043ec21649
Note: bthidd(8) is still not complete. Need to commit kernel support (a-la Linux /dev/input) to feed HID events into kernel. Also need to write bthidd(8) and bthidd.conf(5) man pages.
433 lines
9.4 KiB
C
433 lines
9.4 KiB
C
/*
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* sdp.c
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*
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* Copyright (c) 2004 Maksim Yevmenkin <m_evmenkin@yahoo.com>
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* 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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* $Id: sdp.c,v 1.3 2004/02/17 22:14:57 max Exp $
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* $FreeBSD$
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*/
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#include <sys/queue.h>
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#include <bluetooth.h>
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#include <dev/usb/usb.h>
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#include <dev/usb/usbhid.h>
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#include <errno.h>
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#include <sdp.h>
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#include <stdio.h>
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#include <string.h>
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#include <usbhid.h>
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#include "bthid_config.h"
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#include "bthidcontrol.h"
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static int32_t hid_sdp_query (bdaddr_t const *local, struct hid_device *hd, int32_t *error);
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static int32_t hid_sdp_parse_protocol_descriptor_list (sdp_attr_p a);
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static int32_t hid_sdp_parse_hid_descriptor (sdp_attr_p a);
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static int32_t hid_sdp_parse_boolean (sdp_attr_p a);
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static uint16_t service = SDP_SERVICE_CLASS_HUMAN_INTERFACE_DEVICE;
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static uint32_t attrs[] = {
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SDP_ATTR_RANGE( SDP_ATTR_PROTOCOL_DESCRIPTOR_LIST,
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SDP_ATTR_PROTOCOL_DESCRIPTOR_LIST),
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SDP_ATTR_RANGE (SDP_ATTR_ADDITIONAL_PROTOCOL_DESCRIPTOR_LISTS,
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SDP_ATTR_ADDITIONAL_PROTOCOL_DESCRIPTOR_LISTS),
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SDP_ATTR_RANGE( 0x0205, /* HIDReconnectInitiate */
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0x0206), /* HIDDesctiptorList */
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SDP_ATTR_RANGE( 0x020a, /* HIDBatteryPower */
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0x020a),
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SDP_ATTR_RANGE( 0x020d, /* HIDNormallyConnectable */
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0x020d)
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};
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#define nattrs (sizeof(attrs)/sizeof(attrs[0]))
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static sdp_attr_t values[8];
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#define nvalues (sizeof(values)/sizeof(values[0]))
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static uint8_t buffer[nvalues][512];
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/*
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* Query remote device
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*/
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#undef hid_sdp_query_exit
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#define hid_sdp_query_exit(e) { \
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if (error != NULL) \
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*error = (e); \
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if (ss != NULL) { \
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sdp_close(ss); \
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ss = NULL; \
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} \
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return (((e) == 0)? 0 : -1); \
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}
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static int32_t
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hid_sdp_query(bdaddr_t const *local, struct hid_device *hd, int32_t *error)
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{
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void *ss = NULL;
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uint8_t *hid_descriptor = NULL;
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int32_t i, control_psm = -1, interrupt_psm = -1,
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reconnect_initiate = -1,
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normally_connectable = 0, battery_power = 0,
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hid_descriptor_length = -1;
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if (local == NULL)
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local = NG_HCI_BDADDR_ANY;
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if (hd == NULL)
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hid_sdp_query_exit(EINVAL);
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for (i = 0; i < nvalues; i ++) {
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values[i].flags = SDP_ATTR_INVALID;
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values[i].attr = 0;
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values[i].vlen = sizeof(buffer[i]);
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values[i].value = buffer[i];
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}
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if ((ss = sdp_open(local, &hd->bdaddr)) == NULL)
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hid_sdp_query_exit(ENOMEM);
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if (sdp_error(ss) != 0)
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hid_sdp_query_exit(sdp_error(ss));
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if (sdp_search(ss, 1, &service, nattrs, attrs, nvalues, values) != 0)
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hid_sdp_query_exit(sdp_error(ss));
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sdp_close(ss);
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ss = NULL;
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for (i = 0; i < nvalues; i ++) {
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if (values[i].flags != SDP_ATTR_OK)
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continue;
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switch (values[i].attr) {
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case SDP_ATTR_PROTOCOL_DESCRIPTOR_LIST:
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control_psm = hid_sdp_parse_protocol_descriptor_list(&values[i]);
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break;
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case SDP_ATTR_ADDITIONAL_PROTOCOL_DESCRIPTOR_LISTS:
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interrupt_psm = hid_sdp_parse_protocol_descriptor_list(&values[i]);
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break;
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case 0x0205: /* HIDReconnectInitiate */
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reconnect_initiate = hid_sdp_parse_boolean(&values[i]);
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break;
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case 0x0206: /* HIDDesctiptorList */
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if (hid_sdp_parse_hid_descriptor(&values[i]) == 0) {
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hid_descriptor = values[i].value;
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hid_descriptor_length = values[i].vlen;
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}
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break;
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case 0x020a: /* HIDBatteryPower */
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battery_power = hid_sdp_parse_boolean(&values[i]);
