# argument is an array that consists of a file descriptor with the file number
def getAllBlocks(blkFileWithNumber):
blkInfoList = []
with open(blkFileWithNumber[1], 'rb') as f:
fSize = getFileSize(f)
while f.tell() < fSize:
blkInfo = getNextBlock(f)
if blkInfo != None:
blkInfoWithFileNum = [blkFileWithNumber[0]]
blkInfoWithFileNum.extend(blkInfo)
blkInfoList.append(blkInfoWithFileNum)
return blkInfoList
# only goes back 2 files so anything over 800 could get cut off
# at 2 block files worth of data
def getLastNBlocks(n=10):
lastFile, secondToLastFile = getLastTwoFiles()
lastBlocks = getAllBlocks(lastFile)
if len(lastBlocks) < n:
secondToLastBlocks = getAllBlocks(secondToLastFile)
secondToLastBlocks.extend(lastBlocks)
lastBlocks = secondToLastBlocks
return lastBlocks[-n:]
lastNBlocks = getLastNBlocks(3)
for blk in lastNBlocks:
print blk[0], binary_to_hex(blk[1], BIGENDIAN), blk[2], blk[3]
f.seek(0,2)
result = f.tell()
f.seek(pos)
return result
def getNextBlockHash(f):
fileOffset = f.tell()
f.seek(MAGIC_NUMBER_LENGTH, 1)
blkSize = binary_to_int(f.read(BLOCK_SIZE_LENGTH), LITTLEENDIAN)
result = None
if blkSize > 0:
blkString = f.read(blkSize)
blkHdrBinary = blkString[:HEADER_LENGTH]
result = sha256(sha256(blkHdrBinary))
else:
f.seek(0,2)
return result
def getLastBlockHash(blkFile):
result = None
with open(blkFile, 'rb') as f:
fSize = getFileSize(f)
while f.tell() < fSize:
blockHash = getNextBlockHash(f)
if blockHash != None:
result = blockHash
return result
print binary_to_hex(getLastBlockHash(getLastBlockFile()), BIGENDIAN)
return result
# argument is an array that consists of a file descriptor with the file number
def getAllBlocks(blkFileWithNumber):
blkInfoList = []
with open(blkFileWithNumber[1], 'rb') as f:
fSize = getFileSize(f)
while f.tell() < fSize:
blkInfo = getNextBlock(f)
if blkInfo != None:
blkInfoWithFileNum = [blkFileWithNumber[0]]
blkInfoWithFileNum.extend(blkInfo)
blkInfoList.append(blkInfoWithFileNum)
return blkInfoList
# only goes back 2 files so anything over 800 could get cut off
# at 2 block files worth of data
def getLastNBlocks(n=10):
lastFile, secondToLastFile = getLastTwoFiles()
lastBlocks = getAllBlocks(lastFile)
if len(lastBlocks) < n:
secondToLastBlocks = getAllBlocks(secondToLastFile)
secondToLastBlocks.extend(lastBlocks)
lastBlocks = secondToLastBlocks
return lastBlocks[-n:]
lastNBlocks = getLastNBlocks(3)
for blk in lastNBlocks:
print blk[0], binary_to_hex(blk[1], BIGENDIAN), blk[2], blk[3]
