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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	sbin/wsconsctl/mousecfg.c	Lines:	0	116	0.0 %
Date:	2017-11-13	Branches:	0	96	0.0 %


/* $OpenBSD: mousecfg.c,v 1.1 2017/07/21 20:38:20 bru Exp $ */

/*
 * Copyright (c) 2017 Ulf Brosziewski
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

/*
 * Read/write wsmouse parameters for touchpad configuration.
 */

#include <sys/ioctl.h>
#include <sys/param.h>
#include <dev/wscons/wsconsio.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <err.h>
#include <errno.h>
#include "mousecfg.h"

#define BASE_FIRST		WSMOUSECFG_DX_SCALE
#define BASE_LAST		WSMOUSECFG_Y_INV
#define TP_FILTER_FIRST		WSMOUSECFG_DX_MAX
#define TP_FILTER_LAST		WSMOUSECFG_SMOOTHING
#define TP_FEATURES_FIRST	WSMOUSECFG_SOFTBUTTONS
#define TP_FEATURES_LAST	WSMOUSECFG_TAPPING
#define TP_SETUP_FIRST		WSMOUSECFG_LEFT_EDGE
#define TP_SETUP_LAST		WSMOUSECFG_TAP_LOCKTIME

#define BASESIZE (BASE_LAST - BASE_FIRST + 1)

#define BUFSIZE (BASESIZE \
    + (TP_FILTER_LAST - TP_FILTER_FIRST + 1) \
    + (TP_FEATURES_LAST - TP_FEATURES_FIRST + 1) \
    + (TP_SETUP_LAST - TP_SETUP_FIRST + 1))

static const int range[][2] = {
	{ BASE_FIRST, BASE_LAST },
	{ TP_FILTER_FIRST, TP_FILTER_LAST },
	{ TP_FEATURES_FIRST, TP_FEATURES_LAST },
	{ TP_SETUP_FIRST, TP_SETUP_LAST },
};

static const int touchpad_types[] = {
	WSMOUSE_TYPE_SYNAPTICS,		/* Synaptics touchpad */
	WSMOUSE_TYPE_ALPS,		/* ALPS touchpad */
	WSMOUSE_TYPE_ELANTECH,		/* Elantech touchpad */
	WSMOUSE_TYPE_SYNAP_SBTN,	/* Synaptics soft buttons */
};

struct wsmouse_parameters cfg_tapping = {
	(struct wsmouse_param[]) {
	    { WSMOUSECFG_TAPPING, 0 }, },
	1
};

struct wsmouse_parameters cfg_scaling = {
	(struct wsmouse_param[]) {
	    { WSMOUSECFG_DX_SCALE, 0 },
	    { WSMOUSECFG_DY_SCALE, 0 } },
	2
};

struct wsmouse_parameters cfg_swapsides = {
	(struct wsmouse_param[]) {
	    { WSMOUSECFG_SWAPSIDES, 0 }, },
	1
};

struct wsmouse_parameters cfg_disable = {
	(struct wsmouse_param[]) {
	    { WSMOUSECFG_DISABLE, 0 }, },
	1
};

struct wsmouse_parameters cfg_param = {
	(struct wsmouse_param[]) {
	    { -1, 0 },
	    { -1, 0 },
	    { -1, 0 },
	    { -1, 0 } },
	4
};

static int cfg_horiz_res;
static int cfg_vert_res;
static struct wsmouse_param cfg_buffer[BUFSIZE];


int
mousecfg_init(int dev_fd, const char **errstr)
{
	struct wsmouse_calibcoords coords;
	struct wsmouse_parameters parameters;
	struct wsmouse_param *param;
	enum wsmousecfg k;
	int i, err, type;

	*errstr = NULL;

	if ((err = ioctl(dev_fd, WSMOUSEIO_GTYPE, &type))) {
		*errstr = "WSMOUSEIO_GTYPE";
		return err;
	}
	for (i = 0; i < nitems(touchpad_types)
	    && type != touchpad_types[i]; i++) {}

	/*
	 * If the device is not a touchpad, return an error without
	 * setting the error string.  The caller shouldn't print a
	 * warning in this case.
	 */
	if (i == nitems(touchpad_types))
		return (-1);

	if ((err = ioctl(dev_fd, WSMOUSEIO_GCALIBCOORDS, &coords))) {
		*errstr = "WSMOUSEIO_GCALIBCOORDS";
		return err;
	}
	cfg_horiz_res = coords.resx;
	cfg_vert_res = coords.resy;

	param = cfg_buffer;
	for (i = 0; i < nitems(range); i++)
		for (k = range[i][0]; k <= range[i][1]; k++, param++) {
			param->key = k;
			param->value = 0;
		}

