* Added new nand emulation feature:

With this feature it's possible to temp change the region of your Wii console. This makes it possible to play those one region only games that wouldn't play on other region consoles. 

Some games that work now are for example:

The Amazing Race (didn't play on PAL consoles)
Hollywood Squares (didn't play on PAL consoles)
Arthur and the Revenge of Maltazard (didn't play on NTSC consoles)

The feature is now working for Wii games if FULL nand emulation is enabled. The Regionswitch only emulation mode is written for and will only work with a yet unreleased feature of davebaol's d2x cIOS

* Updated english.ini
* Updated dutch.ini

Other languages have to change also again :P

source/channel/nand.cpp

@@ -1,6 +1,7 @@
 /***************************************************************************
- * Copyright (C) 2011
+ * Copyright (C) 2011 by Miigotu
- * by Miigotu
+ *           (C) 2012 by OverjoY for Wiiflow-mod
+ *
  * Rewritten code from Mighty Channels and Triiforce
  *
  * This software is provided 'as-is', without any express or implied
@@ -38,6 +39,16 @@
 #include "gecko.h"
 #include "mem2.hpp"
 
+u8 *confbuffer;
+u8 CCode[0x1008];
+char SCode[4];
+char *txtbuffer;
+
+config_header *cfg_hdr;
+
+bool tbdec = false;
+bool configloaded = false;
+
 static NandDevice NandDeviceList[] = {
 	{ "Disable",						0,	0x00,	0x00 },
 	{ "SD/SDHC Card",					1,	0xF0,	0xF1 },
@@ -123,7 +134,7 @@ s32 Nand::Nand_Disable(void)
 	s32 fd = IOS_Open("/dev/fs", 0);
 	if (fd < 0) return fd;
 
-	static u32 inbuf ATTRIBUTE_ALIGN(32) = 0;
+	u32 inbuf ATTRIBUTE_ALIGN(32) = 0;
 	s32 ret = IOS_Ioctl(fd, 100, &inbuf, sizeof(inbuf), NULL, 0);
 	IOS_Close(fd);
 
@@ -175,4 +186,254 @@ void Nand::Set_NandPath(string path)
 
