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#!/bin/bash

# Requirements: 
# Device: ssh, plutil, modified bfdecrypt, NoAppThinning, AutoTouch, activator, Open for iOS 11
# macOS: jq, ios-deploy

# GLOBAL CONFIGURATION
readonly DEVICE_IP="localhost"
readonly DEVICE_PORT="2222"

# TIMESTAMP
timestamp() {
	date "+%H:%M:%S"
}

# LOG WITH STYLE
log_red () { echo -e "\033[0;31m[$(timestamp)] $1\033[0m"; }
log_green () { echo -e "\033[0;32m[$(timestamp)] ✔ $1\033[0m"; }
log_yellow () { echo -e "\033[1;33m[$(timestamp)] $1\033[0m"; }
log_cyan () { echo -e "\033[1;36m[$(timestamp)] $1\033[0m"; }
log_blue () { echo -e "\033[1;34m[$(timestamp)] $1\033[0m"; }

trap exit_script INT

# HELP MENU
helptext() {
	scr=$(basename $0)
	log_blue "USAGE: $scr <iTunes link>"
}

# ---------------------------- Cleanup ---------------------------------

cleanup() {
	log_yellow "Cleaning up..."
	
	# Return to home
	ssh -fq root@$DEVICE_IP -p $DEVICE_PORT 2> /dev/null 'activator send libactivator.system.homebutton'
	ssh -fq root@$DEVICE_IP -p $DEVICE_PORT 2> /dev/null 'activator send libactivator.system.homebutton'
	
	sleep 1
	
	# Remove unsigned ipa
	rm decrypted-app.ipa 2> /dev/null
	
	# Remove result.txt
	ssh -fq root@$DEVICE_IP -p $DEVICE_PORT 2> /dev/null "
		rm -rf /private/var/mobile/Documents/AutoTouch
	"
	
	# Disable bfdecrypt for app
	ssh -fq root@$DEVICE_IP -p $DEVICE_PORT 2> /dev/null "
		cd /var/mobile/Library/Preferences && plutil -rmkey "$BUNDLE_ID" com.level3tjg.bfdecrypt.plist >/dev/null
	"
	
	# Uninstall app
	ios-deploy -W -9 -1 $BUNDLE_ID &> /dev/null
}

exit_script() {
	cleanup
	exit 1
}

# If no arguments provided, invoke help text
[[ $@ ]] || { helptext; exit 0; }

# Check if device is connected with usb
is_connected="$(ios-deploy -c -W)"
if [[ $is_connected != *"Found"* ]]; then
	log_red "Looks like your device is not connected with USB. Aborting..."
	exit 1
fi

ITUNES_URL="$1"
ITUNES_URL="${ITUNES_URL/?mt=*/}" # Strip ending '?mt=*'

log_cyan "Searching iTunes..."

ITUNES_ID="${ITUNES_URL##*/}" # Get id

response=$(curl -s "https://itunes.apple.com/us/search?limit=200&term=$ITUNES_ID&media=software")
if [ "$response" == "" ]; then
	log_red "Got empty response... iTunes API is down?"
	exit 1
elif (( $(echo $response | jq .resultCount) < 1 )); then
	log_red "Failed to search iTunes API. Aborting..."
	exit 1
fi
result=$(echo $response | jq .results | jq .[0])

NAME=$(echo $result | jq -r .trackName)
TRACKID=$(echo $result | jq -r .trackId)
VERSION=$(echo $result | jq -r .version)
BUNDLE_ID=$(echo $result | jq -r .bundleId)

log_green "Ok, found this app:"
echo -e "\033[1;36m     [+] Name:		\033[0;31m$NAME"
echo -e "\033[1;36m     [+] Version:	\033[0;31m$VERSION"
echo -e "\033[1;36m     [+] Bundle id:	\033[0;31m$BUNDLE_ID"

# Reset BASH time counter
SECONDS=0

# Uninstall app before starting
ios-deploy -W -9 -1 $BUNDLE_ID &> /dev/null

log_yellow "SSHing to device..."

