From 74d8c83f76074d2d0df784cb4a305c586a702d25 Mon Sep 17 00:00:00 2001 From: Thomas Lenz Date: Wed, 9 Mar 2016 13:41:09 +0100 Subject: move moa-common to moa-id-common, because MOA-SPSS becomes a seperate project --- .../at/gv/egovernment/moa/util/Base64Utils.java | 153 +++++++++++++++++++++ 1 file changed, 153 insertions(+) create mode 100644 id/server/moa-id-commons/src/main/java/at/gv/egovernment/moa/util/Base64Utils.java (limited to 'id/server/moa-id-commons/src/main/java/at/gv/egovernment/moa/util/Base64Utils.java') diff --git a/id/server/moa-id-commons/src/main/java/at/gv/egovernment/moa/util/Base64Utils.java b/id/server/moa-id-commons/src/main/java/at/gv/egovernment/moa/util/Base64Utils.java new file mode 100644 index 000000000..66bf50316 --- /dev/null +++ b/id/server/moa-id-commons/src/main/java/at/gv/egovernment/moa/util/Base64Utils.java @@ -0,0 +1,153 @@ +/* + * Copyright 2003 Federal Chancellery Austria + * MOA-ID has been developed in a cooperation between BRZ, the Federal + * Chancellery Austria - ICT staff unit, and Graz University of Technology. + * + * Licensed under the EUPL, Version 1.1 or - as soon they will be approved by + * the European Commission - subsequent versions of the EUPL (the "Licence"); + * You may not use this work except in compliance with the Licence. + * You may obtain a copy of the Licence at: + * http://www.osor.eu/eupl/ + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the Licence is distributed on an "AS IS" basis, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the Licence for the specific language governing permissions and + * limitations under the Licence. + * + * This product combines work with different licenses. See the "NOTICE" text + * file for details on the various modules and licenses. + * The "NOTICE" text file is part of the distribution. Any derivative works + * that you distribute must include a readable copy of the "NOTICE" text file. + */ + + +package at.gv.egovernment.moa.util; + +import java.io.ByteArrayInputStream; +import java.io.ByteArrayOutputStream; +import java.io.IOException; +import java.io.InputStream; +import java.io.UnsupportedEncodingException; + +import iaik.utils.Base64InputStream; +import iaik.utils.Base64OutputStream; + +/** + * Utitility functions for encoding/decoding Base64 strings. + * + * @author Patrick Peck + * @version $Id$ + */ +public class Base64Utils { + + /** + * Read the bytes encoded in a Base64 encoded String. + * + * @param base64String The String containing the Base64 encoded + * bytes. + * @param ignoreInvalidChars Whether to ignore invalid Base64 characters. + * @return byte[] The raw bytes contained in the base64String. + * @throws IOException Failed to read the Base64 data. + */ + public static byte[] decode(String base64String, boolean ignoreInvalidChars, String encoding) + throws IOException { + + Base64InputStream in = + new Base64InputStream( + new ByteArrayInputStream(base64String.getBytes(encoding)), + ignoreInvalidChars); + ByteArrayOutputStream out = new ByteArrayOutputStream(); + byte[] bytes = new byte[256]; + int bytesRead; + + while ((bytesRead = in.read(bytes)) > 0) { + out.write(bytes, 0, bytesRead); + } + in.close(); + + return out.toByteArray(); + } + + public static byte[] decode(String base64String, boolean ignoreInvalidChars) throws IOException { + return decode(base64String, ignoreInvalidChars, "UTF-8"); + } + + /** + * Read the bytes encoded in a Base64 encoded String and provide + * them via an InputStream. + * + * @param base64String The String containing the Base64 encoded + * bytes. + * @param ignoreInvalidChars Whether to ignore invalid Base64 characters. + * @return The InputStream from which the binary content of the + * base64String can be read. + */ + public static InputStream decodeToStream( + String base64String, + boolean ignoreInvalidChars, + String encoding) { + + try { + ByteArrayInputStream bin = + new ByteArrayInputStream(base64String.getBytes(encoding)); + Base64InputStream in = new Base64InputStream(bin, ignoreInvalidChars); + + return in; + } catch (UnsupportedEncodingException e) { + // cannot occur, since UTF-8 is required to be supported by every JRE + return null; + } + } + + public static InputStream decodeToStream( + String base64String, + boolean ignoreInvalidChars) { + return decodeToStream(base64String, ignoreInvalidChars, "UTF-8"); + + } + + /** + * Convert a byte array to a Base64 encoded String. + * + * @param bytes The bytes to encode. + * @return String The Base64 encoded representation of the bytes. + * @throws IOException Failed to write the bytes as Base64 data. + */ + public static String encode(byte[] bytes) throws IOException { + return encode(new ByteArrayInputStream(bytes), "UTF-8"); + } + + public static String encode(byte[] bytes, String encoding) throws IOException { + return encode(new ByteArrayInputStream(bytes), encoding); + } + + public static String encode(InputStream inputStream) throws IOException { + return encode(inputStream, "UTF-8"); + } + /** + * Convert the data contained in the given stream to a Base64 encoded + * String. + * + * @param inputStream The stream containing the data to encode. + * @return The Base64 encoded data of inputStream, as a + * String. + * @throws IOException Failed to convert the data in the stream. + */ + public static String encode(InputStream inputStream, String encoding) throws IOException { + ByteArrayOutputStream byteStream = new ByteArrayOutputStream(); + Base64OutputStream base64Stream = new Base64OutputStream(byteStream, "\n".getBytes()); + byte[] bytes = new byte[256]; + int bytesRead; + + while ((bytesRead = inputStream.read(bytes)) > 0) { + base64Stream.write(bytes, 0, bytesRead); + } + base64Stream.flush(); + base64Stream.close(); + inputStream.close(); + + return byteStream.toString(encoding); + } + +} -- cgit v1.2.3