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663 lines
20 KiB
663 lines
20 KiB
#!/usr/bin/env python3
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import json
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import logging
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import os
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import re
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from collections import OrderedDict, defaultdict
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from pathlib import Path
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try:
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import requests
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except ImportError:
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requests = None
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log = logging.getLogger(__name__)
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ROOT = (Path(__file__).parent / "..").resolve()
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if os.environ.get("DEFS_DIR"):
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DEFS_DIR = Path(os.environ.get("DEFS_DIR")).resolve()
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else:
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DEFS_DIR = ROOT / "defs"
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def load_json(*path):
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"""Convenience function to load a JSON file from DEFS_DIR."""
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if len(path) == 1 and isinstance(path[0], Path):
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file = path[0]
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else:
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file = Path(DEFS_DIR, *path)
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return json.loads(file.read_text(), object_pairs_hook=OrderedDict)
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# ====== CoinsInfo ======
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class CoinsInfo(dict):
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"""Collection of information about all known kinds of coins.
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It contains the following lists:
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`bitcoin` for btc-like coins,
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`eth` for ethereum networks,
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`erc20` for ERC20 tokens,
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`nem` for NEM mosaics,
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`misc` for other networks.
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Accessible as a dict or by attribute: `info["misc"] == info.misc`
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"""
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def as_list(self):
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return sum(self.values(), [])
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def as_dict(self):
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return {coin["key"]: coin for coin in self.as_list()}
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def __getattr__(self, attr):
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if attr in self:
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return self[attr]
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else:
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raise AttributeError(attr)
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# ====== coin validation ======
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def check_type(val, types, nullable=False, empty=False, regex=None, choice=None):
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# check nullable
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if val is None:
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if nullable:
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return
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else:
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raise ValueError("Missing required value")
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# check type
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if not isinstance(val, types):
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raise TypeError("Wrong type (expected: {})".format(types))
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# check empty
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if isinstance(val, (list, dict)) and not empty and not val:
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raise ValueError("Empty collection")
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if isinstance(val, str) and not empty and not val:
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raise ValueError("Empty string")
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# check regex
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if regex is not None:
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if types is not str:
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raise TypeError("Wrong type for regex check")
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if not re.search(regex, val):
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raise ValueError("Value does not match regex {}".format(regex))
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# check choice
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if choice is not None and val not in choice:
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choice_str = ", ".join(choice)
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raise ValueError("Value not allowed, use one of: {}".format(choice_str))
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def check_key(key, types, optional=False, **kwargs):
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def do_check(coin):
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if key not in coin:
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if optional:
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return
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else:
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raise KeyError("{}: Missing key".format(key))
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try:
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check_type(coin[key], types, **kwargs)
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except Exception as e:
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raise ValueError("{}: {}".format(key, e)) from e
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return do_check
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BTC_CHECKS = [
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check_key("coin_name", str, regex=r"^[A-Z]"),
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check_key("coin_shortcut", str, regex=r"^t?[A-Z]{3,}$"),
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check_key("coin_label", str, regex=r"^[A-Z]"),
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check_key("website", str, regex=r"^https://.*[^/]$"),
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check_key("github", str, regex=r"^https://git(hu|la)b.com/.*[^/]$"),
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check_key("maintainer", str),
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check_key(
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"curve_name",
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str,
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choice=[
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"secp256k1",
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"secp256k1_decred",
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"secp256k1_groestl",
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"secp256k1_smart",
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],
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),
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check_key("address_type", int),
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check_key("address_type_p2sh", int),
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check_key("maxfee_kb", int),
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check_key("minfee_kb", int),
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check_key("hash_genesis_block", str, regex=r"^[0-9a-f]{64}$"),
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check_key("xprv_magic", int),
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check_key("xpub_magic", int),
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check_key("xpub_magic_segwit_p2sh", int, nullable=True),
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check_key("xpub_magic_segwit_native", int, nullable=True),
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check_key("slip44", int),
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check_key("segwit", bool),
