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//
// Copyright (c) SAS Institute Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
package server
import (
"context"
"encoding/json"
"errors"
"net/http"
"github.com/sassoftware/relic/v7/internal/httperror"
"github.com/sassoftware/relic/v7/internal/zhttp"
"github.com/sassoftware/relic/v7/signers/sigerrors"
"github.com/sassoftware/relic/v7/token"
)
func handleFunc(f func(http.ResponseWriter, *http.Request) error) http.HandlerFunc {
return func(rw http.ResponseWriter, req *http.Request) {
ctx := req.Context()
if srv, ok := ctx.Value(http.ServerContextKey).(*http.Server); ok && srv.WriteTimeout > 0 {
// timeout request context when WriteTimeout is reached
ctx, cancel := context.WithTimeout(req.Context(), srv.WriteTimeout)
defer cancel()
req = req.WithContext(ctx)
}
err := f(rw, req)
if err == nil {
return
}
if resp, ok := err.(http.Handler); ok {
resp.ServeHTTP(rw, req)
} else if h := errToProblem(err); h != nil {
h.ServeHTTP(rw, req)
} else {
zhttp.WriteUnhandledError(rw, req, err, "")
}
}
}
func errToProblem(err error) http.Handler {
if e := new(token.KeyUsageError); errors.As(err, e) {
return httperror.Problem{
Status: http.StatusBadRequest,
Type: httperror.ProblemKeyUsage,
Title: "Incorrect Key Usage",
Detail: e.Error(),
}
} else if e := new(sigerrors.ErrNoCertificate); errors.As(err, e) {
return httperror.NoCertificateError(e.Type)
}
return nil
}
func writeJSON(rw http.ResponseWriter, data interface{}) error {
blob, err := json.Marshal(data)
if err != nil {
return err
}
rw.Header().Set("Content-Type", "application/json")
_, err = rw.Write(blob)
return err
}
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