file reorganization with top-level module

electrum/constants.py

@@ -0,0 +1,133 @@
+# -*- coding: utf-8 -*-
+#
+# Electrum - lightweight Bitcoin client
+# Copyright (C) 2018 The Electrum developers
+#
+# Permission is hereby granted, free of charge, to any person
+# obtaining a copy of this software and associated documentation files
+# (the "Software"), to deal in the Software without restriction,
+# including without limitation the rights to use, copy, modify, merge,
+# publish, distribute, sublicense, and/or sell copies of the Software,
+# and to permit persons to whom the Software is furnished to do so,
+# subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be
+# included in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+# BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+# ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+
+import os
+import json
+
+
+def read_json(filename, default):
+    path = os.path.join(os.path.dirname(__file__), filename)
+    try:
+        with open(path, 'r') as f:
+            r = json.loads(f.read())
+    except:
+        r = default
+    return r
+
+
+class BitcoinMainnet:
+
+    TESTNET = False
+    WIF_PREFIX = 0x80
+    ADDRTYPE_P2PKH = 0
+    ADDRTYPE_P2SH = 5
+    SEGWIT_HRP = "bc"
+    GENESIS = "000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f"
+    DEFAULT_PORTS = {'t': '50001', 's': '50002'}
+    DEFAULT_SERVERS = read_json('servers.json', {})
+    CHECKPOINTS = read_json('checkpoints.json', [])
+
+    XPRV_HEADERS = {
+        'standard':    0x0488ade4,  # xprv
+        'p2wpkh-p2sh': 0x049d7878,  # yprv
+        'p2wsh-p2sh':  0x0295b005,  # Yprv
+        'p2wpkh':      0x04b2430c,  # zprv
+        'p2wsh':       0x02aa7a99,  # Zprv
+    }
+    XPUB_HEADERS = {
+        'standard':    0x0488b21e,  # xpub
+        'p2wpkh-p2sh': 0x049d7cb2,  # ypub
+        'p2wsh-p2sh':  0x0295b43f,  # Ypub
+        'p2wpkh':      0x04b24746,  # zpub
+        'p2wsh':       0x02aa7ed3,  # Zpub
+    }
+    BIP44_COIN_TYPE = 0
+
+
+class BitcoinTestnet:
+
+    TESTNET = True
+    WIF_PREFIX = 0xef
+    ADDRTYPE_P2PKH = 111
+    ADDRTYPE_P2SH = 196
+    SEGWIT_HRP = "tb"
+    GENESIS = "000000000933ea01ad0ee984209779baaec3ced90fa3f408719526f8d77f4943"
+    DEFAULT_PORTS = {'t': '51001', 's': '51002'}
+    DEFAULT_SERVERS = read_json('servers_testnet.json', {})
+    CHECKPOINTS = read_json('checkpoints_testnet.json', [])
+
+    XPRV_HEADERS = {
+        'standard':    0x04358394,  # tprv
+        'p2wpkh-p2sh': 0x044a4e28,  # uprv
+        'p2wsh-p2sh':  0x024285b5,  # Uprv
+        'p2wpkh':      0x045f18bc,  # vprv
+        'p2wsh':       0x02575048,  # Vprv
+    }
+    XPUB_HEADERS = {
+        'standard':    0x043587cf,  # tpub
+        'p2wpkh-p2sh': 0x044a5262,  # upub
+        'p2wsh-p2sh':  0x024289ef,  # Upub
+        'p2wpkh':      0x045f1cf6,  # vpub
+        'p2wsh':       0x02575483,  # Vpub
+    }
+    BIP44_COIN_TYPE = 1
+
+
+class BitcoinRegtest(BitcoinTestnet):
+
+    SEGWIT_HRP = "bcrt"
+    GENESIS = "0f9188f13cb7b2c71f2a335e3a4fc328bf5beb436012afca590b1a11466e2206"
+    DEFAULT_SERVERS = read_json('servers_regtest.json', {})
+    CHECKPOINTS = []
+
+
+class BitcoinSimnet(BitcoinTestnet):
+
+    SEGWIT_HRP = "sb"
+    GENESIS = "683e86bd5c6d110d91b94b97137ba6bfe02dbbdb8e3dff722a669b5d69d77af6"
+    DEFAULT_SERVERS = read_json('servers_regtest.json', {})
+    CHECKPOINTS = []
+
+
+# don't import net directly, import the module instead (so that net is singleton)
+net = BitcoinMainnet
+
+def set_simnet():
+    global net
+    net = BitcoinSimnet
+
+def set_mainnet():
+    global net
+    net = BitcoinMainnet
+
+
+def set_testnet():
+    global net
+    net = BitcoinTestnet
+
+
+def set_regtest():
+    global net
+    net = BitcoinRegtest