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298 lines
10 KiB
298 lines
10 KiB
#!/bin/python
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#
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# Cryptonote tipbot - dice commands
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# Copyright 2014,2015 moneromooo
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#
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# The Cryptonote tipbot is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License as published
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# by the Free Software Foundation; either version 2, or (at your option)
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# any later version.
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#
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import sys
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import os
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import redis
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import hashlib
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import time
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import string
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import random
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import tipbot.config as config
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from tipbot.log import log_error, log_warn, log_info, log_log
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import tipbot.coinspecs as coinspecs
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from tipbot.user import User
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from tipbot.link import Link
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from tipbot.utils import *
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from tipbot.command_manager import *
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from tipbot.redisdb import *
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from tipbot.betutils import *
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def Roll(link):
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identity=link.identity()
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try:
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if redis_hexists('dice:rolls',identity):
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rolls = redis_hget('dice:rolls',identity)
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rolls = long(rolls) + 1
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else:
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rolls = 1
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except Exception,e:
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log_error('Failed to prepare roll for %s: %s' % (identity, str(e)))
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raise
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try:
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s = GetServerSeed(link,'dice') + ":" + GetPlayerSeed(link,'dice') + ":" + str(rolls)
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sh = hashlib.sha256(s).hexdigest()
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roll = float(long(sh[0:8],base=16))/0xffffffff
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return rolls, roll
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except Exception,e:
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log_error('Failed to roll for %s: %s' % (identity,str(e)))
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raise
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def Dice(link,cmd):
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identity=link.identity()
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try:
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amount=float(cmd[1])
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units=StringToUnits(cmd[1])
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multiplier = float(cmd[2])
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overunder=GetParam(cmd,3)
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except Exception,e:
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link.send("Usage: dice amount multiplier [over|under]")
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return
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if multiplier < float(config.dice_min_multiplier) or multiplier > float(config.dice_max_multiplier):
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link.send("Invalid multiplier: should be between %f and %f" % (config.dice_min_multiplier, config.dice_max_multiplier))
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return
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if overunder == "over":
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under=False
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elif overunder == "under" or not overunder:
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under=True
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else:
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link.send("Usage: dice amount multiplier [over|under]")
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return
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log_info("Dice: %s wants to bet %s at x%f, %s target" % (identity, AmountToString(units), multiplier, "under" if under else "over"))
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potential_loss = amount * multiplier
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valid,reason = IsBetValid(link,amount,config.dice_min_bet,config.dice_max_bet,potential_loss,config.dice_max_loss,config.dice_max_loss_ratio)
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if not valid:
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log_info("Dice: %s's bet refused: %s" % (identity, reason))
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link.send("%s: %s" % (link.user.nick, reason))
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return
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try:
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rolls, roll = Roll(link)
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except:
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link.send("An error occured")
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return
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target = (1 - config.dice_edge) / multiplier
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if not under:
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target = 1 - target
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log_info("Dice: %s's #%d roll: %.16g, target %s %.16g" % (identity, rolls, roll, "under" if under else "over", target))
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lose_units = units
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win_units = long(units * multiplier) - lose_units
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log_log('units %s, multiplier %f, edge %f, lose_units %s, win_units %s' % (AmountToString(units), multiplier, config.dice_edge, AmountToString(lose_units), AmountToString(win_units)))
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if under:
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win = roll <= target
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else:
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win = roll >= target
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if win:
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msg = "%s bets %s and wins %s on roll #%d! %.16g %s %.16g" % (link.user.nick, AmountToString(lose_units), AmountToString(win_units+lose_units), rolls, roll, "<=" if under else ">=", target)
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else:
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msg = "%s bets %s and loses on roll #%d. %.16g %s %.16g" % (link.user.nick, AmountToString(lose_units), rolls, roll, ">" if under else "<", target)
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try:
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RecordGameResult(link,"dice",win,not win,win_units if win else lose_units)
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except:
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return
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redis_hset("dice:rolls",identity,rolls)
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link.send("%s" % msg)
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def ShowDiceStats(link,sidentity,title):
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return ShowGameStats(link,sidentity,title,"dice")
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def GetDiceStats(link,cmd):
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identity=link.identity()
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sidentity = GetParam(cmd,1)
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if sidentity:
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sidentity=IdentityFromString(link,sidentity)
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if sidentity and sidentity != identity:
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if not IsAdmin(link):
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log_error('%s is not admin, cannot see dice stats for %s' % (identity, sidentity))
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link.send('Access denied')
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return
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else:
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sidentity=identity
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ShowDiceStats(link,sidentity,NickFromIdentity(sidentity))
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ShowDiceStats(link,"reset:"+sidentity,'%s since reset' % NickFromIdentity(sidentity))
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ShowDiceStats(link,'','overall')
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def ResetDiceStats(link,cmd):
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identity=link.identity()
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sidentity = GetParam(cmd,1)
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if sidentity:
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sidentity=IdentityFromString(link,sidentity)
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if sidentity and sidentity != identity:
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if not IsAdmin(link):
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log_error('%s is not admin, cannot see dice stats for %s' % (identity, sidentity))
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link.send('Access denied')
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return
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else:
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sidentity=identity
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try:
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ResetGameStats(link,sidentity,"dice")
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except Exception,e:
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link.send("An error occured")
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def PlayerSeed(link,cmd):
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identity=link.identity()
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fair_string = GetParam(cmd,1)
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if not fair_string:
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link.send("Usage: !playerseed <string>")
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return
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try:
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SetPlayerSeed(link,'dice',fair_string)
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except Exception,e:
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log_error('Failed to save player seed for %s: %s' % (identity, str(e)))
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link.send('An error occured')
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try:
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ps = GetPlayerSeed(link,'dice')
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except Exception,e:
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log_error('Failed to retrieve newly set player seed for %s: %s' % (identity, str(e)))
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link.send('An error occured')
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return
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link.send('Your new player seed is: %s' % ps)
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def FairCheck(link,cmd):
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identity=link.identity()
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try:
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seed = GetServerSeed(link,'dice')
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except Exception,e:
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log_error('Failed to get server seed for %s: %s' % (identity,str(e)))
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link.send('An error has occured')
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return
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try:
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GenerateServerSeed(link,'dice')
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except Exception,e:
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log_error('Failed to generate server seed for %s: %s' % (identity,str(e)))
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link.send('An error has occured')
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return
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link.send('Your server seed was %s - it has now been reset; see !fair for details' % str(seed))
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def Seeds(link,cmd):
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identity=link.identity()
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try:
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sh = GetServerSeedHash(link,'dice')
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ps = GetPlayerSeed(link,'dice')
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except Exception,e:
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log_error('Failed to get server seed for %s: %s' % (identity,str(e)))
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link.send('An error has occured')
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return
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link.send('Your server seed hash is %s' % str(sh))
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if ps == "":
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link.send('You have not set a player seed')
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else:
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link.send('Your player seed hash is %s' % str(ps))
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def Fair(link,cmd):
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link.send_private("%s's dice betting is provably fair" % config.tipbot_name)
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link.send_private("Your rolls are determined by three pieces of information:")
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link.send_private(" - your server seed. You can see its hash with !seeds")
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link.send_private(" - your player seed. Empty by default, you can set it with !playerseed")
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link.send_private(" - the roll number, displayed with each bet you make")
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link.send_private("To verify past rolls were fair, use !faircheck")
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link.send_private("You will be given your server seed, and a new one will be generated")
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link.send_private("for future rolls. Then follow these steps:")
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link.send_private("Calculate the SHA-256 sum of serverseed:playerseed:rollnumber")
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link.send_private("Take the first 8 characters of this sum to make an hexadecimal")
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link.send_private("number, and divide it by 0xffffffff. You will end up with a number")
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link.send_private("between 0 and 1 which was your roll for that particular bet")
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link.send_private("See !faircode for Python code implementing this check")
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def FairCode(link,cmd):
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link.send_private("This Python 2 code takes the seeds and roll number and outputs the roll")
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link.send_private("for the corresponding game. Run it with three arguments: server seed,")
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link.send_private("player seed (use '' if you did not set any), and roll number.")
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link.send_private("import sys,hashlib,random")
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link.send_private("try:")
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link.send_private(" s=hashlib.sha256(sys.argv[1]+':'+sys.argv[2]+':'+sys.argv[3]).hexdigest()")
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link.send_private(" roll = float(long(s[0:8],base=16))/0xffffffff")
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link.send_private(" print '%.16g' % roll")
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link.send_private("except:")
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link.send_private(" print 'need serverseed, playerseed, and roll number'")
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def DiceHelp(link):
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link.send_private("The dice module is a provably fair %s dice betting game" % coinspecs.name)
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link.send_private("Basic usage: !dice <amount> <multiplier> [over|under]")
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link.send_private("The goal is to get a roll under (or over, at your option) a target that depends")
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link.send_private("on your chosen profit multiplier (1 for even money)")
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link.send_private("See !fair and !faircode for a description of the provable fairness of the game")
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link.send_private("See !faircheck to get the server seed to check past rolls were fair")
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random.seed(time.time())
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RegisterModule({
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'name': __name__,
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'help': DiceHelp,
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})
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RegisterCommand({
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'module': __name__,
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'name': 'dice',
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'parms': '<amount-in-%s> <multiplier> [over|under]' % coinspecs.name,
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'function': Dice,
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'registered': True,
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'help': "play a dice game - house edge %.1f%%" % (float(config.dice_edge)*100)
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})
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RegisterCommand({
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'module': __name__,
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'name': 'stats',
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'parms': '[<name>]',
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'function': GetDiceStats,
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'registered': True,
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'help': "displays your dice stats"
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})
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RegisterCommand({
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'module': __name__,
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'name': 'resetstats',
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'parms': '[<name>]',
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'function': ResetDiceStats,
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'registered': True,
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'help': "resets your dice stats"
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})
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RegisterCommand({
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'module': __name__,
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'name': 'playerseed',
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'parms': '<string>',
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'function': PlayerSeed,
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'registered': True,
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'help': "set a custom seed to use in the hash calculation"
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})
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RegisterCommand({
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'module': __name__,
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'name': 'seeds',
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'function': Seeds,
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'registered': True,
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'help': "Show hash of your current server seed and your player seed"
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})
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RegisterCommand({
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'module': __name__,
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'name': 'faircheck',
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'function': FairCheck,
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'registered': True,
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'help': "Check provably fair rolls"
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})
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RegisterCommand({
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'module': __name__,
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'name': 'fair',
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'function': Fair,
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'help': "describe the provably fair dice game"
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})
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RegisterCommand({
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'module': __name__,
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'name': 'faircode',
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'function': FairCode,
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'help': "Show sample Python code to check bet fairness"
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})
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