Make extractor-designated impersonation override --impersonate (#13792)

Fix 32809eb2da

Authored by: bashonly

yt_dlp/downloader/common.py

@@ -495,3 +495,14 @@ def _debug_cmd(self, args, exe=None):
             exe = os.path.basename(args[0])
 
         self.write_debug(f'{exe} command line: {shell_quote(args)}')
+
+    def _get_impersonate_target(self, info_dict):
+        impersonate = info_dict.get('impersonate')
+        if impersonate is None:
+            return None
+        available_target, requested_targets = self.ydl._parse_impersonate_targets(impersonate)
+        if available_target:
+            return available_target
+        elif requested_targets:
+            self.report_warning(self.ydl._unavailable_targets_message(requested_targets))
+        return None

yt_dlp/downloader/http.py

@@ -28,8 +28,9 @@ def real_download(self, filename, info_dict):
         url = info_dict['url']
         request_data = info_dict.get('request_data', None)
         request_extensions = {}
-        if info_dict.get('impersonate') is not None:
-            request_extensions['impersonate'] = info_dict['impersonate']
+        impersonate_target = self._get_impersonate_target(info_dict)
+        if impersonate_target is not None:
+            request_extensions['impersonate'] = impersonate_target
 
         class DownloadContext(dict):
             __getattr__ = dict.get