![[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 |
1.20 ! deraadt 1: /* $OpenBSD: usbhidaction.c,v 1.19 2015/01/18 17:18:08 mpi 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: *
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 <util.h>
47: #include <syslog.h>
48: #include <signal.h>
1.15 jasper 49: #include <paths.h>
1.1 nate 50:
51: int verbose = 0;
52: int isdemon = 0;
1.9 deraadt 53:
54: volatile sig_atomic_t reparse = 0;
1.1 nate 55:
56: struct command {
57: struct command *next;
58: int line;
59:
60: struct hid_item item;
61: int value;
62: char anyvalue;
63: char *name;
64: char *action;
65: };
66: struct command *commands;
67:
68: #define SIZE 4000
69:
70: void usage(void);
71: struct command *parse_conf(const char *, report_desc_t, int, int);
72: void docmd(struct command *, int, const char *, int, char **);
73: void freecommands(struct command *);
74:
1.5 deraadt 75: /* ARGSUSED */
1.1 nate 76: static void
1.5 deraadt 77: sighup(int signo)
1.1 nate 78: {
79: reparse = 1;
80: }
81:
82: int
83: main(int argc, char **argv)
84: {
85: const char *conf = NULL;
86: const char *dev = NULL;
87: int fd, ch, sz, n, val, i;
88: int demon, ignore;
89: report_desc_t repd;
90: char buf[100];
91: char devnamebuf[PATH_MAX];
92: struct command *cmd;
93: int reportid;
94:
95: demon = 1;
96: ignore = 0;
97: while ((ch = getopt(argc, argv, "c:df:iv")) != -1) {
98: switch(ch) {
99: case 'c':
100: conf = optarg;
101: break;
102: case 'd':
103: demon ^= 1;
104: break;
105: case 'i':
106: ignore++;
107: break;
108: case 'f':
109: dev = optarg;
110: break;
111: case 'v':
112: demon = 0;
113: verbose++;
114: break;
115: case '?':
116: default:
117: usage();
118: }
119: }
120: argc -= optind;
121: argv += optind;
122:
123: if (conf == NULL || dev == NULL)
124: usage();
125:
1.4 deraadt 126: if (hid_start(NULL) == -1)
127: errx(1, "hid_init");
1.1 nate 128:
129: if (dev[0] != '/') {
130: snprintf(devnamebuf, sizeof(devnamebuf), "/dev/%s%s",
1.17 deraadt 131: isdigit((unsigned char)dev[0]) ? "uhid" : "", dev);
1.1 nate 132: dev = devnamebuf;
133: }
1.8 mk 134:
135: if (demon && conf[0] != '/')
136: errx(1, "config file must have an absolute path, %s", conf);
1.1 nate 137:
1.18 guenther 138: fd = open(dev, O_RDWR | O_CLOEXEC);
1.1 nate 139: if (fd < 0)
140: err(1, "%s", dev);
1.7 fgsch 141:
1.1 nate 142: if (ioctl(fd, USB_GET_REPORT_ID, &reportid) < 0)
143: reportid = -1;
144: repd = hid_get_report_desc(fd);
145: if (repd == NULL)
1.2 jsyn 146: err(1, "hid_get_report_desc() failed");
1.1 nate 147:
148: commands = parse_conf(conf, repd, reportid, ignore);
149:
150: sz = hid_report_size(repd, hid_input, reportid);
151:
152: if (verbose)
153: printf("report size %d\n", sz);
154: if (sz > sizeof buf)
155: errx(1, "report too large");
156:
157: (void)signal(SIGHUP, sighup);
1.16 robert 158:
159: /* we do not care about the children, so ignore them */
160: (void)signal(SIGCHLD, SIG_IGN);
1.1 nate 161:
162: if (demon) {
163: if (daemon(0, 0) < 0)
164: err(1, "daemon()");
165: isdemon = 1;
166: }
167:
168: for(;;) {
169: n = read(fd, buf, sz);
170: if (verbose > 2) {
171: printf("read %d bytes:", n);
172: for (i = 0; i < n; i++)
173: printf(" %02x", buf[i]);
174: printf("\n");
175: }
176: if (n < 0) {
177: if (verbose)
178: err(1, "read");
179: else
180: exit(1);
181: }
182: if (n != sz) {
183: err(2, "read size");
184: }
185: for (cmd = commands; cmd; cmd = cmd->next) {
