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Bug where result was written after error regardless of if there was one or not (#54)

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* Fix bug where result was sent back aswell as error

* Bumps version
This commit is contained in:
Steven Jack 2018-03-25 11:13:47 +01:00 committed by Anthony De Meulemeester
parent 19a430b262
commit ad9333c74c
2 changed files with 22 additions and 6 deletions
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2
VERSION
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@ -1 +1 @@
0.33.0
0.33.1

22
pkg/rpc/server.go
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@ -22,6 +22,12 @@ type (
}
)
var (
invalidBlockHeightError = func(index int, height int) error {
return fmt.Errorf("Param at index %d should be greater than or equal to 0 and less then or equal to current block height, got: %d", index, height)
}
)
// NewServer creates a new Server struct.
func NewServer(chain core.Blockchainer, port uint16, coreServer *network.Server) Server {
return Server{
@ -90,6 +96,7 @@ func (s *Server) methodHandler(w http.ResponseWriter, req *Request, reqParams Pa
var results interface{}
var resultsErr *Error
Methods:
switch req.Method {
case "getbestblockhash":
results = s.chain.CurrentBlockHash().String()
@ -113,6 +120,12 @@ func (s *Server) methodHandler(w http.ResponseWriter, req *Request, reqParams Pa
break
}
case "number":
if !s.validBlockHeight(param) {
err = invalidBlockHeightError(0, param.IntVal)
resultsErr = NewInvalidParamsError(err.Error(), err)
break Methods
}
hash = s.chain.GetHeaderHash(param.IntVal)
case "default":
err = errors.New("Expected param at index 0 to be either string or number")
@ -130,10 +143,10 @@ func (s *Server) methodHandler(w http.ResponseWriter, req *Request, reqParams Pa
results = s.chain.BlockHeight()
case "getblockhash":
if param, exists := reqParams.ValueAtAndType(0, "number"); exists {
if param, exists := reqParams.ValueAtAndType(0, "number"); exists && s.validBlockHeight(param) {
results = s.chain.GetHeaderHash(param.IntVal)
} else {
err := errors.New("Unable to parse parameter in position 0, expected a number")
err := invalidBlockHeightError(0, param.IntVal)
resultsErr = NewInvalidParamsError(err.Error(), err)
break
}
@ -173,9 +186,12 @@ func (s *Server) methodHandler(w http.ResponseWriter, req *Request, reqParams Pa
if resultsErr != nil {
req.WriteErrorResponse(w, resultsErr)
return
}
if results != nil {
req.WriteResponse(w, results)
}
func (s Server) validBlockHeight(param *Param) bool {
return param.IntVal >= 0 && param.IntVal <= int(s.chain.BlockHeight())
}