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Posted to commits@turbine.apache.org by pa...@apache.org on 2019/05/21 03:58:59 UTC
svn commit: r1045259 [14/39] - in
/websites/production/turbine/content/fulcrum/fulcrum-yaafi-crypto: ./
apidocs/ apidocs/org/apache/fulcrum/jce/crypto/
apidocs/org/apache/fulcrum/jce/crypto/class-use/ apidocs/resources/
apidocs/src-html/org/apache/fulc...
Modified: websites/production/turbine/content/fulcrum/fulcrum-yaafi-crypto/apidocs/src-html/org/apache/fulcrum/jce/crypto/SmartDecryptingInputStream.html
==============================================================================
--- websites/production/turbine/content/fulcrum/fulcrum-yaafi-crypto/apidocs/src-html/org/apache/fulcrum/jce/crypto/SmartDecryptingInputStream.html (original)
+++ websites/production/turbine/content/fulcrum/fulcrum-yaafi-crypto/apidocs/src-html/org/apache/fulcrum/jce/crypto/SmartDecryptingInputStream.html Tue May 21 03:58:58 2019
@@ -1,382 +1,392 @@
-<HTML>
-<BODY BGCOLOR="white">
-<PRE>
-<FONT color="green">001</FONT> package org.apache.fulcrum.jce.crypto;<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 java.io.ByteArrayInputStream;<a name="line.22"></a>
-<FONT color="green">023</FONT> import java.io.ByteArrayOutputStream;<a name="line.23"></a>
-<FONT color="green">024</FONT> import java.io.IOException;<a name="line.24"></a>
-<FONT color="green">025</FONT> import java.io.InputStream;<a name="line.25"></a>
-<FONT color="green">026</FONT> import java.io.OutputStream;<a name="line.26"></a>
-<FONT color="green">027</FONT> import java.security.GeneralSecurityException;<a name="line.27"></a>
-<FONT color="green">028</FONT> <a name="line.28"></a>
-<FONT color="green">029</FONT> <a name="line.29"></a>
-<FONT color="green">030</FONT> /**<a name="line.30"></a>
-<FONT color="green">031</FONT> * An input stream that determine if the originating input stream<a name="line.31"></a>
-<FONT color="green">032</FONT> * was encrypted or not. This magic only works for well-known file<a name="line.32"></a>
-<FONT color="green">033</FONT> * types though.<a name="line.33"></a>
-<FONT color="green">034</FONT> *<a name="line.34"></a>
-<FONT color="green">035</FONT> * @author <a href="mailto:siegfried.goeschl@it20one.at">Siegfried Goeschl</a><a name="line.35"></a>
-<FONT color="green">036</FONT> */<a name="line.36"></a>
-<FONT color="green">037</FONT> public class SmartDecryptingInputStream extends ByteArrayInputStream<a name="line.37"></a>
-<FONT color="green">038</FONT> {<a name="line.38"></a>
-<FONT color="green">039</FONT> /** The encodings to be checked for XML */<a name="line.39"></a>
-<FONT color="green">040</FONT> private static final String[] ENCODINGS = { "ISO-8859-1", "UTF-8", "UTF-16" };<a name="line.40"></a>
-<FONT color="green">041</FONT> <a name="line.41"></a>
-<FONT color="green">042</FONT> /**<a name="line.42"></a>
-<FONT color="green">043</FONT> * Constructor<a name="line.43"></a>
-<FONT color="green">044</FONT> *<a name="line.44"></a>
-<FONT color="green">045</FONT> * @param cryptoStreamFactory the CryptoStreamFactory for creating a cipher stream<a name="line.45"></a>
-<FONT color="green">046</FONT> * @param is the input stream to be decrypted<a name="line.46"></a>
-<FONT color="green">047</FONT> */<a name="line.47"></a>
-<FONT color="green">048</FONT> public SmartDecryptingInputStream(<a name="line.48"></a>
-<FONT color="green">049</FONT> CryptoStreamFactory cryptoStreamFactory,<a name="line.49"></a>
-<FONT color="green">050</FONT> InputStream is )<a name="line.50"></a>
-<FONT color="green">051</FONT> throws IOException, GeneralSecurityException<a name="line.51"></a>
-<FONT color="green">052</FONT> {<a name="line.52"></a>
-<FONT color="green">053</FONT> this( cryptoStreamFactory, is, null );<a name="line.53"></a>
-<FONT color="green">054</FONT> }<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> * Constructor<a name="line.57"></a>
-<FONT color="green">058</FONT> *<a name="line.58"></a>
-<FONT color="green">059</FONT> * @param cryptoStreamFactory the CryptoStreamFactory for creating a cipher stream<a name="line.59"></a>
-<FONT color="green">060</FONT> * @param is the input stream to be decrypted<a name="line.60"></a>
-<FONT color="green">061</FONT> * @param password the password for decryption<a name="line.61"></a>
-<FONT color="green">062</FONT> */<a name="line.62"></a>
-<FONT color="green">063</FONT> public SmartDecryptingInputStream(<a name="line.63"></a>
