PK~LÕgsheet_keyring.py"""This package provides a Keyring_ back end that stores passwords in a Google Sheet. It was created for use with the ipython-secrets_ package, that uses Keyring to store secrets that are used in a Jupyter notebook. This package extends ipython-secret's functionality, to enable it to be used in Colaboratory notebooks, and with other hosted services that don't support the standard `keyring` back ends. .. _Keyring: https://pypi.python.org/pypi/keyring .. _ipython-secrets: https://github.com/osteele/ipython-secrets """ from datetime import datetime import time import keyring from keyring.errors import InitError, PasswordDeleteError import gspread from oauth2client.client import GoogleCredentials __version__ = '0.1.0' SERVICENAME_COL = 1 USERNAME_COL = 2 PASSWORD_COL = 3 CREATED_AT_COL = 4 UPDATED_AT_COL = 5 class GoogleSheetKeyring(keyring.backend.KeyringBackend): """A Keyring back end backed by a Google Sheet. """ _sheet_key = None _sheet_title = 'keyring' _sheet_url = None _worksheet = None _credentials = None _cache_renewal_seconds = 60 __cache = None __cache_accessed_at = 0 # compute priority dynamically based on import error priority = 0.5 def __init__(self, *, sheet_key=None, sheet_title=None, sheet_url=None, credentials=None, worksheet=None): """ The Google Sheet may be specified with a variety of parameters. They have the precedence `worksheet` > `sheet_url` > `sheet_key` > `sheet_title`. The first non-falsey parameter is used: lower-precedence parameters are silently ignored. If the only non-falsey parameter is `sheet_title` and no sheet with this title is found, a new sheet is created. This is in the only circumstance in which this class will create a new sheet. .. _Google Sheet key: https://webapps.stackexchange.com/questions/74205/what-is-the-key-in-my-google-sheets-url .. _gspread Worksheet: https://gspread.readthedocs.io/en/latest/#gspread.models.Worksheet Parameters ---------- credentials : object `oauth2` credentials. sheet_key : str A `Google Sheet key`_. sheet_title : str A Google Sheet document title. worksheet : :class:`gspread.Worksheet` A `gspread Worksheet`_ instance. """ super().__init__() self._sheet_key = sheet_key self._sheet_title = sheet_title self._sheet_url = sheet_url self._worksheet = worksheet self._credentials = credentials @property def credentials(self): """Google Auth credentials.""" if not self._credentials: self._credentials = GoogleCredentials.get_application_default() return self._credentials @property def sheet(self): """The gspread Google Sheet.""" if self._worksheet: return self._worksheet key = self._sheet_key title = self._sheet_title gc = gspread.authorize(self.credentials) if key: try: doc = gc.open_by_key(key) except gspread.SpreadsheetNotFound: raise InitError('Spreadsheet not found') else: try: doc = gc.open(title) except gspread.SpreadsheetNotFound: doc = gc.create(title) except gspread.exceptions.APIError as e: raise InitError(e) self._worksheet = doc.sheet1 return self._worksheet @property def _cache(self): now = time.time() if now > self.__cache_accessed_at + self._cache_renewal_seconds: self.__cache = dict() self.__cache_accessed_at = now return self.__cache def _current_time(self): """Get current time formatted s.t Google Sheets recognizes it as a datetime. Google Sheets doesn't recognize datetime formats with timezones. We use UTC, but this isn't indicated in the data. """ dt = datetime.utcnow() return dt.strftime('%Y-%m-%d %H:%M') def _find_rows(self, servicename, username): """Get a set of row numbers that match the provided servicename and username. """ ws = self.sheet servicename_rows = {c.row for c in ws.findall(servicename) if c.col == SERVICENAME_COL} username_rows = {c.row for c in ws.findall(username) if c.col == USERNAME_COL} return servicename_rows & username_rows def set_password(self, servicename, username, password): """Set password for the username of the service """ ts = self._current_time() ws = self.sheet cache_key = (servicename, username) rows = self._find_rows(servicename, username) if rows: r = min(rows) if ws.cell(min(rows), PASSWORD_COL).value != password: ws.update_cell(r, PASSWORD_COL, password) cells = ws.range(r, UPDATED_AT_COL, r, UPDATED_AT_COL) cells[0].value = ts ws.update_cells(cells, value_input_option='USER_ENTERED') else: # new rows go at the top, right below the header r = 2 ws.insert_row([servicename, username, password], index=r) cells = ws.range(r, CREATED_AT_COL, r, UPDATED_AT_COL) cells[0].value = ts cells[1].value = ts ws.update_cells(cells, value_input_option='USER_ENTERED') self._cache[cache_key] = password def get_password(self, servicename, username): """Get password of the username for the service """ cache_key = (servicename, username) if cache_key in self._cache: return self._cache[cache_key] rows = self._find_rows(servicename, username) password = (self.sheet.cell(min(rows), PASSWORD_COL).value if rows else None) self._cache[cache_key] = password return password def delete_password(self, servicename, username): """Delete the password for the username of the service. """ ws = self.sheet rows = self._find_rows(servicename, username) if not rows: raise PasswordDeleteError("Password not found") # There can be multiple matching rows if the sheet has been # manually edited or there's been a race. for r in sorted(rows)[::-1]: ws.delete_row(r) self._cache.pop((servicename, username), None) PK!HgӶ.=/gsheet_keyring-0.1.0.dist-info/entry_points.txtN,KKJLNK)J/HM-P0y`7D PKcL0*88&gsheet_keyring-0.1.0.dist-info/LICENSEThe MIT License (MIT) Copyright (c) 2018 Oliver Steele Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 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