void Shutdown(void* parg)
{
static CCriticalSection cs_Shutdown;
static bool fTaken;
bool fFirstThread;
CRITICAL_BLOCK(cs_Shutdown)
{
fFirstThread = !fTaken;
fTaken = true;
}
static bool fExit;
if (fFirstThread)
{
fShutdown = true;
nTransactionsUpdated++;
DBFlush(false);
StopNode();
DBFlush(true);
boost::filesystem::remove(GetPidFile());
CreateThread(ExitTimeout, NULL);
Sleep(50);
printf("namecoin exiting\n\n");
fExit = true;
exit(0);
}
else
{
while (!fExit)
Sleep(500);
Sleep(100);
ExitThread(0);
}
}
//will create the offset if it needs to
DWORD GetModuleNameOfs(const char *szName)
{
struct DBModuleName dbmn;
int nameLen;
DWORD ofsNew,ofsExisting;
char *mod;
ofsExisting=FindExistingModuleNameOfs(szName);
if(ofsExisting) return ofsExisting;
nameLen = (int)strlen(szName);
//need to create the module name
ofsNew=CreateNewSpace(nameLen+offsetof(struct DBModuleName,name));
dbmn.signature=DBMODULENAME_SIGNATURE;
dbmn.cbName=nameLen;
dbmn.ofsNext=dbHeader.ofsFirstModuleName;
dbHeader.ofsFirstModuleName=ofsNew;
DBWrite(0,&dbHeader,sizeof(dbHeader));
DBWrite(ofsNew,&dbmn,offsetof(struct DBModuleName,name));
DBWrite(ofsNew+offsetof(struct DBModuleName,name),(PVOID)szName,nameLen);
DBFlush(0);
//add to cache
mod = (char*)HeapAlloc(hModHeap,0,nameLen+1);
strcpy(mod,szName);
AddToList(mod, nameLen, ofsNew);
//quit
return ofsNew;
}
static INT_PTR AddContact(WPARAM wParam,LPARAM lParam)
{
struct DBContact dbc;
DWORD ofsNew;
log0("add contact");
EnterCriticalSection(&csDbAccess);
ofsNew=CreateNewSpace(sizeof(struct DBContact));
dbc.signature=DBCONTACT_SIGNATURE;
dbc.eventCount=0;
dbc.ofsFirstEvent=dbc.ofsLastEvent=0;
dbc.ofsFirstSettings=0;
dbc.ofsNext=dbHeader.ofsFirstContact;
dbc.ofsFirstUnreadEvent=0;
dbc.timestampFirstUnread=0;
dbHeader.ofsFirstContact=ofsNew;
dbHeader.contactCount++;
DBWrite(ofsNew,&dbc,sizeof(struct DBContact));
DBWrite(0,&dbHeader,sizeof(dbHeader));
DBFlush(0);
AddToCachedContactList((HANDLE)ofsNew, -1);
LeaveCriticalSection(&csDbAccess);
NotifyEventHooks(hContactAddedEvent,(WPARAM)ofsNew,0);
return (INT_PTR)ofsNew;
}
STDMETHODIMP_(MCONTACT) CDb3Mmap::AddContact()
{
DWORD ofsNew;
log0("add contact");
DBContact dbc = { 0 };
dbc.signature = DBCONTACT_SIGNATURE;
{
mir_cslock lck(m_csDbAccess);
ofsNew = CreateNewSpace(sizeof(DBContact));
dbc.ofsNext = m_dbHeader.ofsFirstContact;
dbc.dwContactID = m_dwMaxContactId++;
m_dbHeader.ofsFirstContact = ofsNew;
m_dbHeader.contactCount++;
DBWrite(ofsNew, &dbc, sizeof(DBContact));
DBWrite(0, &m_dbHeader, sizeof(m_dbHeader));
DBFlush(0);
}
DBCachedContact *cc = m_cache->AddContactToCache(dbc.dwContactID);
cc->dwDriverData = ofsNew;
NotifyEventHooks(hContactAddedEvent, dbc.dwContactID, 0);