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check_key("decred", bool),
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check_key("fork_id", int, nullable=True),
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check_key("force_bip143", bool),
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check_key("default_fee_b", dict),
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check_key("dust_limit", int),
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check_key("blocktime_seconds", int),
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check_key("signed_message_header", str),
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check_key("uri_prefix", str, regex=r"^[a-z-\.\+]+$"),
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check_key("min_address_length", int),
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check_key("max_address_length", int),
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check_key("bech32_prefix", str, regex=r"^[a-z-\.\+]+$", nullable=True),
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check_key("cashaddr_prefix", str, regex=r"^[a-z-\.\+]+$", nullable=True),
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]
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def validate_btc(coin):
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errors = []
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for check in BTC_CHECKS:
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try:
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check(coin)
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except Exception as e:
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errors.append(str(e))
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magics = [
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coin[k]
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for k in (
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"xprv_magic",
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"xpub_magic",
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"xpub_magic_segwit_p2sh",
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"xpub_magic_segwit_native",
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)
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if coin[k] is not None
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]
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# each of those must be unique
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# therefore length of list == length of set of unique values
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if len(magics) != len(set(magics)):
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errors.append("XPUB/XPRV magic numbers must be unique")
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if coin["address_type"] == coin["address_type_p2sh"]:
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errors.append("address_type must be distinct from address_type_p2sh")
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if not coin["maxfee_kb"] >= coin["minfee_kb"]:
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errors.append("max fee must not be smaller than min fee")
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if not coin["max_address_length"] >= coin["min_address_length"]:
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errors.append("max address length must not be smaller than min address length")
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if "testnet" in coin["coin_name"].lower() and coin["slip44"] != 1:
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errors.append("testnet coins must use slip44 coin type 1")
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if coin["segwit"]:
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if coin["bech32_prefix"] is None:
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errors.append("bech32_prefix must be defined for segwit-enabled coin")
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if coin["xpub_magic_segwit_p2sh"] is None:
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errors.append(
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"xpub_magic_segwit_p2sh must be defined for segwit-enabled coin"
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)
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else:
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if coin["bech32_prefix"] is not None:
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errors.append("bech32_prefix must not be defined for segwit-disabled coin")
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if coin["xpub_magic_segwit_p2sh"] is not None:
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errors.append(
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"xpub_magic_segwit_p2sh must not be defined for segwit-disabled coin"
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)
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return errors
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# ======= Coin json loaders =======
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def _load_btc_coins():
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"""Load btc-like coins from `bitcoin/*.json`"""
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coins = []
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for file in DEFS_DIR.glob("bitcoin/*.json"):
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coin = load_json(file)
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coin.update(
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name=coin["coin_label"],
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shortcut=coin["coin_shortcut"],
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key="bitcoin:{}".format(coin["coin_shortcut"]),
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icon=str(file.with_suffix(".png")),
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)
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coins.append(coin)
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return coins
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def _load_ethereum_networks():
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"""Load ethereum networks from `ethereum/networks.json`"""
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chains_path = DEFS_DIR / "ethereum" / "chains" / "_data" / "chains"
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networks = []
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for chain in sorted(
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chains_path.glob("eip155-*.json"),
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key=lambda x: int(x.stem.replace("eip155-", "")),
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):
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chain_data = load_json(chain)
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shortcut = chain_data["nativeCurrency"]["symbol"]
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name = chain_data["name"]
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is_testnet = "testnet" in name.lower()
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if is_testnet:
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slip44 = 1
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else:
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slip44 = chain_data.get("slip44", 60)
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if is_testnet and not shortcut.lower().startswith("t"):
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shortcut = "t" + shortcut
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rskip60 = shortcut in ("RBTC", "TRBTC")
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# strip out bullcrap in network naming
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if "mainnet" in name.lower():
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name = re.sub(r" mainnet.*$", "", name, flags=re.IGNORECASE)
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network = dict(
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chain=chain_data["shortName"],
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chain_id=chain_data["chainId"],
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slip44=slip44,
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shortcut=shortcut,
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name=name,
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rskip60=rskip60,
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url=chain_data["infoURL"],
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key=f"eth:{shortcut}",
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)
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networks.append(network)
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return networks
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def _load_erc20_tokens():
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"""Load ERC20 tokens from `ethereum/tokens` submodule."""
