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// 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) 2012- OpenVPN Inc.
//
// SPDX-License-Identifier: MPL-2.0 OR AGPL-3.0-only WITH openvpn3-openssl-exception
//
#ifndef OPENVPN_COMMON_ARGV_H
#define OPENVPN_COMMON_ARGV_H
#include <cstring> // memcpy
#include <string>
#include <vector>
namespace openvpn {
class Argv : public std::vector<std::string>
{
public:
Argv(const size_t capacity = 16)
{
reserve(capacity);
}
std::string to_string() const
{
std::string ret;
bool first = true;
for (const auto &s : *this)
{
if (!first)
ret += ' ';
ret += s;
first = false;
}
return ret;
}
};
class ArgvWrapper
{
public:
explicit ArgvWrapper(const std::vector<std::string> &argv)
{
size_t i;
argc = argv.size();
cargv = new char *[argc + 1];
for (i = 0; i < argc; ++i)
cargv[i] = string_alloc(argv[i]);
cargv[i] = nullptr;
}
ArgvWrapper(ArgvWrapper &&rhs) noexcept
{
argc = rhs.argc;
cargv = rhs.cargv;
rhs.argc = 0;
rhs.cargv = nullptr;
}
ArgvWrapper &operator=(ArgvWrapper &&rhs) noexcept
{
del();
argc = rhs.argc;
cargv = rhs.cargv;
rhs.argc = 0;
rhs.cargv = nullptr;
return *this;
}
~ArgvWrapper()
{
del();
}
char *const *c_argv() const noexcept
{
return cargv;
}
char **c_argv() noexcept
{
return cargv;
}
size_t c_argc() const noexcept
{
return argc;
}
private:
ArgvWrapper(const ArgvWrapper &) = delete;
ArgvWrapper &operator=(const ArgvWrapper &) = delete;
static char *string_alloc(const std::string &s)
{
const char *sdata = s.c_str();
const size_t slen = s.length();
char *ret = new char[slen + 1];
std::memcpy(ret, sdata, slen);
ret[slen] = '\0';
return ret;
}
void del()
{
for (size_t i = 0; i < argc; ++i)
delete[] cargv[i];
delete[] cargv;
}
size_t argc;
char **cargv;
};
} // namespace openvpn
#endif
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