1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one or more 3 * contributor license agreements. See the NOTICE file distributed with 4 * this work for additional information regarding copyright ownership. 5 * The ASF licenses this file to You under the Apache License, Version 2.0 6 * (the "License"); you may not use this file except in compliance with 7 * the License. You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * 15 * See the License for the specific language governing permissions and 16 * limitations under the License. 17 */ 18 19 /** 20 * @author Khen G. Kim, Aleksey V. Yantsen 21 */ 22 23 /** 24 * Created on 10.01.2004 25 */ 26 package org.apache.harmony.jpda.tests.framework.jdwp; 27 28 import java.io.UnsupportedEncodingException; 29 30 import org.apache.harmony.jpda.tests.framework.TestErrorException; 31 import org.apache.harmony.jpda.tests.framework.jdwp.JDWPConstants; 32 import org.apache.harmony.jpda.tests.framework.jdwp.TypesLengths; 33 34 /** 35 * This base class represents JDWP packet. 36 */ 37 public class Packet { 38 39 public static final int REPLY_PACKET_FLAG = 0x80; 40 41 public static final int FLAGS_INDEX = 8; 42 43 public static final int HEADER_SIZE = 11; 44 45 /** 46 * The size in bytes of the BYTE type value. 47 */ 48 protected static final int BYTE_SIZE = 1; 49 50 /** 51 * The size in bytes of the SHORT type value. 52 */ 53 protected static final int SHORT_SIZE = 2; 54 55 /** 56 * The size in bytes of the INT type value. 57 */ 58 protected static final int INT_SIZE = 4; 59 60 /** 61 * The size in bytes of the LONG type value. 62 */ 63 protected static final int LONG_SIZE = 8; 64 65 private static final int LENGTH_INDEX = 0; 66 67 private static final int ID_INDEX = 4; 68 69 private int id; 70 71 private byte flags; 72 73 private int length; 74 75 private byte data[]; 76 77 private int reading_data_index; 78 79 /** 80 * A constructor that creates an empty CommandPacket with empty header 81 * fields and no data. 82 */ Packet()83 public Packet() { 84 reading_data_index = 0; 85 data = new byte[0]; 86 } 87 88 /** 89 * A constructor that creates Packet from array of bytes including header 90 * and data sections. 91 * 92 * @param p array of bytes for new packet. 93 */ Packet(byte p[])94 public Packet(byte p[]) { 95 length = (int) readFromByteArray(p, LENGTH_INDEX, INT_SIZE); 96 if (length < HEADER_SIZE) { 97 throw new TestErrorException( 98 "Packet creation error: size of packet = " + length 99 + "is less than header size = " + HEADER_SIZE); 100 } 101 id = (int) readFromByteArray(p, ID_INDEX, INT_SIZE); 102 flags = p[FLAGS_INDEX]; 103 data = new byte[p.length - HEADER_SIZE]; 104 System.arraycopy(p, HEADER_SIZE, data, 0, p.length - HEADER_SIZE); 105 reading_data_index = 0; 106 } 107 108 /** 109 * Gets the length value of the header of the Packet. 110 * 111 * @return the length value of the header of the Packet. 112 */ getLength()113 public int getLength() { 114 return length; 115 } 116 117 /** 118 * Sets the id value of the header of the Packet. 119 * 120 * @param i 121 * the id value of the header of the Packet. 122 */ setId(int i)123 public void setId(int i) { 124 id = i; 125 } 126 127 /** 128 * Gets the id value of the header of the Packet. 129 * 130 * @return the id value of the header of the Packet. 131 */ getId()132 public int getId() { 133 return id; 134 } 135 136 /** 137 * Sets the flags value of the header of the Packet. 138 * 139 * @param f 140 * the flags value of the header of the Packet. 141 */ setFlags(byte f)142 public void setFlags(byte f) { 143 flags = f; 144 } 145 146 /** 147 * Gets the flags value of the header of the Packet. 148 * 149 * @return the flags value of the header of the Packet. 150 */ getFlags()151 public byte getFlags() { 152 return flags; 153 } 154 155 /** 156 * Gets the flags value from the header of the Packet. 157 * 158 * @param tag 159 * Type tag (see JDWP.tag) 160 * @return the flags value of the header of the Packet. 161 */ isValuePrimitiveType(byte tag)162 public boolean isValuePrimitiveType(byte tag) { 163 switch (tag) { 164 case JDWPConstants.Tag.ARRAY_TAG: { 165 return false; 166 } 167 case JDWPConstants.Tag.BYTE_TAG: { 168 return true; 169 } 170 case JDWPConstants.Tag.CHAR_TAG: { 171 return true; 172 } 173 case JDWPConstants.Tag.OBJECT_TAG: { 174 return false; 175 } 176 case JDWPConstants.Tag.FLOAT_TAG: { 177 return true; 178 } 179 case JDWPConstants.Tag.DOUBLE_TAG: { 180 return true; 181 } 182 case JDWPConstants.Tag.INT_TAG: { 183 return true; 184 } 185 case JDWPConstants.Tag.LONG_TAG: { 186 return true; 187 } 188 case JDWPConstants.Tag.SHORT_TAG: { 189 return true; 190 } 191 case JDWPConstants.Tag.VOID_TAG: { 192 return true; 193 } 194 case JDWPConstants.Tag.BOOLEAN_TAG: { 195 return true; 196 } 197 case JDWPConstants.Tag.STRING_TAG: { 198 return false; 199 } 200 case JDWPConstants.Tag.THREAD_TAG: { 201 return false; 202 } 203 case JDWPConstants.Tag.THREAD_GROUP_TAG: { 204 return false; 205 } 206 case JDWPConstants.Tag.CLASS_LOADER_TAG: { 207 return false; 208 } 209 case JDWPConstants.Tag.CLASS_OBJECT_TAG: { 210 return false; 211 } 212 case JDWPConstants.Tag.NO_TAG: { 213 return true; 214 } 215 default: { 216 throw new TestErrorException("Improper JDWP.tag value = " + tag); 217 } 218 } 219 } 220 221 /** 222 * Sets the next value of the data of the Packet as byte. 223 * 224 * @param val 225 * the byte value. 