mirror of
https://github.com/trezor/trezor-firmware.git
synced 2024-11-25 08:58:14 +00:00
408 lines
13 KiB
C
408 lines
13 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) 2018 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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static bool fsm_ethereumCheckPath(uint32_t address_n_count,
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const uint32_t *address_n, bool pubkey_export,
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const EthereumNetworkInfo *network) {
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if (ethereum_path_check(address_n_count, address_n, pubkey_export, network)) {
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return true;
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}
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if (config_getSafetyCheckLevel() == SafetyCheckLevel_Strict) {
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fsm_sendFailure(FailureType_Failure_DataError, _("Forbidden key path"));
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return false;
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}
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return fsm_layoutPathWarning();
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}
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static const EthereumDefinitionsDecoded *get_definitions(
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bool has_definitions, const EthereumDefinitions *definitions,
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uint64_t chain_id, const char *to) {
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const EncodedNetwork *encoded_network = NULL;
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const EncodedToken *encoded_token = NULL;
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if (has_definitions && definitions) {
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if (definitions->has_encoded_network) {
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encoded_network = &definitions->encoded_network;
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}
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if (definitions->has_encoded_token) {
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encoded_token = &definitions->encoded_token;
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}
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}
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return ethereum_get_definitions(encoded_network, encoded_token, chain_id,
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SLIP44_UNKNOWN, to);
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}
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static const EthereumNetworkInfo *get_network_definition_only(
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bool has_encoded_network, const EncodedNetwork *encoded_network,
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const uint32_t slip44) {
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const EncodedNetwork *en = NULL;
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if (has_encoded_network) {
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en = encoded_network;
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}
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const EthereumDefinitionsDecoded *defs =
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ethereum_get_definitions(en, NULL, CHAIN_ID_UNKNOWN, slip44, NULL);
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return defs ? defs->network : NULL;
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}
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void fsm_msgEthereumGetPublicKey(const EthereumGetPublicKey *msg) {
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RESP_INIT(EthereumPublicKey);
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CHECK_INITIALIZED
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CHECK_PIN
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// we use Bitcoin-like format for ETH
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const CoinInfo *coin = fsm_getCoin(true, "Bitcoin");
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if (!coin) return;
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// Only allow m/44' and m/45' subtrees. This allows usage with _any_ SLIP-44
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// (Ethereum or otherwise), plus the Casa multisig subtree. Anything else must
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// go through (a) GetPublicKey or (b) a dedicated coin-specific message.
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if (!msg->address_n_count || (msg->address_n[0] != (44 | PATH_HARDENED) &&
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msg->address_n[0] != (45 | PATH_HARDENED))) {
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fsm_sendFailure(FailureType_Failure_DataError,
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_("Invalid path for EthereumGetPublicKey"));
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layoutHome();
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return;
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}
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const char *curve = coin->curve_name;
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uint32_t fingerprint;
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HDNode *node = fsm_getDerivedNode(curve, msg->address_n, msg->address_n_count,
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&fingerprint);
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if (!node) return;
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if (hdnode_fill_public_key(node) != 0) {
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fsm_sendFailure(FailureType_Failure_ProcessError,
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_("Failed to derive public key"));
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layoutHome();
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return;
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}
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if (msg->has_show_display && msg->show_display) {
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layoutPublicKey(node->public_key);
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if (!protectButton(ButtonRequestType_ButtonRequest_PublicKey, true)) {
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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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}
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resp->node.depth = node->depth;
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resp->node.fingerprint = fingerprint;
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resp->node.child_num = node->child_num;
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resp->node.chain_code.size = 32;
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memcpy(resp->node.chain_code.bytes, node->chain_code, 32);
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resp->node.has_private_key = false;
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resp->node.public_key.size = 33;
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memcpy(resp->node.public_key.bytes, node->public_key, 33);
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hdnode_serialize_public(node, fingerprint, coin->xpub_magic, resp->xpub,
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sizeof(resp->xpub));
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msg_write(MessageType_MessageType_EthereumPublicKey, resp);
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layoutHome();
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}
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void fsm_msgEthereumSignTx(const EthereumSignTx *msg) {
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CHECK_INITIALIZED
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CHECK_PIN
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const EthereumDefinitionsDecoded *defs =