# ------------------------------ Download app ---------------------------------

download_commands="
	$(declare -f timestamp log_cyan)
	log_cyan '[SSH] Unlocking device if not awake...'
	activator send libactivator.system.homebutton
	sleep 1
	activator send libactivator.system.homebutton
	sleep 1
	log_cyan '[SSH] Opening App Store...'
 	uiopen $ITUNES_URL
	sleep 5
	log_cyan '[SSH] Trying to download $NAME...'
	sleep 1
	activator activate libactivator.statusbar.hold
	sleep 2
	mkdir -p /private/var/mobile/Documents/ && chown -R mobile:mobile /private/var/mobile/Documents/
"

ssh -q root@$DEVICE_IP -p $DEVICE_PORT 2> /dev/null <<-EOF
	$download_commands
EOF

# Wait for result.txt written by AutoTouch
ssh -q root@$DEVICE_IP -p $DEVICE_PORT 2> /dev/null 'max_retries=10; i=0; while [ -z "$(ls -A /private/var/mobile/Documents/AutoTouch)" ] && [ "$i" -le "$max_retries" ]; do ((i++)); sleep 0.5; done; [ "$i" -le "$max_retries" ] && exit 0 || exit 1'
if [ $? -ne 0 ]; then
	log_red "Error! Could not retrieve result.txt. Aborting..."
	exit_script
fi

# Check if app started downloading correctly (result==0)
ssh -q root@$DEVICE_IP -p $DEVICE_PORT 2> /dev/null 'cd /private/var/mobile/Documents/AutoTouch && exit `cat result.txt`'
if [ $? -ne 0 ]; then
	log_red "Error! Could not download app. Aborting..."
	exit_script
fi

log_green "Ok, app should be downloading..."

sleep 1

# ------------------------------ Wait for install ---------------------------------

log_yellow "Waiting for app to install..."

# Wait until app is installed
max_retries=400
i=0
while [ "$i" -le "$max_retries" ]; do
	is_installed="$(ios-deploy -W -e -1 $BUNDLE_ID)"
	if [[ ${is_installed: -4} == "true" ]]; then 
		break
	fi
	((i++)) 
	sleep 2
done

if [ "$i" -gt "$max_retries" ]; then
	log_red "Error! App did not install in time or did not install at all. Aborting..."
	exit_script
fi

sleep 1

log_green "Ok, app should be installed..."

sleep 1

# ------------------------------ Enable bfdecrypt ---------------------------------

log_yellow "Enabling bfdecrypt for '$BUNDLE_ID'..."

ssh -q root@$DEVICE_IP -p $DEVICE_PORT 2> /dev/null "
	cd /var/mobile/Library/Preferences && plutil -int 1 -key "$BUNDLE_ID" com.level3tjg.bfdecrypt.plist >/dev/null
"

sleep 0.5

# ---------------------------------- Open app --------------------------------------

log_yellow "Opening app..."

ssh -q root@$DEVICE_IP -p $DEVICE_PORT 2> /dev/null "
	find /var/mobile/Containers/Data/Application/ -name decrypted-app.ipa -exec rm "{}" \;
	open $BUNDLE_ID
"

sleep 1

# ----------------------------- Wait for decryption --------------------------------

log_green "Ok, waiting for decryption..."

sleep 1

ssh -q root@$DEVICE_IP -p $DEVICE_PORT 2> /dev/null 'max_retries=300; i=0; while [ -z "$(find /var/mobile/Containers/Data/Application/ -name decrypted-app.ipa)" ] && [ "$i" -le "$max_retries" ]; do ((i++)); sleep 1; done; [ "$i" -le "$max_retries" ] && exit 0 || exit 1'
if [ $? -ne 0 ]; then
	log_red "Error! App did not decrypt in time. Aborting..."
	exit_script
fi

sleep 1

# ------------------------------ Transfer ipa ---------------------------------

log_yellow "Found decrypted-app.ipa, transfering..."

mkdir -p ipas && cd ipas
echo -en "\033[1;36m"
ipa_path=$(ssh -q root@$DEVICE_IP -p $DEVICE_PORT 2> /dev/null "find /var/mobile/Containers/Data/Application/ -name decrypted-app.ipa")
scp -p -P $DEVICE_PORT root@$DEVICE_IP:$ipa_path .
if [ $? -ne 0 ]; then
	log_red "Error! Failed to transfer ipa. Aborting..."
	exit_script
fi

# ------------------------------ Filename ---------------------------------

VERSION_="${VERSION//(}" # delete ( character
VERSION_="${VERSION_//)}" # delete ) character
filename=$(echo $BUNDLE_ID | tr '[:upper:]' '[:lower:]') # make it all lowercase
filename="${filename}_${VERSION_}.ipa"

# ------------------------------ Rename .ipa ---------------------------------

mv decrypted-app.ipa $filename
size=$(du -m -s "$filename" | cut -f 1)
log_green "Done! File is at ./ipas/$filename [$size MB]"

# Do whatever you want with the ipa here: sign it, upload it somewhere etc...

# ---------------------------- Done! ---------------------------------

cleanup
elapsed_time="$(($SECONDS / 3600))h:$((($SECONDS / 60) % 60))m:$(($SECONDS % 60))s"
log_green "Done! Script ended in [$elapsed_time]"