def main():
with open(sys.argv[1], 'r') as f:
with contextlib.closing(
mmap.mmap(f.fileno(), 0, access=mmap.ACCESS_READ)) as buf:
fh = FileHeader(buf, 0x0)
print "Information from file header:"
print "Format version : %d.%d" % (fh.major_version(),
fh.minor_version())
print "Flags : 0x%08x" % (fh.flags())
dirty_string = "clean"
if fh.is_dirty():
dirty_string = "dirty"
print "File is : %s" % (dirty_string)
full_string = "no"
if fh.is_full():
full_string = "yes"
print "Log is full : %s" % (full_string)
print "Current chunk : %d of %d" % (fh.current_chunk_number(),
fh.chunk_count())
print "Oldest chunk : %d" % (fh.oldest_chunk() + 1)
print "Next record# : %d" % (fh.next_record_number())
checksum_string = "fail"
if fh.calculate_checksum() == fh.checksum():
checksum_string = "pass"
print "Check sum : %s" % (checksum_string)
print ""
if fh.is_dirty():
chunk_count = sum([1 for c in fh.chunks() if c.verify()])
last_chunk = None
for chunk in fh.chunks():
if not chunk.verify():
continue
last_chunk = chunk
next_record_num = last_chunk.log_last_record_number() + 1
print "Suspected updated header values (header is dirty):"
print "Current chunk : %d of %d" % (chunk_count, chunk_count)
print "Next record# : %d" % (next_record_num)
print ""
print "Information from chunks:"
print " Chunk file (first/last) log (first/last) Header Data"
print "- ----- --------------------- --------------------- ------ ------"
for (i, chunk) in enumerate(fh.chunks(), 1):
note_string = " "
if i == fh.current_chunk_number() + 1:
note_string = "*"
elif i == fh.oldest_chunk() + 1:
note_string = ">"
if not chunk.check_magic():
if chunk.magic() == "\x00\x00\x00\x00\x00\x00\x00\x00":
print "%s %4d [EMPTY]" % (note_string, i)
else:
print "%s %4d [INVALID]" % (note_string, i)
continue
header_checksum_string = "fail"
if chunk.calculate_header_checksum() == chunk.header_checksum(
):
header_checksum_string = "pass"
data_checksum_string = "fail"
if chunk.calculate_data_checksum() == chunk.data_checksum():
data_checksum_string = "pass"
print "%s %4d %8d %8d %8d %8d %s %s" % \
(note_string,
i,
chunk.file_first_record_number(),
chunk.file_last_record_number(),
chunk.log_first_record_number(),
chunk.log_last_record_number(),
header_checksum_string,
data_checksum_string)
def main():
with open(sys.argv[1], 'r') as f:
with contextlib.closing(mmap.mmap(f.fileno(), 0,
access=mmap.ACCESS_READ)) as buf:
fh = FileHeader(buf, 0x0)
print "Information from file header:"
print "Format version : %d.%d" % (fh.major_version(),
fh.minor_version())
print "Flags : 0x%08x" % (fh.flags())
dirty_string = "clean"
if fh.is_dirty():
dirty_string = "dirty"
print "File is : %s" % (dirty_string)
full_string = "no"
if fh.is_full():
full_string = "yes"
print "Log is full : %s" % (full_string)
print "Current chunk : %d of %d" % (fh.current_chunk_number(),
fh.chunk_count())
print "Oldest chunk : %d" % (fh.oldest_chunk() + 1)
print "Next record# : %d" % (fh.next_record_number())
checksum_string = "fail"
if fh.calculate_checksum() == fh.checksum():
checksum_string = "pass"
print "Check sum : %s" % (checksum_string)
print ""
if fh.is_dirty():
chunk_count = sum([1 for c in fh.chunks() if c.verify()])
last_chunk = None
for chunk in fh.chunks():
if not chunk.verify():
continue
last_chunk = chunk
next_record_num = last_chunk.log_last_record_number() + 1
print "Suspected updated header values (header is dirty):"
print "Current chunk : %d of %d" % (chunk_count,
chunk_count)
print "Next record# : %d" % (next_record_num)
print ""
print "Information from chunks:"
print " Chunk file (first/last) log (first/last) Header Data"
print "- ----- --------------------- --------------------- ------ ------"
for (i, chunk) in enumerate(fh.chunks(), 1):
note_string = " "
if i == fh.current_chunk_number() + 1:
note_string = "*"
elif i == fh.oldest_chunk() + 1:
note_string = ">"
if not chunk.check_magic():
if chunk.magic() == "\x00\x00\x00\x00\x00\x00\x00\x00":
print "%s %4d [EMPTY]" % (note_string, i)
else:
print "%s %4d [INVALID]" % (note_string, i)
continue
header_checksum_string = "fail"
if chunk.calculate_header_checksum() == chunk.header_checksum():
header_checksum_string = "pass"
data_checksum_string = "fail"
if chunk.calculate_data_checksum() == chunk.data_checksum():
data_checksum_string = "pass"
print "%s %4d %8d %8d %8d %8d %s %s" % \
(note_string,
i,
chunk.file_first_record_number(),
chunk.file_last_record_number(),
chunk.log_first_record_number(),
chunk.log_last_record_number(),
header_checksum_string,
data_checksum_string)
