Encode challenge errors and validation records when handling protobufs (#2520)

Previously we had `Error` and `ValidationRecords` fields in the `Challenge` protobuf but they were never populated which mean't that when using gRPC these fields wouldn't be sent to the SA from the RA on a `FinalizeAuthorization` call. This change populates those fields and updates the PB marshaling tests to verify the correct behavior.

Fixes #2514.

grpc/pb-marshalling.go

@@ -90,12 +90,25 @@ func pbToProblemDetails(in *corepb.ProblemDetails) (*probs.ProblemDetails, error
 
 func challengeToPB(challenge core.Challenge) (*corepb.Challenge, error) {
 	st := string(challenge.Status)
+	prob, err := problemDetailsToPB(challenge.Error)
+	if err != nil {
+		return nil, err
+	}
+	recordAry := make([]*corepb.ValidationRecord, len(challenge.ValidationRecord))
+	for i, v := range challenge.ValidationRecord {
+		recordAry[i], err = validationRecordToPB(v)
+		if err != nil {
+			return nil, err
+		}
+	}
 	return &corepb.Challenge{
-		Id:               &challenge.ID,
-		Type:             &challenge.Type,
-		Status:           &st,
-		Token:            &challenge.Token,
-		KeyAuthorization: &challenge.ProvidedKeyAuthorization,
+		Id:                &challenge.ID,
+		Type:              &challenge.Type,
+		Status:            &st,
+		Token:             &challenge.Token,
+		KeyAuthorization:  &challenge.ProvidedKeyAuthorization,
+		Error:             prob,
+		Validationrecords: recordAry,
 	}, nil
 }
 
@@ -106,12 +119,28 @@ func pbToChallenge(in *corepb.Challenge) (challenge core.Challenge, err error) {
 	if in.Id == nil || in.Type == nil || in.Status == nil || in.Token == nil || in.KeyAuthorization == nil {
 		return core.Challenge{}, ErrMissingParameters
 	}
+	var recordAry []core.ValidationRecord
+	if len(in.Validationrecords) > 0 {
+		recordAry = make([]core.ValidationRecord, len(in.Validationrecords))
+		for i, v := range in.Validationrecords {
+			recordAry[i], err = pbToValidationRecord(v)
+			if err != nil {
+				return core.Challenge{}, err
+			}
+		}
+	}
+	prob, err := pbToProblemDetails(in.Error)
+	if err != nil {
+		return core.Challenge{}, err
+	}
 	return core.Challenge{
 		ID:     *in.Id,
 		Type:   *in.Type,
 		Status: core.AcmeStatus(*in.Status),
 		Token:  *in.Token,
 		ProvidedKeyAuthorization: *in.KeyAuthorization,
+		Error:            prob,
+		ValidationRecord: recordAry,
 	}, nil
 }
 

grpc/pb-marshalling_test.go

@@ -114,6 +114,26 @@ func TestChallenge(t *testing.T) {
 	test.AssertNotError(t, err, "pbToChallenge failed")
 	test.AssertDeepEquals(t, recon, chall)
 
+	ip := net.ParseIP("1.1.1.1")
+	chall.ValidationRecord = []core.ValidationRecord{
+		core.ValidationRecord{
+			Hostname:          "host",
+			Port:              "2020",
+			AddressesResolved: []net.IP{ip},
+			AddressUsed:       ip,
+			URL:               "url",
+			Authorities:       []string{"auth"},
+		},
+	}
+	chall.Error = &probs.ProblemDetails{Type: probs.TLSProblem, Detail: "asd", HTTPStatus: 200}
+	pb, err = challengeToPB(chall)
+	test.AssertNotError(t, err, "challengeToPB failed")
+	test.Assert(t, pb != nil, "Returned corepb.Challenge is nil")
+
+	recon, err = pbToChallenge(pb)
+	test.AssertNotError(t, err, "pbToChallenge failed")
+	test.AssertDeepEquals(t, recon, chall)
+
 	_, err = pbToChallenge(nil)
 	test.AssertError(t, err, "pbToChallenge did not fail")
 	test.AssertEquals(t, err, ErrMissingParameters)