new: added events.on (and other related commands) to trigger specific actions when an events happens

modules/events_stream/events_triggers.go

@@ -0,0 +1,62 @@
+package events_stream
+
+import (
+	"os"
+
+	"github.com/bettercap/bettercap/session"
+
+	"github.com/evilsocket/islazy/tui"
+)
+
+func (mod *EventsStream) addTrigger(tag string, command string) error {
+	if err, id := mod.triggerList.Add(tag, command); err != nil {
+		return err
+	} else {
+		mod.Info("trigger for event %s added with identifier '%s'", tui.Green(tag), tui.Bold(id))
+	}
+	return nil
+}
+
+func (mod *EventsStream) clearTrigger(id string) error {
+	if err := mod.triggerList.Del(id); err != nil {
+		return err
+	}
+	return nil
+}
+
+func (mod *EventsStream) showTriggers() error {
+	colNames := []string{
+		"ID",
+		"Event",
+		"Action",
+	}
+	rows := [][]string{}
+
+	mod.triggerList.Each(func(id string, t Trigger) {
+		rows = append(rows, []string{
+			tui.Bold(id),
+			tui.Green(t.For),
+			t.Action,
+		})
+	})
+
+	if len(rows) > 0 {
+		tui.Table(os.Stdout, colNames, rows)
+		mod.Session.Refresh()
+	}
+
+	return nil
+}
+
+func (mod *EventsStream) dispatchTriggers(e session.Event) {
+	if id, cmds, err, found := mod.triggerList.Dispatch(e); err != nil {
+		mod.Error("error while dispatching event %s: %v", e.Tag, err)
+	} else if found {
+		mod.Debug("running trigger %s (cmds:'%s') for event %v", id, cmds, e)
+		for _, cmd := range session.ParseCommands(cmds) {
+			if err := mod.Session.Run(cmd); err != nil {
+				mod.Error("%s", err.Error())
+			}
+		}
+	}
+}