![[BACK]](/icons/back.gif){kind=icon}
Return to usbhidaction.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / src / usr.bin / usbhidaction|
Return to usbhidaction.c CVS log | Up to [local] / src / usr.bin / usbhidaction |
1.9 ! deraadt 1: /* $OpenBSD: usbhidaction.c,v 1.8 2006/07/09 23:02:21 mk Exp $ */
1.1 nate 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: * 3. All advertising materials mentioning features or use of this software
20: * must display the following acknowledgement:
21: * This product includes software developed by the NetBSD
22: * Foundation, Inc. and its contributors.
23: * 4. Neither the name of The NetBSD Foundation nor the names of its
24: * contributors may be used to endorse or promote products derived
25: * from this software without specific prior written permission.
26: *
27: * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
28: * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
29: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
30: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
31: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
32: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
33: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
34: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
35: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
36: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
37: * POSSIBILITY OF SUCH DAMAGE.
38: */
39:
40: #include <stdio.h>
41: #include <stdlib.h>
42: #include <string.h>
43: #include <ctype.h>
44: #include <err.h>
45: #include <fcntl.h>
46: #include <limits.h>
47: #include <unistd.h>
48: #include <sys/types.h>
49: #include <sys/ioctl.h>
50: #include <dev/usb/usb.h>
51: #include <dev/usb/usbhid.h>
52: #include <usbhid.h>
53: #include <util.h>
54: #include <syslog.h>
55: #include <signal.h>
56:
57: int verbose = 0;
58: int isdemon = 0;
1.9 ! deraadt 59:
! 60: volatile sig_atomic_t reparse = 0;
1.1 nate 61:
62: struct command {
63: struct command *next;
64: int line;
65:
66: struct hid_item item;
67: int value;
68: char anyvalue;
69: char *name;
70: char *action;
71: };
72: struct command *commands;
73:
74: #define SIZE 4000
75:
76: void usage(void);
77: struct command *parse_conf(const char *, report_desc_t, int, int);
78: void docmd(struct command *, int, const char *, int, char **);
79: void freecommands(struct command *);
80:
1.5 deraadt 81: /* ARGSUSED */
1.1 nate 82: static void
1.5 deraadt 83: sighup(int signo)
1.1 nate 84: {
85: reparse = 1;
86: }
87:
88: int
89: main(int argc, char **argv)
90: {
91: const char *conf = NULL;
92: const char *dev = NULL;
93: int fd, ch, sz, n, val, i;
94: int demon, ignore;
95: report_desc_t repd;
96: char buf[100];
97: char devnamebuf[PATH_MAX];
98: struct command *cmd;
99: int reportid;
100:
101: demon = 1;
102: ignore = 0;
103: while ((ch = getopt(argc, argv, "c:df:iv")) != -1) {
104: switch(ch) {
105: case 'c':
106: conf = optarg;
107: break;
108: case 'd':
109: demon ^= 1;
110: break;
111: case 'i':
112: ignore++;
113: break;
114: case 'f':
115: dev = optarg;
116: break;
117: case 'v':
118: demon = 0;
119: verbose++;
120: break;
121: case '?':
122: default:
123: usage();
124: }
125: }
126: argc -= optind;
127: argv += optind;
128:
129: if (conf == NULL || dev == NULL)
130: usage();
131:
1.4 deraadt 132: if (hid_start(NULL) == -1)
133: errx(1, "hid_init");
1.1 nate 134:
135: if (dev[0] != '/') {
136: snprintf(devnamebuf, sizeof(devnamebuf), "/dev/%s%s",
1.4 deraadt 137: isdigit(dev[0]) ? "uhid" : "", dev);
1.1 nate 138: dev = devnamebuf;
139: }
1.8 mk 140:
141: if (demon && conf[0] != '/')
142: errx(1, "config file must have an absolute path, %s", conf);
