-#!/usr/bin/env python
+#!/usr/bin/python2
from __future__ import division
referrer = ""
def urlopen(url, offset=None):
+ if url.startswith("//"):
+ url = "http:" + url
+
global referrer
req = urllib2.Request(url)
if referrer:
p2 = line.rfind(";")
if p1 >= 0 and p2 > 0:
return json.loads(line[p1+1:p2])
+ if "ytplayer.config =" in line:
+ p1 = line.find("ytplayer.config =")
+ p2 = line.rfind(";")
+ if p1 >= 0 and p2 > 0:
+ return json.loads(line[p1+18:p2])
if "'PLAYER_CONFIG': " in line:
p1 = line.find(":")
if p1 >= 0:
convert_from_old_itag(player_config)
return player_config
+def extract_function(output, script, func_name):
+ p1 = script.find("function " + func_name + "(")
+ p2 = script.find("}", p1)
+ code = script[p1:p2+1]
+ output.append(code)
+ deps = re.findall(R"[^\.][= ]([\$0-9a-zA-Z]+)\(", code)
+ deps = set(deps)
+ deps.remove(func_name)
+ for dep in deps:
+ extract_function(output, script, dep)
+
+def decode_signature(js_url, s):
+ script = urlopen(js_url).read()
+ func_name = re.search(R"\b([a-zA-Z]+)\([a-zA-Z]+\.s\);", script).groups()[0]
+
+ codes = []
+ extract_function(codes, script, func_name)
+
+ p = subprocess.Popen(
+ "js",
+ shell=True,
+ close_fds=True,
+ stdin=subprocess.PIPE,
+ stdout=subprocess.PIPE
+ )
+ for code in codes:
+ p.stdin.write(code + "\n")
+ p.stdin.write("console.log(%s('%s'));\n" % (func_name, s))
+ p.stdin.close()
+
+ signature = p.stdout.read().strip()
+ if p.wait() != 0:
+ raise Exception("js failed to execute: %d" % p.returncode)
+
+ return signature
+
def get_best_video(player_config):
url_data_list = player_config["args"]["url_encoded_fmt_stream_map"].split(",")
+ js_url = player_config["assets"]["js"]
best_url = None
best_quality = None
best_extension = None
for url_data in url_data_list:
url_data = urlparse.parse_qs(url_data)
- video_url = url_data["url"][0]
mimetype = url_data["type"][0].split(";")[0]
quality = url_data["quality"][0]
- signature = url_data["sig"][0]
if quality not in QUALITIES:
continue
extension = MIMETYPES[mimetype]
quality = QUALITIES.get(quality, -1)
- if best_quality is None or quality > best_quality:
- if signature:
- video_url = append_to_qs(video_url, {"signature": signature})
- best_url = video_url
- best_quality = quality
- best_extension = extension
+ if best_quality is not None and quality < best_quality:
+ continue
+
+ video_url = url_data["url"][0]
+ if "sig" in url_data:
+ signature = url_data["sig"][0]
+ else:
+ signature = decode_signature(js_url, url_data["s"][0])
+ video_url = append_to_qs(video_url, {"signature": signature})
+
+ best_url = video_url
+ best_quality = quality
+ best_extension = extension
return best_url, best_extension
if __name__ == "__main__":
- resource.setrlimit(resource.RLIMIT_AS, (MAX_MEMORY_BYTES, MAX_MEMORY_BYTES))
+### resource.setrlimit(resource.RLIMIT_AS, (MAX_MEMORY_BYTES, MAX_MEMORY_BYTES))
if os.environ.has_key("SCRIPT_NAME"):
cgimain()
else: