Line data    Source code

       1             : /* Copyright (C) 2017 Wildfire Games.
       2             :  * This file is part of 0 A.D.
       3             :  *
       4             :  * 0 A.D. is free software: you can redistribute it and/or modify
       5             :  * it under the terms of the GNU General Public License as published by
       6             :  * the Free Software Foundation, either version 2 of the License, or
       7             :  * (at your option) any later version.
       8             :  *
       9             :  * 0 A.D. is distributed in the hope that it will be useful,
      10             :  * but WITHOUT ANY WARRANTY; without even the implied warranty of
      11             :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      12             :  * GNU General Public License for more details.
      13             :  *
      14             :  * You should have received a copy of the GNU General Public License
      15             :  * along with 0 A.D.  If not, see <http://www.gnu.org/licenses/>.
      16             :  */
      17             : 
      18             : #ifndef INCLUDED_HASHSERIALIZER
      19             : #define INCLUDED_HASHSERIALIZER
      20             : 
      21             : #include "BinarySerializer.h"
      22             : 
      23             : #include "maths/MD5.h"
      24             : 
      25          13 : class CHashSerializerImpl
      26             : {
      27             :     // We don't care about cryptographic strength, just about detection of
      28             :     // unintended changes and about performance, so MD5 is an adequate choice
      29             :     typedef MD5 HashFunc;
      30             : 
      31             : public:
      32             :     size_t GetHashLength();
      33             :     const u8* ComputeHash();
      34             : 
      35         168 :     void Put(const char* UNUSED(name), const u8* data, size_t len)
      36             :     {
      37         168 :         m_Hash.Update(data, len);
      38         168 :     }
      39             : 
      40             : private:
      41             :     HashFunc m_Hash;
      42             :     u8 m_HashData[HashFunc::DIGESTSIZE];
      43             : };
      44             : 
      45          13 : class CHashSerializer : public CBinarySerializer<CHashSerializerImpl>
      46             : {
      47             : public:
      48             :     CHashSerializer(const ScriptInterface& scriptInterface);
      49             : 
      50             :     size_t GetHashLength();
      51             :     const u8* ComputeHash();
      52             : };
      53             : 
      54             : #endif // INCLUDED_HASHSERIALIZER