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Support for EOS deposits / withdrawals + encrypted private key storage

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@Someguy123 Someguy123 released this 02 Jun 23:46
· 68 commits to master since this release
1.1.0
1bbccb9

EOS Support - Deposits and Withdrawals

  • Created EOS coin handler (enabled by default)
    • EOSMixin - contains shared code between loader/manager such as the Cleos instance,
      default contracts etc.
    • EOSLoader - Loads actions for a given EOS account, cleans them into Deposit format,
      support for EOS tokens
    • EOSManager - For sending EOS, username validation and checking account balances
      (uses new private key store functionality)
  • Added requirement for libeospy by EOS NYC, used for interacting with EOS nodes
  • EOS node settings can be configured from database using a Coin with the symbol EOS
  • Tokens can be added by setting the coin type to "EOS Token" from admin
  • Tokens without a default in EOSMixin MUST have a settings JSON containing the EOS
    contract account, e.g. {"contract": "eosio.token"}
  • If no node is configured, uses https://eos.greymass.com:443 by default

Encrypted private key storage in the database

  • CryptoKeyPair model for storing public/private keys in the database, for coins without a decent wallet API
  • Private keys are encrypted with AES-128 using Fernet when a CryptoKeyPair is saved
  • Admin page for adding new key pair's, private keys are only shown in encrypted form from the panel
  • Management command for generating a new encryption key

General Cleanup and improvements

  • Copied a lot of the BitcoinMixin code into SettingsMixin and generic-ified it for use in all
    coin handlers.
    • SettingsMixin allows for both coin loaders and managers to easily access their Coin's
      settings, as well as automatically merging in any settings from settings.COIND_RPC
      (can be disabled by overriding use_coind_settings from child class)
    • TODO: BitcoinMixin should now extend SettingsMixin and only override the methods/attributes
      it needs to.
  • The load_txs command now has a --coins option, so you can scan only specified coins,
    e.g. ./manage.py load_txs --coins LTC,EOS
  • Added new exception MissingTokenMetadata for coin handlers that require metadata such as an account
    to send/receive from, or custom settings like a contract
  • Refactored coin handler exceptions so they all extend CoinHandlerException for blanket catching all
    coin handler specific exceptions
  • The shared Steem instance now has call retries capped at 5 attempts, and a lower timeout of
    20s (instead of default 60s). This will help prevent any permanent hanging caused by bad nodes.
  • Various other small cleanups and fixes
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