Removed unused file
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parent
1811f200c0
commit
39e5c84cf6
62
src/utils.go
62
src/utils.go
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@ -1,62 +0,0 @@
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package utils
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import (
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"encoding/json"
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"errors"
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"fmt"
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"io"
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"net/http"
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"strings"
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)
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type malformedRequest struct {
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status int
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msg string
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}
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func (mr *malformedRequest) Error() string {
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return mr.msg
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}
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// ValidateJSONBody validates a JSON request body to a destionation interface
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func ValidateJSONBody(req *http.Request, dst interface{}) error {
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dec := json.NewDecoder(req.Body)
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dec.DisallowUnknownFields()
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err := dec.Decode(&dst)
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if err != nil {
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var syntaxError *json.SyntaxError
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var unmarshalTypeError *json.UnmarshalTypeError
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if errors.As(err, &syntaxError) {
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msg := fmt.Sprintf("Request body contains badly-formed JSON (at position %d)", syntaxError.Offset)
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return &malformedRequest{status: http.StatusBadRequest, msg: msg}
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} else if errors.Is(err, io.ErrUnexpectedEOF) {
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msg := fmt.Sprintf("Request body contains badly-formed JSON")
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return &malformedRequest{status: http.StatusBadRequest, msg: msg}
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} else if errors.As(err, &unmarshalTypeError) {
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msg := fmt.Sprintf("Request body contains an invalid value for the %q field (at position %d)", unmarshalTypeError.Field, unmarshalTypeError.Offset)
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return &malformedRequest{status: http.StatusBadRequest, msg: msg}
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} else if strings.HasPrefix(err.Error(), "json: unknown field ") {
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fieldName := strings.TrimPrefix(err.Error(), "json: unknown field ")
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msg := fmt.Sprintf("Request body contains unknown field %s", fieldName)
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return &malformedRequest{status: http.StatusBadRequest, msg: msg}
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} else if errors.Is(err, io.EOF) {
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msg := "Request body must not be empty"
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return &malformedRequest{status: http.StatusBadRequest, msg: msg}
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} else if err.Error() == "http: request body too large" {
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msg := "Request body must not be larger than 1MB"
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return &malformedRequest{status: http.StatusRequestEntityTooLarge, msg: msg}
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} else {
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return err
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}
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}
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err = dec.Decode(&struct{}{})
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if err != io.EOF {
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msg := "Request body must only contain a single JSON object"
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return &malformedRequest{status: http.StatusBadRequest, msg: msg}
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}
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return nil
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}
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