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Merge pull request #35 from nicksavers/master 

Use RLP constant instead of magic number
This commit is contained in:
romanman 2014-06-22 13:07:01 +01:00
parent 0f3b7558f5 e744a5b718
commit 6a257fb630
1 changed files with 420 additions and 408 deletions
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828
ethereumj-core/src/main/java/org/ethereum/util/RLP.java
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@ -86,7 +86,7 @@ public class RLP {
* \xb9\x04\x00 followed by the string. The range of the first byte is thus
* [0xb8, 0xbf].
*/
private static int OFFSET_LONG_ITEM = 0xb8;
private static int OFFSET_LONG_ITEM = 0xb7;
/*
* If the total payload of a list (i.e. the combined length of all its
@ -112,388 +112,406 @@ public class RLP {
* ******************************************************/
private static byte decodeOneByteItem(byte[] data, int index) {
// null item
if ((data[index] & 0xFF) == OFFSET_SHORT_ITEM) {
return (byte) (data[index] - OFFSET_SHORT_ITEM);
}
// single byte item
if ((data[index] & 0xFF) < OFFSET_SHORT_ITEM) {
return (byte) (data[index]);
}
// single byte item
if ((data[index] & 0xFF) == OFFSET_SHORT_ITEM+1) {
return (byte) (data[index + 1]);
}
return 0;
}
// null item
if ((data[index] & 0xFF) == OFFSET_SHORT_ITEM) {
return (byte) (data[index] - OFFSET_SHORT_ITEM);
}
// single byte item
if ((data[index] & 0xFF) < OFFSET_SHORT_ITEM) {
return (byte) (data[index]);
}
// single byte item
if ((data[index] & 0xFF) == OFFSET_SHORT_ITEM + 1) {
return (byte) (data[index + 1]);
}
return 0;
}
public static int decodeInt(byte[] data, int index) {
public static int decodeInt(byte[] data, int index) {
int value = 0;
int value = 0;
if ((data[index] & 0xFF) > OFFSET_SHORT_ITEM && (data[index] & 0xFF) < 0xB7) {
if ((data[index] & 0xFF) > OFFSET_SHORT_ITEM
&& (data[index] & 0xFF) < OFFSET_LONG_ITEM) {
byte length = (byte) (data[index] - OFFSET_SHORT_ITEM);
byte pow = (byte) (length - 1);
for (int i = 1; i <= length; ++i) {
value += data[index + i] << (8 * pow);
pow--;
}
} else {
throw new RuntimeException("wrong decode attempt");
}
return value;
}
byte length = (byte) (data[index] - OFFSET_SHORT_ITEM);
byte pow = (byte) (length - 1);
for (int i = 1; i <= length; ++i) {
value += data[index + i] << (8 * pow);
pow--;
}
} else {
throw new RuntimeException("wrong decode attempt");
}
return value;
}
private static short decodeShort(byte[] data, int index) {
private static short decodeShort(byte[] data, int index) {
short value = 0;
short value = 0;
if ((data[index] & 0xFF) > OFFSET_SHORT_ITEM && (data[index] & 0xFF) < 0xB7) {
byte length = (byte) (data[index] - OFFSET_SHORT_ITEM);
value = ByteBuffer.wrap(data, index, length).getShort();
} else {
value = data[index];
}
return value;
}
if ((data[index] & 0xFF) > OFFSET_SHORT_ITEM
&& (data[index] & 0xFF) < OFFSET_LONG_ITEM) {
byte length = (byte) (data[index] - OFFSET_SHORT_ITEM);
value = ByteBuffer.wrap(data, index, length).getShort();
} else {
value = data[index];
}
return value;
}
private static long decodeLong(byte[] data, int index) {
private static long decodeLong(byte[] data, int index) {
long value = 0;
long value = 0;
if ((data[index] & 0xFF) > OFFSET_SHORT_ITEM && (data[index] & 0xFF) < 0xB7) {
if ((data[index] & 0xFF) > OFFSET_SHORT_ITEM
&& (data[index] & 0xFF) < OFFSET_LONG_ITEM) {
byte length = (byte) (data[index] - OFFSET_SHORT_ITEM);
byte pow = (byte) (length - 1);
for (int i = 1; i <= length; ++i) {
value += data[index + i] << (8 * pow);
pow--;
}
} else {
throw new RuntimeException("wrong decode attempt");
}
return value;
}
byte length = (byte) (data[index] - OFFSET_SHORT_ITEM);
byte pow = (byte) (length - 1);
for (int i = 1; i <= length; ++i) {