	/*
	 * Not all touchpad drivers configure wsmouse for compat mode yet.
	 * In those cases the first ioctl call may be successful but the
	 * second one will fail because it includes wstpad parameters:
	 */
	parameters.params = cfg_buffer;
	parameters.nparams = BASESIZE;
	if ((err = ioctl(dev_fd, WSMOUSEIO_GETPARAMS, &parameters))) {
		*errstr = "WSMOUSEIO_GETPARAMS";
		return (err);
	}
	parameters.params = cfg_buffer + BASESIZE;
	parameters.nparams = BUFSIZE - BASESIZE;
	if ((err = ioctl(dev_fd, WSMOUSEIO_GETPARAMS, &parameters))) {
		if (err != EINVAL)
			*errstr = "WSMOUSEIO_GETPARAMS";
		return (err);
	}

	return (0);
}

/* Map a key to its buffer index. */
static int
index_of(enum wsmousecfg key)
{
	int i, n;

	for (i = 0, n = 0; i < nitems(range); i++)
		if (key <= range[i][1] && key >= range[i][0])
			return (key - range[i][0] + n);
		else
			n += range[i][1] - range[i][0] + 1;

	return (-1);
}

int
mousecfg_get_field(struct wsmouse_parameters *field)
{
	int i, n;

	for (i = 0; i < field->nparams; i++) {
		if ((n = index_of(field->params[i].key)) >= 0)
			field->params[i].value = cfg_buffer[n].value;
		else
			return (-1);
	}
	return (0);
}

int
mousecfg_put_field(int fd, struct wsmouse_parameters *field)
{
	int i, n, d, err;

	d = 0;
	for (i = 0; i < field->nparams; i++)
		if ((n = index_of(field->params[i].key)) < 0)
			return (-1);
		else
			d |= (cfg_buffer[n].value != field->params[i].value);

	if (!d)
		return (0);

	/* Write and read back immediately, wsmouse may normalize values. */
	if ((err = ioctl(fd, WSMOUSEIO_SETPARAMS, field))
	    || (err = ioctl(fd, WSMOUSEIO_GETPARAMS, field)))
		return err;

	for (i = 0; i < field->nparams; i++)
		cfg_buffer[n].value = field->params[i].value;

	return (0);
}

static int
get_value(struct wsmouse_parameters *field, enum wsmousecfg key)
{
	int i;

	for (i = 0; i < field->nparams && key != field->params[i].key; i++) {}

	return (i < field->nparams ? field->params[i].value : 0);
}

static void
set_value(struct wsmouse_parameters *field, enum wsmousecfg key, int value)
{
	int i;

	for (i = 0; i < field->nparams && key != field->params[i].key; i++) {}

	field->params[i].value = (i < field->nparams ? value : 0);
}

/*
 * Read or write up to four raw parameter values.  In this case
 * reading is a 'put' operation that writes back a value from the
 * buffer.
 */
static int
read_param(struct wsmouse_parameters *field, char *val)
{
	int i, j, n;

	n = sscanf(val, "%d:%d,%d:%d,%d:%d,%d:%d",
		&field->params[0].key, &field->params[0].value,
		&field->params[1].key, &field->params[1].value,
		&field->params[2].key, &field->params[2].value,
		&field->params[3].key, &field->params[3].value);
	if (n > 0 && (n & 1) == 0) {
		n /= 2;
		for (i = 0; i < n; i++) {
			if (index_of(field->params[i].key) < 0)
				return (-1);
		}
		field->nparams = n;
		return (0);
	}
	n = sscanf(val, "%d,%d,%d,%d",
		&field->params[0].key, &field->params[1].key,
		&field->params[2].key, &field->params[3].key);
	if (n > 0) {
		for (i = 0; i < n; i++) {
			if ((j = index_of(field->params[i].key)) < 0)
				return (-1);
			field->params[i].value = cfg_buffer[j].value;
		}
		field->nparams = n;
		return (0);
	}
	return (-1);
}

void
mousecfg_pr_field(struct wsmouse_parameters *field)
{
	int i, value;
	float f;

	if (field == &cfg_param) {
		for (i = 0; i < field->nparams; i++)
			printf(i > 0 ? ",%d:%d" : "%d:%d",
			    field->params[i].key,
			    field->params[i].value);
		return;
	}

