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307 Commits
Author SHA1 Message Date
Kristoffer Dalby 5dff6ca432 policy/v2: resolve user references consistently across updates 
Prefer email owners over usernames and validate grants and nodeAttrs on
write. Reject ambiguous writes; log and match nobody on reload. Bare @
matches nobody.
 2026-11-02 19:15:40 +01:00
Kristoffer Dalby cb47fdff36 policy/v2, mapper: align NextDNS warnings and device metadata 
Warn about malformed attributes once at policy load, not on each map.
Include the node's stable ID as device_id in resolver queries.
 2026-11-02 19:15:40 +01:00
Kristoffer Dalby 256a67e86b policy: offer exit routes only to viewers whose rules reach the internet 
Every destination overlaps /0, so any rule offered a peer's exit routes.
They now need a rule to the internet, the test exit-node visibility
uses; via steering defers them to a regular grant only on that test.
 2026-11-02 19:15:40 +01:00
Kristoffer Dalby 1cd93ec432 policy: reduce merged destination prefixes to the node's own addresses 
Adjacent node addresses merge into one prefix, and each node's filter
kept all of it. A prefix made only of node addresses now shrinks to the
node's own; a prefix the policy wrote, or one the node routes, stays.
 2026-11-02 19:15:40 +01:00
Kristoffer Dalby 6dd0656f17 api, policy/v2: refuse route prefixes with host bits 
Routes are matched as written, so such a prefix never equals the one a
client announces. The approval APIs answer 400 and autoApprovers refuses
it at load and write, with Tailscale's text.
 2026-11-02 19:15:40 +01:00
Kristoffer Dalby 05039d3398 policy, state: log only the routes auto-approval adds 2026-11-02 19:15:40 +01:00
Kristoffer Dalby 836d03dee2 policy/matcher: compare cached policy and node route ranges 
Binary-search immutable policy ranges and normalize node routes once.
Large misses and self/via scans improve; small or early matches can slow,
and global policies pay extra normalization and allocation costs.
 2026-11-02 19:15:40 +01:00
Kristoffer Dalby 452e14d461 policy: look up approved routes in a set when auto-approving 
Avoid scanning the growing approval list for every announcement.
Use the sorted current routes when identifying additions.
 2026-11-02 19:15:40 +01:00
Kristoffer Dalby 71dc0c1c58 types, state: derive and reduce approved routes once 
Derive subnet and exit routes together, once each in announcement order.
Reuse matcher membership while preserving HA co-router visibility.
 2026-11-02 19:15:40 +01:00
Kristoffer Dalby 0e7515eab9 state, policy/v2: classify only effective route changes 
Compare announced-and-approved routes only when immutable route inputs
change. Publish Hostinfo without unnecessary peer adjacency rebuilds.
 2026-11-02 19:15:40 +01:00
Kristoffer Dalby 4342883bd4 policy/v2, state: elect primaries by oldest control session 
A router that reconnects joins as a standby; one that kept its session
takes its routes back once available again, as on Tailscale. Both the
global and the via election use it, in place of anti-flap stickiness.
 2026-11-02 19:15:40 +01:00
Kristoffer Dalby e0717bc116 state, policy/v2: elect available routers and retain unavailable routes 
Recompute via elections on health changes and check online state and expiry.
With no available router, retain the previous primary or lowest-ID approver;
exclude routers the prober marked unreachable.
 2026-11-02 19:15:40 +01:00
Kristoffer Dalby d4ce109806 policy/v2: refuse check SSH rules with tag sources 
A check asks the source's user to log in again, and a tagged node has
none. Tailscale SaaS refuses the rule; headscale accepted it.
 2026-11-02 19:15:40 +01:00
Kristoffer Dalby 79daa3142f policy/v2: bound grant destination expansion 
Require one port or range per grant IP entry. Reject more than 100,000
declared destination/port-range combinations on every parse.
 2026-11-02 19:15:40 +01:00
Kristoffer Dalby 1c833ba394 policy/v2: evaluate policy tests from compiled snapshots 
Parse filters once and index SSH rules by source. Evaluate tests against
user and node snapshots before taking the write lock.
 2026-11-02 19:15:40 +01:00
Kristoffer Dalby 33b57fdeb2 policy/v2: need every dst node for a tests accept, no range sources 
An accept passes only when each node behind the dst is reached, as on
Tailscale SaaS; a deny keeps its rule. A CIDR, "*" or autogroup:tagged
src names no user or host, so its test fails.
