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namespace Tmate
{
public interface SessionInterface : Object
{
public abstract signal void started (string socket);
public abstract signal void stopped ();
public abstract signal void address_changed (SessionType session, string address);
public abstract signal void error (string summery, string message = "");
public abstract signal void joined (string mate, int mates);
public abstract signal void left (string mate, int mates);
public abstract bool start(Config? config = null);
public abstract bool stop();
}
[SingleInstance]
public class Session: Object, SessionInterface
{
private IOChannel? stdout = null;
private Pid? pid = null;
private uint error_count = 0;
public bool terminate = true;
public SessionAddress address { get; construct; }
public string? socket { get; private set;}
public Config? config { get; private set;}
construct {
address = new SessionAddress();
reset();
address.clear();
error.connect_after(() => {
if(error_count++ < 5) return;
stop();
});
}
private void address_set(SessionType session, string? address)
{
if (SessionType.SSH in session || SessionType.HTTP in session) {
debug("CALL: %s\t%s", session.to_string(), address);
if(address != null || address != "")
this.address.add(session, address);
if(this.address[session] != null)
address_changed (session, this.address[session]);
}
}
private void reset()
{
stdout = null;
pid = null;
socket = null;
error_count = 0;
address.clear();
delete_config();
}
internal void delete_config()
{
if(null == config) return;
config.delete();
config = null;
}
private bool send(string[] args)
{
if(pid == null)
return false;
var command = new GenericArray<string>();
command.data = {
"/usr/bin/tmate",
"-S", socket
};
foreach(var arg in args)
command.add(arg);
try {
return Process.spawn_sync(null, command.data, null,
STDERR_TO_DEV_NULL|STDOUT_TO_DEV_NULL,
null, null, null, null);
} catch (SpawnError e) {
return false;
}
}
private void restart()
{
if(terminate) {
stop();
return;
}
started(socket);
address_set(SSH, null);
address_set(HTTP, null);
address_set(SSH | READONLY, null);
address_set(HTTP | READONLY, null);
}
public bool stop()
{
debug("stopping!");
var ret = send({"kill-server"});
if (! send({"has"})) {
debug("stopped!");
Idle.add(() => {
stopped();
return false;
});
}
return ret;
}
public bool start(Config? config = null)
{
if(null != pid) {
started(socket);
return true;
}
int out_fd;
var args = new GenericArray<string>();
args.data = {"/usr/bin/tmate", "-F"};
if(null != config) {
this.config = config;
args.add("-f");
args.add(config.get_path());
}
try {
Process.spawn_async_with_pipes(
null, args.data, null,
STDERR_TO_DEV_NULL | DO_NOT_REAP_CHILD,
null, out pid, null,
out out_fd, null
);
stdout = new IOChannel.unix_new(out_fd);
stdout.add_watch(IOCondition.IN | IOCondition.HUP, (channel, condition) => {
if (condition == IOCondition.HUP)
return false;
try {
string line;
channel.read_line (out line, null, null);
Stdout.Token token = (new Stdout()).parse(line);
debug(token.to_string());
switch(token.class) {
case SOCKET:
socket = token.list[0];
return true;
case INIT:
started (socket);
delete_config();
return true;
case ADDRESS:
address_set(
SessionType.from_string(
token.list[0], token.list[1]
), token.list[2]);
return true;
case RESTART:
restart();
return true;
case TERM:
info (_("Session terminated."));
stopped();
return false;
case ERROR:
this.error(token.list[0], token.list[1]);
return true;
case COMMENT:
return true; // not needed.
case MATES:
return true;// TODO: handle mates join/leave
case UNKNOWN:
debug("%s", token.list[0]);
return true;
}
} catch (IOChannelError e) {
print ("IOChannelError: %s\n", e.message);
return false;
} catch (ConvertError e) {
print ("ConvertError: %s\n", e.message);
return false;
}
return true;
});
ChildWatch.add(pid, (pid, status) => {
Process.close_pid(pid);
reset();
stopped();
});
return true;
} catch (SpawnError e) {
warning("Error: %s", e.message);
this.error(e.message);
reset();
stopped();
return false;
}
}
}
}
|
