<?php

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/**

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* Basic Authentication provider

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*

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* @package Requests\Authentication

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*/

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namespace WpOrg\Requests\Auth;

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use WpOrg\Requests\Auth;

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use WpOrg\Requests\Exception\ArgumentCount;

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use WpOrg\Requests\Exception\InvalidArgument;

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use WpOrg\Requests\Hooks;

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/**

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* Basic Authentication provider

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*

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* Provides a handler for Basic HTTP authentication via the Authorization

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* header.

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*

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* @package Requests\Authentication

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*/

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class Basic implements Auth {

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/**

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* Username

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*

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* @var string

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*/

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public $user;

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/**

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* Password

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*

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* @var string

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*/

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public $pass;

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/**

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* Constructor

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*

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* @since 2.0 Throws an `InvalidArgument` exception.

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* @since 2.0 Throws an `ArgumentCount` exception instead of the Requests base `Exception.

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*

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* @param array|null $args Array of user and password. Must have exactly two elements

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*

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* @throws \WpOrg\Requests\Exception\InvalidArgument When the passed argument is not an array or null.

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* @throws \WpOrg\Requests\Exception\ArgumentCount On incorrect number of array elements (`authbasicbadargs`).

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*/

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public function __construct($args = null) {

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if (is_array($args)) {

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if (count($args) !== 2) {

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throw ArgumentCount::create('an array with exactly two elements', count($args), 'authbasicbadargs');

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}

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list($this->user, $this->pass) = $args;

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return;

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}

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if ($args !== null) {

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throw InvalidArgument::create(1, '$args', 'array|null', gettype($args));

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}

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}

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/**

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* Register the necessary callbacks

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*

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* @see \WpOrg\Requests\Auth\Basic::curl_before_send()

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* @see \WpOrg\Requests\Auth\Basic::fsockopen_header()

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* @param \WpOrg\Requests\Hooks $hooks Hook system

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*/

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public function register(Hooks $hooks) {

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$hooks->register('curl.before_send', [$this, 'curl_before_send']);

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$hooks->register('fsockopen.after_headers', [$this, 'fsockopen_header']);

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}

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/**

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* Set cURL parameters before the data is sent

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*

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* @param resource|\CurlHandle $handle cURL handle

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*/

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public function curl_before_send(&$handle) {

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curl_setopt($handle, CURLOPT_HTTPAUTH, CURLAUTH_BASIC);

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curl_setopt($handle, CURLOPT_USERPWD, $this->getAuthString());

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}

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/**

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* Add extra headers to the request before sending

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*

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* @param string $out HTTP header string

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*/

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public function fsockopen_header(&$out) {

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$out .= sprintf("Authorization: Basic %s\r\n", base64_encode($this->getAuthString()));

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}

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/**

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* Get the authentication string (user:pass)

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*

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* @return string

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*/

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public function getAuthString() {

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return $this->user . ':' . $this->pass;

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}

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}

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