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Code Issues Releases Wiki Activity

Merge remote-tracking branch 'mimetype/python_magic_poc' into Develop

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This commit is contained in:
Ozzie Isaacs 2024-06-23 12:00:12 +02:00
commit d5a57e3b07
10 changed files with 70 additions and 24 deletions
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3
cps/__init__.py
View File

@ -56,6 +56,7 @@ except ImportError:
mimetypes.init()
mimetypes.add_type('application/xhtml+xml', '.xhtml')
mimetypes.add_type('application/epub+zip', '.epub')
mimetypes.add_type('application/epub+zip', '.kepub')
mimetypes.add_type('application/fb2+zip', '.fb2')
mimetypes.add_type('application/x-mobipocket-ebook', '.mobi')
mimetypes.add_type('application/x-mobipocket-ebook', '.prc')
@ -66,6 +67,7 @@ mimetypes.add_type('application/x-cbz', '.cbz')
mimetypes.add_type('application/x-cbt', '.cbt')
mimetypes.add_type('application/x-cb7', '.cb7')
mimetypes.add_type('image/vnd.djv', '.djv')
mimetypes.add_type('image/vnd.djv', '.djvu')
mimetypes.add_type('application/mpeg', '.mpeg')
mimetypes.add_type('application/mpeg', '.mp3')
mimetypes.add_type('application/mp4', '.m4a')
@ -73,6 +75,7 @@ mimetypes.add_type('application/mp4', '.m4b')
mimetypes.add_type('application/ogg', '.ogg')
mimetypes.add_type('application/ogg', '.oga')
mimetypes.add_type('text/css', '.css')
mimetypes.add_type('application/x-ms-reader', '.lit')
mimetypes.add_type('text/javascript; charset=UTF-8', '.js')
log = logger.create()

3
cps/admin.py
View File

@ -1780,7 +1780,7 @@ def _configuration_update_helper():
to_save["config_upload_formats"] = ','.join(
helper.uniq([x.lstrip().rstrip().lower() for x in to_save["config_upload_formats"].split(',')]))
_config_string(to_save, "config_upload_formats")
constants.EXTENSIONS_UPLOAD = config.config_upload_formats.split(',')
# constants.EXTENSIONS_UPLOAD = config.config_upload_formats.split(',')
_config_string(to_save, "config_calibre")
_config_string(to_save, "config_binariesdir")
@ -1830,6 +1830,7 @@ def _configuration_update_helper():
reboot_required |= reboot
# security configuration
_config_checkbox(to_save, "config_check_extensions")
_config_checkbox(to_save, "config_password_policy")
_config_checkbox(to_save, "config_password_number")
_config_checkbox(to_save, "config_password_lower")

3
cps/config_sql.py
View File

@ -169,6 +169,7 @@ class _Settings(_Base):
config_ratelimiter = Column(Boolean, default=True)
config_limiter_uri = Column(String, default="")
config_limiter_options = Column(String, default="")
config_check_extensions = Column(Boolean, default=True)
def __repr__(self):
return self.__class__.__name__
@ -348,7 +349,7 @@ class ConfigSQL(object):
db_file = os.path.join(self.config_calibre_dir, 'metadata.db')
have_metadata_db = os.path.isfile(db_file)
self.db_configured = have_metadata_db
constants.EXTENSIONS_UPLOAD = [x.lstrip().rstrip().lower() for x in self.config_upload_formats.split(',')]
# constants.EXTENSIONS_UPLOAD = [x.lstrip().rstrip().lower() for x in self.config_upload_formats.split(',')]
from . import cli_param
if os.environ.get('FLASK_DEBUG'):
logfile = logger.setup(logger.LOG_TO_STDOUT, logger.logging.DEBUG)

35
cps/editbooks.py
View File

@ -27,22 +27,7 @@ from shutil import copyfile
from uuid import uuid4
from markupsafe import escape, Markup # dependency of flask
from functools import wraps
# from lxml.etree import ParserError
#try:
# # at least bleach 6.0 is needed -> incomplatible change from list arguments to set arguments
# from bleach import clean_text as clean_html
# BLEACH = True
#except ImportError:
# try:
# BLEACH = False
# from nh3 import clean as clean_html
# except ImportError:
# try:
# BLEACH = False
# from lxml.html.clean import clean_html
# except ImportError:
# clean_html = None
from flask import Blueprint, request, flash, redirect, url_for, abort, Response
from flask_babel import gettext as _
@ -62,7 +47,7 @@ from .render_template import render_title_template
from .usermanagement import login_required_if_no_ano
from .kobo_sync_status import change_archived_books
from .redirect import get_redirect_location
from .file_helper import validate_mime_type
editbook = Blueprint('edit-book', __name__)
log = logger.create()
@ -738,9 +723,15 @@ def create_book_on_upload(modify_date, meta):
def file_handling_on_upload(requested_file):
# check if file extension is correct
allowed_extensions = config.config_upload_formats.split(',')
if requested_file:
if config.config_check_extensions:
if not validate_mime_type(requested_file, allowed_extensions):
flash(_("File type isn't allowed to be uploaded to this server"), category="error")
return None, Response(json.dumps({"location": url_for("web.index")}), mimetype='application/json')
if '.' in requested_file.filename:
file_ext = requested_file.filename.rsplit('.', 1)[-1].lower()
if file_ext not in constants.EXTENSIONS_UPLOAD and '' not in constants.EXTENSIONS_UPLOAD:
if file_ext not in allowed_extensions and '' not in allowed_extensions:
flash(
_("File extension '%(ext)s' is not allowed to be uploaded to this server",
ext=file_ext), category="error")
@ -1191,7 +1182,12 @@ def edit_cc_data(book_id, book, to_save, cc):
def upload_single_file(file_request, book, book_id):
# Check and handle Uploaded file
requested_file = file_request.files.get('btn-upload-format', None)
allowed_extensions = config.config_upload_formats.split(',')
if requested_file:
if config.config_check_extensions:
if not validate_mime_type(requested_file, allowed_extensions):
flash(_("File type isn't allowed to be uploaded to this server"), category="error")
return False
# check for empty request
if requested_file.filename != '':
if not current_user.role_upload():
@ -1199,7 +1195,7 @@ def upload_single_file(file_request, book, book_id):
return False
if '.' in requested_file.filename:
file_ext = requested_file.filename.rsplit('.', 1)[-1].lower()
if file_ext not in constants.EXTENSIONS_UPLOAD and '' not in constants.EXTENSIONS_UPLOAD:
if file_ext not in allowed_extensions and '' not in allowed_extensions:
flash(_("File extension '%(ext)s' is not allowed to be uploaded to this server", ext=file_ext),
category="error")
return False
@ -1216,7 +1212,8 @@ def upload_single_file(file_request, book, book_id):
try:
os.makedirs(filepath)
except OSError:
flash(_("Failed to create path %(path)s (Permission denied).", path=filepath), category="error")
flash(_("Failed to create path %(path)s (Permission denied).", path=filepath),
category="error")
return False
try:
requested_file.save(saved_filename)

