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https://github.com/RGBCube/serenity
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9f64424661
Problem: - `HttpDownload()` and `HttpsDownload()` implementations are the same except for types and certificates. Solution: - Follow the "Don't Repeat Yourself" mantra and de-duplicate the code using templates.
103 lines
4 KiB
C++
103 lines
4 KiB
C++
/*
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* Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include <AK/ByteBuffer.h>
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#include <AK/HashMap.h>
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#include <AK/NonnullOwnPtr.h>
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#include <AK/Optional.h>
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#include <AK/OwnPtr.h>
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#include <AK/String.h>
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#include <AK/Types.h>
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#include <LibHTTP/HttpRequest.h>
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#include <ProtocolServer/ClientConnection.h>
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#include <ProtocolServer/Download.h>
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namespace ProtocolServer::Detail {
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template<typename TSelf, typename TJob>
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void init(TSelf* self, TJob job)
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{
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job->on_headers_received = [&](auto& headers, auto response_code) {
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if (response_code.has_value())
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self->set_status_code(response_code.value());
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self->set_response_headers(headers);
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};
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job->on_finish = [&](bool success) {
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if (auto* response = job->response()) {
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self->set_status_code(response->code());
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self->set_response_headers(response->headers());
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self->set_downloaded_size(self->output_stream().size());
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}
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// if we didn't know the total size, pretend that the download finished successfully
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// and set the total size to the downloaded size
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if (!self->total_size().has_value())
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self->did_progress(self->downloaded_size(), self->downloaded_size());
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self->did_finish(success);
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};
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job->on_progress = [&](Optional<u32> total, u32 current) {
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self->did_progress(total, current);
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};
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if constexpr (requires { job->on_certificate_requested; }) {
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job->on_certificate_requested = [&](auto&) {
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self->did_request_certificates();
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};
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}
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}
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template<typename TBadgedProtocol, typename TPipeResult>
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OwnPtr<Download> start_download(TBadgedProtocol&& protocol, ClientConnection& client, const String& method, const URL& url, const HashMap<String, String>& headers, ReadonlyBytes body, TPipeResult&& pipe_result)
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{
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using TJob = TBadgedProtocol::Type::JobType;
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using TDownload = TBadgedProtocol::Type::DownloadType;
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if (pipe_result.is_error()) {
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return {};
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}
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HTTP::HttpRequest request;
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if (method.equals_ignoring_case("post"))
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request.set_method(HTTP::HttpRequest::Method::POST);
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else
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request.set_method(HTTP::HttpRequest::Method::GET);
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request.set_url(url);
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request.set_headers(headers);
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request.set_body(body);
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auto output_stream = make<OutputFileStream>(pipe_result.value().write_fd);
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output_stream->make_unbuffered();
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auto job = TJob::construct(request, *output_stream);
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auto download = TDownload::create_with_job(forward<TBadgedProtocol>(protocol), client, (TJob&)*job, move(output_stream));
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download->set_download_fd(pipe_result.value().read_fd);
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job->start();
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return download;
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}
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}
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