0

For testing purposes I've set up a mailtrap (dummy SMTP server) to catch all mail in and out of my local site. To do so, I hooked its configuration in the theme's functions.php like this:

function mailtrap($phpmailer) {
    $phpmailer->isSMTP();
    $phpmailer->Host = 'smtp.mailtrap.io';
    $phpmailer->SMTPAuth = true;
    $phpmailer->Port = 2525;
    $phpmailer->Username = '**************';
    $phpmailer->Password = '**************';
}
add_action('phpmailer_init', 'mailtrap');

The hook worked like a charm so far, and still does for all front-facing functionalities.

Problem is, I now had to expose some REST API endpoints to serve an associated mobile app, some of which will send emails. The messages are sent with the usual

wp_mail( $to_email, $subject, $message, $headers);

To my surprise, I noticed those emails not getting catched by mailtrap and ended up spamming a mailbox I wasn't supposed to write to.

So I wonder, does the REST API structure ignore functions.php? Is there a way I can hook mailtrap so that it will work on API calls aswell?

Thanks in advance for any advice and have a nice day!

EDIT:

As suggested, I will detail all files and calls involved for more clarity.

In functions.php I have both the mailer hook and the include for the script containing the endpoint definitions:

<?php

require('functions/rest-api-utils.php');

(...)

function mailtrap($phpmailer) {
   $phpmailer->isSMTP();
    $phpmailer->Host = 'smtp.mailtrap.io';
    $phpmailer->SMTPAuth = true;
    $phpmailer->Port = 2525;
    $phpmailer->Username = '316fb924a7c634';
    $phpmailer->Password = 'e96e24567d9a75';
}
add_action('phpmailer_init', 'mailtrap');

In rest-api-utils.php I have the endpoint definition and callbacks:

<?php
add_action( 'rest_api_init', function () {
    $api_namespace = "mobileapi";
    $api_version = "1";
    register_rest_route( "$api_namespace/v$api_version", '/requestassistance/', array(
    'methods' => 'POST',
    'callback' => 'mobileapi_requestassistance',
    'args' => array(
      'serial' => array(
            'required' => TRUE,
            'type' => 'string',
      ),
      'request' => array(
            'required' => TRUE,
            'type' => 'string',
      ),
      'point' => array(
            'required' => TRUE,
            'type' => 'string',
      ),
    ),
    'permission_callback' => function () {
        return mobileapi_check_customer();
    }
));

function mobileapi_check_customer() {
    return (is_user_logged_in() && get_field('is_customer', wp_get_current_user()));
}

function mobileapi_requestassistance(WP_REST_Request $request) {
    $response = new WP_REST_Response();

    $error = custarea_validation(); // returns false
    if ($error) {
            return new WP_Error( 'mobileapi_requestassistance_error', 'Error.', array( 'status' => 403 ) );
    }

    // Send request mail
    mobileapi_notify_point();

    $response->set_data("");
    $response->set_status(200);
    return $response;
}

function mobileapi_notify_point() {
    $user = wp_get_current_user();

    $subject = __('Assistance request', 'theme');
    $headers = array();

    add_filter( 'wp_mail_content_type', function( $content_type ) {return 'text/html';});

    (... addresses and body composition ...)

    wp_mail( $to_email, $subject, $message, $headers);

    // Reset content-type to avoid conflicts -- http://core.trac.wordpress.org/ticket/23578
    remove_filter( 'wp_mail_content_type', 'set_html_content_type' );
}
3
  • 1
    No, the REST API does not ignore functions.php. Are these REST API endpoints yours? Or a plugin's? If they're yours then what's the code you've used to register them? Mar 11, 2019 at 11:56
  • @JacobPeattie yes, the endpoint is mine, I included all the relevant files and calls. Thanks for the suggestion.
    – GigiSan
    Mar 11, 2019 at 13:18
  • @JacobPeattie I just realized it was silly to think it could be ignored since the endpoints are ultimately defined in functions.php, even if indirectly. :) But still, I don't know why the mailer would behave differently.
    – GigiSan
    Mar 11, 2019 at 13:24

1 Answer 1

0

I found the "issue".

I had another mailing provider (Postmark) installed as a plugin, which I brought in my local site by mistake. That prevailed over any other mailing configuration.

I deactivated the plugin and now my hook works fine.

2
  • 1
    If that's the answer, then you should mark this as the accepted answer (even if it's your own). That way people know there's an accepted answer when reviewing question queues.
    – butlerblog
    Apr 11, 2019 at 19:22
  • Thanks for reminding me, I was probably waiting for the 2 days self-answer time and forgot it. Have a nice day!
    – GigiSan
    Apr 12, 2019 at 7:59

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.