Where do I start?

CMakeLists.txt

@@ -38,6 +38,12 @@ if( MYSQL )
   find_package(MySQL REQUIRED)
 endif()
 
+# GMP
+find_package(GMP REQUIRED)
+
+# OpenSSL
+find_package(OpenSSL REQUIRED)
+
 # Print options
 include(cmake/showoptions.cmake)
 

cmake/macros/FindGMP.cmake

@@ -0,0 +1,23 @@
+# Try to find the GMP librairies
+#  GMP_FOUND - system has GMP lib
+#  GMP_INCLUDE_DIR - the GMP include directory
+#  GMP_LIBRARIES - Libraries needed to use GMP
+# Copyright (c) 2006, Laurent Montel, <montel@kde.org>
+#
+# Redistribution and use is allowed according to the terms of the BSD license.
+# For details see the accompanying COPYING-CMAKE-SCRIPTS file.
+
+if (GMP_INCLUDE_DIR AND GMP_LIBRARIES)
+  # Already in cache, be silent
+  set(GMP_FIND_QUIETLY TRUE)
+endif (GMP_INCLUDE_DIR AND GMP_LIBRARIES)
+
+find_path(GMP_INCLUDE_DIR NAMES gmp.h )
+find_library(GMP_LIBRARIES NAMES gmp libgmp )
+find_library(GMPXX_LIBRARIES NAMES gmpxx libgmpxx )
+MESSAGE(STATUS "GMP libs: " ${GMP_LIBRARIES} " " ${GMPXX_LIBRARIES} )
+
+include(FindPackageHandleStandardArgs)
+FIND_PACKAGE_HANDLE_STANDARD_ARGS(GMP DEFAULT_MSG GMP_INCLUDE_DIR GMP_LIBRARIES)
+
+mark_as_advanced(GMP_INCLUDE_DIR GMP_LIBRARIES)

src/server/poolserver/CMakeLists.txt

@@ -22,8 +22,10 @@ include_directories(
   ${CMAKE_SOURCE_DIR}/src/server/shared/Logging
   ${CMAKE_SOURCE_DIR}/src/server/shared/JSON
   ${CMAKE_SOURCE_DIR}/src/server/shared/JSONRPC
+  ${CMAKE_SOURCE_DIR}/src/server/shared/Bitcoin
   ${Boost_INCLUDE_DIR}
   ${MYSQL_INCLUDE_DIR}
+  ${GMP_INCLUDE_DIR}
 )
 
 # Create executable
@@ -36,6 +38,9 @@ target_link_libraries(poolserver
   shared
   ${Boost_LIBRARIES}
   ${MYSQL_LIBRARY}
+  ${GMP_LIBRARIES}
+  ${GMPXX_LIBRARIES}
+  ${OPENSSL_LIBRARIES}
 )
 
 # Install

src/server/poolserver/Server/Server.cpp

@@ -4,10 +4,12 @@
 #include "Log.h"
 #include "Stratum/Server.h"
 #include "ServerDatabaseEnv.h"
+#include "Crypto.h"
 
 #include <boost/thread.hpp>
 #include <boost/algorithm/string.hpp>
 #include <iostream>
+#include <algorithm>
 
 Server::Server() : serverLoops(0)
 {
@@ -32,6 +34,13 @@ int Server::Run()
     
     //InitDatabase();
     
+    //sLog.Info(LOG_SERVER, "Hash: %s", Util::BinToASCII(Crypto::SHA256("labas")).c_str());
+    std::vector<byte> trans = Util::ASCIIToBin("010000002e0fb65201eb031afcccb670d0abbb94e0d2a97c2c81c8dd3eac02a92780578e06d1c5d067000000006c493046022100fdac85d847568c37edb07101ba0e7a32b47491c7cd81798190cbc190cbc439e5022100ab6145c93a822d861ae76482506425f05016bac7b901c08aa58dff8cd7d8e0cb012102421c601634e066fcc4d8aa768dfad475ae9eccc5daf3169522572468550483dbffffffff02a08fb502000000001976a9142ef2b6de3e3a269c5883a0717948e257814b6ba688ac8cf51300000000001976a9144221049afbb6ddb1886a12d7d0300365e8769f2088ac00000000");
+    //std::vector<byte> trans = Util::ASCIIToBin("abcd");
+    //std::reverse(trans.begin(), trans.end());
+    sLog.Info(LOG_SERVER, "Trans: %s", Util::BinToASCII(trans).c_str());
+    sLog.Info(LOG_SERVER, "Hash: %s", Util::BinToASCII(Util::Reverse(Crypto::SHA256D(trans))).c_str());
+    
     // Main io service
     asio::io_service io_service;
     