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get_definitions(msg->has_definitions, &msg->definitions, msg->chain_id,
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msg->has_to ? msg->to : NULL);
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if (!defs || !fsm_ethereumCheckPath(msg->address_n_count, msg->address_n,
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false, defs->network)) {
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layoutHome();
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return;
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}
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const HDNode *node = fsm_getDerivedNode(SECP256K1_NAME, msg->address_n,
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msg->address_n_count, NULL);
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if (!node) return;
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ethereum_signing_init(msg, node, defs);
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}
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void fsm_msgEthereumSignTxEIP1559(const EthereumSignTxEIP1559 *msg) {
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CHECK_INITIALIZED
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CHECK_PIN
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const EthereumDefinitionsDecoded *defs =
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get_definitions(msg->has_definitions, &msg->definitions, msg->chain_id,
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msg->has_to ? msg->to : NULL);
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if (!defs || !fsm_ethereumCheckPath(msg->address_n_count, msg->address_n,
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false, defs->network)) {
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layoutHome();
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return;
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}
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const HDNode *node = fsm_getDerivedNode(SECP256K1_NAME, msg->address_n,
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msg->address_n_count, NULL);
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if (!node) return;
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ethereum_signing_init_eip1559(msg, node, defs);
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}
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void fsm_msgEthereumTxAck(const EthereumTxAck *msg) {
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CHECK_UNLOCKED
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ethereum_signing_txack(msg);
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}
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void fsm_msgEthereumGetAddress(const EthereumGetAddress *msg) {
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RESP_INIT(EthereumAddress);
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CHECK_INITIALIZED
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CHECK_PIN
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uint32_t slip44 = (msg->address_n_count > 1)
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? (msg->address_n[1] & PATH_UNHARDEN_MASK)
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: SLIP44_UNKNOWN;
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const EthereumNetworkInfo *network = get_network_definition_only(
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msg->has_encoded_network, (const EncodedNetwork *)&msg->encoded_network,
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slip44);
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if (!network || !fsm_ethereumCheckPath(msg->address_n_count, msg->address_n,
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false, network)) {
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layoutHome();
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return;
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}
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const HDNode *node = fsm_getDerivedNode(SECP256K1_NAME, msg->address_n,
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msg->address_n_count, NULL);
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if (!node) return;
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uint8_t pubkeyhash[20];
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if (!hdnode_get_ethereum_pubkeyhash(node, pubkeyhash)) {
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layoutHome();
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return;
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}
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bool rskip60 = false;
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uint64_t chain_id = 0;
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// constants from trezor-common/defs/ethereum/networks.json
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switch (slip44) {
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case 137:
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rskip60 = true;
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chain_id = 30;
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break;
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case 37310:
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rskip60 = true;
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chain_id = 31;
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break;
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}
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resp->has_address = true;
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ethereum_address_checksum(pubkeyhash, resp->address, rskip60, chain_id);
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// ethereum_address_checksum adds trailing zero
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if (msg->has_show_display && msg->show_display) {
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char desc[16];
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strlcpy(desc, "Address:", sizeof(desc));
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if (!fsm_layoutAddress(resp->address, desc, false, 0, msg->address_n,
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msg->address_n_count, true, NULL, 0, 0, NULL)) {
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return;
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}
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}
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msg_write(MessageType_MessageType_EthereumAddress, resp);
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layoutHome();
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}
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void fsm_msgEthereumSignMessage(const EthereumSignMessage *msg) {
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RESP_INIT(EthereumMessageSignature);
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CHECK_INITIALIZED
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CHECK_PIN
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uint32_t slip44 = (msg->address_n_count > 1)
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? (msg->address_n[1] & PATH_UNHARDEN_MASK)
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: SLIP44_UNKNOWN;
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const EthereumNetworkInfo *network = get_network_definition_only(
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msg->has_encoded_network, (const EncodedNetwork *)&msg->encoded_network,
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slip44);
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if (!network || !fsm_ethereumCheckPath(msg->address_n_count, msg->address_n,
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false, network)) {
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layoutHome();
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return;
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}
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const HDNode *node = fsm_getDerivedNode(SECP256K1_NAME, msg->address_n,
