p2pool/main.py

   1 #!/usr/bin/python
   2
   3 from __future__ import division
   4
   5 import argparse
   6 import datetime
   7 import itertools
   8 import os
   9 import random
  10 import sqlite3
  11 import struct
  12 import sys
  13 import time
  14 import json
  15 import signal
  16 import traceback
  17
  18 from twisted.internet import defer, reactor, task
  19 from twisted.web import server, resource
  20 from twisted.python import log
  21 from nattraverso import portmapper, ipdiscover
  22
  23 import bitcoin.p2p, bitcoin.getwork, bitcoin.data
  24 from util import db, expiring_dict, jsonrpc, variable, deferral, math
  25 from . import p2p, worker_interface, skiplists
  26 import p2pool.data as p2pool
  27 import p2pool as p2pool_init
  28
  29 @deferral.retry('Error getting work from bitcoind:', 3)
  30 @defer.inlineCallbacks
  31 def getwork(bitcoind, ht, net):
  32     try:
  33         work = yield bitcoind.rpc_getmemorypool()
  34         defer.returnValue(dict(
  35             version=work['version'],
  36             previous_block_hash=int(work['previousblockhash'], 16),
  37             transactions=[bitcoin.data.tx_type.unpack(x.decode('hex')) for x in work['transactions']],
  38             subsidy=work['coinbasevalue'],
  39             time=work['time'],
  40             target=bitcoin.data.FloatingIntegerType().unpack(work['bits'].decode('hex')[::-1]) if isinstance(work['bits'], (str, unicode)) else bitcoin.data.FloatingInteger(work['bits']),
  41         ))
  42     except jsonrpc.Error, e:
  43         if e.code != -32601:
  44             raise
  45
  46         print "---> Update your bitcoind to support the 'getmemorypool' RPC call. Not including transactions in generated blocks! <---"
  47         work = bitcoin.getwork.BlockAttempt.from_getwork((yield bitcoind.rpc_getwork()))
  48         try:
  49             subsidy = net.BITCOIN_SUBSIDY_FUNC(ht.getHeight(work.previous_block))
  50         except ValueError:
  51             subsidy = net.BITCOIN_SUBSIDY_FUNC(1000)
  52
  53         defer.returnValue(dict(
  54             version=work.version,
  55             previous_block_hash=work.previous_block,
  56             transactions=[],
  57             subsidy=subsidy,
  58             time=work.timestamp,
  59             target=work.block_target,
  60         ))
  61
  62 @deferral.retry('Error getting payout script from bitcoind:', 1)
  63 @defer.inlineCallbacks
  64 def get_payout_script(factory):
  65     res = yield (yield factory.getProtocol()).check_order(order=bitcoin.p2p.Protocol.null_order)
  66     if res['reply'] == 'success':
  67         defer.returnValue(res['script'])
  68     elif res['reply'] == 'denied':
  69         defer.returnValue(None)
  70     else:
  71         raise ValueError('Unexpected reply: %r' % (res,))
  72
  73 @deferral.retry('Error creating payout script:', 10)
  74 @defer.inlineCallbacks
  75 def get_payout_script2(bitcoind, net):
  76     defer.returnValue(bitcoin.data.pubkey_hash_to_script2(bitcoin.data.address_to_pubkey_hash((yield bitcoind.rpc_getaccountaddress('p2pool')), net)))
  77
  78 @defer.inlineCallbacks
  79 def main(args):
  80     try:
  81         print 'p2pool (version %s)' % (p2pool_init.__version__,)
  82         print
  83         try:
  84             from . import draw
  85         except ImportError:
  86             draw = None
  87             print "Install Pygame and PIL to enable visualizations! Visualizations disabled."
  88             print
  89
  90         # connect to bitcoind over JSON-RPC and do initial getwork
  91         url = 'http://%s:%i/' % (args.bitcoind_address, args.bitcoind_rpc_port)
  92         print '''Testing bitcoind RPC connection to '%s' with username '%s'...''' % (url, args.bitcoind_rpc_username)
  93         bitcoind = jsonrpc.Proxy(url, (args.bitcoind_rpc_username, args.bitcoind_rpc_password))
  94         good = yield deferral.retry('Error while checking bitcoind identity:', 1)(args.net.BITCOIN_RPC_CHECK)(bitcoind)
  95         if not good:
  96             print "    Check failed! Make sure that you're connected to the right bitcoind with --bitcoind-rpc-port!"
  97             return
  98         temp_work = yield deferral.retry('Error while testing getwork:', 1)(defer.inlineCallbacks(lambda: defer.returnValue(bitcoin.getwork.BlockAttempt.from_getwork((yield bitcoind.rpc_getwork())))))()
  99         print '    ...success!'
 100         print '    Current block hash: %x' % (temp_work.previous_block,)
 101         print
 102
 103         # connect to bitcoind over bitcoin-p2p and do checkorder to get pubkey to send payouts to
 104         print '''Testing bitcoind P2P connection to '%s:%s'...''' % (args.bitcoind_address, args.bitcoind_p2p_port)
 105         factory = bitcoin.p2p.ClientFactory(args.net)
 106         reactor.connectTCP(args.bitcoind_address, args.bitcoind_p2p_port, factory)
 107         my_script = yield get_payout_script(factory)
 108         if args.pubkey_hash is None:
 109             if my_script is None:
 110                 print '    IP transaction denied ... falling back to sending to address.'
