PPCoin: Sign block when communicating with miners via RPC 'getwork'
[novacoin.git] / src / bitcoinrpc.cpp
index be5b6bc..e68f1fe 100644 (file)
@@ -1,6 +1,6 @@
 // Copyright (c) 2010 Satoshi Nakamoto
 // Copyright (c) 2011 The Bitcoin developers
-// Copyright (c) 2011 The PPCoin developers
+// Copyright (c) 2011-2012 The PPCoin developers
 // Distributed under the MIT/X11 software license, see the accompanying
 // file license.txt or http://www.opensource.org/licenses/mit-license.php.
 
@@ -8,6 +8,7 @@
 #include "db.h"
 #include "net.h"
 #include "init.h"
+#include "checkpoints.h"
 #undef printf
 #include <boost/asio.hpp>
 #include <boost/iostreams/concepts.hpp>
@@ -215,10 +216,11 @@ double GetDifficulty()
 
     if (pindexBest == NULL)
         return 1.0;
-    int nShift = (pindexBest->nBits >> 24) & 0xff;
+    const CBlockIndex* pindexLastProofOfWork = GetLastBlockIndex(pindexBest, false);
+    int nShift = (pindexLastProofOfWork->nBits >> 24) & 0xff;
 
     double dDiff =
-        (double)0x0000ffff / (double)(pindexBest->nBits & 0x00ffffff);
+        (double)0x0000ffff / (double)(pindexLastProofOfWork->nBits & 0x00ffffff);
 
     while (nShift < 29)
     {
@@ -307,10 +309,12 @@ Value getinfo(const Array& params, bool fHelp)
     Object obj;
     obj.push_back(Pair("version",       (int)VERSION));
     obj.push_back(Pair("balance",       ValueFromAmount(pwalletMain->GetBalance())));
+    obj.push_back(Pair("newmint",       ValueFromAmount(pwalletMain->GetNewMint())));
     obj.push_back(Pair("stake",         ValueFromAmount(pwalletMain->GetStake())));
     obj.push_back(Pair("blocks",        (int)nBestHeight));
     obj.push_back(Pair("connections",   (int)vNodes.size()));
     obj.push_back(Pair("proxy",         (fUseProxy ? addrProxy.ToStringIPPort() : string())));
+    obj.push_back(Pair("ip",            addrSeenByPeer.ToStringIP()));
     obj.push_back(Pair("generate",      (bool)fGenerateBitcoins));
     obj.push_back(Pair("genproclimit",  (int)(fLimitProcessors ? nLimitProcessors : -1)));
     obj.push_back(Pair("difficulty",    (double)GetDifficulty()));
@@ -624,7 +628,7 @@ Value getreceivedbyaddress(const Array& params, bool fHelp)
     for (map<uint256, CWalletTx>::iterator it = pwalletMain->mapWallet.begin(); it != pwalletMain->mapWallet.end(); ++it)
     {
         const CWalletTx& wtx = (*it).second;
-        if (wtx.IsCoinBase() || !wtx.IsFinal())
+        if (wtx.IsCoinBase() || wtx.IsCoinStake() || !wtx.IsFinal())
             continue;
 
         BOOST_FOREACH(const CTxOut& txout, wtx.vout)
@@ -671,7 +675,7 @@ Value getreceivedbyaccount(const Array& params, bool fHelp)
     for (map<uint256, CWalletTx>::iterator it = pwalletMain->mapWallet.begin(); it != pwalletMain->mapWallet.end(); ++it)
     {
         const CWalletTx& wtx = (*it).second;
-        if (wtx.IsCoinBase() || !wtx.IsFinal())
+        if (wtx.IsCoinBase() || wtx.IsCoinStake() || !wtx.IsFinal())
             continue;
 
         BOOST_FOREACH(const CTxOut& txout, wtx.vout)
@@ -908,6 +912,8 @@ Value sendmany(const Array& params, bool fHelp)
 
     if (pwalletMain->IsLocked())
         throw JSONRPCError(-13, "Error: Please enter the wallet passphrase with walletpassphrase first.");
+    if (fWalletUnlockStakeOnly)
+        throw JSONRPCError(-13, "Error: Wallet unlocked for coinstake only.");
 