value += data[index + i] << (8 * pow);
pow--;
}
} else {
throw new RuntimeException("wrong decode attempt");
}
return value;
}
private static String decodeStringItem(byte[] data, int index) {
private static String decodeStringItem(byte[] data, int index) {
String value = null;
String value = null;
if ((data[index] & 0xFF) >= 0xB7 && (data[index] & 0xFF) < OFFSET_SHORT_LIST) {
if ((data[index] & 0xFF) >= OFFSET_LONG_ITEM
&& (data[index] & 0xFF) < OFFSET_SHORT_LIST) {
byte lengthOfLength = (byte) (data[index] - 0xB7);
int length = calcLengthRaw(lengthOfLength, data, index);
value = new String(data, index + lengthOfLength + 1, length);
byte lengthOfLength = (byte) (data[index] - OFFSET_LONG_ITEM);
int length = calcLengthRaw(lengthOfLength, data, index);
value = new String(data, index + lengthOfLength + 1, length);
} else if ((data[index] & 0xFF) > OFFSET_SHORT_ITEM && (data[index] & 0xFF) < 0xB7) {
} else if ((data[index] & 0xFF) > OFFSET_SHORT_ITEM
&& (data[index] & 0xFF) < OFFSET_LONG_ITEM) {
byte length = (byte) ((data[index] & 0xFF) - OFFSET_SHORT_ITEM);
value = new String(data, index + 1, length);
byte length = (byte) ((data[index] & 0xFF) - OFFSET_SHORT_ITEM);
value = new String(data, index + 1, length);
} else {
throw new RuntimeException("wrong decode attempt");
}
return value;
}
} else {
throw new RuntimeException("wrong decode attempt");
}
return value;
}
private static byte[] decodeItemBytes(byte[] data, int index) {
private static byte[] decodeItemBytes(byte[] data, int index) {
byte[] value = null;
int length = 0;
byte[] value = null;
int length = 0;
if ((data[index] & 0xFF) >= 0xB7 && (data[index] & 0xFF) < OFFSET_SHORT_LIST) {
if ((data[index] & 0xFF) >= OFFSET_LONG_ITEM
&& (data[index] & 0xFF) < OFFSET_SHORT_LIST) {
byte lengthOfLength = (byte) (data[index] - 0xB7);
length = calcLengthRaw(lengthOfLength, data, index);
byte lengthOfLength = (byte) (data[index] - OFFSET_LONG_ITEM);
length = calcLengthRaw(lengthOfLength, data, index);
} else if ((data[index] & 0xFF) > OFFSET_SHORT_ITEM && (data[index] & 0xFF) < 0xB7) {
} else if ((data[index] & 0xFF) > OFFSET_SHORT_ITEM
&& (data[index] & 0xFF) < OFFSET_LONG_ITEM) {
length = (byte) (data[index] - OFFSET_SHORT_ITEM);
length = (byte) (data[index] - OFFSET_SHORT_ITEM);
} else {
throw new RuntimeException("wrong decode attempt");
}
byte[] valueBytes = new byte[length];
System.arraycopy(data, index, valueBytes, 0, length);
value = valueBytes;
return value;
}
} else {
throw new RuntimeException("wrong decode attempt");
}
byte[] valueBytes = new byte[length];
System.arraycopy(data, index, valueBytes, 0, length);
value = valueBytes;
return value;
}
public static BigInteger decodeBigInteger(byte[] data, int index) {
public static BigInteger decodeBigInteger(byte[] data, int index) {
BigInteger value = null;
int length = 0;
BigInteger value = null;
int length = 0;
if ((data[index] & 0xFF) >= 0xB7 && (data[index] & 0xFF) < OFFSET_SHORT_LIST) {
if ((data[index] & 0xFF) >= OFFSET_LONG_ITEM
&& (data[index] & 0xFF) < OFFSET_SHORT_LIST) {
byte lengthOfLength = (byte) (data[index] - 0xB7);
length = calcLengthRaw(lengthOfLength, data, index);
byte lengthOfLength = (byte) (data[index] - OFFSET_LONG_ITEM);
length = calcLengthRaw(lengthOfLength, data, index);
} else if ((data[index] & 0xFF) > OFFSET_SHORT_ITEM && (data[index] & 0xFF) < 0xB7) {
} else if ((data[index] & 0xFF) > OFFSET_SHORT_ITEM
&& (data[index] & 0xFF) < OFFSET_LONG_ITEM) {
length = (byte) (data[index] - OFFSET_SHORT_ITEM);
length = (byte) (data[index] - OFFSET_SHORT_ITEM);
} else {
throw new RuntimeException("wrong decode attempt");
}
byte[] valueBytes = new byte[length];
System.arraycopy(data, index, valueBytes, 0, length);
