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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/Badge.h>
#include <RequestServer/ClientConnection.h>
#include <RequestServer/Protocol.h>
#include <RequestServer/Request.h>
#include <RequestServer/RequestClientEndpoint.h>
#include <netdb.h>
namespace RequestServer {
static HashMap<int, RefPtr<ClientConnection>> s_connections;
ClientConnection::ClientConnection(NonnullRefPtr<Core::LocalSocket> socket)
: IPC::ClientConnection<RequestClientEndpoint, RequestServerEndpoint>(*this, move(socket), 1)
{
s_connections.set(1, *this);
}
ClientConnection::~ClientConnection()
{
}
void ClientConnection::die()
{
s_connections.remove(client_id());
if (s_connections.is_empty())
Core::EventLoop::current().quit(0);
}
Messages::RequestServer::IsSupportedProtocolResponse ClientConnection::is_supported_protocol(String const& protocol)
{
bool supported = Protocol::find_by_name(protocol.to_lowercase());
return supported;
}
Messages::RequestServer::StartRequestResponse ClientConnection::start_request(String const& method, URL const& url, IPC::Dictionary const& request_headers, ByteBuffer const& request_body)
{
if (!url.is_valid()) {
dbgln("StartRequest: Invalid URL requested: '{}'", url);
return { -1, Optional<IPC::File> {} };
}
auto* protocol = Protocol::find_by_name(url.protocol());
if (!protocol) {
dbgln("StartRequest: No protocol handler for URL: '{}'", url);
return { -1, Optional<IPC::File> {} };
}
auto request = protocol->start_request(*this, method, url, request_headers.entries(), request_body);
if (!request) {
dbgln("StartRequest: Protocol handler failed to start request: '{}'", url);
return { -1, Optional<IPC::File> {} };
}
auto id = request->id();
auto fd = request->request_fd();
m_requests.set(id, move(request));
return { id, IPC::File(fd, IPC::File::CloseAfterSending) };
}
Messages::RequestServer::StopRequestResponse ClientConnection::stop_request(i32 request_id)
{
auto* request = const_cast<Request*>(m_requests.get(request_id).value_or(nullptr));
bool success = false;
if (request) {
request->stop();
m_requests.remove(request_id);
success = true;
}
return success;
}
void ClientConnection::did_receive_headers(Badge<Request>, Request& request)
{
IPC::Dictionary response_headers;
for (auto& it : request.response_headers())
response_headers.add(it.key, it.value);
async_headers_became_available(request.id(), move(response_headers), request.status_code());
}
void ClientConnection::did_finish_request(Badge<Request>, Request& request, bool success)
{
VERIFY(request.total_size().has_value());
async_request_finished(request.id(), success, request.total_size().value());
m_requests.remove(request.id());
}
void ClientConnection::did_progress_request(Badge<Request>, Request& request)
{
async_request_progress(request.id(), request.total_size(), request.downloaded_size());
}
void ClientConnection::did_request_certificates(Badge<Request>, Request& request)
{
async_certificate_requested(request.id());
}
Messages::RequestServer::SetCertificateResponse ClientConnection::set_certificate(i32 request_id, String const& certificate, String const& key)
{
auto* request = const_cast<Request*>(m_requests.get(request_id).value_or(nullptr));
bool success = false;
if (request) {
request->set_certificate(certificate, key);
success = true;
}
return success;
}
void ClientConnection::ensure_connection(URL const& url, ::RequestServer::CacheLevel const& cache_level)
{
if (!url.is_valid()) {
dbgln("EnsureConnection: Invalid URL requested: '{}'", url);
return;
}
if (cache_level == CacheLevel::ResolveOnly) {
return Core::deferred_invoke([host = url.host()] {
dbgln("EnsureConnection: DNS-preload for {}", host);
(void)gethostbyname(host.characters());
});
}
struct {
URL const& m_url;
void start(NonnullRefPtr<Core::Socket> socket)
{
auto is_tls = is<TLS::TLSv12>(*socket);
auto* tls_instance = is_tls ? static_cast<TLS::TLSv12*>(socket.ptr()) : nullptr;
auto is_connected = false;
if (is_tls && tls_instance->is_established())
is_connected = true;
if (!is_tls && socket->is_connected())
is_connected = true;
VERIFY(!is_connected);
bool did_connect;
if (is_tls) {
tls_instance->set_root_certificates(DefaultRootCACertificates::the().certificates());
tls_instance->on_tls_connected = [socket = socket.ptr(), url = m_url, tls_instance] {
tls_instance->set_on_tls_ready_to_write([socket, url](auto&) {
ConnectionCache::request_did_finish(url, socket);
});
};
tls_instance->on_tls_error = [socket = socket.ptr(), url = m_url](auto) {
ConnectionCache::request_did_finish(url, socket);
};
did_connect = tls_instance->connect(m_url.host(), m_url.port_or_default());
} else {
socket->on_connected = [socket = socket.ptr(), url = m_url]() mutable {
ConnectionCache::request_did_finish(url, socket);
};
did_connect = socket->connect(m_url.host(), m_url.port_or_default());
}
if (!did_connect)
ConnectionCache::request_did_finish(m_url, socket);
}
} job { url };
dbgln("EnsureConnection: Pre-connect to {}", url);
auto do_preconnect = [&](auto& cache) {
auto it = cache.find({ url.host(), url.port_or_default() });
if (it == cache.end() || it->value->is_empty())
ConnectionCache::get_or_create_connection(cache, url, job);
};
if (url.scheme() == "http"sv)
do_preconnect(ConnectionCache::g_tcp_connection_cache);
else if (url.scheme() == "https"sv)
do_preconnect(ConnectionCache::g_tls_connection_cache);
else
dbgln("EnsureConnection: Invalid URL scheme: '{}'", url.scheme());
}
}
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