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1 /*      $NetBSD: usbhid.c,v 1.14 2000/07/03 02:51:37 matt Exp $ */
2 /*      $FreeBSD$ */
3
4 /*
5  * Copyright (c) 1998 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 (augustss@netbsd.org).
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 <sys/types.h>
44 #include <fcntl.h>
45 #include <sys/ioctl.h>
46 #include <unistd.h>
47 #include <err.h>
48 #include <ctype.h>
49 #include <errno.h>
50 #include <libusb.h>
51 #include <dev/usb/usb.h>
52 #include <dev/usb/usbhid.h>
53
54 int verbose = 0;
55 int all = 0;
56 int noname = 0;
57
58 char **names;
59 int nnames;
60
61 void prbits(int bits, char **strs, int n);
62 void usage(void);
63 void dumpitem(char *label, struct hid_item *h);
64 void dumpitems(report_desc_t r);
65 void rev(struct hid_item **p);
66 void prdata(u_char *buf, struct hid_item *h);
67 void dumpdata(int f, report_desc_t r, int loop);
68 int gotname(char *n);
69
70 int
71 gotname(char *n)
72 {
73         int i;
74
75         for (i = 0; i < nnames; i++)
76                 if (strcmp(names[i], n) == 0)
77                         return 1;
78         return 0;
79 }
80
81 void
82 prbits(int bits, char **strs, int n)
83 {
84         int i;
85
86         for(i = 0; i < n; i++, bits >>= 1)
87                 if (strs[i*2])
88                         printf("%s%s", i == 0 ? "" : ", ", strs[i*2 + (bits&1)]);
89 }
90
91 void
92 usage(void)
93 {
94         extern char *__progname;
95
96         fprintf(stderr, "Usage: %s -f device [-l] [-n] [-r] [-t tablefile] [-v] name ...\n", __progname);
97         fprintf(stderr, "       %s -f device [-l] [-n] [-r] [-t tablefile] [-v] -a\n", __progname);
98         exit(1);
99 }
100
101 void
102 dumpitem(char *label, struct hid_item *h)
103 {
104         if ((h->flags & HIO_CONST) && !verbose)
105                 return;
106         printf("%s size=%d count=%d page=%s usage=%s%s", label,
107                h->report_size, h->report_count, 
108                hid_usage_page(HID_PAGE(h->usage)), 
109                hid_usage_in_page(h->usage),
110                h->flags & HIO_CONST ? " Const" : "");
111         printf(", logical range %d..%d",
112                h->logical_minimum, h->logical_maximum);
113         if (h->physical_minimum != h->physical_maximum)
114                 printf(", physical range %d..%d",
115                        h->physical_minimum, h->physical_maximum);
116         if (h->unit)
117                 printf(", unit=0x%02x exp=%d", h->unit, h->unit_exponent);
118         printf("\n");
119 }
120
121 void
122 dumpitems(report_desc_t r)
123 {
124         struct hid_data *d;
125         struct hid_item h;
126         int report_id, size;
127
128         for (d = hid_start_parse(r, ~0); hid_get_item(d, &h); ) {
129                 switch (h.kind) {
130                 case hid_collection:
131                         printf("Collection page=%s usage=%s\n",
132                                hid_usage_page(HID_PAGE(h.usage)), 
133                                hid_usage_in_page(h.usage));
134                         break;
135                 case hid_endcollection:
136                         printf("End collection\n");
137                         break;
138                 case hid_input:
139                         dumpitem("Input  ", &h);
140                         break;
141                 case hid_output:
142                         dumpitem("Output ", &h);
143                         break;
144                 case hid_feature:
145                         dumpitem("Feature", &h);
146                         break;
147                 }
148         }
149         hid_end_parse(d);
150         size = hid_report_size(r, hid_input, &report_id);
151         size -= report_id != 0;
152         printf("Total   input size %s%d bytes\n", 
153                report_id && size ? "1+" : "", size);
154                
155         size = hid_report_size(r, hid_output, &report_id);
156         size -= report_id != 0;
157         printf("Total  output size %s%d bytes\n",
158                report_id && size ? "1+" : "", size);
159
160         size = hid_report_size(r, hid_feature, &report_id);
161         size -= report_id != 0;
162         printf("Total feature size %s%d bytes\n",
163                report_id && size ? "1+" : "", size);
164 }
165
166 void
167 rev(struct hid_item **p)
168 {
169         struct hid_item *cur, *prev, *next;
170
171         prev = 0;
172         cur = *p;
173         while(cur != 0) {
174                 next = cur->next;
175                 cur->next = prev;
176                 prev = cur;
177                 cur = next;
178         }
179         *p = prev;
180 }
181
182 void
183 prdata(u_char *buf, struct hid_item *h)
184 {
185         u_int data;
186         int i, pos;
187
188         pos = h->pos;
189         for (i = 0; i < h->report_count; i++) {
190                 data = hid_get_data(buf, h);
191                 if (h->logical_minimum < 0)
192                         printf("%d", (int)data);
193                 else
