49 lines
1.3 KiB
Go
49 lines
1.3 KiB
Go
// Copyright 2015 CoreOS, 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 system
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import (
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"fmt"
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"os"
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"strings"
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)
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// Add the provide SSH public key to the core user's list of
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// authorized keys
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func AuthorizeSSHKeys(user string, keysName string, keys []string) error {
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for name, key := range keys {
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keys[name] = strings.TrimSpace(key)
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}
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// join all keys with newlines, ensuring the resulting string
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// also ends with a newline
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joined := fmt.Sprintf("%s\n", strings.Join(keys, "\n"))
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home, err := UserHome(user)
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if err != nil {
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return err
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}
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authorized_file := fmt.Sprintf("%s/.ssh/authorized_keys", home)
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f, err := os.OpenFile(authorized_file, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0644)
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if err != nil {
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return err
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}
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defer f.Close()
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_, err = f.WriteString(joined)
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return err
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}
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