cloudinit/system/ssh_key.go
Vasiliy Tolstov 993af2705a up
Signed-off-by: Vasiliy Tolstov <v.tolstov@selfip.ru>
2015-03-26 10:23:27 +03:00

53 lines
1.4 KiB
Go

/*
Copyright 2014 CoreOS, Inc.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package system
import (
"fmt"
"os"
"strings"
)
// Add the provide SSH public key to the core user's list of
// authorized keys
func AuthorizeSSHKeys(user string, keysName string, keys []string) error {
for name, key := range keys {
keys[name] = strings.TrimSpace(key)
}
// join all keys with newlines, ensuring the resulting string
// also ends with a newline
joined := fmt.Sprintf("%s\n", strings.Join(keys, "\n"))
authorized_file := ""
switch user {
case "root":
authorized_file = "/root/.ssh/authorized_keys"
default:
authorized_file = fmt.Sprintf("/home/%s/.ssh/authorized_keys", user)
}
f, err := os.OpenFile(authorized_file, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0644)
if err != nil {
return err
}
defer f.Close()
_, err = f.WriteString(joined)
return err
}