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 <libusbhid.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(const 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(const 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 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, 0, hid_input); 151 printf("Total input size %d bytes\n", size); 152 153 size = hid_report_size(r, 0, hid_output); 154 printf("Total output size %d bytes\n", size); 155 156 size = hid_report_size(r, 0, hid_feature); 157 printf("Total feature size %d bytes\n", size); 158 } 159 160 void 161 rev(struct hid_item **p) 162 { 163 struct hid_item *cur, *prev, *next; 164 165 prev = 0; 166 cur = *p; 167 while(cur != 0) { 168 next = cur->next; 169 cur->next = prev; 170 prev = cur; 171 cur = next; 172 } 173 *p = prev; 174 } 175 176 void 177 prdata(u_char *buf, struct hid_item *h) 178 { 179 u_int data; 180 int i, pos; 181 182 pos = h->pos; 183 for (i = 0; i < h->report_count; i++) { 184 data = hid_get_data(buf, h); 185 if (h->logical_minimum < 0) 186 printf("%d", (int)data); 187 else 188 printf("%u", data); 189 pos += h->report_size; 190 } 191 } 192 193 void 194 dumpdata(int f, report_desc_t rd, int loop) 195 { 196 struct hid_data *d; 197 struct hid_item h, *hids, *n; 198 int r, dlen; 199 u_char *dbuf; 200 static int one = 1; 201 u_int32_t colls[100]; 202 int sp = 0; 203 int report_id; 204 char namebuf[10000], *namep; 205 206 hids = 0; 207 for (d = hid_start_parse(rd, 1<<hid_input); 208 hid_get_item(d, &h); ) { 209 if (h.kind == hid_collection) 210 colls[++sp] = h.usage; 211 else if (h.kind == hid_endcollection) 212 --sp; 213 if (h.kind != hid_input || (h.flags & HIO_CONST)) 214 continue; 215 h.next = hids; 216 h.collection = colls[sp]; 217 hids = malloc(sizeof *hids); 218 *hids = h; 219 } 220 hid_end_parse(d); 221 rev(&hids); 222 dlen = hid_report_size(rd, 0, hid_input); 223 dbuf = malloc(dlen); 224 if (!loop) 225 if (ioctl(f, USB_SET_IMMED, &one) < 0) { 226 if (errno == EOPNOTSUPP) 227 warnx("device does not support immediate mode, only changes reported."); 228 else 229 err(1, "USB_SET_IMMED"); 230 } 231 do { 232 r = read(f, dbuf, dlen); 233 if (r != dlen) { 234 err(1, "bad read %d != %d", r, dlen); 235 } 236 for (n = hids; n; n = n->next) { 237 namep = namebuf; 238 namep += sprintf(namep, "%s:%s.", 239 hid_usage_page(HID_PAGE(n->collection)), 240 hid_usage_in_page(n->collection)); 241 namep += sprintf(namep, "%s:%s", 242 hid_usage_page(HID_PAGE(n->usage)), 243 hid_usage_in_page(n->usage)); 244 if (all || gotname(namebuf)) { 245 if (!noname) 246 printf("%s=", namebuf); 247 prdata(dbuf + (report_id != 0), n); 248 printf("\n"); 249 } 250 } 251 if (loop) 252 printf("\n"); 253 } while (loop); 254 free(dbuf); 255 } 256 257 int 258 main(int argc, char **argv) 259 { 260 int f; 261 report_desc_t r; 262 char devnam[100], *dev = 0; 263 int ch; 264 int repdump = 0; 265 int loop = 0; 266 char *table = 0; 267 268 while ((ch = getopt(argc, argv, "af:lnrt:v")) != -1) { 269 switch(ch) { 270 case 'a': 271 all++; 272 break; 273 case 'f': 274 dev = optarg; 275 break; 276 case 'l': 277 loop ^= 1; 278 break; 279 case 'n': 280 noname++; 281 break; 282 case 'r': 283 repdump++; 284 break; 285 case 't': 286 table = optarg; 287 break; 288 case 'v': 289 verbose++; 290 break; 291 case '?': 292 default: 293 usage(); 294 } 295 } 296 argc -= optind; 297 argv += optind; 298 if (dev == 0) 299 usage(); 300 names = argv; 301 nnames = argc; 302 303 if (nnames == 0 && !all && !repdump) 304 usage(); 305 306 if (dev[0] != '/') { 307 if (isdigit(dev[0])) 308 snprintf(devnam, sizeof(devnam), "/dev/uhid%s", dev); 309 else 310 snprintf(devnam, sizeof(devnam), "/dev/%s", dev); 311 dev = devnam; 312 } 313 314 hid_init(table); 315 316 f = open(dev, O_RDWR); 317 if (f < 0) 318 err(1, "%s", dev); 319 320 r = hid_get_report_desc(f); 321 if (r == 0) 322 errx(1, "USB_GET_REPORT_DESC"); 323 324 if (repdump) { 325 printf("Report descriptor:\n"); 326 dumpitems(r); 327 } 328 if (nnames != 0 || all) 329 dumpdata(f, r, loop); 330 331 hid_dispose_report_desc(r); 332 exit(0); 333 } 334