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-rw-r--r--Libraries/LibWeb/Loader/FrameLoader.cpp296
1 files changed, 0 insertions, 296 deletions
diff --git a/Libraries/LibWeb/Loader/FrameLoader.cpp b/Libraries/LibWeb/Loader/FrameLoader.cpp
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--- a/Libraries/LibWeb/Loader/FrameLoader.cpp
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-/*
- * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * 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 THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT HOLDER OR 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 <AK/LexicalPath.h>
-#include <LibGemini/Document.h>
-#include <LibGfx/ImageDecoder.h>
-#include <LibMarkdown/Document.h>
-#include <LibWeb/DOM/Document.h>
-#include <LibWeb/DOM/ElementFactory.h>
-#include <LibWeb/DOM/Text.h>
-#include <LibWeb/HTML/HTMLIFrameElement.h>
-#include <LibWeb/HTML/Parser/HTMLDocumentParser.h>
-#include <LibWeb/Loader/FrameLoader.h>
-#include <LibWeb/Loader/ResourceLoader.h>
-#include <LibWeb/Namespace.h>
-#include <LibWeb/Page/Frame.h>
-#include <LibWeb/Page/Page.h>
-
-//#define GEMINI_DEBUG 1
-
-namespace Web {
-
-FrameLoader::FrameLoader(Frame& frame)
- : m_frame(frame)
-{
-}
-
-FrameLoader::~FrameLoader()
-{
-}
-
-static bool build_markdown_document(DOM::Document& document, const ByteBuffer& data)
-{
- auto markdown_document = Markdown::Document::parse(data);
- if (!markdown_document)
- return false;
-
- HTML::HTMLDocumentParser parser(document, markdown_document->render_to_html(), "utf-8");
- parser.run(document.url());
- return true;
-}
-
-static bool build_text_document(DOM::Document& document, const ByteBuffer& data)
-{
- auto html_element = document.create_element("html");
- document.append_child(html_element);
-
- auto head_element = document.create_element("head");
- html_element->append_child(head_element);
- auto title_element = document.create_element("title");
- head_element->append_child(title_element);
-
- auto title_text = document.create_text_node(document.url().basename());
- title_element->append_child(title_text);
-
- auto body_element = document.create_element("body");
- html_element->append_child(body_element);
-
- auto pre_element = document.create_element("pre");
- body_element->append_child(pre_element);
-
- pre_element->append_child(document.create_text_node(String::copy(data)));
- return true;
-}
-
-static bool build_image_document(DOM::Document& document, const ByteBuffer& data)
-{
- auto image_decoder = Gfx::ImageDecoder::create(data.data(), data.size());
- auto bitmap = image_decoder->bitmap();
- if (!bitmap)
- return false;
-
- auto html_element = document.create_element("html");
- document.append_child(html_element);
-
- auto head_element = document.create_element("head");
- html_element->append_child(head_element);
- auto title_element = document.create_element("title");
- head_element->append_child(title_element);
-
- auto basename = LexicalPath(document.url().path()).basename();
- auto title_text = adopt(*new DOM::Text(document, String::formatted("{} [{}x{}]", basename, bitmap->width(), bitmap->height())));
- title_element->append_child(title_text);
-
- auto body_element = document.create_element("body");
- html_element->append_child(body_element);
-
- auto image_element = document.create_element("img");
- image_element->set_attribute(HTML::AttributeNames::src, document.url().to_string());
- body_element->append_child(image_element);
-
- return true;
-}
-
-static bool build_gemini_document(DOM::Document& document, const ByteBuffer& data)
-{
- StringView gemini_data { data };
- auto gemini_document = Gemini::Document::parse(gemini_data, document.url());
- String html_data = gemini_document->render_to_html();
-
-#ifdef GEMINI_DEBUG
- dbgln("Gemini data:\n\"\"\"{}\"\"\"", gemini_data);
- dbgln("Converted to HTML:\n\"\"\"{}\"\"\"", html_data);
-#endif
-
- HTML::HTMLDocumentParser parser(document, html_data, "utf-8");
- parser.run(document.url());
- return true;
-}
-
-bool FrameLoader::parse_document(DOM::Document& document, const ByteBuffer& data)
-{
- auto& mime_type = document.content_type();
- if (mime_type == "text/html" || mime_type == "image/svg+xml") {
- HTML::HTMLDocumentParser parser(document, data, document.encoding());
- parser.run(document.url());
- return true;
- }
- if (mime_type.starts_with("image/"))
- return build_image_document(document, data);
- if (mime_type == "text/plain")
- return build_text_document(document, data);
- if (mime_type == "text/markdown")
- return build_markdown_document(document, data);
- if (mime_type == "text/gemini")
- return build_gemini_document(document, data);
-
- return false;
-}
-
-bool FrameLoader::load(const LoadRequest& request, Type type)
-{
- if (!request.is_valid()) {
- load_error_page(request.url(), "Invalid request");
- return false;
- }
-
- auto& url = request.url();
-
- set_resource(ResourceLoader::the().load_resource(Resource::Type::Generic, request));
-
- if (type == Type::Navigation) {
- if (auto* page = frame().page())
- page->client().page_did_start_loading(url);
- }
-
- if (type == Type::IFrame)
- return true;
-
- if (url.protocol() == "http" || url.protocol() == "https") {
- URL favicon_url;
- favicon_url.set_protocol(url.protocol());
- favicon_url.set_host(url.host());
- favicon_url.set_port(url.port());
- favicon_url.set_path("/favicon.ico");
-
- ResourceLoader::the().load(
- favicon_url,
- [this, favicon_url](auto data, auto&) {
- dbg() << "Favicon downloaded, " << data.size() << " bytes from " << favicon_url;
- auto decoder = Gfx::ImageDecoder::create(data.data(), data.size());
- auto bitmap = decoder->bitmap();
- if (!bitmap) {
- dbg() << "Could not decode favicon " << favicon_url;
- return;
- }
- dbg() << "Decoded favicon, " << bitmap->size();
- if (auto* page = frame().page())
- page->client().page_did_change_favicon(*bitmap);
- });
- }
-
- return true;
-}
-
-bool FrameLoader::load(const URL& url, Type type)
-{
- dbg() << "FrameLoader::load: " << url;
-
- if (!url.is_valid()) {
- load_error_page(url, "Invalid URL");
- return false;
- }
-
- LoadRequest request;
- request.set_url(url);
-
- return load(request, type);
-}
-
-void FrameLoader::load_html(const StringView& html, const URL& url)
-{
- auto document = DOM::Document::create(url);
- HTML::HTMLDocumentParser parser(document, html, "utf-8");
- parser.run(url);
- frame().set_document(&parser.document());
-}
-
-// FIXME: Use an actual templating engine (our own one when it's built, preferably
-// with a way to check these usages at compile time)
-
-void FrameLoader::load_error_page(const URL& failed_url, const String& error)
-{
- auto error_page_url = "file:///res/html/error.html";
- ResourceLoader::the().load(
- error_page_url,
- [this, failed_url, error](auto data, auto&) {
- ASSERT(!data.is_null());
-#pragma GCC diagnostic ignored "-Wformat-nonliteral"
- auto html = String::format(
- String::copy(data).characters(),
- escape_html_entities(failed_url.to_string()).characters(),
- escape_html_entities(error).characters());
-#pragma GCC diagnostic pop
- auto document = HTML::parse_html_document(html, failed_url, "utf-8");
- ASSERT(document);
- frame().set_document(document);
- },
- [](auto error) {
- dbg() << "Failed to load error page: " << error;
- ASSERT_NOT_REACHED();
- });
-}
-
-void FrameLoader::resource_did_load()
-{
- auto url = resource()->url();
-
- if (!resource()->has_encoded_data()) {
- load_error_page(url, "No data");
- return;
- }
-
- // FIXME: Also check HTTP status code before redirecting
- auto location = resource()->response_headers().get("Location");
- if (location.has_value()) {
- load(url.complete_url(location.value()), FrameLoader::Type::Navigation);
- return;
- }
-
- dbgln("I believe this content has MIME type '{}', , encoding '{}'", resource()->mime_type(), resource()->encoding());
-
- auto document = DOM::Document::create();
- document->set_url(url);
- document->set_encoding(resource()->encoding());
- document->set_content_type(resource()->mime_type());
-
- frame().set_document(document);
-
- if (!parse_document(*document, resource()->encoded_data())) {
- load_error_page(url, "Failed to parse content.");
- return;
- }
-
- if (!url.fragment().is_empty())
- frame().scroll_to_anchor(url.fragment());
-
- if (auto* host_element = frame().host_element()) {
- // FIXME: Perhaps in the future we'll have a better common base class for <frame> and <iframe>
- ASSERT(is<HTML::HTMLIFrameElement>(*host_element));
- downcast<HTML::HTMLIFrameElement>(*host_element).content_frame_did_load({});
- }
-
- if (auto* page = frame().page())
- page->client().page_did_finish_loading(url);
-}
-
-void FrameLoader::resource_did_fail()
-{
- load_error_page(resource()->url(), resource()->error());
-}
-
-}
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