036b26782d
1) Constness, unusedness and size_tness. 2) Don't clobber the value returned by hid_report_size in the daemon case. 3) Don't misspell "sizeof buf" as 100. 4) Don't run off the end of a buffer if the pid is about a google. 5) Avoid shadowing the usage function.
497 lines
11 KiB
C
497 lines
11 KiB
C
/* $NetBSD: usbhidaction.c,v 1.8 2002/06/11 06:06:21 itojun Exp $ */
|
|
/* $FreeBSD$ */
|
|
|
|
/*
|
|
* 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.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the NetBSD
|
|
* Foundation, Inc. and its contributors.
|
|
* 4. Neither the name of The NetBSD Foundation nor the names of its
|
|
* contributors may be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
*
|
|
* 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 <errno.h>
|
|
#include <sys/stat.h>
|
|
|
|
static int verbose = 0;
|
|
static int isdemon = 0;
|
|
static int reparse = 1;
|
|
static const char * pidfile = "/var/run/usbaction.pid";
|
|
|
|
struct command {
|
|
struct command *next;
|
|
int line;
|
|
|
|
struct hid_item item;
|
|
int value;
|
|
int lastseen;
|
|
int lastused;
|
|
int debounce;
|
|
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 *);
|
|
|
|
static void
|
|
sighup(int sig __unused)
|
|
{
|
|
reparse = 1;
|
|
}
|
|
|
|
int
|
|
main(int argc, char **argv)
|
|
{
|
|
const char *conf = NULL;
|
|
const char *dev = NULL;
|
|
int fd, fp, ch, n, val, i;
|
|
size_t sz, sz1;
|
|
int demon, ignore, dieearly;
|
|
report_desc_t repd;
|
|
char buf[100];
|
|
char devnamebuf[PATH_MAX];
|
|
struct command *cmd;
|
|
int reportid;
|
|
|
|
demon = 1;
|
|
ignore = 0;
|
|
dieearly = 0;
|
|
while ((ch = getopt(argc, argv, "c:def:ip:v")) != -1) {
|
|
switch(ch) {
|
|
case 'c':
|
|
conf = optarg;
|
|
break;
|
|
case 'd':
|
|
demon ^= 1;
|
|
break;
|
|
case 'e':
|
|
dieearly = 1;
|
|
break;
|
|
case 'i':
|
|
ignore++;
|
|
break;
|
|
case 'f':
|
|
dev = optarg;
|
|
break;
|
|
case 'p':
|
|
pidfile = optarg;
|
|
break;
|
|
case 'v':
|
|
demon = 0;
|
|
verbose++;
|
|
break;
|
|
case '?':
|
|
default:
|
|
usage();
|
|
}
|
|
}
|
|
argc -= optind;
|
|
argv += optind;
|
|
|
|
if (conf == NULL || dev == NULL)
|
|
usage();
|
|
|
|
hid_init(NULL);
|
|
|
|
if (dev[0] != '/') {
|
|
snprintf(devnamebuf, sizeof(devnamebuf), "/dev/%s%s",
|
|
isdigit(dev[0]) ? "uhid" : "", dev);
|
|
dev = devnamebuf;
|
|
}
|
|
|
|
fd = open(dev, O_RDWR);
|
|
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 = (size_t)hid_report_size(repd, hid_input, reportid);
|
|
|
|
if (verbose)
|
|
printf("report size %zu\n", sz);
|
|
if (sz > sizeof buf)
|
|
errx(1, "report too large");
|
|
|
|
(void)signal(SIGHUP, sighup);
|
|
|
|
if (demon) {
|
|
fp = open(pidfile, O_WRONLY|O_CREAT, S_IRUSR|S_IRGRP|S_IROTH);
|
|
if (fp >= 0) {
|
|
sz1 = snprintf(buf, sizeof buf, "%d\n", getpid());
|
|
if (sz1 > sizeof buf)
|
|
sz1 = sizeof buf;
|
|
write(fp, buf, sz1);
|
|
close(fp);
|
|
} else
|
|
err(1, "%s", pidfile);
|
|
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 0
|
|
if (n != sz) {
|
|
err(2, "read size");
|
|
}
|
|
#endif
|
|
for (cmd = commands; cmd; cmd = cmd->next) {
|
|
val = hid_get_data(buf, &cmd->item);
|
|
if (cmd->value != val && cmd->anyvalue == 0)
|
|
goto next;
|
|
if ((cmd->debounce == 0) ||
|
|
((cmd->debounce == 1) && ((cmd->lastseen == -1) ||
|
|
(cmd->lastseen != val)))) {
|
|
docmd(cmd, val, dev, argc, argv);
|
|
goto next;
|
|
