Bitcoin Core  26.99.0
P2P Digital Currency
chain.cpp
Go to the documentation of this file.
1 // Copyright (c) 2020-2022 The Bitcoin Core developers
2 // Distributed under the MIT software license, see the accompanying
3 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
4 
5 #include <chain.h>
7 #include <test/fuzz/fuzz.h>
8 #include <test/fuzz/util.h>
9 
10 #include <cstdint>
11 #include <optional>
12 #include <vector>
13 
15 {
16  FuzzedDataProvider fuzzed_data_provider(buffer.data(), buffer.size());
17  std::optional<CDiskBlockIndex> disk_block_index = ConsumeDeserializable<CDiskBlockIndex>(fuzzed_data_provider);
18  if (!disk_block_index) {
19  return;
20  }
21 
22  const uint256 zero{};
23  disk_block_index->phashBlock = &zero;
24  {
25  LOCK(::cs_main);
26  (void)disk_block_index->ConstructBlockHash();
27  (void)disk_block_index->GetBlockPos();
28  (void)disk_block_index->GetBlockTime();
29  (void)disk_block_index->GetBlockTimeMax();
30  (void)disk_block_index->GetMedianTimePast();
31  (void)disk_block_index->GetUndoPos();
32  (void)disk_block_index->HaveNumChainTxs();
33  (void)disk_block_index->IsValid();
34  }
35 
36  const CBlockHeader block_header = disk_block_index->GetBlockHeader();
37  (void)CDiskBlockIndex{*disk_block_index};
38  (void)disk_block_index->BuildSkip();
39 
40  LIMITED_WHILE(fuzzed_data_provider.ConsumeBool(), 10000) {
41  const BlockStatus block_status = fuzzed_data_provider.PickValueInArray({
56  });
57  if (block_status & ~BLOCK_VALID_MASK) {
58  continue;
59  }
60  WITH_LOCK(::cs_main, (void)disk_block_index->RaiseValidity(block_status));
61  }
62 
63  CBlockIndex block_index{block_header};
64  block_index.phashBlock = &zero;
65  (void)block_index.GetBlockHash();
66  (void)block_index.ToString();
67 }
BlockStatus
Definition: chain.h:88
@ BLOCK_VALID_CHAIN
Outputs do not overspend inputs, no double spends, coinbase output ok, no immature coinbase spends,...
Definition: chain.h:108
@ BLOCK_VALID_MASK
All validity bits.
Definition: chain.h:114
@ BLOCK_VALID_TRANSACTIONS
Only first tx is coinbase, 2 <= coinbase input script length <= 100, transactions valid,...
Definition: chain.h:104
@ BLOCK_VALID_SCRIPTS
Scripts & signatures ok. Implies all parents are either at least VALID_SCRIPTS, or are ASSUMED_VALID.
Definition: chain.h:111
@ BLOCK_VALID_RESERVED
Reserved (was BLOCK_VALID_HEADER).
Definition: chain.h:93
@ BLOCK_VALID_TREE
All parent headers found, difficulty matches, timestamp >= median previous, checkpoint.
Definition: chain.h:97
@ BLOCK_HAVE_UNDO
undo data available in rev*.dat
Definition: chain.h:118
@ BLOCK_HAVE_DATA
full block available in blk*.dat
Definition: chain.h:117
@ BLOCK_FAILED_CHILD
descends from failed block
Definition: chain.h:122
@ BLOCK_FAILED_MASK
Definition: chain.h:123
@ BLOCK_FAILED_VALID
stage after last reached validness failed
Definition: chain.h:121
@ BLOCK_OPT_WITNESS
block data in blk*.dat was received with a witness-enforcing client
Definition: chain.h:125
@ BLOCK_HAVE_MASK
Definition: chain.h:119
@ BLOCK_VALID_UNKNOWN
Unused.
Definition: chain.h:90
Nodes collect new transactions into a block, hash them into a hash tree, and scan through nonce value...
Definition: block.h:22
The block chain is a tree shaped structure starting with the genesis block at the root,...
Definition: chain.h:150
void BuildSkip()
Build the skiplist pointer for this entry.
Definition: chain.cpp:125
Used to marshal pointers into hashes for db storage.
Definition: chain.h:385
T PickValueInArray(const T(&array)[size])
256-bit opaque blob.
Definition: uint256.h:106
RecursiveMutex cs_main
Mutex to guard access to validation specific variables, such as reading or changing the chainstate.
Definition: cs_main.cpp:8
#define LIMITED_WHILE(condition, limit)
Can be used to limit a theoretically unbounded loop.
Definition: fuzz.h:23
#define LOCK(cs)
Definition: sync.h:257
#define WITH_LOCK(cs, code)
Run code while locking a mutex.
Definition: sync.h:301
FUZZ_TARGET(chain)
Definition: chain.cpp:14