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yaronvel/nested_rlp.c

Created July 10, 2019 09:22
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nested_rlp.c
#include <stdio.h>
#include <string.h>
const char* fields[] = {
"parentHash",
"ommersHash",
"beneficiary",
"stateRoot",
"transactionsRoot",
"receiptsRoot",
"logsBloom",
"difficulty",
"number",
"gasLimit",
"gasUsed",
"timestamp",
"extraData",
"mixHash",
"nonce"
};
typedef unsigned int uint;
typedef unsigned int bool;
#define TRUE 1
#define FALSE 0
typedef struct _rlp_elem {
unsigned char* content;
uint len;
struct _rlp_elem* list;
bool is_list;
struct _rlp_elem* next;
} rlp_elem;
/*****************************************************************************/
static rlp_elem* get_n_elem(rlp_elem* list, uint n) {
uint i;
rlp_elem* curr = list;
for(i = 0 ; i < n ; i++) {
if(curr->next == NULL) return NULL;
curr = curr->next;
}
return curr;
}
/*****************************************************************************/
static uint decode_single_byte(unsigned char* input, rlp_elem* output) {
output->content = input;
output->len = 1;
output->is_list = FALSE;
return 1;
}
/*****************************************************************************/
static uint decode_number(unsigned char* input, uint len) {
uint i, result;
result = 0;
for(i = 0 ; i < len ; i++) {
result = result << 8;
result += (unsigned char)input[i];
}
return result;
}
/*****************************************************************************/
static uint decode_string(unsigned char* input, rlp_elem* output) {
unsigned char first_byte = input[0];
uint len_num_bytes;
uint string_len;
output->is_list = FALSE;
if(first_byte <= 0xb7) {
output->len = first_byte - 0x80;
output->content = input + 1;
len_num_bytes = 1;
}
else {
len_num_bytes = first_byte - 0xb7;
string_len = decode_number(input + 1, len_num_bytes);
output->len = string_len;
output->content = input + 1 + len_num_bytes;
len_num_bytes++;
}
return output->len + len_num_bytes;
}
/*****************************************************************************/
static uint decode_list(unsigned char* input, rlp_elem* list, rlp_elem** scrath_pad) {
unsigned char first_byte = input[0];
uint len_num_bytes;
uint list_len;
uint elm_ind;
uint elm_len;
uint outputs_ind;
unsigned char* current_input = input;
rlp_elem* prev = NULL;
rlp_elem* curr;
//printf("decode list start %u\n", cntr++);
if(first_byte <= 0xf7) {
list_len = first_byte - 0xc0;
len_num_bytes = 0;
current_input = input + 1;
}
else {
len_num_bytes = first_byte - 0xf7;
list_len = decode_number(input + 1, len_num_bytes);
current_input = input + 1 + len_num_bytes;
}
//printf("list len %u\n", list_len);
outputs_ind = 0;
list->is_list = TRUE;
curr = list->list = (*scrath_pad)++;
for(elm_ind = 0 ; /*elm_ind < list_len*/ current_input < input + list_len + len_num_bytes + 1 /* elm_ind < 20*/ ; elm_ind++)
{
first_byte = current_input[0];
memset(curr, 0x00, sizeof(rlp_elem));
if(first_byte <= 0x7f) elm_len = decode_single_byte(current_input,curr);
else if(first_byte <= 0xbf) elm_len = decode_string(current_input,curr);
else {
curr->list = (*scrath_pad)++;
memset(curr->list, 0x00, sizeof(rlp_elem));
elm_len = decode_list(current_input,
curr,
scrath_pad);
}
current_input += elm_len;
outputs_ind += 1;
if(prev != NULL) prev->next = curr;
prev = curr;
curr = (*scrath_pad)++;
}
//printf("decode list end %u\n", cntr--);
return list_len + len_num_bytes + 1;
}
/*****************************************************************************/
static uint remove_last_field_from_rlp(unsigned char* rlp, uint field_len) {
uint field_len_field_len;
uint rlp_org_len;
uint rlp_final_len;
uint rlp_len_num_bytes;
if(rlp[0] <= 0xf7) printf("error: rlp is too short\n");
rlp_len_num_bytes = rlp[0] - 0xf7;
rlp_org_len = decode_number(rlp + 1, rlp_len_num_bytes);
if(field_len >= 55) printf("error: unexpected field_len\n");
if(rlp_org_len <= 55 - field_len) printf("error: rlp is too short\n");
if(field_len == 0) field_len_field_len = 0; // would happen once evey 2^64 blocks...
