#!/bin/sh
# Use xmlstarlet and ADB to pull WifiConfigStore.xml from a (rooted) Android
# phone and import wifi network passwords into pass. Tested with a rooted pixel
# 4a (sunfish) running LineageOS 21 (Android 14)

TAB="$(printf '\t')"

get_wifi_cfg() {
	adb shell cat /data/misc/apexdata/com.android.wifi/WifiConfigStore.xml
	if [ $? -ne 0 ] ; then
		echo "note: try running \`adb root\` first"
		exit 1
	fi
}

parse_filter() {
	xmlstarlet select --template \
		--match '/WifiConfigStoreData/NetworkList/Network' \
		--if './WifiConfiguration/string[@name="PreSharedKey"]' \
		--value-of './WifiConfiguration/string[@name="SSID"]' \
		--output "$TAB" \
		--value-of './WifiConfiguration/string[@name="PreSharedKey"]' \
		--nl
}

cut_quotes() {
	cut -c2- | rev | cut -c2- | rev
}

import_pass() {
	while read line; do
		SSID="$(echo "$line" | cut -d"$TAB" -f1 | cut_quotes | tr '/' '-')"
		PASSWD="$(echo "$line" | cut -d"$TAB" -f2 | cut_quotes)"
		PASS_NAME="net/$SSID/passwd"

		printf 'insert SSID "%s" as %s ...' "$SSID" "$PASS_NAME"
		echo "$PASSWD" | pass insert --multiline "$PASS_NAME" 1>/dev/null 2>/dev/null
		printf ' %s\n' "$([ $? -eq 0 ] && echo "OK" || echo "ERROR")"
	done
}

get_wifi_cfg | parse_filter | import_pass