	if (field == &cfg_scaling) {
		value = get_value(field, WSMOUSECFG_DX_SCALE);
		f = (float) value / 4096;
		printf("%.3f", f);
		return;
	}

	for (i = 0; i < field->nparams; i++)
		printf(i > 0 ? ",%d" : "%d", field->params[i].value);
}

void
mousecfg_rd_field(struct wsmouse_parameters *field, char *val)
{
	enum wsmousecfg first = field->params[0].key;
	int i, n;
	const char *s;
	float f;

	if (field == &cfg_param) {
		if (read_param(field, val))
			errx(1, "invalid input (param)");
		return;
	}

	if (field == &cfg_scaling) {
		if (sscanf(val, "%f", &f) == 1) {
			n = (int) (f * 4096);
			set_value(field, WSMOUSECFG_DX_SCALE, n);
			if (cfg_horiz_res && cfg_vert_res)
				n = n * cfg_horiz_res / cfg_vert_res;
			set_value(field, WSMOUSECFG_DY_SCALE, n);
		} else {
			errx(1, "invalid input (scaling)");
		}
		return;
	}

	s = val;
	for (i = 0; i < field->nparams; i++) {
		if (sscanf(s, (i > 0 ? ",%d" : "%d"), &n) != 1)
			break;
		field->params[i].value = abs(n);
		for (s++; *s != '\0' && *s != ','; s++) {}
	}
	if (i < field->nparams || *s != '\0')
		errx(1, "invalid input '%s'", val);
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: mousecfg.c,v 1.1 2017/07/21 20:38:20 bru Exp $ */
2
3			/*
4			* Copyright (c) 2017 Ulf Brosziewski
5			*
6			* Permission to use, copy, modify, and distribute this software for any
7			* purpose with or without fee is hereby granted, provided that the above
8			* copyright notice and this permission notice appear in all copies.
9			*
10			* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11			* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12			* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13			* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14			* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15			* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16			* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17			*/
18
19			/*
20			* Read/write wsmouse parameters for touchpad configuration.
21			*/
22
23			#include <sys/ioctl.h>
24			#include <sys/param.h>
25			#include <dev/wscons/wsconsio.h>
26			#include <stdio.h>
27			#include <stdlib.h>
28			#include <string.h>
29			#include <err.h>
30			#include <errno.h>
31			#include "mousecfg.h"
32
33			#define BASE_FIRST WSMOUSECFG_DX_SCALE
34			#define BASE_LAST WSMOUSECFG_Y_INV
35			#define TP_FILTER_FIRST WSMOUSECFG_DX_MAX
36			#define TP_FILTER_LAST WSMOUSECFG_SMOOTHING
37			#define TP_FEATURES_FIRST WSMOUSECFG_SOFTBUTTONS
38			#define TP_FEATURES_LAST WSMOUSECFG_TAPPING
39			#define TP_SETUP_FIRST WSMOUSECFG_LEFT_EDGE
40			#define TP_SETUP_LAST WSMOUSECFG_TAP_LOCKTIME
41
42			#define BASESIZE (BASE_LAST - BASE_FIRST + 1)
43
44			#define BUFSIZE (BASESIZE \
45			+ (TP_FILTER_LAST - TP_FILTER_FIRST + 1) \
46			+ (TP_FEATURES_LAST - TP_FEATURES_FIRST + 1) \
47			+ (TP_SETUP_LAST - TP_SETUP_FIRST + 1))
48
49			static const int range[][2] = {
50			{ BASE_FIRST, BASE_LAST },
51			{ TP_FILTER_FIRST, TP_FILTER_LAST },
52			{ TP_FEATURES_FIRST, TP_FEATURES_LAST },
53			{ TP_SETUP_FIRST, TP_SETUP_LAST },
54			};
55
56			static const int touchpad_types[] = {
57			WSMOUSE_TYPE_SYNAPTICS, /* Synaptics touchpad */
58			WSMOUSE_TYPE_ALPS, /* ALPS touchpad */
59			WSMOUSE_TYPE_ELANTECH, /* Elantech touchpad */
60			WSMOUSE_TYPE_SYNAP_SBTN, /* Synaptics soft buttons */
61			};
62
63			struct wsmouse_parameters cfg_tapping = {
64			(struct wsmouse_param[]) {
65			{ WSMOUSECFG_TAPPING, 0 }, },
66			1
67			};
68
69			struct wsmouse_parameters cfg_scaling = {
70			(struct wsmouse_param[]) {
71			{ WSMOUSECFG_DX_SCALE, 0 },