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networks = _load_ethereum_networks()
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tokens = []
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for network in networks:
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chain = network["chain"]
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chain_path = DEFS_DIR / "ethereum" / "tokens" / "tokens" / chain
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for file in sorted(chain_path.glob("*.json")):
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token = load_json(file)
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token.update(
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chain=chain,
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chain_id=network["chain_id"],
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address_bytes=bytes.fromhex(token["address"][2:]),
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shortcut=token["symbol"],
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key="erc20:{}:{}".format(chain, token["symbol"]),
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)
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tokens.append(token)
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return tokens
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def _load_nem_mosaics():
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"""Loads NEM mosaics from `nem/nem_mosaics.json`"""
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mosaics = load_json("nem/nem_mosaics.json")
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for mosaic in mosaics:
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shortcut = mosaic["ticker"].strip()
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mosaic.update(shortcut=shortcut, key="nem:{}".format(shortcut))
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return mosaics
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def _load_misc():
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"""Loads miscellaneous networks from `misc/misc.json`"""
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others = load_json("misc/misc.json")
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for other in others:
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other.update(key="misc:{}".format(other["shortcut"]))
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return others
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def _load_fido_apps():
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"""Load FIDO apps from `fido/*.json`"""
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apps = []
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for file in sorted(DEFS_DIR.glob("fido/*.json")):
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app_name = file.stem.lower()
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app = load_json(file)
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app.setdefault("use_sign_count", None)
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app.setdefault("use_self_attestation", None)
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app.setdefault("u2f", [])
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app.setdefault("webauthn", [])
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icon_file = file.with_suffix(".png")
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if not icon_file.exists():
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icon_path = None
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else:
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icon_path = str(icon_file)
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app.update(key=app_name, icon=icon_path)
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apps.append(app)
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return apps
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# ====== support info ======
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RELEASES_URL = "https://data.trezor.io/firmware/{}/releases.json"
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MISSING_SUPPORT_MEANS_NO = ("connect", "suite")
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VERSIONED_SUPPORT_INFO = ("trezor1", "trezor2")
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def get_support_data():
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"""Get raw support data from `support.json`."""
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return load_json("support.json")
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def latest_releases():
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"""Get latest released firmware versions for Trezor 1 and 2"""
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if not requests:
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raise RuntimeError("requests library is required for getting release info")
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latest = {}
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for v in ("1", "2"):
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releases = requests.get(RELEASES_URL.format(v)).json()
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latest["trezor" + v] = max(tuple(r["version"]) for r in releases)
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return latest
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def is_token(coin):
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return coin["key"].startswith("erc20:")
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def support_info_single(support_data, coin):
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"""Extract a support dict from `support.json` data.
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Returns a dict of support values for each "device", i.e., `support.json`
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top-level key.
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The support value for each device is determined in order of priority:
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* if the coin has an entry in `unsupported`, its support is `False`
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* if the coin has an entry in `supported` its support is that entry
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(usually a version string, or `True` for connect/suite)
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* if the coin doesn't have an entry, its support status is `None`
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"""
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support_info = {}
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key = coin["key"]
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for device, values in support_data.items():
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if key in values["unsupported"]:
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support_value = False
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elif key in values["supported"]:
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support_value = values["supported"][key]
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elif device in MISSING_SUPPORT_MEANS_NO:
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support_value = False
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else:
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support_value = None
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support_info[device] = support_value
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return support_info
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def support_info(coins):
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"""Generate Trezor support information.
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Takes a collection of coins and generates a support-info entry for each.
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The support-info is a dict with keys based on `support.json` keys.
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These are usually: "trezor1", "trezor2", "connect" and "suite".
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The `coins` argument can be a `CoinsInfo` object, a list or a dict of
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coin items.
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Support information is taken from `support.json`.
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"""
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if isinstance(coins, CoinsInfo):
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coins = coins.as_list()
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elif isinstance(coins, dict):
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coins = coins.values()
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support_data = get_support_data()
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support = {}
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for coin in coins:
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support[coin["key"]] = support_info_single(support_data, coin)
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return support
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# ====== data cleanup functions ======
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def _ensure_mandatory_values(coins):
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"""Checks that every coin has the mandatory fields: name, shortcut, key"""
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for coin in coins:
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if not all(coin.get(k) for k in ("name", "shortcut", "key")):
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raise ValueError(coin)
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def symbol_from_shortcut(shortcut):
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symsplit = shortcut.split(" ", maxsplit=1)
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return symsplit[0], symsplit[1] if len(symsplit) > 1 else ""
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def mark_duplicate_shortcuts(coins):
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"""Finds coins with identical symbols and sets their `duplicate` field.