src/server/poolserver/Stratum/Server.h

@@ -7,6 +7,8 @@
 #include "Log.h"
 #include "JSON.h"
 #include "JSONRPC.h"
+#include "Bitcoin.h"
+#include "Util.h"
 
 #include <boost/asio.hpp>
 #include <boost/bind.hpp>
@@ -85,6 +87,16 @@ namespace Stratum
             _StartAccept();
         }
         
+        void _UpdateWork(bool reset)
+        {
+            JSON response = _bitcoinrpc->Query("getblocktemplate");
+            
+            Bitcoin::Block* block = new Bitcoin::Block();
+            block->version = response.Get<uint32>("version");
+            block->prevBlockHash = Util::ASCIIToBin(response.Get<std::string>("previousblockhash"));
+            
+        }
+        
         void _CheckBlocks()
         {
             sLog.Debug(LOG_STRATUM, "Checking for new blocks...");
@@ -92,13 +104,10 @@ namespace Stratum
             JSON response = _bitcoinrpc->Query("getinfo");
             uint32 curBlock = response.Get<uint32>("blocks");
             
-            // Initializing server
-            if (_blockHeight == 0) {
-                _blockHeight = curBlock;
-            } else if (curBlock > _blockHeight) {
+            if (curBlock > _blockHeight) {
                 sLog.Debug(LOG_STRATUM, "New block on network! Height: %u", curBlock);
                 _blockHeight = curBlock;
-                // do some crazy stuff
+                _UpdateWork(true);
             }
             
             _blockCheckTimer.expires_from_now(boost::posix_time::milliseconds(sConfig.Get<uint32>("StratumBlockCheckTime")));
@@ -116,6 +125,9 @@ namespace Stratum
         // Bitcoin info
         asio::deadline_timer _blockCheckTimer;
         uint32 _blockHeight;
+        
+        // Work
+        Bitcoin::Block* _currentWork;
     };
 }
 

src/server/shared/BigNum.h

@@ -0,0 +1,8 @@
+#ifndef BIGNUM_H_
+#define BIGNUM_H_
+
+#include <gmpxx.h>
+
+typedef mpz_class BigNum;
+
+#endif

src/server/shared/Bitcoin/Bitcoin.h

@@ -0,0 +1,7 @@
+#ifndef BITCOIN_H_
+#define BITCOIN_H_
+
+#include "Block.h"
+#include "Transaction.h"
+
+#endif

src/server/shared/Bitcoin/Block.h

@@ -1,40 +1,33 @@
-#ifndef BITCOIN_H_
-#define BITCOIN_H_
+#ifndef BITCOIN_BLOCK_H_
+#define BITCOIN_BLOCK_H_
 
-namespace Bitcoin
-{
-    class TxIn
-    {
-    };
+#include "Common.h"
+#include "Transaction.h"
 
-    class TxOut
-    {
-    };
-    
-    class Transaction
-    {
-        uint32 Version;
-        std::vector<TxIn> in;
-        std::vector<TxOut> out;
-        uint32 LockTime;
-    };
+#include <vector>
 
+namespace Bitcoin
+{
     class BlockHeader
     {
-        uint32 Version;
-        std::array<char, 32> PrevBlockHash;
-        std::array<char, 32> MerkleRootHash;
-        uint32 Time;
-        uint32 Bits;
-        uint32 Nonce;
+    public:
+        uint32 version;
+        std::vector<byte> prevBlockHash;
+        std::vector<byte> merkleRootHash;
+        uint32 time;
+        uint32 bits;
+        uint32 nonce;
     };
     
     class Block : public BlockHeader
     {
+    public:
         std::vector<Transaction> tx;
-    };
         
