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<FONT color="green">001</FONT>    package org.apache.archiva.checksum;<a name="line.1"></a>
<FONT color="green">002</FONT>    <a name="line.2"></a>
<FONT color="green">003</FONT>    /*<a name="line.3"></a>
<FONT color="green">004</FONT>     * Licensed to the Apache Software Foundation (ASF) under one<a name="line.4"></a>
<FONT color="green">005</FONT>     * or more contributor license agreements.  See the NOTICE file<a name="line.5"></a>
<FONT color="green">006</FONT>     * distributed with this work for additional information<a name="line.6"></a>
<FONT color="green">007</FONT>     * regarding copyright ownership.  The ASF licenses this file<a name="line.7"></a>
<FONT color="green">008</FONT>     * to you under the Apache License, Version 2.0 (the<a name="line.8"></a>
<FONT color="green">009</FONT>     * "License"); you may not use this file except in compliance<a name="line.9"></a>
<FONT color="green">010</FONT>     * with the License.  You may obtain a copy of the License at<a name="line.10"></a>
<FONT color="green">011</FONT>     *<a name="line.11"></a>
<FONT color="green">012</FONT>     *   http://www.apache.org/licenses/LICENSE-2.0<a name="line.12"></a>
<FONT color="green">013</FONT>     *<a name="line.13"></a>
<FONT color="green">014</FONT>     * Unless required by applicable law or agreed to in writing,<a name="line.14"></a>
<FONT color="green">015</FONT>     * software distributed under the License is distributed on an<a name="line.15"></a>
<FONT color="green">016</FONT>     * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY<a name="line.16"></a>
<FONT color="green">017</FONT>     * KIND, either express or implied.  See the License for the<a name="line.17"></a>
<FONT color="green">018</FONT>     * specific language governing permissions and limitations<a name="line.18"></a>
<FONT color="green">019</FONT>     * under the License.<a name="line.19"></a>
<FONT color="green">020</FONT>     */<a name="line.20"></a>
<FONT color="green">021</FONT>    <a name="line.21"></a>
<FONT color="green">022</FONT>    import org.apache.commons.io.FileUtils;<a name="line.22"></a>
<FONT color="green">023</FONT>    import org.apache.commons.io.IOUtils;<a name="line.23"></a>
<FONT color="green">024</FONT>    import org.apache.commons.lang.StringUtils;<a name="line.24"></a>
<FONT color="green">025</FONT>    import org.slf4j.Logger;<a name="line.25"></a>
<FONT color="green">026</FONT>    import org.slf4j.LoggerFactory;<a name="line.26"></a>
<FONT color="green">027</FONT>    <a name="line.27"></a>
<FONT color="green">028</FONT>    import java.io.File;<a name="line.28"></a>
<FONT color="green">029</FONT>    import java.io.FileInputStream;<a name="line.29"></a>
<FONT color="green">030</FONT>    import java.io.IOException;<a name="line.30"></a>
<FONT color="green">031</FONT>    import java.util.ArrayList;<a name="line.31"></a>
<FONT color="green">032</FONT>    import java.util.List;<a name="line.32"></a>
<FONT color="green">033</FONT>    import java.util.regex.Matcher;<a name="line.33"></a>
<FONT color="green">034</FONT>    import java.util.regex.Pattern;<a name="line.34"></a>
<FONT color="green">035</FONT>    <a name="line.35"></a>
<FONT color="green">036</FONT>    /**<a name="line.36"></a>
<FONT color="green">037</FONT>     * ChecksummedFile<a name="line.37"></a>
<FONT color="green">038</FONT>     * &lt;p/&gt;<a name="line.38"></a>
<FONT color="green">039</FONT>     * &lt;dl&gt;<a name="line.39"></a>
<FONT color="green">040</FONT>     * &lt;lh&gt;Terminology:&lt;/lh&gt;<a name="line.40"></a>
<FONT color="green">041</FONT>     * &lt;dt&gt;Checksum File&lt;/dt&gt;<a name="line.41"></a>
<FONT color="green">042</FONT>     * &lt;dd&gt;The file that contains the previously calculated checksum value for the reference file.<a name="line.42"></a>
<FONT color="green">043</FONT>     * This is a text file with the extension ".sha1" or ".md5", and contains a single entry<a name="line.43"></a>