72			{ WSMOUSECFG_DY_SCALE, 0 } },
73			2
74			};
75
76			struct wsmouse_parameters cfg_swapsides = {
77			(struct wsmouse_param[]) {
78			{ WSMOUSECFG_SWAPSIDES, 0 }, },
79			1
80			};
81
82			struct wsmouse_parameters cfg_disable = {
83			(struct wsmouse_param[]) {
84			{ WSMOUSECFG_DISABLE, 0 }, },
85			1
86			};
87
88			struct wsmouse_parameters cfg_param = {
89			(struct wsmouse_param[]) {
90			{ -1, 0 },
91			{ -1, 0 },
92			{ -1, 0 },
93			{ -1, 0 } },
94			4
95			};
96
97			static int cfg_horiz_res;
98			static int cfg_vert_res;
99			static struct wsmouse_param cfg_buffer[BUFSIZE];
100
101
102			int
103			mousecfg_init(int dev_fd, const char **errstr)
104			{
105			struct wsmouse_calibcoords coords;
106			struct wsmouse_parameters parameters;
107			struct wsmouse_param *param;
108			enum wsmousecfg k;
109			int i, err, type;
110
111			*errstr = NULL;
112
113			if ((err = ioctl(dev_fd, WSMOUSEIO_GTYPE, &type))) {
114			*errstr = "WSMOUSEIO_GTYPE";
115			return err;
116			}
117			for (i = 0; i < nitems(touchpad_types)
118			&& type != touchpad_types[i]; i++) {}
119
120			/*
121			* If the device is not a touchpad, return an error without
122			* setting the error string. The caller shouldn't print a
123			* warning in this case.
124			*/
125			if (i == nitems(touchpad_types))
126			return (-1);
127
128			if ((err = ioctl(dev_fd, WSMOUSEIO_GCALIBCOORDS, &coords))) {
129			*errstr = "WSMOUSEIO_GCALIBCOORDS";
130			return err;
131			}
132			cfg_horiz_res = coords.resx;
133			cfg_vert_res = coords.resy;
134
135			param = cfg_buffer;
136			for (i = 0; i < nitems(range); i++)
137			for (k = range[i][0]; k <= range[i][1]; k++, param++) {
138			param->key = k;
139			param->value = 0;
140			}
141
142			/*
143			* Not all touchpad drivers configure wsmouse for compat mode yet.
144			* In those cases the first ioctl call may be successful but the
145			* second one will fail because it includes wstpad parameters:
146			*/
147			parameters.params = cfg_buffer;
148			parameters.nparams = BASESIZE;
149			if ((err = ioctl(dev_fd, WSMOUSEIO_GETPARAMS, &parameters))) {
150			*errstr = "WSMOUSEIO_GETPARAMS";
151			return (err);
152			}
153			parameters.params = cfg_buffer + BASESIZE;
154			parameters.nparams = BUFSIZE - BASESIZE;
155			if ((err = ioctl(dev_fd, WSMOUSEIO_GETPARAMS, &parameters))) {
156			if (err != EINVAL)
157			*errstr = "WSMOUSEIO_GETPARAMS";
158			return (err);
159			}
160
161			return (0);
162			}
163
164			/* Map a key to its buffer index. */
165			static int
166			index_of(enum wsmousecfg key)
167			{
168			int i, n;
169
170			for (i = 0, n = 0; i < nitems(range); i++)
171			if (key <= range[i][1] && key >= range[i][0])
172			return (key - range[i][0] + n);
173			else
174			n += range[i][1] - range[i][0] + 1;
175
176			return (-1);
177			}
178
179			int
180			mousecfg_get_field(struct wsmouse_parameters *field)
181			{
182			int i, n;
183
184			for (i = 0; i < field->nparams; i++) {
185			if ((n = index_of(field->params[i].key)) >= 0)
186			field->params[i].value = cfg_buffer[n].value;
187			else
188			return (-1);
189			}
190			return (0);
191			}
192
193			int
194			mousecfg_put_field(int fd, struct wsmouse_parameters *field)
195			{
196			int i, n, d, err;
197
198			d = 0;
199			for (i = 0; i < field->nparams; i++)
200			if ((n = index_of(field->params[i].key)) < 0)
201			return (-1);
202			else
203			d \|= (cfg_buffer[n].value != field->params[i].value);
204
205			if (!d)
206			return (0);
207
208			/* Write and read back immediately, wsmouse may normalize values. */