     // Check funds
     int64 nBalance = GetAccountBalance(strAccount, nMinDepth);
@@ -959,7 +965,7 @@ Value ListReceived(const Array& params, bool fByAccounts)
     for (map<uint256, CWalletTx>::iterator it = pwalletMain->mapWallet.begin(); it != pwalletMain->mapWallet.end(); ++it)
     {
         const CWalletTx& wtx = (*it).second;
-        if (wtx.IsCoinBase() || !wtx.IsFinal())
+        if (wtx.IsCoinBase() || wtx.IsCoinStake() || !wtx.IsFinal())
             continue;
 
         int nDepth = wtx.GetDepthInMainChain();
@@ -1441,17 +1447,18 @@ void ThreadCleanWalletPassphrase(void* parg)
 
 Value walletpassphrase(const Array& params, bool fHelp)
 {
-    if (pwalletMain->IsCrypted() && (fHelp || params.size() != 2))
+    if (pwalletMain->IsCrypted() && (fHelp || params.size() < 2 || params.size() > 3))
         throw runtime_error(
-            "walletpassphrase <passphrase> <timeout>\n"
-            "Stores the wallet decryption key in memory for <timeout> seconds.");
+            "walletpassphrase <passphrase> <timeout> [stakeonly]\n"
+            "Stores the wallet decryption key in memory for <timeout> seconds.\n"
+            "stakeonly is optional true/false allowing only stake creation.");
     if (fHelp)
         return true;
     if (!pwalletMain->IsCrypted())
         throw JSONRPCError(-15, "Error: running with an unencrypted wallet, but walletpassphrase was called.");
 
     if (!pwalletMain->IsLocked())
-        throw JSONRPCError(-17, "Error: Wallet is already unlocked.");
+        throw JSONRPCError(-17, "Error: Wallet is already unlocked, use walletlock first if need to change unlock settings.");
 
     // Note that the walletpassphrase is stored in params[0] which is not mlock()ed
     SecureString strWalletPass;
@@ -1474,6 +1481,12 @@ Value walletpassphrase(const Array& params, bool fHelp)
     int* pnSleepTime = new int(params[1].get_int());
     CreateThread(ThreadCleanWalletPassphrase, pnSleepTime);
 
+    // ppcoin: if user OS account compromised prevent trivial sendmoney commands
+    if (params.size() > 2)
+        fWalletUnlockStakeOnly = params[2].get_bool();
+    else
+        fWalletUnlockStakeOnly = false;
+
     return Value::null;
 }
 
@@ -1644,14 +1657,14 @@ Value getwork(const Array& params, bool fHelp)
             nStart = GetTime();
 
             // Create new block
-            pblock = CreateNewBlock(reservekey);
+            pblock = CreateNewBlock(pwalletMain, true);
             if (!pblock)
                 throw JSONRPCError(-7, "Out of memory");
             vNewBlock.push_back(pblock);
         }
 
         // Update nTime
-        pblock->nTime = max(pindexPrev->GetMedianTimePast()+1, GetAdjustedTime());
+        pblock->nTime = max(pblock->GetBlockTime(), GetAdjustedTime());
         pblock->nNonce = 0;
 
         // Update nExtraNonce
@@ -1697,6 +1710,8 @@ Value getwork(const Array& params, bool fHelp)
         pblock->nNonce = pdata->nNonce;
         pblock->vtx[0].vin[0].scriptSig = mapNewBlock[pdata->hashMerkleRoot].second;
         pblock->hashMerkleRoot = pblock->BuildMerkleTree();
+        if (!pblock->SignBlock(*pwalletMain))
+            throw JSONRPCError(-100, "Unable to sign block");
 
         return CheckWork(pblock, *pwalletMain, reservekey);
     }
@@ -1742,7 +1757,7 @@ Value getmemorypool(const Array& params, bool fHelp)
             // Create new block
             if(pblock)
                 delete pblock;
-            pblock = CreateNewBlock(reservekey);
+            pblock = CreateNewBlock(pwalletMain);
             if (!pblock)
                 throw JSONRPCError(-7, "Out of memory");
         }
@@ -1753,7 +1768,7 @@ Value getmemorypool(const Array& params, bool fHelp)
 
         Array transactions;
         BOOST_FOREACH(CTransaction tx, pblock->vtx) {
-            if(tx.IsCoinBase())
+            if(tx.IsCoinBase() || tx.IsCoinStake())
                 continue;
 
             CDataStream ssTx;
@@ -1790,13 +1805,250 @@ Value getmemorypool(const Array& params, bool fHelp)
 }
 
