Branch data Line data Source code
1 : : // Copyright (c) 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>
6 : : #include <chainparams.h>
7 : : #include <clientversion.h>
8 : : #include <node/blockstorage.h>
9 : : #include <node/context.h>
10 : : #include <node/kernel_notifications.h>
11 : : #include <script/solver.h>
12 : : #include <primitives/block.h>
13 : : #include <util/chaintype.h>
14 : : #include <validation.h>
15 : :
16 : : #include <boost/test/unit_test.hpp>
17 : : #include <test/util/logging.h>
18 : : #include <test/util/setup_common.h>
19 : :
20 : : using kernel::CBlockFileInfo;
21 : : using node::STORAGE_HEADER_BYTES;
22 : : using node::BlockManager;
23 : : using node::KernelNotifications;
24 : : using node::MAX_BLOCKFILE_SIZE;
25 : :
26 : : // use BasicTestingSetup here for the data directory configuration, setup, and cleanup
27 : : BOOST_FIXTURE_TEST_SUITE(blockmanager_tests, BasicTestingSetup)
28 : :
29 [ + - + - : 7 : BOOST_AUTO_TEST_CASE(blockmanager_find_block_pos)
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30 : : {
31 [ + - ]: 1 : const auto params {CreateChainParams(ArgsManager{}, ChainType::MAIN)};
32 [ - + - + ]: 1 : KernelNotifications notifications{Assert(m_node.shutdown_request), m_node.exit_status, *Assert(m_node.warnings)};
33 [ + - ]: 1 : const BlockManager::Options blockman_opts{
34 : 1 : .chainparams = *params,
35 : : .blocks_dir = m_args.GetBlocksDirPath(),
36 : : .notifications = notifications,
37 : : .block_tree_db_params = DBParams{
38 [ + - + - ]: 3 : .path = m_args.GetDataDirNet() / "blocks" / "index",
39 : : .cache_bytes = 0,
40 : : },
41 [ + - + - ]: 2 : };
42 [ - + + - : 1 : BlockManager blockman{*Assert(m_node.shutdown_signal), blockman_opts};
+ - ]
43 : : // simulate adding a genesis block normally
44 [ + - + - : 1 : BOOST_CHECK_EQUAL(blockman.WriteBlock(params->GenesisBlock(), 0).nPos, STORAGE_HEADER_BYTES);
+ - ]
45 : : // simulate what happens during reindex
46 : : // simulate a well-formed genesis block being found at offset 8 in the blk00000.dat file
47 : : // the block is found at offset 8 because there is an 8 byte serialization header
48 : : // consisting of 4 magic bytes + 4 length bytes before each block in a well-formed blk file.
49 [ + - ]: 1 : const FlatFilePos pos{0, STORAGE_HEADER_BYTES};
50 [ + - ]: 1 : blockman.UpdateBlockInfo(params->GenesisBlock(), 0, pos);
51 : : // now simulate what happens after reindex for the first new block processed
52 : : // the actual block contents don't matter, just that it's a block.
53 : : // verify that the write position is at offset 0x12d.
54 : : // this is a check to make sure that https://github.com/bitcoin/bitcoin/issues/21379 does not recur
55 : : // 8 bytes (for serialization header) + 285 (for serialized genesis block) = 293
56 : : // add another 8 bytes for the second block's serialization header and we get 293 + 8 = 301
57 [ + - ]: 1 : FlatFilePos actual{blockman.WriteBlock(params->GenesisBlock(), 1)};
58 [ + - + - ]: 1 : BOOST_CHECK_EQUAL(actual.nPos, STORAGE_HEADER_BYTES + ::GetSerializeSize(TX_WITH_WITNESS(params->GenesisBlock())) + STORAGE_HEADER_BYTES);
59 : 1 : }
60 : :
61 [ + - + - : 7 : BOOST_FIXTURE_TEST_CASE(blockmanager_scan_unlink_already_pruned_files, TestChain100Setup)
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62 : : {
63 : : // Cap last block file size, and mine new block in a new block file.
