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SafeB9SInstaller/source/installer.c
MechanicalDragon 07207a2fb6
Clear a9lh stage2 section & fix compile (#39) 
Fixes #40 and #41
2020-05-06 17:52:23 +02:00

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C
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#include "installer.h"
#include "safewrite.h"
#include "validator.h"
#include "unittype.h"
#include "nand.h"
#include "sdmmc.h"
#include "ui.h"
#include "qff.h"
#include "hid.h"
#define COLOR_STATUS(s) ((s == STATUS_GREEN) ? COLOR_BRIGHTGREEN : (s == STATUS_YELLOW) ? COLOR_BRIGHTYELLOW : (s == STATUS_RED) ? COLOR_RED : COLOR_DARKGREY)
#define MIN_SD_FREE (16 * 1024 * 1024) // 16MB
#define NAME_SIGHAXFIRM (IS_DEVKIT ? INPUT_PATH "/" NAME_FIRM "_dev.firm" : INPUT_PATH "/" NAME_FIRM ".firm")
#define NAME_SIGHAXFIRMSHA (IS_DEVKIT ? INPUT_PATH "/" NAME_FIRM "_dev.firm.sha" : INPUT_PATH "/" NAME_FIRM ".firm.sha")
#define NAME_SECTOR0x96 (IS_DEVKIT ? INPUT_PATH "/secret_sector_dev.bin" : INPUT_PATH "/secret_sector.bin")
#define NAME_FIRMBACKUP INPUT_PATH "/firm%lu_enc.bak"
#define NAME_SECTORBACKUP INPUT_PATH "/sector0x96_enc.bak"
#define MAX_STAGE2_SIZE 0x89A00
#define STATUS_GREY -1
#define STATUS_GREEN 0
#define STATUS_YELLOW 1
#define STATUS_RED 2
static int statusA9lh = STATUS_GREY;
static int statusSdCard = STATUS_GREY;
static int statusFirm = STATUS_GREY;
static int statusSector = STATUS_GREY;
static int statusCrypto = STATUS_GREY;
static int statusBackup = STATUS_GREY;
static int statusInstall = STATUS_GREY;
static char msgA9lh[64] = "not started";
static char msgSdCard[64] = "not started";
static char msgFirm[64] = "not started";
static char msgSector[64] = "not started";
static char msgCrypto[64] = "not started";
static char msgBackup[64] = "not started";
static char msgInstall[64] = "not started";
u32 ShowInstallerStatus(void) {
const u32 pos_xb = 10;
const u32 pos_x0 = pos_xb + 4;
const u32 pos_x1 = pos_x0 + (17*FONT_WIDTH_EXT);
const u32 pos_yb = 10;
const u32 pos_yu = 230;
const u32 pos_y0 = pos_yb + 50;
const u32 stp = 14;
// DrawStringF(BOT_SCREEN, pos_xb, pos_yb, COLOR_STD_FONT, COLOR_STD_BG, "SafeB9SInstaller v" VERSION "\n" "-----------------------" "\n" "https://github.com/d0k3/SafeB9SInstaller");
DrawStringF(BOT_SCREEN, pos_xb, pos_yb, COLOR_STD_FONT, COLOR_STD_BG, APP_TITLE "\n" "%.*s" "\n" APP_URL,
strnlen(APP_TITLE, 32), "--------------------------------");
DrawStringF(BOT_SCREEN, pos_x0, pos_y0 + (0*stp), COLOR_STD_FONT, COLOR_STD_BG, "ARM9LoaderHax -");
DrawStringF(BOT_SCREEN, pos_x0, pos_y0 + (1*stp), COLOR_STD_FONT, COLOR_STD_BG, "MicroSD Card -");
DrawStringF(BOT_SCREEN, pos_x0, pos_y0 + (2*stp), COLOR_STD_FONT, COLOR_STD_BG, "Sighaxed FIRM -");
DrawStringF(BOT_SCREEN, pos_x0, pos_y0 + (3*stp), COLOR_STD_FONT, COLOR_STD_BG, "Secret Sector -");
DrawStringF(BOT_SCREEN, pos_x0, pos_y0 + (4*stp), COLOR_STD_FONT, COLOR_STD_BG, "Crypto Status -");
DrawStringF(BOT_SCREEN, pos_x0, pos_y0 + (5*stp), COLOR_STD_FONT, COLOR_STD_BG, "Backup Status -");
