def __init__(self, key):
key = bytes_list(key)
data = list(range(256))
b, n = 0, len(key)
for i in range(256):
b += (data[i] + key[i%n])
b &= 0xff
data[i], data[b] = data[b], data[i]
self.c1 = self.c2 = 0
self.data = data
def extract_strings(data, keys):
fd = BytesIO(keys)
keys = [fd.read(16) for i in range(U8.read(fd))]
if not keys:
return
fd = BytesIO(data)
for i in range(U32LE.read(fd)):
msg = fd.read(U32LE.read(fd))
key = keys[i % len(keys)]
return Decryptor(key).decrypt(msg)
def _create_flv_playlist(self, template):
res = http.get(template)
json = http.json(res)
if not isinstance(json, dict):
raise PluginError("Invalid JSON response")
parsed = urlparse(template)
try:
url_template = '{0}://{1}{2}'.format(parsed.scheme, parsed.netloc,
json['template'])
segment_max = reduce(lambda i, j: i + j[0], json['fragments'], 0)
duration = json['duration']
except KeyError:
raise PluginError('Unexpected JSON response')
substreams = [
HTTPStream(self.session,
url_template.replace('$fragment$', str(i)))
for i in range(1, segment_max + 1)
]
return FLVPlaylist(self.session,
streams=substreams,
duration=duration,
skip_header=True,
flatten_timestamps=True)
def update_chunk_info(self, result):
chunk_range = result["chunkRange"]
if not chunk_range:
return
chunk_id = int(result["chunkId"])
chunk_offset = int(result["offset"])
chunk_range = dict(map(partial(map, int), chunk_range.items()))
self.chunk_ranges.update(chunk_range)
self.chunk_id_min = sorted(chunk_range)[0]
self.chunk_id_max = int(result["chunkId"])
self.chunks = [Chunk(i, self.format_chunk_url(i),
not self.chunk_id and i == chunk_id and chunk_offset)
for i in range(self.chunk_id_min, self.chunk_id_max + 1)]
if self.chunk_id is None and self.chunks:
self.chunk_id = chunk_id
def iter_segments(self):
quality = QUALITY_MAP[self.stream.quality]
for part in self.stream.parts:
duration = part.get("duration")
if not part.get("recording"):
recording = part.get("id")
extension = "part"
else:
recording = part.get("recording")
extension = "rec"
chunks = int(duration / 12) + 1
start = int(part.get("start", 0) / 12)
for sequence in range(start, chunks + start):
if self.closed:
return
self.logger.debug("Adding chunk {0}/{1}/{2} to queue",
recording, quality, sequence)
yield Chunk(recording, quality, sequence, extension)
def _create_flv_playlist(self, template):
res = http.get(template)
playlist = http.json(res, schema=_vod_playlist_schema)
parsed = urlparse(template)
url_template = "{0}://{1}{2}".format(
parsed.scheme, parsed.netloc, playlist["template"]
)
segment_max = reduce(lambda i,j: i + j[0], playlist["fragments"], 0)
substreams = [HTTPStream(self.session,
url_template.replace("$fragment$", str(i)))
for i in range(1, segment_max + 1)]
return FLVPlaylist(self.session,
duration=playlist["duration"],
flatten_timestamps=True,
skip_header=True,
streams=substreams)
def _create_flv_playlist(self, template):
res = http.get(template)
playlist = http.json(res, schema=_vod_playlist_schema)
parsed = urlparse(template)
url_template = "{0}://{1}{2}".format(
parsed.scheme, parsed.netloc, playlist["template"]
)
segment_max = reduce(lambda i,j: i+j[0], playlist["fragments"], 0)
substreams = [HTTPStream(self.session,
url_template.replace("$fragment$", str(i)))
for i in range(1, segment_max + 1)]
return FLVPlaylist(self.session,
duration=playlist["duration"],
flatten_timestamps=True,
skip_header=True,
streams=substreams)
def update_chunk_info(self, result):
chunk_range = result["chunkRange"]
if not chunk_range:
return
chunk_id = int(result["chunkId"])
chunk_offset = int(result["offset"])
chunk_range = dict(map(partial(map, int), chunk_range.items()))
self.chunk_ranges.update(chunk_range)
self.chunk_id_min = sorted(chunk_range)[0]
self.chunk_id_max = int(result["chunkId"])
self.chunks = [
Chunk(i, self.format_chunk_url(i), not self.chunk_id
and i == chunk_id and chunk_offset)
for i in range(self.chunk_id_min, self.chunk_id_max + 1)
]
if self.chunk_id is None and self.chunks:
self.chunk_id = chunk_id
def iter_segments(self):
quality = QUALITY_MAP[self.stream.quality]
for part in self.stream.parts:
duration = part.get("duration")
if not part.get("recording"):
recording = part.get("id")
extension = "part"
else:
recording = part.get("recording")
extension = "rec"