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msg->address_n_count, NULL);
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if (!node) return;
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uint8_t pubkeyhash[20] = {0};
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if (!hdnode_get_ethereum_pubkeyhash(node, pubkeyhash)) {
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layoutHome();
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return;
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}
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ethereum_address_checksum(pubkeyhash, resp->address, false, 0);
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// ethereum_address_checksum adds trailing zero
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layoutVerifyAddress(NULL, resp->address);
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if (!protectButton(ButtonRequestType_ButtonRequest_Other, 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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if (!fsm_layoutSignMessage(msg->message.bytes, msg->message.size)) {
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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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ethereum_message_sign(msg, node, resp);
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layoutHome();
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}
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void fsm_msgEthereumVerifyMessage(const EthereumVerifyMessage *msg) {
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if (ethereum_message_verify(msg) != 0) {
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fsm_sendFailure(FailureType_Failure_DataError, _("Invalid signature"));
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return;
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}
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uint8_t pubkeyhash[20];
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if (!ethereum_parse(msg->address, pubkeyhash)) {
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fsm_sendFailure(FailureType_Failure_DataError, _("Invalid address"));
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return;
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}
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layoutVerifyAddress(NULL, msg->address);
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if (!protectButton(ButtonRequestType_ButtonRequest_Other, 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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if (!fsm_layoutVerifyMessage(msg->message.bytes, msg->message.size)) {
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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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layoutDialogSwipe(&bmp_icon_ok, NULL, _("Continue"), NULL, NULL,
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_("The signature is valid."), NULL, NULL, NULL, NULL);
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if (!protectButton(ButtonRequestType_ButtonRequest_Other, true)) {
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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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fsm_sendSuccess(_("Message verified"));
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layoutHome();
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}
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void fsm_msgEthereumSignTypedHash(const EthereumSignTypedHash *msg) {
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RESP_INIT(EthereumTypedDataSignature);
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CHECK_INITIALIZED
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CHECK_PIN
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if (msg->domain_separator_hash.size != 32 ||
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(msg->has_message_hash && msg->message_hash.size != 32)) {
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fsm_sendFailure(FailureType_Failure_DataError, _("Invalid hash length"));
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return;
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}
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uint32_t slip44 = (msg->address_n_count > 1)
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? (msg->address_n[1] & PATH_UNHARDEN_MASK)
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: SLIP44_UNKNOWN;
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const EthereumNetworkInfo *network = get_network_definition_only(
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msg->has_encoded_network, (const EncodedNetwork *)&msg->encoded_network,
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slip44);
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if (!network || !fsm_ethereumCheckPath(msg->address_n_count, msg->address_n,
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false, network)) {
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layoutHome();
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return;
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}
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layoutDialogSwipe(&bmp_icon_warning, _("Abort"), _("Continue"), NULL,
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_("Unable to show"), _("EIP-712 data."), NULL,
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_("Sign at your own risk."), 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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const HDNode *node = fsm_getDerivedNode(SECP256K1_NAME, msg->address_n,
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msg->address_n_count, NULL);
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if (!node) return;
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uint8_t pubkeyhash[20] = {0};
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if (!hdnode_get_ethereum_pubkeyhash(node, pubkeyhash)) {
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layoutHome();
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return;
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}
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ethereum_address_checksum(pubkeyhash, resp->address, false, 0);
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// ethereum_address_checksum adds trailing zero
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layoutVerifyAddress(NULL, resp->address);
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if (!protectButton(ButtonRequestType_ButtonRequest_Other, 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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layoutConfirmHash(&bmp_icon_warning, _("EIP-712 domain hash"),
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msg->domain_separator_hash.bytes, 32);
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if (!protectButton(ButtonRequestType_ButtonRequest_Other, 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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// No message hash when setting primaryType="EIP712Domain"
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// https://ethereum-magicians.org/t/eip-712-standards-clarification-primarytype-as-domaintype/3286
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if (msg->has_message_hash) {
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layoutConfirmHash(&bmp_icon_warning, _("EIP-712 message hash"),
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msg->message_hash.bytes, 32);
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if (!protectButton(ButtonRequestType_ButtonRequest_Other, 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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}
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ethereum_typed_hash_sign(msg, node, resp);
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layoutHome();
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}
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