else if(field_len <= 55) field_len_field_len = 1;
else printf("error: unexpected field_len\n");
rlp_final_len = rlp_org_len - (field_len + field_len_field_len);
// make sure number of bytes wasn't chage
if(rlp_final_len <= 256) printf("error: unexpcted rlp len\n");
if(rlp_org_len >= 256 * 256) printf("error: unexpecpted rlp len\n");
// new length is exactly 2 bytes
rlp[1] = rlp_final_len >> 8;
rlp[2] = rlp_final_len & 0xFF;
return rlp_final_len + 3;
}
/*****************************************************************************/
/* tests */
/*****************************************************************************/
static void print_elem(const char* name, rlp_elem* elem) {
uint i;
if(elem->is_list){
printf("list start\n");
print_elem(name, elem->list);
}
else {
for(i = 0 ; i < elem->len ;i++) {
printf("%02X", elem->content[i]);
}
printf("\n");
}
if(elem->next == NULL) printf("list end\n");
else print_elem(name, elem->next);
}
/*****************************************************************************/
static void print_single_elem(const char* name, rlp_elem* elem) {
uint i;
printf("%s: ", name);
if(elem == NULL) {
printf("NULL\n");
return;
}
for(i = 0 ; i < elem->len ;i++) {
printf("%02X", elem->content[i]);
}
printf("\n");
}
#define CHECK_RLP_RESULT(_rlp_items, _index, _value){\
if(get_n_elem(_rlp_items,_index)->len != sizeof(_value)) return (-1 * 2 * (_index) - 1);\
if(memcmp(get_n_elem(_rlp_items,_index)->content, (_value), sizeof(_value))) return (-1 * 2 * (_index) - 2);\
}
/*****************************************************************************/
static int test1() {
unsigned char rlp_data[] =
{0xf9, 0x02, 0x10, 0xa0, 0x4d, 0x1e, 0x1f, 0x82, 0x40, 0x0b, 0x58, 0x55, 0xf1, 0xec, 0xc1, 0xf6, 0x9e, 0xe5, 0x5b, 0x94, 0xe6, 0x3f, 0x66, 0x8f, 0xf4, 0x41, 0xff, 0xf5, 0xab, 0x5c, 0x54, 0x5e, 0x39, 0xa1, 0x8d, 0x0a, 0xa0, 0xfc, 0x45, 0x8f, 0x61, 0x6c, 0x83, 0x92, 0x48, 0xdc, 0x81, 0x59, 0xb9, 0x1c, 0x6a, 0x57, 0xa0, 0xab, 0xb5, 0xdf, 0x8f, 0x5c, 0xdf, 0x87, 0x49, 0x03, 0xe3, 0xbe, 0x8f, 0x47, 0x84, 0x77, 0x89, 0x94, 0x82, 0x9b, 0xd8, 0x24, 0xb0, 0x16, 0x32, 0x6a, 0x40, 0x1d, 0x08, 0x3b, 0x33, 0xd0, 0x92, 0x29, 0x33, 0x33, 0xa8, 0x30, 0xa0, 0x39, 0x69, 0x11, 0x34, 0x5f, 0xd5, 0xb3, 0x4b, 0x31, 0x89, 0x88, 0x2e, 0x15, 0x73, 0xb8, 0x7f, 0xa6, 0x4a, 0x11, 0xa3, 0x4d, 0x81, 0x0b, 0xbd, 0x77, 0xcb, 0xb3, 0xeb, 0xb4, 0xa1, 0x30, 0x11, 0xa0, 0x1e, 0x93, 0x38, 0x5b, 0xe2, 0x50, 0x04, 0x7b, 0xd0, 0xb5, 0xfc, 0xad, 0x90, 0x4c, 0x42, 0xe4, 0xbf, 0x4c, 0xed, 0x18, 0xda, 0xcc, 0x72, 0x9f, 0xc6, 0x8c, 0xd4, 0xe3, 0x87, 0x17, 0x27, 0xf0, 0xa0, 0x48, 0x52, 0xb4, 0x18, 0x9d, 0x25, 0x34, 0xc3, 0x79, 0xb1, 0x36, 0x5d, 0xf9, 0xbe, 0x0a, 0x51, 0xc1, 0x7f, 0x09, 0xf7, 0xd0, 0x34, 0x56, 0x13, 0x04, 0x0b, 0x1f, 0xa0, 0x20, 0x48, 0x18, 0x06, 0xb9, 0x01, 0x00, 0x04, 0x00, 0x20, 0x00, 0x00, 0x42, 0x00, 0x10, 0x02, 0x00, 0x40, 0x00, 0x08, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x20, 0x01, 0x68, 0x02, 0x00, 0x00, 0x00, 0x00, 0x80, 0x80, 0x00, 0x90, 0x00, 0x80, 0x00, 0x00, 0x4c, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x80, 0x03, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x09, 0x00, 0x04, 0x21, 0x00, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0xa0, 0x4d, 0x00, 0x00, 0x00, 0x01, 