html_url,issue_url,id,node_id,user,created_at,updated_at,author_association,body,reactions,issue,performed_via_github_app
https://github.com/simonw/datasette/issues/1855#issuecomment-1301646670,https://api.github.com/repos/simonw/datasette/issues/1855,1301646670,IC_kwDOBm6k_c5NlY1O,9599,2022-11-03T05:11:26Z,2022-11-03T05:11:26Z,OWNER,That still needs comprehensive tests before I land it.,"{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1423336089,
https://github.com/simonw/datasette/issues/1855#issuecomment-1301646493,https://api.github.com/repos/simonw/datasette/issues/1855,1301646493,IC_kwDOBm6k_c5NlYyd,9599,2022-11-03T05:11:06Z,2022-11-03T05:11:06Z,OWNER,"Built a prototype of the above:
```diff
diff --git a/datasette/default_permissions.py b/datasette/default_permissions.py
index 32b0c758..f68aa38f 100644
--- a/datasette/default_permissions.py
+++ b/datasette/default_permissions.py
@@ -6,8 +6,8 @@ import json
import time
-@hookimpl(tryfirst=True)
-def permission_allowed(datasette, actor, action, resource):
+@hookimpl(tryfirst=True, specname=""permission_allowed"")
+def permission_allowed_default(datasette, actor, action, resource):
async def inner():
if action in (
""permissions-debug"",
@@ -57,6 +57,44 @@ def permission_allowed(datasette, actor, action, resource):
return inner
+@hookimpl(specname=""permission_allowed"")
+def permission_allowed_actor_restrictions(actor, action, resource):
+ if actor is None:
+ return None
+ _r = actor.get(""_r"")
+ if not _r:
+ # No restrictions, so we have no opinion
+ return None
+ action_initials = """".join([word[0] for word in action.split(""-"")])
+ # If _r is defined then we use those to further restrict the actor
+ # Crucially, we only use this to say NO (return False) - we never
+ # use it to return YES (True) because that might over-ride other
+ # restrictions placed on this actor
+ all_allowed = _r.get(""a"")
+ if all_allowed is not None:
+ assert isinstance(all_allowed, list)
+ if action_initials in all_allowed:
+ return None
+ # How about for the current database?
+ if action in (""view-database"", ""view-database-download"", ""execute-sql""):
+ database_allowed = _r.get(""d"", {}).get(resource)
+ if database_allowed is not None:
+ assert isinstance(database_allowed, list)
+ if action_initials in database_allowed:
+ return None
+ # Or the current table? That's any time the resource is (database, table)
+ if not isinstance(resource, str) and len(resource) == 2:
+ database, table = resource
+ table_allowed = _r.get(""t"", {}).get(database, {}).get(table)
+ # TODO: What should this do for canned queries?
+ if table_allowed is not None:
+ assert isinstance(table_allowed, list)
+ if action_initials in table_allowed:
+ return None
+ # This action is not specifically allowed, so reject it
+ return False
+
+
@hookimpl
def actor_from_request(datasette, request):
prefix = ""dstok_""
```","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1423336089,
https://github.com/simonw/datasette/issues/1855#issuecomment-1301594495,https://api.github.com/repos/simonw/datasette/issues/1855,1301594495,IC_kwDOBm6k_c5NlMF_,9599,2022-11-03T03:11:17Z,2022-11-03T03:11:17Z,OWNER,"Maybe the way to do this is through a new standard mechanism on the actor: a set of additional restrictions, e.g.:
```
{
""id"": ""root"",
""_r"": {
""a"": [""ir"", ""ur"", ""dr""],
""d"": {
""fixtures"": [""ir"", ""ur"", ""dr""]
},
""t"": {
""fixtures"": {
""searchable"": [""ir""]
}
}
}
```
`""a""` is ""all permissions"" - these apply to everything.
`""d""` permissions only apply to the specified database
`""t""` permissions only apply to the specified table
The way this works is there's a default [permission_allowed(datasette, actor, action, resource)](https://docs.datasette.io/en/stable/plugin_hooks.html#id25) hook which only consults these, and crucially just says NO if those rules do not match.
In this way it would apply as an extra layer of permission rules over the defaults (which for this `root` instance would all return yes).","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1423336089,
https://github.com/simonw/datasette/issues/1855#issuecomment-1292962813,https://api.github.com/repos/simonw/datasette/issues/1855,1292962813,IC_kwDOBm6k_c5NEQv9,9599,2022-10-27T04:31:40Z,2022-10-27T04:31:40Z,OWNER,"My hunch on this is that anyone with that level of complex permissions requirements needs to be using a custom authentication plugin which includes much more concrete token rules, rather than the default signed stateless token implementation that ships with Datasette core.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1423336089,
https://github.com/simonw/datasette/issues/1855#issuecomment-1292959886,https://api.github.com/repos/simonw/datasette/issues/1855,1292959886,IC_kwDOBm6k_c5NEQCO,9599,2022-10-27T04:30:07Z,2022-10-27T04:30:07Z,OWNER,"Here's an interesting edge-case to consider: what if a user creates themselves a token for a specific table, then deletes that table, and waits for another user to create a table of the same name... and then uses their previously created token to write to the table that someone else created?
Not sure if this is a threat I need to actively consider, but it's worth thinking a little bit about the implications of such a thing - since there will be APIs that allow users to create tables, and there may be cases where people want to have a concept of users ""owning"" specific tables.
This is probably something that could be left for plugins to solve, but it still needs to be understood and potentially documented.
There may even be a world in which tracking the timestamp at which a table was created becomes useful - because that could then be baked into API tokens, such that a token created BEFORE the table was created does not grant access to that table.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1423336089,
https://github.com/simonw/datasette/issues/1855#issuecomment-1291485444,https://api.github.com/repos/simonw/datasette/issues/1855,1291485444,IC_kwDOBm6k_c5M-oEE,9599,2022-10-26T04:30:34Z,2022-10-26T04:30:34Z,OWNER,"I'm going to delay working on this until after I have some of the write APIs built to try it against:
- #1851","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1423336089,