-<FONT color="green">064</FONT> CryptoStreamFactory cryptoStreamFactory,<a name="line.64"></a>
-<FONT color="green">065</FONT> InputStream is,<a name="line.65"></a>
-<FONT color="green">066</FONT> char[] password )<a name="line.66"></a>
-<FONT color="green">067</FONT> throws IOException, GeneralSecurityException<a name="line.67"></a>
-<FONT color="green">068</FONT> {<a name="line.68"></a>
-<FONT color="green">069</FONT> super( new byte[0] );<a name="line.69"></a>
-<FONT color="green">070</FONT> <a name="line.70"></a>
-<FONT color="green">071</FONT> byte[] content = null;<a name="line.71"></a>
-<FONT color="green">072</FONT> byte[] plain = null;<a name="line.72"></a>
-<FONT color="green">073</FONT> <a name="line.73"></a>
-<FONT color="green">074</FONT> // store the data from the input stream<a name="line.74"></a>
-<FONT color="green">075</FONT> <a name="line.75"></a>
-<FONT color="green">076</FONT> ByteArrayOutputStream baosCipher = new ByteArrayOutputStream();<a name="line.76"></a>
-<FONT color="green">077</FONT> ByteArrayOutputStream baosPlain = new ByteArrayOutputStream();<a name="line.77"></a>
-<FONT color="green">078</FONT> this.copy( is, baosCipher );<a name="line.78"></a>
-<FONT color="green">079</FONT> <a name="line.79"></a>
-<FONT color="green">080</FONT> content = baosCipher.toByteArray();<a name="line.80"></a>
-<FONT color="green">081</FONT> plain = content;<a name="line.81"></a>
-<FONT color="green">082</FONT> <a name="line.82"></a>
-<FONT color="green">083</FONT> if( this.isEncrypted(content) == true )<a name="line.83"></a>
-<FONT color="green">084</FONT> {<a name="line.84"></a>
-<FONT color="green">085</FONT> InputStream cis = null;<a name="line.85"></a>
-<FONT color="green">086</FONT> ByteArrayInputStream bais = new ByteArrayInputStream(content);<a name="line.86"></a>
-<FONT color="green">087</FONT> <a name="line.87"></a>
-<FONT color="green">088</FONT> if( ( password != null ) && ( password.length > 0 ) )<a name="line.88"></a>
-<FONT color="green">089</FONT> {<a name="line.89"></a>
-<FONT color="green">090</FONT> cis = cryptoStreamFactory.getInputStream( bais, password );<a name="line.90"></a>
-<FONT color="green">091</FONT> }<a name="line.91"></a>
-<FONT color="green">092</FONT> else<a name="line.92"></a>
-<FONT color="green">093</FONT> {<a name="line.93"></a>
-<FONT color="green">094</FONT> cis = cryptoStreamFactory.getInputStream( bais );<a name="line.94"></a>
-<FONT color="green">095</FONT> }<a name="line.95"></a>
-<FONT color="green">096</FONT> <a name="line.96"></a>
-<FONT color="green">097</FONT> copy( cis, baosPlain );<a name="line.97"></a>
-<FONT color="green">098</FONT> plain = baosPlain.toByteArray();<a name="line.98"></a>
-<FONT color="green">099</FONT> }<a name="line.99"></a>
-<FONT color="green">100</FONT> <a name="line.100"></a>
-<FONT color="green">101</FONT> // initialize the inherited instance<a name="line.101"></a>
-<FONT color="green">102</FONT> <a name="line.102"></a>
-<FONT color="green">103</FONT> if( plain != null )<a name="line.103"></a>
-<FONT color="green">104</FONT> {<a name="line.104"></a>
-<FONT color="green">105</FONT> this.buf = plain;<a name="line.105"></a>
-<FONT color="green">106</FONT> this.pos = 0;<a name="line.106"></a>
-<FONT color="green">107</FONT> this.count = buf.length;<a name="line.107"></a>
-<FONT color="green">108</FONT> }<a name="line.108"></a>
-<FONT color="green">109</FONT> }<a name="line.109"></a>
-<FONT color="green">110</FONT> <a name="line.110"></a>
-<FONT color="green">111</FONT> /**<a name="line.111"></a>
-<FONT color="green">112</FONT> * Determine if the content is encrypted. We are<a name="line.112"></a>
-<FONT color="green">113</FONT> * using our knowledge about block lenght, check<a name="line.113"></a>
-<FONT color="green">114</FONT> * for XML, ZIP and PDF files and at the end of<a name="line.114"></a>
-<FONT color="green">115</FONT> * the day we are just guessing.<a name="line.115"></a>
-<FONT color="green">116</FONT> *<a name="line.116"></a>
-<FONT color="green">117</FONT> * @param content the data to be examined<a name="line.117"></a>
-<FONT color="green">118</FONT> * @return true if this is an encrypted file<a name="line.118"></a>
-<FONT color="green">119</FONT> * @exception IOException unable to read the content<a name="line.119"></a>
-<FONT color="green">120</FONT> */<a name="line.120"></a>
-<FONT color="green">121</FONT> private boolean isEncrypted( byte[] content )<a name="line.121"></a>
