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WebDriverService.cpp
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/*
* Copyright (C) 2017 Igalia S.L.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "WebDriverService.h"
#include "Capabilities.h"
#include "CommandResult.h"
#include "Logging.h"
#include "SessionHost.h"
#include <wtf/Compiler.h>
#include <wtf/LoggerHelper.h>
#include <wtf/RunLoop.h>
#include <wtf/SortedArrayMap.h>
#include <wtf/text/MakeString.h>
#include <wtf/text/StringToIntegerConversion.h>
#include <wtf/text/WTFString.h>
#if ENABLE(WEBDRIVER_BIDI)
#include "HTTPServer.h"
#include "WebSocketServer.h"
#include <algorithm>
#include <array>
#include <cstdio>
#include <limits>
#include <optional>
#include <wtf/JSONValues.h>
#include <wtf/StdLibExtras.h>
#include <wtf/glib/GTypedefs.h>
#endif
namespace WebDriver {
// https://w3c.github.io/webdriver/webdriver-spec.html#dfn-maximum-safe-integer
static const double maxSafeInteger = 9007199254740991.0; // 2 ^ 53 - 1
WebDriverService::WebDriverService()
: m_server(*this)
#if ENABLE(WEBDRIVER_BIDI)
, m_bidiServer(WebSocketServer::create(*this))
, m_browserTerminatedObserver([this](const String& sessionID) { onBrowserTerminated(sessionID); })
#endif
{
#if ENABLE(WEBDRIVER_BIDI)
SessionHost::addBrowserTerminatedObserver(m_browserTerminatedObserver);
#endif
}
WebDriverService::~WebDriverService()
{
#if ENABLE(WEBDRIVER_BIDI)
SessionHost::removeBrowserTerminatedObserver(m_browserTerminatedObserver);
#endif
}
static void printUsageStatement(const char* programName)
{
SAFE_PRINTF("Usage: %s options\n", String::fromLatin1(programName).utf8());
SAFE_PRINTF(" -h, --help Prints this help message\n");
SAFE_PRINTF(" -p <port>, --port=<port> Port number the driver will use\n");
SAFE_PRINTF(" --host=<host> Host IP the driver will use, or either 'local' or 'all' (default: 'local')\n");
SAFE_PRINTF(" -t <ip:port> --target=<ip:port> Target IP and port\n");
#if ENABLE(WEBDRIVER_BIDI)
SAFE_PRINTF(" --bidi-port=<port> Port number to use for BiDi's WebSocket connections\n");
#endif
SAFE_PRINTF(" --replace-on-new-session Replace the existing session on new session request\n");
}
int WebDriverService::run(int argc, char** argv)
{
String portString;
std::optional<String> host;
#if ENABLE(WEBDRIVER_BIDI)
String bidiPortString;
#endif
String targetString;
if (const char* targetEnvVar = getenv("WEBDRIVER_TARGET_ADDR"))
targetString = String::fromLatin1(targetEnvVar);
for (int i = 1 ; i < argc; ++i) {
auto arg = unsafeSpan(argv[i]);
if (equalSpans(arg, "-h"_span) || equalSpans(arg, "--help"_span)) {
printUsageStatement(argv[0]);
return EXIT_SUCCESS;
}
if (equalSpans(arg, "-p"_span) && portString.isNull()) {
if (++i == argc) {
printUsageStatement(argv[0]);
return EXIT_FAILURE;
}
portString = String::fromLatin1(argv[i]);
continue;
}
static constexpr auto portArgument = "--port="_span;
if (spanHasPrefix(arg, portArgument) && portString.isNull()) {
portString = arg.subspan(portArgument.size());
continue;
}
static constexpr auto hostArgument = "--host="_span;
if (spanHasPrefix(arg, hostArgument) && !host) {
host = arg.subspan(hostArgument.size());
continue;
}
#if ENABLE(WEBDRIVER_BIDI)
static constexpr auto bidiPortArgument = "--bidi-port="_span;
if (spanHasPrefix(arg, bidiPortArgument) && bidiPortString.isNull()) {
bidiPortString = arg.subspan(bidiPortArgument.size());
continue;
}
#endif
if (equalSpans(arg, "-t"_span) && targetString.isNull()) {
if (++i == argc) {
printUsageStatement(argv[0]);
return EXIT_FAILURE;
}
targetString = String::fromLatin1(argv[i]);
continue;
}
static constexpr auto targetArgument = "--target="_span;
if (spanHasPrefix(arg, targetArgument) && targetString.isNull()) {
targetString = arg.subspan(targetArgument.size());
continue;
}
if (equalSpans(arg, "--replace-on-new-session"_span)) {
m_replaceOnNewSession = true;
continue;
}
}
if (portString.isNull()) {
printUsageStatement(argv[0]);
return EXIT_FAILURE;
}
if (!targetString.isEmpty()) {
auto position = targetString.reverseFind(':');
if (position != notFound) {
m_targetAddress = targetString.left(position);
m_targetPort = parseIntegerAllowingTrailingJunk<uint16_t>(StringView { targetString }.substring(position + 1)).value_or(0);
}
}
auto port = parseInteger<uint16_t>(portString);
if (!port) {
fprintf(stderr, "Invalid port %s provided\n", portString.utf8().data());
return EXIT_FAILURE;
}
#if ENABLE(WEBDRIVER_BIDI)
auto bidiPort = parseInteger<uint16_t>(bidiPortString);
if (!bidiPort) {
const int16_t bidiPortIncrement = *port == std::numeric_limits<uint16_t>::max() ? -1 : 1;
bidiPort = { *port + bidiPortIncrement };
fprintf(stderr, "Invalid WebSocket BiDi port %s provided. Defaulting to %d.\n", bidiPortString.utf8().data(), *bidiPort);
}
#endif
WTF::initializeMainThread();
const char* hostStr = host && host->utf8().data() ? host->utf8().data() : "local";
#if ENABLE(WEBDRIVER_BIDI)
if (!m_bidiServer->listen(host ? *host : nullString(), *bidiPort)) {
