def chunkcallback(self, chunk_size, fnamestr):
order_and_data = [0, '']
expected_threshold = [chunk_size]
parsed_form = parse_chunks(fnamestr)
if parsed_form:
fname, framenum, chunks, user_or_cache = parsed_form
video_name = fname
fname = fname + '.' + framenum
video_dirname = 'video-' + video_name
dirname = video_dirname + '/' + fname + '.dir'
print "HIHIHIHI"
try:
os.mkdir(video_dirname)
except:
pass
try:
os.mkdir(dirname)
except:
pass
def helper(data):
if order_and_data[0] >= len(chunks):
pass
else:
filestr = dirname + '/' + fname + '.' + str(chunks[order_and_data[0]]).zfill(2) + '_40.chunk'
total_curr_bytes = len(order_and_data[1]) + len(data)
extra_bytes = total_curr_bytes - expected_threshold[0]
if extra_bytes < 0: # expecting more tcp packets
order_and_data[1] = ''.join([order_and_data[1], data])
else:
trunc_data = data
if extra_bytes > 0:
trunc_data = data[:len(data)-extra_bytes]
datastring = ''.join([order_and_data[1], trunc_data])
if DEBUGGING_MSG:
outputStr = "Writing %s (actual: %d, expected: %d, totalCurrBytes: %d).\n" % \
(filestr, len(datastring), chunk_size, total_curr_bytes)
sys.stdout.write(outputStr)
sys.stdout.flush()
file_to_write = open(filestr, 'wb')
file_to_write.write(datastring)
file_to_write.close()
# reset
order_and_data[1] = '' # new data string
order_and_data[0] += 1 # new file extension
if extra_bytes > 0:
order_and_data[1] = data[len(data)-extra_bytes:]
if len(chunks) == 0:
# If empty chunks, just do nothing with received data from RETR.
return lambda data : None
else:
# Save received chunks to files inside directory.
return helper
def ftp_RETR(self, file):
"""Retrieve the specified file (transfer from the server to the
client).
Accepts filestrings of the form:
chunk-<filename>.<ext>&<framenum>/<chunknum>
file-<filename>
"""
parsedform = parse_chunks(file)
if parsedform:
filename, framenum, chunks, user_or_cache = parsedform
each_chunk_size = self.movie_LUT.chunk_size_lookup(filename)
## Check ID & Log appropriately
if user_or_cache == 1:
log_load('user', int(each_chunk_size) * len(chunks))
else:
log_load('cache', int(each_chunk_size) * len(chunks))
try:
# filename should be prefixed by "file-" in order to be valid.
# frame number is expected to exist for this cache.
chunksdir = 'video-' + filename
framedir = filename + '.' + framenum + '.dir'
path = self.movies_path + '/' + chunksdir + '/' + framedir
# get chunks list and open up all files
files = self.get_chunk_files(path, chunks)
# if DEBUGGING_MSG:
# print "chunks requested:", chunks
# print 'chunksdir', chunksdir
# print 'framedir', framedir
# print 'path', path
except OSError, err:
why = ftpserver._strerror(err)
self.respond('550 %s.' % why)
producer = self.chunkproducer(files, self._current_type)
self.push_dtp_data(producer, isproducer=True, file=None, cmd="RETR")
return
