searxng/searx/engines/soundcloud.py

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"""
Soundcloud (Music)
@website https://soundcloud.com
@provide-api yes (https://developers.soundcloud.com/)
@using-api yes
@results JSON
@stable yes
@parse url, title, content, publishedDate, embedded
"""
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import re
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from json import loads
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from lxml import html
from dateutil import parser
from io import StringIO
from urllib.parse import quote_plus, urlencode
from searx import logger
from searx.poolrequests import get as http_get
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# engine dependent config
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categories = ['music']
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paging = True
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# search-url
# missing attribute: user_id, app_version, app_locale
url = 'https://api-v2.soundcloud.com/'
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search_url = url + 'search?{query}'\
'&variant_ids='\
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'&facet=model'\
'&limit=20'\
'&offset={offset}'\
'&linked_partitioning=1'\
'&client_id={client_id}' # noqa
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embedded_url = '<iframe width="100%" height="166" ' +\
'scrolling="no" frameborder="no" ' +\
'data-src="https://w.soundcloud.com/player/?url={uri}"></iframe>'
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cid_re = re.compile(r'client_id:"([^"]*)"', re.I | re.U)
guest_client_id = ''
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def get_client_id():
response = http_get("https://soundcloud.com")
if response.ok:
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tree = html.fromstring(response.content)
# script_tags has been moved from /assets/app/ to /assets/ path. I
# found client_id in https://a-v2.sndcdn.com/assets/49-a0c01933-3.js
script_tags = tree.xpath("//script[contains(@src, '/assets/')]")
app_js_urls = [script_tag.get('src') for script_tag in script_tags if script_tag is not None]
# extracts valid app_js urls from soundcloud.com content
for app_js_url in app_js_urls:
# gets app_js and searches for the clientid
response = http_get(app_js_url)
if response.ok:
cids = cid_re.search(response.content.decode())
if cids is not None and len(cids.groups()):
return cids.groups()[0]
logger.warning("Unable to fetch guest client_id from SoundCloud, check parser!")
return ""
def init(engine_settings=None):
global guest_client_id
# api-key
guest_client_id = get_client_id()
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# do search-request
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def request(query, params):
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offset = (params['pageno'] - 1) * 20
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params['url'] = search_url.format(query=urlencode({'q': query}),
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offset=offset,
client_id=guest_client_id)
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return params
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# get response from search-request
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def response(resp):
results = []
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search_res = loads(resp.text)
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# parse results
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for result in search_res.get('collection', []):
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if result['kind'] in ('track', 'playlist'):
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title = result['title']
content = result['description']
publishedDate = parser.parse(result['last_modified'])
uri = quote_plus(result['uri'])
embedded = embedded_url.format(uri=uri)
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# append result
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results.append({'url': result['permalink_url'],
'title': title,
'publishedDate': publishedDate,
'embedded': embedded,
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'content': content})
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# return results
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return results