SgParserBundle

Parses and validates SendGrid email/attachments sent to the WebHook ( Symfony 5 )

Requirements

• PHP 7.1.3 or higher;
• Symfony 5.*.

Installation

composer require frankspress/sg-parser-bundle

Usage

Create a new route and set the prefix to configure your new Webhook point.

# app/routes/sg_api_parser.yml

sg_api_parsers:
    resource: '@FrankspressSgParserBundle/Resources/config/routes.xml'
    prefix: '/api/sendgrid/inbound'
    trailing_slash_on_root: false

Create a new EventSubscriber. This will automatically be called when a new email is sent to your Api point.

namespace App\EventSubscriber;

use Frankspress\SgParserBundle\Attachment\NewAttachment;
use Frankspress\SgParserBundle\Event\ParserApiCompleteEvent;
use Frankspress\SgParserBundle\Event\SgParserEvents;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;

class SgParseEmail implements EventSubscriberInterface
{
    
    public static function getSubscribedEvents()
    {
        return [
                    SgParserEvents::PARSER_API => 'onParserApiComplete'
               ];
    }

    public function onParserApiComplete(ParserApiCompleteEvent $event )
    {
        $email = $event->getNewEmail();
        $attachments = $event->getNewAttachment();

        // SAVE YOUR EMAIL/ATTACHMENTS

    }
}

Default Config

To modify any of the default parameters create a config file and change any of the following. For instance, if you want the bundle to allow only specific mime types then you can list them in mime_types.

# app/config/sg_parser.yml

frankspress_sg_parser:

  email:

    max_body_length: 6000
    
    # Returns the email body or response body without the reply history and tags.
    raw_response: false
    
    # Returns the subject without RE:, FWD: etc
    raw_subject: false

  attachment:
    # Enables or disables attachment.
    handle_attachment: true
    
    # Searches for php injection in every attachment.
    php_injection: false

    file_upload_size: '6M'

    # Lists the mime types allowed. If empty or commented out "all" mime types will be allowed.
    # mime_types: [  'image/*',
    #                'application/pdf',
    #                'application/msword',
    #                'text/plain'
    # ]

Basic Example

  // ...
  public function onParserApiComplete(ParserApiCompleteEvent $event )
  {
    $email = $event->getNewEmail();
    $attachments = $event->getNewAttachment();

   /* 
    $email->getAttachment();
    $email->getSubject();
    $email->getSenderEmail();
    $email->getSenderName();
    $email->getBody(); 
    */
    if ( !empty($email->getAttachment() ) ) {

      foreach ($attachments as $attachment ) {
        /*
        $attachment->getFile();
        $attachment->getFileName();
        $attachment->getOriginalFileName();
        $attachment->error();
        $attachment->getFilePath();
        $attachment->getSize();
        $attachment->getType();
        */
      }
    }

  }

Methods are pretty much self explanatory. $email->getAttachments() returns an array with the attachment titles not the actual attachments.

$attachments comes as an array of attachments. From the example above you can see that for each attachment you can load its actual file with $attachment->getFile() or get it's filename with $attachment->getFileName(). One important note about $attachment->error(), if this is empty the file has passed validation, if it's not empty then only the first encountered error will be recorded.