<FONT color="green">044</FONT>     * consisting of an optional reference filename, and a checksum string.<a name="line.44"></a>
<FONT color="green">045</FONT>     * &lt;/dd&gt;<a name="line.45"></a>
<FONT color="green">046</FONT>     * &lt;dt&gt;Reference File&lt;/dt&gt;<a name="line.46"></a>
<FONT color="green">047</FONT>     * &lt;dd&gt;The file that is being referenced in the checksum file.&lt;/dd&gt;<a name="line.47"></a>
<FONT color="green">048</FONT>     * &lt;/dl&gt;<a name="line.48"></a>
<FONT color="green">049</FONT>     *<a name="line.49"></a>
<FONT color="green">050</FONT>     *<a name="line.50"></a>
<FONT color="green">051</FONT>     */<a name="line.51"></a>
<FONT color="green">052</FONT>    public class ChecksummedFile<a name="line.52"></a>
<FONT color="green">053</FONT>    {<a name="line.53"></a>
<FONT color="green">054</FONT>        private Logger log = LoggerFactory.getLogger( ChecksummedFile.class );<a name="line.54"></a>
<FONT color="green">055</FONT>    <a name="line.55"></a>
<FONT color="green">056</FONT>        private final File referenceFile;<a name="line.56"></a>
<FONT color="green">057</FONT>    <a name="line.57"></a>
<FONT color="green">058</FONT>        /**<a name="line.58"></a>
<FONT color="green">059</FONT>         * Construct a ChecksummedFile object.<a name="line.59"></a>
<FONT color="green">060</FONT>         *<a name="line.60"></a>
<FONT color="green">061</FONT>         * @param referenceFile<a name="line.61"></a>
<FONT color="green">062</FONT>         */<a name="line.62"></a>
<FONT color="green">063</FONT>        public ChecksummedFile( final File referenceFile )<a name="line.63"></a>
<FONT color="green">064</FONT>        {<a name="line.64"></a>
<FONT color="green">065</FONT>            this.referenceFile = referenceFile;<a name="line.65"></a>
<FONT color="green">066</FONT>        }<a name="line.66"></a>
<FONT color="green">067</FONT>    <a name="line.67"></a>
<FONT color="green">068</FONT>        /**<a name="line.68"></a>
<FONT color="green">069</FONT>         * Calculate the checksum based on a given checksum.<a name="line.69"></a>
<FONT color="green">070</FONT>         *<a name="line.70"></a>
<FONT color="green">071</FONT>         * @param checksumAlgorithm the algorithm to use.<a name="line.71"></a>
<FONT color="green">072</FONT>         * @return the checksum string for the file.<a name="line.72"></a>
<FONT color="green">073</FONT>         * @throws IOException if unable to calculate the checksum.<a name="line.73"></a>
<FONT color="green">074</FONT>         */<a name="line.74"></a>
<FONT color="green">075</FONT>        public String calculateChecksum( ChecksumAlgorithm checksumAlgorithm )<a name="line.75"></a>
<FONT color="green">076</FONT>            throws IOException<a name="line.76"></a>
<FONT color="green">077</FONT>        {<a name="line.77"></a>
<FONT color="green">078</FONT>            FileInputStream fis = null;<a name="line.78"></a>
<FONT color="green">079</FONT>            try<a name="line.79"></a>
<FONT color="green">080</FONT>            {<a name="line.80"></a>
<FONT color="green">081</FONT>                Checksum checksum = new Checksum( checksumAlgorithm );<a name="line.81"></a>
<FONT color="green">082</FONT>                fis = new FileInputStream( referenceFile );<a name="line.82"></a>
<FONT color="green">083</FONT>                checksum.update( fis );<a name="line.83"></a>
<FONT color="green">084</FONT>                return checksum.getChecksum();<a name="line.84"></a>
<FONT color="green">085</FONT>            }<a name="line.85"></a>
<FONT color="green">086</FONT>            finally<a name="line.86"></a>
<FONT color="green">087</FONT>            {<a name="line.87"></a>
<FONT color="green">088</FONT>                IOUtils.closeQuietly( fis );<a name="line.88"></a>
<FONT color="green">089</FONT>            }<a name="line.89"></a>
<FONT color="green">090</FONT>        }<a name="line.90"></a>
<FONT color="green">091</FONT>    <a name="line.91"></a>
<FONT color="green">092</FONT>        /**<a name="line.92"></a>