 	if(path.size() <= 32)
 		memcpy(NandPath, path.c_str(), path.size());
-}
+}
+
+void Nand::__Dec_Enc_TB(void) 
+{	
+	u32 key = 0x73B5DBFA;
+    int i;
+    
+	for( i=0; i < 0x100; ++i ) 
+	{    
+		txtbuffer[i] ^= key&0xFF;
+		key = (key<<1) | (key>>31);
+	}
+	
+	tbdec = tbdec ? false : true;
+}
+
+void Nand::__configshifttxt(char *str)
+{
+	const char *ptr = str;
+	char *ctr = str;
+	int i;
+	int j = strlen(str);
+	
+	for( i=0; i<j; ++i )
+	{		
+		if( strncmp( str+(i-3), "PALC", 4 ) == 0 )
+			*ctr = 0x0d;
+		else if( strncmp( str+(i-2), "LUH", 3 ) == 0 )
+			*ctr = 0x0d;
+		else if( strncmp( str+(i-2), "LUM", 3 ) == 0 )	
+			*ctr = 0x0d;
+		else 
+			*ctr = str[i];
+
+		ctr++;
+	}	
+	*ctr = *ptr;
+	*ctr = '\0';
+}
+
+s32 Nand::__configread(void)
+{
+	confbuffer = (u8 *)MEM2_alloc(0x4000);
+	txtbuffer = (char *)MEM2_alloc(0x100);
+	cfg_hdr = (config_header *)NULL;
+	
+	FILE *f = fopen(cfgpath, "rb");
+	if(f)
+	{
+		fread(confbuffer, 1, 0x4000, f);
+		gprintf("SYSCONF readed from: %s \n", cfgpath);
+		fclose(f);
+	}
+		
+	f = fopen(settxtpath, "rb");
+	if(f)
+	{
+		fread(txtbuffer, 1, 0x100, f);
+		gprintf("setting.txt readed from: %s \n", settxtpath);
+		fclose(f);
+	}
+		
+	cfg_hdr = (config_header *)confbuffer;
+		
+	__Dec_Enc_TB();
+	
+	configloaded = configloaded ? false : true;
+	
+	if(tbdec && configloaded)
+		return 1;		
+	
+	return 0;	
+}
+
+s32 Nand::__configwrite(void)
+{
+	if(configloaded)
+	{
+		__Dec_Enc_TB();
+		
+		if(!tbdec)
+		{
+			FILE *f = fopen(cfgpath, "wb");
+			if(f)
+			{
+				fwrite(confbuffer, 1, 0x4000, f);
+				gprintf("SYSCONF written to: %s \n", cfgpath);
+				fclose(f);
+			}
+				
+			f = fopen(settxtpath, "wb");
+			if(f)
+			{
+				fwrite(txtbuffer, 1, 0x100, f);
+				gprintf("setting.txt written to: %s \n", settxtpath);
+				fclose(f);
+			}		
+				
+			configloaded = configloaded ? false : true;
+			
+			if(!tbdec && !configloaded)
+				return 1;			
+		}
+	}
+	MEM2_free(confbuffer);
+	MEM2_free(txtbuffer);
+	return 0;			
+} 
+
+u32 Nand::__configsetbyte(const char *item, u8 val)
+{
+	u32 i;
+	for(i=0; i<cfg_hdr->ncnt; ++i)
+	{
+		if(memcmp(confbuffer+(cfg_hdr->noff[i] + 1), item, strlen(item)) == 0)
+		{
+			*(u8*)(confbuffer+cfg_hdr->noff[i] + 1 + strlen(item)) = val;
+			break;
+		}
+	}
+	return 0;
+}
+
+u32 Nand::__configsetbigarray(const char *item, void *val, u32 size)
+{
+	u32 i;
+	for(i=0; i<cfg_hdr->ncnt; ++i)
+	{
+		if(memcmp(confbuffer+(cfg_hdr->noff[i] + 1), item, strlen(item)) == 0)
+		{
+			memcpy(confbuffer+cfg_hdr->noff[i] + 3 + strlen(item), val, size);
+			break;
+		}
+	}
+	return 0;
+}
+
+u32 Nand::__configsetsetting(const char *item, const char *val)
+{		
+	char *curitem = strstr(txtbuffer, item);
+	char *curstrt, *curend;
+	
+	if(curitem == NULL)
+		return 0;
+	
+	curstrt = strchr(curitem, '=');
+	curend = strchr(curitem, 0x0d);
+	
+	if( curstrt && curend )
+	{
+		curstrt += 1;
+		u32 len = curend - curstrt;
+		if( strlen( val ) > len )
+		{
+			static char buffer[0x100];
+			u32 nlen;
+			nlen = txtbuffer-(curstrt+strlen(val));
+			strcpy( buffer, txtbuffer+nlen );
+			strncpy( curstrt, val, strlen(val));
+			curstrt += strlen(val); 
+			strncpy(curstrt, buffer, strlen(buffer));
+		}
+		else
+		{
+			strncpy(curstrt, val, strlen(val));
+		}
+
+		__configshifttxt(txtbuffer);
+
+		return 1;
+	}
+	return 0;
+}
+
+s32 Nand::Do_Region_Change(string id, char *path)
+{
+	bzero(cfgpath, MAX_FAT_PATH);	
+	bzero(settxtpath, MAX_FAT_PATH);
+	
+	snprintf(cfgpath, sizeof(cfgpath), "%s/shared2/sys/SYSCONF", path);
+	snprintf(settxtpath, sizeof(settxtpath), "%s/title/00000001/00000002/data/setting.txt", path);
+	
+	if(__configread())
+	{
+		switch(id[3])
+		{
+			case 'J':
+			{
+				gprintf("Switching region to NTSC-j \n");
+				CCode[0] = 1;
+				__configsetbyte( "IPL.LNG", 0 );				
+				__configsetbigarray( "SADR.LNG", CCode, 0x1007 );
+				__configsetsetting( "AREA", "JPN" );
+				__configsetsetting( "MODEL", "RVL-001(JPN)" );
+				__configsetsetting( "CODE", "LJM" );
+				__configsetsetting( "VIDEO", "NTSC" );
+				__configsetsetting( "GAME", "JP" );								
+			} break;
+			case 'E':
+			{
+				gprintf("Switching region to NTSC-u \n");
+				CCode[0] = 31;
+				__configsetbyte( "IPL.LNG", 1 );				
+				__configsetbigarray( "IPL.SADR", CCode, 0x1007 );
+				__configsetsetting( "AREA", "USA" );
+				__configsetsetting( "MODEL", "RVL-001(USA)" );
+				__configsetsetting( "CODE", "LU" );
+				__configsetsetting( "VIDEO", "NTSC" );
+				__configsetsetting( "GAME", "US" );									
+			} break;
+			case 'D':
+			case 'F':
+			case 'I':
+			case 'M':
+			case 'P':
+			case 'S':
+			case 'U':					
+			{
+				gprintf("Switching region to PAL \n");
+				CCode[0] = 110;
+				__configsetbyte( "IPL.LNG", 6 );				
+				__configsetbigarray( "IPL.SADR", CCode, 0x1007 );
+				__configsetsetting( "AREA", "EUR" );
+				__configsetsetting( "MODEL", "RVL-001(EUR)" );
+				__configsetsetting( "CODE", "LEH" );
+				__configsetsetting( "VIDEO", "PAL" );
+				__configsetsetting( "GAME", "EU" );								
+			} break;
+			case 'K':					
+			{
+				gprintf("Switching region to NTSC-k \n");
+				CCode[0] = 137;
+				__configsetbyte( "IPL.LNG", 9 );				
+				__configsetbigarray( "IPL.SADR", CCode, 0x1007 );
+				__configsetsetting( "AREA", "KOR" );
+				__configsetsetting( "MODEL", "RVL-001(KOR)" );
+				__configsetsetting( "CODE", "LKM" );
+				__configsetsetting( "VIDEO", "NTSC" );
+				__configsetsetting( "GAME", "KR" );
+			} break;		
+		}
+	}
+	__configwrite();
+	return 1;	
+}
+	
+	
+	
+	
+	
+	

