| /* This Source Code Form is subject to the terms of the Mozilla Public |
| * License, v. 2.0. If a copy of the MPL was not distributed with this |
| * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| package org.onosproject.xran.codecs.ber.types; |
| |
| import com.fasterxml.jackson.annotation.JsonIgnore; |
| import com.fasterxml.jackson.annotation.JsonValue; |
| import org.onosproject.xran.codecs.ber.BerByteArrayOutputStream; |
| import org.onosproject.xran.codecs.ber.BerLength; |
| import org.onosproject.xran.codecs.ber.BerTag; |
| import org.onosproject.xran.codecs.ber.internal.Util; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.Serializable; |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| public class BerObjectIdentifier implements Serializable { |
| |
| public final static BerTag tag = new BerTag(BerTag.UNIVERSAL_CLASS, BerTag.PRIMITIVE, BerTag.OBJECT_IDENTIFIER_TAG); |
| private static final long serialVersionUID = 1L; |
| @JsonIgnore |
| public byte[] code = null; |
| |
| public int[] value; |
| |
| public BerObjectIdentifier() { |
| } |
| |
| public BerObjectIdentifier(byte[] code) { |
| this.code = code; |
| } |
| |
| public BerObjectIdentifier(int[] value) { |
| if ((value.length < 2) || ((value[0] == 0 || value[0] == 1) && (value[1] > 39)) || value[0] > 2) { |
| throw new IllegalArgumentException("invalid object identifier components"); |
| } |
| for (int objectIdentifierComponent : value) { |
| if (objectIdentifierComponent < 0) { |
| throw new IllegalArgumentException("invalid object identifier components"); |
| } |
| } |
| |
| this.value = value; |
| |
| } |
| |
| public int encode(BerByteArrayOutputStream os) throws IOException { |
| return encode(os, true); |
| } |
| |
| public int encode(BerByteArrayOutputStream os, boolean withTag) throws IOException { |
| |
| if (code != null) { |
| for (int i = code.length - 1; i >= 0; i--) { |
| os.write(code[i]); |
| } |
| if (withTag) { |
| return tag.encode(os) + code.length; |
| } |
| return code.length; |
| } |
| |
| int firstSubidentifier = 40 * value[0] + value[1]; |
| |
| int subidentifier; |
| |
| int codeLength = 0; |
| |
| for (int i = (value.length - 1); i > 0; i--) { |
| |
| if (i == 1) { |
| subidentifier = firstSubidentifier; |
| } else { |
| subidentifier = value[i]; |
| } |
| |
| // get length of subidentifier |
| int subIDLength = 1; |
| while (subidentifier > (Math.pow(2, (7 * subIDLength)) - 1)) { |
| subIDLength++; |
| } |
| |
| os.write(subidentifier & 0x7f); |
| |
| for (int j = 1; j <= (subIDLength - 1); j++) { |
| os.write(((subidentifier >> (7 * j)) & 0xff) | 0x80); |
| } |
| |
| codeLength += subIDLength; |
| } |
| |
| codeLength += BerLength.encodeLength(os, codeLength); |
| |
| if (withTag) { |
| codeLength += tag.encode(os); |
| } |
| |
| return codeLength; |
| } |
| |
| public int decode(InputStream is) throws IOException { |
| return decode(is, true); |
| } |
| |
| public int decode(InputStream is, boolean withTag) throws IOException { |
| |
| int codeLength = 0; |
| |
| if (withTag) { |
| codeLength += tag.decodeAndCheck(is); |
| } |
| |
| BerLength length = new BerLength(); |
| codeLength += length.decode(is); |
| |
| if (length.val == 0) { |
| value = new int[0]; |
| return codeLength; |
| } |
| |
| byte[] byteCode = new byte[length.val]; |
| Util.readFully(is, byteCode); |
| |
| codeLength += length.val; |
| |
| List<Integer> objectIdentifierComponentsList = new ArrayList<>(); |
| |
| int subIDEndIndex = 0; |
| while ((byteCode[subIDEndIndex] & 0x80) == 0x80) { |
| if (subIDEndIndex >= (length.val - 1)) { |
| throw new IOException("Invalid Object Identifier"); |
| } |
| subIDEndIndex++; |
| } |
| |
| int subidentifier = 0; |
| for (int i = 0; i <= subIDEndIndex; i++) { |
| subidentifier |= (byteCode[i] << ((subIDEndIndex - i) * 7)); |
| } |
| |
| if (subidentifier < 40) { |
| objectIdentifierComponentsList.add(0); |
| objectIdentifierComponentsList.add(subidentifier); |
| } else if (subidentifier < 80) { |
| objectIdentifierComponentsList.add(1); |
| objectIdentifierComponentsList.add(subidentifier - 40); |
| } else { |
| objectIdentifierComponentsList.add(2); |
| objectIdentifierComponentsList.add(subidentifier - 80); |
| } |
| |
| subIDEndIndex++; |
| |
| while (subIDEndIndex < length.val) { |
| int subIDStartIndex = subIDEndIndex; |
| |
| while ((byteCode[subIDEndIndex] & 0x80) == 0x80) { |
| if (subIDEndIndex == (length.val - 1)) { |
| throw new IOException("Invalid Object Identifier"); |
| } |
| subIDEndIndex++; |
| } |
| subidentifier = 0; |
| for (int j = subIDStartIndex; j <= subIDEndIndex; j++) { |
| subidentifier |= ((byteCode[j] & 0x7f) << ((subIDEndIndex - j) * 7)); |
| } |
| objectIdentifierComponentsList.add(subidentifier); |
| subIDEndIndex++; |
| } |
| |
| value = new int[objectIdentifierComponentsList.size()]; |
| for (int i = 0; i < objectIdentifierComponentsList.size(); i++) { |
| value[i] = objectIdentifierComponentsList.get(i); |
| } |
| |
| return codeLength; |
| |
| } |
| |
| @JsonValue |
| @Override |
| public String toString() { |
| if (value == null || value.length == 0) { |
| return ""; |
| } |
| |
| String objIDString = ""; |
| objIDString += value[0]; |
| for (int i = 1; i < value.length; i++) { |
| objIDString += "." + value[i]; |
| } |
| return objIDString; |
| } |
| |
| public BerObjectIdentifier append(int value) { |
| if (this.value == null) { |
| return new BerObjectIdentifier(new int[]{value}); |
| } |
| int[] values = new int[this.value.length + 1]; |
| for (int i = 0; i < this.value.length; ++i) { |
| values[i] = this.value[i]; |
| } |
| values[values.length - 1] = value; |
| return new BerObjectIdentifier(values); |
| } |
| |
| } |