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-rw-r--r--rpc/http.go85
1 files changed, 52 insertions, 33 deletions
diff --git a/rpc/http.go b/rpc/http.go
index 8dcd55ad1..971032d71 100644
--- a/rpc/http.go
+++ b/rpc/http.go
@@ -1,6 +1,8 @@
package rpc
import (
+ "encoding/json"
+ "io/ioutil"
"net/http"
"github.com/ethereum/go-ethereum/logger"
@@ -16,54 +18,71 @@ const (
// JSONRPC returns a handler that implements the Ethereum JSON-RPC API.
func JSONRPC(pipe *xeth.XEth, dataDir string) http.Handler {
- var json JsonWrapper
+ var jsw JsonWrapper
api := NewEthereumApi(pipe, dataDir)
return http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
+ // TODO this needs to be configurable
w.Header().Set("Access-Control-Allow-Origin", "*")
- rpchttplogger.DebugDetailln("Handling request")
-
+ // Limit request size to resist DoS
if req.ContentLength > maxSizeReqLength {
jsonerr := &RpcErrorObject{-32700, "Request too large"}
- json.Send(w, &RpcErrorResponse{JsonRpc: jsonrpcver, ID: nil, Error: jsonerr})
+ jsw.Send(w, &RpcErrorResponse{JsonRpc: jsonrpcver, ID: nil, Error: jsonerr})
return
}
- reqParsed, reqerr := json.ParseRequestBody(req)
- switch reqerr.(type) {
- case nil:
- break
- case *DecodeParamError, *InsufficientParamsError, *ValidationError:
- jsonerr := &RpcErrorObject{-32602, reqerr.Error()}
- json.Send(w, &RpcErrorResponse{JsonRpc: jsonrpcver, ID: nil, Error: jsonerr})
- return
- default:
- jsonerr := &RpcErrorObject{-32700, "Could not parse request"}
- json.Send(w, &RpcErrorResponse{JsonRpc: jsonrpcver, ID: nil, Error: jsonerr})
- return
+ defer req.Body.Close()
+ body, err := ioutil.ReadAll(req.Body)
+ if err != nil {
+ jsonerr := &RpcErrorObject{-32700, "Could not read request body"}
+ jsw.Send(w, &RpcErrorResponse{JsonRpc: jsonrpcver, ID: nil, Error: jsonerr})
}
- var response interface{}
- reserr := api.GetRequestReply(&reqParsed, &response)
- switch reserr.(type) {
- case nil:
- break
- case *NotImplementedError:
- jsonerr := &RpcErrorObject{-32601, reserr.Error()}
- json.Send(w, &RpcErrorResponse{JsonRpc: jsonrpcver, ID: reqParsed.ID, Error: jsonerr})
+ // Try to parse the request as a single
+ var reqSingle RpcRequest
+ if err := json.Unmarshal(body, &reqSingle); err == nil {
+ response := RpcResponse(api, &reqSingle)
+ jsw.Send(w, &response)
return
- case *DecodeParamError, *InsufficientParamsError, *ValidationError:
- jsonerr := &RpcErrorObject{-32602, reserr.Error()}
- json.Send(w, &RpcErrorResponse{JsonRpc: jsonrpcver, ID: reqParsed.ID, Error: jsonerr})
- return
- default:
- jsonerr := &RpcErrorObject{-32603, reserr.Error()}
- json.Send(w, &RpcErrorResponse{JsonRpc: jsonrpcver, ID: reqParsed.ID, Error: jsonerr})
+ }
+
+ // Try to parse the request to batch
+ var reqBatch []RpcRequest
+ if err := json.Unmarshal(body, &reqBatch); err == nil {
+ // Build response batch
+ resBatch := make([]*interface{}, len(reqBatch))
+ for i, request := range reqBatch {
+ response := RpcResponse(api, &request)
+ resBatch[i] = response
+ }
+ jsw.Send(w, resBatch)
return
}
- rpchttplogger.DebugDetailf("Generated response: %T %s", response, response)
- json.Send(w, &RpcSuccessResponse{JsonRpc: jsonrpcver, ID: reqParsed.ID, Result: response})
+ // Not a batch or single request, error
+ jsonerr := &RpcErrorObject{-32600, "Could not decode request"}
+ jsw.Send(w, &RpcErrorResponse{JsonRpc: jsonrpcver, ID: nil, Error: jsonerr})
})
}
+
+func RpcResponse(api *EthereumApi, request *RpcRequest) *interface{} {
+ var reply, response interface{}
+ reserr := api.GetRequestReply(request, &reply)
+ switch reserr.(type) {
+ case nil:
+ response = &RpcSuccessResponse{JsonRpc: jsonrpcver, ID: request.ID, Result: reply}
+ case *NotImplementedError:
+ jsonerr := &RpcErrorObject{-32601, reserr.Error()}
+ response = &RpcErrorResponse{JsonRpc: jsonrpcver, ID: request.ID, Error: jsonerr}
+ case *DecodeParamError, *InsufficientParamsError, *ValidationError:
+ jsonerr := &RpcErrorObject{-32602, reserr.Error()}
+ response = &RpcErrorResponse{JsonRpc: jsonrpcver, ID: request.ID, Error: jsonerr}
+ default:
+ jsonerr := &RpcErrorObject{-32603, reserr.Error()}
+ response = &RpcErrorResponse{JsonRpc: jsonrpcver, ID: request.ID, Error: jsonerr}
+ }
+
+ rpchttplogger.DebugDetailf("Generated response: %T %s", response, response)
+ return &response
+}