return dbc.dwContactID;
}
// will create the offset if it needs to
DWORD CDb3Mmap::GetModuleNameOfs(const char *szName)
{
DWORD ofsExisting = FindExistingModuleNameOfs(szName);
if (ofsExisting)
return ofsExisting;
if (m_bReadOnly)
return 0;
int nameLen = (int)mir_strlen(szName);
// need to create the module name
DWORD ofsNew = CreateNewSpace(nameLen + offsetof(struct DBModuleName, name));
DBModuleName dbmn;
dbmn.signature = DBMODULENAME_SIGNATURE;
dbmn.cbName = nameLen;
dbmn.ofsNext = m_dbHeader.ofsModuleNames;
m_dbHeader.ofsModuleNames = ofsNew;
DBWrite(ofsNew, &dbmn, offsetof(struct DBModuleName, name));
DBWrite(ofsNew + offsetof(struct DBModuleName, name), (PVOID)szName, nameLen);
DBWrite(0, &m_dbHeader, sizeof(m_dbHeader));
DBFlush(0);
// add to cache
char *mod = (char*)HeapAlloc(m_hModHeap, 0, nameLen + 1);
mir_strcpy(mod, szName);
AddToList(mod, ofsNew);
// quit
return ofsNew;
}
static int CacheSetSafetyMode(WPARAM wParam,LPARAM lParam)
{
EnterCriticalSection(&csDbAccess);
safetyMode=wParam;
LeaveCriticalSection(&csDbAccess);
DBFlush(1);
return 0;
}
STDMETHODIMP_(BOOL) CDb3Mmap::MarkEventRead(MCONTACT contactID, HANDLE hDbEvent)
{
DBCachedContact *cc;
if (contactID) {
if ((cc = m_cache->GetCachedContact(contactID)) == NULL)
return -1;
if (cc->IsSub())
if ((cc = m_cache->GetCachedContact(cc->parentID)) == NULL)
return -1;
}
else cc = NULL;
mir_cslockfull lck(m_csDbAccess);
DWORD ofsContact = (cc) ? cc->dwDriverData : m_dbHeader.ofsUser;
DBContact dbc = *(DBContact*)DBRead(ofsContact, sizeof(DBContact), NULL);
DBEvent *dbe = (DBEvent*)DBRead((DWORD)hDbEvent, sizeof(DBEvent), NULL);
if (dbe->signature != DBEVENT_SIGNATURE || dbc.signature != DBCONTACT_SIGNATURE)
return -1;
if (dbe->markedRead())
return dbe->flags;
// log1("mark read @ %08x", hContact);
dbe->flags |= DBEF_READ;
DBWrite((DWORD)hDbEvent, dbe, sizeof(DBEvent));
BOOL ret = dbe->flags;
if (dbc.ofsFirstUnread == (DWORD)hDbEvent) {
for (;;) {
if (dbe->ofsNext == 0) {
dbc.ofsFirstUnread = 0;
dbc.tsFirstUnread = 0;
break;
}
DWORD ofsThis = dbe->ofsNext;
dbe = (DBEvent*)DBRead(ofsThis, sizeof(DBEvent), NULL);
if (!dbe->markedRead()) {
dbc.ofsFirstUnread = ofsThis;
dbc.tsFirstUnread = dbe->timestamp;
break;
}
}
}
DBWrite(ofsContact, &dbc, sizeof(DBContact));
DBFlush(0);
lck.unlock();
NotifyEventHooks(hEventMarkedRead, contactID, (LPARAM)hDbEvent);
return ret;
}
static INT_PTR AddEvent(WPARAM wParam,LPARAM lParam)
{
DBEVENTINFO *dbei=(DBEVENTINFO*)lParam;
struct DBContact dbc;
struct DBEvent dbe,*dbeTest;
DWORD ofsNew,ofsModuleName,ofsContact,ofsThis;
if(dbei==NULL||dbei->cbSize!=sizeof(DBEVENTINFO)) return 0;
if(dbei->timestamp==0) return 0;
