svn commit: r904860 - in /labs/amber/signature-api/src/main/java/org/apache/labs/amber/signature/signers/rsa: ./ AbstractRsaSha1Key.java

[si...@apache.org]

Author: simonetripodi
Date: Sat Jan 30 19:53:06 2010
New Revision: 904860

URL: http://svn.apache.org/viewvc?rev=904860&view=rev
Log:
first checkin of AbstractRsaSha1Key class

Added:
    labs/amber/signature-api/src/main/java/org/apache/labs/amber/signature/signers/rsa/
    labs/amber/signature-api/src/main/java/org/apache/labs/amber/signature/signers/rsa/AbstractRsaSha1Key.java   (with props)

Added: labs/amber/signature-api/src/main/java/org/apache/labs/amber/signature/signers/rsa/AbstractRsaSha1Key.java
URL: http://svn.apache.org/viewvc/labs/amber/signature-api/src/main/java/org/apache/labs/amber/signature/signers/rsa/AbstractRsaSha1Key.java?rev=904860&view=auto
==============================================================================
--- labs/amber/signature-api/src/main/java/org/apache/labs/amber/signature/signers/rsa/AbstractRsaSha1Key.java (added)
+++ labs/amber/signature-api/src/main/java/org/apache/labs/amber/signature/signers/rsa/AbstractRsaSha1Key.java Sat Jan 30 19:53:06 2010
@@ -0,0 +1,113 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.labs.amber.signature.signers.rsa;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.net.HttpURLConnection;
+import java.net.URL;
+import java.net.URLConnection;
+
+import org.apache.labs.amber.signature.descriptors.HTTPMethod;
+import org.apache.labs.amber.signature.signers.Key;
+import org.apache.labs.amber.signature.signers.SignatureException;
+
+/**
+ * Abstract implementation of a RSA key.
+ *
+ * @version $Id$
+ */
+abstract class AbstractRsaSha1Key implements Key {
+
+    /**
+     * The RSA certificate value.
+     */
+    private final byte[] value;
+
+    /**
+     * Instantiate a new RSA key reading the certificate from the URL.
+     *
+     * @param certificateLocation the certificate from the URL.
+     * @throws SignatureException if any error occurs while reading the
+     *         certificate.
+     */
+    public AbstractRsaSha1Key(URL certificateLocation) throws SignatureException {
+        if (certificateLocation == null) {
+            throw new IllegalArgumentException("Impossible to read a certificate from a null URL");
+        }
+
+        URLConnection urlConnection = null;
+        InputStream input = null;
+
+        try {
+            urlConnection = certificateLocation.openConnection();
+            if (urlConnection instanceof HttpURLConnection) {
+                ((HttpURLConnection) urlConnection).setRequestMethod(HTTPMethod.GET.name());
+            }
+
+            input = urlConnection.getInputStream();
+
+            this.value = this.readCertificate(input);
+        } catch (Exception e) {
+            throw new SignatureException("An error occurred while reading RSA cerificate '"
+                    + certificateLocation
+                    + "', see nested exceptions", e);
+        } finally {
+            if (urlConnection != null && urlConnection instanceof HttpURLConnection) {
+                ((HttpURLConnection) urlConnection).disconnect();
+            }
+
+            if (input != null) {
+                try {
+                    input.close();
+                } catch (IOException e) {
+                    // close quietly
+                }
+            }
+        }
+    }
+
+    /**
+     * Return the byte array certificate value.
+     *
+     * @return the byte array certificate value.
+     */
+    public final byte[] getByteArrayValue() {
+        return this.value;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public final String getValue() {
+        return new String(this.value);
+    }
+
+    /**
+     * Read the certificate and store the value into a returned buffer.
+     *
+     * Subclasses that implement this method don't have to take care about
+     * closing the input stream.
+     *
+     * @param input the certificate input stream.
+     * @return the certificate value stored in he buffer.
+     * @throws SignatureException if any error occurs while reading the
+     *         certificate.
+     */
+    protected abstract byte[] readCertificate(InputStream input) throws SignatureException;
+
+}

Propchange: labs/amber/signature-api/src/main/java/org/apache/labs/amber/signature/signers/rsa/AbstractRsaSha1Key.java
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