path: root/contrib/python/cryptography/build/temp.linux-x86_64-2.7/_padding.c

#define _CFFI_ 
 
/* We try to define Py_LIMITED_API before including Python.h. 
 
   Mess: we can only define it if Py_DEBUG, Py_TRACE_REFS and 
   Py_REF_DEBUG are not defined.  This is a best-effort approximation: 
   we can learn about Py_DEBUG from pyconfig.h, but it is unclear if 
   the same works for the other two macros.  Py_DEBUG implies them, 
   but not the other way around. 
*/ 
#ifndef _CFFI_USE_EMBEDDING 
#  include <pyconfig.h> 
#  if !defined(Py_DEBUG) && !defined(Py_TRACE_REFS) && !defined(Py_REF_DEBUG) 
#    define Py_LIMITED_API 
#  endif 
#endif 
 
#include <Python.h> 
#ifdef __cplusplus 
extern "C" { 
#endif 
#include <stddef.h> 
 
/* This part is from file 'cffi/parse_c_type.h'.  It is copied at the 
   beginning of C sources generated by CFFI's ffi.set_source(). */ 
 
typedef void *_cffi_opcode_t; 
 
#define _CFFI_OP(opcode, arg)   (_cffi_opcode_t)(opcode | (((uintptr_t)(arg)) << 8)) 
#define _CFFI_GETOP(cffi_opcode)    ((unsigned char)(uintptr_t)cffi_opcode) 
#define _CFFI_GETARG(cffi_opcode)   (((intptr_t)cffi_opcode) >> 8) 
 
#define _CFFI_OP_PRIMITIVE       1 
#define _CFFI_OP_POINTER         3 
#define _CFFI_OP_ARRAY           5 
#define _CFFI_OP_OPEN_ARRAY      7 
#define _CFFI_OP_STRUCT_UNION    9 
#define _CFFI_OP_ENUM           11 
#define _CFFI_OP_FUNCTION       13 
#define _CFFI_OP_FUNCTION_END   15 
#define _CFFI_OP_NOOP           17 
#define _CFFI_OP_BITFIELD       19 
#define _CFFI_OP_TYPENAME       21 
#define _CFFI_OP_CPYTHON_BLTN_V 23   // varargs 
#define _CFFI_OP_CPYTHON_BLTN_N 25   // noargs 
#define _CFFI_OP_CPYTHON_BLTN_O 27   // O  (i.e. a single arg) 
#define _CFFI_OP_CONSTANT       29 
#define _CFFI_OP_CONSTANT_INT   31 
#define _CFFI_OP_GLOBAL_VAR     33 
#define _CFFI_OP_DLOPEN_FUNC    35 
#define _CFFI_OP_DLOPEN_CONST   37 
#define _CFFI_OP_GLOBAL_VAR_F   39 
#define _CFFI_OP_EXTERN_PYTHON  41 
 
#define _CFFI_PRIM_VOID          0 
#define _CFFI_PRIM_BOOL          1 
#define _CFFI_PRIM_CHAR          2 
#define _CFFI_PRIM_SCHAR         3 
#define _CFFI_PRIM_UCHAR         4 
#define _CFFI_PRIM_SHORT         5 
#define _CFFI_PRIM_USHORT        6 
#define _CFFI_PRIM_INT           7 
#define _CFFI_PRIM_UINT          8 
#define _CFFI_PRIM_LONG          9 
#define _CFFI_PRIM_ULONG        10 
#define _CFFI_PRIM_LONGLONG     11 
#define _CFFI_PRIM_ULONGLONG    12 
#define _CFFI_PRIM_FLOAT        13 
#define _CFFI_PRIM_DOUBLE       14 
#define _CFFI_PRIM_LONGDOUBLE   15 
 
