oremanj · oremanj · Jan 13, 2022 · Jan 13, 2022
diff --git a/CHANGES.txt b/CHANGES.txt
@@ -1,11 +1,11 @@
-v0.9.0, unreleased
+v0.9.0, 12 Jan 2021
     Improve usability when Packet objects are retained past the callback
     Add Packet.retain() to save the packet contents in such cases
     Eliminate warnings during build on py3
     Add CI and basic test suite
     Raise a warning, not an error, if we don't get the bufsize we want
-    Don't allow bind() more than once on the same NetfilterQueue, since
-      that would leak the old queue handle
+    Don't allow bind() more than once on the same NetfilterQueue, since that would leak the old queue handle
+ ** This will be the last version with support for Python 2.7. **
 
 v0.8.1, 30 Jan 2017
     Fix bug #25- crashing when used in OUTPUT or POSTROUTING chains

diff --git a/MANIFEST.in b/MANIFEST.in
@@ -3,3 +3,4 @@ include *.rst
 include *.c
 include *.pyx
 include *.pxd
+recursive-include tests/ *.py
diff --git a/ci.sh b/ci.sh
@@ -5,7 +5,12 @@ set -ex -o pipefail
 pip install -U pip setuptools wheel
 sudo apt-get install libnetfilter-queue-dev
 
+# Cython is required to build the sdist...
+pip install cython
 python setup.py sdist --formats=zip
+
+# ... but not to install it
+pip uninstall -y cython
 pip install dist/*.zip
 
 if python --version 2>&1 | fgrep -q "Python 2.7"; then

diff --git a/netfilterqueue.pyx b/netfilterqueue.pyx
@@ -5,7 +5,7 @@ function.
 Copyright: (c) 2011, Kerkhoff Technologies Inc.
 License: MIT; see LICENSE.txt
 """
-VERSION = (0, 8, 1)
+VERSION = (0, 9, 0)
 
 # Constants for module users
 COPY_NONE = 0
@@ -24,21 +24,13 @@ DEF SockCopySize = MaxCopySize + SockOverhead
 # Socket queue should hold max number of packets of copysize bytes
 DEF SockRcvSize = DEFAULT_MAX_QUEUELEN * SockCopySize // 2
 
-cdef extern from "Python.h":
-    const char* __FILE__
-    int __LINE__
-
 cdef extern from *:
     """
     #if PY_MAJOR_VERSION < 3
     #define PyBytes_FromStringAndSize PyString_FromStringAndSize
     #endif
     """
 
-import socket
-import warnings
-cimport cpython.version
-
 cdef int global_callback(nfq_q_handle *qh, nfgenmsg *nfmsg,
                          nfq_data *nfa, void *data) with gil:
     """Create a Packet and pass it to appropriate callback."""
@@ -227,11 +219,11 @@ cdef class NetfilterQueue:
         newsiz = nfnl_rcvbufsiz(nfq_nfnlh(self.h), sock_len)
         if newsiz != sock_len * 2:
             try:
-                warnings.warn_explicit(
+                import warnings
+
+                warnings.warn(
                     "Socket rcvbuf limit is now %d, requested %d." % (newsiz, sock_len),
                     category=RuntimeWarning,
-                    filename=bytes(__FILE__).decode("ascii"),
-                    lineno=__LINE__,
                 )
             except:  # if warnings are being treated as errors
                 self.unbind()
@@ -267,6 +259,8 @@ cdef class NetfilterQueue:
 
     def run_socket(self, s):
         """Accept packets using socket.recv so that, for example, gevent can monkeypatch it."""
+        import socket
+
         while True:
             try:
                 buf = s.recv(BufferSize)

diff --git a/pyproject.toml b/pyproject.toml
@@ -1,3 +1,3 @@
 [build-system]
-requires = ["setuptools >= 42", "wheel", "cython"]
+requires = ["setuptools", "wheel"]
 build-backend = "setuptools.build_meta"
diff --git a/setup.py b/setup.py
@@ -1,6 +1,7 @@
+import os, sys
 from setuptools import setup, Extension
 
-VERSION = "0.8.1"  # Remember to change CHANGES.txt and netfilterqueue.pyx when version changes.
+VERSION = "0.9.0"  # Remember to change CHANGES.txt and netfilterqueue.pyx when version changes.
 
 try:
     # Use Cython
@@ -14,6 +15,14 @@
     )
 except ImportError:
     # No Cython
+    if not os.path.exists(os.path.join(os.path.dirname(__file__), "netfilterqueue.c")):
+        sys.stderr.write(
+            "You must have Cython installed (`pip install cython`) to build this "
+            "package from source.\nIf you're receiving this error when installing from "
+            "PyPI, please file a bug report at "
+            "https://github.com/oremanj/python-netfilterqueue/issues/new\n"
+        )
+        sys.exit(1)
     ext_modules = [
         Extension("netfilterqueue", ["netfilterqueue.c"], libraries=["netfilter_queue"])
     ]

diff --git a/test-requirements.in b/test-requirements.in
@@ -3,6 +3,5 @@ pytest
 trio
 pytest-trio
 async_generator
-cython
 black
 platformdirs <= 2.4.0  # needed by black; 2.4.1+ don't support py3.6
diff --git a/test-requirements.txt b/test-requirements.txt
@@ -18,8 +18,6 @@ black==21.12b0
     # via -r test-requirements.in
 click==8.0.3
     # via black
-cython==0.29.26
-    # via -r test-requirements.in
 idna==3.3
     # via trio
 iniconfig==1.1.1

diff --git a/tests/test_basic.py b/tests/test_basic.py
@@ -79,10 +79,12 @@ def set_udp_payload(p, msg):
 
 
 async def test_errors(harness):
-    with pytest.warns(RuntimeWarning, match="rcvbuf limit is"):
+    with pytest.warns(RuntimeWarning, match="rcvbuf limit is") as record:
         async with harness.capture_packets_to(2, sock_len=2 ** 30):
             pass
 
+    assert record[0].filename.endswith("conftest.py")
+
     async with harness.capture_packets_to(2, queue_num=0):
         with pytest.raises(OSError, match="Failed to create queue"):
             async with harness.capture_packets_to(2, queue_num=0):