Update License in File Headers

[novacoin.git] / src / rpc.cpp

diff --git a/src/rpc.cpp b/src/rpc.cpp
index 8967b2c..acd7a89 100644 (file)
--- a/src/rpc.cpp
+++ b/src/rpc.cpp
@@ -1,7 +1,7 @@
 // Copyright (c) 2010 Satoshi Nakamoto
 // Copyright (c) 2009-2012 The Bitcoin developers
 // Distributed under the MIT/X11 software license, see the accompanying
-// file license.txt or http://www.opensource.org/licenses/mit-license.php.
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
 #include "headers.h"
 #include "cryptopp/sha.h"
@@ -147,7 +147,7 @@ Value help(const Array& params, bool fHelp)
             // Help text is returned in an exception
             string strHelp = string(e.what());
             if (strCommand == "")
-                if (strHelp.find('\n') != -1)
+                if (strHelp.find('\n') != string::npos)
                     strHelp = strHelp.substr(0, strHelp.find('\n'));
             strRet += strHelp + "\n";
         }
@@ -685,8 +685,10 @@ Value getbalance(const Array& params, bool fHelp)
             list<pair<CBitcoinAddress, int64> > listSent;
             wtx.GetAmounts(allGeneratedImmature, allGeneratedMature, listReceived, listSent, allFee, strSentAccount);
             if (wtx.GetDepthInMainChain() >= nMinDepth)
+            {
                 BOOST_FOREACH(const PAIRTYPE(CBitcoinAddress,int64)& r, listReceived)
                     nBalance += r.second;
+            }
             BOOST_FOREACH(const PAIRTYPE(CBitcoinAddress,int64)& r, listSent)
                 nBalance -= r.second;
             nBalance -= allFee;
@@ -721,7 +723,8 @@ Value movecmd(const Array& params, bool fHelp)
         strComment = params[4].get_str();
 
     CWalletDB walletdb(pwalletMain->strWalletFile);
-    walletdb.TxnBegin();
+    if (!walletdb.TxnBegin())
+        throw JSONRPCError(-20, "database error");
 
     int64 nNow = GetAdjustedTime();
 
@@ -743,7 +746,8 @@ Value movecmd(const Array& params, bool fHelp)
     credit.strComment = strComment;
     walletdb.WriteAccountingEntry(credit);
 
-    walletdb.TxnCommit();
+    if (!walletdb.TxnCommit())
+        throw JSONRPCError(-20, "database error");
 
     return true;
 }
@@ -1046,6 +1050,7 @@ void ListTransactions(const CWalletTx& wtx, const string& strAccount, int nMinDe
 
     // Received
     if (listReceived.size() > 0 && wtx.GetDepthInMainChain() >= nMinDepth)
+    {
         BOOST_FOREACH(const PAIRTYPE(CBitcoinAddress, int64)& r, listReceived)
         {
             string account;
@@ -1063,6 +1068,7 @@ void ListTransactions(const CWalletTx& wtx, const string& strAccount, int nMinDe
                 ret.push_back(entry);
             }
         }
+    }
 }
 
 void AcentryToJSON(const CAccountingEntry& acentry, const string& strAccount, Array& ret)
@@ -1099,14 +1105,21 @@ Value listtransactions(const Array& params, bool fHelp)
     if (params.size() > 2)
         nFrom = params[2].get_int();
 
+    if (nCount < 0)
+        throw JSONRPCError(-8, "Negative count");
+    if (nFrom < 0)
+        throw JSONRPCError(-8, "Negative from");
+
     Array ret;
     CWalletDB walletdb(pwalletMain->strWalletFile);
 
-    // Firs: get all CWalletTx and CAccountingEntry into a sorted-by-time multimap:
+    // First: get all CWalletTx and CAccountingEntry into a sorted-by-time multimap.
     typedef pair<CWalletTx*, CAccountingEntry*> TxPair;
     typedef multimap<int64, TxPair > TxItems;
     TxItems txByTime;
 
+    // Note: maintaining indices in the database of (account,time) --> txid and (account, time) --> acentry
+    // would make this much faster for applications that do this a lot.
     for (map<uint256, CWalletTx>::iterator it = pwalletMain->mapWallet.begin(); it != pwalletMain->mapWallet.end(); ++it)
     {
         CWalletTx* wtx = &((*it).second);
@@ -1119,10 +1132,8 @@ Value listtransactions(const Array& params, bool fHelp)
         txByTime.insert(make_pair(entry.nTime, TxPair((CWalletTx*)0, &entry)));
     }
 
-    // Now: iterate backwards until we have nCount items to return:
-    TxItems::reverse_iterator it = txByTime.rbegin();
-    if (txByTime.size() > nFrom) std::advance(it, nFrom);
-    for (; it != txByTime.rend(); ++it)
+    // iterate backwards until we have nCount items to return:
+    for (TxItems::reverse_iterator it = txByTime.rbegin(); it != txByTime.rend(); ++it)
     {
         CWalletTx *const pwtx = (*it).second.first;
         if (pwtx != 0)
@@ -1131,18 +1142,21 @@ Value listtransactions(const Array& params, bool fHelp)
         if (pacentry != 0)
             AcentryToJSON(*pacentry, strAccount, ret);
 
-        if (ret.size() >= nCount) break;
+        if (ret.size() >= (nCount+nFrom)) break;
     }
-    // ret is now newest to oldest
+    // ret is newest to oldest
     
-    // Make sure we return only last nCount items (sends-to-self might give us an extra):
-    if (ret.size() > nCount)
-    {
-        Array::iterator last = ret.begin();
-        std::advance(last, nCount);
-        ret.erase(last, ret.end());
-    }
-    std::reverse(ret.begin(), ret.end()); // oldest to newest
+    if (nFrom > ret.size()) nFrom = ret.size();
+    if (nFrom+nCount > ret.size()) nCount = ret.size()-nFrom;
+    Array::iterator first = ret.begin();
+    std::advance(first, nFrom);
+    Array::iterator last = ret.begin();
+    std::advance(last, nFrom+nCount);
+
+    if (last != ret.end()) ret.erase(last, ret.end());
+    if (first != ret.begin()) ret.erase(ret.begin(), first);
+
+    std::reverse(ret.begin(), ret.end()); // Return oldest to newest
 
     return ret;
 }
@@ -1548,7 +1562,7 @@ Value getwork(const Array& params, bool fHelp)
         }
 
         // Update nTime
-        pblock->nTime = max(pindexPrev->GetMedianTimePast()+1, GetAdjustedTime());
+        pblock->UpdateTime(pindexPrev);
         pblock->nNonce = 0;
 
         // Update nExtraNonce