def get_block_header(self, node, target_block_hash):
target_block = node.getblock(target_block_hash, 2)
block = CBlockHeader(is_part=True)
block.nTime = target_block['time']
block.hashPrevBlock = int(target_block['previousblockhash'], 16)
block.nVersion = target_block['version']
block.nBits = int(target_block['bits'], 16)
block.hashMerkleRoot = int(target_block['merkleroot'], 16)
block.hashWitnessMerkleRoot = int(target_block['witnessmerkleroot'], 16)
block.calc_sha256()
return block
def create_block_header(self, node, hashPrevBlock, hashMerkleRoot, target_block_hash):
target_block = node.getblock(target_block_hash, 2)
block = CBlockHeader(is_part=True)
block.nTime = target_block['time']
block.hashPrevBlock = hashPrevBlock
block.nVersion = target_block['version']
block.nBits = int(target_block['bits'], 16) # Will break after a difficulty adjustment...
block.hashMerkleRoot = hashMerkleRoot
block.hashWitnessMerkleRoot = 0
#block.vchBlockSig = b"x" * 1024
#block.hashMerkleRoot = block.calc_merkle_root()
block.calc_sha256()
return block
def run_test(self):
self.log.info("Read headers data")
self.headers_file_path = os.path.join(
os.path.dirname(os.path.realpath(__file__)), self.options.datafile)
with open(self.headers_file_path, encoding='utf-8') as headers_data:
h_lines = [l.strip() for l in headers_data.readlines()]
# The headers data is taken from testnet3 for early blocks from genesis until the first checkpoint. There are
# two headers with valid POW at height 1 and 2, forking off from genesis. They are indicated by the FORK_PREFIX.
FORK_PREFIX = 'fork:'
self.headers = [l for l in h_lines if not l.startswith(FORK_PREFIX)]
self.headers_fork = [
l[len(FORK_PREFIX):] for l in h_lines if l.startswith(FORK_PREFIX)
]
self.headers = [from_hex(CBlockHeader(), h) for h in self.headers]
self.headers_fork = [
from_hex(CBlockHeader(), h) for h in self.headers_fork
]
self.log.info(
"Feed all non-fork headers, including and up to the first checkpoint"
)
peer_checkpoint = self.nodes[0].add_outbound_p2p_connection(
P2PInterface(), p2p_idx=0)
peer_checkpoint.send_and_ping(msg_headers(self.headers))
assert {
'height': 546,
'hash':
'000000002a936ca763904c3c35fce2f3556c559c0214345d31b1bcebf76acb70',
'branchlen': 546,
