From 172f006020965ae8763a0610845c051ed1e3b522 Mon Sep 17 00:00:00 2001
From: s_nakamoto <s_nakamoto@1a98c847-1fd6-4fd8-948a-caf3550aa51b>
Date: Sun, 19 Sep 2010 21:20:34 +0000
Subject: [PATCH] only accept transactions sent by IP address if
 -allowreceivebyip is specified

git-svn-id: https://bitcoin.svn.sourceforge.net/svnroot/bitcoin/trunk@156 1a98c847-1fd6-4fd8-948a-caf3550aa51b
---
 main.cpp    | 38 +++++++++++++++++++++++---------------
 serialize.h |  2 +-
 ui.cpp      |  8 ++++++--
 3 files changed, 30 insertions(+), 18 deletions(-)

diff --git a/main.cpp b/main.cpp
index 5b7829e88..d41801d9e 100644
--- a/main.cpp
+++ b/main.cpp
@@ -1374,9 +1374,13 @@ bool CBlock::CheckBlock() const
     // that can be verified before saving an orphan block.
 
     // Size limits
-    if (vtx.empty() || vtx.size() > MAX_SIZE || ::GetSerializeSize(*this, SER_NETWORK) > MAX_SIZE)
+    if (vtx.empty() || vtx.size() > MAX_BLOCK_SIZE || ::GetSerializeSize(*this, SER_NETWORK) > MAX_BLOCK_SIZE)
         return error("CheckBlock() : size limits failed");
 
+    // Check proof of work matches claimed amount
+    if (!CheckProofOfWork(GetHash(), nBits))
+        return error("CheckBlock() : proof of work failed");
+
     // Check timestamp
     if (GetBlockTime() > GetAdjustedTime() + 2 * 60 * 60)
         return error("CheckBlock() : block timestamp too far in the future");
@@ -1393,9 +1397,9 @@ bool CBlock::CheckBlock() const
         if (!tx.CheckTransaction())
             return error("CheckBlock() : CheckTransaction failed");
 
-    // Check proof of work matches claimed amount
-    if (!CheckProofOfWork(GetHash(), nBits))
-        return error("CheckBlock() : proof of work failed");
+    // Check that it's not full of nonstandard transactions
+    if (GetSigOpCount() > MAX_BLOCK_SIGOPS)
+        return error("CheckBlock() : too many nonstandard transactions");
 
     // Check merkleroot
     if (hashMerkleRoot != BuildMerkleTree())
@@ -1418,13 +1422,9 @@ bool CBlock::AcceptBlock()
     CBlockIndex* pindexPrev = (*mi).second;
     int nHeight = pindexPrev->nHeight+1;
 
-    // Check size
-    if (nHeight > 79400 && ::GetSerializeSize(*this, SER_NETWORK) > MAX_BLOCK_SIZE)
-        return error("AcceptBlock() : over size limit");
-
-    // Check that it's not full of nonstandard transactions
-    if (nHeight > 79400 && GetSigOpCount() > MAX_BLOCK_SIGOPS)
-        return error("AcceptBlock() : too many nonstandard transactions");
+    // Check proof of work
+    if (nBits != GetNextWorkRequired(pindexPrev))
+        return error("AcceptBlock() : incorrect proof of work");
 
     // Check timestamp against prev
     if (GetBlockTime() <= pindexPrev->GetMedianTimePast())
@@ -1435,10 +1435,6 @@ bool CBlock::AcceptBlock()
         if (!tx.IsFinal(nHeight, GetBlockTime()))
             return error("AcceptBlock() : contains a non-final transaction");
 
-    // Check proof of work
-    if (nBits != GetNextWorkRequired(pindexPrev))
-        return error("AcceptBlock() : incorrect proof of work");
-
     // Check that the block chain matches the known block chain up to a checkpoint
     if ((nHeight == 11111 && hash != uint256("0x0000000069e244f73d78e8fd29ba2fd2ed618bd6fa2ee92559f542fdb26e7c1d")) ||
         (nHeight == 33333 && hash != uint256("0x000000002dd5588a74784eaa7ab0507a18ad16a236e7b1ce69f00d7ddfb5d0a6")) ||
@@ -2415,6 +2411,12 @@ bool ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv)
         CWalletTx order;
         vRecv >> hashReply >> order;
 
+        if (!mapArgs.count("-allowreceivebyip") || mapArgs["-allowreceivebyip"] == "0")
+        {
+            pfrom->PushMessage("reply", hashReply, (int)2, string(""));
+            return true;
+        }
+
         /// we have a chance to check the order here
 
         // Keep giving the same key to the same ip until they use it
@@ -2435,6 +2437,12 @@ bool ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv)
         vRecv >> hashReply >> wtxNew;
         wtxNew.fFromMe = false;
 
+        if (!mapArgs.count("-allowreceivebyip") || mapArgs["-allowreceivebyip"] == "0")
+        {
+            pfrom->PushMessage("reply", hashReply, (int)2);
+            return true;
+        }
+
         // Broadcast
         if (!wtxNew.AcceptWalletTransaction())
         {
diff --git a/serialize.h b/serialize.h
index b3ab9b5e2..a88e312c8 100644
--- a/serialize.h
+++ b/serialize.h
@@ -23,7 +23,7 @@ class CAutoFile;
 static const unsigned int MAX_SIZE = 0x02000000;
 
 static const int VERSION = 312;
-static const char* pszSubVer = ".6";
+static const char* pszSubVer = ".7";
 
 
 
diff --git a/ui.cpp b/ui.cpp
index 7916f6775..80cf08841 100644
--- a/ui.cpp
+++ b/ui.cpp
@@ -2186,8 +2186,12 @@ void CSendingDialog::OnReply2(CDataStream& vRecv)
         if (nRet > 0)
         {
             string strMessage;
-            vRecv >> strMessage;
-            Error(_("Transfer was not accepted"));
+            if (!vRecv.empty())
+                vRecv >> strMessage;
+            if (nRet == 2)
+                Error(_("Recipient is not accepting transactions sent by IP address"));
+            else
+                Error(_("Transfer was not accepted"));
             //// todo: enlarge the window and enable a hidden white box to put seller's message
             return;
         }