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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	usr.bin/usbhidaction/usbhidaction.c	Lines:	0	218	0.0 %
Date:	2017-11-07	Branches:	0	158	0.0 %


/*	$OpenBSD: usbhidaction.c,v 1.22 2016/03/17 19:40:43 krw Exp $ */
/*      $NetBSD: usbhidaction.c,v 1.7 2002/01/18 14:38:59 augustss Exp $ */

/*
 * Copyright (c) 2000, 2002 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Lennart Augustsson <lennart@augustsson.net>.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <err.h>
#include <fcntl.h>
#include <limits.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/ioctl.h>
#include <dev/usb/usb.h>
#include <dev/usb/usbhid.h>
#include <usbhid.h>
#include <syslog.h>
#include <signal.h>
#include <paths.h>

int verbose = 0;
int isdemon = 0;

volatile sig_atomic_t reparse = 0;

struct command {
	struct command *next;
	int line;

	struct hid_item item;
	int value;
	char anyvalue;
	char *name;
	char *action;
};
struct command *commands;

#define SIZE 4000

void usage(void);
struct command *parse_conf(const char *, report_desc_t, int, int);
void docmd(struct command *, int, const char *, int, char **);
void freecommands(struct command *);

/* ARGSUSED */
static void
sighup(int signo)
{
	reparse = 1;
}

int
main(int argc, char **argv)
{
	const char *conf = NULL;
	const char *dev = NULL;
	int fd, ch, sz, n, val, i;
	int demon, ignore;
	report_desc_t repd;
	char buf[100];
	char devnamebuf[PATH_MAX];
	struct command *cmd;
	int reportid;

	demon = 1;
	ignore = 0;
	while ((ch = getopt(argc, argv, "c:df:iv")) != -1) {
		switch(ch) {
		case 'c':
			conf = optarg;
			break;
		case 'd':
			demon ^= 1;
			break;
		case 'i':
			ignore++;
			break;
		case 'f':
			dev = optarg;
			break;
		case 'v':
			demon = 0;
			verbose++;
			break;
		case '?':
		default:
			usage();
		}
	}
	argc -= optind;
	argv += optind;

	if (conf == NULL || dev == NULL)
		usage();

	if (hid_start(NULL) == -1)
		errx(1, "hid_init");

	if (dev[0] != '/') {
		snprintf(devnamebuf, sizeof(devnamebuf), "/dev/%s%s",
		    isdigit((unsigned char)dev[0]) ? "uhid" : "", dev);
		dev = devnamebuf;
	}

	if (demon && conf[0] != '/')
		errx(1, "config file must have an absolute path, %s", conf);

	fd = open(dev, O_RDWR | O_CLOEXEC);
	if (fd < 0)
		err(1, "%s", dev);

	if (ioctl(fd, USB_GET_REPORT_ID, &reportid) < 0)
		reportid = -1;
	repd = hid_get_report_desc(fd);
	if (repd == NULL)
		err(1, "hid_get_report_desc() failed");

	commands = parse_conf(conf, repd, reportid, ignore);

	sz = hid_report_size(repd, hid_input, reportid);

	if (verbose)
		printf("report size %d\n", sz);
	if (sz > sizeof buf)
		errx(1, "report too large");

	(void)signal(SIGHUP, sighup);

	/* we do not care about the children, so ignore them */
	(void)signal(SIGCHLD, SIG_IGN);

	if (demon) {
		if (daemon(0, 0) < 0)
			err(1, "daemon()");
		isdemon = 1;
	}

	for(;;) {
		n = read(fd, buf, sz);
		if (verbose > 2) {
			printf("read %d bytes:", n);
			for (i = 0; i < n; i++)
				printf(" %02x", buf[i]);
			printf("\n");
		}
		if (n < 0) {
			if (verbose)
				err(1, "read");
			else
				exit(1);
		}
		if (n != sz) {
			err(2, "read size");
		}
		for (cmd = commands; cmd; cmd = cmd->next) {
			val = hid_get_data(buf, &cmd->item);
			if (cmd->value == val || cmd->anyvalue)
				docmd(cmd, val, dev, argc, argv);
		}
		if (reparse) {
			struct command *cmds =
			    parse_conf(conf, repd, reportid, ignore);
			if (cmds) {
				freecommands(commands);
				commands = cmds;
			}
			reparse = 0;
		}
	}

