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Merge #988: [elements-0.18] Add liquidv1test chainparams
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f01651b Add liquidv1test chainparams. (Glenn Willen)
e3ece81 Fix description of -chain parameter (Glenn Willen)
6317e58 Change stray uses of global gArgs to args in CCustomParams (Glenn Willen)

Pull request description:

  Backport of #982.

Top commit has no ACKs.

Tree-SHA512: e83ae76dd1a34a09962e905ae8083931209d346ed679f62393adec63dc7e22a5a2eee8d23887c4be6d547c3d0e75570e7d21045fec136af9c9006c26983f6bf4
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@stevenroose
stevenroose committed May 6, 2021
2 parents 2665406 + f01651b commit b1a4078
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Showing 3 changed files with 300 additions and 8 deletions.
302 changes: 295 additions & 7 deletions src/chainparams.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -542,14 +542,14 @@ class CCustomParams : public CRegTestParams {
// ELEMENTS fields

// Determines type of genesis block
consensus.genesis_style = gArgs.GetArg("-con_genesis_style", "elements");
consensus.genesis_style = args.GetArg("-con_genesis_style", "elements");

// Block signing encumberance script, default of 51 aka OP_TRUE
std::vector<unsigned char> sign_bytes = ParseHex(gArgs.GetArg("-signblockscript", "51"));
std::vector<unsigned char> sign_bytes = ParseHex(args.GetArg("-signblockscript", "51"));
consensus.signblockscript = CScript(sign_bytes.begin(), sign_bytes.end());
// Default signature size is the size of dummy push, and single 72 byte DER signature
consensus.max_block_signature_size = gArgs.GetArg("-con_max_block_sig_size", 74);
g_signed_blocks = gArgs.GetBoolArg("-con_signed_blocks", true);
consensus.max_block_signature_size = args.GetArg("-con_max_block_sig_size", 74);
g_signed_blocks = args.GetBoolArg("-con_signed_blocks", true);

// Note: These globals are needed to avoid circular dependencies.
// Default to true for custom chains.
Expand All @@ -567,7 +567,7 @@ class CCustomParams : public CRegTestParams {
// Custom chains connect coinbase outputs to db by default
consensus.connect_genesis_outputs = args.GetArg("-con_connect_genesis_outputs", true);

initialFreeCoins = gArgs.GetArg("-initialfreecoins", 0);
initialFreeCoins = args.GetArg("-initialfreecoins", 0);

anyonecanspend_aremine = args.GetBoolArg("-anyonecanspendaremine", true);

Expand Down Expand Up @@ -609,8 +609,8 @@ class CCustomParams : public CRegTestParams {

// Subsidy asset, like policyAsset, defaults to the pegged_asset
consensus.subsidy_asset = consensus.pegged_asset;
if (gArgs.IsArgSet("-subsidyasset")) {
consensus.subsidy_asset = CAsset(uint256S(gArgs.GetArg("-subsidyasset", "0x00")));
if (args.IsArgSet("-subsidyasset")) {
consensus.subsidy_asset = CAsset(uint256S(args.GetArg("-subsidyasset", "0x00")));
}

consensus.vDeployments[Consensus::DEPLOYMENT_DYNA_FED].bit = 25;
Expand Down Expand Up @@ -894,7 +894,293 @@ class CLiquidV1Params : public CChainParams {
consensus.hashGenesisBlock = genesis.GetHash();
assert(consensus.hashGenesisBlock.GetHex() == "1466275836220db2944ca059a3a10ef6fd2ea684b0688d2c379296888a206003");
}
};

/**
* New: Liquid v1 testing, as close to prod as possible while still being customizable.
*/
class CLiquidV1TestParams : public CLiquidV1Params {
public:
explicit CLiquidV1TestParams(ArgsManager& args)
{
// Our goal here is to override ONLY the things from liquidv1 that make no sense for a test chain / which are pointless and burdensome to require people to override manually.

strNetworkID = "liquidv1test";

// required for some tests to consider this 'regtest'
fMineBlocksOnDemand = true;

vSeeds.clear(); // No network seeds
vFixedSeeds.clear(); // No network seeds

// 51 means OP_TRUE, this can be overridden on the commandline
std::vector<unsigned char> sign_bytes = ParseHex("51");
consensus.signblockscript = CScript(sign_bytes.begin(), sign_bytes.end());