 111                 my_script = yield get_payout_script2(bitcoind, args.net)
 112         else:
 113             my_script = bitcoin.data.pubkey_hash_to_script2(args.pubkey_hash)
 114         print '    ...success!'
 115         print '    Payout script:', bitcoin.data.script2_to_human(my_script, args.net)
 116         print
 117
 118         print 'Loading cached block headers...'
 119         ht = bitcoin.p2p.HeightTracker(factory, args.net.NAME + '_headers.dat')
 120         print '   ...done loading %i cached block headers.' % (len(ht.tracker.shares),)
 121         print
 122
 123         tracker = p2pool.OkayTracker(args.net)
 124         ss = p2pool.ShareStore(os.path.join(os.path.dirname(sys.argv[0]), args.net.NAME + '_shares.'), args.net)
 125         known_verified = set()
 126         print "Loading shares..."
 127         for i, (mode, contents) in enumerate(ss.get_shares()):
 128             if mode == 'share':
 129                 if contents.hash in tracker.shares:
 130                     continue
 131                 contents.shared = True
 132                 contents.stored = True
 133                 contents.time_seen = 0
 134                 tracker.add(contents)
 135                 if len(tracker.shares) % 1000 == 0 and tracker.shares:
 136                     print "    %i" % (len(tracker.shares),)
 137             elif mode == 'verified_hash':
 138                 known_verified.add(contents)
 139             else:
 140                 raise AssertionError()
 141         print "    ...inserting %i verified shares..." % (len(known_verified),)
 142         for h in known_verified:
 143             if h not in tracker.shares:
 144                 ss.forget_verified_share(h)
 145                 continue
 146             tracker.verified.add(tracker.shares[h])
 147         print "    ...done loading %i shares!" % (len(tracker.shares),)
 148         print
 149         tracker.added.watch(lambda share: ss.add_share(share))
 150         tracker.verified.added.watch(lambda share: ss.add_verified_hash(share.hash))
 151         tracker.removed.watch(lambda share: ss.forget_share(share.hash))
 152         tracker.verified.removed.watch(lambda share: ss.forget_verified_share(share.hash))
 153
 154         peer_heads = expiring_dict.ExpiringDict(300) # hash -> peers that know of it
 155
 156         # information affecting work that should trigger a long-polling update
 157         current_work = variable.Variable(None)
 158         # information affecting work that should not trigger a long-polling update
 159         current_work2 = variable.Variable(None)
 160
 161         work_updated = variable.Event()
 162
 163         requested = expiring_dict.ExpiringDict(300)
 164
 165         @defer.inlineCallbacks
 166         def set_real_work1():
 167             work = yield getwork(bitcoind, ht, args.net)
 168             changed = work['previous_block_hash'] != current_work.value['previous_block'] if current_work.value is not None else True
 169             current_work.set(dict(
 170                 version=work['version'],
 171                 previous_block=work['previous_block_hash'],
 172                 target=work['target'],
 173                 best_share_hash=current_work.value['best_share_hash'] if current_work.value is not None else None,
 174                 aux_work=current_work.value['aux_work'] if current_work.value is not None else None,
 175             ))
 176             current_work2.set(dict(
 177                 transactions=work['transactions'],
 178                 subsidy=work['subsidy'],
 179                 clock_offset=time.time() - work['time'],
 180                 last_update=time.time(),
 181             ))
 182             if changed:
 183                 set_real_work2()
 184
 185         def set_real_work2():
 186             best, desired = tracker.think(ht, current_work.value['previous_block'], time.time() - current_work2.value['clock_offset'])
 187
 188             t = dict(current_work.value)
 189             t['best_share_hash'] = best
 190             current_work.set(t)
 191
 192             t = time.time()
 193             for peer2, share_hash in desired:
 194                 if share_hash not in tracker.tails: # was received in the time tracker.think was running
 195                     continue
 196                 last_request_time, count = requested.get(share_hash, (None, 0))
 197                 if last_request_time is not None and last_request_time - 5 < t < last_request_time + 10 * 1.5**count:
 198                     continue
 199                 potential_peers = set()
 200                 for head in tracker.tails[share_hash]:
 201                     potential_peers.update(peer_heads.get(head, set()))
 202                 potential_peers = [peer for peer in potential_peers if peer.connected2]
 203                 if count == 0 and peer2 is not None and peer2.connected2:
 204                     peer = peer2
 205                 else:
 206                     peer = random.choice(potential_peers) if potential_peers and random.random() > .2 else peer2
 207                     if peer is None:
 208                         continue
 209
 210                 print 'Requesting parent share %s from %s' % (p2pool.format_hash(share_hash), '%s:%i' % peer.addr)
 211                 peer.send_getshares(
 212                     hashes=[share_hash],
 213                     parents=2000,
 214                     stops=list(set(tracker.heads) | set(
 215                         tracker.get_nth_parent_hash(head, min(max(0, tracker.get_height_and_last(head)[0] - 1), 10)) for head in tracker.heads
 216                     ))[:100],
 217                 )
 218                 requested[share_hash] = t, count + 1
 219
 220         print 'Initializing work...'
 221         yield set_real_work1()
 222         set_real_work2()
 223         print '    ...success!'
