# GodMode9 "Hello Script"
# Tutorial script - read / run this to learn how it works
# last changed: 20170906
# author: d0k3

# COMMENTS / SCRIPTING BASICS / 'echo' COMMAND
# Anything after '#' will be ignored by the scripting engine
# Commands and arguments are separated by whitespaces, any redundant whitespaces will be ignored
# Use '"' if an argument has to include whitespaces
# The echo command outputs info on screen
 echo  "'Hello Script'\nby d0k3\n \nThis is a sample script to\nshowcase the GM9 script engine." # comments work anywhere
# Unknown commands lead to script abort (remove the '#' below to test)
# iamunknown test test

# 'qr' COMMAND
# The 'qr' command does the same as the echo command, but also displays a QR code on the top screen
qr "Scan for cool stuff!" https://github.com/d0k3/GodMode9

# 'ask' COMMAND
# The 'ask' command is similar to the 'echo' command, but will allow the user to abort
# Note that normally any failed command (like a negative user response on 'ask') will result in script abort
ask "Continue running this script?"

# (-o/-s) SWITCHES
# You may use the -o / --optional and -s / --silent switches on any command
# -o / --optional continues on failures
# -s / --silent tries to suppress all error messages
# This would have completely ignored the user response on the previous command:
ask -o -s "Really continue running this script?\n(I will completely ignore your answer)"

# ENVIRONMENTAL VARS
# GM9VER is the GodMode9 version number
# REGION is the region of your device's SysNAND (USA, EUR, JPN, KOR, CHN, TWN or UNK for unknown)
# SERIAL is the serial number of your device
# GM9OUT is the standard output path
# CURRDIR is the directory the script is running from
# HAX is the hax the system is currently running from ("ntrboot", "sighax", "a9lh" or empty)
# ONTYPE is the console type ("O3DS" or "N3DS")
# RDTYPE is the unit type ("devkit" or "retail")
# SYSID0 is the id0 belonging to your SysNAND
# EMUID0 is the id0 belonging to your EmuNAND (if available)
# TIMESTAMP is the current time in hhmmss format
# DATESTAMP is the current date in YYMMDD format
# Use $[VAR] to get the *content* of a variable VAR
echo "Your GodMode9 version is $[GM9VER]\nYour region is $[REGION]\nYour serial number is $[SERIAL]\nYour std output path is $[GM9OUT]\nCurrent dir is $[CURRDIR]\nCurrent hax is $[HAX]\nYour system is a $[RDTYPE] $[ONTYPE]\nCurrent datestamp is: $[DATESTAMP]\nCurrent timestamp is: $[TIMESTAMP]\n \nYour sys / emu ID0 is:\n$[SYSID0]\n$[EMUID0]"
qr "You can also have this as a QR code :)" "Your GodMode9 version is $[GM9VER]\nYour region is $[REGION]\nYour serial number is $[SERIAL]\nYour std output path is $[GM9OUT]\nCurrent dir is $[CURRDIR]\nCurrent hax is $[HAX]\nYour system is a $[RDTYPE] $[ONTYPE]\nCurrent datestamp is: $[DATESTAMP]\nCurrent timestamp is: $[TIMESTAMP]\n \nYour sys / emu ID0 is:\n$[SYSID0]\n$[EMUID0]"

# ERRORMSG and SUCCESSMSG / 'set' COMMAND
# These two are special environment vars, allowing you to control the message on script failure or success
set ERRORMSG "HelloScript testing script failed"
set SUCCESSMSG "HelloScript testing script success"
# you can also reset these to return to default script messages
# set ERRORMSG ""
# set SUCCESSMSG ""

# 'chk' COMMAND
# Using the check command, you can check if two arguments match (not case sensitive)
# -u / -unequal check if not matching instead
# These checks will (most likely) pass
chk "hello" "HeLlo"
chk "0:/gm9/out" $[GM9OUT]
chk $[SYSID0] $[SYSID0]
# unsure about these
chk -o $[HAX] "sighax"
chk -o -u $[HAX] "" 