#define _CFFI_PRIM_WCHAR        16 
#define _CFFI_PRIM_INT8         17 
#define _CFFI_PRIM_UINT8        18 
#define _CFFI_PRIM_INT16        19 
#define _CFFI_PRIM_UINT16       20 
#define _CFFI_PRIM_INT32        21 
#define _CFFI_PRIM_UINT32       22 
#define _CFFI_PRIM_INT64        23 
#define _CFFI_PRIM_UINT64       24 
#define _CFFI_PRIM_INTPTR       25 
#define _CFFI_PRIM_UINTPTR      26 
#define _CFFI_PRIM_PTRDIFF      27 
#define _CFFI_PRIM_SIZE         28 
#define _CFFI_PRIM_SSIZE        29 
#define _CFFI_PRIM_INT_LEAST8   30 
#define _CFFI_PRIM_UINT_LEAST8  31 
#define _CFFI_PRIM_INT_LEAST16  32 
#define _CFFI_PRIM_UINT_LEAST16 33 
#define _CFFI_PRIM_INT_LEAST32  34 
#define _CFFI_PRIM_UINT_LEAST32 35 
#define _CFFI_PRIM_INT_LEAST64  36 
#define _CFFI_PRIM_UINT_LEAST64 37 
#define _CFFI_PRIM_INT_FAST8    38 
#define _CFFI_PRIM_UINT_FAST8   39 
#define _CFFI_PRIM_INT_FAST16   40 
#define _CFFI_PRIM_UINT_FAST16  41 
#define _CFFI_PRIM_INT_FAST32   42 
#define _CFFI_PRIM_UINT_FAST32  43 
#define _CFFI_PRIM_INT_FAST64   44 
#define _CFFI_PRIM_UINT_FAST64  45 
#define _CFFI_PRIM_INTMAX       46 
#define _CFFI_PRIM_UINTMAX      47 
 
#define _CFFI__NUM_PRIM         48 
#define _CFFI__UNKNOWN_PRIM           (-1) 
#define _CFFI__UNKNOWN_FLOAT_PRIM     (-2) 
#define _CFFI__UNKNOWN_LONG_DOUBLE    (-3) 
 
#define _CFFI__IO_FILE_STRUCT         (-1) 
 
 
struct _cffi_global_s { 
    const char *name; 
    void *address; 
    _cffi_opcode_t type_op; 
    void *size_or_direct_fn;  // OP_GLOBAL_VAR: size, or 0 if unknown 
                              // OP_CPYTHON_BLTN_*: addr of direct function 
}; 
 
struct _cffi_getconst_s { 
    unsigned long long value; 
    const struct _cffi_type_context_s *ctx; 
    int gindex; 
}; 
 
struct _cffi_struct_union_s { 
    const char *name; 
    int type_index;          // -> _cffi_types, on a OP_STRUCT_UNION 
    int flags;               // _CFFI_F_* flags below 
    size_t size; 
    int alignment; 
    int first_field_index;   // -> _cffi_fields array 
    int num_fields; 
}; 
#define _CFFI_F_UNION         0x01   // is a union, not a struct 
#define _CFFI_F_CHECK_FIELDS  0x02   // complain if fields are not in the 
                                     // "standard layout" or if some are missing 
#define _CFFI_F_PACKED        0x04   // for CHECK_FIELDS, assume a packed struct 
#define _CFFI_F_EXTERNAL      0x08   // in some other ffi.include() 
#define _CFFI_F_OPAQUE        0x10   // opaque 
 
struct _cffi_field_s { 
    const char *name; 
    size_t field_offset; 
    size_t field_size; 
    _cffi_opcode_t field_type_op; 
}; 
 
struct _cffi_enum_s { 
    const char *name; 
    int type_index;          // -> _cffi_types, on a OP_ENUM 
    int type_prim;           // _CFFI_PRIM_xxx 
    const char *enumerators; // comma-delimited string 
}; 
 
struct _cffi_typename_s { 
    const char *name; 
    int type_index;   /* if opaque, points to a possibly artificial 
                         OP_STRUCT which is itself opaque */ 
}; 
 
struct _cffi_type_context_s { 
    _cffi_opcode_t *types; 
    const struct _cffi_global_s *globals; 
    const struct _cffi_field_s *fields; 
    const struct _cffi_struct_union_s *struct_unions; 
    const struct _cffi_enum_s *enums; 
    const struct _cffi_typename_s *typenames; 
    int num_globals; 
    int num_struct_unions; 
    int num_enums; 
    int num_typenames; 
    const char *const *includes; 
    int num_types; 
    int flags;      /* future extension */ 
}; 
 
struct _cffi_parse_info_s { 
    const struct _cffi_type_context_s *ctx; 
    _cffi_opcode_t *output; 
    unsigned int output_size; 
    size_t error_location; 
    const char *error_message; 
}; 
 
struct _cffi_externpy_s { 
    const char *name; 
    size_t size_of_result; 
    void *reserved1, *reserved2; 
}; 
 