 2026-11-02 19:15:40 +01:00
Kristoffer Dalby 0cdd52068b policy/v2: bound failure reports and name SSH test aliases 
Keep source/destination labels and repeated destination occurrences.
Limit reports to 100 lines and labels to 256 bytes.
 2026-11-02 19:15:40 +01:00
Kristoffer Dalby cebe5fc903 policy/v2: validate SSH test sources and destinations like SaaS 
Reject address-range sources and autogroup:member destinations.
 2026-11-02 19:15:40 +01:00
Kristoffer Dalby e6d04cd79a policy/v2: map login 0 to no local user in SSH rules 
Every rule that maps root now carries "0": "", as Tailscale SaaS writes
it, also when the policy lists "0".
 2026-11-02 19:15:40 +01:00
Kristoffer Dalby 0bfae13d6d policy/v2: normalize emitted ACL and via destinations 
Write single-address via destinations bare. Deduplicate repeated ACL
destination/port pairs while preserving grant duplicates.
 2026-11-02 19:15:40 +01:00
Kristoffer Dalby f2df44295a state, db: validate and store the current policy before installing it 
Reject empty input. Validate without changing live state, then store and
install under one lock; prune old rows only with a successful write.
 2026-11-02 19:15:40 +01:00
Kristoffer Dalby 4c8330c936 policy/v2: resolve tag owners one hop deep 
A user claims only the tags it owns directly, and a tag owns only the
tags that list it, as on Tailscale SaaS. With no walk left, validate
names an undefined owner once, with the tag that lists it.
 2026-11-02 19:15:40 +01:00
Kristoffer Dalby 6fd3dbd0a2 policy/v2: evaluate sshTests sources through the nodes they cover 
A src was expanded to every address it names, so "*" or ::/0 never
finished. Principals are node addresses: keep those plus one stand-in.
 2026-11-02 19:15:40 +01:00
Kristoffer Dalby 2c7a9a22f6 policy/v2: reuse compiled policy data across rules and nodes 
Cache shared source keys, compile SSH rules and principals once, and
resolve groups once on a policy copy.
 2026-11-02 19:15:40 +01:00
Kristoffer Dalby 361b5e6556 policy/v2: keep via steering bounded across route and user changes 
Refresh clients when the last via grant disappears. Match each ACL once,
deduplicate routes, and elect once per route the peer actually serves.
 2026-11-02 19:15:40 +01:00
Kristoffer Dalby 5b578fe95f policy/v2: recapture SSH data captures 
Every ssh_results row captured again from SaaS. SaaS now maps login "0"
to no local user in rules that map root, quotes a refused checkPeriod as
written and rewords its tailnet-domain refusal.
 2026-11-02 16:09:00 +01:00
Kristoffer Dalby a34eb4f535 policy/v2, servertest: add policy generation golden data 
One policy over joins, a via router swap, an admin tag, a delete and a
group edit; filter, SSH, peers and routes per step, and the manager
against a fresh one.
 2026-11-02 16:09:00 +01:00
Kristoffer Dalby a21d725853 servertest, policy/v2: replay tag owner chain joins through registration 
A key login never asks the policy about requested tags, so the joins are
checked where headscale decides them. OAuth mints stay at
TagOwnedByTags.
 2026-11-02 16:09:00 +01:00
Kristoffer Dalby 2747f111b9 policy/v2: name the destination in sshTests failure breakdowns 
A failure reported against the wrong dst alias no longer passes.
 2026-11-02 16:09:00 +01:00
Kristoffer Dalby 765f4d8cf2 policy/v2: check the SSH login 0 mapping apart from the rules 
Its skip entries no longer hide rule count, order or principals.
 2026-11-02 16:09:00 +01:00
Kristoffer Dalby 63130fb8e5 policy/v2: add grant port list refusal capture 
Grant and ACL refusals share one check-keyed refused/message check.
 2026-11-02 16:09:00 +01:00
Kristoffer Dalby aa4721b3be policy/v2, servertest: add via port captures 
A port-limited ACL entry beside a via grant, and a via tag with no
advertiser. Via HA replays now compare router filters by address.
 2026-11-02 16:09:00 +01:00
Kristoffer Dalby 1449dc8c4f policy/v2, servertest: add multi-route router captures 
A seven-route router and an exit node under six policies; replayed
through policy, peer map and map stream. Peer map now checked against
SaaS peers.
