Perl

Firebase JWT User Authentication

See more Firebase Examples

Demonstrates how to authenticate a Firebase REST API call using a JSON service account private key. Chilkat2 Perl

use strict;
use warnings;
use Chilkat2;

# This example requires the Chilkat API to have been previously unlocked.
# See Global Unlock Sample for sample code.

# First load the Firebase JSON private key into a string.
my $fac = Chilkat2::FileAccess->new;
my $jsonKey = $fac->ReadEntireTextFile('qa_data/firebase/fish-8abda-firebase-adminsdk-1ys3o-347d70d581.json', 'utf-8');
if (!$fac->LastMethodSuccess) {
    print $fac->LastErrorText, "\n";
    exit;
}

# A JSON private key looks like this:

# {
#   "type": "service_account",
#   "project_id": "fish-8abda",
#   "private_key_id": "347e70d5810b92516905d2de12d292c16159375b",
#   "private_key": "-----BEGIN PRIVATE KEY-----\nMIIEvwIBADANBgkqhkiG9 ...  KQRtMB1gBu3KQxgoA==\n-----END PRIVATE KEY-----\n",
#   "client_email": "firebase-adminsdk-1ys3o@fish-8abda.iam.gserviceaccount.com",
#   "client_id": "107827947504591332107",
#   "auth_uri": "https://accounts.google.com/o/oauth2/auth",
#   "token_uri": "https://accounts.google.com/o/oauth2/token",
#   "auth_provider_x509_cert_url": "https://www.googleapis.com/oauth2/v1/certs",
#   "client_x509_cert_url": "https://www.googleapis.com/robot/v1/metadata/x509/firebase-adminsdk-1ys3o%40fish-8abda.iam.gserviceaccount.com"
# }

my $gAuth = Chilkat2::AuthGoogle->new;
$gAuth->JsonKey($jsonKey);

# Choose a scope.
# The scope could be "https://www.googleapis.com/auth/firebase.database"
# or
# "https://www.googleapis.com/auth/firebase.database https://www.googleapis.com/auth/userinfo.email"

$gAuth->Scope('https://www.googleapis.com/auth/firebase.database https://www.googleapis.com/auth/userinfo.email');

# Request an access token that is valid for this many seconds.
$gAuth->ExpireNumSeconds(3600);

# If the application is requesting delegated access:
# The email address of the user for which the application is requesting delegated access,
# then set the email address here. (Otherwise leave it empty.)
$gAuth->SubEmailAddress('');

# Connect to www.googleapis.com using TLS (TLS 1.2 is the default.)
# The Chilkat socket object is used so that the connection can be established
# through proxies or an SSH tunnel if desired.
my $tlsSock = Chilkat2::Socket->new;
my $success = $tlsSock->Connect('www.googleapis.com', 443, 1, 5000);
if (!$success) {
    print $tlsSock->LastErrorText, "\n";
    exit;
}

# Send the request to obtain the access token.
$success = $gAuth->ObtainAccessToken($tlsSock);
if (!$success) {
    print $gAuth->LastErrorText, "\n";
    exit;
}

# Examine the access token:
print 'Firebase Access Token: ', $gAuth->AccessToken, "\n";

# Save the token to a file (or wherever desired).  This token is valid for 1 hour.
$fac->WriteEntireTextFile('qa_data/tokens/firebaseToken.txt', $gAuth->AccessToken, 'utf-8', 0);