<?php namespace la\core\cache;

[0] Fix | Delete

if ( ! defined( 'WPINC' ) ) die;

[1] Fix | Delete

if ( ! defined('FF_FACEBOOK_RATE_LIMIT')) define('FF_FACEBOOK_RATE_LIMIT', 200);

[2] Fix | Delete

[3] Fix | Delete

use Exception;

[4] Fix | Delete

use flow\social\cache\LAFacebookCacheManager as ILAFacebookCacheManager;

[5] Fix | Delete

use flow\social\FFFeedUtils;

[6] Fix | Delete

use flow\social\LASocialException;

[7] Fix | Delete

use la\core\db\LADBManager;

[8] Fix | Delete

use la\core\LAUtils;

[9] Fix | Delete

[10] Fix | Delete

/**

[11] Fix | Delete

* Flow-Flow.

[12] Fix | Delete

*

[13] Fix | Delete

* @package FlowFlow

[14] Fix | Delete

* @author Looks Awesome <email@looks-awesome.com>

[15] Fix | Delete

[16] Fix | Delete

* @link http://looks-awesome.com

[17] Fix | Delete

* @copyright Looks Awesome

[18] Fix | Delete

*/

[19] Fix | Delete

class LAFacebookCacheManager implements ILAFacebookCacheManager {

[20] Fix | Delete

protected static $postfix_at = 'la_facebook_access_token';

[21] Fix | Delete

protected static $postfix_at_expires = 'la_facebook_access_token_expires';

[22] Fix | Delete

[23] Fix | Delete

/** @var LADBManager */

[24] Fix | Delete

protected $db = null;

[25] Fix | Delete

private $auth = null;

[26] Fix | Delete

private $error = null;

[27] Fix | Delete

private $access_token = null;

[28] Fix | Delete

[29] Fix | Delete

private $hasHitLimit;

[30] Fix | Delete

private $creationTime;

[31] Fix | Delete

private $request_count;

[32] Fix | Delete

private $global_request_count;

[33] Fix | Delete

private $global_request_array;

[34] Fix | Delete

[35] Fix | Delete

public function __construct($context) {

[36] Fix | Delete

$this->db = LAUtils::dbm($context);

[37] Fix | Delete

}

[38] Fix | Delete

[39] Fix | Delete

public function getError(){

[40] Fix | Delete

return $this->error;

[41] Fix | Delete

}

[42] Fix | Delete

[43] Fix | Delete

/**

[44] Fix | Delete

* @throws Exception

[45] Fix | Delete

*/

[46] Fix | Delete

public function clean(){

[47] Fix | Delete

$this->deleteOption($this->getNameExtendedAccessToken());

[48] Fix | Delete

$this->deleteOption($this->getNameExtendedAccessToken(true));

[49] Fix | Delete

$this->db->deleteOption('facebook_access_token');

[50] Fix | Delete

}

[51] Fix | Delete

[52] Fix | Delete

/**

[53] Fix | Delete

* @return array|false|mixed|void|null

[54] Fix | Delete

* @throws Exception

[55] Fix | Delete

*/

[56] Fix | Delete

public function getAccessToken(){

[57] Fix | Delete

if ($this->access_token != null) return $this->access_token;

[58] Fix | Delete

[59] Fix | Delete

if ($this->isExpiredToken()){

[60] Fix | Delete

$this->error = [

[61] Fix | Delete

'type' => 'facebook',

[62] Fix | Delete

'message' => 'Access token is expired. Please go to AUTH tab to generate new token.'

