gotosocial/internal/httpclient/validate.go
kim 2063d01cdb
[bugfix] Add back removed ValidateRequest() before backoff-retry loop (#1805)
* add back removed ValidateRequest() before backoff-retry loop

Signed-off-by: kim <grufwub@gmail.com>

* include response body in error response log

Signed-off-by: kim <grufwub@gmail.com>

* improved error response body draining

Signed-off-by: kim <grufwub@gmail.com>

* add more code commenting

Signed-off-by: kim <grufwub@gmail.com>

* move new error response logic to gtserror, handle instead in transport.Transport{} impl

Signed-off-by: kim <grufwub@gmail.com>

* appease ye oh mighty linter

Signed-off-by: kim <grufwub@gmail.com>

* fix mockhttpclient not setting request in http response

Signed-off-by: kim <grufwub@gmail.com>

---------

Signed-off-by: kim <grufwub@gmail.com>
2023-05-21 18:59:14 +02:00

62 lines
2.2 KiB
Go

// GoToSocial
// Copyright (C) GoToSocial Authors admin@gotosocial.org
// SPDX-License-Identifier: AGPL-3.0-or-later
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package httpclient
import (
"fmt"
"net/http"
"strings"
"golang.org/x/net/http/httpguts"
)
// ValidateRequest performs the same request validation logic found in the default
// net/http.Transport{}.roundTrip() function, but pulls it out into this separate
// function allowing validation errors to be wrapped under a single error type.
func ValidateRequest(r *http.Request) error {
switch {
case r.URL == nil:
return fmt.Errorf("%w: nil url", ErrInvalidRequest)
case r.Header == nil:
return fmt.Errorf("%w: nil header", ErrInvalidRequest)
case r.URL.Host == "":
return fmt.Errorf("%w: empty url host", ErrInvalidRequest)
case r.URL.Scheme != "http" && r.URL.Scheme != "https":
return fmt.Errorf("%w: unsupported protocol %q", ErrInvalidRequest, r.URL.Scheme)
case strings.IndexFunc(r.Method, func(r rune) bool { return !httpguts.IsTokenRune(r) }) != -1:
return fmt.Errorf("%w: invalid method %q", ErrInvalidRequest, r.Method)
}
for key, values := range r.Header {
// Check field key name is valid
if !httpguts.ValidHeaderFieldName(key) {
return fmt.Errorf("%w: invalid header field name %q", ErrInvalidRequest, key)
}
// Check each field value is valid
for i := 0; i < len(values); i++ {
if !httpguts.ValidHeaderFieldValue(values[i]) {
return fmt.Errorf("%w: invalid header field value %q", ErrInvalidRequest, values[i])
}
}
}
// ps. kim wrote this
return nil
}