102 lines
		
	
	
		
			2.3 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
			
		
		
	
	
			102 lines
		
	
	
		
			2.3 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
<?php
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namespace W3TC;
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class Cdnfsd_LimeLight_Api {
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	private $url_base;
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	public function __construct( $short_name, $username, $api_key ) {
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		$this->url_base = 'https://purge.llnw.com/purge/v1/account/' .
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			$short_name . '/requests';
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		$this->username = $username;
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		$this->api_key = $api_key;
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	}
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	public function purge( $items ) {
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		$body = json_encode( array( 'patterns' => $items ) );
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		return $this->_wp_remote_post( '', $body );
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	}
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	public function get( $uri ) {
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		return $this->_wp_remote_get( $uri );
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	}
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	private function _wp_remote_get( $uri, $body = '', $headers = array() ) {
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		$url = $this->url_base . $uri;
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		$headers = $this->_add_headers( $headers, $url, 'GET', $body );
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		$result = wp_remote_get( $url, array(
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				'headers' => $headers,
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				'body' => $body
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			) );
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		return $this->_decode_response( $result );
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	}
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	private function _wp_remote_post( $uri, $body, $headers = array() ) {
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		$url = $this->url_base . $uri;
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		$headers = $this->_add_headers( $headers, $url, 'POST', $body );
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		$result = wp_remote_post( $url, array(
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				'headers' => $headers,
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				'body' => $body
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			) );
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		return $this->_decode_response( $result );
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	}
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	private function _add_headers( $headers, $url, $method, $body ) {
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		$timestamp = '' . ( time() * 1000 );
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		$headers['Content-Type'] = 'application/json';
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		$headers['X-LLNW-Security-Principal'] = $this->username;
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		$headers['X-LLNW-Security-Timestamp'] = $timestamp;
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		$headers['X-LLNW-Security-Token'] = hash_hmac( 'sha256',
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			$method . $url . $timestamp . $body, pack( 'H*', $this->api_key ) );
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		return $headers;
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	}
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	private function _decode_response( $result ) {
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		if ( is_wp_error( $result ) )
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			throw new \Exception( 'Failed to reach API endpoint' );
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		$response_json = @json_decode( $result['body'], true );
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		if ( is_null( $response_json ) ) {
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			throw new \Exception(
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				'Failed to reach API endpoint, got unexpected response ' .
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				$result['body'] );
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		}
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		if ( $result['response']['code'] != '200' &&
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			$result['response']['code'] != '201' &&
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			$result['response']['code'] != '202' &&
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			$result['response']['code'] != '204' ) {
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			if ( isset( $response_json['errors'] ) &&
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				isset( $response_json['errors'][0]['description'] ) ) {
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				throw new \Exception( $response_json['errors'][0]['description'] );
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			}
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			throw new \Exception( $result['body'] );
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		}
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		return $response_json;
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	}
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}
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