Files
python-monero/monero/utils.py
T
moneromooo 5daa9d89fc Payment IDs can now be deterministic or non-deterministic
Also add a site salt to create them, so a given user ID will yield
different payment IDs for different sites.
2015-03-09 18:46:55 +00:00

249 lines
8.6 KiB
Python

#!/bin/python
#
# python-monero - utility functions
# Copyright 2014,2015 moneromooo
#
# Redistribution and use in source and binary forms, with or without modification, are
# permitted provided that the following conditions are met:
#
# 1. Redistributions of source code must retain the above copyright notice, this list of
# conditions and the following disclaimer.
#
# 2. Redistributions in binary form must reproduce the above copyright notice, this list
# of conditions and the following disclaimer in the documentation and/or other
# materials provided with the distribution.
#
# 3. Neither the name of the copyright holder nor the names of its contributors may be
# used to endorse or promote products derived from this software without specific
# prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
# EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
# THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
# STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
# THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
import redis
import hashlib
import json
import httplib
import time
import string
from Crypto.Random.random import getrandbits
from decimal import *
from log import log_error, log_warn, log_info, log_log
from redisdb import *
address_length = [95, 95] # min/max size of addresses
address_prefix = ['4', '9'] # allowed prefixes of addresses
cached_wallet_balance=None
cached_wallet_unlocked_balance=None
cached_wallet_balance_timestamp=None
def GetPaymentIDFromUserID(user_id,deterministic,site_salt=''):
salt="nveuweaiirv-"+site_salt+'-'
if deterministic:
s = salt + user_id
else:
s = salt + str(getrandbits(128)) + '-' + user_id
p = hashlib.sha256(s).hexdigest()
try:
redis_hset("paymentid",p,user_id)
except Exception,e:
log_error('GetPaymentIDFromUserID: failed to set payment ID for %s to redis: %s' % (user_id,str(e)))
return p
def GetUserIDFromPaymentID(paymentid):
if not redis_hexists("paymentid",paymentid):
log_log('PaymentID %s not found' % paymentid)
return None
identity = redis_hget("paymentid",paymentid)
log_log('PaymentID %s => %s' % (paymentid, str(identity)))
return identity
def IsValidAddress(address):
if len(address) < address_length[0] or len(address) > address_length[1]:
return False
for prefix in address_prefix:
if address.startswith(prefix):
return True
return False
def IsValidPaymentID(payment_id):
if len(payment_id)!=64:
return False
for char in payment_id:
if char not in string.hexdigits:
return False
return True
def SendJSONRPCCommand(host,port,method,params):
try:
http = httplib.HTTPConnection(host,port,timeout=20)
except Exception,e:
log_error('SendJSONRPCCommand: Error connecting to %s:%u: %s' % (host, port, str(e)))
raise
d = dict(id="0",jsonrpc="2.0",method=method,params=params)
try:
j = json.dumps(d).encode()
except Exception,e:
log_error('SendJSONRPCCommand: Failed to encode JSON: %s' % str(e))
http.close()
raise
log_log('SendJSONRPCCommand: Sending json as body: %s' % j)
headers = None
try:
http.request("POST","/json_rpc",body=j)
except Exception,e:
log_error('SendJSONRPCCommand: Failed to post request: %s' % str(e))
http.close()
raise
response = http.getresponse()
if response.status != 200:
log_error('SendJSONRPCCommand: Error, received reply status %s' % str(response.status))
http.close()
raise RuntimeError("Error "+response.status)
s = response.read()
log_log('SendJSONRPCCommand: Received reply status %s: %s' % (response.status, str(s).replace('\r\n',' ').replace('\n',' ')))
try:
j = json.loads(s)
except Exception,e:
log_error('SendJSONRPCCommand: Failed to decode JSON: %s' % str(e))
http.close()
raise
http.close()
return j