 224         print
 225
 226         @defer.inlineCallbacks
 227         def set_merged_work():
 228             if not args.merged_url:
 229                 return
 230             while True:
 231                 merged = jsonrpc.Proxy(args.merged_url, (args.merged_userpass,))
 232                 auxblock = yield deferral.retry('Error while calling merged getauxblock:', 1)(merged.rpc_getauxblock)()
 233                 x = dict(current_work.value)
 234                 x['aux_work'] = dict(
 235                     hash=int(auxblock['hash'], 16),
 236                     target=bitcoin.data.HashType().unpack(auxblock['target'].decode('hex')),
 237                     chain_id=auxblock['chainid'],
 238                 )
 239                 #print x['aux_work']
 240                 current_work.set(x)
 241                 yield deferral.sleep(1)
 242         set_merged_work()
 243
 244         start_time = time.time() - current_work2.value['clock_offset']
 245
 246         # setup p2p logic and join p2pool network
 247
 248         def share_share(share, ignore_peer=None):
 249             for peer in p2p_node.peers.itervalues():
 250                 if peer is ignore_peer:
 251                     continue
 252                 #if p2pool_init.DEBUG:
 253                 #    print "Sending share %s to %r" % (p2pool.format_hash(share.hash), peer.addr)
 254                 peer.send_shares([share])
 255             share.flag_shared()
 256
 257         def p2p_shares(shares, peer=None):
 258             if len(shares) > 5:
 259                 print 'Processing %i shares...' % (len(shares),)
 260
 261             new_count = 0
 262             for share in shares:
 263                 if share.hash in tracker.shares:
 264                     #print 'Got duplicate share, ignoring. Hash: %s' % (p2pool.format_hash(share.hash),)
 265                     continue
 266
 267                 new_count += 1
 268
 269                 #print 'Received share %s from %r' % (p2pool.format_hash(share.hash), share.peer.addr if share.peer is not None else None)
 270
 271                 tracker.add(share)
 272
 273             if shares and peer is not None:
 274                 peer_heads.setdefault(shares[0].hash, set()).add(peer)
 275
 276             if new_count:
 277                 set_real_work2()
 278
 279             if len(shares) > 5:
 280                 print '... done processing %i shares. New: %i Have: %i/~%i' % (len(shares), new_count, len(tracker.shares), 2*args.net.CHAIN_LENGTH)
 281
 282         @tracker.verified.added.watch
 283         def _(share):
 284             if share.bitcoin_hash <= share.header['target']:
 285                 print
 286                 print 'GOT BLOCK! Passing to bitcoind! %s bitcoin: %x' % (p2pool.format_hash(share.hash), share.bitcoin_hash,)
 287                 print
 288                 if factory.conn.value is not None:
 289                     factory.conn.value.send_block(block=share.as_block(tracker, args.net))
 290                 else:
 291                     print 'No bitcoind connection! Erp!'
 292
 293         def p2p_share_hashes(share_hashes, peer):
 294             t = time.time()
 295             get_hashes = []
 296             for share_hash in share_hashes:
 297                 if share_hash in tracker.shares:
 298                     continue
 299                 last_request_time, count = requested.get(share_hash, (None, 0))
 300                 if last_request_time is not None and last_request_time - 5 < t < last_request_time + 10 * 1.5**count:
 301                     continue
 302                 print 'Got share hash, requesting! Hash: %s' % (p2pool.format_hash(share_hash),)
 303                 get_hashes.append(share_hash)
 304                 requested[share_hash] = t, count + 1
 305
 306             if share_hashes and peer is not None:
 307                 peer_heads.setdefault(share_hashes[0], set()).add(peer)
 308             if get_hashes:
 309                 peer.send_getshares(hashes=get_hashes, parents=0, stops=[])
 310
 311         def p2p_get_shares(share_hashes, parents, stops, peer):
 312             parents = min(parents, 1000//len(share_hashes))
 313             stops = set(stops)
 314             shares = []
 315             for share_hash in share_hashes:
 316                 for share in itertools.islice(tracker.get_chain_known(share_hash), parents + 1):
 317                     if share.hash in stops:
 318                         break
 319                     shares.append(share)
 320             print 'Sending %i shares to %s:%i' % (len(shares), peer.addr[0], peer.addr[1])
 321             peer.send_shares(shares, full=True)
 322
 323         print 'Joining p2pool network using TCP port %i...' % (args.p2pool_port,)
 324
 325         def parse(x):
 326             if ':' in x:
 327                 ip, port = x.split(':')
 328                 return ip, int(port)
 329             else:
 330                 return x, args.net.P2P_PORT
 331
 332         nodes = set([
 333             ('72.14.191.28', args.net.P2P_PORT),
 334             ('62.204.197.159', args.net.P2P_PORT),
 335             ('142.58.248.28', args.net.P2P_PORT),
 336             ('94.23.34.145', args.net.P2P_PORT),
 337         ])
 338         for host in [
 339             'p2pool.forre.st',
 340             'dabuttonfactory.com',
 341         ]:
 342             try:
 343                 nodes.add(((yield reactor.resolve(host)), args.net.P2P_PORT))
 344             except:
 345                 log.err(None, 'Error resolving bootstrap node IP:')
 346
 347         if args.net_name == 'litecoin':
 348             nodes.add(((yield reactor.resolve('liteco.in')), args.net.P2P_PORT))
 349
 350         p2p_node = p2p.Node(
 351             current_work=current_work,
 352             port=args.p2pool_port,
 353             net=args.net,
 354             addr_store=db.SQLiteDict(sqlite3.connect(os.path.join(os.path.dirname(sys.argv[0]), 'addrs.dat'), isolation_level=None), args.net.NAME),
 355             mode=0 if args.low_bandwidth else 1,
 356             preferred_addrs=set(map(parse, args.p2pool_nodes)) | nodes,
 357         )
 358         p2p_node.handle_shares = p2p_shares
 359         p2p_node.handle_share_hashes = p2p_share_hashes
 360         p2p_node.handle_get_shares = p2p_get_shares
 361
 362         p2p_node.start()
 363
 364         # send share when the chain changes to their chain
 365         def work_changed(new_work):
 366             #print 'Work changed:', new_work
 367             for share in tracker.get_chain_known(new_work['best_share_hash']):
 368                 if share.shared:
 369                     break
 370                 share_share(share, share.peer)
 371         current_work.changed.watch(work_changed)
 372
 373         print '    ...success!'