fprintf(stderr, "FATAL: Unable to listen for WebSocket BiDi server at host %s and port %d.\n", hostStr, *bidiPort);
return EXIT_FAILURE;
}
RELEASE_LOG(WebDriverBiDi, "Started WebSocket BiDi server with host %s and port %d", hostStr, *bidiPort);
#endif // ENABLE(WEBDRIVER_BIDI)
if (!m_server.listen(host, *port)) {
fprintf(stderr, "FATAL: Unable to listen for HTTP server at host %s and port %d.\n", hostStr, *port);
return EXIT_FAILURE;
}
RELEASE_LOG(WebDriverClassic, "Started HTTP server with host %s and port %d", hostStr, *port);
RunLoop::run();
#if ENABLE(WEBDRIVER_BIDI)
m_bidiServer->disconnect();
#endif
m_server.disconnect();
return EXIT_SUCCESS;
}
const WebDriverService::Command WebDriverService::s_commands[] = {
{ HTTPMethod::Post, "/session", &WebDriverService::newSession },
{ HTTPMethod::Delete, "/session/$sessionId", &WebDriverService::deleteSession },
{ HTTPMethod::Get, "/status", &WebDriverService::status },
{ HTTPMethod::Get, "/session/$sessionId/timeouts", &WebDriverService::getTimeouts },
{ HTTPMethod::Post, "/session/$sessionId/timeouts", &WebDriverService::setTimeouts },
{ HTTPMethod::Post, "/session/$sessionId/url", &WebDriverService::go },
{ HTTPMethod::Get, "/session/$sessionId/url", &WebDriverService::getCurrentURL },
{ HTTPMethod::Post, "/session/$sessionId/back", &WebDriverService::back },
{ HTTPMethod::Post, "/session/$sessionId/forward", &WebDriverService::forward },
{ HTTPMethod::Post, "/session/$sessionId/refresh", &WebDriverService::refresh },
{ HTTPMethod::Get, "/session/$sessionId/title", &WebDriverService::getTitle },
{ HTTPMethod::Get, "/session/$sessionId/window", &WebDriverService::getWindowHandle },
{ HTTPMethod::Delete, "/session/$sessionId/window", &WebDriverService::closeWindow },
{ HTTPMethod::Post, "/session/$sessionId/window", &WebDriverService::switchToWindow },
{ HTTPMethod::Get, "/session/$sessionId/window/handles", &WebDriverService::getWindowHandles },
{ HTTPMethod::Post, "/session/$sessionId/window/new", &WebDriverService::newWindow },
{ HTTPMethod::Post, "/session/$sessionId/frame", &WebDriverService::switchToFrame },
{ HTTPMethod::Post, "/session/$sessionId/frame/parent", &WebDriverService::switchToParentFrame },
{ HTTPMethod::Get, "/session/$sessionId/window/rect", &WebDriverService::getWindowRect },
{ HTTPMethod::Post, "/session/$sessionId/window/rect", &WebDriverService::setWindowRect },
{ HTTPMethod::Post, "/session/$sessionId/window/maximize", &WebDriverService::maximizeWindow },
{ HTTPMethod::Post, "/session/$sessionId/window/minimize", &WebDriverService::minimizeWindow },
{ HTTPMethod::Post, "/session/$sessionId/window/fullscreen", &WebDriverService::fullscreenWindow },
{ HTTPMethod::Post, "/session/$sessionId/element", &WebDriverService::findElement },
{ HTTPMethod::Post, "/session/$sessionId/elements", &WebDriverService::findElements },
{ HTTPMethod::Post, "/session/$sessionId/element/$elementId/element", &WebDriverService::findElementFromElement },
{ HTTPMethod::Post, "/session/$sessionId/element/$elementId/elements", &WebDriverService::findElementsFromElement },
{ HTTPMethod::Post, "/session/$sessionId/shadow/$shadowId/element", &WebDriverService::findElementFromShadowRoot },
{ HTTPMethod::Post, "/session/$sessionId/shadow/$shadowId/elements", &WebDriverService::findElementsFromShadowRoot },
{ HTTPMethod::Get, "/session/$sessionId/element/active", &WebDriverService::getActiveElement },
{ HTTPMethod::Get, "/session/$sessionId/element/$elementId/shadow", &WebDriverService::getElementShadowRoot },
{ HTTPMethod::Get, "/session/$sessionId/element/$elementId/selected", &WebDriverService::isElementSelected },
{ HTTPMethod::Get, "/session/$sessionId/element/$elementId/attribute/$name", &WebDriverService::getElementAttribute },
{ HTTPMethod::Get, "/session/$sessionId/element/$elementId/property/$name", &WebDriverService::getElementProperty },
{ HTTPMethod::Get, "/session/$sessionId/element/$elementId/css/$name", &WebDriverService::getElementCSSValue },
{ HTTPMethod::Get, "/session/$sessionId/element/$elementId/text", &WebDriverService::getElementText },
{ HTTPMethod::Get, "/session/$sessionId/element/$elementId/name", &WebDriverService::getElementTagName },
{ HTTPMethod::Get, "/session/$sessionId/element/$elementId/rect", &WebDriverService::getElementRect },
{ HTTPMethod::Get, "/session/$sessionId/element/$elementId/enabled", &WebDriverService::isElementEnabled },
{ HTTPMethod::Get, "/session/$sessionId/element/$elementId/computedrole", &WebDriverService::getComputedRole },
{ HTTPMethod::Get, "/session/$sessionId/element/$elementId/computedlabel", &WebDriverService::getComputedLabel },
{ HTTPMethod::Post, "/session/$sessionId/element/$elementId/click", &WebDriverService::elementClick },
{ HTTPMethod::Post, "/session/$sessionId/element/$elementId/clear", &WebDriverService::elementClear },
{ HTTPMethod::Post, "/session/$sessionId/element/$elementId/value", &WebDriverService::elementSendKeys },
