comparison vendor/instaclick/php-webdriver/lib/WebDriver/AbstractWebDriver.php @ 14:1fec387a4317

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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 <[e-mail]>
+ * @author Anthon Pang <[e-mail]>
+ * @author Fabrizio Branca <[e-mail]>
+ * @author Tsz Ming Wong <[e-mail]>
+ */
+
+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);
+    }
+}