value = new BigInteger(1, valueBytes);
return value;
}
} else {
throw new RuntimeException("wrong decode attempt");
}
byte[] valueBytes = new byte[length];
System.arraycopy(data, index, valueBytes, 0, length);
value = new BigInteger(1, valueBytes);
return value;
}
private static byte[] decodeByteArray(byte[] data, int index) {
private static byte[] decodeByteArray(byte[] data, int index) {
byte[] value = null;
int length = 0;
byte[] value = null;
int length = 0;
if ((data[index] & 0xFF) >= 0xB7 && (data[index] & 0xFF) < OFFSET_SHORT_LIST) {
if ((data[index] & 0xFF) >= OFFSET_LONG_ITEM
&& (data[index] & 0xFF) < OFFSET_SHORT_LIST) {
byte lengthOfLength = (byte) (data[index] - 0xB7);
length = calcLengthRaw(lengthOfLength, data, index);
byte lengthOfLength = (byte) (data[index] - OFFSET_LONG_ITEM);
length = calcLengthRaw(lengthOfLength, data, index);
} else if ((data[index] & 0xFF) > OFFSET_SHORT_ITEM && (data[index] & 0xFF) < 0xB7) {
} else if ((data[index] & 0xFF) > OFFSET_SHORT_ITEM
&& (data[index] & 0xFF) < OFFSET_LONG_ITEM) {
length = (byte) (data[index] - OFFSET_SHORT_ITEM);
} else {
throw new RuntimeException("wrong decode attempt");
}
byte[] valueBytes = new byte[length];
System.arraycopy(data, index, valueBytes, 0, length);
value = valueBytes;
return value;
}
length = (byte) (data[index] - OFFSET_SHORT_ITEM);
} else {
throw new RuntimeException("wrong decode attempt");
}
byte[] valueBytes = new byte[length];
System.arraycopy(data, index, valueBytes, 0, length);
value = valueBytes;
return value;
}
private static int nextItemLength(byte[] data, int index) {
private static int nextItemLength(byte[] data, int index) {
if (index >= data.length)
return -1;
if (index >= data.length)
return -1;
if ((data[index] & 0xFF) >= 0xF7) {
byte lengthOfLength = (byte) (data[index] - 0xF7);
int length = calcLength(lengthOfLength, data, index);
return length;
}
if ((data[index] & 0xFF) >= OFFSET_SHORT_LIST && (data[index] & 0xFF) < 0xF7) {
if ((data[index] & 0xFF) >= OFFSET_LONG_LIST) {
byte lengthOfLength = (byte) (data[index] - OFFSET_LONG_LIST);
byte length = (byte) ((data[index] & 0xFF) - OFFSET_SHORT_LIST);
return length;
}
if ((data[index] & 0xFF) >= 0xB7 && (data[index] & 0xFF) < OFFSET_SHORT_LIST) {
int length = calcLength(lengthOfLength, data, index);
return length;
}
if ((data[index] & 0xFF) >= OFFSET_SHORT_LIST
&& (data[index] & 0xFF) < OFFSET_LONG_LIST) {
byte lengthOfLength = (byte) (data[index] - 0xB7);
int length = calcLength(lengthOfLength, data, index);
return length;
}
if ((data[index] & 0xFF) > OFFSET_SHORT_ITEM && (data[index] & 0xFF) < 0xB7) {
byte length = (byte) ((data[index] & 0xFF) - OFFSET_SHORT_LIST);
return length;
}
if ((data[index] & 0xFF) >= OFFSET_LONG_ITEM
&& (data[index] & 0xFF) < OFFSET_SHORT_LIST) {
byte length = (byte) ((data[index] & 0xFF) - OFFSET_SHORT_ITEM);
return length;
}
if ((data[index] & 0xFF) == OFFSET_SHORT_ITEM) {
return 1;
}
if ((data[index] & 0xFF) < OFFSET_SHORT_ITEM) {
return 1;
}
return -1;
}
byte lengthOfLength = (byte) (data[index] - OFFSET_LONG_ITEM);
int length = calcLength(lengthOfLength, data, index);
return length;
}
if ((data[index] & 0xFF) > OFFSET_SHORT_ITEM
&& (data[index] & 0xFF) < OFFSET_LONG_ITEM) {
public static byte[] decodeIP4Bytes(byte[] data, int index) {
byte length = (byte) ((data[index] & 0xFF) - OFFSET_SHORT_ITEM);
return length;
}
if ((data[index] & 0xFF) == OFFSET_SHORT_ITEM) {
return 1;
}
if ((data[index] & 0xFF) < OFFSET_SHORT_ITEM) {
return 1;
}
return -1;
}
int length = (data[index] & 0xFF) - OFFSET_SHORT_LIST;
int offset = 1;
public static byte[] decodeIP4Bytes(byte[] data, int index) {
byte aByte = decodeOneByteItem(data, index + offset);
int length = (data[index] & 0xFF) - OFFSET_SHORT_LIST;
int offset = 1;
