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using Gee;
using Xmpp;
using Dino.Entities;
namespace Dino {
public class ConnectionManager {
public signal void stream_opened(Account account, Core.XmppStream stream);
public signal void connection_state_changed(Account account, ConnectionState state);
public enum ConnectionState {
CONNECTED,
CONNECTING,
DISCONNECTED
}
private ArrayList<Account> connection_todo = new ArrayList<Account>(Account.equals_func);
private HashMap<Account, Connection> stream_states = new HashMap<Account, Connection>(Account.hash_func, Account.equals_func);
private NetworkManager? network_manager;
private Login1Manager? login1;
private ModuleManager module_manager;
private class Connection {
public Core.XmppStream stream { get; set; }
public ConnectionState connection_state { get; set; default = ConnectionState.DISCONNECTED; }
public DateTime established { get; set; }
public class Connection(Core.XmppStream stream, DateTime established) {
this.stream = stream;
this.established = established;
}
}
public ConnectionManager(ModuleManager module_manager) {
this.module_manager = module_manager;
network_manager = get_network_manager();
if (network_manager != null) {
network_manager.StateChanged.connect(on_nm_state_changed);
}
login1 = get_login1();
if (login1 != null) {
login1.PrepareForSleep.connect(on_prepare_for_sleep);
}
}
public Core.XmppStream? get_stream(Account account) {
if (get_connection_state(account) == ConnectionState.CONNECTED) {
return stream_states[account].stream;
}
return null;
}
public ConnectionState get_connection_state(Account account) {
if (stream_states.has_key(account)){
return stream_states[account].connection_state;
}
return ConnectionState.DISCONNECTED;
}
public ArrayList<Account> get_managed_accounts() {
return connection_todo;
}
public Core.XmppStream? connect(Account account) {
if (!connection_todo.contains(account)) connection_todo.add(account);
if (!stream_states.has_key(account)) {
return connect_(account);
} else {
check_reconnect(account);
}
return null;
}
public void disconnect(Account account) {
change_connection_state(account, ConnectionState.DISCONNECTED);
if (stream_states.has_key(account)) {
try {
stream_states[account].stream.disconnect();
} catch (Error e) { }
}
connection_todo.remove(account);
}
private Core.XmppStream? connect_(Account account, string? resource = null) {
if (resource == null) resource = account.resourcepart;
if (stream_states.has_key(account)) {
stream_states[account].stream.remove_modules();
}
Core.XmppStream stream = new Core.XmppStream();
foreach (Core.XmppStreamModule module in module_manager.get_modules(account, resource)) {
stream.add_module(module);
}
stream.debug = false;
Connection connection = new Connection(stream, new DateTime.now_local());
stream_states[account] = connection;
change_connection_state(account, ConnectionState.CONNECTING);
stream.stream_negotiated.connect((stream) => {
change_connection_state(account, ConnectionState.CONNECTED);
});
new Thread<void*> (null, () => {
try {
stream.connect(account.domainpart);
} catch (Error e) {
stderr.printf("Stream Error: %s\n", e.message);
change_connection_state(account, ConnectionState.DISCONNECTED);
interpret_reconnect_flags(account, StreamError.Flag.get_flag(stream) ??
new StreamError.Flag() { reconnection_recomendation = StreamError.Flag.Reconnect.NOW });
}
return null;
});
stream_opened(account, stream);
return stream;
}
private void interpret_reconnect_flags(Account account, StreamError.Flag stream_error_flag) {
if (!connection_todo.contains(account)) return;
int wait_sec = 10;
if (network_manager != null && network_manager.State != NetworkManager.CONNECTED_GLOBAL) {
wait_sec = 60;
}
switch (stream_error_flag.reconnection_recomendation) {
case StreamError.Flag.Reconnect.NOW:
wait_sec = 10;
break;
case StreamError.Flag.Reconnect.LATER:
case StreamError.Flag.Reconnect.UNKNOWN:
wait_sec = 60;
break;
case StreamError.Flag.Reconnect.NEVER:
return;
}
print(@"recovering in $wait_sec\n");
Timeout.add_seconds(wait_sec, () => {
if (stream_error_flag.resource_rejected) {
connect_(account, account.resourcepart + "-" + random_uuid());
} else {
connect_(account);
}
return false;
});
}
private void check_reconnects() {
foreach (Account account in connection_todo) {
check_reconnect(account);
}
}
private void check_reconnect(Account account) {
PingResponseListenerImpl ping_response_listener = new PingResponseListenerImpl(this, account);
Core.XmppStream stream = stream_states[account].stream;
Xep.Ping.Module.get_module(stream).send_ping(stream, account.domainpart, ping_response_listener);
Timeout.add_seconds(5, () => {
if (stream_states[account].stream != stream) return false;
if (ping_response_listener.acked) return false;
change_connection_state(account, ConnectionState.DISCONNECTED);
try {
stream_states[account].stream.disconnect();
} catch (Error e) { }
return false;
});
}
private class PingResponseListenerImpl : Xep.Ping.ResponseListener, Object {
public bool acked = false;
ConnectionManager outer;
Account account;
public PingResponseListenerImpl(ConnectionManager outer, Account account) {
this.outer = outer;
this.account = account;
}
public void on_result(Core.XmppStream stream) {
print("ping ok\n");
acked = true;
outer.change_connection_state(account, ConnectionState.CONNECTED);
}
}
private void on_nm_state_changed(uint32 state) {
print("nm " + state.to_string() + "\n");
if (state == NetworkManager.CONNECTED_GLOBAL) {
check_reconnects();
} else {
foreach (Account account in connection_todo) {
change_connection_state(account, ConnectionState.DISCONNECTED);
}
}
}
private void on_prepare_for_sleep(bool suspend) {
foreach (Account account in connection_todo) {
change_connection_state(account, ConnectionState.DISCONNECTED);
}
if (suspend) {
print("suspend\n");
foreach (Account account in connection_todo) {
Xmpp.Presence.Stanza presence = new Xmpp.Presence.Stanza();
presence.type_ = Xmpp.Presence.Stanza.TYPE_UNAVAILABLE;
try {
Presence.Module.get_module(stream_states[account].stream).send_presence(stream_states[account].stream, presence);
stream_states[account].stream.disconnect();
} catch (Error e) { print(@"on_prepare_for_sleep error $(e.message)\n"); }
}
} else {
print("un-suspend\n");
check_reconnects();
}
}
private void change_connection_state(Account account, ConnectionState state) {
stream_states[account].connection_state = state;
connection_state_changed(account, state);
}
}
}
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