# -*- coding: utf-8 -*- """ OnionShare | https://onionshare.org/ Copyright (C) 2014-2021 Micah Lee, et al. 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 . """ from PySide2 import QtCore import datetime import re import socks from distutils.version import LooseVersion as Version from onionshare_cli.settings import Settings class UpdateCheckerCheckError(Exception): """ Error checking for updates because of some Tor connection issue, or because the OnionShare website is down. """ pass class UpdateCheckerInvalidLatestVersion(Exception): """ Successfully downloaded the latest version, but it doesn't appear to be a valid version string. """ def __init__(self, latest_version): self.latest_version = latest_version class UpdateChecker(QtCore.QObject): """ Load http://elx57ue5uyfplgva.onion/latest-version.txt to see what the latest version of OnionShare is. If the latest version is newer than the installed version, alert the user. Only check at most once per day, unless force is True. """ update_available = QtCore.Signal(str, str, str) update_not_available = QtCore.Signal() update_error = QtCore.Signal() update_invalid_version = QtCore.Signal(str) def __init__(self, common, onion): super(UpdateChecker, self).__init__() self.common = common self.common.log("UpdateChecker", "__init__") self.onion = onion def check(self, force=False): self.common.log("UpdateChecker", "check", f"force={force}") # Load the settings settings = Settings(self.common) settings.load() # If force=True, then definitely check if force: check_for_updates = True else: check_for_updates = False # See if it's been 1 day since the last check autoupdate_timestamp = settings.get("autoupdate_timestamp") if autoupdate_timestamp: last_checked = datetime.datetime.fromtimestamp(autoupdate_timestamp) now = datetime.datetime.now() one_day = datetime.timedelta(days=1) if now - last_checked > one_day: check_for_updates = True else: check_for_updates = True # Check for updates if check_for_updates: self.common.log("UpdateChecker", "check", "checking for updates") # Download the latest-version file over Tor try: # User agent string includes OnionShare version and platform user_agent = f"OnionShare {self.common.version}, {self.common.platform}" # If the update is forced, add '?force=1' to the URL, to more # accurately measure daily users path = "/latest-version.txt" if force: path += "?force=1" if Version(self.onion.tor_version) >= Version("0.3.2.9"): onion_domain = ( "lldan5gahapx5k7iafb3s4ikijc4ni7gx5iywdflkba5y2ezyg6sjgyd.onion" ) else: onion_domain = "elx57ue5uyfplgva.onion" self.common.log( "UpdateChecker", "check", f"loading http://{onion_domain}{path}" ) (socks_address, socks_port) = self.onion.get_tor_socks_port() socks.set_default_proxy(socks.SOCKS5, socks_address, socks_port) s = socks.socksocket() s.settimeout(15) # 15 second timeout s.connect((onion_domain, 80)) http_request = f"GET {path} HTTP/1.0\r\n" http_request += f"Host: {onion_domain}\r\n" http_request += f"User-Agent: {user_agent}\r\n" http_request += "\r\n" s.sendall(http_request.encode("utf-8")) http_response = s.recv(1024) latest_version = ( http_response[http_response.find(b"\r\n\r\n") :] .strip() .decode("utf-8") ) self.common.log( "UpdateChecker", "check", f"latest OnionShare version: {latest_version}", ) except Exception as e: self.common.log("UpdateChecker", "check", str(e)) self.update_error.emit() raise UpdateCheckerCheckError # Validate that latest_version looks like a version string # This regex is: 1-3 dot-separated numeric components version_re = r"^(\d+\.)?(\d+\.)?(\d+)$" if not re.match(version_re, latest_version): self.update_invalid_version.emit(latest_version) raise UpdateCheckerInvalidLatestVersion(latest_version) # Update the last checked timestamp (dropping the seconds and milliseconds) timestamp = ( datetime.datetime.now() .replace(microsecond=0) .replace(second=0) .timestamp() ) # Re-load the settings first before saving, just in case they've changed since we started our thread settings.load() settings.set("autoupdate_timestamp", timestamp) settings.save() # Do we need to update? update_url = f"https://github.com/micahflee/onionshare/releases/tag/v{latest_version}" installed_version = self.common.version if installed_version < latest_version: self.update_available.emit( update_url, installed_version, latest_version ) return # No updates are available self.update_not_available.emit() class UpdateThread(QtCore.QThread): update_available = QtCore.Signal(str, str, str) update_not_available = QtCore.Signal() update_error = QtCore.Signal() update_invalid_version = QtCore.Signal(str) def __init__(self, common, onion, force=False): super(UpdateThread, self).__init__() self.common = common self.common.log("UpdateThread", "__init__") self.onion = onion self.force = force def run(self): self.common.log("UpdateThread", "run") u = UpdateChecker(self.common, self.onion) u.update_available.connect(self._update_available) u.update_not_available.connect(self._update_not_available) u.update_error.connect(self._update_error) u.update_invalid_version.connect(self._update_invalid_version) try: u.check(force=self.force) except Exception as e: # If update check fails, silently ignore self.common.log("UpdateThread", "run", str(e)) pass def _update_available(self, update_url, installed_version, latest_version): self.common.log("UpdateThread", "_update_available") self.active = False self.update_available.emit(update_url, installed_version, latest_version) def _update_not_available(self): self.common.log("UpdateThread", "_update_not_available") self.active = False self.update_not_available.emit() def _update_error(self): self.common.log("UpdateThread", "_update_error") self.active = False self.update_error.emit() def _update_invalid_version(self, latest_version): self.common.log("UpdateThread", "_update_invalid_version") self.active = False self.update_invalid_version.emit(latest_version)