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"Symbol" here means the first part of `shortcut` (separated by space),
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so, e.g., "BTL (Battle)" and "BTL (Bitlle)" have the same symbol "BTL".
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The result of this function is a dictionary of _buckets_, each of which is
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indexed by the duplicated symbol, or `_override`. The `_override` bucket will
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contain all coins that are set to `true` in `duplicity_overrides.json`.
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Each coin in every bucket will have its "duplicate" property set to True, unless
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it's explicitly marked as `false` in `duplicity_overrides.json`.
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"""
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dup_symbols = defaultdict(list)
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for coin in coins:
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symbol, _ = symbol_from_shortcut(coin["shortcut"].lower())
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dup_symbols[symbol].append(coin)
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dup_symbols = {k: v for k, v in dup_symbols.items() if len(v) > 1}
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# mark duplicate symbols
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for values in dup_symbols.values():
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for coin in values:
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coin["duplicate"] = True
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return dup_symbols
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def apply_duplicity_overrides(coins):
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overrides = load_json("duplicity_overrides.json")
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override_bucket = []
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for coin in coins:
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override_value = overrides.get(coin["key"])
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if override_value is True:
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override_bucket.append(coin)
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if override_value is not None:
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coin["duplicate"] = override_value
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return override_bucket
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def deduplicate_erc20(buckets, networks):
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"""Apply further processing to ERC20 duplicate buckets.
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This function works on results of `mark_duplicate_shortcuts`.
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Buckets that contain at least one non-token are ignored - symbol collisions
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with non-tokens always apply.
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Otherwise the following rules are applied:
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1. If _all tokens_ in the bucket have shortcuts with distinct suffixes, e.g.,
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`CAT (BitClave)` and `CAT (Blockcat)`, the bucket is cleared - all are considered
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non-duplicate.
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(If even one token in the bucket _does not_ have a distinct suffix, e.g.,
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`MIT` and `MIT (Mychatcoin)`, this rule does not apply and ALL tokens in the bucket
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are still considered duplicate.)
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2. If there is only one "main" token in the bucket, the bucket is cleared.
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That means that all other tokens must either be on testnets, or they must be marked
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as deprecated, with a deprecation pointing to the "main" token.
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"""
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testnet_networks = {n["chain"] for n in networks if "Testnet" in n["name"]}
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def clear_bucket(bucket):
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# allow all coins, except those that are explicitly marked through overrides
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for coin in bucket:
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coin["duplicate"] = False
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for bucket in buckets.values():
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# Only check buckets that contain purely ERC20 tokens. Collision with
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# a non-token is always forbidden.
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if not all(is_token(c) for c in bucket):
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continue
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splits = (symbol_from_shortcut(coin["shortcut"]) for coin in bucket)
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suffixes = {suffix for _, suffix in splits}
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# if 1. all suffixes are distinct and 2. none of them are empty
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if len(suffixes) == len(bucket) and all(suffixes):
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clear_bucket(bucket)
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continue
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# protected categories:
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testnets = [coin for coin in bucket if coin["chain"] in testnet_networks]
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deprecated_by_same = [
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coin
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for coin in bucket
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if "deprecation" in coin
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and any(
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other["address"] == coin["deprecation"]["new_address"]
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for other in bucket
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)
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]
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remaining = [
|
|
coin
|
|
for coin in bucket
|
|
if coin not in testnets and coin not in deprecated_by_same
|
|
]
|
|
if len(remaining) <= 1:
|
|
for coin in deprecated_by_same:
|
|
deprecated_symbol = "[deprecated] " + coin["symbol"]
|
|
coin["shortcut"] = coin["symbol"] = deprecated_symbol
|
|
coin["key"] += ":deprecated"
|
|
clear_bucket(bucket)
|
|
|
|
|
|
def deduplicate_keys(all_coins):
|
|
dups = defaultdict(list)
|
|
for coin in all_coins:
|
|
dups[coin["key"]].append(coin)
|
|
|
|
for coins in dups.values():
|
|
if len(coins) <= 1:
|
|
continue
|
|
for i, coin in enumerate(coins):
|
|
if is_token(coin):
|
|
coin["key"] += ":" + coin["address"][2:6].lower() # first 4 hex chars
|
|
elif "chain_id" in coin:
|
|
coin["key"] += ":" + str(coin["chain_id"])
|
|
else:
|
|
coin["key"] += ":{}".format(i)
|
|
coin["dup_key_nontoken"] = True
|
|
|
|
|
|
def fill_blockchain_links(all_coins):
|
|
blockchain_links = load_json("blockchain_link.json")
|
|
for coins in all_coins.values():
|
|
for coin in coins:
|
|
link = blockchain_links.get(coin["key"])
|
|
coin["blockchain_link"] = link
|
|
if link and link["type"] == "blockbook":
|
|
coin["blockbook"] = link["url"]
|
|
else:
|
|
coin["blockbook"] = []
|
|
|
|
|
|
def _btc_sort_key(coin):
|
|
if coin["name"] in ("Bitcoin", "Testnet", "Regtest"):
|
|
return "000000" + coin["name"]
|
|
else:
|
|
return coin["name"]
|
|
|
|
|
|
def collect_coin_info():
|
|
"""Returns all definition as dict organized by coin type.
