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from typing import Optional
from ._eip712_base import sign, recover, is_address, is_bytes16, is_eth_privkey, \
is_signature, is_chain_id, is_block_number
[docs]def _create_eip712_consent(chainId: int, verifyingContract: bytes, member: bytes, updated: int,
marketId: bytes, delegate: bytes, delegateType: int, apiCatalog: bytes,
consent: bool, servicePrefix: Optional[str]) -> dict:
"""
:param chainId:
:param verifyingContract:
:param member:
:param updated:
:param marketId:
:param delegate:
:param delegateType:
:param apiCatalog:
:param consent:
:param servicePrefix:
:return:
"""
assert is_chain_id(chainId)
assert is_address(verifyingContract)
assert is_address(member)
assert is_block_number(updated)
assert is_bytes16(marketId)
assert is_address(delegate)
assert type(delegateType) == int
assert is_bytes16(apiCatalog)
assert type(consent) == bool
assert servicePrefix is None or type(servicePrefix) == str
data = {
'types': {
'EIP712Domain': [
{
'name': 'name',
'type': 'string'
},
{
'name': 'version',
'type': 'string'
},
],
'EIP712Consent': [
{
'name': 'chainId',
'type': 'uint256'
},
{
'name': 'verifyingContract',
'type': 'address'
},
{
'name': 'member',
'type': 'address'
},
{
'name': 'updated',
'type': 'uint256'
},
{
'name': 'marketId',
'type': 'bytes16'
},
{
'name': 'delegate',
'type': 'address'
},
{
'name': 'delegateType',
'type': 'uint8'
},
{
'name': 'apiCatalog',
'type': 'bytes16'
},
{
'name': 'consent',
'type': 'bool'
},
{
'name': 'servicePrefix',
'type': 'string'
},
]
},
'primaryType': 'EIP712Consent',
'domain': {
'name': 'XBR',
'version': '1',
},
'message': {
'chainId': chainId,
'verifyingContract': verifyingContract,
'member': member,
'updated': updated,
'marketId': marketId,
'delegate': delegate,
'delegateType': delegateType,
'apiCatalog': apiCatalog,
'consent': consent,
'servicePrefix': servicePrefix or ''
}
}
return data
[docs]def sign_eip712_consent(eth_privkey: bytes, chainId: int, verifyingContract: bytes, member: bytes,
updated: int, marketId: bytes, delegate: bytes, delegateType: int, apiCatalog: bytes,
consent: bool, servicePrefix: 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_consent(chainId, verifyingContract, member, updated, marketId, delegate,
delegateType, apiCatalog, consent, servicePrefix)
return sign(eth_privkey, data)
[docs]def recover_eip712_consent(chainId: int, verifyingContract: bytes, member: bytes, updated: int,
marketId: bytes, delegate: bytes, delegateType: int, apiCatalog: bytes,
consent: bool, servicePrefix: 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_consent(chainId, verifyingContract, member, updated, marketId, delegate,
delegateType, apiCatalog, consent, servicePrefix)
return recover(data, signature)