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# Copyright 2014-2022 Vincent Texier <vit@free.fr>
#
# DuniterPy is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# DuniterPy is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import re
from typing import List, Type, TypeVar
from duniterpy.api.endpoint import Endpoint, endpoint
from ..constants import BLOCK_HASH_REGEX, G1_CURRENCY_CODENAME, PUBKEY_REGEX
# required to type hint cls in classmethod
from ..key import SigningKey
from .block_id import BlockID
from .document import Document, MalformedDocumentError
PeerType = TypeVar("PeerType", bound="Peer")
VERSION = 10
class Peer(Document):
"""
.. note:: A peer document is specified by the following format :
| Version: VERSION
| Type: Peer
| Currency: CURRENCY_NAME
| PublicKey: NODE_PUBLICKEY
| Block: BLOCK
| Endpoints:
| END_POINT_1
| END_POINT_2
| END_POINT_3
| [...]
"""
re_type = re.compile("Type: (Peer)")
re_pubkey = re.compile(f"PublicKey: ({PUBKEY_REGEX})\n")
re_block = re.compile(f"Block: ([0-9]+-{BLOCK_HASH_REGEX})\n")
re_endpoints = re.compile("(Endpoints:)\n")
fields_parsers = {
**Document.fields_parsers,
**{
"Type": re_type,
"Pubkey": re_pubkey,
"Block": re_block,
"Endpoints": re_endpoints,
},
}
def __init__(
self,
pubkey: str,
block_id: BlockID,
endpoints: List[Endpoint],
signing_key: SigningKey = None,
version: int = VERSION,
currency: str = G1_CURRENCY_CODENAME,
) -> None:
"""
Init Peer instance
:param pubkey: Public key of the issuer
:param block_id: BlockID instance
:param endpoints: List of endpoints string
:param signing_key: SigningKey instance to sign the document (default=None)
:param version: Document version (default=peer.VERSION)
:param currency: Currency codename (default=constants.CURRENCY_CODENAME_G1)
"""
super().__init__(version, currency)
self.pubkey = pubkey
self.block_id = block_id
self.endpoints: List[Endpoint] = endpoints
if signing_key is not None:
self.sign(signing_key)
@classmethod
def from_signed_raw(cls: Type[PeerType], raw: str) -> PeerType:
"""
Return a Peer instance from a signed raw format string
:param raw: Signed raw format string
:return:
"""
lines = raw.splitlines(True)
n = 0
version = int(Peer.parse_field("Version", lines[n]))
n += 1
Peer.parse_field("Type", lines[n])
n += 1
currency = Peer.parse_field("Currency", lines[n])
n += 1
pubkey = Peer.parse_field("Pubkey", lines[n])
n += 1
block_id = BlockID.from_str(Peer.parse_field("Block", lines[n]))
n += 1
Peer.parse_field("Endpoints", lines[n])
n += 1
endpoints = []
while not Peer.re_signature.match(lines[n]):
endpoints.append(endpoint(lines[n]))
n += 1
data = Peer.re_signature.match(lines[n])
if data is None:
raise MalformedDocumentError("Peer")
signature = data.group(1)
peer = cls(pubkey, block_id, endpoints, version=version, currency=currency)
# return peer with signature
peer.signature = signature
return peer
def raw(self) -> str:
"""
Return a raw format string of the Peer document
:return:
"""
doc = f"Version: {self.version}\n\
Type: Peer\n\
Currency: {self.currency}\n\
PublicKey: {self.pubkey}\n\
Block: {self.block_id}\n\
Endpoints:\n"
for _endpoint in self.endpoints:
doc += f"{_endpoint.inline()}\n"
return doc
@classmethod
def from_bma(cls: Type[PeerType], data: dict) -> PeerType:
# get Peer Document from bma dict
version = data["version"]
currency = data["currency"]
pubkey = data["pubkey"]
block_id = BlockID.from_str(data["block"])
endpoints = []
for _endpoint in data["endpoints"]:
endpoints.append(endpoint(_endpoint))
signature = str(Peer.re_signature.match(data["signature"]))
peer = cls(pubkey, block_id, endpoints, version=version, currency=currency)
# return peer with signature
peer.signature = signature
return peer
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