| <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.codec;<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> * Provides <a href="http://en.wikipedia.org/wiki/Base64">Base 64</a> encoding and decoding as defined by<a name="line.22"></a> |
| <FONT color="green">023</FONT> * <a href="http://www.ietf.org/rfc/rfc2045.txt">RFC 2045</a>.<a name="line.23"></a> |
| <FONT color="green">024</FONT> * <p/><a name="line.24"></a> |
| <FONT color="green">025</FONT> * This class implements section <cite>6.8. Base64 Content-Transfer-Encoding</cite> from RFC 2045 <cite>Multipurpose<a name="line.25"></a> |
| <FONT color="green">026</FONT> * Internet Mail Extensions (MIME) Part One: Format of Internet Message Bodies</cite> by Freed and Borenstein.<a name="line.26"></a> |
| <FONT color="green">027</FONT> * <p/><a name="line.27"></a> |
| <FONT color="green">028</FONT> * This class was borrowed from Apache Commons Codec SVN repository (rev. 618419) with modifications<a name="line.28"></a> |
| <FONT color="green">029</FONT> * to enable Base64 conversion without a full dependecny on Commons Codec. We didn't want to reinvent the wheel of<a name="line.29"></a> |
| <FONT color="green">030</FONT> * great work they've done, but also didn't want to force every Shiro user to depend on the commons-codec.jar<a name="line.30"></a> |
| <FONT color="green">031</FONT> * <p/><a name="line.31"></a> |
| <FONT color="green">032</FONT> * As per the Apache 2.0 license, the original copyright notice and all author and copyright information have<a name="line.32"></a> |
| <FONT color="green">033</FONT> * remained in tact.<a name="line.33"></a> |
| <FONT color="green">034</FONT> *<a name="line.34"></a> |
| <FONT color="green">035</FONT> * @see <a href="http://en.wikipedia.org/wiki/Base64">Wikipedia: Base 64</a><a name="line.35"></a> |
| <FONT color="green">036</FONT> * @see <a href="http://www.ietf.org/rfc/rfc2045.txt">RFC 2045</a><a name="line.36"></a> |
| <FONT color="green">037</FONT> * @since 0.9<a name="line.37"></a> |
| <FONT color="green">038</FONT> */<a name="line.38"></a> |
| <FONT color="green">039</FONT> public class Base64 {<a name="line.39"></a> |
| <FONT color="green">040</FONT> <a name="line.40"></a> |
| <FONT color="green">041</FONT> /**<a name="line.41"></a> |
| <FONT color="green">042</FONT> * Chunk size per RFC 2045 section 6.8.<a name="line.42"></a> |
| <FONT color="green">043</FONT> * <p/><a name="line.43"></a> |
| <FONT color="green">044</FONT> * The character limit does not count the trailing CRLF, but counts all other characters, including any<a name="line.44"></a> |
| <FONT color="green">045</FONT> * equal signs.<a name="line.45"></a> |
| <FONT color="green">046</FONT> *<a name="line.46"></a> |
| <FONT color="green">047</FONT> * @see <a href="http://www.ietf.org/rfc/rfc2045.txt">RFC 2045 section 6.8</a><a name="line.47"></a> |
| <FONT color="green">048</FONT> */<a name="line.48"></a> |
| <FONT color="green">049</FONT> static final int CHUNK_SIZE = 76;<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> * Chunk separator per RFC 2045 section 2.1.<a name="line.52"></a> |
| <FONT color="green">053</FONT> *<a name="line.53"></a> |
| <FONT color="green">054</FONT> * @see <a href="http://www.ietf.org/rfc/rfc2045.txt">RFC 2045 section 2.1</a><a name="line.54"></a> |
| <FONT color="green">055</FONT> */<a name="line.55"></a> |
| <FONT color="green">056</FONT> static final byte[] CHUNK_SEPARATOR = "\r\n".getBytes();<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> * The base length.<a name="line.59"></a> |
| <FONT color="green">060</FONT> */<a name="line.60"></a> |
| <FONT color="green">061</FONT> private static final int BASELENGTH = 255;<a name="line.61"></a> |
| <FONT color="green">062</FONT> <a name="line.62"></a> |
| <FONT color="green">063</FONT> /**<a name="line.63"></a> |
| <FONT color="green">064</FONT> * Lookup length.<a name="line.64"></a> |
| <FONT color="green">065</FONT> */<a name="line.65"></a> |
| <FONT color="green">066</FONT> private static final int LOOKUPLENGTH = 64;<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> * Used to calculate the number of bits in a byte.<a name="line.69"></a> |
| <FONT color="green">070</FONT> */<a name="line.70"></a> |
| <FONT color="green">071</FONT> private static final int EIGHTBIT = 8;<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> * Used when encoding something which has fewer than 24 bits.<a name="line.74"></a> |
| <FONT color="green">075</FONT> */<a name="line.75"></a> |
| <FONT color="green">076</FONT> private static final int SIXTEENBIT = 16;<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> * Used to determine how many bits data contains.<a name="line.79"></a> |
| <FONT color="green">080</FONT> */<a name="line.80"></a> |
| <FONT color="green">081</FONT> private static final int TWENTYFOURBITGROUP = 24;<a name="line.81"></a> |
| <FONT color="green">082</FONT> <a name="line.82"></a> |
| <FONT color="green">083</FONT> /**<a name="line.83"></a> |
| <FONT color="green">084</FONT> * Used to get the number of Quadruples.<a name="line.84"></a> |