 374         print
 375
 376         @defer.inlineCallbacks
 377         def upnp_thread():
 378             while True:
 379                 try:
 380                     is_lan, lan_ip = yield ipdiscover.get_local_ip()
 381                     if is_lan:
 382                         pm = yield portmapper.get_port_mapper()
 383                         yield pm._upnp.add_port_mapping(lan_ip, args.p2pool_port, args.p2pool_port, 'p2pool', 'TCP') # XXX try to forward external correct port?
 384                 except defer.TimeoutError:
 385                     pass
 386                 except:
 387                     if p2pool_init.DEBUG:
 388                         log.err(None, "UPnP error:")
 389                 yield deferral.sleep(random.expovariate(1/120))
 390
 391         if args.upnp:
 392             upnp_thread()
 393
 394         # start listening for workers with a JSON-RPC server
 395
 396         print 'Listening for workers on port %i...' % (args.worker_port,)
 397
 398         # setup worker logic
 399
 400         merkle_root_to_transactions = expiring_dict.ExpiringDict(300)
 401         run_identifier = struct.pack('<I', random.randrange(2**32))
 402
 403         share_counter = skiplists.CountsSkipList(tracker, run_identifier)
 404         removed_unstales = set()
 405         def get_share_counts(doa=False):
 406             height, last = tracker.get_height_and_last(current_work.value['best_share_hash'])
 407             matching_in_chain = share_counter(current_work.value['best_share_hash'], max(0, height - 1)) | removed_unstales
 408             shares_in_chain = my_shares & matching_in_chain
 409             stale_shares = my_shares - matching_in_chain
 410             if doa:
 411                 stale_doa_shares = stale_shares & doa_shares
 412                 stale_not_doa_shares = stale_shares - stale_doa_shares
 413                 return len(shares_in_chain) + len(stale_shares), len(stale_doa_shares), len(stale_not_doa_shares)
 414             return len(shares_in_chain) + len(stale_shares), len(stale_shares)
 415         @tracker.verified.removed.watch
 416         def _(share):
 417             if share.hash in my_shares and tracker.is_child_of(share.hash, current_work.value['best_share_hash']):
 418                 removed_unstales.add(share.hash)
 419
 420         def compute(state, payout_script):
 421             if payout_script is None or random.uniform(0, 100) < args.worker_fee:
 422                 payout_script = my_script
 423             if state['best_share_hash'] is None and args.net.PERSIST:
 424                 raise jsonrpc.Error(-12345, u'p2pool is downloading shares')
 425             if len(p2p_node.peers) == 0 and args.net.PERSIST:
 426                 raise jsonrpc.Error(-12345, u'p2pool is not connected to any peers')
 427             if time.time() > current_work2.value['last_update'] + 60:
 428                 raise jsonrpc.Error(-12345, u'lost contact with bitcoind')
 429
 430             if state['aux_work'] is not None:
 431                 aux_str = '\xfa\xbemm' + bitcoin.data.HashType().pack(state['aux_work']['hash'])[::-1] + struct.pack('<ii', 1, 0)
 432             else:
 433                 aux_str = ''
 434
 435             # XXX assuming generate_tx is smallish here..
