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384 lines
11 KiB
384 lines
11 KiB
/*
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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 <libopencm3/stm32/flash.h>
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#include "address.h"
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#include "aes/aes.h"
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#include "base58.h"
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#include "bip32.h"
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#include "bip39.h"
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#include "coins.h"
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#include "config.h"
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#include "crypto.h"
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#include "curves.h"
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#include "debug.h"
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#include "ecdsa.h"
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#include "fsm.h"
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#include "fw_signatures.h"
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#include "gettext.h"
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#include "hmac.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 "protect.h"
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#include "recovery.h"
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#include "reset.h"
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#include "rfc6979.h"
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#include "rng.h"
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#include "secp256k1.h"
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#include "signing.h"
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#include "supervise.h"
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#include "transaction.h"
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#include "trezor.h"
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#include "usb.h"
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#include "util.h"
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#if !BITCOIN_ONLY
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#include "ethereum.h"
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#include "nem.h"
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#include "nem2.h"
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#include "stellar.h"
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#endif
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#if EMULATOR
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#include <stdio.h>
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#endif
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// message methods
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static uint8_t msg_resp[MSG_OUT_DECODED_SIZE] __attribute__((aligned));
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#define RESP_INIT(TYPE) \
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TYPE *resp = (TYPE *)(void *)msg_resp; \
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_Static_assert(sizeof(msg_resp) >= sizeof(TYPE), #TYPE " is too large"); \
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memzero(resp, sizeof(TYPE));
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#define CHECK_INITIALIZED \
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if (!config_isInitialized()) { \
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fsm_sendFailure(FailureType_Failure_NotInitialized, NULL); \
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return; \
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}
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#define CHECK_NOT_INITIALIZED \
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if (config_isInitialized()) { \
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fsm_sendFailure(FailureType_Failure_UnexpectedMessage, \
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_("Device is already initialized. Use Wipe first.")); \
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return; \
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}
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#define CHECK_PIN \
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if (!protectPin(true)) { \
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layoutHome(); \
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return; \
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}
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#define CHECK_PIN_UNCACHED \
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if (!protectPin(false)) { \
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layoutHome(); \
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return; \
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}
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#define CHECK_PARAM(cond, errormsg) \
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if (!(cond)) { \
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fsm_sendFailure(FailureType_Failure_DataError, (errormsg)); \
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layoutHome(); \
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return; \
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}
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void fsm_sendSuccess(const char *text) {
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RESP_INIT(Success);
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if (text) {
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resp->has_message = true;
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strlcpy(resp->message, text, sizeof(resp->message));
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}
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msg_write(MessageType_MessageType_Success, resp);
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}
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#if DEBUG_LINK
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void fsm_sendFailureDebug(FailureType code, const char *text,
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const char *source)
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#else
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void fsm_sendFailure(FailureType code, const char *text)
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#endif
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{
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if (protectAbortedByCancel) {
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protectAbortedByCancel = false;
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}
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if (protectAbortedByInitialize) {
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fsm_msgInitialize((Initialize *)0);
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protectAbortedByInitialize = false;
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return;
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}
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RESP_INIT(Failure);
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resp->has_code = true;
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resp->code = code;
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if (!text) {
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switch (code) {
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case FailureType_Failure_UnexpectedMessage:
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text = _("Unexpected message");
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break;
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case FailureType_Failure_ButtonExpected:
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text = _("Button expected");
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break;
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case FailureType_Failure_DataError:
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text = _("Data error");
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break;
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case FailureType_Failure_ActionCancelled:
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text = _("Action cancelled by user");
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break;
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case FailureType_Failure_PinExpected:
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text = _("PIN expected");
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break;
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case FailureType_Failure_PinCancelled:
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text = _("PIN cancelled");
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break;
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case FailureType_Failure_PinInvalid:
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text = _("PIN invalid");
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break;
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case FailureType_Failure_InvalidSignature:
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text = _("Invalid signature");
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break;
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case FailureType_Failure_ProcessError:
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text = _("Process error");
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break;
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case FailureType_Failure_NotEnoughFunds:
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text = _("Not enough funds");
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break;
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case FailureType_Failure_NotInitialized:
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text = _("Device not initialized");
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break;
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case FailureType_Failure_PinMismatch:
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text = _("PIN mismatch");
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break;
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case FailureType_Failure_WipeCodeMismatch:
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text = _("Wipe code mismatch");
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break;
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case FailureType_Failure_InvalidSession:
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text = _("Invalid session");
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break;
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case FailureType_Failure_FirmwareError:
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text = _("Firmware error");
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break;
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}
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}
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#if DEBUG_LINK
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resp->has_message = true;
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strlcpy(resp->message, source, sizeof(resp->message));
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if (text) {
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strlcat(resp->message, text, sizeof(resp->message));
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}
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#else
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if (text) {
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resp->has_message = true;
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strlcpy(resp->message, text, sizeof(resp->message));
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}
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#endif
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msg_write(MessageType_MessageType_Failure, resp);
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}
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static const CoinInfo *fsm_getCoin(bool has_name, const char *name) {
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const CoinInfo *coin = NULL;
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if (has_name) {
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coin = coinByName(name);
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} else {
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coin = coinByName("Bitcoin");
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}
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if (!coin) {
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fsm_sendFailure(FailureType_Failure_DataError, _("Invalid coin name"));
