open-vault/logical/response_util.go
2017-02-16 15:15:02 -05:00

112 lines
3.3 KiB
Go

package logical
import (
"errors"
"fmt"
"net/http"
"github.com/hashicorp/errwrap"
multierror "github.com/hashicorp/go-multierror"
"github.com/hashicorp/vault/helper/consts"
)
// RespondErrorCommon pulls most of the functionality from http's
// respondErrorCommon and some of http's handleLogical and makes it available
// to both the http package and elsewhere.
func RespondErrorCommon(req *Request, resp *Response, err error) (int, error) {
if err == nil && (resp == nil || !resp.IsError()) {
switch {
case req.Operation == ReadOperation:
if resp == nil {
return http.StatusNotFound, nil
}
// Basically: if we have empty "keys" or no keys at all, 404. This
// provides consistency with GET.
case req.Operation == ListOperation && resp.WrapInfo == nil:
if resp == nil || len(resp.Data) == 0 {
return http.StatusNotFound, nil
}
keysRaw, ok := resp.Data["keys"]
if !ok || keysRaw == nil {
return http.StatusNotFound, nil
}
keys, ok := keysRaw.([]string)
if !ok {
return http.StatusInternalServerError, nil
}
if len(keys) == 0 {
return http.StatusNotFound, nil
}
}
return 0, nil
}
if errwrap.ContainsType(err, new(ReplicationCodedError)) {
var allErrors error
codedErr := errwrap.GetType(err, new(ReplicationCodedError)).(*ReplicationCodedError)
errwrap.Walk(err, func(inErr error) {
newErr, ok := inErr.(*ReplicationCodedError)
if !ok {
allErrors = multierror.Append(allErrors, newErr)
}
})
if allErrors != nil {
return codedErr.Code, multierror.Append(errors.New(fmt.Sprintf("errors from both primary and secondary; primary error was %v; secondary errors follow", codedErr.Msg)), allErrors)
}
return codedErr.Code, errors.New(codedErr.Msg)
}
// Start out with internal server error since in most of these cases there
// won't be a response so this won't be overridden
statusCode := http.StatusInternalServerError
// If we actually have a response, start out with bad request
if resp != nil {
statusCode = http.StatusBadRequest
}
// Now, check the error itself; if it has a specific logical error, set the
// appropriate code
if err != nil {
switch {
case errwrap.ContainsType(err, new(StatusBadRequest)):
statusCode = http.StatusBadRequest
case errwrap.Contains(err, ErrPermissionDenied.Error()):
statusCode = http.StatusForbidden
case errwrap.Contains(err, ErrUnsupportedOperation.Error()):
statusCode = http.StatusMethodNotAllowed
case errwrap.Contains(err, ErrUnsupportedPath.Error()):
statusCode = http.StatusNotFound
case errwrap.Contains(err, ErrInvalidRequest.Error()):
statusCode = http.StatusBadRequest
}
}
if resp != nil && resp.IsError() {
err = fmt.Errorf("%s", resp.Data["error"].(string))
}
return statusCode, err
}
// AdjustErrorStatusCode adjusts the status that will be sent in error
// conditions in a way that can be shared across http's respondError and other
// locations.
func AdjustErrorStatusCode(status *int, err error) {
// Adjust status code when sealed
if errwrap.Contains(err, consts.ErrSealed.Error()) {
*status = http.StatusServiceUnavailable
}
// Adjust status code on
if errwrap.Contains(err, "http: request body too large") {
*status = http.StatusRequestEntityTooLarge
}
// Allow HTTPCoded error passthrough to specify a code
if t, ok := err.(HTTPCodedError); ok {
*status = t.Code()
}
}