NOISSUE Flatten gui and logic libraries into MultiMC

launcher/net/ChecksumValidator.h

@@ -0,0 +1,55 @@
+#pragma once
+
+#include "Validator.h"
+#include <QCryptographicHash>
+#include <memory>
+#include <QFile>
+
+namespace Net {
+class ChecksumValidator: public Validator
+{
+public: /* con/des */
+    ChecksumValidator(QCryptographicHash::Algorithm algorithm, QByteArray expected = QByteArray())
+        :m_checksum(algorithm), m_expected(expected)
+    {
+    };
+    virtual ~ChecksumValidator() {};
+
+public: /* methods */
+    bool init(QNetworkRequest &) override
+    {
+        m_checksum.reset();
+        return true;
+    }
+    bool write(QByteArray & data) override
+    {
+        m_checksum.addData(data);
+        return true;
+    }
+    bool abort() override
+    {
+        return true;
+    }
+    bool validate(QNetworkReply &) override
+    {
+        if(m_expected.size() && m_expected != hash())
+        {
+            qWarning() << "Checksum mismatch, download is bad.";
+            return false;
+        }
+        return true;
+    }
+    QByteArray hash()
+    {
+        return m_checksum.result();
+    }
+    void setExpected(QByteArray expected)
+    {
+        m_expected = expected;
+    }
+
+private: /* data */
+    QCryptographicHash m_checksum;
+    QByteArray m_expected;
+};
+}