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-rw-r--r--youtube_dl/extractor/bandcamp.py54
1 files changed, 54 insertions, 0 deletions
diff --git a/youtube_dl/extractor/bandcamp.py b/youtube_dl/extractor/bandcamp.py
new file mode 100644
index 000000000..dcf6721ee
--- /dev/null
+++ b/youtube_dl/extractor/bandcamp.py
@@ -0,0 +1,54 @@
+import json
+import re
+
+from .common import InfoExtractor
+from ..utils import (
+ ExtractorError,
+)
+
+
+class BandcampIE(InfoExtractor):
+ _VALID_URL = r'http://.*?\.bandcamp\.com/track/(?P<title>.*)'
+
+ def _real_extract(self, url):
+ mobj = re.match(self._VALID_URL, url)
+ title = mobj.group('title')
+ webpage = self._download_webpage(url, title)
+ # We get the link to the free download page
+ m_download = re.search(r'freeDownloadPage: "(.*?)"', webpage)
+ if m_download is None:
+ raise ExtractorError(u'No free songs found')
+
+ download_link = m_download.group(1)
+ id = re.search(r'var TralbumData = {(.*?)id: (?P<id>\d*?)$',
+ webpage, re.MULTILINE|re.DOTALL).group('id')
+
+ download_webpage = self._download_webpage(download_link, id,
+ 'Downloading free downloads page')
+ # We get the dictionary of the track from some javascrip code
+ info = re.search(r'items: (.*?),$',
+ download_webpage, re.MULTILINE).group(1)
+ info = json.loads(info)[0]
+ # We pick mp3-320 for now, until format selection can be easily implemented.
+ mp3_info = info[u'downloads'][u'mp3-320']
+ # If we try to use this url it says the link has expired
+ initial_url = mp3_info[u'url']
+ re_url = r'(?P<server>http://(.*?)\.bandcamp\.com)/download/track\?enc=mp3-320&fsig=(?P<fsig>.*?)&id=(?P<id>.*?)&ts=(?P<ts>.*)$'
+ m_url = re.match(re_url, initial_url)
+ #We build the url we will use to get the final track url
+ # This url is build in Bandcamp in the script download_bunde_*.js
+ 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'))
+ final_url_webpage = self._download_webpage(request_url, id, 'Requesting download url')
+ # If we could correctly generate the .rand field the url would be
+ #in the "download_url" key
+ final_url = re.search(r'"retry_url":"(.*?)"', final_url_webpage).group(1)
+
+ track_info = {'id':id,
+ 'title' : info[u'title'],
+ 'ext' : 'mp3',
+ 'url' : final_url,
+ 'thumbnail' : info[u'thumb_url'],
+ 'uploader' : info[u'artist']
+ }
+
+ return [track_info]