19066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/* 29066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Copyright (C) 2006 The Android Open Source Project 39066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 49066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Licensed under the Apache License, Version 2.0 (the "License"); 59066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * you may not use this file except in compliance with the License. 69066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * You may obtain a copy of the License at 79066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 89066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * http://www.apache.org/licenses/LICENSE-2.0 99066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Unless required by applicable law or agreed to in writing, software 119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * distributed under the License is distributed on an "AS IS" BASIS, 129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * See the License for the specific language governing permissions and 149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * limitations under the License. 159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectpackage com.android.internal.telephony.gsm.stk; 189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport java.util.ArrayList; 209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport java.util.List; 219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/** 249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Class for representing COMPREHENSION-TLV objects. 25767a662ecde33c3979bf02b793d392aca0403162Wink Saville * 269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @see "ETSI TS 101 220 subsection 7.1.1" 27767a662ecde33c3979bf02b793d392aca0403162Wink Saville * 289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@hide} 299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectclass ComprehensionTlv { 319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int mTag; 329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private boolean mCr; 339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int mLength; 349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int mValueIndex; 359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private byte[] mRawValue; 362563a3ac05dd3cf8a07203ae682c243f2e793137Wink Saville 379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Constructor. Private on purpose. Use 399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link #decodeMany(byte[], int) decodeMany} or 409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * {@link #decode(byte[], int) decode} method. 41767a662ecde33c3979bf02b793d392aca0403162Wink Saville * 429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param tag The tag for this object 439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param cr Comprehension Required flag 449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param length Length of the value 459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param data Byte array containing the value 469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param valueIndex Index in data at which the value starts 479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected ComprehensionTlv(int tag, boolean cr, int length, byte[] data, 499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int valueIndex) { 509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mTag = tag; 519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mCr = cr; 529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mLength = length; 539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mValueIndex = valueIndex; 549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mRawValue = data; 559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getTag() { 589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mTag; 599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public boolean isComprehensionRequired() { 629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mCr; 639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getLength() { 669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mLength; 679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getValueIndex() { 709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mValueIndex; 719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public byte[] getRawValue() { 749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return mRawValue; 759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Parses a list of COMPREHENSION-TLV objects from a byte array. 79767a662ecde33c3979bf02b793d392aca0403162Wink Saville * 809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param data A byte array containing data to be parsed 819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param startIndex Index in data at which to start parsing 829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return A list of COMPREHENSION-TLV objects parsed 839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws ResultException 849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static List<ComprehensionTlv> decodeMany(byte[] data, int startIndex) 869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throws ResultException { 879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ArrayList<ComprehensionTlv> items = new ArrayList<ComprehensionTlv>(); 889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int endIndex = data.length; 899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project while (startIndex < endIndex) { 909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ComprehensionTlv ctlv = ComprehensionTlv.decode(data, startIndex); 919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project items.add(ctlv); 929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project startIndex = ctlv.mValueIndex + ctlv.mLength; 939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return items; 969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Parses an COMPREHENSION-TLV object from a byte array. 100767a662ecde33c3979bf02b793d392aca0403162Wink Saville * 1019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param data A byte array containing data to be parsed 1029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param startIndex Index in data at which to start parsing 1039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return A COMPREHENSION-TLV object parsed 1049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @throws ResultException 1059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static ComprehensionTlv decode(byte[] data, int startIndex) 1079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throws ResultException { 1089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project try { 1099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int curIndex = startIndex; 1109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int endIndex = data.length; 1119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /* tag */ 1139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int tag; 1149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean cr; // Comprehension required flag 1159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int temp = data[curIndex++] & 0xff; 1169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project switch (temp) { 1179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case 0: 1189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case 0xff: 1199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case 0x80: 1209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new ResultException(ResultCode.CMD_DATA_NOT_UNDERSTOOD); 1219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project case 0x7f: // tag is in three-byte format 1239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project tag = ((data[curIndex] & 0xff) << 8) 1249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project | (data[curIndex + 1] & 0xff); 1259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project cr = (tag & 0x8000) != 0; 1269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project tag &= ~0x8000; 1279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project curIndex += 2; 1289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 1299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project default: // tag is in single-byte format 1319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project tag = temp; 1329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project cr = (tag & 0x80) != 0; 1339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project tag &= ~0x80; 1349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project break; 1359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /* length */ 1389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int length; 1399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project temp = data[curIndex++] & 0xff; 1409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (temp < 0x80) { 1419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project length = temp; 1429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else if (temp == 0x81) { 1439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project length = data[curIndex++] & 0xff; 1449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (length < 0x80) { 1459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new ResultException( 1469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ResultCode.CMD_DATA_NOT_UNDERSTOOD); 1479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else if (temp == 0x82) { 1499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project length = ((data[curIndex] & 0xff) << 8) 1509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project | (data[curIndex + 1] & 0xff); 1519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project curIndex += 2; 1529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (length < 0x100) { 1539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new ResultException( 1549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ResultCode.CMD_DATA_NOT_UNDERSTOOD); 1559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else if (temp == 0x83) { 1579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project length = ((data[curIndex] & 0xff) << 16) 1589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project | ((data[curIndex + 1] & 0xff) << 8) 1599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project | (data[curIndex + 2] & 0xff); 1609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project curIndex += 3; 1619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (length < 0x10000) { 1629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new ResultException( 1639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ResultCode.CMD_DATA_NOT_UNDERSTOOD); 1649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 1669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new ResultException(ResultCode.CMD_DATA_NOT_UNDERSTOOD); 1679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1682563a3ac05dd3cf8a07203ae682c243f2e793137Wink Saville 1699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return new ComprehensionTlv(tag, cr, length, data, curIndex); 1702563a3ac05dd3cf8a07203ae682c243f2e793137Wink Saville 1719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } catch (IndexOutOfBoundsException e) { 1729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new ResultException(ResultCode.CMD_DATA_NOT_UNDERSTOOD); 1739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 176