if (NotifyEventHooks(hEventFilterAddedEvent,wParam,lParam)) {
return 0;
}
EnterCriticalSection(&csDbAccess);
if(wParam==0) ofsContact=dbHeader.ofsUser;
else ofsContact=wParam;
dbc=*(struct DBContact*)DBRead(ofsContact,sizeof(struct DBContact),NULL);
if(dbc.signature!=DBCONTACT_SIGNATURE) {
LeaveCriticalSection(&csDbAccess);
return 0;
}
ofsNew=CreateNewSpace(offsetof(struct DBEvent,blob)+dbei->cbBlob);
ofsModuleName=GetModuleNameOfs(dbei->szModule);
dbe.signature=DBEVENT_SIGNATURE;
dbe.ofsModuleName=ofsModuleName;
dbe.timestamp=dbei->timestamp;
dbe.flags=dbei->flags;
dbe.eventType=dbei->eventType;
dbe.cbBlob=dbei->cbBlob;
//find where to put it - sort by timestamp
if(dbc.eventCount==0) {
dbe.ofsPrev=wParam;
dbe.ofsNext=0;
dbe.flags|=DBEF_FIRST;
dbc.ofsFirstEvent=dbc.ofsLastEvent=ofsNew;
}
else {
dbeTest=(struct DBEvent*)DBRead(dbc.ofsFirstEvent,sizeof(struct DBEvent),NULL);
// Should new event be placed before first event in chain?
if (dbei->timestamp < dbeTest->timestamp) {
dbe.ofsPrev=wParam;
dbe.ofsNext=dbc.ofsFirstEvent;
dbe.flags|=DBEF_FIRST;
dbc.ofsFirstEvent=ofsNew;
dbeTest=(struct DBEvent*)DBRead(dbe.ofsNext,sizeof(struct DBEvent),NULL);
dbeTest->flags&=~DBEF_FIRST;
dbeTest->ofsPrev=ofsNew;
DBWrite(dbe.ofsNext,dbeTest,sizeof(struct DBEvent));
}
else {
// Loop through the chain, starting at the end
ofsThis = dbc.ofsLastEvent;
dbeTest = (struct DBEvent*)DBRead(ofsThis, sizeof(struct DBEvent), NULL);
for(;;) {
// If the new event's timesstamp is equal to or greater than the
// current dbevent, it will be inserted after. If not, continue
// with the previous dbevent in chain.
if (dbe.timestamp >= dbeTest->timestamp) {
dbe.ofsPrev = ofsThis;
dbe.ofsNext = dbeTest->ofsNext;
dbeTest->ofsNext = ofsNew;
DBWrite(ofsThis, dbeTest, sizeof(struct DBEvent));
if (dbe.ofsNext == 0)
dbc.ofsLastEvent = ofsNew;
else {
dbeTest = (struct DBEvent*)DBRead(dbe.ofsNext, sizeof(struct DBEvent), NULL);
dbeTest->ofsPrev = ofsNew;
DBWrite(dbe.ofsNext, dbeTest, sizeof(struct DBEvent));
}
break;
}
ofsThis = dbeTest->ofsPrev;
dbeTest = (struct DBEvent*)DBRead(ofsThis, sizeof(struct DBEvent), NULL);
}
}
}
dbc.eventCount++;
if(!(dbe.flags&(DBEF_READ|DBEF_SENT))) {
if(dbe.timestamp<dbc.timestampFirstUnread || dbc.timestampFirstUnread==0) {
dbc.timestampFirstUnread=dbe.timestamp;
dbc.ofsFirstUnreadEvent=ofsNew;
}
}
DBWrite(ofsContact,&dbc,sizeof(struct DBContact));
DBWrite(ofsNew,&dbe,offsetof(struct DBEvent,blob));
DBWrite(ofsNew+offsetof(struct DBEvent,blob),dbei->pBlob,dbei->cbBlob);
DBFlush(0);
LeaveCriticalSection(&csDbAccess);
log1("add event @ %08x",ofsNew);
NotifyEventHooks(hEventAddedEvent,wParam,(LPARAM)ofsNew);
return (INT_PTR)ofsNew;
