diff options
Diffstat (limited to 'libjava/java/security/CodeSource.java')
| -rw-r--r-- | libjava/java/security/CodeSource.java | 354 |
1 files changed, 0 insertions, 354 deletions
diff --git a/libjava/java/security/CodeSource.java b/libjava/java/security/CodeSource.java deleted file mode 100644 index b516170281c..00000000000 --- a/libjava/java/security/CodeSource.java +++ /dev/null @@ -1,354 +0,0 @@ -/* CodeSource.java -- Code location and certifcates - Copyright (C) 1998, 2002, 2004 Free Software Foundation, Inc. - -This file is part of GNU Classpath. - -GNU Classpath is free software; you can redistribute it and/or modify -it under the terms of the GNU General Public License as published by -the Free Software Foundation; either version 2, or (at your option) -any later version. - -GNU Classpath is distributed in the hope that it will be useful, but -WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU -General Public License for more details. - -You should have received a copy of the GNU General Public License -along with GNU Classpath; see the file COPYING. If not, write to the -Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA -02110-1301 USA. - -Linking this library statically or dynamically with other modules is -making a combined work based on this library. Thus, the terms and -conditions of the GNU General Public License cover the whole -combination. - -As a special exception, the copyright holders of this library give you -permission to link this library with independent modules to produce an -executable, regardless of the license terms of these independent -modules, and to copy and distribute the resulting executable under -terms of your choice, provided that you also meet, for each linked -independent module, the terms and conditions of the license of that -module. An independent module is a module which is not derived from -or based on this library. If you modify this library, you may extend -this exception to your version of the library, but you are not -obligated to do so. If you do not wish to do so, delete this -exception statement from your version. */ - - -package java.security; - -import java.io.ByteArrayInputStream; -import java.io.IOException; -import java.io.ObjectInputStream; -import java.io.ObjectOutputStream; -import java.io.Serializable; -import java.net.SocketPermission; -import java.net.URL; -// Note that this overrides Certificate in this package. -import java.security.cert.Certificate; -import java.security.cert.CertificateEncodingException; -import java.security.cert.CertificateException; -import java.security.cert.CertificateFactory; -import java.util.Arrays; -import java.util.HashSet; -import java.util.Iterator; - -/** - * This class represents a location from which code is loaded (as - * represented by a URL), and the list of certificates that are used to - * check the signatures of signed code loaded from this source. - * - * @author Aaron M. Renn (arenn@urbanophile.com) - * @author Eric Blake (ebb9@email.byu.edu) - * @since 1.1 - * @status updated to 1.4 - */ -public class CodeSource implements Serializable -{ - /** - * Compatible with JDK 1.1+. - */ - private static final long serialVersionUID = 4977541819976013951L; - - /** - * This is the URL that represents the code base from which code will - * be loaded. - * - * @serial the code location - */ - private final URL location; - - /** The set of certificates for this code base. */ - private transient HashSet certs; - - /** - * This creates a new instance of <code>CodeSource</code> that loads code - * from the specified URL location and which uses the specified certificates - * for verifying signatures. - * - * @param location the location from which code will be loaded - * @param certs the list of certificates - */ - public CodeSource(URL location, Certificate[] certs) - { - this.location = location; - if (certs != null) - this.certs = new HashSet(Arrays.asList(certs)); - } - - /** - * This method returns a hash value for this object. - * - * @return a hash value for this object - */ - public int hashCode() - { - return (location == null ? 0 : location.hashCode()) - ^ (certs == null ? 0 : certs.hashCode()); - } - - /** - * This method tests the specified <code>Object</code> for equality with - * this object. This will be true if and only if the locations are equal - * and the certificate sets are identical (ignoring order). - * - * @param obj the <code>Object</code> to test against - * @return true if the specified object is equal to this one - */ - public boolean equals(Object obj) - { - if (! (obj instanceof CodeSource)) - return false; - CodeSource cs = (CodeSource) obj; - return (certs == null ? cs.certs == null : certs.equals(cs.certs)) - && (location == null ? cs.location == null - : location.equals(cs.location)); - } - - /** - * This method returns the URL specifying the location from which code - * will be loaded under this <code>CodeSource</code>. - * - * @return the code location for this <code>CodeSource</code> - */ - public final URL getLocation() - { - return location; - } - - /** - * This method returns the list of digital certificates that can be used - * to verify the signatures of code loaded under this - * <code>CodeSource</code>. - * - * @return the certifcate list for this <code>CodeSource</code> - */ - public final Certificate[] getCertificates() - { - if (certs == null) - return null; - Certificate[] c = new Certificate[certs.size()]; - certs.toArray(c); - return c; - } - - /** - * This method tests to see if a specified <code>CodeSource</code> is - * implied by this object. Effectively, to meet this test, the specified - * object must have all the certifcates this object has (but may have more), - * and must have a location that is a subset of this object's. In order - * for this object to imply the specified object, the following must be - * true: - * - * <ol> - * <li><em>codesource</em> must not be <code>null</code>.