- def construct_video_urls(self, data1, data2):
- # get sid, token
- def yk_t(s1, s2):
- ls = list(range(256))
- t = 0
- for i in range(256):
- t = (t + ls[i] + compat_ord(s1[i % len(s1)])) % 256
- ls[i], ls[t] = ls[t], ls[i]
- s = bytearray()
- x, y = 0, 0
- for i in range(len(s2)):
- y = (y + 1) % 256
- x = (x + ls[y]) % 256
- ls[x], ls[y] = ls[y], ls[x]
- s.append(compat_ord(s2[i]) ^ ls[(ls[x] + ls[y]) % 256])
- return bytes(s)
-
- sid, token = yk_t(
- b'becaf9be', base64.b64decode(data2['ep'].encode('ascii'))
- ).decode('ascii').split('_')
-
- # get oip
- oip = data2['ip']
-
- # get fileid
- string_ls = list(
- 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ/\:._-1234567890')
- shuffled_string_ls = []
- seed = data1['seed']
- N = len(string_ls)
- for ii in range(N):
- seed = (seed * 0xd3 + 0x754f) % 0x10000
- idx = seed * len(string_ls) // 0x10000
- shuffled_string_ls.append(string_ls[idx])
- del string_ls[idx]
-
- fileid_dict = {}
- for format in data1['streamtypes']:
- streamfileid = [
- int(i) for i in data1['streamfileids'][format].strip('*').split('*')]
- fileid = ''.join(
- [shuffled_string_ls[i] for i in streamfileid])
- fileid_dict[format] = fileid[:8] + '%s' + fileid[10:]
-
- def get_fileid(format, n):
- fileid = fileid_dict[format] % hex(int(n))[2:].upper().zfill(2)
- return fileid
-
- # get ep
- def generate_ep(format, n):
- fileid = get_fileid(format, n)
- ep_t = yk_t(
- b'bf7e5f01',
- ('%s_%s_%s' % (sid, fileid, token)).encode('ascii')
- )
- ep = base64.b64encode(ep_t).decode('ascii')
- return ep
-
- # generate video_urls
- video_urls_dict = {}
- for format in data1['streamtypes']:
- video_urls = []
- for dt in data1['segs'][format]:
- n = str(int(dt['no']))
- param = {
- 'K': dt['k'],
- 'hd': self.get_hd(format),
- 'myp': 0,
- 'ts': dt['seconds'],
- 'ypp': 0,
- 'ctype': 12,
- 'ev': 1,
- 'token': token,
- 'oip': oip,
- 'ep': generate_ep(format, n)
- }
- video_url = \
- 'http://k.youku.com/player/getFlvPath/' + \
- 'sid/' + sid + \
- '_' + str(int(n) + 1).zfill(2) + \
- '/st/' + self.parse_ext_l(format) + \
- '/fileid/' + get_fileid(format, n) + '?' + \
- compat_urllib_parse.urlencode(param)
- video_urls.append(video_url)
- video_urls_dict[format] = video_urls
-
- return video_urls_dict
-
- def get_hd(self, fm):
- hd_id_dict = {
- 'flv': '0',
- 'mp4': '1',
- 'hd2': '2',
- 'hd3': '3',
- '3gp': '0',
- '3gphd': '1'
- }
- return hd_id_dict[fm]
-
- def parse_ext_l(self, fm):
- ext_dict = {
- 'flv': 'flv',
- 'mp4': 'mp4',
- 'hd2': 'flv',
- 'hd3': 'flv',
- '3gp': 'flv',
- '3gphd': 'mp4'
- }
- return ext_dict[fm]