<FONT color="green">093</FONT>         * Creates a checksum file of the provided referenceFile.<a name="line.93"></a>
<FONT color="green">094</FONT>         *<a name="line.94"></a>
<FONT color="green">095</FONT>         * @param checksumAlgorithm the hash to use.<a name="line.95"></a>
<FONT color="green">096</FONT>         * @return the checksum File that was created.<a name="line.96"></a>
<FONT color="green">097</FONT>         * @throws IOException if there was a problem either reading the referenceFile, or writing the checksum file.<a name="line.97"></a>
<FONT color="green">098</FONT>         */<a name="line.98"></a>
<FONT color="green">099</FONT>        public File createChecksum( ChecksumAlgorithm checksumAlgorithm )<a name="line.99"></a>
<FONT color="green">100</FONT>            throws IOException<a name="line.100"></a>
<FONT color="green">101</FONT>        {<a name="line.101"></a>
<FONT color="green">102</FONT>            File checksumFile = new File( referenceFile.getAbsolutePath() + "." + checksumAlgorithm.getExt() );<a name="line.102"></a>
<FONT color="green">103</FONT>            String checksum = calculateChecksum( checksumAlgorithm );<a name="line.103"></a>
<FONT color="green">104</FONT>            FileUtils.writeStringToFile( checksumFile, checksum + "  " + referenceFile.getName() );<a name="line.104"></a>
<FONT color="green">105</FONT>            return checksumFile;<a name="line.105"></a>
<FONT color="green">106</FONT>        }<a name="line.106"></a>
<FONT color="green">107</FONT>    <a name="line.107"></a>
<FONT color="green">108</FONT>        /**<a name="line.108"></a>
<FONT color="green">109</FONT>         * Get the checksum file for the reference file and hash.<a name="line.109"></a>
<FONT color="green">110</FONT>         *<a name="line.110"></a>
<FONT color="green">111</FONT>         * @param checksumAlgorithm the hash that we are interested in.<a name="line.111"></a>
<FONT color="green">112</FONT>         * @return the checksum file to return<a name="line.112"></a>
<FONT color="green">113</FONT>         */<a name="line.113"></a>
<FONT color="green">114</FONT>        public File getChecksumFile( ChecksumAlgorithm checksumAlgorithm )<a name="line.114"></a>
<FONT color="green">115</FONT>        {<a name="line.115"></a>
<FONT color="green">116</FONT>            return new File( referenceFile.getAbsolutePath() + "." + checksumAlgorithm.getExt() );<a name="line.116"></a>
<FONT color="green">117</FONT>        }<a name="line.117"></a>
<FONT color="green">118</FONT>    <a name="line.118"></a>
<FONT color="green">119</FONT>        /**<a name="line.119"></a>
<FONT color="green">120</FONT>         * &lt;p&gt;<a name="line.120"></a>
<FONT color="green">121</FONT>         * Given a checksum file, check to see if the file it represents is valid according to the checksum.<a name="line.121"></a>
<FONT color="green">122</FONT>         * &lt;/p&gt;<a name="line.122"></a>
<FONT color="green">123</FONT>         * &lt;p/&gt;<a name="line.123"></a>
<FONT color="green">124</FONT>         * &lt;p&gt;<a name="line.124"></a>
<FONT color="green">125</FONT>         * NOTE: Only supports single file checksums of type MD5 or SHA1.<a name="line.125"></a>
<FONT color="green">126</FONT>         * &lt;/p&gt;<a name="line.126"></a>
<FONT color="green">127</FONT>         *<a name="line.127"></a>
<FONT color="green">128</FONT>         * @param checksumFile the algorithms to check for.<a name="line.128"></a>
<FONT color="green">129</FONT>         * @return true if the checksum is valid for the file it represents. or if the checksum file does not exist.<a name="line.129"></a>
<FONT color="green">130</FONT>         * @throws IOException if the reading of the checksumFile or the file it refers to fails.<a name="line.130"></a>
<FONT color="green">131</FONT>         */<a name="line.131"></a>
<FONT color="green">132</FONT>        public boolean isValidChecksum( ChecksumAlgorithm algorithm )<a name="line.132"></a>
<FONT color="green">133</FONT>            throws IOException<a name="line.133"></a>
<FONT color="green">134</FONT>        {<a name="line.134"></a>
<FONT color="green">135</FONT>            return isValidChecksums( new ChecksumAlgorithm[]{ algorithm } );<a name="line.135"></a>
<FONT color="green">136</FONT>        }<a name="line.136"></a>
<FONT color="green">137</FONT>    <a name="line.137"></a>
<FONT color="green">138</FONT>        /**<a name="line.138"></a>
<FONT color="green">139</FONT>         * Of any checksum files present, validate that the reference file conforms<a name="line.139"></a>
<FONT color="green">140</FONT>         * the to the checksum.<a name="line.140"></a>
<FONT color="green">141</FONT>         *<a name="line.141"></a>
<FONT color="green">142</FONT>         * @param algorithms the algorithms to check for.<a name="line.142"></a>
<FONT color="green">143</FONT>         * @return true if the checksums report that the the reference file is valid, false if invalid.<a name="line.143"></a>
<FONT color="green">144</FONT>         */<a name="line.144"></a>
<FONT color="green">145</FONT>        public boolean isValidChecksums( ChecksumAlgorithm algorithms[] )<a name="line.145"></a>
<FONT color="green">146</FONT>        {<a name="line.146"></a>
<FONT color="green">147</FONT>            FileInputStream fis = null;<a name="line.147"></a>
<FONT color="green">148</FONT>            try<a name="line.148"></a>
<FONT color="green">149</FONT>            {<a name="line.149"></a>
<FONT color="green">150</FONT>                List&lt;Checksum&gt; checksums = new ArrayList&lt;Checksum&gt;( algorithms.length );<a name="line.150"></a>
<FONT color="green">151</FONT>                // Create checksum object for each algorithm.<a name="line.151"></a>
<FONT color="green">152</FONT>                for ( ChecksumAlgorithm checksumAlgorithm : algorithms )<a name="line.152"></a>
<FONT color="green">153</FONT>                {<a name="line.153"></a>
<FONT color="green">154</FONT>                    File checksumFile = getChecksumFile( checksumAlgorithm );<a name="line.154"></a>
<FONT color="green">155</FONT>    <a name="line.155"></a>
<FONT color="green">156</FONT>                    // Only add algorithm if checksum file exists.<a name="line.156"></a>
<FONT color="green">157</FONT>                    if ( checksumFile.exists() )<a name="line.157"></a>
<FONT color="green">158</FONT>                    {<a name="line.158"></a>
<FONT color="green">159</FONT>                        checksums.add( new Checksum( checksumAlgorithm ) );<a name="line.159"></a>
<FONT color="green">160</FONT>                    }<a name="line.160"></a>
<FONT color="green">161</FONT>                }<a name="line.161"></a>
<FONT color="green">162</FONT>    <a name="line.162"></a>
<FONT color="green">163</FONT>                // Any checksums?<a name="line.163"></a>
<FONT color="green">164</FONT>                if ( checksums.isEmpty() )<a name="line.164"></a>
<FONT color="green">165</FONT>                {<a name="line.165"></a>
<FONT color="green">166</FONT>                    // No checksum objects, no checksum files, default to is invalid.<a name="line.166"></a>
<FONT color="green">167</FONT>                    return false;<a name="line.167"></a>
<FONT color="green">168</FONT>                }<a name="line.168"></a>
<FONT color="green">169</FONT>    <a name="line.169"></a>
<FONT color="green">170</FONT>                // Parse file once, for all checksums.<a name="line.170"></a>
<FONT color="green">171</FONT>                try<a name="line.171"></a>
<FONT color="green">172</FONT>                {<a name="line.172"></a>
<FONT color="green">173</FONT>                    fis = new FileInputStream( referenceFile );<a name="line.173"></a>
<FONT color="green">174</FONT>                    Checksum.update( checksums, fis );<a name="line.174"></a>
<FONT color="green">175</FONT>                }<a name="line.175"></a>
<FONT color="green">176</FONT>                catch ( IOException e )<a name="line.176"></a>
