Add support for localpart:*@<domain> entries in SSH policy users.
When a user SSHes into a target, their email local-part becomes the
OS username (e.g. alice@example.com → OS user alice).
Type system (types.go):
- SSHUser.IsLocalpart() and ParseLocalpart() for validation
- SSHUsers.LocalpartEntries(), NormalUsers(), ContainsLocalpart()
- Enforces format: localpart:*@<domain> (wildcard-only)
- UserWildcard.Resolve for user:*@domain SSH source aliases
- acceptEnv passthrough for SSH rules
Compilation (filter.go):
- resolveLocalparts: pure function mapping users to local-parts
by email domain. No node walking, easy to test.
- groupSourcesByUser: single walk producing per-user principals
with sorted user IDs, and tagged principals separately.
- ipSetToPrincipals: shared helper replacing 6 inline copies.
- selfPrincipalsForNode: self-access using pre-computed byUser.
The approach separates data gathering from rule assembly. Localpart
rules are interleaved per source user to match Tailscale SaaS
first-match-wins ordering.
Updates #3049
Implement the SSH "check" action which requires additional
verification before allowing SSH access. The policy compiler generates
a HoldAndDelegate URL that the Tailscale client calls back to
headscale. The SSHActionHandler creates an auth session and waits for
approval via the generalised auth flow.
Sort check (HoldAndDelegate) rules before accept rules to match
Tailscale's first-match-wins evaluation order.
Updates #1850
This commit upgrades the codebase from Go 1.25.5 to Go 1.26rc2 and
adopts new language features.
Toolchain updates:
- go.mod: go 1.25.5 → go 1.26rc2
- flake.nix: buildGo125Module → buildGo126Module, go_1_25 → go_1_26
- flake.nix: build golangci-lint from source with Go 1.26
- Dockerfile.integration: golang:1.25-trixie → golang:1.26rc2-trixie
- Dockerfile.tailscale-HEAD: golang:1.25-alpine → golang:1.26rc2-alpine
- Dockerfile.derper: golang:alpine → golang:1.26rc2-alpine
- .goreleaser.yml: go mod tidy -compat=1.25 → -compat=1.26
- cmd/hi/run.go: fallback Go version 1.25 → 1.26rc2
- .pre-commit-config.yaml: simplify golangci-lint hook entry
Code modernization using Go 1.26 features:
- Replace tsaddr.SortPrefixes with slices.SortFunc + netip.Prefix.Compare
- Replace ptr.To(x) with new(x) syntax
- Replace errors.As with errors.AsType[T]
Lint rule updates:
- Add forbidigo rules to prevent regression to old patterns
According to Tailscale SaaS behavior, autogroup:internet is handled
by exit node routing via AllowedIPs, not by packet filtering. ACL
rules with autogroup:internet as destination should produce no
filter rules for any node.
Previously, Headscale expanded autogroup:internet to public CIDR
ranges and distributed filters to exit nodes (because 0.0.0.0/0
"covers" internet destinations). This was incorrect.
Add detection for AutoGroupInternet in filter compilation to skip
filter generation for this autogroup. Update test expectations
accordingly.
Update test expectations across policy tests to expect merged
FilterRule entries instead of separate ones. Tests now expect:
- Single FilterRule with combined DstPorts for same source
- Reduced matcher counts for exit node tests
Updates #3036
Update unit tests to use valid SSH patterns that conform to Tailscale's
security model:
- Change group->user destinations to group->tag
- Change tag->user destinations to tag->tag
- Update expected error messages for new validation format
- Add proper tagged/untagged node setup in filter tests
Updates #3009
Updates #3010
This PR changes tags to be something that exists on nodes in addition to users, to being its own thing. It is part of moving our tags support towards the correct tailscale compatible implementation.
There are probably rough edges in this PR, but the intention is to get it in, and then start fixing bugs from 0.28.0 milestone (long standing tags issue) to discover what works and what doesnt.
Updates #2417Closes#2619
This commit changes most of our (*)types.Node to
types.NodeView, which is a readonly version of the
underlying node ensuring that there is no mutations
happening in the read path.
Based on the migration, there didnt seem to be any, but the
idea here is to prevent it in the future and simplify other
new implementations.
Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
* policy/v2: allow Username as ssh source
Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
* policy/v2: validate that no undefined group or tag is used
Fixes#2570
Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
* policy: fixup tests which violated tag constraing
Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
---------
Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
* Make matchers part of the Policy interface
* Prevent race condition between rules and matchers
* Test also matchers in tests for Policy.Filter
* Compute `filterChanged` in v2 policy correctly
* Fix nil vs. empty list issue in v2 policy test
* policy/v2: always clear ssh map
Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
---------
Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
Co-authored-by: Aras Ergus <aras.ergus@tngtech.com>
Co-authored-by: Kristoffer Dalby <kristoffer@tailscale.com>
* utility iterator for ipset
Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
* split policy -> policy and v1
This commit split out the common policy logic and policy implementation
into separate packages.
policy contains functions that are independent of the policy implementation,
this typically means logic that works on tailcfg types and generic formats.
In addition, it defines the PolicyManager interface which the v1 implements.
v1 is a subpackage which implements the PolicyManager using the "original"
policy implementation.
Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
* use polivyv1 definitions in integration tests
These can be marshalled back into JSON, which the
new format might not be able to.
Also, just dont change it all to JSON strings for now.
Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
* formatter: breaks lines
Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
* remove compareprefix, use tsaddr version
Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
* remove getacl test, add back autoapprover
Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
* use policy manager tag handling
Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
* rename display helper for user
Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
* introduce policy v2 package
policy v2 is built from the ground up to be stricter
and follow the same pattern for all types of resolvers.
TODO introduce
aliass
resolver
Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
* wire up policyv2 in integration testing
Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
* split policy v2 tests into seperate workflow to work around github limit
Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
* add policy manager output to /debug
Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
* update changelog
Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
---------
Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
