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HF: Genesis block includes fedpegscript and signblockscript #187

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Merged
merged 1 commit into from
Jul 19, 2017
Merged

HF: Genesis block includes fedpegscript and signblockscript #187

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22 changes: 18 additions & 4 deletions src/chainparams.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -10,13 +10,26 @@
#include "util.h"
#include "utilstrencodings.h"
#include "amount.h"
#include "crypto/ripemd160.h"

#include <assert.h>

#include <boost/assign/list_of.hpp>

#include "chainparamsseeds.h"

// Safer for users if they load incorrect parameters via arguments.
static std::vector<unsigned char> CommitToArguments(const Consensus::Params& params, const std::string& networkID, const CScript& signblockscript)
{
CRIPEMD160 ripemd;
unsigned char commitment[20];
ripemd.Write((const unsigned char*)networkID.c_str(), networkID.length());
ripemd.Write((const unsigned char*)HexStr(params.fedpegScript).c_str(), HexStr(params.fedpegScript).length());
ripemd.Write((const unsigned char*)HexStr(signblockscript).c_str(), HexStr(signblockscript).length());
ripemd.Finalize(commitment);
return std::vector<unsigned char>(commitment, commitment + 20);
}

static CScript StrHexToScriptWithDefault(std::string strScript, const CScript defaultScript)
{
CScript returnScript;
Expand All @@ -29,14 +42,15 @@ static CScript StrHexToScriptWithDefault(std::string strScript, const CScript de
return returnScript;
}

static CBlock CreateGenesisBlock(const char* pszTimestamp, const CScript& genesisOutputScript, uint32_t nTime, const CScript& scriptChallenge, int32_t nVersion, const CAmount& genesisReward, const uint32_t rewardShards, const CAsset& asset)
static CBlock CreateGenesisBlock(const Consensus::Params& params, const std::string& networkID, const CScript& genesisOutputScript, uint32_t nTime, const CScript& scriptChallenge, int32_t nVersion, const CAmount& genesisReward, const uint32_t rewardShards, const CAsset& asset)
{
// Shards must be evenly divisible
assert(MAX_MONEY % rewardShards == 0);
CMutableTransaction txNew;
txNew.nVersion = 1;
txNew.vin.resize(1);
txNew.vin[0].scriptSig = CScript() << 486604799 << CScriptNum(4) << std::vector<unsigned char>((const unsigned char*)pszTimestamp, (const unsigned char*)pszTimestamp + strlen(pszTimestamp));
// Any consensus-related values that are command-line set can be added here for anti-footgun
txNew.vin[0].scriptSig = CScript(CommitToArguments(params, networkID, scriptChallenge));
txNew.vout.resize(rewardShards);
for (unsigned int i = 0; i < rewardShards; i++) {
txNew.vout[i].nValue = genesisReward/rewardShards;
Expand Down Expand Up @@ -128,7 +142,7 @@ class CElementsParams : public CChainParams {

parentGenesisBlockHash = uint256S("000000000933ea01ad0ee984209779baaec3ced90fa3f408719526f8d77f4943");
CScript scriptDestination(CScript() << std::vector<unsigned char>(parentGenesisBlockHash.begin(), parentGenesisBlockHash.end()) << OP_WITHDRAWPROOFVERIFY);
genesis = CreateGenesisBlock(strNetworkID.c_str(), scriptDestination, 1231006505, genesisChallengeScript, 1, MAX_MONEY, 100, BITCOINID);
genesis = CreateGenesisBlock(consensus, strNetworkID, scriptDestination, 1231006505, genesisChallengeScript, 1, MAX_MONEY, 100, BITCOINID);
consensus.hashGenesisBlock = genesis.GetHash();

scriptCoinbaseDestination = CScript() << ParseHex("0229536c4c83789f59c30b93eb40d4abbd99b8dcc99ba8bd748f29e33c1d279e3c") << OP_CHECKSIG;
Expand Down Expand Up @@ -229,7 +243,7 @@ class CRegTestParams : public CChainParams {
nDefaultPort = 7042;
nPruneAfterHeight = 1000;

genesis = CreateGenesisBlock(strNetworkID.c_str(), defaultRegtestScript, 1296688602, genesisChallengeScript, 1, MAX_MONEY, 100, BITCOINID);
genesis = CreateGenesisBlock(consensus, strNetworkID, defaultRegtestScript, 1296688602, genesisChallengeScript, 1, MAX_MONEY, 100, BITCOINID);
consensus.hashGenesisBlock = genesis.GetHash();

parentGenesisBlockHash = uint256S("0f9188f13cb7b2c71f2a335e3a4fc328bf5beb436012afca590b1a11466e2206");
Expand Down
2 changes: 1 addition & 1 deletion src/init.cpp
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Expand Up @@ -1477,7 +1477,7 @@ bool AppInitMain(boost::thread_group& threadGroup, CScheduler& scheduler)
// If the loaded chain has a wrong genesis, bail out immediately
// (we're likely using a testnet datadir, or the other way around).
if (!mapBlockIndex.empty() && mapBlockIndex.count(chainparams.GetConsensus().hashGenesisBlock) == 0)
return InitError(_("Incorrect or no genesis block found. Wrong datadir for network?"));
return InitError(_("Incorrect or no genesis block found. Wrong `-fedpegscript`, `-signblockscript`, or datadir for network?"));

// Initialize the block index (no-op if non-empty database was already loaded)
if (!InitBlockIndex(chainparams)) {
Expand Down