# -*- coding: utf-8 -*-
# This file is part of the Calibre-Web (https://github.com/janeczku/calibre-web)
# Copyright (C) 2018-2019 OzzieIsaacs
#
# 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 .
import sys
import os
import datetime
import json
import shutil
import threading
import time
import zipfile
from io import BytesIO
from tempfile import gettempdir
import requests
from flask_babel import format_datetime
from flask_babel import gettext as _
from . import constants, logger # config, web_server
log = logger.create()
_REPOSITORY_API_URL = 'https://api.github.com/repos/janeczku/calibre-web'
def is_sha1(sha1):
if len(sha1) != 40:
return False
try:
int(sha1, 16)
except ValueError:
return False
return True
class Updater(threading.Thread):
def __init__(self):
threading.Thread.__init__(self)
self.paused = False
self.can_run = threading.Event()
self.pause()
self.status = -1
self.updateIndex = None
def init_updater(self, config, web_server):
self.config = config
self.web_server = web_server
def get_current_version_info(self):
if self.config.config_updatechannel == constants.UPDATE_STABLE:
return self._stable_version_info()
return self._nightly_version_info()
def get_available_updates(self, request_method):
if self.config.config_updatechannel == constants.UPDATE_STABLE:
return self._stable_available_updates(request_method)
return self._nightly_available_updates(request_method)
def do_work(self):
try:
self.status = 1
log.debug('Download update file')
headers = {'Accept': 'application/vnd.github.v3+json'}
r = requests.get(self._get_request_path(), stream=True, headers=headers, timeout=(10, 600))
r.raise_for_status()
self.status = 2
log.debug('Opening zipfile')
z = zipfile.ZipFile(BytesIO(r.content))
self.status = 3
log.debug('Extracting zipfile')
tmp_dir = gettempdir()
z.extractall(tmp_dir)
folder_name = os.path.join(tmp_dir, z.namelist()[0])[:-1]
if not os.path.isdir(folder_name):
self.status = 11
log.info('Extracted contents of zipfile not found in temp folder')
self.pause()
return False
self.status = 4
log.debug('Replacing files')
if self.update_source(folder_name, constants.BASE_DIR):
self.status = 6
log.debug('Preparing restart of server')
time.sleep(2)
self.web_server.stop(True)
self.status = 7
time.sleep(2)
return True
else:
self.status = 13
except requests.exceptions.HTTPError as ex:
log.error('HTTP Error %s', ex)
self.status = 8
except requests.exceptions.ConnectionError:
log.error('Connection error')
self.status = 9
except requests.exceptions.Timeout:
log.error('Timeout while establishing connection')
self.status = 10
except (requests.exceptions.RequestException, zipfile.BadZipFile):
self.status = 11
log.error('General error')
except (IOError, OSError) as ex:
self.status = 12
log.error('Possible Reason for error: update file could not be saved in temp dir')
log.error_or_exception(ex)
self.pause()
return False
def run(self):
while True:
self.can_run.wait()
if self.status > -1:
if self.do_work():
break # stop loop and end thread for restart
else:
break
def pause(self):
self.can_run.clear()
# should just resume the thread
def resume(self):
self.can_run.set()
def stop(self):
self.status = -2
self.can_run.set()
def get_update_status(self):
return self.status
@classmethod
def file_to_list(cls, filelist):
return [x.strip() for x in open(filelist, 'r') if not x.startswith('#EXT')]
@classmethod
def one_minus_two(cls, one, two):
return [x for x in one if x not in set(two)]
@classmethod
def reduce_dirs(cls, delete_files, new_list):
new_delete = []
for filename in delete_files:
parts = filename.split(os.sep)
sub = ''
for part in parts:
sub = os.path.join(sub, part)
if sub == '':
sub = os.sep
count = 0
for song in new_list:
if song.startswith(sub):
count += 1
break
if count == 0:
if sub != '\\':
new_delete.append(sub)
break
return list(set(new_delete))
@classmethod
def reduce_files(cls, remove_items, exclude_items):
rf = []
for item in remove_items:
if not item.startswith(exclude_items):
rf.append(item)
return rf
@classmethod
def check_permissions(cls, root_src_dir, root_dst_dir, log_function):