0xa4, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x20, 0xa0, 0x00, 0x00, 0x00, 0x00, 0x40, 0x60, 0x00, 0x00, 0x40, 0x00, 0x00, 0x02, 0x20, 0x00, 0x00, 0x01, 0x06, 0x00, 0x00, 0x04, 0x30, 0x21, 0x11, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20, 0x80, 0x20, 0x00, 0x20, 0x00, 0x00, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00, 0x90, 0x40, 0x00, 0x00, 0x01, 0x00, 0x00, 0x80, 0x00, 0x04, 0x80, 0x02, 0x00, 0x02, 0x01, 0x02, 0x00, 0x00, 0x08, 0x04, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00, 0x18, 0x00, 0x40, 0x40, 0x00, 0x80, 0x80, 0x20, 0x00, 0x14, 0x12, 0x00, 0x00, 0x80, 0x10, 0x00, 0x01, 0x30, 0x00, 0x00, 0x11, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x01, 0x05, 0x20, 0x00, 0x00, 0x00, 0x40, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0x01, 0x0a, 0x42, 0x04, 0x00, 0x00, 0x00, 0x08, 0x00, 0x00, 0x11, 0x00, 0x00, 0x10, 0x00, 0x04, 0x00, 0x00, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, 0xa2, 0x00, 0x10, 0x20, 0x00, 0x04, 0x00, 0x00, 0x00, 0x80, 0x84, 0x02, 0x10, 0x00, 0x01, 0x10, 0x02, 0x80, 0x87, 0x05, 0x8d, 0x4d, 0x00, 0x3a, 0x5e, 0xae, 0x83, 0x47, 0xb7, 0x60, 0x83, 0x66, 0x25, 0xf7, 0x83, 0x66, 0x07, 0xa1, 0x84, 0x5a, 0x2b, 0x46, 0xbb, 0x8f, 0xe4, 0xb8, 0x83, 0xe5, 0xbd, 0xa9, 0xe7, 0xa5, 0x9e, 0xe4, 0xbb, 0x99, 0xe9, 0xb1, 0xbc, 0xa0, 0x52, 0x47, 0x69, 0x1a, 0xb0, 0x95, 0x3f, 0xa5, 0xc5, 0xc2, 0xc8, 0x4b, 0x0b, 0x14, 0x2b, 0x6d, 0x62, 0xe9, 0xdc, 0x5f, 0x35, 0xa8, 0x65, 0xed, 0x19, 0x7b, 0x9c, 0xd3, 0x73, 0x6a, 0xf6, 0xf1, 0x88, 0x85, 0x72, 0x87, 0x40, 0x01, 0x60, 0x21, 0x8d};
const unsigned char parnetHash[32] = {
0x4d,0x1e,0x1f,0x82,0x40,0x0b,0x58,0x55,0xf1,0xec,0xc1,0xf6,0x9e,
0xe5,0x5b,0x94,0xe6,0x3f,0x66,0x8f,0xf4,0x41,0xff,0xf5,0xab,0x5c,
0x54,0x5e,0x39,0xa1,0x8d,0x0a
};
const unsigned char ommersHash[32] = {
0xfc, 0x45, 0x8f, 0x61, 0x6c, 0x83, 0x92, 0x48, 0xdc, 0x81, 0x59, 0xb9, 0x1c,
0x6a, 0x57, 0xa0, 0xab, 0xb5, 0xdf, 0x8f, 0x5c, 0xdf, 0x87, 0x49, 0x03, 0xe3,
0xbe, 0x8f, 0x47, 0x84, 0x77, 0x89
};
const unsigned char beneficiary[20] = {
0x82, 0x9B, 0xD8, 0x24, 0xB0, 0x16, 0x32, 0x6A, 0x40, 0x1D, 0x08, 0x3B, 0x33,
0xD0, 0x92, 0x29, 0x33, 0x33, 0xA8, 0x30
};
const unsigned char stateRoot[32] = {
0x39, 0x69, 0x11, 0x34, 0x5F, 0xD5, 0xB3, 0x4B, 0x31, 0x89, 0x88, 0x2E, 0x15,
0x73, 0xB8, 0x7F, 0xA6, 0x4A, 0x11, 0xA3, 0x4D, 0x81, 0x0B, 0xBD, 0x77, 0xCB,
0xB3, 0xEB, 0xB4, 0xA1, 0x30, 0x11
};
const unsigned char transactionRoot[32] = {
0x1E, 0x93, 0x38, 0x5B, 0xE2, 0x50, 0x04, 0x7B, 0xD0, 0xB5, 0xFC, 0xAD, 0x90,
0x4C, 0x42, 0xE4, 0xBF, 0x4C, 0xED, 0x18, 0xDA, 0xCC, 0x72, 0x9F, 0xC6, 0x8C,
0xD4, 0xE3, 0x87, 0x17, 0x27, 0xF0
};
const unsigned char receiptsRoot[32] = {
0x48, 0x52, 0xB4, 0x18, 0x9D, 0x25, 0x34, 0xC3, 0x79, 0xB1, 0x36, 0x5D, 0xF9,
0xBE, 0x0A, 0x51, 0xC1, 0x7F, 0x09, 0xF7, 0xD0, 0x34, 0x56, 0x13, 0x04, 0x0B,
0x1F, 0xA0, 0x20, 0x48, 0x18, 0x06
};
const unsigned char logsBloom[256] = {
