Staging
v0.8.1
v0.8.1
https://github.com/python/cpython
Tip revision: 2bd31b5fde32194a63ca1e782e2578c6bd2ba759 authored by Ćukasz Langa on 16 September 2020, 21:23:13 UTC
Python 3.9.0rc2
Python 3.9.0rc2
Tip revision: 2bd31b5
_uuidmodule.c
/*
* Python UUID module that wraps libuuid or Windows rpcrt4.dll.
* DCE compatible Universally Unique Identifier library.
*/
#define PY_SSIZE_T_CLEAN
#include "Python.h"
#ifdef HAVE_UUID_UUID_H
#include <uuid/uuid.h>
#elif defined(HAVE_UUID_H)
#include <uuid.h>
#endif
#ifdef MS_WINDOWS
#include <rpc.h>
#endif
#ifndef MS_WINDOWS
static PyObject *
py_uuid_generate_time_safe(PyObject *Py_UNUSED(context),
PyObject *Py_UNUSED(ignored))
{
uuid_t uuid;
#ifdef HAVE_UUID_GENERATE_TIME_SAFE
int res;
res = uuid_generate_time_safe(uuid);
return Py_BuildValue("y#i", (const char *) uuid, sizeof(uuid), res);
#elif defined(HAVE_UUID_CREATE)
uint32_t status;
uuid_create(&uuid, &status);
# if defined(HAVE_UUID_ENC_BE)
unsigned char buf[sizeof(uuid)];
uuid_enc_be(buf, &uuid);
return Py_BuildValue("y#i", buf, sizeof(uuid), (int) status);
# else
return Py_BuildValue("y#i", (const char *) &uuid, sizeof(uuid), (int) status);
# endif /* HAVE_UUID_CREATE */
#else /* HAVE_UUID_GENERATE_TIME_SAFE */
uuid_generate_time(uuid);
return Py_BuildValue("y#O", (const char *) uuid, sizeof(uuid), Py_None);
#endif /* HAVE_UUID_GENERATE_TIME_SAFE */
}
#else /* MS_WINDOWS */
static PyObject *
py_UuidCreate(PyObject *Py_UNUSED(context),
PyObject *Py_UNUSED(ignored))
{
UUID uuid;
RPC_STATUS res;
Py_BEGIN_ALLOW_THREADS
res = UuidCreateSequential(&uuid);
Py_END_ALLOW_THREADS
switch (res) {
case RPC_S_OK:
case RPC_S_UUID_LOCAL_ONLY:
case RPC_S_UUID_NO_ADDRESS:
/*
All success codes, but the latter two indicate that the UUID is random
rather than based on the MAC address. If the OS can't figure this out,
neither can we, so we'll take it anyway.
*/
return Py_BuildValue("y#", (const char *)&uuid, sizeof(uuid));
}
PyErr_SetFromWindowsErr(res);
return NULL;
}
#endif /* MS_WINDOWS */
static int
uuid_exec(PyObject *module) {
assert(sizeof(uuid_t) == 16);
#if defined(MS_WINDOWS)
int has_uuid_generate_time_safe = 0;
#elif defined(HAVE_UUID_GENERATE_TIME_SAFE)
int has_uuid_generate_time_safe = 1;
#else
int has_uuid_generate_time_safe = 0;
#endif
if (PyModule_AddIntConstant(module, "has_uuid_generate_time_safe",
has_uuid_generate_time_safe) < 0) {
return -1;
}
return 0;
}
static PyMethodDef uuid_methods[] = {
#if defined(HAVE_UUID_UUID_H) || defined(HAVE_UUID_H)
{"generate_time_safe", py_uuid_generate_time_safe, METH_NOARGS, NULL},
#endif
#if defined(MS_WINDOWS)
{"UuidCreate", py_UuidCreate, METH_NOARGS, NULL},
#endif
{NULL, NULL, 0, NULL} /* sentinel */
};
static PyModuleDef_Slot uuid_slots[] = {
{Py_mod_exec, uuid_exec},
{0, NULL}
};
static struct PyModuleDef uuidmodule = {
PyModuleDef_HEAD_INIT,
.m_name = "_uuid",
.m_size = 0,
.m_methods = uuid_methods,
.m_slots = uuid_slots,
};
PyMODINIT_FUNC
PyInit__uuid(void)
{
return PyModuleDef_Init(&uuidmodule);
}