#include <stdio.h>
#include <stdlib.h>
#include <string.h>

char* crypto_cert_hash(X509* xcert, const char* hash, UINT32* fp_len, int* p_c)
{
	BYTE* fp;

	int a = *p_c - 20;
	int b = *p_c - 10;

	printf("sum=%d, a=%d, b=%d", *p_c, a, b);

	fp = crypto_cert_compute_hash(xcert, hash, fp_len);

	return fp;
}

char* crypto_cert_fingerprint_by_hash(X509* xcert, const char* hash, int* p_a, int* p_b)
{
	UINT32 fp_len, i;
	BYTE* fp;
	char* p;
	char* fp_buffer;

	int c = *p_a + *p_b;

	fp = crypto_cert_hash(xcert, hash, &fp_len, &c);
	if (!fp)
		return NULL;

	fp_buffer = calloc(fp_len * 3 + 1, sizeof(char));
	if (!fp_buffer)
		goto fail;

	p = fp_buffer;

	for (i = 0; i < (fp_len - 1); i++)
	{
		sprintf_s(p, (fp_len - i) * 3, "%02" PRIx8 ":", fp[i]);
		p = &fp_buffer[(i + 1) * 3];
	}

	sprintf_s(p, (fp_len - i) * 3, "%02" PRIx8 "", fp[i]);
fail:
	free(fp);

	return fp_buffer;
}

char* crypto_cert_fingerprint(X509* xcert, int* p_a, int* p_b)
{
	char* fp = crypto_cert_fingerprint_by_hash(xcert, "sha256", p_a, p_b);
	return fp;
}

rdpCertificateData* crypto_get_certificate_data(X509* xcert, const char* hostname, UINT16 port)
{
	char* issuer;
	char* subject;
	char* fp;
	rdpCertificateData* certdata;

	int a = 10;
	int b = 20;

	fp = crypto_cert_fingerprint(xcert, &a, &b);

	if (!fp)
		return NULL;

	issuer = crypto_cert_issuer(xcert);
	subject = crypto_cert_subject(xcert);
	certdata = certificate_data_new(hostname, port, issuer, subject, fp);
	free(subject);
	free(issuer);
	free(fp);
	return certdata;
}