0x04, 0x00, 0x20, 0x00, 0x00, 0x42, 0x00, 0x10, 0x02, 0x00, 0x40, 0x00, 0x08, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x20, 0x01, 0x68, 0x02, 0x00, 0x00, 0x00, 0x00, 0x80, 0x80, 0x00, 0x90, 0x00, 0x80, 0x00, 0x00, 0x4C, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x80, 0x03, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x09, 0x00, 0x04, 0x21, 0x00, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0xA0, 0x4D, 0x00, 0x00, 0x00, 0x01, 0xA4, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x20, 0xA0, 0x00, 0x00, 0x00, 0x00, 0x40, 0x60, 0x00, 0x00, 0x40, 0x00, 0x00, 0x02, 0x20, 0x00, 0x00, 0x01, 0x06, 0x00, 0x00, 0x04, 0x30, 0x21, 0x11, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20, 0x80, 0x20, 0x00, 0x20, 0x00, 0x00, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00, 0x90, 0x40, 0x00, 0x00, 0x01, 0x00, 0x00, 0x80, 0x00, 0x04, 0x80, 0x02, 0x00, 0x02, 0x01, 0x02, 0x00, 0x00, 0x08, 0x04, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00, 0x18, 0x00, 0x40, 0x40, 0x00, 0x80, 0x80, 0x20, 0x00, 0x14, 0x12, 0x00, 0x00, 0x80, 0x10, 0x00, 0x01, 0x30, 0x00, 0x00, 0x11, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x01, 0x05, 0x20, 0x00, 0x00, 0x00, 0x40, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0x01, 0x0A, 0x42, 0x04, 0x00, 0x00, 0x00, 0x08, 0x00, 0x00, 0x11, 0x00, 0x00, 0x10, 0x00, 0x04, 0x00, 0x00, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, 0xA2, 0x00, 0x10, 0x20, 0x00, 0x04, 0x00, 0x00, 0x00, 0x80, 0x84, 0x02, 0x10, 0x00, 0x01, 0x10, 0x02, 0x80
};
const unsigned char difficulty[] = {
0x05, 0x8D, 0x4D, 0x00, 0x3A, 0x5E, 0xAE
};
const unsigned char blockNumber[3] = {
0x47, 0xB7, 0x60
};
const unsigned char gasLimit[3] = {
0x66, 0x25, 0xF7
};
const unsigned char gasUsed[3] = {
0x66, 0x07, 0xA1
};
const unsigned char timestamp[4] = {
0x5A, 0x2B, 0x46, 0xBB
};
const unsigned char extraData[] = {
0xE4, 0xB8, 0x83, 0xE5, 0xBD, 0xA9, 0xE7, 0xA5, 0x9E, 0xE4, 0xBB, 0x99, 0xE9, 0xB1, 0xBC
};
const unsigned char mixHash[] = {
0x52, 0x47, 0x69, 0x1A, 0xB0, 0x95, 0x3F, 0xA5, 0xC5, 0xC2, 0xC8, 0x4B, 0x0B, 0x14, 0x2B,
0x6D, 0x62, 0xE9, 0xDC, 0x5F, 0x35, 0xA8, 0x65, 0xED, 0x19, 0x7B, 0x9C, 0xD3, 0x73, 0x6A, 0xF6, 0xF1
};
const unsigned char nonce[] = {
0x85, 0x72, 0x87, 0x40, 0x01, 0x60, 0x21, 0x8D
};
rlp_elem elem[20] = {0};
rlp_elem* list = elem;
rlp_elem* elem_ptr = elem + 1;
uint num_elem, i;
decode_list(rlp_data, list, &elem_ptr);
uint trim_len;
print_single_elem("parentHash", get_n_elem(list->list,0));
print_single_elem("ommersHash", get_n_elem(list->list,1));
print_single_elem("beneficiary", get_n_elem(list->list,2));
print_single_elem("stateRoot", get_n_elem(list->list,3));
print_single_elem("transactionsRoot", get_n_elem(list->list,4));
print_single_elem("receiptsRoot", get_n_elem(list->list,5));
print_single_elem("logsBloom", get_n_elem(list->list,6));
print_single_elem("difficulty", get_n_elem(list->list,7));
print_single_elem("number", get_n_elem(list->list,8));
print_single_elem("gasLimit", get_n_elem(list->list,9));
print_single_elem("gasUsed", get_n_elem(list->list,10));
print_single_elem("timestamp", get_n_elem(list->list,11));
print_single_elem("extraData", get_n_elem(list->list,12));
print_single_elem("mixHash", get_n_elem(list->list,13));
print_single_elem("nonce", get_n_elem(list->list,14));
CHECK_RLP_RESULT(list->list, 0, parnetHash);
CHECK_RLP_RESULT(list->list, 1, ommersHash);
CHECK_RLP_RESULT(list->list, 2, beneficiary);
CHECK_RLP_RESULT(list->list, 3, stateRoot);
CHECK_RLP_RESULT(list->list, 4, transactionRoot);
CHECK_RLP_RESULT(list->list, 5, receiptsRoot);
CHECK_RLP_RESULT(list->list, 6, logsBloom);
