[pluralsight] Add extractor (Closes #6090)

1 files changed, 218 insertions, 0 deletions

diff --git a/youtube_dl/extractor/pluralsight.py b/youtube_dl/extractor/pluralsight.py
new file mode 100644
index 000000000..1bdcacbaa
--- /dev/null
+++ b/youtube_dl/extractor/pluralsight.py
@@ -0,0 +1,218 @@
+from __future__ import unicode_literals
+
+import re
+import json
+
+from .common import InfoExtractor
+from ..compat import (
+    compat_str,
+    compat_urllib_parse,
+    compat_urllib_request,
+    compat_urlparse,
+)
+from ..utils import (
+    ExtractorError,
+    int_or_none,
+    parse_duration,
+)
+
+
+class PluralsightIE(InfoExtractor):
+    IE_NAME = 'pluralsight'
+    _VALID_URL = r'https?://(?:www\.)?pluralsight\.com/training/player\?author=(?P<author>[^&]+)&name=(?P<name>[^&]+)(?:&mode=live)?&clip=(?P<clip>\d+)&course=(?P<course>[^&]+)'
+    _LOGIN_URL = 'https://www.pluralsight.com/id/'
+    _ACCOUNT_CREDENTIALS_HINT = 'Use --username and --password options to provide lynda.com account credentials.'
+    _NETRC_MACHINE = 'pluralsight'
+
+    _TEST = {
+        'url': 'http://www.pluralsight.com/training/player?author=mike-mckeown&name=hosting-sql-server-windows-azure-iaas-m7-mgmt&mode=live&clip=3&course=hosting-sql-server-windows-azure-iaas',
+        'md5': '4d458cf5cf4c593788672419a8dd4cf8',
+        'info_dict': {
+            'id': 'hosting-sql-server-windows-azure-iaas-m7-mgmt-04',
+            'ext': 'mp4',
+            'title': 'Management of SQL Server - Demo Monitoring',
+            'duration': 338,
+        },
+        'skip': 'Requires pluralsight account credentials',
+    }
+
+    def _real_initialize(self):
+        self._login()
+
+    def _login(self):
+        (username, password) = self._get_login_info()
+        if username is None:
+            raise ExtractorError(
+                'Pluralsight account is required, use --username and --password options to provide account credentials.',
+                expected=True)
+
+        login_page = self._download_webpage(
+            self._LOGIN_URL, None, 'Downloading login page')
+
+        login_form = self._hidden_inputs(login_page)
+
+        login_form.update({
+            'Username': username.encode('utf-8'),
+            'Password': password.encode('utf-8'),
+        })
+
+        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)
+
+        request = compat_urllib_request.Request(
+            post_url, compat_urllib_parse.urlencode(login_form).encode('utf-8'))
+        request.add_header('Content-Type', 'application/x-www-form-urlencoded')
+
+        response = self._download_webpage(
+            request, None, 'Logging in as %s' % username)
+
+        error = self._search_regex(
+            r'<span[^>]+class="field-validation-error"[^>]*>([^<]+)</span>',
+            response, 'error message', default=None)
+        if error:
+            raise ExtractorError('Unable to login: %s' % error, expected=True)
+
+    def _real_extract(self, url):
+        mobj = re.match(self._VALID_URL, url)
+        author = mobj.group('author')
+        name = mobj.group('name')
+        clip_id = mobj.group('clip')
+        course = mobj.group('course')
+
+        display_id = '%s-%s' % (name, clip_id)
+
+        webpage = self._download_webpage(url, display_id)
+
+        collection = self._parse_json(
+            self._search_regex(
+                r'moduleCollection\s*:\s*new\s+ModuleCollection\((\[.+?\])\s*,\s*\$rootScope\)',
+                webpage, 'modules'),
+            display_id)
+
+        module, clip = None, None
+
+        for module_ in collection:
+            if module_.get('moduleName') == name:
+                module = module_
+                for clip_ in module_.get('clips', []):
+                    clip_index = clip_.get('clipIndex')
+                    if clip_index is None:
+                        continue
+                    if compat_str(clip_index) == clip_id:
+                        clip = clip_
+                        break
+
+        if not clip:
+            raise ExtractorError('Unable to resolve clip')
+
+        QUALITIES = {
+            'low': {'width': 640, 'height': 480},
+            'medium': {'width': 848, 'height': 640},
