tailscale/cmd/tailscaled
Nick Khyl cab0e1a6f7 uti/syspolicy: user policy support, auto-refresh and initial preparation for policy structs
This updates the syspolicy package to support multiple policy sources in the
three policy scopes: user, profile, and device, and provides a merged resultant
policy. A policy source is a syspolicy/source.Store that has a name and provides
access to policy settings for a given scope. It can be registered with
syspolicy/rsop.RegisterStore. Policy sources and policy stores can be either
platform-specific or platform-agnostic. On Windows, we have the Registry-based,
platform-specific policy store implemented as
syspolicy/source.PlatformPolicyStore. This store provides access to the Group
Policy and MDM policy settings stored in the Registry. On other platforms, we
currently provide a wrapper that converts a syspolicy.Handler into a
syspolicy/source.Store. However, we should update them in follow-up PRs. An
example of a platform-agnostic policy store would be a policy deployed from the
control, a local policy config file, or even environment variables.

We maintain the current, most recent version of the resultant policy for each
scope in an rsop.Policy. This is done by reading and merging the policy settings
from the registered stores the first time the resultant policy is requested,
then re-reading and re-merging them if a store implements the source.Changeable
interface and reports a policy change. Policy change notifications are debounced
to avoid re-reading policy settings multiple times if there are several changes
within a short period. The rsop.Policy can notify clients if the resultant
policy has changed. However, we do not currently expose this via the syspolicy
package and plan to do so differently along with a struct-based policy hierarchy
in the next PR.

To facilitate this, all policy settings should be registered with the
setting.Register function. The syspolicy package does this automatically for all
policy settings defined in policy_keys.go.

The new functionality is available through the existing syspolicy.Read* set of
functions. However, we plan to expose it via a struct-based policy hierarchy,
along with policy change notifications that other subsystems can use, in the
next PR. We also plan to send the resultant policy back from tailscaled to the
clients via the LocalAPI.

This is primarily a foundational PR to facilitate future changes, but the
immediate observable changes on Windows include:
- The service will use the current policy setting values instead of those read
  at OS boot time.
- The GUI has access to policy settings configured on a per-user basis.
On Android:
- We now report policy setting usage via clientmetrics.

Updates #12687

Signed-off-by: Nick Khyl <nickk@tailscale.com>
2024-08-02 20:01:13 -05:00
..
childproc all: update copyright and license headers 2023-01-27 15:36:29 -08:00
debug.go net/netmon, add: add netmon.State type alias of interfaces.State 2024-04-28 07:34:52 -07:00
depaware.txt uti/syspolicy: user policy support, auto-refresh and initial preparation for policy structs 2024-08-02 20:01:13 -05:00
generate.go cmd/mkmanifest, cmd/tailscale, cmd/tailscaled: remove Windows arm32 resources from OSS 2023-03-01 15:45:12 -07:00
install_darwin.go all: update copyright and license headers 2023-01-27 15:36:29 -08:00
install_windows.go all: update copyright and license headers 2023-01-27 15:36:29 -08:00
manifest_windows_386.syso cmd/{tailscale,tailscaled}: embed manifest into Windows binaries 2022-11-21 18:15:51 -05:00
manifest_windows_amd64.syso cmd/{tailscale,tailscaled}: embed manifest into Windows binaries 2022-11-21 18:15:51 -05:00
manifest_windows_arm64.syso cmd/{tailscale,tailscaled}: embed manifest into Windows binaries 2022-11-21 18:15:51 -05:00
proxy.go all: update copyright and license headers 2023-01-27 15:36:29 -08:00
required_version.go all: require Go 1.21 2023-08-08 21:15:08 -07:00
sigpipe.go all: adjust some build tags for plan9 2023-08-24 15:42:35 -07:00
ssh.go all: update copyright and license headers 2023-01-27 15:36:29 -08:00
taildrop.go taildrop: remove breaking abstraction layers for apple (#10728) 2024-01-09 14:11:34 -06:00
tailscaled_bird.go all: update copyright and license headers 2023-01-27 15:36:29 -08:00
tailscaled_notwindows.go all: update copyright and license headers 2023-01-27 15:36:29 -08:00
tailscaled_test.go all: do not depend on the testing package 2024-05-24 05:23:36 -07:00
tailscaled_windows.go cmd/tailscaled, net/dns, wgengine/router: start Windows child processes with DETACHED_PROCESS when I/O is being piped 2024-06-11 11:35:26 -06:00
tailscaled.defaults cmd/tailscaled: rename relaynode reference in defaults file comment 2020-03-13 14:38:04 -07:00
tailscaled.go net/dns, cmd/tailscaled: plumb system health tracker into dns cleanup (#12969) 2024-07-30 12:54:03 -04:00
tailscaled.openrc tstest/integration/vms: use an in-process logcatcher (#2360) 2021-07-08 14:39:45 -04:00
tailscaled.service cmd/tailscaled: move cleanup to an implicit action during startup 2024-04-09 12:44:08 -07:00
windows-manifest.xml cmd/{tailscale,tailscaled}: embed manifest into Windows binaries 2022-11-21 18:15:51 -05:00
with_cli.go all: update copyright and license headers 2023-01-27 15:36:29 -08:00