Onionr/src/coredb/blockmetadb/updateblockinfo.py

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2019-06-26 05:26:50 +00:00
'''
Onionr - Private P2P Communication
Update block information in the metadata database by a field name
'''
'''
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
from .. import dbfiles
from etc import onionrvalues
def update_block_info(hash, key, data):
'''
sets info associated with a block
hash - the hash of a block
dateReceived - the date the block was recieved, not necessarily when it was created
decrypted - if we can successfully decrypt the block (does not describe its current state)
dataType - data type of the block
dataFound - if the data has been found for the block
dataSaved - if the data has been saved for the block
sig - optional signature by the author (not optional if author is specified)
author - multi-round partial sha3-256 hash of authors public key
dateClaimed - timestamp claimed inside the block, only as trustworthy as the block author is
expire - expire date for a block
'''
if key not in ('dateReceived', 'decrypted', 'dataType', 'dataFound',
'dataSaved', 'sig', 'author', 'dateClaimed', 'expire'):
raise ValueError('Key must be in the allowed list')
conn = sqlite3.connect(dbfiles.block_meta_db, timeout=onionrvalues.DATABASE_LOCK_TIMEOUT)
c = conn.cursor()
args = (data, hash)
# Unfortunately, not really possible
c.execute("UPDATE hashes SET " + key + " = ? where hash = ?;", args)
conn.commit()
conn.close()
return True