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Enhancement and fixes of "Secure" feature (#16958)

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This commit is contained in:
Drashna Jaelre 2022-05-14 15:07:08 -07:00 committed by GitHub
parent baa8d07fdb
commit db887e63d7
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GPG Key ID: 4AEE18F83AFDEB23
8 changed files with 379 additions and 2 deletions
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8
quantum/process_keycode/process_secure.c
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@ -7,7 +7,9 @@
bool preprocess_secure(uint16_t keycode, keyrecord_t *record) {
if (secure_is_unlocking()) {
if (!record->event.pressed) {
// !pressed will trigger on any already held keys (such as layer keys),
// and cause the request secure check to prematurely fail.
if (record->event.pressed) {
secure_keypress_event(record->event.key.row, record->event.key.col);
}
@ -33,6 +35,10 @@ bool process_secure(uint16_t keycode, keyrecord_t *record) {
secure_is_locked() ? secure_unlock() : secure_lock();
return false;
}
if (keycode == SECURE_REQUEST) {
secure_request_unlock();
return false;
}
}
#endif
return true;

13
quantum/quantum.c
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@ -571,3 +571,16 @@ const char *get_u16_str(uint16_t curr_num, char curr_pad) {
last_pad = curr_pad;
return get_numeric_str(buf, sizeof(buf), curr_num, curr_pad);
}
#if defined(SECURE_ENABLE)
void secure_hook_quantum(secure_status_t secure_status) {
// If keys are being held when this is triggered, they may not be released properly
// this can result in stuck keys, mods and layers. To prevent that, manually
// clear these, when it is triggered.
if (secure_status == SECURE_PENDING) {
clear_keyboard();
layer_clear();
}
}
#endif

1
quantum/quantum_keycodes.h
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@ -601,6 +601,7 @@ enum quantum_keycodes {
SECURE_LOCK,
SECURE_UNLOCK,
SECURE_TOGGLE,
SECURE_REQUEST,
CAPS_WORD,

15
quantum/secure.c
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@ -23,17 +23,24 @@ static secure_status_t secure_status = SECURE_LOCKED;
static uint32_t unlock_time = 0;
static uint32_t idle_time = 0;
static void secure_hook(secure_status_t secure_status) {
secure_hook_quantum(secure_status);
secure_hook_kb(secure_status);
}
secure_status_t secure_get_status(void) {
return secure_status;
}
void secure_lock(void) {
secure_status = SECURE_LOCKED;
secure_hook(secure_status);
}
void secure_unlock(void) {
secure_status = SECURE_UNLOCKED;
idle_time = timer_read32();
secure_hook(secure_status);
}
void secure_request_unlock(void) {
@ -41,6 +48,7 @@ void secure_request_unlock(void) {
secure_status = SECURE_PENDING;
unlock_time = timer_read32();
}
secure_hook(secure_status);
}
void secure_activity_event(void) {
@ -85,3 +93,10 @@ void secure_task(void) {
}
#endif
}
__attribute__((weak)) bool secure_hook_user(secure_status_t secure_status) {
return true;
}
__attribute__((weak)) bool secure_hook_kb(secure_status_t secure_status) {
return secure_hook_user(secure_status);
}

12
quantum/secure.h
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@ -65,3 +65,15 @@ void secure_keypress_event(uint8_t row, uint8_t col);
/** \brief Handle various secure subsystem background tasks
*/
void secure_task(void);
/** \brief quantum hook called when changing secure status device
*/
void secure_hook_quantum(secure_status_t secure_status);
/** \brief user hook called when changing secure status device
*/
bool secure_hook_user(secure_status_t secure_status);
/** \brief keyboard hook called when changing secure status device
*/
bool secure_hook_kb(secure_status_t secure_status);

32
tests/secure/config.h Normal file
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@ -0,0 +1,32 @@
/* Copyright 2021 Stefan Kerkmann
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include "test_common.h"
// clang-format off
#define SECURE_UNLOCK_SEQUENCE \
{ \
{0, 1}, \
{0, 2}, \
{0, 3}, \
{0, 4} \
}
// clang-format on
#define SECURE_UNLOCK_TIMEOUT 20
#define SECURE_IDLE_TIMEOUT 50

20
tests/secure/test.mk Normal file
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@ -0,0 +1,20 @@
# Copyright 2021 Stefan Kerkmann
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
# --------------------------------------------------------------------------------
# Keep this file, even if it is empty, as a marker that this folder contains tests
# --------------------------------------------------------------------------------
SECURE_ENABLE = yes