	exit(0);
}

void
usage(void)
{
	extern char *__progname;

	fprintf(stderr, "usage: %s [-div] -c config-file -f device arg ...\n",
	    __progname);
	exit(1);
}

static int
peek(FILE *f)
{
	int c;

	c = getc(f);
	if (c != EOF)
		ungetc(c, f);
	return c;
}

struct command *
parse_conf(const char *conf, report_desc_t repd, int reportid, int ignore)
{
	FILE *f;
	char *p;
	int line;
	char buf[SIZE], name[SIZE], value[SIZE], action[SIZE];
	char usage[SIZE], coll[SIZE];
	struct command *cmd, *cmds;
	struct hid_data *d;
	struct hid_item h;
	int u, lo, hi, range;

	f = fopen(conf, "r");
	if (f == NULL)
		err(1, "%s", conf);

	cmds = NULL;
	for (line = 1; ; line++) {
		if (fgets(buf, sizeof buf, f) == NULL)
			break;
		if (buf[0] == '#' || buf[0] == '\n')
			continue;
		p = strchr(buf, '\n');
		while (p && isspace(peek(f))) {
			if (fgets(p, sizeof buf - strlen(buf), f) == NULL)
				break;
			p = strchr(buf, '\n');
		}
		if (p)
			*p = 0;
		if (sscanf(buf, "%s %s %[^\n]", name, value, action) != 3) {
			if (isdemon) {
				syslog(LOG_WARNING, "config file `%s', line %d"
				    ", syntax error: %s", conf, line, buf);
				freecommands(cmds);
				fclose(f);
				return (NULL);
			} else {
				errx(1, "config file `%s', line %d"
				    ", syntax error: %s", conf, line, buf);
			}
		}

		cmd = malloc(sizeof *cmd);
		if (cmd == NULL)
			err(1, "malloc failed");
		cmd->next = cmds;
		cmds = cmd;
		cmd->line = line;

		if (strcmp(value, "*") == 0) {
			cmd->anyvalue = 1;
		} else {
			cmd->anyvalue = 0;
			if (sscanf(value, "%d", &cmd->value) != 1) {
				if (isdemon) {
					syslog(LOG_WARNING,
					    "config file `%s', line %d, "
					    "bad value: %s",
					    conf, line, value);
					freecommands(cmds);
					fclose(f);
					return (NULL);
				} else {
					errx(1, "config file `%s', line %d, "
					    "bad value: %s",
					    conf, line, value);
				}
			}
		}

		coll[0] = 0;
		d = hid_start_parse(repd, 1 << hid_input, reportid);
		if (d == NULL)
			err(1, "hid_start_parse failed");
		while (hid_get_item(d, &h)) {
			if (verbose > 2)
				printf("kind=%d usage=%x\n", h.kind, h.usage);
			if (h.flags & HIO_CONST)
				continue;
			switch (h.kind) {
			case hid_input:
				if (h.usage_minimum != 0 ||
				    h.usage_maximum != 0) {
					lo = h.usage_minimum;
					hi = h.usage_maximum;
					range = 1;
				} else {
					lo = h.usage;
					hi = h.usage;
					range = 0;
				}
				for (u = lo; u <= hi; u++) {
					snprintf(usage, sizeof usage,  "%s:%s",
						 hid_usage_page(HID_PAGE(u)),
						 hid_usage_in_page(u));
					if (verbose > 2)
						printf("usage %s\n", usage);
					if (!strcasecmp(usage, name))
						goto foundhid;
					if (coll[0]) {
						snprintf(usage, sizeof usage,
						  "%s.%s:%s", coll+1,
						  hid_usage_page(HID_PAGE(u)),
						  hid_usage_in_page(u));
						if (verbose > 2)
							printf("usage %s\n",
							    usage);
						if (!strcasecmp(usage, name))
							goto foundhid;
					}
				}
				break;
			case hid_collection:
				snprintf(coll + strlen(coll),
				    sizeof coll - strlen(coll),  ".%s:%s",
				    hid_usage_page(HID_PAGE(h.usage)),
				    hid_usage_in_page(h.usage));
				break;
			case hid_endcollection:
				if (coll[0])
					*strrchr(coll, '.') = 0;
				break;
			default:
				break;
			}
		}
		hid_end_parse(d);
		if (ignore) {
			if (verbose)
				warnx("ignore item '%s'", name);
			/* pop and free this ignored item */
			cmds = cmd->next;
			free(cmd);
			continue;
		}
		if (isdemon) {
			syslog(LOG_WARNING, "config file `%s', line %d, HID "
			    "item not found: `%s'", conf, line, name);
			freecommands(cmds);
			fclose(f);
			return (NULL);
		} else {
			errx(1, "config file `%s', line %d, HID item "
			    "not found: `%s'", conf, line, name);
		}

