Initial commit

backends/cloud/onedrive/onedrivetokenrefresher.cpp

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+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * 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 3 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "backends/cloud/onedrive/onedrivetokenrefresher.h"
+#include "backends/cloud/onedrive/onedrivestorage.h"
+#include "backends/networking/http/networkreadstream.h"
+#include "common/debug.h"
+#include "common/formats/json.h"
+
+namespace Cloud {
+namespace OneDrive {
+
+OneDriveTokenRefresher::OneDriveTokenRefresher(OneDriveStorage *parent, Networking::JsonCallback callback, Networking::ErrorCallback ecb, const char *url):
+	HttpJsonRequest(callback, ecb, url), _parentStorage(parent) {}
+
+OneDriveTokenRefresher::~OneDriveTokenRefresher() {}
+
+void OneDriveTokenRefresher::tokenRefreshed(const Storage::BoolResponse &response) {
+	if (!response.value) {
+		//failed to refresh token, notify user with NULL in original callback
+		warning("OneDriveTokenRefresher: failed to refresh token");
+		finishError(Networking::ErrorResponse(this, false, true, "OneDriveTokenRefresher::tokenRefreshed: failed to refresh token", -1));
+		return;
+	}
+
+	//update headers: first change header with token, then pass those to request
+	for (uint32 i = 0; i < _headersList.size(); ++i) {
+		if (_headersList[i].contains("Authorization")) {
+			_headersList[i] = "Authorization: bearer " + _parentStorage->accessToken();
+		}
+	}
+
+	//successfully received refreshed token, can restart the original request now
+	retry(0);
+}
+
+void OneDriveTokenRefresher::finishJson(const Common::JSONValue *json) {
+	if (!json) {
+		//that's probably not an error (200 OK)
+		HttpJsonRequest::finishJson(nullptr);
+		return;
+	}
+
+	if (jsonIsObject(json, "OneDriveTokenRefresher")) {
+		Common::JSONObject result = json->asObject();
+		long httpResponseCode = -1;
+		if (result.contains("error") && jsonIsObject(result.getVal("error"), "OneDriveTokenRefresher")) {
+			//new token needed => request token & then retry original request
+			if (_stream) {
+				httpResponseCode = _stream->httpResponseCode();
+				debug(9, "OneDriveTokenRefresher: code = %ld", httpResponseCode);
+			}
+
+			Common::JSONObject error = result.getVal("error")->asObject();
+			bool irrecoverable = true;
+
+			Common::String code, message;
+			if (jsonContainsString(error, "code", "OneDriveTokenRefresher")) {
+				code = error.getVal("code")->asString();
+				debug(9, "OneDriveTokenRefresher: code = %s", code.c_str());
+			}
+
+			if (jsonContainsString(error, "message", "OneDriveTokenRefresher")) {
+				message = error.getVal("message")->asString();
+				debug(9, "OneDriveTokenRefresher: message = %s", message.c_str());
+			}
+
+			//determine whether token refreshing would help in this situation
+			if (code == "itemNotFound") {
+				if (message.contains("application ID"))
+					irrecoverable = false;
+			}
+
+			if (code == "unauthenticated" || code == "InvalidAuthenticationToken")
+				irrecoverable = false;
+
+			if (irrecoverable) {
+				Common::String errorContents = json->stringify(true);
+				finishErrorIrrecoverable(Networking::ErrorResponse(this, false, true, errorContents, httpResponseCode));
+				delete json;
+				return;
+			}
+
+			pause();
+			delete json;
+			_parentStorage->refreshAccessToken(new Common::Callback<OneDriveTokenRefresher, const Storage::BoolResponse &>(this, &OneDriveTokenRefresher::tokenRefreshed));
+			return;
+		}
+	}
+
+	//notify user of success
+	HttpJsonRequest::finishJson(json);
+}
+
+void OneDriveTokenRefresher::finishError(const Networking::ErrorResponse &error, Networking::RequestState state) {
+	if (error.failed) {
+		Common::JSONValue *value = Common::JSON::parse(error.response);
+
+		//somehow OneDrive returns JSON with '.' in unexpected places, try fixing it
+		if (!value) {
+			Common::String fixedResponse = error.response;
+			for (uint32 i = 0; i < fixedResponse.size(); ++i) {
+				if (fixedResponse[i] == '.')
+					fixedResponse.replace(i, 1, " ");
+			}
+			value = Common::JSON::parse(fixedResponse);
+		}
+
+		if (value) {
+			finishJson(value);
+			return;
+		}
+	}
+
+	Request::finishError(error, state); //call closest base class's method
+}
+
+void OneDriveTokenRefresher::finishErrorIrrecoverable(const Networking::ErrorResponse &error, Networking::RequestState state) {
+	// don't try to fix JSON as this is irrecoverable version
+	Request::finishError(error, state); // call closest base class's method
+}
+
+} // End of namespace OneDrive
+} // End of namespace Cloud