{ HTTPMethod::Get, "/session/$sessionId/source", &WebDriverService::getPageSource },
{ HTTPMethod::Post, "/session/$sessionId/execute/sync", &WebDriverService::executeScript },
{ HTTPMethod::Post, "/session/$sessionId/execute/async", &WebDriverService::executeAsyncScript },
{ HTTPMethod::Get, "/session/$sessionId/cookie", &WebDriverService::getAllCookies },
{ HTTPMethod::Get, "/session/$sessionId/cookie/$name", &WebDriverService::getNamedCookie },
{ HTTPMethod::Post, "/session/$sessionId/cookie", &WebDriverService::addCookie },
{ HTTPMethod::Delete, "/session/$sessionId/cookie/$name", &WebDriverService::deleteCookie },
{ HTTPMethod::Delete, "/session/$sessionId/cookie", &WebDriverService::deleteAllCookies },
{ HTTPMethod::Post, "/session/$sessionId/actions", &WebDriverService::performActions },
{ HTTPMethod::Delete, "/session/$sessionId/actions", &WebDriverService::releaseActions },
{ HTTPMethod::Post, "/session/$sessionId/alert/dismiss", &WebDriverService::dismissAlert },
{ HTTPMethod::Post, "/session/$sessionId/alert/accept", &WebDriverService::acceptAlert },
{ HTTPMethod::Get, "/session/$sessionId/alert/text", &WebDriverService::getAlertText },
{ HTTPMethod::Post, "/session/$sessionId/alert/text", &WebDriverService::sendAlertText },
{ HTTPMethod::Get, "/session/$sessionId/screenshot", &WebDriverService::takeScreenshot },
{ HTTPMethod::Get, "/session/$sessionId/element/$elementId/screenshot", &WebDriverService::takeElementScreenshot },
{ HTTPMethod::Get, "/session/$sessionId/element/$elementId/displayed", &WebDriverService::isElementDisplayed },
};
#if ENABLE(WEBDRIVER_BIDI)
const WebDriverService::BidiCommand WebDriverService::s_bidiCommands[] = {
{ "session.status"_s, &WebDriverService::bidiSessionStatus },
{ "session.subscribe"_s, &WebDriverService::bidiSessionSubscribe },
{ "session.unsubscribe"_s, &WebDriverService::bidiSessionUnsubscribe },
};
#endif
std::optional<WebDriverService::HTTPMethod> WebDriverService::toCommandHTTPMethod(const String& method)
{
static constexpr std::pair<ComparableLettersLiteral, WebDriverService::HTTPMethod> httpMethodMappings[] = {
{ "delete"_s, WebDriverService::HTTPMethod::Delete },
{ "get"_s, WebDriverService::HTTPMethod::Get },
{ "post"_s, WebDriverService::HTTPMethod::Post },
{ "put"_s, WebDriverService::HTTPMethod::Post },
};
static constexpr SortedArrayMap httpMethods { httpMethodMappings };
if (auto* methodValue = httpMethods.tryGet(method))
return *methodValue;
return std::nullopt;
}
bool WebDriverService::findCommand(HTTPMethod method, const String& path, CommandHandler* handler, HashMap<String, String>& parameters)
{
size_t length = std::size(s_commands);
for (size_t i = 0; i < length; ++i) {
if (s_commands[i].method != method)
continue;
Vector<String> pathTokens = path.split('/');
Vector<String> commandTokens = String::fromUTF8(s_commands[i].uriTemplate).split('/');
if (pathTokens.size() != commandTokens.size())
continue;
bool allMatched = true;
for (size_t j = 0; j < pathTokens.size() && allMatched; ++j) {
if (commandTokens[j][0] == '$')
parameters.set(commandTokens[j].substring(1), pathTokens[j]);
else if (commandTokens[j] != pathTokens[j])
allMatched = false;
}
if (allMatched) {
*handler = s_commands[i].handler;
return true;
}
parameters.clear();
}
return false;
}
void WebDriverService::handleRequest(HTTPRequestHandler::Request&& request, Function<void (HTTPRequestHandler::Response&&)>&& replyHandler)
{
auto method = toCommandHTTPMethod(request.method);
if (!method) {
sendResponse(WTFMove(replyHandler), CommandResult::fail(CommandResult::ErrorCode::UnknownCommand, makeString("Unknown method: "_s, request.method)));
return;
}
CommandHandler handler;
HashMap<String, String> parameters;
if (!findCommand(method.value(), request.path, &handler, parameters)) {
sendResponse(WTFMove(replyHandler), CommandResult::fail(CommandResult::ErrorCode::UnknownCommand, makeString("Unknown command: "_s, request.path)));
return;
}
RefPtr<JSON::Object> parametersObject;
if (method.value() == HTTPMethod::Post) {
auto messageValue = JSON::Value::parseJSON(String::fromUTF8({ request.data, request.dataLength }));
if (!messageValue) {
sendResponse(WTFMove(replyHandler), CommandResult::fail(CommandResult::ErrorCode::InvalidArgument));
return;
}
parametersObject = messageValue->asObject();
if (!parametersObject) {
sendResponse(WTFMove(replyHandler), CommandResult::fail(CommandResult::ErrorCode::InvalidArgument));
return;
}
} else
parametersObject = JSON::Object::create();
for (const auto& parameter : parameters)
parametersObject->setString(parameter.key, parameter.value);
((*this).*handler)(WTFMove(parametersObject), [this, replyHandler = WTFMove(replyHandler)](CommandResult&& result) mutable {
sendResponse(WTFMove(replyHandler), WTFMove(result));
});
}
void WebDriverService::sendResponse(Function<void (HTTPRequestHandler::Response&&)>&& replyHandler, CommandResult&& result) const
{
// §6.3 Processing Model.
