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cmd/tailscale/cli: support passing network lock keys via files

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Fixes tailscale/corp#22356

Change-Id: I959efae716a22bcf582c20d261fb1b57bacf6dd9
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This commit is contained in:
Brad Fitzpatrick 2024-08-14 08:34:53 -07:00 committed by Brad Fitzpatrick
parent 2506bf5b06
commit 4c2e978f1e
6 changed files with 32 additions and 8 deletions
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2
cmd/k8s-operator/depaware.txt
View File

@ -747,7 +747,7 @@ tailscale.com/cmd/k8s-operator dependencies: (generated by github.com/tailscale/
tailscale.com/taildrop from tailscale.com/ipn/ipnlocal+
tailscale.com/tempfork/heap from tailscale.com/wgengine/magicsock
tailscale.com/tka from tailscale.com/client/tailscale+
W tailscale.com/tsconst from tailscale.com/net/netmon+
tailscale.com/tsconst from tailscale.com/net/netmon+
tailscale.com/tsd from tailscale.com/ipn/ipnlocal+
tailscale.com/tsnet from tailscale.com/cmd/k8s-operator+
tailscale.com/tstime from tailscale.com/cmd/k8s-operator+

27
cmd/tailscale/cli/network-lock.go
View File

@ -20,6 +20,7 @@
"github.com/peterbourgon/ff/v3/ffcli"
"tailscale.com/ipn/ipnstate"
"tailscale.com/tka"
"tailscale.com/tsconst"
"tailscale.com/types/key"
"tailscale.com/types/tkatype"
)
@ -443,15 +444,33 @@ func runNetworkLockModify(ctx context.Context, addArgs, removeArgs []string) err
var nlSignCmd = &ffcli.Command{
Name: "sign",
ShortUsage: "tailscale lock sign <node-key> [<rotation-key>] or sign <auth-key>",
ShortUsage: "tailscale lock sign <node-key> [<rotation-key>]\ntailscale lock sign <auth-key>",
ShortHelp: "Signs a node or pre-approved auth key",
LongHelp: `Either:
- signs a node key and transmits the signature to the coordination server, or
- signs a pre-approved auth key, printing it in a form that can be used to bring up nodes under tailnet lock`,
- signs a node key and transmits the signature to the coordination
server, or
- signs a pre-approved auth key, printing it in a form that can be
used to bring up nodes under tailnet lock
If any of the key arguments begin with "file:", the key is retrieved from
the file at the path specified in the argument suffix.`,
Exec: runNetworkLockSign,
}
func runNetworkLockSign(ctx context.Context, args []string) error {
// If any of the arguments start with "file:", replace that argument
// with the contents of the file. We do this early, before the check
// to see if the first argument is an auth key.
for i, arg := range args {
if filename, ok := strings.CutPrefix(arg, "file:"); ok {
b, err := os.ReadFile(filename)
if err != nil {
return err
}
args[i] = strings.TrimSpace(string(b))
}
}
if len(args) > 0 && strings.HasPrefix(args[0], "tskey-auth-") {
return runTskeyWrapCmd(ctx, args)
}
@ -476,7 +495,7 @@ func runNetworkLockSign(ctx context.Context, args []string) error {
err := localClient.NetworkLockSign(ctx, nodeKey, []byte(rotationKey.Verifier()))
// Provide a better help message for when someone clicks through the signing flow
// on the wrong device.
if err != nil && strings.Contains(err.Error(), "this node is not trusted by network lock") {
if err != nil && strings.Contains(err.Error(), tsconst.TailnetLockNotTrustedMsg) {
fmt.Fprintln(Stderr, "Error: Signing is not available on this device because it does not have a trusted tailnet lock key.")
fmt.Fprintln(Stderr)
fmt.Fprintln(Stderr, "Try again on a signing device instead. Tailnet admins can see signing devices on the admin panel.")

2
cmd/tailscale/depaware.txt
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@ -128,7 +128,7 @@ tailscale.com/cmd/tailscale dependencies: (generated by github.com/tailscale/dep
tailscale.com/tailcfg from tailscale.com/client/tailscale+
tailscale.com/tempfork/spf13/cobra from tailscale.com/cmd/tailscale/cli/ffcomplete+
tailscale.com/tka from tailscale.com/client/tailscale+
W tailscale.com/tsconst from tailscale.com/net/netmon+
tailscale.com/tsconst from tailscale.com/net/netmon+
tailscale.com/tstime from tailscale.com/control/controlhttp+
tailscale.com/tstime/mono from tailscale.com/tstime/rate
tailscale.com/tstime/rate from tailscale.com/cmd/tailscale/cli+

2
cmd/tailscaled/depaware.txt
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@ -338,7 +338,7 @@ tailscale.com/cmd/tailscaled dependencies: (generated by github.com/tailscale/de
LD tailscale.com/tempfork/gliderlabs/ssh from tailscale.com/ssh/tailssh
tailscale.com/tempfork/heap from tailscale.com/wgengine/magicsock
tailscale.com/tka from tailscale.com/client/tailscale+
W tailscale.com/tsconst from tailscale.com/net/netmon+
tailscale.com/tsconst from tailscale.com/net/netmon+
tailscale.com/tsd from tailscale.com/cmd/tailscaled+
tailscale.com/tstime from tailscale.com/control/controlclient+
tailscale.com/tstime/mono from tailscale.com/net/tstun+

3
ipn/ipnlocal/network-lock.go
View File

@ -27,6 +27,7 @@
"tailscale.com/net/tsaddr"
"tailscale.com/tailcfg"
"tailscale.com/tka"
"tailscale.com/tsconst"
"tailscale.com/types/key"
"tailscale.com/types/logger"
"tailscale.com/types/netmap"
@ -716,7 +717,7 @@ func (b *LocalBackend) NetworkLockSign(nodeKey key.NodePublic, rotationPublic []
return key.NodePublic{}, tka.NodeKeySignature{}, errNetworkLockNotActive
}
if !b.tka.authority.KeyTrusted(nlPriv.KeyID()) {
return key.NodePublic{}, tka.NodeKeySignature{}, errors.New("this node is not trusted by network lock")
return key.NodePublic{}, tka.NodeKeySignature{}, errors.New(tsconst.TailnetLockNotTrustedMsg)
}
p, err := nodeKey.MarshalBinary()

4
tsconst/interface.go
View File

@ -9,3 +9,7 @@
// interfaces on Windows. This is set by the WinTun driver.
const WintunInterfaceDesc = "Tailscale Tunnel"
const WintunInterfaceDesc0_14 = "Wintun Userspace Tunnel"
// TailnetLockNotTrustedMsg is the error message used by network lock
// and sniffed (via substring) out of an error sent over the network.
const TailnetLockNotTrustedMsg = "this node is not trusted by network lock"