Fix nil pointer interface assignment (#750)

CHANGELOG.md

@@ -3,6 +3,7 @@
 - Fix SetFirmwarePassword and VerifyFirmwarePassword parameters (#743)
 - Command UUID can now be passed in as as a request parameter (#754)
 - Update to SCEP v2, switch to Mozilla PKCS7 fork, interface cleanup (#737)
+- Fix panic when using DEP mdmctl commands with no DEP tokens configured (#750)
 
 ## [v1.8.0](https://github.com/micromdm/micromdm/compare/v1.7.1...v1.8.0) February, 2021
 

cmd/micromdm/serve.go

@@ -232,7 +232,6 @@ func serve(args []string) error {
 	ctx := context.Background()
 	httpLogger := log.With(logger, "transport", "http")
 
-	dc := sm.DEPClient
 	appDB := &appsbuiltin.Repo{Path: *flRepoPath}
 
 	scepEndpoints := scep.MakeServerEndpoints(sm.SCEPService)
@@ -296,6 +295,10 @@ func serve(args []string) error {
 		commandEndpoints := command.MakeServerEndpoints(sm.CommandService, basicAuthEndpointMiddleware)
 		command.RegisterHTTPHandlers(r, commandEndpoints, options...)
 
+		var dc depapi.DEPClient
+		if sm.DEPClient != nil {
+			dc = sm.DEPClient
+		}
 		depsvc := depapi.New(dc, sm.PubClient)
 		depsvc.Run()
 		depEndpoints := depapi.MakeServerEndpoints(depsvc, basicAuthEndpointMiddleware)