oppi.li
1// Copyright 2022 The Gitea Authors. All rights reserved.
2// SPDX-License-Identifier: MIT
3
4package ssh
5
6import (
7 "fmt"
8 "net"
9 "os"
10 "path/filepath"
11 "strconv"
12 "strings"
13
14 "forgejo.org/modules/log"
15 "forgejo.org/modules/setting"
16)
17
18func Init() error {
19 if setting.SSH.Disabled {
20 builtinUnused()
21 return nil
22 }
23
24 if setting.SSH.StartBuiltinServer {
25 Listen(setting.SSH.ListenHost, setting.SSH.ListenPort, setting.SSH.ServerCiphers, setting.SSH.ServerKeyExchanges, setting.SSH.ServerMACs)
26 log.Info("SSH server started on %s. Cipher list (%v), key exchange algorithms (%v), MACs (%v)",
27 net.JoinHostPort(setting.SSH.ListenHost, strconv.Itoa(setting.SSH.ListenPort)),
28 setting.SSH.ServerCiphers, setting.SSH.ServerKeyExchanges, setting.SSH.ServerMACs,
29 )
30 return nil
31 }
32
33 builtinUnused()
34
35 // FIXME: why 0o644 for a directory .....
36 if err := os.MkdirAll(setting.SSH.KeyTestPath, 0o644); err != nil {
37 return fmt.Errorf("failed to create directory %q for ssh key test: %w", setting.SSH.KeyTestPath, err)
38 }
39
40 if len(setting.SSH.TrustedUserCAKeys) > 0 && setting.SSH.AuthorizedPrincipalsEnabled {
41 caKeysFileName := setting.SSH.TrustedUserCAKeysFile
42 caKeysFileDir := filepath.Dir(caKeysFileName)
43
44 err := os.MkdirAll(caKeysFileDir, 0o700) // SSH.RootPath by default (That is `~/.ssh` in most cases)
45 if err != nil {
46 return fmt.Errorf("failed to create directory %q for ssh trusted ca keys: %w", caKeysFileDir, err)
47 }
48
49 if err := os.WriteFile(caKeysFileName, []byte(strings.Join(setting.SSH.TrustedUserCAKeys, "\n")), 0o600); err != nil {
50 return fmt.Errorf("failed to write ssh trusted ca keys to %q: %w", caKeysFileName, err)
51 }
52 }
53
54 return nil
55}