A nil tags slice marshals to JSON `null`; the clear-tagged migration
read that as tagged and cleared user_id. Exclude it, and recover
already-detached nodes from their pre-auth key.
Fixes#3323
Versions before 0.28 persisted a pointer to a zero time.Time as
'0001-01-01 00:00:00+00:00' in nodes.expiry rather than NULL. 0.29
reports those rows as expired. #3197 and #3199 stopped new writes;
this normalises the existing rows so the column once again means
"no expiry" when unset.
Fixes: #3284
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Refactor the RequestTags migration (202601121700-migrate-hostinfo-request-tags)
to use PolicyManager.NodeCanHaveTag() instead of reimplementing tag validation.
Changes:
- NewHeadscaleDatabase now accepts *types.Config to allow migrations
access to policy configuration
- Add loadPolicyBytes helper to load policy from file or DB based on config
- Add standalone GetPolicy(tx *gorm.DB) for use during migrations
- Replace custom tag validation logic with PolicyManager
Benefits:
- Full HuJSON parsing support (not just JSON)
- Proper group expansion via PolicyManager
- Support for nested tags and autogroups
- Works with both file and database policy modes
- Single source of truth for tag validation
Co-Authored-By: Shourya Gautam <shouryamgautam@gmail.com>
Previously we tested migrations on schemas and dumps
of old databases.
The problems with testing migrations against the schemas
is that the migration table is empty, so we try to run
migrations that are already ran on that schema, which might
blow up.
This commit removes the schema approach and just leaves all
the dumps, which include the migration table.
Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