	foundhid:
		hid_end_parse(d);
		cmd->item = h;
		cmd->name = strdup(name);
		cmd->action = strdup(action);
		if (range) {
			if (cmd->value == 1)
				cmd->value = u - lo;
			else
				cmd->value = -1;
		}

		if (verbose)
			printf("PARSE:%d %s, %d, '%s'\n", cmd->line, name,
			    cmd->value, cmd->action);
	}
	fclose(f);
	return (cmds);
}

void
docmd(struct command *cmd, int value, const char *hid, int argc, char **argv)
{
	char cmdbuf[SIZE], *p, *q;
	size_t len;
	int n, r;
	pid_t pid;

	if (cmd->action == NULL) {
		if (verbose)
			printf("no action for device %s value %d\n",
			    hid, value);
		return;
	}
	for (p = cmd->action, q = cmdbuf; *p && q < &cmdbuf[SIZE-1]; ) {
		if (*p == '$') {
			p++;
			len = &cmdbuf[SIZE-1] - q;
			if (isdigit((unsigned char)*p)) {
				n = strtol(p, &p, 10) - 1;
				if (n >= 0 && n < argc) {
					strncpy(q, argv[n], len);
					q += strlen(q);
				}
			} else if (*p == 'V') {
				p++;
				snprintf(q, len, "%d", value);
				q += strlen(q);
			} else if (*p == 'N') {
				p++;
				strncpy(q, cmd->name, len);
				q += strlen(q);
			} else if (*p == 'H') {
				p++;
				strncpy(q, hid, len);
				q += strlen(q);
			} else if (*p) {
				*q++ = *p++;
			}
		} else {
			*q++ = *p++;
		}
	}
	*q = 0;

	pid = fork();
	if (pid == -1)
		warn("fork failed");
	else if (pid == 0) {
		setpgid(0, 0);
		if (verbose)
			printf("executing '%s'\n", cmdbuf);
		r = execl(_PATH_BSHELL, "sh", "-c", cmdbuf, (char *)NULL);
		err(1, "execl");
	}
}

void
freecommands(struct command *cmd)
{
	struct command *next;

