Allow compile as open installer

Author: d0k3

Makefile

@@ -47,6 +47,10 @@ else
 CFLAGS	+=	-DFONT_6X10
 endif
 
+ifeq ($(OPEN),1)
+	CFLAGS += -DOPEN_INSTALLER
+endif
+
 CXXFLAGS	:= $(CFLAGS) -fno-rtti -fno-exceptions
 
 ASFLAGS	:=	-g $(ARCH)

source/common/common.h

@@ -37,22 +37,30 @@
 #define align(v,a) \
     (((v) % (a)) ? ((v) + (a) - ((v) % (a))) : (v))
 
-#define ENTRY_BRAHMA        (1)
-#define ENTRY_GATEWAY       (2)
-
 // SafeB9SInstaller version
-#define VERSION     "0.0.6"
-
-// testfing flags, only useful to devs
-// #define NO_WRITE     // disables all NAND writes, just for testing
-// #define FAIL_TEST    // to test the emergency screen, only works with NO_TRANSFER defined
+#define VERSION     "0.0.7"
 
 // name of the FIRM to install (also name of the input path)
+#ifndef OPEN_INSTALLER
 #define NAME_FIRM   "boot9strap"
+#else
+#define NAME_FIRM   "sighax"
+#endif
 
 // input / output paths
 #define INPUT_PATH  "0:/" NAME_FIRM
 
+// cosmetic stuff (for installer status)
+#ifndef OPEN_INSTALLER
+#define APP_TITLE   "SafeB9SInstaller" " v" VERSION
+#define APP_URL     "https://github.com/d0k3/SafeB9SInstaller"
+#define APP_USAGE   "Usage instructions: https://%s3ds.guide/", IS_DEVKIT ? "dev." : ""
+#else
+#define APP_TITLE   "OpenFirmInstaller" " v" VERSION
+#define APP_URL     "https://github.com/d0k3/SafeB9SInstaller"
+#define APP_USAGE   "Based on SafeB9SInstaller by d0k3"
+#endif
+
 // buffer area defines (big buffer for firm)
 #define WORK_BUFFER         ((u8*) 0x21000000)
 #define WORK_BUFFER_SIZE    (0x400000)
@@ -61,6 +69,10 @@
 #define NAND_BUFFER         ((u8*) 0x21800000)
 #define NAND_BUFFER_SIZE    (0x100000)
 
+// testfing flags, only useful to devs
+// #define NO_WRITE     // disables all NAND writes, just for testing
+// #define FAIL_TEST    // to test the emergency screen, only works with NO_TRANSFER defined
+
 inline u32 strchrcount(const char* str, char symbol) {
     u32 count = 0;
     for (u32 i = 0; str[i] != '\0'; i++) {

source/installer.c

@@ -46,7 +46,9 @@ u32 ShowInstallerStatus(void) {
     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, "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   -");
@@ -64,7 +66,7 @@ u32 ShowInstallerStatus(void) {
     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, "Usage instructions: https://%s3ds.guide/", IS_DEVKIT ? "dev." : "");
+    DrawStringF(BOT_SCREEN, pos_xb, pos_yu - 10, COLOR_STD_FONT, COLOR_STD_BG, APP_USAGE);
     return 0;
 }
 
@@ -129,12 +131,11 @@ u32 SafeB9SInstaller(void) {
         statusFirm = STATUS_RED;
         return 1;
     }
-    if (CheckBoot9Strap(FIRM_BUFFER) != 0) {
-        snprintf(msgFirm, 64, "not boot9strap");
+    if (CheckFirmPayload(FIRM_BUFFER, msgFirm) != 0) {
         statusFirm = STATUS_RED;
         return 1;
     }
-    snprintf(msgFirm, 64, "loaded & verified");
+    // snprintf(msgFirm, 64, "loaded & verified");
     statusFirm = STATUS_GREEN;
     ShowInstallerStatus();
     // provided FIRM is okay!

source/safety/validator.c

@@ -8,6 +8,9 @@
 #define B9S_MAGIC   "B9S"
 #define B9S_OFFSET  (0x40 - strnlen(B9S_MAGIC, 0x10))
 
+#define FB3_MAGIC   "FASTBOOT 3DS   "
+#define FB3_OFFSET  0x200 // this is not actually used
+
 // see: https://www.3dbrew.org/wiki/FIRM#Firmware_Section_Headers
 typedef struct {
     u32 offset;
@@ -130,3 +133,28 @@ u32 CheckFirmSigHax(void* firm) {
 u32 CheckBoot9Strap(void* firm) {
     return (memcmp(((u8*) firm) + B9S_OFFSET, B9S_MAGIC, strnlen(B9S_MAGIC, 0x10)) == 0) ? 0 : 1;
 }
+
+u32 CheckFastBoot3DS(void* firm) {
+    FirmHeader* header = (FirmHeader*) firm;
+    u32 offset = 0;
+    for (u32 i = 0; (i < 4) && !offset; i++) { // find ARM9 section
+        FirmSectionHeader* section = header->sections + i;
+        if (section->size && (section->type == 0))
+            offset = section->offset;
+    }
+    return (offset && (memcmp(((u8*) firm) + offset, FB3_MAGIC, strnlen(FB3_MAGIC, 0x10)) == 0)) ? 0 : 1;
+}
+
+u32 CheckFirmPayload(void* firm, char* result) {
+    if (CheckBoot9Strap(firm) == 0) {
+        if (result) snprintf(result, 32, "boot9strap firm");
+        return 0;
+    #ifdef OPEN_INSTALLER 
+    } else if (CheckFastBoot3DS(firm) == 0) {
+        if (result) snprintf(result, 32, "fastboot3ds firm");
+        return 0;
+    #endif
+    }
+    if (result) snprintf(result, 32, "unknown firm");
+    return 1;
+}

source/safety/validator.h

@@ -5,4 +5,4 @@
 u32 ValidateFirm(void* firm, u8* firm_sha, u32 firm_size, char* output);
 u32 ValidateSector(void* sector);
 u32 CheckFirmSigHax(void* firm);
-u32 CheckBoot9Strap(void* firm);
+u32 CheckFirmPayload(void* firm, char* result);