226 */ setNextValueAsByte(byte val)227 public void setNextValueAsByte(byte val) { 228 int new_data_size = data.length + BYTE_SIZE; 229 byte data_temp[] = data; 230 data = new byte[new_data_size]; 231 System.arraycopy(data_temp, 0, data, 0, new_data_size - BYTE_SIZE); 232 data[new_data_size - BYTE_SIZE] = val; 233 } 234 235 /** 236 * Gets the next value of the data of the Packet as byte. 237 * 238 * @return the next value of the data of the Packet as byte. 239 */ getNextValueAsByte()240 public byte getNextValueAsByte() { 241 reading_data_index = reading_data_index + BYTE_SIZE; 242 return data[reading_data_index - BYTE_SIZE]; 243 } 244 245 /** 246 * Sets the next value of the data of the Packet as boolean. 247 * 248 * @param val 249 * the boolean value. 250 */ setNextValueAsBoolean(boolean val)251 public void setNextValueAsBoolean(boolean val) { 252 int old_data_size = data.length; 253 int new_data_size = old_data_size 254 + TypesLengths.getTypeLength(TypesLengths.BOOLEAN_ID); 255 byte data_temp[] = data; 256 data = new byte[new_data_size]; 257 System.arraycopy(data_temp, 0, data, 0, old_data_size); 258 if (val) { 259 data[old_data_size] = 1; 260 } else { 261 data[old_data_size] = 0; 262 } 263 } 264 265 /** 266 * Gets the next value of the data of the Packet as boolean. 267 * 268 * @return the next value of the data of the Packet as boolean. 269 */ getNextValueAsBoolean()270 public boolean getNextValueAsBoolean() { 271 int res = (int) data[reading_data_index] & 0xFF; 272 reading_data_index = reading_data_index 273 + TypesLengths.getTypeLength(TypesLengths.BOOLEAN_ID); 274 return (res != 0); 275 } 276 277 /** 278 * Sets the next value of the data of the Packet as short. 279 * 280 * @param val 281 * the short value. 282 */ setNextValueAsShort(short val)283 public void setNextValueAsShort(short val) { 284 int new_data_size = data.length 285 + TypesLengths.getTypeLength(TypesLengths.SHORT_ID); 286 byte data_temp[] = data; 287 data = new byte[new_data_size]; 288 System.arraycopy(data_temp, 0, data, 0, new_data_size 289 - TypesLengths.getTypeLength(TypesLengths.SHORT_ID)); 290 this.writeAtByteArray((long) val, data, new_data_size 291 - TypesLengths.getTypeLength(TypesLengths.SHORT_ID), 292 TypesLengths.getTypeLength(TypesLengths.SHORT_ID)); 293 } 294 295 /** 296 * Gets the next value of the data of the Packet as short. 297 * 298 * @return the next value of the data of the Packet as short. 299 */ getNextValueAsShort()300 public short getNextValueAsShort() { 301 reading_data_index = reading_data_index 302 + TypesLengths.getTypeLength(TypesLengths.SHORT_ID); 303 return (short) readFromByteArray(data, reading_data_index 304 - TypesLengths.getTypeLength(TypesLengths.SHORT_ID), 305 TypesLengths.getTypeLength(TypesLengths.SHORT_ID)); 306 } 307 308 /** 309 * Sets the next value of the data of the Packet as int. 310 * 311 * @param val 312 * the int value. 313 */ setNextValueAsInt(int val)314 public void setNextValueAsInt(int val) { 315 int new_data_size = data.length 316 + TypesLengths.getTypeLength(TypesLengths.INT_ID); 317 byte data_temp[] = data; 318 data = new byte[new_data_size]; 319 System.arraycopy(data_temp, 0, data, 0, new_data_size 320 - TypesLengths.getTypeLength(TypesLengths.INT_ID)); 321 this.writeAtByteArray((long) val, data, new_data_size 322 - TypesLengths.getTypeLength(TypesLengths.INT_ID), TypesLengths 323 .getTypeLength(TypesLengths.INT_ID)); 324 } 325 326 /** 327 * Gets the next value of the data of the Packet as int. 328 * 329 * @return the next value of the data of the Packet as int. 330 */ getNextValueAsInt()331 public int getNextValueAsInt() { 332 reading_data_index = reading_data_index 333 + TypesLengths.getTypeLength(TypesLengths.INT_ID); 334 return (int) readFromByteArray(data, reading_data_index 335 - TypesLengths.getTypeLength(TypesLengths.INT_ID), TypesLengths 336 .getTypeLength(TypesLengths.INT_ID)); 337 } 338 339 /** 340 * Sets the next value of the data of the Packet as double. 341 * 342 * @param dval 343 * the double value. 344 */ setNextValueAsDouble(double dval)345 public void setNextValueAsDouble(double dval) { 346 int new_data_size = data.length 347 + TypesLengths.getTypeLength(TypesLengths.DOUBLE_ID); 348 byte data_temp[] = data; 349 long val = Double.doubleToLongBits(dval); 350 data = new byte[new_data_size]; 351 System.arraycopy(data_temp, 0, data, 0, new_data_size 352 - TypesLengths.getTypeLength(TypesLengths.DOUBLE_ID)); 353 this.writeAtByteArray((long) val, data, new_data_size 354 - TypesLengths.getTypeLength(TypesLengths.DOUBLE_ID), 355 TypesLengths.getTypeLength(TypesLengths.DOUBLE_ID)); 356 } 357 358 /** 359 * Gets the next value of the data of the Packet as double. 360 * 361 * @return the next value of the data of the Packet as double. 362 */ getNextValueAsDouble()363 public double getNextValueAsDouble() { 364 reading_data_index = reading_data_index 365 + TypesLengths.getTypeLength(TypesLengths.DOUBLE_ID); 366 long res = readFromByteArray(data, reading_data_index 367 - TypesLengths.getTypeLength(TypesLengths.DOUBLE_ID), 368 TypesLengths.getTypeLength(TypesLengths.DOUBLE_ID)); 369 370 return Double.longBitsToDouble(res); 371 } 372 373 /** 374 * Sets the next value of the data of the Packet as float. 375 * 376 * @param fval 377 * the float value. 378 */ setNextValueAsFloat(float fval)379 public void setNextValueAsFloat(float fval) { 380 int new_data_size = data.length 381 + TypesLengths.getTypeLength(TypesLengths.FLOAT_ID); 382 byte data_temp[] = data; 383 long val = Float.floatToIntBits(fval); 384 data = new byte[new_data_size]; 385 System.arraycopy(data_temp, 0, data, 0, new_data_size 386 - TypesLengths.getTypeLength(TypesLengths.FLOAT_ID)); 387 this.writeAtByteArray((long) val, data, new_data_size 388 - TypesLengths.getTypeLength(TypesLengths.FLOAT_ID), 389 TypesLengths.getTypeLength(TypesLengths.FLOAT_ID)); 390 } 391 392 /** 393 * Gets the next value of the data of the Packet as float. 