	while (cmd) {
		next = cmd->next;
		free(cmd);
		cmd = next;
	}
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: usbhidaction.c,v 1.22 2016/03/17 19:40:43 krw Exp $ */
2			/* $NetBSD: usbhidaction.c,v 1.7 2002/01/18 14:38:59 augustss Exp $ */
3
4			/*
5			* Copyright (c) 2000, 2002 The NetBSD Foundation, Inc.
6			* All rights reserved.
7			*
8			* This code is derived from software contributed to The NetBSD Foundation
9			* by Lennart Augustsson <lennart@augustsson.net>.
10			*
11			* Redistribution and use in source and binary forms, with or without
12			* modification, are permitted provided that the following conditions
13			* are met:
14			* 1. Redistributions of source code must retain the above copyright
15			* notice, this list of conditions and the following disclaimer.
16			* 2. Redistributions in binary form must reproduce the above copyright
17			* notice, this list of conditions and the following disclaimer in the
18			* documentation and/or other materials provided with the distribution.
19			*
20			* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
21			* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
22			* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23			* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
24			* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25			* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26			* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27			* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28			* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29			* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30			* POSSIBILITY OF SUCH DAMAGE.
31			*/
32
33			#include <stdio.h>
34			#include <stdlib.h>
35			#include <string.h>
36			#include <ctype.h>
37			#include <err.h>
38			#include <fcntl.h>
39			#include <limits.h>
40			#include <unistd.h>
41			#include <sys/types.h>
42			#include <sys/ioctl.h>
43			#include <dev/usb/usb.h>
44			#include <dev/usb/usbhid.h>
45			#include <usbhid.h>
46			#include <syslog.h>
47			#include <signal.h>
48			#include <paths.h>
49
50			int verbose = 0;
51			int isdemon = 0;
52
53			volatile sig_atomic_t reparse = 0;
54
55			struct command {
56			struct command *next;
57			int line;
58
59			struct hid_item item;
60			int value;
61			char anyvalue;
62			char *name;
63			char *action;
64			};
65			struct command *commands;
66
67			#define SIZE 4000
68
69			void usage(void);
70			struct command parse_conf(const char , report_desc_t, int, int);
71			void docmd(struct command , int, const char , int, char **);
72			void freecommands(struct command *);
73
74			/* ARGSUSED */
75			static void
76			sighup(int signo)
77			{
78			reparse = 1;
79			}
80
81			int
82			main(int argc, char **argv)
83			{
84			const char *conf = NULL;
85			const char *dev = NULL;
86			int fd, ch, sz, n, val, i;
87			int demon, ignore;
88			report_desc_t repd;
89			char buf[100];
90			char devnamebuf[PATH_MAX];
91			struct command *cmd;
92			int reportid;
93
94			demon = 1;
95			ignore = 0;
96			while ((ch = getopt(argc, argv, "c:df:iv")) != -1) {
97			switch(ch) {
98			case 'c':
99			conf = optarg;
100			break;
101			case 'd':
102			demon ^= 1;
103			break;
104			case 'i':
105			ignore++;
106			break;
107			case 'f':
108			dev = optarg;
109			break;
110			case 'v':
111			demon = 0;
112			verbose++;
113			break;
114			case '?':
115			default:
116			usage();
117			}
118			}
119			argc -= optind;
120			argv += optind;
121
122			if (conf == NULL \|\| dev == NULL)
123			usage();
124
125			if (hid_start(NULL) == -1)
126			errx(1, "hid_init");
127
128			if (dev[0] != '/') {
129			snprintf(devnamebuf, sizeof(devnamebuf), "/dev/%s%s",
130			isdigit((unsigned char)dev[0]) ? "uhid" : "", dev);
131			dev = devnamebuf;
132			}
133
134			if (demon && conf[0] != '/')