def SendHTMLCommand(host,port,method):
try:
http = httplib.HTTPConnection(host,port,timeout=20)
except Exception,e:
log_error('SendHTMLCommand: Error connecting to %s:%u: %s' % (host, port, str(e)))
raise
headers = None
try:
http.request("POST","/"+method)
except Exception,e:
log_error('SendHTMLCommand: Failed to post request: %s' % str(e))
http.close()
raise
response = http.getresponse()
if response.status != 200:
log_error('SendHTMLCommand: Error, received reply status %s' % str(response.status))
http.close()
raise RuntimeError("Error "+response.status)
s = response.read()
log_log('SendHTMLCommand: Received reply status %s: %s' % (response.status,s.replace('\r\n',' ').replace('\n',' ')))
try:
j = json.loads(s)
except Exception,e:
log_error('SendHTMLCommand: Failed to decode JSON: %s' % str(e))
http.close()
raise
http.close()
return j
def RetrieveWalletBalance(wallet_host,wallet_port,force_refresh=False):
global cached_wallet_balance, cached_wallet_unlocked_balance, cached_wallet_balance_timestamp
if not force_refresh and cached_wallet_balance_timestamp and time.time()-cached_wallet_balance_timestamp < 35:
return cached_wallet_balance, cached_wallet_unlocked_balance
j = SendJSONRPCCommand(wallet_host,wallet_port,"getbalance",None)
if not "result" in j:
log_error('RetrieveWalletBalance: result not found in reply')
raise RuntimeError("")
return
result = j["result"]
if not "balance" in result:
log_error('RetrieveWalletBalance: balance not found in result')
raise RuntimeError("")
return
if not "unlocked_balance" in result:
log_error('RetrieveWalletBalance: unlocked_balance not found in result')
raise RuntimeError("")
return
balance = result["balance"]
unlocked_balance = result["unlocked_balance"]
log_log('RetrieveWalletBalance: balance: %s' % str(balance))
log_log('RetrieveWalletBalance: unlocked_balance: %s' % str(unlocked_balance))
pending = long(balance)-long(unlocked_balance)
if pending < 0:
log_error('RetrieveWalletBalance: Negative pending balance! balance %s, unlocked %s' % (str(balance),str(unlocked_balance)))
raise RuntimeError("")
return
cached_wallet_balance_timestamp=time.time()
cached_wallet_balance=balance
cached_wallet_unlocked_balance=unlocked_balance
return balance, unlocked_balance
# Code taken from the Python documentation
def moneyfmt(value, places=2, curr='', sep=',', dp='.',
pos='', neg='-', trailneg=''):
"""Convert Decimal to a money formatted string.
places: required number of places after the decimal point
curr: optional currency symbol before the sign (may be blank)
sep: optional grouping separator (comma, period, space, or blank)
dp: decimal point indicator (comma or period)
only specify as blank when places is zero
pos: optional sign for positive numbers: '+', space or blank
neg: optional sign for negative numbers: '-', '(', space or blank
trailneg:optional trailing minus indicator: '-', ')', space or blank
>>> d = Decimal('-1234567.8901')
>>> moneyfmt(d, curr='$')
'-$1,234,567.89'
>>> moneyfmt(d, places=0, sep='.', dp='', neg='', trailneg='-')
'1.234.568-'
>>> moneyfmt(d, curr='$', neg='(', trailneg=')')
'($1,234,567.89)'
>>> moneyfmt(Decimal(123456789), sep=' ')
'123 456 789.00'
>>> moneyfmt(Decimal('-0.02'), neg='<', trailneg='>')
'<0.02>'
"""
q = Decimal(10) ** -places # 2 places --> '0.01'
sign, digits, exp = value.quantize(q).as_tuple()
result = []
digits = map(str, digits)
build, next = result.append, digits.pop
if sign:
build(trailneg)
for i in range(places):
build(next() if digits else '0')
build(dp)
if not digits:
build('0')
i = 0
while digits:
build(next())
i += 1
if i == 3 and digits:
i = 0
build(sep)
build(curr)
build(neg if sign else pos)
s = ''.join(reversed(result))
if dp in s:
s=s.strip('0').rstrip(dp)
if s=="" or s[0]==dp:
s="0"+s
return s
def AmountToString(amount):
if amount == None:
amount = 0
lamount=long(amount)
samount = moneyfmt(Decimal(lamount)/Decimal(1e12),places=12) + " monero"
return samount