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break;
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case 0x020d: /* HIDNormallyConnectable */
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normally_connectable = hid_sdp_parse_boolean(&values[i]);
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break;
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}
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}
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if (control_psm == -1 || interrupt_psm == -1 ||
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reconnect_initiate == -1 || normally_connectable == -1 ||
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hid_descriptor == NULL || hid_descriptor_length == -1)
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hid_sdp_query_exit(ENOATTR);
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hd->control_psm = control_psm;
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hd->interrupt_psm = interrupt_psm;
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hd->reconnect_initiate = reconnect_initiate? 1 : 0;
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hd->battery_power = battery_power? 1 : 0;
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hd->normally_connectable = normally_connectable? 1 : 0;
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hd->desc = hid_use_report_desc(hid_descriptor, hid_descriptor_length);
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if (hd->desc == NULL)
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hid_sdp_query_exit(ENOMEM);
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return (0);
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}
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/*
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* seq len 2
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* seq len 2
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* uuid value 3
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* uint16 value 3
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* seq len 2
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* uuid value 3
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*/
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static int32_t
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hid_sdp_parse_protocol_descriptor_list(sdp_attr_p a)
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{
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uint8_t *ptr = a->value;
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uint8_t *end = a->value + a->vlen;
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int32_t type, len, uuid, psm;
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if (end - ptr < 15)
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return (-1);
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if (a->attr == SDP_ATTR_ADDITIONAL_PROTOCOL_DESCRIPTOR_LISTS) {
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SDP_GET8(type, ptr);
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switch (type) {
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case SDP_DATA_SEQ8:
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SDP_GET8(len, ptr);
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break;
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case SDP_DATA_SEQ16:
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SDP_GET16(len, ptr);
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break;
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case SDP_DATA_SEQ32:
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SDP_GET32(len, ptr);
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break;
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default:
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return (-1);
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}
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if (ptr + len > end)
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return (-1);
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}
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SDP_GET8(type, ptr);
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switch (type) {
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case SDP_DATA_SEQ8:
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SDP_GET8(len, ptr);
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break;
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case SDP_DATA_SEQ16:
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SDP_GET16(len, ptr);
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break;
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case SDP_DATA_SEQ32:
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SDP_GET32(len, ptr);
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break;
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default:
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return (-1);
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}
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if (ptr + len > end)
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return (-1);
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/* Protocol */
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SDP_GET8(type, ptr);
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switch (type) {
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case SDP_DATA_SEQ8:
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SDP_GET8(len, ptr);
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break;
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case SDP_DATA_SEQ16:
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SDP_GET16(len, ptr);
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break;
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case SDP_DATA_SEQ32:
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SDP_GET32(len, ptr);
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break;
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default:
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return (-1);
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}
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if (ptr + len > end)
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return (-1);
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/* UUID */
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if (ptr + 3 > end)
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return (-1);
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SDP_GET8(type, ptr);
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switch (type) {
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case SDP_DATA_UUID16:
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SDP_GET16(uuid, ptr);
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if (uuid != SDP_UUID_PROTOCOL_L2CAP)
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return (-1);
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break;
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case SDP_DATA_UUID32: /* XXX FIXME can we have 32-bit UUID */
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case SDP_DATA_UUID128: /* XXX FIXME can we have 128-bit UUID */
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default:
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return (-1);
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}
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/* PSM */
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if (ptr + 3 > end)
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return (-1);
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SDP_GET8(type, ptr);
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if (type != SDP_DATA_UINT16)
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return (-1);
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SDP_GET16(psm, ptr);
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return (psm);
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}
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/*
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* seq len 2
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* seq len 2
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* uint8 value8 2
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* str value 3
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*/
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static int32_t
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hid_sdp_parse_hid_descriptor(sdp_attr_p a)