38
cps/file_helper.py
View File

@ -19,6 +19,18 @@
from tempfile import gettempdir
import os
import shutil
import zipfile
import mimetypes
import copy
from io import BytesIO
try:
import magic
except ImportError:
pass
from . import logger
log = logger.create()
def get_temp_dir():
tmp_dir = os.path.join(gettempdir(), 'calibre_web')
@ -30,3 +42,29 @@ def get_temp_dir():
def del_temp_dir():
tmp_dir = os.path.join(gettempdir(), 'calibre_web')
shutil.rmtree(tmp_dir)
def validate_mime_type(file_buffer, allowed_extensions):
mime = magic.Magic(mime=True)
allowed_mimetypes =list()
for x in allowed_extensions:
try:
allowed_mimetypes.append(mimetypes.types_map["." + x])
except KeyError as e:
log.error("Unkown mimetype for Extension: {}".format(x))
tmp_mime_type = mime.from_buffer(file_buffer.read())
file_buffer.seek(0)
if any(mime_type in tmp_mime_type for mime_type in allowed_mimetypes):
return True
# Some epubs show up as zip mimetypes
elif "zip" in tmp_mime_type:
try:
with zipfile.ZipFile(BytesIO(file_buffer.read()), 'r') as epub:
file_buffer.seek(0)
if "mimetype" in epub.namelist():
return True
except:
file_buffer.seek(0)
pass
return False

2
cps/render_template.py
View File

@ -112,7 +112,7 @@ def render_title_template(*args, **kwargs):
sidebar, simple = get_sidebar_config(kwargs)
try:
return render_template(instance=config.config_calibre_web_title, sidebar=sidebar, simple=simple,
accept=constants.EXTENSIONS_UPLOAD,
accept=config.config_upload_formats.split(','),
*args, **kwargs)
except PermissionError:
log.error("No permission to access {} file.".format(args[0]))

4
cps/templates/config_edit.html
View File

@ -377,6 +377,10 @@
<input type="text" class="form-control" id="config_limiter_options" name="config_limiter_options" value="{% if config.config_limiter_options != None %}{{ config.config_limiter_options }}{% endif %}" autocomplete="off">
</div>
</div>
<div class="form-group">
<input type="checkbox" id="config_check_extensions" name="config_check_extensions" {% if config.config_check_extensions %}checked{% endif %}>
<label for="config_check_extensions">{{_('Check if file extensions matches file content on upload')}}</label>
</div>
<div class="form-group">
<label for="config_session">{{_('Session protection')}}</label>
<select name="config_session" id="config_session" class="form-control">

2
cps/uploader.py
View File

@ -23,7 +23,7 @@ from flask_babel import gettext as _
from . import logger, comic, isoLanguages
from .constants import BookMeta
from .helper import split_authors
from .file_helper import get_temp_dir
from .file_helper import get_temp_dir, validate_mime_type
log = logger.create()

3
cps/web.py
View File

@ -1582,7 +1582,8 @@ def read_book(book_id, book_format):
return render_title_template('readtxt.html', txtfile=book_id, title=book.title)
elif book_format.lower() in ["djvu", "djv"]:
log.debug("Start djvu reader for %d", book_id)
return render_title_template('readdjvu.html', djvufile=book_id, title=book.title, extension=book_format.lower())
return render_title_template('readdjvu.html', djvufile=book_id, title=book.title,
extension=book_format.lower())
else:
for fileExt in constants.EXTENSIONS_AUDIO:
if book_format.lower() == fileExt:

1
requirements.txt
View File

@ -19,3 +19,4 @@ chardet>=3.0.0,<4.1.0
advocate>=1.0.0,<1.1.0
Flask-Limiter>=2.3.0,<3.6.0
regex>=2022.3.2,<2024.2.25
python-magic>=0.4.27,<0.5.0