Bump version

Otherwise discovery would stop after entering key passphrase

.github/workflows/testpackage.yml

@@ -22,6 +22,10 @@ jobs:
     - name: Install package
       run: |
         pip install -e .
+    - name: Check format with isort
+      run: |
+        pip install isort
+        isort -c opendrop/**.py
     - name: Check format with black
       run: |
         pip install black
@@ -30,6 +34,10 @@ jobs:
       run: |
         pip install flake8
         flake8 . --count --show-source --statistics
+    - name: Lint with pylint
+      run: |
+        pip install pylint
+        pylint --rcfile=setup.cfg opendrop
     - name: Test with pytest
       run: |
         pip install pytest

Makefile

@@ -1,9 +1,9 @@
-.PHONY: ci checkformat lint test autoformat
+.PHONY: ci checkformat isort lint pylint test autoformat
 
 VENV=venv
 PYTHON=$(VENV)/bin/python3
 
-ci: checkformat lint test
+ci: isort checkformat lint pylint test
 
 $(VENV): $(VENV)/bin/activate
 
@@ -23,8 +23,15 @@ checkformat: $(VENV)
 lint: $(VENV)	
 	$(PYTHON) -m flake8 . --count --show-source --statistics --exclude $(VENV)
 
+pylint: $(VENV)
+	$(PYTHON) -m pylint --rcfile=setup.cfg opendrop
+
+isort: $(VENV)
+	$(PYTHON) -m isort -c opendrop/**.py
+
 test: $(VENV)
 	$(PYTHON) -m pytest
 
 autoformat: $(VENV)
+	$(PYTHON) -m isort opendrop/**.py
 	$(PYTHON) -m black . --exclude $(VENV)

README.md

@@ -52,17 +52,17 @@ pip3 install ./opendrop
 We briefly explain how to send and receive files using `opendrop`.
 To see all command line options, run `opendrop -h`.
 
