--- /dev/null
+#!/usr/bin/env python
+#
+# Electrum - lightweight Bitcoin client
+# Copyright (C) 2011 thomasv@gitorious
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+import base64
+from functools import partial
+from itertools import imap
+import random
+import string
+import threading
+import time
+import hashlib
+import re
+import sys
+
+__b58chars = '123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz'
+__b58base = len(__b58chars)
+
+
+def rev_hex(s):
+ return s.decode('hex')[::-1].encode('hex')
+
+
+def int_to_hex(i, length=1):
+ s = hex(i)[2:].rstrip('L')
+ s = "0"*(2*length - len(s)) + s
+ return rev_hex(s)
+
+
+def var_int(i):
+ if i < 0xfd:
+ return int_to_hex(i)
+ elif i <= 0xffff:
+ return "fd" + int_to_hex(i, 2)
+ elif i <= 0xffffffff:
+ return "fe" + int_to_hex(i, 4)
+ else:
+ return "ff" + int_to_hex(i, 8)
+
+
+Hash = lambda x: hashlib.sha256(hashlib.sha256(x).digest()).digest()
+
+
+hash_encode = lambda x: x[::-1].encode('hex')
+
+
+hash_decode = lambda x: x.decode('hex')[::-1]
+
+
+def header_to_string(res):
+ pbh = res.get('prev_block_hash')
+ if pbh is None:
+ pbh = '0'*64
+
+ return int_to_hex(res.get('version'), 4) \
+ + rev_hex(pbh) \
+ + rev_hex(res.get('merkle_root')) \
+ + int_to_hex(int(res.get('timestamp')), 4) \
+ + int_to_hex(int(res.get('bits')), 4) \
+ + int_to_hex(int(res.get('nonce')), 4)
+
+
+def hex_to_int(s):
+ return eval('0x' + s[::-1].encode('hex'))
+
+
+def header_from_string(s):
+ return {
+ 'version': hex_to_int(s[0:4]),
+ 'prev_block_hash': hash_encode(s[4:36]),
+ 'merkle_root': hash_encode(s[36:68]),
+ 'timestamp': hex_to_int(s[68:72]),
+ 'bits': hex_to_int(s[72:76]),
+ 'nonce': hex_to_int(s[76:80]),
+ }
+
+
+############ functions from pywallet #####################
+
+addrtype = 0
+
+
+def hash_160(public_key):
+ try:
+ md = hashlib.new('ripemd160')
+ md.update(hashlib.sha256(public_key).digest())
+ return md.digest()
+ except:
+ import ripemd
+ md = ripemd.new(hashlib.sha256(public_key).digest())
+ return md.digest()
+
+
+def public_key_to_bc_address(public_key):
+ return hash_160_to_bc_address(hash_160(public_key))
+
+
+def hash_160_to_bc_address(h160):
+ if h160 == 'None':
+ return 'None'
+ vh160 = chr(addrtype) + h160
+ h = Hash(vh160)
+ addr = vh160 + h[0:4]
+ return b58encode(addr)
+
+
+def bc_address_to_hash_160(addr):
+ if addr == 'None':
+ return 'None'
+ bytes = b58decode(addr, 25)
+ return bytes[1:21]
+
+
+def b58encode(v):
+ """encode v, which is a string of bytes, to base58."""
+
+ long_value = 0L
+ for (i, c) in enumerate(v[::-1]):
+ long_value += (256**i) * ord(c)
+
+ result = ''
+ while long_value >= __b58base:
+ div, mod = divmod(long_value, __b58base)
+ result = __b58chars[mod] + result
+ long_value = div
+ result = __b58chars[long_value] + result
+
+ # Bitcoin does a little leading-zero-compression:
+ # leading 0-bytes in the input become leading-1s
+ nPad = 0
+ for c in v:
+ if c == '\0':
+ nPad += 1
+ else:
+ break
+
+ return (__b58chars[0]*nPad) + result
+
+
+def b58decode(v, length):
+ """ decode v into a string of len bytes."""
+ long_value = 0L
+ for (i, c) in enumerate(v[::-1]):
+ long_value += __b58chars.find(c) * (__b58base**i)
+
+ result = ''
+ while long_value >= 256:
+ div, mod = divmod(long_value, 256)
+ result = chr(mod) + result
+ long_value = div
+ result = chr(long_value) + result
+
+ nPad = 0
+ for c in v:
+ if c == __b58chars[0]:
+ nPad += 1
+ else:
+ break
+
+ result = chr(0)*nPad + result
+ if length is not None and len(result) != length:
+ return None
+
+ return result
+
+
+def EncodeBase58Check(vchIn):
+ hash = Hash(vchIn)
+ return b58encode(vchIn + hash[0:4])
+
+
+def DecodeBase58Check(psz):
+ vchRet = b58decode(psz, None)
+ key = vchRet[0:-4]
+ csum = vchRet[-4:]
+ hash = Hash(key)
+ cs32 = hash[0:4]
+ if cs32 != csum:
+ return None
+ else:
+ return key
+
+
+def PrivKeyToSecret(privkey):
+ return privkey[9:9+32]
+
+
+def SecretToASecret(secret):
+ vchIn = chr(addrtype+128) + secret
+ return EncodeBase58Check(vchIn)
+
+
+def ASecretToSecret(key):
+ vch = DecodeBase58Check(key)
+ if vch and vch[0] == chr(addrtype+128):
+ return vch[1:]
+ else:
+ return False
+
+
+########### end pywallet functions #######################
+
+def random_string(length):
+ return ''.join(random.choice(string.ascii_uppercase + string.digits) for x in xrange(length))
+
+
+def timestr():
+ return time.strftime("[%d/%m/%Y-%H:%M:%S]")
+
+
+print_lock = threading.Lock()
+
+
+def print_log(*args):
+ with print_lock:
+ sys.stderr.write(timestr() + " " + " ".join(imap(str, args)) + "\n")
+ sys.stderr.flush()
git://git.novaco.in / electrum-server.git / blobdiff