Implement XEP-0448: Stateless File Sharing

This adds a file sharing manager that is capable of using multiple back
ends. Currently implemented are a normal HTTP File Upload backend and an
encrypted HTTP File Upload. Jingle File Transfer could be implemented
later.

Co-authored-by: Linus Jahn <lnj@kaidan.im>

1 files changed, 47 insertions, 0 deletions

diff --git a/src/client/QXmppUpload.h b/src/client/QXmppUpload.h
new file mode 100644
index 00000000..c948496f
--- /dev/null
+++ b/src/client/QXmppUpload.h
@@ -0,0 +1,47 @@
+// SPDX-FileCopyrightText: 2022 Jonah Brüchert <jbb@kaidan.im>
+//
+// SPDX-License-Identifier: LGPL-2.1-or-later
+
+#ifndef QXMPPUPLOAD_H
+#define QXMPPUPLOAD_H
+
+#include "QXmppBitsOfBinaryDataList.h"
+#include "QXmppError.h"
+#include "QXmppFileMetadata.h"
+#include "QXmppFileShare.h"
+#include "QXmppFileTransfer.h"
+
+#include <variant>
+
+namespace QXmpp::Private {
+using UploadResult = std::variant<std::any /* source */, QXmpp::Cancelled, QXmppError>;
+}
+
+class QXMPP_EXPORT QXmppUpload : public QXmppFileTransfer
+{
+    Q_OBJECT
+public:
+    struct FileResult
+    {
+        QXmppFileShare fileShare;
+        QXmppBitsOfBinaryDataList dataBlobs;
+    };
+
+    using Result = std::variant<FileResult, QXmpp::Cancelled, QXmppError>;
+    Q_SIGNAL void finished(QXmppUpload::Result);
+
+protected:
+    /// \cond
+    Q_SIGNAL void uploadFinished(QXmpp::Private::UploadResult);
+    /// \endcond
+
+private:
+    QXmppFileMetadata metadata;
+
+    friend class QXmppFileSharingManager;
+};
+
+Q_DECLARE_METATYPE(QXmppUpload::Result);
+Q_DECLARE_METATYPE(QXmpp::Private::UploadResult);
+
+#endif  // QXMPPUPLOAD_H