/*
* dead_link - Adds client to a list of clients that need an exit_client()
*
*/
void dead_link(struct Client *client_p)
{
dlink_node *m;
const char *notice;
if(IsClosing(client_p))
return;
linebuf_donebuf(&client_p->localClient->buf_recvq);
linebuf_donebuf(&client_p->localClient->buf_sendq);
if(client_p->flags & FLAGS_SENDQEX)
notice = "Max SendQ exceeded";
else
notice = "Dead link";
if (!IsPerson(client_p) && !IsUnknown(client_p) && !IsClosing(client_p))
{
sendto_realops_flags(FLAGS_ALL, L_ADMIN,
notice, get_client_name(client_p, HIDE_IP));
sendto_realops_flags(FLAGS_ALL, L_OPER,
notice, get_client_name(client_p, MASK_IP));
}
Debug((DEBUG_ERROR, notice, get_client_name(to, HIDE_IP)));
assert(dlinkFind(&abort_list, client_p) == NULL);
m = make_dlink_node();
dlinkAdd(client_p, m, &abort_list);
SetDead(client_p); /* You are dead my friend */
}
bool ClientHandler::DoClose(CefRefPtr<CefBrowser> browser) {
qDebug() << __FUNCTION__;
REQUIRE_UI_THREAD();
base::AutoLock lock_scope(lock_DoClose);
// Closing the main window requires special handling. See the DoClose()
// documentation in the CEF header for a detailed destription of this
// process.
/// TODO probably too late already, onbeforeunload has probably already been called.
qDebug() << "browser->GetIdentifier():" << browser->GetIdentifier();
if (m_BrowserId == browser->GetIdentifier() && !m_bIsClosing) {
/// Notify the browser that the parent window is about to close.
/// NOTE: ParentWindowWillClose appears to have been removed because it was never
/// actually implemented.
/// browser->ParentWindowWillClose();
// Set a flag to indicate that the window close should be allowed.
m_bIsClosing = true;
qDebug() << "CEF closing step 6 a: is closing: " << IsClosing();
#ifdef WIN32
// Maybe to CsoundQt?
//::DestroyWindow(browser->GetHost()->GetWindowHandle());
#endif
}
// Allow the close. For windowed browsers this will result in the OS close
// event being sent.
qDebug() << "CEF closing step 6 b: is closing: " << IsClosing();
return true;
}
/* If the client never finished authenticating but is
* registering anyway, abort the exchange.
*/
static void
abort_sasl(struct Client *data)
{
if(data->localClient->sasl_out == 0 || data->localClient->sasl_complete)
return;
data->localClient->sasl_out = data->localClient->sasl_complete = 0;
ServerStats.is_sbad++;
if(!IsClosing(data))
sendto_one(data, form_str(ERR_SASLABORTED), me.name, EmptyString(data->name) ? "*" : data->name);
if(*data->localClient->sasl_agent)
{
struct Client *agent_p = find_id(data->localClient->sasl_agent);
if(agent_p)
{
sendto_one(agent_p, ":%s ENCAP %s SASL %s %s D A", me.id, agent_p->servptr->name,
data->id, agent_p->id);
return;
}
}
sendto_server(NULL, NULL, CAP_TS6|CAP_ENCAP, NOCAPS, ":%s ENCAP * SASL %s * D A", me.id,
data->id);
}
void Tapplication::OnIdle()
{
if (IsClosing())
return;
// Dispatch idle messages to all pages
for ( int i = 0; i < pageCount; ++i )
pageStack[i]->OnIdle();
if (m_pTaskManager)
m_pTaskManager->OnIdleEvent();
}
int Udp::RecvStop()
{
assert(IsOpened() || IsClosing());
assert(IsRecvStarted());
int result = uv_udp_recv_stop(*this);
m_pRecvHandler = NULL;
Unref();
return result;
}
void TcpServer::UserOnTcpConnectionClosed(::TcpConnection* connection, bool isClosedByPeer)
{
MS_TRACE();
// Notify the listener.
// NOTE: Don't do it if closing (since at this point the listener is already freed).
// At the end, this is just called if the connection was remotely closed.
if (!IsClosing())
{
this->listener->OnRtcTcpConnectionClosed(
this, dynamic_cast<RTC::TcpConnection*>(connection), isClosedByPeer);
}
}
dword Tapplication::EventHandler( word event, dword param1, dword param2 )
{
if (IsClosing())
return param1;
switch ( event )
{
case EVT_IDLE:
OnIdle();
return 0;
case EVT_KEY:
if (m_reshowUIKey != 0)
return OnKeyWhenHidden(param1, param2);
return OnKey( param1, param2 );
default:
return OnOtherEvent(event, param1, param2);
}
}
void _free_client(struct Client* client_p)
{
assert(NULL != client_p);
assert(&me != client_p);
assert(NULL == client_p->prev);
assert(NULL == client_p->next);
if (MyConnect(client_p))
{
assert(IsClosing(client_p) && IsDead(client_p));
/*
* clean up extra sockets from P-lines which have been discarded.