186: val = hid_get_data(buf, &cmd->item);
187: if (cmd->value == val || cmd->anyvalue)
188: docmd(cmd, val, dev, argc, argv);
189: }
190: if (reparse) {
191: struct command *cmds =
192: parse_conf(conf, repd, reportid, ignore);
193: if (cmds) {
194: freecommands(commands);
195: commands = cmds;
196: }
197: reparse = 0;
198: }
199: }
200:
201: exit(0);
202: }
203:
204: void
205: usage(void)
206: {
207: extern char *__progname;
208:
1.12 sobrado 209: fprintf(stderr, "usage: %s [-div] -c config-file -f device arg ...\n",
210: __progname);
1.1 nate 211: exit(1);
212: }
213:
214: static int
215: peek(FILE *f)
216: {
217: int c;
218:
219: c = getc(f);
220: if (c != EOF)
221: ungetc(c, f);
222: return c;
223: }
224:
225: struct command *
226: parse_conf(const char *conf, report_desc_t repd, int reportid, int ignore)
227: {
228: FILE *f;
229: char *p;
230: int line;
231: char buf[SIZE], name[SIZE], value[SIZE], action[SIZE];
232: char usage[SIZE], coll[SIZE];
233: struct command *cmd, *cmds;
234: struct hid_data *d;
235: struct hid_item h;
236: int u, lo, hi, range;
237:
238: f = fopen(conf, "r");
239: if (f == NULL)
240: err(1, "%s", conf);
241:
242: cmds = NULL;
243: for (line = 1; ; line++) {
244: if (fgets(buf, sizeof buf, f) == NULL)
245: break;
246: if (buf[0] == '#' || buf[0] == '\n')
247: continue;
248: p = strchr(buf, '\n');
249: while (p && isspace(peek(f))) {
250: if (fgets(p, sizeof buf - strlen(buf), f) == NULL)
251: break;
252: p = strchr(buf, '\n');
253: }
254: if (p)
255: *p = 0;
256: if (sscanf(buf, "%s %s %[^\n]", name, value, action) != 3) {
257: if (isdemon) {
258: syslog(LOG_WARNING, "config file `%s', line %d"
1.4 deraadt 259: ", syntax error: %s", conf, line, buf);
1.1 nate 260: freecommands(cmds);
1.11 guenther 261: fclose(f);
1.1 nate 262: return (NULL);
263: } else {
1.6 jaredy 264: errx(1, "config file `%s', line %d"
1.4 deraadt 265: ", syntax error: %s", conf, line, buf);
1.1 nate 266: }
267: }
268:
269: cmd = malloc(sizeof *cmd);
270: if (cmd == NULL)
271: err(1, "malloc failed");
272: cmd->next = cmds;
273: cmds = cmd;
274: cmd->line = line;
275:
276: if (strcmp(value, "*") == 0) {
277: cmd->anyvalue = 1;
278: } else {
279: cmd->anyvalue = 0;
280: if (sscanf(value, "%d", &cmd->value) != 1) {
281: if (isdemon) {
282: syslog(LOG_WARNING,
1.4 deraadt 283: "config file `%s', line %d, "
1.6 jaredy 284: "bad value: %s",
1.4 deraadt 285: conf, line, value);
1.1 nate 286: freecommands(cmds);
1.11 guenther 287: fclose(f);
1.1 nate 288: return (NULL);
289: } else {
290: errx(1, "config file `%s', line %d, "
1.6 jaredy 291: "bad value: %s",
1.4 deraadt 292: conf, line, value);
1.1 nate 293: }
294: }
295: }
296:
297: coll[0] = 0;
1.11 guenther 298: d = hid_start_parse(repd, 1 << hid_input, reportid);
299: if (d == NULL)
300: err(1, "hid_start_parse failed");
301: while (hid_get_item(d, &h)) {
1.1 nate 302: if (verbose > 2)
303: printf("kind=%d usage=%x\n", h.kind, h.usage);
304: if (h.flags & HIO_CONST)
305: continue;
306: switch (h.kind) {
307: case hid_input:
308: if (h.usage_minimum != 0 ||
309: h.usage_maximum != 0) {
310: lo = h.usage_minimum;
311: hi = h.usage_maximum;
312: range = 1;
313: } else {
314: lo = h.usage;
315: hi = h.usage;
316: range = 0;
317: }
318: for (u = lo; u <= hi; u++) {
319: snprintf(usage, sizeof usage, "%s:%s",
1.4 deraadt 320: hid_usage_page(HID_PAGE(u)),
1.1 nate 321: hid_usage_in_page(u));