<FONT color="green">177</FONT>                {<a name="line.177"></a>
<FONT color="green">178</FONT>                    log.warn( "Unable to update checksum:" + e.getMessage() );<a name="line.178"></a>
<FONT color="green">179</FONT>                    return false;<a name="line.179"></a>
<FONT color="green">180</FONT>                }<a name="line.180"></a>
<FONT color="green">181</FONT>    <a name="line.181"></a>
<FONT color="green">182</FONT>                boolean valid = true;<a name="line.182"></a>
<FONT color="green">183</FONT>    <a name="line.183"></a>
<FONT color="green">184</FONT>                // check the checksum files<a name="line.184"></a>
<FONT color="green">185</FONT>                try<a name="line.185"></a>
<FONT color="green">186</FONT>                {<a name="line.186"></a>
<FONT color="green">187</FONT>                    for ( Checksum checksum : checksums )<a name="line.187"></a>
<FONT color="green">188</FONT>                    {<a name="line.188"></a>
<FONT color="green">189</FONT>                        ChecksumAlgorithm checksumAlgorithm = checksum.getAlgorithm();<a name="line.189"></a>
<FONT color="green">190</FONT>                        File checksumFile = getChecksumFile( checksumAlgorithm );<a name="line.190"></a>
<FONT color="green">191</FONT>    <a name="line.191"></a>
<FONT color="green">192</FONT>                        String rawChecksum = FileUtils.readFileToString( checksumFile );<a name="line.192"></a>
<FONT color="green">193</FONT>                        String expectedChecksum = parseChecksum( rawChecksum, checksumAlgorithm, referenceFile.getName() );<a name="line.193"></a>
<FONT color="green">194</FONT>    <a name="line.194"></a>
<FONT color="green">195</FONT>                        if ( !StringUtils.equalsIgnoreCase( expectedChecksum, checksum.getChecksum() ) )<a name="line.195"></a>
<FONT color="green">196</FONT>                        {<a name="line.196"></a>
<FONT color="green">197</FONT>                            valid = false;<a name="line.197"></a>
<FONT color="green">198</FONT>                        }<a name="line.198"></a>
<FONT color="green">199</FONT>                    }<a name="line.199"></a>
<FONT color="green">200</FONT>                }<a name="line.200"></a>
<FONT color="green">201</FONT>                catch ( IOException e )<a name="line.201"></a>
<FONT color="green">202</FONT>                {<a name="line.202"></a>
<FONT color="green">203</FONT>                    log.warn( "Unable to read / parse checksum: " + e.getMessage() );<a name="line.203"></a>
<FONT color="green">204</FONT>                    return false;<a name="line.204"></a>
<FONT color="green">205</FONT>                }<a name="line.205"></a>
<FONT color="green">206</FONT>    <a name="line.206"></a>
<FONT color="green">207</FONT>                return valid;<a name="line.207"></a>
<FONT color="green">208</FONT>            }<a name="line.208"></a>
<FONT color="green">209</FONT>            finally<a name="line.209"></a>
<FONT color="green">210</FONT>            {<a name="line.210"></a>
<FONT color="green">211</FONT>                IOUtils.closeQuietly( fis );<a name="line.211"></a>
<FONT color="green">212</FONT>            }<a name="line.212"></a>
<FONT color="green">213</FONT>        }<a name="line.213"></a>
<FONT color="green">214</FONT>    <a name="line.214"></a>
<FONT color="green">215</FONT>        /**<a name="line.215"></a>
<FONT color="green">216</FONT>         * Fix or create checksum files for the reference file.<a name="line.216"></a>
<FONT color="green">217</FONT>         *<a name="line.217"></a>
<FONT color="green">218</FONT>         * @param algorithms the hashes to check for.<a name="line.218"></a>
<FONT color="green">219</FONT>         * @return true if checksums were created successfully.<a name="line.219"></a>
<FONT color="green">220</FONT>         */<a name="line.220"></a>
<FONT color="green">221</FONT>        public boolean fixChecksums( ChecksumAlgorithm[] algorithms )<a name="line.221"></a>
<FONT color="green">222</FONT>        {<a name="line.222"></a>
