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- <?php
- /**
- * Copyright 2004-2017 Facebook. All Rights Reserved.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * @package WebDriver
- *
- * @author Justin Bishop <jubishop@gmail.com>
- * @author Anthon Pang <apang@softwaredevelopment.ca>
- * @author Fabrizio Branca <mail@fabrizio-branca.de>
- * @author Tsz Ming Wong <tszming@gmail.com>
- */
- namespace WebDriver;
- use WebDriver\Exception as WebDriverException;
- /**
- * Abstract WebDriver\AbstractWebDriver class
- *
- * @package WebDriver
- */
- abstract class AbstractWebDriver
- {
- /**
- * URL
- *
- * @var string
- */
- protected $url;
- /**
- * Return array of supported method names and corresponding HTTP request methods
- *
- * @return array
- */
- abstract protected function methods();
- /**
- * Return array of obsolete method names and corresponding HTTP request methods
- *
- * @return array
- */
- protected function obsoleteMethods()
- {
- return array();
- }
- /**
- * Constructor
- *
- * @param string $url URL to Selenium server
- */
- public function __construct($url = 'http://localhost:4444/wd/hub')
- {
- $this->url = $url;
- }
- /**
- * Magic method which returns URL to Selenium server
- *
- * @return string
- */
- public function __toString()
- {
- return $this->url;
- }
- /**
- * Returns URL to Selenium server
- *
- * @return string
- */
- public function getURL()
- {
- return $this->url;
- }
- /**
- * Curl request to webdriver server.
- *
- * @param string $requestMethod HTTP request method, e.g., 'GET', 'POST', or 'DELETE'
- * @param string $command If not defined in methods() this function will throw.
- * @param array $parameters If an array(), they will be posted as JSON parameters
- * If a number or string, "/$params" is appended to url
- * @param array $extraOptions key=>value pairs of curl options to pass to curl_setopt()
- *
- * @return array array('value' => ..., 'info' => ...)
- *
- * @throws \WebDriver\Exception if error
- */
- protected function curl($requestMethod, $command, $parameters = null, $extraOptions = array())
- {
- if ($parameters && is_array($parameters) && $requestMethod !== 'POST') {
- throw WebDriverException::factory(
- WebDriverException::NO_PARAMETERS_EXPECTED,
- sprintf(
- 'The http request method called for %s is %s but it has to be POST if you want to pass the JSON parameters %s',
- $command,
- $requestMethod,
- json_encode($parameters)
- )
- );
- }
- $url = sprintf('%s%s', $this->url, $command);
- if ($parameters && (is_int($parameters) || is_string($parameters))) {
- $url .= '/' . $parameters;
- }
- list($rawResult, $info) = ServiceFactory::getInstance()->getService('service.curl')->execute($requestMethod, $url, $parameters, $extraOptions);
- $httpCode = $info['http_code'];
- // According to https://w3c.github.io/webdriver/webdriver-spec.html all 4xx responses are to be considered
- // an error and return plaintext, while 5xx responses are json encoded
- if ($httpCode >= 400 && $httpCode <= 499) {
- throw WebDriverException::factory(
- WebDriverException::CURL_EXEC,
- 'Webdriver http error: ' . $httpCode . ', payload :' . substr($rawResult, 0, 1000)
- );
- }
- $result = json_decode($rawResult, true);
- if (!empty($rawResult) && $result === null && json_last_error() != JSON_ERROR_NONE) {
- throw WebDriverException::factory(
- WebDriverException::CURL_EXEC,
- 'Payload received from webdriver is not valid json: ' . substr($rawResult, 0, 1000)
- );
- }
- if (is_array($result) && !array_key_exists('status', $result)) {
- throw WebDriverException::factory(
- WebDriverException::CURL_EXEC,
- 'Payload received from webdriver is valid but unexpected json: ' . substr($rawResult, 0, 1000)
- );
- }
- $value = (is_array($result) && array_key_exists('value', $result)) ? $result['value'] : null;
- $message = (is_array($value) && array_key_exists('message', $value)) ? $value['message'] : null;
- // if not success, throw exception
- if ((int) $result['status'] !== 0) {
- throw WebDriverException::factory($result['status'], $message);
- }
- $sessionId = isset($result['sessionId'])
- ? $result['sessionId']
- : (isset($value['webdriver.remote.sessionid'])
- ? $value['webdriver.remote.sessionid']
- : null
- );
- return array(
- 'value' => $value,
- 'info' => $info,
- 'sessionId' => $sessionId,
- 'sessionUrl' => $sessionId ? $this->url . '/session/' . $sessionId : $info['url'],
- );
- }
- /**
- * Magic method that maps calls to class methods to execute WebDriver commands
- *
- * @param string $name Method name
- * @param array $arguments Arguments
- *
- * @return mixed
- *
- * @throws \WebDriver\Exception if invalid WebDriver command
- */
- public function __call($name, $arguments)
- {
- if (count($arguments) > 1) {
- throw WebDriverException::factory(
- WebDriverException::JSON_PARAMETERS_EXPECTED,
- 'Commands should have at most only one parameter, which should be the JSON Parameter object'
- );
- }
- if (preg_match('/^(get|post|delete)/', $name, $matches)) {
- $requestMethod = strtoupper($matches[0]);
- $webdriverCommand = strtolower(substr($name, strlen($requestMethod)));
- } else {
- $webdriverCommand = $name;
- $requestMethod = $this->getRequestMethod($webdriverCommand);
- }
- $methods = $this->methods();
- if (!in_array($requestMethod, (array) $methods[$webdriverCommand])) {
- throw WebDriverException::factory(
- WebDriverException::INVALID_REQUEST,
- sprintf(
- '%s is not an available http request method for the command %s.',
- $requestMethod,
- $webdriverCommand
- )
- );
- }
- $result = $this->curl(
- $requestMethod,
- '/' . $webdriverCommand,
- array_shift($arguments)
- );
- return $result['value'];
- }
- /**
- * Get default HTTP request method for a given WebDriver command
- *
- * @param string $webdriverCommand
- *
- * @return string
- *
- * @throws \WebDriver\Exception if invalid WebDriver command
- */
- private function getRequestMethod($webdriverCommand)
- {
- if (!array_key_exists($webdriverCommand, $this->methods())) {
- throw WebDriverException::factory(
- array_key_exists($webdriverCommand, $this->obsoleteMethods())
- ? WebDriverException::OBSOLETE_COMMAND : WebDriverException::UNKNOWN_COMMAND,
- sprintf('%s is not a valid WebDriver command.', $webdriverCommand)
- );
- }
- $methods = $this->methods();
- $requestMethods = (array) $methods[$webdriverCommand];
- return array_shift($requestMethods);
- }
- }
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