From 949f894256945967c2c88051080baca667ea1b48 Mon Sep 17 00:00:00 2001
From: WGH <wgh@torlan.ru>
Date: Thu, 27 Oct 2016 23:49:16 +0300
Subject: [PATCH] use self.payload[:self.payload_len] for getting python string

This is more Cythonic way, documented here
http://cython.readthedocs.io/en/latest/src/tutorial/strings.html#passing-byte-strings

It compiles to
    __Pyx_PyBytes_FromStringAndSize(
        __pyx_v_self->payload + 0,
        __pyx_v_self->payload_len - 0)

Which is the Cython macro wrapper which handles both Python 2 and
Python3.

Fixes #17
---
 netfilterqueue.c   | 804 ++++++++++++++++++++++-----------------------
 netfilterqueue.pyx |   7 +-
 2 files changed, 385 insertions(+), 426 deletions(-)

diff --git a/netfilterqueue.c b/netfilterqueue.c
index 18dc32e..ce7b331 100644
--- a/netfilterqueue.c
+++ b/netfilterqueue.c
@@ -1,4 +1,4 @@
-/* Generated by Cython 0.24 */
+/* Generated by Cython 0.24.1 */
 
 #define PY_SSIZE_T_CLEAN
 #include "Python.h"
@@ -7,7 +7,7 @@
 #elif PY_VERSION_HEX < 0x02060000 || (0x03000000 <= PY_VERSION_HEX && PY_VERSION_HEX < 0x03020000)
     #error Cython requires Python 2.6+ or Python 3.2+.
 #else
-#define CYTHON_ABI "0_24"
+#define CYTHON_ABI "0_24_1"
 #include <stddef.h>
 #ifndef offsetof
   #define offsetof(type, member) ( (size_t) & ((type*)0) -> member )
@@ -110,6 +110,9 @@
 #if CYTHON_COMPILING_IN_PYPY && !defined(PyUnicode_Contains)
   #define PyUnicode_Contains(u, s)  PySequence_Contains(u, s)
 #endif
+#if CYTHON_COMPILING_IN_PYPY && !defined(PyByteArray_Check)
+  #define PyByteArray_Check(obj)  PyObject_TypeCheck(obj, &PyByteArray_Type)
+#endif
 #if CYTHON_COMPILING_IN_PYPY && !defined(PyObject_Format)
   #define PyObject_Format(obj, fmt)  PyObject_CallMethod(obj, "__format__", "O", fmt)
 #endif
@@ -235,6 +238,11 @@ static CYTHON_INLINE float __PYX_NAN() {
   return value;
 }
 #endif
+#if defined(__CYGWIN__) && defined(_LDBL_EQ_DBL)
+#define __Pyx_truncl trunc
+#else
+#define __Pyx_truncl truncl
+#endif
 
 
 #define __PYX_ERR(f_index, lineno, Ln_error) \
@@ -2224,68 +2232,24 @@ static PyObject *__pyx_pf_14netfilterqueue_6Packet_4get_payload(struct __pyx_obj
   PyObject *__pyx_v_py_string = 0;
   PyObject *__pyx_r = NULL;
   __Pyx_RefNannyDeclarations
-  int __pyx_t_1;
-  PyObject *__pyx_t_2 = NULL;
+  PyObject *__pyx_t_1 = NULL;
   __Pyx_RefNannySetupContext("get_payload", 0);
 