-<FONT color="green">122</FONT> throws IOException<a name="line.122"></a>
-<FONT color="green">123</FONT> {<a name="line.123"></a>
-<FONT color="green">124</FONT> if( content.length == 0 )<a name="line.124"></a>
-<FONT color="green">125</FONT> {<a name="line.125"></a>
-<FONT color="green">126</FONT> return false;<a name="line.126"></a>
-<FONT color="green">127</FONT> }<a name="line.127"></a>
-<FONT color="green">128</FONT> else if( ( content.length % 8 ) != 0 )<a name="line.128"></a>
-<FONT color="green">129</FONT> {<a name="line.129"></a>
-<FONT color="green">130</FONT> // the block length is 8 bytes - if the length<a name="line.130"></a>
-<FONT color="green">131</FONT> // is not a multipe of 8 then the content was<a name="line.131"></a>
-<FONT color="green">132</FONT> // definitely not encrypted<a name="line.132"></a>
-<FONT color="green">133</FONT> return false;<a name="line.133"></a>
-<FONT color="green">134</FONT> }<a name="line.134"></a>
-<FONT color="green">135</FONT> else if( this.isPDF(content) )<a name="line.135"></a>
-<FONT color="green">136</FONT> {<a name="line.136"></a>
-<FONT color="green">137</FONT> return false;<a name="line.137"></a>
-<FONT color="green">138</FONT> }<a name="line.138"></a>
-<FONT color="green">139</FONT> else if( this.isXML(content) )<a name="line.139"></a>
-<FONT color="green">140</FONT> {<a name="line.140"></a>
-<FONT color="green">141</FONT> return false;<a name="line.141"></a>
-<FONT color="green">142</FONT> }<a name="line.142"></a>
-<FONT color="green">143</FONT> else if( this.isZip(content) )<a name="line.143"></a>
-<FONT color="green">144</FONT> {<a name="line.144"></a>
-<FONT color="green">145</FONT> return false;<a name="line.145"></a>
-<FONT color="green">146</FONT> }<a name="line.146"></a>
-<FONT color="green">147</FONT> else if( this.isUtf16Text(content) )<a name="line.147"></a>
-<FONT color="green">148</FONT> {<a name="line.148"></a>
-<FONT color="green">149</FONT> return false;<a name="line.149"></a>
-<FONT color="green">150</FONT> }<a name="line.150"></a>
-<FONT color="green">151</FONT> else<a name="line.151"></a>
-<FONT color="green">152</FONT> {<a name="line.152"></a>
-<FONT color="green">153</FONT> for( int i=0; i<content.length; i++ )<a name="line.153"></a>
-<FONT color="green">154</FONT> {<a name="line.154"></a>
-<FONT color="green">155</FONT> // do we have control characters in it?<a name="line.155"></a>
-<FONT color="green">156</FONT> <a name="line.156"></a>
-<FONT color="green">157</FONT> char ch = (char) content[i];<a name="line.157"></a>
-<FONT color="green">158</FONT> <a name="line.158"></a>
-<FONT color="green">159</FONT> if( this.isAsciiControl(ch) )<a name="line.159"></a>
-<FONT color="green">160</FONT> {<a name="line.160"></a>
-<FONT color="green">161</FONT> return true;<a name="line.161"></a>
-<FONT color="green">162</FONT> }<a name="line.162"></a>
-<FONT color="green">163</FONT> }<a name="line.163"></a>
-<FONT color="green">164</FONT> <a name="line.164"></a>
-<FONT color="green">165</FONT> return false;<a name="line.165"></a>
-<FONT color="green">166</FONT> }<a name="line.166"></a>
-<FONT color="green">167</FONT> }<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> * Pumps the input stream to the output stream.<a name="line.170"></a>
-<FONT color="green">171</FONT> *<a name="line.171"></a>
-<FONT color="green">172</FONT> * @param is the source input stream<a name="line.172"></a>
-<FONT color="green">173</FONT> * @param os the target output stream<a name="line.173"></a>
-<FONT color="green">174</FONT> * @return the number of bytes copied<a name="line.174"></a>
-<FONT color="green">175</FONT> * @throws IOException the copying failed<a name="line.175"></a>
-<FONT color="green">176</FONT> */<a name="line.176"></a>
-<FONT color="green">177</FONT> public long copy( InputStream is, OutputStream os )<a name="line.177"></a>
-<FONT color="green">178</FONT> throws IOException<a name="line.178"></a>
-<FONT color="green">179</FONT> {<a name="line.179"></a>
-<FONT color="green">180</FONT> byte[] buf = new byte[1024];<a name="line.180"></a>
-<FONT color="green">181</FONT> int n = 0;<a name="line.181"></a>
-<FONT color="green">182</FONT> long total = 0;<a name="line.182"></a>
-<FONT color="green">183</FONT> <a name="line.183"></a>
-<FONT color="green">184</FONT> while ((n = is.read(buf)) > 0)<a name="line.184"></a>
-<FONT color="green">185</FONT> {<a name="line.185"></a>
