Merge branch 'steven7851-patch-2'

youtube_dl/extractor/douyutv.py

@@ -3,9 +3,17 @@ from __future__ import unicode_literals
 
 import hashlib
 import time
+import uuid
+
 from .common import InfoExtractor
-from ..utils import (ExtractorError, unescapeHTML)
-from ..compat import (compat_str, compat_basestring)
+from ..compat import (
+    compat_str,
+    compat_urllib_parse_urlencode,
+)
+from ..utils import (
+    ExtractorError,
+    unescapeHTML,
+)
 
 
 class DouyuTVIE(InfoExtractor):
@@ -21,7 +29,6 @@ class DouyuTVIE(InfoExtractor):
             'description': 're:.*m7show@163\.com.*',
             'thumbnail': 're:^https?://.*\.jpg$',
             'uploader': '7师傅',
-            'uploader_id': '431925',
             'is_live': True,
         },
         'params': {
@@ -37,7 +44,6 @@ class DouyuTVIE(InfoExtractor):
             'description': 'md5:746a2f7a253966a06755a912f0acc0d2',
             'thumbnail': 're:^https?://.*\.jpg$',
             'uploader': 'douyu小漠',
-            'uploader_id': '3769985',
             'is_live': True,
         },
         'params': {
@@ -54,7 +60,6 @@ class DouyuTVIE(InfoExtractor):
             'description': 're:.*m7show@163\.com.*',
             'thumbnail': 're:^https?://.*\.jpg$',
             'uploader': '7师傅',
-            'uploader_id': '431925',
             'is_live': True,
         },
         'params': {
@@ -65,6 +70,10 @@ class DouyuTVIE(InfoExtractor):
         'only_matching': True,
     }]
 
+    # Decompile core.swf in webpage by ffdec "Search SWFs in memory". core.swf
+    # is encrypted originally, but ffdec can dump memory to get the decrypted one.
+    _API_KEY = 'A12Svb&%1UUmf@hC'
+
     def _real_extract(self, url):
         video_id = self._match_id(url)
 
@@ -75,74 +84,56 @@ class DouyuTVIE(InfoExtractor):
             room_id = self._html_search_regex(
                 r'"room_id"\s*:\s*(\d+),', page, 'room id')
 
-        config = None
-        # Douyu API sometimes returns error "Unable to load the requested class: eticket_redis_cache"
-        # Retry with different parameters - same parameters cause same errors
-        for i in range(5):
-            prefix = 'room/%s?aid=android&client_sys=android&time=%d' % (
-                room_id, int(time.time()))
-            auth = hashlib.md5((prefix + '1231').encode('ascii')).hexdigest()
-
-            config_page = self._download_webpage(
-                'http://www.douyutv.com/api/v1/%s&auth=%s' % (prefix, auth),
-                video_id)
-            try:
-                config = self._parse_json(config_page, video_id, fatal=False)
-            except ExtractorError:
-                # Wait some time before retrying to get a different time() value
-                self._sleep(1, video_id, msg_template='%(video_id)s: Error occurs. '
-                                                      'Waiting for %(timeout)s seconds before retrying')
-                continue
-            else:
-                break
-        if config is None:
-            raise ExtractorError('Unable to fetch API result')
-
-        data = config['data']
-
-        error_code = config.get('error', 0)
-        if error_code is not 0:
-            error_desc = 'Server reported error %i' % error_code
-            if isinstance(data, (compat_str, compat_basestring)):
-                error_desc += ': ' + data
-            raise ExtractorError(error_desc, expected=True)
+        room = self._download_json(
+            'http://m.douyu.com/html5/live?roomId=%s' % room_id, video_id,
+            note='Downloading room info')['data']
 
-        show_status = data.get('show_status')
         # 1 = live, 2 = offline
-        if show_status == '2':
-            raise ExtractorError(
-                'Live stream is offline', expected=True)
+        if room.get('show_status') == '2':
+            raise ExtractorError('Live stream is offline', expected=True)
+
+        tt = compat_str(int(time.time() / 60))
+        did = uuid.uuid4().hex.upper()
 
-        base_url = data['rtmp_url']
-        live_path = data['rtmp_live']
+        sign_content = ''.join((room_id, did, self._API_KEY, tt))
+        sign = hashlib.md5((sign_content).encode('utf-8')).hexdigest()
 
-        title = self._live_title(unescapeHTML(data['room_name']))
-        description = data.get('show_details')
-        thumbnail = data.get('room_src')
+        flv_data = compat_urllib_parse_urlencode({
+            'cdn': 'ws',
+            'rate': '0',
+            'tt': tt,
+            'did': did,
+            'sign': sign,
+        })
+
+        video_info = self._download_json(
+            'http://www.douyu.com/lapi/live/getPlay/%s' % room_id, video_id,
+            data=flv_data, note='Downloading video info',
+            headers={'Content-Type': 'application/x-www-form-urlencoded'})
+
+        error_code = video_info.get('error', 0)
+        if error_code is not 0:
+            raise ExtractorError(
+                '%s reported error %i' % (self.IE_NAME, error_code),
+                expected=True)
 
-        uploader = data.get('nickname')
-        uploader_id = data.get('owner_uid')
+        base_url = video_info['data']['rtmp_url']
+        live_path = video_info['data']['rtmp_live']
 
-        multi_formats = data.get('rtmp_multi_bitrate')
-        if not isinstance(multi_formats, dict):
-            multi_formats = {}
-        multi_formats['live'] = live_path
+        video_url = '%s/%s' % (base_url, live_path)
 
-        formats = [{
-            'url': '%s/%s' % (base_url, format_path),
-            'format_id': format_id,
-            'preference': 1 if format_id == 'live' else 0,
-        } for format_id, format_path in multi_formats.items()]
-        self._sort_formats(formats)
+        title = self._live_title(unescapeHTML(room['room_name']))
+        description = room.get('notice')
+        thumbnail = room.get('room_src')
+        uploader = room.get('nickname')
 
         return {
             'id': room_id,
             'display_id': video_id,
+            'url': video_url,
             'title': title,
             'description': description,
             'thumbnail': thumbnail,
             'uploader': uploader,
-            'uploader_id': uploader_id,
-            'formats': formats,
             'is_live': True,
         }