if ((data[index + offset] & 0xFF) > OFFSET_SHORT_ITEM)
offset = offset + 2;
else
offset = offset + 1;
byte bByte = decodeOneByteItem(data, index + offset);
byte aByte = decodeOneByteItem(data, index + offset);
if ((data[index + offset] & 0xFF) > OFFSET_SHORT_ITEM)
offset = offset + 2;
else
offset = offset + 1;
byte cByte = decodeOneByteItem(data, index + offset);
if ((data[index + offset] & 0xFF) > OFFSET_SHORT_ITEM)
offset = offset + 2;
else
offset = offset + 1;
byte bByte = decodeOneByteItem(data, index + offset);
if ((data[index + offset] & 0xFF) > OFFSET_SHORT_ITEM)
offset = offset + 2;
else
offset = offset + 1;
byte dByte = decodeOneByteItem(data, index + offset);
if ((data[index + offset] & 0xFF) > OFFSET_SHORT_ITEM)
offset = offset + 2;
else
offset = offset + 1;
byte cByte = decodeOneByteItem(data, index + offset);
// return IP address
return new byte[] { aByte, bByte, cByte, dByte } ;
}
if ((data[index + offset] & 0xFF) > OFFSET_SHORT_ITEM)
offset = offset + 2;
else
offset = offset + 1;
byte dByte = decodeOneByteItem(data, index + offset);
public static int getFirstListElement(byte[] payload, int pos) {
// return IP address
return new byte[] { aByte, bByte, cByte, dByte };
}
if (pos >= payload.length)
return -1;
public static int getFirstListElement(byte[] payload, int pos) {
if ((payload[pos] & 0xFF) >= 0xF7) {
byte lengthOfLength = (byte) (payload[pos] - 0xF7);
return pos + lengthOfLength + 1;
}
if ((payload[pos] & 0xFF) >= OFFSET_SHORT_LIST && (payload[pos] & 0xFF) < 0xF7) {
return pos + 1;
}
if ((payload[pos] & 0xFF) >= 0xB7 && (payload[pos] & 0xFF) < OFFSET_SHORT_LIST) {
byte lengthOfLength = (byte) (payload[pos] - 0xB7);
return pos + lengthOfLength + 1;
}
if (pos >= payload.length)
return -1;
return -1;
}
if ((payload[pos] & 0xFF) >= OFFSET_LONG_LIST) {
byte lengthOfLength = (byte) (payload[pos] - OFFSET_LONG_LIST);
return pos + lengthOfLength + 1;
}
if ((payload[pos] & 0xFF) >= OFFSET_SHORT_LIST
&& (payload[pos] & 0xFF) < OFFSET_LONG_LIST) {
return pos + 1;
}
if ((payload[pos] & 0xFF) >= OFFSET_LONG_ITEM
&& (payload[pos] & 0xFF) < OFFSET_SHORT_LIST) {
byte lengthOfLength = (byte) (payload[pos] - OFFSET_LONG_ITEM);
return pos + lengthOfLength + 1;
}
return -1;
}
public static int getNextElementIndex(byte[] payload, int pos) {
public static int getNextElementIndex(byte[] payload, int pos) {
if (pos >= payload.length)
return -1;
if (pos >= payload.length)
return -1;
if ((payload[pos] & 0xFF) >= 0xF7) {
byte lengthOfLength = (byte) (payload[pos] - 0xF7);
int length = calcLength(lengthOfLength, payload, pos);
return pos + lengthOfLength + length + 1;
}
if ((payload[pos] & 0xFF) >= OFFSET_SHORT_LIST && (payload[pos] & 0xFF) < 0xF7) {
if ((payload[pos] & 0xFF) >= OFFSET_LONG_LIST) {
byte lengthOfLength = (byte) (payload[pos] - OFFSET_LONG_LIST);
int length = calcLength(lengthOfLength, payload, pos);
return pos + lengthOfLength + length + 1;
}
if ((payload[pos] & 0xFF) >= OFFSET_SHORT_LIST
&& (payload[pos] & 0xFF) < OFFSET_LONG_LIST) {
byte length = (byte) ((payload[pos] & 0xFF) - OFFSET_SHORT_LIST);
return pos + 1 + length;
}
if ((payload[pos] & 0xFF) >= 0xB7 && (payload[pos] & 0xFF) < OFFSET_SHORT_LIST) {
byte length = (byte) ((payload[pos] & 0xFF) - OFFSET_SHORT_LIST);
return pos + 1 + length;
}
if ((payload[pos] & 0xFF) >= OFFSET_LONG_ITEM
&& (payload[pos] & 0xFF) < OFFSET_SHORT_LIST) {
byte lengthOfLength = (byte) (payload[pos] - 0xB7);
int length = calcLength(lengthOfLength, payload, pos);
return pos + lengthOfLength + length + 1;
}
if ((payload[pos] & 0xFF) > OFFSET_SHORT_ITEM && (payload[pos] & 0xFF) < 0xB7) {
byte lengthOfLength = (byte) (payload[pos] - OFFSET_LONG_ITEM);
int length = calcLength(lengthOfLength, payload, pos);
