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from typing import Optional
from ._eip712_base import sign, recover, is_address, is_block_number, \
is_chain_id, is_eth_privkey, is_signature
[docs]def _create_eip712_member_register(chainId: int, verifyingContract: bytes, member: bytes, registered: int,
eula: str, profile: Optional[str]) -> dict:
"""
:param chainId:
:param verifyingContract:
:param member:
:param registered:
:param eula:
:param profile:
:return:
"""
assert is_chain_id(chainId)
assert is_address(verifyingContract)
assert is_address(member)
assert is_block_number(registered)
assert type(eula) == str
assert profile is None or type(profile) == str
data = {
'types': {
'EIP712Domain': [
{
'name': 'name',
'type': 'string'
},
{
'name': 'version',
'type': 'string'
},
],
'EIP712MemberRegister': [
{
'name': 'chainId',
'type': 'uint256'
},
{
'name': 'verifyingContract',
'type': 'address'
},
{
'name': 'member',
'type': 'address'
},
{
'name': 'registered',
'type': 'uint256'
},
{
'name': 'eula',
'type': 'string'
},
{
'name': 'profile',
'type': 'string'
},
]
},
'primaryType': 'EIP712MemberRegister',
'domain': {
'name': 'XBR',
'version': '1',
},
'message': {
'chainId': chainId,
'verifyingContract': verifyingContract,
'member': member,
'registered': registered,
'eula': eula,
'profile': profile or '',
}
}
return data
[docs]def sign_eip712_member_register(eth_privkey: bytes, chainId: int, verifyingContract: bytes, member: bytes,
registered: int, eula: Optional[str], profile: 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_member_register(chainId, verifyingContract, member, registered, eula, profile)
return sign(eth_privkey, data)
[docs]def recover_eip712_member_register(chainId: int, verifyingContract: bytes, member: bytes, registered: int,
eula: str, profile: Optional[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_member_register(chainId, verifyingContract, member, registered, eula, profile)
return recover(data, signature)