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Show nagscreen if no embedded backup is found.

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This commit is contained in:
d0k3 2017-06-23 17:28:09 +02:00
parent f129100f88
commit 9589731fa6
4 changed files with 37 additions and 5 deletions
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2
source/filesys/vff.c
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@ -81,11 +81,13 @@ FRESULT fvx_stat (const TCHAR* path, FILINFO* fno) {
if (GetVirtualSource(path)) {
VirtualFile vfile;
if (!GetVirtualFile(&vfile, path)) return FR_NO_PATH;
if (fno) {
fno->fsize = vfile.size;
fno->fdate = fno->ftime = 0;
fno->fattrib = (vfile.flags & VFLAG_DIR) ? (AM_DIR|AM_VRT) : AM_VRT;
// could be better...
if (_USE_LFN != 0) GetVirtualFilename(fno->fname, &vfile, _MAX_LFN + 1);
}
return FR_OK;
} else return fa_stat( path, fno );
}

10
source/godmode.c
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@ -1382,6 +1382,16 @@ u32 GodMode() {
clipboard->n_entries = 0;
memset(panedata, 0x00, 0x10000);
// check for embedded essential backup
if (IS_SIGHAX && !PathExist("S:/essential.exefs") && CheckGenuineNandNcsd() &&
ShowPrompt(true, "Essential files backup not found.\nCreate one now?")) {
if (EmbedEssentialBackup("S:/nand.bin") == 0) {
u32 flags = BUILD_PATH | SKIP_ALL;
PathCopy(OUTPUT_PATH, "S:/essential.exefs", &flags);
ShowPrompt(false, "Backup embedded in SysNAND\nand written to " OUTPUT_PATH ".");
}
}
while(timer_sec( timer ) < 1); // show splash for at least 1 sec
ClearScreenF(true, true, COLOR_STD_BG); // clear splash

19
source/nand/nand.c
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@ -214,6 +214,25 @@ bool CheckSector0x96Crypto(void)
return (sha_cmp(KEY95_SHA256, buffer, 16, SHA256_MODE) == 0);
}
bool CheckGenuineNandNcsd(void)
{
u8 gen_o3ds_hash[0x20] = {
0xCD, 0xB8, 0x2B, 0xF3, 0xE0, 0xC7, 0xA3, 0xC7, 0x58, 0xDF, 0xDC, 0x4E, 0x27, 0x63, 0xBE, 0xE8,
0xBE, 0x2B, 0x1D, 0xF4, 0xBA, 0x97, 0xAF, 0x7F, 0x19, 0x70, 0x99, 0xDB, 0x66, 0xF7, 0x2F, 0xD7
};
u8 gen_n3ds_hash[0x20] = {
0x49, 0xB7, 0x4A, 0xF1, 0xFD, 0xB7, 0xCF, 0x5B, 0x76, 0x8F, 0xA2, 0x94, 0x0D, 0xB2, 0xB3, 0xE2,
0xA4, 0xBD, 0x25, 0x03, 0x06, 0x03, 0x47, 0x0B, 0x24, 0x5A, 0x86, 0x6A, 0x43, 0x60, 0xBC, 0x84,
};
u8 gen_hdr[0x100];
if ((ReadNandBytes(gen_hdr, 0x100, 0x100, 0xFF, NAND_SYSNAND) != 0) ||
(ReadNandBytes(gen_hdr + 0xBE, 0x1BE, 0x42, 0x03, NAND_SYSNAND) != 0))
return false;
return (sha_cmp((IS_O3DS) ? gen_o3ds_hash : gen_n3ds_hash, gen_hdr, 0x100, SHA256_MODE) == 0);
}
void CryptNand(void* buffer, u32 sector, u32 count, u32 keyslot)
{
u32 mode = (keyslot != 0x03) ? AES_CNT_CTRNAND_MODE : AES_CNT_TWLNAND_MODE; // somewhat hacky

1
source/nand/nand.h
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@ -59,6 +59,7 @@ typedef struct {
bool InitNandCrypto(void);
bool CheckSlot0x05Crypto(void);
bool CheckSector0x96Crypto(void);
bool CheckGenuineNandNcsd(void);
void CryptNand(void* buffer, u32 sector, u32 count, u32 keyslot);
void CryptSector0x96(void* buffer, bool encrypt);