DrawStringF(BOT_SCREEN, pos_x0, pos_y0 + (6*stp), COLOR_STD_FONT, COLOR_STD_BG, "Install Status -");
DrawStringF(BOT_SCREEN, pos_x1, pos_y0 + (0*stp), COLOR_STATUS(statusA9lh) , COLOR_STD_BG, "%-21.21s", msgA9lh );
DrawStringF(BOT_SCREEN, pos_x1, pos_y0 + (1*stp), COLOR_STATUS(statusSdCard) , COLOR_STD_BG, "%-21.21s", msgSdCard );
DrawStringF(BOT_SCREEN, pos_x1, pos_y0 + (2*stp), COLOR_STATUS(statusFirm) , COLOR_STD_BG, "%-21.21s", msgFirm );
DrawStringF(BOT_SCREEN, pos_x1, pos_y0 + (3*stp), COLOR_STATUS(statusSector) , COLOR_STD_BG, "%-21.21s", msgSector );
DrawStringF(BOT_SCREEN, pos_x1, pos_y0 + (4*stp), COLOR_STATUS(statusCrypto) , COLOR_STD_BG, "%-21.21s", msgCrypto );
DrawStringF(BOT_SCREEN, pos_x1, pos_y0 + (5*stp), COLOR_STATUS(statusBackup) , COLOR_STD_BG, "%-21.21s", msgBackup );
DrawStringF(BOT_SCREEN, pos_x1, pos_y0 + (6*stp), COLOR_STATUS(statusInstall), COLOR_STD_BG, "%-21.21s", msgInstall);
DrawStringF(BOT_SCREEN, pos_xb, pos_yu - 10, COLOR_STD_FONT, COLOR_STD_BG, APP_USAGE);
return 0;
}
u32 SafeB9SInstaller(void) {
UINT bt;
u32 ret = 0;
// initialization
ShowString("Initializing, please wait...");
// step #0 - a9lh check
snprintf(msgA9lh, 64, (IS_A9LH && !IS_SIGHAX) ? "installed" : "not installed");
statusA9lh = STATUS_GREEN;
ShowInstallerStatus();
// step #1 - init/check SD card
snprintf(msgSdCard, 64, "checking...");
statusSdCard = STATUS_YELLOW;
ShowInstallerStatus();
u64 sdFree = 0;
u64 sdTotal = 0;
if ((fs_init() != FR_OK) ||
(f_getfreebyte("0:", &sdFree) != FR_OK) ||
(f_gettotalbyte("0:", &sdTotal) != FR_OK)) {
snprintf(msgSdCard, 64, "init failed");
statusSdCard = STATUS_RED;
return 1;
}
InitNandCrypto(); // for sector0x96 crypto and NAND drives
snprintf(msgSdCard, 64, "%lluMB/%lluMB free", sdFree / (1024 * 1024), sdTotal / (1024 * 1024));
statusSdCard = (sdFree < MIN_SD_FREE) ? STATUS_RED : STATUS_GREEN;
ShowInstallerStatus();
if (sdFree < MIN_SD_FREE) return 1;
// SD card okay!
// step #2 - check sighaxed firm
snprintf(msgFirm, 64, "checking...");
statusFirm = STATUS_YELLOW;
ShowInstallerStatus();
u8 firm_sha[0x20];
UINT firm_size;
bool unknown_payload = false;
if ((f_qread(NAME_SIGHAXFIRM, FIRM_BUFFER, 0, FIRM_BUFFER_SIZE, &firm_size) != FR_OK) ||
(firm_size < 0x200)) {
snprintf(msgFirm, 64, "file not found");
statusFirm = STATUS_RED;
return 1;
}
if ((f_qread(NAME_SIGHAXFIRMSHA, firm_sha, 0, 0x20, &bt) != FR_OK) || (bt != 0x20)) {
snprintf(msgFirm, 64, ".sha file not found");
statusFirm = STATUS_RED;
return 1;
}
if (ValidateFirm(FIRM_BUFFER, firm_sha, firm_size, NULL) != 0) {
snprintf(msgFirm, 64, "invalid FIRM");
statusFirm = STATUS_RED;
return 1;
}
if (CheckFirmSigHax(FIRM_BUFFER) != 0) {
snprintf(msgFirm, 64, "not sighaxed");
statusFirm = STATUS_RED;
return 1;
}
if (CheckFirmPayload(FIRM_BUFFER, msgFirm) != 0) {
#ifndef OPEN_INSTALLER
statusFirm = STATUS_RED;
return 1;
#else
unknown_payload = true;
#endif
}
statusFirm = unknown_payload ? STATUS_YELLOW : STATUS_GREEN;
ShowInstallerStatus();
// provided FIRM is okay!