   /* "netfilterqueue.pyx":103
  *         """Return payload as Python string."""
  *         cdef object py_string
- *         if cpython.version.PY_MAJOR_VERSION >= 3:             # <<<<<<<<<<<<<<
- *             py_string = PyBytes_FromStringAndSize(
- *                 self.payload, self.payload_len)
- */
-  __pyx_t_1 = ((PY_MAJOR_VERSION >= 3) != 0);
-  if (__pyx_t_1) {
-
-    /* "netfilterqueue.pyx":104
- *         cdef object py_string
- *         if cpython.version.PY_MAJOR_VERSION >= 3:
- *             py_string = PyBytes_FromStringAndSize(             # <<<<<<<<<<<<<<
- *                 self.payload, self.payload_len)
- *         else:
- */
-    __pyx_t_2 = PyBytes_FromStringAndSize(__pyx_v_self->payload, __pyx_v_self->payload_len); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 104, __pyx_L1_error)
-    __Pyx_GOTREF(__pyx_t_2);
-    __pyx_v_py_string = __pyx_t_2;
-    __pyx_t_2 = 0;
-
-    /* "netfilterqueue.pyx":103
- *         """Return payload as Python string."""
- *         cdef object py_string
- *         if cpython.version.PY_MAJOR_VERSION >= 3:             # <<<<<<<<<<<<<<
- *             py_string = PyBytes_FromStringAndSize(
- *                 self.payload, self.payload_len)
- */
-    goto __pyx_L3;
-  }
-
-  /* "netfilterqueue.pyx":107
- *                 self.payload, self.payload_len)
- *         else:
- *             py_string = PyString_FromStringAndSize(             # <<<<<<<<<<<<<<
- *                 self.payload, self.payload_len)
- *         return py_string
- */
-  /*else*/ {
-
-    /* "netfilterqueue.pyx":108
- *         else:
- *             py_string = PyString_FromStringAndSize(
- *                 self.payload, self.payload_len)             # <<<<<<<<<<<<<<
+ *         py_string = self.payload[:self.payload_len]             # <<<<<<<<<<<<<<
  *         return py_string
  * 
  */
-    __pyx_t_2 = PyString_FromStringAndSize(__pyx_v_self->payload, __pyx_v_self->payload_len); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 107, __pyx_L1_error)
-    __Pyx_GOTREF(__pyx_t_2);
-    __pyx_v_py_string = __pyx_t_2;
-    __pyx_t_2 = 0;
-  }
-  __pyx_L3:;
+  __pyx_t_1 = __Pyx_PyBytes_FromStringAndSize(__pyx_v_self->payload + 0, __pyx_v_self->payload_len - 0); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 103, __pyx_L1_error)
+  __Pyx_GOTREF(__pyx_t_1);
+  __pyx_v_py_string = __pyx_t_1;
+  __pyx_t_1 = 0;
 
-  /* "netfilterqueue.pyx":109
- *             py_string = PyString_FromStringAndSize(
- *                 self.payload, self.payload_len)
+  /* "netfilterqueue.pyx":104
+ *         cdef object py_string
+ *         py_string = self.payload[:self.payload_len]
  *         return py_string             # <<<<<<<<<<<<<<
  * 
  *     cpdef Py_ssize_t get_payload_len(self):
@@ -2305,7 +2269,7 @@ static PyObject *__pyx_pf_14netfilterqueue_6Packet_4get_payload(struct __pyx_obj
 
   /* function exit code */
   __pyx_L1_error:;
-  __Pyx_XDECREF(__pyx_t_2);
+  __Pyx_XDECREF(__pyx_t_1);
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@@ -2315,7 +2279,7 @@ static PyObject *__pyx_pf_14netfilterqueue_6Packet_4get_payload(struct __pyx_obj
   return __pyx_r;
 }
 
-/* "netfilterqueue.pyx":111
+/* "netfilterqueue.pyx":106
  *         return py_string
  * 
  *     cpdef Py_ssize_t get_payload_len(self):             # <<<<<<<<<<<<<<
@@ -2337,7 +2301,7 @@ static Py_ssize_t __pyx_f_14netfilterqueue_6Packet_get_payload_len(struct __pyx_
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   /* Check if overridden in Python */
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@@ -2352,14 +2316,14 @@ static Py_ssize_t __pyx_f_14netfilterqueue_6Packet_get_payload_len(struct __pyx_
         }
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-        __pyx_t_2 = __Pyx_PyObject_CallNoArg(__pyx_t_3); if (unlikely(!__pyx_t_2)) __PYX_ERR(0, 111, __pyx_L1_error)
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@@ -2368,7 +2332,7 @@ static Py_ssize_t __pyx_f_14netfilterqueue_6Packet_get_payload_len(struct __pyx_
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-  /* "netfilterqueue.pyx":112
+  /* "netfilterqueue.pyx":107
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  *     cpdef Py_ssize_t get_payload_len(self):
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@@ -2378,7 +2342,7 @@ static Py_ssize_t __pyx_f_14netfilterqueue_6Packet_get_payload_len(struct __pyx_
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-  /* "netfilterqueue.pyx":111
+  /* "netfilterqueue.pyx":106
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  * 
  *     cpdef Py_ssize_t get_payload_len(self):             # <<<<<<<<<<<<<<
@@ -2418,7 +2382,7 @@ static PyObject *__pyx_pf_14netfilterqueue_6Packet_6get_payload_len(struct __pyx
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+  __pyx_t_1 = PyInt_FromSsize_t(__pyx_f_14netfilterqueue_6Packet_get_payload_len(__pyx_v_self, 1)); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 106, __pyx_L1_error)
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@@ -2435,7 +2399,7 @@ static PyObject *__pyx_pf_14netfilterqueue_6Packet_6get_payload_len(struct __pyx
   return __pyx_r;
 }
 
