zend-mail-oauth2 (Zend Framework 1)

This package help project use zend-mail (zend Framework 1) work with oauth2 authentication (XOAUTH2)

PHP 5.3-8.x compatible

Tested on Gmail, Azure AD:

• Gmail - Authenticate an IMAP, POP or SMTP connection using OAuth
• Azure AD - Authenticate an IMAP, POP or SMTP connection using OAuth

Table of Contents

• Installation
• Usage
  • Code examples working with gmail (azure mail)
  • Retrieve mail over IMAP
  • Retrieve mail over POP3
  • Send mail over SMTP
  • How to get $oauth2AccessToken
• Setup autoload zend-mail-oauth2 for zend framework 1 skeleton project

Installation

composer require hungtrinh/zend-mail-oauth2

Usage

Code examples working with gmail (azure mail)

• Guide create google web app, azure web app (provide client_id, secret_id) for your webapp to obtain oauth2 access_token, refresh_token.
• Authenticate with oauth2 (xoauth2 protocol): email + access_token
• Retrieve 15 over IMAP
• Retrieve 15 over POP3
• Send email over SMTP

git checkout https://github.com/hungtrinh/zend-mail-oauth2.git
cd zend-mail-oauth2
composer install
cd sample
php -S 0:8080

Open browser with url http://localhost:8080.

Retrieve mail over IMAP

$email              = 'your_gmail@gmail.com';
$oauth2AccessToken  = 'oauth2_access_token of your_gmail@gmail.com';
$imapGmailHost      = 'imap.gmail.com';
$imap365Host        = 'outlook.office365.com'; //use this host if working with office365
$imapProtocol       = new Zend_Mail_Protocol_ImapOauth2($imapGmailHost, $port = '993', $ssl = true);

if (!$imapProtocol->login($email, $oauth2AccessToken)) {
     throw new \DomainException('Invalid email or oauth2 access token expired');
}
$index  = 0;
$max    = 10;
$mail   = new Zend_Mail_Storage_Imap($imapProtocol);
echo $mail->countMessages();
foreach($mail as $messageNum => $message) {
    echo $message->subject;
    if ($max === ++$index) {
        break;
    }
}

Retrieve mail over POP3

$email               = 'your_gmail@gmail.com';
$$oauth2AccessToken  = 'oauth2_access_token of your_gmail@gmail.com';
$popGmailHost        = 'pop.gmail.com';
$pop365Host          = 'outlook.office365.com'; //use this host if working with office365
$pop3Protocol        = new Zend_Mail_Protocol_Pop3Oauth2($popGmailHost, $port = '995', $ssl = true);

if (!$pop3Protocol->login($email, $oauth2AccessToken)) {
     throw new \DomainException('Invalid email or oauth2 access token expired');
}
$index  = 0;
$max    = 10;
$mail   = new Zend_Mail_Storage_Pop3($pop3Protocol);
echo $mail->countMessages();
foreach($mail as $messageNum => $message) {
    echo $message->subject;
    if ($max === ++$index) {
        break;
    }
}

Send mail over SMTP

$office365Host      = 'smtp.office365.com'; //use this host if working with office365
$gmailHost          = 'smtp.gmail.com';
$mailSender         = 'mail_sender@gmail.com';
$oauth2AccessToken  = 'access token of mail_sender@gmail.com';
$transport          = new Zend_Mail_Transport_Smtp($gmailHost, [
    'ssl'           => 'tls',
    'port'          => 587,
    'auth'          => 'oauth2', // Zend_Mail_Protocol_Smtp_Auth_Oauth2
    'email'         => $mailSender,
    'accessToken'   => $oauth2AccessToken,
]);

Zend_Mail::setDefaultTransport($transport);
Zend_Mail::setDefaultFrom($mailSender, 'sender fullname');
Zend_Mail::setDefaultReplyTo($mailSender,'sender fullname');

$mail = new Zend_Mail();
$date = date('Y-m-d H:i:s P');
$mail->addTo($mailTo)
    ->setSubject("Test xoauh2 - smtp $date")
    ->setBodyText("$date : smtp + xoauth2 send mail test");

$mail->send();

How to get $oauth2AccessToken

Your current web app need add functional to maintain access_token

• public uri handler oauth2 response from google / azure / other web app http://your_app_domainoauth2-callback.php (persist access_token, refresh_token, expire_time to db or other persist storage)
• access_token have short lifetime (1h) so you can (optional)
  • setting cron-job run every 50 minute use refresh_token to get new access_token, after that persist access_token, refresh_token, expire_time to db. other process will use access_token to send or retrieve email
  • Or in process send/retrieve email use expire_time to verify if access_token is expired then use refresh_token to get new access_token

Full guide please see section Code examples working with gmail (azure mail)

Setup autoload zend-mail-oauth2 for zend framework 1 skeleton project

Add line require_once __DIR__ . '/../vendor/autoload.php'; after init Zend_Application like that, public/index.php file content

<?php

// Define path to application directory
defined('APPLICATION_PATH')
    || define('APPLICATION_PATH', realpath(dirname(__FILE__) . '/../application'));

// Define application environment
defined('APPLICATION_ENV')
    || define('APPLICATION_ENV', (getenv('APPLICATION_ENV') ? getenv('APPLICATION_ENV') : 'production'));

// Ensure library/ is on include_path
set_include_path(implode(PATH_SEPARATOR, array(
    realpath(APPLICATION_PATH . '/../library'),
    get_include_path(),
)));

/** Zend_Application */
require_once 'Zend/Application.php';

// Create application, bootstrap, and run
$application = new Zend_Application(
    APPLICATION_ENV,
    APPLICATION_PATH . '/configs/application.ini'
);

require_once __DIR__ . '/../vendor/autoload.php';

$application->bootstrap();
$application->run();