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171 lines
6.3 KiB
171 lines
6.3 KiB
from __future__ import unicode_literals |
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import re |
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import json |
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import time |
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import hmac |
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import binascii |
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import hashlib |
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from .common import InfoExtractor |
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from ..compat import ( |
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compat_str, |
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) |
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from ..utils import ( |
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determine_ext, |
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ExtractorError, |
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xpath_with_ns, |
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unsmuggle_url, |
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) |
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_x = lambda p: xpath_with_ns(p, {'smil': 'http://www.w3.org/2005/SMIL21/Language'}) |
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class ThePlatformIE(InfoExtractor): |
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_VALID_URL = r'''(?x) |
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(?:https?://(?:link|player)\.theplatform\.com/[sp]/(?P<provider_id>[^/]+)/ |
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(?P<config>(?:[^/\?]+/(?:swf|config)|onsite)/select/)? |
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|theplatform:)(?P<id>[^/\?&]+)''' |
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_TEST = { |
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# from http://www.metacafe.com/watch/cb-e9I_cZgTgIPd/blackberrys_big_bold_z30/ |
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'url': 'http://link.theplatform.com/s/dJ5BDC/e9I_cZgTgIPd/meta.smil?format=smil&Tracking=true&mbr=true', |
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'info_dict': { |
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'id': 'e9I_cZgTgIPd', |
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'ext': 'flv', |
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'title': 'Blackberry\'s big, bold Z30', |
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'description': 'The Z30 is Blackberry\'s biggest, baddest mobile messaging device yet.', |
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'duration': 247, |
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}, |
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'params': { |
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# rtmp download |
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'skip_download': True, |
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}, |
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} |
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@staticmethod |
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def _sign_url(url, sig_key, sig_secret, life=600, include_qs=False): |
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flags = '10' if include_qs else '00' |
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expiration_date = '%x' % (int(time.time()) + life) |
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def str_to_hex(str): |
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return binascii.b2a_hex(str.encode('ascii')).decode('ascii') |
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def hex_to_str(hex): |
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return binascii.a2b_hex(hex) |
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relative_path = url.split('http://link.theplatform.com/s/')[1].split('?')[0] |
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clear_text = hex_to_str(flags + expiration_date + str_to_hex(relative_path)) |
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checksum = hmac.new(sig_key.encode('ascii'), clear_text, hashlib.sha1).hexdigest() |
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sig = flags + expiration_date + checksum + str_to_hex(sig_secret) |
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return '%s&sig=%s' % (url, sig) |
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def _real_extract(self, url): |
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url, smuggled_data = unsmuggle_url(url, {}) |
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mobj = re.match(self._VALID_URL, url) |
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provider_id = mobj.group('provider_id') |
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video_id = mobj.group('id') |
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if not provider_id: |
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provider_id = 'dJ5BDC' |
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if smuggled_data.get('force_smil_url', False): |
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smil_url = url |
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elif mobj.group('config'): |
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config_url = url + '&form=json' |
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config_url = config_url.replace('swf/', 'config/') |
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config_url = config_url.replace('onsite/', 'onsite/config/') |
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config = self._download_json(config_url, video_id, 'Downloading config') |
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smil_url = config['releaseUrl'] + '&format=SMIL&formats=MPEG4&manifest=f4m' |
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else: |
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smil_url = ('http://link.theplatform.com/s/{0}/{1}/meta.smil?' |
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'format=smil&mbr=true'.format(provider_id, video_id)) |
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sig = smuggled_data.get('sig') |
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if sig: |
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smil_url = self._sign_url(smil_url, sig['key'], sig['secret']) |
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meta = self._download_xml(smil_url, video_id) |
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try: |
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error_msg = next( |
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n.attrib['abstract'] |
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for n in meta.findall(_x('.//smil:ref')) |
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if n.attrib.get('title') == 'Geographic Restriction' or n.attrib.get('title') == 'Expired') |
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except StopIteration: |
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pass |
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else: |
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raise ExtractorError(error_msg, expected=True) |
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info_url = 'http://link.theplatform.com/s/{0}/{1}?format=preview'.format(provider_id, video_id) |
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info_json = self._download_webpage(info_url, video_id) |
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info = json.loads(info_json) |
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subtitles = {} |
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captions = info.get('captions') |
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if isinstance(captions, list): |
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for caption in captions: |
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lang, src, mime = caption.get('lang', 'en'), caption.get('src'), caption.get('type') |
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subtitles[lang] = [{ |
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'ext': 'srt' if mime == 'text/srt' else 'ttml', |
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'url': src, |
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}] |
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head = meta.find(_x('smil:head')) |
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body = meta.find(_x('smil:body')) |
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f4m_node = body.find(_x('smil:seq//smil:video')) |
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if f4m_node is not None and '.f4m' in f4m_node.attrib['src']: |
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f4m_url = f4m_node.attrib['src'] |
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if 'manifest.f4m?' not in f4m_url: |
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f4m_url += '?' |
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# the parameters are from syfy.com, other sites may use others, |
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# they also work for nbc.com |
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f4m_url += '&g=UXWGVKRWHFSP&hdcore=3.0.3' |
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formats = self._extract_f4m_formats(f4m_url, video_id) |
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else: |
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formats = [] |
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switch = body.find(_x('smil:switch')) |
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if switch is not None: |
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base_url = head.find(_x('smil:meta')).attrib['base'] |
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for f in switch.findall(_x('smil:video')): |
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attr = f.attrib |
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width = int(attr['width']) |
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height = int(attr['height']) |
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vbr = int(attr['system-bitrate']) // 1000 |
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format_id = '%dx%d_%dk' % (width, height, vbr) |
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formats.append({ |
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'format_id': format_id, |
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'url': base_url, |
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'play_path': 'mp4:' + attr['src'], |
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'ext': 'flv', |
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'width': width, |
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'height': height, |
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'vbr': vbr, |
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}) |
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else: |
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switch = body.find(_x('smil:seq//smil:switch')) |
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for f in switch.findall(_x('smil:video')): |
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attr = f.attrib |
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vbr = int(attr['system-bitrate']) // 1000 |
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ext = determine_ext(attr['src']) |
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if ext == 'once': |
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ext = 'mp4' |
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formats.append({ |
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'format_id': compat_str(vbr), |
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'url': attr['src'], |
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'vbr': vbr, |
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'ext': ext, |
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}) |
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self._sort_formats(formats) |
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return { |
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'id': video_id, |
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'title': info['title'], |
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'subtitles': subtitles, |
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'formats': formats, |
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'description': info['description'], |
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'thumbnail': info['defaultThumbnailUrl'], |
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'duration': info['duration'] // 1000, |
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}
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