*/
if (client_p->localClient->listener)
{
assert(0 < client_p->localClient->listener->ref_count);
if (0 == --client_p->localClient->listener->ref_count &&
!client_p->localClient->listener->active)
free_listener(client_p->localClient->listener);
client_p->localClient->listener = 0;
}
if (client_p->localClient->fd >= 0)
fd_close(client_p->localClient->fd);
BlockHeapFree(lclient_heap, client_p->localClient);
--local_client_count;
assert(local_client_count >= 0);
}
else
{
--remote_client_count;
}
BlockHeapFree(client_heap, client_p);
}
void UnixStreamSocket::userOnUnixStreamRead()
{
MS_TRACE_STD();
// Be ready to parse more than a single message in a single TCP chunk.
while (true)
{
if (IsClosing())
return;
size_t read_len = this->bufferDataLen - this->msgStart;
char* json_start = nullptr;
size_t json_len;
int ns_ret = netstring_read((char*)(this->buffer + this->msgStart), read_len,
&json_start, &json_len);
if (ns_ret != 0)
{
switch (ns_ret)
{
case NETSTRING_ERROR_TOO_SHORT:
// MS_DEBUG_STD("received netstring is too short, need more data");
// Check if the buffer is full.
if (this->bufferDataLen == this->bufferSize)
{
// First case: the incomplete message does not begin at position 0 of
// the buffer, so move the incomplete message to the position 0.
if (this->msgStart != 0)
{
// MS_DEBUG_STD("no more space in the buffer, moving parsed bytes to the beginning of the buffer and waiting for more data");
std::memmove(this->buffer, this->buffer + this->msgStart, read_len);
this->msgStart = 0;
this->bufferDataLen = read_len;
}
// Second case: the incomplete message begins at position 0 of the buffer.
// The message is too big, so discard it.
else
{
MS_ERROR_STD("no more space in the buffer for the unfinished message being parsed, discarding it");
this->msgStart = 0;
this->bufferDataLen = 0;
}
}
// Otherwise the buffer is not full, just wait.
// Exit the parsing loop.
return;
case NETSTRING_ERROR_TOO_LONG:
MS_ERROR_STD("NETSTRING_ERROR_TOO_LONG");
break;
case NETSTRING_ERROR_NO_COLON:
MS_ERROR_STD("NETSTRING_ERROR_NO_COLON");
break;
case NETSTRING_ERROR_NO_COMMA:
MS_ERROR_STD("NETSTRING_ERROR_NO_COMMA");
break;
case NETSTRING_ERROR_LEADING_ZERO:
MS_ERROR_STD("NETSTRING_ERROR_LEADING_ZERO");
break;
case NETSTRING_ERROR_NO_LENGTH:
MS_ERROR_STD("NETSTRING_ERROR_NO_LENGTH");
break;
}
// Error, so reset and exit the parsing loop.
this->msgStart = 0;
this->bufferDataLen = 0;
return;
}
// If here it means that json_start points to the beginning of a JSON string
// with json_len bytes length, so recalculate read_len.
read_len = (const uint8_t*)json_start - (this->buffer + this->msgStart) + json_len + 1;
Json::Value json;
std::string json_parse_error;
if (this->jsonReader->parse((const char*)json_start, (const char*)json_start + json_len, &json, &json_parse_error))
{
Channel::Request* request = nullptr;
try
{
request = new Channel::Request(this, json);
}
catch (const MediaSoupError &error)
{
MS_ERROR_STD("discarding wrong Channel request");
}
if (request)
{
// Notify the listener.
this->listener->onChannelRequest(this, request);
// Delete the Request.
delete request;
}
}
else
{
MS_ERROR_STD("JSON parsing error: %s", json_parse_error.c_str());
}
// If there is no more space available in the buffer and that is because
// the latest parsed message filled it, then empty the full buffer.
if ((this->msgStart + read_len) == this->bufferSize)
{
// MS_DEBUG_STD("no more space in the buffer, emptying the buffer data");
this->msgStart = 0;
this->bufferDataLen = 0;
}
// If there is still space in the buffer, set the beginning of the next
// parsing to the next position after the parsed message.
else
{
this->msgStart += read_len;
}
// If there is more data in the buffer after the parsed message
// then parse again. Otherwise break here and wait for more data.
if (this->bufferDataLen > this->msgStart)
{
// MS_DEBUG_STD("there is more data after the parsed message, continue parsing");
continue;
}
else
{
break;
}
}
}
/*
** exit_client - This is old "m_bye". Name changed, because this is not a
** protocol function, but a general server utility function.
**
** This function exits a client of *any* type (user, server, etc)
** from this server. Also, this generates all necessary prototol
** messages that this exit may cause.
**
** 1) If the client is a local client, then this implicitly
** exits all other clients depending on this connection (e.g.
** remote clients having 'from'-field that points to this.
**
** 2) If the client is a remote client, then only this is exited.
**
** For convenience, this function returns a suitable value for
** m_function return value:
**
** CLIENT_EXITED if (client_p == source_p)
** 0 if (client_p != source_p)
*/
int exit_client(
struct Client* client_p, /* The local client originating the
* exit or NULL, if this exit is
* generated by this server for
* internal reasons.
