1 files changed, 102 insertions, 0 deletions
diff --git a/src/chainparams.h b/src/chainparams.h
new file mode 100644
index 0000000000..572712b589
--- /dev/null
+++ b/src/chainparams.h
@@ -0,0 +1,102 @@
+// Copyright (c) 2009-2010 Satoshi Nakamoto
+// Copyright (c) 2009-2013 The Bitcoin developers
+// Distributed under the MIT/X11 software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#ifndef BITCOIN_CHAIN_PARAMS_H
+#define BITCOIN_CHAIN_PARAMS_H
+
+#include "bignum.h"
+#include "uint256.h"
+#include "util.h"
+
+#include <vector>
+
+using namespace std;
+
+#define MESSAGE_START_SIZE 4
+typedef unsigned char MessageStartChars[MESSAGE_START_SIZE];
+
+class CAddress;
+class CBlock;
+
+struct CDNSSeedData {
+    string name, host;
+    CDNSSeedData(const string &strName, const string &strHost) : name(strName), host(strHost) {}
+};
+
+/**
+ * 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 Network {
+        MAIN,
+        TESTNET,
+        REGTEST,
+    };
+
+    enum Base58Type {
+        PUBKEY_ADDRESS,
+        SCRIPT_ADDRESS,
+        SECRET_KEY,
+
+        MAX_BASE58_TYPES
+    };
+
+    const uint256& HashGenesisBlock() const { return hashGenesisBlock; }
+    const MessageStartChars& MessageStart() const { return pchMessageStart; }
+    const vector<unsigned char>& AlertKey() const { return vAlertPubKey; }
+    int GetDefaultPort() const { return nDefaultPort; }
+    const CBigNum& ProofOfWorkLimit() const { return bnProofOfWorkLimit; }
+    int SubsidyHalvingInterval() const { return nSubsidyHalvingInterval; }
+    virtual const CBlock& GenesisBlock() const = 0;
+    virtual bool RequireRPCPassword() const { return true; }
+    const string& DataDir() const { return strDataDir; }
+    virtual Network NetworkID() const = 0;
+    const vector<CDNSSeedData>& DNSSeeds() const { return vSeeds; }
+    int Base58Prefix(Base58Type type) const { return base58Prefixes[type]; }
+    virtual const vector<CAddress>& FixedSeeds() const = 0;
+    int RPCPort() const { return nRPCPort; }
+protected:
+    CChainParams() {};
+
+    uint256 hashGenesisBlock;
+    MessageStartChars pchMessageStart;
+    // Raw pub key bytes for the broadcast alert signing key.
+    vector<unsigned char> vAlertPubKey;
+    int nDefaultPort;
+    int nRPCPort;
+    CBigNum bnProofOfWorkLimit;
+    int nSubsidyHalvingInterval;
+    string strDataDir;
+    vector<CDNSSeedData> vSeeds;
+    int base58Prefixes[MAX_BASE58_TYPES];
+};
+
+/**
+ * Return the currently selected parameters. This won't change after app startup
+ * outside of the unit tests.
+ */
+const CChainParams &Params();
+
+/** Sets the params returned by Params() to those for the given network. */
+void SelectParams(CChainParams::Network network);
+
+/**
+ * Looks for -regtest or -testnet and then calls SelectParams as appropriate.
+ * Returns false if an invalid combination is given.
+ */
+bool SelectParamsFromCommandLine();
+
+inline bool TestNet() {
+    // Note: it's deliberate that this returns "false" for regression test mode.
+    return Params().NetworkID() == CChainParams::TESTNET;
+}
+
+#endif