| <FONT color="green">085</FONT> */<a name="line.85"></a> |
| <FONT color="green">086</FONT> private static final int FOURBYTE = 4;<a name="line.86"></a> |
| <FONT color="green">087</FONT> <a name="line.87"></a> |
| <FONT color="green">088</FONT> /**<a name="line.88"></a> |
| <FONT color="green">089</FONT> * Used to test the sign of a byte.<a name="line.89"></a> |
| <FONT color="green">090</FONT> */<a name="line.90"></a> |
| <FONT color="green">091</FONT> private static final int SIGN = -128;<a name="line.91"></a> |
| <FONT color="green">092</FONT> <a name="line.92"></a> |
| <FONT color="green">093</FONT> /**<a name="line.93"></a> |
| <FONT color="green">094</FONT> * Byte used to pad output.<a name="line.94"></a> |
| <FONT color="green">095</FONT> */<a name="line.95"></a> |
| <FONT color="green">096</FONT> private static final byte PAD = (byte) '=';<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> * Contains the Base64 values <code>0</code> through <code>63</code> accessed by using character encodings as<a name="line.99"></a> |
| <FONT color="green">100</FONT> * indices.<a name="line.100"></a> |
| <FONT color="green">101</FONT> * <p/><a name="line.101"></a> |
| <FONT color="green">102</FONT> * <p>For example, <code>base64Alphabet['+']</code> returns <code>62</code>.</p><a name="line.102"></a> |
| <FONT color="green">103</FONT> * <p/><a name="line.103"></a> |
| <FONT color="green">104</FONT> * <p>The value of undefined encodings is <code>-1</code>.</p><a name="line.104"></a> |
| <FONT color="green">105</FONT> */<a name="line.105"></a> |
| <FONT color="green">106</FONT> private static final byte[] base64Alphabet = new byte[BASELENGTH];<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> * <p>Contains the Base64 encodings <code>A</code> through <code>Z</code>, followed by <code>a</code> through<a name="line.109"></a> |
| <FONT color="green">110</FONT> * <code>z</code>, followed by <code>0</code> through <code>9</code>, followed by <code>+</code>, and<a name="line.110"></a> |
| <FONT color="green">111</FONT> * <code>/</code>.</p><a name="line.111"></a> |
| <FONT color="green">112</FONT> * <p/><a name="line.112"></a> |
| <FONT color="green">113</FONT> * <p>This array is accessed by using character values as indices.</p><a name="line.113"></a> |
| <FONT color="green">114</FONT> * <p/><a name="line.114"></a> |
| <FONT color="green">115</FONT> * <p>For example, <code>lookUpBase64Alphabet[62] </code> returns <code>'+'</code>.</p><a name="line.115"></a> |
| <FONT color="green">116</FONT> */<a name="line.116"></a> |
| <FONT color="green">117</FONT> private static final byte[] lookUpBase64Alphabet = new byte[LOOKUPLENGTH];<a name="line.117"></a> |
| <FONT color="green">118</FONT> <a name="line.118"></a> |
| <FONT color="green">119</FONT> // Populating the lookup and character arrays<a name="line.119"></a> |
| <FONT color="green">120</FONT> <a name="line.120"></a> |
| <FONT color="green">121</FONT> static {<a name="line.121"></a> |
| <FONT color="green">122</FONT> for (int i = 0; i < BASELENGTH; i++) {<a name="line.122"></a> |
| <FONT color="green">123</FONT> base64Alphabet[i] = (byte) -1;<a name="line.123"></a> |
| <FONT color="green">124</FONT> }<a name="line.124"></a> |
| <FONT color="green">125</FONT> for (int i = 'Z'; i >= 'A'; i--) {<a name="line.125"></a> |
| <FONT color="green">126</FONT> base64Alphabet[i] = (byte) (i - 'A');<a name="line.126"></a> |
| <FONT color="green">127</FONT> }<a name="line.127"></a> |
| <FONT color="green">128</FONT> for (int i = 'z'; i >= 'a'; i--) {<a name="line.128"></a> |
| <FONT color="green">129</FONT> base64Alphabet[i] = (byte) (i - 'a' + 26);<a name="line.129"></a> |
| <FONT color="green">130</FONT> }<a name="line.130"></a> |
| <FONT color="green">131</FONT> for (int i = '9'; i >= '0'; i--) {<a name="line.131"></a> |
| <FONT color="green">132</FONT> base64Alphabet[i] = (byte) (i - '0' + 52);<a name="line.132"></a> |
| <FONT color="green">133</FONT> }<a name="line.133"></a> |
| <FONT color="green">134</FONT> <a name="line.134"></a> |
| <FONT color="green">135</FONT> base64Alphabet['+'] = 62;<a name="line.135"></a> |
| <FONT color="green">136</FONT> base64Alphabet['/'] = 63;<a name="line.136"></a> |
| <FONT color="green">137</FONT> <a name="line.137"></a> |
| <FONT color="green">138</FONT> for (int i = 0; i <= 25; i++) {<a name="line.138"></a> |
| <FONT color="green">139</FONT> lookUpBase64Alphabet[i] = (byte) ('A' + i);<a name="line.139"></a> |
| <FONT color="green">140</FONT> }<a name="line.140"></a> |
| <FONT color="green">141</FONT> <a name="line.141"></a> |
| <FONT color="green">142</FONT> for (int i = 26, j = 0; i <= 51; i++, j++) {<a name="line.142"></a> |
| <FONT color="green">143</FONT> lookUpBase64Alphabet[i] = (byte) ('a' + j);<a name="line.143"></a> |
| <FONT color="green">144</FONT> }<a name="line.144"></a> |
| <FONT color="green">145</FONT> <a name="line.145"></a> |
| <FONT color="green">146</FONT> for (int i = 52, j = 0; i <= 61; i++, j++) {<a name="line.146"></a> |
| <FONT color="green">147</FONT> lookUpBase64Alphabet[i] = (byte) ('0' + j);<a name="line.147"></a> |
| <FONT color="green">148</FONT> }<a name="line.148"></a> |