[63] Fix | Delete

];

[64] Fix | Delete

return null;

[65] Fix | Delete

}

[66] Fix | Delete

[67] Fix | Delete

$token = null;

[68] Fix | Delete

if (false != ($token = $this->getStoredToken())){

[69] Fix | Delete

if ($this->isExpiresToken()){

[70] Fix | Delete

list($token, $expires, $error) = $this->refreshToken($token);

[71] Fix | Delete

if ($error == null) {

[72] Fix | Delete

$this->save($token, $expires);

[73] Fix | Delete

$this->db->update_options();

[74] Fix | Delete

}

[75] Fix | Delete

$this->error = $error;

[76] Fix | Delete

}

[77] Fix | Delete

$this->access_token = $token;

[78] Fix | Delete

}

[79] Fix | Delete

else {

[80] Fix | Delete

$this->error = [

[81] Fix | Delete

'type' => 'facebook',

[82] Fix | Delete

'message' => 'Access token is not found. Please go to AUTH tab to generate token.'

[83] Fix | Delete

];

[84] Fix | Delete

}

[85] Fix | Delete

return $token;

[86] Fix | Delete

}

[87] Fix | Delete

[88] Fix | Delete

protected function isExpiresToken() {

[89] Fix | Delete

$expires = $this->getOption($this->getNameExtendedAccessToken(true));

[90] Fix | Delete

return $expires === false || time() > ($expires - 2629743);

[91] Fix | Delete

}

[92] Fix | Delete

[93] Fix | Delete

protected function isExpiredToken() {

[94] Fix | Delete

$expires = $this->getOption($this->getNameExtendedAccessToken(true));

[95] Fix | Delete

return $expires === false || time() > $expires;

[96] Fix | Delete

}

[97] Fix | Delete

[98] Fix | Delete

protected function getStoredToken() {

[99] Fix | Delete

$at = $this->getNameExtendedAccessToken();

[100] Fix | Delete

if (false !== ($access_token_transient = $this->getOption($at))){

[101] Fix | Delete

$access_token = $access_token_transient;

[102] Fix | Delete

}

[103] Fix | Delete

else{

[104] Fix | Delete

$auth = $this->getAuth();

[105] Fix | Delete

$access_token = @$auth['facebook_access_token'];

[106] Fix | Delete

if(!isset($access_token) || empty($access_token)){

[107] Fix | Delete

return false;

[108] Fix | Delete

}

[109] Fix | Delete

}

[110] Fix | Delete

return $access_token;

[111] Fix | Delete

}

[112] Fix | Delete

[113] Fix | Delete

protected function refreshToken( $oldToken ) {

[114] Fix | Delete

$token_url = $this->getRefreshTokenUrl($oldToken);

[115] Fix | Delete

$settings = $this->db->getGeneralSettings();

[116] Fix | Delete

$response = FFFeedUtils::getFeedData($token_url, 20, false, true, $settings->useCurlFollowLocation(), $settings->useIPv4());

[117] Fix | Delete

if (false !== $response['response']){

[118] Fix | Delete

$response = (string)$response['response'];

[119] Fix | Delete

$response = (array)json_decode($response);

[120] Fix | Delete

$expires = (sizeof($response) > 2) ? (int)$response['expires_in'] : time() + 2629743*2;

[121] Fix | Delete

$access_token = $response['access_token'];

[122] Fix | Delete

return [ $access_token, $expires, null ];

[123] Fix | Delete

}

[124] Fix | Delete

else if (isset($response['errors'])) {

[125] Fix | Delete

$error = $response['errors'][0];

[126] Fix | Delete

return [

[127] Fix | Delete

null, null, [

[128] Fix | Delete

'type' => 'facebook',

[129] Fix | Delete

'message' => $this->filter_error_message($error['msg']),

[130] Fix | Delete

'url' => $token_url

[131] Fix | Delete

]

[132] Fix | Delete

];

[133] Fix | Delete

}

[134] Fix | Delete

return [ null, null, false ];

[135] Fix | Delete

}

[136] Fix | Delete

[137] Fix | Delete

/**

[138] Fix | Delete

* @param $token

[139] Fix | Delete

* @param $expires

[140] Fix | Delete

*

[141] Fix | Delete

* @throws Exception

[142] Fix | Delete

*/

[143] Fix | Delete

public function save($token, $expires){

[144] Fix | Delete

$this->updateOption($this->getNameExtendedAccessToken(), $token);