'status': 'headers-only',
} in self.nodes[0].getchaintips()
self.log.info("Feed all fork headers (fails due to checkpoint)")
with self.nodes[0].assert_debug_log(['bad-fork-prior-to-checkpoint']):
peer_checkpoint.send_message(msg_headers(self.headers_fork))
peer_checkpoint.wait_for_disconnect()
self.log.info("Feed all fork headers (succeeds without checkpoint)")
# On node 0 it succeeds because checkpoints are disabled
self.restart_node(0,
extra_args=['-nocheckpoints', "-minimumchainwork=0"])
peer_no_checkpoint = self.nodes[0].add_outbound_p2p_connection(
P2PInterface(), p2p_idx=0)
peer_no_checkpoint.send_and_ping(msg_headers(self.headers_fork))
assert {
"height": 2,
"hash":
"00000000b0494bd6c3d5ff79c497cfce40831871cbf39b1bc28bd1dac817dc39",
"branchlen": 2,
"status": "headers-only",
} in self.nodes[0].getchaintips()
# On node 1 it succeeds because no checkpoint has been reached yet by a chain tip
peer_before_checkpoint = self.nodes[1].add_outbound_p2p_connection(
P2PInterface(), p2p_idx=1)
peer_before_checkpoint.send_and_ping(msg_headers(self.headers_fork))
assert {
"height": 2,
"hash":
"00000000b0494bd6c3d5ff79c497cfce40831871cbf39b1bc28bd1dac817dc39",
"branchlen": 2,
"status": "headers-only",
} in self.nodes[1].getchaintips()
self.log.info(
"Feed checkpoint-violating block (succeeds up until the checkpoint mismatch, then fails)"
)
block = CBlockHeader(self.headers_fork[-1])
headers_fork2 = []
for time_offset, nonce in (
(3, 0x023ec36d),
(3, 0x9e4f929b),
(0, 0x8bb04400),
(3, 0x31bbae20),
(0, 0xd53e5028),
(2, 0x7841f4e3),
(5, 0x7a8990a4),
(2, 0x489e28a1),
(1, 0x68bdb61a),
(-1, 0xf6d2a9fb),
(5, 0x487dcf25),
(3, 0x546da3d4),
(4, 0xc1f844d2),
(3, 0x0c086f6f),
(0, 0xc2321e55),
(6, 0xde1aa13c),
(0, 0x05227358),
(4, 0x5e021e88),
(1, 0xab2a18ae),
(8, 0x80c58047),
(5, 0xfaed66b9),
(4, 0x85e64899),
(6, 0x3a0de669),
(1, 0x5c519d58),
(4, 0x992f74d0),
(4, 0xf9eb3bef),
(4, 0x07673e35),
(5, 0x21b99d08),
(3, 0xef38d256),
(2, 0xa4f1dc1b),
(1, 0x2c8a4530),
(0, 0x2b5ea5b4),
(6, 0xf2284fc5),
(0, 0x1dfbd513),
(0, 0x0b17a886),
(2, 0x0bc3f397),
(0, 0x22cc4db0),
(9, 0x297d6621),
(1, 0xa6ae996b),
(0, 0x48749a3f),
(0, 0x989bf1a2),
(6, 0xa052d387),
(1, 0x9e2f6137),
(3, 0x6a0be10c),
(1, 0xef64e362),
(4, 0xce516de6),
(0, 0x2d077f41),