# PREVIEW_MODE, PREVIEW_COLOR_ACTIVE, PREVIEW_COLOR_COMMENT and PREVIEW_COLOR_CODE
# PREVIEW_MODE controls how the preview on the top screen is displayed, set it it to off, quick or full
# PREVIEW_COLOR_ACTIVE, PREVIEW_COLOR_COMMENT and PREVIEW_COLOR_CODE set the colors of the preview (RGB, hex)
set PREVIEW_MODE quick
# we don't want these ugly colors
# set PREVIEW_COLOR_ACTIVE 00FF00
# set PREVIEW_COLOR_COMMENT 0000FF
# set PREVIEW_COLOR_CODE FF0000

# CREATING VARS
# You can also create new variables using 'set'
# Notice how you can use variables when setting variables
set TESTPATH 0:/testdir/$[SERIAL]_tick.db
echo "Your testpath is:\n$[TESTPATH]"

# 'input' COMMAND
# The 'input' command will allow the user to input a string and store that string in a variable
# Preset the variable to have an initial value
set USERINPUT "Hello World"
input "Enter something please?" USERINPUT
echo "You entered:\n$[USERINPUT]"

# 'strsplit' COMMAND
# The 'strsplit' command extracts a substring from a string
# -b / --before extracts the substring *before* the split char
# -f / --first matches the first, not last occurence of the split char
strsplit TESTSPLIT1 "one/two/three" "/"
strsplit -b TESTSPLIT2 "one/two/three" "/"
strsplit -f TESTSPLIT3 "one/two/three" "/"
strsplit -b -f TESTSPLIT4 "one/two/three" "/"
echo "one/two/three\n$[TESTSPLIT1]\n$[TESTSPLIT2]\n$[TESTSPLIT3]\n$[TESTSPLIT4]"

# strrep COMMAND
# The 'strrep' command replaces one char with another inside a string
# notice how we use TESTREP both as input and output
set TESTREP "Hello_World"
strrep TESTREP $[TESTREP] "_ "
echo $[TESTREP]

# 'filesel' COMMAND
# The 'filesel' command allows the user to choose a file inside a directory
# The path is stored inside a variable, and the selection can be limited via wildcards
# -d / --include_dirs allows to browse folders and select files inside
# -x / --explorer uses new style file selector like main file explorer
filesel "Please select a file" 0:/*.* SELFILE

# 'dirsel' COMMAND
# The 'dirsel' command works identically to the 'filesel' command, but allows selecting a dir
# Note that a final slash ('/') is not expected here and there can be no wildcard pattern.
# -x / --explorer uses new style file selector like main file explorer
dirsel "Now, select a dir" 0: SELDIR
echo "You selected $[SELFILE]\nand $[SELDIR]\nWe'll do nothing with either :)."

# 'allow' COMMAND
# typically used at the beginning of a script, prompts to allow writes to the location given in the argument
# doing this from the beginning is preferable, so that no actions are taken unless all required write permissions are unlocked
# (note #1: without 'allow', write permissions are still in place and the user will be asked on demand)
# (note #2: this simple testing script requires no additional permissions, thus the command is hidden behind a '#')
# -a / --all allows writes to the specified location and all included files and directories
# allow -a M:/

# 'rm' COMMAND
# The 'rm' command is used to remove files and directories (recursively)
# Here, we remove the dir if it is still here from an earlier run of this script
# If it is not here, we ignore any errors and keep silent about it
rm -o -s 0:/testdir

# 'mkdir' COMMAND
# Use this to create a directory at the specified location
mkdir 0:/testdir

# 'imgmount' COMMAND
# The 'imgmount' command is used to mount an image.
# An image can be (among other things) FAT, NAND, NCCH, NCSD, FIRM, ticket.db...
imgmount S:/ctrnand_full.bin

# 'cp' COMMAND
# Use 'cp' to copy a file or directory (recursively)
# -h / --hash also adds a .sha file containing the files SHA256
# -w / --overwrite forces overwrite on existing files (disables -k and -p)
# -k / --skip forces skip on existing files (disables -p)
# -p / --append will append copied files to the end of existing files (disables -h)
# -n / --no_cancel prevents user cancels (useful on critical operations)
cp -h -w -n 7:/dbs/ticket.db  $[TESTPATH]

# 'imgumount' COMMAND
# This unmounts the current mounted image.
imgumount

# 'findnot' COMMAND
# Use 'findnot' in conjunction with '?' to find an unused filename
findnot $[TESTPATH]_???.rn RENPATH

