lib/tevent/pytevent.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    Copyright (C) Jelmer Vernooij <jelmer@samba.org> 2007-2008
   4
   5      ** NOTE! The following LGPL license applies to the tevent
   6      ** library. This does NOT imply that all of Samba is released
   7      ** under the LGPL
   8
   9    This library is free software; you can redistribute it and/or
  10    modify it under the terms of the GNU Lesser General Public
  11    License as published by the Free Software Foundation; either
  12    version 3 of the License, or (at your option) any later version.
  13
  14    This library is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17    Lesser General Public License for more details.
  18
  19    You should have received a copy of the GNU Lesser General Public
  20    License along with this library; if not, see <http://www.gnu.org/licenses/>.
  21 */
  22
  23 #include "replace.h"
  24 #include <Python.h>
  25
  26 #ifndef Py_RETURN_NONE
  27 #define Py_RETURN_NONE return Py_INCREF(Py_None), Py_None
  28 #endif
  29
  30 #include <tevent.h>
  31 #include <stdbool.h>
  32 #include "tevent_util.h"
  33
  34 typedef struct {
  35         PyObject_HEAD
  36         struct tevent_context *ev_ctx;
  37 } PyTEventContextObject;
  38
  39 PyAPI_DATA(PyTypeObject) PyTEventContext;
  40
  41 static PyObject *py_set_default_backend(PyObject *self, PyObject *args)
  42 {
  43     char *name;
  44
  45     if (!PyArg_ParseTuple(args, "s", &name))
  46         return NULL;
  47     tevent_set_default_backend(name);
  48     Py_RETURN_NONE;
  49 }
  50
  51 static PyObject *py_backend_list(PyObject *self)
  52 {
  53     const char **backends = tevent_backend_list(NULL);
  54     PyObject *ret;
  55     int i, len;
  56
  57     len = ev_str_list_length(backends);
  58     ret = PyList_New(len);
  59     for (i = 0; i < len; i++)
  60         PyList_SetItem(ret, i, PyString_FromString(backends[i]));
  61     talloc_free(backends);
  62
  63     return ret;
  64 }
  65
  66 static PyMethodDef tevent_methods[] = {
  67     { "set_default_backend", (PyCFunction)py_set_default_backend,
  68         METH_VARARGS, "set_default_backend(name) -> None" },
  69     { "backend_list", (PyCFunction)py_backend_list,
  70         METH_NOARGS, "backend_list() -> list" },
  71     { NULL },
  72 };
  73
  74 static PyObject *py_event_ctx_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
  75 {
  76     const char *kwnames[] = { "name", NULL };
  77     char *name = NULL;
  78     struct tevent_context *ev_ctx;
  79     PyTEventContextObject *ret;
  80     if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|s",
  81                                      discard_const_p(char *, kwnames),
  82                                      &name))
  83         return NULL;
  84
  85     if (name == NULL)
  86         ev_ctx = tevent_context_init(NULL);
  87     else
  88         ev_ctx = tevent_context_init_byname(NULL, name);
  89
  90     ret = (PyTEventContextObject *)type->tp_alloc(type, 0);
  91     ret->ev_ctx = ev_ctx;
  92     return (PyObject *)ret;
  93 }
  94
  95 static PyObject *py_event_ctx_loop_once(PyTEventContextObject *self)
  96 {
  97     return PyInt_FromLong(tevent_loop_once(self->ev_ctx));
  98 }
  99
 100 static PyObject *py_event_ctx_loop_wait(PyTEventContextObject *self)
 101 {
 102     return PyInt_FromLong(tevent_loop_wait(self->ev_ctx));
 103 }
 104
 105 static PyMethodDef py_event_ctx_methods[] = {
 106     { "loop_once", (PyCFunction)py_event_ctx_loop_once, METH_NOARGS,
 107         "S.loop_once() -> int" },
 108     { "loop_wait", (PyCFunction)py_event_ctx_loop_wait, METH_NOARGS,
 109         "S.loop_wait() -> int" },
 110     { NULL }
 111 };
 112
 113 static void py_event_ctx_dealloc(PyTEventContextObject * self)
 114 {
 115         talloc_free(self->ev_ctx);
 116         self->ob_type->tp_free(self);
 117 }
 118
 119
 120 PyTypeObject PyTEventContext = {
 121     .tp_name = "TEventContext",
 122     .tp_methods = py_event_ctx_methods,
 123     .tp_basicsize = sizeof(PyTEventContextObject),
 124     .tp_dealloc = (destructor)py_event_ctx_dealloc,
 125     .tp_flags = Py_TPFLAGS_DEFAULT,
 126     .tp_new = py_event_ctx_new,
 127 };
 128
 129 void inittevent(void)
 130 {
 131     PyObject *m;
 132
 133     if (PyType_Ready(&PyTEventContext) < 0)
 134         return;
 135
 136     m = Py_InitModule3("tevent", tevent_methods, "Event management.");
 137     if (m == NULL)
 138         return;
 139
 140     Py_INCREF(&PyTEventContext);
 141     PyModule_AddObject(m, "TEventContext", (PyObject *)&PyTEventContext);
 142 }
 143