File lib/oauth2.php

1:	<?php
2:
3:	/**
4:	* Oauth2 manager
5:	* @package framework
6:	* @subpackage oauth2
7:	*/
8:
9:	/**
10:	* Class for dealing with Oauth2
11:	*/
12:	class Hm_Oauth2 {
13:
14:	private $client_id;
15:	private $client_secret;
16:	private $redirect_uri;
17:	private $api;
18:
19:	/**
20:	* Load default settings
21:	* @param string $id Oath2 client id
22:	* @param string $secret Oath2 client secret
23:	* @param string $uri URI to redirect to from the remote site
24:	*/
25:	public function __construct($id, $secret, $uri) {
26:	$this->client_id = $id;
27:	$this->client_secret = $secret;
28:	$this->redirect_uri = $uri;
29:	$this->api = new Hm_API_Curl();
30:	}
31:
32:	/**
33:	* Build a URL to request an authorization
34:	* @param string $url host to request authorization from
35:	* @param string $scope oauth2 scope
36:	* @param string $state current state of the oauth2 flow
37:	* @param string $login_hint optional username
38:	* @return string
39:	*/
40:	public function request_authorization_url($url, $scope, $state, $login_hint = false) {
41:	$res = sprintf('%s?response_type=code&scope=%s&state=%s&'.
42:	'approval_prompt=force&access_type=offline&client_id=%s&redirect_uri=%s',
43:	$url, $scope, $state, $this->client_id, $this->redirect_uri);
44:	if ($login_hint !== false) {
45:	$res .= '&login_hint='.$login_hint;
46:	}
47:	return $res;
48:	}
49:
50:	/**
51:	* Use curl to exchange an authorization code for a token
52:	* @param string $url url to post to
53:	* @param string $authorization_code oauth2 auth code
54:	* @param array $headers HTTP headers to add to the request
55:	* @return array
56:	*/
57:	public function request_token($url, $authorization_code, $headers = []) {
58:	return $this->api->command($url, $headers, array('code' => $authorization_code, 'client_id' => $this->client_id,
59:	'client_secret' => $this->client_secret, 'redirect_uri' => $this->redirect_uri, 'grant_type' => 'authorization_code'));
60:	}
61:
62:	/**
63:	* Use curl to refresh an access token
64:	* @param string $url url to to post to
65:	* @param string $refresh_token oauth2 refresh token
66:	* @return array
67:	*/
68:	public function refresh_token($url, $refresh_token) {
69:	return $this->api->command($url, [], array('client_id' => $this->client_id, 'client_secret' => $this->client_secret,
70:	'refresh_token' => $refresh_token, 'grant_type' => 'refresh_token'));
71:	}
72:	}
73:

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