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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_HTTP_URLPARM_H
#define OPENVPN_HTTP_URLPARM_H
#include <string>
#include <sstream>
#include <vector>
#include <openvpn/common/number.hpp>
#include <openvpn/http/urlencode.hpp>
#include <openvpn/http/webexcept.hpp>
#include <openvpn/common/string.hpp>
namespace openvpn::URL {
OPENVPN_EXCEPTION(url_parameter_error);
struct Parm
{
Parm()
{
}
Parm(const std::string &name_arg, const std::string &value_arg)
: name(name_arg), value(value_arg)
{
}
std::string to_string() const
{
std::ostringstream out;
out << name << '=' << value;
return out.str();
}
std::string name;
std::string value;
};
class ParmList : public std::vector<Parm>
{
public:
ParmList(const std::string &uri)
{
try
{
const std::vector<std::string> req_parms = string::split(uri, '?', 1);
request_ = req_parms[0];
if (req_parms.size() == 2)
{
const std::vector<std::string> kv_list = string::split(req_parms[1], '&');
for (auto &kvstr : kv_list)
{
const std::vector<std::string> kv = string::split(kvstr, '=', 1);
Parm p;
p.name = decode(kv[0]);
if (kv.size() == 2)
p.value = decode(kv[1]);
push_back(std::move(p));
}
}
}
catch (const std::exception &e)
{
throw HTTP::WebException(HTTP::Status::BadRequest, e.what());
}
}
const Parm *get(const std::string &key) const
{
for (auto &p : *this)
{
if (key == p.name)
return &p;
}
return nullptr;
}
std::string get_value(const std::string &key) const
{
const Parm *p = get(key);
if (p)
return p->value;
else
return "";
}
const std::string &get_value_required(const std::string &key) const
{
const Parm *p = get(key);
if (p)
return p->value;
else
throw url_parameter_error(key + " : not found");
}
template <typename T>
T get_num(const std::string &name, const std::string &short_name, const T default_value) const
{
const Parm *p = get(name);
if (!p && !short_name.empty())
p = get(short_name);
if (p)
return parse_number_throw<T>(p->value, name);
else
return default_value;
}
template <typename T>
T get_num_required(const std::string &name, const std::string &short_name) const
{
const Parm *p = get(name);
if (!p && !short_name.empty())
p = get(short_name);
if (!p)
throw url_parameter_error(name + " : not found");
return parse_number_throw<T>(p->value, name);
}
bool get_bool(const std::string &name, const std::string &short_name, const bool default_value) const
{
const Parm *p = get(name);
if (!p && !short_name.empty())
p = get(short_name);
if (p)
{
if (p->value == "0")
return false;
else if (p->value == "1")
return true;
else
throw url_parameter_error(name + ": parameter must be 0 or 1");
}
else
return default_value;
}
std::string get_string(const std::string &name, const std::string &short_name) const
{
const Parm *p = get(name);
if (!p && !short_name.empty())
p = get(short_name);
if (p)
return p->value;
else
return "";
}
std::string get_string_required(const std::string &name, const std::string &short_name) const
{
const Parm *p = get(name);
if (!p && !short_name.empty())
p = get(short_name);
if (!p)
throw url_parameter_error(name + " : not found");
return p->value;
}
std::string to_string() const
{
std::ostringstream out;
for (size_t i = 0; i < size(); ++i)
out << '[' << i << "] " << (*this)[i].to_string() << std::endl;
return out.str();
}
std::string request(const bool remove_leading_slash) const
{
std::string ret = request_;
if (remove_leading_slash)
{
if (ret.length() > 0 && ret[0] == '/')
ret = ret.substr(1);
else
throw HTTP::WebException(HTTP::Status::BadRequest, "URI missing leading slash");
}
if (ret.empty())
throw HTTP::WebException(HTTP::Status::BadRequest, "URI resource is empty");
return ret;
}
const std::string &request() const
{
return request_;
}
private:
std::string request_;
};
} // namespace openvpn::URL
#endif
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