 436             def get_stale_frac():
 437                 shares, stale_shares = get_share_counts()
 438                 if shares == 0:
 439                     return ""
 440                 frac = stale_shares/shares
 441                 return 2*struct.pack('<H', int(65535*frac + .5))
 442             subsidy = current_work2.value['subsidy']
 443             generate_tx = p2pool.generate_transaction(
 444                 tracker=tracker,
 445                 previous_share_hash=state['best_share_hash'],
 446                 new_script=payout_script,
 447                 subsidy=subsidy,
 448                 nonce=run_identifier + struct.pack('<H', random.randrange(2**16)) + aux_str + get_stale_frac(),
 449                 block_target=state['target'],
 450                 net=args.net,
 451             )
 452             print 'New work for worker! Difficulty: %.06f Payout if block: %.6f %s Total block value: %.6f %s including %i transactions' % (0xffff*2**208/p2pool.coinbase_type.unpack(generate_tx['tx_ins'][0]['script'])['share_data']['target'], (generate_tx['tx_outs'][-1]['value']-subsidy//200)*1e-8, args.net.BITCOIN_SYMBOL, subsidy*1e-8, args.net.BITCOIN_SYMBOL, len(current_work2.value['transactions']))
 453             #print 'Target: %x' % (p2pool.coinbase_type.unpack(generate_tx['tx_ins'][0]['script'])['share_data']['target'],)
 454             #, have', shares.count(my_script) - 2, 'share(s) in the current chain. Fee:', sum(tx.value_in - tx.value_out for tx in extra_txs)/100000000
 455             transactions = [generate_tx] + list(current_work2.value['transactions'])
 456             merkle_root = bitcoin.data.merkle_hash(transactions)
 457             merkle_root_to_transactions[merkle_root] = transactions # will stay for 1000 seconds
 458
 459             timestamp = int(time.time() - current_work2.value['clock_offset'])
 460             if state['best_share_hash'] is not None:
 461                 timestamp2 = math.median((s.timestamp for s in itertools.islice(tracker.get_chain_to_root(state['best_share_hash']), 11)), use_float=False) + 1
 462                 if timestamp2 > timestamp:
 463                     print 'Toff', timestamp2 - timestamp
 464                     timestamp = timestamp2
 465             target2 = p2pool.coinbase_type.unpack(generate_tx['tx_ins'][0]['script'])['share_data']['target']
 466             times[p2pool.coinbase_type.unpack(generate_tx['tx_ins'][0]['script'])['share_data']['nonce']] = time.time()
 467             #print 'SENT', 2**256//p2pool.coinbase_type.unpack(generate_tx['tx_ins'][0]['script'])['share_data']['target']
 468             return bitcoin.getwork.BlockAttempt(state['version'], state['previous_block'], merkle_root, timestamp, state['target'], target2)
 469
 470         my_shares = set()
 471         doa_shares = set()
 472         times = {}
 473
 474         def got_response(data, user):
 475             try:
 476                 # match up with transactions
 477                 header = bitcoin.getwork.decode_data(data)
 478                 transactions = merkle_root_to_transactions.get(header['merkle_root'], None)
 479                 if transactions is None:
 480                     print '''Couldn't link returned work's merkle root with its transactions - should only happen if you recently restarted p2pool'''
 481                     return False
 482                 block = dict(header=header, txs=transactions)
 483                 hash_ = bitcoin.data.block_header_type.hash256(block['header'])
 484                 pow_hash = args.net.BITCOIN_POW_FUNC(block['header'])
 485
 486                 if pow_hash <= block['header']['target'] or p2pool_init.DEBUG:
 487                     if factory.conn.value is not None:
 488                         factory.conn.value.send_block(block=block)
 489                     else:
 490                         print 'No bitcoind connection! Erp!'
 491                     if pow_hash <= block['header']['target']:
 492                         print
 493                         print 'GOT BLOCK! Passing to bitcoind! bitcoin: %x' % (hash_,)
 494                         print
 495
 496                 if current_work.value['aux_work'] is not None and pow_hash <= current_work.value['aux_work']['target']:
 497                     try:
 498                         aux_pow = dict(
 499                             merkle_tx=dict(
 500                                 tx=transactions[0],
 501                                 block_hash=hash_,
 502                                 merkle_branch=[x['hash'] for x in p2pool.calculate_merkle_branch(transactions, 0)],
 503                                 index=0,
 504                             ),
 505                             merkle_branch=[],
 506                             index=0,
 507                             parent_block_header=header,
 508                         )
 509
 510                         a, b = transactions[0]['tx_ins'][0]['script'][-32-8:-8].encode('hex'), bitcoin.data.aux_pow_type.pack(aux_pow).encode('hex')
 511                         #print a, b
 512                         merged = jsonrpc.Proxy(args.merged_url, (args.merged_userpass,))
 513                         def _(res):
 514                             print "MERGED RESULT:", res
 515                         merged.rpc_getauxblock(a, b).addBoth(_)
 516                     except:
 517                         log.err(None, 'Error while processing merged mining POW:')
 518
 519                 target = p2pool.coinbase_type.unpack(transactions[0]['tx_ins'][0]['script'])['share_data']['target']
 520                 if pow_hash > target:
 521                     print 'Worker submitted share with hash > target:\nhash  : %x\ntarget: %x' % (pow_hash, target)
 522                     return False
 523                 share = p2pool.Share.from_block(block, args.net)
 524                 my_shares.add(share.hash)
 525                 if share.previous_hash != current_work.value['best_share_hash']:
 526                     doa_shares.add(share.hash)
 527                 print 'GOT SHARE! %s %s prev %s age %.2fs' % (user, p2pool.format_hash(share.hash), p2pool.format_hash(share.previous_hash), time.time() - times[share.nonce]) + (' DEAD ON ARRIVAL' if share.previous_hash != current_work.value['best_share_hash'] else '')
 528                 good = share.previous_hash == current_work.value['best_share_hash']
 529                 # maybe revert back to tracker being non-blocking so 'good' can be more accurate?