# 'mv' COMMAND
# The 'mv' command renames or moves a file or directory
# -w / --overwrite forces overwrite on existing files (disables -k)
# -k / --skip forces skip on existing files
# -n / --no_cancel prevents user cancels (useful on critical operations)
mv -w -k $[TESTPATH] $[RENPATH]

# 'find' COMMAND
# The 'find' command has two main uses, (1) checking if files / dirs exist and (2) finding files / dirs
# Here we use it to check for RENPATH, thus we use NULL as second argument (we're not interested in the output)
find $[RENPATH] NULL
# Wildcards ('*' / '?') are allowed when searching for a file / directory name
# If wildcards are used, 'find' will return the last alphanumerical match
# -f / --first return the first alphanumerical match instead
find S:/nand.* NANDIMAGE

# 'sha' COMMAND
# Use this to check a files' SHA256
sha $[RENPATH] $[TESTPATH].sha
# Instead of an .sha file you can also use the SHA256 in hex as second argument
# sha S:/sector0x96.bin 82F2730D2C2DA3F30165F987FDCCAC5CBAB24B4E5F65C981CD7BE6F438E6D9D3
# This also allows partial SHA checks (for @x:y handling see 'inject' below)
# sha S:/firm0.bin@100:100 078CC0CFD850A27093DDA2630C3603CA0C96969BD1F26DA48AC7B1BAE5DD5219

# 'shaget' COMMAND
# Use this to calculate (and store) a files' SHA256
# If the second argument is a filename, the SHA256 will be stored there
# shaget 0:/boot.firm 0:/boot.firm.sha
# If it's a variable, it will be stored there temporarily instead
shaget S:/nand_hdr.bin NANDHDRSHA
sha S:/nand_hdr.bin $[NANDHDRSHA]
# Partial SHA calculation is also possible (for @x:y handling see 'inject' below)
# shaget 0:/boot.firm@100:100 0:/boot.firm.partial.sha

# 'inject' COMMAND
# This command is used to inject part of one file into another
# The syntax is: inject origin@x:y destination@z
#                x: origin offset (in hex)
#                y: origin size, starting at x (in hex)
#                z: destination offset (in hex)
# If destination does not exist or z is not given, a new destination file will be created(!)
# If x is not given, the full origin file size, starting from offset 0, is used to inject
# If y is not given, everything starting from offset x is used to inject
# -n / --no_cancel prevents user cancels (useful on critical operations)
inject S:/nand_hdr.bin@100:4 $[RENPATH]@200 # offsets and sizes are in hex
# As we just deliberately corrupted our test file, the subsequent SHA check will fail
set ERRORMSG "SHA check failed (this was expected)"
sha -o $[RENPATH] $[TESTPATH].sha
set ERRORMSG ""

# 'fdummy' COMMAND
# This command creates a dummy file of the specified size (size in hex)
# Contents of the dummy file are undefined and existing files won't be overwritten
set DUMMY 0:/testdir/dummy.bin
fdummy $[DUMMY] 400

# 'fill' COMMAND
# This command fills (a portition of) a file with the specified byte value
# The syntax is: fill destination@x:y fillbyte
#                x: destination offset (in hex)
#                y: destination size, starting at x (in hex)
# If x is not given, the full file size, starting from offset 0, is overwritten
# If y is not given, everything starting from offset x is overwritten
# -n / --no_cancel prevents user cancels (useful on critical operations)
fill $[DUMMY]@100:100 FF
fill $[DUMMY]@300 80

# 'fset' COMMAND
# This command sets a portition of a file with the specified data in hex
# The syntax is: fset destination@x hexdata
#                x: destination offset (in hex)
#                y: bytes to write (in hex) (must be lower than hexdata size)
# If x is not given, data is inserted at the beginning of the file
# If y is not given, all of hexdata is written to the file
# -e / --flip_endian flips the order of the bytes
fset $[DUMMY]@100 48454c4c4f # 'HELLO'

# 'fget' COMMAND
# This command reads data from a file and stores it in a var
# The syntax is: fset origin@x:y var
#                x: origin offset (in hex)
#                y: origin size, starting at x (in hex)
# Both x and y have to be set(!)
# -e / --flip_endian flips the order of the bytes
fget -e $[DUMMY]@100:5 OLLEH
echo "This is 'HELLO', in hex and reverse:\n$[OLLEH]"

