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explicitly initialize struct

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This commit is contained in:
Moritz Sanft 2023-10-09 14:37:40 +02:00 committed by Malte Poll
parent 6f53dc90cf
commit 8749cafcbd
2 changed files with 14 additions and 1 deletions
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1
internal/attestation/vtpm/BUILD.bazel
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@ -12,6 +12,7 @@ go_library(
deps = [
"//internal/attestation",
"//internal/attestation/measurements",
"@com_github_google_go_sev_guest//proto/sevsnp",
"@com_github_google_go_tpm//legacy/tpm2",
"@com_github_google_go_tpm_tools//client",
"@com_github_google_go_tpm_tools//proto/attest",

14
internal/attestation/vtpm/attestation.go
View File

@ -14,6 +14,7 @@ import (
"fmt"
"io"
"github.com/google/go-sev-guest/proto/sevsnp"
tpmClient "github.com/google/go-tpm-tools/client"
"github.com/google/go-tpm-tools/proto/attest"
tpmProto "github.com/google/go-tpm-tools/proto/tpm"
@ -183,7 +184,18 @@ func (v *Validator) Validate(ctx context.Context, attDocRaw []byte, nonce []byte
}
}()
var attDoc AttestationDocument
// Explicitly initialize this struct, as TeeAttestation
// is a "oneof" protobuf field, which needs an explicit
// type to be set to be unmarshaled correctly.
// Note: this value is incompatible with TDX attestation!
// TODO(msanft): select the correct attestation type (SEV-SNP, TDX, ...) here.
attDoc := AttestationDocument{
Attestation: &attest.Attestation{
TeeAttestation: &attest.Attestation_SevSnpAttestation{
SevSnpAttestation: &sevsnp.Attestation{},
},
},
}
if err := json.Unmarshal(attDocRaw, &attDoc); err != nil {
return nil, fmt.Errorf("unmarshaling TPM attestation document: %w", err)
}