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c4c8bfd027
* reject invalid UTF-8 Signed-off-by: Jonas Fentker <jonas@fentker.eu> * update sytest-whitelist Signed-off-by: Jonas Fentker <jonas@fentker.eu> Co-authored-by: Kegsay <kegan@matrix.org>
57 lines
1.9 KiB
Go
57 lines
1.9 KiB
Go
// Copyright 2017 Vector Creations Ltd
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package httputil
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import (
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"encoding/json"
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"io/ioutil"
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"net/http"
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"unicode/utf8"
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"github.com/matrix-org/dendrite/clientapi/jsonerror"
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"github.com/matrix-org/util"
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)
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// UnmarshalJSONRequest into the given interface pointer. Returns an error JSON response if
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// there was a problem unmarshalling. Calling this function consumes the request body.
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func UnmarshalJSONRequest(req *http.Request, iface interface{}) *util.JSONResponse {
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// encoding/json allows invalid utf-8, matrix does not
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// https://matrix.org/docs/spec/client_server/r0.6.1#api-standards
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body, err := ioutil.ReadAll(req.Body)
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if err != nil {
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util.GetLogger(req.Context()).WithError(err).Error("ioutil.ReadAll failed")
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resp := jsonerror.InternalServerError()
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return &resp
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}
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if !utf8.Valid(body) {
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return &util.JSONResponse{
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Code: http.StatusBadRequest,
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JSON: jsonerror.NotJSON("Body contains invalid UTF-8"),
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}
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}
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if err := json.Unmarshal(body, iface); err != nil {
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// TODO: We may want to suppress the Error() return in production? It's useful when
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// debugging because an error will be produced for both invalid/malformed JSON AND
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// valid JSON with incorrect types for values.
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return &util.JSONResponse{
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Code: http.StatusBadRequest,
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JSON: jsonerror.BadJSON("The request body could not be decoded into valid JSON. " + err.Error()),
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}
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}
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return nil
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}
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