access = True
remove_path = len(root_src_dir) + 1
for src_dir, __, files in os.walk(root_src_dir):
root_dir = os.path.join(root_dst_dir, src_dir[remove_path:])
# Skip non-existing folders on check
if not os.path.isdir(root_dir):
continue
if not os.access(root_dir, os.R_OK | os.W_OK):
log_function("Missing permissions for {}".format(root_dir))
access = False
for file_ in files:
curr_file = os.path.join(root_dir, file_)
# Skip non-existing files on check
if not os.path.isfile(curr_file): # or curr_file.startswith('.'):
continue
if not os.access(curr_file, os.R_OK | os.W_OK):
log_function("Missing permissions for {}".format(curr_file))
access = False
return access
@classmethod
def move_all_files(cls, root_src_dir, root_dst_dir):
permission = None
new_permissions = os.stat(root_dst_dir)
log.debug('Performing Update on OS-System: %s', sys.platform)
change_permissions = not (sys.platform == "win32" or sys.platform == "darwin")
for src_dir, __, files in os.walk(root_src_dir):
dst_dir = src_dir.replace(root_src_dir, root_dst_dir, 1)
if not os.path.exists(dst_dir):
try:
os.makedirs(dst_dir)
log.debug('Create directory: {}'.format(dst_dir))
except OSError as e:
log.error('Failed creating folder: {} with error {}'.format(dst_dir, e))
if change_permissions:
try:
os.chown(dst_dir, new_permissions.st_uid, new_permissions.st_gid)
except OSError as e:
old_permissions = os.stat(dst_dir)
log.error('Failed changing permissions of %s. Before: %s:%s After %s:%s error: %s',
dst_dir, old_permissions.st_uid, old_permissions.st_gid,
new_permissions.st_uid, new_permissions.st_gid, e)
for file_ in files:
src_file = os.path.join(src_dir, file_)
dst_file = os.path.join(dst_dir, file_)
if os.path.exists(dst_file):
if change_permissions:
permission = os.stat(dst_file)
try:
os.remove(dst_file)
log.debug('Remove file before copy: {}'.format(dst_file))
except OSError as e:
log.error('Failed removing file: {} with error {}'.format(dst_file, e))
else:
if change_permissions:
permission = new_permissions
try:
shutil.move(src_file, dst_dir)
log.debug('Move File %s to %s', src_file, dst_dir)
except OSError as ex:
log.error('Failed moving file from {} to {} with error {}'.format(src_file, dst_dir, ex))
if change_permissions:
try:
os.chown(dst_file, permission.st_uid, permission.st_gid)
except OSError as e:
old_permissions = os.stat(dst_file)
log.error('Failed changing permissions of %s. Before: %s:%s After %s:%s error: %s',
dst_file, old_permissions.st_uid, old_permissions.st_gid,
permission.st_uid, permission.st_gid, e)
return
def update_source(self, source, destination):
# destination files
old_list = list()
exclude = self._add_excluded_files(log.info)
additional_path = self.is_venv()
if additional_path:
exclude.append(additional_path)
exclude = tuple(exclude)
# check if we are in a package, rename cps.py to __init__.py and __main__.py
if constants.HOME_CONFIG:
shutil.copy(os.path.join(source, 'cps.py'), os.path.join(source, '__main__.py'))
shutil.move(os.path.join(source, 'cps.py'), os.path.join(source, '__init__.py'))
for root, dirs, files in os.walk(destination, topdown=True):
for name in files:
old_list.append(os.path.join(root, name).replace(destination, ''))
for name in dirs:
old_list.append(os.path.join(root, name).replace(destination, ''))
# source files
new_list = list()
for root, dirs, files in os.walk(source, topdown=True):
for name in files:
new_list.append(os.path.join(root, name).replace(source, ''))
for name in dirs:
new_list.append(os.path.join(root, name).replace(source, ''))
delete_files = self.one_minus_two(old_list, new_list)
rf = self.reduce_files(delete_files, exclude)
remove_items = self.reduce_dirs(rf, new_list)
if self.check_permissions(source, destination, log.debug):
self.move_all_files(source, destination)
for item in remove_items:
item_path = os.path.join(destination, item[1:])
if os.path.isdir(item_path):
log.debug("Delete dir %s", item_path)
shutil.rmtree(item_path, ignore_errors=True)
else:
try:
os.remove(item_path)
log.debug("Delete file %s", item_path)
except OSError:
log.debug("Could not remove: %s", item_path)
shutil.rmtree(source, ignore_errors=True)
return True
else:
log.debug("Permissions missing for update")
return False
@staticmethod
def is_venv():
if (hasattr(sys, 'real_prefix')) or (hasattr(sys, 'base_prefix') and sys.base_prefix != sys.prefix):
return os.sep + os.path.relpath(sys.prefix, constants.BASE_DIR)
else:
return False
@classmethod
def _nightly_version_info(cls):
if is_sha1(constants.NIGHTLY_VERSION[0]) and len(constants.NIGHTLY_VERSION[1]) > 0:
log.debug("Nightly version: {}, {}".format(constants.NIGHTLY_VERSION[0], constants.NIGHTLY_VERSION[1]))
return {'version': constants.NIGHTLY_VERSION[0], 'datetime': constants.NIGHTLY_VERSION[1]}
return False
@classmethod
def _stable_version_info(cls):
log.debug("Stable version: {}".format(constants.STABLE_VERSION))
return constants.STABLE_VERSION # Current Version
@classmethod
def dry_run(cls):
cls._add_excluded_files(print)
cls.check_permissions(constants.BASE_DIR, constants.BASE_DIR, print)
print("\n*** Finished ***")
@staticmethod
def _populate_parent_commits(update_data, status, tz, parents):
try:
parent_commit = update_data['parents'][0]
# limit the maximum search depth
remaining_parents_cnt = 10
except (IndexError, KeyError):
remaining_parents_cnt = None
parent_commit = None
if remaining_parents_cnt is not None:
while True:
if remaining_parents_cnt == 0:
break
# check if we are more than one update behind if so, go up the tree
if parent_commit['sha'] != status['current_commit_hash']:
try:
headers = {'Accept': 'application/vnd.github.v3+json'}
r = requests.get(parent_commit['url'], headers=headers, timeout=10)
r.raise_for_status()
parent_data = r.json()
parent_commit_date = datetime.datetime.strptime(
parent_data['committer']['date'], '%Y-%m-%dT%H:%M:%SZ') - tz
parent_commit_date = format_datetime(
parent_commit_date, format='short')
parents.append([parent_commit_date,
parent_data['message'].replace('\r\n', '').replace('\n', '
')])
parent_commit = parent_data['parents'][0]
remaining_parents_cnt -= 1
except Exception:
# it isn't crucial if we can't get information about the parent
break
else:
# parent is our current version
break
return parents
@staticmethod
def _load_nightly_data(repository_url, commit, status):
update_data = dict()
try:
headers = {'Accept': 'application/vnd.github.v3+json'}
r = requests.get(repository_url + '/git/commits/' + commit['object']['sha'],
headers=headers,
timeout=10)
r.raise_for_status()
update_data = r.json()
except requests.exceptions.HTTPError as e:
status['message'] = _('HTTP Error') + ' ' + str(e)
except requests.exceptions.ConnectionError:
status['message'] = _('Connection error')
except requests.exceptions.Timeout:
status['message'] = _('Timeout while establishing connection')
except (requests.exceptions.RequestException, ValueError):
status['message'] = _('General error')
return status, update_data
@staticmethod
def _add_excluded_files(log_function):
excluded_files = [
os.sep + 'app.db', os.sep + 'calibre-web.log1', os.sep + 'calibre-web.log2', os.sep + 'gdrive.db',
os.sep + 'vendor', os.sep + 'calibre-web.log', os.sep + '.git', os.sep + 'client_secrets.json',
os.sep + 'gdrive_credentials', os.sep + 'settings.yaml', os.sep + 'venv', os.sep + 'virtualenv',
os.sep + 'access.log', os.sep + 'access.log1', os.sep + 'access.log2',
os.sep + '.calibre-web.log.swp', os.sep + '_sqlite3.so', os.sep + 'cps' + os.sep + '.HOMEDIR',
os.sep + 'gmail.json', os.sep + 'exclude.txt', os.sep + 'cps' + os.sep + 'cache'
]
try:
with open(os.path.join(constants.BASE_DIR, "exclude.txt"), "r") as f:
lines = f.readlines()
for line in lines:
processed_line = line.strip("\n\r ").strip("\"'").lstrip("\\/ ").\
replace("\\", os.sep).replace("/", os.sep)
if os.path.exists(os.path.join(constants.BASE_DIR, processed_line)):
excluded_files.append(os.sep + processed_line)
else:
log_function("File list for updater: {} not found".format(line))
except (PermissionError, FileNotFoundError):
log_function("Excluded file list for updater not found, or not accessible")
return excluded_files
