def addr2id(addr, cur=None, rtnPKH=False):
pkh = addr2pkh(addr)
if not pkh:
return None,'' if rtnPKH else None
addr_id, = unpack('<q', hashlib.sha256(pkh).digest()[:5]+'\0'*3)
if addr[:2].lower() == coincfg(BECH_HRP): # bech32 has bit 42 set, >20 byte, encode as odd id and stored in bech32 table
addr_id |= BECH32_FLAG
if len(pkh) > 20:
addr_id |= P2SH_FLAG
elif addr[0] in coincfg(P2SH_CHAR): # encode P2SH flag
addr_id |= P2SH_FLAG
if cur:
tbl = 'bech32' if is_BL32(addr_id) else 'address'
cur.execute("select id from {0} where id>=%s and id<%s+32 and addr=%s limit 1;".format(tbl), (addr_id,addr_id,pkh))
row = cur.fetchone()
return row[0] if row else None
return (addr_id,pkh) if rtnPKH else addr_id
def addr2id(addr, cur=None, rtnPKH=False):
pkh = addr2pkh(addr)
if not pkh:
return None,'' if rtnPKH else None
addr_id, = unpack('<q', hashlib.sha256(pkh).digest()[:5]+'\0'*3)
if addr[:2].lower() == coincfg(BECH_HRP): # bech32 has bit 42 set, >20 byte, encode as odd id and stored in bech32 table
addr_id |= BECH32_FLAG
if len(pkh) > 20:
addr_id |= P2SH_FLAG
elif addr[0] in coincfg(P2SH_CHAR): # encode P2SH flag
addr_id |= P2SH_FLAG
if cur:
tbl = 'bech32' if is_BL32(addr_id) else 'address'
cur.execute("select id from {0} where id>=%s and id<%s+32 and addr=%s limit 1;".format(tbl), (addr_id,addr_id,pkh))
row = cur.fetchone()
return row[0] if row else None
return (addr_id,pkh) if rtnPKH else addr_id
def mkaddr(pkh, aid=None, p2sh=False, bech32=False):
if pkh == '\0'*20 and aid==0:
return '' # pkh==0 id==0, special case for null address when op_return or non-std script
if bech32 or (aid and (aid & BECH32_FLAG != 0)):
return bech32encode(coincfg(BECH_HRP), pkh)
pad = ''
an = chr(coincfg(ADDR_PREFIX) if (aid is None and not p2sh) or (aid is not None and (aid & P2SH_FLAG != P2SH_FLAG)) else coincfg(P2SH_PREFIX)) + str(pkh)
for c in an:
if c == '\0':
pad += '1'
else:
break
num = long((an + hashlib.sha256(hashlib.sha256(an).digest()).digest()[0:4]).encode('hex'), 16)
out = ''
while num >= 58:
num,m = divmod(num, 58)
out = b58[m] + out
return pad + b58[num] + out
def mkaddr(pkh, aid=None, p2sh=False, bech32=False):
if pkh == '\0'*20 and aid==0:
return '' # pkh==0 id==0, special case for null address when op_return or non-std script
if bech32 or (aid and (aid & BECH32_FLAG != 0)):
return bech32encode(coincfg(BECH_HRP), pkh)
pad = ''
an = chr(coincfg(ADDR_PREFIX) if (aid is None and not p2sh) or (aid is not None and (aid & P2SH_FLAG != P2SH_FLAG)) else coincfg(P2SH_PREFIX)) + str(pkh)
for c in an:
if c == '\0':
pad += '1'
else:
break
num = long((an + hashlib.sha256(hashlib.sha256(an).digest()).digest()[0:4]).encode('hex'), 16)
out = ''
while num >= 58:
num,m = divmod(num, 58)
out = b58[m] + out
return pad + b58[num] + out
def is_address(addr):
if addr[:2].lower() == coincfg(BECH_HRP):
return bech32decode(addr) != None
try:
n = 0
for c in addr:
n = n * 58 + b58.index(c)
btc = ('%%0%dx' % (25 << 1) % n).decode('hex')[-25:]
return btc[-4:] == hashlib.sha256(hashlib.sha256(btc[:-4]).digest()).digest()[:4]
except Exception: # pylint:disable=broad-except
return False
def is_address(addr):
if addr[:2].lower() == coincfg(BECH_HRP):
return bech32decode(addr) != None
try:
n = 0
for c in addr:
n = n * 58 + b58.index(c)
btc = ('%%0%dx' % (25 << 1) % n).decode('hex')[-25:]
return btc[-4:] == hashlib.sha256(hashlib.sha256(btc[:-4]).digest()).digest()[:4]
except Exception: # pylint:disable=broad-except
return False
def addr2pkh(addr):
if addr[:2].lower() == coincfg(BECH_HRP):
pkh = bech32decode(addr)
return str(pkh[2:]) if pkh else None
long_value = 0L
for (i, c) in enumerate(addr[::-1]):
long_value += b58.find(c) * (58**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 addr:
if c == b58[0]:
nPad += 1
else:
break
result = chr(0)*nPad + result
return result[1:-4]
def addr2pkh(addr):
if addr[:2].lower() == coincfg(BECH_HRP):
pkh = bech32decode(addr)
return str(pkh[2:]) if pkh else None
long_value = 0L
for (i, c) in enumerate(addr[::-1]):
long_value += b58.find(c) * (58**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 addr:
if c == b58[0]:
nPad += 1
else:
break
result = chr(0)*nPad + result
return result[1:-4]
def findBlocks(cur, blockpath, verbose):
global lastpos # pylint:disable=global-statement
filenum,pos = lastpos
startpos = pos
blkhash = None
if filenum > 0:
while not os.path.exists(blockpath % (filenum+2,)): # we trail by 2 blks file otherwise not reliable
for _ in range(12):
sleep(5)
if sqc.done.isSet():
return None
cur.execute("select 1;") # keepalive during long waits
try:
with open(blockpath % filenum, "rb") as fd:
while not sqc.done.isSet():
fd.seek(pos)
buf = fd.read(8)
if len(buf) < 8:
break
magic,blksize = unpack('<II', buf)
if magic != coincfg(BLKDAT_MAGIC):
if pos-startpos > 1e6: # skip large end gaps
break
pos += 1
continue
buf = fd.read(80)
blkhash = sha256(sha256(buf).digest()).digest()
prevhash = buf[4:36]
if verbose:
log("%05d:%d %s %s" % (filenum, pos, blkhash[::-1].encode('hex')[:32], prevhash[::-1].encode('hex')[:32]) )
cur.execute("insert ignore into blkdat (id,hash,prevhash,filenum,filepos) values(-1,%s,%s,%s,%s);", (blkhash,prevhash,filenum,pos))
pos += blksize
startpos = pos
lastpos = filenum+1,0
return blkhash
except IOError:
print "No file:", blockpath % filenum
lastpos = filenum,pos
sqc.done.set()
return None
def coin_reward(height):
return float(int(coincfg(BLK_REWARD)) >> int(height // coincfg(HALF_BLKS)))/float(1e8)
def coin_reward(height):
return float(int(coincfg(BLK_REWARD)) >> int(height // coincfg(HALF_BLKS)))/float(1e8)