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67 lines
2.2 KiB
67 lines
2.2 KiB
// 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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