Initial QSfera import

Desktop/src/libsync/owncloudpropagator_p.h

@@ -0,0 +1,92 @@
+/*
+ * Copyright (C) by Olivier Goffart <ogoffart@owncloud.com>
+ * Copyright (C) by Klaas Freitag <freitag@owncloud.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * for more details.
+ */
+
+#pragma once
+
+#include "owncloudpropagator.h"
+#include "syncfileitem.h"
+#include "networkjobs.h"
+#include <QLoggingCategory>
+#include <QNetworkReply>
+
+namespace OCC {
+
+inline QString getEtagFromReply(QNetworkReply *reply)
+{
+    QByteArray rawEtag = reply->rawHeader("OC-ETag");
+    if (rawEtag.isEmpty()) {
+        rawEtag = reply->rawHeader("ETag");
+    }
+    return Utility::normalizeEtag(QString::fromUtf8(rawEtag));
+}
+
+/**
+ * Given an error from the network, map to a SyncFileItem::Status error
+ */
+inline SyncFileItem::Status classifyError(
+    QNetworkReply::NetworkError nerror, int httpCode, bool *anotherSyncNeeded = nullptr, const QByteArray &errorBody = QByteArray())
+{
+    Q_ASSERT(nerror != QNetworkReply::NoError); // we should only be called when there is an error
+
+    if (nerror == QNetworkReply::RemoteHostClosedError) {
+        // Sometimes server bugs lead to a connection close on certain files,
+        // that shouldn't bring the rest of the syncing to a halt.
+        return SyncFileItem::NormalError;
+    }
+
+    if (nerror > QNetworkReply::NoError && nerror <= QNetworkReply::UnknownProxyError) {
+        // network error or proxy error -> fatal
+        return SyncFileItem::FatalError;
+    }
+
+    switch (httpCode) {
+    case 423:
+        // "Locked"
+        // Should be temporary.
+        if (anotherSyncNeeded != nullptr) {
+            *anotherSyncNeeded = true;
+        }
+        return SyncFileItem::Message;
+    case 425:
+        // "Too Early"
+        // The file is currently post processed after an upload
+        // once the post processing finished we get a new etag and retry
+        return SyncFileItem::Message;
+    case 502:
+        // "Bad Gateway"
+        // Should be temporary.
+        if (anotherSyncNeeded != nullptr) {
+            *anotherSyncNeeded = true;
+        }
+        Q_FALLTHROUGH();
+    case 412:
+        // "Precondition Failed"
+        // Happens when the e-tag has changed
+        return SyncFileItem::SoftError;
+    case 503: {
+        // When the server is in maintenance mode, we want to exit the sync immediatly
+        // so that we do not flood the server with many requests
+        // BUG: This relies on a translated string and is thus unreliable.
+        //      In the future it should return a NormalError and trigger a status.php
+        //      check that detects maintenance mode reliably and will terminate the sync run.
+        auto probablyMaintenance =
+                errorBody.contains(R"(>Sabre\DAV\Exception\ServiceUnavailable<)")
+                && !errorBody.contains("Storage is temporarily not available");
+        return probablyMaintenance ? SyncFileItem::FatalError : SyncFileItem::NormalError;
+    }
+    }
+    return SyncFileItem::NormalError;
+}
+}