<FONT color="green">223</FONT>            List&lt;Checksum&gt; checksums = new ArrayList&lt;Checksum&gt;( algorithms.length );<a name="line.223"></a>
<FONT color="green">224</FONT>            // Create checksum object for each algorithm.<a name="line.224"></a>
<FONT color="green">225</FONT>            for ( ChecksumAlgorithm checksumAlgorithm : algorithms )<a name="line.225"></a>
<FONT color="green">226</FONT>            {<a name="line.226"></a>
<FONT color="green">227</FONT>                checksums.add( new Checksum( checksumAlgorithm ) );<a name="line.227"></a>
<FONT color="green">228</FONT>            }<a name="line.228"></a>
<FONT color="green">229</FONT>    <a name="line.229"></a>
<FONT color="green">230</FONT>            // Any checksums?<a name="line.230"></a>
<FONT color="green">231</FONT>            if ( checksums.isEmpty() )<a name="line.231"></a>
<FONT color="green">232</FONT>            {<a name="line.232"></a>
<FONT color="green">233</FONT>                // No checksum objects, no checksum files, default to is valid.<a name="line.233"></a>
<FONT color="green">234</FONT>                return true;<a name="line.234"></a>
<FONT color="green">235</FONT>            }<a name="line.235"></a>
<FONT color="green">236</FONT>    <a name="line.236"></a>
<FONT color="green">237</FONT>            FileInputStream fis = null;<a name="line.237"></a>
<FONT color="green">238</FONT>            try<a name="line.238"></a>
<FONT color="green">239</FONT>            {<a name="line.239"></a>
<FONT color="green">240</FONT>                // Parse file once, for all checksums.<a name="line.240"></a>
<FONT color="green">241</FONT>                fis = new FileInputStream( referenceFile );<a name="line.241"></a>
<FONT color="green">242</FONT>                Checksum.update( checksums, fis );<a name="line.242"></a>
<FONT color="green">243</FONT>            }<a name="line.243"></a>
<FONT color="green">244</FONT>            catch ( IOException e )<a name="line.244"></a>
<FONT color="green">245</FONT>            {<a name="line.245"></a>
<FONT color="green">246</FONT>                log.warn( e.getMessage(), e );<a name="line.246"></a>
<FONT color="green">247</FONT>                return false;<a name="line.247"></a>
<FONT color="green">248</FONT>            }<a name="line.248"></a>
<FONT color="green">249</FONT>            finally<a name="line.249"></a>
<FONT color="green">250</FONT>            {<a name="line.250"></a>
<FONT color="green">251</FONT>                IOUtils.closeQuietly( fis );<a name="line.251"></a>
<FONT color="green">252</FONT>            }<a name="line.252"></a>
<FONT color="green">253</FONT>    <a name="line.253"></a>
<FONT color="green">254</FONT>            boolean valid = true;<a name="line.254"></a>
<FONT color="green">255</FONT>    <a name="line.255"></a>
<FONT color="green">256</FONT>            // check the hash files<a name="line.256"></a>
<FONT color="green">257</FONT>            for ( Checksum checksum : checksums )<a name="line.257"></a>
<FONT color="green">258</FONT>            {<a name="line.258"></a>
<FONT color="green">259</FONT>                ChecksumAlgorithm checksumAlgorithm = checksum.getAlgorithm();<a name="line.259"></a>
<FONT color="green">260</FONT>                try<a name="line.260"></a>
<FONT color="green">261</FONT>                {<a name="line.261"></a>
<FONT color="green">262</FONT>                    File checksumFile = getChecksumFile( checksumAlgorithm );<a name="line.262"></a>
<FONT color="green">263</FONT>                    String actualChecksum = checksum.getChecksum();<a name="line.263"></a>
<FONT color="green">264</FONT>    <a name="line.264"></a>
<FONT color="green">265</FONT>                    if ( checksumFile.exists() )<a name="line.265"></a>
<FONT color="green">266</FONT>                    {<a name="line.266"></a>
<FONT color="green">267</FONT>                        String rawChecksum = FileUtils.readFileToString( checksumFile );<a name="line.267"></a>