[145] Fix | Delete

$this->updateOption($this->getNameExtendedAccessToken(true), time() + ( isset($expires) ? $expires : 2629743 ));

[146] Fix | Delete

}

[147] Fix | Delete

[148] Fix | Delete

protected function getRefreshTokenUrl($access_token){

[149] Fix | Delete

$auth = $this->getAuth();

[150] Fix | Delete

$facebookAppId = $auth['facebook_app_id'];

[151] Fix | Delete

$facebookAppSecret = $auth['facebook_app_secret'];

[152] Fix | Delete

return "https://graph.facebook.com/oauth/access_token?client_id={$facebookAppId}&client_secret={$facebookAppSecret}&grant_type=fb_exchange_token&fb_exchange_token={$access_token}";

[153] Fix | Delete

}

[154] Fix | Delete

[155] Fix | Delete

protected function getNameExtendedAccessToken($expires = false){

[156] Fix | Delete

$auth = $this->getAuth();

[157] Fix | Delete

$facebookAppId = $auth['facebook_app_id'];

[158] Fix | Delete

$facebookAppSecret = $auth['facebook_app_secret'];

[159] Fix | Delete

$name = $expires ? self::$postfix_at_expires : self::$postfix_at;

[160] Fix | Delete

return $name . substr(hash('md5', $facebookAppId . $facebookAppSecret), 0, 6);

[161] Fix | Delete

}

[162] Fix | Delete

[163] Fix | Delete

protected function getAuth(){

[164] Fix | Delete

if (empty($this->auth)){

[165] Fix | Delete

$this->auth = $this->db->getOption('fb_auth_options', true);

[166] Fix | Delete

}

[167] Fix | Delete

return $this->auth;

[168] Fix | Delete

}

[169] Fix | Delete

[170] Fix | Delete

private function getOption($name){

[171] Fix | Delete

return FF_USE_WP ? get_option($name) : $this->db->getOption($name);

[172] Fix | Delete

}

[173] Fix | Delete

[174] Fix | Delete

/**

[175] Fix | Delete

* @param $name

[176] Fix | Delete

* @param $value

[177] Fix | Delete

*

[178] Fix | Delete

* @throws Exception

[179] Fix | Delete

*/

[180] Fix | Delete

private function updateOption($name, $value){

[181] Fix | Delete

FF_USE_WP ? update_option($name, $value) : $this->db->setOption($name, $value);

[182] Fix | Delete

}

[183] Fix | Delete

[184] Fix | Delete

/**

[185] Fix | Delete

* @param $name

[186] Fix | Delete

*

[187] Fix | Delete

* @throws Exception

[188] Fix | Delete

*/

[189] Fix | Delete

private function deleteOption($name){

[190] Fix | Delete

FF_USE_WP ? delete_option($name) : $this->db->deleteOption($name);

[191] Fix | Delete

}

[192] Fix | Delete

[193] Fix | Delete

private function filter_error_message($message){

[194] Fix | Delete

if (is_array($message)){

[195] Fix | Delete

if (sizeof($message) > 0 && isset($message[0]['msg'])){

[196] Fix | Delete

return stripslashes(htmlspecialchars($message[0]['msg'], ENT_QUOTES | ENT_SUBSTITUTE, 'UTF-8'));

[197] Fix | Delete

}

[198] Fix | Delete

else {

[199] Fix | Delete

return '';

[200] Fix | Delete

}

[201] Fix | Delete

}

[202] Fix | Delete

return stripslashes(htmlspecialchars($message, ENT_QUOTES | ENT_SUBSTITUTE, 'UTF-8'));

[203] Fix | Delete

}

[204] Fix | Delete

[205] Fix | Delete

/**

[206] Fix | Delete

* @return bool

[207] Fix | Delete

* @throws LASocialException

[208] Fix | Delete

* @throws Exception

[209] Fix | Delete

*/

[210] Fix | Delete

public function startCounter() {

[211] Fix | Delete

$this->request_count = 0;

