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This commit is contained in:
TamtamHero
2021-05-04 23:46:45 +02:00
parent 3a1cd33f74
commit ebc28881f7
1 changed files with 7 additions and 30 deletions
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37
src_plugins/eth2/eth2_plugin.c
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@@ -20,8 +20,9 @@ void getEth2PublicKey(uint32_t *bip32Path, uint8_t bip32PathLength, uint8_t *out
#define ETH2_WITHDRAWAL_CREDENTIALS_LENGTH 0x20
#define ETH2_SIGNATURE_LENGTH 0x60
#define DEPOSIT_CONTRACT_ADDRESS "0x00000000219ab540356cbb839cbe05303d7705fa"
#define DEPOSIT_CONTRACT_LENGTH sizeof(DEPOSIT_CONTRACT_ADDRESS)
static const uint8_t deposit_contract_address[] = {0x00, 0x00, 0x00, 0x00, 0x21, 0x9a, 0xb5,
0x40, 0x35, 0x6c, 0xbb, 0x83, 0x9c, 0xbe,
0x05, 0x30, 0x3d, 0x77, 0x05, 0xfa};
// Highest index for withdrawal derivation path.
#define INDEX_MAX 65536 // 2 ^ 16 : arbitrary value to protect from path attacks.
@@ -49,33 +50,7 @@ static int getEthDisplayableAddress(char *out, uint8_t *in, cx_sha3_t *sha3) {
uint8_t destinationLen = strlen(out) + 1; // Adding one to account for \0.
// Ensure address is in lowercase, to match DEPOSIT_CONTRACT_ADDRESS' case.
to_lowercase(out, destinationLen);
return (destinationLen);
}
static int check_deposit_contract(ethPluginInitContract_t *msg) {
txContent_t *content = msg->pluginSharedRO->txContent;
char destinationAddress[DEPOSIT_CONTRACT_LENGTH];
uint8_t destinationLen = getEthDisplayableAddress(destinationAddress,
content->destination,
msg->pluginSharedRW->sha3);
if (destinationLen != DEPOSIT_CONTRACT_LENGTH) {
PRINTF("eth2plugin: destination lengths differ. Expected %u got %u\n",
DEPOSIT_CONTRACT_LENGTH,
destinationLen);
return 0;
} else if (memcmp(destinationAddress, DEPOSIT_CONTRACT_ADDRESS, DEPOSIT_CONTRACT_LENGTH) != 0) {
PRINTF("eth2plugin: destination addresses differ. Expected %s got %s\n",
DEPOSIT_CONTRACT_ADDRESS,
destinationAddress);
return 0;
} else {
return 1;
}
return destinationLen;
}
void eth2_plugin_call(int message, void *parameters) {
@@ -83,7 +58,9 @@ void eth2_plugin_call(int message, void *parameters) {
case ETH_PLUGIN_INIT_CONTRACT: {
ethPluginInitContract_t *msg = (ethPluginInitContract_t *) parameters;
eth2_deposit_parameters_t *context = (eth2_deposit_parameters_t *) msg->pluginContext;
if (check_deposit_contract(msg) == 0) {
if (memcmp(deposit_contract_address,
msg->pluginSharedRO->txContent->destination,
sizeof(deposit_contract_address)) != 0) {
PRINTF("eth2plugin: failed to check deposit contract\n");
context->valid = 0;
msg->result = ETH_PLUGIN_RESULT_ERROR;