140 lines
3.8 KiB
Go
140 lines
3.8 KiB
Go
package main
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import (
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"errors"
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"fmt"
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"os"
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"time"
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"github.com/status-im/keycard-go/apdu"
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"github.com/status-im/keycard-go/globalplatform"
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"github.com/status-im/keycard-go/hexutils"
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"github.com/status-im/keycard-go/identifiers"
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keycardio "github.com/status-im/keycard-go/io"
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"github.com/status-im/keycard-go/types"
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)
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var (
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ErrAppletAlreadyInstalled = errors.New("keycard applet already installed")
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ndefRecord = hexutils.HexToBytes("0024d40f12616e64726f69642e636f6d3a706b67696d2e7374617475732e657468657265756d")
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)
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// Installer defines a struct with methods to install applets in a card.
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type Installer struct {
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c types.Channel
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}
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// NewInstaller returns a new Installer that communicates to Transmitter t.
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func NewInstaller(t keycardio.Transmitter) *Installer {
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return &Installer{
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c: keycardio.NewNormalChannel(t),
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}
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}
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// Install installs the applet from the specified capFile.
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func (i *Installer) Install(capFile *os.File, overwriteApplet bool) error {
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logger.Info("installation started")
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startTime := time.Now()
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cmdSet := globalplatform.NewCommandSet(i.c)
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logger.Info("check if keycard is already installed")
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if err := i.checkAppletAlreadyInstalled(cmdSet, overwriteApplet); err != nil {
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logger.Error("check if keycard is already installed failed", "error", err)
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return err
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}
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logger.Info("select ISD")
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err := cmdSet.Select()
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if err != nil {
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logger.Error("select failed", "error", err)
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return err
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}
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logger.Info("opening secure channel")
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if err = cmdSet.OpenSecureChannel(); err != nil {
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logger.Error("open secure channel failed", "error", err)
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return err
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}
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logger.Info("delete old version (if present)")
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if err = cmdSet.DeleteKeycardInstancesAndPackage(); err != nil {
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logger.Error("delete keycard instances and package failed", "error", err)
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return err
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}
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logger.Info("loading package")
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callback := func(index, total int) {
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logger.Debug(fmt.Sprintf("loading %d/%d", index+1, total))
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}
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if err = cmdSet.LoadKeycardPackage(capFile, callback); err != nil {
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logger.Error("load failed", "error", err)
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return err
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}
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logger.Info("installing NDEF applet")
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if err = cmdSet.InstallNDEFApplet(ndefRecord); err != nil {
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logger.Error("installing NDEF applet failed", "error", err)
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return err
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}
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logger.Info("installing Keycard applet")
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if err = cmdSet.InstallKeycardApplet(); err != nil {
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logger.Error("installing Keycard applet failed", "error", err)
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return err
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}
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elapsed := time.Now().Sub(startTime)
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logger.Info(fmt.Sprintf("installation completed in %f seconds", elapsed.Seconds()))
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return err
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}
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// Delete deletes the applet from the card.
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func (i *Installer) Delete() error {
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cmdSet := globalplatform.NewCommandSet(i.c)
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logger.Info("select ISD")
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err := cmdSet.Select()
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if err != nil {
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logger.Error("select failed", "error", err)
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return err
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}
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logger.Info("opening secure channel")
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if err = cmdSet.OpenSecureChannel(); err != nil {
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logger.Error("open secure channel failed", "error", err)
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return err
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}
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logger.Info("delete old version")
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if err = cmdSet.DeleteKeycardInstancesAndPackage(); err != nil {
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logger.Error("delete keycard instances and package failed", "error", err)
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return err
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}
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return nil
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}
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func (i *Installer) checkAppletAlreadyInstalled(cmdSet *globalplatform.CommandSet, overwriteApplet bool) error {
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keycardInstanceAID, err := identifiers.KeycardInstanceAID(identifiers.KeycardDefaultInstanceIndex)
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if err != nil {
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return err
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}
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err = cmdSet.SelectAID(keycardInstanceAID)
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switch e := err.(type) {
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case *apdu.ErrBadResponse:
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// keycard applet not found, so not installed yet.
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if e.Sw == globalplatform.SwFileNotFound {
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return nil
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}
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return err
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case nil: // selected successfully, so it's already installed
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if overwriteApplet {
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return nil
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}
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return ErrAppletAlreadyInstalled
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default:
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return err
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}
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}
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