mirror of
https://github.com/trezor/trezor-firmware.git
synced 2024-11-22 23:48:12 +00:00
321 lines
9.1 KiB
C
321 lines
9.1 KiB
C
/*
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* This file is part of the Trezor project, https://trezor.io/
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*
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* Copyright (C) 2014 Pavol Rusnak <stick@satoshilabs.com>
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*
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* This library is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "protect.h"
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#include "buttons.h"
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#include "config.h"
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#include "debug.h"
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#include "fsm.h"
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#include "gettext.h"
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#include "layout2.h"
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#include "memory.h"
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#include "memzero.h"
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#include "messages.h"
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#include "messages.pb.h"
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#include "oled.h"
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#include "pinmatrix.h"
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#include "usb.h"
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#include "util.h"
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#define MAX_WRONG_PINS 15
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bool protectAbortedByCancel = false;
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bool protectAbortedByInitialize = false;
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bool protectButton(ButtonRequestType type, bool confirm_only) {
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ButtonRequest resp = {0};
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bool result = false;
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bool acked = false;
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#if DEBUG_LINK
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bool debug_decided = false;
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#endif
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memzero(&resp, sizeof(ButtonRequest));
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resp.has_code = true;
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resp.code = type;
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usbTiny(1);
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buttonUpdate(); // Clear button state
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msg_write(MessageType_MessageType_ButtonRequest, &resp);
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for (;;) {
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usbPoll();
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// check for ButtonAck
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if (msg_tiny_id == MessageType_MessageType_ButtonAck) {
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msg_tiny_id = 0xFFFF;
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acked = true;
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}
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// button acked - check buttons
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if (acked) {
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usbSleep(5);
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buttonUpdate();
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if (button.YesUp) {
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result = true;
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break;
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}
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if (!confirm_only && button.NoUp) {
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result = false;
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break;
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}
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}
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// check for Cancel / Initialize
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protectAbortedByCancel = (msg_tiny_id == MessageType_MessageType_Cancel);
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protectAbortedByInitialize =
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(msg_tiny_id == MessageType_MessageType_Initialize);
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if (protectAbortedByCancel || protectAbortedByInitialize) {
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msg_tiny_id = 0xFFFF;
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result = false;
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break;
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}
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#if DEBUG_LINK
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// check DebugLink
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if (msg_tiny_id == MessageType_MessageType_DebugLinkDecision) {
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msg_tiny_id = 0xFFFF;
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DebugLinkDecision *dld = (DebugLinkDecision *)msg_tiny;
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result = dld->yes_no;
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debug_decided = true;
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}
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if (acked && debug_decided) {
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break;
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}
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if (msg_tiny_id == MessageType_MessageType_DebugLinkGetState) {
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msg_tiny_id = 0xFFFF;
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fsm_msgDebugLinkGetState((DebugLinkGetState *)msg_tiny);
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}
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#endif
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}
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usbTiny(0);
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return result;
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}
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const char *requestPin(PinMatrixRequestType type, const char *text) {
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PinMatrixRequest resp = {0};
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memzero(&resp, sizeof(PinMatrixRequest));
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resp.has_type = true;
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resp.type = type;
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usbTiny(1);
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msg_write(MessageType_MessageType_PinMatrixRequest, &resp);
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pinmatrix_start(text);
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for (;;) {
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usbPoll();
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if (msg_tiny_id == MessageType_MessageType_PinMatrixAck) {
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msg_tiny_id = 0xFFFF;
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PinMatrixAck *pma = (PinMatrixAck *)msg_tiny;
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pinmatrix_done(pma->pin); // convert via pinmatrix
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usbTiny(0);
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return pma->pin;
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}
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// check for Cancel / Initialize
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protectAbortedByCancel = (msg_tiny_id == MessageType_MessageType_Cancel);
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protectAbortedByInitialize =
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(msg_tiny_id == MessageType_MessageType_Initialize);
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if (protectAbortedByCancel || protectAbortedByInitialize) {
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pinmatrix_done(0);
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msg_tiny_id = 0xFFFF;
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usbTiny(0);
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return 0;
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}
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#if DEBUG_LINK
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if (msg_tiny_id == MessageType_MessageType_DebugLinkGetState) {
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msg_tiny_id = 0xFFFF;
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fsm_msgDebugLinkGetState((DebugLinkGetState *)msg_tiny);
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}
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#endif
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}
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}
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secbool protectPinUiCallback(uint32_t wait, uint32_t progress,
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const char *message) {
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// Convert wait to secstr string.
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char secstrbuf[] = _("________0 seconds");
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char *secstr = secstrbuf + 9;
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uint32_t secs = wait;
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do {
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secstr--;
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*secstr = (secs % 10) + '0';
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secs /= 10;
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} while (secs > 0 && secstr >= secstrbuf);
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if (wait == 1) {
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// Change "seconds" to "second".
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secstrbuf[16] = 0;
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}
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oledClear();
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oledDrawStringCenter(OLED_WIDTH / 2, 0 * 9, message, FONT_STANDARD);
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oledDrawStringCenter(OLED_WIDTH / 2, 2 * 9, _("Please wait"), FONT_STANDARD);
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oledDrawStringCenter(OLED_WIDTH / 2, 3 * 9, secstr, FONT_STANDARD);
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oledDrawStringCenter(OLED_WIDTH / 2, 4 * 9, _("to continue ..."),
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FONT_STANDARD);
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// progressbar
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oledFrame(0, OLED_HEIGHT - 8, OLED_WIDTH - 1, OLED_HEIGHT - 1);
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oledBox(1, OLED_HEIGHT - 7, OLED_WIDTH - 2, OLED_HEIGHT - 2, 0);
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progress = progress * (OLED_WIDTH - 4) / 1000;
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if (progress > OLED_WIDTH - 4) {
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progress = OLED_WIDTH - 4;
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}
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oledBox(2, OLED_HEIGHT - 6, 1 + progress, OLED_HEIGHT - 3, 1);
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oledRefresh();
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// Check for Cancel / Initialize.
