mDNSMacOSX/mdns_objects/mdns_tlv.h

   1 /*
   2  * Copyright (c) 2020 Apple Inc. All rights reserved.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *     https://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 #ifndef __MDNS_TLV_H__
  18 #define __MDNS_TLV_H__
  19
  20 #include "mdns_base.h"
  21
  22 #include <MacTypes.h>
  23 #include <stdint.h>
  24
  25 MDNS_ASSUME_NONNULL_BEGIN
  26
  27 __BEGIN_DECLS
  28
  29 OSStatus
  30 mdns_tlv16_get_value(const uint8_t *start, const uint8_t *end, uint16_t type, size_t *out_length,
  31         const uint8_t * _Nonnull * _Nullable out_value, const uint8_t * _Nonnull * _Nullable out_ptr);
  32
  33 OSStatus
  34 mdns_tlv16_set(uint8_t *dst, const uint8_t *limit, uint16_t type, uint16_t length, const uint8_t *value,
  35         uint8_t * _Nonnull * _Nullable out_end);
  36
  37 size_t
  38 mdns_tlv16_get_required_length(const uint16_t value_length);
  39
  40 __END_DECLS
  41
  42 MDNS_ASSUME_NONNULL_END
  43
  44 #endif  // __MDNS_TLV_H__