* This will not get any of the
* generated messages. */
struct Client* source_p, /* Client exiting */
struct Client* from, /* Client firing off this Exit,
* never NULL! */
const char* comment /* Reason for the exit */
)
{
char comment1[HOSTLEN + HOSTLEN + 2];
dlink_node *m;
fprintf(stderr, "Exiting client: %s\n", comment);
if (MyConnect(source_p))
{
/* DO NOT REMOVE. exit_client can be called twice after a failed
* read/write.
*/
if(IsClosing(source_p))
return 0;
SetClosing(source_p);
if (source_p->flags & FLAGS_IPHASH)
remove_one_ip(&source_p->localClient->ip);
delete_adns_queries(source_p->localClient->dns_query);
delete_identd_queries(source_p);
client_flush_input(source_p);
/* This source_p could have status of one of STAT_UNKNOWN, STAT_CONNECTING
* STAT_HANDSHAKE or STAT_UNKNOWN
* all of which are lumped together into unknown_list
*
* In all above cases IsRegistered() will not be true.
*/
if (!IsRegistered(source_p))
{
m = dlinkFind(&unknown_list,source_p);
if(m != NULL)
{
dlinkDelete(m, &unknown_list);
free_dlink_node(m);
}
}
if (IsOper(source_p))
{
m = dlinkFind(&oper_list,source_p);
if(m != NULL)
{
dlinkDelete(m, &oper_list);
free_dlink_node(m);
}
}
if (IsClient(source_p))
{
Count.local--;
if(IsPerson(source_p)) /* a little extra paranoia */
{
m = dlinkFind(&lclient_list,source_p);
if(m != NULL)
{
dlinkDelete(m,&lclient_list);
free_dlink_node(m);
}
}
}
/* As soon as a client is known to be a server of some sort
* it has to be put on the serv_list, or SJOIN's to this new server
* from the connect burst will not be seen.
*/
if (IsServer(source_p) || IsConnecting(source_p) ||
IsHandshake(source_p))
{
m = dlinkFind(&serv_list,source_p);
if(m != NULL)
{
dlinkDelete(m,&serv_list);
free_dlink_node(m);
unset_chcap_usage_counts(source_p);
}
}
if (IsServer(source_p))
{
Count.myserver--;
if(ServerInfo.hub)
remove_lazylink_flags(source_p->localClient->serverMask);
else
uplink = NULL;
}
if (IsPerson(source_p))
sendto_realops_flags(FLAGS_CCONN, L_ALL,
"Client exiting: %s (%s@%s) [%s] [%s]",
source_p->name, source_p->username, source_p->host,
comment, source_p->localClient->sockhost);
log_user_exit(source_p);
if (source_p->localClient->fd >= 0)
{
if (client_p != NULL && source_p != client_p)
sendto_one(source_p, "ERROR :Closing Link: %s %s (%s)",
source_p->host, source_p->name, comment);
else
sendto_one(source_p, "ERROR :Closing Link: %s (%s)",
source_p->host, comment);
}
/*
** Currently only server connections can have
** depending remote clients here, but it does no
** harm to check for all local clients. In
** future some other clients than servers might
** have remotes too...
**
** Close the Client connection first and mark it
** so that no messages are attempted to send to it.
** (The following *must* make MyConnect(source_p) == FALSE!).
** It also makes source_p->from == NULL, thus it's unnecessary
** to test whether "source_p != target_p" in the following loops.
*/
close_connection(source_p);
}
if(IsServer(source_p))
{
if(ConfigServerHide.hide_servers)
{
/* set netsplit message to "me.name *.split" to still show
* that its a split, but hide the servers splitting
*/
ircsprintf(comment1,"%s *.split", me.name);
}
else
{
if((source_p->serv) && (source_p->serv->up))
strcpy(comment1, source_p->serv->up);
else
strcpy(comment1, "<Unknown>");
strcat(comment1," ");
strcat(comment1, source_p->name);
}
remove_dependents(client_p, source_p, from, comment, comment1);
if (source_p->servptr == &me)
{
sendto_realops_flags(FLAGS_ALL, L_ALL,
"%s was connected for %d seconds. %d/%d sendK/recvK.",
source_p->name, (int)(CurrentTime - source_p->firsttime),
source_p->localClient->sendK,
source_p->localClient->receiveK);
ilog(L_NOTICE, "%s was connected for %d seconds. %d/%d sendK/recvK.",
source_p->name, CurrentTime - source_p->firsttime,
source_p->localClient->sendK, source_p->localClient->receiveK);
}
}
exit_one_client(client_p, source_p, from, comment);
return client_p == source_p ? CLIENT_EXITED : 0;
}
