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# -*- coding: utf-8 -*-
"""
OnionShare | https://onionshare.org/
Copyright (C) 2014-2021 Micah Lee, et al. <micah@micahflee.com>
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 <http://www.gnu.org/licenses/>.
"""
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 = "https://onionshare.org"
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)
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