CHECK_RLP_RESULT(list->list, 7, difficulty);
CHECK_RLP_RESULT(list->list, 8, blockNumber);
CHECK_RLP_RESULT(list->list, 9, gasLimit);
CHECK_RLP_RESULT(list->list, 10, gasUsed);
CHECK_RLP_RESULT(list->list, 11, timestamp);
CHECK_RLP_RESULT(list->list, 12, extraData);
CHECK_RLP_RESULT(list->list, 13, mixHash);
CHECK_RLP_RESULT(list->list, 14, nonce);
trim_len = remove_last_field_from_rlp(rlp_data, get_n_elem(list->list,14)->len);
if(trim_len != (sizeof(rlp_data) - 9)) return -20;
trim_len = remove_last_field_from_rlp(rlp_data, get_n_elem(list->list,13)->len);
if(trim_len != (sizeof(rlp_data) - 42)) return -21;
memset(elem, 0x00, sizeof(elem));
list = elem;
elem_ptr = elem + 1;
decode_list(rlp_data, list, &elem_ptr);
print_single_elem("parentHash", get_n_elem(list->list,0));
print_single_elem("ommersHash", get_n_elem(list->list,1));
print_single_elem("beneficiary", get_n_elem(list->list,2));
print_single_elem("stateRoot", get_n_elem(list->list,3));
print_single_elem("transactionsRoot", get_n_elem(list->list,4));
print_single_elem("receiptsRoot", get_n_elem(list->list,5));
print_single_elem("logsBloom", get_n_elem(list->list,6));
print_single_elem("difficulty", get_n_elem(list->list,7));
print_single_elem("number", get_n_elem(list->list,8));
print_single_elem("gasLimit", get_n_elem(list->list,9));
print_single_elem("gasUsed", get_n_elem(list->list,10));
print_single_elem("timestamp", get_n_elem(list->list,11));
print_single_elem("extraData", get_n_elem(list->list,12));
print_single_elem("mixHash", get_n_elem(list->list,13));
print_single_elem("nonce", get_n_elem(list->list,14));
CHECK_RLP_RESULT(list->list, 0, parnetHash);
CHECK_RLP_RESULT(list->list, 1, ommersHash);
CHECK_RLP_RESULT(list->list, 2, beneficiary);
CHECK_RLP_RESULT(list->list, 3, stateRoot);
CHECK_RLP_RESULT(list->list, 4, transactionRoot);
CHECK_RLP_RESULT(list->list, 5, receiptsRoot);
CHECK_RLP_RESULT(list->list, 6, logsBloom);
CHECK_RLP_RESULT(list->list, 7, difficulty);
CHECK_RLP_RESULT(list->list, 8, blockNumber);
CHECK_RLP_RESULT(list->list, 9, gasLimit);
CHECK_RLP_RESULT(list->list, 10, gasUsed);
CHECK_RLP_RESULT(list->list, 11, timestamp);
CHECK_RLP_RESULT(list->list, 12, extraData);
//CHECK_RLP_RESULT(list->list, 13, mixHash);
//CHECK_RLP_RESULT(list->list, 14, nonce);
return 0;
}
#if 0
static void test2() {
unsigned char rlp[] =
{0xf9, 0x02, 0x18, 0xa0, 0xb4, 0x95, 0xa1, 0xd7, 0xe6, 0x66, 0x31, 0x52, 0xae, 0x92, 0x70, 0x8d, 0xa4, 0x84, 0x33, 0x37, 0xb9, 0x58, 0x14, 0x60, 0x15, 0xa2, 0x80, 0x2f, 0x41, 0x93, 0xa4, 0x10, 0x04, 0x46, 0x98, 0xc9, 0xa0, 0x6b, 0x17, 0xb9, 0x38, 0xc6, 0xe4, 0xef, 0x18, 0xb2, 0x6a, 0xd8, 0x1b, 0x9c, 0xa3, 0x51, 0x5f, 0x27, 0xfd, 0x9c, 0x4e, 0x82, 0xaa, 0xc5, 0x6a, 0x1f, 0xd8, 0xea, 0xb2, 0x88, 0x78, 0x5e, 0x41, 0x94, 0x50, 0x88, 0xd6, 0x23, 0xba, 0x0f, 0xcf, 0x01, 0x31, 0xe0, 0x89, 0x7a, 0x91, 0x73, 0x4a, 0x4d, 0x83, 0x59, 0x6a, 0xa0, 0xa0, 0x76, 0xab, 0x0b, 0x89, 0x9e, 0x83, 0x87, 0x43, 0x6f, 0xf2, 0x65, 0x8e, 0x29, 0x88, 0xf8, 0x3c, 0xbf, 0x1a, 0xf1, 0x59, 0x0b, 0x9f, 0xe9, 0xfe, 0xca, 0x37, 0x14, 0xf8, 0xd1, 0x82, 0x49, 0x40, 0xa0, 0x56, 0xe8, 0x1f, 0x17, 0x1b, 0xcc, 0x55, 0xa6, 0xff, 0x83, 0x45, 0xe6, 0x92, 0xc0, 0xf8, 0x6e, 0x5b, 0x48, 0xe0, 0x1b, 0x99, 0x6c, 0xad, 0xc0, 0x01, 0x62, 0x2f, 0xb5, 