| <FONT color="green">149</FONT> <a name="line.149"></a> |
| <FONT color="green">150</FONT> lookUpBase64Alphabet[62] = (byte) '+';<a name="line.150"></a> |
| <FONT color="green">151</FONT> lookUpBase64Alphabet[63] = (byte) '/';<a name="line.151"></a> |
| <FONT color="green">152</FONT> }<a name="line.152"></a> |
| <FONT color="green">153</FONT> <a name="line.153"></a> |
| <FONT color="green">154</FONT> /**<a name="line.154"></a> |
| <FONT color="green">155</FONT> * Returns whether or not the <code>octect</code> is in the base 64 alphabet.<a name="line.155"></a> |
| <FONT color="green">156</FONT> *<a name="line.156"></a> |
| <FONT color="green">157</FONT> * @param octect The value to test<a name="line.157"></a> |
| <FONT color="green">158</FONT> * @return <code>true</code> if the value is defined in the the base 64 alphabet, <code>false</code> otherwise.<a name="line.158"></a> |
| <FONT color="green">159</FONT> */<a name="line.159"></a> |
| <FONT color="green">160</FONT> private static boolean isBase64(byte octect) {<a name="line.160"></a> |
| <FONT color="green">161</FONT> if (octect == PAD) {<a name="line.161"></a> |
| <FONT color="green">162</FONT> return true;<a name="line.162"></a> |
| <FONT color="green">163</FONT> } else //noinspection RedundantIfStatement<a name="line.163"></a> |
| <FONT color="green">164</FONT> if (octect < 0 || base64Alphabet[octect] == -1) {<a name="line.164"></a> |
| <FONT color="green">165</FONT> return false;<a name="line.165"></a> |
| <FONT color="green">166</FONT> } else {<a name="line.166"></a> |
| <FONT color="green">167</FONT> return true;<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> <a name="line.170"></a> |
| <FONT color="green">171</FONT> /**<a name="line.171"></a> |
| <FONT color="green">172</FONT> * Tests a given byte array to see if it contains only valid characters within the Base64 alphabet.<a name="line.172"></a> |
| <FONT color="green">173</FONT> *<a name="line.173"></a> |
| <FONT color="green">174</FONT> * @param arrayOctect byte array to test<a name="line.174"></a> |
| <FONT color="green">175</FONT> * @return <code>true</code> if all bytes are valid characters in the Base64 alphabet or if the byte array is<a name="line.175"></a> |
| <FONT color="green">176</FONT> * empty; false, otherwise<a name="line.176"></a> |
| <FONT color="green">177</FONT> */<a name="line.177"></a> |
| <FONT color="green">178</FONT> public static boolean isBase64(byte[] arrayOctect) {<a name="line.178"></a> |
| <FONT color="green">179</FONT> <a name="line.179"></a> |
| <FONT color="green">180</FONT> arrayOctect = discardWhitespace(arrayOctect);<a name="line.180"></a> |
| <FONT color="green">181</FONT> <a name="line.181"></a> |
| <FONT color="green">182</FONT> int length = arrayOctect.length;<a name="line.182"></a> |
| <FONT color="green">183</FONT> if (length == 0) {<a name="line.183"></a> |
| <FONT color="green">184</FONT> // shouldn't a 0 length array be valid base64 data?<a name="line.184"></a> |
| <FONT color="green">185</FONT> // return false;<a name="line.185"></a> |
| <FONT color="green">186</FONT> return true;<a name="line.186"></a> |
| <FONT color="green">187</FONT> }<a name="line.187"></a> |
| <FONT color="green">188</FONT> for (int i = 0; i < length; i++) {<a name="line.188"></a> |
| <FONT color="green">189</FONT> if (!isBase64(arrayOctect[i])) {<a name="line.189"></a> |
| <FONT color="green">190</FONT> return false;<a name="line.190"></a> |
| <FONT color="green">191</FONT> }<a name="line.191"></a> |
| <FONT color="green">192</FONT> }<a name="line.192"></a> |
| <FONT color="green">193</FONT> return true;<a name="line.193"></a> |
| <FONT color="green">194</FONT> }<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> * Discards any whitespace from a base-64 encoded block.<a name="line.197"></a> |
| <FONT color="green">198</FONT> *<a name="line.198"></a> |
| <FONT color="green">199</FONT> * @param data The base-64 encoded data to discard the whitespace from.<a name="line.199"></a> |
| <FONT color="green">200</FONT> * @return The data, less whitespace (see RFC 2045).<a name="line.200"></a> |
| <FONT color="green">201</FONT> */<a name="line.201"></a> |
| <FONT color="green">202</FONT> static byte[] discardWhitespace(byte[] data) {<a name="line.202"></a> |
| <FONT color="green">203</FONT> byte groomedData[] = new byte[data.length];<a name="line.203"></a> |
| <FONT color="green">204</FONT> int bytesCopied = 0;<a name="line.204"></a> |
| <FONT color="green">205</FONT> <a name="line.205"></a> |
| <FONT color="green">206</FONT> for (byte aByte : data) {<a name="line.206"></a> |
| <FONT color="green">207</FONT> switch (aByte) {<a name="line.207"></a> |
| <FONT color="green">208</FONT> case (byte) ' ':<a name="line.208"></a> |
| <FONT color="green">209</FONT> case (byte) '\n':<a name="line.209"></a> |
| <FONT color="green">210</FONT> case (byte) '\r':<a name="line.210"></a> |
| <FONT color="green">211</FONT> case (byte) '\t':<a name="line.211"></a> |
| <FONT color="green">212</FONT> break;<a name="line.212"></a> |
| <FONT color="green">213</FONT> default:<a name="line.213"></a> |
