new: new can module for CAN-bus

modules/can/can_show.go

@@ -0,0 +1,50 @@
+package can
+
+import (
+	"time"
+
+	"github.com/bettercap/bettercap/network"
+	"github.com/dustin/go-humanize"
+	"github.com/evilsocket/islazy/tui"
+)
+
+var (
+	AliveTimeInterval      = time.Duration(5) * time.Minute
+	PresentTimeInterval    = time.Duration(1) * time.Minute
+	JustJoinedTimeInterval = time.Duration(10) * time.Second
+)
+
+func (mod *CANModule) getRow(dev *network.CANDevice) []string {
+	sinceLastSeen := time.Since(dev.LastSeen)
+	seen := dev.LastSeen.Format("15:04:05")
+
+	if sinceLastSeen <= JustJoinedTimeInterval {
+		seen = tui.Bold(seen)
+	} else if sinceLastSeen > PresentTimeInterval {
+		seen = tui.Dim(seen)
+	}
+
+	return []string{
+		dev.Name,
+		dev.Description,
+		humanize.Bytes(dev.Read),
+		seen,
+	}
+}
+
+func (mod *CANModule) Show() (err error) {
+	devices := mod.Session.CAN.Devices()
+
+	rows := make([][]string, 0)
+	for _, dev := range devices {
+		rows = append(rows, mod.getRow(dev))
+	}
+
+	tui.Table(mod.Session.Events.Stdout, []string{"Name", "Description", "Data", "Seen"}, rows)
+
+	if len(rows) > 0 {
+		mod.Session.Refresh()
+	}
+
+	return nil
+}