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/******************************************************************************
*
* Copyright (C) 2015 Google, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
******************************************************************************/
#define LOG_TAG "bt_device_interop"
#include <assert.h>
#include <string.h> // For memcmp
#include "btcore/include/module.h"
#include "device/include/interop.h"
#include "device/include/interop_database.h"
#include "osi/include/allocator.h"
#include "osi/include/list.h"
#include "osi/include/log.h"
#define CASE_RETURN_STR(const) case const: return #const;
static list_t *interop_list = NULL;
static const char* interop_feature_string_(const interop_feature_t feature);
static void interop_free_entry_(void *data);
static void interop_lazy_init_(void);
static bool interop_match_fixed_(const interop_feature_t feature, const bt_bdaddr_t *addr);
static bool interop_match_dynamic_(const interop_feature_t feature, const bt_bdaddr_t *addr);
// Interface functions
bool interop_match_addr(const interop_feature_t feature, const bt_bdaddr_t *addr) {
assert(addr);
if (interop_match_fixed_(feature, addr) || interop_match_dynamic_(feature, addr)) {
char bdstr[20] = {0};
LOG_WARN(LOG_TAG, "%s() Device %s is a match for interop workaround %s.",
__func__, bdaddr_to_string(addr, bdstr, sizeof(bdstr)),
interop_feature_string_(feature));
return true;
}
return false;
}
bool interop_match_name(const interop_feature_t feature, const char *name) {
assert(name);
const size_t db_size = sizeof(interop_name_database) / sizeof(interop_name_entry_t);
for (size_t i = 0; i != db_size; ++i) {
if (feature == interop_name_database[i].feature &&
strlen(name) >= interop_name_database[i].length &&
strncmp(name, interop_name_database[i].name, interop_name_database[i].length) == 0) {
LOG_WARN(LOG_TAG, "%s() Device with name: %s is a match for interop workaround %s", __func__,
name, interop_feature_string_(feature));
return true;
}
}
return false;
}
bool interop_match_manufacturer(const interop_feature_t feature, uint16_t manufacturer) {
const size_t db_size = sizeof(interop_manufacturer_database) / sizeof(interop_manufacturer_t);
for (size_t i = 0; i != db_size; ++i) {
if (feature == interop_manufacturer_database[i].feature &&
manufacturer == interop_manufacturer_database[i].manufacturer) {
LOG_WARN(LOG_TAG, "%s() Device with manufacturer id: %d is a match for interop "
"workaround %s", __func__, manufacturer, interop_feature_string_(feature));
return true;
}
}
return false;
}
bool interop_match_vendor_product_ids(const interop_feature_t feature,
uint16_t vendor_id, uint16_t product_id) {
const size_t db_size = sizeof(interop_hid_multitouch_database) / sizeof(interop_hid_multitouch_t);
for (size_t i = 0; i != db_size; ++i) {
if (vendor_id == interop_hid_multitouch_database[i].vendor_id &&
product_id == interop_hid_multitouch_database[i].product_id) {
LOG_WARN(LOG_TAG, "%s() Device with vendor_id: %d product_id: %d is a match for "
"interop workaround %s", __func__, vendor_id, product_id,
interop_feature_string_(feature));
return true;
}
}
return false;
}
void interop_database_add(const uint16_t feature, const bt_bdaddr_t *addr, size_t length) {
assert(addr);
assert(length > 0);
assert(length < sizeof(bt_bdaddr_t));
interop_addr_entry_t *entry = osi_calloc(sizeof(interop_addr_entry_t));
memcpy(&entry->addr, addr, length);
entry->feature = feature;
entry->length = length;
interop_lazy_init_();
list_append(interop_list, entry);
}
void interop_database_clear() {
if (interop_list)
list_clear(interop_list);
}
// Module life-cycle functions
static future_t *interop_clean_up(void) {
list_free(interop_list);
interop_list = NULL;
return future_new_immediate(FUTURE_SUCCESS);
}
EXPORT_SYMBOL module_t interop_module = {
.name = INTEROP_MODULE,
.init = NULL,
.start_up = NULL,
.shut_down = NULL,
.clean_up = interop_clean_up,
.dependencies = {NULL},
};
// Local functions
static const char* interop_feature_string_(const interop_feature_t feature) {
switch (feature) {
CASE_RETURN_STR(INTEROP_DISABLE_LE_SECURE_CONNECTIONS)
CASE_RETURN_STR(INTEROP_AUTO_RETRY_PAIRING)
CASE_RETURN_STR(INTEROP_DISABLE_ABSOLUTE_VOLUME)
CASE_RETURN_STR(INTEROP_DISABLE_AUTO_PAIRING)
CASE_RETURN_STR(INTEROP_KEYBOARD_REQUIRES_FIXED_PIN)
CASE_RETURN_STR(INTEROP_2MBPS_LINK_ONLY)
CASE_RETURN_STR(INTEROP_DISABLE_SDP_AFTER_PAIRING)
CASE_RETURN_STR(INTEROP_DISABLE_AUTH_FOR_HID_POINTING)
CASE_RETURN_STR(INTEROP_REMOVE_HID_DIG_DESCRIPTOR)
CASE_RETURN_STR(INTEROP_DISABLE_SNIFF_DURING_SCO)
CASE_RETURN_STR(INTEROP_INCREASE_AG_CONN_TIMEOUT)
CASE_RETURN_STR(INTEROP_DISABLE_LE_CONN_PREFERRED_PARAMS)
CASE_RETURN_STR(INTEROP_ADV_AVRCP_VER_1_3)
}
return "UNKNOWN";
}
static void interop_free_entry_(void *data) {
interop_addr_entry_t *entry = (interop_addr_entry_t *)data;
osi_free(entry);
}
static void interop_lazy_init_(void) {
if (interop_list == NULL) {
interop_list = list_new(interop_free_entry_);
}
}
static bool interop_match_dynamic_(const interop_feature_t feature, const bt_bdaddr_t *addr) {
if (interop_list == NULL || list_length(interop_list) == 0)
return false;
const list_node_t *node = list_begin(interop_list);
while (node != list_end(interop_list)) {
interop_addr_entry_t *entry = list_node(node);
assert(entry);
if (feature == entry->feature && memcmp(addr, &entry->addr, entry->length) == 0)
return true;
node = list_next(node);
}
return false;
}
static bool interop_match_fixed_(const interop_feature_t feature, const bt_bdaddr_t *addr) {
assert(addr);
const size_t db_size = sizeof(interop_addr_database) / sizeof(interop_addr_entry_t);
for (size_t i = 0; i != db_size; ++i) {
if (feature == interop_addr_database[i].feature &&
memcmp(addr, &interop_addr_database[i].addr, interop_addr_database[i].length) == 0) {
return true;
}
}
return false;
}
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