1.1 nate 143:
144: fd = open(dev, O_RDWR);
145: if (fd < 0)
146: err(1, "%s", dev);
1.7 fgsch 147:
148: /* Avoid passing the device file descriptor to executed commands */
149: if (fcntl(fd, F_SETFD, FD_CLOEXEC) == -1)
150: err(1, "fcntl(F_SETFD, FD_CLOEXEC)");
151:
1.1 nate 152: if (ioctl(fd, USB_GET_REPORT_ID, &reportid) < 0)
153: reportid = -1;
154: repd = hid_get_report_desc(fd);
155: if (repd == NULL)
1.2 jsyn 156: err(1, "hid_get_report_desc() failed");
1.1 nate 157:
158: commands = parse_conf(conf, repd, reportid, ignore);
159:
160: sz = hid_report_size(repd, hid_input, reportid);
161:
162: if (verbose)
163: printf("report size %d\n", sz);
164: if (sz > sizeof buf)
165: errx(1, "report too large");
166:
167: (void)signal(SIGHUP, sighup);
168:
169: if (demon) {
170: if (daemon(0, 0) < 0)
171: err(1, "daemon()");
172: pidfile(NULL);
173: isdemon = 1;
174: }
175:
176: for(;;) {
177: n = read(fd, buf, sz);
178: if (verbose > 2) {
179: printf("read %d bytes:", n);
180: for (i = 0; i < n; i++)
181: printf(" %02x", buf[i]);
182: printf("\n");
183: }
184: if (n < 0) {
185: if (verbose)
186: err(1, "read");
187: else
188: exit(1);
189: }
190: #if 0
191: if (n != sz) {
192: err(2, "read size");
193: }
194: #endif
195: for (cmd = commands; cmd; cmd = cmd->next) {
196: val = hid_get_data(buf, &cmd->item);
197: if (cmd->value == val || cmd->anyvalue)
198: docmd(cmd, val, dev, argc, argv);
199: }
200: if (reparse) {
201: struct command *cmds =
202: parse_conf(conf, repd, reportid, ignore);
203: if (cmds) {
204: freecommands(commands);
205: commands = cmds;
206: }
207: reparse = 0;
208: }
209: }
210:
211: exit(0);
212: }
213:
214: void
215: usage(void)
216: {
217: extern char *__progname;
218:
1.3 jmc 219: fprintf(stderr, "Usage: %s [-div] -c config-file -f device "
220: "arg ...\n", __progname);
1.1 nate 221: exit(1);
222: }
223:
224: static int
225: peek(FILE *f)
226: {
227: int c;
228:
229: c = getc(f);
230: if (c != EOF)
231: ungetc(c, f);
232: return c;
233: }
234:
235: struct command *
236: parse_conf(const char *conf, report_desc_t repd, int reportid, int ignore)
237: {
238: FILE *f;
239: char *p;
240: int line;
241: char buf[SIZE], name[SIZE], value[SIZE], action[SIZE];
242: char usage[SIZE], coll[SIZE];
243: struct command *cmd, *cmds;
244: struct hid_data *d;
245: struct hid_item h;
246: int u, lo, hi, range;
247:
248: f = fopen(conf, "r");
249: if (f == NULL)
250: err(1, "%s", conf);
251:
252: cmds = NULL;
253: for (line = 1; ; line++) {
254: if (fgets(buf, sizeof buf, f) == NULL)
255: break;
256: if (buf[0] == '#' || buf[0] == '\n')
257: continue;
258: p = strchr(buf, '\n');
259: while (p && isspace(peek(f))) {
260: if (fgets(p, sizeof buf - strlen(buf), f) == NULL)
261: break;
262: p = strchr(buf, '\n');
263: }
264: if (p)
265: *p = 0;
266: if (sscanf(buf, "%s %s %[^\n]", name, value, action) != 3) {
267: if (isdemon) {
268: syslog(LOG_WARNING, "config file `%s', line %d"
1.4 deraadt 269: ", syntax error: %s", conf, line, buf);
1.1 nate 270: freecommands(cmds);
271: return (NULL);
272: } else {
1.6 jaredy 273: errx(1, "config file `%s', line %d"
1.4 deraadt 274: ", syntax error: %s", conf, line, buf);
1.1 nate 275: }
276: }
277:
278: cmd = malloc(sizeof *cmd);
279: if (cmd == NULL)
280: err(1, "malloc failed");
281: cmd->next = cmds;
282: cmds = cmd;
283: cmd->line = line;
284:
285: if (strcmp(value, "*") == 0) {
286: cmd->anyvalue = 1;
287: } else {
288: cmd->anyvalue = 0;
289: if (sscanf(value, "%d", &cmd->value) != 1) {
290: if (isdemon) {
291: syslog(LOG_WARNING,
1.4 deraadt 292: "config file `%s', line %d, "
1.6 jaredy 293: "bad value: %s",
1.4 deraadt 294: conf, line, value);
1.1 nate 295: freecommands(cmds);
