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/*
Miranda NG: the free IM client for Microsoft* Windows*
Copyright (c) 2012-14 Miranda NG project (http://miranda-ng.org),
Copyright (c) 2000-08 Miranda ICQ/IM project,
all portions of this codebase are copyrighted to the people
listed in contributors.txt.
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
/*
* Author Artem Shpynov aka FYR
* Copyright 2000-2008 Artem Shpynov
*/
//////////////////////////////////////////////////////////////////////////
// Module to Request Away Messages
#include "hdr/modern_commonheaders.h"
#include "hdr/modern_awaymsg.h"
#include "hdr/modern_sync.h"
#define AMASKPERIOD 3000
static CRITICAL_SECTION amCS;
static LIST<void> amItems(10, PtrKeySortT);
static HANDLE hamProcessEvent = NULL;
static DWORD amRequestTick = 0;
static int amAddHandleToChain(HANDLE hContact);
static HANDLE amGetCurrentChain();
/*
* Add contact handle to requests queue
*/
static int amAddHandleToChain(HANDLE hContact)
{
mir_cslockfull lck(amCS);
if (amItems.find(hContact) != NULL)
return 0;
amItems.insert(hContact);
lck.unlock();
SetEvent(hamProcessEvent);
return 1;
}
/*
* Gets handle from queue for request
*/
static HANDLE amGetCurrentChain()
{
mir_cslock lck(amCS);
if (amItems.getCount() == 0)
return NULL;
HANDLE res = amItems[0];
amItems.remove(0);
return res;
}
/*
* Tread sub to ask protocol to retrieve away message
*/
static void amThreadProc(void *)
{
thread_catcher lck(g_hAwayMsgThread);
ClcCacheEntry dnce;
memset(&dnce, 0, sizeof(dnce));
while (!MirandaExiting()) {
HANDLE hContact = amGetCurrentChain();
while (hContact) {
DWORD time = GetTickCount();
if ((time-amRequestTick) < AMASKPERIOD) {
SleepEx(AMASKPERIOD-(time-amRequestTick)+10, TRUE);
if ( MirandaExiting())
return;
}
CListSettings_FreeCacheItemData(&dnce);
dnce.hContact = (HANDLE)hContact;
Sync(CLUI_SyncGetPDNCE, (WPARAM) 0, (LPARAM)&dnce);
HANDLE ACK = 0;
if (dnce.ApparentMode != ID_STATUS_OFFLINE) //don't ask if contact is always invisible (should be done with protocol)
ACK = (HANDLE)CallContactService(hContact,PSS_GETAWAYMSG, 0, 0);
if ( !ACK) {
ACKDATA ack;
ack.hContact = hContact;
ack.type = ACKTYPE_AWAYMSG;
ack.result = ACKRESULT_FAILED;
if (dnce.m_cache_cszProto)
ack.szModule = dnce.m_cache_cszProto;
else
ack.szModule = NULL;
ClcDoProtoAck(hContact, &ack);
}
CListSettings_FreeCacheItemData(&dnce);
amRequestTick = time;
hContact = amGetCurrentChain();
if (hContact) {
DWORD i=0;
do {
i++;
SleepEx(50, TRUE);
}
while (i < AMASKPERIOD/50 && !MirandaExiting());
}
else break;
if ( MirandaExiting())
return;
}
WaitForSingleObjectEx(hamProcessEvent, INFINITE, TRUE);
ResetEvent(hamProcessEvent);
if ( MirandaExiting())
break;
}
}
BOOL amWakeThread()
{
if (hamProcessEvent && g_hAwayMsgThread) {
SetEvent(hamProcessEvent);
return TRUE;
}
return FALSE;
}
/*
* Sub to be called outside on status changing to retrieve away message
*/
void amRequestAwayMsg(HANDLE hContact)
{
if ( !g_CluiData.bInternalAwayMsgDiscovery || !hContact)
return;
//Do not re-ask for chat rooms
char *szProto = GetContactProto(hContact);
if (szProto != NULL && !db_get_b(hContact, szProto, "ChatRoom", 0))
amAddHandleToChain(hContact);
}
void InitAwayMsgModule()
{
InitializeCriticalSection(&amCS);
hamProcessEvent = CreateEvent(NULL,FALSE,FALSE,NULL);
g_hAwayMsgThread = mir_forkthread(amThreadProc, 0);
}
void UninitAwayMsgModule()
{
SetEvent(hamProcessEvent);
while (g_hAwayMsgThread)
SleepEx(50, TRUE);
CloseHandle(hamProcessEvent);
DeleteCriticalSection(&amCS);
}
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