// Do not mandate a specific destination for fees in testing
consensus.mandatory_coinbase_destination = CScript(); // Blank script allows any coinbase destination

// The bitcoin regtest genesis blockhash is the default, not the mainchain
parentGenesisBlockHash = uint256S("0f9188f13cb7b2c71f2a335e3a4fc328bf5beb436012afca590b1a11466e2206");
const bool parent_genesis_is_null = parentGenesisBlockHash == uint256();
assert(consensus.has_parent_chain != parent_genesis_is_null);

// This is the regtest limit, not the mainchain limit.
consensus.parentChainPowLimit = uint256S("7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff");
consensus.parent_chain_signblockscript = CScript(); // It has PoW

// Default to 8, not 100, for expedited testing.
consensus.pegin_min_depth = DEFAULT_PEGIN_CONFIRMATION_DEPTH;

// Default fedpegscrit is OP_TRUE (tests should override it)
consensus.fedpegScript = CScript() << OP_TRUE;

// For testing purposes, default to the same junk keys that CustomParams uses (this can be overridden.)
consensus.first_extension_space = {ParseHex("02fcba7ecf41bc7e1be4ee122d9d22e3333671eb0a3a87b5cdf099d59874e1940f02fcba7ecf41bc7e1be4ee122d9d22e3333671eb0a3a87b5cdf099d59874e1940f")};

// Use all regtest rather than mainchain magic numbers:
bech32_hrp = args.GetArg("-bech32_hrp", "ert");
blech32_hrp = args.GetArg("-blech32_hrp", "el");
base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1, args.GetArg("-pubkeyprefix", 235));
base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1, args.GetArg("-scriptprefix", 75));
base58Prefixes[BLINDED_ADDRESS] = std::vector<unsigned char>(1, args.GetArg("-blindedprefix", 4));
base58Prefixes[SECRET_KEY] = std::vector<unsigned char>(1, args.GetArg("-secretprefix", 239));
base58Prefixes[PARENT_PUBKEY_ADDRESS] = std::vector<unsigned char>(1, args.GetArg("-parentpubkeyprefix", 111));
base58Prefixes[PARENT_SCRIPT_ADDRESS] = std::vector<unsigned char>(1, args.GetArg("-parentscriptprefix", 196));
parent_bech32_hrp = args.GetArg("-parent_bech32_hrp", "bcrt");
parent_blech32_hrp = args.GetArg("-parent_blech32_hrp", "bcrt");

std::string extpubprefix = args.GetArg("-extpubkeyprefix", "043587CF");
assert(IsHex(extpubprefix) && extpubprefix.size() == 8 && "-extpubkeyprefix must be hex string of length 8");
base58Prefixes[EXT_PUBLIC_KEY] = ParseHex(extpubprefix);

std::string extprvprefix = args.GetArg("-extprvkeyprefix", "04358394");
assert(IsHex(extprvprefix) && extprvprefix.size() == 8 && "-extprvkeyprefix must be hex string of length 8");
base58Prefixes[EXT_SECRET_KEY] = ParseHex(extprvprefix);

const std::string magic_str = args.GetArg("-pchmessagestart", "FABFB5DA");
assert(IsHex(magic_str) && magic_str.size() == 8 && "-pchmessagestart must be hex string of length 8");
const std::vector<unsigned char> magic_byte = ParseHex(magic_str);
std::copy(begin(magic_byte), end(magic_byte), pchMessageStart);
// END magic numbers

UpdateFromArgs(args);
SetGenesisBlock();
consensus.hashGenesisBlock = genesis.GetHash();
}

// As much as possible here, our goal is to:
// - Allow overriding anything that can be overridden in CCustomParams;
// - Leave everything alone unless an argument / config parameter was given.
// This is unlike the CCustomParams UpdateFromArgs method, which has lots of defaults in it.
void UpdateFromArgs(ArgsManager& args)
{
// NOTE: We don't handle version bits, because I'm not sure we actually use them, and it would be messy to do so.
// UpdateVersionBitsParametersFromArgs(args);

consensus.nSubsidyHalvingInterval = args.GetArg("-con_nsubsidyhalvinginterval", consensus.nSubsidyHalvingInterval);
if (args.IsArgSet("-con_bip16exception")) {
consensus.BIP16Exception = uint256S(args.GetArg("-con_bip16exception", ""));
}
consensus.BIP34Height = args.GetArg("-con_bip34height", consensus.BIP34Height);
if (args.IsArgSet("-con_bip34hash")) {
consensus.BIP34Hash = uint256S(args.GetArg("-con_bip34hash", ""));
}
consensus.BIP65Height = args.GetArg("-con_bip65height", consensus.BIP65Height);
consensus.BIP66Height = args.GetArg("-con_bip66height", consensus.BIP66Height);
if (args.IsArgSet("-con_powlimit")) {
consensus.powLimit = uint256S(args.GetArg("-con_powlimit", ""));
}
consensus.nPowTargetTimespan = args.GetArg("-con_npowtargettimespan", consensus.nPowTargetTimespan);
consensus.nPowTargetSpacing = args.GetArg("-con_npowtargetspacing", consensus.nPowTargetSpacing);
consensus.fPowAllowMinDifficultyBlocks = args.GetBoolArg("-con_fpowallowmindifficultyblocks", consensus.fPowAllowMinDifficultyBlocks);
consensus.fPowNoRetargeting = args.GetBoolArg("-con_fpownoretargeting", consensus.fPowNoRetargeting);
consensus.nRuleChangeActivationThreshold = (uint32_t)args.GetArg("-con_nrulechangeactivationthreshold", consensus.nRuleChangeActivationThreshold);
consensus.nMinerConfirmationWindow = (uint32_t)args.GetArg("-con_nminerconfirmationwindow", consensus.nMinerConfirmationWindow);

if (args.IsArgSet("-con_nminimumchainwork")) {
consensus.nMinimumChainWork = uint256S(args.GetArg("-con_nminimumchainwork", ""));
}
if (args.IsArgSet("-con_defaultassumevalid")) {
consensus.defaultAssumeValid = uint256S(args.GetArg("-con_defaultassumevalid", ""));
}
// TODO: Embed in genesis block in nTime field with new genesis block type
consensus.dynamic_epoch_length = args.GetArg("-dynamic_epoch_length", consensus.dynamic_epoch_length);

std::vector<std::string> pak_list_str = args.GetArgs("-pak");
if (!pak_list_str.empty()) {
consensus.first_extension_space.clear();
for (const auto& entry : pak_list_str) {
consensus.first_extension_space.push_back(ParseHex(entry));
}
}

nPruneAfterHeight = (uint64_t)args.GetArg("-npruneafterheight", nPruneAfterHeight);
fDefaultConsistencyChecks = args.GetBoolArg("-fdefaultconsistencychecks", fDefaultConsistencyChecks);
fMineBlocksOnDemand = args.GetBoolArg("-fmineblocksondemand", fMineBlocksOnDemand);
m_fallback_fee_enabled = args.GetBoolArg("-fallback_fee_enabled", m_fallback_fee_enabled);

bech32_hrp = args.GetArg("-bech32_hrp", bech32_hrp);
blech32_hrp = args.GetArg("-blech32_hrp", blech32_hrp);

if (args.IsArgSet("-pubkeyprefix")) {
base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1, args.GetArg("-pubkeyprefix", 0));
}
if (args.IsArgSet("-scriptprefix")) {
base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1, args.GetArg("-scriptprefix", 0));
}
if (args.IsArgSet("-blindedprefix")) {
base58Prefixes[BLINDED_ADDRESS] = std::vector<unsigned char>(1, args.GetArg("-blindedprefix", 0));
}
if (args.IsArgSet("-secretprefix")) {
base58Prefixes[SECRET_KEY] = std::vector<unsigned char>(1, args.GetArg("-secretprefix", 0));
}
if (args.IsArgSet("-parentpubkeyprefix")) {
base58Prefixes[PARENT_PUBKEY_ADDRESS] = std::vector<unsigned char>(1, args.GetArg("-parentpubkeyprefix", 0));
}
if (args.IsArgSet("-parentscriptprefix")) {
base58Prefixes[PARENT_SCRIPT_ADDRESS] = std::vector<unsigned char>(1, args.GetArg("-parentscriptprefix", 0));
}
parent_bech32_hrp = args.GetArg("-parent_bech32_hrp", parent_bech32_hrp);
parent_blech32_hrp = args.GetArg("-parent_blech32_hrp", parent_blech32_hrp);

