1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
|
/* Socket module header file */
/* Includes needed for the sockaddr_* symbols below */
#ifndef MS_WINDOWS
# include <sys/socket.h>
# include <netinet/in.h>
# if !(defined(__BEOS__) || defined(__CYGWIN__) || (defined(PYOS_OS2) && defined(PYCC_VACPP)))
# include <netinet/tcp.h>
# endif
#else /* MS_WINDOWS */
# include <winsock.h>
#endif
#ifdef HAVE_SYS_UN_H
# include <sys/un.h>
#else
# undef AF_UNIX
#endif
#ifdef HAVE_NETPACKET_PACKET_H
# include <sys/ioctl.h>
# include <net/if.h>
# include <netpacket/packet.h>
#endif
#ifndef Py__SOCKET_H
#define Py__SOCKET_H
#ifdef __cplusplus
extern "C" {
#endif
/* Python module and C API name */
#define PySocket_MODULE_NAME "_socket"
#define PySocket_CAPI_NAME "CAPI"
/* Abstract the socket file descriptor type */
#ifdef MS_WINDOWS
typedef SOCKET SOCKET_T;
# ifdef MS_WIN64
# define SIZEOF_SOCKET_T 8
# else
# define SIZEOF_SOCKET_T 4
# endif
#else
typedef int SOCKET_T;
# define SIZEOF_SOCKET_T SIZEOF_INT
#endif
/* The object holding a socket. It holds some extra information,
like the address family, which is used to decode socket address
arguments properly. */
typedef struct {
PyObject_HEAD
SOCKET_T sock_fd; /* Socket file descriptor */
int sock_family; /* Address family, e.g., AF_INET */
int sock_type; /* Socket type, e.g., SOCK_STREAM */
int sock_proto; /* Protocol type, usually 0 */
union sock_addr {
struct sockaddr_in in;
#ifdef AF_UNIX
struct sockaddr_un un;
#endif
#ifdef ENABLE_IPV6
struct sockaddr_in6 in6;
struct sockaddr_storage storage;
#endif
#ifdef HAVE_NETPACKET_PACKET_H
struct sockaddr_ll ll;
#endif
} sock_addr;
PyObject *(*errorhandler)(void); /* Error handler; checks
errno, returns NULL and
sets a Python exception */
} PySocketSockObject;
/* A forward reference to the Socktype type object.
The Socktype variable contains pointers to various functions,
some of which call newsockobject(), which uses Socktype, so
there has to be a circular reference. */
extern DL_IMPORT(PyTypeObject) PySocketSock_Type;
/* --- C API ----------------------------------------------------*/
/* C API for usage by other Python modules */
typedef struct {
PyTypeObject *Sock_Type;
} PySocketModule_APIObject;
#ifndef PySocket_BUILDING_SOCKET
/* --- C API ----------------------------------------------------*/
/* Interfacestructure to C API for other modules.
Call PySocket_ImportModuleAPI() to initialize this
structure. After that usage is simple:
if (!PyArg_ParseTuple(args, "O!|zz:ssl",
&PySocketModule.Sock_Type, (PyObject*)&Sock,
&key_file, &cert_file))
return NULL;
...
*/
static
PySocketModule_APIObject PySocketModule;
/* You *must* call this before using any of the functions in
PySocketModule and check its outcome; otherwise all accesses will
result in a segfault. Returns 0 on success. */
#ifndef DPRINTF
# define DPRINTF if (0) printf
#endif
static
int PySocketModule_ImportModuleAndAPI(void)
{
PyObject *mod = 0, *v = 0;
char *apimodule = PySocket_MODULE_NAME;
char *apiname = PySocket_CAPI_NAME;
void *api;
DPRINTF("Importing the %s C API...\n",apimodule);
mod = PyImport_ImportModule(apimodule);
if (mod == NULL)
goto onError;
DPRINTF(" %s package found\n",apimodule);
v = PyObject_GetAttrString(mod,apiname);
if (v == NULL)
goto onError;
Py_DECREF(mod);
DPRINTF(" API object %s found\n",apiname);
api = PyCObject_AsVoidPtr(v);
if (api == NULL)
goto onError;
Py_DECREF(v);
memcpy(&PySocketModule, api, sizeof(PySocketModule));
DPRINTF(" API object loaded and initialized.\n");
return 0;
onError:
DPRINTF(" not found.\n");
Py_XDECREF(mod);
Py_XDECREF(v);
return -1;
}
#endif
#ifdef __cplusplus
}
#endif
#endif /* !Py__SOCKET_H */
|
