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v1.go
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v1.go
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package nodeattestor
import (
"context"
"errors"
"io"
nodeattestorv1 "github.com/spiffe/spire-plugin-sdk/proto/spire/plugin/agent/nodeattestor/v1"
"github.com/spiffe/spire/pkg/common/plugin"
"google.golang.org/grpc/codes"
)
type V1 struct {
plugin.Facade
nodeattestorv1.NodeAttestorPluginClient
}
func (v1 *V1) Attest(ctx context.Context, serverStream ServerStream) error {
ctx, cancel := context.WithCancel(ctx)
defer cancel()
pluginStream, err := v1.NodeAttestorPluginClient.AidAttestation(ctx)
if err != nil {
return v1.WrapErr(err)
}
payloadOrChallengeResponse, err := pluginStream.Recv()
switch {
case errors.Is(err, io.EOF):
return v1.Error(codes.Internal, "plugin closed stream before returning attestation data")
case err != nil:
return v1.WrapErr(err)
}
payload := payloadOrChallengeResponse.GetPayload()
if len(payload) == 0 {
return v1.Error(codes.Internal, "plugin response missing attestation payload")
}
challenge, err := serverStream.SendAttestationData(ctx, AttestationData{
Type: v1.Name(),
Payload: payload,
})
if err != nil {
return err
}
for {
if challenge == nil {
return nil
}
err = pluginStream.Send(&nodeattestorv1.Challenge{
Challenge: challenge,
})
switch {
case errors.Is(err, io.EOF):
return v1.Error(codes.Internal, "plugin closed stream before handling the challenge")
case err != nil:
return v1.WrapErr(err)
}
payloadOrChallengeResponse, err := pluginStream.Recv()
switch {
case errors.Is(err, io.EOF):
return v1.Error(codes.Internal, "plugin closed stream before handling the challenge")
case err != nil:
return v1.WrapErr(err)
}
challengeResponse := payloadOrChallengeResponse.GetChallengeResponse()
if len(challengeResponse) == 0 {
return v1.Error(codes.Internal, "plugin response missing challenge response")
}
challenge, err = serverStream.SendChallengeResponse(ctx, challengeResponse)
if err != nil {
return err
}
}
}