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| author | Suhas Daftuar <sdaftuar@chaincode.com> | 2016-07-26 16:50:48 -0400 |
|---|---|---|
| committer | Wladimir J. van der Laan <laanwj@gmail.com> | 2016-07-29 08:27:57 +0200 |
| commit | b7e201181bcc0f6328e0a499803f1dbb2c2dbd28 (patch) | |
| tree | bc8796f62d43cf296cd9ca651dee5f26e999043e | |
| parent | 8360d5b37dd4d8248da0552de40e5ea1d17f51eb (diff) | |
| download | bitcoin-b7e201181bcc0f6328e0a499803f1dbb2c2dbd28.tar.xz | |
Prevent fingerprinting, disk-DoS with compact blocks
- Ignore GETBLOCKTXN requests for unknown blocks
Don't disconnect peers, or else we leak information that could be
used for fingerprinting.
- Ignore CMPCTBLOCK messages for pruned blocks
Also ignores CMPCTBLOCK announcements that have too little work. This is to
prevent disk-exhaustion DoS.
Github-Pull: #8408
Rebased-From: 1de2a46632946990a7863020b61172232f8c5796 1d06e49834814eed45e07393dcffd7b6683311b2
| -rw-r--r-- | src/main.cpp | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/src/main.cpp b/src/main.cpp index 70f0a42475..a80eb62126 100644 --- a/src/main.cpp +++ b/src/main.cpp @@ -5344,7 +5344,6 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv, BlockMap::iterator it = mapBlockIndex.find(req.blockhash); if (it == mapBlockIndex.end() || !(it->second->nStatus & BLOCK_HAVE_DATA)) { - Misbehaving(pfrom->GetId(), 100); LogPrintf("Peer %d sent us a getblocktxn for a block we don't have", pfrom->id); return true; } @@ -5628,8 +5627,8 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv, std::vector<CInv> vInv(1); vInv[0] = CInv(MSG_BLOCK, cmpctblock.header.GetHash()); pfrom->PushMessage(NetMsgType::GETDATA, vInv); - return true; } + return true; } // If we're not close to tip yet, give up and let parallel block fetch work its magic |