0xe3, 0x63, 0xb4, 0x21, 0xa0, 0x56, 0xe8, 0x1f, 0x17, 0x1b, 0xcc, 0x55, 0xa6, 0xff, 0x83, 0x45, 0xe6, 0x92, 0xc0, 0xf8, 0x6e, 0x5b, 0x48, 0xe0, 0x1b, 0x99, 0x6c, 0xad, 0xc0, 0x01, 0x62, 0x2f, 0xb5, 0xe3, 0x63, 0xb4, 0x21, 0xb9, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x85, 0x03, 0xfe, 0x80, 0x2f, 0xfe, 0x03, 0x82, 0x13, 0x88, 0x80, 0x84, 0x55, 0xba, 0x42, 0x60, 0xa0, 0x47, 0x65, 0x74, 0x68, 0x2f, 0x76, 0x31, 0x2e, 0x30, 0x2e, 0x30, 0x2d, 0x66, 0x63, 0x37, 0x39, 0x64, 0x33, 0x32, 0x64, 0x2f, 0x6c, 0x69, 0x6e, 0x75, 0x78, 0x2f, 0x67, 0x6f, 0x31, 0x2e, 0x34, 0xa0, 0x65, 0xe1, 0x2e, 0xec, 0x23, 0xfe, 0x65, 0x55, 0xe6, 0xbc, 0xdb, 0x47, 0xaa, 0x25, 0x26, 0x9a, 0xe1, 0x06, 0xe5, 0xf1, 0x6b, 0x54, 0xe1, 0xe9, 0x2d, 0xce, 0xe2, 0x5e, 0x1c, 0x8a, 0xd0, 0x37, 0x88, 0x2e, 0x93, 0x44, 0xe0, 0xcb, 0xde, 0x83, 0xce};
rlp_item items[15];
decode_list(rlp, items);
print_elm("parentHash", &items[0]);
print_elm("ommersHash", &items[1]);
print_elm("beneficiary", &items[2]);
print_elm("stateRoot", &items[3]);
print_elm("transactionsRoot", &items[4]);
print_elm("receiptsRoot", &items[5]);
print_elm("logsBloom", &items[6]);
print_elm("difficulty", &items[7]);
print_elm("number", &items[8]);
print_elm("gasLimit", &items[9]);
print_elm("gasUsed", &items[10]);
print_elm("timestamp", &items[11]);
print_elm("extraData", &items[12]);
print_elm("mixHash", &items[13]);
print_elm("nonce", &items[14]);
}
/*****************************************************************************/
#endif
static void test6() {
unsigned char rlp[] =
{0xf9,0x01,0xa7,0x01,0x83,0x1d,0xe5,0xd2,0xb9,0x01,0x00,0x00,0x02,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x10,0x00,0x00,0x00,0x00,0x00,0x00,0x40,0x00,0x00,0x02,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x08,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x40,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x10,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x40,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x08,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x10,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x02,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x40,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xf8,0x9d,0xf8,0x9b,0x94,0xdd,0x97,0x4d,0x5c,0x2e,0x29,0x28,0xde,0xa5,0xf7,0x1b,0x98,0x25,0xb8,0xb6,0x46,0x68,0x6b,0xd2,0x00,0xf8,0x63,0xa0,0xdd,0xf2,0x52,0xad,0x1b,0xe2,0xc8,0x9b,0x69,0xc2,0xb0,0x68,0xfc,0x37,0x8d,0xaa,0x95,0x2b,0xa7,0xf1,0x63,0xc4,0xa1,0x16,0x28,0xf5,0x5a,0x4d,0xf5,0x23,0xb3,0xef,0xa0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x9c,0x13,0x4f,0x34,0xbf,0x05,0x91,0xc1,0xdb,0x52,0xc8,0x45,0x54,0x19,0xbe,0xe2,0x68,0x89,0x6a,0x6e,0xa0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xf2,0x88,0x90,0xdb,0xed,0x02,0xa2,0xea,0x3a,0xb9,0x76,0xc7,0xa2,0x95,0x3e,0xd5,0x63,0x30,0x7c,0xa0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x1b,0xc1,0x6d,0x67,0x4e,0xc8,0x00,0x00};
rlp_elem elem[1000] = {0};
rlp_elem* list = elem;
rlp_elem* elem_ptr = elem + 1;
uint num_elem, i;
decode_list(rlp, list, &elem_ptr);
print_elem("", list->list);
rlp_elem* num3 = list->list->next->next->next;
rlp_elem* num3_0 = num3->list->list;
rlp_elem* num3_0_1 = num3_0->next;
rlp_elem* num3_0_1_0 = num3_0_1->list;
