da6c1373fa
Fix bugs and improve HID parsing. - fix possible memory leak found - fix possible NULL pointer access - fix possible invalid memory read - parsing improvements - reset item data position when a new report ID is detected. Submitted by: Hans Petter Selasky
96 lines
3.2 KiB
C
96 lines
3.2 KiB
C
/* $FreeBSD$ */
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/*-
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* Copyright (c) 2008 Hans Petter Selasky. All rights reserved.
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* Copyright (c) 1998 The NetBSD Foundation, Inc. All rights reserved.
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* Copyright (c) 1998 Lennart Augustsson. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef _USB2_CORE_HID_H_
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#define _USB2_CORE_HID_H_
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struct usb2_hid_descriptor;
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struct usb2_config_descriptor;
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enum hid_kind {
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hid_input, hid_output, hid_feature, hid_collection, hid_endcollection
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};
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struct hid_location {
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uint32_t size;
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uint32_t count;
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uint32_t pos;
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};
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struct hid_item {
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/* Global */
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int32_t _usage_page;
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int32_t logical_minimum;
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int32_t logical_maximum;
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int32_t physical_minimum;
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int32_t physical_maximum;
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int32_t unit_exponent;
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int32_t unit;
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int32_t report_ID;
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/* Local */
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int32_t usage;
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int32_t usage_minimum;
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int32_t usage_maximum;
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int32_t designator_index;
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int32_t designator_minimum;
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int32_t designator_maximum;
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int32_t string_index;
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int32_t string_minimum;
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int32_t string_maximum;
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int32_t set_delimiter;
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/* Misc */
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int32_t collection;
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int collevel;
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enum hid_kind kind;
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uint32_t flags;
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/* Location */
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struct hid_location loc;
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};
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/* prototypes from "usb2_hid.c" */
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struct hid_data *hid_start_parse(const void *d, int len, int kindset);
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void hid_end_parse(struct hid_data *s);
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int hid_get_item(struct hid_data *s, struct hid_item *h);
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int hid_report_size(const void *buf, int len, enum hid_kind k,
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uint8_t *id);
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int hid_locate(const void *desc, int size, uint32_t usage,
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enum hid_kind kind, struct hid_location *loc,
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uint32_t *flags, uint8_t *id);
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uint32_t hid_get_data(const uint8_t *buf, uint32_t len,
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struct hid_location *loc);
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int hid_is_collection(const void *desc, int size, uint32_t usage);
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struct usb2_hid_descriptor *hid_get_descriptor_from_usb(
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struct usb2_config_descriptor *cd,
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struct usb2_interface_descriptor *id);
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usb2_error_t usb2_req_get_hid_desc(struct usb2_device *udev, struct mtx *mtx,
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void **descp, uint16_t *sizep, usb2_malloc_type mem,
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uint8_t iface_index);
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#endif /* _USB2_CORE_HID_H_ */
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