135			errx(1, "config file must have an absolute path, %s", conf);
136
137			fd = open(dev, O_RDWR \| O_CLOEXEC);
138			if (fd < 0)
139			err(1, "%s", dev);
140
141			if (ioctl(fd, USB_GET_REPORT_ID, &reportid) < 0)
142			reportid = -1;
143			repd = hid_get_report_desc(fd);
144			if (repd == NULL)
145			err(1, "hid_get_report_desc() failed");
146
147			commands = parse_conf(conf, repd, reportid, ignore);
148
149			sz = hid_report_size(repd, hid_input, reportid);
150
151			if (verbose)
152			printf("report size %d\n", sz);
153			if (sz > sizeof buf)
154			errx(1, "report too large");
155
156			(void)signal(SIGHUP, sighup);
157
158			/* we do not care about the children, so ignore them */
159			(void)signal(SIGCHLD, SIG_IGN);
160
161			if (demon) {
162			if (daemon(0, 0) < 0)
163			err(1, "daemon()");
164			isdemon = 1;
165			}
166
167			for(;;) {
168			n = read(fd, buf, sz);
169			if (verbose > 2) {
170			printf("read %d bytes:", n);
171			for (i = 0; i < n; i++)
172			printf(" %02x", buf[i]);
173			printf("\n");
174			}
175			if (n < 0) {
176			if (verbose)
177			err(1, "read");
178			else
179			exit(1);
180			}
181			if (n != sz) {
182			err(2, "read size");
183			}
184			for (cmd = commands; cmd; cmd = cmd->next) {
185			val = hid_get_data(buf, &cmd->item);
186			if (cmd->value == val \|\| cmd->anyvalue)
187			docmd(cmd, val, dev, argc, argv);
188			}
189			if (reparse) {
190			struct command *cmds =
191			parse_conf(conf, repd, reportid, ignore);
192			if (cmds) {
193			freecommands(commands);
194			commands = cmds;
195			}
196			reparse = 0;
197			}
198			}
199
200			exit(0);
201			}
202
203			void
204			usage(void)
205			{
206			extern char *__progname;
207
208			fprintf(stderr, "usage: %s [-div] -c config-file -f device arg ...\n",
209			__progname);
210			exit(1);
211			}
212
213			static int
214			peek(FILE *f)
215			{
216			int c;
217
218			c = getc(f);
219			if (c != EOF)
220			ungetc(c, f);
221			return c;
222			}
223
224			struct command *
225			parse_conf(const char *conf, report_desc_t repd, int reportid, int ignore)
226			{
227			FILE *f;
228			char *p;
229			int line;
230			char buf[SIZE], name[SIZE], value[SIZE], action[SIZE];
231			char usage[SIZE], coll[SIZE];
232			struct command cmd, cmds;
233			struct hid_data *d;
234			struct hid_item h;
235			int u, lo, hi, range;
236
237			f = fopen(conf, "r");
238			if (f == NULL)
239			err(1, "%s", conf);
240
241			cmds = NULL;
242			for (line = 1; ; line++) {
243			if (fgets(buf, sizeof buf, f) == NULL)
244			break;
245			if (buf[0] == '#' \|\| buf[0] == '\n')
246			continue;
247			p = strchr(buf, '\n');
248			while (p && isspace(peek(f))) {
249			if (fgets(p, sizeof buf - strlen(buf), f) == NULL)
250			break;
251			p = strchr(buf, '\n');
252			}
253			if (p)
254			*p = 0;
255			if (sscanf(buf, "%s %s %[^\n]", name, value, action) != 3) {
256			if (isdemon) {
257			syslog(LOG_WARNING, "config file `%s', line %d"
258			", syntax error: %s", conf, line, buf);
259			freecommands(cmds);
260			fclose(f);
261			return (NULL);
262			} else {
263			errx(1, "config file `%s', line %d"
264			", syntax error: %s", conf, line, buf);
265			}
266			}
267
268			cmd = malloc(sizeof *cmd);
269			if (cmd == NULL)
270			err(1, "malloc failed");
271			cmd->next = cmds;
272			cmds = cmd;
273			cmd->line = line;
274
275			if (strcmp(value, "*") == 0) {
276			cmd->anyvalue = 1;
277			} else {
278			cmd->anyvalue = 0;
279			if (sscanf(value, "%d", &cmd->value) != 1) {
280			if (isdemon) {
281			syslog(LOG_WARNING,
282			"config file `%s', line %d, "
283			"bad value: %s",
284			conf, line, value);
285			freecommands(cmds);
286			fclose(f);
287			return (NULL);
288			} else {
289			errx(1, "config file `%s', line %d, "
290			"bad value: %s",
291			conf, line, value);
292			}
293			}
294			}
295
296			coll[0] = 0;
297			d = hid_start_parse(repd, 1 << hid_input, reportid);
