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/*
* Copyright (c) 2018-2020, 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/SharedBuffer.h>
#include <LibCore/EventLoop.h>
#include <LibCore/File.h>
#include <LibProtocol/Client.h>
#include <LibProtocol/Download.h>
#include <LibWeb/ResourceLoader.h>
namespace Web {
ResourceLoader& ResourceLoader::the()
{
static ResourceLoader* s_the;
if (!s_the)
s_the = &ResourceLoader::construct().leak_ref();
return *s_the;
}
ResourceLoader::ResourceLoader()
: m_protocol_client(Protocol::Client::construct())
{
}
void ResourceLoader::load_sync(const URL& url, Function<void(const ByteBuffer&)> success_callback, Function<void(const String&)> error_callback)
{
Core::EventLoop loop;
load(
url,
[&](auto& data) {
success_callback(data);
loop.quit(0);
},
[&](auto& string) {
if (error_callback)
error_callback(string);
loop.quit(0);
});
loop.exec();
}
void ResourceLoader::load(const URL& url, Function<void(const ByteBuffer&)> success_callback, Function<void(const String&)> error_callback)
{
if (url.protocol() == "file") {
auto f = Core::File::construct();
f->set_filename(url.path());
if (!f->open(Core::IODevice::OpenMode::ReadOnly)) {
dbg() << "ResourceLoader::load: Error: " << f->error_string();
if (error_callback)
error_callback(f->error_string());
return;
}
auto data = f->read_all();
deferred_invoke([data = move(data), success_callback = move(success_callback)](auto&) {
success_callback(data);
});
return;
}
if (url.protocol() == "http") {
auto download = protocol_client().start_download(url.to_string());
if (!download) {
if (error_callback)
error_callback("Failed to initiate load");
return;
}
download->on_finish = [this, success_callback = move(success_callback), error_callback = move(error_callback)](bool success, const ByteBuffer& payload, auto) {
--m_pending_loads;
if (on_load_counter_change)
on_load_counter_change();
if (!success) {
if (error_callback)
error_callback("HTTP load failed");
return;
}
success_callback(ByteBuffer::copy(payload.data(), payload.size()));
};
++m_pending_loads;
if (on_load_counter_change)
on_load_counter_change();
return;
}
if (error_callback)
error_callback(String::format("Protocol not implemented: %s", url.protocol().characters()));
}
}
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