125 lines
3.7 KiB
Go
125 lines
3.7 KiB
Go
/*
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GoToSocial
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Copyright (C) 2021 GoToSocial Authors admin@gotosocial.org
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU Affero General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Affero General Public License for more details.
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You should have received a copy of the GNU Affero General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package gtserror
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import (
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"errors"
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"net/http"
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"strings"
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)
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// WithCode wraps an internal error with an http code, and a 'safe' version of
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// the error that can be served to clients without revealing internal business logic.
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//
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// A typical use of this error would be to first log the Original error, then return
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// the Safe error and the StatusCode to an API caller.
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type WithCode interface {
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// Error returns the original internal error for debugging within the GoToSocial logs.
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// This should *NEVER* be returned to a client as it may contain sensitive information.
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Error() string
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// Safe returns the API-safe version of the error for serialization towards a client.
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// There's not much point logging this internally because it won't contain much helpful information.
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Safe() string
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// Code returns the status code for serving to a client.
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Code() int
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}
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type withCode struct {
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original error
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safe error
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code int
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}
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func (e withCode) Error() string {
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return e.original.Error()
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}
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func (e withCode) Safe() string {
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return e.safe.Error()
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}
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func (e withCode) Code() int {
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return e.code
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}
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// NewErrorBadRequest returns an ErrorWithCode 400 with the given original error and optional help text.
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func NewErrorBadRequest(original error, helpText ...string) WithCode {
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safe := "bad request"
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if helpText != nil {
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safe = safe + ": " + strings.Join(helpText, ": ")
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}
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return withCode{
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original: original,
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safe: errors.New(safe),
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code: http.StatusBadRequest,
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}
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}
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// NewErrorNotAuthorized returns an ErrorWithCode 401 with the given original error and optional help text.
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func NewErrorNotAuthorized(original error, helpText ...string) WithCode {
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safe := "not authorized"
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if helpText != nil {
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safe = safe + ": " + strings.Join(helpText, ": ")
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}
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return withCode{
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original: original,
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safe: errors.New(safe),
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code: http.StatusUnauthorized,
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}
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}
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// NewErrorForbidden returns an ErrorWithCode 403 with the given original error and optional help text.
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func NewErrorForbidden(original error, helpText ...string) WithCode {
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safe := "forbidden"
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if helpText != nil {
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safe = safe + ": " + strings.Join(helpText, ": ")
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}
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return withCode{
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original: original,
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safe: errors.New(safe),
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code: http.StatusForbidden,
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}
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}
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// NewErrorNotFound returns an ErrorWithCode 404 with the given original error and optional help text.
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func NewErrorNotFound(original error, helpText ...string) WithCode {
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safe := "404 not found"
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if helpText != nil {
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safe = safe + ": " + strings.Join(helpText, ": ")
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}
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return withCode{
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original: original,
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safe: errors.New(safe),
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code: http.StatusNotFound,
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}
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}
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// NewErrorInternalError returns an ErrorWithCode 500 with the given original error and optional help text.
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func NewErrorInternalError(original error, helpText ...string) WithCode {
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safe := "internal server error"
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if helpText != nil {
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safe = safe + ": " + strings.Join(helpText, ": ")
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}
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return withCode{
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original: original,
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safe: errors.New(safe),
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code: http.StatusInternalServerError,
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}
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}
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