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-rw-r--r--src/main.cpp150
1 files changed, 96 insertions, 54 deletions
diff --git a/src/main.cpp b/src/main.cpp
index a3fe53b0e4..02062c3935 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1593,7 +1593,7 @@ static int64_t nTimeIndex = 0;
static int64_t nTimeCallbacks = 0;
static int64_t nTimeTotal = 0;
-bool ConnectBlock(CBlock& block, CValidationState& state, CBlockIndex* pindex, CCoinsViewCache& view, bool fJustCheck)
+bool ConnectBlock(const CBlock& block, CValidationState& state, CBlockIndex* pindex, CCoinsViewCache& view, bool fJustCheck)
{
AssertLockHeld(cs_main);
// Check it again in case a previous version let a bad block in
@@ -2336,6 +2336,73 @@ bool CheckBlock(const CBlock& block, CValidationState& state, bool fCheckPOW, bo
return true;
}
+bool ContextualCheckBlockHeader(const CBlockHeader& block, CValidationState& state, CBlockIndex * const pindexPrev)
+{
+ uint256 hash = block.GetHash();
+ if (hash == Params().HashGenesisBlock())
+ return true;
+
+ assert(pindexPrev);
+
+ int nHeight = pindexPrev->nHeight+1;
+
+ // Check proof of work
+ if ((!Params().SkipProofOfWorkCheck()) &&
+ (block.nBits != GetNextWorkRequired(pindexPrev, &block)))
+ return state.DoS(100, error("%s : incorrect proof of work", __func__),
+ REJECT_INVALID, "bad-diffbits");
+
+ // Check timestamp against prev
+ if (block.GetBlockTime() <= pindexPrev->GetMedianTimePast())
+ return state.Invalid(error("%s : block's timestamp is too early", __func__),
+ REJECT_INVALID, "time-too-old");
+
+ // Check that the block chain matches the known block chain up to a checkpoint
+ if (!Checkpoints::CheckBlock(nHeight, hash))
+ return state.DoS(100, error("%s : rejected by checkpoint lock-in at %d", __func__, nHeight),
+ REJECT_CHECKPOINT, "checkpoint mismatch");
+
+ // Don't accept any forks from the main chain prior to last checkpoint
+ CBlockIndex* pcheckpoint = Checkpoints::GetLastCheckpoint();
+ if (pcheckpoint && nHeight < pcheckpoint->nHeight)
+ return state.DoS(100, error("%s : forked chain older than last checkpoint (height %d)", __func__, nHeight));
+
+ // Reject block.nVersion=1 blocks when 95% (75% on testnet) of the network has upgraded:
+ if (block.nVersion < 2 &&
+ CBlockIndex::IsSuperMajority(2, pindexPrev, Params().RejectBlockOutdatedMajority()))
+ {
+ return state.Invalid(error("%s : rejected nVersion=1 block", __func__),
+ REJECT_OBSOLETE, "bad-version");
+ }
+
+ return true;
+}
+
+bool ContextualCheckBlock(const CBlock& block, CValidationState& state, CBlockIndex * const pindexPrev)
+{
+ const int nHeight = pindexPrev == NULL ? 0 : pindexPrev->nHeight + 1;
+
+ // Check that all transactions are finalized
+ BOOST_FOREACH(const CTransaction& tx, block.vtx)
+ if (!IsFinalTx(tx, nHeight, block.GetBlockTime())) {
+ return state.DoS(10, error("%s : contains a non-final transaction", __func__), REJECT_INVALID, "bad-txns-nonfinal");
+ }
+
+ // Enforce block.nVersion=2 rule that the coinbase starts with serialized block height
+ // if 750 of the last 1,000 blocks are version 2 or greater (51/100 if testnet):
+ if (block.nVersion >= 2 &&
+ CBlockIndex::IsSuperMajority(2, pindexPrev, Params().EnforceBlockUpgradeMajority()))
+ {
+ CScript expect = CScript() << nHeight;
+ if (block.vtx[0].vin[0].scriptSig.size() < expect.size() ||
+ !std::equal(expect.begin(), expect.end(), block.vtx[0].vin[0].scriptSig.begin())) {
+ return state.DoS(100, error("%s : block height mismatch in coinbase", __func__), REJECT_INVALID, "bad-cb-height");
+ }
+ }
+
+ return true;
+}
+
bool AcceptBlockHeader(const CBlockHeader& block, CValidationState& state, CBlockIndex** ppindex)
{
AssertLockHeld(cs_main);
@@ -2358,44 +2425,16 @@ bool AcceptBlockHeader(const CBlockHeader& block, CValidationState& state, CBloc
// Get prev block index
CBlockIndex* pindexPrev = NULL;
- int nHeight = 0;
if (hash != Params().HashGenesisBlock()) {
BlockMap::iterator mi = mapBlockIndex.find(block.hashPrevBlock);
if (mi == mapBlockIndex.end())
return state.DoS(10, error("%s : prev block not found", __func__), 0, "bad-prevblk");