#ifdef _CFFI_INTERNAL 
static int parse_c_type(struct _cffi_parse_info_s *info, const char *input); 
static int search_in_globals(const struct _cffi_type_context_s *ctx, 
                             const char *search, size_t search_len); 
static int search_in_struct_unions(const struct _cffi_type_context_s *ctx, 
                                   const char *search, size_t search_len); 
#endif 
 
/* this block of #ifs should be kept exactly identical between 
   c/_cffi_backend.c, cffi/vengine_cpy.py, cffi/vengine_gen.py 
   and cffi/_cffi_include.h */ 
#if defined(_MSC_VER) 
# include <malloc.h>   /* for alloca() */ 
# if _MSC_VER < 1600   /* MSVC < 2010 */ 
   typedef __int8 int8_t; 
   typedef __int16 int16_t; 
   typedef __int32 int32_t; 
   typedef __int64 int64_t; 
   typedef unsigned __int8 uint8_t; 
   typedef unsigned __int16 uint16_t; 
   typedef unsigned __int32 uint32_t; 
   typedef unsigned __int64 uint64_t; 
   typedef __int8 int_least8_t; 
   typedef __int16 int_least16_t; 
   typedef __int32 int_least32_t; 
   typedef __int64 int_least64_t; 
   typedef unsigned __int8 uint_least8_t; 
   typedef unsigned __int16 uint_least16_t; 
   typedef unsigned __int32 uint_least32_t; 
   typedef unsigned __int64 uint_least64_t; 
   typedef __int8 int_fast8_t; 
   typedef __int16 int_fast16_t; 
   typedef __int32 int_fast32_t; 
   typedef __int64 int_fast64_t; 
   typedef unsigned __int8 uint_fast8_t; 
   typedef unsigned __int16 uint_fast16_t; 
   typedef unsigned __int32 uint_fast32_t; 
   typedef unsigned __int64 uint_fast64_t; 
   typedef __int64 intmax_t; 
   typedef unsigned __int64 uintmax_t; 
# else 
#  include <stdint.h> 
# endif 
# if _MSC_VER < 1800   /* MSVC < 2013 */ 
#  ifndef __cplusplus 
    typedef unsigned char _Bool; 
#  endif 
# endif 
#else 
# include <stdint.h> 
# if (defined (__SVR4) && defined (__sun)) || defined(_AIX) || defined(__hpux) 
#  include <alloca.h> 
# endif 
#endif 
 
#ifdef __GNUC__ 
# define _CFFI_UNUSED_FN  __attribute__((unused)) 
#else 
# define _CFFI_UNUSED_FN  /* nothing */ 
#endif 
 
#ifdef __cplusplus 
# ifndef _Bool 
   typedef bool _Bool;   /* semi-hackish: C++ has no _Bool; bool is builtin */ 
# endif 
#endif 
 
/**********  CPython-specific section  **********/ 
#ifndef PYPY_VERSION 
 
 
#if PY_MAJOR_VERSION >= 3 
# define PyInt_FromLong PyLong_FromLong 
#endif 
 
#define _cffi_from_c_double PyFloat_FromDouble 
#define _cffi_from_c_float PyFloat_FromDouble 
#define _cffi_from_c_long PyInt_FromLong 
#define _cffi_from_c_ulong PyLong_FromUnsignedLong 
#define _cffi_from_c_longlong PyLong_FromLongLong 
#define _cffi_from_c_ulonglong PyLong_FromUnsignedLongLong 
 
#define _cffi_to_c_double PyFloat_AsDouble 
#define _cffi_to_c_float PyFloat_AsDouble 
 
#define _cffi_from_c_int(x, type)                                        \ 
    (((type)-1) > 0 ? /* unsigned */                                     \ 
        (sizeof(type) < sizeof(long) ?                                   \ 
            PyInt_FromLong((long)x) :                                    \ 
         sizeof(type) == sizeof(long) ?                                  \ 
            PyLong_FromUnsignedLong((unsigned long)x) :                  \ 
            PyLong_FromUnsignedLongLong((unsigned long long)x)) :        \ 
        (sizeof(type) <= sizeof(long) ?                                  \ 
            PyInt_FromLong((long)x) :                                    \ 
            PyLong_FromLongLong((long long)x))) 
 
