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/**
* Copyright (C) 2018-present MongoDB, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the Server Side Public License, version 1,
* as published by MongoDB, Inc.
*
* 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
* Server Side Public License for more details.
*
* You should have received a copy of the Server Side Public License
* along with this program. If not, see
* <http://www.mongodb.com/licensing/server-side-public-license>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the Server Side Public License in all respects for
* all of the code used other than as permitted herein. If you modify file(s)
* with this exception, you may extend this exception to your version of the
* file(s), but you are not obligated to do so. If you do not wish to do so,
* delete this exception statement from your version. If you delete this
* exception statement from all source files in the program, then also delete
* it in the license file.
*/
#include "mongo/platform/basic.h"
#include "mongo/util/errno_util.h"
#include <cerrno>
#include <fmt/format.h>
#include <system_error>
#ifdef _WIN32
#include <errhandlingapi.h>
#include <winsock2.h>
#endif
#ifndef _WIN32
#include <netdb.h>
#endif
namespace mongo {
using namespace fmt::literals;
#ifdef _WIN32
namespace errno_util_win32_detail {
int gle() {
return GetLastError();
}
int wsaGle() {
return WSAGetLastError();
}
} // namespace errno_util_win32_detail
#endif
class AddrInfoErrorCategory : public std::error_category {
public:
const char* name() const noexcept override {
return "getaddrinfo";
}
std::string message(int e) const override {
#ifdef _WIN32
return systemError(e).message();
#else
return gai_strerror(e);
#endif
}
};
const std::error_category& addrInfoCategory() {
static auto p = new AddrInfoErrorCategory;
return *p;
}
std::string errorMessage(std::error_code ec) {
std::string r = ec.message();
bool vague = false;
#if defined(_WIN32)
vague = (r == "unknown error"_sd);
#elif defined(_LIBCPP_VERSION)
vague = StringData{r}.startsWith("unspecified"_sd);
#endif
if (vague)
return "Unknown error {}"_format(ec.value());
return r;
}
} // namespace mongo
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