std::string extpubprefix = args.GetArg("-extpubkeyprefix", "043587CF");
assert(IsHex(extpubprefix) && extpubprefix.size() == 8 && "-extpubkeyprefix must be hex string of length 8");
base58Prefixes[EXT_PUBLIC_KEY] = ParseHex(extpubprefix);

std::string extprvprefix = args.GetArg("-extprvkeyprefix", "04358394");
assert(IsHex(extprvprefix) && extprvprefix.size() == 8 && "-extprvkeyprefix must be hex string of length 8");
base58Prefixes[EXT_SECRET_KEY] = ParseHex(extprvprefix);

const std::string magic_str = args.GetArg("-pchmessagestart", "FABFB5DA");
assert(IsHex(magic_str) && magic_str.size() == 8 && "-pchmessagestart must be hex string of length 8");
const std::vector<unsigned char> magic_byte = ParseHex(magic_str);
std::copy(begin(magic_byte), end(magic_byte), pchMessageStart);

vSeeds.clear();
if (args.IsArgSet("-seednode")) {
const auto seednodes = args.GetArgs("-seednode");
if (seednodes.size() != 1 || seednodes[0] != "0") {
vSeeds = seednodes;
}
}

//
// ELEMENTS fields

// Determines type of genesis block
consensus.genesis_style = args.GetArg("-con_genesis_style", consensus.genesis_style);

// Block signing encumberance script
if (args.IsArgSet("-signblockscript")) {
std::vector<unsigned char> sign_bytes = ParseHex(args.GetArg("-signblockscript", ""));
consensus.signblockscript = CScript(sign_bytes.begin(), sign_bytes.end());
}

consensus.max_block_signature_size = args.GetArg("-con_max_block_sig_size", consensus.max_block_signature_size);
g_signed_blocks = args.GetBoolArg("-con_signed_blocks", g_signed_blocks);

// Note: These globals are needed to avoid circular dependencies.
g_con_blockheightinheader = args.GetBoolArg("-con_blockheightinheader", g_con_blockheightinheader);

// Doesn't make any sense to use this chain in !elementsmode. Don't do it.
assert(args.GetBoolArg("-con_elementsmode", true));
g_con_elementsmode = true;
consensus.elements_mode = true;

consensus.genesis_subsidy = args.GetArg("-con_blocksubsidy", consensus.genesis_subsidy);

// All non-zero coinbase outputs must go to this scriptPubKey
if (args.IsArgSet("-con_mandatorycoinbase")) {
std::vector<unsigned char> man_bytes = ParseHex(args.GetArg("-con_mandatorycoinbase", ""));
consensus.mandatory_coinbase_destination = CScript(man_bytes.begin(), man_bytes.end()); // Blank script allows any coinbase destination
}

consensus.connect_genesis_outputs = args.GetArg("-con_connect_genesis_outputs", consensus.connect_genesis_outputs);

initialFreeCoins = args.GetArg("-initialfreecoins", initialFreeCoins);

anyonecanspend_aremine = args.GetBoolArg("-anyonecanspendaremine", anyonecanspend_aremine);

consensus.has_parent_chain = args.GetBoolArg("-con_has_parent_chain", consensus.has_parent_chain);

enforce_pak = args.GetBoolArg("-enforce_pak", enforce_pak);

multi_data_permitted = args.GetBoolArg("-multi_data_permitted", multi_data_permitted);

if (args.IsArgSet("-parentgenesisblockhash")) {
parentGenesisBlockHash = uint256S(args.GetArg("-parentgenesisblockhash", ""));
}
// Either it has a parent chain or not
const bool parent_genesis_is_null = parentGenesisBlockHash == uint256();
assert(consensus.has_parent_chain != parent_genesis_is_null);
if (args.IsArgSet("-con_parentpowlimit")) {
consensus.parentChainPowLimit = uint256S(args.GetArg("-con_parentpowlimit", ""));
}

if (args.IsArgSet("-con_parent_chain_signblockscript")) {
consensus.parent_chain_signblockscript = StrHexToScriptWithDefault(args.GetArg("-con_parent_chain_signblockscript", ""), CScript());
}
consensus.pegin_min_depth = args.GetArg("-peginconfirmationdepth", consensus.pegin_min_depth);

if (args.IsArgSet("-fedpegscript")) {
consensus.fedpegScript = StrHexToScriptWithDefault(args.GetArg("-fedpegscript", ""), CScript());
}

consensus.total_valid_epochs = args.GetArg("-total_valid_epochs", consensus.total_valid_epochs);