(1, 0x6188fb5d),
(3, 0xa72b0388),
(2, 0xd1065e3b),
(0, 0x73641cc7),
(4, 0xa667e807),
(3, 0x343f4941),
(2, 0xe62c5e97),
(2, 0x64ccbe3f),
(2, 0x891494ce),
(2, 0x1a1593ba),
(1, 0x7fb3165c),
(3, 0x9210c30b),
(0, 0x221e0eb6),
(2, 0x9e80023b),
(5, 0xb8981525),
(4, 0xa9eb35ed),
(0, 0x0cfe8f68),
(4, 0x31868c9d),
(0, 0xbc0fa60e),
(5, 0xcca64b21),
(0, 0x28a1f860),
(2, 0xbf629fb5),
(2, 0x4e0673ab),
(0, 0x8271fd15),
(2, 0x1d1ba6fd),
(1, 0xf8552431),
(1, 0x4a5847a3),
(2, 0x60e70a8b),
(0, 0x28e05674),
(1, 0x3a52baa0),
(4, 0x93cc4193),
(1, 0xb9e83452),
(-1, 0x02578099),
(6, 0xf1deecdb),
(3, 0xbfc713f0),
(1, 0xd42411c2),
(3, 0x2ff09457),
(4, 0xca26349a),
(5, 0x11e45b8a),
(2, 0x21861128),
(0, 0xc2f0cf4d),
(4, 0x8934b604),
(0, 0xcc822981),
(4, 0xef67ee2c),
(2, 0x940a8496),
(2, 0xd67ea903),
(3, 0xd6975b4c),
(1, 0x39d3775b),
(3, 0x33e2a45a),
(0, 0x43452dd5),
(5, 0xf0221dda),
(2, 0x24440716),
(1, 0x9c160e08),
(4, 0xd0e7252a),
(1, 0x447411d2),
(3, 0x958eaa10),
(-3, 0xb9c956ec),
(1, 0x5cd63c9c),
(1, 0x4af69deb),
(3, 0x90b93454),
(2, 0x17959b09),
(3, 0xb05154ec),
(0, 0x058f9e11),
(1, 0x227d9c1e),
(4, 0xacb7701f),
(4, 0x9542721f),
(2, 0x1e05aa42),
(1, 0x933d4365),
(1, 0xb5c3a67e),
(0, 0xac9cc6a6),
(1, 0x4a76055a),
(2, 0x7721afe9),
(5, 0xe12b457e),
(1, 0xaecdc119),
(0, 0xe8e4ca43),
(1, 0x6e42e836),
(1, 0x1d4dec49),
(1, 0xf8056d54),
(1, 0x584bccb8),
(1, 0x1932259b),
(0, 0xdf53ee37),
(0, 0x74e1f913),
(1, 0xc7d3a7e2),
(4, 0xef483c04),
(0, 0x60ad07f0),
(3, 0x89c790ea),
(0, 0xb7cadd7e),
(2, 0x38a82398),
(1, 0xfb93ea07),
(0, 0x200d8ecd),
(0, 0xf1339a41),
(3, 0x6af69ec7),
(3, 0xaffa785f),
(2, 0x67552c61),
(3, 0xec447684),
(0, 0xa28c3c1b),
(0, 0x1a3218f3),
(3, 0xc291da2c),
(0, 0x497d588f),
(3, 0x9fc4f865),
(0, 0x68070cc7),
(4, 0x9b7c0842),
(3, 0x3ea910ac),
(0, 0x5c793e79),
(3, 0x839fca4c),
(1, 0x16a801e7),
(0, 0x26ad46a3),
(2, 0x7709be6c),
(2, 0xc57d1b58),
(4, 0x9a4a49c1),
(4, 0xd59ee673),
(7, 0x8d1ded67),
(1, 0x9ddc3594),
(0, 0xf3af3d45),
(3, 0xbbb210be),
(0, 0xec262c80),
(4, 0x6731951b),
(0, 0xdc36282b),
(2, 0xae470ed2),
(1, 0x22c57186),
(1, 0xde307b71),
(4, 0x3d185e05),
(-3, 0x58d53609),
(1, 0xb25fc17d),
(2, 0x6c490b64),
(5, 0x03d05d9b),
(2, 0x3e84e2ce),
(0, 0x2c38303d),
(1, 0x487c092c),
(1, 0x23a3da6e),
(3, 0x2854a040),
(1, 0xa546be54),