#define _cffi_to_c_int(o, type)                                          \ 
    ((type)(                                                             \ 
     sizeof(type) == 1 ? (((type)-1) > 0 ? (type)_cffi_to_c_u8(o)        \ 
                                         : (type)_cffi_to_c_i8(o)) :     \ 
     sizeof(type) == 2 ? (((type)-1) > 0 ? (type)_cffi_to_c_u16(o)       \ 
                                         : (type)_cffi_to_c_i16(o)) :    \ 
     sizeof(type) == 4 ? (((type)-1) > 0 ? (type)_cffi_to_c_u32(o)       \ 
                                         : (type)_cffi_to_c_i32(o)) :    \ 
     sizeof(type) == 8 ? (((type)-1) > 0 ? (type)_cffi_to_c_u64(o)       \ 
                                         : (type)_cffi_to_c_i64(o)) :    \ 
     (Py_FatalError("unsupported size for type " #type), (type)0))) 
 
#define _cffi_to_c_i8                                                    \ 
                 ((int(*)(PyObject *))_cffi_exports[1]) 
#define _cffi_to_c_u8                                                    \ 
                 ((int(*)(PyObject *))_cffi_exports[2]) 
#define _cffi_to_c_i16                                                   \ 
                 ((int(*)(PyObject *))_cffi_exports[3]) 
#define _cffi_to_c_u16                                                   \ 
                 ((int(*)(PyObject *))_cffi_exports[4]) 
#define _cffi_to_c_i32                                                   \ 
                 ((int(*)(PyObject *))_cffi_exports[5]) 
#define _cffi_to_c_u32                                                   \ 
                 ((unsigned int(*)(PyObject *))_cffi_exports[6]) 
#define _cffi_to_c_i64                                                   \ 
                 ((long long(*)(PyObject *))_cffi_exports[7]) 
#define _cffi_to_c_u64                                                   \ 
                 ((unsigned long long(*)(PyObject *))_cffi_exports[8]) 
#define _cffi_to_c_char                                                  \ 
                 ((int(*)(PyObject *))_cffi_exports[9]) 
#define _cffi_from_c_pointer                                             \ 
    ((PyObject *(*)(char *, struct _cffi_ctypedescr *))_cffi_exports[10]) 
#define _cffi_to_c_pointer                                               \ 
    ((char *(*)(PyObject *, struct _cffi_ctypedescr *))_cffi_exports[11]) 
#define _cffi_get_struct_layout                                          \ 
    not used any more 
#define _cffi_restore_errno                                              \ 
    ((void(*)(void))_cffi_exports[13]) 
#define _cffi_save_errno                                                 \ 
    ((void(*)(void))_cffi_exports[14]) 
#define _cffi_from_c_char                                                \ 
    ((PyObject *(*)(char))_cffi_exports[15]) 
#define _cffi_from_c_deref                                               \ 
    ((PyObject *(*)(char *, struct _cffi_ctypedescr *))_cffi_exports[16]) 
#define _cffi_to_c                                                       \ 
    ((int(*)(char *, struct _cffi_ctypedescr *, PyObject *))_cffi_exports[17]) 
#define _cffi_from_c_struct                                              \ 
    ((PyObject *(*)(char *, struct _cffi_ctypedescr *))_cffi_exports[18]) 
#define _cffi_to_c_wchar_t                                               \ 
    ((wchar_t(*)(PyObject *))_cffi_exports[19]) 
#define _cffi_from_c_wchar_t                                             \ 
    ((PyObject *(*)(wchar_t))_cffi_exports[20]) 
#define _cffi_to_c_long_double                                           \ 
    ((long double(*)(PyObject *))_cffi_exports[21]) 
#define _cffi_to_c__Bool                                                 \ 
    ((_Bool(*)(PyObject *))_cffi_exports[22]) 
#define _cffi_prepare_pointer_call_argument                              \ 
    ((Py_ssize_t(*)(struct _cffi_ctypedescr *,                           \ 
                    PyObject *, char **))_cffi_exports[23]) 
#define _cffi_convert_array_from_object                                  \ 
    ((int(*)(char *, struct _cffi_ctypedescr *, PyObject *))_cffi_exports[24]) 
#define _CFFI_CPIDX  25 
#define _cffi_call_python                                                \ 
    ((void(*)(struct _cffi_externpy_s *, char *))_cffi_exports[_CFFI_CPIDX]) 
#define _CFFI_NUM_EXPORTS 26 
 
struct _cffi_ctypedescr; 
 
static void *_cffi_exports[_CFFI_NUM_EXPORTS]; 
 