return pos + lengthOfLength + length + 1;
}
if ((payload[pos] & 0xFF) > OFFSET_SHORT_ITEM
&& (payload[pos] & 0xFF) < OFFSET_LONG_ITEM) {
byte length = (byte) ((payload[pos] & 0xFF) - OFFSET_SHORT_ITEM);
return pos + 1 + length;
}
if ((payload[pos] & 0xFF) == OFFSET_SHORT_ITEM) {
return pos + 1;
}
if ((payload[pos] & 0xFF) < OFFSET_SHORT_ITEM) {
return pos + 1;
}
return -1;
}
byte length = (byte) ((payload[pos] & 0xFF) - OFFSET_SHORT_ITEM);
return pos + 1 + length;
}
if ((payload[pos] & 0xFF) == OFFSET_SHORT_ITEM) {
return pos + 1;
}
if ((payload[pos] & 0xFF) < OFFSET_SHORT_ITEM) {
return pos + 1;
}
return -1;
}
/**
* Get exactly one message payload
*/
/**
* Get exactly one message payload
*/
public static void fullTraverse(byte[] msgData, int level, int startPos,
int endPos, int levelToIndex, Queue<Integer> index) {
try {
if (msgData == null || msgData.length == 0)
return;
int pos = startPos;
try {
while (pos < endPos) {
if (msgData == null || msgData.length == 0)
return;
int pos = startPos;
if (level == levelToIndex)
index.add(new Integer(pos));
while (pos < endPos) {
// It's a list with a payload more than 55 bytes
// data[0] - 0xF7 = how many next bytes allocated
// for the length of the list
if ((msgData[pos] & 0xFF) >= 0xF7) {
if (level == levelToIndex)
index.add(new Integer(pos));
byte lengthOfLength = (byte) (msgData[pos] - 0xF7);
int length = calcLength(lengthOfLength, msgData, pos);
// It's a list with a payload more than 55 bytes
// data[0] - 0xF7 = how many next bytes allocated
// for the length of the list
if ((msgData[pos] & 0xFF) >= OFFSET_LONG_LIST) {
// now we can parse an item for data[1]..data[length]
System.out.println("-- level: [" + level
+ "] Found big list length: " + length);
byte lengthOfLength = (byte) (msgData[pos] - OFFSET_LONG_LIST);
int length = calcLength(lengthOfLength, msgData, pos);
fullTraverse(msgData, level + 1, pos + lengthOfLength + 1,
pos + lengthOfLength + length, levelToIndex, index);
// now we can parse an item for data[1]..data[length]
System.out.println("-- level: [" + level
+ "] Found big list length: " + length);
pos += lengthOfLength + length + 1;
continue;
}
// It's a list with a payload less than 55 bytes
if ((msgData[pos] & 0xFF) >= OFFSET_SHORT_LIST
&& (msgData[pos] & 0xFF) < 0xF7) {
fullTraverse(msgData, level + 1, pos + lengthOfLength + 1,
pos + lengthOfLength + length, levelToIndex, index);
byte length = (byte) ((msgData[pos] & 0xFF) - OFFSET_SHORT_LIST);
pos += lengthOfLength + length + 1;
continue;
}
// It's a list with a payload less than 55 bytes
if ((msgData[pos] & 0xFF) >= OFFSET_SHORT_LIST
&& (msgData[pos] & 0xFF) < OFFSET_LONG_LIST) {
System.out.println("-- level: [" + level
+ "] Found small list length: " + length);
byte length = (byte) ((msgData[pos] & 0xFF) - OFFSET_SHORT_LIST);
fullTraverse(msgData, level + 1, pos + 1, pos + length + 1,
levelToIndex, index);
System.out.println("-- level: [" + level
+ "] Found small list length: " + length);
pos += 1 + length;
continue;
}
// It's an item with a payload more than 55 bytes
// data[0] - 0xB7 = how much next bytes allocated for
// the length of the string
if ((msgData[pos] & 0xFF) >= 0xB7
&& (msgData[pos] & 0xFF) < OFFSET_SHORT_LIST) {
fullTraverse(msgData, level + 1, pos + 1, pos + length + 1,
levelToIndex, index);
byte lengthOfLength = (byte) (msgData[pos] - 0xB7);
int length = calcLength(lengthOfLength, msgData, pos);
pos += 1 + length;
continue;
}
// It's an item with a payload more than 55 bytes
// data[0] - 0xB7 = how much next bytes allocated for
// the length of the string
if ((msgData[pos] & 0xFF) >= OFFSET_LONG_ITEM
&& (msgData[pos] & 0xFF) < OFFSET_SHORT_LIST) {
// now we can parse an item for data[1]..data[length]
System.out.println("-- level: [" + level