-<FONT color="green">186</FONT> os.write(buf, 0, n);<a name="line.186"></a>
-<FONT color="green">187</FONT> total += n;<a name="line.187"></a>
-<FONT color="green">188</FONT> }<a name="line.188"></a>
-<FONT color="green">189</FONT> <a name="line.189"></a>
-<FONT color="green">190</FONT> is.close();<a name="line.190"></a>
-<FONT color="green">191</FONT> os.flush();<a name="line.191"></a>
-<FONT color="green">192</FONT> os.close();<a name="line.192"></a>
-<FONT color="green">193</FONT> <a name="line.193"></a>
-<FONT color="green">194</FONT> return total;<a name="line.194"></a>
-<FONT color="green">195</FONT> }<a name="line.195"></a>
-<FONT color="green">196</FONT> <a name="line.196"></a>
-<FONT color="green">197</FONT> /**<a name="line.197"></a>
-<FONT color="green">198</FONT> * Count the number of occurences for the given value<a name="line.198"></a>
-<FONT color="green">199</FONT> * @param content the content to examine<a name="line.199"></a>
-<FONT color="green">200</FONT> * @param value the value to look fo<a name="line.200"></a>
-<FONT color="green">201</FONT> * @return the number of matches<a name="line.201"></a>
-<FONT color="green">202</FONT> */<a name="line.202"></a>
-<FONT color="green">203</FONT> private int count( byte[] content, byte value )<a name="line.203"></a>
-<FONT color="green">204</FONT> {<a name="line.204"></a>
-<FONT color="green">205</FONT> int result = 0;<a name="line.205"></a>
-<FONT color="green">206</FONT> <a name="line.206"></a>
-<FONT color="green">207</FONT> for( int i=0; i<content.length; i++ )<a name="line.207"></a>
-<FONT color="green">208</FONT> {<a name="line.208"></a>
-<FONT color="green">209</FONT> if( content[i] == value )<a name="line.209"></a>
-<FONT color="green">210</FONT> {<a name="line.210"></a>
-<FONT color="green">211</FONT> result++;<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> return result;<a name="line.215"></a>
-<FONT color="green">216</FONT> }<a name="line.216"></a>
-<FONT color="green">217</FONT> <a name="line.217"></a>
-<FONT color="green">218</FONT> /**<a name="line.218"></a>
-<FONT color="green">219</FONT> * Detect the BOM of an UTF-16 (mandatory) or UTF-8 document (optional)<a name="line.219"></a>
-<FONT color="green">220</FONT> * @param content the content to examine<a name="line.220"></a>
-<FONT color="green">221</FONT> * @return true if the content contains a BOM<a name="line.221"></a>
-<FONT color="green">222</FONT> */<a name="line.222"></a>
-<FONT color="green">223</FONT> private boolean hasByteOrderMark( byte[] content )<a name="line.223"></a>
-<FONT color="green">224</FONT> {<a name="line.224"></a>
-<FONT color="green">225</FONT> if( ( (content[0] == 0xFF) && (content[1] == 0xFF) ) ||<a name="line.225"></a>
-<FONT color="green">226</FONT> ( (content[0] == 0xFF) && (content[1] == 0xFF) ) )<a name="line.226"></a>
-<FONT color="green">227</FONT> {<a name="line.227"></a>
-<FONT color="green">228</FONT> return true;<a name="line.228"></a>
-<FONT color="green">229</FONT> }<a name="line.229"></a>
-<FONT color="green">230</FONT> else<a name="line.230"></a>
-<FONT color="green">231</FONT> {<a name="line.231"></a>
-<FONT color="green">232</FONT> return false;<a name="line.232"></a>
-<FONT color="green">233</FONT> }<a name="line.233"></a>
-<FONT color="green">234</FONT> }<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> * Check this is a UTF-16 text document.<a name="line.237"></a>
-<FONT color="green">238</FONT> *<a name="line.238"></a>
-<FONT color="green">239</FONT> * @param content the content to examine<a name="line.239"></a>
-<FONT color="green">240</FONT> * @return true if it is a XML document<a name="line.240"></a>
-<FONT color="green">241</FONT> * @throws IOException unable to read the content<a name="line.241"></a>
-<FONT color="green">242</FONT> */<a name="line.242"></a>
-<FONT color="green">243</FONT> private boolean isUtf16Text( byte[] content ) throws IOException<a name="line.243"></a>
-<FONT color="green">244</FONT> {<a name="line.244"></a>
-<FONT color="green">245</FONT> if( content.length < 2 )<a name="line.245"></a>
-<FONT color="green">246</FONT> {<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> <a name="line.249"></a>
-<FONT color="green">250</FONT> if( this.hasByteOrderMark( content ) )<a name="line.250"></a>
-<FONT color="green">251</FONT> {<a name="line.251"></a>
-<FONT color="green">252</FONT> // we should have plenty of 0x00 in a text file<a name="line.252"></a>