-### Sending a File
+### Sending a File or a Link
 
 Sending a file is typically a two-step procedure. You first discover devices in proximity using the `find` command.
 Stop the process once you have found the receiver.
 ```
 $ opendrop find
-Looking for receivers. Press enter to stop ...
+Looking for receivers. Press Ctrl+C to stop ...
 Found  index 0  ID eccb2f2dcfe7  name John’s iPhone
 Found  index 1  ID e63138ac6ba8  name Jane’s MacBook Pro
 ```
-You can then `send` a file using 
+You can then `send` a file (or link, see below) using 
 ```
 $ opendrop send -r 0 -f /path/to/some/file
 Asking receiver to accept ...
@@ -73,6 +73,13 @@ Uploading has been successful
 Instead of the `index`, you can also use `ID` or `name`.
 OpenDrop will try to interpret the input in the order (1) `index`, (2) `ID`, and (3) `name` and fail if no match was found.
 
+**Sending a web link.** Since v0.13, OpenDrop supports sending web links, i.e., URLs, so that receiving Apple devices will immediately open their browser upon accepting. 
+(Note that OpenDrop _receivers_ still only support receiving regular files.)
+
+```
+$ opendrop send -r 0 -f https://owlink.org --url
+```
+
 ### Receiving Files
 
 Receiving is much easier. Simply use the `receive` command. OpenDrop will accept all incoming files automatically and put received files in the current directory.
@@ -94,7 +101,8 @@ OpenDrop is the result of a research project and, thus, has several limitations
 
 ## Our Papers
 
-* Milan Stute, Sashank Narain, Alex Mariotto, Alexander Heinrich, David Kreitschmann, Guevara Noubir, and Matthias Hollick. **A Billion Open Interfaces for Eve and Mallory: MitM, DoS, and Tracking Attacks on iOS and macOS Through Apple Wireless Direct Link.** *28th USENIX Security Symposium (USENIX Security ’19)*, August 14–16, 2019, Santa Clara, CA, USA. [Link](https://www.usenix.org/conference/usenixsecurity19/presentation/stute)
+* Alexander Heinrich, Matthias Hollick, Thomas Schneider, Milan Stute, and Christian Weinert. **PrivateDrop: Practical Privacy-Preserving Authentication for Apple AirDrop.** *30th USENIX Security Symposium (USENIX Security ’21)*, August 14–16, 2019, virtual Event. [Paper](https://www.usenix.org/conference/usenixsecurity21/presentation/heinrich) [Website](https://privatedrop.github.io) [Code](https://github.com/seemoo-lab/privatedrop)
+* Milan Stute, Sashank Narain, Alex Mariotto, Alexander Heinrich, David Kreitschmann, Guevara Noubir, and Matthias Hollick. **A Billion Open Interfaces for Eve and Mallory: MitM, DoS, and Tracking Attacks on iOS and macOS Through Apple Wireless Direct Link.** *28th USENIX Security Symposium (USENIX Security ’19)*, August 14–16, 2019, Santa Clara, CA, USA. [Paper](https://www.usenix.org/conference/usenixsecurity19/presentation/stute)
 
 
 ## Authors

opendrop/__init__.py

@@ -21,11 +21,11 @@ import logging
 import os
 import platform
 
-__version__ = "0.12.1"
+__version__ = "0.13.0"
 
 if platform.system() == "Darwin":
     dyld_path = os.environ.get("DYLD_LIBRARY_PATH", "")  # save old path
     archive_path = "/usr/local/opt/libarchive/lib"
-    os.environ["DYLD_LIBRARY_PATH"] = "{}:{}".format(dyld_path, archive_path)
+    os.environ["DYLD_LIBRARY_PATH"] = f"{dyld_path}:{archive_path}"
 
 logger = logging.getLogger(__name__)

opendrop/cli.py

@@ -41,6 +41,9 @@ class AirDropCli:
         parser = argparse.ArgumentParser()
         parser.add_argument("action", choices=["receive", "find", "send"])
         parser.add_argument("-f", "--file", help="File to be sent")
+        parser.add_argument(
+            "-u", "--url", help="'-f,--file is a URL", action="store_true"
+        )
         parser.add_argument(
             "-r",
             "--receiver",
@@ -99,9 +102,10 @@ class AirDropCli:
             else:  # args.action == 'send'
                 if args.file is None:
                     parser.error("Need -f,--file when using send")
-                if not os.path.isfile(args.file):
+                if not os.path.isfile(args.file) and not args.url:
                     parser.error("File in -f,--file not found")
                 self.file = args.file
+                self.is_url = args.url
                 if args.receiver is None:
