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Fixed Heartbleed and TimeWarp vulnerabilities. Added DigiShield difficulty retarget system starting from block 445000 (This changes force a Hard-Fork, therefore, client version was upgraded)

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rotocoin
2014-05-18 16:35:49 +02:00
parent 30cce35815
commit 1f0b80e20a
7 changed files with 104 additions and 26 deletions
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6
casinocoin-qt.pro
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@@ -1,7 +1,7 @@
TEMPLATE = app
TARGET = casinocoin-qt
macx:TARGET = "CasinoCoin-Qt"
VERSION = 1.1.0.0
VERSION = 1.2.0.0
INCLUDEPATH += src src/json src/qt
QT += core gui network
greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
@@ -23,8 +23,8 @@ BOOST_INCLUDE_PATH=E:/crypto/deps/boost_1_53_0
BOOST_LIB_PATH=E:/crypto/deps/boost_1_53_0/stage/lib
BDB_INCLUDE_PATH=E:/crypto/deps/db-4.8.30.NC/build_unix
BDB_LIB_PATH=E:/crypto/deps/db-4.8.30.NC/build_unix
OPENSSL_INCLUDE_PATH=E:/crypto/deps/openssl-1.0.1b/include
OPENSSL_LIB_PATH=E:/crypto/deps/openssl-1.0.1b
OPENSSL_INCLUDE_PATH=E:/crypto/deps/openssl-1.0.1g/include
OPENSSL_LIB_PATH=E:/crypto/deps/openssl-1.0.1g
QRENCODE_INCLUDE_PATH=E:/crypto/deps/qrencode-3.4.3
QRENCODE_LIB_PATH=E:/crypto/deps/qrencode-3.4.3/.libs

2
contrib/gitian-descriptors/README
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@@ -27,7 +27,7 @@ Once you've got the right hardware and software:
wget 'http://fukuchi.org/works/qrencode/qrencode-3.2.0.tar.bz2'
# Inputs for Win32: (Linux has packages for these)
wget 'https://downloads.sourceforge.net/project/boost/boost/1.50.0/boost_1_50_0.tar.bz2'
wget 'http://www.openssl.org/source/openssl-1.0.1c.tar.gz'
wget 'http://www.openssl.org/source/openssl-1.0.1g.tar.gz'
wget 'http://download.oracle.com/berkeley-db/db-4.8.30.NC.tar.gz'
wget 'https://downloads.sourceforge.net/project/libpng/zlib/1.2.6/zlib-1.2.6.tar.gz'
wget 'https://downloads.sourceforge.net/project/libpng/libpng15/older-releases/1.5.9/libpng-1.5.9.tar.gz'

6
contrib/gitian-descriptors/deps-win32.yml
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@@ -14,7 +14,7 @@ packages:
reference_datetime: "2011-01-30 00:00:00"
remotes: []
files:
- "openssl-1.0.1c.tar.gz"
- "openssl-1.0.1g.tar.gz"
- "db-4.8.30.NC.tar.gz"
- "miniupnpc-1.6.tar.gz"
- "zlib-1.2.6.tar.gz"
@@ -30,8 +30,8 @@ script: |
#
mkdir -p $INSTALLPREFIX
tar xzf openssl-1.0.1c.tar.gz
cd openssl-1.0.1c
tar xzf openssl-1.0.1g.tar.gz
cd openssl-1.0.1g
./Configure --cross-compile-prefix=$HOST- mingw --openssldir=$INSTALLPREFIX
make
make install_sw

6
doc/build-msw.txt
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@@ -26,7 +26,7 @@ Dependencies
Libraries you need to download separately and build:
default path download
OpenSSL \openssl-1.0.1b-mgw http://www.openssl.org/source/
OpenSSL \openssl-1.0.1g-mgw http://www.openssl.org/source/
Berkeley DB \db-4.8.30.NC-mgw http://www.oracle.com/technology/software/products/berkeley-db/index.html
Boost \boost-1.47.0-mgw http://www.boost.org/users/download/
miniupnpc \miniupnpc-1.6-mgw http://miniupnp.tuxfamily.org/files/
@@ -38,7 +38,7 @@ Boost MIT-like license
miniupnpc New (3-clause) BSD license
Versions used in this release:
OpenSSL 1.0.1b
OpenSSL 1.0.1g
Berkeley DB 4.8.30.NC
Boost 1.47.0
miniupnpc 1.6
@@ -50,7 +50,7 @@ MSYS shell:
un-tar sources with MSYS 'tar xfz' to avoid issue with symlinks (OpenSSL ticket 2377)
change 'MAKE' env. variable from 'C:\MinGW32\bin\mingw32-make.exe' to '/c/MinGW32/bin/mingw32-make.exe'
cd /c/openssl-1.0.1b-mgw
cd /c/openssl-1.0.1g-mgw
./config
make

2
src/clientversion.h
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@@ -7,7 +7,7 @@
// These need to be macros, as version.cpp's and bitcoin-qt.rc's voodoo requires it
#define CLIENT_VERSION_MAJOR 1
#define CLIENT_VERSION_MINOR 1
#define CLIENT_VERSION_MINOR 2
#define CLIENT_VERSION_REVISION 0
#define CLIENT_VERSION_BUILD 0