# 'dumptxt' COMMAND
# This command dumps the given text to a file
# -p / --append appends text instead of writing a new file
# dumptxt 0:/hello.txt HELLO
# dumptxt -p 0:/hello.txt WORLD

# 'fixcmac' COMMAND
# Use this to fix the CMACs for a file or a whole folder (recursively)
# This will count as success if a file does not contain a CMAC
# More info on CMACs: http://3dbrew.org/wiki/Savegames#AES_CMAC_header
# fixcmac 1:/data

# 'verify' COMMAND
# Certain file formats (NAND, NCCH, NCSD, CIA, FIRM, ...) can also be verified. Use 'verify' to do so.
# verify -o s:/firm0.bin # As drive letters are case sensitive, this would fail
verify S:/firm1.bin

# 'decrypt' COMMAND
# Certain file formats (NCCH, NCSD, CIA, FIRM, BOSS, ...) can be decrypted. Use 'decrypt' to do so.
# Take note that all crypto operations are done INPLACE and will overwrite the file(!)
# decrypt 0:/x.ncch

# 'encrypt' COMMAND
# Certain file formats (NCCH, NCSD, CIA, BOSS, ...) can be encrypted. Use 'encrypt' to do so.
# Take note that all crypto operations are done INPLACE and will overwrite the file(!)
# encrypt 0:/x.ncch

# 'buildcia' COMMAND
# You can build CIA files from certain file formats (TMD, NCCH, NCSD ...). Use 'buildcia' to do so.
# CIA files will always be built to the standard output directory (0:/gm9/out)
# -l / --legit force CIA to be legit (only works for legit system installed titles)
# buildcia 0:/x.ncch

# 'extrcode' COMMAND
# You can extract the binary code from any file that contains it (NCSD, NCCH, CXI).
# Specify the containing file and the file to write to.
# If the code is compressed, it will be decompressed.
# C:/titleid.3ds 0:/gm9/out/titleid.dec.code

# 'cmprcode' COMMAND
# Attempt to open a file as uncompressed binary code and compress it into the 3DS's reverse LZSS format.
# Specify the source file and the file to write to.
# 0:/gm9/out/titleid.dec.code 0:/gm9/out/titleid.code

# 'sdump' COMMAND
# This command dumps a supported file to the standard output directory (0:/gm9/out)
# Supported files: encTitleKeys.bin, decTitleKeys.bin, seeddb.bin
# -w / --overwrite overwrite existing files without asking
# sdump encTitleKeys.bin
# sdump decTitleKeys.bin
# sdump seeddb.bin

# 'applyips' COMMAND
# This will apply the given IPS-formatted delta patch (argument 1) to the specified file (argument 2)
# to produce the patched file (argument 3). 2 and 3 may be the same to perform an in-place patch.
# applyips 0:/example/patch.ips 0:/data/original.bin 0:/game/modded.bin

# 'applybps' COMMAND
# This will apply the given BPS-formatted delta patch (argument 1) to the specified file (argument 2)
# to produce the patched file (argument 3).
# applybps 0:/example/patch.bps 0:/data/original.bin 0:/game/modded.bin

# 'applybpm' COMMAND
# This will apply the given BPM-formatted delta patch (argument 1) to the specified directory (argument 2)
# to produce a directory containing patched files (argument 3).
# applybpm 0:/example/patch.bpm 0:/data/originalfolder 0:/game/moddedfolder

# 'textview' COMMAND
# This will show a text file on screen, in a dedicated text viewer. Size restrictions apply (max 1MiB)
# textview 0:/sometext.txt

# 'boot' COMMAND
# Use this command to chainload a compatible FIRM
# boot 0:/boot.firm
# disabled cause it would leave the script

# 'switchsd' COMMAND
# Use this to allow the user to switch the SD card
# switchsd "Please switch SD card."

# 'reboot' / 'poweroff' COMMAND
# These are used to reboot or power off the 3DS console
set ERRORMSG "Test script finished,\n(without reboot)\n \nIgnore the error message."
ask "Reboot now?"
reboot
poweroff # this line can never be reached