{"record":{"id":"ae28d9ac8acdc15f","repo":"hyperledger/fabric","slug":"error-getting-deployment-spec","errorCode":null,"errorMessage":"error getting deployment spec","messagePattern":"error getting deployment spec","errorType":"validation","errorClass":null,"httpStatus":null,"severity":"error","filePath":"core/common/ccprovider/sigcdspackage.go","lineNumber":241,"sourceCode":"func (ccpack *SignedCDSPackage) InitFromBuffer(buf []byte) (*ChaincodeData, error) {\n\tenv := &common.Envelope{}\n\terr := proto.Unmarshal(buf, env)\n\tif err != nil {\n\t\treturn nil, errors.New(\"failed to unmarshal envelope from bytes\")\n\t}\n\tcHdr, sDepSpec, err := ccpackage.ExtractSignedCCDepSpec(env)\n\tif err != nil {\n\t\treturn nil, err\n\t}\n\n\tif cHdr.Type != int32(common.HeaderType_CHAINCODE_PACKAGE) {\n\t\treturn nil, errors.New(\"invalid type of envelope for chaincode package\")\n\t}\n\n\tdepSpec := &pb.ChaincodeDeploymentSpec{}\n\terr = proto.Unmarshal(sDepSpec.ChaincodeDeploymentSpec, depSpec)\n\tif err != nil {\n\t\treturn nil, errors.New(\"error getting deployment spec\")\n\t}\n\n\tdatabytes, id, data, err := ccpack.getCDSData(sDepSpec)\n\tif err != nil {\n\t\treturn nil, err\n\t}\n\n\tccpack.buf = buf\n\tccpack.sDepSpec = sDepSpec\n\tccpack.depSpec = depSpec\n\tccpack.env = env\n\tccpack.data = data\n\tccpack.datab = databytes\n\tccpack.id = id\n\n\treturn ccpack.GetChaincodeData(), nil\n}\n","sourceCodeStart":223,"sourceCodeEnd":259,"githubUrl":"https://github.com/hyperledger/fabric/blob/2736b63f8fd5932511d56fe68b7039d15977f7f6/core/common/ccprovider/sigcdspackage.go#L223-L259","documentation":"InitFromBuffer unmarshals the SignedChaincodeDeploymentSpec's inner ChaincodeDeploymentSpec bytes into a pb.ChaincodeDeploymentSpec and fails if protobuf parsing errors. This error masks the underlying parse error, indicating the signed package's inner spec bytes are corrupt or not a CDS.","triggerScenarios":"InitFromBuffer with a CHAINCODE_PACKAGE envelope whose SignedChaincodeDeploymentSpec.chaincode_deployment_spec field is not a valid serialized ChaincodeDeploymentSpec.","commonSituations":"Corrupted/truncated package file; custom packaging code that put the wrong bytes in the inner spec field; version skew between the tool that produced the package and the peer.","solutions":["Regenerate the package with a matching fabric version of `peer chaincode package`/`signpackage`","Verify the inner spec bytes are proto.Marshal output of a populated ChaincodeDeploymentSpec","Re-transfer the package file and compare checksums"],"exampleFix":"// before\nsDepSpec.ChaincodeDeploymentSpec = []byte(rawJSON) // wrong encoding\n// after\nsDepSpec.ChaincodeDeploymentSpec, _ = proto.Marshal(depSpec) // valid CDS protobuf","handlingStrategy":"validation","validationCode":"func validateInnerCDS(s *pb.SignedChaincodeDeploymentSpec) error {\n    cds := &pb.ChaincodeDeploymentSpec{}\n    if err := proto.Unmarshal(s.ChaincodeDeploymentSpec, cds); err != nil {\n        return fmt.Errorf(\"inner deployment spec is not a valid CDS: %w\", err)\n    }\n    if cds.ChaincodeSpec == nil { return errors.New(\"CDS missing ChaincodeSpec\") }\n    return nil\n}","typeGuard":"func hasValidInnerCDS(s *pb.SignedChaincodeDeploymentSpec) bool {\n    cds := &pb.ChaincodeDeploymentSpec{}\n    return s != nil && proto.Unmarshal(s.ChaincodeDeploymentSpec, cds) == nil && cds.ChaincodeSpec != nil\n}","tryCatchPattern":"cd, err := GetCCPackage(buf, idFunc)\nif err != nil {\n    if strings.Contains(err.Error(), \"error getting deployment spec\") {\n        return fmt.Errorf(\"corrupt inner deployment spec; repackage with a matching fabric version: %w\", err)\n    }\n    return err\n}","preventionTips":["Pin the same fabric version for packaging tools and peers","Marshaled protobuf only — never JSON/other encodings — in the inner spec field","Verify package checksums after transfer"],"tags":["chaincode","fabric","protobuf","deserialization"],"backgroundTag":"invalid-protobuf-payload","analyzedSha":"2736b63f8fd5932511d56fe68b7039d15977f7f6","analyzedAt":"2026-09-04T08:52:36.465Z","contentChangedAt":"2026-09-04T08:52:36.465Z","schemaVersion":2},"datasetVersion":"2026-09-08T10:18:20.063Z"}