fix handling of latin1-encoded utf-8 path from WSGI server

Author: raylu

pigwig/pigwig.py

@@ -155,7 +155,7 @@ def __call__(self, environ: dict, start_response: Callable) -> Iterable[bytes]:
 	def build_request(self, environ: dict) -> tuple[Request, Exception | None]:
 		""" builds :class:`.Response` objects. for internal use. """
 		method = environ['REQUEST_METHOD']
-		path = environ['PATH_INFO']
+		path = environ['PATH_INFO'].encode('latin-1').decode('utf-8') # https://github.com/python/cpython/issues/60883
 		query: Mapping[str, list[str] | str] = {}
 		headers = HTTPHeaders()
 		cookies = http.cookies.SimpleCookie()

pigwig/tests/test_pigwig.py

@@ -13,21 +13,21 @@ def test_build_request(self):
 		app = PigWig([])
 		environ = {
 			'REQUEST_METHOD': 'test method',
-			'PATH_INFO': 'test path?a=1&b=2&b=3',
+			'PATH_INFO': 'test path?a=1&b=2&b=3&c=\xe4\xbd\xa0\xe5\xa5\xbd',
 			'HTTP_COOKIE': 'a=1; a="2"',
 			'wsgi.input': None,
 		}
 		req, err = app.build_request(environ)
 		self.assertIsNone(err)
 		self.assertEqual(req.method, 'test method')
-		self.assertEqual(req.path, 'test path?a=1&b=2&b=3')
+		self.assertEqual(req.path, 'test path?a=1&b=2&b=3&c=你好')
 		self.assertEqual(req.query, {})
 		self.assertEqual(req.cookies['a'].value, '2')
 
-		environ['QUERY_STRING'] = 'a=1&b=2&b=3'
+		environ['QUERY_STRING'] = 'a=1&b=2&b=3&c=你好'
 		req, err = app.build_request(environ)
 		self.assertIsNone(err)
-		self.assertEqual(req.query, {'a': '1', 'b': ['2', '3']})
+		self.assertEqual(req.query, {'a': '1', 'b': ['2', '3'], 'c': '你好'})
 
 		environ['CONTENT_TYPE'] = 'application/json; charset=utf8'
 		environ['wsgi.input'] = io.BytesIO(b'{"a": 1, "a": NaN}')