Add SendGrid API support

config/application.php

@@ -67,6 +67,8 @@
 	'MailerSMTPHosts'			=> null,					// When MailerUseSMTP is true: A string host or array of hosts (e.g., 'host1' or array('host1', 'backuphost')).
 	'MailerSMTPUsername'		=> null,					// When MailerUseSMTP is true: Authorized username for SMTP server.
 	'MailerSMTPPassword'		=> null,					// When MailerUseSMTP is true: Authorized password for SMTP server (for above user).
+	'SendGridAPIKey'			=> null,					// SendGrid API Key for sending mail. (https://sendgrid.com/docs/Classroom/Send/How_Emails_Are_Sent/api_keys.html)
+															// If this API Key is set, it will be used instead of the SMTP settings.
 	'ServerStatusCache'			=> 2,						// Store a cached server status and refresh every X minutes.  Default: 2 minutes (value is measured in minutes).
 	'ServerStatusTimeout'		=> 2,						// For each server, spend X amount of seconds to determine whether it's up or not.
 	'SessionKey'				=> 'fluxSessionData',		// Shouldn't be changed, just specifies the session key to be used for session data.

lib/Flux/MailerSendGrid.php

@@ -0,0 +1,72 @@
+<?php
+
+require 'sendgrid/sendgrid-php.php';
+
+require_once 'Flux/LogFile.php';
+
+class Flux_Mailer_SendGrid {
+	protected $pm;
+	public static $errLog;
+	protected static $log;
+
+	public function __construct()
+	{
+		if (!self::$errLog) {
+			self::$errLog = new Flux_LogFile(FLUX_DATA_DIR.'/logs/errors/mail/'.date('Ymd').'.log');
+		}
+		if (!self::$log) {
+			self::$log = new Flux_LogFile(FLUX_DATA_DIR.'/logs/mail/'.date('Ymd').'.log');
+		}
+
+		$this->pm     = $pm = new \SendGrid\Mail\Mail();
+		$this->errLog = self::$errLog;
+		$this->log    = self::$log;
+
+	}
+
+	public function send($recipient, $subject, $template, array $templateVars = array())
+	{
+		if (array_key_exists('_ignoreTemplate', $templateVars) && $templateVars['_ignoreTemplate']) {
+			$content = $template;
+		} else {
+			$templatePath = FLUX_DATA_DIR."/templates/$template.php";
+			if (!file_exists($templatePath)) {
+				return false;
+			}
+
+			$find = array();
+			$repl = array();
+
+			foreach ($templateVars as $key => $value) {
+				$find[] = '{'.$key.'}';
+				$repl[] = $value;
+			}
+
+			ob_start();
+			include $templatePath;
+			$content = ob_get_clean();
+
+			if (!empty($find) && !empty($repl)) {
+				$content = str_replace($find, $repl, $content);
+			}
+		}
+		$this->pm->setFrom(Flux::config('MailerFromAddress'), Flux::config('MailerFromName'));
+		$this->pm->AddTo($recipient, $recipient);
+		$this->pm->SetSubject($subject);
+		$this->pm->AddContent("text/html", $content);
+
+		$sendgrid = new \SendGrid(Flux::config('SendGridAPIKey'));
+
+		try {
+			$response = $sendgrid->send($this->pm);
+			self::$log->puts("sent e-mail -- Recipient: $recipient, Subject: $subject");
+			return $response->statusCode() . "\n";
+			//print_r($response->headers());
+			//print $response->body() . "\n";
+		} catch (Exception $e) {
+			self::$errLog->puts("{$this->pm->ErrorInfo} (while attempting -- Recipient: $recipient, Subject: $subject)");
+			return 'Caught exception: '. $e->getMessage() ."\n";
+		}
+	}
+}
+?>

lib/Flux/PaymentNotifyRequest.php

@@ -323,15 +323,20 @@ public function process()
 			$this->logPayPal('Transaction invalid, aborting.');
 
 			if(!in_array($received_from, $allowed_hosts) && Flux::config('PaypalHackNotify')){
-				require_once 'Flux/Mailer.php';
+				if(Flux::config('SendGridAPIKey')){
+					require_once 'Flux/MailerSendGrid.php';
+					$mail = new Flux_Mailer_SendGrid();
+				} else {
+					require_once 'Flux/Mailer.php';
+					$mail = new Flux_Mailer();
+				}
 
 				$customArray  = @unserialize(base64_decode((string)$this->ipnVariables->get('custom')));
 				$customArray  = $customArray && is_array($customArray) ? $customArray : array();
 				$customData   = new Flux_Config($customArray);
 				$accountID    = $customData->get('account_id');
 				$serverName   = $customData->get('server_name');
 
-				$mail = new Flux_Mailer();
 
