Apply fix for "403 Client Error" by applying pending https://github.com/derrod/legendary/pull/477

rare/lgndr/core.py

@@ -1,3 +1,4 @@
+from hashlib import sha1
 from multiprocessing import Queue
 
 # On Windows the monkeypatching of `run_real` below doesn't work like on Linux
@@ -27,6 +28,30 @@ class LegendaryCore(LegendaryCoreReal):
     # def get_installed_game(self, app_name, skip_sync=True) -> InstalledGame:
     #     return super(LegendaryCore, self).get_installed_game(app_name, skip_sync)
 
+    # FIXME: delete this when legendary merges https://github.com/derrod/legendary/pull/477
+    def get_cdn_manifest(self, game, platform='Windows', disable_https=False):
+        manifest_urls, base_urls, manifest_hash = self.get_cdn_urls(game, platform)
+
+        if disable_https:
+            manifest_urls = [url.replace('https://', 'http://') for url in manifest_urls]
+
+        manifest_bytes = None
+        for url in manifest_urls:
+            self.log.debug(f'Trying to download manifest from {url} ...')
+            r = self.egs.unauth_session.get(url)
+            if r.ok:
+                manifest_bytes = r.content
+                break
+            else:
+                self.log.warning(f'Unable to download manifest from {url}, trying next one ...')
+        if not manifest_bytes:
+            raise ValueError('Unable to get manifest data from any CDN URL')
+
+        if sha1(manifest_bytes).hexdigest() != manifest_hash:
+            raise ValueError('Manifest sha hash mismatch!')
+
+        return manifest_bytes, base_urls
+
     def prepare_download(self, game: Game, base_game: Game = None, base_path: str = '',
                          status_q: Queue = None, max_shm: int = 0, max_workers: int = 0,
                          force: bool = False, disable_patching: bool = False,