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https://github.com/alexgo-io/stacks-puppet-node.git
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92 lines
2.9 KiB
Python
92 lines
2.9 KiB
Python
#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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"""
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Blockstore
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~~~~~
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copyright: (c) 2014 by Halfmoon Labs, Inc.
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copyright: (c) 2015 by Blockstack.org
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This file is part of Blockstore
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Blockstore is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Blockstore is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Blockstore. If not, see <http://www.gnu.org/licenses/>.
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"""
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from pybitcoin import embed_data_in_blockchain, BlockchainInfoClient
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from utilitybelt import is_hex
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from binascii import hexlify, unhexlify
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from ..b40 import b40_to_hex, bin_to_b40, is_b40
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from ..config import *
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from ..scripts import blockstore_script_to_hex, add_magic_bytes
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def build(name, testset=False):
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"""
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Takes in the name, including the namespace ID (but not the id: scheme)
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Returns a hex string representing up to LENGTHS['blockchain_id_name'] bytes.
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Record format:
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0 2 3 39
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|----|--|-----------------------------|
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magic op name.ns_id (37 bytes)
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"""
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if not is_b40( name ) or "+" in name or name.count(".") > 1:
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raise Exception("Name '%s' has non-base-38 characters" % name)
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name_hex = hexlify(name)
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if len(name_hex) > LENGTHS['blockchain_id_name'] * 2:
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# too long
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raise Exception("Name '%s' too long (exceeds %d bytes)" % (fqn, LENGTHS['blockchain_id_name']))
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readable_script = "NAME_REVOKE 0x%s" % (hexlify(name))
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hex_script = blockstore_script_to_hex(readable_script)
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packaged_script = add_magic_bytes(hex_script, testset=testset)
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return packaged_script
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def broadcast(name, private_key, blockchain_client, testset=False):
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nulldata = build(name, testset=testset)
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# response = {'success': True }
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response = embed_data_in_blockchain( nulldata, private_key, blockchain_client, format='hex')
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response.update({'data': nulldata})
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return response
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def parse(bin_payload):
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"""
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Interpret a block's nulldata back into a name. The first three bytes (2 magic + 1 opcode)
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will not be present in bin_payload.
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The name will be directly represented by the bytes given.
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"""
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fqn = bin_payload
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return {
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'opcode': 'NAME_REVOKE',
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'name': fqn
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}
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def serialize( nameop ):
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"""
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Convert the set of data obtained from parsing the revoke into a unique string.
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"""
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return NAME_REVOKE + ":" + nameop['name']
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