| <FONT color="green">214</FONT> groomedData[bytesCopied++] = aByte;<a name="line.214"></a> |
| <FONT color="green">215</FONT> }<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> byte packedData[] = new byte[bytesCopied];<a name="line.218"></a> |
| <FONT color="green">219</FONT> <a name="line.219"></a> |
| <FONT color="green">220</FONT> System.arraycopy(groomedData, 0, packedData, 0, bytesCopied);<a name="line.220"></a> |
| <FONT color="green">221</FONT> <a name="line.221"></a> |
| <FONT color="green">222</FONT> return packedData;<a name="line.222"></a> |
| <FONT color="green">223</FONT> }<a name="line.223"></a> |
| <FONT color="green">224</FONT> <a name="line.224"></a> |
| <FONT color="green">225</FONT> /**<a name="line.225"></a> |
| <FONT color="green">226</FONT> * Base64 encodes the specified byte array and then encodes it as a String using Shiro's preferred character<a name="line.226"></a> |
| <FONT color="green">227</FONT> * encoding (UTF-8).<a name="line.227"></a> |
| <FONT color="green">228</FONT> *<a name="line.228"></a> |
| <FONT color="green">229</FONT> * @param bytes the byte array to Base64 encode.<a name="line.229"></a> |
| <FONT color="green">230</FONT> * @return a UTF-8 encoded String of the resulting Base64 encoded byte array.<a name="line.230"></a> |
| <FONT color="green">231</FONT> */<a name="line.231"></a> |
| <FONT color="green">232</FONT> public static String encodeToString(byte[] bytes) {<a name="line.232"></a> |
| <FONT color="green">233</FONT> byte[] encoded = encode(bytes);<a name="line.233"></a> |
| <FONT color="green">234</FONT> return CodecSupport.toString(encoded);<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> /**<a name="line.237"></a> |
| <FONT color="green">238</FONT> * Encodes binary data using the base64 algorithm and chunks the encoded output into 76 character blocks<a name="line.238"></a> |
| <FONT color="green">239</FONT> *<a name="line.239"></a> |
| <FONT color="green">240</FONT> * @param binaryData binary data to encodeToChars<a name="line.240"></a> |
| <FONT color="green">241</FONT> * @return Base64 characters chunked in 76 character blocks<a name="line.241"></a> |
| <FONT color="green">242</FONT> */<a name="line.242"></a> |
| <FONT color="green">243</FONT> public static byte[] encodeChunked(byte[] binaryData) {<a name="line.243"></a> |
| <FONT color="green">244</FONT> return encode(binaryData, true);<a name="line.244"></a> |
| <FONT color="green">245</FONT> }<a name="line.245"></a> |
| <FONT color="green">246</FONT> <a name="line.246"></a> |
| <FONT color="green">247</FONT> /**<a name="line.247"></a> |
| <FONT color="green">248</FONT> * Encodes a byte[] containing binary data, into a byte[] containing characters in the Base64 alphabet.<a name="line.248"></a> |
| <FONT color="green">249</FONT> *<a name="line.249"></a> |
| <FONT color="green">250</FONT> * @param pArray a byte array containing binary data<a name="line.250"></a> |
| <FONT color="green">251</FONT> * @return A byte array containing only Base64 character data<a name="line.251"></a> |
| <FONT color="green">252</FONT> */<a name="line.252"></a> |
| <FONT color="green">253</FONT> public static byte[] encode(byte[] pArray) {<a name="line.253"></a> |
| <FONT color="green">254</FONT> return encode(pArray, false);<a name="line.254"></a> |
| <FONT color="green">255</FONT> }<a name="line.255"></a> |
| <FONT color="green">256</FONT> <a name="line.256"></a> |
| <FONT color="green">257</FONT> /**<a name="line.257"></a> |
| <FONT color="green">258</FONT> * Encodes binary data using the base64 algorithm, optionally chunking the output into 76 character blocks.<a name="line.258"></a> |
| <FONT color="green">259</FONT> *<a name="line.259"></a> |
| <FONT color="green">260</FONT> * @param binaryData Array containing binary data to encodeToChars.<a name="line.260"></a> |
| <FONT color="green">261</FONT> * @param isChunked if <code>true</code> this encoder will chunk the base64 output into 76 character blocks<a name="line.261"></a> |
| <FONT color="green">262</FONT> * @return Base64-encoded data.<a name="line.262"></a> |
| <FONT color="green">263</FONT> * @throws IllegalArgumentException Thrown when the input array needs an output array bigger than {@link Integer#MAX_VALUE}<a name="line.263"></a> |
| <FONT color="green">264</FONT> */<a name="line.264"></a> |
| <FONT color="green">265</FONT> public static byte[] encode(byte[] binaryData, boolean isChunked) {<a name="line.265"></a> |
| <FONT color="green">266</FONT> long binaryDataLength = binaryData.length;<a name="line.266"></a> |
| <FONT color="green">267</FONT> long lengthDataBits = binaryDataLength * EIGHTBIT;<a name="line.267"></a> |
| <FONT color="green">268</FONT> long fewerThan24bits = lengthDataBits % TWENTYFOURBITGROUP;<a name="line.268"></a> |
| <FONT color="green">269</FONT> long tripletCount = lengthDataBits / TWENTYFOURBITGROUP;<a name="line.269"></a> |
| <FONT color="green">270</FONT> long encodedDataLengthLong;<a name="line.270"></a> |
| <FONT color="green">271</FONT> int chunckCount = 0;<a name="line.271"></a> |
| <FONT color="green">272</FONT> <a name="line.272"></a> |
