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openvpn3/openvpn/error/excode.hpp
2014-07-20 21:22:06 -06:00

92 lines
2.5 KiB
C++

// OpenVPN -- An application to securely tunnel IP networks
// over a single port, with support for SSL/TLS-based
// session authentication and key exchange,
// packet encryption, packet authentication, and
// packet compression.
//
// Copyright (C) 2013-2014 OpenVPN Technologies, Inc.
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License Version 3
// as published by the Free Software Foundation.
//
// 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 Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program in the COPYING file.
// If not, see <http://www.gnu.org/licenses/>.
#ifndef OPENVPN_ERROR_EXCODE_H
#define OPENVPN_ERROR_EXCODE_H
#include <string>
#include <exception>
#include <openvpn/error/error.hpp>
namespace openvpn {
// Define an exception object that allows an Error::Type code to be thrown
class ExceptionCode : public std::exception
{
enum {
FATAL_FLAG = 0x80000000
};
public:
ExceptionCode()
: code_(0) {}
ExceptionCode(const Error::Type code)
: code_(code) {}
ExceptionCode(const Error::Type code, const bool fatal)
: code_(mkcode(code, fatal)) {}
void set_code(const Error::Type code)
{
code_ = code;
}
void set_code(const Error::Type code, const bool fatal)
{
code_ = mkcode(code, fatal);
}
Error::Type code() const { return Error::Type(code_ & ~FATAL_FLAG); }
bool fatal() const { return (code_ & FATAL_FLAG) != 0; }
bool code_defined() const { return code_ != 0; }
virtual ~ExceptionCode() throw() {}
private:
static unsigned int mkcode(const Error::Type code, const bool fatal)
{
unsigned int ret = code;
if (fatal)
ret |= FATAL_FLAG;
return ret;
}
unsigned int code_;
};
class ErrorCode : public ExceptionCode
{
public:
ErrorCode(const Error::Type code, const bool fatal, const std::string& err)
: ExceptionCode(code, fatal) , err_(err) {}
virtual const char* what() const throw() { return err_.c_str(); }
virtual ~ErrorCode() throw() {}
private:
std::string err_;
};
}
#endif