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|
// ---------------------------------------------------------------------------80
// ICQ plugin for Miranda Instant Messenger
// ________________________________________
//
// Copyright © 2000-2001 Richard Hughes, Roland Rabien, Tristan Van de Vreede
// Copyright © 2001-2002 Jon Keating, Richard Hughes
// Copyright © 2002-2004 Martin Öberg, Sam Kothari, Robert Rainwater
// Copyright © 2004-2010 Joe Kucera
// Copyright © 2012-2018 Miranda NG team
//
// 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
// -----------------------------------------------------------------------------
// DESCRIPTION:
//
// Handles packet & message cookies
// -----------------------------------------------------------------------------
#include "stdafx.h"
void CIcqProto::RemoveExpiredCookies()
{
time_t tNow = time(nullptr);
for (int i = cookies.getCount() - 1; i >= 0; i--)
if ((cookies[i].dwTime + COOKIE_TIMEOUT) < tNow)
cookies.remove(i);
}
// Generate and allocate cookie
DWORD CIcqProto::AllocateCookie(BYTE bType, WORD wIdent, MCONTACT hContact, void *pvExtra)
{
mir_cslock l(cookieMutex);
DWORD dwThisSeq = wCookieSeq++;
dwThisSeq &= 0x7FFF;
dwThisSeq |= wIdent << 0x10;
icq_cookie_info *p = new icq_cookie_info();
p->bType = bType;
p->dwCookie = dwThisSeq;
p->hContact = hContact;
p->pvExtra = pvExtra;
p->dwTime = time(nullptr);
cookies.insert(p);
return dwThisSeq;
}
DWORD CIcqProto::GenerateCookie(WORD wIdent)
{
mir_cslock l(cookieMutex);
DWORD dwThisSeq = wCookieSeq++;
dwThisSeq &= 0x7FFF;
dwThisSeq |= wIdent << 0x10;
return dwThisSeq;
}
int CIcqProto::GetCookieType(DWORD dwCookie)
{
mir_cslock l(cookieMutex);
int i = cookies.getIndex((icq_cookie_info*)&dwCookie);
if (i != -1)
i = cookies[i].bType;
return i;
}
int CIcqProto::FindCookie(DWORD dwCookie, MCONTACT *phContact, void **ppvExtra)
{
mir_cslock l(cookieMutex);
int i = cookies.getIndex((icq_cookie_info*)&dwCookie);
if (i != -1) {
if (phContact)
*phContact = cookies[i].hContact;
if (ppvExtra)
*ppvExtra = cookies[i].pvExtra;
// Cookie found
return 1;
}
return 0;
}
int CIcqProto::FindCookieByData(void *pvExtra, DWORD *pdwCookie, MCONTACT *phContact)
{
mir_cslock l(cookieMutex);
for (auto &it : cookies) {
if (pvExtra == it->pvExtra) {
if (phContact)
*phContact = it->hContact;
if (pdwCookie)
*pdwCookie = it->dwCookie;
// Cookie found
return 1;
}
}
return 0;
}
int CIcqProto::FindCookieByType(BYTE bType, DWORD *pdwCookie, MCONTACT *phContact, void **ppvExtra)
{
mir_cslock l(cookieMutex);
for (auto &it : cookies) {
if (bType == it->bType) {
if (pdwCookie)
*pdwCookie = it->dwCookie;
if (phContact)
*phContact = it->hContact;
if (ppvExtra)
*ppvExtra = it->pvExtra;
// Cookie found
return 1;
}
}
return 0;
}
int CIcqProto::FindMessageCookie(DWORD dwMsgID1, DWORD dwMsgID2, DWORD *pdwCookie, MCONTACT *phContact, cookie_message_data **ppvExtra)
{
mir_cslock l(cookieMutex);
for (auto &it : cookies) {
if (it->bType == CKT_MESSAGE || it->bType == CKT_FILE || it->bType == CKT_REVERSEDIRECT) {
// message cookie found
cookie_message_data *pCookie = (cookie_message_data*)it->pvExtra;
if (pCookie->dwMsgID1 == dwMsgID1 && pCookie->dwMsgID2 == dwMsgID2) {
if (phContact)
*phContact = it->hContact;
if (pdwCookie)
*pdwCookie = it->dwCookie;
if (ppvExtra)
*ppvExtra = pCookie;
// Cookie found
return 1;
}
}
}
return 0;
}
void CIcqProto::FreeCookie(DWORD dwCookie)
{
mir_cslock l(cookieMutex);
int i = cookies.getIndex((icq_cookie_info*)&dwCookie);
if (i != -1) // Cookie found, remove from list
cookies.remove(i);
RemoveExpiredCookies();
}
void CIcqProto::FreeCookieByData(BYTE bType, void *pvExtra)
{
mir_cslock l(cookieMutex);
for (auto &it : cookies) {
if (bType == it->bType && pvExtra == it->pvExtra) {
// Cookie found, remove from list
cookies.remove(it);
break;
}
}
RemoveExpiredCookies();
}
void CIcqProto::ReleaseCookie(DWORD dwCookie)
{
mir_cslock l(cookieMutex);
int i = cookies.getIndex(( icq_cookie_info* )&dwCookie );
if (i != -1) { // Cookie found, remove from list
SAFE_FREE((void**)&cookies[i].pvExtra);
cookies.remove(i);
}
RemoveExpiredCookies();
}
void CIcqProto::InitMessageCookie(cookie_message_data *pCookie)
{
DWORD dwMsgID1;
DWORD dwMsgID2;
do {
// ensure that message ids are unique
dwMsgID1 = time(nullptr);
dwMsgID2 = RandRange(0, 0x0FFFF);
}
while (FindMessageCookie(dwMsgID1, dwMsgID2, nullptr, nullptr, nullptr));
if (pCookie) {
pCookie->dwMsgID1 = dwMsgID1;
pCookie->dwMsgID2 = dwMsgID2;
}
}
cookie_message_data* CIcqProto::CreateMessageCookie(WORD bMsgType, BYTE bAckType)
{
cookie_message_data *pCookie = (cookie_message_data*)SAFE_MALLOC(sizeof(cookie_message_data));
if (pCookie) {
pCookie->bMessageType = bMsgType;
pCookie->nAckType = bAckType;
InitMessageCookie(pCookie);
}
return pCookie;
}
cookie_message_data* CIcqProto::CreateMessageCookieData(BYTE bMsgType, MCONTACT hContact, DWORD dwUin, int bUseSrvRelay)
{
BYTE bAckType;
WORD wStatus = getContactStatus(hContact);
if (!getByte(hContact, "SlowSend", getByte("SlowSend", DEFAULT_SLOWSEND)) || (!dwUin && wStatus == ID_STATUS_OFFLINE))
bAckType = ACKTYPE_NONE;
else if (bUseSrvRelay)
bAckType = ACKTYPE_CLIENT;
else
bAckType = ACKTYPE_SERVER;
cookie_message_data* pCookieData = CreateMessageCookie(bMsgType, bAckType);
// set flag for offline messages - to allow proper error handling
if (wStatus == ID_STATUS_OFFLINE || wStatus == ID_STATUS_INVISIBLE)
pCookieData->isOffline = TRUE;
return pCookieData;
}
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