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-rw-r--r--trillian.go63
1 files changed, 59 insertions, 4 deletions
diff --git a/trillian.go b/trillian.go
index e5117da..147c5bd 100644
--- a/trillian.go
+++ b/trillian.go
@@ -5,28 +5,83 @@ import (
"net/http"
+ "github.com/golang/glog"
"github.com/google/trillian"
"github.com/google/trillian/types"
+ "google.golang.org/grpc/codes"
)
-// checkGetLeavesByRange does santity-checking on a Trillian response
-func checkGetLeavesByRange(rsp *trillian.GetLeavesByRangeResponse, req GetEntriesRequest) (int, error) {
+func checkQueueLeaf(rsp *trillian.QueueLeafResponse) (int, error) {
+ if codes.Code(rsp.QueuedLeaf.GetStatus().GetCode()) == codes.AlreadyExists {
+ // no need to report this as an invalid request, just (re)issue sdi
+ glog.V(3).Infof("queued leaf is a duplicate => %X", rsp.QueuedLeaf.Leaf.LeafValue)
+ } else {
+ glog.V(3).Infof("queued leaf => %X", rsp.QueuedLeaf.Leaf.LeafValue)
+ }
+ return 0, nil
+}
+
+func checkGetLeavesByRange(rsp *trillian.GetLeavesByRangeResponse, req *GetEntriesRequest) (int, error) {
if len(rsp.Leaves) > int(req.End-req.Start+1) {
return http.StatusInternalServerError, fmt.Errorf("backend GetLeavesByRange returned too many leaves: %d for [%d,%d]", len(rsp.Leaves), req.Start, req.End)
}
+ // Ensure that a bad start parameter results in an error
var lr types.LogRootV1
if err := lr.UnmarshalBinary(rsp.GetSignedLogRoot().GetLogRoot()); err != nil {
return http.StatusInternalServerError, fmt.Errorf("failed unmarshaling log root: %v", err)
}
if uint64(req.Start) >= lr.TreeSize {
- return http.StatusBadRequest, fmt.Errorf("invalid start(%d): tree size is %d", req.Start, lr.TreeSize)
+ return http.StatusNotFound, fmt.Errorf("invalid start(%d): tree size is %d", req.Start, lr.TreeSize)
}
+ // Ensure that we got and return expected leaf indices
for i, leaf := range rsp.Leaves {
if leaf.LeafIndex != req.Start+int64(i) {
- return http.StatusInternalServerError, fmt.Errorf("backend GetLeavesByRange returned unexpected leaf index: wanted %d, got %d", req.Start+int64(i), leaf.LeafIndex)
+ return http.StatusInternalServerError, fmt.Errorf("invalid leaf index: wanted %d, got %d", req.Start+int64(i), leaf.LeafIndex)
}
}
return 0, nil
}
+
+func checkGetInclusionProofByHash(rsp *trillian.GetInclusionProofByHashResponse, lp *LogParameters) (int, error) {
+ if rsp.Proof == nil || len(rsp.Proof) == 0 {
+ return http.StatusNotFound, fmt.Errorf("incomplete backend response")
+ } // maybe redundant, but better safe than sorry
+ return checkHashPath(lp.HashType.Size(), rsp.Proof[0].Hashes)
+}
+
+func checkGetConsistencyProofResponse(rsp *trillian.GetConsistencyProofResponse, lp *LogParameters) (int, error) {
+ if rsp.Proof == nil {
+ return http.StatusNotFound, fmt.Errorf("incomplete backend response")
+ } // not redundant, out-of-range parameters yield an empty proof w/o error
+ return checkHashPath(lp.HashType.Size(), rsp.Proof.Hashes)
+}
+
+func checkTrillianGetLatestSignedLogRoot(rsp *trillian.GetLatestSignedLogRootResponse, lp *LogParameters) (int, error) {
+ if rsp.SignedLogRoot == nil {
+ return http.StatusInternalServerError, fmt.Errorf("incomplete backend response")
+ } // maybe redundant
+
+ var lr types.LogRootV1
+ if err := lr.UnmarshalBinary(rsp.GetSignedLogRoot().GetLogRoot()); err != nil {
+ return http.StatusInternalServerError, fmt.Errorf("failed unmarshaling log root: %v", err)
+ }
+ if len(lr.RootHash) != lp.HashType.Size() {
+ return http.StatusInternalServerError, fmt.Errorf("invalid root hash: %v", lr.RootHash)
+ } // maybe redundant, but would not necessarily be caught by marshal error
+ return 0, nil
+}
+
+func checkHashPath(hashSize int, path [][]byte) (int, error) {
+ for _, hash := range path {
+ if len(hash) != hashSize {
+ return http.StatusInternalServerError, fmt.Errorf("invalid proof: %v", path)
+ }
+ } // maybe redundant, but would not necessarily be caught by marshal error
+ return 0, nil
+}
+
+func checkLogRoot(hashSize int, rootHash []byte) (int, error) {
+ return 0, nil
+}