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|
package stfe
import (
"context"
"crypto/ed25519"
"fmt"
"net/http"
"strings"
"github.com/golang/glog"
"github.com/google/trillian"
"github.com/system-transparency/stfe/types"
)
// Endpoint is a named HTTP API endpoint
type Endpoint string
const (
EndpointAddEntry = Endpoint("add-leaf")
EndpointAddCosignature = Endpoint("add-cosignature")
EndpointGetLatestSth = Endpoint("get-tree-head-latest")
EndpointGetStableSth = Endpoint("get-tree-head-to-sign")
EndpointGetCosignedSth = Endpoint("get-tree-head-cosigned")
EndpointGetProofByHash = Endpoint("get-proof-by-hash")
EndpointGetConsistencyProof = Endpoint("get-consistency-proof")
EndpointGetEntries = Endpoint("get-leaves")
)
// Path joins a number of components to form a full endpoint path, e.g., base
// ("example.com"), prefix ("st/v1"), and the endpoint itself ("get-sth").
func (e Endpoint) Path(components ...string) string {
return strings.Join(append(components, string(e)), "/")
}
func addEntry(ctx context.Context, i *Instance, w http.ResponseWriter, r *http.Request) (int, error) {
glog.V(3).Info("handling add-entry request")
leaf, err := i.LogParameters.parseAddEntryV1Request(r)
if err != nil {
return http.StatusBadRequest, fmt.Errorf("parseAddEntryV1Request: %v", err)
}
trsp, err := i.Client.QueueLeaf(ctx, &trillian.QueueLeafRequest{
LogId: i.LogParameters.TreeId,
Leaf: &trillian.LogLeaf{
LeafValue: leaf.Marshal(),
ExtraData: nil,
},
})
if errInner := checkQueueLeaf(trsp, err); errInner != nil {
return http.StatusInternalServerError, fmt.Errorf("bad QueueLeafResponse: %v", errInner)
}
return http.StatusOK, nil
}
func addCosignature(ctx context.Context, i *Instance, w http.ResponseWriter, r *http.Request) (int, error) {
glog.V(3).Info("handling add-cosignature request")
req, err := i.LogParameters.parseAddCosignatureRequest(r)
if err != nil {
return http.StatusBadRequest, fmt.Errorf("parseAddCosignatureRequest: %v", err)
}
vk := i.LogParameters.Witnesses[*req.KeyHash]
if err := i.SthSource.AddCosignature(ctx, ed25519.PublicKey(vk[:]), req.Signature); err != nil {
return http.StatusBadRequest, fmt.Errorf("AddCosignature: %v", err)
}
return http.StatusOK, nil
}
func getLatestSth(ctx context.Context, i *Instance, w http.ResponseWriter, _ *http.Request) (int, error) {
glog.V(3).Info("handling get-latest-sth request")
sth, err := i.SthSource.Latest(ctx)
if err != nil {
return http.StatusInternalServerError, fmt.Errorf("Latest: %v", err)
}
if err := sth.MarshalASCII(w); err != nil {
return http.StatusInternalServerError, fmt.Errorf("MarshalASCII: %v", err)
}
return http.StatusOK, nil
}
func getStableSth(ctx context.Context, i *Instance, w http.ResponseWriter, _ *http.Request) (int, error) {
glog.V(3).Info("handling get-stable-sth request")
sth, err := i.SthSource.Stable(ctx)
if err != nil {
return http.StatusInternalServerError, fmt.Errorf("Latest: %v", err)
}
if err := sth.MarshalASCII(w); err != nil {
return http.StatusInternalServerError, fmt.Errorf("MarshalASCII: %v", err)
}
return http.StatusOK, nil
}
func getCosignedSth(ctx context.Context, i *Instance, w http.ResponseWriter, _ *http.Request) (int, error) {
glog.V(3).Info("handling get-cosigned-sth request")