// step #3 - check secret_sector.bin file
u8 secret_sector[0x200] = { 0 };
if (IS_A9LH && !IS_SIGHAX && !IS_O3DS) {
snprintf(msgSector, 64, "checking...");
statusSector = STATUS_YELLOW;
ShowInstallerStatus();
if ((f_qread(NAME_SECTOR0x96, secret_sector, 0, 0x200, &bt) != FR_OK) || (bt != 0x200)) {
snprintf(msgSector, 64, "file not found");
statusSector = STATUS_RED;
return 1;
}
if (ValidateSector(secret_sector) != 0) {
snprintf(msgSector, 64, "invalid file");
statusSector = STATUS_RED;
return 1;
}
snprintf(msgSector, 64, "loaded & verified");
} else snprintf(msgSector, 64, "not required");
statusSector = STATUS_GREEN;
ShowInstallerStatus();
// secret_sector.bin okay or not required!
// step #4 - check NAND crypto
snprintf(msgCrypto, 64, "checking...");
statusCrypto = STATUS_YELLOW;
ShowInstallerStatus();
u32 n_firms = 0;
for (; n_firms < 8; n_firms++) {
NandPartitionInfo np_info;
if (GetNandPartitionInfo(&np_info, NP_TYPE_FIRM, NP_SUBTYPE_CTR, n_firms) != 0) break;
if ((firm_size > np_info.count * 0x200) || (np_info.count * 0x200 > WORK_BUFFER_SIZE)) {
n_firms = 0;
break;
}
}
if (!n_firms) {
snprintf(msgCrypto, 64, "FIRM partition fail");
statusCrypto = STATUS_RED;
return 1;
}
if (!CheckFirmCrypto()) {
snprintf(msgCrypto, 64, "FIRM crypto fail");
statusCrypto = STATUS_RED;
return 1;
}
if ((IS_A9LH && !IS_SIGHAX && !IS_O3DS) && !CheckSector0x96Crypto()) {
snprintf(msgCrypto, 64, "OTP crypto fail");
statusCrypto = STATUS_RED;
return 1;
}
snprintf(msgCrypto, 64, "all checks passed");
statusCrypto = STATUS_GREEN;
ShowInstallerStatus();
// step #X - point of no return
if (!ShowUnlockSequence(unknown_payload ? 6 : 1, unknown_payload ?
"!!! FIRM NOT RECOGNIZED !!!\nProceeding may lead to a BRICK!\n \nTo proceed, enter the sequence\nbelow or press B to cancel." :
"All input files verified.\n \nTo install FIRM, enter the sequence\nbelow or press B to cancel.")) {
snprintf(msgBackup, 64, "cancelled by user");
snprintf(msgInstall, 64, "cancelled by user");
statusBackup = STATUS_YELLOW;
statusInstall = STATUS_YELLOW;
return 1;
}
// step #5 - backup of current FIRMs and sector 0x96
snprintf(msgBackup, 64, "FIRM backup...");
statusBackup = STATUS_YELLOW;
ShowInstallerStatus();
ShowProgress(0, 0, "FIRM backup");
for (u32 i = 0; i < n_firms; i++) {
NandPartitionInfo np_info;
ret = GetNandPartitionInfo(&np_info, NP_TYPE_FIRM, NP_SUBTYPE_CTR, i);
if (ret != 0) break;
u32 fsize = np_info.count * 0x200;
u32 foffset = np_info.sector * 0x200;
char bakname[64];
snprintf(bakname, 64, NAME_FIRMBACKUP, i);
snprintf(msgBackup, 64, "FIRM backup (%lu/%lu)", i, n_firms);
ShowInstallerStatus();
if ((ReadNandBytes(WORK_BUFFER, foffset, fsize, 0xFF) != 0) ||
(SafeQWriteFile(bakname, WORK_BUFFER, fsize) != 0)) {
ret = 1;
break;
}
ShowProgress(i + 1, n_firms, "FIRM backup");
}
if (ret != 0) {
snprintf(msgBackup, 64, "FIRM backup fail");
statusBackup = STATUS_RED;
return 1;
}
if ((IS_A9LH && !IS_SIGHAX)) {
snprintf(msgBackup, 64, "0x96 backup...");
ShowInstallerStatus();
u8 sector_backup0[0x200];
u8 sector_backup1[0x200];
f_unlink(NAME_SECTORBACKUP);
if ((ReadNandSectors(sector_backup0, 0x96, 1, 0xFF) != 0) ||
(f_qwrite(NAME_SECTORBACKUP, sector_backup0, 0, 0x200, &bt) != FR_OK) || (bt != 0x200) ||
(f_qread(NAME_SECTORBACKUP, sector_backup1, 0, 0x200, &bt) != FR_OK) || (bt != 0x200) ||
(memcmp(sector_backup0, sector_backup1, 0x200) != 0)) {
snprintf(msgBackup, 64, "0x96 backup fail");
statusBackup = STATUS_RED;
return 1;
}
}
