Onionr/onionr/onionrusers/contactmanager.py

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'''
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Onionr - Private P2P Communication
Sets more abstract information related to a peer. Can be thought of as traditional 'contact' system
'''
'''
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 os, json, onionrexceptions
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from onionrusers import onionrusers
class ContactManager(onionrusers.OnionrUser):
def __init__(self, coreInst, publicKey, saveUser=False, recordExpireSeconds=5):
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super(ContactManager, self).__init__(coreInst, publicKey, saveUser=saveUser)
self.dataDir = coreInst.dataDir + '/contacts/'
self.dataFile = '%s/contacts/%s.json' % (coreInst.dataDir, publicKey)
self.lastRead = 0
self.recordExpire = recordExpireSeconds
self.data = self._loadData()
self.deleted = False
if not os.path.exists(self.dataDir):
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os.mkdir(self.dataDir)
def _writeData(self):
data = json.dumps(self.data)
with open(self.dataFile, 'w') as dataFile:
dataFile.write(data)
def _loadData(self):
self.lastRead = self._core._utils.getEpoch()
retData = {}
if os.path.exists(self.dataFile):
with open(self.dataFile, 'r') as dataFile:
retData = json.loads(dataFile.read())
return retData
def set_info(self, key, value, autoWrite=True):
if self.deleted:
raise onionrexceptions.ContactDeleted
self.data[key] = value
if autoWrite:
self._writeData()
return
def get_info(self, key, forceReload=False):
if self.deleted:
raise onionrexceptions.ContactDeleted
if (self._core._utils.getEpoch() - self.lastRead >= self.recordExpire) or forceReload:
self.data = self._loadData()
try:
return self.data[key]
except KeyError:
return None
def delete_contact(self):
self.deleted = True
if os.path.exists(self.dataFile):
os.remove(self.dataFile)