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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_join(
chainId: int,
verifyingContract: bytes,
member: bytes,
joined: int,
marketId: bytes,
actorType: int,
meta: Optional[str],
) -> dict:
"""
:param chainId:
:param verifyingContract:
:param member:
:param joined:
:param marketId:
:param actorType:
:param meta:
:return:
"""
assert is_chain_id(chainId)
assert is_address(verifyingContract)
assert is_address(member)
assert is_block_number(joined)
assert is_bytes16(marketId)
assert type(actorType) == int
assert meta is None or type(meta) == str
data = {
"types": {
"EIP712Domain": [
{"name": "name", "type": "string"},
{"name": "version", "type": "string"},
],
"EIP712MarketJoin": [
{"name": "chainId", "type": "uint256"},
{"name": "verifyingContract", "type": "address"},
{"name": "member", "type": "address"},
{"name": "joined", "type": "uint256"},
{"name": "marketId", "type": "bytes16"},
{"name": "actorType", "type": "uint8"},
{
"name": "meta",
"type": "string",
},
],
},
"primaryType": "EIP712MarketJoin",
"domain": {
"name": "XBR",
"version": "1",
},
"message": {
"chainId": chainId,
"verifyingContract": verifyingContract,
"member": member,
"joined": joined,
"marketId": marketId,
"actorType": actorType,
"meta": meta or "",
},
}
return data
[docs]
def sign_eip712_market_join(
eth_privkey: bytes,
chainId: int,
verifyingContract: bytes,
member: bytes,
joined: int,
marketId: bytes,
actorType: int,
meta: str,
) -> 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_join(chainId, verifyingContract, member, joined, marketId, actorType, meta)
return sign(eth_privkey, data)
[docs]
def recover_eip712_market_join(
chainId: int,
verifyingContract: bytes,
member: bytes,
joined: int,
marketId: bytes,
actorType: int,
meta: str,
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_join(chainId, verifyingContract, member, joined, marketId, actorType, meta)
return recover(data, signature)