From 20218040db2b1e063191cc470ce403d35d394e2a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sergey=20M=E2=80=A4?= <dstftw@gmail.com>
Date: Tue, 5 Nov 2019 05:21:16 +0700
Subject: [PATCH] [scte] Add extractor (closes #22975)

---
 youtube_dl/extractor/extractors.py |   4 +
 youtube_dl/extractor/scte.py       | 144 +++++++++++++++++++++++++++++
 2 files changed, 148 insertions(+)
 create mode 100644 youtube_dl/extractor/scte.py

diff --git a/youtube_dl/extractor/extractors.py b/youtube_dl/extractor/extractors.py
index dd5f68ca3..9f43b284d 100644
--- a/youtube_dl/extractor/extractors.py
+++ b/youtube_dl/extractor/extractors.py
@@ -980,6 +980,10 @@ from .sbs import SBSIE
 from .screencast import ScreencastIE
 from .screencastomatic import ScreencastOMaticIE
 from .scrippsnetworks import ScrippsNetworksWatchIE
+from .scte import (
+    SCTEIE,
+    SCTECourseIE,
+)
 from .seeker import SeekerIE
 from .senateisvp import SenateISVPIE
 from .sendtonews import SendtoNewsIE
diff --git a/youtube_dl/extractor/scte.py b/youtube_dl/extractor/scte.py
new file mode 100644
index 000000000..ca1de63b6
--- /dev/null
+++ b/youtube_dl/extractor/scte.py
@@ -0,0 +1,144 @@
+from __future__ import unicode_literals
+
+import re
+
+from .common import InfoExtractor
+from ..utils import (
+    decode_packed_codes,
+    ExtractorError,
+    urlencode_postdata,
+)
+
+
+class SCTEBaseIE(InfoExtractor):
+    _LOGIN_URL = 'https://www.scte.org/SCTE/Sign_In.aspx'
+    _NETRC_MACHINE = 'scte'
+
+    def _real_initialize(self):
+        self._login()
+
+    def _login(self):
+        username, password = self._get_login_info()
+        if username is None:
+            return
+
+        login_popup = self._download_webpage(
+            self._LOGIN_URL, None, 'Downloading login popup')
+
+        def is_logged(webpage):
+            return any(re.search(p, webpage) for p in (
+                r'class=["\']welcome\b', r'>Sign Out<'))
+
+        # already logged in
+        if is_logged(login_popup):
+            return
+
+        login_form = self._hidden_inputs(login_popup)
+
+        login_form.update({
+            'ctl01$TemplateBody$WebPartManager1$gwpciNewContactSignInCommon$ciNewContactSignInCommon$signInUserName': username,
+            'ctl01$TemplateBody$WebPartManager1$gwpciNewContactSignInCommon$ciNewContactSignInCommon$signInPassword': password,
+            'ctl01$TemplateBody$WebPartManager1$gwpciNewContactSignInCommon$ciNewContactSignInCommon$RememberMe': 'on',
+        })
+
+        response = self._download_webpage(
+            self._LOGIN_URL, None, 'Logging in',
+            data=urlencode_postdata(login_form))
+
+        if '|pageRedirect|' not in response and not is_logged(response):
+            error = self._html_search_regex(
+                r'(?s)<[^>]+class=["\']AsiError["\'][^>]*>(.+?)</',
+                response, 'error message', default=None)
+            if error:
+                raise ExtractorError('Unable to login: %s' % error, expected=True)
+            raise ExtractorError('Unable to log in')
+
+
+class SCTEIE(SCTEBaseIE):
+    _VALID_URL = r'https?://learning\.scte\.org/mod/scorm/view\.php?.*?\bid=(?P<id>\d+)'
+    _TESTS = [{
+        'url': 'https://learning.scte.org/mod/scorm/view.php?id=31484',
+        'info_dict': {
+            'title': 'Introduction to DOCSIS Engineering Professional',
+            'id': '31484',
+        },
+        'playlist_count': 5,
+        'skip': 'Requires account credentials',
+    }]
+
+    def _real_extract(self, url):
+        video_id = self._match_id(url)
+
+        webpage = self._download_webpage(url, video_id)
+
+        title = self._search_regex(r'<h1>(.+?)</h1>', webpage, 'title')
+
+        context_id = self._search_regex(r'context-(\d+)', webpage, video_id)
+        content_base = 'https://learning.scte.org/pluginfile.php/%s/mod_scorm/content/8/' % context_id
+        context = decode_packed_codes(self._download_webpage(
+            '%smobile/data.js' % content_base, video_id))
+
+        data = self._parse_xml(
+            self._search_regex(
+                r'CreateData\(\s*"(.+?)"', context, 'data').replace(r"\'", "'"),
+            video_id)
+
+        entries = []
+        for asset in data.findall('.//asset'):
+            asset_url = asset.get('url')
+            if not asset_url or not asset_url.endswith('.mp4'):
+                continue
+            asset_id = self._search_regex(
+                r'video_([^_]+)_', asset_url, 'asset id', default=None)
+            if not asset_id:
+                continue
+            entries.append({
+                'id': asset_id,
+                'title': title,
+                'url': content_base + asset_url,
+            })
+
+        return self.playlist_result(entries, video_id, title)
+
+
+class SCTECourseIE(SCTEBaseIE):
+    _VALID_URL = r'https?://learning\.scte\.org/(?:mod/sub)?course/view\.php?.*?\bid=(?P<id>\d+)'
+    _TESTS = [{
+        'url': 'https://learning.scte.org/mod/subcourse/view.php?id=31491',
+        'only_matching': True,
+    }, {
+        'url': 'https://learning.scte.org/course/view.php?id=3639',
+        'only_matching': True,
+    }, {
+        'url': 'https://learning.scte.org/course/view.php?id=3073',
+        'only_matching': True,
+    }]
+
+    def _real_extract(self, url):
+        course_id = self._match_id(url)
+
+        webpage = self._download_webpage(url, course_id)
+
+        title = self._search_regex(
+            r'<h1>(.+?)</h1>', webpage, 'title', default=None)
+
+        entries = []
+        for mobj in re.finditer(
+                r'''(?x)
+                    <a[^>]+
+                        href=(["\'])
+                        (?P<url>
+                            https?://learning\.scte\.org/mod/
+                            (?P<kind>scorm|subcourse)/view\.php?(?:(?!\1).)*?
+                            \bid=\d+
+                        )
+                    ''',
+                webpage):
+            item_url = mobj.group('url')
+            if item_url == url:
+                continue
+            ie = (SCTEIE.ie_key() if mobj.group('kind') == 'scorm'
+                  else SCTECourseIE.ie_key())
+            entries.append(self.url_result(item_url, ie=ie))
+
+        return self.playlist_result(entries, course_id, title)