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ethereum: refactor into rlp_calculate_number_length

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This commit is contained in:
Pavol Rusnak 2018-10-19 16:10:14 +02:00
parent ae077971ec
commit d1256e3831
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GPG Key ID: 91F3B339B9A02A3D
1 changed files with 20 additions and 3 deletions
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23
firmware/ethereum.c
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@ -159,6 +159,24 @@ static int rlp_calculate_length(int length, uint8_t firstbyte)
}
}
static int rlp_calculate_number_length(uint32_t number)
{
if (number <= 0x7f) {
return 1;
}
else if (number <= 0xff) {
return 2;
}
else if (number <= 0xffff) {
return 3;
}
else if (number <= 0xffffff) {
return 4;
} else {
return 5;
}
}
static void send_request_chunk(void)
{
int progress = 1000 - (data_total > 1000000
@ -549,11 +567,10 @@ void ethereum_signing_init(EthereumSignTx *msg, const HDNode *node)
rlp_length += rlp_calculate_length(msg->value.size, msg->value.bytes[0]);
rlp_length += rlp_calculate_length(data_total, msg->data_initial_chunk.bytes[0]);
if (tx_type) {
rlp_length += rlp_calculate_length(1, tx_type);
rlp_length += rlp_calculate_number_length(tx_type);
}
if (chain_id) {
int length = chain_id < 0x100 ? 1: chain_id < 0x10000 ? 2: chain_id < 0x1000000 ? 3 : 4;
rlp_length += rlp_calculate_length(length, chain_id);
rlp_length += rlp_calculate_number_length(chain_id);
rlp_length += rlp_calculate_length(0, 0);
rlp_length += rlp_calculate_length(0, 0);
}