 
+// ppcoin: get information of sync-checkpoint
+Value getcheckpoint(const Array& params, bool fHelp)
+{
+    if (fHelp || params.size() != 0)
+        throw runtime_error(
+            "getcheckpoint\n"
+            "Show info of synchronized checkpoint.\n");
+
+    Object result;
+    CBlockIndex* pindexCheckpoint;
+    
+    result.push_back(Pair("synccheckpoint", Checkpoints::hashSyncCheckpoint.ToString().c_str()));
+    pindexCheckpoint = mapBlockIndex[Checkpoints::hashSyncCheckpoint];        
+    result.push_back(Pair("height", pindexCheckpoint->nHeight));
+    result.push_back(Pair("timestamp", DateTimeStrFormat("%x %H:%M:%S", pindexCheckpoint->GetBlockTime()).c_str()));
+    
+    return result;
+}
+
+
+// ppcoin: reserve balance from being staked for network protection
+Value reservebalance(const Array& params, bool fHelp)
+{
+    if (fHelp || params.size() > 2)
+        throw runtime_error(
+            "reservebalance [<reserve> [amount]]\n"
+            "<reserve> is true or false to turn balance reserve on or off.\n"
+            "<amount> is a real and rounded to cent.\n"
+            "Set reserve amount not participating in network protection.\n"
+            "If no parameters provided current setting is printed.\n");
+
+    if (params.size() > 0)
+    {
+        bool fReserve = params[0].get_bool();
+        if (fReserve)
+        {
+            if (params.size() == 1)
+                throw runtime_error("must provide amount to reserve balance.\n");
+            int64 nAmount = AmountFromValue(params[1]);
+            nAmount = (nAmount / CENT) * CENT;  // round to cent
+            if (nAmount < 0)
+                throw runtime_error("amount cannot be negative.\n");
+            WriteSetting("nBalanceReserve", nBalanceReserve = nAmount);
+        }
+        else
+        {
+            if (params.size() > 1)
+                throw runtime_error("cannot specify amount to turn off reserve.\n");
+            WriteSetting("nBalanceReserve", nBalanceReserve = 0);
+        }
+    }
+
+    Object result;
+    result.push_back(Pair("reserve", (nBalanceReserve > 0)));
+    result.push_back(Pair("amount", ValueFromAmount(nBalanceReserve)));
+    return result;
+}
+
+
+// ppcoin: check wallet integrity
+Value checkwallet(const Array& params, bool fHelp)
+{
+    if (fHelp || params.size() > 0)
+        throw runtime_error(
+            "checkwallet\n"
+            "Check wallet for integrity.\n");
+
+    int nMismatchSpent;
+    int64 nBalanceInQuestion;
+    if (!pwalletMain->CheckSpentCoins(nMismatchSpent, nBalanceInQuestion))
+    {
+        Object result;
+        result.push_back(Pair("mismatched spent coins", nMismatchSpent));
+        result.push_back(Pair("amount in question", ValueFromAmount(nBalanceInQuestion)));
+        return result;
+    }
+    return Value::null;
+}
+
+
+// ppcoin: repair wallet
+Value repairwallet(const Array& params, bool fHelp)
+{
+    if (fHelp || params.size() > 0)
+        throw runtime_error(
+            "repairwallet\n"
+            "Repair wallet if checkwallet reports any problem.\n");
+
+    int nMismatchSpent;
+    int64 nBalanceInQuestion;
+    pwalletMain->FixSpentCoins(nMismatchSpent, nBalanceInQuestion);
+    Object result;
+    if (nMismatchSpent == 0)
+    {
+        result.push_back(Pair("wallet check passed", true));
+    }
+    else
+    {
+        result.push_back(Pair("mismatched spent coins", nMismatchSpent));
+        result.push_back(Pair("amount affected by repair", ValueFromAmount(nBalanceInQuestion)));
+    }
+    return result;
+}
 
+// ppcoin: make a public-private key pair
+Value makekeypair(const Array& params, bool fHelp)
+{
+    if (fHelp || params.size() > 1)
+        throw runtime_error(
+            "makekeypair [prefix]\n"
+            "Make a public/private key pair.\n"
+            "[prefix] is optional preferred prefix for the public key.\n");
 