+            'high': {'width': 1024, 'height': 768},
+        }
+
+        ALLOWED_QUALITIES = (
+            ('webm', ('high',)),
+            ('mp4', ('low', 'medium', 'high',)),
+        )
+
+        formats = []
+        for ext, qualities in ALLOWED_QUALITIES:
+            for quality in qualities:
+                f = QUALITIES[quality].copy()
+                clip_post = {
+                    'a': author,
+                    'cap': 'false',
+                    'cn': clip_id,
+                    'course': course,
+                    'lc': 'en',
+                    'm': name,
+                    'mt': ext,
+                    'q': '%dx%d' % (f['width'], f['height']),
+                }
+                request = compat_urllib_request.Request(
+                    'http://www.pluralsight.com/training/Player/ViewClip',
+                    json.dumps(clip_post).encode('utf-8'))
+                request.add_header('Content-Type', 'application/json;charset=utf-8')
+                format_id = '%s-%s' % (ext, quality)
+                clip_url = self._download_webpage(
+                    request, display_id, 'Downloading %s URL' % format_id, fatal=False)
+                if not clip_url:
+                    continue
+                f.update({
+                    'url': clip_url,
+                    'ext': ext,
+                    'format_id': format_id,
+                })
+                formats.append(f)
+        self._sort_formats(formats)
+
+        # TODO: captions
+        # http://www.pluralsight.com/training/Player/ViewClip + cap = true
+        # or
+        # http://www.pluralsight.com/training/Player/Captions
+        # { a = author, cn = clip_id, lc = end, m = name }
+
+        return {
+            'id': clip['clipName'],
+            'title': '%s - %s' % (module['title'], clip['title']),
+            'duration': int_or_none(clip.get('duration')) or parse_duration(clip.get('formattedDuration')),
+            'creator': author,
+            'formats': formats
+        }
+
+
+class PluralsightCourseIE(InfoExtractor):
+    IE_NAME = 'pluralsight:course'
+    _VALID_URL = r'https?://(?:www\.)?pluralsight\.com/courses/(?P<id>[^/]+)'
+    _TEST = {
+        # Free course from Pluralsight Starter Subscription for Microsoft TechNet
+        # https://offers.pluralsight.com/technet?loc=zTS3z&prod=zOTprodz&tech=zOttechz&prog=zOTprogz&type=zSOz&media=zOTmediaz&country=zUSz
+        'url': 'http://www.pluralsight.com/courses/hosting-sql-server-windows-azure-iaas',
+        'info_dict': {
+            'id': 'hosting-sql-server-windows-azure-iaas',
+            'title': 'Hosting SQL Server in Microsoft Azure IaaS Fundamentals',
+            'description': 'md5:61b37e60f21c4b2f91dc621a977d0986',
+        },
+        'playlist_count': 31,
+    }
+
+    def _real_extract(self, url):
+        course_id = self._match_id(url)
+
+        course = self._download_json(
+            'http://www.pluralsight.com/data/course/%s' % course_id,
+            course_id, 'Downloading course JSON')
+
+        title = course['title']
+        description = course.get('description') or course.get('shortDescription')
+
+        course_data = self._download_json(
+            'http://www.pluralsight.com/data/course/content/%s' % course_id,
+            course_id, 'Downloading course data JSON')
+
+        may_not_view = 0
+
+        entries = []
+        for module in course_data:
+            for clip in module.get('clips', []):
+                if clip.get('userMayViewClip') is False:
+                    may_not_view += 1
+                    continue
+                player_parameters = clip.get('playerParameters')
+                if not player_parameters:
+                    continue
+                entries.append(self.url_result(
+                    'http://www.pluralsight.com/training/player?%s' % player_parameters,
+                    'Pluralsight'))
+
+        if may_not_view > 0:
+            self._downloader.report_warning(
+                'There are %d videos in this course that are not available for you. '
+                'Upgrade your account to get access to these videos.' % may_not_view)
+
+        return self.playlist_result(entries, course_id, title, description)