| <FONT color="green">273</FONT> if (fewerThan24bits != 0) {<a name="line.273"></a> |
| <FONT color="green">274</FONT> // data not divisible by 24 bit<a name="line.274"></a> |
| <FONT color="green">275</FONT> encodedDataLengthLong = (tripletCount + 1) * 4;<a name="line.275"></a> |
| <FONT color="green">276</FONT> } else {<a name="line.276"></a> |
| <FONT color="green">277</FONT> // 16 or 8 bit<a name="line.277"></a> |
| <FONT color="green">278</FONT> encodedDataLengthLong = tripletCount * 4;<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> // If the output is to be "chunked" into 76 character sections,<a name="line.281"></a> |
| <FONT color="green">282</FONT> // for compliance with RFC 2045 MIME, then it is important to<a name="line.282"></a> |
| <FONT color="green">283</FONT> // allow for extra length to account for the separator(s)<a name="line.283"></a> |
| <FONT color="green">284</FONT> if (isChunked) {<a name="line.284"></a> |
| <FONT color="green">285</FONT> <a name="line.285"></a> |
| <FONT color="green">286</FONT> chunckCount = (CHUNK_SEPARATOR.length == 0 ? 0 : (int) Math<a name="line.286"></a> |
| <FONT color="green">287</FONT> .ceil((float) encodedDataLengthLong / CHUNK_SIZE));<a name="line.287"></a> |
| <FONT color="green">288</FONT> encodedDataLengthLong += chunckCount * CHUNK_SEPARATOR.length;<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> if (encodedDataLengthLong > Integer.MAX_VALUE) {<a name="line.291"></a> |
| <FONT color="green">292</FONT> throw new IllegalArgumentException(<a name="line.292"></a> |
| <FONT color="green">293</FONT> "Input array too big, output array would be bigger than Integer.MAX_VALUE=" + Integer.MAX_VALUE);<a name="line.293"></a> |
| <FONT color="green">294</FONT> }<a name="line.294"></a> |
| <FONT color="green">295</FONT> int encodedDataLength = (int) encodedDataLengthLong;<a name="line.295"></a> |
| <FONT color="green">296</FONT> byte encodedData[] = new byte[encodedDataLength];<a name="line.296"></a> |
| <FONT color="green">297</FONT> <a name="line.297"></a> |
| <FONT color="green">298</FONT> byte k, l, b1, b2, b3;<a name="line.298"></a> |
| <FONT color="green">299</FONT> <a name="line.299"></a> |
| <FONT color="green">300</FONT> int encodedIndex = 0;<a name="line.300"></a> |
| <FONT color="green">301</FONT> int dataIndex;<a name="line.301"></a> |
| <FONT color="green">302</FONT> int i;<a name="line.302"></a> |
| <FONT color="green">303</FONT> int nextSeparatorIndex = CHUNK_SIZE;<a name="line.303"></a> |
| <FONT color="green">304</FONT> int chunksSoFar = 0;<a name="line.304"></a> |
| <FONT color="green">305</FONT> <a name="line.305"></a> |
| <FONT color="green">306</FONT> // log.debug("number of triplets = " + numberTriplets);<a name="line.306"></a> |
| <FONT color="green">307</FONT> for (i = 0; i < tripletCount; i++) {<a name="line.307"></a> |
| <FONT color="green">308</FONT> dataIndex = i * 3;<a name="line.308"></a> |
| <FONT color="green">309</FONT> b1 = binaryData[dataIndex];<a name="line.309"></a> |
| <FONT color="green">310</FONT> b2 = binaryData[dataIndex + 1];<a name="line.310"></a> |
| <FONT color="green">311</FONT> b3 = binaryData[dataIndex + 2];<a name="line.311"></a> |
| <FONT color="green">312</FONT> <a name="line.312"></a> |
| <FONT color="green">313</FONT> // log.debug("b1= " + b1 +", b2= " + b2 + ", b3= " + b3);<a name="line.313"></a> |
| <FONT color="green">314</FONT> <a name="line.314"></a> |
| <FONT color="green">315</FONT> l = (byte) (b2 & 0x0f);<a name="line.315"></a> |
| <FONT color="green">316</FONT> k = (byte) (b1 & 0x03);<a name="line.316"></a> |
| <FONT color="green">317</FONT> <a name="line.317"></a> |
| <FONT color="green">318</FONT> byte val1 = ((b1 & SIGN) == 0) ? (byte) (b1 >> 2) : (byte) ((b1) >> 2 ^ 0xc0);<a name="line.318"></a> |
| <FONT color="green">319</FONT> byte val2 = ((b2 & SIGN) == 0) ? (byte) (b2 >> 4) : (byte) ((b2) >> 4 ^ 0xf0);<a name="line.319"></a> |
| <FONT color="green">320</FONT> byte val3 = ((b3 & SIGN) == 0) ? (byte) (b3 >> 6) : (byte) ((b3) >> 6 ^ 0xfc);<a name="line.320"></a> |
| <FONT color="green">321</FONT> <a name="line.321"></a> |
| <FONT color="green">322</FONT> encodedData[encodedIndex] = lookUpBase64Alphabet[val1];<a name="line.322"></a> |
| <FONT color="green">323</FONT> // log.debug( "val2 = " + val2 );<a name="line.323"></a> |
| <FONT color="green">324</FONT> // log.debug( "k4 = " + (k<<4) );<a name="line.324"></a> |
| <FONT color="green">325</FONT> // log.debug( "vak = " + (val2 | (k<<4)) );<a name="line.325"></a> |
| <FONT color="green">326</FONT> encodedData[encodedIndex + 1] = lookUpBase64Alphabet[val2 | (k << 4)];<a name="line.326"></a> |
| <FONT color="green">327</FONT> encodedData[encodedIndex + 2] = lookUpBase64Alphabet[(l << 2) | val3];<a name="line.327"></a> |
| <FONT color="green">328</FONT> encodedData[encodedIndex + 3] = lookUpBase64Alphabet[b3 & 0x3f];<a name="line.328"></a> |
| <FONT color="green">329</FONT> <a name="line.329"></a> |
| <FONT color="green">330</FONT> encodedIndex += 4;<a name="line.330"></a> |
| <FONT color="green">331</FONT> <a name="line.331"></a> |
