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Aleksa Sarai
d540e01c9b
We will have more wrappers around filepath-securejoin, and so move them to their own specific package so that we can eventually use libpathrs fairly cleanly (by swapping out the implementation). Signed-off-by: Aleksa Sarai <cyphar@cyphar.com>
35 lines
1.2 KiB
Go
35 lines
1.2 KiB
Go
// SPDX-License-Identifier: Apache-2.0
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/*
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* Copyright (C) 2024-2025 Aleksa Sarai <cyphar@cyphar.com>
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* Copyright (C) 2024-2025 SUSE LLC
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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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*/
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package pathrs
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import (
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"strings"
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)
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// IsLexicallyInRoot is shorthand for strings.HasPrefix(path+"/", root+"/"),
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// but properly handling the case where path or root have a "/" suffix.
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//
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// NOTE: The return value only make sense if the path is already mostly cleaned
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// (i.e., doesn't contain "..", ".", nor unneeded "/"s).
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func IsLexicallyInRoot(root, path string) bool {
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root = strings.TrimRight(root, "/")
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path = strings.TrimRight(path, "/")
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return strings.HasPrefix(path+"/", root+"/")
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}
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