func GenerateV1Image()

in image/v1.go [439:489]
41 lines of code
9 McCabe index (conditional complexity)

func GenerateV1Image(opts ImageCreateOpts) (ImageV1, error) {
	ic := NewImageCreator()

	srcBin, err := ioutil.ReadFile(opts.SrcBinFilename)
	if err != nil {
		return ImageV1{}, errors.Wrapf(err, "can't read app binary")
	}

	ic.Body = srcBin
	ic.Version = opts.Version
	ic.SigKeys = opts.SigKeys

	if opts.LoaderHash != nil {
		ic.InitialHash = opts.LoaderHash
		ic.Bootable = false
	} else {
		ic.Bootable = true
	}

	if opts.SrcEncKeyFilename != "" {
		plainSecret, err := GeneratePlainSecret()
		if err != nil {
			return ImageV1{}, err
		}

		pubKeBytes, err := ioutil.ReadFile(opts.SrcEncKeyFilename)
		if err != nil {
			return ImageV1{}, errors.Wrapf(err, "error reading pubkey file")
		}

		pubKe, err := sec.ParsePubEncKey(pubKeBytes)
		if err != nil {
			return ImageV1{}, err
		}

		cipherSecret, err := pubKe.Encrypt(plainSecret)
		if err != nil {
			return ImageV1{}, err
		}

		ic.PlainSecret = plainSecret
		ic.CipherSecret = cipherSecret
	}

	ri, err := ic.CreateV1()
	if err != nil {
		return ImageV1{}, err
	}

	return ri, nil
}