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mirror of https://github.com/trezor/trezor-firmware.git synced 2024-12-24 23:38:09 +00:00
trezor-firmware/core/embed/unix/common.c
matejcik 9244522721 fix(core): remove shutdown()
In a very weird situation, our declaration of `shutdown()` shadows a
function `shutdown(int, int)` from sys/socket, which _just happens_ to
be called by libxcb when closing the sdl window. This calls
`main_clean_exit` which calls into micropython and causes at best an
uncaught NLR and at worst an outright segfault because by that time the
micropython environment doesn't exist anymore.

I didn't think this sort of thing would be possible but here we are??

Fixed by removing `__shutdown()` and replacing `shutdown` with
`trezor_shutdown`
2023-03-24 13:24:46 +01:00

187 lines
5.0 KiB
C

/*
* This file is part of the Trezor project, https://trezor.io/
*
* Copyright (c) SatoshiLabs
*
* 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 3 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 <SDL.h>
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/time.h>
#include <unistd.h>
#include "common.h"
#include "display.h"
#ifdef FANCY_FATAL_ERROR
#include "rust_ui.h"
#endif
#include "memzero.h"
extern void main_clean_exit();
extern float DISPLAY_GAMMA;
void __attribute__((noreturn)) trezor_shutdown(void) {
printf("SHUTDOWN\n");
main_clean_exit(3);
for (;;)
;
}
#ifdef RGB16
#define COLOR_FATAL_ERROR RGB16(0x7F, 0x00, 0x00)
#else
// black on monochromatic displays
#define COLOR_FATAL_ERROR 0x0000
#endif
void __attribute__((noreturn))
__fatal_error(const char *expr, const char *msg, const char *file, int line,
const char *func) {
display_orientation(0);
display_backlight(255);
#ifdef FANCY_FATAL_ERROR
char buf[256] = {0};
snprintf(buf, sizeof(buf), "%s: %d", file, line);
screen_fatal_error_c(msg, buf);
display_refresh();
#else
display_print_color(COLOR_WHITE, COLOR_FATAL_ERROR);
display_printf("\nFATAL ERROR:\n");
printf("\nFATAL ERROR:\n");
if (expr) {
display_printf("expr: %s\n", expr);
printf("expr: %s\n", expr);
}
if (msg) {
display_printf("msg : %s\n", msg);
printf("msg : %s\n", msg);
}
if (file) {
display_printf("file: %s:%d\n", file, line);
printf("file: %s:%d\n", file, line);
}
if (func) {
display_printf("func: %s\n", func);
printf("func: %s\n", func);
}
#ifdef SCM_REVISION
const uint8_t *rev = (const uint8_t *)SCM_REVISION;
display_printf("rev : %02x%02x%02x%02x%02x\n", rev[0], rev[1], rev[2], rev[3],
rev[4]);
printf("rev : %02x%02x%02x%02x%02x\n", rev[0], rev[1], rev[2], rev[3],
rev[4]);
#endif
display_printf("\n\n\nHint:\nIsn't the emulator already running?\n");
printf("Hint:\nIsn't the emulator already running?\n");
#endif
hal_delay(3000);
trezor_shutdown();
}
void __attribute__((noreturn))
error_shutdown(const char *label, const char *msg) {
#ifdef FANCY_FATAL_ERROR
screen_error_shutdown_c(label, msg);
display_refresh();
#else
display_clear();
display_bar(0, 0, DISPLAY_RESX, DISPLAY_RESY, COLOR_FATAL_ERROR);
int y = 32;
if (label) {
display_text(8, y, label, -1, FONT_NORMAL, COLOR_WHITE, COLOR_FATAL_ERROR);
printf("%s\n", label);
y += 32;
}
if (msg) {
display_text(8, y, msg, -1, FONT_NORMAL, COLOR_WHITE, COLOR_FATAL_ERROR);
printf("%s\n", msg);
y += 32;
}
y += 32;
display_text(8, y, "Please unplug the device.", -1, FONT_NORMAL, COLOR_WHITE,
COLOR_FATAL_ERROR);
printf("\nPlease unplug the device.\n");
#endif
display_backlight(255);
hal_delay(5000);
exit(4);
}
void hal_delay(uint32_t ms) { usleep(1000 * ms); }
uint32_t hal_ticks_ms() {
struct timeval tv;
gettimeofday(&tv, NULL);
return tv.tv_sec * 1000 + tv.tv_usec / 1000;
}
static int SDLCALL emulator_event_filter(void *userdata, SDL_Event *event) {
switch (event->type) {
case SDL_QUIT:
trezor_shutdown();
return 0;
case SDL_KEYUP:
if (event->key.repeat) {
return 0;
}
switch (event->key.keysym.sym) {
case SDLK_ESCAPE:
trezor_shutdown();
return 0;
case SDLK_p:
display_save("emu");
return 0;
#if defined TREZOR_MODEL_T
// Left and right arrows controlling display gamma
// Only for TT (in button models, arrows do different things)
case SDLK_LEFT:
DISPLAY_GAMMA = fmaxf(0.0f, DISPLAY_GAMMA - 0.05f);
printf("DISPLAY_GAMMA: %0.2f\n", DISPLAY_GAMMA);
display_refresh();
return 0;
case SDLK_RIGHT:
DISPLAY_GAMMA = fminf(8.0f, DISPLAY_GAMMA + 0.05f);
printf("DISPLAY_GAMMA: %0.2f\n", DISPLAY_GAMMA);
display_refresh();
return 0;
#endif
}
break;
}
return 1;
}
void emulator_poll_events(void) {
SDL_PumpEvents();
SDL_FilterEvents(emulator_event_filter, NULL);
}
uint8_t HW_ENTROPY_DATA[HW_ENTROPY_LEN];
void collect_hw_entropy(void) { memzero(HW_ENTROPY_DATA, HW_ENTROPY_LEN); }
void show_wipe_code_screen(void) {
error_shutdown(
"DEVICE WIPED!",
"You have entered the wipe code. All private data has been erased.");
}
void show_pin_too_many_screen(void) {
error_shutdown("DEVICE WIPED!",
"Too many wrong PIN attempts. Storage has been wiped.");
}