text: #!/usr/bin/env python3
  # Copyright (c) 2016-2017 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 the dumpwallet RPC."""
  
  import os
  
  from test_framework.test_framework import GamefragTestFramework
  from test_framework.util import (assert_equal, assert_raises_rpc_error)
  
  
  def read_dump(file_name, addrs, hd_master_addr_old):
      """
      Read the given dump, count the addrs that match, count change and reserve.
      Also check that the old hd_master is inactive
      """
      with open(file_name, encoding='utf8') as inputfile:
          found_addr = 0
          found_addr_chg = 0
          found_addr_rsv = 0
          hd_master_addr_ret = None
          for line in inputfile:
              # only read non comment lines
              if line[0] != "#" and len(line) > 10:
                  # split out some data
                  key_date_label, comment = line.split("#")
                  key_date_label = key_date_label.split(" ")
  
                  date = key_date_label[1]
                  keytype = key_date_label[2]
  
                  imported_key = date == '1970-01-01T00:00:01Z'
                  if imported_key:
                      # Imported keys have multiple addresses, no label (keypath) and timestamp
                      # Skip them
                      continue
  
                  addr_keypath = comment.split(" addr=")[1]
                  addr = addr_keypath.split(" ")[0]
                  keypath = None
  
                  if keytype == "hdseed=1":
                      # ensure we have generated a new hd master key
                      assert hd_master_addr_old != addr
                      hd_master_addr_ret = addr
                  elif keytype == "script=1":
                      # scripts don't have keypaths
                      keypath = None
                  else:
                      keypath = addr_keypath.rstrip().split("hdkeypath=")[1]
  
                  # count key types
                  for addrObj in addrs:
                      if addrObj['address'] == addr.split(",")[0] and addrObj['hdkeypath'] == keypath and keytype == "label=":
                          if addr.startswith('x') or addr.startswith('y'):
                              # P2PKH address
                              found_addr += 1
                          # else: todo: add staking/anonymous addresses here
                          break
                      elif keytype == "change=1":
                          found_addr_chg += 1
                          break
                      elif keytype == "reserve=1":
                          found_addr_rsv += 1
                          break
  
          return found_addr, found_addr_chg, found_addr_rsv, hd_master_addr_ret
  
  
  class WalletDumpTest(GamefragTestFramework):
      def set_test_params(self):
          self.num_nodes = 1
          self.extra_args = [["-keypool=90"]]
          self.rpc_timewait = 90
  
      def setup_network(self, split=False):
          # Use 1 minute timeout because the initial getnewaddress RPC can take
          # longer than the default 30 seconds due to an expensive
          # CWallet::TopUpKeyPool call, and the encryptwallet RPC made later in
          # the test often takes even longer.
          self.add_nodes(self.num_nodes, self.extra_args)
          self.start_nodes()
  
      def run_test (self):
          tmpdir = self.options.tmpdir
  
          # generate 20 addresses to compare against the dump
          test_addr_count = 20
          addrs = []
          for i in range(0,test_addr_count):
              addr = self.nodes[0].getnewaddress()
              vaddr = self.nodes[0].getaddressinfo(addr)  # required to get hd keypath
              addrs.append(vaddr)
          # Should be a no-op:
          self.nodes[0].keypoolrefill()
  
          # dump unencrypted wallet
          dumpUnencrypted = os.path.join(tmpdir, "node0", "wallet.unencrypted.dump")
          result = self.nodes[0].dumpwallet(dumpUnencrypted)
          assert_equal(result['filename'], os.path.abspath(dumpUnencrypted))
  
          found_addr, found_addr_chg, found_addr_rsv, hd_master_addr_unenc = \
              read_dump(dumpUnencrypted, addrs, None)
          assert_equal(found_addr, test_addr_count)  # all keys must be in the dump
          assert_equal(found_addr_chg, 50)  # 50 blocks where mined
          assert_equal(found_addr_rsv, 90 * 3)  # 90 keys external plus 100% internal keys plus 100% staking keys
  
          #encrypt wallet, restart, unlock and dump
          self.nodes[0].node_encrypt_wallet('test')
          self.start_node(0)
          self.nodes[0].walletpassphrase('test', 10)
          # Should be a no-op:
          self.nodes[0].keypoolrefill()
          dumpEncrypted = os.path.join(tmpdir, "node0", "wallet.encrypted.dump")
          self.nodes[0].dumpwallet(dumpEncrypted)
  
          found_addr, found_addr_chg, found_addr_rsv, hd_master_addr_enc = \
              read_dump(dumpEncrypted, addrs, hd_master_addr_unenc)
          assert_equal(found_addr, test_addr_count)
          assert_equal(found_addr_chg, 90 * 3 + 1 + 50)  # old reserve keys are marked as change now. todo: The +1 needs to be removed once this is updated (master seed taken as an internal key)
          assert_equal(found_addr_rsv, 90 * 3) # 90 external + 90 internal + 90 staking
  
          # Overwriting should fail
          assert_raises_rpc_error(-8, "already exists", self.nodes[0].dumpwallet, dumpUnencrypted)
  
          # Keyword matching should fail
          assert_raises_rpc_error(-1, "Scam attempt detected!", self.nodes[0].dumpwallet, "debug")
          assert_raises_rpc_error(-1, "Scam attempt detected!", self.nodes[0].dumpwallet, "wallet.log")
  
  if __name__ == '__main__':
      WalletDumpTest().main ()
  