// https://w3c.github.io/webdriver/webdriver-spec.html#processing-model
RefPtr<JSON::Value> resultValue;
if (result.isError()) {
// When required to send an error.
// https://w3c.github.io/webdriver/webdriver-spec.html#dfn-send-an-error
// Let body be a new JSON Object initialised with the following properties: "error", "message", "stacktrace".
auto errorObject = JSON::Object::create();
errorObject->setString("error"_s, result.errorString());
errorObject->setString("message"_s, result.errorMessage().value_or(emptyString()));
errorObject->setString("stacktrace"_s, emptyString());
// If the error data dictionary contains any entries, set the "data" field on body to a new JSON Object populated with the dictionary.
if (auto& additionalData = result.additionalErrorData())
errorObject->setObject("data"_s, *additionalData);
// Send a response with status and body as arguments.
resultValue = WTFMove(errorObject);
} else if (auto value = result.result())
resultValue = WTFMove(value);
else
resultValue = JSON::Value::null();
// When required to send a response.
// https://w3c.github.io/webdriver/webdriver-spec.html#dfn-send-a-response
auto responseObject = JSON::Object::create();
responseObject->setValue("value"_s, resultValue.releaseNonNull());
replyHandler({ result.httpStatusCode(), responseObject->toJSONString().utf8(), "application/json; charset=utf-8"_s });
}
#if ENABLE(WEBDRIVER_BIDI)
bool WebDriverService::acceptHandshake(HTTPRequestHandler::Request&& request)
{
// https://w3c.github.io/webdriver-bidi/#transport
auto& resourceName = request.path;
auto& resources = m_bidiServer->listener()->resources;
auto foundResource = std::find(resources.begin(), resources.end(), resourceName);
if (foundResource == resources.end()) {
RELEASE_LOG(WebDriverBiDi, "Resource name %s not found in listener's list of WebSocket resources. Rejecting handshake.", resourceName.utf8().data());
return false;
}
if (*foundResource == "/session"_s) {
// FIXME Add support for bidi-only sessions
RELEASE_LOG(WebDriverBiDi, "BiDi-only sessions are not supported yet. Rejecting handshake.");
return false;
}
auto sessionID = m_bidiServer->getSessionID(resourceName);
if (sessionID.isNull()) {
RELEASE_LOG(WebDriverBiDi, "No session ID found for resource name %s. Rejecting handshake.", resourceName.utf8().data());
return false;
}
// FIXME Properly support multiple sessions in the future
if (sessionID != m_session->id()) {
RELEASE_LOG(WebDriverBiDi, "No active session found for session ID %s. Rejecting handshake.", sessionID.utf8().data());
return false;
}
return true;
}
void WebDriverService::handleMessage(WebSocketMessageHandler::Message&& message, Function<void(WebSocketMessageHandler::Message&&)>&& completionHandler)
{
// https://w3c.github.io/webdriver-bidi/#handle-an-incoming-message
if (!message.connection) {
RELEASE_LOG(WebDriverBiDi, "Incoming message without attached connection. Ignoring message.");
completionHandler(WebSocketMessageHandler::Message::fail(CommandResult::ErrorCode::UnknownError, std::nullopt));
return;
}
auto connection = message.connection;
if (m_bidiServer->sessionID(connection) != m_session->id()) {
// FIXME Remove once we support checking static vs non-static methods https://bugs.webkit.org/show_bug.cgi?id=281721
completionHandler(WebSocketMessageHandler::Message::fail(CommandResult::ErrorCode::InvalidSessionID, connection));
return;
}
auto parsedMessageValue = JSON::Value::parseJSON(String::fromUTF8(message.payload.data()));
if (!parsedMessageValue) {
RELEASE_LOG(WebDriverBiDi, "WebDriver handle Message: Failed to parse incoming message");
completionHandler(WebSocketMessageHandler::Message::fail(CommandResult::ErrorCode::InvalidArgument, message.connection));
return;
}
BidiCommandHandler handler;
unsigned id = 0;
RefPtr<JSON::Object> parameters;
if (!findBidiCommand(parsedMessageValue, &handler, id, parameters)) {
RELEASE_LOG(WebDriverBiDi, "Failed to find appropriate BiDi command");
std::optional<int> commandId;
if (auto parsedMessageObject = parsedMessageValue->asObject()) {
auto parsedCommandId = parsedMessageObject->getInteger("id"_s);
if (parsedCommandId && *parsedCommandId >= 0)
commandId = parsedCommandId;
}
auto errorCode = CommandResult::ErrorCode::UnknownCommand;
auto errorReply = WebSocketMessageHandler::Message::fail(errorCode, connection, { "Command not supported"_s }, commandId);
completionHandler(WTFMove(errorReply));
return;
}
((*this).*handler)(id, WTFMove(parameters), [completionHandler = WTFMove(completionHandler), message](WebSocketMessageHandler::Message&& resultMessage) {
// 6.7.5 If method is "session.new", let session be the entry in the list of active sessions whose session ID is equal to the "sessionId" property of value, append connection to session’s session WebSocket connections, and remove connection from the WebSocket connections not associated with a session.
