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https://github.com/alexgo-io/stacks-puppet-node.git
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131 lines
4.2 KiB
Python
131 lines
4.2 KiB
Python
#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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"""
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Blockstack
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~~~~~
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copyright: (c) 2014-2015 by Halfmoon Labs, Inc.
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copyright: (c) 2016 by Blockstack.org
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This file is part of Blockstack
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Blockstack 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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Blockstack 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 Blockstack. If not, see <http://www.gnu.org/licenses/>.
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"""
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from pybitcoin import embed_data_in_blockchain, BlockchainInfoClient, hex_hash160, make_op_return_tx, serialize_transaction, broadcast_transaction, make_op_return_outputs
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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 *
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import virtualchain
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if not globals().has_key('log'):
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log = virtualchain.session.log
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from namespacereveal import FIELDS as NAMESPACE_REVEAL_FIELDS
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# consensus hash fields (ORDER MATTERS!)
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FIELDS = NAMESPACE_REVEAL_FIELDS + [
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'ready_block', # block number at which the namespace was readied
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]
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def build( namespace_id, testset=False ):
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"""
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Record to mark the end of a namespace import in the blockchain.
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Takes an base40-encoded namespace ID to mark the end.
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Format:
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0 2 3 4 23
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|-----|--|--|------------|
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magic op . ns_id
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"""
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# sanity check
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if not is_b40( namespace_id ) or "+" in namespace_id or namespace_id.count(".") > 0:
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raise Exception("Namespace ID '%s' has non-base-38 characters" % namespace_id)
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if len(namespace_id) == 0 or len(namespace_id) > LENGTHS['blockchain_id_namespace_id']:
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raise Exception("Invalid namespace ID '%s (expected length between 1 and %s)" % (namespace_id, LENGTHS['blockchain_id_namespace_id']))
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readable_script = "NAMESPACE_READY 0x%s" % (hexlify("." + namespace_id))
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hex_script = blockstack_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( namespace_id, private_key, blockchain_client, testset=False, tx_only=False, blockchain_broadcaster=None ):
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if blockchain_broadcaster is None:
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blockchain_broadcaster = blockchain_client
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nulldata = build( namespace_id, testset=testset )
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# get inputs and from address
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private_key_obj, from_address, inputs = analyze_private_key(private_key, blockchain_client)
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# OP_RETURN outputs
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outputs = make_op_return_outputs( nulldata, inputs, from_address, fee=DEFAULT_OP_RETURN_FEE, format='hex' )
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if tx_only:
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unsigned_tx = serialize_transaction( inputs, outputs )
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return {'unsigned_tx': signed_tx}
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else:
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signed_tx = tx_serialize_and_sign( inputs, outputs, private_key_obj )
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response = broadcast_transaction( signed_tx, blockchain_broadcaster )
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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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NOTE: the first three bytes will be missing
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NOTE: the first byte in bin_payload is a '.'
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"""
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if bin_payload[0] != '.':
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log.error("Missing namespace delimiter .")
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return None
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namespace_id = bin_payload[ 1: ]
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# sanity check
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if not is_b40( namespace_id ) or "+" in namespace_id or namespace_id.count(".") > 0:
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log.error("Invalid namespace ID '%s'" % namespace_id)
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return None
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if len(namespace_id) <= 0 or len(namespace_id) > LENGTHS['blockchain_id_namespace_id']:
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log.error("Invalid namespace of length %s" % len(namespace_id))
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return None
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return {
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'opcode': 'NAMESPACE_READY',
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'namespace_id': namespace_id
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}
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def get_fees( inputs, outputs ):
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"""
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Blockstack currently does not allow
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the subsidization of namespaces.
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"""
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return (None, None)
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