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tailscale/ipn
Anton Tolchanov 151b77f9d6 cmd/tl-longchain: tool to re-sign nodes with long rotation signatures
In Tailnet Lock, there is an implicit limit on the number of rotation
signatures that can be chained before the signature becomes too long.

This program helps tailnet admins to identify nodes that have signatures
with long chains and prints commands to re-sign those node keys with a
fresh direct signature. It's a temporary mitigation measure, and we will
remove this tool as we design and implement a long-term approach for
rotation signatures.

Example output:

```
2024/08/20 18:25:03 Self: does not need re-signing
2024/08/20 18:25:03 Visible peers with valid signatures:
2024/08/20 18:25:03 Peer xxx2.yy.ts.net. (100.77.192.34) nodeid=nyDmhiZiGA11KTM59, current signature kind=direct: does not need re-signing
2024/08/20 18:25:03 Peer xxx3.yy.ts.net. (100.84.248.22) nodeid=ndQ64mDnaB11KTM59, current signature kind=direct: does not need re-signing
2024/08/20 18:25:03 Peer xxx4.yy.ts.net. (100.85.253.53) nodeid=nmZfVygzkB21KTM59, current signature kind=rotation: chain length 4, printing command to re-sign
tailscale lock sign nodekey:530bddbfbe69e91fe15758a1d6ead5337aa6307e55ac92dafad3794f8b3fc661 tlpub:4bf07597336703395f2149dce88e7c50dd8694ab5bbde3d7c2a1c7b3e231a3c2
```

To support this, the NetworkLockStatus localapi response now includes
information about signatures of all peers rather than just the invalid
ones. This is not displayed by default in `tailscale lock status`, but
will be surfaced in `tailscale lock status --json`.

Updates #13185

Signed-off-by: Anton Tolchanov <anton@tailscale.com>
3 months ago
..
conffile cmd/tailscaled, ipn/conffile: support ec2 user-data config file 6 months ago
ipnauth go.mod, all: move away from inet.af domain seized by Taliban 9 months ago
ipnlocal cmd/tl-longchain: tool to re-sign nodes with long rotation signatures 3 months ago
ipnserver all: add test for package comments, fix, add comments as needed 4 months ago
ipnstate cmd/tl-longchain: tool to re-sign nodes with long rotation signatures 3 months ago
localapi ipn/localapi: only flush relevant data in multiFilePostResponseWriter.Flush() 3 months ago
policy ipn,tailconfig: clean up unreleased and removed app connector service 1 year ago
store all: add test for package comments, fix, add comments as needed 4 months ago
backend.go health: begin work to use structured health warnings instead of strings, pipe changes into ipn.Notify (#12406) 5 months ago
conf.go ipn,wgengine/magicsock: allow setting static node endpoints via tailscaled configfile (#12882) 4 months ago
doc.go all: update copyright and license headers 2 years ago
ipn_clone.go cmd/cloner, cmd/viewer, util/codegen: add support for generic types and interfaces 4 months ago
ipn_test.go all: do not depend on the testing package 6 months ago
ipn_view.go ipn,wgengine: remove vestigial Prefs.AllowSingleHosts 6 months ago
prefs.go ipn: allow FQDN in exit node selection 4 months ago
prefs_test.go ipn: allow FQDN in exit node selection 4 months ago
serve.go cmd/serve: don't convert localhost to 127.0.0.1 5 months ago
serve_test.go cmd/serve: don't convert localhost to 127.0.0.1 5 months ago
store.go ipn: add comment about thread-safety to StateStore 9 months ago
store_test.go ipn: avoid useless no-op WriteState calls 1 year ago