// Calculate pegged Bitcoin asset
std::vector<unsigned char> commit = CommitToArguments(consensus, strNetworkID);
uint256 entropy;
GenerateAssetEntropy(entropy, COutPoint(uint256(commit), 0), parentGenesisBlockHash);
CalculateAsset(consensus.pegged_asset, entropy);

if (args.IsArgSet("-con_parent_pegged_asset")) {
consensus.parent_pegged_asset.SetHex(args.GetArg("-con_parent_pegged_asset", ""));
}
initial_reissuance_tokens = args.GetArg("-initialreissuancetokens", initial_reissuance_tokens);

if (args.IsArgSet("-subsidyasset")) {
consensus.subsidy_asset = CAsset(uint256S(args.GetArg("-subsidyasset", "")));
}

if (args.IsArgSet("-con_dyna_deploy_start")) {
consensus.vDeployments[Consensus::DEPLOYMENT_DYNA_FED].bit = 25;
consensus.vDeployments[Consensus::DEPLOYMENT_DYNA_FED].nStartTime = args.GetArg("-con_dyna_deploy_start", Consensus::BIP9Deployment::ALWAYS_ACTIVE);
consensus.vDeployments[Consensus::DEPLOYMENT_DYNA_FED].nTimeout = Consensus::BIP9Deployment::NO_TIMEOUT;
}

// END ELEMENTS fields

// CSV always active by default, unlike regtest
if (args.IsArgSet("-con_csv_deploy_start")) {
consensus.vDeployments[Consensus::DEPLOYMENT_CSV].bit = 0;
consensus.vDeployments[Consensus::DEPLOYMENT_CSV].nStartTime = args.GetArg("-con_csv_deploy_start", Consensus::BIP9Deployment::ALWAYS_ACTIVE);
consensus.vDeployments[Consensus::DEPLOYMENT_CSV].nTimeout = Consensus::BIP9Deployment::NO_TIMEOUT;
}
}

// XXX: This is copy-and-pasted from CCustomParams; sharing it would be better, but is annoying.
void SetGenesisBlock() {
if (consensus.genesis_style == "bitcoin") {
// For compatibility with bitcoin (regtest)
genesis = CreateGenesisBlock(1296688602, 2, 0x207fffff, 1, 50 * COIN, consensus);
} else if (consensus.genesis_style == "elements") {
// Intended compatibility with Liquid v1 and elements-0.14.1
std::vector<unsigned char> commit = CommitToArguments(consensus, strNetworkID);
genesis = CreateGenesisBlock(consensus, CScript(commit), CScript(OP_RETURN), 1296688602, 2, 0x207fffff, 1, 0);
if (initialFreeCoins != 0 || initial_reissuance_tokens != 0) {
AppendInitialIssuance(genesis, COutPoint(uint256(commit), 0), parentGenesisBlockHash, (initialFreeCoins > 0) ? 1 : 0, initialFreeCoins, (initial_reissuance_tokens > 0) ? 1 : 0, initial_reissuance_tokens, CScript() << OP_TRUE);
}
} else if (consensus.genesis_style == "dynamic") {
// Liquid v2 HF, from genesis. Upgrading networks still use "elements".
// TODO fill out genesis block with special commitments including epoch
// length in nTime
throw std::runtime_error(strprintf("Invalid -genesis_style (%s)", consensus.genesis_style));
} else {
throw std::runtime_error(strprintf("Invalid -genesis_style (%s)", consensus.genesis_style));
}
}
};


Expand All @@ -916,6 +1202,8 @@ std::unique_ptr<const CChainParams> CreateChainParams(const std::string& chain)
return std::unique_ptr<CChainParams>(new CRegTestParams(gArgs));
else if (chain == CBaseChainParams::LIQUID1)
return std::unique_ptr<CChainParams>(new CLiquidV1Params());
else if (chain == CBaseChainParams::LIQUID1TEST)
return std::unique_ptr<CChainParams>(new CLiquidV1TestParams(gArgs));

return std::unique_ptr<CChainParams>(new CCustomParams(chain, gArgs));
}
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