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/*
Minetest-c55
Copyright (C) 2010-2011 celeron55, Perttu Ahola <celeron55@gmail.com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with/* sha1.cpp
Copyright (c) 2005 Michael D. Leonhard
http://tamale.net/
Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
of the Software, and to permit persons to whom the Software is furnished to do
so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT O
*/
class ServerEnvironment;
class InventoryItem;
class Player;
class ServerActiveObject : public ActiveObject
{
public:
/*
NOTE: m_env can be NULL, but step() isn't called if it is.
Prototypes are used that way.
*/
ServerActiveObject(ServerEnvironment *env, u16 id, v3f pos);
virtual ~ServerActiveObject();
// Create a certain type of ServerActiveObject
static ServerActiveObject* create(u8 type,
ServerEnvironment *env, u16 id, v3f pos,
const std::string &
c++;
}
}
// circular left bit rotation. MSB wraps around to LSB
Uint32 SHA1::lrot( Uint32 x, int bits )
{
return (x<<bits) | (x>>(32 - bits));
};
// Save a 32-bit unsigned integer to memory, in big-endian order
void SHA1::storeBigEndianUint32( unsigned char* byte, Uint32 num )
{
assert( byte );
byte[0] = (unsigned char)(num>>24);
byte[1] = (unsigned char)(num>>16);
byte[2] = (unsigned char)(num>>8);
byte[3] = (unsigned char)num;
}
// Constructor *******************************************************
SHA1::SHA1()
{
// make sure that the data type is the right size
assert( sizeof( Uint32 ) * 5 == 20 );
// initialize
H0 = 0x67452301;
H1 = 0xefcdab89;
H2 = 0x98badcfe;
H3 = 0x10325476;
H4 = 0xc3d2e1f0;
unprocessedBytes = 0;
size = 0;
}
// Destructor ********************************************************
SHA1::~SHA1()
{
// erase data
H0 = H1 = H2 = H3 = H4 = 0;
for( int c = 0; c < 64; c++ ) bytes[c] = 0;
unprocessedBytes = size = 0;
}
// process ***********************************************************
void SHA1::process()
{
assert( unprocessedBytes == 64 );
//printf( "process: " ); hexPrinter( bytes, 64 ); printf( "\n" );
int t;
Uint32 a, b, c,
bool m_pending_deactivation;
/*
Whether the object's static data has been stored to a block
*/
bool m_static_exists;
/*
The block from which the object was loaded from, and in which
a copy of the static data resides.
*/
v3s16 m_static_block;
/*
Queue of messages to be sent to the client
*/
Queue<ActiveObjectMessage> m_messages_out;
protected:
// Used for creating objects based on type
typedef ServerActiveObject* (*Factory)
(ServerEnvironment *env, u16 id, v3f pos,
const std::string &data);
static void registerType(u16 type, Factory f);
ServerEnvironment *m_env;
v3f m_base_position;
private:
// Used for creating objects based on type
static core::map<u16, Factory> m_types;
};
#endif
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