|
|
`coins` for btc-like coins,
|
|
`eth` for ethereum networks,
|
|
`erc20` for ERC20 tokens,
|
|
`nem` for NEM mosaics,
|
|
`misc` for other networks.
|
|
"""
|
|
all_coins = CoinsInfo(
|
|
bitcoin=_load_btc_coins(),
|
|
eth=_load_ethereum_networks(),
|
|
erc20=_load_erc20_tokens(),
|
|
nem=_load_nem_mosaics(),
|
|
misc=_load_misc(),
|
|
)
|
|
|
|
for coins in all_coins.values():
|
|
_ensure_mandatory_values(coins)
|
|
|
|
fill_blockchain_links(all_coins)
|
|
|
|
return all_coins
|
|
|
|
|
|
def sort_coin_infos(all_coins):
|
|
for k, coins in all_coins.items():
|
|
if k == "bitcoin":
|
|
coins.sort(key=_btc_sort_key)
|
|
elif k == "nem":
|
|
# do not sort nem
|
|
pass
|
|
elif k == "eth":
|
|
# sort ethereum networks by chain_id
|
|
coins.sort(key=lambda c: c["chain_id"])
|
|
else:
|
|
coins.sort(key=lambda c: c["key"].upper())
|
|
|
|
|
|
def coin_info_with_duplicates():
|
|
"""Collects coin info, detects duplicates but does not remove them.
|
|
|
|
Returns the CoinsInfo object and duplicate buckets.
|
|
"""
|
|
all_coins = collect_coin_info()
|
|
coin_list = all_coins.as_list()
|
|
# generate duplicity buckets based on shortcuts
|
|
buckets = mark_duplicate_shortcuts(all_coins.as_list())
|
|
# apply further processing to ERC20 tokens, generate deprecations etc.
|
|
deduplicate_erc20(buckets, all_coins.eth)
|
|
# ensure the whole list has unique keys (taking into account changes from deduplicate_erc20)
|
|
deduplicate_keys(coin_list)
|
|
# apply duplicity overrides
|
|
buckets["_override"] = apply_duplicity_overrides(coin_list)
|
|
sort_coin_infos(all_coins)
|
|
|
|
return all_coins, buckets
|
|
|
|
|
|
def coin_info():
|
|
"""Collects coin info, fills out support info and returns the result.
|
|
|
|
Does not auto-delete duplicates. This should now be based on support info.
|
|
"""
|
|
all_coins, _ = coin_info_with_duplicates()
|
|
# all_coins["erc20"] = [
|
|
# coin for coin in all_coins["erc20"] if not coin.get("duplicate")
|
|
# ]
|
|
return all_coins
|
|
|
|
|
|
def fido_info():
|
|
"""Returns info about known FIDO/U2F apps."""
|
|
return _load_fido_apps()
|
|
|
|
|
|
def search(coins, keyword):
|
|
kwl = keyword.lower()
|
|
if isinstance(coins, CoinsInfo):
|
|
coins = coins.as_list()
|
|
|
|
for coin in coins:
|
|
key = coin["key"].lower()
|
|
name = coin["name"].lower()
|
|
shortcut = coin["shortcut"].lower()
|
|
symbol, suffix = symbol_from_shortcut(shortcut)
|
|
if (
|
|
kwl == key
|
|
or kwl in name
|
|
or kwl == shortcut
|
|
or kwl == symbol
|
|
or kwl in suffix
|
|
):
|
|
yield coin
|