 				$tmpl = "<p>Paypal hack detected!</p>";
 				$tmpl .= "<p>Account: ".$accountID."</p>";

lib/sendgrid-php/.editorconfig

@@ -0,0 +1,8 @@
+root = true
+
+[*.php]
+indent_style = space
+indent_size = 4
+end_of_line = lf
+insert_final_newline = true
+trim_trailing_whitespace = true

lib/sendgrid-php/.env.sample

@@ -0,0 +1 @@
+export SENDGRID_API_KEY=''

lib/sendgrid-php/CODE_OF_CONDUCT.md

@@ -0,0 +1,73 @@
+# Contributor Covenant Code of Conduct
+
+## Our Pledge
+
+In the interest of fostering an open and welcoming environment, we as
+contributors and maintainers pledge to making participation in our project and
+our community a harassment-free experience for everyone, regardless of age, body
+size, disability, ethnicity, sex characteristics, gender identity and expression,
+level of experience, education, socio-economic status, nationality, personal
+appearance, race, religion, or sexual identity and orientation.
+
+## Our Standards
+
+Examples of behavior that contributes to creating a positive environment
+include:
+
+- Using welcoming and inclusive language
+- Being respectful of differing viewpoints and experiences
+- Gracefully accepting constructive criticism
+- Focusing on what is best for the community
+- Showing empathy towards other community members
+
+Examples of unacceptable behavior by participants include:
+
+- The use of sexualized language or imagery and unwelcome sexual attention or
+  advances
+- Trolling, insulting/derogatory comments, and personal or political attacks
+- Public or private harassment
+- Publishing others' private information, such as a physical or electronic
+  address, without explicit permission
+- Other conduct which could reasonably be considered inappropriate in a
+  professional setting
+
+## Our Responsibilities
+
+Project maintainers are responsible for clarifying the standards of acceptable
+behavior and are expected to take appropriate and fair corrective action in
+response to any instances of unacceptable behavior.
+
+Project maintainers have the right and responsibility to remove, edit, or
+reject comments, commits, code, wiki edits, issues, and other contributions
+that are not aligned to this Code of Conduct, or to ban temporarily or
+permanently any contributor for other behaviors that they deem inappropriate,
+threatening, offensive, or harmful.
+
+## Scope
+
+This Code of Conduct applies both within project spaces and in public spaces
+when an individual is representing the project or its community. Examples of
+representing a project or community include using an official project e-mail
+address, posting via an official social media account, or acting as an appointed
+representative at an online or offline event. Representation of a project may be
+further defined and clarified by project maintainers.
+
+## Enforcement
+
+Instances of abusive, harassing, or otherwise unacceptable behavior may be
+reported by contacting the project team at [email protected]. All
+complaints will be reviewed and investigated and will result in a response that
+is deemed necessary and appropriate to the circumstances. The project team is
+obligated to maintain confidentiality with regard to the reporter of an incident.
+Further details of specific enforcement policies may be posted separately.
+
+Project maintainers who do not follow or enforce the Code of Conduct in good
+faith may face temporary or permanent repercussions as determined by other
+members of the project's leadership.
+
+## Attribution
+
+This Code of Conduct is adapted from the [Contributor Covenant][homepage], version 1.4,
+available at https://www.contributor-covenant.org/version/1/4/code-of-conduct.html
+
+[homepage]: https://www.contributor-covenant.org

lib/sendgrid-php/CONTRIBUTING.md

@@ -0,0 +1,160 @@
+Hello! Thank you for choosing to help contribute to one of the Twilio SendGrid open source libraries. There are many ways you can contribute and help is always welcome. We simply ask that you follow the following contribution policies.
+
+All third party contributors acknowledge that any contributions they provide will be made under the same open source license that the open source project is provided under.
+
+- [Improvements to the Codebase](#improvements-to-the-codebase)
+  - [Development Environment](#development-environment)
+    - [Install and Run Locally](#install-and-run-locally)
+      - [Prerequisites](#prerequisites)
+      - [Initial setup:](#initial-setup)
+  - [Environment Variables](#environment-variables)
+      - [Execute:](#execute)
+- [Understanding the Code Base](#understanding-the-codebase)
+- [Testing](#testing)
+- [Style Guidelines & Naming Conventions](#style-guidelines--naming-conventions)
+- [Creating a Pull Request](#creating-a-pull-request)
+- [Code Reviews](#code-reviews)
+
+There are a few ways to contribute, which we'll enumerate below:
+
+## Improvements to the Codebase
+
+We welcome direct contributions to the sendgrid-php code base. Thank you!
+
+Please note that we utilize the [Gitflow Workflow](https://www.atlassian.com/git/tutorials/comparing-workflows/gitflow-workflow) for Git to help keep project development organized and consistent.
+
+### Development Environment ###
+
+#### Install and Run Locally ####
+
+##### Prerequisites #####
+
+- PHP version 7.3, 7.4, 8.0, or 8.1
+
+##### Initial setup: #####
+
+```bash
+git clone https://github.com/sendgrid/sendgrid-php.git
+cd sendgrid-php
+composer install
+```
+
+### Environment Variables
+
+First, get your free Twilio SendGrid account [here](https://sendgrid.com/free?source=sendgrid-php).
+
+Next, update your environment with your [SENDGRID_API_KEY](https://app.sendgrid.com/settings/api_keys).
+
+```bash
+echo "export SENDGRID_API_KEY='YOUR_API_KEY'" > sendgrid.env
+echo "sendgrid.env" >> .gitignore
+source ./sendgrid.env
+```
+
+##### Execute: #####
+
+See the [examples folder](examples) or [README](README.md) to get started quickly.
+
+We prefer the use of the Composer autoloader by loading `vendor/autoload.php`.
+
+The examples will load `sendgrid-php.php` which is in the project root. This file verifies the existence of the Composer autoloader and warns you if dependencies are missing.
+
+## Understanding the Codebase
+
+**/examples**
+
+Working examples that demonstrate usage.
+
+```bash
+php examples/example.php
+```
+
+**/test/unit**
+
+Unit tests for the HTTP client.
+
+**/test/integration**
+
+Unit tests for the HTTP client.
+
+**/lib**
+
+The interface to the Twilio SendGrid API. The subfolders are helpers.
+
+## Testing
+
+All PRs require passing tests before the PR will be reviewed. All test files are in the [`/test/unit`](test/unit) directory. For the purposes of contributing to this repo, please update or add relevant test files [here](test) with tests as you modify the code.
+
+The integration tests require a Twilio SendGrid mock API in order to execute. We've simplified setting this up using Docker to run the tests. You will just need [Docker Desktop](https://docs.docker.com/get-docker/) and `make`.
+
+Once these are available, simply execute the Docker test target to run all tests: `make test-docker`. This command can also be used to open an interactive shell into the container where this library is installed. To start a *bash* shell for example, use this command: `command=bash make test-docker`.
+
+## Style Guidelines & Naming Conventions
+
+Generally, we follow the style guidelines as suggested by the official language. However, we ask that you conform to the styles that already exist in the library. If you wish to deviate, please explain your reasoning.
+
+- [PSR2 Coding Standards](http://www.php-fig.org/psr/psr-2/)
+
+Please run your code through:
+
+- [PHP Code Sniffer](https://github.com/squizlabs/PHP_CodeSniffer)
+
+## Creating a Pull Request
+
+1. [Fork](https://help.github.com/fork-a-repo/) the project, clone your fork,
+   and configure the remotes:
+
+   ```bash
+   # Clone your fork of the repo into the current directory
+   git clone https://github.com/sendgrid/sendgrid-php
+
+   # Navigate to the newly cloned directory
+   cd sendgrid-php
+
+   # Assign the original repo to a remote called "upstream"
+   git remote add upstream https://github.com/sendgrid/sendgrid-php
+   ```
+
+2. If you cloned a while ago, get the latest changes from upstream:
+
+   ```bash
+   git checkout <dev-branch>
+   git pull upstream <dev-branch>
+   ```
+
+3. Create a new topic branch off the `development` branch to
+   contain your feature, change, or fix:
+
+   ```bash
+   git checkout development
+   git checkout -b <topic-branch-name>
+   ```
+
+4. Commit your changes in logical chunks. Please adhere to these [git commit
+   message guidelines](http://tbaggery.com/2008/04/19/a-note-about-git-commit-messages.html)
+   or your code is unlikely to be merged into the main project. Use Git's
+   [interactive rebase](https://help.github.com/articles/interactive-rebase)
+   feature to tidy up your commits before making them public.
+
+4a. Create tests.
+
+4b. Create or update the example code that demonstrates the functionality of this change to the code.
+
+5. Locally merge (or rebase) the upstream `development` branch into your topic branch:
+
+   ```bash
+   git pull [--rebase] upstream development
+   ```
+
+6. Push your topic branch up to your fork:
+
+   ```bash
+   git push origin <topic-branch-name>
+   ```
+
+7. [Open a Pull Request](https://help.github.com/articles/using-pull-requests/)
+    with a clear title and description against the `development` branch. All tests must be passing before we will review the PR.
+
+## Code Reviews
+
+If you can, please look at open PRs and review them. Give feedback and help us merge these PRs much faster! If you don't know how, GitHub has some [great information on how to review a Pull Request](https://help.github.com/articles/about-pull-request-reviews/).

lib/sendgrid-php/Dockerfile

@@ -0,0 +1,16 @@
+ARG version=latest
+FROM php:$version
+
+RUN apt-get update \
+    && apt-get install -y zip
+
+RUN curl -s https://getcomposer.org/installer | php \
+    && mv composer.phar /usr/local/bin/composer
+
+COPY prism/prism/nginx/cert.crt /usr/local/share/ca-certificates/cert.crt
+RUN update-ca-certificates
+
+WORKDIR /app
+COPY . .
+
+RUN make install