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cmd/tailscale/cli: print node signature in tailscale lock status

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- Add current node signature to `ipnstate.NetworkLockStatus`;
- Print current node signature in a human-friendly format as part
  of `tailscale lock status`.

Examples:

```
$ tailscale lock status
Tailnet lock is ENABLED.

This node is accessible under tailnet lock. Node signature:
SigKind: direct
Pubkey: [OTB3a]
KeyID: tlpub:44a0e23cd53a4b8acc02f6732813d8f5ba8b35d02d48bf94c9f1724ebe31c943
WrappingPubkey: tlpub:44a0e23cd53a4b8acc02f6732813d8f5ba8b35d02d48bf94c9f1724ebe31c943

This node's tailnet-lock key: tlpub:44a0e23cd53a4b8acc02f6732813d8f5ba8b35d02d48bf94c9f1724ebe31c943

Trusted signing keys:
	tlpub:44a0e23cd53a4b8acc02f6732813d8f5ba8b35d02d48bf94c9f1724ebe31c943	1	(self)
	tlpub:6fa21d242a202b290de85926ba3893a6861888679a73bc3a43f49539d67c9764	1	(pre-auth key kq3NzejWoS11KTM59)
```

For a node created via a signed auth key:

```
This node is accessible under tailnet lock. Node signature:
SigKind: rotation
Pubkey: [e3nAO]
Nested:
  SigKind: credential
  KeyID: tlpub:6fa21d242a202b290de85926ba3893a6861888679a73bc3a43f49539d67c9764
  WrappingPubkey: tlpub:3623b0412cab0029cb1918806435709b5947ae03554050f20caf66629f21220a
```

For a node that rotated its key a few times:

```
This node is accessible under tailnet lock. Node signature:
SigKind: rotation
Pubkey: [DOzL4]
Nested:
  SigKind: rotation
  Pubkey: [S/9yU]
  Nested:
    SigKind: rotation
    Pubkey: [9E9v4]
    Nested:
      SigKind: direct
      Pubkey: [3QHTJ]
      KeyID: tlpub:44a0e23cd53a4b8acc02f6732813d8f5ba8b35d02d48bf94c9f1724ebe31c943
      WrappingPubkey: tlpub:2faa280025d3aba0884615f710d8c50590b052c01a004c2b4c2c9434702ae9d0
```

Updates tailscale/corp#19764

Signed-off-by: Anton Tolchanov <anton@tailscale.com>
This commit is contained in:
Anton Tolchanov
2024-05-28 16:56:05 +01:00
committed by Anton Tolchanov
parent 776a05223b
commit 32120932a5
4 changed files with 55 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
cmd/tailscale/cli/network-lock.go
View File

@@ -222,7 +222,8 @@ func runNetworkLockStatus(ctx context.Context, args []string) error {
if st.Enabled && st.NodeKey != nil && !st.PublicKey.IsZero() {
if st.NodeKeySigned {
fmt.Println("This node is accessible under tailnet lock.")
fmt.Println("This node is accessible under tailnet lock. Node signature:")
fmt.Println(st.NodeKeySignature.String())
} else {
fmt.Println("This node is LOCKED OUT by tailnet-lock, and action is required to establish connectivity.")
fmt.Printf("Run the following command on a node with a trusted key:\n\ttailscale lock sign %v %s\n", st.NodeKey, st.PublicKey.CLIString())