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protectAbortedByCancel = (msg_tiny_id == MessageType_MessageType_Cancel);
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protectAbortedByInitialize =
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(msg_tiny_id == MessageType_MessageType_Initialize);
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if (protectAbortedByCancel || protectAbortedByInitialize) {
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msg_tiny_id = 0xFFFF;
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usbTiny(0);
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fsm_sendFailure(FailureType_Failure_PinCancelled, NULL);
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return sectrue;
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}
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return secfalse;
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}
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bool protectPin(bool use_cached) {
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if (use_cached && session_isUnlocked()) {
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return true;
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}
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const char *pin = "";
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if (config_hasPin()) {
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pin = requestPin(PinMatrixRequestType_PinMatrixRequestType_Current,
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_("Please enter current PIN:"));
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if (!pin) {
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fsm_sendFailure(FailureType_Failure_PinCancelled, NULL);
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return false;
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}
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}
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bool ret = config_unlock(pin);
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if (!ret) {
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fsm_sendFailure(FailureType_Failure_PinInvalid, NULL);
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}
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return ret;
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}
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bool protectChangePin(bool removal) {
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static CONFIDENTIAL char old_pin[MAX_PIN_LEN + 1] = "";
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static CONFIDENTIAL char new_pin[MAX_PIN_LEN + 1] = "";
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const char *pin = NULL;
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if (config_hasPin()) {
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pin = requestPin(PinMatrixRequestType_PinMatrixRequestType_Current,
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_("Please enter current PIN:"));
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if (pin == NULL) {
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fsm_sendFailure(FailureType_Failure_PinCancelled, NULL);
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return false;
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}
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// If removing, defer the check to config_changePin().
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if (!removal) {
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usbTiny(1);
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bool ret = config_unlock(pin);
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usbTiny(0);
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if (ret == false) {
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fsm_sendFailure(FailureType_Failure_PinInvalid, NULL);
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return false;
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}
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}
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strlcpy(old_pin, pin, sizeof(old_pin));
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}
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if (!removal) {
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pin = requestPin(PinMatrixRequestType_PinMatrixRequestType_NewFirst,
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_("Please enter new PIN:"));
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if (pin == NULL) {
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memzero(old_pin, sizeof(old_pin));
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fsm_sendFailure(FailureType_Failure_PinCancelled, NULL);
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return false;
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}
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strlcpy(new_pin, pin, sizeof(new_pin));
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pin = requestPin(PinMatrixRequestType_PinMatrixRequestType_NewSecond,
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_("Please re-enter new PIN:"));
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if (pin == NULL) {
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memzero(old_pin, sizeof(old_pin));
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memzero(new_pin, sizeof(new_pin));
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fsm_sendFailure(FailureType_Failure_PinCancelled, NULL);
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return false;
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}
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if (strncmp(new_pin, pin, sizeof(new_pin)) != 0) {
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memzero(old_pin, sizeof(old_pin));
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memzero(new_pin, sizeof(new_pin));
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fsm_sendFailure(FailureType_Failure_PinMismatch, NULL);
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return false;
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}
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}
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bool ret = config_changePin(old_pin, new_pin);
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memzero(old_pin, sizeof(old_pin));
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memzero(new_pin, sizeof(new_pin));
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if (ret == false) {
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fsm_sendFailure(FailureType_Failure_PinInvalid, NULL);
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}
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return ret;
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}
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bool protectPassphrase(void) {
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bool passphrase_protection = false;
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config_getPassphraseProtection(&passphrase_protection);
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if (!passphrase_protection || session_isPassphraseCached()) {
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return true;
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}
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PassphraseRequest resp = {0};
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memzero(&resp, sizeof(PassphraseRequest));
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usbTiny(1);
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msg_write(MessageType_MessageType_PassphraseRequest, &resp);
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layoutDialogSwipe(&bmp_icon_info, NULL, NULL, NULL, _("Please enter your"),
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_("passphrase using"), _("the computer's"), _("keyboard."),
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NULL, NULL);
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bool result;
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for (;;) {
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usbPoll();
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// TODO: correctly process PassphraseAck with state field set (mismatch =>
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// Failure)
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if (msg_tiny_id == MessageType_MessageType_PassphraseAck) {
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msg_tiny_id = 0xFFFF;
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PassphraseAck *ppa = (PassphraseAck *)msg_tiny;
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session_cachePassphrase(ppa->has_passphrase ? ppa->passphrase : "");
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result = true;
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break;
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}
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// check for Cancel / Initialize
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protectAbortedByCancel = (msg_tiny_id == MessageType_MessageType_Cancel);
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protectAbortedByInitialize =
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(msg_tiny_id == MessageType_MessageType_Initialize);
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if (protectAbortedByCancel || protectAbortedByInitialize) {
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msg_tiny_id = 0xFFFF;
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result = false;
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break;
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}
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}
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usbTiny(0);
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layoutHome();
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return result;
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}
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