                     parser.error("Need -r,--receiver when using send")
                 self.receiver = args.receiver
@@ -113,18 +117,16 @@ class AirDropCli:
                 self.server.stop()
 
     def find(self):
-        logger.info("Looking for receivers. Press enter to stop ...")
+        logger.info("Looking for receivers. Press Ctrl+C to stop ...")
         self.browser = AirDropBrowser(self.config)
         self.browser.start(callback_add=self._found_receiver)
         try:
-            input()
+            threading.Event().wait()
         except KeyboardInterrupt:
             pass
         finally:
             self.browser.stop()
-            logger.debug(
-                "Save discovery results to {}".format(self.config.discovery_report)
-            )
+            logger.debug(f"Save discovery results to {self.config.discovery_report}")
             with open(self.config.discovery_report, "w") as f:
                 json.dump(self.discover, f)
 
@@ -136,16 +138,12 @@ class AirDropCli:
         try:
             address = info.parsed_addresses()[0]  # there should only be one address
         except IndexError:
-            logger.warn("Ignoring receiver with missing address {}".format(info))
+            logger.warning(f"Ignoring receiver with missing address {info}")
             return
-        id = info.name.split(".")[0]
+        identifier = info.name.split(".")[0]
         hostname = info.server
         port = int(info.port)
-        logger.debug(
-            "AirDrop service found: {}, {}:{}, ID {}".format(
-                hostname, address, port, id
-            )
-        )
+        logger.debug(f"AirDrop service found: {hostname}, {address}:{port}, ID {id}")
         client = AirDropClient(self.config, (address, int(port)))
         try:
             flags = int(info.properties[b"flags"])
@@ -167,18 +165,16 @@ class AirDropCli:
             "name": receiver_name,
             "address": address,
             "port": port,
-            "id": id,
+            "id": identifier,
             "flags": flags,
             "discoverable": discoverable,
         }
         self.lock.acquire()
         self.discover.append(node_info)
         if discoverable:
-            logger.info(
-                "Found  index {}  ID {}  name {}".format(index, id, receiver_name)
-            )
+            logger.info(f"Found  index {index}  ID {identifier}  name {receiver_name}")
         else:
-            logger.debug("Receiver ID {} is not discoverable".format(id))
+            logger.debug(f"Receiver ID {identifier} is not discoverable")
         self.lock.release()
 
     def receive(self):
@@ -192,12 +188,12 @@ class AirDropCli:
             return
         self.client = AirDropClient(self.config, (info["address"], info["port"]))
         logger.info("Asking receiver to accept ...")
-        if not self.client.send_ask(self.file):
+        if not self.client.send_ask(self.file, is_url=self.is_url):
             logger.warning("Receiver declined")
             return
         logger.info("Receiver accepted")
         logger.info("Uploading file ...")
-        if not self.client.send_upload(self.file):
+        if not self.client.send_upload(self.file, is_url=self.is_url):
             logger.warning("Uploading has failed")
             return
         logger.info("Uploading has been successful")
@@ -209,8 +205,7 @@ class AirDropCli:
         age = time.time() - os.path.getmtime(self.config.discovery_report)
         if age > 60:  # warn if report is older than a minute
             logger.warning(
-                "Old discovery report (%.1f seconds), consider running 'opendrop find' again",
-                age,
+                f"Old discovery report ({age:.1f} seconds), consider running 'opendrop find' again"
             )
         with open(self.config.discovery_report, "r") as f:
             infos = json.load(f)

opendrop/client.py

@@ -28,9 +28,9 @@ from http.client import HTTPSConnection
 
 import fleep
 import libarchive
+from zeroconf import IPVersion, ServiceBrowser, Zeroconf
 
-from .util import AirDropUtil, AbsArchiveWrite
-from zeroconf import ServiceBrowser, Zeroconf, IPVersion
+from .util import AbsArchiveWrite, AirDropUtil
 