296: return (NULL);
297: } else {
298: errx(1, "config file `%s', line %d, "
1.6 jaredy 299: "bad value: %s",
1.4 deraadt 300: conf, line, value);
1.1 nate 301: }
302: }
303: }
304:
305: coll[0] = 0;
306: for (d = hid_start_parse(repd, 1 << hid_input, reportid);
1.4 deraadt 307: hid_get_item(d, &h); ) {
1.1 nate 308: if (verbose > 2)
309: printf("kind=%d usage=%x\n", h.kind, h.usage);
310: if (h.flags & HIO_CONST)
311: continue;
312: switch (h.kind) {
313: case hid_input:
314: if (h.usage_minimum != 0 ||
315: h.usage_maximum != 0) {
316: lo = h.usage_minimum;
317: hi = h.usage_maximum;
318: range = 1;
319: } else {
320: lo = h.usage;
321: hi = h.usage;
322: range = 0;
323: }
324: for (u = lo; u <= hi; u++) {
325: snprintf(usage, sizeof usage, "%s:%s",
1.4 deraadt 326: hid_usage_page(HID_PAGE(u)),
1.1 nate 327: hid_usage_in_page(u));
328: if (verbose > 2)
329: printf("usage %s\n", usage);
330: if (!strcasecmp(usage, name))
331: goto foundhid;
332: if (coll[0]) {
333: snprintf(usage, sizeof usage,
334: "%s.%s:%s", coll+1,
1.4 deraadt 335: hid_usage_page(HID_PAGE(u)),
1.1 nate 336: hid_usage_in_page(u));
337: if (verbose > 2)
338: printf("usage %s\n",
1.4 deraadt 339: usage);
1.1 nate 340: if (!strcasecmp(usage, name))
341: goto foundhid;
342: }
343: }
344: break;
345: case hid_collection:
346: snprintf(coll + strlen(coll),
347: sizeof coll - strlen(coll), ".%s:%s",
1.4 deraadt 348: hid_usage_page(HID_PAGE(h.usage)),
1.1 nate 349: hid_usage_in_page(h.usage));
350: break;
351: case hid_endcollection:
352: if (coll[0])
353: *strrchr(coll, '.') = 0;
354: break;
355: default:
356: break;
357: }
358: }
359: if (ignore) {
360: if (verbose)
1.2 jsyn 361: warnx("ignore item '%s'", name);
1.1 nate 362: continue;
363: }
364: if (isdemon) {
365: syslog(LOG_WARNING, "config file `%s', line %d, HID "
1.6 jaredy 366: "item not found: `%s'", conf, line, name);
1.1 nate 367: freecommands(cmds);
368: return (NULL);
369: } else {
370: errx(1, "config file `%s', line %d, HID item "
1.6 jaredy 371: "not found: `%s'", conf, line, name);
1.1 nate 372: }
373:
374: foundhid:
375: hid_end_parse(d);
376: cmd->item = h;
377: cmd->name = strdup(name);
378: cmd->action = strdup(action);
379: if (range) {
380: if (cmd->value == 1)
381: cmd->value = u - lo;
382: else
383: cmd->value = -1;
384: }
385:
386: if (verbose)
387: printf("PARSE:%d %s, %d, '%s'\n", cmd->line, name,
1.4 deraadt 388: cmd->value, cmd->action);
1.1 nate 389: }
390: fclose(f);
391: return (cmds);
392: }
393:
394: void
395: docmd(struct command *cmd, int value, const char *hid, int argc, char **argv)
396: {
397: char cmdbuf[SIZE], *p, *q;
398: size_t len;
399: int n, r;
400:
401: for (p = cmd->action, q = cmdbuf; *p && q < &cmdbuf[SIZE-1]; ) {
402: if (*p == '$') {
403: p++;
404: len = &cmdbuf[SIZE-1] - q;
405: if (isdigit(*p)) {
406: n = strtol(p, &p, 10) - 1;
407: if (n >= 0 && n < argc) {
408: strncpy(q, argv[n], len);
409: q += strlen(q);
410: }
411: } else if (*p == 'V') {
412: p++;
413: snprintf(q, len, "%d", value);
414: q += strlen(q);
415: } else if (*p == 'N') {
416: p++;
417: strncpy(q, cmd->name, len);
418: q += strlen(q);
419: } else if (*p == 'H') {
420: p++;
421: strncpy(q, hid, len);
422: q += strlen(q);
423: } else if (*p) {
424: *q++ = *p++;
425: }
426: } else {
427: *q++ = *p++;
428: }
429: }
430: *q = 0;
431:
432: if (verbose)
433: printf("system '%s'\n", cmdbuf);
434: r = system(cmdbuf);
435: if (verbose > 1 && r)
436: printf("return code = 0x%x\n", r);
437: }
438:
439: void
440: freecommands(struct command *cmd)
441: {
442: struct command *next;
443:
444: while (cmd) {
445: next = cmd->next;
446: free(cmd);
447: cmd = next;
448: }
449: }