| <FONT color="green">332</FONT> // If we are chunking, let's put a chunk separator down.<a name="line.332"></a> |
| <FONT color="green">333</FONT> if (isChunked) {<a name="line.333"></a> |
| <FONT color="green">334</FONT> // this assumes that CHUNK_SIZE % 4 == 0<a name="line.334"></a> |
| <FONT color="green">335</FONT> if (encodedIndex == nextSeparatorIndex) {<a name="line.335"></a> |
| <FONT color="green">336</FONT> System.arraycopy(CHUNK_SEPARATOR, 0, encodedData, encodedIndex, CHUNK_SEPARATOR.length);<a name="line.336"></a> |
| <FONT color="green">337</FONT> chunksSoFar++;<a name="line.337"></a> |
| <FONT color="green">338</FONT> nextSeparatorIndex = (CHUNK_SIZE * (chunksSoFar + 1)) + (chunksSoFar * CHUNK_SEPARATOR.length);<a name="line.338"></a> |
| <FONT color="green">339</FONT> encodedIndex += CHUNK_SEPARATOR.length;<a name="line.339"></a> |
| <FONT color="green">340</FONT> }<a name="line.340"></a> |
| <FONT color="green">341</FONT> }<a name="line.341"></a> |
| <FONT color="green">342</FONT> }<a name="line.342"></a> |
| <FONT color="green">343</FONT> <a name="line.343"></a> |
| <FONT color="green">344</FONT> // form integral number of 6-bit groups<a name="line.344"></a> |
| <FONT color="green">345</FONT> dataIndex = i * 3;<a name="line.345"></a> |
| <FONT color="green">346</FONT> <a name="line.346"></a> |
| <FONT color="green">347</FONT> if (fewerThan24bits == EIGHTBIT) {<a name="line.347"></a> |
| <FONT color="green">348</FONT> b1 = binaryData[dataIndex];<a name="line.348"></a> |
| <FONT color="green">349</FONT> k = (byte) (b1 & 0x03);<a name="line.349"></a> |
| <FONT color="green">350</FONT> // log.debug("b1=" + b1);<a name="line.350"></a> |
| <FONT color="green">351</FONT> // log.debug("b1<<2 = " + (b1>>2) );<a name="line.351"></a> |
| <FONT color="green">352</FONT> byte val1 = ((b1 & SIGN) == 0) ? (byte) (b1 >> 2) : (byte) ((b1) >> 2 ^ 0xc0);<a name="line.352"></a> |
| <FONT color="green">353</FONT> encodedData[encodedIndex] = lookUpBase64Alphabet[val1];<a name="line.353"></a> |
| <FONT color="green">354</FONT> encodedData[encodedIndex + 1] = lookUpBase64Alphabet[k << 4];<a name="line.354"></a> |
| <FONT color="green">355</FONT> encodedData[encodedIndex + 2] = PAD;<a name="line.355"></a> |
| <FONT color="green">356</FONT> encodedData[encodedIndex + 3] = PAD;<a name="line.356"></a> |
| <FONT color="green">357</FONT> } else if (fewerThan24bits == SIXTEENBIT) {<a name="line.357"></a> |
| <FONT color="green">358</FONT> <a name="line.358"></a> |
| <FONT color="green">359</FONT> b1 = binaryData[dataIndex];<a name="line.359"></a> |
| <FONT color="green">360</FONT> b2 = binaryData[dataIndex + 1];<a name="line.360"></a> |
| <FONT color="green">361</FONT> l = (byte) (b2 & 0x0f);<a name="line.361"></a> |
| <FONT color="green">362</FONT> k = (byte) (b1 & 0x03);<a name="line.362"></a> |
| <FONT color="green">363</FONT> <a name="line.363"></a> |
| <FONT color="green">364</FONT> byte val1 = ((b1 & SIGN) == 0) ? (byte) (b1 >> 2) : (byte) ((b1) >> 2 ^ 0xc0);<a name="line.364"></a> |
| <FONT color="green">365</FONT> byte val2 = ((b2 & SIGN) == 0) ? (byte) (b2 >> 4) : (byte) ((b2) >> 4 ^ 0xf0);<a name="line.365"></a> |
| <FONT color="green">366</FONT> <a name="line.366"></a> |
| <FONT color="green">367</FONT> encodedData[encodedIndex] = lookUpBase64Alphabet[val1];<a name="line.367"></a> |
| <FONT color="green">368</FONT> encodedData[encodedIndex + 1] = lookUpBase64Alphabet[val2 | (k << 4)];<a name="line.368"></a> |
| <FONT color="green">369</FONT> encodedData[encodedIndex + 2] = lookUpBase64Alphabet[l << 2];<a name="line.369"></a> |
| <FONT color="green">370</FONT> encodedData[encodedIndex + 3] = PAD;<a name="line.370"></a> |
| <FONT color="green">371</FONT> }<a name="line.371"></a> |
| <FONT color="green">372</FONT> <a name="line.372"></a> |
| <FONT color="green">373</FONT> if (isChunked) {<a name="line.373"></a> |
| <FONT color="green">374</FONT> // we also add a separator to the end of the final chunk.<a name="line.374"></a> |
| <FONT color="green">375</FONT> if (chunksSoFar < chunckCount) {<a name="line.375"></a> |
| <FONT color="green">376</FONT> System.arraycopy(CHUNK_SEPARATOR, 0, encodedData, encodedDataLength - CHUNK_SEPARATOR.length,<a name="line.376"></a> |
| <FONT color="green">377</FONT> CHUNK_SEPARATOR.length);<a name="line.377"></a> |
| <FONT color="green">378</FONT> }<a name="line.378"></a> |
| <FONT color="green">379</FONT> }<a name="line.379"></a> |
| <FONT color="green">380</FONT> <a name="line.380"></a> |
| <FONT color="green">381</FONT> return encodedData;<a name="line.381"></a> |
| <FONT color="green">382</FONT> }<a name="line.382"></a> |
| <FONT color="green">383</FONT> <a name="line.383"></a> |
| <FONT color="green">384</FONT> /**<a name="line.384"></a> |
| <FONT color="green">385</FONT> * Converts the specified UTF-8 Base64 encoded String and decodes it to a resultant UTF-8 encoded string.<a name="line.385"></a> |
| <FONT color="green">386</FONT> *<a name="line.386"></a> |
| <FONT color="green">387</FONT> * @param base64Encoded a UTF-8 Base64 encoded String<a name="line.387"></a> |
| <FONT color="green">388</FONT> * @return the decoded String, UTF-8 encoded.<a name="line.388"></a> |
| <FONT color="green">389</FONT> */<a name="line.389"></a> |
| <FONT color="green">390</FONT> public static String decodeToString(String base64Encoded) {<a name="line.390"></a> |
| <FONT color="green">391</FONT> byte[] encodedBytes = CodecSupport.toBytes(base64Encoded);<a name="line.391"></a> |
| <FONT color="green">392</FONT> return decodeToString(encodedBytes);<a name="line.392"></a> |
| <FONT color="green">393</FONT> }<a name="line.393"></a> |
| <FONT color="green">394</FONT> <a name="line.394"></a> |
| <FONT color="green">395</FONT> /**<a name="line.395"></a> |
| <FONT color="green">396</FONT> * Decodes the specified Base64 encoded byte array and returns the decoded result as a UTF-8 encoded.<a name="line.396"></a> |
| <FONT color="green">397</FONT> *<a name="line.397"></a> |
| <FONT color="green">398</FONT> * @param base64Encoded a Base64 encoded byte array<a name="line.398"></a> |
| <FONT color="green">399</FONT> * @return the decoded String, UTF-8 encoded.<a name="line.399"></a> |
| <FONT color="green">400</FONT> */<a name="line.400"></a> |
| <FONT color="green">401</FONT> public static String decodeToString(byte[] base64Encoded) {<a name="line.401"></a> |
| <FONT color="green">402</FONT> byte[] decoded = decode(base64Encoded);<a name="line.402"></a> |
| <FONT color="green">403</FONT> return CodecSupport.toString(decoded);<a name="line.403"></a> |
| <FONT color="green">404</FONT> }<a name="line.404"></a> |
| <FONT color="green">405</FONT> <a name="line.405"></a> |
| <FONT color="green">406</FONT> /**<a name="line.406"></a> |
| <FONT color="green">407</FONT> * Converts the specified UTF-8 Base64 encoded String and decodes it to a raw Base64 decoded byte array.<a name="line.407"></a> |
| <FONT color="green">408</FONT> *<a name="line.408"></a> |
| <FONT color="green">409</FONT> * @param base64Encoded a UTF-8 Base64 encoded String<a name="line.409"></a> |
| <FONT color="green">410</FONT> * @return the raw Base64 decoded byte array.<a name="line.410"></a> |
| <FONT color="green">411</FONT> */<a name="line.411"></a> |
| <FONT color="green">412</FONT> public static byte[] decode(String base64Encoded) {<a name="line.412"></a> |
| <FONT color="green">413</FONT> byte[] bytes = CodecSupport.toBytes(base64Encoded);<a name="line.413"></a> |
| <FONT color="green">414</FONT> return decode(bytes);<a name="line.414"></a> |
| <FONT color="green">415</FONT> }<a name="line.415"></a> |
| <FONT color="green">416</FONT> <a name="line.416"></a> |
| <FONT color="green">417</FONT> /**<a name="line.417"></a> |
| <FONT color="green">418</FONT> * Decodes Base64 data into octects<a name="line.418"></a> |
| <FONT color="green">419</FONT> *<a name="line.419"></a> |
| <FONT color="green">420</FONT> * @param base64Data Byte array containing Base64 data<a name="line.420"></a> |
| <FONT color="green">421</FONT> * @return Array containing decoded data.<a name="line.421"></a> |
| <FONT color="green">422</FONT> */<a name="line.422"></a> |
| <FONT color="green">423</FONT> public static byte[] decode(byte[] base64Data) {<a name="line.423"></a> |
| <FONT color="green">424</FONT> // RFC 2045 requires that we discard ALL non-Base64 characters<a name="line.424"></a> |
| <FONT color="green">425</FONT> base64Data = discardNonBase64(base64Data);<a name="line.425"></a> |
| <FONT color="green">426</FONT> <a name="line.426"></a> |
| <FONT color="green">427</FONT> // handle the edge case, so we don't have to worry about it later<a name="line.427"></a> |
| <FONT color="green">428</FONT> if (base64Data.length == 0) {<a name="line.428"></a> |
| <FONT color="green">429</FONT> return new byte[0];<a name="line.429"></a> |
| <FONT color="green">430</FONT> }<a name="line.430"></a> |
| <FONT color="green">431</FONT> <a name="line.431"></a> |
| <FONT color="green">432</FONT> int numberQuadruple = base64Data.length / FOURBYTE;<a name="line.432"></a> |
| <FONT color="green">433</FONT> byte decodedData[];<a name="line.433"></a> |
| <FONT color="green">434</FONT> byte b1, b2, b3, b4, marker0, marker1;<a name="line.434"></a> |
| <FONT color="green">435</FONT> <a name="line.435"></a> |
| <FONT color="green">436</FONT> // Throw away anything not in base64Data<a name="line.436"></a> |
| <FONT color="green">437</FONT> <a name="line.437"></a> |
| <FONT color="green">438</FONT> int encodedIndex = 0;<a name="line.438"></a> |
| <FONT color="green">439</FONT> int dataIndex;<a name="line.439"></a> |
| <FONT color="green">440</FONT> {<a name="line.440"></a> |
| <FONT color="green">441</FONT> // this sizes the output array properly - rlw<a name="line.441"></a> |
| <FONT color="green">442</FONT> int lastData = base64Data.length;<a name="line.442"></a> |
| <FONT color="green">443</FONT> // ignore the '=' padding<a name="line.443"></a> |
| <FONT color="green">444</FONT> while (base64Data[lastData - 1] == PAD) {<a name="line.444"></a> |
| <FONT color="green">445</FONT> if (--lastData == 0) {<a name="line.445"></a> |
| <FONT color="green">446</FONT> return new byte[0];<a name="line.446"></a> |
| <FONT color="green">447</FONT> }<a name="line.447"></a> |
| <FONT color="green">448</FONT> }<a name="line.448"></a> |
| <FONT color="green">449</FONT> decodedData = new byte[lastData - numberQuadruple];<a name="line.449"></a> |
| <FONT color="green">450</FONT> }<a name="line.450"></a> |
| <FONT color="green">451</FONT> <a name="line.451"></a> |
| <FONT color="green">452</FONT> for (int i = 0; i < numberQuadruple; i++) {<a name="line.452"></a> |
| <FONT color="green">453</FONT> dataIndex = i * 4;<a name="line.453"></a> |
| <FONT color="green">454</FONT> marker0 = base64Data[dataIndex + 2];<a name="line.454"></a> |
| <FONT color="green">455</FONT> marker1 = base64Data[dataIndex + 3];<a name="line.455"></a> |
| <FONT color="green">456</FONT> <a name="line.456"></a> |
| <FONT color="green">457</FONT> b1 = base64Alphabet[base64Data[dataIndex]];<a name="line.457"></a> |
| <FONT color="green">458</FONT> b2 = base64Alphabet[base64Data[dataIndex + 1]];<a name="line.458"></a> |
| <FONT color="green">459</FONT> <a name="line.459"></a> |
| <FONT color="green">460</FONT> if (marker0 != PAD && marker1 != PAD) {<a name="line.460"></a> |
| <FONT color="green">461</FONT> // No PAD e.g 3cQl<a name="line.461"></a> |
| <FONT color="green">462</FONT> b3 = base64Alphabet[marker0];<a name="line.462"></a> |
| <FONT color="green">463</FONT> b4 = base64Alphabet[marker1];<a name="line.463"></a> |
| <FONT color="green">464</FONT> <a name="line.464"></a> |
| <FONT color="green">465</FONT> decodedData[encodedIndex] = (byte) (b1 << 2 | b2 >> 4);<a name="line.465"></a> |
| <FONT color="green">466</FONT> decodedData[encodedIndex + 1] = (byte) (((b2 & 0xf) << 4) | ((b3 >> 2) & 0xf));<a name="line.466"></a> |
| <FONT color="green">467</FONT> decodedData[encodedIndex + 2] = (byte) (b3 << 6 | b4);<a name="line.467"></a> |
| <FONT color="green">468</FONT> } else if (marker0 == PAD) {<a name="line.468"></a> |
| <FONT color="green">469</FONT> // Two PAD e.g. 3c[Pad][Pad]<a name="line.469"></a> |
| <FONT color="green">470</FONT> decodedData[encodedIndex] = (byte) (b1 << 2 | b2 >> 4);<a name="line.470"></a> |
| <FONT color="green">471</FONT> } else {<a name="line.471"></a> |
| <FONT color="green">472</FONT> // One PAD e.g. 3cQ[Pad]<a name="line.472"></a> |
| <FONT color="green">473</FONT> b3 = base64Alphabet[marker0];<a name="line.473"></a> |
| <FONT color="green">474</FONT> decodedData[encodedIndex] = (byte) (b1 << 2 | b2 >> 4);<a name="line.474"></a> |
| <FONT color="green">475</FONT> decodedData[encodedIndex + 1] = (byte) (((b2 & 0xf) << 4) | ((b3 >> 2) & 0xf));<a name="line.475"></a> |
| <FONT color="green">476</FONT> }<a name="line.476"></a> |
| <FONT color="green">477</FONT> encodedIndex += 3;<a name="line.477"></a> |
| <FONT color="green">478</FONT> }<a name="line.478"></a> |
| <FONT color="green">479</FONT> return decodedData;<a name="line.479"></a> |
| <FONT color="green">480</FONT> }<a name="line.480"></a> |
| <FONT color="green">481</FONT> <a name="line.481"></a> |
| <FONT color="green">482</FONT> /**<a name="line.482"></a> |
| <FONT color="green">483</FONT> * Discards any characters outside of the base64 alphabet, per the requirements on page 25 of RFC 2045 - "Any<a name="line.483"></a> |
| <FONT color="green">484</FONT> * characters outside of the base64 alphabet are to be ignored in base64 encoded data."<a name="line.484"></a> |
| <FONT color="green">485</FONT> *<a name="line.485"></a> |
| <FONT color="green">486</FONT> * @param data The base-64 encoded data to groom<a name="line.486"></a> |
| <FONT color="green">487</FONT> * @return The data, less non-base64 characters (see RFC 2045).<a name="line.487"></a> |
| <FONT color="green">488</FONT> */<a name="line.488"></a> |
| <FONT color="green">489</FONT> static byte[] discardNonBase64(byte[] data) {<a name="line.489"></a> |
| <FONT color="green">490</FONT> byte groomedData[] = new byte[data.length];<a name="line.490"></a> |
| <FONT color="green">491</FONT> int bytesCopied = 0;<a name="line.491"></a> |
| <FONT color="green">492</FONT> <a name="line.492"></a> |
| <FONT color="green">493</FONT> for (byte aByte : data) {<a name="line.493"></a> |
| <FONT color="green">494</FONT> if (isBase64(aByte)) {<a name="line.494"></a> |
| <FONT color="green">495</FONT> groomedData[bytesCopied++] = aByte;<a name="line.495"></a> |
| <FONT color="green">496</FONT> }<a name="line.496"></a> |
| <FONT color="green">497</FONT> }<a name="line.497"></a> |
| <FONT color="green">498</FONT> <a name="line.498"></a> |
| <FONT color="green">499</FONT> byte packedData[] = new byte[bytesCopied];<a name="line.499"></a> |
| <FONT color="green">500</FONT> <a name="line.500"></a> |
| <FONT color="green">501</FONT> System.arraycopy(groomedData, 0, packedData, 0, bytesCopied);<a name="line.501"></a> |
| <FONT color="green">502</FONT> <a name="line.502"></a> |
| <FONT color="green">503</FONT> return packedData;<a name="line.503"></a> |
| <FONT color="green">504</FONT> }<a name="line.504"></a> |
| <FONT color="green">505</FONT> <a name="line.505"></a> |
| <FONT color="green">506</FONT> }<a name="line.506"></a> |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| </PRE> |
| </BODY> |
| </HTML> |