for(i = 0 ; i < num3_0_1_0->len ;i++) {
printf("%02X", num3_0_1_0->content[i]);
}
printf("\n");
}
//item #3 in list (logs) -> item #0 in list (first event) -> item #1 in list (topics) -> item #0 (first topic = function signature)
/*****************************************************************************/
// mult start here
static unsigned __int128 decode_number128(unsigned char* input, uint len) {
uint i;
unsigned __int128 result;
result = 0;
for(i = 0 ; i < len ; i++) {
result = result << 8;
result += (unsigned char)input[i];
}
return result;
}
/*****************************************************************************/
static int check_pow(unsigned char* difficulty,
uint difficulty_len,
unsigned char* ethash,
unsigned __int128* result_lsb,
unsigned __int128* result_msb) {
unsigned __int128 difficulty_value = decode_number128(difficulty, difficulty_len);
unsigned __int128 ethash_value[4];
unsigned __int128 result[4];
unsigned __int128 max_uint64 = 0xFFFFFFFFFFFFFFFFL;
unsigned __int128 temp;
unsigned __int128 temp2;
uint i;
if(difficulty_len > 8) printf("error: unexpected difficulty len\n");
memset(result, 0x00, sizeof(result));
for(i = 0 ; i < 4; i++) ethash_value[i] = decode_number128(ethash + 8*i, 8);
temp = difficulty_value * ethash_value[3];
result[3] = temp & max_uint64;
result[2] = temp >> 64;
temp = difficulty_value * ethash_value[2];
temp2 = (temp & max_uint64) + result[2];
result[2] = temp2 & max_uint64;
result[1] = (temp2 >> 64) + (temp >> 64);
temp = difficulty_value * ethash_value[1];
temp2 = (temp & max_uint64) + result[1];
result[1] = temp2 & max_uint64;
result[0] = (temp2 >> 64) + (temp >> 64);;
temp = difficulty_value * ethash_value[0];
temp2 = (temp & max_uint64) + result[0];
result[0] = temp2 & max_uint64;
printf("0x%016lx%016lx%016lx%016lx\n", (long unsigned int)result[0] , (long unsigned int)result[1], (long unsigned int)result[2], (long unsigned int)result[3]);
if(result_lsb != NULL && result_msb != NULL) {
*result_lsb = result[3] | (result[2] << 64);
*result_msb = result[1] | (result[0] << 64);
}
return ((temp2 >> 64) + (temp >> 64)) == 0;
}
/*****************************************************************************/
static int check_pow_test1() {
unsigned char difficulty[] = {0x05, 0x8d, 0x4d, 0x00, 0x3a, 0x5e, 0xae};
unsigned char ethash[32] = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xf, 0x46, 0x85, 0xc4, 0x3f, 0x3d, 0xca, 0xa0, 0x1f, 0x90, 0x80, 0x7d, 0xd8, 0x42, 0x36, 0x88, 0xe5, 0xf7, 0xfd, 0xae, 0x78, 0x50, 0xb7, 0x80, 0xb8, 0xf};
unsigned __int128 result_lsb, result_msb, expected_result_lsb, expected_result_msb;
// result was calculated here https://defuse.ca/big-number-calculator.htm
expected_result_msb = (unsigned __int128)0x54cf0cbc0ab198d4L << 64 | 0x0ffa2c5eda6b3488L;
expected_result_lsb = (unsigned __int128)0xd5a05ec42eff1218L << 64 | 0x6e6f9ceab0789c32L;
if( ! check_pow(difficulty, sizeof(difficulty), ethash, &result_lsb, &result_msb) ) return -1;
if(result_msb != expected_result_msb) return -2;
if(result_lsb != expected_result_lsb) return -3;
printf("check_pow_test1 succesful\n");
return 0;
}
/*****************************************************************************/
static int check_pow_test2() {
unsigned char difficulty[] = {0x15, 0x8a, 0x9d, 0x31, 0x9b, 0x5d};
