PHP WowzaSecureToken Class for Wowza Streaming Engine 4.5

WowzaSecureToken.php

<?php

class WowzaSecureToken {

	protected $prefix = '';

	protected $secret = '';

	protected $client = '';

	protected $host = 'localhost';

	protected $port = '';

	protected $stream = '';

	protected $application = '';

	protected $params = [];

	public function __construct(string $prefix, string $secret) {
		$this->prefix = $prefix;
		$this->secret = $secret;
	}

	public function setClientIp(string $client) {
		$this->client = $client;
	}

	public function setHost(string $host) {
		$this->host = $host;
	}

	public function setPort(string $post) {
		$this->post = $post;
	}

	public function setStreamName(string $stream) {
		$this->stream = $stream;
	}

	public function setApplicationName(string $application) {
		$this->application = $application;
	}

	public function setParams(array $params) {
		$this->params = $params;
	}

	public function getParams(): array {
		return $this->params;
	}

	public function getStringForHash(): string {
		$params = [];

		if($this->client) {
			$params[] = $this->client;
		}

		$params[] = $this->secret;

		foreach($this->getParams() as $key => $value) {
			$params[] = $this->prefix . $key . '=' . $value;
		}

		sort($params, SORT_STRING);

		return $this->application . '/' . $this->stream . '?' . implode('&', $params);
	}

	public function getHash(): string {
		return hash('sha256', $this->getStringForHash(), true);
	}

	public function getQueryString(): string {
		$params = $this->getParams();

		$hash = $this->getHash();
		$encodedHash = base64_encode($hash);
		$urlSafeHash = str_replace(['+', '/'], ['-', '_'], $encodedHash);

		$params['hash'] = $urlSafeHash;

		$prefixParams = [];

		foreach($params as $key => $value) {
			$prefixParams[$this->prefix.$key] = $value;
		}

		$queryParts = [];

		foreach($prefixParams as $key => $value) {
			$queryParts[] = sprintf('%s=%s', $key, $value);
		}

		return implode('&', $queryParts);
	}

	public function getHttpUrl(): string {
		return sprintf('http://%s/%s/%s/playlist.m3u8?%s',
			$this->host . ($this->port ? ':' . $this->port : ''),
			$this->application,
			$this->stream,
			$this->getQueryString()
		);
	}

	public function getHttpsUrl(): string {
		return sprintf('https://%s/%s/%s/playlist.m3u8?%s',
			$this->host . ($this->port ? ':' . $this->port : ''),
			$this->application,
			$this->stream,
			$this->getQueryString()
		);
	}

	public function getHttpDvrUrl(): string {
		return sprintf('http://%s/%s/%s/playlist.m3u8?DVR&%s',
			$this->host . ($this->port ? ':' . $this->port : ''),
			$this->application,
			$this->stream,
			$this->getQueryString()
		);
	}

	public function getHttpsDvrUrl(): string {
		return sprintf('https://%s/%s/%s/playlist.m3u8?DVR&%s',
			$this->host . ($this->port ? ':' . $this->port : ''),
			$this->application,
			$this->stream,
			$this->getQueryString()
		);
	}

}