298			if (d == NULL)
299			err(1, "hid_start_parse failed");
300			while (hid_get_item(d, &h)) {
301			if (verbose > 2)
302			printf("kind=%d usage=%x\n", h.kind, h.usage);
303			if (h.flags & HIO_CONST)
304			continue;
305			switch (h.kind) {
306			case hid_input:
307			if (h.usage_minimum != 0 \|\|
308			h.usage_maximum != 0) {
309			lo = h.usage_minimum;
310			hi = h.usage_maximum;
311			range = 1;
312			} else {
313			lo = h.usage;
314			hi = h.usage;
315			range = 0;
316			}
317			for (u = lo; u <= hi; u++) {
318			snprintf(usage, sizeof usage, "%s:%s",
319			hid_usage_page(HID_PAGE(u)),
320			hid_usage_in_page(u));
321			if (verbose > 2)
322			printf("usage %s\n", usage);
323			if (!strcasecmp(usage, name))
324			goto foundhid;
325			if (coll[0]) {
326			snprintf(usage, sizeof usage,
327			"%s.%s:%s", coll+1,
328			hid_usage_page(HID_PAGE(u)),
329			hid_usage_in_page(u));
330			if (verbose > 2)
331			printf("usage %s\n",
332			usage);
333			if (!strcasecmp(usage, name))
334			goto foundhid;
335			}
336			}
337			break;
338			case hid_collection:
339			snprintf(coll + strlen(coll),
340			sizeof coll - strlen(coll), ".%s:%s",
341			hid_usage_page(HID_PAGE(h.usage)),
342			hid_usage_in_page(h.usage));
343			break;
344			case hid_endcollection:
345			if (coll[0])
346			*strrchr(coll, '.') = 0;
347			break;
348			default:
349			break;
350			}
351			}
352			hid_end_parse(d);
353			if (ignore) {
354			if (verbose)
355			warnx("ignore item '%s'", name);
356			/* pop and free this ignored item */
357			cmds = cmd->next;
358			free(cmd);
359			continue;
360			}
361			if (isdemon) {
362			syslog(LOG_WARNING, "config file `%s', line %d, HID "
363			"item not found: `%s'", conf, line, name);
364			freecommands(cmds);
365			fclose(f);
366			return (NULL);
367			} else {
368			errx(1, "config file `%s', line %d, HID item "
369			"not found: `%s'", conf, line, name);
370			}
371
372			foundhid:
373			hid_end_parse(d);
374			cmd->item = h;
375			cmd->name = strdup(name);
376			cmd->action = strdup(action);
377			if (range) {
378			if (cmd->value == 1)
379			cmd->value = u - lo;
380			else
381			cmd->value = -1;
382			}
383
384			if (verbose)
385			printf("PARSE:%d %s, %d, '%s'\n", cmd->line, name,
386			cmd->value, cmd->action);
387			}
388			fclose(f);
389			return (cmds);
390			}
391
392			void
393			docmd(struct command cmd, int value, const char hid, int argc, char **argv)
394			{
395			char cmdbuf[SIZE], p, q;
396			size_t len;
397			int n, r;
398			pid_t pid;
399
400			if (cmd->action == NULL) {
401			if (verbose)
402			printf("no action for device %s value %d\n",
403			hid, value);
404			return;
405			}
406			for (p = cmd->action, q = cmdbuf; *p && q < &cmdbuf[SIZE-1]; ) {
407			if (*p == '$') {
408			p++;
409			len = &cmdbuf[SIZE-1] - q;
410			if (isdigit((unsigned char)*p)) {
411			n = strtol(p, &p, 10) - 1;
412			if (n >= 0 && n < argc) {
413			strncpy(q, argv[n], len);
414			q += strlen(q);
415			}
416			} else if (*p == 'V') {
417			p++;
418			snprintf(q, len, "%d", value);
419			q += strlen(q);
420			} else if (*p == 'N') {
421			p++;
422			strncpy(q, cmd->name, len);
423			q += strlen(q);
424			} else if (*p == 'H') {
425			p++;
426			strncpy(q, hid, len);
427			q += strlen(q);
428			} else if (*p) {
429			q++ = p++;
430			}
431			} else {
432			q++ = p++;
433			}
434			}
435			*q = 0;
436
437			pid = fork();
438			if (pid == -1)
439			warn("fork failed");
440			else if (pid == 0) {
441			setpgid(0, 0);
442			if (verbose)
443			printf("executing '%s'\n", cmdbuf);
444			r = execl(_PATH_BSHELL, "sh", "-c", cmdbuf, (char *)NULL);
445			err(1, "execl");
446			}
447			}
448
449			void
450			freecommands(struct command *cmd)
451			{
452			struct command *next;
453
454			while (cmd) {
455			next = cmd->next;
456			free(cmd);
457			cmd = next;
458			}
459			}