-<FONT color="green">253</FONT> <a name="line.253"></a>
-<FONT color="green">254</FONT> int estimate = (content.length-2)/3;<a name="line.254"></a>
-<FONT color="green">255</FONT> <a name="line.255"></a>
-<FONT color="green">256</FONT> if( this.count(content,(byte)0) > estimate )<a name="line.256"></a>
-<FONT color="green">257</FONT> {<a name="line.257"></a>
-<FONT color="green">258</FONT> return true;<a name="line.258"></a>
-<FONT color="green">259</FONT> }<a name="line.259"></a>
-<FONT color="green">260</FONT> }<a name="line.260"></a>
-<FONT color="green">261</FONT> <a name="line.261"></a>
-<FONT color="green">262</FONT> return false;<a name="line.262"></a>
-<FONT color="green">263</FONT> }<a name="line.263"></a>
-<FONT color="green">264</FONT> <a name="line.264"></a>
-<FONT color="green">265</FONT> /**<a name="line.265"></a>
-<FONT color="green">266</FONT> * Check various encondings to determine if "<?xml"<a name="line.266"></a>
-<FONT color="green">267</FONT> * and "?>" appears in the data.<a name="line.267"></a>
-<FONT color="green">268</FONT> *<a name="line.268"></a>
-<FONT color="green">269</FONT> * @param content the content to examine<a name="line.269"></a>
-<FONT color="green">270</FONT> * @return true if it is a XML document<a name="line.270"></a>
-<FONT color="green">271</FONT> * @throws IOException unable to read the content<a name="line.271"></a>
-<FONT color="green">272</FONT> */<a name="line.272"></a>
-<FONT color="green">273</FONT> private boolean isXML( byte[] content ) throws IOException<a name="line.273"></a>
-<FONT color="green">274</FONT> {<a name="line.274"></a>
-<FONT color="green">275</FONT> if( content.length < 3 )<a name="line.275"></a>
-<FONT color="green">276</FONT> {<a name="line.276"></a>
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-<FONT color="green">294</FONT> <a name="line.294"></a>
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-<FONT color="green">359</FONT> <a name="line.359"></a>
-<FONT color="green">360</FONT> /**<a name="line.360"></a>
-<FONT color="green">361</FONT> * Is this an ASCII control character?<a name="line.361"></a>
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-<FONT color="green">375</FONT> }<a name="line.375"></a>
-<FONT color="green">376</FONT> }<a name="line.376"></a>
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
+<html lang="en">
+<head>
+<title>Source code</title>
+<link rel="stylesheet" type="text/css" href="../../../../../../stylesheet.css" title="Style">
+</head>
+<body>
+<div class="sourceContainer">
+<pre><span class="sourceLineNo">001</span>package org.apache.fulcrum.jce.crypto;<a name="line.1"></a>
+<span class="sourceLineNo">002</span><a name="line.2"></a>
+<span class="sourceLineNo">003</span>/*<a name="line.3"></a>
+<span class="sourceLineNo">004</span> * Licensed to the Apache Software Foundation (ASF) under one<a name="line.4"></a>
+<span class="sourceLineNo">005</span> * or more contributor license agreements. See the NOTICE file<a name="line.5"></a>
+<span class="sourceLineNo">006</span> * distributed with this work for additional information<a name="line.6"></a>
+<span class="sourceLineNo">007</span> * regarding copyright ownership. The ASF licenses this file<a name="line.7"></a>
+<span class="sourceLineNo">008</span> * to you under the Apache License, Version 2.0 (the<a name="line.8"></a>
+<span class="sourceLineNo">009</span> * "License"); you may not use this file except in compliance<a name="line.9"></a>
+<span class="sourceLineNo">010</span> * with the License. You may obtain a copy of the License at<a name="line.10"></a>
+<span class="sourceLineNo">011</span> *<a name="line.11"></a>
+<span class="sourceLineNo">012</span> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.12"></a>
+<span class="sourceLineNo">013</span> *<a name="line.13"></a>
+<span class="sourceLineNo">014</span> * Unless required by applicable law or agreed to in writing,<a name="line.14"></a>
+<span class="sourceLineNo">015</span> * software distributed under the License is distributed on an<a name="line.15"></a>
+<span class="sourceLineNo">016</span> * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY<a name="line.16"></a>
+<span class="sourceLineNo">017</span> * KIND, either express or implied. See the License for the<a name="line.17"></a>
+<span class="sourceLineNo">018</span> * specific language governing permissions and limitations<a name="line.18"></a>
