xenia/kakoune
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

move remoting code to remote.cc

Browse Source 
ClientAccepter is now Server's implementation detail and all socket logic
are isolated in remote.cc
This commit is contained in:
Maxime Coste 2013-03-13 19:59:39 +01:00
parent b309d1df61
commit 0b45a725e4
3 changed files with 124 additions and 123 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

75
src/main.cc
View File

@ -27,14 +27,8 @@
#endif
#include <unordered_map>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <sys/wait.h>
#include <unistd.h>
#include <fcntl.h>
#include <locale>
#include <signal.h>
using namespace Kakoune;
using namespace std::placeholders;
@ -686,50 +680,6 @@ std::unordered_map<Key, std::function<void (Context& context)>> keymap =
void run_unit_tests();
struct Server : public Singleton<Server>
{
Server()
{
m_filename = "/tmp/kak-" + int_to_str(getpid());
int listen_sock = socket(AF_UNIX, SOCK_STREAM, 0);
fcntl(listen_sock, F_SETFD, FD_CLOEXEC);
sockaddr_un addr;
addr.sun_family = AF_UNIX;
strncpy(addr.sun_path, m_filename.c_str(), sizeof(addr.sun_path) - 1);
if (bind(listen_sock, (sockaddr*) &addr, sizeof(sockaddr_un)) == -1)
throw runtime_error("unable to bind listen socket " + m_filename);
if (listen(listen_sock, 4) == -1)
throw runtime_error("unable to listen on socket " + m_filename);
auto accepter = [](FDWatcher& watcher) {
sockaddr_un client_addr;
socklen_t client_addr_len = sizeof(sockaddr_un);
int sock = accept(watcher.fd(), (sockaddr*) &client_addr, &client_addr_len);
if (sock == -1)
throw runtime_error("accept failed");
fcntl(sock, F_SETFD, FD_CLOEXEC);
new ClientAccepter{sock};
};
m_listener.reset(new FDWatcher{listen_sock, accepter});
}
~Server()
{
unlink(m_filename.c_str());
close(m_listener->fd());
}
const String& filename() const { return m_filename; }
private:
String m_filename;
std::unique_ptr<FDWatcher> m_listener;
};
void register_env_vars()
{
ShellManager& shell_manager = ShellManager::instance();
@ -804,24 +754,6 @@ void create_local_client(const String& init_command)
std::unique_ptr<UserInterface>{ui}, init_command);
}
RemoteClient* connect_to(const String& pid, const String& init_command)
{
auto filename = "/tmp/kak-" + pid;
int sock = socket(AF_UNIX, SOCK_STREAM, 0);
fcntl(sock, F_SETFD, FD_CLOEXEC);
sockaddr_un addr;
addr.sun_family = AF_UNIX;
strncpy(addr.sun_path, filename.c_str(), sizeof(addr.sun_path) - 1);
if (connect(sock, (sockaddr*)&addr, sizeof(addr.sun_path)) == -1)
throw runtime_error("connect to " + filename + " failed");
NCursesUI* ui = new NCursesUI{};
RemoteClient* remote_client = new RemoteClient{sock, ui, init_command};
return remote_client;
}
void signal_handler(int signal)
{
endwin();
@ -862,8 +794,9 @@ int main(int argc, char* argv[])
{
try
{
std::unique_ptr<RemoteClient> client(
connect_to(parser.option_value("c"), init_command));
auto client = connect_to(parser.option_value("c"),
std::unique_ptr<UserInterface>{new NCursesUI{}},
init_command);
while (true)
event_manager.handle_next_events();
}

