1 files changed, 26 insertions, 0 deletions
diff --git a/testing/web-platform/tests/xhr/resources/access-control-allow-lists.py b/testing/web-platform/tests/xhr/resources/access-control-allow-lists.py
new file mode 100644
index 0000000000..32c11a0c39
--- /dev/null
+++ b/testing/web-platform/tests/xhr/resources/access-control-allow-lists.py
@@ -0,0 +1,26 @@
+import json
+
+from wptserve.utils import isomorphic_decode
+
+def main(request, response):
+    if b"origin" in request.GET:
+        response.headers.set(b"Access-Control-Allow-Origin", request.GET[b"origin"])
+    elif b"origins" in request.GET:
+        for origin in request.GET[b"origins"].split(b','):
+            response.headers.set(b"Access-Control-Allow-Origin", request.GET[b"origin"])
+
+    if b"headers" in request.GET:
+        response.headers.set(b"Access-Control-Allow-Headers", request.GET[b"headers"])
+    if b"methods" in request.GET:
+        response.headers.set(b"Access-Control-Allow-Methods", request.GET[b"methods"])
+
+    headers = dict(request.headers)
+
+    for header in headers:
+        headers[header] = headers[header][0]
+
+    str_headers = {}
+    for key, val in headers.items():
+        str_headers[isomorphic_decode(key)] = isomorphic_decode(val)
+
+    return json.dumps(str_headers)