394 * 395 * @return the next value of the data of the Packet as float. 396 */ getNextValueAsFloat()397 public float getNextValueAsFloat() { 398 reading_data_index = reading_data_index 399 + TypesLengths.getTypeLength(TypesLengths.FLOAT_ID); 400 long res = readFromByteArray(data, reading_data_index 401 - TypesLengths.getTypeLength(TypesLengths.FLOAT_ID), 402 TypesLengths.getTypeLength(TypesLengths.FLOAT_ID)); 403 404 return Float.intBitsToFloat((int) res); 405 } 406 407 /** 408 * Sets the next value of the data of the Packet as char. 409 * 410 * @param val 411 * the char value. 412 */ setNextValueAsChar(char val)413 public void setNextValueAsChar(char val) { 414 int new_data_size = data.length 415 + TypesLengths.getTypeLength(TypesLengths.CHAR_ID); 416 byte data_temp[] = data; 417 data = new byte[new_data_size]; 418 System.arraycopy(data_temp, 0, data, 0, new_data_size 419 - TypesLengths.getTypeLength(TypesLengths.CHAR_ID)); 420 this.writeAtByteArray((long) val, data, new_data_size 421 - TypesLengths.getTypeLength(TypesLengths.CHAR_ID), 422 TypesLengths.getTypeLength(TypesLengths.CHAR_ID)); 423 } 424 425 /** 426 * Gets the next value of the data of the Packet as char. 427 * 428 * @return the next value of the data of the Packet as char. 429 */ getNextValueAsChar()430 public char getNextValueAsChar() { 431 reading_data_index = reading_data_index 432 + TypesLengths.getTypeLength(TypesLengths.CHAR_ID); 433 return (char) readFromByteArray(data, reading_data_index 434 - TypesLengths.getTypeLength(TypesLengths.CHAR_ID), 435 TypesLengths.getTypeLength(TypesLengths.CHAR_ID)); 436 } 437 438 /** 439 * Sets the next value of the data of the Packet as long. 440 * 441 * @param val 442 * the long value. 443 */ setNextValueAsLong(long val)444 public void setNextValueAsLong(long val) { 445 int new_data_size = data.length 446 + TypesLengths.getTypeLength(TypesLengths.LONG_ID); 447 byte data_temp[] = data; 448 data = new byte[new_data_size]; 449 System.arraycopy(data_temp, 0, data, 0, new_data_size 450 - TypesLengths.getTypeLength(TypesLengths.LONG_ID)); 451 this.writeAtByteArray(val, data, new_data_size 452 - TypesLengths.getTypeLength(TypesLengths.LONG_ID), 453 TypesLengths.getTypeLength(TypesLengths.LONG_ID)); 454 } 455 456 /** 457 * Gets the next value of the data of the Packet as long. 458 * 459 * @return the next value of the data of the Packet as long. 460 */ getNextValueAsLong()461 public long getNextValueAsLong() { 462 reading_data_index = reading_data_index 463 + TypesLengths.getTypeLength(TypesLengths.LONG_ID); 464 return readFromByteArray(data, reading_data_index 465 - TypesLengths.getTypeLength(TypesLengths.LONG_ID), 466 TypesLengths.getTypeLength(TypesLengths.LONG_ID)); 467 } 468 469 /** 470 * Sets the next value of the data of the Packet as String in the "UTF-8" 471 * Charset. 472 * 473 * @param val 474 * the String in the "UTF-8" Charset. 475 */ setNextValueAsString(String val)476 public void setNextValueAsString(String val) { 477 byte data_temp[] = data; 478 byte val_as_bytes[]; 479 try { 480 val_as_bytes = val.getBytes("UTF-8"); 481 } catch (UnsupportedEncodingException e) { 482 throw new TestErrorException(e); 483 } 484 int new_data_size = data.length + val_as_bytes.length 485 + TypesLengths.getTypeLength(TypesLengths.INT_ID); 486 data = new byte[new_data_size]; 487 System.arraycopy(data_temp, 0, data, 0, new_data_size 488 - val_as_bytes.length 489 - TypesLengths.getTypeLength(TypesLengths.INT_ID)); 490 this.writeAtByteArray((long) val_as_bytes.length, data, new_data_size 491 - val_as_bytes.length 492 - TypesLengths.getTypeLength(TypesLengths.INT_ID), TypesLengths 493 .getTypeLength(TypesLengths.INT_ID)); 494 System.arraycopy(val_as_bytes, 0, data, new_data_size 495 - val_as_bytes.length, val_as_bytes.length); 496 } 497 498 /** 499 * Gets the next value of the data of the Packet as String in the "UTF-8" 500 * Charset. 501 * 502 * @return the next value of the data of the Packet as String in the "UTF-8" 503 * Charset. 504 */ getNextValueAsString()505 public String getNextValueAsString() { 506 int string_length = this.getNextValueAsInt(); 507 String res = null; 508 try { 509 res = new String(data, reading_data_index, string_length, "UTF-8"); 510 } catch (UnsupportedEncodingException e) { 511 throw new TestErrorException(e); 512 } 513 reading_data_index = reading_data_index + string_length; 514 return res; 515 } 516 517 /** 518 * Sets the next value of the data of the Packet as objectID VM-sensitive 519 * value. If length is less than 8 bytes, the appropriate high bits in the 520 * val value will be ignored. 521 * 522 * @param val 523 * the ObjectID value. 524 */ setNextValueAsObjectID(long val)525 public void setNextValueAsObjectID(long val) { 526 if (TypesLengths.getTypeLength(TypesLengths.OBJECT_ID) < 0 527 || TypesLengths.getTypeLength(TypesLengths.OBJECT_ID) > 8) { 528 throw new TestErrorException("Improper ObjectID value length = " 529 + TypesLengths.getTypeLength(TypesLengths.OBJECT_ID)); 530 } 531 int new_data_size = data.length 532 + TypesLengths.getTypeLength(TypesLengths.OBJECT_ID); 533 byte data_temp[] = data; 534 data = new byte[new_data_size]; 535 System.arraycopy(data_temp, 0, data, 0, new_data_size 536 - TypesLengths.getTypeLength(TypesLengths.OBJECT_ID)); 537 this.writeAtByteArray(val, data, new_data_size 538 - TypesLengths.getTypeLength(TypesLengths.OBJECT_ID), 539 TypesLengths.getTypeLength(TypesLengths.OBJECT_ID)); 540 } 541 542 /** 543 * Gets the next value of the data of the Packet as objectID VM-sensitive 544 * value. If length is less than 8 bytes, the appropriate high bits in the 545 * returned value can be ignored. 