source/channel/nand.hpp

@@ -27,6 +27,13 @@ typedef struct nandDevice
 	u32 Unmount;
 } NandDevice; 
 
+typedef struct _config_header 
+{
+	u8		magic[4];
+	u16		ncnt;
+	u16		noff[];
+} config_header;
+
 using namespace std;
 
 class Nand
@@ -42,11 +49,14 @@ class Nand
 
 		void Set_Partition(u32 partition) { Partition = partition; };
 		void Set_FullMode(bool fullmode) { FullMode = fullmode ? 0x100 : 0; };
+		void Set_RCMode(bool rcmode) { FullMode = rcmode ? 0x40 : 0; };
 
 		const char * Get_NandPath(void) { return NandPath; };
 		u32 Get_Partition(void) { return Partition; };
 
 		void Set_NandPath(string path);
+		
+		s32 Do_Region_Change(string id, char *path);
 
 	private:
 		Nand() : MountedDevice(0), EmuDevice(REAL_NAND), Disabled(true), Partition(0), FullMode(0x100), NandPath() {}
@@ -57,6 +67,13 @@ class Nand
 		s32 Nand_Unmount(NandDevice *Device);
 		s32 Nand_Enable(NandDevice *Device);
 		s32 Nand_Disable(void);
+		void __Dec_Enc_TB(void);
+		void __configshifttxt(char *str);
+		s32 __configread(void);
+		s32 __configwrite(void);
+		u32 __configsetbyte(const char *item, u8 val);
+		u32 __configsetbigarray(const char *item, void *val, u32 size);
+		u32 __configsetsetting(const char *item, const char *val);
 
 		u32 MountedDevice;
 		u32 EmuDevice;
@@ -65,6 +82,8 @@ class Nand
 		u32 Partition ATTRIBUTE_ALIGN(32);
 		u32 FullMode ATTRIBUTE_ALIGN(32);
 		char NandPath[32] ATTRIBUTE_ALIGN(32);
+		char cfgpath[1024] ATTRIBUTE_ALIGN(32);
+		char settxtpath[1024] ATTRIBUTE_ALIGN(32);
 
 		static Nand * instance;
 };

source/menu/menu.hpp

@@ -974,8 +974,8 @@ private:
 	static const SOption _GClanguages[8];
 
 	static const SOption _NandEmu[3];
-	static const SOption _SaveEmu[4];
+	static const SOption _SaveEmu[5];
-	static const SOption _GlobalSaveEmu[3];
+	static const SOption _GlobalSaveEmu[4];
 	static const SOption _AspectRatio[3];
 	static const SOption _NMM[4];
 	static const SOption _vidModePatch[4];

source/menu/menu_config_game.cpp

@@ -901,7 +901,7 @@ void CMenu::_textGameSettings(void)
 	m_btnMgr.setText(m_gameSettingsBtnCategoryMain, _t("cfgg16", L"Select"));
 	m_btnMgr.setText(m_gameSettingsLblHooktype, _t("cfgg18", L"Hook Type"));
 	m_btnMgr.setText(m_gameSettingsLblDebugger, _t("cfgg22", L"Debugger"));
-	m_btnMgr.setText(m_gameSettingsLblEmulation, _t("cfgg24", L"Savegame Emulation"));
+	m_btnMgr.setText(m_gameSettingsLblEmulation, _t("cfgg24", L"Nand emulation"));
 	m_btnMgr.setText(m_gameSettingsLblIOSreloadBlock, _t("cfgg26", L"Disable IOS Reload block"));
 	m_btnMgr.setText(m_gameSettingsLblAspectRatio, _t("cfgg27", L"Aspect Ratio"));
 	m_btnMgr.setText(m_gameSettingsLblNMM, _t("cfgg28", L"NMM"));

