Added method for dumping SaveDataCheck binaries

Makefile

@@ -19,7 +19,7 @@ include $(DEVKITARM)/3ds_rules
 #---------------------------------------------------------------------------------
 export TARGET		:=	$(shell basename $(CURDIR))
 BUILD		:=	build
-SOURCES		:=	source source/utils source/utils/shared_font
+SOURCES		:=	source source/utils source/utils/shared_font source/utils/savedatacheck
 DATA		:=	data
 INCLUDES	:=	source #include
 

source/main.cpp

@@ -8,10 +8,12 @@
 
 #include "output.h"
 #include "utils/shared_font/shared_font.h"
+#include "utils/savedatacheck/savedatacheck.h"
 
 static unsigned int util_counter = 0;
 static void (*utils[]) (void) = {
     SharedFont::Dump,
+    SaveDataCheck::Dump,
 };
 
 int main()

source/utils/savedatacheck/savedatacheck.cpp

@@ -0,0 +1,88 @@
+// Copyright 2014 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include <memory>
+#include <cstdlib>
+#include <cstdio>
+
+#include <3ds.h>
+
+#include "output.h"
+#include "utils/shared_font/shared_font.h"
+
+namespace SaveDataCheck {
+    
+std::string BuildSharedRomFSFilename(u8* lowpath) {
+    const u32* split_lowpath = reinterpret_cast<u32*>(lowpath);
+    char* filename_buffer;
+    asprintf(&filename_buffer, "/%08x%08x.bin", split_lowpath[1], split_lowpath[0]);
+    std::string filename(filename_buffer);
+    free(filename_buffer);
+    return filename;
+}
+    
+void DumpSharedRomFS(u8* archive_binary_lowpath) {    
+    std::string output_file = BuildSharedRomFSFilename(archive_binary_lowpath);
+    
+    // Read RomFS bin from SaveDataCheck...
+    
+    Handle romfs_handle;
+    u64    romfs_size        = 0;
+    u32    romfs_bytes_read  = 0;
+    
+    FS_archive savedatacheck_archive    = { 0x2345678a, { PATH_BINARY, 16, archive_binary_lowpath } };
+    u8         file_binary_lowpath[20]  = {};
+    FS_path    romfs_path               = { PATH_BINARY, 20, file_binary_lowpath };
+    
+    print(GFX_TOP, "Dumping SaveDataCheck RomFS (%s)... ", output_file.c_str());
+
+    FSUSER_OpenFileDirectly(NULL, &romfs_handle, savedatacheck_archive, romfs_path, FS_OPEN_READ, FS_ATTRIBUTE_NONE);
+    FSFILE_GetSize(romfs_handle, &romfs_size);
+    
+    std::unique_ptr<u8> romfs_data_buffer(new u8[romfs_size]);
+    FSFILE_Read(romfs_handle, &romfs_bytes_read, 0, romfs_data_buffer.get(), romfs_size);
+    FSFILE_Close(romfs_handle);
+    
+    // Dump RomFS bin to SDMC...
+    
+    Handle     file_handle;
+    u32        bytes_written = 0;
+    FS_path    fs_path       = FS_makePath(PATH_CHAR, output_file.c_str());
+    FS_archive sdmc_archive  = (FS_archive) { 0x00000009, { PATH_EMPTY, 1, (u8*) "" } };
+    
+    FSUSER_OpenArchive(NULL, &sdmc_archive);
+    FSUSER_OpenFile(NULL, &file_handle, sdmc_archive, fs_path, FS_OPEN_CREATE | FS_OPEN_WRITE, FS_ATTRIBUTE_NONE);
+    Result res = FSFILE_Write(file_handle, &bytes_written, 0x0, romfs_data_buffer.get(), romfs_size, FS_WRITE_FLUSH);
+    FSFILE_Close(file_handle);
+    FSUSER_CloseArchive(NULL, &sdmc_archive);
+    
+    // Check result...
+    
+    if (res == 0 && bytes_written == romfs_size)
+        print(GFX_TOP, "Done!\n");
+    else
+        print(GFX_TOP, "Failed!\n");
+}
+
+void Dump() {
+    // savedatacheck/000400db00010302.bin
+    u8 binary_lowpath_000400db00010302[] = { 
+        0x02, 0x03, 0x01, 0x00, 0xdb, 0x00, 0x04, 0x00, 0x00, 0xff, 0xff, 0xff, 0x01, 0x00, 0x00, 0x00
+    };
+    DumpSharedRomFS(binary_lowpath_000400db00010302);
+    
+    // savedatacheck/0004009b00010202.bin
+    u8 binary_lowpath_0004009b00010202[] = { 
+        0x02, 0x02, 0x01, 0x00, 0x9b, 0x00, 0x04, 0x00, 0x00, 0xff, 0xff, 0xff, 0x02, 0x00, 0x00, 0x00
+    };
+    DumpSharedRomFS(binary_lowpath_0004009b00010202);
+    
+    // savedatacheck/0004009b00010402.bin
+    u8 binary_lowpath_0004009b00010402[] = { 
+        0x02, 0x04, 0x01, 0x00, 0x9b, 0x00, 0x04, 0x00, 0x00, 0xff, 0xff, 0xff, 0x01, 0x00, 0x00, 0x00
+    };
+    DumpSharedRomFS(binary_lowpath_0004009b00010402);
+}
+
+} // namespace

source/utils/savedatacheck/savedatacheck.h

@@ -0,0 +1,11 @@
+// Copyright 2014 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+namespace SaveDataCheck {
+
+void Dump();
+
+}