 530                 p2p_shares([share])
 531                 # eg. good = share.hash == current_work.value['best_share_hash'] here
 532                 return good
 533             except:
 534                 log.err(None, 'Error processing data received from worker:')
 535                 return False
 536
 537         web_root = worker_interface.WorkerInterface(current_work, compute, got_response, args.net)
 538
 539         def get_rate():
 540             if current_work.value['best_share_hash'] is not None:
 541                 height, last = tracker.get_height_and_last(current_work.value['best_share_hash'])
 542                 att_s = p2pool.get_pool_attempts_per_second(tracker, current_work.value['best_share_hash'], args.net, min(height - 1, 720))
 543                 fracs = [read_stale_frac(share) for share in itertools.islice(tracker.get_chain_known(current_work.value['best_share_hash']), 120) if read_stale_frac(share) is not None]
 544                 return json.dumps(int(att_s / (1. - (math.median(fracs) if fracs else 0))))
 545             return json.dumps(None)
 546
 547         def get_users():
 548             height, last = tracker.get_height_and_last(current_work.value['best_share_hash'])
 549             weights, total_weight = tracker.get_cumulative_weights(current_work.value['best_share_hash'], min(height, 720), 2**256)
 550             res = {}
 551             for script in sorted(weights, key=lambda s: weights[s]):
 552                 res[bitcoin.data.script2_to_human(script, args.net)] = weights[script]/total_weight
 553             return json.dumps(res)
 554
 555         class WebInterface(resource.Resource):
 556             def __init__(self, func, mime_type):
 557                 self.func, self.mime_type = func, mime_type
 558
 559             def render_GET(self, request):
 560                 request.setHeader('Content-Type', self.mime_type)
 561                 return self.func()
 562
 563         web_root.putChild('rate', WebInterface(get_rate, 'application/json'))
 564         web_root.putChild('users', WebInterface(get_users, 'application/json'))
 565         web_root.putChild('fee', WebInterface(lambda: json.dumps(args.worker_fee), 'application/json'))
 566         if draw is not None:
 567             web_root.putChild('chain_img', WebInterface(lambda: draw.get(tracker, current_work.value['best_share_hash']), 'image/png'))
 568
 569         reactor.listenTCP(args.worker_port, server.Site(web_root))
 570
 571         print '    ...success!'
 572         print
 573
 574         # done!
 575
 576         # do new getwork when a block is heard on the p2p interface
 577
 578         def new_block(block_hash):
 579             work_updated.happened()
 580         factory.new_block.watch(new_block)
 581
 582         print 'Started successfully!'
 583         print
 584
 585         ht.updated.watch(set_real_work2)
 586
 587         @defer.inlineCallbacks
 588         def work1_thread():
 589             while True:
 590                 flag = work_updated.get_deferred()
 591                 try:
 592                     yield set_real_work1()
 593                 except:
 594                     log.err()
 595                 yield defer.DeferredList([flag, deferral.sleep(random.uniform(1, 10))], fireOnOneCallback=True)
 596
 597         @defer.inlineCallbacks
 598         def work2_thread():
 599             while True:
 600                 try:
 601                     set_real_work2()
 602                 except:
 603                     log.err()
 604                 yield deferral.sleep(random.expovariate(1/20))
 605
 606         work1_thread()
 607         work2_thread()
 608
 609
 610         if hasattr(signal, 'SIGALRM'):
 611             def watchdog_handler(signum, frame):
 612                 print 'Watchdog timer went off at:'
 613                 traceback.print_stack()
 614
 615             signal.signal(signal.SIGALRM, watchdog_handler)
 616             task.LoopingCall(signal.alarm, 30).start(1)
 617
 618
 619         def read_stale_frac(share):
 620             if len(share.nonce) < 4:
 621                 return None
 622             a, b = struct.unpack("<HH", share.nonce[-4:])
 623             if a == 0 or a != b:
 624                 return None
 625             return a/65535
 626
 627         pool_str = None;
 628         while True:
 629             yield deferral.sleep(3)
 630             try:
 631                 if time.time() > current_work2.value['last_update'] + 60:
 632                     print '''---> LOST CONTACT WITH BITCOIND for 60 seconds, check that it isn't frozen or dead <---'''
 633                 if current_work.value['best_share_hash'] is not None:
 634                     height, last = tracker.get_height_and_last(current_work.value['best_share_hash'])
 635                     if height > 2:
 636                         att_s = p2pool.get_pool_attempts_per_second(tracker, current_work.value['best_share_hash'], args.net, min(height - 1, 720))
 637                         weights, total_weight = tracker.get_cumulative_weights(current_work.value['best_share_hash'], min(height, 720), 2**100)
 638                         shares, stale_doa_shares, stale_not_doa_shares = get_share_counts(True)
 639                         stale_shares = stale_doa_shares + stale_not_doa_shares
 640                         fracs = [read_stale_frac(share) for share in itertools.islice(tracker.get_chain_known(current_work.value['best_share_hash']), 120) if read_stale_frac(share) is not None]
 641                         str = 'Pool: %sH/s in %i shares (%i/%i verified) Recent: %.02f%% >%sH/s Shares: %i (%i orphan, %i dead) Peers: %i' % (
 642                             math.format(int(att_s / (1. - (math.median(fracs) if fracs else 0)))),
 643                             height,
 644                             len(tracker.verified.shares),
 645                             len(tracker.shares),
 646                             weights.get(my_script, 0)/total_weight*100,