(1, 0x50bfd84d),
(1, 0x6795f353),
(0, 0x82e77285),
(1, 0x24dd5aa3),
(1, 0x0563f0ea),
(2, 0xb2b9be8d),
(1, 0x54e70019),
(0, 0xb4a31d38),
(0, 0xfd3c816d),
(4, 0x84bfd3a7),
(3, 0x47ecc30d),
(2, 0x6e1caa0c),
(1, 0x47097b3e),
(0, 0x30316532),
(0, 0xca42b48d),
(6, 0xb5f05a80),
(5, 0xcf1f9c0f),
(1, 0xc7c9c0a0),
(7, 0xdce826fa),
(2, 0x92478133),
(0, 0xdeff31ab),
(2, 0xfeba362f),
(2, 0x143b78db),
(0, 0x48dfb442),
(1, 0x7b660255),
(0, 0x9b2d9613),
(0, 0xc81a0b46),
(5, 0xfa0257c2),
(0, 0xcb799eac),
(3, 0xe66885b5),
(0, 0xb7523b87),
(3, 0x80ec766e),
(0, 0xd3117846),
(4, 0x44d9d213),
(3, 0xf3540f37),
(0, 0x838a3b64),
(4, 0xd221d138),
(3, 0xa96e0947),
(1, 0xd09222da),
(1, 0x72071fec),
(0, 0x5424ae38),
(4, 0xbd5c3d49),
(4, 0x2d1be9ef),
(3, 0x31d8521d),
(3, 0x5f0ac290),
(0, 0x27710324),
(3, 0xc1cc6b58),
(0, 0xb1256275),
(0, 0x5473ced1),
(1, 0x35293898),
(0, 0x062a003f),
(3, 0xee177b2e),
(4, 0xbbb9235a),
(1, 0x183cebbe),
(3, 0xced4e55b),
(2, 0x8050c0fc),
(7, 0xe46e0207),
(2, 0xf23c4b96),
(-2, 0x2d7ec1f1),
(1, 0x90161c6d),
(8, 0x62d4b92f),
(1, 0x20086401),
(2, 0x2ce864a0),
(4, 0x317da57e),
(2, 0x2cc9250b),
(0, 0xf41ea979),
(1, 0xa50ca905),
(0, 0x4c0916bb),
(6, 0x45becd84),
(3, 0xdac6c807),
(0, 0xc88954d5),
(2, 0xf1ebf2b6),
(2, 0xa1e8f013),
(1, 0xb86af5b1),
(1, 0xc864d9f1),
(4, 0x5e91821b),
(5, 0x9b3ae958),
(0, 0x5c37debb),
(4, 0xf85e2180),
(1, 0x9de6eb5c),
(1, 0x51ec9650),
(0, 0xf3d31a0d),
(0, 0x127a4cad),
(2, 0x7698ee29),
(1, 0x63297ce6),
(1, 0xf9952a56),
(0, 0xb2bcdb59),
(2, 0xd904198f),
(1, 0xe0ceed57),
(2, 0xe883801f),
(0, 0x9c48eff1),
(2, 0x69bd1c00),
(0, 0xefb5c46c),
(1, 0x0ee6d904),
(0, 0xa01e4f15),
(0, 0xe50170fc),
(3, 0x1a057766),
(2, 0xffddd03e),
(1, 0x9842404d),
(0, 0xff3c892c),
(3, 0x468f2c36),
(2, 0xef3c2e4e),
(0, 0x72c0ea16),
(4, 0x815c722e),
(1, 0xe77dee42),
(0, 0xddd8b502),
(5, 0xf4d60169),
(0, 0x86b593af),
(0, 0x08cca2a5),
(4, 0x07652fb5),
(2, 0x19ead298),
(0, 0x94af6d52),
(2, 0x67955b19),
(0, 0xf579c469),
(0, 0x4b010360),
(0, 0x67bbba31),
(5, 0x2e47930e),
(1, 0xbc6872d8),
(3, 0x645621b8),
(1, 0xe2c5120b),
(0, 0xf3c50807),
(1, 0x6dcf4d07),
(1, 0xaeb4237d),
(1, 0x2a5f46a0),
(2, 0x4e8d3883),
(0, 0x48268869),
(0, 0x3bd2401a),
(6, 0x0bec238c),
(0, 0x262c5697),
(1, 0xbbf9572d),
(2, 0x37df6e6f),