// FIXME https://bugs.webkit.org/show_bug.cgi?id=281722
resultMessage.connection = message.connection;
completionHandler(WTFMove(resultMessage));
});
}
bool WebDriverService::findBidiCommand(RefPtr<JSON::Value>& parameters, BidiCommandHandler* handler, unsigned& id, RefPtr<JSON::Object>& parsedParams)
{
if (!parameters)
return false;
const auto& asObject = parameters->asObject();
if (!asObject)
return false;
std::optional<int> idOpt = asObject->getInteger("id"_s);
if (!idOpt)
return false;
const String& method = asObject->getString("method"_s);
if (!method)
return false;
auto candidate = std::find_if(std::begin(s_bidiCommands), std::end(s_bidiCommands),
[method](const BidiCommand& command) {
return method == command.method;
});
if (candidate == std::end(s_bidiCommands))
return false;
id = *idOpt;
parsedParams = asObject->getObject("params"_s);
*handler = candidate->handler;
return true;
}
#endif // ENABLE(WEBDRIVER_BIDI)
static std::optional<double> valueAsNumberInRange(const JSON::Value& value, double minAllowed = 0, double maxAllowed = std::numeric_limits<int>::max())
{
auto number = value.asDouble();
if (!number)
return std::nullopt;
if (std::isnan(*number) || std::isinf(*number))
return std::nullopt;
if (*number < minAllowed || *number > maxAllowed)
return std::nullopt;
return *number;
}
static std::optional<uint64_t> unsignedValue(JSON::Value& value)
{
auto number = valueAsNumberInRange(value, 0, maxSafeInteger);
if (!number)
return std::nullopt;
auto intValue = static_cast<uint64_t>(number.value());
// If the contained value is a double, bail in case it doesn't match the integer
// value, i.e. if the double value was not originally in integer form.
// https://w3c.github.io/webdriver/webdriver-spec.html#dfn-integer
if (number.value() != intValue)
return std::nullopt;
return intValue;
}
enum class IgnoreUnknownTimeout : bool { No, Yes };
static std::optional<Timeouts> deserializeTimeouts(JSON::Object& timeoutsObject, IgnoreUnknownTimeout ignoreUnknownTimeout)
{
// §8.5 Set Timeouts.
// https://w3c.github.io/webdriver/webdriver-spec.html#dfn-deserialize-as-a-timeout
Timeouts timeouts;
auto end = timeoutsObject.end();
for (auto it = timeoutsObject.begin(); it != end; ++it) {
if (it->key == "sessionId"_s)
continue;
if (it->key == "script"_s && it->value->isNull()) {
timeouts.script = std::numeric_limits<double>::infinity();
continue;
}
// If value is not an integer, or it is less than 0 or greater than the maximum safe integer, return error with error code invalid argument.
auto timeoutMS = unsignedValue(it->value);
if (!timeoutMS)
return std::nullopt;
if (it->key == "script"_s)
timeouts.script = timeoutMS.value();
else if (it->key == "pageLoad"_s)
timeouts.pageLoad = timeoutMS.value();
else if (it->key == "implicit"_s)
timeouts.implicit = timeoutMS.value();
else if (ignoreUnknownTimeout == IgnoreUnknownTimeout::No)
return std::nullopt;
}
return timeouts;
}
static std::optional<Proxy> deserializeProxy(JSON::Object& proxyObject)
{
// §7.1 Proxy.