+<span class="sourceLineNo">019</span> * under the License.<a name="line.19"></a>
+<span class="sourceLineNo">020</span> */<a name="line.20"></a>
+<span class="sourceLineNo">021</span><a name="line.21"></a>
+<span class="sourceLineNo">022</span>import java.io.ByteArrayInputStream;<a name="line.22"></a>
+<span class="sourceLineNo">023</span>import java.io.ByteArrayOutputStream;<a name="line.23"></a>
+<span class="sourceLineNo">024</span>import java.io.IOException;<a name="line.24"></a>
+<span class="sourceLineNo">025</span>import java.io.InputStream;<a name="line.25"></a>
+<span class="sourceLineNo">026</span>import java.io.OutputStream;<a name="line.26"></a>
+<span class="sourceLineNo">027</span>import java.security.GeneralSecurityException;<a name="line.27"></a>
+<span class="sourceLineNo">028</span><a name="line.28"></a>
+<span class="sourceLineNo">029</span><a name="line.29"></a>
+<span class="sourceLineNo">030</span>/**<a name="line.30"></a>
+<span class="sourceLineNo">031</span> * An input stream that determine if the originating input stream<a name="line.31"></a>
+<span class="sourceLineNo">032</span> * was encrypted or not. This magic only works for well-known file<a name="line.32"></a>
+<span class="sourceLineNo">033</span> * types though.<a name="line.33"></a>
+<span class="sourceLineNo">034</span> *<a name="line.34"></a>
+<span class="sourceLineNo">035</span> * @author <a href="mailto:siegfried.goeschl@it20one.at">Siegfried Goeschl</a><a name="line.35"></a>
+<span class="sourceLineNo">036</span> */<a name="line.36"></a>
+<span class="sourceLineNo">037</span>public class SmartDecryptingInputStream extends ByteArrayInputStream<a name="line.37"></a>
+<span class="sourceLineNo">038</span>{<a name="line.38"></a>
+<span class="sourceLineNo">039</span> /** The encodings to be checked for XML */<a name="line.39"></a>
+<span class="sourceLineNo">040</span> private static final String[] ENCODINGS = { "ISO-8859-1", "UTF-8", "UTF-16" };<a name="line.40"></a>
+<span class="sourceLineNo">041</span><a name="line.41"></a>
+<span class="sourceLineNo">042</span> /**<a name="line.42"></a>
+<span class="sourceLineNo">043</span> * Constructor<a name="line.43"></a>
+<span class="sourceLineNo">044</span> *<a name="line.44"></a>
+<span class="sourceLineNo">045</span> * @param cryptoStreamFactory the CryptoStreamFactory for creating a cipher stream<a name="line.45"></a>
+<span class="sourceLineNo">046</span> * @param is the input stream to be decrypted<a name="line.46"></a>
+<span class="sourceLineNo">047</span> * @throws IOException if file not found<a name="line.47"></a>
+<span class="sourceLineNo">048</span> * @throws GeneralSecurityException if security check fails<a name="line.48"></a>
+<span class="sourceLineNo">049</span> */<a name="line.49"></a>
+<span class="sourceLineNo">050</span> public SmartDecryptingInputStream(<a name="line.50"></a>
+<span class="sourceLineNo">051</span> CryptoStreamFactory cryptoStreamFactory,<a name="line.51"></a>
+<span class="sourceLineNo">052</span> InputStream is )<a name="line.52"></a>
+<span class="sourceLineNo">053</span> throws IOException, GeneralSecurityException<a name="line.53"></a>
+<span class="sourceLineNo">054</span> {<a name="line.54"></a>
+<span class="sourceLineNo">055</span> this( cryptoStreamFactory, is, null );<a name="line.55"></a>
+<span class="sourceLineNo">056</span> }<a name="line.56"></a>
+<span class="sourceLineNo">057</span><a name="line.57"></a>
+<span class="sourceLineNo">058</span> /**<a name="line.58"></a>
+<span class="sourceLineNo">059</span> * Constructor<a name="line.59"></a>
+<span class="sourceLineNo">060</span> *<a name="line.60"></a>
+<span class="sourceLineNo">061</span> * @param cryptoStreamFactory the CryptoStreamFactory for creating a cipher stream<a name="line.61"></a>
+<span class="sourceLineNo">062</span> * @param is the input stream to be decrypted<a name="line.62"></a>
+<span class="sourceLineNo">063</span> * @param password the password for decryption<a name="line.63"></a>
+<span class="sourceLineNo">064</span> * <a name="line.64"></a>
+<span class="sourceLineNo">065</span> * @throws IOException if file not found<a name="line.65"></a>
+<span class="sourceLineNo">066</span> * @throws GeneralSecurityException if security check fails <a name="line.66"></a>
+<span class="sourceLineNo">067</span> */<a name="line.67"></a>
+<span class="sourceLineNo">068</span> public SmartDecryptingInputStream(<a name="line.68"></a>
