forked from akash-network/node
/
auth.go
93 lines (79 loc) · 2.05 KB
/
auth.go
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package manifest
import (
"bytes"
"errors"
"github.com/gogo/protobuf/jsonpb"
"github.com/ovrclk/akash/txutil"
"github.com/ovrclk/akash/types"
crypto "github.com/tendermint/tendermint/crypto"
camino "github.com/tendermint/tendermint/crypto/encoding/amino"
)
var (
ErrInvalidSignature = errors.New("invalid signature")
ErrInvalidKey = errors.New("key is not deployment owner")
)
func SignManifest(manifest *types.Manifest, signer txutil.Signer, deployment []byte) (*types.ManifestRequest, []byte, error) {
mr := &types.ManifestRequest{
Deployment: deployment,
Manifest: manifest,
}
buf, err := marshalRequest(mr)
if err != nil {
return nil, nil, err
}
sig, key, err := signer.SignBytes(buf)
if err != nil {
return nil, nil, err
}
mr.Signature = sig
mr.Key = key.Bytes()
buf, err = marshalRequest(mr)
if err != nil {
return nil, nil, err
}
return mr, buf, nil
}
func VerifyRequest(mr *types.ManifestRequest, deployment *types.Deployment) error {
address, err := verifySignature(mr)
if err != nil {
return err
}
if err := verifyDeploymentTenant(deployment, address); err != nil {
return err
}
if err := verifyManifestVersion(mr, deployment); err != nil {
return err
}
return nil
}
func verifySignature(mr *types.ManifestRequest) (crypto.Address, error) {
buf := bytes.Buffer{}
marshaler := jsonpb.Marshaler{}
baseReq := &types.ManifestRequest{
Deployment: mr.Deployment,
Manifest: mr.Manifest,
}
if err := marshaler.Marshal(&buf, baseReq); err != nil {
return nil, err
}
key, err := camino.PubKeyFromBytes(mr.Key)
if err != nil {
return nil, err
}
sig := mr.Signature
if !key.VerifyBytes(buf.Bytes(), sig) {
return nil, ErrInvalidSignature
}
return key.Address(), nil
}
func verifyDeploymentTenant(
deployment *types.Deployment,
signerAddress crypto.Address) error {
if !bytes.Equal(deployment.Tenant, signerAddress) {
return ErrInvalidKey
}
return nil
}
func verifyManifestVersion(mr *types.ManifestRequest, deployment *types.Deployment) error {
return verifyHash(mr.Manifest, deployment.Version)
}