}
|
|
if ((cmd->debounce > 1) &&
|
|
((cmd->lastused == -1) ||
|
|
(abs(cmd->lastused - val) >= cmd->debounce))) {
|
|
docmd(cmd, val, dev, argc, argv);
|
|
cmd->lastused = val;
|
|
goto next;
|
|
}
|
|
next:
|
|
cmd->lastseen = val;
|
|
}
|
|
|
|
if (dieearly)
|
|
exit(0);
|
|
|
|
if (reparse) {
|
|
struct command *cmds =
|
|
parse_conf(conf, repd, reportid, ignore);
|
|
if (cmds) {
|
|
freecommands(commands);
|
|
commands = cmds;
|
|
}
|
|
reparse = 0;
|
|
}
|
|
}
|
|
|
|
exit(0);
|
|
}
|
|
|
|
void
|
|
usage(void)
|
|
{
|
|
|
|
fprintf(stderr, "Usage: %s [-deiv] -c config_file -f hid_dev "
|
|
"[-p pidfile]\n", getprogname());
|
|
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], debounce[SIZE], action[SIZE];
|
|
char usbuf[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 %s %[^\n]",
|
|
name, value, debounce, action) != 4) {
|
|
if (isdemon) {
|
|
syslog(LOG_WARNING, "config file `%s', line %d"
|
|
", syntax error: %s", conf, line, buf);
|
|
freecommands(cmds);
|
|
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 (should be * or a number)\n",
|
|
conf, line, value);
|
|
freecommands(cmds);
|
|
return (NULL);
|
|
} else {
|
|
errx(1, "config file `%s', line %d, "
|
|
"bad value: %s (should be * or a number)\n",
|
|
conf, line, value);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (sscanf(debounce, "%d", &cmd->debounce) != 1) {
|
|
if (isdemon) {
|
|
syslog(LOG_WARNING,
|
|
"config file `%s', line %d, "
|
|
"bad value: %s (should be a number >= 0)\n",
|
|
conf, line, debounce);
|
|
freecommands(cmds);
|
|
return (NULL);
|
|
} else {
|
|
errx(1, "config file `%s', line %d, "
|
|
"bad value: %s (should be a number >= 0)\n",
|
|
conf, line, debounce);
|
|
}
|
|
}
|
|
|
|
coll[0] = 0;
|
|
for (d = hid_start_parse(repd, 1 << hid_input, reportid);
|
|
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(usbuf, sizeof usbuf, "%s:%s",
|
|
hid_usage_page(HID_PAGE(u)),
|
|
hid_usage_in_page(u));
|
|
if (verbose > 2)
|
|
printf("usage %s\n", usbuf);
|
|
if (!strcasecmp(usbuf, name))
|
|
goto foundhid;
|
|
if (coll[0]) {
|
|
snprintf(usbuf, sizeof usbuf,
|
|
"%s.%s:%s", coll+1,
|
|
hid_usage_page(HID_PAGE(u)),
|
|
hid_usage_in_page(u));
|
|
if (verbose > 2)
|
|
printf("usage %s\n",
|
|
usbuf);
|
|
if (!strcasecmp(usbuf, 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;
|
|
}
|
|
}
|
|
if (ignore) {
|
|
if (verbose)
|
|
warnx("ignore item '%s'", name);
|
|
continue;
|
|
}
|
|
if (isdemon) {
|
|
syslog(LOG_WARNING, "config file `%s', line %d, HID "
|
|
"item not found: `%s'\n", conf, line, name);
|
|
freecommands(cmds);
|
|
return (NULL);
|
|
} else {
|
|
errx(1, "config file `%s', line %d, HID item "
|
|
"not found: `%s'\n", conf, line, name);
|
|
}
|
|
|
|
foundhid:
|
|
hid_end_parse(d);
|
|
cmd->lastseen = -1;
|
|
cmd->lastused = -1;
|
|
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;
|
|
|
|
for (p = cmd->action, q = cmdbuf; *p && q < &cmdbuf[SIZE-1]; ) {
|
|
if (*p == '$') {
|
|
p++;
|
|
len = &cmdbuf[SIZE-1] - q;
|
|
if (isdigit(*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;
|
|
|
|
if (verbose)
|
|
printf("system '%s'\n", cmdbuf);
|
|
r = system(cmdbuf);
|
|
if (verbose > 1 && r)
|
|
printf("return code = 0x%x\n", r);
|
|
}
|
|
|
|
void
|
|
freecommands(struct command *cmd)
|
|
{
|
|
struct command *next;
|
|
|
|
while (cmd) {
|
|
next = cmd->next;
|
|
free(cmd);
|
|
cmd = next;
|
|
}
|
|
}
|