mirror of
https://github.com/OpenVPN/openvpn3.git
synced 2024-09-20 04:02:15 +02:00
120 lines
3.4 KiB
C++
120 lines
3.4 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) 2012-2022 OpenVPN 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_HTTP_URLENCODE_H
|
|
#define OPENVPN_HTTP_URLENCODE_H
|
|
|
|
#include <string>
|
|
#include <vector>
|
|
|
|
#include <openvpn/common/exception.hpp>
|
|
#include <openvpn/common/split.hpp>
|
|
#include <openvpn/common/string.hpp>
|
|
#include <openvpn/common/hexstr.hpp>
|
|
#include <openvpn/common/unicode.hpp>
|
|
#include <openvpn/http/parseutil.hpp>
|
|
|
|
namespace openvpn::URL {
|
|
OPENVPN_EXCEPTION(url_error);
|
|
|
|
inline std::string encode(const std::string &str)
|
|
{
|
|
std::string ret;
|
|
ret.reserve(str.length() * 2); // just a guess
|
|
for (auto &c : str)
|
|
{
|
|
if (HTTP::Util::is_escaped(c))
|
|
{
|
|
ret += '%';
|
|
ret += render_hex_number((unsigned char)c, true);
|
|
}
|
|
else
|
|
ret += c;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
inline std::string decode(const std::string &encoded)
|
|
{
|
|
enum State
|
|
{
|
|
TEXT,
|
|
PERCENT,
|
|
DIGIT
|
|
};
|
|
|
|
int value = 0;
|
|
State state = TEXT;
|
|
std::string ret;
|
|
ret.reserve(encoded.size()); // just a guess
|
|
|
|
for (auto &c : encoded)
|
|
{
|
|
switch (state)
|
|
{
|
|
case TEXT:
|
|
{
|
|
if (c == '%')
|
|
state = PERCENT;
|
|
else
|
|
ret += c;
|
|
break;
|
|
}
|
|
case PERCENT:
|
|
{
|
|
const int v = parse_hex_char(c);
|
|
if (v < 0)
|
|
throw url_error(std::string("decode error after %: ") + encoded);
|
|
value = v;
|
|
state = DIGIT;
|
|
break;
|
|
}
|
|
case DIGIT:
|
|
{
|
|
const int v = parse_hex_char(c);
|
|
if (v < 0)
|
|
throw url_error(std::string("decode error after %: ") + encoded);
|
|
ret += static_cast<unsigned char>((value * 16) + v);
|
|
state = TEXT;
|
|
}
|
|
}
|
|
}
|
|
if (state != TEXT)
|
|
throw url_error(std::string("decode error: %-encoding item not closed out: ") + encoded);
|
|
if (!Unicode::is_valid_utf8(ret))
|
|
throw url_error(std::string("not UTF-8: ") + encoded);
|
|
return ret;
|
|
}
|
|
|
|
inline std::vector<std::string> decode_path(std::string path)
|
|
{
|
|
std::vector<std::string> list;
|
|
if (!path.empty() && path[0] == '/')
|
|
path = path.substr(1);
|
|
Split::by_char_void<decltype(list), NullLex, Split::NullLimit>(list, path, '/');
|
|
for (auto &i : list)
|
|
i = decode(i);
|
|
return list;
|
|
}
|
|
} // namespace openvpn::URL
|
|
|
|
#endif
|