64 [ - + ]: 1 : auto& chainman{*Assert(m_node.chainman)};
65 : 1 : auto& blockman{chainman.m_blockman};
66 [ + - - + : 4 : const CBlockIndex* old_tip{WITH_LOCK(chainman.GetMutex(), return chainman.ActiveChain().Tip())};
+ - ]
67 [ + - + - ]: 3 : WITH_LOCK(chainman.GetMutex(), blockman.GetBlockFileInfo(old_tip->GetBlockPos().nFile)->nSize = MAX_BLOCKFILE_SIZE);
68 [ + - ]: 2 : CreateAndProcessBlock({}, GetScriptForRawPubKey(coinbaseKey.GetPubKey()));
69 : :
70 : : // Prune the older block file, but don't unlink it
71 : 1 : int file_number;
72 : 1 : {
73 : 1 : LOCK(chainman.GetMutex());
74 : 1 : file_number = old_tip->GetBlockPos().nFile;
75 [ + - ]: 1 : blockman.PruneOneBlockFile(file_number);
76 : 0 : }
77 : :
78 : 1 : const FlatFilePos pos(file_number, 0);
79 : :
80 : : // Check that the file is not unlinked after ScanAndUnlinkAlreadyPrunedFiles
81 : : // if m_have_pruned is not yet set
82 [ + - ]: 3 : WITH_LOCK(chainman.GetMutex(), blockman.ScanAndUnlinkAlreadyPrunedFiles());
83 [ + - + - : 2 : BOOST_CHECK(!blockman.OpenBlockFile(pos, true).IsNull());
+ - ]
84 : :
85 : : // Check that the file is unlinked after ScanAndUnlinkAlreadyPrunedFiles
86 : : // once m_have_pruned is set
87 : 1 : blockman.m_have_pruned = true;
88 [ + - ]: 3 : WITH_LOCK(chainman.GetMutex(), blockman.ScanAndUnlinkAlreadyPrunedFiles());
89 [ + - + - ]: 2 : BOOST_CHECK(blockman.OpenBlockFile(pos, true).IsNull());
90 : :
91 : : // Check that calling with already pruned files doesn't cause an error
92 [ + - ]: 3 : WITH_LOCK(chainman.GetMutex(), blockman.ScanAndUnlinkAlreadyPrunedFiles());
93 : :
94 : : // Check that the new tip file has not been removed
95 [ + - - + : 4 : const CBlockIndex* new_tip{WITH_LOCK(chainman.GetMutex(), return chainman.ActiveChain().Tip())};
+ - ]
96 [ + - ]: 1 : BOOST_CHECK_NE(old_tip, new_tip);
97 [ + - ]: 2 : const int new_file_number{WITH_LOCK(chainman.GetMutex(), return new_tip->GetBlockPos().nFile)};
98 : 1 : const FlatFilePos new_pos(new_file_number, 0);
99 [ + - + - ]: 2 : BOOST_CHECK(!blockman.OpenBlockFile(new_pos, true).IsNull());
100 : 1 : }
101 : :
102 [ + - + - : 7 : BOOST_FIXTURE_TEST_CASE(blockmanager_block_data_availability, TestChain100Setup)
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103 : : {
104 : : // The goal of the function is to return the first not pruned block in the range [upper_block, lower_block].