}
static INT_PTR DeleteEvent(WPARAM wParam,LPARAM lParam)
{
struct DBContact dbc;
DWORD ofsContact,ofsThis;
struct DBEvent dbe,*dbeNext,*dbePrev;
EnterCriticalSection(&csDbAccess);
if(wParam==0) ofsContact=dbHeader.ofsUser;
else ofsContact=wParam;
dbc=*(struct DBContact*)DBRead(ofsContact,sizeof(struct DBContact),NULL);
dbe=*(struct DBEvent*)DBRead(lParam,sizeof(struct DBEvent),NULL);
if(dbc.signature!=DBCONTACT_SIGNATURE || dbe.signature!=DBEVENT_SIGNATURE) {
LeaveCriticalSection(&csDbAccess);
return 1;
}
log1("delete event @ %08x",wParam);
LeaveCriticalSection(&csDbAccess);
//call notifier while outside mutex
NotifyEventHooks(hEventDeletedEvent,wParam,lParam);
//get back in
EnterCriticalSection(&csDbAccess);
dbc=*(struct DBContact*)DBRead(ofsContact,sizeof(struct DBContact),NULL);
dbe=*(struct DBEvent*)DBRead(lParam,sizeof(struct DBEvent),NULL);
//check if this was the first unread, if so, recalc the first unread
if(dbc.ofsFirstUnreadEvent==(DWORD)lParam) {
dbeNext=&dbe;
for(;;) {
if(dbeNext->ofsNext==0) {
dbc.ofsFirstUnreadEvent=0;
dbc.timestampFirstUnread=0;
break;
}
ofsThis=dbeNext->ofsNext;
dbeNext=(struct DBEvent*)DBRead(ofsThis,sizeof(struct DBEvent),NULL);
if(!(dbeNext->flags&(DBEF_READ|DBEF_SENT))) {
dbc.ofsFirstUnreadEvent=ofsThis;
dbc.timestampFirstUnread=dbeNext->timestamp;
break;
}
}
}
//get previous and next events in chain and change offsets
if(dbe.flags&DBEF_FIRST) {
if(dbe.ofsNext==0) {
dbc.ofsFirstEvent=dbc.ofsLastEvent=0;
}
else {
dbeNext=(struct DBEvent*)DBRead(dbe.ofsNext,sizeof(struct DBEvent),NULL);
dbeNext->flags|=DBEF_FIRST;
dbeNext->ofsPrev=dbe.ofsPrev;
DBWrite(dbe.ofsNext,dbeNext,sizeof(struct DBEvent));
dbc.ofsFirstEvent=dbe.ofsNext;
}
}
else {
if(dbe.ofsNext==0) {
dbePrev=(struct DBEvent*)DBRead(dbe.ofsPrev,sizeof(struct DBEvent),NULL);
dbePrev->ofsNext=0;
DBWrite(dbe.ofsPrev,dbePrev,sizeof(struct DBEvent));
dbc.ofsLastEvent=dbe.ofsPrev;
}
else {
dbePrev=(struct DBEvent*)DBRead(dbe.ofsPrev,sizeof(struct DBEvent),NULL);
dbePrev->ofsNext=dbe.ofsNext;
DBWrite(dbe.ofsPrev,dbePrev,sizeof(struct DBEvent));
dbeNext=(struct DBEvent*)DBRead(dbe.ofsNext,sizeof(struct DBEvent),NULL);
dbeNext->ofsPrev=dbe.ofsPrev;
DBWrite(dbe.ofsNext,dbeNext,sizeof(struct DBEvent));
}
}
//delete event
DeleteSpace(lParam,offsetof(struct DBEvent,blob)+dbe.cbBlob);
//decrement event count
dbc.eventCount--;
DBWrite(ofsContact,&dbc,sizeof(struct DBContact));
DBFlush(0);
//quit
LeaveCriticalSection(&csDbAccess);
return 0;
}
STDMETHODIMP_(BOOL) CDb3Mmap::DeleteContactSetting(MCONTACT contactID, LPCSTR szModule, LPCSTR szSetting)
{
if (!szModule || !szSetting)
return 1;
