circuitpython/shared-module/_bleio/ScanEntry.c

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/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2019 Dan Halbert for Adafruit Industries
* Copyright (c) 2018 Artur Pacholec
* Copyright (c) 2017 Glenn Ruben Bakke
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include <string.h>
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#include "shared-bindings/_bleio/Address.h"
#include "shared-module/_bleio/Address.h"
#include "shared-module/_bleio/ScanEntry.h"
mp_obj_t common_hal_bleio_scanentry_get_address(bleio_scanentry_obj_t *self) {
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return MP_OBJ_FROM_PTR(self->address);
}
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mp_obj_t common_hal_bleio_scanentry_get_advertisement_bytes(bleio_scanentry_obj_t *self) {
return MP_OBJ_FROM_PTR(self->data);
}
mp_int_t common_hal_bleio_scanentry_get_rssi(bleio_scanentry_obj_t *self) {
return self->rssi;
}
bool common_hal_bleio_scanentry_get_connectable(bleio_scanentry_obj_t *self) {
return self->connectable;
}
bool common_hal_bleio_scanentry_get_scan_response(bleio_scanentry_obj_t *self) {
return self->scan_response;
}
bool bleio_scanentry_data_matches(const uint8_t* data, size_t len, const uint8_t* prefixes, size_t prefixes_length, bool any) {
if (prefixes_length == 0) {
return true;
}
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if (len == 0) {
// Prefixes exist, but no data.
return false;
}
size_t i = 0;
while(i < prefixes_length) {
uint8_t prefix_length = prefixes[i];
i += 1;
size_t j = 0;
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bool prefix_matched = false;
while (j < len) {
uint8_t structure_length = data[j];
j += 1;
if (structure_length == 0) {
break;
}
if (structure_length >= prefix_length && memcmp(data + j, prefixes + i, prefix_length) == 0) {
if (any) {
return true;
}
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prefix_matched = true;
break;
}
j += structure_length;
}
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// If all (!any), the current prefix must have matched at least one field.
if (!prefix_matched && !any) {
return false;
}
i += prefix_length;
}
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// All prefixes matched some field (if !any), or none did (if any).
return !any;
}
bool common_hal_bleio_scanentry_matches(bleio_scanentry_obj_t *self, const uint8_t* prefixes, size_t prefixes_len, bool all) {
return bleio_scanentry_data_matches(self->data->data, self->data->len, prefixes, prefixes_len, !all);
}