filtering_disabler_en.gm9

set PREVIEW_MODE "JPN n3DS Filtering Disabler\n \nMade by windows-server-2003"

set MSG_ERR_O3DS "O3DS is not supported"
set MSG_ERR_UNSUPPORTED_GM9VER "Your GodMode9 is outdated\nPlease update to the latest version"
set MSG_CONFIRM_NONJPN_REGION "Non-JPN region detected\n \nDo you want to proceed anyway?"
set MSG_ERR_NO_SAVEDATA "Browser savedata not found\n \nMake sure you have opened the browser at least once"
set MSG_ERR_FAILED_TO_MOUNT "Invalid browser savedata(failed to mount)"
set MSG_ASK_ENABLE "Filtering is currently disabled\n \nDo you want to enable it?"
set MSG_ASK_DISABLE "Filtering is currently enabled\n \nDo you want to disable it?"
set MSG_ERR_UNKNOWN_VALUE "Invalid browser savedata\n0x3090:"
set MSG_PERMISSION_DENIED "Permission denied"
set MSG_SUCCESS_DISABLING "Successfully disabled the filtering"
set MSG_SUCCESS_ENABLING "Successfully enabled the filtering"

# https://www.3dbrew.org/wiki/Internet_Browser#0x000200BB_savedata
# It seems that 0x3090-th byte of partitionA.bin is 00 by default and 01 if the filtering is disabled
set SAVE_PATH 1:/data/$[SYSID0]/sysdata/000200bb/00000000

# Version check
if chk $[GM9VER] "v1.9.1" # v1.9.1 and below doesn't correct CMAC when writing to mounted DISA/DIFF
	echo $[MSG_ERR_UNSUPPORTED_GM9VER]
	goto FAIL
elif chk $[GM9VER] "v1.9.0"
	echo $[MSG_ERR_UNSUPPORTED_GM9VER]
	goto FAIL
elif chk $[GM9VER] "v1.8.0" # v1.8.0 and below doesn't support DISA/DIFF mounting
	echo $[MSG_ERR_UNSUPPORTED_GM9VER]
	goto FAIL
elif chk $[GM9VER] "v1.7.1"
	echo $[MSG_ERR_UNSUPPORTED_GM9VER]
	goto FAIL
elif chk $[GM9VER] "v1.7.0"
	echo $[MSG_ERR_UNSUPPORTED_GM9VER]
	goto FAIL
end # I don't care below this

# Precheck
if chk $[ONTYPE] O3DS
	echo $[MSG_ERR_O3DS]
	goto FAIL
end
if not chk $[REGION] JPN
	ask -s $[MSG_CONFIRM_NONJPN_REGION]
end
if not find $[SAVE_PATH] NULL
	echo $[MSG_ERR_NO_SAVEDATA]
	goto FAIL
end

imgumount
if not imgmount $[SAVE_PATH]
	echo $[MSG_ERR_FAILED_TO_MOUNT]
	goto FAIL
end

fget D:/partitionA.bin@3090:1 FILTERING_DISABLED_VALUE
if chk $[FILTERING_DISABLED_VALUE] 00 # Currently enabled
	set ASK_SENTENCE $[MSG_ASK_DISABLE]
	set SUCCESSMSG $[MSG_SUCCESS_DISABLING]
	set WRITE_VALUE 01
elif chk $[FILTERING_DISABLED_VALUE] 01 # Currently disabled
	set ASK_SENTENCE $[MSG_ASK_ENABLE]
	set SUCCESSMSG $[MSG_SUCCESS_ENABLING]
	set WRITE_VALUE 00
else
	echo $[MSG_ERR_UNKNOWN_VALUE]$[FILTERING_DISABLED_VALUE]
	goto FAIL
end
if not ask $[ASK_SENTENCE]
	goto FAIL
end

# Acquire permission
if not allow $[SAVE_PATH]
	echo $[MSG_PERMISSION_DENIED]
	goto FAIL
end

fset D:/partitionA.bin@3090 $[WRITE_VALUE]
goto EXIT

@FAIL
imgumount
chk -s a b

@EXIT
imgumount