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from typing import Optional
from ._eip712_base import (
is_address,
is_block_number,
is_bytes16,
is_chain_id,
is_eth_privkey,
is_signature,
recover,
sign,
)
[docs]
def _create_eip712_market_create(
chainId: int,
verifyingContract: bytes,
member: bytes,
created: int,
marketId: bytes,
coin: bytes,
terms: str,
meta: Optional[str],
maker: bytes,
providerSecurity: int,
consumerSecurity: int,
marketFee: int,
) -> dict:
"""
:param chainId:
:param verifyingContract:
:param member:
:param created:
:param marketId:
:param coin:
:param terms:
:param meta:
:param maker:
:param providerSecurity:
:param consumerSecurity:
:param marketFee:
:return:
"""
assert is_chain_id(chainId)
assert is_address(verifyingContract)
assert is_address(member)
assert is_block_number(created)
assert is_bytes16(marketId)
assert is_address(coin)
assert type(terms) == str
assert meta is None or type(meta) == str
assert is_address(maker)
assert type(providerSecurity) == int
assert type(consumerSecurity) == int
assert type(marketFee) == int
# FIXME: add "coin" in below once we have done that in XBRTypes
data = {
"types": {
"EIP712Domain": [
{"name": "name", "type": "string"},
{"name": "version", "type": "string"},
],
"EIP712MarketCreate": [
{"name": "chainId", "type": "uint256"},
{"name": "verifyingContract", "type": "address"},
{"name": "member", "type": "address"},
{"name": "created", "type": "uint256"},
{"name": "marketId", "type": "bytes16"},
{"name": "coin", "type": "address"},
{"name": "terms", "type": "string"},
{"name": "meta", "type": "string"},
{"name": "maker", "type": "address"},
{
"name": "marketFee",
"type": "uint256",
},
],
},
"primaryType": "EIP712MarketCreate",
"domain": {
"name": "XBR",
"version": "1",
},
"message": {
"chainId": chainId,
"verifyingContract": verifyingContract,
"member": member,
"created": created,
"marketId": marketId,
"coin": coin,
"terms": terms,
"meta": meta or "",
"maker": maker,
"marketFee": marketFee,
},
}
return data
[docs]
def sign_eip712_market_create(
eth_privkey: bytes,
chainId: int,
verifyingContract: bytes,
member: bytes,
created: int,
marketId: bytes,
coin: bytes,
terms: str,
meta: str,
maker: bytes,
providerSecurity: int,
consumerSecurity: int,
marketFee: int,
) -> bytes:
"""
:param eth_privkey: Ethereum address of buyer (a raw 20 bytes Ethereum address).
:type eth_privkey: bytes
:return: The signature according to EIP712 (32+32+1 raw bytes).
:rtype: bytes
"""
assert is_eth_privkey(eth_privkey)
data = _create_eip712_market_create(
chainId,
verifyingContract,
member,
created,
marketId,
coin,
terms,
meta,
maker,
providerSecurity,
consumerSecurity,
marketFee,
)
return sign(eth_privkey, data)
[docs]
def recover_eip712_market_create(
chainId: int,
verifyingContract: bytes,
member: bytes,
created: int,
marketId: bytes,
coin: bytes,
terms: str,
meta: str,
maker: bytes,
providerSecurity: int,
consumerSecurity: int,
marketFee: int,
signature: bytes,
) -> bytes:
"""
Recover the signer address the given EIP712 signature was signed with.
:return: The (computed) signer address the signature was signed with.
:rtype: bytes
"""
assert is_signature(signature)
data = _create_eip712_market_create(
chainId,
verifyingContract,
member,
created,
marketId,
coin,
terms,
meta,
maker,
providerSecurity,
consumerSecurity,
marketFee,
)
return recover(data, signature)