81
src/remote.cc
View File

@ -9,6 +9,11 @@
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <sys/wait.h>
#include <unistd.h>
#include <fcntl.h>
namespace Kakoune
{
@ -303,9 +308,9 @@ void RemoteUI::set_input_callback(InputCallback callback)
m_input_callback = std::move(callback);
}
RemoteClient::RemoteClient(int socket, UserInterface* ui,
RemoteClient::RemoteClient(int socket, std::unique_ptr<UserInterface>&& ui,
const String& init_command)
: m_ui(ui), m_dimensions(ui->dimensions()),
: m_ui(std::move(ui)), m_dimensions(m_ui->dimensions()),
m_socket_watcher{socket, [this](FDWatcher&){ process_next_message(); }}
{
Message msg(socket);
@ -380,11 +385,38 @@ void RemoteClient::write_next_key()
}
}
ClientAccepter::ClientAccepter(int socket)
std::unique_ptr<RemoteClient> connect_to(const String& pid, std::unique_ptr<UserInterface>&& ui,
const String& init_command)
{
auto filename = "/tmp/kak-" + pid;
int sock = socket(AF_UNIX, SOCK_STREAM, 0);
fcntl(sock, F_SETFD, FD_CLOEXEC);
sockaddr_un addr;
addr.sun_family = AF_UNIX;
strncpy(addr.sun_path, filename.c_str(), sizeof(addr.sun_path) - 1);
if (connect(sock, (sockaddr*)&addr, sizeof(addr.sun_path)) == -1)
throw runtime_error("connect to " + filename + " failed");
return std::unique_ptr<RemoteClient>{new RemoteClient{sock, std::move(ui), init_command}};
}
// A client accepter handle a connection until it closes or a nul byte is
// recieved. Everything recieved before is considered to be a command.
//
// * When a nul byte is recieved, the socket is handed to a new Client along
// with the command.
// * When the connection is closed, the command is run in an empty context.
class ClientAccepter
{
public:
ClientAccepter(int socket)
: m_socket_watcher(socket, [this](FDWatcher&) { handle_available_input(); }) {}
void ClientAccepter::handle_available_input()
{
private:
void handle_available_input()
{
int socket = m_socket_watcher.fd();
timeval tv{ 0, 0 };
fd_set rfds;
@ -420,6 +452,45 @@ void ClientAccepter::handle_available_input()
FD_SET(socket, &rfds);
}
while (select(socket+1, &rfds, NULL, NULL, &tv) == 1);
}
String m_buffer;
FDWatcher m_socket_watcher;
};
Server::Server()
{
m_filename = "/tmp/kak-" + int_to_str(getpid());
int listen_sock = socket(AF_UNIX, SOCK_STREAM, 0);
fcntl(listen_sock, F_SETFD, FD_CLOEXEC);
sockaddr_un addr;
addr.sun_family = AF_UNIX;
strncpy(addr.sun_path, m_filename.c_str(), sizeof(addr.sun_path) - 1);
if (bind(listen_sock, (sockaddr*) &addr, sizeof(sockaddr_un)) == -1)
throw runtime_error("unable to bind listen socket " + m_filename);
if (listen(listen_sock, 4) == -1)
throw runtime_error("unable to listen on socket " + m_filename);
auto accepter = [](FDWatcher& watcher) {
sockaddr_un client_addr;
socklen_t client_addr_len = sizeof(sockaddr_un);
int sock = accept(watcher.fd(), (sockaddr*) &client_addr, &client_addr_len);
if (sock == -1)
throw runtime_error("accept failed");
fcntl(sock, F_SETFD, FD_CLOEXEC);
new ClientAccepter{sock};
};
m_listener.reset(new FDWatcher{listen_sock, accepter});
}
Server::~Server()
{
unlink(m_filename.c_str());
close(m_listener->fd());
}
}

35
src/remote.hh
View File

@ -10,39 +10,36 @@ namespace Kakoune
struct peer_disconnected {};
// A client accepter handle a connection until it closes or a nul byte is
// recieved. Everything recieved before is considered to be a command.
//
// * When a nul byte is recieved, the socket is handed to a new Client along
// with the command.
// * When the connection is closed, the command is run in an empty context.
class ClientAccepter
{
public:
ClientAccepter(int socket);
private:
void handle_available_input();
String m_buffer;
FDWatcher m_socket_watcher;
};
// A remote client handle communication between a client running on the server
// and a user interface running on the local process.
class RemoteClient
{
public:
RemoteClient(int socket, UserInterface* ui,
RemoteClient(int socket, std::unique_ptr<UserInterface>&& ui,
const String& init_command);
private:
void process_next_message();
void write_next_key();
private:
std::unique_ptr<UserInterface> m_ui;
DisplayCoord m_dimensions;
FDWatcher m_socket_watcher;
};
std::unique_ptr<RemoteClient> connect_to(const String& pid,
std::unique_ptr<UserInterface>&& ui,
const String& init_command);
struct Server : public Singleton<Server>
{
Server();
~Server();
const String& filename() const { return m_filename; }
private:
String m_filename;
std::unique_ptr<FDWatcher> m_listener;
};
}