| // Copyright 2022 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef QUICHE_BALSA_HEADER_PROPERTIES_H_ |
| #define QUICHE_BALSA_HEADER_PROPERTIES_H_ |
| |
| #include <cstdint> |
| |
| #include "absl/strings/string_view.h" |
| #include "quiche/common/platform/api/quiche_export.h" |
| |
| namespace quiche::header_properties { |
| |
| // Returns true if RFC 2616 Section 14 (or other relevant standards or |
| // practices) indicates that header can have multiple values. Note that nothing |
| // stops clients from sending multiple values of other headers, so this may not |
| // be perfectly reliable in practice. |
| QUICHE_EXPORT_PRIVATE bool IsMultivaluedHeader(absl::string_view header); |
| |
| // An array of characters that are invalid in HTTP header field names. |
| // These are control characters, including \t, \n, \r, as well as space and |
| // (),/;<=>?@[\]{} and \x7f (see |
| // https://tools.ietf.org/html/rfc7230#section-3.2.6). |
| inline constexpr char kInvalidHeaderKeyCharList[] = { |
| 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, |
| 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x10, 0x11, 0x12, 0x13, |
| 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, |
| 0x1E, 0x1F, ' ', '(', ')', ',', '/', ';', '<', '=', |
| '>', '?', '@', '[', '\\', ']', '{', '}', 0x7f}; |
| |
| // An array of characters that are invalid in HTTP header field values, |
| // according to RFC 7230 Section 3.2. Valid low characters not in this array |
| // are \t (0x09), \n (0x0A), and \r (0x0D). |
| // Note that HTTP header field names are even more restrictive. |
| inline constexpr char kInvalidHeaderCharList[] = { |
| 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x0B, |
| 0x0C, 0x0E, 0x0F, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, |
| 0x17, 0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F, 0x7F}; |
| |
| // Returns true if the given `c` is invalid in a header field name. |
| QUICHE_EXPORT_PRIVATE bool IsInvalidHeaderKeyChar(uint8_t c); |
| // Returns true if the given `c` is invalid in a header field or the `value` has |
| // invalid characters. |
| QUICHE_EXPORT_PRIVATE bool IsInvalidHeaderChar(uint8_t c); |
| QUICHE_EXPORT_PRIVATE bool HasInvalidHeaderChars(absl::string_view value); |
| |
| } // namespace quiche::header_properties |
| |
| #endif // QUICHE_BALSA_HEADER_PROPERTIES_H_ |