546 * 547 * @return the next value of the data of the Packet as VM-sensitive value. 548 */ getNextValueAsObjectID()549 public long getNextValueAsObjectID() { 550 if (TypesLengths.getTypeLength(TypesLengths.OBJECT_ID) < 0 551 || TypesLengths.getTypeLength(TypesLengths.OBJECT_ID) > 8) { 552 throw new TestErrorException("Improper ObjectID value length = " 553 + TypesLengths.getTypeLength(TypesLengths.OBJECT_ID) + "!"); 554 } 555 reading_data_index = reading_data_index 556 + TypesLengths.getTypeLength(TypesLengths.OBJECT_ID); 557 return (int) readFromByteArray(data, reading_data_index 558 - TypesLengths.getTypeLength(TypesLengths.OBJECT_ID), 559 TypesLengths.getTypeLength(TypesLengths.OBJECT_ID)); 560 } 561 562 /** 563 * Sets the next value of the data of the Packet as ThreadID VM-sensitive 564 * value. If length is less than 8 bytes, the appropriate high bits in the 565 * val value will be ignored. 566 * 567 * @param val 568 * the ThreadID value. 569 */ setNextValueAsThreadID(long val)570 public void setNextValueAsThreadID(long val) { 571 this.setNextValueAsObjectID(val); 572 } 573 574 /** 575 * Gets the next value of the data of the Packet as ThreadID VM-sensitive 576 * value. If length is less than 8 bytes, the appropriate high bits in the 577 * returned value can be ignored. 578 * 579 * @return the next value of the data of the Packet as VM-sensitive value. 580 */ getNextValueAsThreadID()581 public long getNextValueAsThreadID() { 582 return this.getNextValueAsObjectID(); 583 } 584 585 /** 586 * Sets the next value of the data of the Packet as ThreadGroupID 587 * VM-sensitive value. If length is less than 8 bytes, the appropriate high 588 * bits in the val value will be ignored. 589 * 590 * @param val 591 * the ThreadGroupID value. 592 */ setNextValueAsThreadGroupID(long val)593 public void setNextValueAsThreadGroupID(long val) { 594 this.setNextValueAsObjectID(val); 595 } 596 597 /** 598 * Gets the next value of the data of the Packet as ThreadGroupID 599 * VM-sensitive value. If length is less than 8 bytes, the appropriate high 600 * bits in the returned value can be ignored. 601 * 602 * @return the next value of the data of the Packet as VM-sensitive value. 603 */ getNextValueAsThreadGroupID()604 public long getNextValueAsThreadGroupID() { 605 return this.getNextValueAsObjectID(); 606 } 607 608 /** 609 * Sets the next value of the data of the Packet as StringID VM-sensitive 610 * value. If length is less than 8 bytes, the appropriate high bits in the 611 * val value will be ignored. 612 * 613 * @param val 614 * the StringID value. 615 */ setNextValueAsStringID(long val)616 public void setNextValueAsStringID(long val) { 617 this.setNextValueAsObjectID(val); 618 } 619 620 /** 621 * Gets the next value of the data of the Packet as StringID VM-sensitive 622 * value. If length is less than 8 bytes, the appropriate high bits in the 623 * returned value can be ignored. 624 * 625 * @return the next value of the data of the Packet as VM-sensitive value. 626 */ getNextValueAsStringID()627 public long getNextValueAsStringID() { 628 return this.getNextValueAsObjectID(); 629 } 630 631 /** 632 * Sets the next value of the data of the Packet as ClassLoaderID 633 * VM-sensitive value. If length is less than 8 bytes, the appropriate high 634 * bits in the val value will be ignored. 635 * 636 * @param val 637 * the ClassLoaderID value. 638 */ setNextValueAsClassLoaderID(long val)639 public void setNextValueAsClassLoaderID(long val) { 640 this.setNextValueAsObjectID(val); 641 } 642 643 /** 644 * Gets the next value of the data of the Packet as ClassLoaderID 645 * VM-sensitive value. If length is less than 8 bytes, the appropriate high 646 * bits in the returned value can be ignored. 647 * 648 * @return the next value of the data of the Packet as VM-sensitive value. 649 */ getNextValueAsClassLoaderID()650 public long getNextValueAsClassLoaderID() { 651 return this.getNextValueAsObjectID(); 652 } 653 654 /** 655 * Sets the next value of the data of the Packet as ClassObjectID 656 * VM-sensitive value. If length is less than 8 bytes, the appropriate high 657 * bits in the val value will be ignored. 658 * 659 * @param val 660 * the ClassObjectID value. 661 */ setNextValueAsClassObjectID(long val)662 public void setNextValueAsClassObjectID(long val) { 663 this.setNextValueAsObjectID(val); 664 } 665 666 /** 667 * Gets the next value of the data of the Packet as ClassObjectID 668 * VM-sensitive value. If length is less than 8 bytes, the appropriate high 669 * bits in the returned value can be ignored. 670 * 671 * @return the next value of the data of the Packet as VM-sensitive value. 672 */ getNextValueAsClassObjectID()673 public long getNextValueAsClassObjectID() { 674 return this.getNextValueAsObjectID(); 675 } 676 677 /** 678 * Sets the next value of the data of the Packet as ArrayID VM-sensitive 679 * value. If length is less than 8 bytes, the appropriate high bits in the 680 * val value will be ignored. 681 * 682 * @param val 683 * the ArrayID value. 684 */ setNextValueAsArrayID(long val)685 public void setNextValueAsArrayID(long val) { 686 this.setNextValueAsObjectID(val); 687 } 688 689 /** 690 * Gets the next value of the data of the Packet as ArrayID VM-sensitive 691 * value. If length is less than 8 bytes, the appropriate high bits in the 692 * returned value can be ignored. 693 * 694 * @return the next value of the data of the Packet as VM-sensitive value. 