forked from forks/qmk_firmware
88 lines
2 KiB
C
88 lines
2 KiB
C
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// Copyright 2022 QMK
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// SPDX-License-Identifier: GPL-2.0-or-later
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#include "secure.h"
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#include "timer.h"
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#ifndef SECURE_UNLOCK_TIMEOUT
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# define SECURE_UNLOCK_TIMEOUT 5000
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#endif
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#ifndef SECURE_IDLE_TIMEOUT
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# define SECURE_IDLE_TIMEOUT 60000
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#endif
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#ifndef SECURE_UNLOCK_SEQUENCE
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# define SECURE_UNLOCK_SEQUENCE \
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{ \
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{ 0, 0 } \
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}
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#endif
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static secure_status_t secure_status = SECURE_LOCKED;
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static uint32_t unlock_time = 0;
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static uint32_t idle_time = 0;
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secure_status_t secure_get_status(void) {
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return secure_status;
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}
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void secure_lock(void) {
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secure_status = SECURE_LOCKED;
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}
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void secure_unlock(void) {
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secure_status = SECURE_UNLOCKED;
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idle_time = timer_read32();
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}
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void secure_request_unlock(void) {
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if (secure_status == SECURE_LOCKED) {
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secure_status = SECURE_PENDING;
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unlock_time = timer_read32();
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}
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}
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void secure_activity_event(void) {
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if (secure_status == SECURE_UNLOCKED) {
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idle_time = timer_read32();
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}
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}
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void secure_keypress_event(uint8_t row, uint8_t col) {
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static const uint8_t sequence[][2] = SECURE_UNLOCK_SEQUENCE;
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static const uint8_t sequence_len = sizeof(sequence) / sizeof(sequence[0]);
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static uint8_t offset = 0;
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if ((sequence[offset][0] == row) && (sequence[offset][1] == col)) {
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offset++;
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if (offset == sequence_len) {
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offset = 0;
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secure_unlock();
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}
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} else {
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offset = 0;
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secure_lock();
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}
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}
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void secure_task(void) {
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#if SECURE_UNLOCK_TIMEOUT != 0
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// handle unlock timeout
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if (secure_status == SECURE_PENDING) {
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if (timer_elapsed32(unlock_time) >= SECURE_UNLOCK_TIMEOUT) {
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secure_lock();
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}
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}
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#endif
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#if SECURE_IDLE_TIMEOUT != 0
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// handle idle timeout
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if (secure_status == SECURE_UNLOCKED) {
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if (timer_elapsed32(idle_time) >= SECURE_IDLE_TIMEOUT) {
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secure_lock();
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}
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}
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#endif
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}
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