Private Decentralized Communication Network
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'''
Onionr - Private P2P Communication
Cleanup old Onionr blocks and forward secrecy keys using the communicator. Ran from a timer usually
'''
'''
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/>.
'''
import sqlite3
import logger
from onionrusers import onionrusers
from onionrutils import epoch
from coredb import blockmetadb, dbfiles
import onionrstorage
from onionrstorage import removeblock
from onionrblocks import onionrblacklist
def __remove_from_upload(comm_inst, block_hash: str):
try:
comm_inst.blocksToUpload.remove(block_hash)
except ValueError:
pass
def clean_old_blocks(comm_inst):
'''Delete old blocks if our disk allocation is full/near full, and also expired blocks'''
blacklist = onionrblacklist.OnionrBlackList()
# Delete expired blocks
for bHash in blockmetadb.expiredblocks.get_expired_blocks():
blacklist.addToDB(bHash)
removeblock.remove_block(bHash)
onionrstorage.deleteBlock(bHash)
__remove_from_upload(comm_inst, bHash)
logger.info('Deleted block: %s' % (bHash,))
while comm_inst.storage_counter.is_full():
oldest = blockmetadb.get_block_list()[0]
blacklist.addToDB(oldest)
removeblock.remove_block(oldest)
onionrstorage.deleteBlock(oldest)
__remove_from_upload.remove(comm_inst, oldest)
logger.info('Deleted block: %s' % (oldest,))
comm_inst.decrementThreadCount('clean_old_blocks')
def clean_keys(comm_inst):
'''Delete expired forward secrecy keys'''
conn = sqlite3.connect(dbfiles.user_id_info_db, timeout=10)
c = conn.cursor()
time = epoch.get_epoch()
deleteKeys = []
for entry in c.execute("SELECT * FROM forwardKeys WHERE expire <= ?", (time,)):
logger.debug('Forward key: %s' % entry[1])
deleteKeys.append(entry[1])
for key in deleteKeys:
logger.debug('Deleting forward key %s' % key)
c.execute("DELETE from forwardKeys where forwardKey = ?", (key,))
conn.commit()
conn.close()
onionrusers.deleteExpiredKeys()
comm_inst.decrementThreadCount('clean_keys')