209			if ((err = ioctl(fd, WSMOUSEIO_SETPARAMS, field))
210			\|\| (err = ioctl(fd, WSMOUSEIO_GETPARAMS, field)))
211			return err;
212
213			for (i = 0; i < field->nparams; i++)
214			cfg_buffer[n].value = field->params[i].value;
215
216			return (0);
217			}
218
219			static int
220			get_value(struct wsmouse_parameters *field, enum wsmousecfg key)
221			{
222			int i;
223
224			for (i = 0; i < field->nparams && key != field->params[i].key; i++) {}
225
226			return (i < field->nparams ? field->params[i].value : 0);
227			}
228
229			static void
230			set_value(struct wsmouse_parameters *field, enum wsmousecfg key, int value)
231			{
232			int i;
233
234			for (i = 0; i < field->nparams && key != field->params[i].key; i++) {}
235
236			field->params[i].value = (i < field->nparams ? value : 0);
237			}
238
239			/*
240			* Read or write up to four raw parameter values. In this case
241			* reading is a 'put' operation that writes back a value from the
242			* buffer.
243			*/
244			static int
245			read_param(struct wsmouse_parameters field, char val)
246			{
247			int i, j, n;
248
249			n = sscanf(val, "%d:%d,%d:%d,%d:%d,%d:%d",
250			&field->params[0].key, &field->params[0].value,
251			&field->params[1].key, &field->params[1].value,
252			&field->params[2].key, &field->params[2].value,
253			&field->params[3].key, &field->params[3].value);
254			if (n > 0 && (n & 1) == 0) {
255			n /= 2;
256			for (i = 0; i < n; i++) {
257			if (index_of(field->params[i].key) < 0)
258			return (-1);
259			}
260			field->nparams = n;
261			return (0);
262			}
263			n = sscanf(val, "%d,%d,%d,%d",
264			&field->params[0].key, &field->params[1].key,
265			&field->params[2].key, &field->params[3].key);
266			if (n > 0) {
267			for (i = 0; i < n; i++) {
268			if ((j = index_of(field->params[i].key)) < 0)
269			return (-1);
270			field->params[i].value = cfg_buffer[j].value;
271			}
272			field->nparams = n;
273			return (0);
274			}
275			return (-1);
276			}
277
278			void
279			mousecfg_pr_field(struct wsmouse_parameters *field)
280			{
281			int i, value;
282			float f;
283
284			if (field == &cfg_param) {
285			for (i = 0; i < field->nparams; i++)
286			printf(i > 0 ? ",%d:%d" : "%d:%d",
287			field->params[i].key,
288			field->params[i].value);
289			return;
290			}
291
292			if (field == &cfg_scaling) {
293			value = get_value(field, WSMOUSECFG_DX_SCALE);
294			f = (float) value / 4096;
295			printf("%.3f", f);
296			return;
297			}
298
299			for (i = 0; i < field->nparams; i++)
300			printf(i > 0 ? ",%d" : "%d", field->params[i].value);
301			}
302
303			void
304			mousecfg_rd_field(struct wsmouse_parameters field, char val)
305			{
306			enum wsmousecfg first = field->params[0].key;
307			int i, n;
308			const char *s;
309			float f;
310
311			if (field == &cfg_param) {
312			if (read_param(field, val))
313			errx(1, "invalid input (param)");
314			return;
315			}
316
317			if (field == &cfg_scaling) {
318			if (sscanf(val, "%f", &f) == 1) {
319			n = (int) (f * 4096);
320			set_value(field, WSMOUSECFG_DX_SCALE, n);
321			if (cfg_horiz_res && cfg_vert_res)
322			n = n * cfg_horiz_res / cfg_vert_res;
323			set_value(field, WSMOUSECFG_DY_SCALE, n);
324			} else {
325			errx(1, "invalid input (scaling)");
326			}
327			return;
328			}
329
330			s = val;
331			for (i = 0; i < field->nparams; i++) {
332			if (sscanf(s, (i > 0 ? ",%d" : "%d"), &n) != 1)
333			break;
334			field->params[i].value = abs(n);
335			for (s++; s != '\0' && s != ','; s++) {}
336			}
337			if (i < field->nparams \|\| *s != '\0')
338			errx(1, "invalid input '%s'", val);
339			}