mirror of
https://github.com/gravitational/teleport.git
synced 2026-11-01 13:39:37 +08:00
61 lines
1.6 KiB
Go
61 lines
1.6 KiB
Go
// Copyright 2021 Gravitational, Inc
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package webauthn
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import (
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"net/url"
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"strings"
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"github.com/gravitational/trace"
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"github.com/gravitational/teleport/lib/utils"
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)
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func validateOrigin(origin, rpID string) error {
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parsedOrigin, err := url.Parse(origin)
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if err != nil {
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return trace.BadParameter("origin is not a valid URL: %v", err)
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}
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host, err := utils.Host(parsedOrigin.Host)
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if err != nil {
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return trace.BadParameter("extracting host from origin: %v", err)
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}
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// TODO(codingllama): Check origin against the public addresses of Proxies and
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// Auth Servers
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// Accept origins whose host matches the RPID.
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if host == rpID {
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return nil
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}
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// Accept origins whose host is a subdomain of RPID.
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originParts := strings.Split(host, ".")
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rpParts := strings.Split(rpID, ".")
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if len(originParts) <= len(rpParts) {
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return trace.BadParameter("origin doesn't match RPID")
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}
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i := len(originParts) - 1
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j := len(rpParts) - 1
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for j >= 0 {
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if originParts[i] != rpParts[j] {
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return trace.BadParameter("origin doesn't match RPID")
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}
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i--
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j--
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}
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return nil
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}
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