green">051</FONT> Map<String, String> authorizedIps; //user-configured IP (which can be wildcarded) to constructed regex mapping<a name="line.51"></a> |
| <FONT color="green">052</FONT> Map<String, String> deniedIps;<a name="line.52"></a> |
| <FONT color="green">053</FONT> Map<String, String> authorizedHostnames;<a name="line.53"></a> |
| <FONT color="green">054</FONT> Map<String, String> deniedHostnames;<a name="line.54"></a> |
| <FONT color="green">055</FONT> <a name="line.55"></a> |
| <FONT color="green">056</FONT> <a name="line.56"></a> |
| <FONT color="green">057</FONT> public void setAuthorizedHosts(String authorizedHosts) {<a name="line.57"></a> |
| <FONT color="green">058</FONT> if (!StringUtils.hasText(authorizedHosts)) {<a name="line.58"></a> |
| <FONT color="green">059</FONT> throw new IllegalArgumentException("authorizedHosts argument cannot be null or empty.");<a name="line.59"></a> |
| <FONT color="green">060</FONT> }<a name="line.60"></a> |
| <FONT color="green">061</FONT> String[] hosts = StringUtils.tokenizeToStringArray(authorizedHosts, ", \t");<a name="line.61"></a> |
| <FONT color="green">062</FONT> <a name="line.62"></a> |
| <FONT color="green">063</FONT> for (String host : hosts) {<a name="line.63"></a> |
| <FONT color="green">064</FONT> //replace any periods with \\. to ensure the regex works:<a name="line.64"></a> |
| <FONT color="green">065</FONT> String periodsReplaced = host.replace(".", "\\.");<a name="line.65"></a> |
| <FONT color="green">066</FONT> //check for IPv4:<a name="line.66"></a> |
| <FONT color="green">067</FONT> String wildcardsReplaced = periodsReplaced.replace("*", IPV4_QUAD_REGEX);<a name="line.67"></a> |
| <FONT color="green">068</FONT> <a name="line.68"></a> |
| <FONT color="green">069</FONT> if (IPV4_PATTERN.matcher(wildcardsReplaced).matches()) {<a name="line.69"></a> |
| <FONT color="green">070</FONT> authorizedIps.put(host, wildcardsReplaced);<a name="line.70"></a> |
| <FONT color="green">071</FONT> } else {<a name="line.71"></a> |
| <FONT color="green">072</FONT> <a name="line.72"></a> |
| <FONT color="green">073</FONT> }<a name="line.73"></a> |
| <FONT color="green">074</FONT> <a name="line.74"></a> |
| <FONT color="green">075</FONT> <a name="line.75"></a> |
| <FONT color="green">076</FONT> }<a name="line.76"></a> |
| <FONT color="green">077</FONT> <a name="line.77"></a> |
| <FONT color="green">078</FONT> }<a name="line.78"></a> |
| <FONT color="green">079</FONT> <a name="line.79"></a> |
| <FONT color="green">080</FONT> public void setDeniedHosts(String deniedHosts) {<a name="line.80"></a> |
| <FONT color="green">081</FONT> if (!StringUtils.hasText(deniedHosts)) {<a name="line.81"></a> |
| <FONT color="green">082</FONT> throw new IllegalArgumentException("deniedHosts argument cannot be null or empty.");<a name="line.82"></a> |
| <FONT color="green">083</FONT> }<a name="line.83"></a> |
| <FONT color="green">084</FONT> }<a name="line.84"></a> |
| <FONT color="green">085</FONT> <a name="line.85"></a> |
| <FONT color="green">086</FONT> protected boolean isIpv4Candidate(String host) {<a name="line.86"></a> |
| <FONT color="green">087</FONT> String[] quads = StringUtils.tokenizeToStringArray(host, ".");<a name="line.87"></a> |
| <FONT color="green">088</FONT> if (quads == null || quads.length != 4) {<a name="line.88"></a> |
| <FONT color="green">089</FONT> return false;<a name="line.89"></a> |
| <FONT color="green">090</FONT> }<a name="line.90"></a> |
| <FONT color="green">091</FONT> for (String quad : quads) {<a name="line.91"></a> |
| <FONT color="green">092</FONT> if (!quad.equals("*")) {<a name="line.92"></a> |
| <FONT color="green">093</FONT> try {<a name="line.93"></a> |
| <FONT color="green">094</FONT> Integer.parseInt(quad);<a name="line.94"></a> |
| <FONT color="green">095</FONT> } catch (NumberFormatException nfe) {<a name="line.95"></a> |
| <FONT color="green">096</FONT> return false;<a name="line.96"></a> |
| <FONT color="green">097</FONT> }<a name="line.97"></a> |
| <FONT color="green">098</FONT> }<a name="line.98"></a> |
| <FONT color="green">099</FONT> }<a name="line.99"></a> |
| <FONT color="green">100</FONT> return true;<a name="line.100"></a> |
| <FONT color="green">101</FONT> }<a name="line.101"></a> |
| <FONT color="green">102</FONT> <a name="line.102"></a> |
| <FONT color="green">103</FONT> protected boolean isAccessAllowed(ServletRequest request, ServletResponse response, Object mappedValue) throws Exception {<a name="line.103"></a> |
| <FONT color="green">104</FONT> throw new UnsupportedOperationException("Not yet fully implemented!!!" );<a name="line.104"></a> |
| <FONT color="green">105</FONT> }<a name="line.105"></a> |
| <FONT color="green">106</FONT> }<a name="line.106"></a> |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| </PRE> |
| </BODY> |
| </HTML> |