(3, 0x2ce9e7f3),
(2, 0x9c0741b1),
(0, 0x8158c135),
(2, 0x007c8856),
(1, 0x6c59cc11),
(1, 0x2d77e50c),
(0, 0x43b85637),
(1, 0x37440748),
(4, 0x418b2692),
(4, 0x3bc8200e),
(3, 0x42e28d55),
(1, 0xadd84676),
(0, 0x2f58d608),
(4, 0xa252bf4e),
(5, 0x36365c0e),
(3, 0x22736e12),
(2, 0xac0e0e83),
(1, 0x30316f60),
(4, 0xedb2b98e),
(1, 0x46cd60ed),
(3, 0x8404d922),
(2, 0x0e230e16),
(1, 0xf2b50134),
(-1, 0x8e256fff),
(0, 0x80199c4d),
(1, 0x56e07a97),
(1, 0x2f9eed9a),
(0, 0xfb8a7055),
(3, 0xe3d02c6b),
(3, 0xd9b43b13),
(1, 0xe4faa52a),
(2, 0x270801f7),
(0, 0x5fa6a206),
(4, 0xa151f071),
(3, 0xd2848896),
(0, 0x3d5f905f),
(5, 0x499ae522),
(1, 0xc61d9839),
(5, 0xdd2f28b4),
(0, 0x7dc21c39),
(0, 0x57e1ab56),
(0, 0x42027d5a),
(6, 0x242a8813),
(4, 0x69fdcc57),
(3, 0xff7bd13a),
(2, 0x9a3b2839),
(5, 0x4af325ee),
(2, 0x58dea930),
(2, 0x202b57a4),
(764, 0xa39c30f0),
(3, 0x1ac08e2c),
(7, 0xa9263507),
(1, 0xb1c5602a),
(0, 0xf9716695),
(2, 0x8ce36f1c),
(1, 0xddf12292),
(4, 0xa22e830d),
(1, 0xb84c2e51),
(2, 0x3f6eb08c),
(0, 0x185ae643),
(0, 0x3b3ee340),
(5, 0x2f0bce41),
(5, 0x2c915d7c),
(4, 0xe0169c60),
(5, 0xc5b08211),
(0, 0x3f123b19),
(2, 0x443baa3f),
(0, 0x86e5bd6b),
(1, 0x728af7ae),
(2, 0x34cd4af0),
(1, 0x773b28fc),
(4, 0xb42fcf79),
(2, 0xcf4cddcd),
(3, 0x472c939d),
(1, 0xa2f66937),
(3, 0x9202dd5a),
(13, 0x87b4cbd0),
(16, 0x8d74ed44),
(1, 0xab0ec370),
(0, 0x4345bc72),
(3, 0x1663d4e8),
(54, 0x53304a20),
(14, 0xf3c7c0b5),
(1, 0xa755c4d5),
(0, 0xb4a4246d),
(3, 0xb55800f7),
(14, 0x80d85102),
(0, 0x98d4e5ac),
(1, 0x6f245269),
(13, 0x038c57c4),
(0, 0x86e5ac2e),
(1, 0x6c1963c6),
(0, 0x1adc14a1),
(3, 0x8f37ac31),
(18, 0x16fd4d32),
(15, 0xee5bbf16),
(13, 0xfba44c88),
(13, 0x4f6b4e47),
(14, 0xf9d7fe91),
(1, 0xe5e66769),
(1, 0x7ff9be17),
(1, 0xd53b2c20),
(3, 0xa48129e8),
(1, 0xca7692d9),
(1, 0x55067b69),
(0, 0xbae33993),
(0, 0x789a395c),
(0, 0xb2617974),
(1, 0xa49ae3ae),
(0, 0x52c934ba),
(4, 0x6ee4bde6),
(0, 0x083b4807),
(4, 0x382b6a26),
(1, 0x17f2e8d3),
(4, 0x70d17e03),
(4, 0x48bb565b),
(2, 0x437d655f),
(2, 0xece43c5f),
(0, 0xc06407f0),
(4, 0xabc4d27a),
(4, 0xf7162b9f),
(5, 0x97dc4313),
(4, 0x7c9578fa),
(4, 0xd38229e0),
(4, 0xc61a6e08),
(0, 0xc821347c),
(5, 0xbb37d0ab),
(4, 0x3e93a911),
(5, 0x3c03d85e),
(4, 0xb289102e),
(5, 0x5e42768e),
