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93 lines
4.8 KiB
C++
93 lines
4.8 KiB
C++
/*
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* Copyright (c) 2023, Bastiaan van der Plaat <bastiaan.v.d.plaat@gmail.com>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibWeb/DOM/Document.h>
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#include <LibWeb/Fetch/Fetching/Fetching.h>
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#include <LibWeb/Fetch/Infrastructure/FetchAlgorithms.h>
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#include <LibWeb/HTML/Navigator.h>
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#include <LibWeb/HTML/NavigatorBeacon.h>
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#include <LibWeb/HTML/Scripting/Environments.h>
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#include <LibWeb/HTML/Window.h>
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namespace Web::HTML {
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// https://w3c.github.io/beacon/#sendbeacon-method
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WebIDL::ExceptionOr<bool> NavigatorBeaconMixin::send_beacon(String const& url, Optional<Fetch::BodyInit> const& data)
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{
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auto& navigator = verify_cast<Navigator>(*this);
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auto& realm = navigator.realm();
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auto& vm = realm.vm();
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auto& relevant_settings_object = HTML::relevant_settings_object(navigator);
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// 1. Set base to this's relevant settings object's API base URL.
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auto base_url = relevant_settings_object.api_base_url();
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// 2. Set origin to this's relevant settings object's origin.
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auto origin = relevant_settings_object.origin();
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// 3. Set parsedUrl to the result of the URL parser steps with url and base. If the algorithm returns an error, or if parsedUrl's scheme is not "http" or "https", throw a "TypeError" exception and terminate these steps.
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auto parsed_url = URL::Parser::basic_parse(url, base_url);
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if (!parsed_url.is_valid())
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return WebIDL::SimpleException { WebIDL::SimpleExceptionType::TypeError, MUST(String::formatted("Beacon URL {} is invalid.", url)) };
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if (parsed_url.scheme() != "http" && parsed_url.scheme() != "https")
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return WebIDL::SimpleException { WebIDL::SimpleExceptionType::TypeError, MUST(String::formatted("Beacon URL {} must be either http:// or https://.", url)) };
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// 4. Let headerList be an empty list.
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auto header_list = Fetch::Infrastructure::HeaderList::create(vm);
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// 5. Let corsMode be "no-cors".
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auto cors_mode = Fetch::Infrastructure::Request::Mode::NoCORS;
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// 6. If data is not null:
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JS::GCPtr<Fetch::Infrastructure::Body> transmitted_data;
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if (data.has_value()) {
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// 6.1 Set transmittedData and contentType to the result of extracting data's byte stream with the keepalive flag set.
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auto body_with_type = TRY(Fetch::extract_body(realm, data.value(), true));
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transmitted_data = body_with_type.body;
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auto& content_type = body_with_type.type;
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// 6.2 If the amount of data that can be queued to be sent by keepalive enabled requests is exceeded by the size of transmittedData (as defined in HTTP-network-or-cache fetch), set the return value to false and terminate these steps.
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// FIXME: We don't have a size limit in Fetching::fetch
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// 6.3 If contentType is not null:
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if (content_type.has_value()) {
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// Set corsMode to "cors".
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cors_mode = Fetch::Infrastructure::Request::Mode::CORS;
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// If contentType value is a CORS-safelisted request-header value for the Content-Type header, set corsMode to "no-cors".
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auto content_type_header = Fetch::Infrastructure::Header::from_string_pair("Content-Type"sv, content_type.value());
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if (Fetch::Infrastructure::is_cors_safelisted_request_header(content_type_header))
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cors_mode = Fetch::Infrastructure::Request::Mode::NoCORS;
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// Append a Content-Type header with value contentType to headerList.
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header_list->append(content_type_header);
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}
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}
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// FIXME: 7. Set the return value to true, return the sendBeacon() call, and continue to run the following steps in parallel:
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// 7.1 Let req be a new request, initialized as follows:
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auto req = Fetch::Infrastructure::Request::create(vm);
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req->set_method(MUST(ByteBuffer::copy("POST"sv.bytes()))); // method: POST
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req->set_client(&relevant_settings_object); // client: this's relevant settings object
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req->set_url_list({ parsed_url }); // url: parsedUrl
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req->set_header_list(header_list); // header list: headerList
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req->set_origin(origin); // origin: origin
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req->set_keepalive(true); // keepalive: true
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if (transmitted_data)
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req->set_body(JS::NonnullGCPtr<Fetch::Infrastructure::Body> { *transmitted_data }); // body: transmittedData
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req->set_mode(cors_mode); // mode: corsMode
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req->set_credentials_mode(Fetch::Infrastructure::Request::CredentialsMode::Include); // credentials mode: include
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req->set_initiator_type(Fetch::Infrastructure::Request::InitiatorType::Beacon); // initiator type: "beacon"
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// 7.2 Fetch req.
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(void)Fetch::Fetching::fetch(realm, req, Fetch::Infrastructure::FetchAlgorithms::create(vm, {}));
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return true;
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}
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}
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