pindexPrev = (*mi).second;
- nHeight = pindexPrev->nHeight+1;
-
- // Check proof of work
- if ((!Params().SkipProofOfWorkCheck()) &&
- (block.nBits != GetNextWorkRequired(pindexPrev, &block)))
- return state.DoS(100, error("%s : incorrect proof of work", __func__),
- REJECT_INVALID, "bad-diffbits");
-
- // Check timestamp against prev
- if (block.GetBlockTime() <= pindexPrev->GetMedianTimePast())
- return state.Invalid(error("%s : block's timestamp is too early", __func__),
- REJECT_INVALID, "time-too-old");
-
- // Check that the block chain matches the known block chain up to a checkpoint
- if (!Checkpoints::CheckBlock(nHeight, hash))
- return state.DoS(100, error("%s : rejected by checkpoint lock-in at %d", __func__, nHeight),
- REJECT_CHECKPOINT, "checkpoint mismatch");
-
- // Don't accept any forks from the main chain prior to last checkpoint
- CBlockIndex* pcheckpoint = Checkpoints::GetLastCheckpoint();
- if (pcheckpoint && nHeight < pcheckpoint->nHeight)
- return state.DoS(100, error("%s : forked chain older than last checkpoint (height %d)", __func__, nHeight));
-
- // Reject block.nVersion=1 blocks when 95% (75% on testnet) of the network has upgraded:
- if (block.nVersion < 2 &&
- CBlockIndex::IsSuperMajority(2, pindexPrev, Params().RejectBlockOutdatedMajority()))
- {
- return state.Invalid(error("%s : rejected nVersion=1 block", __func__),
- REJECT_OBSOLETE, "bad-version");
- }
}
+ if (!ContextualCheckBlockHeader(block, state, pindexPrev))
+ return false;
+
if (pindex == NULL)
pindex = AddToBlockIndex(block);
@@ -2420,7 +2459,7 @@ bool AcceptBlock(CBlock& block, CValidationState& state, CBlockIndex** ppindex,
return true;
}
- if (!CheckBlock(block, state)) {
+ if ((!CheckBlock(block, state)) || !ContextualCheckBlock(block, state, pindex->pprev)) {
if (state.IsInvalid() && !state.CorruptionPossible()) {
pindex->nStatus |= BLOCK_FAILED_VALID;
}
@@ -2429,27 +2468,6 @@ bool AcceptBlock(CBlock& block, CValidationState& state, CBlockIndex** ppindex,
int nHeight = pindex->nHeight;
- // Check that all transactions are finalized
- BOOST_FOREACH(const CTransaction& tx, block.vtx)
- if (!IsFinalTx(tx, nHeight, block.GetBlockTime())) {
- pindex->nStatus |= BLOCK_FAILED_VALID;
- return state.DoS(10, error("AcceptBlock() : contains a non-final transaction"),
- REJECT_INVALID, "bad-txns-nonfinal");
- }
-
- // Enforce block.nVersion=2 rule that the coinbase starts with serialized block height
- // if 750 of the last 1,000 blocks are version 2 or greater (51/100 if testnet):
- if (block.nVersion >= 2 &&
- CBlockIndex::IsSuperMajority(2, pindex->pprev, Params().EnforceBlockUpgradeMajority()))
- {
- CScript expect = CScript() << nHeight;
- if (block.vtx[0].vin[0].scriptSig.size() < expect.size() ||
- !std::equal(expect.begin(), expect.end(), block.vtx[0].vin[0].scriptSig.begin())) {
- pindex->nStatus |= BLOCK_FAILED_VALID;
- return state.DoS(100, error("AcceptBlock() : block height mismatch in coinbase"), REJECT_INVALID, "bad-cb-height");
- }
- }
-
// Write block to history file
try {
unsigned int nBlockSize = ::GetSerializeSize(block, SER_DISK, CLIENT_VERSION);
@@ -2560,6 +2578,30 @@ bool ProcessNewBlock(CValidationState &state, CNode* pfrom, CBlock* pblock, CDis
return true;
}
+bool TestBlockValidity(CValidationState &state, const CBlock& block, CBlockIndex * const pindexPrev, bool fCheckPOW, bool fCheckMerkleRoot)
+{
+ AssertLockHeld(cs_main);
+ assert(pindexPrev == chainActive.Tip());
+
+ CCoinsViewCache viewNew(pcoinsTip);
+ CBlockIndex indexDummy(block);
+ indexDummy.pprev = pindexPrev;
+ indexDummy.nHeight = pindexPrev->nHeight + 1;
+
+ // NOTE: CheckBlockHeader is called by CheckBlock
+ if (!ContextualCheckBlockHeader(block, state, pindexPrev))
+ return false;
+ if (!CheckBlock(block, state, fCheckPOW, fCheckMerkleRoot))
+ return false;
+ if (!ContextualCheckBlock(block, state, pindexPrev))
+ return false;
+ if (!ConnectBlock(block, state, &indexDummy, viewNew, true))
+ return false;
+ assert(state.IsValid());
+
+ return true;
+}
+
generated by cgit v1.2.3 (git 2.26.2) at 2024-07-19 03:52:52 +0000