1 /* $OpenBSD: descr.c,v 1.7 2019/06/28 13:32:42 deraadt Exp $ */ 2 /* $NetBSD: descr.c,v 1.2 2002/02/20 20:31:07 christos Exp $ */ 3 4 /* 5 * Copyright (c) 1999 Lennart Augustsson <augustss@netbsd.org> 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 #include <sys/types.h> 31 32 #include <errno.h> 33 #include <stdlib.h> 34 #include <string.h> 35 #include <unistd.h> 36 #include <sys/time.h> 37 38 #include <dev/usb/usb.h> 39 40 #include "usbhid.h" 41 #include "usbvar.h" 42 43 report_desc_t 44 hid_get_report_desc(int fd) 45 { 46 struct usb_ctl_report_desc rep; 47 48 rep.ucrd_size = 0; 49 if (ioctl(fd, USB_GET_REPORT_DESC, &rep) == -1) 50 return (NULL); 51 52 return hid_use_report_desc(rep.ucrd_data, (unsigned int)rep.ucrd_size); 53 } 54 55 report_desc_t 56 hid_use_report_desc(unsigned char *data, unsigned int size) 57 { 58 report_desc_t r; 59 60 r = malloc(sizeof(*r) + size); 61 if (r == NULL) 62 return (NULL); 63 r->size = size; 64 memcpy(r->data, data, size); 65 return (r); 66 } 67 68 void 69 hid_dispose_report_desc(report_desc_t r) 70 { 71 72 free(r); 73 } 74