105 : 1 : LOCK(::cs_main);
106 : 1 : auto& chainman = m_node.chainman;
107 [ + - ]: 1 : auto& blockman = chainman->m_blockman;
108 [ + - ]: 1 : const CBlockIndex& tip = *chainman->ActiveTip();
109 : :
110 : : // Function to prune all blocks from 'last_pruned_block' down to the genesis block
111 : 2 : const auto& func_prune_blocks = [&](CBlockIndex* last_pruned_block)
112 : : {
113 : 1 : LOCK(::cs_main);
114 : 1 : CBlockIndex* it = last_pruned_block;
115 [ + + + - ]: 53 : while (it != nullptr && it->nStatus & BLOCK_HAVE_DATA) {
116 : 51 : it->nStatus &= ~BLOCK_HAVE_DATA;
117 : 51 : it = it->pprev;
118 : : }
119 : 1 : };
120 : :
121 : : // 1) Return genesis block when all blocks are available
122 [ + - + - : 2 : BOOST_CHECK_EQUAL(blockman.GetFirstBlock(tip, BLOCK_HAVE_DATA), chainman->ActiveChain()[0]);
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123 [ + - + - : 3 : BOOST_CHECK(blockman.CheckBlockDataAvailability(tip, *chainman->ActiveChain()[0]));
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124 : :
125 : : // 2) Check lower_block when all blocks are available
126 [ + - + - ]: 1 : CBlockIndex* lower_block = chainman->ActiveChain()[tip.nHeight / 2];
127 [ + - + - : 2 : BOOST_CHECK(blockman.CheckBlockDataAvailability(tip, *lower_block));
+ - + - ]
128 : :
129 : : // Prune half of the blocks
130 : 1 : int height_to_prune = tip.nHeight / 2;
131 [ + - + - ]: 1 : CBlockIndex* first_available_block = chainman->ActiveChain()[height_to_prune + 1];
132 : 1 : CBlockIndex* last_pruned_block = first_available_block->pprev;
133 [ + - ]: 1 : func_prune_blocks(last_pruned_block);
134 : :
135 : : // 3) The last block not pruned is in-between upper-block and the genesis block
136 [ + - + - : 1 : BOOST_CHECK_EQUAL(blockman.GetFirstBlock(tip, BLOCK_HAVE_DATA), first_available_block);
+ - ]
137 [ + - + - : 2 : BOOST_CHECK(blockman.CheckBlockDataAvailability(tip, *first_available_block));
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138 [ + - + - : 2 : BOOST_CHECK(!blockman.CheckBlockDataAvailability(tip, *last_pruned_block));
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139 : 1 : }
140 : :
141 [ + - + - : 7 : BOOST_FIXTURE_TEST_CASE(blockmanager_readblock_hash_mismatch, TestingSetup)
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142 : : {
143 : 1 : CBlockIndex index;
144 : 1 : {
145 : 1 : LOCK(cs_main);
146 [ + - ]: 1 : const auto tip{m_node.chainman->ActiveTip()};
147 : 1 : index.nStatus = tip->nStatus;
148 : 1 : index.nDataPos = tip->nDataPos;
149 [ + - ]: 1 : index.phashBlock = &uint256::ONE; // mismatched block hash
150 : 0 : }
151 : :
152 [ + - + - ]: 2 : ASSERT_DEBUG_LOG("GetHash() doesn't match index");
153 : 1 : CBlock block;
154 [ + - + - : 2 : BOOST_CHECK(!m_node.chainman->m_blockman.ReadBlock(block, index));
+ - ]
155 : 1 : }
156 : :
157 [ + - + - : 7 : BOOST_AUTO_TEST_CASE(blockmanager_flush_block_file)
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158 : : {
159 [ - + - + ]: 1 : KernelNotifications notifications{Assert(m_node.shutdown_request), m_node.exit_status, *Assert(m_node.warnings)};
160 : 1 : node::BlockManager::Options blockman_opts{
161 [ + - ]: 1 : .chainparams = Params(),
162 : : .blocks_dir = m_args.GetBlocksDirPath(),
163 : : .notifications = notifications,
164 : : .block_tree_db_params = DBParams{
165 [ + - + - ]: 3 : .path = m_args.GetDataDirNet() / "blocks" / "index",
166 : : .cache_bytes = 0,
167 : : },
168 [ + - + - ]: 2 : };
169 [ - + + - : 1 : BlockManager blockman{*Assert(m_node.shutdown_signal), blockman_opts};
+ - ]
170 : :
171 : : // Test blocks with no transactions, not even a coinbase
172 : 1 : CBlock block1;
173 : 1 : block1.nVersion = 1;
174 : 1 : CBlock block2;
175 : 1 : block2.nVersion = 2;
176 : 1 : CBlock block3;
177 : 1 : block3.nVersion = 3;
178 : :
179 : : // They are 80 bytes header + 1 byte 0x00 for vtx length
180 : 1 : constexpr int TEST_BLOCK_SIZE{81};
181 : :
182 : : // Blockstore is empty
183 [ + - + - : 1 : BOOST_CHECK_EQUAL(blockman.CalculateCurrentUsage(), 0);
+ - ]
184 : :
185 : : // Write the first block to a new location.