+<span class="sourceLineNo">069</span> CryptoStreamFactory cryptoStreamFactory,<a name="line.69"></a>
+<span class="sourceLineNo">070</span> InputStream is,<a name="line.70"></a>
+<span class="sourceLineNo">071</span> char[] password )<a name="line.71"></a>
+<span class="sourceLineNo">072</span> throws IOException, GeneralSecurityException<a name="line.72"></a>
+<span class="sourceLineNo">073</span> {<a name="line.73"></a>
+<span class="sourceLineNo">074</span> super( new byte[0] );<a name="line.74"></a>
+<span class="sourceLineNo">075</span><a name="line.75"></a>
+<span class="sourceLineNo">076</span> byte[] content = null;<a name="line.76"></a>
+<span class="sourceLineNo">077</span> byte[] plain = null;<a name="line.77"></a>
+<span class="sourceLineNo">078</span><a name="line.78"></a>
+<span class="sourceLineNo">079</span> // store the data from the input stream<a name="line.79"></a>
+<span class="sourceLineNo">080</span><a name="line.80"></a>
+<span class="sourceLineNo">081</span> ByteArrayOutputStream baosCipher = new ByteArrayOutputStream();<a name="line.81"></a>
+<span class="sourceLineNo">082</span> ByteArrayOutputStream baosPlain = new ByteArrayOutputStream();<a name="line.82"></a>
+<span class="sourceLineNo">083</span> this.copy( is, baosCipher );<a name="line.83"></a>
+<span class="sourceLineNo">084</span><a name="line.84"></a>
+<span class="sourceLineNo">085</span> content = baosCipher.toByteArray();<a name="line.85"></a>
+<span class="sourceLineNo">086</span> plain = content;<a name="line.86"></a>
+<span class="sourceLineNo">087</span><a name="line.87"></a>
+<span class="sourceLineNo">088</span> if( this.isEncrypted(content) == true )<a name="line.88"></a>
+<span class="sourceLineNo">089</span> {<a name="line.89"></a>
+<span class="sourceLineNo">090</span> InputStream cis = null;<a name="line.90"></a>
+<span class="sourceLineNo">091</span> ByteArrayInputStream bais = new ByteArrayInputStream(content);<a name="line.91"></a>
+<span class="sourceLineNo">092</span><a name="line.92"></a>
+<span class="sourceLineNo">093</span> if( ( password != null ) && ( password.length > 0 ) )<a name="line.93"></a>
+<span class="sourceLineNo">094</span> {<a name="line.94"></a>
+<span class="sourceLineNo">095</span> cis = cryptoStreamFactory.getInputStream( bais, password );<a name="line.95"></a>
+<span class="sourceLineNo">096</span> }<a name="line.96"></a>
+<span class="sourceLineNo">097</span> else<a name="line.97"></a>
+<span class="sourceLineNo">098</span> {<a name="line.98"></a>
+<span class="sourceLineNo">099</span> cis = cryptoStreamFactory.getInputStream( bais );<a name="line.99"></a>
+<span class="sourceLineNo">100</span> }<a name="line.100"></a>
+<span class="sourceLineNo">101</span><a name="line.101"></a>
+<span class="sourceLineNo">102</span> copy( cis, baosPlain );<a name="line.102"></a>
+<span class="sourceLineNo">103</span> plain = baosPlain.toByteArray();<a name="line.103"></a>
+<span class="sourceLineNo">104</span> }<a name="line.104"></a>
+<span class="sourceLineNo">105</span><a name="line.105"></a>
+<span class="sourceLineNo">106</span> // initialize the inherited instance<a name="line.106"></a>
+<span class="sourceLineNo">107</span><a name="line.107"></a>
+<span class="sourceLineNo">108</span> if( plain != null )<a name="line.108"></a>
+<span class="sourceLineNo">109</span> {<a name="line.109"></a>
+<span class="sourceLineNo">110</span> this.buf = plain;<a name="line.110"></a>
+<span class="sourceLineNo">111</span> this.pos = 0;<a name="line.111"></a>
+<span class="sourceLineNo">112</span> this.count = buf.length;<a name="line.112"></a>
+<span class="sourceLineNo">113</span> }<a name="line.113"></a>
+<span class="sourceLineNo">114</span> }<a name="line.114"></a>
+<span class="sourceLineNo">115</span><a name="line.115"></a>
+<span class="sourceLineNo">116</span> /**<a name="line.116"></a>
+<span class="sourceLineNo">117</span> * Determine if the content is encrypted. We are<a name="line.117"></a>
+<span class="sourceLineNo">118</span> * using our knowledge about block lenght, check<a name="line.118"></a>
+<span class="sourceLineNo">119</span> * for XML, ZIP and PDF files and at the end of<a name="line.119"></a>
+<span class="sourceLineNo">120</span> * the day we are just guessing.<a name="line.120"></a>
+<span class="sourceLineNo">121</span> *<a name="line.121"></a>
+<span class="sourceLineNo">122</span> * @param content the data to be examined<a name="line.122"></a>
