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namespace Tmate
{
public interface SessionInterface : Object
{
public abstract signal void address (SessionType session, string address);
public abstract string? @get(SessionType session);
public abstract bool start(string? config = null);
public abstract bool stop();
}
[SingleInstance]
public class Session: Object, SessionInterface
{
private string? _addr_ssh = null;
private string? _addr_http = null;
private string? _addr_ssh_ro = null;
private string? _addr_http_ro = null;
private IOChannel? stdout = null;
private Pid? pid = null;
private uint error_count = 0;
// Regex
private Regex r_connect = /^Connecting to .+\.\.\.$/;
private Regex r_socket = /^To connect.+ tmate -S (.+) attach$/;
private Regex r_http = /^web \w+[:] (.+)$/;
private Regex r_ssh = /^ssh \w+[:] .+ (.+)+$/;
private Regex r_http_ro = /^web \w+ read \w+[:] (.+)$/;
private Regex r_ssh_ro = /^ssh \w+ read \w+[:] .+ (.+)+$/;
private Regex r_joined = /^.+ joined \(([^()]+)\) -- (\d+) clients? .+$/;
private Regex r_left = /^.+ left \(([^()]+)\) -- (\d+) clients? .+$/;
private Regex r_closed = /^Session closed$/;
private Regex r_note = /^(Note: |Reconnecting)/;
private Regex r_restarted = /^Session shell restarted$/;
private Regex r_netfail= /^[^ ]+ lookup failure\..+ \((.+)\)$/;
public SessionType flags { get; private set;}
public string? socket { get; private set;}
public bool terminate = true;
construct { reset(); }
public virtual signal void started (string socket)
{
info (_("Session: unix://%s"), socket);
}
public virtual signal void network_error(string message)
{
if(error_count ++ > 5) stop();
}
public virtual signal void stopped ()
{
info (_("Session terminated."));
reset();
}
private void address_set(SessionType session, string address)
{
info (_("%s address: %s"), session.to_string(), address);
if (session in SessionType.SSH|SessionType.SSH_READONLY|SessionType.HTTP|SessionType.HTTP_READONLY) {
switch(session) {
case SSH:
_addr_ssh = address;
break;
case HTTP:
_addr_http = address;
break;
case HTTP_READONLY:
_addr_http_ro = address;
break;
case SSH_READONLY :
_addr_ssh_ro = address;
break;
default:
warn_if_reached();
break;
}
flags |= session;
this.address(session, address);
} else if (session == DISCONNECTED) {
_addr_http = _addr_ssh = _addr_http_ro = _addr_ssh_ro = null;
flags = DISCONNECTED;
this.address(DISCONNECTED, "");
}
}
public virtual signal void joined (string mate, int mates)
{
info(_("%s joined, connected: %d"), mate, mates);
}
public virtual signal void left (string mate, int mates)
{
info(_("%s left, connected: %d"), mate, mates);
}
private void reset()
{
_addr_ssh = null;
_addr_http = null;
_addr_ssh_ro = null;
_addr_http_ro = null;
stdout = null;
pid = null;
socket = null;
flags = DISCONNECTED;
error_count = 0;
}
private bool send(string[] args)
{
if(socket == 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;
}
}
public new string? @get(SessionType session)
{
switch(session) {
case SSH:
return _addr_ssh;
case HTTP:
return _addr_http;
case SSH_READONLY :
return _addr_ssh_ro;
case HTTP_READONLY:
return _addr_http_ro;
case DISCONNECTED :
warning("No running session.");
break;
default:
warning("Unknown Session Type %s", session.to_string());
break;
}
return null;
}
public bool stop()
{
return send({"kill-server"});
}
private void restart()
{
if(terminate) {
stop();
return;
}
started(socket);
if((bool)_addr_ssh) address(SSH, _addr_ssh);
if((bool)_addr_ssh_ro) address(SSH_READONLY, _addr_ssh_ro);
if((bool)_addr_http) address(HTTP, _addr_http);
if((bool)_addr_http_ro) address(HTTP_READONLY, _addr_http_ro);
}
public bool start(string? config = null)
{
if(! (pid == null)) {
started(socket);
return true;
}
int out_fd;
var args = new GenericArray<string>();
args.data = {"/usr/bin/tmate", "-F"};
if(! (config == null) && FileUtils.test(config, IS_REGULAR)) {
args.add("-f");
args.add(config);
}
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;
MatchInfo info;
channel.read_line (out line, null, null);
if(r_socket.match(line, 0, out info))
socket = info.fetch(1);
else if (r_connect.match(line) && socket != null)
started(socket);
else if(r_http.match(line, 0, out info))
address_set(HTTP, info.fetch(1));
else if(r_http_ro.match(line, 0, out info))
address_set(HTTP_READONLY, info.fetch(1));
else if(r_ssh.match(line, 0, out info))
address_set(SSH, info.fetch(1));
else if(r_ssh_ro.match(line, 0, out info))
address_set(SSH_READONLY, info.fetch(1));
else if(r_restarted.match(line))
restart();
else if(r_closed.match(line))
stopped();
else if(r_netfail.match(line, 0, out info))
network_error(info.fetch(1));
else if(r_note.match(line)) unlikely(false); // Ignore line
else
debug("Unprocessed line: \"%s\"", line);
} 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);
if(flags != DISCONNECTED)
stopped();
});
return true;
} catch (SpawnError e) {
warning("Error: %s", e.message);
stopped();
return false;
}
}
}
}
|
