lbry-sdk/lbrynet/wallet/script.py

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2018-06-14 06:53:38 +02:00
from torba.basescript import BaseInputScript, BaseOutputScript, Template
from torba.basescript import PUSH_SINGLE, OP_DROP, OP_2DROP
class InputScript(BaseInputScript):
pass
class OutputScript(BaseOutputScript):
# lbry custom opcodes
OP_CLAIM_NAME = 0xb5
OP_SUPPORT_CLAIM = 0xb6
OP_UPDATE_CLAIM = 0xb7
CLAIM_NAME_OPCODES = (
OP_CLAIM_NAME, PUSH_SINGLE('claim_name'), PUSH_SINGLE('claim'),
OP_2DROP, OP_DROP
)
CLAIM_NAME_PUBKEY = Template('claim_name+pay_pubkey_hash', (
CLAIM_NAME_OPCODES + BaseOutputScript.PAY_PUBKEY_HASH.opcodes
))
CLAIM_NAME_SCRIPT = Template('claim_name+pay_script_hash', (
CLAIM_NAME_OPCODES + BaseOutputScript.PAY_SCRIPT_HASH.opcodes
))
SUPPORT_CLAIM_OPCODES = (
OP_SUPPORT_CLAIM, PUSH_SINGLE('claim_name'), PUSH_SINGLE('claim_id'),
OP_2DROP, OP_DROP
)
SUPPORT_CLAIM_PUBKEY = Template('support_claim+pay_pubkey_hash', (
SUPPORT_CLAIM_OPCODES + BaseOutputScript.PAY_PUBKEY_HASH.opcodes
))
SUPPORT_CLAIM_SCRIPT = Template('support_claim+pay_script_hash', (
SUPPORT_CLAIM_OPCODES + BaseOutputScript.PAY_SCRIPT_HASH.opcodes
))
UPDATE_CLAIM_OPCODES = (
OP_UPDATE_CLAIM, PUSH_SINGLE('claim_name'), PUSH_SINGLE('claim_id'), PUSH_SINGLE('claim'),
OP_2DROP, OP_2DROP
)
UPDATE_CLAIM_PUBKEY = Template('update_claim+pay_pubkey_hash', (
UPDATE_CLAIM_OPCODES + BaseOutputScript.PAY_PUBKEY_HASH.opcodes
))
UPDATE_CLAIM_SCRIPT = Template('update_claim+pay_script_hash', (
UPDATE_CLAIM_OPCODES + BaseOutputScript.PAY_SCRIPT_HASH.opcodes
))
templates = BaseOutputScript.templates + [
CLAIM_NAME_PUBKEY,
CLAIM_NAME_SCRIPT,
SUPPORT_CLAIM_PUBKEY,
SUPPORT_CLAIM_SCRIPT,
UPDATE_CLAIM_PUBKEY,
UPDATE_CLAIM_SCRIPT
]
@classmethod
def pay_claim_name_pubkey_hash(cls, claim_name, claim, pubkey_hash):
return cls(template=cls.CLAIM_NAME_PUBKEY, values={
'claim_name': claim_name,
'claim': claim,
'pubkey_hash': pubkey_hash
})
@classmethod
def pay_update_claim_pubkey_hash(cls, claim_name, claim_id, claim, pubkey_hash):
return cls(template=cls.UPDATE_CLAIM_PUBKEY, values={
'claim_name': claim_name,
'claim_id': claim_id,
'claim': claim,
'pubkey_hash': pubkey_hash
})
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@property
def is_claim_name(self):
return self.template.name.startswith('claim_name+')
@property
def is_update_claim(self):
return self.template.name.startswith('update_claim+')
@property
def is_support_claim(self):
return self.template.name.startswith('support_claim+')
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@property
def is_claim_involved(self):
return self.is_claim_name or self.is_support_claim or self.is_update_claim