2008307c0c
- Update src code to adapt to new API 'os_pki_verify' - Support both Ledger-PKI and legacy method
84 lines
2.8 KiB
C
84 lines
2.8 KiB
C
#include "shared_context.h"
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#include "apdu_constants.h"
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#include "public_keys.h"
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#include "common_ui.h"
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#include "os_io_seproxyhal.h"
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#include "network.h"
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#include "manage_asset_info.h"
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#ifdef HAVE_LEDGER_PKI
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#include "os_pki.h"
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#endif
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void handleProvideErc20TokenInformation(uint8_t p1,
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uint8_t p2,
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const uint8_t *workBuffer,
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uint8_t dataLength,
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unsigned int *flags,
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unsigned int *tx) {
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UNUSED(p1);
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UNUSED(p2);
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UNUSED(flags);
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UNUSED(tx);
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uint32_t offset = 0;
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uint8_t tickerLength;
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uint64_t chain_id;
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uint8_t hash[INT256_LENGTH];
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tokenDefinition_t *token = &get_current_asset_info()->token;
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cx_err_t error = CX_INTERNAL_ERROR;
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PRINTF("Provisioning currentAssetIndex %d\n", tmpCtx.transactionContext.currentAssetIndex);
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if (dataLength < 1) {
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THROW(APDU_RESPONSE_INVALID_DATA);
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}
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tickerLength = workBuffer[offset++];
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dataLength--;
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if ((tickerLength + 1) > sizeof(token->ticker)) {
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THROW(APDU_RESPONSE_INVALID_DATA);
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}
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if (dataLength < tickerLength + 20 + 4 + 4) {
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THROW(APDU_RESPONSE_INVALID_DATA);
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}
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cx_hash_sha256(workBuffer + offset, tickerLength + 20 + 4 + 4, hash, 32);
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memmove(token->ticker, workBuffer + offset, tickerLength);
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token->ticker[tickerLength] = '\0';
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offset += tickerLength;
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dataLength -= tickerLength;
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memmove(token->address, workBuffer + offset, 20);
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offset += 20;
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dataLength -= 20;
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// TODO: 4 bytes for this is overkill
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token->decimals = U4BE(workBuffer, offset);
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offset += 4;
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dataLength -= 4;
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// TODO: Handle 64-bit long chain IDs
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chain_id = U4BE(workBuffer, offset);
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if (!app_compatible_with_chain_id(&chain_id)) {
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UNSUPPORTED_CHAIN_ID_MSG(chain_id);
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THROW(APDU_RESPONSE_INVALID_DATA);
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}
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offset += 4;
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dataLength -= 4;
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error = check_signature_with_pubkey("ERC20 Token Info",
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hash,
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sizeof(hash),
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LEDGER_SIGNATURE_PUBLIC_KEY,
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sizeof(LEDGER_SIGNATURE_PUBLIC_KEY),
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#ifdef HAVE_LEDGER_PKI
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CERTIFICATE_PUBLIC_KEY_USAGE_COIN_META,
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#endif
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(uint8_t *) (workBuffer + offset),
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dataLength);
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#ifndef HAVE_BYPASS_SIGNATURES
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if (error != CX_OK) {
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THROW(APDU_RESPONSE_INVALID_DATA);
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}
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#endif
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G_io_apdu_buffer[0] = tmpCtx.transactionContext.currentAssetIndex;
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validate_current_asset_info();
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U2BE_ENCODE(G_io_apdu_buffer, 1, APDU_RESPONSE_OK);
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io_exchange(CHANNEL_APDU | IO_RETURN_AFTER_TX, 3);
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}
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