#define _cffi_type(index)   (                           \ 
    assert((((uintptr_t)_cffi_types[index]) & 1) == 0), \ 
    (struct _cffi_ctypedescr *)_cffi_types[index]) 
 
static PyObject *_cffi_init(const char *module_name, Py_ssize_t version, 
                            const struct _cffi_type_context_s *ctx) 
{ 
    PyObject *module, *o_arg, *new_module; 
    void *raw[] = { 
        (void *)module_name, 
        (void *)version, 
        (void *)_cffi_exports, 
        (void *)ctx, 
    }; 
 
    module = PyImport_ImportModule("_cffi_backend"); 
    if (module == NULL) 
        goto failure; 
 
    o_arg = PyLong_FromVoidPtr((void *)raw); 
    if (o_arg == NULL) 
        goto failure; 
 
    new_module = PyObject_CallMethod( 
        module, (char *)"_init_cffi_1_0_external_module", (char *)"O", o_arg); 
 
    Py_DECREF(o_arg); 
    Py_DECREF(module); 
    return new_module; 
 
  failure: 
    Py_XDECREF(module); 
    return NULL; 
} 
 
/**********  end CPython-specific section  **********/ 
#else 
_CFFI_UNUSED_FN 
static void (*_cffi_call_python_org)(struct _cffi_externpy_s *, char *); 
# define _cffi_call_python  _cffi_call_python_org 
#endif 
 
 
#define _cffi_array_len(array)   (sizeof(array) / sizeof((array)[0])) 
 
#define _cffi_prim_int(size, sign)                                      \ 
    ((size) == 1 ? ((sign) ? _CFFI_PRIM_INT8  : _CFFI_PRIM_UINT8)  :    \ 
     (size) == 2 ? ((sign) ? _CFFI_PRIM_INT16 : _CFFI_PRIM_UINT16) :    \ 
     (size) == 4 ? ((sign) ? _CFFI_PRIM_INT32 : _CFFI_PRIM_UINT32) :    \ 
     (size) == 8 ? ((sign) ? _CFFI_PRIM_INT64 : _CFFI_PRIM_UINT64) :    \ 
     _CFFI__UNKNOWN_PRIM) 
 
#define _cffi_prim_float(size)                                          \ 
    ((size) == sizeof(float) ? _CFFI_PRIM_FLOAT :                       \ 
     (size) == sizeof(double) ? _CFFI_PRIM_DOUBLE :                     \ 
     (size) == sizeof(long double) ? _CFFI__UNKNOWN_LONG_DOUBLE :       \ 
     _CFFI__UNKNOWN_FLOAT_PRIM) 
 
#define _cffi_check_int(got, got_nonpos, expected)      \ 
    ((got_nonpos) == (expected <= 0) &&                 \ 
     (got) == (unsigned long long)expected) 
 
#ifdef MS_WIN32 
# define _cffi_stdcall  __stdcall 
#else 
# define _cffi_stdcall  /* nothing */ 
#endif 
 
#ifdef __cplusplus 
} 
#endif 
 
/************************************************************/ 
 
// This file is dual licensed under the terms of the Apache License, Version 
// 2.0, and the BSD License. See the LICENSE file in the root of this 
// repository for complete details. 
 
/* Returns the value of the input with the most-significant-bit copied to all 
   of the bits. */ 
static uint16_t Cryptography_DUPLICATE_MSB_TO_ALL(uint16_t a) { 
    return (1 - (a >> (sizeof(uint16_t) * 8 - 1))) - 1; 
} 
 
/* This returns 0xFFFF if a < b else 0x0000, but does so in a constant time 
   fashion */ 
static uint16_t Cryptography_constant_time_lt(uint16_t a, uint16_t b) { 
    a -= b; 
    return Cryptography_DUPLICATE_MSB_TO_ALL(a); 
} 
 
uint8_t Cryptography_check_pkcs7_padding(const uint8_t *data, 
                                         uint16_t block_len) { 
    uint16_t i; 
    uint16_t pad_size = data[block_len - 1]; 
    uint16_t mismatch = 0; 
    for (i = 0; i < block_len; i++) { 
        unsigned int mask = Cryptography_constant_time_lt(i, pad_size); 
        uint16_t b = data[block_len - 1 - i]; 
        mismatch |= (mask & (pad_size ^ b)); 
    } 
 
