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/*
* Copyright 2016 Canonical Ltd.
*
* This program is free software: you can redistribute it and/or modify it
* under the terms of the GNU 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 warranties of
* MERCHANTABILITY, SATISFACTORY QUALITY, 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, see <http://www.gnu.org/licenses/>.
*
* Authors:
* Charles Kerr <charles.kerr@canonical.com>
*/
#include <gio/gio.h>
#include <gio/gunixsocketaddress.h>
#include <string>
#include <thread>
#include <vector>
/**
* A Mock ADBD server.
*
* Binds to a local domain socket, sends public key requests across it,
* and reads back the client's responses.
*/
class GAdbdServer
{
public:
GAdbdServer(const std::string& socket_path,
const std::vector<std::string>& requests):
m_requests{requests},
m_server_socket{create_server_socket(socket_path)},
m_cancellable{g_cancellable_new()},
m_worker_thread{&GAdbdServer::worker_func, this}
{
}
~GAdbdServer()
{
// tell the worker thread to stop whatever it's doing and exit.
g_cancellable_cancel(m_cancellable);
m_worker_thread.join();
g_clear_object(&m_cancellable);
g_clear_object(&m_server_socket);
}
const std::vector<std::string> m_requests;
std::vector<std::string> m_responses;
private:
void worker_func() // runs in worker thread
{
auto requests = m_requests;
while (!g_cancellable_is_cancelled(m_cancellable) && !requests.empty())
{
// wait for a client connection
g_message("GAdbdServer::Impl::worker_func() calling g_socket_accept()");
GError* error {};
auto client_socket = g_socket_accept(m_server_socket, m_cancellable, &error);
if (error != nullptr) {
if (!g_error_matches(error, G_IO_ERROR, G_IO_ERROR_CANCELLED))
g_message("GAdbdServer: Error accepting socket connection: %s", error->message);
g_clear_error(&error);
break;
}
// pop the next request off the stack
auto request = requests.front();
// send the request
g_message("GAdbdServer::Impl::worker_func() sending req [%s]", request.c_str());
g_socket_send(client_socket,
request.c_str(),
request.size(),
m_cancellable,
&error);
if (error != nullptr) {
if (!g_error_matches(error, G_IO_ERROR, G_IO_ERROR_CANCELLED))
g_message("GAdbdServer: Error sending request: %s", error->message);
g_clear_error(&error);
g_clear_object(&client_socket);
break;
}
// read the response
g_message("GAdbdServer::Impl::worker_func() reading response");
char buf[4096];
const auto n_bytes = g_socket_receive(client_socket,
buf,
sizeof(buf),
m_cancellable,
&error);
if (error != nullptr) {
if (!g_error_matches(error, G_IO_ERROR, G_IO_ERROR_CANCELLED))
g_message("GAdbdServer: Error reading response: %s", error->message);
g_clear_error(&error);
g_clear_object(&client_socket);
continue;
}
const std::string response(buf, std::string::size_type(n_bytes));
g_message("server read %d bytes, got response: '%s'", int(n_bytes), response.c_str());
if (!response.empty()) {
m_responses.push_back(response);
requests.erase(requests.begin());
}
// cleanup
g_clear_object(&client_socket);
}
}
// bind to a local domain socket
static GSocket* create_server_socket(const std::string& socket_path)
{
GError* error {};
auto socket = g_socket_new(G_SOCKET_FAMILY_UNIX,
G_SOCKET_TYPE_STREAM,
G_SOCKET_PROTOCOL_DEFAULT,
&error);
g_assert_no_error(error);
auto address = g_unix_socket_address_new (socket_path.c_str());
g_socket_bind (socket, address, false, &error);
g_assert_no_error (error);
g_clear_object (&address);
g_socket_listen (socket, &error);
g_assert_no_error (error);
return socket;
}
GSocket* m_server_socket {};
GCancellable* m_cancellable {};
std::thread m_worker_thread;
};
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