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https://github.com/RGBCube/serenity
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2e81990a3c
While trying to get http://lite.duckduckgo.com to work in the Browser I noticed that we kept on getting 400 (Bad Request) errors when you click the "Search" button for a request. After turning on `JOB_DEBUG` to see what headers we were sending it turned out that we were actually setting `Content-Length` twice once in LibWeb, and again when the request is handled by LibHTTP. Since LibHTTP transparently handles this now, we can avoid it in LibWeb.
142 lines
4.1 KiB
C++
142 lines
4.1 KiB
C++
/*
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* Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/StringBuilder.h>
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#include <LibWeb/DOM/Document.h>
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#include <LibWeb/HTML/BrowsingContext.h>
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#include <LibWeb/HTML/EventNames.h>
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#include <LibWeb/HTML/HTMLFormElement.h>
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#include <LibWeb/HTML/HTMLInputElement.h>
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#include <LibWeb/HTML/SubmitEvent.h>
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#include <LibWeb/Page/Page.h>
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#include <LibWeb/URL/URL.h>
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namespace Web::HTML {
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HTMLFormElement::HTMLFormElement(DOM::Document& document, QualifiedName qualified_name)
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: HTMLElement(document, move(qualified_name))
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{
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}
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HTMLFormElement::~HTMLFormElement()
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{
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}
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void HTMLFormElement::submit_form(RefPtr<HTMLElement> submitter, bool from_submit_binding)
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{
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if (cannot_navigate())
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return;
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if (action().is_null()) {
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dbgln("Unsupported form action ''");
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return;
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}
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auto effective_method = method().to_lowercase();
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if (effective_method == "dialog") {
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dbgln("Failed to submit form: Unsupported form method '{}'", method());
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return;
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}
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if (effective_method != "get" && effective_method != "post") {
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effective_method = "get";
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}
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if (!from_submit_binding) {
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if (m_firing_submission_events)
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return;
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m_firing_submission_events = true;
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// FIXME: If the submitter element's no-validate state is false...
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RefPtr<HTMLElement> submitter_button;
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if (submitter != this)
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submitter_button = submitter;
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SubmitEventInit event_init {};
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event_init.submitter = submitter_button;
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auto submit_event = SubmitEvent::create(EventNames::submit, event_init);
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submit_event->set_bubbles(true);
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submit_event->set_cancelable(true);
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bool continue_ = dispatch_event(submit_event);
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m_firing_submission_events = false;
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if (!continue_)
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return;
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// This is checked again because arbitrary JS may have run when handling submit,
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// which may have changed the result.
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if (cannot_navigate())
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return;
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}
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AK::URL url(document().parse_url(action()));
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if (!url.is_valid()) {
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dbgln("Failed to submit form: Invalid URL: {}", action());
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return;
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}
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if (url.protocol() == "file") {
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if (document().url().protocol() != "file") {
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dbgln("Failed to submit form: Security violation: {} may not submit to {}", document().url(), url);
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return;
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}
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if (effective_method != "get") {
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dbgln("Failed to submit form: Unsupported form method '{}' for URL: {}", method(), url);
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return;
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}
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} else if (url.protocol() != "http" && url.protocol() != "https") {
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dbgln("Failed to submit form: Unsupported protocol for URL: {}", url);
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return;
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}
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Vector<URL::QueryParam> parameters;
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for_each_in_inclusive_subtree_of_type<HTMLInputElement>([&](auto& input) {
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if (!input.name().is_null() && (input.type() != "submit" || &input == submitter))
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parameters.append({ input.name(), input.value() });
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return IterationDecision::Continue;
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});
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if (effective_method == "get") {
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url.set_query(url_encode(parameters, AK::URL::PercentEncodeSet::ApplicationXWWWFormUrlencoded));
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}
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LoadRequest request;
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request.set_url(url);
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if (effective_method == "post") {
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auto body = url_encode(parameters, AK::URL::PercentEncodeSet::ApplicationXWWWFormUrlencoded).to_byte_buffer();
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request.set_method("POST");
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request.set_header("Content-Type", "application/x-www-form-urlencoded");
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request.set_body(body);
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}
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if (auto* page = document().page())
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page->load(request);
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}
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void HTMLFormElement::submit()
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{
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submit_form(this, true);
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}
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void HTMLFormElement::add_associated_element(Badge<FormAssociatedElement>, HTMLElement& element)
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{
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m_associated_elements.append(element);
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}
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void HTMLFormElement::remove_associated_element(Badge<FormAssociatedElement>, HTMLElement& element)
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{
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m_associated_elements.remove_first_matching([&](auto& entry) { return entry.ptr() == &element; });
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}
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}
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