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/*
* This file is part of PowerDNS or dnsdist.
* Copyright -- PowerDNS.COM B.V. and its contributors
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* In addition, for the avoidance of any doubt, permission is granted to
* link this program with OpenSSL and to (re)distribute the binaries
* produced as the result of such linking.
*
* 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#pragma once
class MockupTLSCtx : public TLSCtx
{
public:
~MockupTLSCtx()
{
}
std::unique_ptr<TLSConnection> getConnection(int socket, const struct timeval& timeout, time_t now) override
{
return std::make_unique<MockupTLSConnection>(socket);
}
std::unique_ptr<TLSConnection> getClientConnection(const std::string& host, bool hostIsAddr, int socket, const struct timeval& timeout) override
{
return std::make_unique<MockupTLSConnection>(socket, true, d_needProxyProtocol);
}
void rotateTicketsKey(time_t now) override
{
}
size_t getTicketsKeysCount() override
{
return 0;
}
std::string getName() const override
{
return "Mockup TLS";
}
bool d_needProxyProtocol{false};
};
class MockupFDMultiplexer : public FDMultiplexer
{
public:
MockupFDMultiplexer()
{
}
~MockupFDMultiplexer()
{
}
int run(struct timeval* tv, int timeout = 500) override
{
int ret = 0;
gettimeofday(tv, nullptr); // MANDATORY
/* 'ready' might be altered by a callback while we are iterating */
const auto readyFDs = ready;
for (const auto fd : readyFDs) {
{
const auto& it = d_readCallbacks.find(fd);
if (it != d_readCallbacks.end()) {
it->d_callback(it->d_fd, it->d_parameter);
}
}
{
const auto& it = d_writeCallbacks.find(fd);
if (it != d_writeCallbacks.end()) {
it->d_callback(it->d_fd, it->d_parameter);
}
}
}
return ret;
}
void getAvailableFDs(std::vector<int>& fds, int timeout) override
{
}
void addFD(int fd, FDMultiplexer::EventKind kind) override
{
}
void removeFD(int fd, FDMultiplexer::EventKind) override
{
}
string getName() const override
{
return "mockup";
}
void setReady(int fd)
{
ready.insert(fd);
}
void setNotReady(int fd)
{
ready.erase(fd);
}
private:
std::set<int> ready;
};
static bool isIPv6Supported()
{
try {
ComboAddress addr("[2001:db8:53::1]:53");
auto socket = std::make_unique<Socket>(addr.sin4.sin_family, SOCK_STREAM, 0);
socket->setNonBlocking();
int res = SConnectWithTimeout(socket->getHandle(), addr, timeval{0, 0});
if (res == 0 || res == EINPROGRESS) {
return true;
}
return false;
}
catch (const std::exception& e) {
return false;
}
}
static ComboAddress getBackendAddress(const std::string& lastDigit, uint16_t port)
{
static const bool useV6 = isIPv6Supported();
if (useV6) {
return ComboAddress("2001:db8:53::" + lastDigit, port);
}
return ComboAddress("192.0.2." + lastDigit, port);
}
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