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1cdc163276* add httpguts (ew) * add ValidateRequest err wrapping logic * don't retry on unrecoverable errors * i am very clever
63 lines
2.1 KiB
Go
63 lines
2.1 KiB
Go
/*
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GoToSocial
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Copyright (C) 2021-2022 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 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, func(r rune) bool { return !httpguts.IsTokenRune(r) }) != -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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