source/menu/menu_game.cpp

@@ -144,16 +144,18 @@ const CMenu::SOption CMenu::_NandEmu[3] = {
 	{ "NANDfull", L"Full" },
 };
 
-const CMenu::SOption CMenu::_GlobalSaveEmu[3] = {
+const CMenu::SOption CMenu::_GlobalSaveEmu[4] = {
 	{ "SaveOffG", L"Off" },
-	{ "SavePartG", L"Partial" },
+	{ "SavePartG", L"Game save" },
+	{ "SaveRegG", L"Regionswitch" },
 	{ "SaveFullG", L"Full" },
 };
 
-const CMenu::SOption CMenu::_SaveEmu[4] = {
+const CMenu::SOption CMenu::_SaveEmu[5] = {
 	{ "SaveDef", L"Default" },
 	{ "SaveOff", L"Off" },
-	{ "SavePart", L"Partial" },
+	{ "SavePart", L"Game save" },
+	{ "SaveReg", L"Regionswitch" },
 	{ "SaveFull", L"Full" },
 };
 
@@ -1006,7 +1008,15 @@ void CMenu::_launchGame(dir_discHdr *hdr, bool dvd)
 	{
 		char basepath[64];
 		snprintf(basepath, 64, "%s:%s", DeviceName[emuPartition], emuPath.c_str());
-		CreateSavePath(basepath, hdr);
+		if(emuSave == 2 || emuSave > 3)
+		{
+			CreateSavePath(basepath, hdr);
+		}
+		if(emuSave > 2)
+		{
+			//Nand::Instance()->CreateConfig(basepath); // TODO: Write config files if they don't excist
+			Nand::Instance()->Do_Region_Change(id, basepath);
+		}
 	}
 
 		int gameIOS = 0;
@@ -1121,6 +1131,8 @@ void CMenu::_launchGame(dir_discHdr *hdr, bool dvd)
 		DeviceHandler::Instance()->UnMount(emuPartition);
 		
 		if (emuSave == 3)
+			Nand::Instance()->Set_RCMode(true);
+		else if (emuSave == 4)
 			Nand::Instance()->Set_FullMode(true);
 		else
 			Nand::Instance()->Set_FullMode(false);

wii/wiiflow/Languages/dutch.ini

@@ -62,7 +62,7 @@ cfgg2=Video modus
 cfgg21=Terugkeren naar kanaal
 cfgg22=Foutopsporing
 cfgg23=Cheat bestand aan het downloaden....
-cfgg24=Spelopslag Emulatie
+cfgg24=Nand emulatie
 cfgg25=Wachtwoord incorrect
 cfgg26=IOS Reload block Uitschakelen
 cfgg27=Beeldverhouding
@@ -187,8 +187,10 @@ SaveFull=Volledig
 SaveFullG=Volledig
 SaveOff=Uit
 SaveOffG=Uit
-SavePart=Gedeeltelijk
+SavePart=Spelopslag
-SavePartG=Gedeeltelijk
+SavePartG=Spelopslag
+SaveReg=Regioswitch
+SaveRegG=Regioswitch 
 snes=Super Nintendo
 sys1=Systeem
 sys2=WiiFlow Versie:

wii/wiiflow/Languages/english.ini

@@ -62,7 +62,7 @@ cfgg2=Video mode
 cfgg21=Return To Channel
 cfgg22=Debugger
 cfgg23=Downloading cheat file....
-cfgg24=Savegame Emulation
+cfgg24=Nand emulation
 cfgg25=Password incorrect
 cfgg26=Disable IOS Reload block
 cfgg27=Aspect Ratio
@@ -192,8 +192,10 @@ SaveFull=Full
 SaveFullG=Full
 SaveOff=Off
 SaveOffG=Off
-SavePart=Partial
+SavePart=Game save
-SavePartG=Partial
+SavePartG=Game save
+SaveReg=Regionswitch
+SaveRegG=Regionswitch
 snes=Super Nintendo
 sys1=Update WiiFlow
 sys2=WiiFlow Version: