add Installer using globalplatform.CommandSet

cmd/keycard/installer.go

@@ -0,0 +1,73 @@
+package main
+
+import (
+	"fmt"
+	"os"
+	"time"
+
+	"github.com/status-im/keycard-go/globalplatform"
+	"github.com/status-im/keycard-go/hexutils"
+)
+
+// Installer defines a struct with methods to install applets in a card.
+type Installer struct {
+	c globalplatform.Channel
+}
+
+// NewInstaller returns a new Installer that communicates to Transmitter t.
+func NewInstaller(t globalplatform.Transmitter) *Installer {
+	return &Installer{
+		c: globalplatform.NewNormalChannel(t),
+	}
+}
+
+// Install installs the applet from the specified capFile.
+func (i *Installer) Install(capFile *os.File, overwriteApplet bool) (err error) {
+	logger.Debug("installation started")
+	startTime := time.Now()
+	cmdSet := globalplatform.NewCommandSet(i.c)
+
+	logger.Debug("select ISD")
+	if err = cmdSet.Select(); err != nil {
+		logger.Error("select failed", "error", err)
+		return err
+	}
+
+	logger.Debug("opening secure channel")
+	if err = cmdSet.OpenSecureChannel(); err != nil {
+		logger.Error("open secure channel failed", "error", err)
+		return err
+	}
+
+	logger.Debug("delete old version (if present)")
+	if err = cmdSet.DeleteKeycardInstancesAndPackage(); err != nil {
+		logger.Error("delete keycard instances and package failed", "error", err)
+		return err
+	}
+
+	logger.Debug("loading package")
+	callback := func(index, total int) {
+		logger.Debug(fmt.Sprintf("loading %d/%d", index+1, total))
+	}
+	if err = cmdSet.LoadKeycardPackage(capFile, callback); err != nil {
+		logger.Error("load failed", "error", err)
+		return err
+	}
+
+	logger.Debug("installing NDEF applet")
+	ndefRecord := hexutils.HexToBytes("0024d40f12616e64726f69642e636f6d3a706b67696d2e7374617475732e657468657265756d")
+	if err = cmdSet.InstallNDEFApplet(ndefRecord); err != nil {
+		logger.Error("installing NDEF applet failed", "error", err)
+		return err
+	}
+
+	logger.Debug("installing Keycard applet")
+	if err = cmdSet.InstallKeycardApplet(); err != nil {
+		logger.Error("installing Keycard applet failed", "error", err)
+		return err
+	}
+
+	elapsed := time.Now().Sub(startTime)
+	logger.Info(fmt.Sprintf("installation completed in %f seconds", elapsed.Seconds()))
+	return err
+}