snprintf(msgBackup, 64, "backed up & verified");
statusBackup = STATUS_GREEN;
ShowInstallerStatus();
// backups done
// step #6 - install sighaxed FIRM
snprintf(msgInstall, 64, "FIRM install...");
statusInstall = STATUS_YELLOW;
ShowInstallerStatus();
#ifndef NO_WRITE
ShowProgress(0, 0, "FIRM install");
do {
for (u32 i = 0; i < n_firms; i++) {
NandPartitionInfo np_info;
ret = GetNandPartitionInfo(&np_info, NP_TYPE_FIRM, NP_SUBTYPE_CTR, i);
if (ret != 0) break;
ret = SafeWriteNand(FIRM_BUFFER, np_info.sector * 0x200, firm_size, np_info.keyslot);
if (ret != 0) break;
ShowProgress(i+1, n_firms, "FIRM install");
snprintf(msgInstall, 64, "FIRM install (%li/8)", i+1);
ShowInstallerStatus();
}
if (ret != 0) break;
uint8_t emptyStage2[MAX_STAGE2_SIZE]={0};
// Uninstall a9lh stage 2 always if firm flashed ok
// This prevents false positives in the event of cfw uninstall
ret = sdmmc_nand_writesectors(0x5C000, MAX_STAGE2_SIZE / 0x200, emptyStage2);
if (ret != 0) break;
if ((IS_A9LH && !IS_SIGHAX)) {
snprintf(msgInstall, 64, "0x96 revert...");
ShowInstallerStatus();
ret = SafeWriteNand(secret_sector, SECTOR_SECRET * 0x200, 0x200, IS_O3DS ? 0xFF : 0x11);
if (ret == 0) snprintf(msgA9lh, 64, "uninstalled");
}
} while (false);
if (ret == 0) {
snprintf(msgInstall, 64, "install success!");
statusInstall = STATUS_GREEN;
return 0;
} else {
snprintf(msgInstall, 64, "install failed");
statusInstall = STATUS_RED;
if ((IS_A9LH && !IS_SIGHAX)) {
snprintf(msgA9lh, 64, "fucked up");
statusA9lh = STATUS_RED;
}
ShowInstallerStatus();
}
#elif !defined FAIL_TEST
snprintf(msgInstall, 64, "no write mode");
statusInstall = STATUS_YELLOW;
return 0;
#else
snprintf(msgInstall, 64, "emergency mode");
statusInstall = STATUS_YELLOW;
ShowInstallerStatus();
#endif
// if we end up here: uhoh
ShowPrompt(false, APP_TITLE " failed!\nThis really should not have happened :/.");
ShowPrompt(false, "Your system is now reverted to\nit's earlier state.\n \nDO NOT TURN OFF YOUR 3DS NOW!");
// try to revert to the earlier state
snprintf(msgBackup, 64, "FIRM restore...");
statusBackup = STATUS_YELLOW;
ShowInstallerStatus();
ShowProgress(0, 0, "FIRM restore");
for (u32 i = 0; i < n_firms; i++) {
NandPartitionInfo np_info;
ret = GetNandPartitionInfo(&np_info, NP_TYPE_FIRM, NP_SUBTYPE_CTR, i);
if (ret != 0) break;
u32 fsize = np_info.count * 0x200;
u32 foffset = np_info.sector * 0x200;
char bakname[64];
snprintf(bakname, 64, NAME_FIRMBACKUP, i);
snprintf(msgBackup, 64, "FIRM restore (%lu/%lu)", i, n_firms);
ShowInstallerStatus();
if ((f_qread(bakname, WORK_BUFFER, 0, fsize, &bt) != FR_OK) || (bt != fsize) ||
(WriteNandBytes(WORK_BUFFER, foffset, fsize, 0xFF) != 0)) {
ret = 1;
break;
}
ShowProgress(i + 1, n_firms, "FIRM restore");
}
if (ret != 0) {
snprintf(msgBackup, 64, "FIRM restore fail");
statusBackup = STATUS_RED;
return 1;
}
if ((IS_A9LH && !IS_SIGHAX)) {
snprintf(msgBackup, 64, "0x96 restore...");
ShowInstallerStatus();
u8 sector_backup[0x200];
if ((f_qread(NAME_SECTORBACKUP, sector_backup, 0, 0x200, &bt) != FR_OK) || (bt != 0x200) ||
(WriteNandSectors(sector_backup, SECTOR_SECRET, 1, 0xFF) != 0)) {
snprintf(msgBackup, 64, "0x96 restore fail");
statusBackup = STATUS_RED;
return 1;
}
snprintf(msgA9lh, 64, "restored a9lh");
statusA9lh = STATUS_YELLOW;
}
snprintf(msgBackup, 64, "backup restored");
statusBackup = STATUS_YELLOW;
snprintf(msgInstall, 64, "reverted system");
statusInstall = STATUS_YELLOW;
return 1;
}
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