chunks = int(duration / 12) + 1
start = int(part.get("start", 0) / 12)
for sequence in range(start, chunks + start):
if self.closed:
return
self.logger.debug("Adding chunk {0}/{1}/{2} to queue",
recording,
quality,
sequence)
yield Chunk(recording, quality, sequence, extension)
def _create_flv_playlist(self, template):
res = http.get(template)
json = http.json(res)
if not isinstance(json, dict):
raise PluginError("Invalid JSON response")
parsed = urlparse(template)
try:
url_template = '{0}://{1}{2}'.format(
parsed.scheme, parsed.netloc, json['template']
)
segment_max = reduce(lambda i,j: i+j[0], json['fragments'], 0)
duration = json['duration']
except KeyError:
raise PluginError('Unexpected JSON response')
substreams = [HTTPStream(self.session,
url_template.replace('$fragment$', str(i)))
for i in range(1, segment_max + 1)]
return FLVPlaylist(self.session, streams=substreams,
duration=duration, skip_header=True,
flatten_timestamps=True)
def iter_tags(self, fd=None, buf=None, skip_header=None):
flags = U8.read(fd)
quality = flags & 15
version = flags >> 4
lookup_size = U16BE.read(fd)
enc_table = fd.read(lookup_size)
key = b""
iv = b""
for i in range(16):
key += fd.read(1)
iv += fd.read(1)
if not (key and iv):
return
dec_table = self.decrypt_data(key, iv, enc_table)
dstream = BytesIO(dec_table)
# Decode lookup table (ported from K-S-V BeatConvert.php)
while True:
flags = U8.read(dstream)
if not flags:
break
typ = flags >> 4
encrypted = (flags & 4) > 0
keyframe = (flags & 2) > 0
config = (flags & 1) > 0
time = U32BE.read(dstream)
data_length = U32BE.read(dstream)
if encrypted:
raw_length = U32BE.read(dstream)
else:
raw_length = data_length
# Decrypt encrypted tags
data = fd.read(data_length)
if encrypted:
data = self.decrypt_data(key, iv, data)
data = data[:raw_length]
# Create video tag
if typ == 1:
if version == 2:
if config:
avc = AVCVideoData(AVC_PACKET_TYPE_SEQUENCE_HEADER,
data=data)
else:
avc = AVCVideoData(AVC_PACKET_TYPE_NALU, data=data)
if keyframe:
videodata = VideoData(VIDEO_FRAME_TYPE_KEY_FRAME,
VIDEO_CODEC_ID_AVC, avc)
else:
videodata = VideoData(VIDEO_FRAME_TYPE_INTER_FRAME,
VIDEO_CODEC_ID_AVC, avc)
else:
videodata = RawData(data)
yield Tag(TAG_TYPE_VIDEO, time, videodata)
# Create audio tag
if typ == 2:
if version == 2:
if config:
aac = AACAudioData(AAC_PACKET_TYPE_SEQUENCE_HEADER,
data)
else:
aac = AACAudioData(AAC_PACKET_TYPE_RAW, data)
audiodata = AudioData(codec=AUDIO_CODEC_ID_AAC,
rate=AUDIO_RATE_44_KHZ,
bits=AUDIO_BIT_RATE_16,
type=AUDIO_TYPE_STEREO,
data=aac)
else:
audiodata = RawData(data)
yield Tag(TAG_TYPE_AUDIO, time, audiodata)
def iter_tags(self, fd=None, buf=None, skip_header=None):
flags = U8.read(fd)
quality = flags & 15
version = flags >> 4
lookup_size = U16BE.read(fd)
enc_table = fd.read(lookup_size)
key = b""
iv = b""
for i in range(16):
key += fd.read(1)
iv += fd.read(1)
if not (key and iv):
return
dec_table = self.decrypt_data(key, iv, enc_table)
dstream = BytesIO(dec_table)
# Decode lookup table (ported from K-S-V BeatConvert.php)
while True:
flags = U8.read(dstream)
if not flags:
break
typ = flags >> 4
encrypted = (flags & 4) > 0
keyframe = (flags & 2) > 0
config = (flags & 1) > 0
time = U32BE.read(dstream)
data_length = U32BE.read(dstream)
if encrypted:
raw_length = U32BE.read(dstream)
else:
raw_length = data_length
# Decrypt encrypted tags
data = fd.read(data_length)
if encrypted:
data = self.decrypt_data(key, iv, data)
data = data[:raw_length]
# Create video tag
if typ == 1:
if version == 2:
if config:
avc = AVCVideoData(AVC_PACKET_TYPE_SEQUENCE_HEADER,
data=data)
else:
avc = AVCVideoData(AVC_PACKET_TYPE_NALU, data=data)
if keyframe:
videodata = VideoData(VIDEO_FRAME_TYPE_KEY_FRAME,
VIDEO_CODEC_ID_AVC, avc)
else:
videodata = VideoData(VIDEO_FRAME_TYPE_INTER_FRAME,
VIDEO_CODEC_ID_AVC, avc)
else:
videodata = RawData(data)
yield Tag(TAG_TYPE_VIDEO, time, videodata)
# Create audio tag
if typ == 2:
if version == 2:
if config:
aac = AACAudioData(AAC_PACKET_TYPE_SEQUENCE_HEADER,
data)
else:
aac = AACAudioData(AAC_PACKET_TYPE_RAW, data)
audiodata = AudioData(codec=AUDIO_CODEC_ID_AAC,
rate=AUDIO_RATE_44_KHZ,
bits=AUDIO_BIT_RATE_16,
type=AUDIO_TYPE_STEREO,
data=aac)
else:
audiodata = RawData(data)
yield Tag(TAG_TYPE_AUDIO, time, audiodata)