+<span class="sourceLineNo">123</span> * @return true if this is an encrypted file<a name="line.123"></a>
+<span class="sourceLineNo">124</span> * @throws IOException unable to read the content<a name="line.124"></a>
+<span class="sourceLineNo">125</span> */<a name="line.125"></a>
+<span class="sourceLineNo">126</span> private boolean isEncrypted( byte[] content )<a name="line.126"></a>
+<span class="sourceLineNo">127</span> throws IOException<a name="line.127"></a>
+<span class="sourceLineNo">128</span> {<a name="line.128"></a>
+<span class="sourceLineNo">129</span> if( content.length == 0 )<a name="line.129"></a>
+<span class="sourceLineNo">130</span> {<a name="line.130"></a>
+<span class="sourceLineNo">131</span> return false;<a name="line.131"></a>
+<span class="sourceLineNo">132</span> }<a name="line.132"></a>
+<span class="sourceLineNo">133</span> else if( ( content.length % 8 ) != 0 )<a name="line.133"></a>
+<span class="sourceLineNo">134</span> {<a name="line.134"></a>
+<span class="sourceLineNo">135</span> // the block length is 8 bytes - if the length<a name="line.135"></a>
+<span class="sourceLineNo">136</span> // is not a multipe of 8 then the content was<a name="line.136"></a>
+<span class="sourceLineNo">137</span> // definitely not encrypted<a name="line.137"></a>
+<span class="sourceLineNo">138</span> return false;<a name="line.138"></a>
+<span class="sourceLineNo">139</span> }<a name="line.139"></a>
+<span class="sourceLineNo">140</span> else if( this.isPDF(content) )<a name="line.140"></a>
+<span class="sourceLineNo">141</span> {<a name="line.141"></a>
+<span class="sourceLineNo">142</span> return false;<a name="line.142"></a>
+<span class="sourceLineNo">143</span> }<a name="line.143"></a>
+<span class="sourceLineNo">144</span> else if( this.isXML(content) )<a name="line.144"></a>
+<span class="sourceLineNo">145</span> {<a name="line.145"></a>
+<span class="sourceLineNo">146</span> return false;<a name="line.146"></a>
+<span class="sourceLineNo">147</span> }<a name="line.147"></a>
+<span class="sourceLineNo">148</span> else if( this.isZip(content) )<a name="line.148"></a>
+<span class="sourceLineNo">149</span> {<a name="line.149"></a>
+<span class="sourceLineNo">150</span> return false;<a name="line.150"></a>
+<span class="sourceLineNo">151</span> }<a name="line.151"></a>
+<span class="sourceLineNo">152</span> else if( this.isUtf16Text(content) )<a name="line.152"></a>
+<span class="sourceLineNo">153</span> {<a name="line.153"></a>
+<span class="sourceLineNo">154</span> return false;<a name="line.154"></a>
+<span class="sourceLineNo">155</span> }<a name="line.155"></a>
+<span class="sourceLineNo">156</span> else<a name="line.156"></a>
+<span class="sourceLineNo">157</span> {<a name="line.157"></a>
+<span class="sourceLineNo">158</span> for( int i=0; i<content.length; i++ )<a name="line.158"></a>
+<span class="sourceLineNo">159</span> {<a name="line.159"></a>
+<span class="sourceLineNo">160</span> // do we have control characters in it?<a name="line.160"></a>
+<span class="sourceLineNo">161</span><a name="line.161"></a>
+<span class="sourceLineNo">162</span> char ch = (char) content[i];<a name="line.162"></a>
+<span class="sourceLineNo">163</span><a name="line.163"></a>
+<span class="sourceLineNo">164</span> if( this.isAsciiControl(ch) )<a name="line.164"></a>
+<span class="sourceLineNo">165</span> {<a name="line.165"></a>
+<span class="sourceLineNo">166</span> return true;<a name="line.166"></a>
+<span class="sourceLineNo">167</span> }<a name="line.167"></a>
+<span class="sourceLineNo">168</span> }<a name="line.168"></a>
+<span class="sourceLineNo">169</span><a name="line.169"></a>
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+<span class="sourceLineNo">204</span> * @param content the content to examine<a name="line.204"></a>
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+<span class="sourceLineNo">337</span> */<a name="line.337"></a>
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+<span class="sourceLineNo">368</span> * @return true is this in an ASCII character<a name="line.368"></a>
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+<span class="sourceLineNo">377</span> {<a name="line.377"></a>
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+<span class="sourceLineNo">381</span>}<a name="line.381"></a>
@@ -437,6 +447,7 @@
-</PRE>
-</BODY>
-</HTML>
+</pre>
+</div>
+</body>
+</html>
\ No newline at end of file