You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
133 lines
3.6 KiB
133 lines
3.6 KiB
package privval
|
|
|
|
import (
|
|
"fmt"
|
|
"time"
|
|
|
|
"github.com/tendermint/tendermint/crypto"
|
|
cryptoenc "github.com/tendermint/tendermint/crypto/encoding"
|
|
privvalproto "github.com/tendermint/tendermint/proto/tendermint/privval"
|
|
tmproto "github.com/tendermint/tendermint/proto/tendermint/types"
|
|
"github.com/tendermint/tendermint/types"
|
|
)
|
|
|
|
// SignerClient implements PrivValidator.
|
|
// Handles remote validator connections that provide signing services
|
|
type SignerClient struct {
|
|
endpoint *SignerListenerEndpoint
|
|
chainID string
|
|
}
|
|
|
|
var _ types.PrivValidator = (*SignerClient)(nil)
|
|
|
|
// NewSignerClient returns an instance of SignerClient.
|
|
// it will start the endpoint (if not already started)
|
|
func NewSignerClient(endpoint *SignerListenerEndpoint, chainID string) (*SignerClient, error) {
|
|
if !endpoint.IsRunning() {
|
|
if err := endpoint.Start(); err != nil {
|
|
return nil, fmt.Errorf("failed to start listener endpoint: %w", err)
|
|
}
|
|
}
|
|
|
|
return &SignerClient{endpoint: endpoint, chainID: chainID}, nil
|
|
}
|
|
|
|
// Close closes the underlying connection
|
|
func (sc *SignerClient) Close() error {
|
|
return sc.endpoint.Close()
|
|
}
|
|
|
|
// IsConnected indicates with the signer is connected to a remote signing service
|
|
func (sc *SignerClient) IsConnected() bool {
|
|
return sc.endpoint.IsConnected()
|
|
}
|
|
|
|
// WaitForConnection waits maxWait for a connection or returns a timeout error
|
|
func (sc *SignerClient) WaitForConnection(maxWait time.Duration) error {
|
|
return sc.endpoint.WaitForConnection(maxWait)
|
|
}
|
|
|
|
//--------------------------------------------------------
|
|
// Implement PrivValidator
|
|
|
|
// Ping sends a ping request to the remote signer
|
|
func (sc *SignerClient) Ping() error {
|
|
response, err := sc.endpoint.SendRequest(mustWrapMsg(&privvalproto.PingRequest{}))
|
|
if err != nil {
|
|
sc.endpoint.Logger.Error("SignerClient::Ping", "err", err)
|
|
return nil
|
|
}
|
|
|
|
pb := response.GetPingResponse()
|
|
if pb == nil {
|
|
return err
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
// GetPubKey retrieves a public key from a remote signer
|
|
// returns an error if client is not able to provide the key
|
|
func (sc *SignerClient) GetPubKey() (crypto.PubKey, error) {
|
|
response, err := sc.endpoint.SendRequest(mustWrapMsg(&privvalproto.PubKeyRequest{ChainId: sc.chainID}))
|
|
if err != nil {
|
|
return nil, fmt.Errorf("send: %w", err)
|
|
}
|
|
|
|
resp := response.GetPubKeyResponse()
|
|
if resp == nil {
|
|
return nil, ErrUnexpectedResponse
|
|
}
|
|
if resp.Error != nil {
|
|
return nil, &RemoteSignerError{Code: int(resp.Error.Code), Description: resp.Error.Description}
|
|
}
|
|
|
|
pk, err := cryptoenc.PubKeyFromProto(resp.PubKey)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return pk, nil
|
|
}
|
|
|
|
// SignVote requests a remote signer to sign a vote
|
|
func (sc *SignerClient) SignVote(chainID string, vote *tmproto.Vote) error {
|
|
response, err := sc.endpoint.SendRequest(mustWrapMsg(&privvalproto.SignVoteRequest{Vote: vote, ChainId: chainID}))
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
resp := response.GetSignedVoteResponse()
|
|
if resp == nil {
|
|
return ErrUnexpectedResponse
|
|
}
|
|
if resp.Error != nil {
|
|
return &RemoteSignerError{Code: int(resp.Error.Code), Description: resp.Error.Description}
|
|
}
|
|
|
|
*vote = resp.Vote
|
|
|
|
return nil
|
|
}
|
|
|
|
// SignProposal requests a remote signer to sign a proposal
|
|
func (sc *SignerClient) SignProposal(chainID string, proposal *tmproto.Proposal) error {
|
|
response, err := sc.endpoint.SendRequest(mustWrapMsg(
|
|
&privvalproto.SignProposalRequest{Proposal: proposal, ChainId: chainID},
|
|
))
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
resp := response.GetSignedProposalResponse()
|
|
if resp == nil {
|
|
return ErrUnexpectedResponse
|
|
}
|
|
if resp.Error != nil {
|
|
return &RemoteSignerError{Code: int(resp.Error.Code), Description: resp.Error.Description}
|
|
}
|
|
|
|
*proposal = resp.Proposal
|
|
|
|
return nil
|
|
}
|