    /* Check to make sure the pad_size was within the valid range. */ 
    mismatch |= ~Cryptography_constant_time_lt(0, pad_size); 
    mismatch |= Cryptography_constant_time_lt(block_len, pad_size); 
 
    /* Make sure any bits set are copied to the lowest bit */ 
    mismatch |= mismatch >> 8; 
    mismatch |= mismatch >> 4; 
    mismatch |= mismatch >> 2; 
    mismatch |= mismatch >> 1; 
    /* Now check the low bit to see if it's set */ 
    return (mismatch & 1) == 0; 
} 
 
uint8_t Cryptography_check_ansix923_padding(const uint8_t *data, 
                                            uint16_t block_len) { 
    uint16_t i; 
    uint16_t pad_size = data[block_len - 1]; 
    uint16_t mismatch = 0; 
    /* Skip the first one with the pad size */ 
    for (i = 1; i < block_len; i++) { 
        unsigned int mask = Cryptography_constant_time_lt(i, pad_size); 
        uint16_t b = data[block_len - 1 - i]; 
        mismatch |= (mask & b); 
    } 
 
    /* Check to make sure the pad_size was within the valid range. */ 
    mismatch |= ~Cryptography_constant_time_lt(0, pad_size); 
    mismatch |= Cryptography_constant_time_lt(block_len, pad_size); 
 
    /* Make sure any bits set are copied to the lowest bit */ 
    mismatch |= mismatch >> 8; 
    mismatch |= mismatch >> 4; 
    mismatch |= mismatch >> 2; 
    mismatch |= mismatch >> 1; 
    /* Now check the low bit to see if it's set */ 
    return (mismatch & 1) == 0; 
} 
 
#define CRYPTOGRAPHY_PACKAGE_VERSION "3.3.2"
 
/************************************************************/ 
 
static void *_cffi_types[] = { 
/*  0 */ _CFFI_OP(_CFFI_OP_FUNCTION, 2), // uint8_t()(uint8_t const *, uint8_t) 
/*  1 */ _CFFI_OP(_CFFI_OP_POINTER, 2), // uint8_t const * 
/*  2 */ _CFFI_OP(_CFFI_OP_PRIMITIVE, 18), // uint8_t 
/*  3 */ _CFFI_OP(_CFFI_OP_FUNCTION_END, 0), 
/*  4 */ _CFFI_OP(_CFFI_OP_POINTER, 5), // char const *
/*  5 */ _CFFI_OP(_CFFI_OP_PRIMITIVE, 2), // char
}; 
 
static void _cffi_const_CRYPTOGRAPHY_PACKAGE_VERSION(char *o)
{
  *(char const * *)o = CRYPTOGRAPHY_PACKAGE_VERSION;
}

static uint8_t _cffi_d_Cryptography_check_ansix923_padding(uint8_t const * x0, uint8_t x1) 
{ 
  return Cryptography_check_ansix923_padding(x0, x1); 
} 
#ifndef PYPY_VERSION 
static PyObject * 
_cffi_f_Cryptography_check_ansix923_padding(PyObject *self, PyObject *args) 
{ 
  uint8_t const * x0; 
  uint8_t x1; 
  Py_ssize_t datasize; 
  uint8_t result; 
  PyObject *arg0; 
  PyObject *arg1; 
 
  if (!PyArg_UnpackTuple(args, "Cryptography_check_ansix923_padding", 2, 2, &arg0, &arg1)) 
    return NULL; 
 
  datasize = _cffi_prepare_pointer_call_argument( 
      _cffi_type(1), arg0, (char **)&x0); 
  if (datasize != 0) { 
    if (datasize < 0) 
      return NULL; 
    x0 = (uint8_t const *)alloca((size_t)datasize); 
    memset((void *)x0, 0, (size_t)datasize); 
    if (_cffi_convert_array_from_object((char *)x0, _cffi_type(1), arg0) < 0) 
      return NULL; 
  } 
 
  x1 = _cffi_to_c_int(arg1, uint8_t); 
  if (x1 == (uint8_t)-1 && PyErr_Occurred()) 
    return NULL; 
 
  Py_BEGIN_ALLOW_THREADS 
  _cffi_restore_errno(); 
  { result = Cryptography_check_ansix923_padding(x0, x1); } 
  _cffi_save_errno(); 
  Py_END_ALLOW_THREADS 
 
