Onionr/onionr/onionrusers.py

144 lines
5.0 KiB
Python

'''
Onionr - P2P Anonymous Storage Network
Contains abstractions for interacting with users of Onionr
'''
'''
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 onionrblockapi, logger, onionrexceptions, json, sqlite3
class OnionrUser:
def __init__(self, coreInst, publicKey):
self.trust = 0
self._core = coreInst
self.publicKey = publicKey
self.trust = self._core.getPeerInfo(self.publicKey, 'trust')
return
def setTrust(self, newTrust):
'''Set the peers trust. 0 = not trusted, 1 = friend, 2 = ultimate'''
self._core.setPeerInfo(self.publicKey, 'trust', newTrust)
def isFriend(self):
if self._core.getPeerInfo(self.publicKey, 'trust') == 1:
return True
return False
def getName(self):
retData = 'anonymous'
name = self._core.getPeerInfo(self.publicKey, 'name')
try:
if len(name) > 0:
retData = name
except ValueError:
pass
return retData
def encrypt(self, data):
encrypted = coreInst._crypto.pubKeyEncrypt(data, self.publicKey, encodedData=True)
return encrypted
def decrypt(self, data, anonymous=True):
decrypted = coreInst._crypto.pubKeyDecrypt(data, self.publicKey, encodedData=True)
return decrypted
def forwardEncrypt(self, data):
retData = ''
forwardKey = self._getLatestForwardKey()
if self._core._utils.validatePubKey(forwardKey):
encrypted = self._core._crypto.pubKeyEncrypt(data, forwardKey, encodedData=True)
else:
raise Exception("No valid forward key available for this user")
return
def forwardDecrypt(self, encrypted):
retData = ''
return
def _getLatestForwardKey(self):
# Get the latest forward secrecy key for a peer
conn = sqlite3.connect(self._core.peerDB)
c = conn.cursor()
for row in c.execute("SELECT forwardKey FROM forwardKeys WHERE peerKey = ? AND date=(SELECT max(date) FROM forwardKeys)", (self.publicKey,)):
key = row[0]
break
conn.commit()
conn.close()
return key
def _getForwardKeys(self):
conn = sqlite3.connect(self._core.peerDB)
c = conn.cursor()
keyList = []
for row in c.execute("SELECT forwardKey FROM forwardKeys WHERE peerKey = ?", (self.publicKey,)):
key = row[0]
keyList.append(key)
conn.commit()
conn.close()
return list(keyList)
def generateForwardKey(self, expire=432000):
# Generate a forward secrecy key for the peer
conn = sqlite3.connect(self._core.forwardKeysFile)
c = conn.cursor()
# Prepare the insert
time = self._core._utils.getEpoch()
newKeys = self._core._crypto.generatePubKey()
newPub = newKeys[0]
newPriv = newKeys[1]
time = self._core._utils.getEpoch()
command = (self.publicKey, newPub, newPriv, time, expire)
c.execute("INSERT INTO myForwardKeys VALUES(?, ?, ?, ?);", command)
conn.commit()
conn.close()
def addForwardKey(self, newKey):
if not self._core._utils.validatePubKey(newKey):
raise onionrexceptions.InvalidPubkey
# Add a forward secrecy key for the peer
conn = sqlite3.connect(self._core.peerDB)
c = conn.cursor()
# Prepare the insert
time = self._core._utils.getEpoch()
command = (self.publicKey, newKey, time)
c.execute("INSERT INTO forwardKeys VALUES(?, ?, ?);", command)
conn.commit()
conn.close()
return
def findAndSetID(self):
'''Find any info about the user from existing blocks and cache it to their DB entry'''
infoBlocks = []
for bHash in self._core.getBlocksByType('userInfo'):
block = onionrblockapi.Block(bHash, core=self._core)
if block.signer == self.publicKey:
if block.verifySig():
newName = block.getMetadata('name')
if newName.isalnum():
logger.info('%s is now using the name %s.' % (self.publicKey, self._core._utils.escapeAnsi(newName)))
self._core.setPeerInfo(self.publicKey, 'name', newName)
else:
raise onionrexceptions.InvalidPubkey