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Move rlp utils to dedicated file

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This commit is contained in:
Francois Beutin
2024-01-15 18:50:25 +01:00
parent 04d0fde47a
commit 1155bd2df0
5 changed files with 151 additions and 99 deletions
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83
src/ethUtils.c
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@@ -34,89 +34,6 @@
#include "ethUstream.h"
#include "network.h"
bool rlpCanDecode(uint8_t *buffer, uint32_t bufferLength, bool *valid) {
if (*buffer <= 0x7f) {
} else if (*buffer <= 0xb7) {
} else if (*buffer <= 0xbf) {
if (bufferLength < (1 + (*buffer - 0xb7))) {
return false;
}
if (*buffer > 0xbb) {
*valid = false; // arbitrary 32 bits length limitation
return true;
}
} else if (*buffer <= 0xf7) {
} else {
if (bufferLength < (1 + (*buffer - 0xf7))) {
return false;
}
if (*buffer > 0xfb) {
*valid = false; // arbitrary 32 bits length limitation
return true;
}
}
*valid = true;
return true;
}
bool rlpDecodeLength(uint8_t *buffer, uint32_t *fieldLength, uint32_t *offset, bool *list) {
if (*buffer <= 0x7f) {
*offset = 0;
*fieldLength = 1;
*list = false;
} else if (*buffer <= 0xb7) {
*offset = 1;
*fieldLength = *buffer - 0x80;
*list = false;
} else if (*buffer <= 0xbf) {
*offset = 1 + (*buffer - 0xb7);
*list = false;
switch (*buffer) {
case 0xb8:
*fieldLength = *(buffer + 1);
break;
case 0xb9:
*fieldLength = (*(buffer + 1) << 8) + *(buffer + 2);
break;
case 0xba:
*fieldLength = (*(buffer + 1) << 16) + (*(buffer + 2) << 8) + *(buffer + 3);
break;
case 0xbb:
*fieldLength = (*(buffer + 1) << 24) + (*(buffer + 2) << 16) +
(*(buffer + 3) << 8) + *(buffer + 4);
break;
default:
return false; // arbitrary 32 bits length limitation
}
} else if (*buffer <= 0xf7) {
*offset = 1;
*fieldLength = *buffer - 0xc0;
*list = true;
} else {
*offset = 1 + (*buffer - 0xf7);
*list = true;
switch (*buffer) {
case 0xf8:
*fieldLength = *(buffer + 1);
break;
case 0xf9:
*fieldLength = (*(buffer + 1) << 8) + *(buffer + 2);
break;
case 0xfa:
*fieldLength = (*(buffer + 1) << 16) + (*(buffer + 2) << 8) + *(buffer + 3);
break;
case 0xfb:
*fieldLength = (*(buffer + 1) << 24) + (*(buffer + 2) << 16) +
(*(buffer + 3) << 8) + *(buffer + 4);
break;
default:
return false; // arbitrary 32 bits length limitation
}
}
return true;
}
bool getEthAddressFromKey(cx_ecfp_public_key_t *publicKey, uint8_t *out, cx_sha3_t *sha3Context) {
uint8_t hashAddress[INT256_LENGTH];