// https://w3c.github.io/webdriver/#proxy
Proxy proxy;
proxy.type = proxyObject.getString("proxyType"_s);
if (!proxy.type)
return std::nullopt;
if (proxy.type == "direct"_s || proxy.type == "autodetect"_s || proxy.type == "system"_s)
return proxy;
if (proxy.type == "pac"_s) {
auto autoconfigURL = proxyObject.getString("proxyAutoconfigUrl"_s);
if (!autoconfigURL)
return std::nullopt;
proxy.autoconfigURL = URL({ }, autoconfigURL);
if (!proxy.autoconfigURL->isValid())
return std::nullopt;
return proxy;
}
if (proxy.type == "manual"_s) {
if (auto value = proxyObject.getValue("ftpProxy"_s)) {
auto ftpProxy = value->asString();
if (!ftpProxy)
return std::nullopt;
proxy.ftpURL = URL({ }, makeString("ftp://"_s, ftpProxy));
if (!proxy.ftpURL->isValid())
return std::nullopt;
}
if (auto value = proxyObject.getValue("httpProxy"_s)) {
auto httpProxy = value->asString();
if (!httpProxy)
return std::nullopt;
proxy.httpURL = URL({ }, makeString("http://"_s, httpProxy));
if (!proxy.httpURL->isValid())
return std::nullopt;
}
if (auto value = proxyObject.getValue("sslProxy"_s)) {
auto sslProxy = value->asString();
if (!sslProxy)
return std::nullopt;
proxy.httpsURL = URL({ }, makeString("https://"_s, sslProxy));
if (!proxy.httpsURL->isValid())
return std::nullopt;
}
if (auto value = proxyObject.getValue("socksProxy"_s)) {
auto socksProxy = value->asString();
if (!socksProxy)
return std::nullopt;
proxy.socksURL = URL({ }, makeString("socks://"_s, socksProxy));
if (!proxy.socksURL->isValid())
return std::nullopt;
auto socksVersionValue = proxyObject.getValue("socksVersion"_s);
if (!socksVersionValue)
return std::nullopt;
auto socksVersion = unsignedValue(*socksVersionValue);
if (!socksVersion || socksVersion.value() > 255)
return std::nullopt;
proxy.socksVersion = socksVersion.value();
}
if (auto value = proxyObject.getValue("noProxy"_s)) {
auto noProxy = value->asArray();
if (!noProxy)
return std::nullopt;
auto noProxyLength = noProxy->length();
for (unsigned i = 0; i < noProxyLength; ++i) {
auto address = noProxy->get(i)->asString();
if (!address)
return std::nullopt;
proxy.ignoreAddressList.append(address);
}
}
return proxy;
}
return std::nullopt;
}
static std::optional<PageLoadStrategy> deserializePageLoadStrategy(const String& pageLoadStrategy)
{
if (pageLoadStrategy == "none"_s)
return PageLoadStrategy::None;
if (pageLoadStrategy == "normal"_s)
return PageLoadStrategy::Normal;
if (pageLoadStrategy == "eager"_s)
return PageLoadStrategy::Eager;
return std::nullopt;
}
static std::optional<UnhandledPromptBehavior> deserializeUnhandledPromptBehavior(const String& unhandledPromptBehavior)
{
if (unhandledPromptBehavior == "dismiss"_s)
return UnhandledPromptBehavior::Dismiss;
if (unhandledPromptBehavior == "accept"_s)
return UnhandledPromptBehavior::Accept;
if (unhandledPromptBehavior == "dismiss and notify"_s)
return UnhandledPromptBehavior::DismissAndNotify;
if (unhandledPromptBehavior == "accept and notify"_s)
return UnhandledPromptBehavior::AcceptAndNotify;
if (unhandledPromptBehavior == "ignore"_s)
return UnhandledPromptBehavior::Ignore;
return std::nullopt;
}
void WebDriverService::parseCapabilities(const JSON::Object& matchedCapabilities, Capabilities& capabilities) const
{
// Matched capabilities have already been validated.
auto acceptInsecureCerts = matchedCapabilities.getBoolean("acceptInsecureCerts"_s);
if (acceptInsecureCerts)
capabilities.acceptInsecureCerts = *acceptInsecureCerts;
auto setWindowRect = matchedCapabilities.getBoolean("setWindowRect"_s);
if (setWindowRect)
capabilities.setWindowRect = *setWindowRect;
auto browserName = matchedCapabilities.getString("browserName"_s);
if (!!browserName)
capabilities.browserName = browserName;
auto browserVersion = matchedCapabilities.getString("browserVersion"_s);
if (!!browserVersion)
capabilities.browserVersion = browserVersion;
auto platformName = matchedCapabilities.getString("platformName"_s);
if (!!platformName)
capabilities.platformName = platformName;
auto proxy = matchedCapabilities.getObject("proxy"_s);
if (proxy)
capabilities.proxy = deserializeProxy(*proxy);
auto strictFileInteractability = matchedCapabilities.getBoolean("strictFileInteractability"_s);
if (strictFileInteractability)
capabilities.strictFileInteractability = *strictFileInteractability;
auto timeouts = matchedCapabilities.getObject("timeouts"_s);
if (timeouts)
capabilities.timeouts = deserializeTimeouts(*timeouts, IgnoreUnknownTimeout::No);
auto pageLoadStrategy = matchedCapabilities.getString("pageLoadStrategy"_s);
if (!!pageLoadStrategy)
capabilities.pageLoadStrategy = deserializePageLoadStrategy(pageLoadStrategy);
auto unhandledPromptBehavior = matchedCapabilities.getString("unhandledPromptBehavior"_s);
if (!!unhandledPromptBehavior)
capabilities.unhandledPromptBehavior = deserializeUnhandledPromptBehavior(unhandledPromptBehavior);
if (auto webSocketURL = matchedCapabilities.getBoolean("webSocketUrl"_s))
capabilities.webSocketURL = *webSocketURL;
platformParseCapabilities(matchedCapabilities, capabilities);
}
bool WebDriverService::findSessionOrCompleteWithError(JSON::Object& parameters, Function<void (CommandResult&&)>& completionHandler)
{
auto sessionID = parameters.getString("sessionId"_s);
if (!sessionID) {
completionHandler(CommandResult::fail(CommandResult::ErrorCode::InvalidArgument));
return false;
}
if (!m_session || m_session->id() != sessionID) {
completionHandler(CommandResult::fail(CommandResult::ErrorCode::InvalidSessionID));
return false;
}
if (!m_session->isConnected()) {
m_session = nullptr;
completionHandler(CommandResult::fail(CommandResult::ErrorCode::InvalidSessionID, String("session deleted because of page crash or hang."_s)));
return false;
}
return true;
}
RefPtr<JSON::Object> WebDriverService::validatedCapabilities(const JSON::Object& capabilities) const
{
// §7.2 Processing Capabilities.
