From: alex <alex@alex-VirtualBox.(none)>
Date: Wed, 22 Jan 2014 16:21:42 +0000 (+0400)
Subject: Sanity checking for coinstake inputs and checkwallet/repairwallet refactoring
X-Git-Tag: v0.4.4.7-nvc-next-testing~9
X-Git-Url: https://git.novaco.in/?a=commitdiff_plain;h=8bcd64f62569c687b6f521872355a3100589a5df;hp=ec444599c0ee829118dbc89185a95ef16497b39d;p=novacoin.git

Sanity checking for coinstake inputs and checkwallet/repairwallet refactoring
---

diff --git a/src/kernel.cpp b/src/kernel.cpp
index 85c0e36..1c1ca44 100644
--- a/src/kernel.cpp
+++ b/src/kernel.cpp
@@ -381,6 +381,13 @@ bool CheckProofOfStake(const CTransaction& tx, unsigned int nBits, uint256& hash
 
     const CTxOut& txout = txPrev.vout[txin.prevout.n];
 
+    // Check transaction consistency
+    if (txin.prevout.n >= txPrev.vout.size())
+    {
+        fFatal = true;
+        return error("CheckProofOfStake() : invalid prevout found in coinstake %s", tx.GetHash().ToString().c_str());
+    }
+
     // Verify script
     if (!VerifyScript(txin.scriptSig, txout.scriptPubKey, tx, 0, true, false, 0))
     {
diff --git a/src/wallet.cpp b/src/wallet.cpp
index 025b6c9..4eef99e 100644
--- a/src/wallet.cpp
+++ b/src/wallet.cpp
@@ -2213,8 +2213,9 @@ set< set<CTxDestination> > CWallet::GetAddressGroupings()
     return ret;
 }
 
-// ppcoin: check 'spent' consistency between wallet and txindex
-// ppcoin: fix wallet spent state according to txindex
+// 1. check 'spent' consistency between wallet and coins database
+// 2. fix wallet spent state according to coins database
+// 3. remove orphaned coinstakes and coinbases from wallet
 void CWallet::FixSpentCoins(int& nMismatchFound, int64& nBalanceInQuestion, bool fCheckOnly)
 {
     nMismatchFound = 0;
@@ -2229,46 +2230,50 @@ void CWallet::FixSpentCoins(int& nMismatchFound, int64& nBalanceInQuestion, bool
     CCoinsViewCache &view = *pcoinsTip;
     BOOST_FOREACH(CWalletTx* pcoin, vCoins)
     {
-        // Find the corresponding transaction index
-        CCoins coins;
+        uint256 hash = pcoin->GetHash();
+        if(!view.HaveCoins(hash))
+            continue;
 
-        bool fNotFound = view.GetCoins(pcoin->GetHash(), coins);
+        // Find the corresponding transaction index
+        CCoins &coins = view.GetCoins(hash);
 
         for (unsigned int n=0; n < pcoin->vout.size(); n++)
         {
-            if (!fNotFound && IsMine(pcoin->vout[n]) && pcoin->IsSpent(n) && coins.IsAvailable(n))
+            if (IsMine(pcoin->vout[n]))
             {
-                printf("FixSpentCoins found lost coin %sppc %s[%d], %s\n",
-                    FormatMoney(pcoin->vout[n].nValue).c_str(), pcoin->GetHash().ToString().c_str(), n, fCheckOnly? "repair not attempted" : "repairing");
-                nMismatchFound++;
-                nBalanceInQuestion += pcoin->vout[n].nValue;
-                if (!fCheckOnly)
+                if (pcoin->IsSpent(n) && coins.IsAvailable(n))
                 {
-                    pcoin->MarkUnspent(n);
-                    pcoin->WriteToDisk();
+                    printf("FixSpentCoins found lost coin %snvc %s[%d], %s\n",
+                        FormatMoney(pcoin->vout[n].nValue).c_str(), hash.ToString().c_str(), n, fCheckOnly? "repair not attempted" : "repairing");
+                    nMismatchFound++;
+                    nBalanceInQuestion += pcoin->vout[n].nValue;
+                    if (!fCheckOnly)
+                    {
+                        pcoin->MarkUnspent(n);
+                        pcoin->WriteToDisk();
+                    }
                 }
-            }
-            else if (!fNotFound && IsMine(pcoin->vout[n]) && !pcoin->IsSpent(n) && coins.IsAvailable(n))
-            {
-                printf("FixSpentCoins found spent coin %sppc %s[%d], %s\n",
-                    FormatMoney(pcoin->vout[n].nValue).c_str(), pcoin->GetHash().ToString().c_str(), n, fCheckOnly? "repair not attempted" : "repairing");
-                nMismatchFound++;
-                nBalanceInQuestion += pcoin->vout[n].nValue;
-                if (!fCheckOnly)
+                else if (!pcoin->IsSpent(n) && !coins.IsAvailable(n))
                 {
-                    pcoin->MarkSpent(n);
-                    pcoin->WriteToDisk();
+                    printf("FixSpentCoins found spent coin %snvc %s[%d], %s\n",
+                        FormatMoney(pcoin->vout[n].nValue).c_str(), hash.ToString().c_str(), n, fCheckOnly? "repair not attempted" : "repairing");
+                    nMismatchFound++;
+                    nBalanceInQuestion += pcoin->vout[n].nValue;
+                    if (!fCheckOnly)
+                    {
+                        pcoin->MarkSpent(n);
+                        pcoin->WriteToDisk();
+                    }
                 }
             }
-
         }
 
-        if(IsMine((CTransaction)*pcoin) && (pcoin->IsCoinBase() || pcoin->IsCoinStake()) && pcoin->GetDepthInMainChain() == 0)
+        if((pcoin->IsCoinBase() || pcoin->IsCoinStake()) && pcoin->GetDepthInMainChain() == 0)
         {
-            printf("FixSpentCoins %s tx %s\n", fCheckOnly ? "found" : "removed", pcoin->GetHash().ToString().c_str());
+            printf("FixSpentCoins %s orphaned generation tx %s\n", fCheckOnly ? "found" : "removed", hash.ToString().c_str());
             if (!fCheckOnly)
             {
-                EraseFromWallet(pcoin->GetHash());
+                EraseFromWallet(hash);
             }
         }
     }