// Reads untill the end of the line, returns a
// chunk header size if it sees it.
int HttpTcpConnection::readChunkHeader()
{
char line[100];
char * start = line;
char * end = NULL;
// Reads untill the end of the line,
// resulting line buffer will be null
// terminated without including new lines
// \r\n
if (readLine(line, sizeof(line)) > 0)
{
// Trim string, cut at first space
end = strchr(line, ' ');
if (end != NULL)
line[end - start] = '\0'; // make null
// convert the resulting hex string
// to a number
return hex2decimal(line);
}
return HTTP_RECV_CHNK_ERROR;
}
/* Compare the binary fingerprint (hash of host key) with the
* host_key_check parameter.
*/
static int compare_fingerprint(const unsigned char *fingerprint, size_t len,
const char *host_key_check)
{
unsigned c;
while (len > 0) {
while (*host_key_check == ':')
host_key_check++;
if (!qemu_isxdigit(host_key_check[0]) ||
!qemu_isxdigit(host_key_check[1]))
return 1;
c = hex2decimal(host_key_check[0]) * 16 +
hex2decimal(host_key_check[1]);
if (c - *fingerprint != 0)
return c - *fingerprint;
fingerprint++;
len--;
host_key_check += 2;
}
return *host_key_check - '\0';
}
void main() {
char* hex = "49276d206b696c6c696e6720796f757220627261696e206c696b65206120706f69736f6e6f7573206d757368726f6f6d";
mpz_t decimal;
mpz_init(decimal);
int exponent = 0;
for (int i = strlen(hex)-1; i >= 0; i--) {
int number = hex2decimal(hex[i]);
// decimal += number * (int)Math.pow(16, exponent);
mpz_t power;
// mpz_t must be initialized before mpz_ui_pow_ui()
mpz_init(power);
mpz_ui_pow_ui(power, 16, exponent);
mpz_addmul_ui(decimal, power, number);
// printf("hex: %c, number: %d, exponent: %d, decimal: ", hex[i], number, exponent);
// mpz_out_str(stdout, 10, decimal);
// printf("\n");
exponent += 1;
}
char* builder = malloc(sizeof(strlen(hex)));
int divider = 64;
mpz_t number;
mpz_init_set(number, decimal);
int index = 0;
while (mpz_cmp_ui(number, divider) > 0) {
mpz_t quotient;
int remainder = mpz_tdiv_q_ui(quotient, number, divider);
char letter = decimal2base64(remainder);
builder[index] = letter;
index++;
mpz_set(number, quotient);
}
mpz_t quotient;
int remainder = mpz_tdiv_q_ui(quotient, number, divider);
char letter = decimal2base64(remainder);
builder[index] = letter;
index++;
builder[index] = '\0';
char* result = malloc(sizeof(strlen(builder)+1));
strcpy(result, builder);
reverse(result);
puts(result);
char* base64 = "SSdtIGtpbGxpbmcgeW91ciBicmFpbiBsaWtlIGEgcG9pc29ub3VzIG11c2hyb29t";
printf("hex: %s\n", hex);
printf("decimal: ");
mpz_out_str(stdout, 10, decimal);
printf("\n");
printf("base64: %s\n", base64);
printf(strcmp(result, base64) == 0 ? "passed\n" : "failed\n");
}