157 lines
6.3 KiB
Python
157 lines
6.3 KiB
Python
# -*- coding: utf-8 -*-
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# This file is part of the Calibre-Web (https://github.com/janeczku/calibre-web)
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# Copyright (C) 2018-2019 OzzieIsaacs, cervinko, jkrehm, bodybybuddha, ok11,
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# andy29485, idalin, Kyosfonica, wuqi, Kennyl, lemmsh,
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# falgh1, grunjol, csitko, ytils, xybydy, trasba, vrabe,
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# ruben-herold, marblepebble, JackED42, SiphonSquirrel,
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# apetresc, nanu-c, mutschler
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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import os
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import hashlib
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import json
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import tempfile
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from uuid import uuid4
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from time import time
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from shutil import move, copyfile
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from flask import Blueprint, flash, request, redirect, url_for, abort
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from flask_babel import gettext as _
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from flask_login import login_required
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from . import logger, gdriveutils, config, ub, calibre_db, csrf
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from .admin import admin_required
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gdrive = Blueprint('gdrive', __name__, url_prefix='/gdrive')
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log = logger.create()
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try:
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from googleapiclient.errors import HttpError
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except ImportError as err:
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log.debug("Cannot import googleapiclient, using GDrive will not work: %s", err)
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current_milli_time = lambda: int(round(time() * 1000))
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gdrive_watch_callback_token = 'target=calibreweb-watch_files' #nosec
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@gdrive.route("/authenticate")
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@login_required
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@admin_required
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def authenticate_google_drive():
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try:
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authUrl = gdriveutils.Gauth.Instance().auth.GetAuthUrl()
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except gdriveutils.InvalidConfigError:
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flash(_(u'Google Drive setup not completed, try to deactivate and activate Google Drive again'),
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category="error")
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return redirect(url_for('web.index'))
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return redirect(authUrl)
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@gdrive.route("/callback")
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def google_drive_callback():
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auth_code = request.args.get('code')
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if not auth_code:
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abort(403)
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try:
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credentials = gdriveutils.Gauth.Instance().auth.flow.step2_exchange(auth_code)
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with open(gdriveutils.CREDENTIALS, 'w') as f:
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f.write(credentials.to_json())
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except (ValueError, AttributeError) as error:
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log.error(error)
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return redirect(url_for('admin.db_configuration'))
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@gdrive.route("/watch/subscribe")
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@login_required
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@admin_required
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def watch_gdrive():
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if not config.config_google_drive_watch_changes_response:
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with open(gdriveutils.CLIENT_SECRETS, 'r') as settings:
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filedata = json.load(settings)
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address = filedata['web']['redirect_uris'][0].rstrip('/').replace('/gdrive/callback', '/gdrive/watch/callback')
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notification_id = str(uuid4())
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try:
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result = gdriveutils.watchChange(gdriveutils.Gdrive.Instance().drive, notification_id,
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'web_hook', address, gdrive_watch_callback_token, current_milli_time() + 604800*1000)
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config.config_google_drive_watch_changes_response = result
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config.save()
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except HttpError as e:
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reason=json.loads(e.content)['error']['errors'][0]
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if reason['reason'] == u'push.webhookUrlUnauthorized':
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flash(_(u'Callback domain is not verified, '
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u'please follow steps to verify domain in google developer console'), category="error")
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else:
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flash(reason['message'], category="error")
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return redirect(url_for('admin.db_configuration'))
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@gdrive.route("/watch/revoke")
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@login_required
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@admin_required
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def revoke_watch_gdrive():
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last_watch_response = config.config_google_drive_watch_changes_response
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if last_watch_response:
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try:
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gdriveutils.stopChannel(gdriveutils.Gdrive.Instance().drive, last_watch_response['id'],
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last_watch_response['resourceId'])
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except HttpError:
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pass
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config.config_google_drive_watch_changes_response = {}
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config.save()
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return redirect(url_for('admin.db_configuration'))
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@csrf.exempt
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@gdrive.route("/watch/callback", methods=['GET', 'POST'])
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def on_received_watch_confirmation():
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if not config.config_google_drive_watch_changes_response:
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return ''
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if request.headers.get('X-Goog-Channel-Token') != gdrive_watch_callback_token \
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or request.headers.get('X-Goog-Resource-State') != 'change' \
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or not request.data:
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return ''
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log.debug('%r', request.headers)
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log.debug('%r', request.data)
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log.info('Change received from gdrive')
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try:
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j = json.loads(request.data)
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log.info('Getting change details')
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response = gdriveutils.getChangeById(gdriveutils.Gdrive.Instance().drive, j['id'])
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log.debug('%r', response)
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if response:
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dbpath = os.path.join(config.config_calibre_dir, "metadata.db").encode()
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if not response['deleted'] and response['file']['title'] == 'metadata.db' \
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and response['file']['md5Checksum'] != hashlib.md5(dbpath): # nosec
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tmp_dir = os.path.join(tempfile.gettempdir(), 'calibre_web')
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if not os.path.isdir(tmp_dir):
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os.mkdir(tmp_dir)
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log.info('Database file updated')
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copyfile(dbpath, os.path.join(tmp_dir, "metadata.db_" + str(current_milli_time())))
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log.info('Backing up existing and downloading updated metadata.db')
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gdriveutils.downloadFile(None, "metadata.db", os.path.join(tmp_dir, "tmp_metadata.db"))
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log.info('Setting up new DB')
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# prevent error on windows, as os.rename does on existing files, also allow cross hdd move
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move(os.path.join(tmp_dir, "tmp_metadata.db"), dbpath)
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calibre_db.reconnect_db(config, ub.app_DB_path)
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except Exception as ex:
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log.debug_or_exception(ex)
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return ''
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