Onionr/src/communicatorutils/announcenode.py

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"""
Onionr - Private P2P Communication.
Use a communicator instance to announce
our transport address to connected nodes
"""
import base64
import onionrproofs
import logger
from etc import onionrvalues
from onionrutils import basicrequests, bytesconverter
from utils import gettransports
from netcontroller import NetController
from communicator import onlinepeers
from coredb import keydb
import onionrexceptions
"""
This program 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.
This program 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 <https://www.gnu.org/licenses/>.
"""
def announce_node(daemon):
"""Announce our node to our peers."""
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ret_data = False
announce_fail = False
# Do not let announceCache get too large
if len(daemon.announceCache) >= 10000:
daemon.announceCache.popitem()
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if daemon.config.get('general.security_level', 0) == 0:
# Announce to random online peers
for i in daemon.onlinePeers:
if i not in daemon.announceCache and\
i not in daemon.announceProgress:
peer = i
break
else:
try:
peer = onlinepeers.pick_online_peer(daemon)
except onionrexceptions.OnlinePeerNeeded:
peer = ""
for _ in range(1):
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try:
ourID = gettransports.get()[0]
if not peer:
raise onionrexceptions.OnlinePeerNeeded
except (IndexError, onionrexceptions.OnlinePeerNeeded):
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break
url = 'http://' + peer + '/announce'
data = {'node': ourID}
combinedNodes = ourID + peer
if ourID != 1:
existingRand = bytesconverter.bytes_to_str(
keydb.transportinfo.get_address_info(peer, 'powValue'))
# Reset existingRand if it no longer meets the minimum POW
if isinstance(existingRand, type(None)) or \
not existingRand.endswith(
'0' * onionrvalues.ANNOUNCE_POW):
existingRand = ''
if peer in daemon.announceCache:
data['random'] = daemon.announceCache[peer]
elif len(existingRand) > 0:
data['random'] = existingRand
else:
daemon.announceProgress[peer] = True
proof = onionrproofs.DataPOW(
combinedNodes, minDifficulty=onionrvalues.ANNOUNCE_POW)
del daemon.announceProgress[peer]
try:
data['random'] = base64.b64encode(proof.waitForResult()[1])
except TypeError:
# Happens when we failed to produce a proof
logger.error(f"Failed to produce a pow for {peer} annce")
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announce_fail = True
else:
daemon.announceCache[peer] = data['random']
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if not announce_fail:
logger.info('Announcing node to ' + url)
if basicrequests.do_post_request(
url,
data,
port=daemon.shared_state.get(NetController).socksPort)\
== 'Success':
logger.info('Successfully introduced node to ' + peer,
terminal=True)
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ret_data = True
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keydb.transportinfo.set_address_info(peer, 'introduced', 1)
keydb.transportinfo.set_address_info(peer, 'powValue',
data['random'])
daemon.decrementThreadCount('announce_node')
return ret_data