mirror of
https://github.com/OpenVPN/openvpn3.git
synced 2024-09-20 20:13:05 +02:00
306f9f1951
and into a new source file openvpn/common/argv.hpp
134 lines
2.9 KiB
C++
134 lines
2.9 KiB
C++
// OpenVPN -- An application to securely tunnel IP networks
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// over a single port, with support for SSL/TLS-based
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// session authentication and key exchange,
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// packet encryption, packet authentication, and
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// packet compression.
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//
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// Copyright (C) 2012-2015 OpenVPN Technologies, Inc.
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License Version 3
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// as published by the Free Software Foundation.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program in the COPYING file.
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// If not, see <http://www.gnu.org/licenses/>.
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#ifndef OPENVPN_COMMON_ARGV_H
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#define OPENVPN_COMMON_ARGV_H
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#include <cstring> // memcpy
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#include <string>
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#include <vector>
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namespace openvpn {
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class Argv : public std::vector<std::string>
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{
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public:
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Argv(const size_t capacity=16)
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{
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reserve(capacity);
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}
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std::string to_string() const
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{
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std::string ret;
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bool first = true;
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for (const auto &s : *this)
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{
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if (!first)
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ret += ' ';
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ret += s;
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first = false;
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}
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return ret;
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}
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};
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class ArgvWrapper
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{
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public:
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explicit ArgvWrapper(const std::vector<std::string>& argv)
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{
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size_t i;
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argc = argv.size();
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cargv = new char *[argc+1];
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for (i = 0; i < argc; ++i)
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cargv[i] = string_alloc(argv[i]);
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cargv[i] = nullptr;
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}
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ArgvWrapper(ArgvWrapper&& rhs) noexcept
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{
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argc = rhs.argc;
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cargv = rhs.cargv;
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rhs.argc = 0;
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rhs.cargv = nullptr;
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}
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ArgvWrapper& operator=(ArgvWrapper&& rhs) noexcept
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{
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del();
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argc = rhs.argc;
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cargv = rhs.cargv;
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rhs.argc = 0;
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rhs.cargv = nullptr;
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return *this;
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}
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~ArgvWrapper()
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{
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del();
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}
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char *const *c_argv() const noexcept
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{
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return cargv;
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}
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char **c_argv() noexcept
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{
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return cargv;
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}
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size_t c_argc() const noexcept
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{
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return argc;
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}
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private:
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ArgvWrapper(const ArgvWrapper&) = delete;
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ArgvWrapper& operator=(const ArgvWrapper&) = delete;
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static char *string_alloc(const std::string& s)
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{
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const char *sdata = s.c_str();
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const size_t slen = s.length();
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char *ret = new char[slen+1];
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std::memcpy(ret, sdata, slen);
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ret[slen] = '\0';
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return ret;
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}
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void del()
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{
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for (size_t i = 0; i < argc; ++i)
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delete [] cargv[i];
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delete [] cargv;
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}
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size_t argc;
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char **cargv;
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};
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}
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#endif
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