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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_OPTIONS_SERVPUSH_H
#define OPENVPN_OPTIONS_SERVPUSH_H
#include <string>
#include <sstream>
#include <ostream>
#include <vector>
#include <utility> // for std::move
#include <openvpn/common/exception.hpp>
#include <openvpn/common/options.hpp>
#include <openvpn/common/jsonlib.hpp>
#ifdef HAVE_JSON
#include <openvpn/common/jsonhelper.hpp>
#endif
namespace openvpn {
class ServerPushList : public std::vector<std::string>
{
public:
void parse(const std::string &opt_name, const OptionList &opt)
{
const auto *push = opt.get_index_ptr(opt_name);
if (push)
{
reserve(size() + push->size());
for (auto &i : *push)
{
const Option &o = opt[i];
o.touch();
push_back(o.get(1, 512));
}
}
}
#ifdef HAVE_JSON
// Parse JSON representation of a push list.
// Each push list array element can be one of:
// 1. simple JSON string,
// 2. dictionary containing an "item" string, or
// 3. dictionary containing an "item" array of strings.
void parse(const std::string &title, const Json::Value &push_list) // push_list is JSON array
{
reserve(16); // arbitrary, just a guess
const auto &ja = json::cast_array(push_list, false, title).asArray();
for (size_t i = 0; i < ja.size(); ++i)
{
const Json::Value &jv = ja[i];
if (jv.isString())
push_back(jv.asStringRef());
else if (jv.isObject())
{
const Json::Value &ji = jv["item"];
if (ji.isString())
push_back(ji.asStringRef());
else if (ji.isArray())
{
const auto &ia = ji.asArray();
for (size_t j = 0; j < ia.size(); ++j)
{
const Json::Value &iv = ia[j];
if (iv.isString())
push_back(iv.asStringRef());
else
throw json::json_parse(json::fmt_name(i, title) + " object contains 'item' array that includes non-string element at index=" + std::to_string(j));
}
}
else
throw json::json_parse(json::fmt_name(i, title) + " object must contain 'item' string or array");
}
else
throw json::json_parse(json::fmt_name(i, title) + " must be of type string or object");
}
}
#endif
void extend(const std::vector<std::string> &other)
{
reserve(size() + other.size());
for (auto &e : other)
push_back(e);
}
// do a roundtrip to csv and back to OptionList
OptionList to_option_list() const
{
std::ostringstream os;
output_csv(os);
return OptionList::parse_from_csv_static(os.str(), nullptr);
}
void output_csv(std::ostream &os) const
{
for (auto &e : *this)
{
os << ',';
output_arg(e, os);
}
}
static void output_arg(const std::string &e, std::ostream &os)
{
const bool must_quote = (e.find_first_of(',') != std::string::npos);
Option::escape_string(os, e, must_quote);
}
};
} // namespace openvpn
#endif
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