// 0x158a9d319b5d
unsigned char ethash[32] = {0x01, 0x02, 0xf0, 0xa0, 0xaa, 0xbb, 0xcf, 0x48, 0x85, 0xc4, 0x3e, 0x3d, 0xcb, 0xa7, 0x1f, 0x92, 0x80, 0x7e, 0xd4, 0x41, 0x36, 0x48, 0xe5, 0xff, 0x0d, 0xae, 0x78, 0x50, 0xb7, 0x80, 0xb8, 0xf3};
//0x0102f0a0aabbcf4885c43e3dcba71f92807ed4413648e5ff0dae7850b780b8f3
// result was calculated here https://defuse.ca/big-number-calculator.htm
// result = 0x15c9f1e45d2e773de1188aca16b761899ebb7451135586982cfcde13af9dc7477c07415147
// 256 bit result is 0x2e773de1188aca16b761899ebb7451135586982cfcde13af9dc7477c07415147. rest is overflow
unsigned __int128 result_lsb, result_msb, expected_result_lsb, expected_result_msb;
expected_result_msb = (unsigned __int128)0x2e773de1188aca16L << 64 | 0xb761899ebb745113L;
expected_result_lsb = (unsigned __int128)0x5586982cfcde13afL << 64 | 0x9dc7477c07415147L;
// overflow is expected
if( check_pow(difficulty, sizeof(difficulty), ethash, &result_lsb, &result_msb) ) return -1;
if(result_msb != expected_result_msb) return -2;
if(result_lsb != expected_result_lsb) return -3;
printf("check_pow_test2 succesful\n");
return 0;
}
/*****************************************************************************/
static int check_pow_test3() {
unsigned char difficulty[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
// 0xffffffffffffffff
unsigned char ethash[32] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
// 0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
// result was calculated here https://defuse.ca/big-number-calculator.htm
// result = 0xfffffffffffffffeffffffffffffffffffffffffffffffffffffffffffffffff0000000000000001
// 256 bit result is 0xffffffffffffffffffffffffffffffffffffffffffffffff0000000000000001. rest is overflow
unsigned __int128 result_lsb, result_msb, expected_result_lsb, expected_result_msb;
expected_result_msb = (unsigned __int128)0xffffffffffffffffL << 64 | 0xffffffffffffffffL;
expected_result_lsb = (unsigned __int128)0xffffffffffffffffL << 64 | 0x0000000000000001L;
// overflow is expected
if( check_pow(difficulty, sizeof(difficulty), ethash, &result_lsb, &result_msb) ) return -1;
if(result_msb != expected_result_msb) return -2;
if(result_lsb != expected_result_lsb) return -3;
printf("check_pow_test3 succesful\n");
return 0;
}
/*****************************************************************************/
int main() {
//printf("%s\n", test1() >= 0 ? "test succesful" : "test failed");
//test2();
// unsigned char difficulty[] = {0x05, 0x8d, 0x4d, 0x00, 0x3a, 0x5e, 0xae};
// unsigned char ethash[32] = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xf, 0x46, 0x85, 0xc4, 0x3f, 0x3d, 0xca, 0xa0, 0x1f, 0x90, 0x80, 0x7d, 0xd8, 0x42, 0x36, 0x88, 0xe5, 0xf7, 0xfd, 0xae, 0x78, 0x50, 0xb7, 0x80, 0xb8, 0xf};
/*
unsigned char difficulty[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
unsigned char ethash[32] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
printf("%d\n", check_pow(difficulty, sizeof(difficulty), ethash));
*/
/*
printf("%d\n", check_pow_test1());
printf("%d\n", check_pow_test2());
printf("%d\n", check_pow_test3());
*/
printf("%d\n", test1());
test6();
return 0;
}
/*****************************************************************************/
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