695 */ getNextValueAsClassArrayID()696 public long getNextValueAsClassArrayID() { 697 return this.getNextValueAsObjectID(); 698 } 699 700 /** 701 * Sets the next value of the data of the Packet as ReferenceTypeID 702 * VM-sensitive value. If length is less than 8 bytes, the appropriate high 703 * bits in the val value will be ignored. 704 * 705 * @param val 706 * the ReferenceTypeID value. 707 */ setNextValueAsReferenceTypeID(long val)708 public void setNextValueAsReferenceTypeID(long val) { 709 this.setNextValueAsObjectID(val); 710 } 711 712 /** 713 * Gets the next value of the data of the Packet as ReferenceTypeID 714 * VM-sensitive value. If length is less than 8 bytes, the appropriate high 715 * bits in the returned value can be ignored. 716 * 717 * @return the next value of the data of the Packet as VM-sensitive value. 718 */ getNextValueAsReferenceTypeID()719 public long getNextValueAsReferenceTypeID() { 720 return this.getNextValueAsObjectID(); 721 } 722 723 /** 724 * Sets the next value of the data of the Packet as ClassID VM-sensitive 725 * value. If length is less than 8 bytes, the appropriate high bits in the 726 * val value will be ignored. 727 * 728 * @param val 729 * the ClassID value. 730 */ setNextValueAsClassID(long val)731 public void setNextValueAsClassID(long val) { 732 this.setNextValueAsObjectID(val); 733 } 734 735 /** 736 * Gets the next value of the data of the Packet as ClassID VM-sensitive 737 * value. If length is less than 8 bytes, the appropriate high bits in the 738 * returned value can be ignored. 739 * 740 * @return the next value of the data of the Packet as VM-sensitive value. 741 */ getNextValueAsClassID()742 public long getNextValueAsClassID() { 743 return this.getNextValueAsObjectID(); 744 } 745 746 /** 747 * Sets the next value of the data of the Packet as InterfaceID VM-sensitive 748 * value. If length is less than 8 bytes, the appropriate high bits in the 749 * val value will be ignored. 750 * 751 * @param val 752 * the InterfaceID value. 753 */ setNextValueAsInterfaceID(long val)754 public void setNextValueAsInterfaceID(long val) { 755 this.setNextValueAsObjectID(val); 756 } 757 758 /** 759 * Gets the next value of the data of the Packet as InterfaceID VM-sensitive 760 * value. If length is less than 8 bytes, the appropriate high bits in the 761 * returned value can be ignored. 762 * 763 * @return the next value of the data of the Packet as VM-sensitive value. 764 */ getNextValueAsInterfaceID()765 public long getNextValueAsInterfaceID() { 766 return this.getNextValueAsObjectID(); 767 } 768 769 /** 770 * Sets the next value of the data of the Packet as ArrayTypeID VM-sensitive 771 * value. If length is less than 8 bytes, the appropriate high bits in the 772 * val value will be ignored. 773 * 774 * @param val 775 * the ArrayTypeID value. 776 */ setNextValueAsArrayTypeID(long val)777 public void setNextValueAsArrayTypeID(long val) { 778 this.setNextValueAsObjectID(val); 779 } 780 781 /** 782 * Gets the next value of the data of the Packet as ArrayTypeID VM-sensitive 783 * value. If length is less than 8 bytes, the appropriate high bits in the 784 * returned value can be ignored. 785 * 786 * @return the next value of the data of the Packet as VM-sensitive value. 787 */ getNextValueAsArrayTypeID()788 public long getNextValueAsArrayTypeID() { 789 return this.getNextValueAsObjectID(); 790 } 791 792 /** 793 * Sets the next value of the data of the Packet as tagged-objectID 794 * VM-sensitive value. If length is less than 8 bytes, the appropriate high 795 * bits in the val value will be ignored. 796 * 797 * @param taggedObject 798 * TaggedObject value. 799 */ setNextValueAsTaggedObject(TaggedObject taggedObject)800 public void setNextValueAsTaggedObject(TaggedObject taggedObject) { 801 this.setNextValueAsByte(taggedObject.tag); 802 this.setNextValueAsObjectID(taggedObject.objectID); 803 } 804 805 /** 806 * Gets the next value of the data of the Packet as tagged-objectID 807 * VM-sensitive value. If length is less than 8 bytes, the appropriate high 808 * bits in the returned value can be ignored. 809 * 810 * @return the next value of the data of the Packet as VM-sensitive value. 811 */ getNextValueAsTaggedObject()812 public TaggedObject getNextValueAsTaggedObject() { 813 if (TypesLengths.getTypeLength(TypesLengths.OBJECT_ID) < 0 814 || TypesLengths.getTypeLength(TypesLengths.OBJECT_ID) > 8) { 815 throw new TestErrorException("Improper ObjectID value length = " 816 + TypesLengths.getTypeLength(TypesLengths.OBJECT_ID)); 817 } 818 TaggedObject taggedObject = new TaggedObject(); 819 taggedObject.tag = this.getNextValueAsByte(); 820 taggedObject.objectID = this.getNextValueAsObjectID(); 821 return taggedObject; 822 } 823 824 /** 825 * Sets the next value of the data of the Packet as MethodID VM-sensitive 826 * value. If length is less than 8 bytes, the appropriate high bits in the 827 * val value will be ignored. 828 * 829 * @param methodID 830 * MethodID value. 831 */ setNextValueAsMethodID(long methodID)832 public void setNextValueAsMethodID(long methodID) { 833 if (TypesLengths.getTypeLength(TypesLengths.METHOD_ID) < 0 834 || TypesLengths.getTypeLength(TypesLengths.METHOD_ID) > 8) { 835 throw new TestErrorException("Improper MethodID value length = " 836 + TypesLengths.getTypeLength(TypesLengths.METHOD_ID)); 837 } 838 int new_data_size = data.length 839 + TypesLengths.getTypeLength(TypesLengths.METHOD_ID); 840 byte data_temp[] = data; 841 data = new byte[new_data_size]; 842 System.arraycopy(data_temp, 0, data, 0, new_data_size 843 - TypesLengths.getTypeLength(TypesLengths.METHOD_ID)); 844 this.writeAtByteArray(methodID, data, new_data_size 845 - TypesLengths.getTypeLength(TypesLengths.METHOD_ID), 846 TypesLengths.getTypeLength(TypesLengths.METHOD_ID)); 847 } 848 849 /** 850 * Gets the next value of the data of the Packet as MethodID VM-sensitive 851 * value. If length is less than 8 bytes, the appropriate high bits in the 852 * returned value can be ignored. 