+ "] Found big item length: " + length);
pos += lengthOfLength + length + 1;
byte lengthOfLength = (byte) (msgData[pos] - OFFSET_LONG_ITEM);
int length = calcLength(lengthOfLength, msgData, pos);
continue;
}
// It's an item less than 55 bytes long,
// data[0] - 0x80 == length of the item
if ((msgData[pos] & 0xFF) > OFFSET_SHORT_ITEM
&& (msgData[pos] & 0xFF) < 0xB7) {
// now we can parse an item for data[1]..data[length]
System.out.println("-- level: [" + level
+ "] Found big item length: " + length);
pos += lengthOfLength + length + 1;
byte length = (byte) ((msgData[pos] & 0xFF) - OFFSET_SHORT_ITEM);
continue;
}
// It's an item less than 55 bytes long,
// data[0] - 0x80 == length of the item
if ((msgData[pos] & 0xFF) > OFFSET_SHORT_ITEM
&& (msgData[pos] & 0xFF) < OFFSET_LONG_ITEM) {
System.out.println("-- level: [" + level
+ "] Found small item length: " + length);
pos += 1 + length;
continue;
}
// null item
if ((msgData[pos] & 0xFF) == OFFSET_SHORT_ITEM) {
System.out.println("-- level: [" + level
+ "] Found null item: ");
pos += 1;
continue;
}
// single byte item
if ((msgData[pos] & 0xFF) < OFFSET_SHORT_ITEM) {
System.out.println("-- level: [" + level
+ "] Found single item: ");
pos += 1;
continue;
}
}
} catch (Throwable th) {
throw new RuntimeException("wire packet not parsed correctly",
th.fillInStackTrace());
}
}
byte length = (byte) ((msgData[pos] & 0xFF) - OFFSET_SHORT_ITEM);
private static int calcLength(int lengthOfLength, byte[] msgData, int pos) {
byte pow = (byte) (lengthOfLength - 1);
int length = 0;
for (int i = 1; i <= lengthOfLength; ++i) {
length += (msgData[pos + i] & 0xFF) << (8 * pow);
pow--;
}
return length;
}
System.out.println("-- level: [" + level
+ "] Found small item length: " + length);
pos += 1 + length;
continue;
}
// null item
if ((msgData[pos] & 0xFF) == OFFSET_SHORT_ITEM) {
System.out.println("-- level: [" + level
+ "] Found null item: ");
pos += 1;
continue;
}
// single byte item
if ((msgData[pos] & 0xFF) < OFFSET_SHORT_ITEM) {
System.out.println("-- level: [" + level
+ "] Found single item: ");
pos += 1;
continue;
}
}
} catch (Throwable th) {
throw new RuntimeException("wire packet not parsed correctly",
th.fillInStackTrace());
}
}
private static int calcLength(int lengthOfLength, byte[] msgData, int pos) {
byte pow = (byte) (lengthOfLength - 1);
int length = 0;
for (int i = 1; i <= lengthOfLength; ++i) {
length += (msgData[pos + i] & 0xFF) << (8 * pow);
pow--;
}
return length;
}
private static int calcLengthRaw(int lengthOfLength, byte[] msgData, int index) {
byte pow = (byte) (lengthOfLength - 1);
@ -527,133 +545,127 @@ public class RLP {
return rlpList;
}
/**
* Get exactly one message payload
*/
/**
* Get exactly one message payload
*/
private static void fullTraverse(byte[] msgData, int level, int startPos,
int endPos, int levelToIndex, RLPList rlpList) {
try {
if (msgData == null || msgData.length == 0)
return;
int pos = startPos;
try {
if (msgData == null || msgData.length == 0)
return;
int pos = startPos;
while (pos < endPos) {
// It's a list with a payload more than 55 bytes
// data[0] - 0xF7 = how many next bytes allocated
// for the length of the list
if ((msgData[pos] & 0xFF) >= 0xF7) {
while (pos < endPos) {
// It's a list with a payload more than 55 bytes
// data[0] - 0xF7 = how many next bytes allocated
// for the length of the list
if ((msgData[pos] & 0xFF) >= OFFSET_LONG_LIST) {
byte lengthOfLength = (byte) (msgData[pos] - 0xF7);
int length = calcLength(lengthOfLength, msgData, pos);
byte lengthOfLength = (byte) (msgData[pos] - OFFSET_LONG_LIST);
int length = calcLength(lengthOfLength, msgData, pos);
byte[] rlpData = new byte[lengthOfLength + length + 1];
System.arraycopy(msgData, pos, rlpData, 0, lengthOfLength
