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Telegram/SourceFiles/mtproto/mtproto_response.cpp

@@ -0,0 +1,91 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#include "mtproto/mtproto_response.h"
+
+#include <QtCore/QRegularExpression>
+#include <QtCore/QDebug>
+
+namespace MTP {
+namespace {
+
+[[nodiscard]] MTPrpcError ParseError(const mtpBuffer &reply) {
+	auto result = MTPRpcError();
+	auto from = reply.constData();
+	return result.read(from, from + reply.size())
+		? result
+		: Error::MTPLocal("RESPONSE_PARSE_FAILED", "Error parse failed.");
+}
+
+} // namespace
+
+Error::Error(const MTPrpcError &error)
+: _code(error.c_rpc_error().verror_code().v) {
+	QString text = qs(error.c_rpc_error().verror_message());
+	static const auto Expression = QRegularExpression(
+		"^([A-Z0-9_]+)(: .*)?$",
+		(QRegularExpression::DotMatchesEverythingOption
+			| QRegularExpression::MultilineOption));
+	const auto match = Expression.match(text);
+	if (match.hasMatch()) {
+		_type = match.captured(1);
+		_description = match.captured(2).mid(2);
+	} else if (_code < 0 || _code >= 500) {
+		_type = "INTERNAL_SERVER_ERROR";
+		_description = text;
+	} else {
+		_type = "CLIENT_BAD_RPC_ERROR";
+		_description = "Bad rpc error received, text = '" + text + '\'';
+	}
+}
+
+Error::Error(const mtpBuffer &reply) : Error(ParseError(reply)) {
+}
+
+int32 Error::code() const {
+	return _code;
+}
+
+const QString &Error::type() const {
+	return _type;
+}
+
+const QString &Error::description() const {
+	return _description;
+}
+
+MTPrpcError Error::MTPLocal(
+		const QString &type,
+		const QString &description) {
+	return MTP_rpc_error(
+		MTP_int(0),
+		MTP_bytes(
+			("CLIENT_"
+				+ type
+				+ (description.length()
+					? (": " + description)
+					: QString())).toUtf8()));
+}
+
+Error Error::Local(
+		const QString &type,
+		const QString &description) {
+	return Error(MTPLocal(type, description));
+}
+
+QDebug operator<<(QDebug debug, const Error &error) {
+	return debug.nospace()
+		<< "MTP::Error("
+		<< error.code()
+		<< ", "
+		<< error.type()
+		<< ", "
+		<< error.description()
+		<< ")";
+}
+
+} // namespace MTP