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/*
Miranda IM History Sweeper Light plugin
Copyright (C) 2002-2003 Sergey V. Gershovich
Copyright (C) 2006-2009 Boris Krasnovskiy
Copyright (C) 2010, 2011 tico-tico
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.
*/
#include "stdafx.h"
typedef struct
{
time_t time;
int keep;
} CriteriaStruct;
// build criteria
time_t BuildCriteria(int dwti)
{
time_t tim = time(0);
switch (dwti) {
case 0:
tim -= 1 * 24 * 3600;
break;
case 1:
tim -= 3 * 24 * 3600;
break;
case 2:
tim -= 7 * 24 * 3600;
break;
case 3:
tim -= 14 * 24 * 3600;
break;
case 4:
tim -= 30 * 24 * 3600;
break;
case 5:
tim -= 90 * 24 * 3600;
break;
case 6:
tim -= 180 * 24 * 3600;
break;
default:
tim -= 365 * 24 * 3600;
}
return tim;
}
// keep criteria
int KeepCriteria(int dwti)
{
switch (dwti) {
case 0:
return 1;
case 1:
return 2;
case 2:
return 5;
case 3:
return 10;
case 4:
return 20;
default:
return 50;
}
}
struct BEventData
{
MEVENT hDBEvent;
uint32_t CRC32;
uint32_t Timestamp;
};
static int CompareBookmarks(const void* p1, const void* p2)
{
return (uint8_t*)((BEventData*)p1)->hDBEvent - (uint8_t*)((BEventData*)p2)->hDBEvent;
}
static void GetBookmarks(MCONTACT hContact, BEventData** books, size_t* bookcnt)
{
*books = nullptr;
*bookcnt = 0;
DBVARIANT dbv;
if (db_get(hContact, "HistoryPlusPlus", "Bookmarks", &dbv) == 0) {
if (dbv.cpbVal > 2 && *(uint16_t*)dbv.pbVal >= sizeof(BEventData)) {
size_t recSize = *(uint16_t*)dbv.pbVal;
size_t numb = (dbv.cpbVal - sizeof(uint16_t)) / recSize;
BEventData* tbooks = (BEventData*)mir_alloc(sizeof(BEventData)*numb);
size_t tbookcnt = 0;
size_t i;
uint8_t* evs = dbv.pbVal + sizeof(uint16_t);
for (i = 0; i < numb; ++i) {
tbooks[tbookcnt++] = *(BEventData*)evs;
evs += recSize;
}
if (tbookcnt != 0) {
qsort(tbooks, tbookcnt, sizeof(BEventData), CompareBookmarks);
*bookcnt = tbookcnt;
*books = tbooks;
}
else mir_free(tbooks);
}
db_free(&dbv);
}
}
//Sweep history from specified contact
void SweepHistoryFromContact(MCONTACT hContact, CriteriaStruct Criteria, BOOL keepUnread)
{
int lPolicy;
if (hContact == NULL) // for system history
lPolicy = g_plugin.getByte("SweepSHistory", 0);
else // for contact history (or "SweepHistory" - default action)
lPolicy = g_plugin.getByte(hContact, "SweepHistory", g_plugin.getByte("SweepHistory", 0));
if (lPolicy == 0) // nothing to do
return;
int eventsCnt = db_event_count(hContact);
if (eventsCnt == 0)
return;
BOOL unsafe = g_plugin.getByte("UnsafeMode", 0);
BEventData *books, *item, ev = { 0 };
size_t bookcnt, btshift;
SetCursor(LoadCursor(nullptr, IDC_WAIT));
// switch off SAFETYMODE if necessary
if (unsafe)
db_set_safety_mode(FALSE);
GetBookmarks(hContact, &books, &bookcnt);
// Get first event
DB::ECPTR pCursor(DB::Events(hContact));
while (MEVENT hDBEvent = pCursor.FetchNext()) {
DBEVENTINFO dbei = {};
db_event_get(hDBEvent, &dbei);
// should we stop processing?
// lPolicy == 1 - for time criterion, lPolicy == 2 - keep N last events, lPolicy == 3 - delete all events
if ((lPolicy == 1 && (unsigned)Criteria.time < dbei.timestamp) || (lPolicy == 2 && Criteria.keep > --eventsCnt)) break;
bool doDelete = true;
if (!(dbei.flags & (DBEF_SENT | DBEF_READ)) && keepUnread)
doDelete = false; // keep unread events
if (bookcnt != 0) { // keep bookmarks
ev.hDBEvent = hDBEvent;
item = (BEventData*)bsearch(&ev, books, bookcnt, sizeof(BEventData), CompareBookmarks);
if (item != nullptr && item->Timestamp == dbei.timestamp) {
doDelete = FALSE;
btshift = (--bookcnt - (item - books)) * sizeof(BEventData);
if (btshift)
memmove(item, item + 1, btshift);
}
}
if (doDelete)
pCursor.DeleteEvent();
}
mir_free(books);
// switch ON safety mode as fast as we can to avoid DB corruption
if (unsafe)
db_set_safety_mode(TRUE);
SetCursor(LoadCursor(nullptr, IDC_ARROW));
}
// shutdown action
void ShutdownAction(void)
{
CriteriaStruct Criteria;
Criteria.keep = KeepCriteria(g_plugin.getByte("StartupShutdownKeep"));
Criteria.time = BuildCriteria(g_plugin.getByte("StartupShutdownOlder"));
SweepHistoryFromContact(NULL, Criteria, FALSE); // sweep system history, keepunread==0
for (auto &hContact : Contacts())
SweepHistoryFromContact(hContact, Criteria, TRUE); // sweep contact history, keepunread==1
}
int OnWindowEvent(WPARAM uType, LPARAM lParam)
{
auto *pDlg = (CSrmmBaseDialog *)lParam;
switch (uType) {
case MSG_WINDOW_EVT_OPENING:
g_hWindows.insert(PVOID(pDlg->m_hContact));
SetSrmmIcon(pDlg->m_hContact);
break;
case MSG_WINDOW_EVT_CLOSE:
if (g_plugin.getByte("SweepOnClose", 0)) {
CriteriaStruct Criteria;
Criteria.keep = KeepCriteria(g_plugin.getByte("StartupShutdownKeep"));
Criteria.time = BuildCriteria(g_plugin.getByte("StartupShutdownOlder"));
SweepHistoryFromContact(pDlg->m_hContact, Criteria, TRUE);
}
for (auto &it : g_hWindows.rev_iter())
if (it == PVOID(pDlg->m_hContact))
g_hWindows.removeItem(&it);
break;
}
return 0;
}
void SetSrmmIcon(MCONTACT hContact)
{
int sweep = g_plugin.getByte(hContact, "SweepHistory");
for (int i = 0; i < 4; i++)
Srmm_SetIconFlags(hContact, MODULENAME, i, (sweep == i) ? 0 : MBF_HIDDEN);
}
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