Onionr/src/onionrstorage/removeblock.py

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"""Onionr - Private P2P Communication.
remove onionr block from meta db
"""
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import sys, sqlite3
import onionrexceptions, onionrstorage
from onionrutils import stringvalidators
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from coredb import dbfiles
from onionrblocks import storagecounter
"""
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/>.
"""
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def remove_block(block):
"""
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remove a block from this node (does not automatically blacklist)
**You may want blacklist.addToDB(blockHash)
"""
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if stringvalidators.validate_hash(block):
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conn = sqlite3.connect(dbfiles.block_meta_db, timeout=30)
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c = conn.cursor()
t = (block,)
c.execute('Delete from hashes where hash=?;', t)
conn.commit()
conn.close()
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dataSize = sys.getsizeof(onionrstorage.getData(block))
storagecounter.StorageCounter().remove_bytes(dataSize)
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else:
raise onionrexceptions.InvalidHexHash