-    class BlockTemplate
+        std::vector<byte> GenerateMerkle()
+        {
+        }
+    };
 }
 
 #endif

src/server/shared/Bitcoin/Script.h

@@ -0,0 +1,65 @@
+#ifndef BITCOIN_SCRIPT_H_
+#define BITCOIN_SCRIPT_H_
+
+#include "Common.h"
+#include <boost/range/join.hpp>
+#include <vector>
+
+namespace Bitcoin
+{
+    enum ScriptOPCode
+    {
+        OP_0                = 0x00,
+        OP_FALSE            = OP_0,
+        OP_PUSHDATA1        = 0x4C,
+        OP_PUSHDATA2        = 0x4D,
+        OP_PUSHDATA4        = 0x4E,
+        OP_CHECKSIG         = 0xAC,
+    };
+    
+    class Script
+    {
+    public:
+        Script() {}
+        Script(std::vector<byte> data) : script(data) {}
+        
+        std::vector<byte> script;
+        
+        const Script operator+(const Script& other)
+        {
+            std::vector<byte> tmp = script;
+            tmp.insert(tmp.end(), other.script.begin(), other.script.end());
+            return Script(tmp);
+        }
+        
+        const Script operator+(const std::vector<byte> data)
+        {
+            Script tmp(script);
+            
+            size_t size = data.size();
+            
+            if (size >= 1 && size <= 75) {
+                // We know size!
+                tmp.script.resize(size+1);
+                
+                // Push data size
+                tmp.script.push_back((byte)size);
+                
+                // We start from 1 because index 0 is size opcode
+                for (uint16 i = 1; i <= size; ++i)
+                    tmp.script[i] = (byte)data[i];
+            }
+            
+            return tmp;
+        }
+        
+        const Script operator+(const ScriptOPCode op)
+        {
+            Script tmp(script);
+            tmp.script.push_back((byte)op);
+            return tmp;
+        }
+    };
+}
+
+#endif

src/server/shared/Bitcoin/Transaction.h

@@ -0,0 +1,42 @@
+#ifndef BITCOIN_TRANSACTION_H_
+#define BITCOIN_TRANSACTION_H_
+
+#include "Common.h"
+#include "BigNum.h"
+#include "Script.h"
+
+namespace Bitcoin
+{
+    class OutPoint
+    {
+        std::vector<byte> hash;
+        uint32 n;
+    };
+    
+    class InPoint
+    {
+    };
+    
+    class TxIn
+    {
+        OutPoint prevout;
+        Script script;
+        uint32 n;
+    };
+    
+    class TxOut
+    {
+        int64 value;
+        Script scriptPubKey;
+    };
+    
+    class Transaction
+    {
+        uint32 version;
+        std::vector<TxIn> in;
+        std::vector<TxOut> out;
+        uint32 lockTime;
+    };
+}
+
+#endif

src/server/shared/CMakeLists.txt

@@ -4,6 +4,7 @@ file(GLOB_RECURSE sources_MySQL MySQL/*.cpp MySQL/*.h)
 file(GLOB_RECURSE sources_Logging Logging/*.cpp Logging/*.h)
 file(GLOB_RECURSE sources_JSON JSON/*.cpp JSON/*.h)
 file(GLOB_RECURSE sources_JSONRPC JSONRPC/*.cpp JSONRPC/*.h)
+file(GLOB_RECURSE sources_Bitcoin Bitcoin/*.cpp Bitcoin/*.h)
 
 file(GLOB sources_localdir *.cpp *.h)
 
@@ -13,6 +14,7 @@ set(sources_Shared
   ${sources_Logging}
   ${sources_JSON}
   ${sources_JSONRPC}
+  ${sources_Bitcoin}
   ${sources_localdir}
 )
 