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layoutHome();
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return 0;
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}
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return coin;
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}
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static HDNode *fsm_getDerivedNode(const char *curve, const uint32_t *address_n,
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size_t address_n_count,
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uint32_t *fingerprint) {
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static CONFIDENTIAL HDNode node;
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if (fingerprint) {
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*fingerprint = 0;
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}
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if (!config_getRootNode(&node, curve)) {
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layoutHome();
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return 0;
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}
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if (!address_n || address_n_count == 0) {
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return &node;
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}
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if (hdnode_private_ckd_cached(&node, address_n, address_n_count,
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fingerprint) == 0) {
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fsm_sendFailure(FailureType_Failure_ProcessError,
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_("Failed to derive private key"));
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layoutHome();
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return 0;
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}
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return &node;
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}
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static bool fsm_layoutAddress(const char *address, const char *desc,
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bool ignorecase, size_t prefixlen,
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const uint32_t *address_n, size_t address_n_count,
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bool address_is_account,
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const MultisigRedeemScriptType *multisig,
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int multisig_index, uint32_t multisig_xpub_magic,
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const CoinInfo *coin) {
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int screen = 0, screens = 2;
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if (multisig) {
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screens += 2 * cryptoMultisigPubkeyCount(multisig);
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}
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for (;;) {
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switch (screen) {
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case 0: { // show address
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const char *display_addr = address;
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// strip cashaddr prefix
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if (prefixlen) {
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display_addr += prefixlen;
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}
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layoutAddress(display_addr, desc, false, ignorecase, address_n,
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address_n_count, address_is_account);
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break;
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}
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case 1: { // show QR code
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layoutAddress(address, desc, true, ignorecase, address_n,
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address_n_count, address_is_account);
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break;
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}
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default: { // show XPUBs
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int index = (screen - 2) / 2;
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int page = (screen - 2) % 2;
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char xpub[XPUB_MAXLEN] = {0};
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const HDNodeType *node_ptr = NULL;
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if (multisig->nodes_count) { // use multisig->nodes
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node_ptr = &(multisig->nodes[index]);
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} else if (multisig->pubkeys_count) { // use multisig->pubkeys
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node_ptr = &(multisig->pubkeys[index].node);
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}
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if (!node_ptr) {
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strlcat(xpub, "ERROR", sizeof(xpub));
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} else {
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HDNode node;
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if (!hdnode_from_xpub(node_ptr->depth, node_ptr->child_num,
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node_ptr->chain_code.bytes,
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node_ptr->public_key.bytes, coin->curve_name,
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&node)) {
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strlcat(xpub, "ERROR", sizeof(xpub));
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} else {
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hdnode_serialize_public(&node, node_ptr->fingerprint,
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multisig_xpub_magic, xpub, sizeof(xpub));
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}
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}
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layoutXPUBMultisig(xpub, index, page, multisig_index == index);
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break;
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}
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}
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if (protectButton(ButtonRequestType_ButtonRequest_Address, false)) {
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return true;
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}
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if (protectAbortedByCancel || protectAbortedByInitialize) {
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fsm_sendFailure(FailureType_Failure_ActionCancelled, NULL);
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layoutHome();
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return false;
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}
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screen = (screen + 1) % screens;
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}
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}
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static bool fsm_layoutPaginated(const char *description, const uint8_t *msg,
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uint32_t len, bool is_ascii) {
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const char **str = NULL;
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const uint32_t row_len = is_ascii ? 18 : 8;
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do {
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const uint32_t show_len = MIN(len, row_len * 4);
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if (is_ascii) {
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str = split_message(msg, show_len, row_len);
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} else {
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str = split_message_hex(msg, show_len);
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}
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msg += show_len;
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len -= show_len;
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const char *label = len > 0 ? _("Next") : _("Confirm");
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layoutDialogSwipeEx(&bmp_icon_question, _("Cancel"), label, description,
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str[0], str[1], str[2], str[3], NULL, NULL, FONT_FIXED);
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if (!protectButton(ButtonRequestType_ButtonRequest_Other, false)) {
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return false;
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}
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} while (len > 0);
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return true;
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}
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bool fsm_layoutSignMessage(const uint8_t *msg, uint32_t len) {
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if (is_valid_ascii(msg, len)) {
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return fsm_layoutPaginated(_("Sign message?"), msg, len, true);
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} else {
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return fsm_layoutPaginated(_("Sign binary message?"), msg, len, false);
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}
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}
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bool fsm_layoutVerifyMessage(const uint8_t *msg, uint32_t len) {
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if (is_valid_ascii(msg, len)) {
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return fsm_layoutPaginated(_("Verified message?"), msg, len, true);
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} else {
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return fsm_layoutPaginated(_("Verified binary message?"), msg, len, false);
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}
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}
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void fsm_msgRebootToBootloader(void) {
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layoutDialogSwipe(&bmp_icon_question, _("Cancel"), _("Confirm"), NULL,
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_("Do you want to"), _("restart device in"),
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_("bootloader mode?"), NULL, NULL, NULL);
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if (!protectButton(ButtonRequestType_ButtonRequest_ProtectCall, false)) {
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fsm_sendFailure(FailureType_Failure_ActionCancelled, NULL);
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layoutHome();
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return;
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}
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oledClear();
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oledRefresh();
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fsm_sendSuccess(_("Rebooting"));
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// make sure the outgoing message is sent
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usbFlush(500);
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#if !EMULATOR
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svc_reboot_to_bootloader();
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#else
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printf("Reboot!\n");
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#endif
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}
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#include "fsm_msg_coin.h"
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#include "fsm_msg_common.h"
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#include "fsm_msg_crypto.h"
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#include "fsm_msg_debug.h"
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#if !BITCOIN_ONLY
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#include "fsm_msg_ethereum.h"
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#include "fsm_msg_nem.h"
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#include "fsm_msg_stellar.h"
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#endif
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