 logger = logging.getLogger(__name__)
 
@@ -41,14 +41,11 @@ class AirDropBrowser:
         if self.ip_addr is None:
             if config.interface == "awdl0":
                 raise RuntimeError(
-                    "Interface {} does not have an IPv6 address. "
-                    "Make sure that `owl` is running.".format(config.interface)
+                    f"Interface {config.interface} does not have an IPv6 address. Make sure that `owl` is running."
                 )
             else:
                 raise RuntimeError(
-                    "Interface {} does not have an IPv6 address".format(
-                        config.interface
-                    )
+                    f"Interface {config.interface} does not have an IPv6 address"
                 )
 
         self.zeroconf = Zeroconf(
@@ -76,15 +73,15 @@ class AirDropBrowser:
         self.browser = None
         self.zeroconf.close()
 
-    def add_service(self, zeroconf, type, name):
-        info = zeroconf.get_service_info(type, name)
-        logger.debug("Add service {}".format(name))
+    def add_service(self, zeroconf, service_type, name):
+        info = zeroconf.get_service_info(service_type, name)
+        logger.debug(f"Add service {name}")
         if self.callback_add is not None:
             self.callback_add(info)
 
-    def remove_service(self, zeroconf, type, name):
-        info = zeroconf.get_service_info(type, name)
-        logger.debug("Remove service {}".format(name))
+    def remove_service(self, zeroconf, service_type, name):
+        info = zeroconf.get_service_info(service_type, name)
+        logger.debug(f"Remove service {name}")
         if self.callback_remove is not None:
             self.callback_remove(info)
 
@@ -97,10 +94,10 @@ class AirDropClient:
         self.http_conn = None
 
     def send_POST(self, url, body, headers=None):
-        logger.debug("Send {} request".format(url))
+        logger.debug(f"Send {url} request")
 
         AirDropUtil.write_debug(
-            self.config, body, "send_{}_request.plist".format(url.lower().strip("/"))
+            self.config, body, f"send_{url.lower().strip('/')}_request.plist"
         )
 
         _headers = self._get_headers()
@@ -122,15 +119,15 @@ class AirDropClient:
         AirDropUtil.write_debug(
             self.config,
             response_bytes,
-            "send_{}_response.plist".format(url.lower().strip("/")),
+            f"send_{url.lower().strip('/')}_response.plist",
         )
 
         if http_resp.status != 200:
             status = False
-            logger.debug("{} request failed: {}".format(url, http_resp.status))
+            logger.debug(f"{url} request failed: {http_resp.status}")
         else:
             status = True
-            logger.debug("{} request successful".format(url))
+            logger.debug(f"{url} request successful")
         return status, response_bytes
 
     def send_discover(self):
@@ -138,14 +135,16 @@ class AirDropClient:
         if self.config.record_data:
             discover_body["SenderRecordData"] = self.config.record_data
 
-        discover_plist_binary = plistlib.dumps(discover_body, fmt=plistlib.FMT_BINARY)
-        success, response_bytes = self.send_POST("/Discover", discover_plist_binary)
+        discover_plist_binary = plistlib.dumps(
+            discover_body, fmt=plistlib.FMT_BINARY  # pylint: disable=no-member
+        )
+        _, response_bytes = self.send_POST("/Discover", discover_plist_binary)
         response = plistlib.loads(response_bytes)
 
         # if name is returned, then receiver is discoverable
         return response.get("ReceiverComputerName")
 
-    def send_ask(self, file_path, icon=None):
+    def send_ask(self, file_path, is_url=False, icon=None):
         ask_body = {
             "SenderComputerName": self.config.computer_name,
             "BundleID": "com.apple.finder",
@@ -156,18 +155,6 @@ class AirDropClient:
         if self.config.record_data:
             ask_body["SenderRecordData"] = self.config.record_data
 
-        if isinstance(file_path, str):
-            file_path = [file_path]
-
-        # generate icon for first file
-        with open(file_path[0], "rb") as f:
-            file_header = f.read(128)
-            flp = fleep.get(file_header)
-            if not icon and len(flp.mime) > 0 and "image" in flp.mime[0]:
-                icon = AirDropUtil.generate_file_icon(f.name)
-        if icon:
-            ask_body["FileIcon"] = icon
-
         def file_entries(files):
             for file in files:
                 file_name = os.path.basename(file)
@@ -180,18 +167,36 @@ class AirDropClient:
                 }
                 yield file_entry
 
-        ask_body["Files"] = [e for e in file_entries(file_path)]
-        ask_body["Items"] = []
+        if isinstance(file_path, str):
+            file_path = [file_path]
+        if is_url:
+            ask_body["Items"] = file_path
+        else:
+            # generate icon for first file
+            with open(file_path[0], "rb") as f:
+                file_header = f.read(128)
+                flp = fleep.get(file_header)
+                if not icon and len(flp.mime) > 0 and "image" in flp.mime[0]:
+                    icon = AirDropUtil.generate_file_icon(f.name)
+            ask_body["Files"] = [e for e in file_entries(file_path)]
+        if icon:
+            ask_body["FileIcon"] = icon
 
-        ask_binary = plistlib.dumps(ask_body, fmt=plistlib.FMT_BINARY)
+        ask_binary = plistlib.dumps(
+            ask_body, fmt=plistlib.FMT_BINARY  # pylint: disable=no-member
+        )
         success, _ = self.send_POST("/Ask", ask_binary)
 
         return success
 
-    def send_upload(self, file_path):
+    def send_upload(self, file_path, is_url=False):
         """
         Send a file to a receiver.
         """
+        # Don't send an upload request if we just sent a link
+        if is_url:
+            return
+
         headers = {
             "Content-Type": "application/x-cpio",
         }
@@ -247,7 +252,7 @@ class HTTPSConnectionAWDL(HTTPSConnection):
         *,
         context=None,
         check_hostname=None,
-        interface_name=None
+        interface_name=None,
     ):
 
         if interface_name is not None:
@@ -290,7 +295,7 @@ class HTTPSConnectionAWDL(HTTPSConnection):
         host, port = address
         err = None
         for res in socket.getaddrinfo(host, port, 0, socket.SOCK_STREAM):
-            af, socktype, proto, canonname, sa = res
+            af, socktype, proto, _, sa = res
             sock = None
             try:
                 sock = socket.socket(af, socktype, proto)

opendrop/config.py

@@ -81,9 +81,7 @@ class AirDropConfig:
         self.port = server_port
 
         if service_id is None:
-            service_id = "{0:0{1}x}".format(
-                random.randint(0, 0xFFFFFFFFFFFF), 12
-            )  # random 6-byte string in base16
+            service_id = f"{random.randint(0, 0xFFFFFFFFFFFF):012x}"  # random 6-byte string in base16
         self.service_id = service_id
 
         self.debug = debug
@@ -109,7 +107,7 @@ class AirDropConfig:
         self.root_ca_file = resource_filename("opendrop", "certs/apple_root_ca.pem")
         if not os.path.exists(self.root_ca_file):
             raise FileNotFoundError(
-                "Need Apple root CA certificate: {}".format(self.root_ca_file)
+                f"Need Apple root CA certificate: {self.root_ca_file}"
             )
 
         self.key_dir = os.path.join(self.airdrop_dir, "keys")
@@ -130,7 +128,7 @@ class AirDropConfig:
             logger.debug("No Apple ID Validation Record found")
 
     def create_default_key(self):
-        logger.info("Create new self-signed certificate in {}".format(self.key_dir))
+        logger.info(f"Create new self-signed certificate in {self.key_dir}")
         if not os.path.exists(self.key_dir):
             os.makedirs(self.key_dir)
         subprocess.run(
@@ -148,17 +146,19 @@ class AirDropConfig:
                 "-out",
                 "certificate.pem",
                 "-subj",
-                "/CN={}".format(self.computer_name),
+                f"/CN={self.computer_name}",
             ],
             cwd=self.key_dir,
             stdout=subprocess.PIPE,
             stderr=subprocess.PIPE,
+            check=True,
         )
 
     def get_ssl_context(self):
-        ctx = ssl.SSLContext(
+
+        ctx = ssl.SSLContext(  # lgtm[py/insecure-protocol], TODO see https://github.com/Semmle/ql/issues/2554
             ssl.PROTOCOL_TLS
-        )  # lgtm[py/insecure-protocol], TODO see https://github.com/Semmle/ql/issues/2554
+        )
         ctx.options |= ssl.OP_NO_TLSv1  # TLSv1.0 is insecure
         ctx.load_cert_chain(self.cert_file, keyfile=self.key_file)
         ctx.load_verify_locations(cafile=self.root_ca_file)

opendrop/server.py

@@ -23,14 +23,14 @@ import platform
 import plistlib
 import socket
 import time
-from http.server import HTTPServer, BaseHTTPRequestHandler
+from http.server import BaseHTTPRequestHandler, HTTPServer
 
 import libarchive
 import libarchive.extract
 import libarchive.read
+from zeroconf import IPVersion, ServiceInfo, Zeroconf
 
 from .util import AirDropUtil
-from zeroconf import Zeroconf, ServiceInfo, IPVersion
 
 logger = logging.getLogger(__name__)
 
@@ -54,14 +54,11 @@ class AirDropServer:
         if self.ip_addr is None:
             if self.config.interface == "awdl0":
                 raise RuntimeError(
-                    "Interface {} does not have an IPv6 address. "
-                    "Make sure that `owl` is running.".format(self.config.interface)
+                    f"Interface {self.config.interface} does not have an IPv6 address. Make sure that `owl` is running."
                 )
             else:
                 raise RuntimeError(
-                    "Interface {} does not have an IPv6 address".format(
-                        self.config.interface
-                    )
+                    f"Interface {self.config.interface} does not have an IPv6 address"
                 )
 
         self.Handler = AirDropServerHandler
@@ -92,9 +89,7 @@ class AirDropServer:
 
     def start_service(self):
         logger.info(
-            "Announcing service: host {}, address {}, port {}".format(
-                self.config.host_name, self.ip_addr, self.config.port
-            )
+            f"Announcing service: host {self.config.host_name}, address {self.ip_addr}, port {self.config.port}"
         )
         self.zeroconf.register_service(self.service_info)
 
@@ -162,7 +157,7 @@ class AirDropServerHandler(BaseHTTPRequestHandler):
         """
         Answer get requests
         """
-        logger.debug("GET request at {}".format(self.path))
+        logger.debug(f"GET request at {self.path}")
         body = "\n".encode("utf-8")
         self._set_response(len(body))
         self.wfile.write(body)
@@ -215,7 +210,7 @@ class AirDropServerHandler(BaseHTTPRequestHandler):
             discover_answer["ReceiverRecordData"] = self.config.record_data
 
         discover_answer_binary = plistlib.dumps(
-            discover_answer, fmt=plistlib.FMT_BINARY
+            discover_answer, fmt=plistlib.FMT_BINARY  # pylint: disable=no-member
         )
 
         AirDropUtil.write_debug(
@@ -236,7 +231,9 @@ class AirDropServerHandler(BaseHTTPRequestHandler):
             "ReceiverModelName": self.config.computer_model,
             "ReceiverComputerName": self.config.computer_name,
         }
-        ask_resp_binary = plistlib.dumps(ask_response, fmt=plistlib.FMT_BINARY)
+        ask_resp_binary = plistlib.dumps(
+            ask_response, fmt=plistlib.FMT_BINARY  # pylint: disable=no-member
+        )
 
         AirDropUtil.write_debug(
             self.config, ask_resp_binary, "receive_ask_response.plist"
@@ -248,7 +245,7 @@ class AirDropServerHandler(BaseHTTPRequestHandler):
     def handle_upload(self):
         if self.headers.get("content-type", "").lower() != "application/x-cpio":
             logger.warning(
-                "Unsupported content-type: {}".format(self.headers.get("content-type"))
+                f"Unsupported content-type: {self.headers.get('content-type')}"
             )
             self.send_response(406)  # Unprocessable Entity
             self.send_header("Content-Type", "application/x-cpio")
@@ -309,9 +306,7 @@ class AirDropServerHandler(BaseHTTPRequestHandler):
         transferred = reader.total / 1024.0 / 1024.0
         speed = transferred / (time.time() - start)
         logger.info(
-            "File(s) received (size {:.02f} MB, speed {:.02f} MB/s)".format(
-                transferred, speed
-            )
+            f"File(s) received (size {transferred:.02f} MB, speed {speed:.02f} MB/s)"
         )
 
         self.send_response(200)
@@ -324,8 +319,8 @@ class AirDropServerHandler(BaseHTTPRequestHandler):
         Handle post requests
         """
 
-        logger.debug("POST request at {}".format(self.path))
-        logger.debug("Headers\n{}".format(self.headers))
+        logger.debug(f"POST request at {self.path}")
+        logger.debug(f"Headers\n{self.headers}")
 
         if self.path == "/Discover":
             self.handle_discover()
@@ -334,14 +329,13 @@ class AirDropServerHandler(BaseHTTPRequestHandler):
         elif self.path == "/Upload":
             self.handle_upload()
         else:
-            logger.debug("POST request at {}".format(self.path))
+            logger.debug(f"POST request at {self.path}")
             self.send_response(400)
             self.send_header("Content-Length", 0)
             self.end_headers()
 
     def log_message(self, format, *args):
+        # pylint: disable=redefined-builtin
         logger.debug(
-            "{} - - [{}] {}".format(
-                self.client_address[0], self.log_date_time_string(), format % args
-            )
+            f"{self.client_address[0]} - - [{self.log_date_time_string()}] {format % args}"
         )

opendrop/util.py

@@ -17,29 +17,25 @@ You should have received a copy of the GNU General Public License
 along with this program.  If not, see <https://www.gnu.org/licenses/>.
 """
 
-import base64
-import datetime
-import hashlib
 import io
 import ipaddress
 import os
-import plistlib
 
 import ifaddr
-from PIL import Image, ExifTags
-from libarchive import ffi
-from libarchive.entry import new_archive_entry, ArchiveEntry
-from libarchive.ffi import (
+from libarchive.entry import ArchiveEntry, new_archive_entry
+from libarchive.ffi import (  # pylint: disable=no-name-in-module
     ARCHIVE_EOF,
-    entry_sourcepath,
     entry_clear,
-    read_next_header2,
+    entry_sourcepath,
     read_disk_descend,
-    write_header,
+    read_next_header2,
     write_data,
     write_finish_entry,
+    write_get_bytes_per_block,
+    write_header,
 )
 from libarchive.write import ArchiveWrite, new_archive_read_disk
+from PIL import ExifTags, Image
 
 
 class AirDropUtil:
@@ -104,7 +100,7 @@ class AirDropUtil:
         try:
             exif = dict(
                 (ExifTags.TAGS[k], v)
-                for k, v in im._getexif().items()
+                for k, v in im._getexif().items()  # pylint: disable=protected-access
                 if k in ExifTags.TAGS
             )
             angles = {3: 180, 6: 270, 8: 90}
@@ -116,15 +112,15 @@ class AirDropUtil:
 
         # Big image
         im.thumbnail((540, 540), Image.ANTIALIAS)
-        imgByteArr = io.BytesIO()
-        im.save(imgByteArr, format="JPEG2000")
-        file_icon = imgByteArr.getvalue()
+        img_bytes = io.BytesIO()
+        im.save(img_bytes, format="JPEG2000")
+        file_icon = img_bytes.getvalue()
 
         # Small image
         # im.thumbnail((64, 64), Image.ANTIALIAS)
-        # imgByteArr = io.BytesIO()
-        # im.save(imgByteArr, format='JPEG2000')
-        # small_file_icon = imgByteArr.getvalue()
+        # img_bytes = io.BytesIO()
+        # im.save(img_bytes, format='JPEG2000')
+        # small_file_icon = img_bytes.getvalue()
 
         return file_icon
 
@@ -180,7 +176,7 @@ class AbsArchiveWrite(ArchiveWrite):
         """
         write_p = self._pointer
 
-        block_size = ffi.write_get_bytes_per_block(write_p)
+        block_size = write_get_bytes_per_block(write_p)
         if block_size <= 0:
             block_size = 10240  # pragma: no cover
 

requirements-dev.txt

@@ -1,4 +1,6 @@
 black
 flake8
 flake8-bugbear
+isort
+pylint
 pytest

setup.cfg

@@ -2,4 +2,16 @@
 extend-ignore = E203, E501
 max-line-length = 80
 max-complexity = 18
-select = B9
+select = B9
+
+[isort]
+multi_line_output = 3
+include_trailing_comma = True
+force_grid_wrap = 0
+use_parentheses = True
+ensure_newline_before_comments = True
+line_length = 88
+
+[pylint]
+disable = C, R, W0511, W1203
+max-line-length = 88