278
tests/secure/test_secure.cpp Normal file
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@ -0,0 +1,278 @@
/* Copyright 2021 Stefan Kerkmann
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "gtest/gtest.h"
#include "keyboard_report_util.hpp"
#include "test_common.hpp"
using testing::_;
using testing::AnyNumber;
using testing::InSequence;
class Secure : public TestFixture {
public:
void SetUp() override {
secure_lock();
}
// Convenience function to tap `key`.
void TapKey(KeymapKey key) {
key.press();
run_one_scan_loop();
key.release();
run_one_scan_loop();
}
// Taps in order each key in `keys`.
template <typename... Ts>
void TapKeys(Ts... keys) {
for (KeymapKey key : {keys...}) {
TapKey(key);
}
}
};
TEST_F(Secure, test_lock) {
TestDriver driver;
// Allow any number of empty reports.
EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport())).Times(0);
EXPECT_FALSE(secure_is_unlocked());
secure_unlock();
EXPECT_TRUE(secure_is_unlocked());
run_one_scan_loop();
EXPECT_TRUE(secure_is_unlocked());
secure_lock();
EXPECT_FALSE(secure_is_unlocked());
testing::Mock::VerifyAndClearExpectations(&driver);
}
TEST_F(Secure, test_unlock_timeout) {
TestDriver driver;
// Allow any number of empty reports.
EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport())).Times(0);
EXPECT_FALSE(secure_is_unlocked());
secure_unlock();
EXPECT_TRUE(secure_is_unlocked());
idle_for(SECURE_IDLE_TIMEOUT+1);
EXPECT_FALSE(secure_is_unlocked());
testing::Mock::VerifyAndClearExpectations(&driver);
}
TEST_F(Secure, test_unlock_request) {
TestDriver driver;
auto key_mo = KeymapKey(0, 0, 0, MO(1));
auto key_a = KeymapKey(0, 1, 0, KC_A);
auto key_b = KeymapKey(0, 2, 0, KC_B);
auto key_c = KeymapKey(0, 3, 0, KC_C);
auto key_d = KeymapKey(0, 4, 0, KC_D);
set_keymap({key_mo, key_a, key_b, key_c, key_d});
// Allow any number of empty reports.
EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport())).Times(0);
EXPECT_TRUE(secure_is_locked());
secure_request_unlock();
EXPECT_TRUE(secure_is_unlocking());
TapKeys(key_a, key_b, key_c, key_d);
EXPECT_TRUE(secure_is_unlocked());
testing::Mock::VerifyAndClearExpectations(&driver);
}
TEST_F(Secure, test_unlock_request_fail) {
TestDriver driver;
auto key_e = KeymapKey(0, 0, 0, KC_E);
auto key_a = KeymapKey(0, 1, 0, KC_A);
auto key_b = KeymapKey(0, 2, 0, KC_B);
auto key_c = KeymapKey(0, 3, 0, KC_C);
auto key_d = KeymapKey(0, 4, 0, KC_D);
set_keymap({key_e, key_a, key_b, key_c, key_d});
// Allow any number of empty reports.
EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport())).Times(AnyNumber());
{ // Expect the following reports in this order.
InSequence s;
EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(KC_A)));
EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(KC_B)));
EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(KC_C)));
EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(KC_D)));
}
EXPECT_TRUE(secure_is_locked());
secure_request_unlock();
EXPECT_TRUE(secure_is_unlocking());
TapKeys(key_e, key_a, key_b, key_c, key_d);
EXPECT_FALSE(secure_is_unlocked());
testing::Mock::VerifyAndClearExpectations(&driver);
}
TEST_F(Secure, test_unlock_request_timeout) {
TestDriver driver;
// Allow any number of empty reports.
EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport())).Times(0);
EXPECT_FALSE(secure_is_unlocked());
secure_request_unlock();
EXPECT_TRUE(secure_is_unlocking());
idle_for(SECURE_UNLOCK_TIMEOUT+1);
EXPECT_FALSE(secure_is_unlocking());
EXPECT_FALSE(secure_is_unlocked());
testing::Mock::VerifyAndClearExpectations(&driver);
}
TEST_F(Secure, test_unlock_request_fail_mid) {
TestDriver driver;
auto key_e = KeymapKey(0, 0, 0, KC_E);
auto key_a = KeymapKey(0, 1, 0, KC_A);
auto key_b = KeymapKey(0, 2, 0, KC_B);
auto key_c = KeymapKey(0, 3, 0, KC_C);
auto key_d = KeymapKey(0, 4, 0, KC_D);
set_keymap({key_e, key_a, key_b, key_c, key_d});
