1 files changed, 118 insertions, 0 deletions
diff --git a/logic/minecraft/forge/ForgeMirrors.cpp b/logic/minecraft/forge/ForgeMirrors.cpp
new file mode 100644
index 00000000..a2fc2c62
--- /dev/null
+++ b/logic/minecraft/forge/ForgeMirrors.cpp
@@ -0,0 +1,118 @@
+#include "Env.h"
+#include "ForgeMirrors.h"
+#include <QDebug>
+#include <algorithm>
+#include <random>
+
+ForgeMirrors::ForgeMirrors(QList<ForgeXzDownloadPtr> &libs, NetJobPtr parent_job,
+						   QString mirrorlist)
+{
+	m_libs = libs;
+	m_parent_job = parent_job;
+	m_url = QUrl(mirrorlist);
+	m_status = Job_NotStarted;
+}
+
+void ForgeMirrors::start()
+{
+	qDebug() << "Downloading " << m_url.toString();
+	QNetworkRequest request(m_url);
+	request.setHeader(QNetworkRequest::UserAgentHeader, "MultiMC/5.0 (Uncached)");
+	auto worker = ENV.qnam();
+	QNetworkReply *rep = worker->get(request);
+
+	m_reply.reset(rep);
+	connect(rep, SIGNAL(downloadProgress(qint64, qint64)),
+			SLOT(downloadProgress(qint64, qint64)));
+	connect(rep, SIGNAL(finished()), SLOT(downloadFinished()));
+	connect(rep, SIGNAL(error(QNetworkReply::NetworkError)),
+			SLOT(downloadError(QNetworkReply::NetworkError)));
+	connect(rep, SIGNAL(readyRead()), SLOT(downloadReadyRead()));
+}
+
+void ForgeMirrors::downloadError(QNetworkReply::NetworkError error)
+{
+	// error happened during download.
+	qCritical() << "Error getting URL:" << m_url.toString().toLocal8Bit()
+				 << "Network error: " << error;
+	m_status = Job_Failed;
+}
+
+void ForgeMirrors::downloadFinished()
+{
+	// if the download succeeded
+	if (m_status != Job_Failed)
+	{
+		// nothing went wrong... ?
+		parseMirrorList();
+		return;
+	}
+	// else the download failed, we use a fixed list
+	else
+	{
+		m_status = Job_Finished;
+		m_reply.reset();
+		deferToFixedList();
+		return;
+	}
+}
+
+void ForgeMirrors::deferToFixedList()
+{
+	m_mirrors.clear();
+	m_mirrors.append(
+		{"Minecraft Forge",				  "http://files.minecraftforge.net/forge_logo.png",
+		 "http://files.minecraftforge.net/", "http://files.minecraftforge.net/maven/"});
+	m_mirrors.append({"Creeper Host",
+					  "http://files.minecraftforge.net/forge_logo.png",
+					  "https://www.creeperhost.net/link.php?id=1",
+					  "http://new.creeperrepo.net/forge/maven/"});
+	injectDownloads();
+	emit succeeded(m_index_within_job);
+}
+
+void ForgeMirrors::parseMirrorList()
+{
+	m_status = Job_Finished;
+	auto data = m_reply->readAll();
+	m_reply.reset();
+	auto dataLines = data.split('\n');
+	for(auto line: dataLines)
+	{
+		auto elements = line.split('!');
+		if (elements.size() == 4)
+		{
+			m_mirrors.append({elements[0],elements[1],elements[2],elements[3]});
+		}
+	}
+	if(!m_mirrors.size())
+		deferToFixedList();
+	injectDownloads();
+	emit succeeded(m_index_within_job);
+}
+
+void ForgeMirrors::injectDownloads()
+{
+	// shuffle the mirrors randomly
+	std::random_device rd;
+	std::mt19937 rng(rd());
+	std::shuffle(m_mirrors.begin(), m_mirrors.end(), rng);
+
+	// tell parent to download the libs
+	for(auto lib: m_libs)
+	{
+		lib->setMirrors(m_mirrors);
+		m_parent_job->addNetAction(lib);
+	}
+}
+
+void ForgeMirrors::downloadProgress(qint64 bytesReceived, qint64 bytesTotal)
+{
+	m_total_progress = bytesTotal;
+	m_progress = bytesReceived;
+	emit netActionProgress(m_index_within_job, bytesReceived, bytesTotal);
+}
+
+void ForgeMirrors::downloadReadyRead()
+{
+}