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Improve error-handling of chain ID when parsing APDUs

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This commit is contained in:
Alexandre Paillier
2024-02-05 10:21:54 +01:00
parent 0f9bec8ec7
commit 91352af57c
5 changed files with 28 additions and 8 deletions
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10
src_features/provideErc20TokenInformation/cmd_provideTokenInfo.c
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@@ -3,6 +3,7 @@
#include "public_keys.h"
#include "common_ui.h"
#include "os_io_seproxyhal.h"
#include "network.h"
#ifdef HAVE_CONTRACT_NAME_IN_DESCRIPTOR
@@ -111,7 +112,7 @@ void handleProvideErc20TokenInformation(uint8_t p1,
UNUSED(tx);
uint32_t offset = 0;
uint8_t tickerLength;
uint32_t chainId;
uint64_t chain_id;
uint8_t hash[INT256_LENGTH];
cx_ecfp_public_key_t tokenKey;
@@ -141,12 +142,13 @@ void handleProvideErc20TokenInformation(uint8_t p1,
memmove(token->address, workBuffer + offset, 20);
offset += 20;
dataLength -= 20;
// TODO: Handle 64-bit long chain IDs
token->decimals = U4BE(workBuffer, offset);
offset += 4;
dataLength -= 4;
chainId = U4BE(workBuffer, offset);
if ((chainConfig->chainId != ETHEREUM_MAINNET_CHAINID) && (chainConfig->chainId != chainId)) {
PRINTF("ChainId token mismatch: %d vs %d\n", chainConfig->chainId, chainId);
chain_id = U4BE(workBuffer, offset);
if (!app_compatible_with_chain_id(&chain_id)) {
UNSUPPORTED_CHAIN_ID_MSG(chain_id);
THROW(0x6A80);
}
offset += 4;