76 lines
1.7 KiB
Go
76 lines
1.7 KiB
Go
/*
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Copyright 2014 CoreOS, Inc.
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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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http://www.apache.org/licenses/LICENSE-2.0
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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 system
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import (
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"fmt"
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"io"
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"io/ioutil"
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"os/exec"
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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 i, key := range keys {
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keys[i] = 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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cmd := exec.Command("update-ssh-keys", "-u", user, "-a", keysName)
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stdin, err := cmd.StdinPipe()
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if err != nil {
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return err
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}
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stdout, err := cmd.StdoutPipe()
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if err != nil {
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return err
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}
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stderr, err := cmd.StderrPipe()
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if err != nil {
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return err
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}
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err = cmd.Start()
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if err != nil {
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stdin.Close()
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return err
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}
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_, err = io.WriteString(stdin, joined)
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if err != nil {
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return err
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}
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stdin.Close()
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stdoutBytes, _ := ioutil.ReadAll(stdout)
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stderrBytes, _ := ioutil.ReadAll(stderr)
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err = cmd.Wait()
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if err != nil {
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return fmt.Errorf("Call to update-ssh-keys failed with %v: %s %s", err, string(stdoutBytes), string(stderrBytes))
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}
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return nil
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}
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