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[client] Fix race conditions (#2869)

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* Fix concurrent map access in status

* Fix race when retrieving ctx state error

* Fix race when accessing service controller server instance
This commit is contained in:
Viktor Liu 2024-11-11 14:55:10 +01:00 committed by GitHub
parent 30f025e7dd
commit e0bed2b0fb
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GPG Key ID: B5690EEEBB952194
4 changed files with 13 additions and 6 deletions
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2
client/cmd/service.go
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@ -2,6 +2,7 @@ package cmd
import (
"context"
"sync"
"github.com/kardianos/service"
log "github.com/sirupsen/logrus"
@ -17,6 +18,7 @@ type program struct {
cancel context.CancelFunc
serv *grpc.Server
serverInstance *server.Server
serverInstanceMu sync.Mutex
}
func newProgram(ctx context.Context, cancel context.CancelFunc) *program {

4
client/cmd/service_controller.go
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@ -61,7 +61,9 @@ func (p *program) Start(svc service.Service) error {
}
proto.RegisterDaemonServiceServer(p.serv, serverInstance)
p.serverInstanceMu.Lock()
p.serverInstance = serverInstance
p.serverInstanceMu.Unlock()
log.Printf("started daemon server: %v", split[1])
if err := p.serv.Serve(listen); err != nil {
@ -72,6 +74,7 @@ func (p *program) Start(svc service.Service) error {
}
func (p *program) Stop(srv service.Service) error {
p.serverInstanceMu.Lock()
if p.serverInstance != nil {
in := new(proto.DownRequest)
_, err := p.serverInstance.Down(p.ctx, in)
@ -79,6 +82,7 @@ func (p *program) Stop(srv service.Service) error {
log.Errorf("failed to stop daemon: %v", err)
}
}
p.serverInstanceMu.Unlock()
p.cancel()

3
client/internal/connect.go
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@ -207,7 +207,8 @@ func (c *ConnectClient) run(mobileDependency MobileDependency, probes *ProbeHold
c.statusRecorder.MarkSignalDisconnected(nil)
defer func() {
c.statusRecorder.MarkSignalDisconnected(state.err)
_, err := state.Status()
c.statusRecorder.MarkSignalDisconnected(err)
}()
// with the global Wiretrustee config in hand connect (just a connection, no stream yet) Signal

2
client/internal/peer/status.go
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@ -67,7 +67,7 @@ func (s *State) DeleteRoute(network string) {
func (s *State) GetRoutes() map[string]struct{} {
s.Mux.RLock()
defer s.Mux.RUnlock()
return s.routes
return maps.Clone(s.routes)
}
// LocalPeerState contains the latest state of the local peer