853 * 854 * @return the next value of the data of the Packet as VM-sensitive value. 855 */ getNextValueAsMethodID()856 public long getNextValueAsMethodID() { 857 if (TypesLengths.getTypeLength(TypesLengths.METHOD_ID) < 0 858 || TypesLengths.getTypeLength(TypesLengths.METHOD_ID) > 8) { 859 throw new TestErrorException("Improper MethodID value length = " 860 + TypesLengths.getTypeLength(TypesLengths.METHOD_ID)); 861 } 862 reading_data_index = reading_data_index 863 + TypesLengths.getTypeLength(TypesLengths.METHOD_ID); 864 long result = readFromByteArray(data, reading_data_index 865 - TypesLengths.getTypeLength(TypesLengths.METHOD_ID), 866 TypesLengths.getTypeLength(TypesLengths.METHOD_ID)); 867 return result; 868 } 869 870 /** 871 * Sets the next value of the data of the Packet as FieldID VM-sensitive 872 * value. If length is less than 8 bytes, the appropriate high bits in the 873 * val value will be ignored. 874 * 875 * @param fieldID 876 * FieldID value. 877 */ setNextValueAsFieldID(long fieldID)878 public void setNextValueAsFieldID(long fieldID) { 879 if (TypesLengths.getTypeLength(TypesLengths.FIELD_ID) < 0 880 || TypesLengths.getTypeLength(TypesLengths.FIELD_ID) > 8) { 881 throw new TestErrorException("Improper FieldID value length = " 882 + TypesLengths.getTypeLength(TypesLengths.FIELD_ID)); 883 } 884 int new_data_size = data.length 885 + TypesLengths.getTypeLength(TypesLengths.FIELD_ID); 886 byte data_temp[] = data; 887 data = new byte[new_data_size]; 888 System.arraycopy(data_temp, 0, data, 0, new_data_size 889 - TypesLengths.getTypeLength(TypesLengths.FIELD_ID)); 890 this.writeAtByteArray(fieldID, data, new_data_size 891 - TypesLengths.getTypeLength(TypesLengths.FIELD_ID), 892 TypesLengths.getTypeLength(TypesLengths.FIELD_ID)); 893 } 894 895 /** 896 * Gets the next value of the data of the Packet as FieldID VM-sensitive 897 * value. If length is less than 8 bytes, the appropriate high bits in the 898 * returned value can be ignored. 899 * 900 * @return the next value of the data of the Packet as VM-sensitive value. 901 */ getNextValueAsFieldID()902 public long getNextValueAsFieldID() { 903 if (TypesLengths.getTypeLength(TypesLengths.FIELD_ID) < 0 904 || TypesLengths.getTypeLength(TypesLengths.FIELD_ID) > 8) { 905 throw new TestErrorException("Improper FieldID value length = " 906 + TypesLengths.getTypeLength(TypesLengths.FIELD_ID)); 907 } 908 reading_data_index = reading_data_index 909 + TypesLengths.getTypeLength(TypesLengths.FIELD_ID); 910 long result = readFromByteArray(data, reading_data_index 911 - TypesLengths.getTypeLength(TypesLengths.FIELD_ID), 912 TypesLengths.getTypeLength(TypesLengths.FIELD_ID)); 913 return result; 914 } 915 916 /** 917 * Sets the next value of the data of the Packet as FrameID VM-sensitive 918 * value. If length is less than 8 bytes, the appropriate high bits in the 919 * val value will be ignored. 920 * 921 * @param frameID 922 * FrameID value. 923 */ setNextValueAsFrameID(long frameID)924 public void setNextValueAsFrameID(long frameID) { 925 if (TypesLengths.getTypeLength(TypesLengths.FRAME_ID) < 0 926 || TypesLengths.getTypeLength(TypesLengths.FRAME_ID) > 8) { 927 throw new TestErrorException("Improper FrameID value length = " 928 + TypesLengths.getTypeLength(TypesLengths.FRAME_ID)); 929 } 930 int new_data_size = data.length 931 + TypesLengths.getTypeLength(TypesLengths.FRAME_ID); 932 byte data_temp[] = data; 933 data = new byte[new_data_size]; 934 System.arraycopy(data_temp, 0, data, 0, new_data_size 935 - TypesLengths.getTypeLength(TypesLengths.FRAME_ID)); 936 this.writeAtByteArray(frameID, data, new_data_size 937 - TypesLengths.getTypeLength(TypesLengths.FRAME_ID), 938 TypesLengths.getTypeLength(TypesLengths.FRAME_ID)); 939 } 940 941 /** 942 * Gets the next value of the data of the Packet as FrameID VM-sensitive 943 * value. If length is less than 8 bytes, the appropriate high bits in the 944 * returned value can be ignored. 945 * 946 * @return the next value of the data of the Packet as VM-sensitive value. 947 */ getNextValueAsFrameID()948 public long getNextValueAsFrameID() { 949 if (TypesLengths.getTypeLength(TypesLengths.FRAME_ID) < 0 950 || TypesLengths.getTypeLength(TypesLengths.FRAME_ID) > 8) { 951 throw new TestErrorException("Improper FrameID value length = " 952 + TypesLengths.getTypeLength(TypesLengths.FRAME_ID)); 953 } 954 reading_data_index = reading_data_index 955 + TypesLengths.getTypeLength(TypesLengths.FRAME_ID); 956 long result = readFromByteArray(data, reading_data_index 957 - TypesLengths.getTypeLength(TypesLengths.FRAME_ID), 958 TypesLengths.getTypeLength(TypesLengths.FRAME_ID)); 959 return result; 960 } 961 962 /** 963 * Sets the next value of the data of the Packet as Location VM-sensitive 964 * value. If length is less than 8 bytes, the appropriate high bits in the 965 * val value will be ignored. 966 * 967 * @param location 968 * Location value. 969 */ setNextValueAsLocation(Location location)970 public void setNextValueAsLocation(Location location) { 971 this.setNextValueAsByte(location.tag); 972 this.setNextValueAsClassID(location.classID); 973 this.setNextValueAsMethodID(location.methodID); 974 this.setNextValueAsLong(location.index); 975 } 976 977 /** 978 * Gets the next value of the data of the Packet as Location VM-sensitive 979 * value. If length is less than 8 bytes, the appropriate high bits in the 980 * returned value can be ignored. 