84
src/main.cpp
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@@ -1216,7 +1216,7 @@ unsigned int static KimotoGravityWell(const CBlockIndex* pindexLast, const CBloc
{
/* Kimoto Gravity Well implementation - credit to Dr Kimoto Chan of Megacoin */
//
// We need to add digishield or darkgravity. Unless a Dev can come up with another solution.
// DigiShield comes in at block 445000
//
const CBlockIndex *BlockLastSolved = pindexLast;
const CBlockIndex *BlockReading = pindexLast;
@@ -1292,6 +1292,82 @@ unsigned int static GetNextWorkRequired_V2(const CBlockIndex* pindexLast, const
return KimotoGravityWell(pindexLast, pblock, BlocksTargetSpacing, PastBlocksMin, PastBlocksMax);
}
unsigned int static DigiShield(const CBlockIndex* pindexLast, const CBlockHeader *pblock)
{
// DigiShield difficulty retarget system
// Credits to DigiByte developers
unsigned int nProofOfWorkLimit = bnProofOfWorkLimit.GetCompact();
int blockstogoback = 0;
//set default to pre-v2.0 values
int64 retargetTimespan = nTargetSpacing; //Make sure we retarget every block
int64 retargetSpacing = nTargetSpacing;
int64 retargetInterval = retargetTimespan / retargetSpacing;
// Genesis block
if (pindexLast == NULL) return nProofOfWorkLimit;
// Only change once per interval
if ((pindexLast->nHeight+1) % retargetInterval != 0){
// Special difficulty rule for testnet:
if (fTestNet){
// If the new block's timestamp is more than 2* 10 minutes
// then allow mining of a min-difficulty block.
if (pblock->nTime > pindexLast->nTime + retargetSpacing*2)
return nProofOfWorkLimit;
else {
// Return the last non-special-min-difficulty-rules-block
const CBlockIndex* pindex = pindexLast;
while (pindex->pprev && pindex->nHeight % retargetInterval != 0 && pindex->nBits == nProofOfWorkLimit)
pindex = pindex->pprev;
return pindex->nBits;
}
}
return pindexLast->nBits;
}
// DigiByte: This fixes an issue where a 51% attack can change difficulty at will.
// Go back the full period unless it's the first retarget after genesis. Code courtesy of Art Forz
blockstogoback = retargetInterval-1;
if ((pindexLast->nHeight+1) != retargetInterval) blockstogoback = retargetInterval;
// Go back by what we want to be 14 days worth of blocks
const CBlockIndex* pindexFirst = pindexLast;
for (int i = 0; pindexFirst && i < blockstogoback; i++)
pindexFirst = pindexFirst->pprev;
assert(pindexFirst);
// Limit adjustment step
int64 nActualTimespan = pindexLast->GetBlockTime() - pindexFirst->GetBlockTime();
printf(" nActualTimespan = %"PRI64d" before bounds\n", nActualTimespan);
CBigNum bnNew;
bnNew.SetCompact(pindexLast->nBits);
if (nActualTimespan < (retargetTimespan - (retargetTimespan/4)) ) nActualTimespan = (retargetTimespan - (retargetTimespan/4));
if (nActualTimespan > (retargetTimespan + (retargetTimespan/2)) ) nActualTimespan = (retargetTimespan + (retargetTimespan/2));
// Retarget
bnNew *= nActualTimespan;
bnNew /= retargetTimespan;
/// debug print
printf("DigiShield RETARGET \n");
printf("retargetTimespan = %"PRI64d" nActualTimespan = %"PRI64d"\n", retargetTimespan, nActualTimespan);
printf("Before: %08x %s\n", pindexLast->nBits, CBigNum().SetCompact(pindexLast->nBits).getuint256().ToString().c_str());
printf("After: %08x %s\n", bnNew.GetCompact(), bnNew.getuint256().ToString().c_str());
if (bnNew > bnProofOfWorkLimit)
bnNew = bnProofOfWorkLimit;
return bnNew.GetCompact();
}
unsigned int static GetNextWorkRequired(const CBlockIndex* pindexLast, const CBlockHeader *pblock)
{
int DiffMode = 1;
@@ -1301,12 +1377,14 @@ unsigned int static GetNextWorkRequired(const CBlockIndex* pindexLast, const CBl
}
else
{
if (pindexLast->nHeight+1 >= 227000) { DiffMode = 2; }
if (pindexLast->nHeight+1 >= 227000 && pindexLast->nHeight+1 < 445000) { DiffMode = 2; }
else if (pindexLast->nHeight+1 >= 445000) { DiffMode = 3; }
}
if (DiffMode == 1) { return GetNextWorkRequired_V1(pindexLast, pblock); }
else if (DiffMode == 2) { return GetNextWorkRequired_V2(pindexLast, pblock); }
return GetNextWorkRequired_V2(pindexLast, pblock);
else if (DiffMode == 3) { return DigiShield(pindexLast, pblock); }
return DigiShield(pindexLast, pblock);
}
bool CheckProofOfWork(uint256 hash, unsigned int nBits)

4
src/version.h
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@@ -25,13 +25,13 @@ extern const std::string CLIENT_DATE;
// network protocol versioning
//
static const int PROTOCOL_VERSION = 70002;
static const int PROTOCOL_VERSION = 70003;
// intial proto version, to be increased after version/verack negotiation
static const int INIT_PROTO_VERSION = 209;
// disconnect from peers older than this proto version
static const int MIN_PEER_PROTO_VERSION = 60002;
static const int MIN_PEER_PROTO_VERSION = 60002; // TODO: Change to 70003 before block 445000 to force new client downloading and therefore doing the actual hard fork
// nTime field added to CAddress, starting with this version;
// if possible, avoid requesting addresses nodes older than this