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hos: Improve kip patching

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Allows more kip names to be added. To use it on them you will need to dump the kips via the Dump pkg1/2 function and then sha256 to get the hash.
The name must be used as is, otherwise the name compare will fail.

Because of that, also allow unordered parsing and gluing.
This commit is contained in:
CTCaer 2020-04-27 09:38:09 +03:00
parent 62a73ee612
commit 6e538cd291
1 changed files with 94 additions and 61 deletions
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65
bootloader/hos/pkg2.c
View file

@ -640,8 +640,16 @@ static kip1_id_t _kip_ids[] =
{ "FS", "\x81\x7E\xA2\xB0\xB7\x02\xC1\xF3", _fs_patches_1000 }, // FS 10.0.0 exfat
};
static kip1_id_t *_kip_id_sets = _kip_ids;
static u32 _kip_id_sets_cnt = sizeof(_kip_ids) / sizeof(_kip_ids[0]);
static void parse_external_kip_patches()
{
static bool ext_patches_done = false;
if (ext_patches_done)
return;
u32 curr_kip_idx = 0;
char path[64];
strcpy(path, "bootloader/patches.ini");
@ -649,14 +657,43 @@ static void parse_external_kip_patches()
LIST_INIT(ini_kip_sections);
if (ini_patch_parse(&ini_kip_sections, path))
{
// Copy ids into a new patchset.
_kip_id_sets = calloc(sizeof(kip1_id_t), 256); // Max 256 kip ids.
memcpy(_kip_id_sets, _kip_ids, sizeof(_kip_ids));
// Parse patchsets and glue them together.
LIST_FOREACH_ENTRY(ini_kip_sec_t, ini_psec, &ini_kip_sections, link)
{
kip1_id_t* curr_kip = &_kip_ids[curr_kip_idx];
kip1_id_t* curr_kip = NULL;
bool found = false;
for (curr_kip_idx = 0; curr_kip_idx < _kip_id_sets_cnt + 1; curr_kip_idx++)
{
curr_kip = &_kip_id_sets[curr_kip_idx];
if (!curr_kip->name)
break;
if (!strcmp(curr_kip->name, ini_psec->name) && !memcmp(curr_kip->hash, ini_psec->hash, 8))
{
kip1_patchset_t *patchsets = (kip1_patchset_t *)calloc(sizeof(kip1_patchset_t), 8); // Max 8 patchsets per kip.
found = true;
break;
}
}
if (!curr_kip)
continue;
// If not found, create a new empty entry.
if (!found)
{
curr_kip->name = ini_psec->name;
memcpy(curr_kip->hash, ini_psec->hash, 8);
curr_kip->patchset = calloc(sizeof(kip1_patchset_t), 1);
_kip_id_sets_cnt++;
}
kip1_patchset_t *patchsets = (kip1_patchset_t *)calloc(sizeof(kip1_patchset_t), 16); // Max 16 patchsets per kip.
u32 curr_patchset_idx;
for(curr_patchset_idx = 0; curr_kip->patchset[curr_patchset_idx].name != NULL; curr_patchset_idx++)
@ -670,7 +707,7 @@ static void parse_external_kip_patches()
u32 curr_patch_idx = 0;
// Parse patches and glue them together to a patchset.
kip1_patch_t *patches = calloc(sizeof(kip1_patch_t), 16); // Max 16 patches per set.
kip1_patch_t *patches = calloc(sizeof(kip1_patch_t), 32); // Max 32 patches per set.
LIST_FOREACH_ENTRY(ini_patchset_t, pt, &ini_psec->pts, link)
{
if (first_ext_patch)
@ -714,12 +751,9 @@ static void parse_external_kip_patches()
patchsets[curr_patchset_idx].name = NULL;
patchsets[curr_patchset_idx].patches = NULL;
}
}
curr_kip_idx++;
if (!(curr_kip_idx < (sizeof(_kip_ids) / sizeof(_kip_ids[0]))))
break;
}
}
ext_patches_done = true;
}
const pkg2_kernel_id_t *pkg2_identify(u8 *hash)
@ -1041,13 +1075,13 @@ const char* pkg2_patch_kips(link_t *info, char* patchNames)
LIST_FOREACH_ENTRY(pkg2_kip1_info_t, ki, info, link)
{
shaBuf[0] = 0; // sha256 for this kip not yet calculated.
for (u32 currKipIdx = 0; currKipIdx < (sizeof(_kip_ids) / sizeof(_kip_ids[0])); currKipIdx++)
for (u32 currKipIdx = 0; currKipIdx < _kip_id_sets_cnt; currKipIdx++)
{
if (strncmp((const char*)ki->kip1->name, _kip_ids[currKipIdx].name, sizeof(ki->kip1->name)) != 0)
if (strncmp((const char*)ki->kip1->name, _kip_id_sets[currKipIdx].name, sizeof(ki->kip1->name)) != 0)
continue;
u32 bitsAffected = 0;
kip1_patchset_t* currPatchset = _kip_ids[currKipIdx].patchset;
kip1_patchset_t* currPatchset = _kip_id_sets[currKipIdx].patchset;
while (currPatchset != NULL && currPatchset->name != NULL)
{
for (u32 i = 0; i < numPatches; i++)
@ -1071,12 +1105,12 @@ const char* pkg2_patch_kips(link_t *info, char* patchNames)
memset(shaBuf, 0, sizeof(shaBuf));
}
if (memcmp(shaBuf, _kip_ids[currKipIdx].hash, sizeof(_kip_ids[0].hash)) != 0)
if (memcmp(shaBuf, _kip_id_sets[currKipIdx].hash, sizeof(_kip_id_sets[0].hash)) != 0)
continue;
// Find out which sections are affected by the enabled patches, to know which to decompress.
bitsAffected = 0;
currPatchset = _kip_ids[currKipIdx].patchset;
currPatchset = _kip_id_sets[currKipIdx].patchset;
while (currPatchset != NULL && currPatchset->name != NULL)
{
if (currPatchset->patches != NULL)
@ -1111,7 +1145,7 @@ const char* pkg2_patch_kips(link_t *info, char* patchNames)
DPRINTF("%dms %s KIP1 size %d hash %08X\n", (postDecompTime-preDecompTime) / 1000, ki->kip1->name, (int)ki->size, __builtin_bswap32(shaBuf[0]));
#endif
currPatchset = _kip_ids[currKipIdx].patchset;
currPatchset = _kip_id_sets[currKipIdx].patchset;
bool emummc_patch_selected = false;
while (currPatchset != NULL && currPatchset->name != NULL)
{
@ -1180,7 +1214,7 @@ const char* pkg2_patch_kips(link_t *info, char* patchNames)
}
currPatchset++;
}
if (emummc_patch_selected && !strncmp(_kip_ids[currKipIdx].name, "FS", 2))
if (emummc_patch_selected && !strncmp(_kip_id_sets[currKipIdx].name, "FS", 2))
{
emummc_patch_selected = false;
emu_cfg.fs_ver = currKipIdx;
@ -1215,7 +1249,6 @@ static const u8 mkey_keyseed_8xx[][0x10] =
static bool _pkg2_key_unwrap_validate(pkg2_hdr_t *tmp_test, pkg2_hdr_t *hdr, u8 src_slot, u8 *mkey, const u8 *key_seed)
{
// Decrypt older encrypted mkey.
se_aes_crypt_ecb(src_slot, 0, mkey, 0x10, key_seed, 0x10);
// Set and unwrap pkg2 key.