First version of FrontendMasters downloader actually working

youtube_dl/extractor/frontendmaster.py

@@ -1,7 +1,8 @@
 # coding: utf-8
 from __future__ import unicode_literals
 
-import json
+import sys
+
 import re
 
 from youtube_dl.utils import try_get
@@ -11,8 +12,15 @@ from ..compat import (
     compat_urlparse,
     compat_str)
 
+from ..utils import (
+    ExtractorError,
+    urlencode_postdata
+)
+
+
 class FrontEndMasterBaseIE(InfoExtractor):
     _API_BASE = 'https://api.frontendmasters.com/v1/kabuki/courses'
+    _COOKIES_BASE = 'https://api.frontendmasters.com'
 
     _supported_resolutions = {
         'low': 360,
@@ -41,29 +49,60 @@ class FrontEndMasterBaseIE(InfoExtractor):
 
 
 class FrontEndMasterIE(FrontEndMasterBaseIE):
+    IE_NAME = 'frontend-masters'
     _VALID_URL = r'https?://(?:www\.)?frontendmasters\.com/courses/(?P<courseid>[a-z\-]+)/(?P<id>[a-z\-]+)/?'
+    _LOGIN_URL = 'https://frontendmasters.com/login/'
+    _NETRC_MACHINE = 'frontend-masters'
     _TEST = {
         'url': 'https://frontendmasters.com/courses/content-strategy/introduction/',
-        'md5': 'TODO: md5 sum of the first 10241 bytes of the video file (use --test)',
+        # 'md5': 'TODO: md5 sum of the first 10241 bytes of the video file (use --test)',
         'info_dict': {
             'id': 'introduction',
             'courseid': 'content-strategy',
-            'ext': 'webm',
-            'title': 'Introduction',
-            'thumbnail': r're:^https?://.*\.jpg$',
-            # TODO more properties, either as:
-            # * A value
-            # * MD5 checksum; start the string with md5:
-            # * A regular expression; start the string with re:
-            # * Any Python type (for example int or float)
+            'ext': 'mp4',
+            'title': 'Introduction'
         }
     }
 
+    def _real_initialize(self):
+        self._login()
+
+    def _login(self):
+        (username, password) = self._get_login_info()
+        if username is None:
+            return
+
+        login_page = self._download_webpage(
+            self._LOGIN_URL, None, 'Downloading login page')
+
+        login_form = self._hidden_inputs(login_page)
+
+        login_form.update({
+            "username": username,
+            "password": password
+        })
+
+        post_url = self._search_regex(
+            r'<form[^>]+action=(["\'])(?P<url>.+?)\1', login_page,
+            'post_url', default=self._LOGIN_URL, group='url')
+
+        if not post_url.startswith('http'):
+            post_url = compat_urlparse.urljoin(self._LOGIN_URL, post_url)
+
+        response = self._download_webpage(
+            post_url, None, 'Logging in',
+            data=urlencode_postdata(login_form),
+            headers={'Content-Type': 'application/x-www-form-urlencoded'}
+        )
+
+        logout_link = self._search_regex('(Logout .*)', response, 'logout-link')
+        if not logout_link:
+            raise ExtractorError('Unable to login', expected=True)
+
     def _real_extract(self, url):
         video_id = self._match_id(url)
         course_id = self._match_course_id(url)
         json_content = self._download_course(course_id=course_id, url=url, display_id=None)
-        webpage = self._download_webpage(url, video_id)
 
         # TODO more code goes here, for example ...
         lesson_index = json_content['lessonSlugs'].index(video_id)
@@ -71,18 +110,31 @@ class FrontEndMasterIE(FrontEndMasterBaseIE):
         lesson_data = json_content['lessonData'][lesson_hash]
         lesson_source_base = lesson_data['sourceBase']
 
-        video_url_request = "%s/source?r=360&f=mp4"
+        cookies = self._get_cookies(self._COOKIES_BASE)
+        cookies_str = ";".join(["%s=%s" % (cookie.key, cookie.value) for cookie in cookies.values()])
+        video_request_url = "%s/source"
+        video_request_params = {
+            'r': 720,
+            'f': 'mp4'
+        }
+        video_request_headers = {
+            "origin": "https://frontendmasters.com",
+            "referer": lesson_source_base,
+            "cookie": cookies_str,
+            'user-agent': "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/66.0.3359.117 Safari/537.36"
+        }
 
+        video_response = self._download_json(video_request_url % lesson_source_base, video_id, query=video_request_params, headers=video_request_headers)
 
         title = lesson_data['title']
         description = json_content['description']
-
-        # title = self._html_search_regex(r'<div class="title">(.+?)</div>', webpage, 'title')
+        video_url = video_response['url']
 
         return {
             'id': video_id,
             'title': title,
-            'description': description,
+            'courseid': course_id,
+            'url': video_url
 
             # TODO more properties (see youtube_dl/extractor/common.py)
         }