#!/usr/bin/env python3 """Fetch information about coins and tokens supported by Trezor and update it in coins_details.json.""" import os import time import json import logging import requests import coin_info LOG = logging.getLogger(__name__) OPTIONAL_KEYS = ("links", "notes", "wallet") ALLOWED_SUPPORT_STATUS = ("yes", "no", "planned", "soon") OVERRIDES = coin_info.load_json("coins_details.override.json") VERSIONS = coin_info.latest_releases() COINMAKETCAP_CACHE = os.path.join(os.path.dirname(__file__), "coinmarketcap.json") COINMARKETCAP_TICKERS_URL = ( "https://api.coinmarketcap.com/v2/ticker/?start={}&convert=USD&limit=100" ) COINMARKETCAP_GLOBAL_URL = "https://api.coinmarketcap.com/v2/global" def coinmarketcap_init(): try: mtime = os.path.getmtime(COINMAKETCAP_CACHE) if mtime > time.time() - 3600: print("Using cached market cap data") with open(COINMAKETCAP_CACHE) as f: return json.load(f) except Exception: pass print("Updating coins from coinmarketcap") total = None ctr = 0 coin_data = {} while total is None or ctr < total: url = COINMARKETCAP_TICKERS_URL.format(ctr + 1) data = requests.get(url).json() if total is None: total = data["metadata"]["num_cryptocurrencies"] ctr += len(data["data"]) for coin in data["data"].values(): slug = coin["website_slug"] market_cap = coin["quotes"]["USD"]["market_cap"] if market_cap is not None: coin_data[slug] = int(market_cap) print("Fetched {} of {} coins".format(ctr, total)) time.sleep(1) with open(COINMAKETCAP_CACHE, "w") as f: json.dump(coin_data, f) return coin_data MARKET_CAPS = coinmarketcap_init() def marketcap(coin): cap = None if "coinmarketcap_alias" in coin: cap = MARKET_CAPS.get(coin["coinmarketcap_alias"]) if cap is None: slug = coin["name"].replace(" ", "-").lower() cap = MARKET_CAPS.get(slug) if cap is None: cap = MARKET_CAPS.get(coin["shortcut"].lower()) return cap def update_marketcaps(coins): for coin in coins.values(): coin["marketcap_usd"] = marketcap(coin) or 0 def summary(coins): t1_coins = 0 t2_coins = 0 supported_marketcap = 0 for coin in coins.values(): if coin.get("hidden"): continue t1_enabled = coin["t1_enabled"] == "yes" t2_enabled = coin["t2_enabled"] == "yes" if t1_enabled: t1_coins += 1 if t2_enabled: t2_coins += 1 if t1_enabled or t2_enabled: supported_marketcap += coin.get("marketcap_usd", 0) total_marketcap = None try: ret = requests.get(COINMARKETCAP_GLOBAL_URL).json() total_marketcap = int(ret["data"]["quotes"]["USD"]["total_market_cap"]) except: pass return dict( updated_at=int(time.time()), updated_at_readable=time.asctime(), t1_coins=t1_coins, t2_coins=t2_coins, marketcap_usd=supported_marketcap, total_marketcap_usd=total_marketcap, ) def _is_supported(support, trezor_version): version = VERSIONS[str(trezor_version)] nominal = support.get("trezor" + str(trezor_version)) if nominal is None: return "no" elif isinstance(nominal, bool): return "yes" if nominal else "no" try: nominal_version = tuple(map(int, nominal.split("."))) return "yes" if nominal_version <= version else "soon" except ValueError: return nominal def _webwallet_support(coin, support): """Check the "webwallet" support property. If set, check that at least one of the backends run on trezor.io. If yes, assume we support the coin in our wallet. Otherwise it's probably working with a custom backend, which means don't link to our wallet. """ if not support.get("webwallet"): return False return any(".trezor.io" in url for url in coin["blockbook"] + coin["bitcore"]) def update_coins(coins, support_info): res = {} for coin in coins: key = coin["key"] support = support_info[key] details = dict( type="coin", shortcut=coin["shortcut"], name=coin["coin_label"], links=dict(Homepage=coin["website"], Github=coin["github"]), t1_enabled=_is_supported(support, 