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author | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
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committer | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
commit | 554fd8c5195424bdbcabf5de30fdc183aba391bd (patch) | |
tree | 976dc5ab7fddf506dadce60ae936f43f58787092 /libjava/classpath/gnu/java/security/der/DERValue.java | |
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Diffstat (limited to 'libjava/classpath/gnu/java/security/der/DERValue.java')
-rw-r--r-- | libjava/classpath/gnu/java/security/der/DERValue.java | 189 |
1 files changed, 189 insertions, 0 deletions
diff --git a/libjava/classpath/gnu/java/security/der/DERValue.java b/libjava/classpath/gnu/java/security/der/DERValue.java new file mode 100644 index 000000000..2cbe34573 --- /dev/null +++ b/libjava/classpath/gnu/java/security/der/DERValue.java @@ -0,0 +1,189 @@ +/* DERValue.java -- a value read or written to a DER encoding. + Copyright (C) 2003 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 gnu.java.security.der; + +import gnu.java.security.x509.Util; + +import java.io.ByteArrayOutputStream; +import java.io.IOException; + +public class DERValue implements DER +{ + + // Fields. + // ------------------------------------------------------------------------ + + private final int tagClass; + private final boolean constructed; + private final int tag; + private int length; + private final Object value; + private byte[] encoded; + + // Constructor. + // ------------------------------------------------------------------------ + + public DERValue(int tag, int length, Object value, byte[] encoded) + { + tagClass = tag & 0xC0; + this.tag = tag & 0x1F; + constructed = (tag & CONSTRUCTED) == CONSTRUCTED; + this.length = length; + this.value = value; + if (encoded != null) + this.encoded = (byte[]) encoded.clone(); + } + + public DERValue(int tag, Object value) + { + this(tag, 0, value, null); + } + + // Instance methods. + // ------------------------------------------------------------------------ + + public int getExternalTag() + { + return tagClass | tag | (constructed ? 0x20 : 0x00); + } + + public int getTag() + { + return tag; + } + + public int getTagClass() + { + return tagClass; + } + + public boolean isConstructed() + { + return constructed; + } + + public int getLength() + { + if (encoded == null) + { + try + { + ByteArrayOutputStream out = new ByteArrayOutputStream(); + length = DERWriter.write(out, this); + encoded = out.toByteArray(); + } + catch (IOException ioe) + { + IllegalArgumentException iae = new IllegalArgumentException (); + iae.initCause (ioe); + throw iae; + } + } + return length; + } + + public Object getValue() + { + return value; + } + + public Object getValueAs (final int derType) throws IOException + { + byte[] encoded = getEncoded (); + encoded[0] = (byte) derType; + return DERReader.read (encoded).getValue (); + } + + public byte[] getEncoded() + { + if (encoded == null) + { + try + { + ByteArrayOutputStream out = new ByteArrayOutputStream(); + length = DERWriter.write(out, this); + encoded = out.toByteArray(); + } + catch (IOException ioe) + { + IllegalArgumentException iae = new IllegalArgumentException (); + iae.initCause (ioe); + throw iae; + } + } + return (byte[]) encoded.clone(); + } + + public int getEncodedLength() + { + if (encoded == null) + { + try + { + ByteArrayOutputStream out = new ByteArrayOutputStream(); + length = DERWriter.write(out, this); + encoded = out.toByteArray(); + } + catch (IOException ioe) + { + IllegalArgumentException iae = new IllegalArgumentException (); + iae.initCause (ioe); + throw iae; + } + } + return encoded.length; + } + + public String toString() + { + String start = "DERValue ( ["; + if (tagClass == DER.UNIVERSAL) + start = start + "UNIVERSAL "; + else if (tagClass == DER.PRIVATE) + start = start + "PRIVATE "; + else if (tagClass == DER.APPLICATION) + start = start + "APPLICATION "; + start = start + tag + "] constructed=" + constructed + ", value="; + if (constructed) + start = start + "\n" + Util.hexDump(getEncoded(), "\t"); + else + start = start + value; + return start + " )"; + } +} |