osquery-1/specs/groups.table
drakearonhalt e205458be0 Added is_hidden column to the users and groups tables on macOS. (#5368)
Summary:
This PR is the result of the discussion in a previous PR (#5348) after we determined account_policy_data was the wrong place for the column.

Add `is_hidden` column to the users and groups tables in macOS. `is_hidden` is populated by looking for the `dsAttrTypeNative:IsHidden` attribute in the OpenDirectory record for the user/group if the value is `1`, `True`, or `Yes` is_hidden is 1. If the value is anything else it's set to 0. Invalid values have the same affect as the attribute not existing at all.

The `dsAttrTypeNative:IsHidden` attribute controls whether a user account is is visible in the preferences panel similar to having a uid < 500.

One test failed when running buck test:
```
====STANDARD OUT====
tests/integration/tables/helper.cpp:159: Failure
Value of: boost::get<CustomCheckerType>(validator)(value)
  Actual: false
Expected: true
Custom validator of the column "mask" with value "" failed
```
This also fails when I ran the test on the current experimental branch as well.

Important to note I had to remove the optimization on both the user and group tables that just called `getpwnam` if the query specified the `uid` or `gid` since the struct returned doesn't contain the `IsHidden` attribute.  I'm not sure if or how much this will affect performance since I wasn't able to get the profiling to work with the new version (very likely I'm just doing it incorrectly).
Pull Request resolved: https://github.com/facebook/osquery/pull/5368

Differential Revision: D13862375

Pulled By: akindyakov

fbshipit-source-id: 1fec88a6ba71884f7e611e1d96ea00630c5be655
2019-01-30 09:07:56 -08:00

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table_name("groups")
description("Local system groups.")
schema([
Column("gid", BIGINT, "Unsigned int64 group ID", index=True),
Column("gid_signed", BIGINT, "A signed int64 version of gid"),
Column("groupname", TEXT, "Canonical local group name"),
])
extended_schema(WINDOWS, [
Column("group_sid", TEXT, "Unique group ID", index=True),
Column("comment", TEXT, "Remarks or comments associated with the group"),
])
extended_schema(DARWIN, [
Column("is_hidden", INTEGER, "IsHidden attribute set in OpenDirectory"),
])
implementation("groups@genGroups")
examples([
"select * from groups where gid = 0",
# Group/user_groups is not JOIN optimized
#"select g.groupname, ug.uid from groups g, user_groups ug where g.gid = ug.gid",
# The relative group ID, or RID, is used by osquery as the "gid"
# For Windows, "gid" and "gid_signed" will always be the same.
])