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morcos/5864.py

Last active August 29, 2015 14:16
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  1. morcos renamed this gist Mar 9, 2015. 1 changed file with 0 additions and 0 deletions.
    0 5684.py → 5864.py
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  2. morcos created this gist Mar 9, 2015.
    81 changes: 81 additions & 0 deletions 5684.py
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    Original file line number Diff line number Diff line change
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    #!/usr/bin/env python2
    # Copyright (c) 2014 The Bitcoin Core developers
    # Distributed under the MIT software license, see the accompanying
    # file COPYING or http://www.opensource.org/licenses/mit-license.php.

    #
    # Test reindex code on bad data
    #

    from test_framework import BitcoinTestFramework
    from bitcoinrpc.authproxy import AuthServiceProxy, JSONRPCException
    from util import *
    import io

    class ReindexTest(BitcoinTestFramework):

    def setup_network(self):
    self.nodes = []

    self.nodes.append(start_node(0, self.options.tmpdir, ["-debug"]))
    self.nodes.append(start_node(1, self.options.tmpdir, ["-debug"]))
    self.nodes.append(start_node(2, self.options.tmpdir, ["-debug"]))

    self.is_network_split = False

    def run_test(self):
    #node 0 mines 2 med sized blocks
    print "Node 0 mines 2 medium sized blocks"
    for j in range(2):
    for k in range(20):
    random_transaction(self.nodes[0:1], Decimal("1"), Decimal("0.0001"), 0, 0)
    self.nodes[0].setgenerate(True, 1)
    #node 1 mines 3 small sized blocks
    print "Node 1 mines 3 small sized blocks on another chain"
    for j in range(3):
    for k in range (3):
    random_transaction(self.nodes[1:2], Decimal("1"), Decimal("0.0001"), 0, 0)
    self.nodes[1].setgenerate(True, 1)
    print "Node 0 reorgs to node 1's chain"
    connect_nodes_bi(self.nodes, 0, 1)
    sync_blocks(self.nodes[0:2])

    print "Stop node 0 and munge its data, but only in the unused old stale blocks"
    stop_node(self.nodes[0],0)

    #munge node0's blk file
    filename = self.options.tmpdir+"/node0/regtest/blocks/blk00000.dat"
    with io.open(filename, 'r+b') as file:
    file.seek(40000) #This is somewhere around block 202
    file.write("\0\0\0\0\0\0\0\0\0\0\0\0")

    self.nodes[0]=start_node(0, self.options.tmpdir, ["-debug"])
    print "Starting node 0 again indicates no problem, see block count:"
    print self.nodes[0].getinfo()["blocks"]
    stop_node(self.nodes[0],0)

    print "Stopping/starting with reindex, displays no initial problem, see block count:"
    self.nodes[0]=start_node(0, self.options.tmpdir, ["-debug","-reindex"])
    print self.nodes[0].getinfo()["blocks"]

    connect_nodes_bi(self.nodes, 0, 1)

    print "But as more blocks are mined, some active chain blocks btwn (201-203) are overwritten"
    for j in range(2):
    for k in range (20):
    random_transaction(self.nodes[1:2], Decimal("1"), Decimal("0.0001"), 0, 0)
    print self.nodes[1].setgenerate(True, 1)

    print "Node 2 mines a longer fork starting at 200"
    self.nodes[2].setgenerate(True, 10)
    print "And it's impossible to reorg back to that point (also startup check would fail)"
    connect_nodes_bi(self.nodes, 1, 2)

    sync_blocks(self.nodes[0:3])

    print "block count node",1,self.nodes[1].getinfo()["blocks"]
    print "block count node",2,self.nodes[2].getinfo()["blocks"]
    print "block count node",0,self.nodes[0].getinfo()["blocks"]

    if __name__ == '__main__':
    ReindexTest().main()