-/* "netfilterqueue.pyx":114
+/* "netfilterqueue.pyx":109
  *         return self.payload_len
  * 
  *     cpdef double get_timestamp(self):             # <<<<<<<<<<<<<<
@@ -2457,7 +2421,7 @@ static double __pyx_f_14netfilterqueue_6Packet_get_timestamp(struct __pyx_obj_14
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   /* Check if overridden in Python */
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@@ -2472,14 +2436,14 @@ static double __pyx_f_14netfilterqueue_6Packet_get_timestamp(struct __pyx_obj_14
         }
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-  /* "netfilterqueue.pyx":115
+  /* "netfilterqueue.pyx":110
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  *     cpdef double get_timestamp(self):             # <<<<<<<<<<<<<<
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+/* "netfilterqueue.pyx":112
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       __pyx_t_5 = ((errno != __pyx_e_14netfilterqueue_ENOBUFS) != 0);
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-        /* "netfilterqueue.pyx":212
+        /* "netfilterqueue.pyx":207
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@@ -4549,7 +4513,7 @@ static PyObject *__pyx_pf_14netfilterqueue_14NetfilterQueue_10run(struct __pyx_o
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         goto __pyx_L4_break;
 
-        /* "netfilterqueue.pyx":211
+        /* "netfilterqueue.pyx":206
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@@ -4562,7 +4526,7 @@ static PyObject *__pyx_pf_14netfilterqueue_14NetfilterQueue_10run(struct __pyx_o
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-  /* "netfilterqueue.pyx":197
+  /* "netfilterqueue.pyx":192
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@@ -4585,7 +4549,7 @@ static PyObject *__pyx_pf_14netfilterqueue_14NetfilterQueue_10run(struct __pyx_o
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 }
 
-/* "netfilterqueue.pyx":214
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-  /* "netfilterqueue.pyx":216
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@@ -4638,7 +4602,7 @@ static PyObject *__pyx_pf_14netfilterqueue_14NetfilterQueue_12run_socket(struct
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-    /* "netfilterqueue.pyx":217
+    /* "netfilterqueue.pyx":212
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-        /* "netfilterqueue.pyx":218
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-        /* "netfilterqueue.pyx":219
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-        /* "netfilterqueue.pyx":220
+        /* "netfilterqueue.pyx":215
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@@ -4689,17 +4653,17 @@ static PyObject *__pyx_pf_14netfilterqueue_14NetfilterQueue_12run_socket(struct
         __pyx_t_7 = ((__pyx_v_rv >= 0) != 0);
         if (__pyx_t_7) {
 
-          /* "netfilterqueue.pyx":221
+          /* "netfilterqueue.pyx":216
  *                 rv = len(buf)
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  *                 else:
  *                     break
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-          /* "netfilterqueue.pyx":220
+          /* "netfilterqueue.pyx":215
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  *                 rv = len(buf)
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@@ -4709,7 +4673,7 @@ static PyObject *__pyx_pf_14netfilterqueue_14NetfilterQueue_12run_socket(struct
           goto __pyx_L13;
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-        /* "netfilterqueue.pyx":223
+        /* "netfilterqueue.pyx":218
  *                     nfq_handle_packet(self.h, buf, rv)
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  *                     break             # <<<<<<<<<<<<<<
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-        /* "netfilterqueue.pyx":217
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  *         """Accept packets using socket.recv so that, for example, gevent can monkeypatch it."""
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@@ -4738,60 +4702,60 @@ static PyObject *__pyx_pf_14netfilterqueue_14NetfilterQueue_12run_socket(struct
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       __Pyx_XDECREF(__pyx_t_5); __pyx_t_5 = 0;
 