<FONT color="green">268</FONT>                        String expectedChecksum = parseChecksum( rawChecksum, checksumAlgorithm, referenceFile.getName() );<a name="line.268"></a>
<FONT color="green">269</FONT>    <a name="line.269"></a>
<FONT color="green">270</FONT>                        if ( !StringUtils.equalsIgnoreCase( expectedChecksum, actualChecksum ) )<a name="line.270"></a>
<FONT color="green">271</FONT>                        {<a name="line.271"></a>
<FONT color="green">272</FONT>                            // create checksum (again)<a name="line.272"></a>
<FONT color="green">273</FONT>                            FileUtils.writeStringToFile( checksumFile, actualChecksum + "  " + referenceFile.getName() );<a name="line.273"></a>
<FONT color="green">274</FONT>                        }<a name="line.274"></a>
<FONT color="green">275</FONT>                    }<a name="line.275"></a>
<FONT color="green">276</FONT>                    else<a name="line.276"></a>
<FONT color="green">277</FONT>                    {<a name="line.277"></a>
<FONT color="green">278</FONT>                        FileUtils.writeStringToFile( checksumFile, actualChecksum + "  " + referenceFile.getName() );<a name="line.278"></a>
<FONT color="green">279</FONT>                    }<a name="line.279"></a>
<FONT color="green">280</FONT>                }<a name="line.280"></a>
<FONT color="green">281</FONT>                catch ( IOException e )<a name="line.281"></a>
<FONT color="green">282</FONT>                {<a name="line.282"></a>
<FONT color="green">283</FONT>                    log.warn( e.getMessage(), e );<a name="line.283"></a>
<FONT color="green">284</FONT>                    valid = false;<a name="line.284"></a>
<FONT color="green">285</FONT>                }<a name="line.285"></a>
<FONT color="green">286</FONT>            }<a name="line.286"></a>
<FONT color="green">287</FONT>    <a name="line.287"></a>
<FONT color="green">288</FONT>            return valid;<a name="line.288"></a>
<FONT color="green">289</FONT>    <a name="line.289"></a>
<FONT color="green">290</FONT>        }<a name="line.290"></a>
<FONT color="green">291</FONT>    <a name="line.291"></a>
<FONT color="green">292</FONT>        private boolean isValidChecksumPattern( String filename, String path )<a name="line.292"></a>
<FONT color="green">293</FONT>        {<a name="line.293"></a>
<FONT color="green">294</FONT>            // check if it is a remote metadata file<a name="line.294"></a>
<FONT color="green">295</FONT>            Pattern pattern = Pattern.compile( "maven-metadata-\\S*.xml" );<a name="line.295"></a>
<FONT color="green">296</FONT>            Matcher m = pattern.matcher( path );<a name="line.296"></a>
<FONT color="green">297</FONT>            if ( m.matches() )<a name="line.297"></a>
<FONT color="green">298</FONT>            {<a name="line.298"></a>
<FONT color="green">299</FONT>                return filename.endsWith( path ) || ( "-".equals( filename ) ) || filename.endsWith( "maven-metadata.xml" );<a name="line.299"></a>
<FONT color="green">300</FONT>            }<a name="line.300"></a>
<FONT color="green">301</FONT>    <a name="line.301"></a>
<FONT color="green">302</FONT>            return filename.endsWith( path ) || ( "-".equals( filename ) );<a name="line.302"></a>
<FONT color="green">303</FONT>        }<a name="line.303"></a>
<FONT color="green">304</FONT>    <a name="line.304"></a>
<FONT color="green">305</FONT>        /**<a name="line.305"></a>
<FONT color="green">306</FONT>         * Parse a checksum string.<a name="line.306"></a>
<FONT color="green">307</FONT>         * &lt;p/&gt;<a name="line.307"></a>
<FONT color="green">308</FONT>         * Validate the expected path, and expected checksum algorithm, then return<a name="line.308"></a>
<FONT color="green">309</FONT>         * the trimmed checksum hex string.<a name="line.309"></a>
<FONT color="green">310</FONT>         *<a name="line.310"></a>
<FONT color="green">311</FONT>         * @param rawChecksumString<a name="line.311"></a>
