Security Sign-in Mail using Firebase - firebase

Question

How do I send a Security Sign-in mail to the users using firebase?
For example, your account was accessed at 3:21 pm, 16th Dec 2021.
Platform : Mac OS X, Chrome 96.0.4664
IP address: xxxxxxxxxxx
Location: xyz.
Thanks in advance.

Answer 1

Firebase doesn't have any feature built in for sending such sign-in alerts. It doesn't even have a way to build it on top of its existing providers, as there no server-side event when a user signs in.
The only option I can think of to implement this within Firebase is to implement your own custom sign-in provider, and then send a message from there.
It also sounds like an interesting feature, so I recommend you file a feature request for it.

Answer 2

I have come up with an implementation.
I don't know if it is wise to execute this client-side (Can also be done using Cloud Functions).
authResult = await auth.signInWithEmailAndPassword(
email: email,
password: password,
);
final Map<String, dynamic> device = await getDeviceInfo();
final Map<String, dynamic> net = await getNetworkInfo();
final DateTime time = DateTime.now();
//I am using Trigger Email Extension here.
await mail.doc().set({
'to': email.toLowerCase(),
'message': {
'subject': 'Succesful Login',
'text':
"Welcome back! You have successfully logged in to XYZ. You can now start using the app. Email = $email Platform: ${device["name"]} Time: $time IP Address: ${net["wifiIP"]}",
},
});
These are the functions mentioned above:
import 'dart:io';
import 'package:device_info_plus/device_info_plus.dart';
import 'package:network_info_plus/network_info_plus.dart';
Future<Map<String, dynamic>> getDeviceInfo() async {
DeviceInfoPlugin deviceInfo = DeviceInfoPlugin();
if (Platform.isIOS) {
IosDeviceInfo iosInfo = await deviceInfo.iosInfo;
return iosInfo.toMap();
} else if (Platform.isAndroid) {
AndroidDeviceInfo androidInfo = await deviceInfo.androidInfo;
return androidInfo.toMap();
} else {
WebBrowserInfo webBrowserInfo = await deviceInfo.webBrowserInfo;
return webBrowserInfo.toMap();
}
}
Future<Map<String, dynamic>> getNetworkInfo() async {
final info = NetworkInfo();
var wifiName = await info.getWifiName(); // FooNetwork
var wifiBSSID = await info.getWifiBSSID(); // 11:22:33:44:55:66
var wifiIP = await info.getWifiIP(); // 192.168.1.43
var wifiIPv6 =
await info.getWifiIPv6(); // 2001:0db8:85a3:0000:0000:8a2e:0370:7334
var wifiSubmask = await info.getWifiSubmask(); // 255.255.255.0
var wifiBroadcast = await info.getWifiBroadcast(); // 192.168.1.255
var wifiGateway = await info.getWifiGatewayIP(); // 192.168.1.1
return {
'wifiName': wifiName,
'wifiBSSID': wifiBSSID,
'wifiIP': wifiIP,
'wifiIPv6': wifiIPv6,
'wifiSubmask': wifiSubmask,
'wifiBroadcast': wifiBroadcast,
'wifiGateway': wifiGateway,
};
}
Trigger Email