// Allow any number of empty reports.
EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport())).Times(AnyNumber());
{ // Expect the following reports in this order.
InSequence s;
EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(KC_C)));
EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(KC_D)));
}
EXPECT_FALSE(secure_is_unlocked());
secure_request_unlock();
EXPECT_TRUE(secure_is_unlocking());
TapKeys(key_a, key_b, key_e, key_c, key_d);
EXPECT_FALSE(secure_is_unlocking());
EXPECT_FALSE(secure_is_unlocked());
testing::Mock::VerifyAndClearExpectations(&driver);
}
TEST_F(Secure, test_unlock_request_fail_out_of_order) {
TestDriver driver;
auto key_e = KeymapKey(0, 0, 0, KC_E);
auto key_a = KeymapKey(0, 1, 0, KC_A);
auto key_b = KeymapKey(0, 2, 0, KC_B);
auto key_c = KeymapKey(0, 3, 0, KC_C);
auto key_d = KeymapKey(0, 4, 0, KC_D);
set_keymap({key_e, key_a, key_b, key_c, key_d});
// Allow any number of empty reports.
EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport())).Times(AnyNumber());
{ // Expect the following reports in this order.
InSequence s;
EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(KC_B)));
EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(KC_C)));
}
EXPECT_FALSE(secure_is_unlocked());
secure_request_unlock();
EXPECT_TRUE(secure_is_unlocking());
TapKeys(key_a, key_d, key_b, key_c);
EXPECT_TRUE(secure_is_locked());
EXPECT_FALSE(secure_is_unlocking());
EXPECT_FALSE(secure_is_unlocked());
testing::Mock::VerifyAndClearExpectations(&driver);
}
TEST_F(Secure, test_unlock_request_on_layer) {
TestDriver driver;
auto key_mo = KeymapKey(0, 0, 0, MO(1));
auto key_a = KeymapKey(0, 1, 0, KC_A);
auto key_b = KeymapKey(0, 2, 0, KC_B);
auto key_c = KeymapKey(0, 3, 0, KC_C);
auto key_d = KeymapKey(0, 4, 0, KC_D);
set_keymap({key_mo, key_a, key_b, key_c, key_d});
// Allow any number of empty reports.
EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport())).Times(0);
EXPECT_TRUE(secure_is_locked());
key_mo.press();
run_one_scan_loop();
secure_request_unlock();
key_mo.release();
run_one_scan_loop();
EXPECT_TRUE(secure_is_unlocking());
TapKeys(key_a, key_b, key_c, key_d);
EXPECT_TRUE(secure_is_unlocked());
EXPECT_FALSE(layer_state_is(1));
testing::Mock::VerifyAndClearExpectations(&driver);
}
TEST_F(Secure, test_unlock_request_mid_stroke) {
TestDriver driver;
auto key_e = KeymapKey(0, 0, 0, KC_E);
auto key_a = KeymapKey(0, 1, 0, KC_A);
auto key_b = KeymapKey(0, 2, 0, KC_B);
auto key_c = KeymapKey(0, 3, 0, KC_C);
auto key_d = KeymapKey(0, 4, 0, KC_D);
set_keymap({key_e, key_a, key_b, key_c, key_d});
// Allow any number of empty reports.
EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(KC_E)));
EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport()));
EXPECT_TRUE(secure_is_locked());
key_e.press();
run_one_scan_loop();
secure_request_unlock();
key_e.release();
run_one_scan_loop();
EXPECT_TRUE(secure_is_unlocking());
TapKeys(key_a, key_b, key_c, key_d);
EXPECT_TRUE(secure_is_unlocked());
testing::Mock::VerifyAndClearExpectations(&driver);
}
TEST_F(Secure, test_unlock_request_mods) {
TestDriver driver;
auto key_lsft = KeymapKey(0, 0, 0, KC_LSFT);
auto key_a = KeymapKey(0, 1, 0, KC_A);
auto key_b = KeymapKey(0, 2, 0, KC_B);
auto key_c = KeymapKey(0, 3, 0, KC_C);
auto key_d = KeymapKey(0, 4, 0, KC_D);
set_keymap({key_lsft, key_a, key_b, key_c, key_d});
// Allow any number of empty reports.
EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(key_lsft.report_code)));
EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport()));
EXPECT_TRUE(secure_is_locked());
key_lsft.press();
run_one_scan_loop();
secure_request_unlock();
key_lsft.release();
run_one_scan_loop();
EXPECT_TRUE(secure_is_unlocking());
TapKeys(key_a, key_b, key_c, key_d);
EXPECT_TRUE(secure_is_unlocked());
testing::Mock::VerifyAndClearExpectations(&driver);
}