Simple downloader for DualSense controllers

download_ds_firmware.sh

#!/bin/bash

VID="054c"
DS_PID="0ce6"
DSE_PID="0df2"
DEVICES=("$VID:$DS_PID" "$VID:$DSE_PID")

DW_LINK="https://fwupdater.dl.playstation.net/fwupdater/"
JSON=$(curl -s "$DW_LINK/info.json" | sed 's/[[:space:]]//g')
DS_LAST=$(echo "$JSON" | grep -o '"FwUpdate0004LatestVersion":"[^"]*' | sed 's/.*:"\([^"]*\)/\1/')
DS_EDGE_LAST=$(echo "$JSON" | grep -o '"FwUpdate0044LatestVersion":"[^"]*' | sed 's/.*:"\([^"]*\)/\1/')

check(){
	FW_SIZE=950272
	SIZE=$(stat -c%s "$1")
	if [ "$SIZE" -ne "$FW_SIZE" ]; then
		echo "Err: Downloaded file ($1) is $SIZE bytes, expected $FW_SIZE bytes."
		exit
	fi
}

dw_ds(){
	echo "Downloading DualSense firmware ($1) to FWUPDATE0004.bin..."
	curl -L -o FWUPDATE0004.bin "$DW_LINK/fwupdate0004/$1/FWUPDATE0004.bin"
	check FWUPDATE0004.bin
}

dw_ds_edge(){
	echo "Downloading DualSense Edge firmware ($1) to FWUPDATE0044.bin..."
	curl -L -o FWUPDATE0044.bin "$DW_LINK/fwupdate0044/$1/FWUPDATE0044.bin"
	check FWUPDATE0044.bin
}

prompt(){
	echo "Select a controller:"
	echo "1) DualSense"
	echo "2) DualSense Edge"

	read -rp "Enter 1 or 2: " choice

	case "$choice" in
		1) dw_ds "$DS_LAST" ;;
		2) dw_ds_edge "$DS_EDGE_LAST" ;;
		*) echo "Invalid choice." ;;
	esac
}

echo "DualSense & DualSense Edge firmware downloader"
echo
echo "Last versions:"
echo "DualSense:      $DS_LAST"
echo "DualSense Edge: $DS_EDGE_LAST"
echo

found_pid=""

for d in "${DEVICES[@]}"; do
	if lsusb | grep -i "$d" > /dev/null; then
		found_pid="${d#*:}"
		break
	fi
done

if [ -z "$found_pid" ]; then
	prompt
else
	if [ "$found_pid" = "$DS_PID" ]; then
		echo "Found DualSense controller"
		read -rp "This is correct? [Y/n]" c
		c=${c:-Y}
		case "$c" in
			y|Y) dw_ds $DS_LAST ;;
			*) prompt ;;
		esac
	elif [ "$found_pid" = "$DSE_PID" ]; then
		echo "Found DualSense Edge controller"
		read -rp "This is correct? [Y/n]" c
		c=${c:-Y}
		case "$c" in
			y|Y) dw_ds_edge $DS_EDGE_LAST ;;
			*) prompt ;;
		esac
	fi
fi