  (void)self; /* unused */ 
  return _cffi_from_c_int(result, uint8_t); 
} 
#else 
#  define _cffi_f_Cryptography_check_ansix923_padding _cffi_d_Cryptography_check_ansix923_padding 
#endif 
 
static uint8_t _cffi_d_Cryptography_check_pkcs7_padding(uint8_t const * x0, uint8_t x1) 
{ 
  return Cryptography_check_pkcs7_padding(x0, x1); 
} 
#ifndef PYPY_VERSION 
static PyObject * 
_cffi_f_Cryptography_check_pkcs7_padding(PyObject *self, PyObject *args) 
{ 
  uint8_t const * x0; 
  uint8_t x1; 
  Py_ssize_t datasize; 
  uint8_t result; 
  PyObject *arg0; 
  PyObject *arg1; 
 
  if (!PyArg_UnpackTuple(args, "Cryptography_check_pkcs7_padding", 2, 2, &arg0, &arg1)) 
    return NULL; 
 
  datasize = _cffi_prepare_pointer_call_argument( 
      _cffi_type(1), arg0, (char **)&x0); 
  if (datasize != 0) { 
    if (datasize < 0) 
      return NULL; 
    x0 = (uint8_t const *)alloca((size_t)datasize); 
    memset((void *)x0, 0, (size_t)datasize); 
    if (_cffi_convert_array_from_object((char *)x0, _cffi_type(1), arg0) < 0) 
      return NULL; 
  } 
 
  x1 = _cffi_to_c_int(arg1, uint8_t); 
  if (x1 == (uint8_t)-1 && PyErr_Occurred()) 
    return NULL; 
 
  Py_BEGIN_ALLOW_THREADS 
  _cffi_restore_errno(); 
  { result = Cryptography_check_pkcs7_padding(x0, x1); } 
  _cffi_save_errno(); 
  Py_END_ALLOW_THREADS 
 
  (void)self; /* unused */ 
  return _cffi_from_c_int(result, uint8_t); 
} 
#else 
#  define _cffi_f_Cryptography_check_pkcs7_padding _cffi_d_Cryptography_check_pkcs7_padding 
#endif 
 
static const struct _cffi_global_s _cffi_globals[] = { 
  { "CRYPTOGRAPHY_PACKAGE_VERSION", (void *)_cffi_const_CRYPTOGRAPHY_PACKAGE_VERSION, _CFFI_OP(_CFFI_OP_CONSTANT, 4), (void *)0 },
  { "Cryptography_check_ansix923_padding", (void *)_cffi_f_Cryptography_check_ansix923_padding, _CFFI_OP(_CFFI_OP_CPYTHON_BLTN_V, 0), (void *)_cffi_d_Cryptography_check_ansix923_padding }, 
  { "Cryptography_check_pkcs7_padding", (void *)_cffi_f_Cryptography_check_pkcs7_padding, _CFFI_OP(_CFFI_OP_CPYTHON_BLTN_V, 0), (void *)_cffi_d_Cryptography_check_pkcs7_padding }, 
}; 
 
static const struct _cffi_type_context_s _cffi_type_context = { 
  _cffi_types, 
  _cffi_globals, 
  NULL,  /* no fields */ 
  NULL,  /* no struct_unions */ 
  NULL,  /* no enums */ 
  NULL,  /* no typenames */ 
  3,  /* num_globals */
  0,  /* num_struct_unions */ 
  0,  /* num_enums */ 
  0,  /* num_typenames */ 
  NULL,  /* no includes */ 
  6,  /* num_types */
  0,  /* flags */ 
}; 
 
#ifdef PYPY_VERSION 
PyMODINIT_FUNC 
_cffi_pypyinit__padding(const void *p[]) 
{ 
    p[0] = (const void *)0x2601; 
    p[1] = &_cffi_type_context; 
} 
#  ifdef _MSC_VER 
     PyMODINIT_FUNC 
#  if PY_MAJOR_VERSION >= 3 
     PyInit__padding(void) { return NULL; } 
#  else 
     init_padding(void) { } 
#  endif 
#  endif 
#elif PY_MAJOR_VERSION >= 3 
PyMODINIT_FUNC 
PyInit__padding(void) 
{ 
  return _cffi_init("_padding", 0x2601, &_cffi_type_context); 
} 
#else 
PyMODINIT_FUNC 
init_padding(void) 
{ 
  _cffi_init("_padding", 0x2601, &_cffi_type_context);
} 
#endif