186 [ + - ]: 1 : FlatFilePos pos1{blockman.WriteBlock(block1, /*nHeight=*/1)};
187 : :
188 : : // Write second block
189 [ + - ]: 1 : FlatFilePos pos2{blockman.WriteBlock(block2, /*nHeight=*/2)};
190 : :
191 : : // Two blocks in the file
192 [ + - + - : 1 : BOOST_CHECK_EQUAL(blockman.CalculateCurrentUsage(), (TEST_BLOCK_SIZE + STORAGE_HEADER_BYTES) * 2);
+ - ]
193 : :
194 : : // First two blocks are written as expected
195 : : // Errors are expected because block data is junk, thrown AFTER successful read
196 : 1 : CBlock read_block;
197 [ + - + - ]: 1 : BOOST_CHECK_EQUAL(read_block.nVersion, 0);
198 : 1 : {
199 [ + - + - ]: 2 : ASSERT_DEBUG_LOG("Errors in block header");
200 [ + - + - : 2 : BOOST_CHECK(!blockman.ReadBlock(read_block, pos1, {}));
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201 [ + - + - ]: 1 : BOOST_CHECK_EQUAL(read_block.nVersion, 1);
202 : 1 : }
203 : 1 : {
204 [ + - + - ]: 2 : ASSERT_DEBUG_LOG("Errors in block header");
205 [ + - + - : 2 : BOOST_CHECK(!blockman.ReadBlock(read_block, pos2, {}));
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206 [ + - + - ]: 1 : BOOST_CHECK_EQUAL(read_block.nVersion, 2);
207 : 1 : }
208 : :
209 : : // During reindex, the flat file block storage will not be written to.
210 : : // UpdateBlockInfo will, however, update the blockfile metadata.
211 : : // Verify this behavior by attempting (and failing) to write block 3 data
212 : : // to block 2 location.
213 [ + - ]: 1 : CBlockFileInfo* block_data = blockman.GetBlockFileInfo(0);
214 [ + - + - ]: 1 : BOOST_CHECK_EQUAL(block_data->nBlocks, 2);
215 [ + - ]: 1 : blockman.UpdateBlockInfo(block3, /*nHeight=*/3, /*pos=*/pos2);
216 : : // Metadata is updated...
217 [ + - + - ]: 1 : BOOST_CHECK_EQUAL(block_data->nBlocks, 3);
218 : : // ...but there are still only two blocks in the file
219 [ + - + - : 1 : BOOST_CHECK_EQUAL(blockman.CalculateCurrentUsage(), (TEST_BLOCK_SIZE + STORAGE_HEADER_BYTES) * 2);
+ - ]
220 : :
221 : : // Block 2 was not overwritten:
222 [ + - + - : 2 : BOOST_CHECK(!blockman.ReadBlock(read_block, pos2, {}));
+ - + - ]
223 [ + - + - ]: 1 : BOOST_CHECK_EQUAL(read_block.nVersion, 2);
224 : 1 : }
225 : :
226 : : BOOST_AUTO_TEST_SUITE_END()
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