 2026-11-02 16:09:00 +01:00
Kristoffer Dalby 80472006c4 policy/v2, mapper: add nextdns attr captures 
SaaS accepts malformed nextdns profiles and keeps them in the CapMap;
its resolver skips them. DoH addresses compare per node: path, query,
ID.
 2026-11-02 16:09:00 +01:00
Kristoffer Dalby 7b86005350 policy/v2: add user token captures 
SaaS answers for unknown users, a short name and a bare "@" at every
site. Each capture also runs under headscale-only user rows, at boot and
runtime; SaaS nodes must not change and overlay nodes get nothing.
 2026-11-02 16:09:00 +01:00
Kristoffer Dalby 3342e60fd4 policy/v2, servertest: add via source loss captures 
Repeated via destinations, a user via source, and an empty one.
A rename that empties the via source must reach open streams as v67.
 2026-11-02 16:09:00 +01:00
Kristoffer Dalby 389f0e137d policy/v2, servertest: add validation matrix and grant shape captures 
SaaS answers for sshTests sources, tests semantics, failure reports,
duplicate destinations, empty and allow-all policies, and refusals.
ACL and SSH compat checks are keyed per check; differences listed.
 2026-11-02 16:09:00 +01:00
Kristoffer Dalby c69c47409a policy/v2: recapture tester rows with failure detail 
Re-runs keep SaaS's error data and validate answer. Tester compat checks
verdict, message, failure breakdown and node labels.
 2026-11-02 16:09:00 +01:00
Kristoffer Dalby 1915feafd5 servertest: check refused policies leave the live policy unchanged 
Posts every policy SaaS refused through v2; filter, SSH, body and ETag
must stay as before. Policies headscale accepts are skip entries.
 2026-11-02 16:09:00 +01:00
Kristoffer Dalby b2b2bb0e38 policy/v2: build tester nodes from the capture topology 
The fixed node list had other addresses than the captures, so address
and range tests ran against nodes SaaS never saw.
 2026-11-02 16:09:00 +01:00
Kristoffer Dalby 79001007ea policy/v2: compare compat captures through the policy manager 
ACL, grant and SSH captures now also check FilterForNode and SSHPolicy,
which add the global merge and caches the per-node compile skips.
 2026-11-02 16:09:00 +01:00
Kristoffer Dalby 526daf0841 policy/v2: resolve an ACL's sources once, not once per destination 
An ACL compiles to one grant per destination, and each resolved and
merged the same sources again. A wide CI-style ACL took 3s and 674MB
per compile; 88ms and 23MB now.
 2026-10-30 14:36:19 +01:00
Kristoffer Dalby 52842f4c0d integration: guard SSH acceptEnv forwarding 
Updates #3559
 2026-10-29 20:51:36 +01:00
Kristoffer Dalby c4d4e32f12 servertest, policy/v2: add re-authentication golden data 
Expired, live, ephemeral and admin-tagged devices logging in again with
spent, revoked, valid and other users' keys, by key and by login;
tag ownership through tags per policy function.

Updates ANT-2026-LYVGXVSW
Updates ANT-2026-AWGRB7O1
 2026-10-29 14:00:02 +01:00
Kristoffer Dalby 286d6ea05d policy/v2, servertest, hscontrol: add tailnet overlap route captures 
Routers announcing tailnet addresses, approved by policy, admin key and
devices:routes token; replayed through policy, map stream and v1/v2
APIs.

Updates ANT-2026-MLP8ZR5T
 2026-10-29 14:00:02 +01:00
Kristoffer Dalby 998c4b0619 policy: pin SSH forwarding behavior and recommend upgrades 2026-10-29 12:43:14 +01:00
Kristoffer Dalby a336e1e7e6 policy/v2: keep failing tests apart per entry 
A refusal can then name each failing test's src.
 2026-10-29 11:04:05 +01:00
Kristoffer Dalby dd6e288aa1 policy/v2: index nodes by tag once per compile 
Each tag alias scanned every node, so with many tags a compile, run on
every NodeStore batch, was mostly HasTag.
 2026-10-23 18:23:53 +02:00
Kristoffer Dalby 4933bb83d2 policyutil: match DstPorts as ranges when reducing filters 
Every node re-parsed every entry into an IPSet on every policy change;
under churn that was most of the batcher's CPU.
 2026-10-23 18:23:53 +02:00
Kristoffer Dalby 7414c276f6 mapper: limit capability copies to requested peers 
Small peer updates should not copy capabilities for the entire tailnet.
 2026-10-22 22:17:36 +02:00