def _nightly_available_updates(self, request_method):
tz = datetime.timedelta(seconds=time.timezone if (time.localtime().tm_isdst == 0) else time.altzone)
if request_method == "GET":
repository_url = _REPOSITORY_API_URL
status, commit = self._load_remote_data(repository_url + '/git/refs/heads/master')
parents = []
if status['message'] != '':
return json.dumps(status)
if 'object' not in commit or 'url' not in commit['object']:
status['message'] = _('Unexpected data while reading update information')
return json.dumps(status)
try:
if commit['object']['sha'] == status['current_commit_hash']:
status.update({
'update': False,
'success': True,
'message': _('No update available. You already have the latest version installed')
})
return json.dumps(status)
except (TypeError, KeyError):
status['message'] = _('Unexpected data while reading update information')
return json.dumps(status)
# a new update is available
status['update'] = True
status, update_data = self._load_nightly_data(repository_url, commit, status)
if status['message'] != '':
return json.dumps(status)
# if 'committer' in update_data and 'message' in update_data:
try:
log.debug("A new update is available.")
status['success'] = True
status['message'] = _(
'A new update is available. Click on the button below to update to the latest version.')
new_commit_date = datetime.datetime.strptime(
update_data['committer']['date'], '%Y-%m-%dT%H:%M:%SZ') - tz
parents.append(
[
format_datetime(new_commit_date, format='short'),
update_data['message'],
update_data['sha']
]
)
# it only makes sense to analyze the parents if we know the current commit hash
if status['current_commit_hash'] != '':
parents = self._populate_parent_commits(update_data, status, tz, parents)
status['history'] = parents[::-1]
except (IndexError, KeyError):
status['success'] = False
status['message'] = _('Could not fetch update information')
log.error("Could not fetch update information")
return json.dumps(status)
return ''
def _stable_updater_set_status(self, i, newer, status, parents, commit):
if i == -1 and newer is False:
status.update({
'update': True,
'success': True,
'message': _(
'Click on the button below to update to the latest stable version.'),
'history': parents
})
self.updateFile = commit[0]['zipball_url']
elif i == -1 and newer is True:
status.update({
'update': True,
'success': True,
'message': _('A new update is available. Click on the button below to '
'update to version: %(version)s', version=commit[0]['tag_name']),
'history': parents
})
self.updateFile = commit[0]['zipball_url']
return status
def _stable_updater_parse_major_version(self, commit, i, parents, current_version, status):
if int(commit[i + 1]['tag_name'].split('.')[1]) == current_version[1]:
parents.append([commit[i]['tag_name'],
commit[i]['body'].replace('\r\n', '
').replace('\n', '
')])
status.update({
'update': True,
'success': True,
'message': _(u'A new update is available. Click on the button below to '
u'update to version: %(version)s', version=commit[i]['tag_name']),
'history': parents
})
self.updateFile = commit[i]['zipball_url']
else:
parents.append([commit[i + 1]['tag_name'],
commit[i + 1]['body'].replace('\r\n', '
').replace('\n', '
')])
status.update({
'update': True,
'success': True,
'message': _(u'A new update is available. Click on the button below to '
u'update to version: %(version)s', version=commit[i + 1]['tag_name']),
'history': parents
})
self.updateFile = commit[i + 1]['zipball_url']
return status, parents
def _stable_available_updates(self, request_method):
status = None
if request_method == "GET":
parents = []
# repository_url = 'https://api.github.com/repos/flatpak/flatpak/releases' # test URL
repository_url = _REPOSITORY_API_URL + '/releases?per_page=100'
status, commit = self._load_remote_data(repository_url)
if status['message'] != '':
return json.dumps(status)
if not commit:
status['success'] = True
status['message'] = _(u'No release information available')
return json.dumps(status)
version = status['current_commit_hash']
current_version = status['current_commit_hash'].split('.')
