125 lines
4.2 KiB
C
125 lines
4.2 KiB
C
#include "crypto_helpers.h"
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#include "os_io_seproxyhal.h"
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#include "shared_context.h"
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#include "common_utils.h"
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#include "common_ui.h"
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#include "handle_swap_sign_transaction.h"
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unsigned int io_seproxyhal_touch_tx_ok(__attribute__((unused)) const bagl_element_t *e) {
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uint32_t info = 0;
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int err;
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if (bip32_derive_ecdsa_sign_rs_hash_256(CX_CURVE_256K1,
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tmpCtx.transactionContext.bip32.path,
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tmpCtx.transactionContext.bip32.length,
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CX_RND_RFC6979 | CX_LAST,
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CX_SHA256,
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tmpCtx.transactionContext.hash,
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sizeof(tmpCtx.transactionContext.hash),
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G_io_apdu_buffer + 1,
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G_io_apdu_buffer + 1 + 32,
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&info) != CX_OK) {
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THROW(0x6F00);
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}
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if (txContext.txType == EIP1559 || txContext.txType == EIP2930) {
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if (info & CX_ECCINFO_PARITY_ODD) {
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G_io_apdu_buffer[0] = 1;
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} else {
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G_io_apdu_buffer[0] = 0;
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}
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} else {
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// Parity is present in the sequence tag in the legacy API
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if (tmpContent.txContent.vLength == 0) {
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// Legacy API
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G_io_apdu_buffer[0] = 27;
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} else {
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// New API
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// Note that this is wrong for a large v, but ledgerjs will recover.
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// Taking only the 4 highest bytes to not introduce breaking changes. In the future,
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// this should be updated.
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uint32_t v = (uint32_t) u64_from_BE(tmpContent.txContent.v,
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MIN(4, tmpContent.txContent.vLength));
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G_io_apdu_buffer[0] = (v * 2) + 35;
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}
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if (info & CX_ECCINFO_PARITY_ODD) {
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G_io_apdu_buffer[0]++;
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}
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if (info & CX_ECCINFO_xGTn) {
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G_io_apdu_buffer[0] += 2;
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}
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}
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// Write status code at parity_byte + r + s
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G_io_apdu_buffer[1 + 64] = 0x90;
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G_io_apdu_buffer[1 + 64 + 1] = 0x00;
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// Send back the response, do not restart the event loop
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err = io_exchange(CHANNEL_APDU | IO_RETURN_AFTER_TX, 1 + 64 + 2);
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if (G_called_from_swap) {
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PRINTF("G_called_from_swap\n");
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// If we are in swap mode and have validated a TX, we send it and immediately quit
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if (err == 0) {
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finalize_exchange_sign_transaction(true);
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} else {
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PRINTF("Unrecoverable\n");
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os_sched_exit(-1);
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}
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}
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reset_app_context();
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// Display back the original UX
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ui_idle();
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return 0; // do not redraw the widget
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}
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unsigned int io_seproxyhal_touch_tx_cancel(__attribute__((unused)) const bagl_element_t *e) {
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reset_app_context();
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G_io_apdu_buffer[0] = 0x69;
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G_io_apdu_buffer[1] = 0x85;
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// Send back the response, do not restart the event loop
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io_exchange(CHANNEL_APDU | IO_RETURN_AFTER_TX, 2);
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// Display back the original UX
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ui_idle();
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return 0; // do not redraw the widget
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}
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unsigned int io_seproxyhal_touch_data_ok(__attribute__((unused)) const bagl_element_t *e) {
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parserStatus_e txResult = USTREAM_FINISHED;
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txResult = continueTx(&txContext);
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switch (txResult) {
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case USTREAM_SUSPENDED:
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break;
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case USTREAM_FINISHED:
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break;
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case USTREAM_PROCESSING:
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io_seproxyhal_send_status(0x9000);
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ui_idle();
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break;
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case USTREAM_FAULT:
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reset_app_context();
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io_seproxyhal_send_status(0x6A80);
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ui_idle();
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break;
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default:
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PRINTF("Unexpected parser status\n");
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reset_app_context();
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io_seproxyhal_send_status(0x6A80);
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ui_idle();
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}
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if (txResult == USTREAM_FINISHED) {
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finalizeParsing(false);
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}
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return 0;
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}
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unsigned int io_seproxyhal_touch_data_cancel(__attribute__((unused)) const bagl_element_t *e) {
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reset_app_context();
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io_seproxyhal_send_status(0x6985);
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// Display back the original UX
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ui_idle();
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return 0; // do not redraw the widget
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}
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