981 * 982 * @return the next value of the data of the Packet as VM-sensitive value. 983 */ getNextValueAsLocation()984 public Location getNextValueAsLocation() { 985 Location location = new Location(); 986 location.tag = this.getNextValueAsByte(); 987 location.classID = this.getNextValueAsClassID(); 988 location.methodID = this.getNextValueAsMethodID(); 989 location.index = this.getNextValueAsLong(); 990 return location; 991 } 992 993 /** 994 * Sets the next value of the data of the Packet as Value VM-sensitive 995 * value. If length is less than 8 bytes, the appropriate high bits in the 996 * val value will be ignored. 997 * 998 * @param value 999 * Value value. 1000 * @throws UnsupportedEncodingException 1001 */ setNextValueAsValue(Value value)1002 public void setNextValueAsValue(Value value) { 1003 this.setNextValueAsByte(value.getTag()); 1004 setNextValueAsUntaggedValue(value); 1005 } 1006 1007 /** 1008 * Gets the next value of the data of the Packet as Value VM-sensitive 1009 * value. If length is less than 8 bytes, the appropriate high bits in the 1010 * returned value can be ignored. 1011 * 1012 * @return the next value of the data of the Packet as VM-sensitive value. 1013 */ getNextValueAsValue()1014 public Value getNextValueAsValue() { 1015 byte tag = this.getNextValueAsByte(); 1016 return getNextValueAsUntaggedValue(tag); 1017 } 1018 1019 /** 1020 * Sets the next value of the data of the Packet as UntaggedValue 1021 * VM-sensitive value. If length is less than 8 bytes, the appropriate high 1022 * bits in the val value will be ignored. 1023 * 1024 * @param value 1025 * UntaggedValue value. 1026 * @throws UnsupportedEncodingException 1027 */ setNextValueAsUntaggedValue(Value value)1028 public void setNextValueAsUntaggedValue(Value value) { 1029 switch (value.getTag()) { 1030 case JDWPConstants.Tag.BOOLEAN_TAG: 1031 this.setNextValueAsBoolean(value.getBooleanValue()); 1032 break; 1033 case JDWPConstants.Tag.BYTE_TAG: 1034 this.setNextValueAsByte(value.getByteValue()); 1035 break; 1036 case JDWPConstants.Tag.CHAR_TAG: 1037 this.setNextValueAsChar(value.getCharValue()); 1038 break; 1039 case JDWPConstants.Tag.DOUBLE_TAG: 1040 this.setNextValueAsDouble(value.getDoubleValue()); 1041 break; 1042 case JDWPConstants.Tag.FLOAT_TAG: 1043 this.setNextValueAsFloat(value.getFloatValue()); 1044 break; 1045 case JDWPConstants.Tag.INT_TAG: 1046 this.setNextValueAsInt(value.getIntValue()); 1047 break; 1048 case JDWPConstants.Tag.LONG_TAG: 1049 this.setNextValueAsLong(value.getLongValue()); 1050 break; 1051 case JDWPConstants.Tag.SHORT_TAG: 1052 this.setNextValueAsShort(value.getShortValue()); 1053 break; 1054 case JDWPConstants.Tag.VOID_TAG: 1055 break; 1056 case JDWPConstants.Tag.STRING_TAG: 1057 case JDWPConstants.Tag.ARRAY_TAG: 1058 case JDWPConstants.Tag.CLASS_LOADER_TAG: 1059 case JDWPConstants.Tag.CLASS_OBJECT_TAG: 1060 case JDWPConstants.Tag.OBJECT_TAG: 1061 case JDWPConstants.Tag.THREAD_GROUP_TAG: 1062 case JDWPConstants.Tag.THREAD_TAG: 1063 this.setNextValueAsObjectID(value.getLongValue()); 1064 break; 1065 default: 1066 throw new TestErrorException("Illegal tag value = " 1067 + value.getTag()); 1068 } 1069 } 1070 1071 /** 1072 * Gets the next value of the data of the Packet as UntaggedValue 1073 * VM-sensitive value. If length is less than 8 bytes, the appropriate high 1074 * bits in the returned value can be ignored. 1075 * 1076 * @return the next value of the data of the Packet as VM-sensitive value. 1077 */ getNextValueAsUntaggedValue(byte tag)1078 public Value getNextValueAsUntaggedValue(byte tag) { 1079 switch (tag) { 1080 case JDWPConstants.Tag.BOOLEAN_TAG: 1081 return Value.createBoolean(this.getNextValueAsBoolean()); 1082 case JDWPConstants.Tag.BYTE_TAG: 1083 return Value.createByte(this.getNextValueAsByte()); 1084 case JDWPConstants.Tag.CHAR_TAG: 1085 return Value.createChar(this.getNextValueAsChar()); 1086 case JDWPConstants.Tag.DOUBLE_TAG: 1087 return Value.createDouble(this.getNextValueAsDouble()); 1088 case JDWPConstants.Tag.FLOAT_TAG: 1089 return Value.createFloat(this.getNextValueAsFloat()); 1090 case JDWPConstants.Tag.INT_TAG: 1091 return Value.createInt(this.getNextValueAsInt()); 1092 case JDWPConstants.Tag.LONG_TAG: 1093 return Value.createLong(this.getNextValueAsLong()); 1094 case JDWPConstants.Tag.SHORT_TAG: 1095 return Value.createShort(this.getNextValueAsShort()); 1096 case JDWPConstants.Tag.STRING_TAG: 1097 case JDWPConstants.Tag.ARRAY_TAG: 1098 case JDWPConstants.Tag.CLASS_LOADER_TAG: 1099 case JDWPConstants.Tag.CLASS_OBJECT_TAG: 1100 case JDWPConstants.Tag.OBJECT_TAG: 1101 case JDWPConstants.Tag.THREAD_GROUP_TAG: 1102 case JDWPConstants.Tag.THREAD_TAG: 1103 return Value.createObjectValue(tag, this.getNextValueAsObjectID()); 1104 case JDWPConstants.Tag.VOID_TAG: 1105 // no bytes to read. 1106 return null; 1107 default: 1108 throw new TestErrorException("Illegal tag value = " + tag); 1109 } 1110 } 1111 1112 /** 1113 * Sets the next value of the data of the Packet as ArrayRegion VM-sensitive 1114 * value. If length is less than 8 bytes, the appropriate high bits in the 1115 * val value will be ignored. 1116 * 1117 * @param array 1118 * ArrayRegion value. 