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hekate/ipl/pkg2.c
2018-05-01 17:22:03 +12:00

174 lines
4.7 KiB
C
Executable file

/*
* Copyright (c) 2018 naehrwert
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <string.h>
#include "pkg2.h"
#include "heap.h"
#include "se.h"
/*#include "gfx.h"
extern gfx_ctxt_t gfx_ctxt;
extern gfx_con_t gfx_con;
#define DPRINTF(...) gfx_printf(&gfx_con, __VA_ARGS__)*/
#define DPRINTF(...)
static u32 _pkg2_calc_kip1_size(pkg2_kip1_t *kip1)
{
u32 size = sizeof(pkg2_kip1_t);
for (u32 j = 0; j < KIP1_NUM_SECTIONS; j++)
size += kip1->sections[j].size_comp;
return size;
}
void pkg2_parse_kips(link_t *info, pkg2_hdr_t *pkg2)
{
u8 *ptr = pkg2->data + pkg2->sec_size[PKG2_SEC_KERNEL];
pkg2_ini1_t *ini1 = (pkg2_ini1_t *)ptr;
ptr += sizeof(pkg2_ini1_t);
for (u32 i = 0; i < ini1->num_procs; i++)
{
pkg2_kip1_t *kip1 = (pkg2_kip1_t *)ptr;
pkg2_kip1_info_t *ki = (pkg2_kip1_info_t *)malloc(sizeof(pkg2_kip1_info_t));
ki->kip1 = kip1;
ki->size = _pkg2_calc_kip1_size(kip1);
list_append(info, &ki->link);
ptr += ki->size;
DPRINTF(" kip1 %d:%s @ %08X (%08X)\n", i, kip1->name, (u32)kip1, ki->size);
}
}
int pkg2_has_kip(link_t *info, u64 tid)
{
LIST_FOREACH_ENTRY(pkg2_kip1_info_t, ki, info, link)
if(ki->kip1->tid == tid)
return 1;
return 0;
}
void pkg2_replace_kip(link_t *info, u64 tid, pkg2_kip1_t *kip1)
{
LIST_FOREACH_ENTRY(pkg2_kip1_info_t, ki, info, link)
if (ki->kip1->tid == tid)
{
ki->kip1 = kip1;
ki->size = _pkg2_calc_kip1_size(kip1);
DPRINTF("replaced kip (new size %08X)\n", ki->size);
return;
}
}
void pkg2_add_kip(link_t *info, pkg2_kip1_t *kip1)
{
pkg2_kip1_info_t *ki = (pkg2_kip1_info_t *)malloc(sizeof(pkg2_kip1_info_t));
ki->kip1 = kip1;
ki->size = _pkg2_calc_kip1_size(kip1);
DPRINTF("added kip (size %08X)\n", ki->size);
list_append(info, &ki->link);
}
void pkg2_merge_kip(link_t *info, pkg2_kip1_t *kip1)
{
if (pkg2_has_kip(info, kip1->tid))
pkg2_replace_kip(info, kip1->tid, kip1);
else
pkg2_add_kip(info, kip1);
}
pkg2_hdr_t *pkg2_decrypt(void *data)
{
u8 *pdata = (u8 *)data;
//Skip signature.
pdata += 0x100;
pkg2_hdr_t *hdr = (pkg2_hdr_t *)pdata;
//Skip header.
pdata += sizeof(pkg2_hdr_t);
//Decrypt header.
se_aes_crypt_ctr(8, hdr, sizeof(pkg2_hdr_t), hdr, sizeof(pkg2_hdr_t), hdr);
//gfx_hexdump(&gfx_con, (u32)hdr, hdr, 0x100);
if (hdr->magic != PKG2_MAGIC)
return NULL;
for (u32 i = 0; i < 4; i++)
{
DPRINTF("sec %d has size %08X\n", i, hdr->sec_size[i]);
if (!hdr->sec_size[i])
continue;
se_aes_crypt_ctr(8, pdata, hdr->sec_size[i], pdata, hdr->sec_size[i], &hdr->sec_ctr[i * 0x10]);
//gfx_hexdump(&gfx_con, (u32)pdata, pdata, 0x100);
pdata += hdr->sec_size[i];
}
return hdr;
}
void pkg2_build_encrypt(void *dst, void *kernel, u32 kernel_size, link_t *kips_info)
{
u8 *pdst = (u8 *)dst;
//Signature.
memset(pdst, 0, 0x100);
pdst += 0x100;
//Header.
pkg2_hdr_t *hdr = (pkg2_hdr_t *)pdst;
memset(hdr, 0, sizeof(pkg2_hdr_t));
pdst += sizeof(pkg2_hdr_t);
hdr->magic = PKG2_MAGIC;
hdr->base = 0x10000000;
DPRINTF("kernel @ %08X (%08X)\n", (u32)kernel, kernel_size);
//Kernel.
memcpy(pdst, kernel, kernel_size);
hdr->sec_size[PKG2_SEC_KERNEL] = kernel_size;
hdr->sec_off[PKG2_SEC_KERNEL] = 0x10000000;
se_aes_crypt_ctr(8, pdst, kernel_size, pdst, kernel_size, &hdr->sec_ctr[PKG2_SEC_KERNEL * 0x10]);
pdst += kernel_size;
DPRINTF("kernel encrypted\n");
//INI1.
u32 ini1_size = sizeof(pkg2_ini1_t);
pkg2_ini1_t *ini1 = (pkg2_ini1_t *)pdst;
memset(ini1, 0, sizeof(pkg2_ini1_t));
ini1->magic = INI1_MAGIC;
pdst += sizeof(pkg2_ini1_t);
LIST_FOREACH_ENTRY(pkg2_kip1_info_t, ki, kips_info, link)
{
DPRINTF("adding kip1 '%s' @ %08X (%08X)\n", ki->kip1->name, (u32)ki->kip1, ki->size);
memcpy(pdst, ki->kip1, ki->size);
pdst += ki->size;
ini1_size += ki->size;
ini1->num_procs++;
}
ini1->size = ini1_size;
hdr->sec_size[PKG2_SEC_INI1] = ini1_size;
hdr->sec_off[PKG2_SEC_INI1] = 0x14080000;
se_aes_crypt_ctr(8, ini1, ini1_size, ini1, ini1_size, &hdr->sec_ctr[PKG2_SEC_INI1 * 0x10]);
DPRINTF("INI1 encrypted\n");
//Encrypt header.
*(u32 *)hdr->ctr = 0x100 + sizeof(pkg2_hdr_t) + kernel_size + ini1_size;
se_aes_crypt_ctr(8, hdr, sizeof(pkg2_hdr_t), hdr, sizeof(pkg2_hdr_t), hdr);
memset(hdr->ctr, 0 , 0x10);
*(u32 *)hdr->ctr = 0x100 + sizeof(pkg2_hdr_t) + kernel_size + ini1_size;
}