+ length + 1);
byte[] rlpData = new byte[lengthOfLength + length + 1];
System.arraycopy(msgData, pos, rlpData, 0, lengthOfLength
+ length + 1);
RLPList newLevelList = new RLPList();
newLevelList.setRLPData(rlpData);
RLPList newLevelList = new RLPList();
newLevelList.setRLPData(rlpData);
// todo: this done to get some data for testing should be
// delete
// byte[] subList = Arrays.copyOfRange(msgData, pos, pos +
// lengthOfLength + length + 1);
// System.out.println(Utils.toHexString(subList));
fullTraverse(msgData, level + 1, pos + lengthOfLength + 1,
pos + lengthOfLength + length + 1, levelToIndex,
newLevelList);
rlpList.add(newLevelList);
fullTraverse(msgData, level + 1, pos + lengthOfLength + 1,
pos + lengthOfLength + length + 1, levelToIndex,
newLevelList);
rlpList.add(newLevelList);
pos += lengthOfLength + length + 1;
continue;
}
// It's a list with a payload less than 55 bytes
if ((msgData[pos] & 0xFF) >= OFFSET_SHORT_LIST
&& (msgData[pos] & 0xFF) < OFFSET_LONG_LIST) {
pos += lengthOfLength + length + 1;
continue;
}
// It's a list with a payload less than 55 bytes
if ((msgData[pos] & 0xFF) >= OFFSET_SHORT_LIST
&& (msgData[pos] & 0xFF) < 0xF7) {
byte length = (byte) ((msgData[pos] & 0xFF) - OFFSET_SHORT_LIST);
byte length = (byte) ((msgData[pos] & 0xFF) - OFFSET_SHORT_LIST);
byte[] rlpData = new byte[length + 1];
System.arraycopy(msgData, pos, rlpData, 0, length + 1);
byte[] rlpData = new byte[length + 1];
System.arraycopy(msgData, pos, rlpData, 0, length + 1);
RLPList newLevelList = new RLPList();
newLevelList.setRLPData(rlpData);
RLPList newLevelList = new RLPList();
newLevelList.setRLPData(rlpData);
if (length > 0)
fullTraverse(msgData, level + 1, pos + 1, pos + length
+ 1, levelToIndex, newLevelList);
rlpList.add(newLevelList);
if (length > 0)
fullTraverse(msgData, level + 1, pos + 1, pos + length
+ 1, levelToIndex, newLevelList);
rlpList.add(newLevelList);
pos += 1 + length;
continue;
}
// It's an item with a payload more than 55 bytes
// data[0] - 0xB7 = how much next bytes allocated for
// the length of the string
if ((msgData[pos] & 0xFF) >= OFFSET_LONG_ITEM
&& (msgData[pos] & 0xFF) < OFFSET_SHORT_LIST) {
pos += 1 + length;
continue;
}
// It's an item with a payload more than 55 bytes
// data[0] - 0xB7 = how much next bytes allocated for
// the length of the string
if ((msgData[pos] & 0xFF) >= 0xB7
&& (msgData[pos] & 0xFF) < OFFSET_SHORT_LIST) {
byte lengthOfLength = (byte) (msgData[pos] - OFFSET_LONG_ITEM);
int length = calcLength(lengthOfLength, msgData, pos);
byte lengthOfLength = (byte) (msgData[pos] - 0xB7);
int length = calcLength(lengthOfLength, msgData, pos);
// now we can parse an item for data[1]..data[length]
byte[] item = new byte[length];
System.arraycopy(msgData, pos + lengthOfLength + 1, item,
0, length);
// now we can parse an item for data[1]..data[length]
byte[] item = new byte[length];
System.arraycopy(msgData, pos + lengthOfLength + 1, item,
0, length);
byte[] rlpPrefix = new byte[lengthOfLength + 1];
System.arraycopy(msgData, pos, rlpPrefix, 0,
lengthOfLength + 1);
byte[] rlpPrefix = new byte[lengthOfLength + 1];
System.arraycopy(msgData, pos, rlpPrefix, 0,
lengthOfLength + 1);
RLPItem rlpItem = new RLPItem(item);
rlpList.add(rlpItem);
pos += lengthOfLength + length + 1;
RLPItem rlpItem = new RLPItem(item);
rlpList.add(rlpItem);
pos += lengthOfLength + length + 1;
continue;
}
// It's an item less than 55 bytes long,
// data[0] - 0x80 == length of the item
if ((msgData[pos] & 0xFF) > OFFSET_SHORT_ITEM
&& (msgData[pos] & 0xFF) < OFFSET_LONG_ITEM) {
continue;
}
// It's an item less than 55 bytes long,
// data[0] - 0x80 == length of the item
if ((msgData[pos] & 0xFF) > OFFSET_SHORT_ITEM
&& (msgData[pos] & 0xFF) < 0xB7) {