<FONT color="green">312</FONT>         * @param expectedHash<a name="line.312"></a>
<FONT color="green">313</FONT>         * @param expectedPath<a name="line.313"></a>
<FONT color="green">314</FONT>         * @return<a name="line.314"></a>
<FONT color="green">315</FONT>         * @throws IOException<a name="line.315"></a>
<FONT color="green">316</FONT>         */<a name="line.316"></a>
<FONT color="green">317</FONT>        public String parseChecksum( String rawChecksumString, ChecksumAlgorithm expectedHash, String expectedPath )<a name="line.317"></a>
<FONT color="green">318</FONT>            throws IOException<a name="line.318"></a>
<FONT color="green">319</FONT>        {<a name="line.319"></a>
<FONT color="green">320</FONT>            String trimmedChecksum = rawChecksumString.replace( '\n', ' ' ).trim();<a name="line.320"></a>
<FONT color="green">321</FONT>    <a name="line.321"></a>
<FONT color="green">322</FONT>            // Free-BSD / openssl<a name="line.322"></a>
<FONT color="green">323</FONT>            String regex = expectedHash.getType() + "\\s*\\(([^)]*)\\)\\s*=\\s*([a-fA-F0-9]+)";<a name="line.323"></a>
<FONT color="green">324</FONT>            Matcher m = Pattern.compile( regex ).matcher( trimmedChecksum );<a name="line.324"></a>
<FONT color="green">325</FONT>            if ( m.matches() )<a name="line.325"></a>
<FONT color="green">326</FONT>            {<a name="line.326"></a>
<FONT color="green">327</FONT>                String filename = m.group( 1 );<a name="line.327"></a>
<FONT color="green">328</FONT>                if ( !isValidChecksumPattern( filename, expectedPath ) )<a name="line.328"></a>
<FONT color="green">329</FONT>                {<a name="line.329"></a>
<FONT color="green">330</FONT>                    throw new IOException(<a name="line.330"></a>
<FONT color="green">331</FONT>                        "Supplied checksum file '" + filename + "' does not match expected file: '" + expectedPath + "'" );<a name="line.331"></a>
<FONT color="green">332</FONT>                }<a name="line.332"></a>
<FONT color="green">333</FONT>                trimmedChecksum = m.group( 2 );<a name="line.333"></a>
<FONT color="green">334</FONT>            }<a name="line.334"></a>
<FONT color="green">335</FONT>            else<a name="line.335"></a>
<FONT color="green">336</FONT>            {<a name="line.336"></a>
<FONT color="green">337</FONT>                // GNU tools<a name="line.337"></a>
<FONT color="green">338</FONT>                m = Pattern.compile( "([a-fA-F0-9]+)\\s+\\*?(.+)" ).matcher( trimmedChecksum );<a name="line.338"></a>
<FONT color="green">339</FONT>                if ( m.matches() )<a name="line.339"></a>
<FONT color="green">340</FONT>                {<a name="line.340"></a>
<FONT color="green">341</FONT>                    String filename = m.group( 2 );<a name="line.341"></a>
<FONT color="green">342</FONT>                    if ( !isValidChecksumPattern( filename, expectedPath ) )<a name="line.342"></a>
<FONT color="green">343</FONT>                    {<a name="line.343"></a>
<FONT color="green">344</FONT>                        throw new IOException(<a name="line.344"></a>
<FONT color="green">345</FONT>                            "Supplied checksum file '" + filename + "' does not match expected file: '" + expectedPath<a name="line.345"></a>
<FONT color="green">346</FONT>                                + "'" );<a name="line.346"></a>
<FONT color="green">347</FONT>                    }<a name="line.347"></a>
<FONT color="green">348</FONT>                    trimmedChecksum = m.group( 1 );<a name="line.348"></a>
<FONT color="green">349</FONT>                }<a name="line.349"></a>
<FONT color="green">350</FONT>            }<a name="line.350"></a>
<FONT color="green">351</FONT>            return trimmedChecksum;<a name="line.351"></a>
<FONT color="green">352</FONT>        }<a name="line.352"></a>
<FONT color="green">353</FONT>    }<a name="line.353"></a>


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