@@ -23,8 +25,11 @@ include_directories(
   ${CMAKE_CURRENT_SOURCE_DIR}/Logging
   ${CMAKE_CURRENT_SOURCE_DIR}/JSON
   ${CMAKE_CURRENT_SOURCE_DIR}/JSONRPC
+  ${CMAKE_CURRENT_SOURCE_DIR}/Bitcoin
   ${Boost_INCLUDE_DIR}
   ${MYSQL_INCLUDE_DIR}
+  ${GMP_INCLUDE_DIR}
+  ${OPENSSL_INCLUDE_DIR}
 )
 
 add_library(shared STATIC

src/server/shared/Common.h

@@ -13,4 +13,6 @@ typedef int16_t int16;
 typedef int32_t int32;
 typedef int64_t int64;
 
+typedef uint8_t byte;
+
 #endif

src/server/shared/Crypto.h

@@ -0,0 +1,34 @@
+#ifndef CRYPTO_H_
+#define CRYPTO_H_
+
+#include "Common.h"
+#include "Util.h"
+#include <string>
+#include <vector>
+#include <openssl/sha.h>
+
+namespace Crypto
+{
+    std::vector<byte> SHA256(std::vector<byte> data)
+    {
+        std::vector<byte> hash;
+        hash.resize(SHA256_DIGEST_LENGTH);
+        SHA256_CTX sha256;
+        SHA256_Init(&sha256);
+        SHA256_Update(&sha256, &data[0], data.size());
+        SHA256_Final(&hash[0], &sha256);
+        return std::vector<byte>(hash.begin(), hash.end());
+    }
+    
+    std::vector<byte> SHA256(std::string data)
+    {
+        return SHA256(std::vector<byte>(data.begin(), data.end()));
+    }
+    
+    std::vector<byte> SHA256D(std::vector<byte> data)
+    {
+        return SHA256(SHA256(data));
+    }
+}
+
+#endif

src/server/shared/MySQL/PreparedStatement.h

@@ -1,7 +1,7 @@
 #ifndef PREPARED_STATEMENT_MYSQL_H_
 #define PREPARED_STATEMENT_MYSQL_H_
 
-#include <Common.h>
+#include "Common.h"
 
 #include <boost/variant.hpp>
 #include <mysql.h>

src/server/shared/Util.cpp

@@ -42,3 +42,46 @@ std::string Util::FromBase64(std::string input)
     result.erase(result.end() - paddChars, result.end());  // erase padding '\0' characters
     return result;
 }
+
+uint8 Util::ASCIIToHex(char ch)
+{
+    if (ch > 47 && ch < 58)
+        return ch - 48;
+    else if (ch > 64 && ch < 71)
+        return ch - 55;
+    else if (ch > 96 && ch < 103)
+        return ch - 87;
+    else 
+        return 0; // Invalid
+}
+
+std::vector<byte> Util::ASCIIToBin(std::string str)
+{
+    std::vector<byte> data;
+    data.resize(str.size()/2, 0);
+    for (uint64 i = 0; i < str.size(); ++i) {
+        if (i%2)
+            data[i/2] += ASCIIToHex(str[i]);
+        else
+            data[i/2] += ASCIIToHex(str[i])*16;
+    }
+    return data;
+}
+
+std::string Util::BinToASCII(std::vector<byte> data)
+{
+    std::string str;
+    for (uint64 i = 0; i < data.size(); ++i)
+    {
+        str += "0123456789abcdef"[data[i]/16];
+        str += "0123456789abcdef"[data[i]%16];
+    }
+    return str;
+}
+
+std::vector<byte> Util::Reverse(std::vector<byte> data)
+{
+    std::vector<byte> out = data;
+    std::reverse(out.begin(), out.end());
+    return out;
+}

src/server/shared/Util.h

@@ -1,7 +1,7 @@
 #ifndef UTIL_H_
 #define UTIL_H_
 
-#include <Common.h>
+#include "Common.h"
 
 #include <sstream>
 #include <iostream>
@@ -103,6 +103,11 @@ namespace Util
     
     std::string ToBase64(std::string input, bool linebreaks = true);
     std::string FromBase64(std::string input);
+    
+    uint8 ASCIIToHex(char ch);
+    std::vector<byte> ASCIIToBin(std::string str);
+    std::string BinToASCII(std::vector<byte> data);
+    std::vector<byte> Reverse(std::vector<byte> data);
 }
 
 #endif