homebrewfilter/installer/source/title.c

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <limits.h>
#include <malloc.h>
#include <ogcsys.h>

#include "sha1.h"

#define round_up(x,n)	(-(-(x) & -(n)))

s32 Title_ZeroSignature(signed_blob *p_sig)
{
	u8 *ptr = (u8 *)p_sig;

	/* Fill signature with zeroes */
	memset(ptr + 4, 0, SIGNATURE_SIZE(p_sig) - 4);

	return 0;
}

s32 Title_FakesignTik(signed_blob *p_tik)
{
	tik *tik_data = NULL;
	u16 fill;

	/* Zero signature */
	Title_ZeroSignature(p_tik);

	/* Ticket data */
	tik_data = (tik *)SIGNATURE_PAYLOAD(p_tik);

	for (fill = 0; fill < USHRT_MAX; fill++) {
		sha1 hash;

		/* Modify ticket padding field */
		tik_data->padding = fill;

		/* Calculate hash */
		SHA1((u8 *)tik_data, sizeof(tik), hash);

		/* Found valid hash */
		if (!hash[0])
			return 0;
	}

	return -1;
}

s32 Title_GetTicketViews(u64 tid, tikview **outbuf, u32 *outlen)
{
	tikview *views = NULL;

	u32 nb_views;
	s32 ret;

	/* Get number of ticket views */
	ret = ES_GetNumTicketViews(tid, &nb_views);
	if (ret < 0)
		return ret;

	/* Allocate memory */
	views = (tikview *)memalign(32, sizeof(tikview) * nb_views);
	if (!views)
		return -1;

	/* Get ticket views */
	ret = ES_GetTicketViews(tid, views, nb_views);
	if (ret < 0)
		goto err;

	/* Set values */
	*outbuf = views;
	*outlen = nb_views;

	return 0;

err:
	/* Free memory */
	if (views)
		free(views);

	return ret;
}