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// Copyright (c) 2009-2010 Satoshi Nakamoto
// Copyright (c) 2009-2016 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#ifndef BITCOIN_CHAINPARAMS_H
#define BITCOIN_CHAINPARAMS_H
#include "chainparamsbase.h"
#include "consensus/params.h"
#include "primitives/block.h"
#include "protocol.h"
#include <vector>
struct CDNSSeedData {
std::string name, host;
bool supportsServiceBitsFiltering;
CDNSSeedData(const std::string &strName, const std::string &strHost, bool supportsServiceBitsFilteringIn = false) : name(strName), host(strHost), supportsServiceBitsFiltering(supportsServiceBitsFilteringIn) {}
};
struct SeedSpec6 {
uint8_t addr[16];
uint16_t port;
};
typedef std::map<int, uint256> MapCheckpoints;
struct CCheckpointData {
MapCheckpoints mapCheckpoints;
};
struct ChainTxData {
int64_t nTimeLastCheckpoint;
int64_t nTransactionsLastCheckpoint;
double fTransactionsPerDay;
};
/**
* CChainParams defines various tweakable parameters of a given instance of the
* Bitcoin system. There are three: the main network on which people trade goods
* and services, the public test network which gets reset from time to time and
* a regression test mode which is intended for private networks only. It has
* minimal difficulty to ensure that blocks can be found instantly.
*/
class CChainParams
{
public:
enum Base58Type {
PUBKEY_ADDRESS,
SCRIPT_ADDRESS,
SECRET_KEY,
EXT_PUBLIC_KEY,
EXT_SECRET_KEY,
MAX_BASE58_TYPES
};
const Consensus::Params& GetConsensus() const { return consensus; }
const CMessageHeader::MessageStartChars& MessageStart() const { return pchMessageStart; }
int GetDefaultPort() const { return nDefaultPort; }
const CBlock& GenesisBlock() const { return genesis; }
/** Make miner wait to have peers to avoid wasting work */
bool MiningRequiresPeers() const { return fMiningRequiresPeers; }
/** Default value for -checkmempool and -checkblockindex argument */
bool DefaultConsistencyChecks() const { return fDefaultConsistencyChecks; }
/** Policy: Filter transactions that do not match well-defined patterns */
bool RequireStandard() const { return fRequireStandard; }
uint64_t PruneAfterHeight() const { return nPruneAfterHeight; }
/** Make miner stop after a block is found. In RPC, don't return until nGenProcLimit blocks are generated */
bool MineBlocksOnDemand() const { return fMineBlocksOnDemand; }
/** Return the BIP70 network string (main, test or regtest) */
std::string NetworkIDString() const { return strNetworkID; }
const std::vector<CDNSSeedData>& DNSSeeds() const { return vSeeds; }
const std::vector<unsigned char>& Base58Prefix(Base58Type type) const { return base58Prefixes[type]; }
const std::vector<SeedSpec6>& FixedSeeds() const { return vFixedSeeds; }
const CCheckpointData& Checkpoints() const { return checkpointData; }
const ChainTxData& TxData() const { return chainTxData; }
protected:
CChainParams() {}
Consensus::Params consensus;
CMessageHeader::MessageStartChars pchMessageStart;
int nDefaultPort;
uint64_t nPruneAfterHeight;
std::vector<CDNSSeedData> vSeeds;
std::vector<unsigned char> base58Prefixes[MAX_BASE58_TYPES];
std::string strNetworkID;
CBlock genesis;
std::vector<SeedSpec6> vFixedSeeds;
bool fMiningRequiresPeers;
bool fDefaultConsistencyChecks;
bool fRequireStandard;
bool fMineBlocksOnDemand;
CCheckpointData checkpointData;
ChainTxData chainTxData;
};
/**
* Return the currently selected parameters. This won't change after app
* startup, except for unit tests.
*/
const CChainParams &Params();
/**
* @returns CChainParams for the given BIP70 chain name.
*/
CChainParams& Params(const std::string& chain);
/**
* Sets the params returned by Params() to those for the given BIP70 chain name.
* @throws std::runtime_error when the chain is not supported.
*/
void SelectParams(const std::string& chain);
/**
* Allows modifying the BIP9 regtest parameters.
*/
void UpdateRegtestBIP9Parameters(Consensus::DeploymentPos d, int64_t nStartTime, int64_t nTimeout);
#endif // BITCOIN_CHAINPARAMS_H
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