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      1 //
      2 // Copyright (C) 2015 The Android Open Source Project
      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 //      http://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 DHCP_CLIENT_PARSER_H_
     18 #define DHCP_CLIENT_PARSER_H_
     19 
     20 #include <cstdint>
     21 
     22 namespace dhcp_client {
     23 
     24 class DHCPOptionsParser {
     25  public:
     26   virtual bool GetOption(const uint8_t* buffer,
     27                          uint8_t length,
     28                          void* value) = 0;
     29   virtual ~DHCPOptionsParser() {}
     30 };
     31 
     32 class UInt8Parser : public DHCPOptionsParser {
     33  public:
     34   UInt8Parser() {}
     35   bool GetOption(const uint8_t* buffer,
     36                  uint8_t length,
     37                  void* value) override;
     38 };
     39 
     40 class UInt16Parser : public DHCPOptionsParser {
     41  public:
     42   UInt16Parser() {}
     43   bool GetOption(const uint8_t* buffer,
     44                  uint8_t length,
     45                  void* value) override;
     46 };
     47 
     48 class UInt32Parser : public DHCPOptionsParser {
     49  public:
     50   UInt32Parser() {}
     51   bool GetOption(const uint8_t* buffer,
     52                  uint8_t length,
     53                  void* value) override;
     54 };
     55 
     56 class UInt8ListParser : public DHCPOptionsParser {
     57  public:
     58   UInt8ListParser() {}
     59   bool GetOption(const uint8_t* buffer,
     60                  uint8_t length,
     61                  void* value) override;
     62 };
     63 
     64 class UInt16ListParser : public DHCPOptionsParser {
     65  public:
     66   UInt16ListParser() {}
     67   bool GetOption(const uint8_t* buffer,
     68                  uint8_t length,
     69                  void* value) override;
     70 };
     71 
     72 class UInt32ListParser : public DHCPOptionsParser {
     73  public:
     74   UInt32ListParser() {}
     75   bool GetOption(const uint8_t* buffer,
     76                  uint8_t length,
     77                  void* value) override;
     78 };
     79 
     80 class UInt32PairListParser : public DHCPOptionsParser {
     81  public:
     82   UInt32PairListParser() {}
     83   bool GetOption(const uint8_t* buffer,
     84                  uint8_t length,
     85                  void* value) override;
     86 };
     87 
     88 class BoolParser : public DHCPOptionsParser {
     89  public:
     90   BoolParser() {}
     91   bool GetOption(const uint8_t* buffer,
     92                  uint8_t length,
     93                  void* value) override;
     94 };
     95 
     96 class StringParser : public DHCPOptionsParser {
     97  public:
     98   StringParser() {}
     99   bool GetOption(const uint8_t* buffer,
    100                  uint8_t length,
    101                  void* value) override;
    102 };
    103 
    104 class ByteArrayParser : public DHCPOptionsParser {
    105  public:
    106   bool GetOption(const uint8_t* buffer,
    107                  uint8_t length,
    108                  void* value) override;
    109 };
    110 }  // namespace dhcp_client
    111 
    112 #endif  // DHCP_CLIENT_PARSER_H_
    113