322: if (verbose > 2)
323: printf("usage %s\n", usage);
324: if (!strcasecmp(usage, name))
325: goto foundhid;
326: if (coll[0]) {
327: snprintf(usage, sizeof usage,
328: "%s.%s:%s", coll+1,
1.4 deraadt 329: hid_usage_page(HID_PAGE(u)),
1.1 nate 330: hid_usage_in_page(u));
331: if (verbose > 2)
332: printf("usage %s\n",
1.4 deraadt 333: usage);
1.1 nate 334: if (!strcasecmp(usage, name))
335: goto foundhid;
336: }
337: }
338: break;
339: case hid_collection:
340: snprintf(coll + strlen(coll),
341: sizeof coll - strlen(coll), ".%s:%s",
1.4 deraadt 342: hid_usage_page(HID_PAGE(h.usage)),
1.1 nate 343: hid_usage_in_page(h.usage));
344: break;
345: case hid_endcollection:
346: if (coll[0])
347: *strrchr(coll, '.') = 0;
348: break;
349: default:
350: break;
351: }
352: }
1.11 guenther 353: hid_end_parse(d);
1.1 nate 354: if (ignore) {
355: if (verbose)
1.2 jsyn 356: warnx("ignore item '%s'", name);
1.11 guenther 357: /* pop and free this ignored item */
358: cmds = cmd->next;
359: free(cmd);
1.1 nate 360: continue;
361: }
362: if (isdemon) {
363: syslog(LOG_WARNING, "config file `%s', line %d, HID "
1.6 jaredy 364: "item not found: `%s'", conf, line, name);
1.1 nate 365: freecommands(cmds);
1.11 guenther 366: fclose(f);
1.1 nate 367: return (NULL);
368: } else {
369: errx(1, "config file `%s', line %d, HID item "
1.6 jaredy 370: "not found: `%s'", conf, line, name);
1.1 nate 371: }
372:
373: foundhid:
374: hid_end_parse(d);
375: cmd->item = h;
376: cmd->name = strdup(name);
377: cmd->action = strdup(action);
378: if (range) {
379: if (cmd->value == 1)
380: cmd->value = u - lo;
381: else
382: cmd->value = -1;
383: }
384:
385: if (verbose)
386: printf("PARSE:%d %s, %d, '%s'\n", cmd->line, name,
1.4 deraadt 387: cmd->value, cmd->action);
1.1 nate 388: }
389: fclose(f);
390: return (cmds);
391: }
392:
393: void
394: docmd(struct command *cmd, int value, const char *hid, int argc, char **argv)
395: {
396: char cmdbuf[SIZE], *p, *q;
397: size_t len;
398: int n, r;
1.15 jasper 399: pid_t pid;
1.1 nate 400:
1.14 deraadt 401: if (cmd->action == NULL) {
1.13 ckuethe 402: if (verbose)
403: printf("no action for device %s value %d\n",
1.14 deraadt 404: hid, value);
1.13 ckuethe 405: return;
406: }
1.1 nate 407: for (p = cmd->action, q = cmdbuf; *p && q < &cmdbuf[SIZE-1]; ) {
408: if (*p == '$') {
409: p++;
410: len = &cmdbuf[SIZE-1] - q;
1.17 deraadt 411: if (isdigit((unsigned char)*p)) {
1.1 nate 412: n = strtol(p, &p, 10) - 1;
413: if (n >= 0 && n < argc) {
414: strncpy(q, argv[n], len);
415: q += strlen(q);
416: }
417: } else if (*p == 'V') {
418: p++;
419: snprintf(q, len, "%d", value);
420: q += strlen(q);
421: } else if (*p == 'N') {
422: p++;
423: strncpy(q, cmd->name, len);
424: q += strlen(q);
425: } else if (*p == 'H') {
426: p++;
427: strncpy(q, hid, len);
428: q += strlen(q);
429: } else if (*p) {
430: *q++ = *p++;
431: }
432: } else {
433: *q++ = *p++;
434: }
435: }
436: *q = 0;
437:
1.15 jasper 438: pid = fork();
439: if (pid == -1)
440: warn("fork failed");
441: else if (pid == 0) {
442: setpgid(0, 0);
443: if (verbose)
444: printf("executing '%s'\n", cmdbuf);
445: r = execl(_PATH_BSHELL, "sh", "-c", cmdbuf, NULL);
446: err(1, "execl");
447: }
1.1 nate 448: }
449:
450: void
451: freecommands(struct command *cmd)
452: {
453: struct command *next;
454:
455: while (cmd) {
456: next = cmd->next;
457: free(cmd);
458: cmd = next;
459: }
460: }