/
signer.go
80 lines (72 loc) · 2.07 KB
/
signer.go
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//
// Copyright (c) SAS Institute Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
package appx
// Sign Windows Universal (UWP) .appx and .appxbundle
import (
"fmt"
"io"
"os"
"github.com/sassoftware/relic/lib/certloader"
"github.com/sassoftware/relic/lib/magic"
"github.com/sassoftware/relic/lib/signappx"
"github.com/sassoftware/relic/signers"
"github.com/sassoftware/relic/signers/zipbased"
)
var AppxSigner = &signers.Signer{
Name: "appx",
Magic: magic.FileTypeAPPX,
CertTypes: signers.CertTypeX509,
Transform: zipbased.Transform,
Sign: sign,
Verify: verify,
}
func init() {
signers.Register(AppxSigner)
}
func sign(r io.Reader, cert *certloader.Certificate, opts signers.SignOpts) ([]byte, error) {
digest, err := signappx.DigestAppxTar(r, opts.Hash, false)
if err != nil {
return nil, err
}
patch, priSig, _, err := digest.Sign(opts.Context(), cert)
if err != nil {
return nil, err
}
opts.Audit.SetCounterSignature(priSig.CounterSignature)
return opts.SetBinPatch(patch)
}
func verify(f *os.File, opts signers.VerifyOpts) ([]*signers.Signature, error) {
size, err := f.Seek(0, io.SeekEnd)
if err != nil {
return nil, err
}
sig, err := signappx.Verify(f, size, opts.NoDigests)
if err != nil {
return nil, err
}
appxSig := sig
if sig.IsBundle {
for _, nested := range sig.Bundled {
appxSig = nested
break
}
}
return []*signers.Signature{&signers.Signature{
Package: fmt.Sprintf("{%s} %s %s", appxSig.Name, appxSig.DisplayName, appxSig.Version),
Hash: sig.Hash,
X509Signature: sig.Signature,
}}, nil
}