// https://w3c.github.io/webdriver/webdriver-spec.html#dfn-validate-capabilities
auto result = JSON::Object::create();
auto end = capabilities.end();
for (auto it = capabilities.begin(); it != end; ++it) {
if (it->value->isNull())
continue;
if (it->key == "acceptInsecureCerts"_s) {
auto acceptInsecureCerts = it->value->asBoolean();
if (!acceptInsecureCerts)
return nullptr;
result->setBoolean(it->key, *acceptInsecureCerts);
} else if (it->key == "browserName"_s || it->key == "browserVersion"_s || it->key == "platformName"_s) {
auto stringValue = it->value->asString();
if (!stringValue)
return nullptr;
result->setString(it->key, stringValue);
} else if (it->key == "pageLoadStrategy"_s) {
auto pageLoadStrategy = it->value->asString();
if (!pageLoadStrategy || !deserializePageLoadStrategy(pageLoadStrategy))
return nullptr;
result->setString(it->key, pageLoadStrategy);
} else if (it->key == "proxy"_s) {
auto proxy = it->value->asObject();
if (!proxy || !deserializeProxy(*proxy))
return nullptr;
result->setValue(it->key, *proxy);
} else if (it->key == "strictFileInteractability"_s) {
auto strictFileInteractability = it->value->asBoolean();
if (!strictFileInteractability)
return nullptr;
result->setBoolean(it->key, *strictFileInteractability);
} else if (it->key == "timeouts"_s) {
auto timeouts = it->value->asObject();
if (!timeouts || !deserializeTimeouts(*timeouts, IgnoreUnknownTimeout::No))
return nullptr;
result->setValue(it->key, *timeouts);
} else if (it->key == "unhandledPromptBehavior"_s) {
auto unhandledPromptBehavior = it->value->asString();
if (!unhandledPromptBehavior || !deserializeUnhandledPromptBehavior(unhandledPromptBehavior))
return nullptr;
result->setString(it->key, unhandledPromptBehavior);
} else if (it->key.find(':') != notFound) {
if (!platformValidateCapability(it->key, it->value))
return nullptr;
result->setValue(it->key, it->value.copyRef());
} else if (it->key == "webSocketUrl"_s) {
auto webSocketURL = it->value->asBoolean();
if (!webSocketURL)
return nullptr;
result->setBoolean(it->key, *webSocketURL);
} else
return nullptr;
}
return result;
}
RefPtr<JSON::Object> WebDriverService::mergeCapabilities(const JSON::Object& requiredCapabilities, const JSON::Object& firstMatchCapabilities) const
{
// §7.2 Processing Capabilities.
// https://w3c.github.io/webdriver/webdriver-spec.html#dfn-merging-capabilities
auto result = JSON::Object::create();
auto requiredEnd = requiredCapabilities.end();
for (auto it = requiredCapabilities.begin(); it != requiredEnd; ++it)
result->setValue(it->key, it->value.copyRef());
auto firstMatchEnd = firstMatchCapabilities.end();
for (auto it = firstMatchCapabilities.begin(); it != firstMatchEnd; ++it)
result->setValue(it->key, it->value.copyRef());
return result;
}
RefPtr<JSON::Object> WebDriverService::matchCapabilities(const JSON::Object& mergedCapabilities) const
{
// §7.2 Processing Capabilities.
// https://w3c.github.io/webdriver/webdriver-spec.html#dfn-matching-capabilities
Capabilities platformCapabilities = this->platformCapabilities();
// Some capabilities like browser name and version might need to launch the browser,
// so we only reject the known capabilities that don't match.
auto matchedCapabilities = JSON::Object::create();
if (platformCapabilities.browserName)
matchedCapabilities->setString("browserName"_s, platformCapabilities.browserName.value());
if (platformCapabilities.browserVersion)
matchedCapabilities->setString("browserVersion"_s, platformCapabilities.browserVersion.value());
if (platformCapabilities.platformName)
matchedCapabilities->setString("platformName"_s, platformCapabilities.platformName.value());
if (platformCapabilities.acceptInsecureCerts)
matchedCapabilities->setBoolean("acceptInsecureCerts"_s, platformCapabilities.acceptInsecureCerts.value());
if (platformCapabilities.strictFileInteractability)
matchedCapabilities->setBoolean("strictFileInteractability"_s, platformCapabilities.strictFileInteractability.value());
if (platformCapabilities.setWindowRect)
matchedCapabilities->setBoolean("setWindowRect"_s, platformCapabilities.setWindowRect.value());
auto end = mergedCapabilities.end();
for (auto it = mergedCapabilities.begin(); it != end; ++it) {
if (it->key == "browserName"_s && platformCapabilities.browserName) {
auto browserName = it->value->asString();
if (!equalIgnoringASCIICase(platformCapabilities.browserName.value(), browserName))
return nullptr;
} else if (it->key == "browserVersion"_s && platformCapabilities.browserVersion) {
auto browserVersion = it->value->asString();
if (!platformCompareBrowserVersions(browserVersion, platformCapabilities.browserVersion.value()))
return nullptr;
} else if (it->key == "platformName"_s && platformCapabilities.platformName) {
auto platformName = it->value->asString();
if (!equalLettersIgnoringASCIICase(platformName, "any"_s) && platformCapabilities.platformName.value() != platformName)
return nullptr;
} else if (it->key == "acceptInsecureCerts"_s && platformCapabilities.acceptInsecureCerts) {
auto acceptInsecureCerts = it->value->asBoolean();
if (acceptInsecureCerts && !platformCapabilities.acceptInsecureCerts.value())
return nullptr;
} else if (it->key == "proxy"_s) {
auto proxyType = it->value->asObject()->getString("proxyType"_s);
if (!platformSupportProxyType(proxyType))
return nullptr;
} else if (it->key == "webSocketUrl"_s) {
auto webSocketURL = it->value->asBoolean();
if (webSocketURL && !platformSupportBidi())
return nullptr;
} else if (!platformMatchCapability(it->key, it->value))
return nullptr;
matchedCapabilities->setValue(it->key, it->value.copyRef());
}
return matchedCapabilities;
}
Vector<Capabilities> WebDriverService::processCapabilities(const JSON::Object& parameters, Function<void (CommandResult&&)>& completionHandler) const
{
// §7.2 Processing Capabilities.
