from __future__ import unicode_literals import re import json import time import hmac import binascii import hashlib from .common import InfoExtractor from ..compat import ( compat_str, ) from ..utils import ( determine_ext, ExtractorError, xpath_with_ns, unsmuggle_url, ) _x = lambda p: xpath_with_ns(p, {'smil': 'http://www.w3.org/2005/SMIL21/Language'}) class ThePlatformIE(InfoExtractor): _VALID_URL = r'''(?x) (?:https?://(?:link|player)\.theplatform\.com/[sp]/(?P[^/]+)/ (?P(?:[^/\?]+/(?:swf|config)|onsite)/select/)? |theplatform:)(?P[^/\?&]+)''' _TEST = { # from http://www.metacafe.com/watch/cb-e9I_cZgTgIPd/blackberrys_big_bold_z30/ 'url': 'http://link.theplatform.com/s/dJ5BDC/e9I_cZgTgIPd/meta.smil?format=smil&Tracking=true&mbr=true', 'info_dict': { 'id': 'e9I_cZgTgIPd', 'ext': 'flv', 'title': 'Blackberry\'s big, bold Z30', 'description': 'The Z30 is Blackberry\'s biggest, baddest mobile messaging device yet.', 'duration': 247, }, 'params': { # rtmp download 'skip_download': True, }, } @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 smuggled_data.get('force_smil_url', False): smil_url = url elif mobj.group('config'): config_url = url + '&form=json' config_url = config_url.replace('swf/', 'config/') config_url = config_url.replace('onsite/', 'onsite/config/') 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/{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: error_msg = next( n.attrib['abstract'] for n in meta.findall(_x('.//smil:ref')) if n.attrib.get('title') == 'Geographic Restriction') except StopIteration: pass else: raise ExtractorError(error_msg, expected=True) 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) subtitles = {} captions = info.get('captions') if isinstance(captions, list): for caption in captions: lang, src, mime = caption.get('lang', 'en'), caption.get('src'), caption.get('type') subtitles[lang] = [{ 'ext': 'srt' if mime == 'text/srt' else 'ttml', 'url': src, }] head = meta.find(_x('smil:head')) body = meta.find(_x('smil:body')) f4m_node = body.find(_x('smil:seq//smil:video')) if f4m_node is not None and '.f4m' in f4m_node.attrib['src']: f4m_url = f4m_node.attrib['src'] if 'manifest.f4m?' not in f4m_url: f4m_url += '?' # the parameters are from syfy.com, other sites may use others, # they also work for nbc.com f4m_url += '&g=UXWGVKRWHFSP&hdcore=3.0.3' formats = self._extract_f4m_formats(f4m_url, video_id) else: formats = [] switch = body.find(_x('smil:switch')) if switch is not None: base_url = head.find(_x('smil:meta')).attrib['base'] for f in switch.findall(_x('smil:video')): attr = f.attrib width = int(attr['width']) height = int(attr['height']) vbr = int(attr['system-bitrate']) // 1000 format_id = '%dx%d_%dk' % (width, height, vbr) formats.append({ 'format_id': format_id, 'url': base_url, 'play_path': 'mp4:' + attr['src'], 'ext': 'flv', 'width': width, 'height': height, 'vbr': vbr, }) else: switch = body.find(_x('smil:seq//smil:switch')) for f in switch.findall(_x('smil:video')): attr = f.attrib vbr = int(attr['system-bitrate']) // 1000 ext = determine_ext(attr['src']) if ext == 'once': ext = 'mp4' formats.append({ 'format_id': compat_str(vbr), 'url': attr['src'], 'vbr': vbr, 'ext': ext, }) self._sort_formats(formats) return { 'id': video_id, 'title': info['title'], 'subtitles': subtitles, 'formats': formats, 'description': info['description'], 'thumbnail': info['defaultThumbnailUrl'], 'duration': info['duration'] // 1000, }