├── README.md
├── composer.json
└── src
    ├── Vote.php
    └── Server.php


/README.md:
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 1 | # votifier2-php
 2 | 
 3 | Votifier protocol v2 client for PHP.
 4 | 
 5 | ## Example
 6 | 
 7 | ```php
 8 |     $vote = new \Imaginarycode\Votifier2\Vote("tuxed", "127.0.0.1", "Test", NULL);
 9 |     $service = new \Imaginarycode\Votifier2\Server("127.0.0.1", 8192, "TOKEN");
10 |     $service->sendVote($vote);
11 | ```


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/composer.json:
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 1 | {
 2 |     "name": "nuvotifier/votifier2-php",
 3 |     "description": "A Votifier protocol 2 implementation for PHP",
 4 |     "license": "MIT",
 5 |     "authors": [
 6 |         {
 7 |             "name": "Tux",
 8 |             "email": "write@imaginarycode.com"
 9 |         }
10 |     ],
11 |     "require": {},
12 |     "autoload": {
13 |       "psr-4": {
14 |         "Imaginarycode\\Votifier2\\": "src/"
15 |       }
16 |     }
17 | }
18 | 


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/src/Vote.php:
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 1 | <?php
 2 | 
 3 | namespace Imaginarycode\Votifier2;
 4 | 
 5 | /**
 6 |  * This class provides an implementation of a vote.
 7 |  * @package Imaginarycode\Votifier2
 8 |  */
 9 | class Vote
10 | {
11 |     public $serviceName;
12 |     public $username;
13 |     public $address;
14 |     public $timestamp;
15 | 
16 |     public function __construct($serviceName, $username, $address, $timestamp)
17 |     {
18 |         $this->serviceName = $serviceName;
19 |         $this->username = $username;
20 |         $this->address = $address;
21 |         // We lose some precision if we have to make this up, but that's okay.
22 |         $this->timestamp = $timestamp ?: (int) (time() * 1000);
23 |     }
24 | }


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/src/Server.php:
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 1 | <?php
 2 | 
 3 | namespace Imaginarycode\Votifier2;
 4 | 
 5 | class Server
 6 | {
 7 |     private $host;
 8 |     private $port;
 9 |     private $token;
10 | 
11 |     /**
12 |      * Server constructor.
13 |      * @param $host
14 |      * @param $port
15 |      * @param $token
16 |      */
17 |     public function __construct($host, $port, $token)
18 |     {
19 |         $this->host = $host;
20 |         $this->port = $port;
21 |         $this->token = $token;
22 |     }
23 | 
24 |     /**
25 |      * Sends a vote.
26 |      * @param Vote $vote
27 |      * @throws \ErrorException
28 |      */
29 |     public function sendVote(Vote $vote)
30 |     {
31 |         if (!$vote)
32 |         {
33 |             throw new \InvalidArgumentException('vote not provided');
34 |         }
35 | 
36 |         $stream = stream_socket_client('tcp://' . $this->host . ':' . $this->port, $errno, $errstr, 3);
37 |         if (!$stream)
38 |         {
39 |             throw new \Exception('Could not connect: ' . $errstr);
40 |         }
41 | 
42 |         try {
43 |             stream_set_timeout($stream, 3);
44 |             $header = fread($stream, 64);
45 |             if ($header === FALSE) {
46 |                 throw new \Exception("Couldn't read header from remote host");
47 |             }
48 |             $header_parts = explode(' ', $header);
49 | 
50 |             if (count($header_parts) != 3) {
51 |                 throw new \Exception('Not a Votifier v2 server');
52 |             }
53 | 
54 |             $challenge = substr($header_parts[2], 0, -1);
55 | 
56 |             $payload_json = json_encode(array(
57 |                 "username" => $vote->username,
58 |                 "serviceName" => $vote->serviceName,
59 |                 "timestamp" => $vote->timestamp,
60 |                 "address" => $vote->address,
61 |                 "challenge" => $challenge
62 |             ));
63 |             $signature = base64_encode(hash_hmac('sha256', $payload_json, $this->token, true));
64 |             $message_json = json_encode(array("signature" => $signature, "payload" => $payload_json));
65 | 
66 |             $payload = pack('nn', 0x733a, strlen($message_json)) . $message_json;
67 |             if (fwrite($stream, $payload) === FALSE) {
68 |                 throw new \Exception("Couldn't write to remote host");
69 |             }
70 | 
71 |             $response = fread($stream, 256);
72 | 
73 |             if (!$response) {
74 |                 throw new \Exception('Unable to read server response');
75 |             }
76 | 
77 |             $result = json_decode($response);
78 |             if ($result->status !== "ok") {
79 |                 throw new \Exception('Votifier server error: ' . $result->cause . ': ' . $result->error);
80 |             }
81 |         } finally {
82 |             fclose($stream);
83 |         }
84 |     }
85 | }


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