1 files changed, 42 insertions, 0 deletions
diff --git a/python/private/auth.bzl b/python/private/auth.bzl
new file mode 100644
index 0000000..39ada37
--- /dev/null
+++ b/python/private/auth.bzl
@@ -0,0 +1,42 @@
+# Copyright 2022 The Bazel Authors. All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""Helpers copied from http_file source to be reused here.
+
+The implementation below is copied directly from Bazel's implementation of `http_archive`.
+Accordingly, the return value of this function should be used identically as the `auth` parameter of `http_archive`.
+Reference: https://github.com/bazelbuild/bazel/blob/6.3.2/tools/build_defs/repo/http.bzl#L109
+"""
+
+# TODO @aignas 2023-12-18: use the following instead when available.
+# load("@bazel_tools//tools/build_defs/repo:utils.bzl", "get_auth")
+load("@bazel_tools//tools/build_defs/repo:utils.bzl", "read_netrc", "read_user_netrc", "use_netrc")
+
+def get_auth(rctx, urls):
+    """Utility for retrieving netrc-based authentication parameters for repository download rules used in python_repository.
+
+    Args:
+        rctx (repository_ctx): The repository rule's context object.
+        urls: A list of URLs from which assets will be downloaded.
+
+    Returns:
+        dict: A map of authentication parameters by URL.
+    """
+    if rctx.attr.netrc:
+        netrc = read_netrc(rctx, rctx.attr.netrc)
+    elif "NETRC" in rctx.os.environ:
+        netrc = read_netrc(rctx, rctx.os.environ["NETRC"])
+    else:
+        netrc = read_user_netrc(rctx)
+    return use_netrc(netrc, urls, rctx.attr.auth_patterns)