 647                             math.format(int(weights.get(my_script, 0)*att_s//total_weight / (1. - (math.median(fracs) if fracs else 0)))),
 648                             shares,
 649                             stale_not_doa_shares,
 650                             stale_doa_shares,
 651                             len(p2p_node.peers),
 652                         ) + (' FDs: %i R/%i W' % (len(reactor.getReaders()), len(reactor.getWriters())) if p2pool_init.DEBUG else '')
 653                         if (str != pool_str):
 654                             print str;
 655                             pool_str = str;
 656                         if fracs:
 657                             med = math.median(fracs)
 658                             print 'Median stale proportion:', med
 659                             if shares:
 660                                 print '    Own:', stale_shares/shares
 661                                 if med < .99:
 662                                     print '    Own efficiency: %.02f%%' % (100*(1 - stale_shares/shares)/(1 - med),)
 663
 664
 665             except:
 666                 log.err()
 667     except:
 668         log.err(None, 'Fatal error:')
 669     finally:
 670         reactor.stop()
 671
 672 def run():
 673     class FixedArgumentParser(argparse.ArgumentParser):
 674         def _read_args_from_files(self, arg_strings):
 675             # expand arguments referencing files
 676             new_arg_strings = []
 677             for arg_string in arg_strings:
 678
 679                 # for regular arguments, just add them back into the list
 680                 if not arg_string or arg_string[0] not in self.fromfile_prefix_chars:
 681                     new_arg_strings.append(arg_string)
 682
 683                 # replace arguments referencing files with the file content
 684                 else:
 685                     try:
 686                         args_file = open(arg_string[1:])
 687                         try:
 688                             arg_strings = []
 689                             for arg_line in args_file.read().splitlines():
 690                                 for arg in self.convert_arg_line_to_args(arg_line):
 691                                     arg_strings.append(arg)
 692                             arg_strings = self._read_args_from_files(arg_strings)
 693                             new_arg_strings.extend(arg_strings)
 694                         finally:
 695                             args_file.close()
 696                     except IOError:
 697                         err = sys.exc_info()[1]
 698                         self.error(str(err))
 699
 700             # return the modified argument list
 701             return new_arg_strings
 702
 703         def convert_arg_line_to_args(self, arg_line):
 704             return [arg for arg in arg_line.split() if arg.strip()]
 705
 706     parser = FixedArgumentParser(description='p2pool (version %s)' % (p2pool_init.__version__,), fromfile_prefix_chars='@')
 707     parser.add_argument('--version', action='version', version=p2pool_init.__version__)
 708     parser.add_argument('--net',
 709         help='use specified network (default: bitcoin)',
 710         action='store', choices=sorted(x for x in p2pool.nets if 'testnet' not in x), default='bitcoin', dest='net_name')
 711     parser.add_argument('--testnet',
 712         help='''use the network's testnet''',
 713         action='store_const', const=True, default=False, dest='testnet')
 714     parser.add_argument('--debug',
 715         help='debugging mode',
 716         action='store_const', const=True, default=False, dest='debug')
 717     parser.add_argument('-a', '--address',
 718         help='generate to this address (defaults to requesting one from bitcoind)',
 719         type=str, action='store', default=None, dest='address')
 720     parser.add_argument('--logfile',
 721         help='''log to specific file (defaults to <network_name>.log in run_p2pool.py's directory)''',
 722         type=str, action='store', default=None, dest='logfile')
 723     parser.add_argument('--merged-url',
 724         help='call getauxblock on this url to get work for merged mining',
 725         type=str, action='store', default=None, dest='merged_url')
 726     parser.add_argument('--merged-userpass',
 727         help='merge daemon user and password, separated by a colon. Example: ncuser:ncpass',
 728         type=str, action='store', default=None, dest='merged_userpass')
 729
 730     p2pool_group = parser.add_argument_group('p2pool interface')
 731     p2pool_group.add_argument('--p2pool-port', metavar='PORT',
 732         help='use TCP port PORT to listen for connections (default: 9333 normally, 19333 for testnet) (forward this port from your router!)',
 733         type=int, action='store', default=None, dest='p2pool_port')
 734     p2pool_group.add_argument('-n', '--p2pool-node', metavar='ADDR[:PORT]',
 735         help='connect to existing p2pool node at ADDR listening on TCP port PORT (defaults to 9333 normally, 19333 for testnet), in addition to builtin addresses',
 736         type=str, action='append', default=[], dest='p2pool_nodes')
 737     parser.add_argument('-l', '--low-bandwidth',
 738         help='trade lower bandwidth usage for higher latency (reduced efficiency)',
 739         action='store_true', default=False, dest='low_bandwidth')
 740     parser.add_argument('--disable-upnp',
 741         help='''don't attempt to forward port 9333 (19333 for testnet) from the WAN to this computer using UPnP''',
 742         action='store_false', default=True, dest='upnp')
 743
 744     worker_group = parser.add_argument_group('worker interface')
 745     worker_group.add_argument('-w', '--worker-port', metavar='PORT',
 746         help='listen on PORT for RPC connections from miners asking for work and providing responses (default: bitcoin: 9332 namecoin: 9331 ixcoin: 9330 i0coin: 9329 solidcoin: 9328 litecoin: 9327, +10000 for testnets)',
