This repository was archived by the owner on Feb 27, 2025. It is now read-only.
forked from gvalkov/python-evdev
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathuinput.c
More file actions
280 lines (217 loc) · 6.27 KB
/
Copy pathuinput.c
File metadata and controls
280 lines (217 loc) · 6.27 KB
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
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
#include <Python.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#ifdef __FreeBSD__
#include <dev/evdev/input.h>
#include <dev/evdev/uinput.h>
#else
#include <linux/input.h>
#include <linux/uinput.h>
#endif
int _uinput_close(int fd)
{
if (ioctl(fd, UI_DEV_DESTROY) < 0) {
int oerrno = errno;
close(fd);
errno = oerrno;
return -1;
}
return close(fd);
}
static PyObject *
uinput_open(PyObject *self, PyObject *args)
{
const char* devnode;
int ret = PyArg_ParseTuple(args, "s", &devnode);
if (!ret) return NULL;
int fd = open(devnode, O_RDWR | O_NONBLOCK);
if (fd < 0) {
PyErr_SetString(PyExc_IOError, "could not open uinput device in write mode");
return NULL;
}
return Py_BuildValue("i", fd);
}
static PyObject *
uinput_set_phys(PyObject *self, PyObject *args)
{
int fd;
const char* phys;
int ret = PyArg_ParseTuple(args, "is", &fd, &phys);
if (!ret) return NULL;
if (ioctl(fd, UI_SET_PHYS, phys) < 0)
goto on_err;
Py_RETURN_NONE;
on_err:
_uinput_close(fd);
PyErr_SetFromErrno(PyExc_IOError);
return NULL;
}
static PyObject *
uinput_create(PyObject *self, PyObject *args) {
int fd, len, i, abscode;
uint16_t vendor, product, version, bustype;
PyObject *absinfo = NULL, *item = NULL;
struct uinput_user_dev uidev;
const char* name;
int ret = PyArg_ParseTuple(args, "ishhhhO", &fd, &name, &vendor,
&product, &version, &bustype, &absinfo);
if (!ret) return NULL;
memset(&uidev, 0, sizeof(uidev));
strncpy(uidev.name, name, UINPUT_MAX_NAME_SIZE);
uidev.id.vendor = vendor;
uidev.id.product = product;
uidev.id.version = version;
uidev.id.bustype = bustype;
len = PyList_Size(absinfo);
for (i=0; i<len; i++) {
// item -> (ABS_X, 0, 255, 0, 0, 0, 0)
item = PyList_GetItem(absinfo, i);
abscode = (int)PyLong_AsLong(PyList_GetItem(item, 0));
/* min/max/fuzz/flat start from index 2 because index 1 is value */
uidev.absmin[abscode] = PyLong_AsLong(PyList_GetItem(item, 2));
uidev.absmax[abscode] = PyLong_AsLong(PyList_GetItem(item, 3));
uidev.absfuzz[abscode] = PyLong_AsLong(PyList_GetItem(item, 4));
uidev.absflat[abscode] = PyLong_AsLong(PyList_GetItem(item, 5));
}
if (write(fd, &uidev, sizeof(uidev)) != sizeof(uidev))
goto on_err;
/* if (ioctl(fd, UI_SET_EVBIT, EV_KEY) < 0) */
/* goto on_err; */
/* int i; */
/* for (i=0; i<KEY_MAX && fd; i++) { */
/* if (ioctl(fd, UI_SET_KEYBIT, i) < 0) */
/* goto on_err; */
/* } */
if (ioctl(fd, UI_DEV_CREATE) < 0)
goto on_err;
Py_RETURN_NONE;
on_err:
_uinput_close(fd);
PyErr_SetFromErrno(PyExc_IOError);
return NULL;
}
static PyObject *