// https://w3c.github.io/webdriver/webdriver-spec.html#processing-capabilities
// 1. Let capabilities request be the result of getting the property "capabilities" from parameters.
auto capabilitiesObject = parameters.getObject("capabilities"_s);
if (!capabilitiesObject) {
completionHandler(CommandResult::fail(CommandResult::ErrorCode::InvalidArgument));
return { };
}
// 2. Let required capabilities be the result of getting the property "alwaysMatch" from capabilities request.
RefPtr<JSON::Object> requiredCapabilities;
auto requiredCapabilitiesValue = capabilitiesObject->getValue("alwaysMatch"_s);
if (!requiredCapabilitiesValue) {
// 2.1. If required capabilities is undefined, set the value to an empty JSON Object.
requiredCapabilities = JSON::Object::create();
} else if (!(requiredCapabilities = requiredCapabilitiesValue->asObject())) {
completionHandler(CommandResult::fail(CommandResult::ErrorCode::InvalidArgument, String("alwaysMatch is invalid in capabilities"_s)));
return { };
}
// 2.2. Let required capabilities be the result of trying to validate capabilities with argument required capabilities.
requiredCapabilities = validatedCapabilities(*requiredCapabilities);
if (!requiredCapabilities) {
completionHandler(CommandResult::fail(CommandResult::ErrorCode::InvalidArgument, String("Invalid alwaysMatch capabilities"_s)));
return { };
}
// 3. Let all first match capabilities be the result of getting the property "firstMatch" from capabilities request.
RefPtr<JSON::Array> firstMatchCapabilitiesList;
auto firstMatchCapabilitiesValue = capabilitiesObject->getValue("firstMatch"_s);
if (!firstMatchCapabilitiesValue) {
// 3.1. If all first match capabilities is undefined, set the value to a JSON List with a single entry of an empty JSON Object.
firstMatchCapabilitiesList = JSON::Array::create();
firstMatchCapabilitiesList->pushObject(JSON::Object::create());
} else {
firstMatchCapabilitiesList = firstMatchCapabilitiesValue->asArray();
if (!firstMatchCapabilitiesList) {
// 3.2. If all first match capabilities is not a JSON List, return error with error code invalid argument.
completionHandler(CommandResult::fail(CommandResult::ErrorCode::InvalidArgument, String("firstMatch is invalid in capabilities"_s)));
return { };
}
}
// 4. Let validated first match capabilities be an empty JSON List.
Vector<RefPtr<JSON::Object>> validatedFirstMatchCapabilitiesList;
auto firstMatchCapabilitiesListLength = firstMatchCapabilitiesList->length();
validatedFirstMatchCapabilitiesList.reserveInitialCapacity(firstMatchCapabilitiesListLength);
// 5. For each first match capabilities corresponding to an indexed property in all first match capabilities.
for (unsigned i = 0; i < firstMatchCapabilitiesListLength; ++i) {
auto firstMatchCapabilities = firstMatchCapabilitiesList->get(i)->asObject();
if (!firstMatchCapabilities) {
completionHandler(CommandResult::fail(CommandResult::ErrorCode::InvalidArgument, String("Invalid capabilities found in firstMatch"_s)));
return { };
}
// 5.1. Let validated capabilities be the result of trying to validate capabilities with argument first match capabilities.
firstMatchCapabilities = validatedCapabilities(*firstMatchCapabilities);
if (!firstMatchCapabilities) {
completionHandler(CommandResult::fail(CommandResult::ErrorCode::InvalidArgument, String("Invalid firstMatch capabilities"_s)));
return { };
}
// Validate here that firstMatchCapabilities don't shadow alwaysMatchCapabilities.
auto requiredEnd = requiredCapabilities->end();
auto firstMatchEnd = firstMatchCapabilities->end();
for (auto it = firstMatchCapabilities->begin(); it != firstMatchEnd; ++it) {
if (requiredCapabilities->find(it->key) != requiredEnd) {
completionHandler(CommandResult::fail(CommandResult::ErrorCode::InvalidArgument,
makeString("Invalid firstMatch capabilities: key "_s, it->key, " is present in alwaysMatch"_s)));
return { };
}
}
// 5.2. Append validated capabilities to validated first match capabilities.
validatedFirstMatchCapabilitiesList.append(WTFMove(firstMatchCapabilities));
}
// 6. For each first match capabilities corresponding to an indexed property in validated first match capabilities.
Vector<Capabilities> matchedCapabilitiesList;
matchedCapabilitiesList.reserveInitialCapacity(validatedFirstMatchCapabilitiesList.size());
for (auto& validatedFirstMatchCapabilies : validatedFirstMatchCapabilitiesList) {
// 6.1. Let merged capabilities be the result of trying to merge capabilities with required capabilities and first match capabilities as arguments.
auto mergedCapabilities = mergeCapabilities(*requiredCapabilities, *validatedFirstMatchCapabilies);
// 6.2. Let matched capabilities be the result of trying to match capabilities with merged capabilities as an argument.
if (auto matchedCapabilities = matchCapabilities(*mergedCapabilities)) {
// 6.3. If matched capabilities is not null return matched capabilities.
Capabilities capabilities;