68 lines
2.2 KiB
Go
68 lines
2.2 KiB
Go
// GoToSocial
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// Copyright (C) GoToSocial Authors admin@gotosocial.org
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// SPDX-License-Identifier: AGPL-3.0-or-later
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//
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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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//
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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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//
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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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package httpclient
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import (
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"fmt"
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"net/http"
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"strings"
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"golang.org/x/net/http/httpguts"
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)
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// ValidateRequest performs the same request validation logic found in the default
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// net/http.Transport{}.roundTrip() function, but pulls it out into this separate
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// function allowing validation errors to be wrapped under a single error type.
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func ValidateRequest(r *http.Request) error {
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switch {
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case r.URL == nil:
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return fmt.Errorf("%w: nil url", ErrInvalidRequest)
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case r.Header == nil:
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return fmt.Errorf("%w: nil header", ErrInvalidRequest)
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case r.URL.Host == "":
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return fmt.Errorf("%w: empty url host", ErrInvalidRequest)
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case r.URL.Scheme != "http" && r.URL.Scheme != "https":
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return fmt.Errorf("%w: unsupported protocol %q", ErrInvalidRequest, r.URL.Scheme)
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case strings.IndexFunc(r.Method, isNotTokenRune) != -1:
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return fmt.Errorf("%w: invalid method %q", ErrInvalidRequest, r.Method)
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}
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for key, values := range r.Header {
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// Check field key name is valid
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if !httpguts.ValidHeaderFieldName(key) {
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return fmt.Errorf("%w: invalid header field name %q", ErrInvalidRequest, key)
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}
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// Check each field value is valid
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for i := 0; i < len(values); i++ {
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if !httpguts.ValidHeaderFieldValue(values[i]) {
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return fmt.Errorf("%w: invalid header field value %q", ErrInvalidRequest, values[i])
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}
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}
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}
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// ps. kim wrote this
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return nil
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}
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// isNotTokenRune wraps IsTokenRune to inverse result.
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func isNotTokenRune(r rune) bool {
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return !httpguts.IsTokenRune(r)
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}
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