1), t2_enabled=_is_supported(support, 2), wallet={}, ) if _webwallet_support(coin, support): details["wallet"]["Trezor"] = "https://wallet.trezor.io" if support.get("other"): details["wallet"].update(support["other"]) res[key] = details return res def update_erc20(coins, support_info): # TODO skip disabled networks? res = {} for coin in coins: key = coin["key"] support = support_info[key] details = dict( type="erc20", network=coin["chain"], address=coin["address"], shortcut=coin["shortcut"], name=coin["name"], links={}, wallet=dict( MyCrypto="https://mycrypto.com", MyEtherWallet="https://www.myetherwallet.com", ), t1_enabled=support["trezor1"], t2_enabled=support["trezor2"], ) if coin.get("website"): details["links"]["Homepage"] = coin["website"] if coin.get("social", {}).get("github"): details["links"]["Github"] = coin["social"]["github"] res[key] = details return res def update_simple(coins, support_info, type): res = {} for coin in coins: key = coin["key"] support = support_info[key] details = dict( name=coin["name"], shortcut=coin["shortcut"], type=type, t1_enabled=_is_supported(support, 1), t2_enabled=_is_supported(support, 2), ) for k in OPTIONAL_KEYS: if k in coin: details[k] = coin[k] res[key] = details return res def update_ethereum_networks(coins, support_info): res = update_simple(coins, support_info, "coin") for coin in coins: res[coin["key"]].update( wallet=dict( MyCrypto="https://mycrypto.com", MyEtherWallet="https://www.myetherwallet.com", ), links=dict(Homepage=coin.get("url")), ) return res def check_missing_data(coins): for k, coin in coins.items(): hide = False if "Homepage" not in coin.get("links", {}): print("%s: Missing homepage" % k) hide = True if coin["t1_enabled"] not in ALLOWED_SUPPORT_STATUS: print("%s: Unknown t1_enabled" % k) hide = True if coin["t2_enabled"] not in ALLOWED_SUPPORT_STATUS: print("%s: Unknown t2_enabled" % k) hide = True if ( "Trezor" in coin.get("wallet", {}) and coin["wallet"]["Trezor"] != "https://wallet.trezor.io" ): print("%s: Strange URL for Trezor Wallet" % k) hide = True if len(coin.get("wallet", {})) == 0: print("%s: Missing wallet" % k) if "Testnet" in coin["name"]: print("%s: Hiding testnet" % k) hide = True if hide: if coin.get("hidden") != 1: print("%s: HIDING COIN!" % k) # If any of important detail is missing, hide coin from list coin["hidden"] = 1 if not hide and coin.get("hidden"): print("%s: Details are OK, but coin is still hidden" % k) # summary of hidden coins for k, coin in coins.items(): if coin.get("hidden") == 1: print("%s: Coin is hidden" % k) def apply_overrides(coins): for key, override in OVERRIDES.items(): if key not in coins: LOG.warning("override without coin: {}".format(key)) continue def recursive_update(orig, new): if isinstance(new, dict) and isinstance(orig, dict): for k, v in new.items(): orig[k] = recursive_update(orig.get(k), v) else: return new coin = coins[key] recursive_update(coin, override) if __name__ == "__main__": defs = coin_info.get_all() support_info = coin_info.support_info(defs, erc20_versions=VERSIONS) coins = {} coins.update(update_coins(defs.coins, support_info)) coins.update(update_erc20(defs.erc20, support_info)) coins.update(update_ethereum_networks(defs.eth, support_info)) coins.update(update_simple(defs.nem, support_info, "mosaic")) coins.update(update_simple(defs.misc, support_info, "coin")) apply_overrides(coins) update_marketcaps(coins) check_missing_data(coins) info = summary(coins) details = dict(coins=coins, info=info) print(json.dumps(info, sort_keys=True, indent=4)) with open(os.path.join(coin_info.DEFS_DIR, "coins_details.json"), "w") as f: json.dump(details, f, sort_keys=True, indent=4)