Don't run install scripts if disabled; closes pterodactyl/panel#2265

installer/installer.go

@@ -26,14 +26,11 @@ func New(data []byte) (*Installer, error) {
 		return nil, NewValidationError("uuid provided was not in a valid format")
 	}
 
-	if !govalidator.IsUUIDv4(getString(data, "service", "egg")) {
-		return nil, NewValidationError("service egg provided was not in a valid format")
-	}
-
 	cfg := &server.Configuration{
 		Uuid:       getString(data, "uuid"),
 		Suspended:  false,
 		Invocation: getString(data, "invocation"),
+		SkipEggScripts: getBoolean(data, "skip_egg_scripts"),
 		Build: environment.Limits{
 			MemoryLimit: getInt(data, "build", "memory"),
 			Swap:        getInt(data, "build", "swap"),
@@ -117,7 +114,6 @@ func (i *Installer) Execute() {
 	}
 
 	l.Debug("creating required environment for server instance")
-	// TODO: ensure data directory exists.
 	if err := i.server.Environment.Create(); err != nil {
 		l.WithField("error", err).Error("failed to create environment for server")
 		return
@@ -139,3 +135,9 @@ func getInt(data []byte, key ...string) int64 {
 
 	return value
 }
+
+func getBoolean(data []byte, key ...string) bool {
+	value, _ := jsonparser.GetBoolean(data, key...)
+
+	return value
+}

server/configuration.go

@@ -20,6 +20,10 @@ type Configuration struct {
 	// The command that should be used when booting up the server instance.
 	Invocation string `json:"invocation"`
 
+	// By default this is false, however if selected within the Panel while installing or re-installing a
+	// server, specific installation scripts will be skipped for the server process.
+	SkipEggScripts bool `default:"false" json:"skip_egg_scripts"`
+
 	// An array of environment variables that should be passed along to the running
 	// server process.
 	EnvVars environment.Variables `json:"environment"`

server/install.go

@@ -35,10 +35,17 @@ func (s *Server) Install(sync bool) error {
 		}
 	}
 
-	// Send the start event so the Panel can automatically update.
+	var err error
+	if !s.Config().SkipEggScripts {
+		// Send the start event so the Panel can automatically update. We don't send this unless the process
+		// is actually going to run, otherwise all sorts of weird rapid UI behavior happens since there isn't
+		// an actual install process being executed.
 		s.Events().Publish(InstallStartedEvent, "")
 
-	err := s.internalInstall()
+		err = s.internalInstall()
+	} else {
+		s.Log().Info("server configured to skip running installation scripts for this egg, not executing process")
+	}
 
 	s.Log().Debug("notifying panel of server install state")
 	if serr := s.SyncInstallState(err == nil); serr != nil {

server/update.go

@@ -80,6 +80,14 @@ func (s *Server) UpdateDataStructure(data []byte) error {
 		c.Suspended = v
 	}
 
+	if v, err := jsonparser.GetBoolean(data, "skip_egg_scripts"); err != nil {
+		if err != jsonparser.KeyPathNotFoundError {
+			return errors.WithStack(err)
+		}
+	} else {
+		c.SkipEggScripts = v
+	}
+
 	// Environment and Mappings should be treated as a full update at all times, never a
 	// true patch, otherwise we can't know what we're passing along.
 	if src.EnvVars != nil && len(src.EnvVars) > 0 {