30 lines
651 B
Go
30 lines
651 B
Go
// Copyright (c) Tailscale Inc & AUTHORS
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// SPDX-License-Identifier: BSD-3-Clause
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// Package groupmember verifies group membership of the provided user on the
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// local system.
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package groupmember
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import (
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"os/user"
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"slices"
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)
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// IsMemberOfGroup reports whether the provided user is a member of
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// the provided system group.
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func IsMemberOfGroup(group, userName string) (bool, error) {
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u, err := user.Lookup(userName)
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if err != nil {
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return false, err
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}
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g, err := user.LookupGroup(group)
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if err != nil {
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return false, err
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}
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ugids, err := u.GroupIds()
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if err != nil {
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return false, err
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}
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return slices.Contains(ugids, g.Gid), nil
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}
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