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45aef472 PH |
1 | import json |
2 | import re | |
3 | ||
4 | from .common import InfoExtractor | |
5 | from ..utils import ( | |
6 | ExtractorError, | |
7 | ) | |
8 | ||
9 | ||
10 | class BandcampIE(InfoExtractor): | |
11 | _VALID_URL = r'http://.*?\.bandcamp\.com/track/(?P<title>.*)' | |
12 | ||
13 | def _real_extract(self, url): | |
14 | mobj = re.match(self._VALID_URL, url) | |
15 | title = mobj.group('title') | |
16 | webpage = self._download_webpage(url, title) | |
17 | # We get the link to the free download page | |
18 | m_download = re.search(r'freeDownloadPage: "(.*?)"', webpage) | |
19 | if m_download is None: | |
20 | raise ExtractorError(u'No free songs found') | |
21 | ||
22 | download_link = m_download.group(1) | |
23 | id = re.search(r'var TralbumData = {(.*?)id: (?P<id>\d*?)$', | |
24 | webpage, re.MULTILINE|re.DOTALL).group('id') | |
25 | ||
26 | download_webpage = self._download_webpage(download_link, id, | |
27 | 'Downloading free downloads page') | |
28 | # We get the dictionary of the track from some javascrip code | |
29 | info = re.search(r'items: (.*?),$', | |
30 | download_webpage, re.MULTILINE).group(1) | |
31 | info = json.loads(info)[0] | |
32 | # We pick mp3-320 for now, until format selection can be easily implemented. | |
33 | mp3_info = info[u'downloads'][u'mp3-320'] | |
34 | # If we try to use this url it says the link has expired | |
35 | initial_url = mp3_info[u'url'] | |
36 | re_url = r'(?P<server>http://(.*?)\.bandcamp\.com)/download/track\?enc=mp3-320&fsig=(?P<fsig>.*?)&id=(?P<id>.*?)&ts=(?P<ts>.*)$' | |
37 | m_url = re.match(re_url, initial_url) | |
38 | #We build the url we will use to get the final track url | |
39 | # This url is build in Bandcamp in the script download_bunde_*.js | |
40 | request_url = '%s/statdownload/track?enc=mp3-320&fsig=%s&id=%s&ts=%s&.rand=665028774616&.vrs=1' % (m_url.group('server'), m_url.group('fsig'), id, m_url.group('ts')) | |
41 | final_url_webpage = self._download_webpage(request_url, id, 'Requesting download url') | |
42 | # If we could correctly generate the .rand field the url would be | |
43 | #in the "download_url" key | |
44 | final_url = re.search(r'"retry_url":"(.*?)"', final_url_webpage).group(1) | |
45 | ||
46 | track_info = {'id':id, | |
47 | 'title' : info[u'title'], | |
48 | 'ext' : 'mp3', | |
49 | 'url' : final_url, | |
50 | 'thumbnail' : info[u'thumb_url'], | |
51 | 'uploader' : info[u'artist'] | |
52 | } | |
53 | ||
54 | return [track_info] |