-      /* "netfilterqueue.pyx":224
+      /* "netfilterqueue.pyx":219
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-        /* "netfilterqueue.pyx":225
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-        /* "netfilterqueue.pyx":226
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+        __pyx_t_11 = PyObject_RichCompare(__pyx_v_err, __pyx_t_12, Py_EQ); __Pyx_XGOTREF(__pyx_t_11); if (unlikely(!__pyx_t_11)) __PYX_ERR(0, 221, __pyx_L7_except_error)
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-          /* "netfilterqueue.pyx":227
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@@ -4800,7 +4764,7 @@ static PyObject *__pyx_pf_14netfilterqueue_14NetfilterQueue_12run_socket(struct
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           goto __pyx_L15_except_continue;
 
-          /* "netfilterqueue.pyx":226
+          /* "netfilterqueue.pyx":221
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@@ -4809,35 +4773,35 @@ static PyObject *__pyx_pf_14netfilterqueue_14NetfilterQueue_12run_socket(struct
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-        /* "netfilterqueue.pyx":228
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-          /* "netfilterqueue.pyx":231
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@@ -4846,7 +4810,7 @@ static PyObject *__pyx_pf_14netfilterqueue_14NetfilterQueue_12run_socket(struct
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           goto __pyx_L14_except_break;
 
-          /* "netfilterqueue.pyx":228
+          /* "netfilterqueue.pyx":223
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@@ -4855,7 +4819,7 @@ static PyObject *__pyx_pf_14netfilterqueue_14NetfilterQueue_12run_socket(struct
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         }
 
-        /* "netfilterqueue.pyx":234
+        /* "netfilterqueue.pyx":229
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@@ -4864,7 +4828,7 @@ static PyObject *__pyx_pf_14netfilterqueue_14NetfilterQueue_12run_socket(struct
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         /*else*/ {
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-      /* "netfilterqueue.pyx":217
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-  /* "netfilterqueue.pyx":214
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-  /* "netfilterqueue.pyx":149
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-  __pyx_tuple__3 = PyTuple_Pack(1, __pyx_kp_s_Failed_to_open_NFQueue); if (unlikely(!__pyx_tuple__3)) __PYX_ERR(0, 149, __pyx_L1_error)
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-  /* "netfilterqueue.pyx":178
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-  __pyx_tuple__5 = PyTuple_Pack(1, __pyx_kp_s_Failed_to_set_packet_copy_mode); if (unlikely(!__pyx_tuple__5)) __PYX_ERR(0, 178, __pyx_L1_error)
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-  /* "netfilterqueue.pyx":218
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-  __pyx_tuple__6 = PyTuple_Pack(1, __pyx_int_4096); if (unlikely(!__pyx_tuple__6)) __PYX_ERR(0, 218, __pyx_L1_error)
+  __pyx_tuple__6 = PyTuple_Pack(1, __pyx_int_4096); if (unlikely(!__pyx_tuple__6)) __PYX_ERR(0, 213, __pyx_L1_error)
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   /* "netfilterqueue.pyx":8
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- * VERSION = (0, 6, 0)             # <<<<<<<<<<<<<<
+ * VERSION = (0, 7, 0)             # <<<<<<<<<<<<<<
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   /*--- Type import code ---*/
   /*--- Variable import code ---*/
@@ -5759,7 +5723,7 @@ PyMODINIT_FUNC PyInit_netfilterqueue(void)
   /* "netfilterqueue.pyx":8
  * License: MIT; see LICENSE.txt
  * """
- * VERSION = (0, 6, 0)             # <<<<<<<<<<<<<<
+ * VERSION = (0, 7, 0)             # <<<<<<<<<<<<<<
  * 
  * # Constants for module users
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@@ -5804,7 +5768,7 @@ PyMODINIT_FUNC PyInit_netfilterqueue(void)
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   /* "netfilterqueue.pyx":1
diff --git a/netfilterqueue.pyx b/netfilterqueue.pyx
index b317f06..2fa4d75 100644
--- a/netfilterqueue.pyx
+++ b/netfilterqueue.pyx
@@ -100,12 +100,7 @@ cdef class Packet:
     def get_payload(self):
         """Return payload as Python string."""
         cdef object py_string
-        if cpython.version.PY_MAJOR_VERSION >= 3:
-            py_string = PyBytes_FromStringAndSize(
-                self.payload, self.payload_len)
-        else:
-            py_string = PyString_FromStringAndSize(
-                self.payload, self.payload_len)
+        py_string = self.payload[:self.payload_len]
         return py_string
 
     cpdef Py_ssize_t get_payload_len(self):