| /* |
| * 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. |
| */ |
| |
| /** |
| * @author Vladimir N. Molotkov, Stepan M. Mishura |
| * @version $Revision$ |
| */ |
| |
| package org.apache.harmony.security.asn1; |
| |
| |
| /** |
| * Encodes ASN.1 types with BER (X.690) |
| * |
| * @see <a href="http://asn1.elibel.tm.fr/en/standards/index.htm">ASN.1</a> |
| */ |
| public class BerOutputStream { |
| |
| /** Encoded byte array */ |
| public byte[] encoded; |
| |
| /** current offset */ |
| protected int offset; |
| |
| /** Current encoded length */ |
| public int length; |
| |
| /** Current encoded content */ |
| public Object content; |
| |
| public final void encodeTag(int tag) { |
| encoded[offset++] = (byte) tag; //FIXME long form? |
| |
| if (length > 127) { //long form |
| int eLen = length >> 8; |
| byte numOctets = 1; |
| for (; eLen > 0; eLen = eLen >> 8) { |
| numOctets++; |
| } |
| |
| encoded[offset] = (byte) (numOctets | 0x80); |
| offset++; |
| |
| eLen = length; |
| int numOffset = offset + numOctets - 1; |
| for (int i = 0; i < numOctets; i++, eLen = eLen >> 8) { |
| encoded[numOffset - i] = (byte) eLen; //FIXME long value? |
| } |
| offset += numOctets; |
| } else { //short form |
| encoded[offset++] = (byte) length; |
| } |
| } |
| |
| public void encodeANY() { |
| System.arraycopy(content, 0, encoded, offset, length); |
| offset += length; |
| } |
| |
| public void encodeBitString() { |
| //FIXME check encoding |
| BitString bStr = (BitString) content; |
| encoded[offset] = (byte) bStr.unusedBits; |
| System.arraycopy(bStr.bytes, 0, encoded, offset + 1, length - 1); |
| offset += length; |
| } |
| |
| public void encodeBoolean() { |
| if ((Boolean) content) { |
| encoded[offset] = (byte) 0xFF; |
| } else { |
| encoded[offset] = 0x00; |
| } |
| offset++; |
| } |
| |
| public void encodeChoice(ASN1Choice choice) { |
| throw new RuntimeException("Is not implemented yet"); //FIXME |
| } |
| |
| public void encodeExplicit(ASN1Explicit explicit) { |
| throw new RuntimeException("Is not implemented yet"); //FIXME |
| } |
| |
| public void encodeGeneralizedTime() { |
| System.arraycopy(content, 0, encoded, offset, length); |
| offset += length; |
| } |
| |
| public void encodeUTCTime() { |
| System.arraycopy(content, 0, encoded, offset, length); |
| offset += length; |
| } |
| |
| public void encodeInteger() { |
| System.arraycopy(content, 0, encoded, offset, length); |
| offset += length; |
| } |
| |
| public void encodeOctetString() { |
| System.arraycopy(content, 0, encoded, offset, length); |
| offset += length; |
| } |
| |
| public void encodeOID() { |
| |
| int[] oid = (int[]) content; |
| |
| int oidLen = length; |
| |
| // all subidentifiers except first |
| int elem; |
| for (int i = oid.length - 1; i > 1; i--, oidLen--) { |
| elem = oid[i]; |
| if (elem > 127) { |
| encoded[offset + oidLen - 1] = (byte) (elem & 0x7F); |
| elem = elem >> 7; |
| for (; elem > 0;) { |
| oidLen--; |
| encoded[offset + oidLen - 1] = (byte) (elem | 0x80); |
| elem = elem >> 7; |
| } |
| } else { |
| encoded[offset + oidLen - 1] = (byte) elem; |
| } |
| } |
| |
| // first subidentifier |
| elem = oid[0] * 40 + oid[1]; |
| if (elem > 127) { |
| encoded[offset + oidLen - 1] = (byte) (elem & 0x7F); |
| elem = elem >> 7; |
| for (; elem > 0;) { |
| oidLen--; |
| encoded[offset + oidLen - 1] = (byte) (elem | 0x80); |
| elem = elem >> 7; |
| } |
| } else { |
| encoded[offset + oidLen - 1] = (byte) elem; |
| } |
| |
| offset += length; |
| } |
| |
| public void encodeSequence(ASN1Sequence sequence) { |
| throw new RuntimeException("Is not implemented yet"); //FIXME |
| } |
| |
| public void encodeSequenceOf(ASN1SequenceOf sequenceOf) { |
| throw new RuntimeException("Is not implemented yet"); //FIXME |
| } |
| |
| public void encodeSet(ASN1Set set) { |
| throw new RuntimeException("Is not implemented yet"); //FIXME |
| } |
| |
| public void encodeSetOf(ASN1SetOf setOf) { |
| throw new RuntimeException("Is not implemented yet"); //FIXME |
| } |
| |
| public void encodeString() { |
| System.arraycopy(content, 0, encoded, offset, length); |
| offset += length; |
| } |
| |
| public void getChoiceLength(ASN1Choice choice) { |
| throw new RuntimeException("Is not implemented yet"); //FIXME |
| } |
| |
| public void getExplicitLength(ASN1Explicit sequence) { |
| throw new RuntimeException("Is not implemented yet"); //FIXME |
| } |
| |
| public void getSequenceLength(ASN1Sequence sequence) { |
| throw new RuntimeException("Is not implemented yet"); //FIXME |
| } |
| |
| public void getSequenceOfLength(ASN1SequenceOf sequence) { |
| throw new RuntimeException("Is not implemented yet"); //FIXME |
| } |
| |
| public void getSetLength(ASN1Set set) { |
| throw new RuntimeException("Is not implemented yet"); //FIXME |
| } |
| |
| public void getSetOfLength(ASN1SetOf setOf) { |
| throw new RuntimeException("Is not implemented yet"); //FIXME |
| } |
| } |