 747         type=int, action='store', default=None, dest='worker_port')
 748     worker_group.add_argument('-f', '--fee', metavar='FEE_PERCENTAGE',
 749         help='''charge workers mining to their own bitcoin address (by setting their miner's username to a bitcoin address) this percentage fee to mine on your p2pool instance. Amount displayed at http://127.0.0.1:9332/fee . default: 0''',
 750         type=float, action='store', default=0, dest='worker_fee')
 751
 752     bitcoind_group = parser.add_argument_group('bitcoind interface')
 753     bitcoind_group.add_argument('--bitcoind-address', metavar='BITCOIND_ADDRESS',
 754         help='connect to a bitcoind at this address (default: 127.0.0.1)',
 755         type=str, action='store', default='127.0.0.1', dest='bitcoind_address')
 756     bitcoind_group.add_argument('--bitcoind-rpc-port', metavar='BITCOIND_RPC_PORT',
 757         help='connect to a bitcoind at this port over the RPC interface - used to get the current highest block via getwork (default: 8332 ixcoin: 8338 i0coin: 7332 litecoin: 9332)',
 758         type=int, action='store', default=None, dest='bitcoind_rpc_port')
 759     bitcoind_group.add_argument('--bitcoind-p2p-port', metavar='BITCOIND_P2P_PORT',
 760         help='connect to a bitcoind at this port over the p2p interface - used to submit blocks and get the pubkey to generate to via an IP transaction (default: 8333 namecoin: 8334 ixcoin: 8337 i0coin: 7333 solidcoin: 7555 litecoin: 9333, +10000 for testnets)',
 761         type=int, action='store', default=None, dest='bitcoind_p2p_port')
 762
 763     bitcoind_group.add_argument(metavar='BITCOIND_RPCUSER',
 764         help='bitcoind RPC interface username (default: empty)',
 765         type=str, action='store', default='', nargs='?', dest='bitcoind_rpc_username')
 766     bitcoind_group.add_argument(metavar='BITCOIND_RPCPASSWORD',
 767         help='bitcoind RPC interface password',
 768         type=str, action='store', dest='bitcoind_rpc_password')
 769
 770     args = parser.parse_args()
 771
 772     if args.debug:
 773         p2pool_init.DEBUG = True
 774
 775     if args.logfile is None:
 776         args.logfile = os.path.join(os.path.dirname(sys.argv[0]), args.net_name + ('_testnet' if args.testnet else '') + '.log')
 777
 778     class LogFile(object):
 779         def __init__(self, filename):
 780             self.filename = filename
 781             self.inner_file = None
 782             self.reopen()
 783         def reopen(self):
 784             if self.inner_file is not None:
 785                 self.inner_file.close()
 786             open(self.filename, 'a').close()
 787             f = open(self.filename, 'rb')
 788             f.seek(0, os.SEEK_END)
 789             length = f.tell()
 790             if length > 100*1000*1000:
 791                 f.seek(-1000*1000, os.SEEK_END)
 792                 while True:
 793                     if f.read(1) in ('', '\n'):
 794                         break
 795                 data = f.read()
 796                 f.close()
 797                 f = open(self.filename, 'wb')
 798                 f.write(data)
 799             f.close()
 800             self.inner_file = open(self.filename, 'a')
 801         def write(self, data):
 802             self.inner_file.write(data)
 803         def flush(self):
 804             self.inner_file.flush()
 805     class TeePipe(object):
 806         def __init__(self, outputs):
 807             self.outputs = outputs
 808         def write(self, data):
 809             for output in self.outputs:
 810                 output.write(data)
 811         def flush(self):
 812             for output in self.outputs:
 813                 output.flush()
 814     class TimestampingPipe(object):
 815         def __init__(self, inner_file):
 816             self.inner_file = inner_file
 817             self.buf = ''
 818             self.softspace = 0
 819         def write(self, data):
 820             buf = self.buf + data
 821             lines = buf.split('\n')
 822             for line in lines[:-1]:
 823                 self.inner_file.write('%s %s\n' % (datetime.datetime.now().strftime("%H:%M:%S.%f"), line))
 824                 self.inner_file.flush()
 825             self.buf = lines[-1]
 826         def flush(self):
 827             pass
 828     logfile = LogFile(args.logfile)
 829     sys.stdout = sys.stderr = log.DefaultObserver.stderr = TimestampingPipe(TeePipe([sys.stderr, logfile]))
 830     if hasattr(signal, "SIGUSR1"):
 831         def sigusr1(signum, frame):
 832             print 'Caught SIGUSR1, closing %r...' % (args.logfile,)
 833             logfile.reopen()
 834             print '...and reopened %r after catching SIGUSR1.' % (args.logfile,)
 835         signal.signal(signal.SIGUSR1, sigusr1)
 836     task.LoopingCall(logfile.reopen).start(5)
 837
 838     args.net = p2pool.nets[args.net_name + ('_testnet' if args.testnet else '')]
 839
 840     if args.bitcoind_rpc_port is None:
 841         args.bitcoind_rpc_port = args.net.BITCOIN_RPC_PORT
 842
 843     if args.bitcoind_p2p_port is None:
 844         args.bitcoind_p2p_port = args.net.BITCOIN_P2P_PORT
 845
 846     if args.p2pool_port is None:
 847         args.p2pool_port = args.net.P2P_PORT
 848
 849     if args.worker_port is None:
 850         args.worker_port = args.net.WORKER_PORT
 851
 852     if args.address is not None:
 853         try:
 854             args.pubkey_hash = bitcoin.data.address_to_pubkey_hash(args.address, args.net)
 855         except Exception, e:
 856             parser.error('error parsing address: ' + repr(e))
 857     else:
 858         args.pubkey_hash = None
 859
 860     if (args.merged_url is None) ^ (args.merged_userpass is None):
 861         parser.error('must specify --merged-url and --merged-userpass')
 862
 863     reactor.callWhenRunning(main, args)
 864     reactor.run()