yahoo.php.default

<?php
class YAHOO_CONFIG {

	public $default = array(
		'login' => 'your_yahoo_account',
		'passwd' => 'your_yahoo_password',
	);

}

YahooAuction.php

<?php
/**
 * require QueryPath
 *
 **/
App::uses('AppModel', 'Model');
App::uses('HttpSocket', 'Network/Http');
App::import('Vendor', 'autoload');

class YahooAuction extends AppModel {

	public $useTable = false;

	public $useYahooConfig = 'default';

	public $YahooConfig;

	public $HttpSocket;

	public $loginUrl = 'https://login.yahoo.co.jp/config/login';

	public $loginQuery = array(
		'.lg' => 'jp',
		'.intl' => 'jp',
		'.src' => 'auc',
		'.done' => 'http://auctions.yahoo.co.jp/'
	);

	public $userAgent = 'Mozilla/6.0 (Windows; U; Windows NT 6.0; ja; rv:1.9.1.1) Gecko/20090715 Firefox/3.5.1 (.NET CLR 3.5.30729)';

	public $cookies = array();

	public function __construct($id = false, $table = null, $ds = null) {
		parent::__construct($id, $table, $ds);

		include_once APP . 'Config' . DS . 'yahoo.php';
		if (class_exists('YAHOO_CONFIG')) {
			$this->YahooConfig = new YAHOO_CONFIG();
		} else {
			throw new Exception('YAHOO_CONFIG is not exists.');
		}

		$this->HttpSocket = new HttpSocket(array(
			'request' => array(
				'redirect' => true,
				'header' => array(
					'User-Agent' => $this->userAgent
				)
			)
		));
	}

	public function httpGet($url, $query = array(), $options = array()) {
		$options += array(
			'cookies' => $this->cookies
		);
		if (isset($options['referer'])) {
			$options += array(
				'header' => array(
					'Referer' => $options['referer']
				)
			);
			unset($options['referer']);
		}

		$Response = $this->HttpSocket->get($url, $query, $options);
		$this->HttpSocket->reset();

		$this->cookies($Response->cookies);

		return $Response;
	}

	public function httpPost($url, $data = array(), $options = array()) {
		$options += array(
			'cookies' => $this->cookies
		);
		if (isset($options['referer'])) {
			$options += array(
				'header' => array(
					'Referer' => $options['referer']
				)
			);
			unset($options['referer']);
		}

		$Response = $this->HttpSocket->post($url, $data, $options);
		$this->HttpSocket->reset();
		$this->cookies($Response->cookies);

		return $Response;
	}

	public function login() {
		$this->httpGet('http://auctions.yahoo.co.jp/');

		$Response = $this->httpGet($this->loginUrl, $this->loginQuery, array(
			'referer' => 'http://auctions.yahoo.co.jp/'
		));

		$Html = QueryPath::withHTML($Response->body(), null, array(
			'convert_to_encoding' => 'UTF-8'
		));

		$albatross = null;
		if (preg_match_all(
			'/document\.getElementsByName\("\.albatross"\)\[0\]\.value = "(.*?)";/',
			$Html->find('script')->text(),
			$matches
		)) {
			$albatross = $matches[1][0];
		}

		$data = $this->YahooConfig->{$this->useYahooConfig} + array(
			'.persistent' => 'y',
			'.albatross' => $albatross
		);

		$Form = $Html->find('#login_form');
		$Form->remove('noscript');
		$hiddenFields = $Form->find('input');
		foreach ($hiddenFields as $field) {
			if ($field->attr('type') === 'hidden' && !isset($data[$field->attr('name')])) {
				$data[$field->attr('name')] = $field->attr('value');
			}
		}

		sleep(3);
		$Response = $this->httpPost($Form->attr('action'), $data, array(
			'referer' => $Form->attr('action')
		));
		if (!$Response->cookies) {
			throw new Exception('Yahoo could not login.');
		}
	}

	public function cookies($cookies = array()) {
		if (!empty($cookies)) {
			$this->cookies = array_merge($this->cookies, $cookies);
		} else {
			return $this->cookies;
		}
	}

}

YahooAuctionTest.php

<?php
App::uses('YahooAuction', 'Model');

class YahooAuctionTest extends CakeTestCase {

	public $fixtures = array();

	public function setUp() {
		parent::setUp();
		$this->YahooAuction = ClassRegistry::init('YahooAuction');
	}

	public function tearDown() {
		unset($this->YahooAuction);

		parent::tearDown();
	}

	public function testLogin() {
		$this->YahooAuction->login();

		$Response = $this->YahooAuction->httpGet('http://auctions.yahoo.co.jp/');
		$Html = QueryPath::withHTML($Response->body(), null, array(
			'convert_to_encoding' => 'UTF-8'
		));
		var_dump($Html->find('.decTd01 b')->text());
	}

}