</li> - * <li>If <em>codesource</em> has a certificate list, all of it's - * certificates must be present in the certificate list of this - * code source.</li> - * <li>If this object does not have a <code>null</code> location, then - * the following addtional tests must be passed. - * - * <ol> - * <li><em>codesource</em> must not have a <code>null</code> - * location.</li> - * <li><em>codesource</em>'s location must be equal to this object's - * location, or - * <ul> - * <li><em>codesource</em>'s location protocol, port, and ref (aka, - * anchor) must equal this objects</li> - * <li><em>codesource</em>'s location host must imply this object's - * location host, as determined by contructing - * <code>SocketPermission</code> objects from each with no - * action list and using that classes's <code>implies</code> - * method</li> - * <li>If this object's location file ends with a '/', then the - * specified object's location file must start with this - * object's location file. Otherwise, the specified object's - * location file must start with this object's location file - * with the '/' character appended to it.</li> - * </ul></li> - * </ol></li> - * </ol> - * - * <p>For example, each of these locations imply the location - * "http://java.sun.com/classes/foo.jar":</p> - * - * <pre> - * http: - * http://*.sun.com/classes/* - * http://java.sun.com/classes/- - * http://java.sun.com/classes/foo.jar - * </pre> - * - * <p>Note that the code source with null location and null certificates implies - * all other code sources.</p> - * - * @param cs the <code>CodeSource</code> to test against this object - * @return true if this specified <code>CodeSource</code> is implied - */ - public boolean implies(CodeSource cs) - { - if (cs == null) - return false; - // First check the certificate list. - if (certs != null && (cs.certs == null || ! certs.containsAll(cs.certs))) - return false; - // Next check the location. - if (location == null) - return true; - if (cs.location == null - || ! location.getProtocol().equals(cs.location.getProtocol()) - || (location.getPort() != -1 - && location.getPort() != cs.location.getPort()) - || (location.getRef() != null - && ! location.getRef().equals(cs.location.getRef()))) - return false; - if (location.getHost() != null) - { - String their_host = cs.location.getHost(); - if (their_host == null) - return false; - SocketPermission our_sockperm = - new SocketPermission(location.getHost(), "accept"); - SocketPermission their_sockperm = - new SocketPermission(their_host, "accept"); - if (! our_sockperm.implies(their_sockperm)) - return false; - } - String our_file = location.getFile(); - if (our_file != null) - { - if (! our_file.endsWith("/")) - our_file += "/"; - String their_file = cs.location.getFile(); - if (their_file == null - || ! their_file.startsWith(our_file)) - return false; - } - return true; - } - - /** - * This method returns a <code>String</code> that represents this object. - * The result is in the format <code>"(" + getLocation()</code> followed - * by a space separated list of certificates (or "<no certificates>"), - * followed by <code>")"</code>. - * - * @return a <code>String</code> for this object - */ - public String toString() - { - StringBuffer sb = new StringBuffer("(").append(location); - if (certs == null || certs.isEmpty()) - sb.append(" <no certificates>"); - else - { - Iterator iter = certs.iterator(); - for (int i = certs.size(); --i >= 0; ) - sb.append(' ').append(iter.next()); - } - return sb.append(")").toString(); - } - - /** - * Reads this object from a serialization stream. - * - * @param s the input stream - * @throws IOException if reading fails - * @throws ClassNotFoundException if deserialization fails - * @serialData this reads the location, then expects an int indicating the - * number of certificates. Each certificate is a String type - * followed by an int encoding length, then a byte[] encoding - */ - private void readObject(ObjectInputStream s) - throws IOException, ClassNotFoundException - { - s.defaultReadObject(); - int count = s.readInt(); - certs = new HashSet(); - while (--count >= 0) - { - String type = (String) s.readObject(); - int bytes = s.readInt(); - byte[] encoded = new byte[bytes]; - for (int i = 0; i < bytes; i++) - encoded[i] = s.readByte(); - ByteArrayInputStream stream = new ByteArrayInputStream(encoded); - try - { - CertificateFactory factory = CertificateFactory.getInstance(type); - certs.add(factory.generateCertificate(stream)); - } - catch (CertificateException e) - { - // XXX Should we ignore this certificate? - } - } - } - - /** - * Writes this object to a serialization stream. - * - * @param s the output stream - * @throws IOException if writing fails - * @serialData this writes the location, then writes an int indicating the - * number of certificates. Each certificate is a String type - * followed by an int encoding length, then a byte[] encoding - */ - private void writeObject(ObjectOutputStream s) throws IOException - { - s.defaultWriteObject(); - if (certs == null) - s.writeInt(0); - else - { - int count = certs.size(); - s.writeInt(count); - Iterator iter = certs.iterator(); - while (--count >= 0) - { - Certificate c = (Certificate) iter.next(); - s.writeObject(c.getType()); - byte[] encoded; - try - { - encoded = c.getEncoded(); - } - catch (CertificateEncodingException e) - { - // XXX Should we ignore this certificate? - encoded = null; - } - if (encoded == null) - s.writeInt(0); - else - { - s.writeInt(encoded.length); - for (int i = 0; i < encoded.length; i++) - s.writeByte(encoded[i]); - } - } - } - } -} // class CodeSource |