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<?php
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namespace Mezon\SocialNetwork;
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/**
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* Class SocialNetworkAuth
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*
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* @package SocialNetwork
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* @subpackage SocialNetworkAuth
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* @author Dodonov A.A.
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* @version v.1.0 (2019/08/17)
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* @copyright Copyright (c) 2019, aeon.org
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*/
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/**
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* Class provides integration with social networks authorization APIs.
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*
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* @author Dodonov A.A.
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*/
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abstract class BaseAuth
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{
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/**
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* Authorization settings.
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*
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* @var array
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*/
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protected $settings = [];
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/**
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* Fetched user's info.
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*
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* @var array
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*/
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protected $userInfo = [];
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/**
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* Constructor.
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*
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* @param array $settings
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* - Connection settings.
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*/
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public function __construct(array $settings)
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{
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if (isset($settings['client_id'], $settings['client_secret'], $settings['redirect_uri'])) {
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$this->settings = $settings;
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}
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}
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/**
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* Method returns request result
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*
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* @param string $URL
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* @return string Request result
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*/
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protected function getRequest(string $url): string
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{
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// @codeCoverageIgnoreStart
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return file_get_contents($url);
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// @codeCoverageIgnoreEnd
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}
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/**
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* Metthod tryes to authorize user.
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*
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* @param string $Code
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* - Code.
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* @return boolean True on success. False otherwise.
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*/
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public function auth(string $code): bool
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{
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if ($code && ! empty($this->settings)) {
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$params = $this->getTokenParams($code);
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$token = $this->requestToken($params);
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if (isset($token['access_token'])) {
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$query = http_build_query(
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[
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'access_token' => $token['access_token'],
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'fields' => $this->getDesiredFields()
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]);
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$query = urldecode($query);
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$this->userInfo = json_decode(
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$this->getRequest($this->getUserInfoUri($token['access_token']) . $query),
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true);
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$this->userInfo = $this->dispatchUserInfo($this->userInfo);
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if (isset($this->userInfo['id'])) {
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return true;
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}
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}
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}
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return false;
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}
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/**
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* Method returns authorization URL.
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*
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* @return string Authorization url.
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*/
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public function getLink(): string
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{
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if (! empty($this->settings)) {
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$query = http_build_query(
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[
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'client_id' => $this->settings['client_id'],
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'redirect_uri' => $this->settings['redirect_uri'],
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'response_type' => 'code'
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]);
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$query = urldecode($query);
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return $this->getOauthUri() . $query;
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}
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throw (new \Exception('Social network\'s authorization URL was not found.'));
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}
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/**
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* Method returns URL wich generates tokens.
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*
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* @return string URL
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*/
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abstract public function getOauthUri(): string;
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/**
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* Method return URL wich provides user's info
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*
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* @param string $token
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* Token
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* @return string URL
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*/
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abstract public function getUserInfoUri(string $token = ''): string;
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/**
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* Method returns token URL
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*
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* @return string URL
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*/
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abstract public function getTokenUri(): string;
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/**
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* Method returns a list of desired fields
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*
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* @return string Comma separated of the desired fields
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*/
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public function getDesiredFields(): string
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{
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return 'desired,fields';
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}
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/**
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* Method dispatches user info
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*
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* @param array $userInfo
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* User info got from social network
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* @return array Dispatched user info. Must be as array with keys id, first_name, last_name, email, picture
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*/
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public function dispatchUserInfo(array $userInfo): array
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{
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$userInfo['picture'] = $userInfo['picture']['data']['url'];
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return $userInfo;
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}
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/**
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* Method returns params for getting token
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*
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* @param string $code
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* Access code
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* @return array Params
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*/
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public function getTokenParams(string $code): array
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{
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return [
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'client_id' => $this->settings['client_id'],
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'redirect_uri' => $this->settings['redirect_uri'],
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'client_secret' => $this->settings['client_secret'],
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'code' => $code
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];
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}
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/**
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* Method requests token from server
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*
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* @param array $params
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* Request params
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* @return array Token data
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*/
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public function requestToken(array $params): array
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{
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$query = urldecode(http_build_query($params));
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return json_decode(file_get_contents($this->getTokenUri() . $query), true);
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}
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/**
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* Method returns settings
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*
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* @return array settigs
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*/
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public function getSettings(): array
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{
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return $this->settings;
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}
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}
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alexdodonov /
mezon-social-network
