Commit Graph

10 Commits

Author SHA1 Message Date
Paul Fitzpatrick
bc0d6605a1 (core) close a hole in bundle cleanup for granular access control
Summary:
A client hit a situation where a granular access control "bundle"
was not closed, leaving the document locked until reset.  I don't
yet have a replication.  This diff is a possible mitigation,
trusting various methods less.

Test Plan: existing tests pass

Reviewers: dsagal

Reviewed By: dsagal

Differential Revision: https://phab.getgrist.com/D2775
2021-04-15 18:00:19 -04:00
Paul Fitzpatrick
4ab096d179 (core) granular access control in the presence of schema changes
Summary:
 - Support schema changes in the presence of non-trivial ACL rules.
 - Fix update of `aclFormulaParsed` when updating formulas automatically after schema change.
 - Filter private metadata in broadcasts, not just fetches.  Censorship method is unchanged, just refactored.
 - Allow only owners to change ACL rules.
 - Force reloads if rules are changed.
 - Track rule changes within bundle, for clarity during schema changes - tableId and colId changes create a muddle otherwise.
 - Show or forbid pages dynamically depending on user's access to its sections. Logic unchanged, just no longer requires reload.
 - Fix calculation of pre-existing rows touched by a bundle, in the presence of schema changes.
 - Gray out acl page for non-owners.

Test Plan: added tests

Reviewers: dsagal

Reviewed By: dsagal

Differential Revision: https://phab.getgrist.com/D2734
2021-03-01 13:49:31 -05:00
Dmitry S
9fa5d4c9d6 (core) Fix race condition in bundling actions for undo, when actions are submitted close together.
Summary:
The way linkId was set on actions to tie them together for undo bundling was
incorrect. This diff fixes it by moves the setting of linkIds to Sharing.ts,
which already serializes the processing of actions.

Test Plan: Added a test case for submitting actions together while bundling (which fails without this change).

Reviewers: paulfitz

Reviewed By: paulfitz

Differential Revision: https://phab.getgrist.com/D2716
2021-01-28 02:00:08 -05:00
Dmitry S
de35be6b0a (core) Checks that an ACL formula can be parsed, and prevent saving unparsable ACL rules.
Summary:
- Fix error-handling in bundleActions(), and wait for the full bundle to complete.
  (The omissions here were making it impossibly to react to errors from inside bundleActions())
- Catch problematic rules early enough to undo them, by trying out ruleCollection.update()
  on updated rules before the updates are applied.
- Added checkAclFormula() call to DocComm that checks parsing and compiling
  formula, and reports errors.
- In UI, prevent saving if any aclFormulas are invalid, or while waiting for the to get checked.

- Also fixed some lint errors

Test Plan: Added a test case of error reporting in ACL formulas.

Reviewers: paulfitz

Reviewed By: paulfitz

Differential Revision: https://phab.getgrist.com/D2689
2020-12-15 09:43:37 -05:00
Paul Fitzpatrick
131fbbdb92 (core) check row-level permissions on incoming actions
Summary:
This improves support for access control on document modifications.  It adds:

   * Checking of create/remove/update access for row-level changes.
   * Use of `newRec` variable in formulas.

It is now possible to have distinct clients with read+write access to different rows of the same table.

This is another incremental step.  There are deficiencies in actions that include schema changes, and many other lacunae. But the overall flow is taking shape.

Access control is done at the DocAction level, requiring the sandbox to process the UserActions, and then be reverted if the action proves unlawful.  This could be optimized away in many simple and important cases, but I'm not sure it is possible to avoid in general.

Test Plan: added tests

Reviewers: dsagal

Reviewed By: dsagal

Differential Revision: https://phab.getgrist.com/D2677
2020-12-07 16:59:28 -05:00
Paul Fitzpatrick
3519d0efce (core) attribute Calculate to grist rather than user
Summary:
when a document is opened, and Calculate results in
a change, that change is not attributed to 'grist' rather than
to the user's email.

Some minor tweaks included to freshen some related dev scripts.

Test Plan: added test

Reviewers: dsagal

Reviewed By: dsagal

Differential Revision: https://phab.getgrist.com/D2679
2020-12-07 12:46:17 -05:00
Paul Fitzpatrick
0e2deecc55 (core) implement cleaner row-level access control for outgoing messages
Summary:
This implements row-level access control for outgoing messages, replacing the document reloading placeholder that was there before.

 * Prior to broadcasting messages, GranularAccess is notified of actions+undo.
 * While broadcasting messages to different sessions, if we find we need row level access control information, rows before and after the change are reconstructed.
 * Messages are rewritten if rows that were previously forbidden are now allowed, and vice versa.

The diff is somewhat under-tested and under-optimized. Next step would be to implement row-level access control for incoming actions, which may result in some rejiggering of the code from this diff to avoid duplication of effort under some conditions.

Test Plan: added test

Reviewers: dsagal

Reviewed By: dsagal

Differential Revision: https://phab.getgrist.com/D2670
2020-11-30 16:28:33 -05:00
Dmitry S
e2226c3ab7 (core) Store formula values in DB, and include them into .stored/.undo fields of actions.
Summary:
- Introduce a new SQLiteDB migration, which adds DB columns for formula columns
- Newly added columns have the special ['P'] (pending) value in them
  (in order to show the usual "Loading..." on the first load that triggers the migration)
- Calculated values are added to .stored/.undo fields of user actions.
- Various changes made in the sandbox to include .stored/.undo in the right order.
- OnDemand tables ignore stored formula columns, replacing them with special SQL as before
- In particular, converting to OnDemand table leaves stale values in those
  columns, we should maybe clean those out.

Some tweaks on the side:
- Allow overriding chai assertion truncateThreshold with CHAI_TRUNCATE_THRESHOLD
- Rebuild python automatically in watch mode

Test Plan: Fixed various tests, updated some fixtures. Many python tests that check actions needed adjustments because actions moved from .stored to .undo. Some checks added to catch situations previously only caught in browser tests.

Reviewers: paulfitz

Reviewed By: paulfitz

Differential Revision: https://phab.getgrist.com/D2645
2020-11-04 16:45:47 -05:00
Paul Fitzpatrick
526fda4eba (core) make user role available in ActiveDoc methods
Summary: This makes the user's role (owner/editor/viewer) available in ActiveDoc methods. No use of that information is made yet, other than to log it.  The bulk of the diff is getting a handle on the various ways the methods can be called, and systematizing it a bit more.  In passing, access control is added to broadcasts of document changes, so users who no longer have access to a document do not receive changes if they still have the document open.

Test Plan: existing tests pass; test for broadcast access control added

Reviewers: dsagal

Reviewed By: dsagal

Differential Revision: https://phab.getgrist.com/D2599
2020-09-02 14:46:15 -04:00
Paul Fitzpatrick
5ef889addd (core) move home server into core
Summary: This moves enough server material into core to run a home server.  The data engine is not yet incorporated (though in manual testing it works when ported).

Test Plan: existing tests pass

Reviewers: dsagal

Reviewed By: dsagal

Differential Revision: https://phab.getgrist.com/D2552
2020-07-21 20:39:10 -04:00