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 <unistd.h> 46 #include <err.h> 47 #include <ctype.h> 48 #include <errno.h> 49 #include <usbhid.h> 50 #include <dev/usb/usbhid.h> 51 52 int verbose = 0; 53 int all = 0; 54 int noname = 0; 55 int hexdump = 0; 56 static int reportid; 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 95 fprintf(stderr, 96 "usage: %s -f device " 97 "[-l] [-n] [-r] [-t tablefile] [-v] [-x] name ...\n", 98 getprogname()); 99 fprintf(stderr, 100 " %s -f device " 101 "[-l] [-n] [-r] [-t tablefile] [-v] [-x] -a\n", 102 getprogname()); 103 exit(1); 104 } 105 106 void 107 dumpitem(const char *label, struct hid_item *h) 108 { 109 if ((h->flags & HIO_CONST) && !verbose) 110 return; 111 printf("%s size=%d count=%d page=%s usage=%s%s", label, 112 h->report_size, h->report_count, 113 hid_usage_page(HID_PAGE(h->usage)), 114 hid_usage_in_page(h->usage), 115 h->flags & HIO_CONST ? " Const" : ""); 116 printf(", logical range %d..%d", 117 h->logical_minimum, h->logical_maximum); 118 if (h->physical_minimum != h->physical_maximum) 119 printf(", physical range %d..%d", 120 h->physical_minimum, h->physical_maximum); 121 if (h->unit) 122 printf(", unit=0x%02x exp=%d", h->unit, h->unit_exponent); 123 printf("\n"); 124 } 125 126 void 127 dumpitems(report_desc_t r) 128 { 129 struct hid_data *d; 130 struct hid_item h; 131 int size; 132 133 for (d = hid_start_parse(r, ~0, reportid); hid_get_item(d, &h); ) { 134 switch (h.kind) { 135 case hid_collection: 136 printf("Collection page=%s usage=%s\n", 137 hid_usage_page(HID_PAGE(h.usage)), 138 hid_usage_in_page(h.usage)); 139 break; 140 case hid_endcollection: 141 printf("End collection\n"); 142 break; 143 case hid_input: 144 dumpitem("Input ", &h); 145 break; 146 case hid_output: 147 dumpitem("Output ", &h); 148 break; 149 case hid_feature: 150 dumpitem("Feature", &h); 151 break; 152 } 153 } 154 hid_end_parse(d); 155 size = hid_report_size(r, hid_input, 0); 156 printf("Total input size %d bytes\n", size); 157 158 size = hid_report_size(r, hid_output, 0); 159 printf("Total output size %d bytes\n", size); 160 161 size = hid_report_size(r, hid_feature, 0); 162 printf("Total feature size %d bytes\n", size); 163 } 164 165 void 166 rev(struct hid_item **p) 167 { 168 struct hid_item *cur, *prev, *next; 169 170 prev = 0; 171 cur = *p; 172 while(cur != 0) { 173 next = cur->next; 174 cur->next = prev; 175 prev = cur; 176 cur = next; 177 } 178 *p = prev; 179 } 180 181 void 182 prdata(u_char *buf, struct hid_item *h) 183 { 184 u_int data; 185 int i, pos; 186 187 pos = h->pos; 188 for (i = 0; i < h->report_count; i++) { 189 data = hid_get_data(buf, h); 190 if (h->logical_minimum < 0) 191 printf("%d", (int)data); 192 else 193 printf("%u", data); 194 if (hexdump) 195 printf(" [0x%x]", data); 196 pos += h->report_size; 197 } 198 } 199 200 void 201 dumpdata(int f, report_desc_t rd, int loop) 202 { 203 struct hid_data *d; 204 struct hid_item h, *hids, *n; 205 int r, dlen; 206 u_char *dbuf; 207 u_int32_t colls[100]; 208 int sp = 0; 209 char namebuf[10000], *namep; 210 211 hids = 0; 212 for (d = hid_start_parse(rd, 1<<hid_input, reportid); 213 hid_get_item(d, &h); ) { 214 if (h.kind == hid_collection) 215 colls[++sp] = h.usage; 216 else if (h.kind == hid_endcollection) 217 --sp; 218 if (h.kind != hid_input || (h.flags & HIO_CONST)) 219 continue; 220 h.next = hids; 221 h.collection = colls[sp]; 222 hids = malloc(sizeof *hids); 223 *hids = h; 224 } 225 hid_end_parse(d); 226 rev(&hids); 227 dlen = hid_report_size(rd, hid_input, 0); 228 dbuf = malloc(dlen); 229 if (!loop) 230 if (hid_set_immed(f, 1) < 0) { 231 if (errno == EOPNOTSUPP) 232 warnx("device does not support immediate mode, only changes reported."); 233 else 234 err(1, "USB_SET_IMMED"); 235 } 236 do { 237 r = read(f, dbuf, dlen); 238 if (r != dlen) { 239 err(1, "bad read %d != %d", r, dlen); 240 } 241 for (n = hids; n; n = n->next) { 242 namep = namebuf; 243 namep += sprintf(namep, "%s:%s.", 244 hid_usage_page(HID_PAGE(n->collection)), 245 hid_usage_in_page(n->collection)); 246 namep += sprintf(namep, "%s:%s", 247 hid_usage_page(HID_PAGE(n->usage)), 248 hid_usage_in_page(n->usage)); 249 if (all || gotname(namebuf)) { 250 if (!noname) 251 printf("%s=", namebuf); 252 prdata(dbuf + (reportid != 0), n); 253 printf("\n"); 254 } 255 } 256 if (loop) 257 printf("\n"); 258 } while (loop); 259 free(dbuf); 260 } 261 262 int 263 main(int argc, char **argv) 264 { 265 int f; 266 report_desc_t r; 267 char devnam[100], *dev = 0; 268 int ch; 269 int repdump = 0; 270 int loop = 0; 271 char *table = 0; 272 273 while ((ch = getopt(argc, argv, "af:lnrt:vx")) != -1) { 274 switch(ch) { 275 case 'a': 276 all++; 277 break; 278 case 'f': 279 dev = optarg; 280 break; 281 case 'l': 282 loop ^= 1; 283 break; 284 case 'n': 285 noname++; 286 break; 287 case 'r': 288 repdump++; 289 break; 290 case 't': 291 table = optarg; 292 break; 293 case 'v': 294 verbose++; 295 break; 296 case 'x': 297 hexdump = 1; 298 break; 299 case '?': 300 default: 301 usage(); 302 } 303 } 304 argc -= optind; 305 argv += optind; 306 if (dev == 0) 307 usage(); 308 names = argv; 309 nnames = argc; 310 311 if (nnames == 0 && !all && !repdump) 312 usage(); 313 314 if (dev[0] != '/') { 315 if (isdigit(dev[0])) 316 snprintf(devnam, sizeof(devnam), "/dev/uhid%s", dev); 317 else 318 snprintf(devnam, sizeof(devnam), "/dev/%s", dev); 319 dev = devnam; 320 } 321 322 hid_init(table); 323 324 f = open(dev, O_RDWR); 325 if (f < 0) 326 err(1, "%s", dev); 327 328 r = hid_get_report_desc(f); 329 if (r == 0) 330 errx(1, "USB_GET_REPORT_DESC"); 331 332 if (repdump) { 333 printf("Report descriptor:\n"); 334 dumpitems(r); 335 } 336 if (nnames != 0 || all) 337 dumpdata(f, r, loop); 338 339 hid_dispose_report_desc(r); 340 exit(0); 341 } 342