[212] Fix | Delete

$this->hasHitLimit = false;

[213] Fix | Delete

$conn = $this->db->conn();

[214] Fix | Delete

if ( $conn->beginTransaction()){

[215] Fix | Delete

$limit = $this->db->getOption('fb_limit_counter', true, true);

[216] Fix | Delete

if ($limit === false){

[217] Fix | Delete

@$this->db->setOption('fb_limit_counter', [], true, false);

[218] Fix | Delete

$limit = $this->db->getOption('fb_limit_counter', true, true);

[219] Fix | Delete

}

[220] Fix | Delete

[221] Fix | Delete

if (!is_array($limit)){

[222] Fix | Delete

$conn->rollback();

[223] Fix | Delete

throw new LASocialException('Can`t save `fb_limit_counter` option to mysql db.');

[224] Fix | Delete

}

[225] Fix | Delete

[226] Fix | Delete

$this->creationTime = time();

[227] Fix | Delete

$this->global_request_count = 0;

[228] Fix | Delete

$limitTime = $this->creationTime - 3600;

[229] Fix | Delete

$result = [];

[230] Fix | Delete

foreach ( $limit as $time => $count ) {

[231] Fix | Delete

if ($time > $limitTime) {

[232] Fix | Delete

$result[$time] = $count;

[233] Fix | Delete

$this->global_request_count += (int)$count;

[234] Fix | Delete

}

[235] Fix | Delete

}

[236] Fix | Delete

$this->global_request_array = $result;

[237] Fix | Delete

[238] Fix | Delete

if ($this->global_request_count + 4 > FF_FACEBOOK_RATE_LIMIT) {

[239] Fix | Delete

$conn->rollback();

[240] Fix | Delete

throw new LASocialException('Your site has hit the Facebook API rate limit. <a href="http://docs.social-streams.com/article/133-facebook-app-request-limit-reached" target="_blank">Troubleshooting</a>.');

[241] Fix | Delete

}

[242] Fix | Delete

}

[243] Fix | Delete

else {

[244] Fix | Delete

$conn->rollback();

[245] Fix | Delete

throw new LASocialException('Can`t get mysql transaction.');

[246] Fix | Delete

}

[247] Fix | Delete

return true;

[248] Fix | Delete

}

[249] Fix | Delete

[250] Fix | Delete

/**

[251] Fix | Delete

* @throws Exception

[252] Fix | Delete

*/

[253] Fix | Delete

public function stopCounter() {

[254] Fix | Delete

if ($this->request_count > 0) {

[255] Fix | Delete

$this->global_request_array[$this->creationTime] = $this->request_count;

[256] Fix | Delete

}

[257] Fix | Delete

$this->db->setOption('fb_limit_counter', $this->global_request_array, true, false);

[258] Fix | Delete

$this->db->conn()->commit();

[259] Fix | Delete

}

[260] Fix | Delete

[261] Fix | Delete

public function hasLimit() {

[262] Fix | Delete

if ($this->hasHitLimit) return false;

[263] Fix | Delete

if ($this->global_request_count + $this->request_count + 3 > FF_FACEBOOK_RATE_LIMIT) {

[264] Fix | Delete

$this->hasHitLimit = true;

[265] Fix | Delete

return false;

[266] Fix | Delete

}

[267] Fix | Delete

return true;

[268] Fix | Delete

}

[269] Fix | Delete

[270] Fix | Delete

public function addRequest() {

[271] Fix | Delete

$this->request_count++;

[272] Fix | Delete

}

[273] Fix | Delete

[274] Fix | Delete

public function getIdPosts($feedId) {

[275] Fix | Delete

return $this->db->getIdPosts($feedId);

[276] Fix | Delete

}

[277] Fix | Delete

}

[278] Fix | Delete