194                         printf("%u", data);
195                 pos += h->report_size;
196         }
197 }
198
199 void
200 dumpdata(int f, report_desc_t rd, int loop)
201 {
202         struct hid_data *d;
203         struct hid_item h, *hids, *n;
204         int r, dlen;
205         u_char *dbuf;
206         static int one = 1;
207         u_int32_t colls[100];
208         int sp = 0;
209         int report_id;
210         char namebuf[10000], *namep;
211
212         hids = 0;
213         for (d = hid_start_parse(rd, 1<<hid_input); 
214              hid_get_item(d, &h); ) {
215                 if (h.kind == hid_collection)
216                         colls[++sp] = h.usage;
217                 else if (h.kind == hid_endcollection)
218                         --sp;
219                 if (h.kind != hid_input || (h.flags & HIO_CONST))
220                         continue;
221                 h.next = hids;
222                 h.collection = colls[sp];
223                 hids = malloc(sizeof *hids);
224                 *hids = h;
225         }
226         hid_end_parse(d);
227         rev(&hids);
228         dlen = hid_report_size(rd, hid_input, &report_id);
229         dbuf = malloc(dlen);
230         if (!loop)
231                 if (ioctl(f, USB_SET_IMMED, &one) < 0) {
232                         if (errno == EOPNOTSUPP)
233                                 warnx("device does not support immediate mode, only changes reported.");
234                         else
235                                 err(1, "USB_SET_IMMED");
236                 }
237         do {
238                 r = read(f, dbuf, dlen);
239                 if (r != dlen) {
240                         err(1, "bad read %d != %d", r, dlen);
241                 }
242                 for (n = hids; n; n = n->next) {
243                         namep = namebuf;
244                         namep += sprintf(namep, "%s:%s.",
245                                          hid_usage_page(HID_PAGE(n->collection)),
246                                          hid_usage_in_page(n->collection));
247                         namep += sprintf(namep, "%s:%s",
248                                          hid_usage_page(HID_PAGE(n->usage)),
249                                          hid_usage_in_page(n->usage));
250                         if (all || gotname(namebuf)) {
251                                 if (!noname)
252                                         printf("%s=", namebuf);
253                                 prdata(dbuf + (report_id != 0), n);
254                                 printf("\n");
255                         }
256                 }
257                 if (loop)
258                         printf("\n");
259         } while (loop);
260         free(dbuf);
261 }
262
263 int
264 main(int argc, char **argv)
265 {
266         int f;
267         report_desc_t r;
268         char devname[100], *dev = 0;
269         int ch;
270         int repdump = 0;
271         int loop = 0;
272         char *table = 0;
273
274         while ((ch = getopt(argc, argv, "af:lnrt:v")) != -1) {
275                 switch(ch) {
276                 case 'a':
277                         all++;
278                         break;
279                 case 'f':
280                         dev = optarg;
281                         break;
282                 case 'l':
283                         loop ^= 1;
284                         break;
285                 case 'n':
286                         noname++;
287                         break;
288                 case 'r':
289                         repdump++;
290                         break;
291                 case 't':
292                         table = optarg;
293                         break;
294                 case 'v':
295                         verbose++;
296                         break;
297                 case '?':
298                 default:
299                         usage();
300                 }
301         }
302         argc -= optind;
303         argv += optind;
304         if (dev == 0)
305                 usage();
306         names = argv;
307         nnames = argc;
308
309         if (nnames == 0 && !all && !repdump)
310                 usage();
311
312         if (dev[0] != '/') {
313                 if (isdigit(dev[0]))
314                         sprintf(devname, "/dev/uhid%s", dev);
315                 else
316                         sprintf(devname, "/dev/%s", dev);
317                 dev = devname;
318         }
319
320         hid_init(table);
321
322         f = open(dev, O_RDWR);
323         if (f < 0)
324                 err(1, "%s", dev);
325
326         r = hid_get_report_desc(f);
327         if (r == 0) 
328                 errx(1, "USB_GET_REPORT_DESC");
329                
330         if (repdump) {
331                 printf("Report descriptor:\n");
332                 dumpitems(r);
333         }
334         if (nnames != 0 || all)
335                 dumpdata(f, r, loop);
336
337         hid_dispose_report_desc(r);
338         exit(0);
339 }