+    string strPrefix = "";
+    if (params.size() > 0)
+        strPrefix = params[0].get_str();
+    CKey key;
+    do
+    {
+        key.MakeNewKey();
+    } while (strPrefix != HexStr(key.GetPubKey()).substr(0, strPrefix.size()));
+
+    CPrivKey vchPrivKey = key.GetPrivKey();
+    Object result;
+    result.push_back(Pair("PrivateKey", HexStr<CPrivKey::iterator>(vchPrivKey.begin(), vchPrivKey.end())));
+    result.push_back(Pair("PublicKey", HexStr(key.GetPubKey())));
+    return result;
+}
+
+extern CCriticalSection cs_mapAlerts;
+extern map<uint256, CAlert> mapAlerts;
+
+// ppcoin: send alert.  
+// There is a known deadlock situation with ThreadMessageHandler
+// ThreadMessageHandler: holds cs_vSend and acquiring cs_main in SendMessages()
+// ThreadRPCServer: holds cs_main and acquiring cs_vSend in alert.RelayTo()/PushMessage()/BeginMessage()
+Value sendalert(const Array& params, bool fHelp)
+{
+    if (fHelp || params.size() < 5)
+       throw runtime_error(
+            "sendalert <message> <privatekey> <minver> <maxver> <id> [cancelupto]\n"
+            "<message> is the alert text message\n"
+            "<privatekey> is hex string of alert master private key\n"
+            "<minver> is the minimum applicable client version\n"
+            "<maxver> is the maximum applicable client version\n"
+            "<id> is the alert id\n"
+            "[cancelupto] cancels all alert id's up to this number\n"
+            "Returns true or false.");    
+
+    CAlert alert;
+    CKey key;
+
+    alert.strStatusBar = params[0].get_str();
+    alert.nMinVer = params[2].get_int();
+    alert.nMaxVer = params[3].get_int();
+    alert.nID = params[4].get_int();
+    if (params.size() > 5)
+        alert.nCancel = params[5].get_int();
+    alert.nVersion = VERSION;
+    alert.nRelayUntil = GetAdjustedTime() + 365*24*60*60;
+    alert.nExpiration = GetAdjustedTime() + 365*24*60*60;
+    alert.nPriority = 1;
+
+    CDataStream sMsg;
+    sMsg << (CUnsignedAlert)alert;
+    alert.vchMsg = vector<unsigned char>(sMsg.begin(), sMsg.end());
+    
+    vector<unsigned char> vchPrivKey = ParseHex(params[1].get_str());
+    key.SetPrivKey(CPrivKey(vchPrivKey.begin(), vchPrivKey.end())); // if key is not correct openssl may crash
+    if (!key.Sign(Hash(alert.vchMsg.begin(), alert.vchMsg.end()), alert.vchSig))
+        throw runtime_error(
+            "Unable to sign alert, check private key?\n");  
+    if(!alert.ProcessAlert()) 
+        throw runtime_error(
+            "Failed to process alert.\n");
+    // Relay alert
+    CRITICAL_BLOCK(cs_vNodes)
+        BOOST_FOREACH(CNode* pnode, vNodes)
+            alert.RelayTo(pnode);
+
+    Object result;
+    result.push_back(Pair("strStatusBar", alert.strStatusBar));
+    result.push_back(Pair("nVersion", alert.nVersion));
+    result.push_back(Pair("nMinVer", alert.nMinVer));
+    result.push_back(Pair("nMaxVer", alert.nMaxVer));
+    result.push_back(Pair("nID", alert.nID));
+    if (alert.nCancel > 0)
+        result.push_back(Pair("nCancel", alert.nCancel));
+    return result;
+}
+
+// ppcoin: send checkpoint
+Value sendcheckpoint(const Array& params, bool fHelp)
+{
+    if (fHelp || params.size() > 2 || params.size() < 1 )
+        throw runtime_error(
+            "sendcheckpoint <privatekey> [checkpointhash]\n"
+            "<privatekey> is hex string of checkpoint master private key\n"
+            "<checkpointhash> is the hash of checkpoint block\n");
+
+    CSyncCheckpoint checkpoint;
+    CKey key;
 
+    // TODO: omit checkpointhash parameter
+    if (params.size() > 1)
+    {
+        checkpoint.hashCheckpoint = uint256(params[1].get_str());
+        if (!mapBlockIndex.count(checkpoint.hashCheckpoint))
+            throw runtime_error(
+                "Provided checkpoint block is not on main chain\n");
+    }
+    else
+    {
+        checkpoint.hashCheckpoint = Checkpoints::AutoSelectSyncCheckpoint();
+        if (checkpoint.hashCheckpoint == Checkpoints::hashSyncCheckpoint)
+            throw runtime_error(
+                "Unable to select a more recent sync-checkpoint");
+    }
 
