+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+ This file is part of systemd.
+
+ Copyright 2013 Zbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl>
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <Python.h>
+
+#include <systemd/sd-messages.h>
+
+#define _cleanup_Py_DECREF_ __attribute__((cleanup(cleanup_Py_DECREFp)))
+
+static void cleanup_Py_DECREFp(PyObject **p) {
+ if (!*p)
+ return;
+
+ Py_DECREF(*p);
+}
+
+PyDoc_STRVAR(module__doc__,
+ "Python interface to the libsystemd-id128 library.\n\n"
+ "Provides SD_MESSAGE_* constants and functions to query and generate\n"
+ "128bit unique identifiers."
+);
+
+PyDoc_STRVAR(randomize__doc__,
+ "randomize() -> UUID\n\n"
+ "Return a new random 128bit unique identifier.\n"
+ "Wraps sd_id128_randomize(3)."
+);
+
+PyDoc_STRVAR(get_machine__doc__,
+ "get_machine() -> UUID\n\n"
+ "Return a 128bit unique identifier for this machine.\n"
+ "Wraps sd_id128_get_machine(3)."
+);
+
+PyDoc_STRVAR(get_boot__doc__,
+ "get_boot() -> UUID\n\n"
+ "Return a 128bit unique identifier for this boot.\n"
+ "Wraps sd_id128_get_boot(3)."
+);
+
+static PyObject* make_uuid(sd_id128_t id) {
+ PyObject _cleanup_Py_DECREF_
+ *uuid = NULL, *UUID = NULL, *bytes = NULL,
+ *args = NULL, *kwargs = NULL, *obj = NULL;
+
+ uuid = PyImport_ImportModule("uuid");
+ if (!uuid)
+ return NULL;
+
+ UUID = PyObject_GetAttrString(uuid, "UUID");
+ bytes = PyBytes_FromStringAndSize((const char*) &id.bytes, sizeof(id.bytes));
+ args = Py_BuildValue("()");
+ kwargs = PyDict_New();
+ if (!UUID || !bytes || !args || !kwargs)
+ return NULL;
+
+ if (PyDict_SetItemString(kwargs, "bytes", bytes) < 0)
+ return NULL;
+
+ return PyObject_Call(UUID, args, kwargs);
+}
+
+#define helper(name) \
+ static PyObject *name(PyObject *self, PyObject *args) { \
+ sd_id128_t id; \
+ int r; \
+ \
+ assert(args == NULL); \
+ \
+ r = sd_id128_##name(&id); \
+ if (r < 0) { \
+ errno = -r; \
+ return PyErr_SetFromErrno(PyExc_IOError); \
+ } \
+ \
+ return make_uuid(id); \
+ }
+
+helper(randomize)
+helper(get_machine)
+helper(get_boot)
+
+static PyMethodDef methods[] = {
+ { "randomize", randomize, METH_NOARGS, randomize__doc__},
+ { "get_machine", get_machine, METH_NOARGS, get_machine__doc__},
+ { "get_boot", get_boot, METH_NOARGS, get_boot__doc__},
+ { NULL, NULL, 0, NULL } /* Sentinel */
+};
+
+static int add_id(PyObject *module, const char* name, sd_id128_t id) {
+ PyObject _cleanup_Py_DECREF_ *obj;
+
+ obj = make_uuid(id);
+ if (!obj)
+ return -1;
+
+ return PyObject_SetAttrString(module, name, obj);
+}
+
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wmissing-prototypes"
+
+#if PY_MAJOR_VERSION < 3
+
+PyMODINIT_FUNC initid128(void) {
+ PyObject *m;
+
+ m = Py_InitModule3("id128", methods, module__doc__);
+ if (m == NULL)
+ return;
+
+#include "id128-constants.h"
+}
+
+#else
+
+static struct PyModuleDef module = {
+ PyModuleDef_HEAD_INIT,
+ "id128", /* name of module */
+ module__doc__, /* module documentation, may be NULL */
+ 0, /* size of per-interpreter state of the module */
+ methods
+};
+
+PyMODINIT_FUNC PyInit_id128(void) {
+ PyObject *m;
+
+ m = PyModule_Create(&module);
+ if (m == NULL)
+ return NULL;
+
+#include "id128-constants.h"
+
+ return m;
+}
+
+#endif
+
+#pragma GCC diagnostic pop
~ianmdlvl / elogind.git / commitdiff