sth, err := i.SthSource.Cosigned(ctx)
if err != nil {
return http.StatusInternalServerError, fmt.Errorf("Cosigned: %v", err)
}
if err := sth.MarshalASCII(w); err != nil {
return http.StatusInternalServerError, fmt.Errorf("MarshalASCII: %v", err)
}
return http.StatusOK, nil
}
func getConsistencyProof(ctx context.Context, i *Instance, w http.ResponseWriter, r *http.Request) (int, error) {
glog.V(3).Info("handling get-consistency-proof request")
req, err := i.LogParameters.parseGetConsistencyProofRequest(r)
if err != nil {
return http.StatusBadRequest, err
}
trsp, err := i.Client.GetConsistencyProof(ctx, &trillian.GetConsistencyProofRequest{
LogId: i.LogParameters.TreeId,
FirstTreeSize: int64(req.OldSize),
SecondTreeSize: int64(req.NewSize),
})
if errInner := checkGetConsistencyProof(i.LogParameters, trsp, err); errInner != nil {
return http.StatusInternalServerError, fmt.Errorf("bad GetConsistencyProofResponse: %v", errInner)
}
proof := &types.ConsistencyProof{
NewSize: req.NewSize,
OldSize: req.OldSize,
Path: NodePathFromHashes(trsp.Proof.Hashes),
}
if err := proof.MarshalASCII(w); err != nil {
return http.StatusInternalServerError, fmt.Errorf("MarshalASCII: %v", err)
}
return http.StatusOK, nil
}
func getProofByHash(ctx context.Context, i *Instance, w http.ResponseWriter, r *http.Request) (int, error) {
glog.V(3).Info("handling get-proof-by-hash request")
req, err := i.LogParameters.parseGetProofByHashRequest(r)
if err != nil {
return http.StatusBadRequest, err
}
trsp, err := i.Client.GetInclusionProofByHash(ctx, &trillian.GetInclusionProofByHashRequest{
LogId: i.LogParameters.TreeId,
LeafHash: req.LeafHash[:],
TreeSize: int64(req.TreeSize),
OrderBySequence: true,
})
if errInner := checkGetInclusionProofByHash(i.LogParameters, trsp, err); errInner != nil {
return http.StatusInternalServerError, fmt.Errorf("bad GetInclusionProofByHashResponse: %v", errInner)
}
proof := &types.InclusionProof{
TreeSize: req.TreeSize,
LeafIndex: uint64(trsp.Proof[0].LeafIndex),
Path: NodePathFromHashes(trsp.Proof[0].Hashes),
}
if err := proof.MarshalASCII(w); err != nil {
return http.StatusInternalServerError, fmt.Errorf("MarshalASCII: %v", err)
}
return http.StatusOK, nil
}
func getEntries(ctx context.Context, i *Instance, w http.ResponseWriter, r *http.Request) (int, error) {
glog.V(3).Info("handling get-entries request")
req, err := i.LogParameters.parseGetEntriesRequest(r)
if err != nil {
return http.StatusBadRequest, err
}
trsp, err := i.Client.GetLeavesByRange(ctx, &trillian.GetLeavesByRangeRequest{
LogId: i.LogParameters.TreeId,
StartIndex: int64(req.StartSize),
Count: int64(req.EndSize-req.StartSize) + 1,
})
if errInner := checkGetLeavesByRange(req, trsp, err); errInner != nil {
return http.StatusInternalServerError, fmt.Errorf("checkGetLeavesByRangeResponse: %v", errInner) // there is one StatusBadRequest in here tho..
}
for _, serialized := range trsp.Leaves {
var leaf types.Leaf
if err := leaf.Unmarshal(serialized.LeafValue); err != nil {
return http.StatusInternalServerError, fmt.Errorf("Unmarshal: %v", err)
}
if err := leaf.MarshalASCII(w); err != nil {
return http.StatusInternalServerError, fmt.Errorf("MarshalASCII: %v", err)
}
}
return http.StatusOK, nil
}
|