+    CDataStream sMsg;
+    sMsg << (CUnsignedSyncCheckpoint)checkpoint;
+    checkpoint.vchMsg = vector<unsigned char>(sMsg.begin(), sMsg.end());
 
+    vector<unsigned char> vchPrivKey = ParseHex(params[0].get_str());
+    key.SetPrivKey(CPrivKey(vchPrivKey.begin(), vchPrivKey.end())); // if key is not correct openssl may crash
+    if (!key.Sign(Hash(checkpoint.vchMsg.begin(), checkpoint.vchMsg.end()), checkpoint.vchSig))
+        throw runtime_error(
+            "Unable to sign checkpoint, check private key?\n");
 
+    if(!checkpoint.ProcessSyncCheckpoint(NULL))
+        throw runtime_error(
+            "Failed to process checkpoint.\n");
+    // Relay checkpoint
+    CRITICAL_BLOCK(cs_vNodes)
+        BOOST_FOREACH(CNode* pnode, vNodes)
+            checkpoint.RelayTo(pnode);
 
+    Object result;
+    result.push_back(Pair("checkpoint", Checkpoints::hashSyncCheckpoint.ToString().c_str()));
+    result.push_back(Pair("height", mapBlockIndex[Checkpoints::hashSyncCheckpoint]->nHeight));
+    result.push_back(Pair("timestamp", DateTimeStrFormat("%x %H:%M:%S", mapBlockIndex[Checkpoints::hashSyncCheckpoint]->GetBlockTime()).c_str()));
+    return result;
+}
 
 
 //
@@ -1845,6 +2097,13 @@ pair<string, rpcfn_type> pCallTable[] =
     make_pair("settxfee",               &settxfee),
     make_pair("getmemorypool",          &getmemorypool),
     make_pair("listsinceblock",        &listsinceblock),
+    make_pair("getcheckpoint",         &getcheckpoint),
+    make_pair("reservebalance",         &reservebalance),
+    make_pair("checkwallet",            &checkwallet),
+    make_pair("repairwallet",           &repairwallet),
+    make_pair("makekeypair",            &makekeypair),
+    make_pair("sendalert",              &sendalert),
+    make_pair("sendcheckpoint",         &sendcheckpoint),
 };
 map<string, rpcfn_type> mapCallTable(pCallTable, pCallTable + sizeof(pCallTable)/sizeof(pCallTable[0]));
 
@@ -1871,6 +2130,7 @@ string pAllowInSafeMode[] =
     "validateaddress",
     "getwork",
     "getmemorypool",
+    "getcheckpoint",
 };
 set<string> setAllowInSafeMode(pAllowInSafeMode, pAllowInSafeMode + sizeof(pAllowInSafeMode)/sizeof(pAllowInSafeMode[0]));
 
@@ -2467,7 +2727,12 @@ int CommandLineRPC(int argc, char *argv[])
         if (strMethod == "listtransactions"       && n > 2) ConvertTo<boost::int64_t>(params[2]);
         if (strMethod == "listaccounts"           && n > 0) ConvertTo<boost::int64_t>(params[0]);
         if (strMethod == "walletpassphrase"       && n > 1) ConvertTo<boost::int64_t>(params[1]);
+        if (strMethod == "walletpassphrase"       && n > 2) ConvertTo<bool>(params[2]);
         if (strMethod == "listsinceblock"         && n > 1) ConvertTo<boost::int64_t>(params[1]);
+        if (strMethod == "sendalert"              && n > 2) ConvertTo<boost::int64_t>(params[2]);
+        if (strMethod == "sendalert"              && n > 3) ConvertTo<boost::int64_t>(params[3]);
+        if (strMethod == "sendalert"              && n > 4) ConvertTo<boost::int64_t>(params[4]);
+        if (strMethod == "sendalert"              && n > 5) ConvertTo<boost::int64_t>(params[5]);
         if (strMethod == "sendmany"               && n > 1)
         {
             string s = params[1].get_str();
@@ -2477,6 +2742,8 @@ int CommandLineRPC(int argc, char *argv[])
             params[1] = v.get_obj();
         }
         if (strMethod == "sendmany"                && n > 2) ConvertTo<boost::int64_t>(params[2]);
+        if (strMethod == "reservebalance"          && n > 0) ConvertTo<bool>(params[0]);
+        if (strMethod == "reservebalance"          && n > 1) ConvertTo<double>(params[1]);
 
         // Execute
         Object reply = CallRPC(strMethod, params);