byte length = (byte) ((msgData[pos] & 0xFF) - OFFSET_SHORT_ITEM);
byte length = (byte) ((msgData[pos] & 0xFF) - OFFSET_SHORT_ITEM);
byte[] item = new byte[length];
System.arraycopy(msgData, pos + 1, item, 0, length);
byte[] item = new byte[length];
System.arraycopy(msgData, pos + 1, item, 0, length);
byte[] rlpPrefix = new byte[2];
System.arraycopy(msgData, pos, rlpPrefix, 0, 2);
byte[] rlpPrefix = new byte[2];
System.arraycopy(msgData, pos, rlpPrefix, 0, 2);
RLPItem rlpItem = new RLPItem(item);
rlpList.add(rlpItem);
pos += 1 + length;
RLPItem rlpItem = new RLPItem(item);
rlpList.add(rlpItem);
pos += 1 + length;
continue;
}
// null item
if ((msgData[pos] & 0xFF) == OFFSET_SHORT_ITEM) {
byte[] item = new byte[0];
RLPItem rlpItem = new RLPItem(item);
rlpList.add(rlpItem);
pos += 1;
continue;
}
// single byte item
if ((msgData[pos] & 0xFF) < OFFSET_SHORT_ITEM) {
continue;
}
// null item
if ((msgData[pos] & 0xFF) == OFFSET_SHORT_ITEM) {
byte[] item = new byte[0];
RLPItem rlpItem = new RLPItem(item);
rlpList.add(rlpItem);
pos += 1;
continue;
}
// single byte item
if ((msgData[pos] & 0xFF) < OFFSET_SHORT_ITEM) {
byte[] item = { (byte) (msgData[pos] & 0xFF) };
byte[] item = { (byte) (msgData[pos] & 0xFF) };
RLPItem rlpItem = new RLPItem(item);
rlpList.add(rlpItem);
pos += 1;
continue;
}
}
} catch (Exception e) {
RLPItem rlpItem = new RLPItem(item);
rlpList.add(rlpItem);
pos += 1;
continue;
}
}
} catch (Exception e) {
throw new RuntimeException("wire packet not parsed correctly", e);
}
}
}
}
/**
* Reads any RLP encoded byte-array and returns all objects as byte-array or list of byte-arrays
@ -676,7 +688,7 @@ public class RLP {
int len = prefix - OFFSET_SHORT_ITEM; // length of the encoded bytes
return new DecodeResult(pos+1+len, copyOfRange(data, pos+1, pos+1+len));
} else if (prefix < OFFSET_SHORT_LIST) {
int lenlen = prefix - OFFSET_LONG_ITEM + 1; // length of length the encoded bytes
int lenlen = prefix - OFFSET_LONG_ITEM; // length of length the encoded bytes
int lenbytes = byteArrayToInt(copyOfRange(data, pos+1, pos+1+lenlen)); // length of encoded bytes
return new DecodeResult(pos+1+lenlen+lenbytes, copyOfRange(data, pos+1+lenlen, pos+1+lenlen+lenbytes));
} else if (prefix < OFFSET_LONG_LIST) {
@ -734,7 +746,7 @@ public class RLP {
return concatenate(prefix, output);
} else {
byte[] inputAsBytes = toBytes(input);
if(inputAsBytes.length == 1) {
if (inputAsBytes.length == 1) {
return inputAsBytes;
} else {
byte[] firstByte = encodeLength(inputAsBytes.length, OFFSET_SHORT_ITEM);
@ -750,11 +762,11 @@ public class RLP {
return new byte[] { firstByte };
} else if (length < MAX_ITEM_LENGTH) {
byte[] binaryLength;
if(length > 0xFF)
if (length > 0xFF)
binaryLength = BigInteger.valueOf(length).toByteArray();
else
else
binaryLength = new byte[] { (byte) length };
byte firstByte = (byte) (binaryLength.length + offset + SIZE_THRESHOLD - 1 );
byte firstByte = (byte) (binaryLength.length + offset + SIZE_THRESHOLD - 1);
return concatenate(new byte[] { firstByte }, binaryLength);
} else {
throw new RuntimeException("Input too long");
@ -844,7 +856,7 @@ public class RLP {
// first byte = F7 + bytes.length
byte[] data = Arrays.copyOf(srcData, srcData.length + 1 + byteNum);
System.arraycopy(data, 0, data, 1 + byteNum, srcData.length);
data[0] = (byte) (0xB7 + byteNum);
data[0] = (byte) (OFFSET_LONG_ITEM + byteNum);
System.arraycopy(lenBytes, 0, data, 1, lenBytes.length);
return data;
@ -881,7 +893,7 @@ public class RLP {
}
// first byte = F7 + bytes.length
data = new byte[1 + lenBytes.length + totalLength];
data[0] = (byte) (0xF7 + byteNum);
data[0] = (byte) (OFFSET_LONG_LIST + byteNum);
System.arraycopy(lenBytes, 0, data, 1, lenBytes.length);
copyPos = lenBytes.length + 1;