uinput_close(PyObject *self, PyObject *args)
{
int fd;
int ret = PyArg_ParseTuple(args, "i", &fd);
if (!ret) return NULL;
if (_uinput_close(fd) < 0) {
PyErr_SetFromErrno(PyExc_IOError);
return NULL;
}
Py_RETURN_NONE;
}
static PyObject *
uinput_write(PyObject *self, PyObject *args)
{
int fd, type, code, value;
int ret = PyArg_ParseTuple(args, "iiii", &fd, &type, &code, &value);
if (!ret) return NULL;
struct input_event event;
memset(&event, 0, sizeof(event));
gettimeofday(&event.time, 0);
event.type = type;
event.code = code;
event.value = value;
if (write(fd, &event, sizeof(event)) != sizeof(event)) {
// @todo: elaborate
// PyErr_SetString(PyExc_IOError, "error writing event to uinput device");
PyErr_SetFromErrno(PyExc_IOError);
return NULL;
}
Py_RETURN_NONE;
}
static PyObject *
uinput_enable_event(PyObject *self, PyObject *args)
{
int fd;
uint16_t type, code;
unsigned long req;
int ret = PyArg_ParseTuple(args, "ihh", &fd, &type, &code);
if (!ret) return NULL;
switch (type) {
case EV_KEY: req = UI_SET_KEYBIT; break;
case EV_ABS: req = UI_SET_ABSBIT; break;
case EV_REL: req = UI_SET_RELBIT; break;
case EV_MSC: req = UI_SET_MSCBIT; break;
case EV_SW: req = UI_SET_SWBIT; break;
case EV_LED: req = UI_SET_LEDBIT; break;
case EV_FF: req = UI_SET_FFBIT; break;
case EV_SND: req = UI_SET_SNDBIT; break;
default:
errno = EINVAL;
goto on_err;
}
if (ioctl(fd, UI_SET_EVBIT, type) < 0)
goto on_err;
if (ioctl(fd, req, code) < 0)
goto on_err;
Py_RETURN_NONE;
on_err:
_uinput_close(fd);
PyErr_SetFromErrno(PyExc_IOError);
return NULL;
}
#define MODULE_NAME "_uinput"
#define MODULE_HELP "Python bindings for parts of linux/uinput.c"
static PyMethodDef MethodTable[] = {
{ "open", uinput_open, METH_VARARGS,
"Open uinput device node."},
{ "create", uinput_create, METH_VARARGS,
"Create an uinput device."},
{ "close", uinput_close, METH_VARARGS,
"Destroy uinput device."},
{ "write", uinput_write, METH_VARARGS,
"Write event to uinput device."},
{ "enable", uinput_enable_event, METH_VARARGS,
"Enable a type of event."},
{ "set_phys", uinput_set_phys, METH_VARARGS,
"Set physical path"},
{ NULL, NULL, 0, NULL}
};
#if PY_MAJOR_VERSION >= 3
static struct PyModuleDef moduledef = {
PyModuleDef_HEAD_INIT,
MODULE_NAME,
MODULE_HELP,
-1, /* m_size */
MethodTable, /* m_methods */
NULL, /* m_reload */
NULL, /* m_traverse */
NULL, /* m_clear */
NULL, /* m_free */
};
static PyObject *
moduleinit(void)
{
PyObject* m = PyModule_Create(&moduledef);
if (m == NULL) return NULL;
PyModule_AddIntConstant(m, "maxnamelen", UINPUT_MAX_NAME_SIZE);
return m;
}
PyMODINIT_FUNC
PyInit__uinput(void)
{
return moduleinit();
}
#else
static PyObject *
moduleinit(void)
{
PyObject* m = Py_InitModule3(MODULE_NAME, MethodTable, MODULE_HELP);
if (m == NULL) return NULL;
PyModule_AddIntConstant(m, "maxnamelen", UINPUT_MAX_NAME_SIZE);
return m;
}
PyMODINIT_FUNC
init_uinput(void)
{
moduleinit();
}
#endif