# we are already on newest version, no update available
if 'tag_name' not in commit[0]:
status['message'] = _(u'Unexpected data while reading update information')
log.error("Unexpected data while reading update information")
return json.dumps(status)
if commit[0]['tag_name'] == version:
status.update({
'update': False,
'success': True,
'message': _(u'No update available. You already have the latest version installed')
})
return json.dumps(status)
i = len(commit) - 1
newer = False
while i >= 0:
if 'tag_name' not in commit[i] or 'body' not in commit[i] or 'zipball_url' not in commit[i]:
status['message'] = _(u'Unexpected data while reading update information')
return json.dumps(status)
major_version_update = int(commit[i]['tag_name'].split('.')[0])
minor_version_update = int(commit[i]['tag_name'].split('.')[1])
patch_version_update = int(commit[i]['tag_name'].split('.')[2])
current_version[0] = int(current_version[0])
current_version[1] = int(current_version[1])
try:
current_version[2] = int(current_version[2])
except ValueError:
current_version[2] = int(current_version[2].split(' ')[0])-1
# Check if major versions are identical search for newest non-equal commit and update to this one
if major_version_update == current_version[0]:
if (minor_version_update == current_version[1] and
patch_version_update > current_version[2]) or \
minor_version_update > current_version[1]:
parents.append([commit[i]['tag_name'], commit[i]['body'].replace('\r\n', '
')])
newer = True
i -= 1
continue
if major_version_update < current_version[0]:
i -= 1
continue
if major_version_update > current_version[0]:
# found update to last version before major update, unless current version is on last version
# before major update
if i == (len(commit) - 1):
i -= 1
status, parents = self._stable_updater_parse_major_version(commit,
i,
parents,
current_version,
status)
break
status = self._stable_updater_set_status(i, newer, status, parents, commit)
return json.dumps(status)
def _get_request_path(self):
if self.config.config_updatechannel == constants.UPDATE_STABLE:
return self.updateFile
return _REPOSITORY_API_URL + '/zipball/master'
def _load_remote_data(self, repository_url):
status = {
'update': False,
'success': False,
'message': '',
'current_commit_hash': ''
}
commit = None
version = self.get_current_version_info()
if version is False:
status['current_commit_hash'] = _(u'Unknown')
else:
status['current_commit_hash'] = version['version']
try:
headers = {'Accept': 'application/vnd.github.v3+json'}
r = requests.get(repository_url, headers=headers, timeout=10)
commit = r.json()
r.raise_for_status()
except requests.exceptions.HTTPError as e:
if commit:
if 'message' in commit:
status['message'] = _(u'HTTP Error') + ': ' + commit['message']
else:
status['message'] = _(u'HTTP Error') + ': ' + str(e)
except requests.exceptions.ConnectionError as e:
status['message'] = _(u'Connection error')
except requests.exceptions.Timeout:
status['message'] = _(u'Timeout while establishing connection')
except (requests.exceptions.RequestException, ValueError):
status['message'] = _(u'General error')
log.debug('Updater status: {}'.format(status['message'] or "OK"))
return status, commit