1119 * @throws UnsupportedEncodingException 1120 */ 1121 // public void setNextValueAsArrayRegion(ArrayRegion array) throws 1122 // UnsupportedEncodingException { setNextValueAsArrayRegion(ArrayRegion array)1123 public void setNextValueAsArrayRegion(ArrayRegion array) { 1124 this.setNextValueAsByte(array.getTag()); 1125 this.setNextValueAsInt(array.getLength()); 1126 for (int i = 0; i < array.getLength(); i++) { 1127 if (isValuePrimitiveType(array.getTag())) { 1128 switch (array.getTag()) { 1129 case JDWPConstants.Tag.BOOLEAN_TAG: 1130 this.setNextValueAsBoolean(array.getValue(i) 1131 .getBooleanValue()); 1132 break; 1133 case JDWPConstants.Tag.BYTE_TAG: 1134 this.setNextValueAsByte(array.getValue(i).getByteValue()); 1135 break; 1136 case JDWPConstants.Tag.DOUBLE_TAG: 1137 this.setNextValueAsDouble(array.getValue(i) 1138 .getDoubleValue()); 1139 break; 1140 case JDWPConstants.Tag.FLOAT_TAG: 1141 this.setNextValueAsFloat(array.getValue(i).getFloatValue()); 1142 break; 1143 case JDWPConstants.Tag.INT_TAG: 1144 this.setNextValueAsInt(array.getValue(i).getIntValue()); 1145 break; 1146 case JDWPConstants.Tag.LONG_TAG: 1147 this.setNextValueAsLong(array.getValue(i).getLongValue()); 1148 break; 1149 case JDWPConstants.Tag.SHORT_TAG: 1150 this.setNextValueAsShort(array.getValue(i).getShortValue()); 1151 break; 1152 default: 1153 throw new TestErrorException("Illegal tag value = " 1154 + array.getTag()); 1155 } 1156 } else { 1157 this.setNextValueAsValue(array.getValue(i)); 1158 } 1159 } 1160 } 1161 1162 /** 1163 * Gets the next value of the data of the Packet as ArrayRegion VM-sensitive 1164 * value. If length is less than 8 bytes, the appropriate high bits in the 1165 * returned value can be ignored. 1166 * 1167 * @return the next value of the data of the Packet as VM-sensitive value. 1168 */ getNextValueAsArrayRegion()1169 public ArrayRegion getNextValueAsArrayRegion() { 1170 byte array_tag = this.getNextValueAsByte(); 1171 int array_length = this.getNextValueAsInt(); 1172 1173 ArrayRegion array = new ArrayRegion(array_tag, array_length); 1174 1175 for (int i = 0; i < array_length; i++) { 1176 if (isValuePrimitiveType(array_tag)) 1177 array.setValue(i, this.getNextValueAsUntaggedValue(array_tag)); 1178 else 1179 array.setValue(i, this.getNextValueAsValue()); 1180 } 1181 return array; 1182 } 1183 1184 /** 1185 * Gets the representation of the Packet as array of bytes in the JDWP 1186 * format including header and data sections. 1187 * 1188 * @return bytes representation of this packet 1189 */ toBytesArray()1190 public byte[] toBytesArray() { 1191 byte res[] = new byte[data.length + HEADER_SIZE]; 1192 writeAtByteArray(data.length + HEADER_SIZE, res, LENGTH_INDEX, INT_SIZE); 1193 writeAtByteArray(id, res, ID_INDEX, INT_SIZE); 1194 res[FLAGS_INDEX] = flags; 1195 System.arraycopy(data, 0, res, HEADER_SIZE, data.length); 1196 return res; 1197 } 1198 1199 /** 1200 * Reads value from array of bytes ar[] starting form index and reading size 1201 * bytes. If size is less than 8, the appropriate high bits in the resulting 1202 * long value will be zero. 1203 * 1204 * @param ar 1205 * the array of bytes where the value is read from. 1206 * @param from 1207 * index to start reading bytes. 1208 * @param size 1209 * number of bytes to read 1210 */ readFromByteArray(byte ar[], int from, int size)1211 protected static long readFromByteArray(byte ar[], int from, int size) { 1212 long res = 0; 1213 byte temp; 1214 for (int i = 0; i < size; i++) { 1215 temp = ar[from + i]; 1216 res = (res << 8) | (((long) temp) & 0xFF); 1217 } 1218 return res; 1219 } 1220 1221 /** 1222 * Tells whether the packet is reply. 1223 * 1224 * @return true if this packet is reply, false if it is command 1225 */ isReply()1226 public boolean isReply() { 1227 return (flags & REPLY_PACKET_FLAG) != 0; 1228 } 1229 1230 /** 1231 * Checks whether all data has been read from the packet. 1232 * 1233 * @return boolean 1234 */ isAllDataRead()1235 public boolean isAllDataRead() { 1236 return reading_data_index == data.length; 1237 } 1238 1239 /** 1240 * Writes value - val to the array of bytes ar[], beginning from index - to, 1241 * size of value is - size bytes. If size is less than 8, the appropriate 1242 * high bits in the val value will be ignored. 1243 * 1244 * @param val 1245 * the value, which will be written in the array. 1246 * @param ar 1247 * the array of bytes where the value is read from. 1248 * @param to 1249 * the beginning index in the array of bytes. 1250 * @param size 1251 * size of value in bytes. 1252 */ writeAtByteArray(long val, byte ar[], int to, int size)1253 protected void writeAtByteArray(long val, byte ar[], int to, int size) { 1254 for (int i = 0; i < size; i++) { 1255 ar[to + i] = (byte) (val >> 8 * (size - 1 - i)); 1256 } 1257 } 1258 1259 /** 1260 * Returns true if this bytes array can be interpreted as reply packet. 1261 * 1262 * @param p 1263 * bytes representation of packet 1264 * @return true or false 1265 */ isReply(byte[] p)1266 public static boolean isReply(byte[] p) { 1267 if (p.length < FLAGS_INDEX) 1268 return false; 1269 return (p[FLAGS_INDEX] & REPLY_PACKET_FLAG) != 0; 1270 } 1271 1272 /** 1273 * Returns packet length from header of given packet bytes. 1274 * 1275 * @param p 1276 * bytes representation of packet 1277 * @return true or false 1278 */ getPacketLength(byte[] p)1279 public static int getPacketLength(byte[] p) { 1280 return (int) readFromByteArray(p, LENGTH_INDEX, INT_SIZE); 1281 } 1282 1283 /** 1284 * Enwraps this bytes array either to ReplyPacket or EventPacket instance, 1285 * according to result of isReply(). 1286 * 1287 * @param p 1288 * bytes array to enwrap into packet 1289 * @return new created ReplyPacket or CommandPacket 1290 */ interpretPacket(byte[] p)1291 public static Packet interpretPacket(byte[] p) { 1292 if (p.length < HEADER_SIZE) 1293 throw new TestErrorException("Wrong packet"); 1294 if (Packet.isReply(p)) 1295 return new ReplyPacket(p); 1296 return new EventPacket(p); 1297 } 1298 } 1299