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[theplatform] Add URL sign capability

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This commit is contained in:
Sergey M․ 2015-02-15 04:56:12 +06:00
parent 6ca7732d5e
commit 9fb2f1cd6d
1 changed files with 38 additions and 4 deletions
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42
youtube_dl/extractor/theplatform.py
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@ -2,6 +2,11 @@
import re
import json
import time
import hmac
import binascii
import hashlib
from .subtitles import SubtitlesInfoExtractor
from ..compat import (
@ -11,6 +16,7 @@
determine_ext,
ExtractorError,
xpath_with_ns,
unsmuggle_url,
)
_x = lambda p: xpath_with_ns(p, {'smil': 'http://www.w3.org/2005/SMIL21/Language'})
@ -18,7 +24,7 @@
class ThePlatformIE(SubtitlesInfoExtractor):
_VALID_URL = r'''(?x)
(?:https?://(?:link|player)\.theplatform\.com/[sp]/[^/]+/
(?:https?://(?:link|player)\.theplatform\.com/[sp]/(?P<provider_id>[^/]+)/
(?P<config>(?:[^/\?]+/(?:swf|config)|onsite)/select/)?
|theplatform:)(?P<id>[^/\?&]+)'''
@ -38,9 +44,33 @@ class ThePlatformIE(SubtitlesInfoExtractor):
},
}
@staticmethod
def _sign_url(url, sig_key, sig_secret, life=600, include_qs=False):
flags = '10' if include_qs else '00'
expiration_date = '%x' % (int(time.time()) + life)
def str_to_hex(str):
return binascii.b2a_hex(str.encode('ascii')).decode('ascii')
def hex_to_str(hex):
return binascii.a2b_hex(hex)
relative_path = url.split('http://link.theplatform.com/s/')[1].split('?')[0]
clear_text = hex_to_str(flags + expiration_date + str_to_hex(relative_path))
checksum = hmac.new(sig_key.encode('ascii'), clear_text, hashlib.sha1).hexdigest()
sig = flags + expiration_date + checksum + str_to_hex(sig_secret)
return '%s&sig=%s' % (url, sig)
def _real_extract(self, url):
url, smuggled_data = unsmuggle_url(url, {})
mobj = re.match(self._VALID_URL, url)
provider_id = mobj.group('provider_id')
video_id = mobj.group('id')
if not provider_id:
provider_id = 'dJ5BDC'
if mobj.group('config'):
config_url = url + '&form=json'
config_url = config_url.replace('swf/', 'config/')
@ -48,8 +78,12 @@ def _real_extract(self, url):
config = self._download_json(config_url, video_id, 'Downloading config')
smil_url = config['releaseUrl'] + '&format=SMIL&formats=MPEG4&manifest=f4m'
else:
smil_url = ('http://link.theplatform.com/s/dJ5BDC/{0}/meta.smil?'
'format=smil&mbr=true'.format(video_id))
smil_url = ('http://link.theplatform.com/s/{0}/{1}/meta.smil?'
'format=smil&mbr=true'.format(provider_id, video_id))
sig = smuggled_data.get('sig')
if sig:
smil_url = self._sign_url(smil_url, sig['key'], sig['secret'])
meta = self._download_xml(smil_url, video_id)
try:
@ -62,7 +96,7 @@ def _real_extract(self, url):
else:
raise ExtractorError(error_msg, expected=True)
info_url = 'http://link.theplatform.com/s/dJ5BDC/{0}?format=preview'.format(video_id)
info_url = 'http://link.theplatform.com/s/{0}/{1}?format=preview'.format(provider_id, video_id)
info_json = self._download_webpage(info_url, video_id)
info = json.loads(info_json)