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// Copyright (c) 2020, The Monero Project
//
// 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.
//
// 3. Neither the name of the copyright holder nor the names of its contributors may be
// used to endorse or promote products derived from this software without specific
// prior written permission.
//
// 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 "network.h"
#include <QDebug>
#include <QtCore>
#include "utils.h"
using epee::net_utils::http::fields_list;
using epee::net_utils::http::http_response_info;
using epee::net_utils::http::http_simple_client;
HttpClient::HttpClient(QObject *parent /* = nullptr */)
: QObject(parent)
, m_cancel(false)
, m_contentLength(0)
, m_received(0)
{
}
void HttpClient::cancel()
{
m_cancel = true;
}
quint64 HttpClient::contentLength() const
{
return m_contentLength;
}
quint64 HttpClient::received() const
{
return m_received;
}
bool HttpClient::on_header(const http_response_info &headers)
{
if (m_cancel.exchange(false))
{
return false;
}
size_t contentLength = 0;
if (!epee::string_tools::get_xtype_from_string(contentLength, headers.m_header_info.m_content_length))
{
qWarning() << "Failed to get Content-Length";
}
m_contentLength = contentLength;
emit contentLengthChanged();
m_received = 0;
emit receivedChanged();
return http_simple_client::on_header(headers);
}
bool HttpClient::handle_target_data(std::string &piece_of_transfer)
{
if (m_cancel.exchange(false))
{
return false;
}
m_received += piece_of_transfer.size();
emit receivedChanged();
return http_simple_client::handle_target_data(piece_of_transfer);
}
Network::Network(QObject *parent)
: QObject(parent)
, m_scheduler(this)
{
}
void Network::get(const QString &url, const QJSValue &callback, const QString &contentType /* = {} */) const
{
m_scheduler.run(
[this, url, contentType] {
std::string response;
std::shared_ptr<http_simple_client> httpClient(new http_simple_client());
QString error = get(httpClient, url, response, contentType);
return QJSValueList({url, QString::fromStdString(response), error});
},
callback);
}
void Network::getJSON(const QString &url, const QJSValue &callback) const
{
get(url, callback, "application/json; charset=utf-8");
}
std::string Network::get(const QString &url, const QString &contentType /* = {} */) const
{
std::string response;
QString error = get(std::shared_ptr<http_simple_client>(new http_simple_client()), url, response, contentType);
if (!error.isEmpty())
{
throw std::runtime_error(QString("failed to fetch %1: %2").arg(url).arg(error).toStdString());
}
return response;
}
QString Network::get(
std::shared_ptr<http_simple_client> httpClient,
const QString &url,
std::string &response,
const QString &contentType /* = {} */) const
{
const QUrl urlParsed(url);
httpClient->set_server(urlParsed.host().toStdString(), urlParsed.scheme() == "https" ? "443" : "80", {});
const QString uri = (urlParsed.hasQuery() ? urlParsed.path() + "?" + urlParsed.query() : urlParsed.path());
const http_response_info *pri = NULL;
constexpr std::chrono::milliseconds timeout = std::chrono::seconds(15);
fields_list headers({{"User-Agent", randomUserAgent().toStdString()}});
if (!contentType.isEmpty())
{
headers.push_back({"Content-Type", contentType.toStdString()});
}
const bool result = httpClient->invoke(uri.toStdString(), "GET", {}, timeout, std::addressof(pri), headers);
if (!result)
{
return "unknown error";
}
if (!pri)
{
return "internal error";
}
if (pri->m_response_code != 200)
{
return QString("response code %1").arg(pri->m_response_code);
}
response = std::move(pri->m_body);
return {};
}
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