(4, 0x4c574f91),
(0, 0xc3531db9),
(5, 0x8ebbfe1b),
(2, 0x62de7520),
(4, 0x11def7c6),
(0, 0xd12a5839),
(4, 0xd60eb230),
(0, 0xfb6d0844),
(2, 0x701a5c56),
(1, 0x48998570),
(4, 0xcc786b3e),
(1, 0x8973807a),
(4, 0x77151b83),
(3, 0xb9b223a4),
(4, 0x7d213a8e),
(0, 0xe627ba6e),
(1, 0x2de15b60),
(0, 0x382c67c4),
(6, 0x43701b8e),
(8, 0x5f41b027),
(1, 0x09c5d515),
(1, 0x7fdaaf68),
(4, 0x8bf79290),
(3, 0x1a7c0271),
(0, 0x3562b3a1),
(4, 0x079aa703),
(1, 0x8fb1aace),
(4, 0xb02b8935),
(4, 0x939d1697),
(0, 0x7b2d7a80),
(4, 0x351c3288),
(5, 0x5f3dd388),
(1, 0xe865101a),
(0, 0x57871387),
(0, 0xd4fd6955),
(4, 0x86fe1cbb),
(0, 0x21296c24),
(4, 0x68f6d66d),
(3, 0x9ac3b10b),
(8, 0x659ebf23),
(0, 0x8e483006),
(5, 0x2821774f),
(4, 0x3b005030),
(1, 0x6bb6f09a),
(3, 0xb918ea6c),
(5, 0x259aca8a),
(1, 0x4bdaa577),
(3, 0x585e295b),
(2, 0xd7c04cca),
(6, 0x00a0f04d),
(3, 0x0cb7eda9),
(5, 0xb1d83641),
(4, 0xd1105e7d),
(2, 0xe8ad8382),
(3, 0x92df8405),
(4, 0xffb344bf),
(0, 0x94471661),
(-3, 0x0b9714a4),
(6, 0x87e08f18),
(6, 0xae594216),
(5, 0x51acdc5e),
(4, 0x83664747),
(0, 0x7b10c195),
(2, 0x1ef4426a),
(5, 0x1dbf29d0),
(2, 0xe9b85e89),
(3, 0x18611e1a),
(0, 0xa10966dd),
(0, 0xe54fad12),
(5, 0x03e6220d),
(3, 0x64fa4ada),
(4, 0x8facb4b4),
(2, 0xfc0dae5b),
(4, 0x61a98300),
(0, 0xd919ee25),
(3, 0x47d8f268),
(1, 0xd3d5250f),
(1, 0xa1b7d150),
(1, 0x39584b6a),
(1, 0xb730f059),
(0, 0x421a930a),
(0, 0xf4520724),
(2, 0xf51ac97e),
(1, 0x3a2e424f),
(5, 0x4488e824),
(5, 0x51f37f50),
(0, 0x2060682b),
(4, 0x668bcc70),
(0, 0x87bfad0d),
(3, 0x87a5e2be),
(3, 0xdb87b268),
(0, 0xbdc1bd9f),
(0, 0x9e97bae4),
(0, 0x5f8854cc),
(1, 0x6a54a576),
(0, 0x6abb7c6e),
(4, 0x3529e627),
(0, 0x2b17bf18),
(6, 0xe718bb6f),
(0, 0x2f8ca470),
(5, 0xabf106a3),
(4, 0x6f80543f),
(0, 0x7459d412),
):
block.hashPrevBlock = block.sha256
block.nTime += time_offset
block.nNonce = nonce
block.rehash()
headers_fork2.append(CBlockHeader(block))
with self.nodes[1].assert_debug_log(['checkpoint-mismatch']):
peer_before_checkpoint.send_message(msg_headers(headers_fork2))
peer_before_checkpoint.wait_for_disconnect()
assert {
"height": 545,
"hash":
"000000008ce04625549eb92726e39fe6de52cd44df861bbd477f9ada8bc30efc",
"branchlen": 545,
"status": "headers-only",
} in self.nodes[1].getchaintips()