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{
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uint8_t *ptr = a->value;
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uint8_t *end = a->value + a->vlen;
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int32_t type, len, descriptor_type;
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if (end - ptr < 9)
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return (-1);
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SDP_GET8(type, ptr);
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switch (type) {
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case SDP_DATA_SEQ8:
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SDP_GET8(len, ptr);
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break;
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case SDP_DATA_SEQ16:
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SDP_GET16(len, ptr);
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break;
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case SDP_DATA_SEQ32:
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SDP_GET32(len, ptr);
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break;
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default:
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return (-1);
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}
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if (ptr + len > end)
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return (-1);
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while (ptr < end) {
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/* Descriptor */
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SDP_GET8(type, ptr);
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switch (type) {
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case SDP_DATA_SEQ8:
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if (ptr + 1 > end)
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return (-1);
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SDP_GET8(len, ptr);
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break;
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case SDP_DATA_SEQ16:
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if (ptr + 2 > end)
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return (-1);
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SDP_GET16(len, ptr);
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break;
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case SDP_DATA_SEQ32:
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if (ptr + 4 > end)
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return (-1);
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SDP_GET32(len, ptr);
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break;
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default:
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return (-1);
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}
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/* Descripor type */
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if (ptr + 1 > end)
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return (-1);
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SDP_GET8(type, ptr);
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if (type != SDP_DATA_UINT8 || ptr + 1 > end)
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return (-1);
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SDP_GET8(descriptor_type, ptr);
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/* Descriptor value */
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if (ptr + 1 > end)
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return (-1);
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SDP_GET8(type, ptr);
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switch (type) {
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case SDP_DATA_STR8:
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if (ptr + 1 > end)
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return (-1);
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SDP_GET8(len, ptr);
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break;
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case SDP_DATA_STR16:
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if (ptr + 2 > end)
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return (-1);
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SDP_GET16(len, ptr);
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break;
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case SDP_DATA_STR32:
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if (ptr + 4 > end)
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return (-1);
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SDP_GET32(len, ptr);
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break;
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default:
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return (-1);
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}
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if (ptr + len > end)
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return (-1);
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if (descriptor_type == UDESC_REPORT && len > 0) {
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a->value = ptr;
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a->vlen = len;
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return (0);
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}
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ptr += len;
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}
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return (-1);
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}
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/* bool8 int8 */
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static int32_t
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hid_sdp_parse_boolean(sdp_attr_p a)
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{
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if (a->vlen != 2 || a->value[0] != SDP_DATA_BOOL)
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return (-1);
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return (a->value[1]);
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}
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/* Perform SDP query */
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static int32_t
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hid_query(bdaddr_t *bdaddr, int argc, char **argv)
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{
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struct hid_device hd;
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int e;
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memcpy(&hd.bdaddr, bdaddr, sizeof(hd.bdaddr));
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if (hid_sdp_query(NULL, &hd, &e) < 0) {
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fprintf(stderr, "Could not perform SDP query on the " \
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"device %s. %s (%d)\n", bt_ntoa(bdaddr, NULL),
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strerror(e), e);
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return (FAILED);
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}
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print_hid_device(&hd, stdout);
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return (OK);
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}
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struct bthid_command sdp_commands[] =
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{
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{
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"Query",
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"Perform SDP query to the specified device and print HID configuration entry\n"\
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"for the device. The configuration entry should be appended to the Bluetooth\n"\
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"HID daemon configuration file and the daemon should be restarted.\n",
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hid_query
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},
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{ NULL, NULL, NULL }
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};
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