// the db format can't tolerate more than 255 bytes of space (incl. null) for settings+module name
int settingNameLen = (int)mir_strlen(szSetting);
int moduleNameLen = (int)mir_strlen(szModule);
if (settingNameLen > 0xFE) {
#ifdef _DEBUG
OutputDebugStringA("DeleteContactSetting() got a > 255 setting name length. \n");
#endif
return 1;
}
if (moduleNameLen > 0xFE) {
#ifdef _DEBUG
OutputDebugStringA("DeleteContactSetting() got a > 255 module name length. \n");
#endif
return 1;
}
MCONTACT saveContact = contactID;
{
mir_cslock lck(m_csDbAccess);
char *szCachedSettingName = m_cache->GetCachedSetting(szModule, szSetting, moduleNameLen, settingNameLen);
if (szCachedSettingName[-1] == 0) { // it's not a resident variable
DWORD ofsModuleName = GetModuleNameOfs(szModule);
DWORD ofsContact = GetContactOffset(contactID);
DBContact *dbc = (DBContact*)DBRead(ofsContact, NULL);
if (dbc->signature != DBCONTACT_SIGNATURE)
return 1;
// make sure the module group exists
DWORD ofsSettingsGroup = GetSettingsGroupOfsByModuleNameOfs(dbc, ofsModuleName);
if (ofsSettingsGroup == 0)
return 1;
// find if the setting exists
DWORD ofsBlobPtr = ofsSettingsGroup + offsetof(DBContactSettings, blob);
int bytesRemaining;
PBYTE pBlob = (PBYTE)DBRead(ofsBlobPtr, &bytesRemaining);
while (pBlob[0]) {
NeedBytes(settingNameLen + 1);
if (pBlob[0] == settingNameLen && !memcmp(pBlob + 1, szSetting, settingNameLen))
break;
NeedBytes(1);
MoveAlong(pBlob[0] + 1);
NeedBytes(3);
MoveAlong(1 + GetSettingValueLength(pBlob));
NeedBytes(1);
}
if (!pBlob[0]) //setting didn't exist
return 1;
// bin it
MoveAlong(1 + settingNameLen);
NeedBytes(3);
int nameLen = 1 + settingNameLen;
int valLen = 1 + GetSettingValueLength(pBlob);
DWORD ofsSettingToCut = ofsBlobPtr - nameLen;
MoveAlong(valLen);
NeedBytes(1);
while (pBlob[0]) {
MoveAlong(pBlob[0] + 1);
NeedBytes(3);
MoveAlong(1 + GetSettingValueLength(pBlob));
NeedBytes(1);
}
DBMoveChunk(ofsSettingToCut, ofsSettingToCut + nameLen + valLen, ofsBlobPtr + 1 - ofsSettingToCut);
DBFlush(1);
}
m_cache->GetCachedValuePtr(saveContact, szCachedSettingName, -1);
}
// notify
DBCONTACTWRITESETTING dbcws = { 0 };
dbcws.szModule = szModule;
dbcws.szSetting = szSetting;
dbcws.value.type = DBVT_DELETED;
NotifyEventHooks(hSettingChangeEvent, saveContact, (LPARAM)&dbcws);
return 0;
}
STDMETHODIMP_(BOOL) CDb3Mmap::WriteContactSetting(MCONTACT contactID, DBCONTACTWRITESETTING *dbcws)
{
if (dbcws == NULL || dbcws->szSetting == NULL || dbcws->szModule == NULL || m_bReadOnly)
return 1;
// the db format can't tolerate more than 255 bytes of space (incl. null) for settings+module name
int settingNameLen = (int)mir_strlen(dbcws->szSetting);
int moduleNameLen = (int)mir_strlen(dbcws->szModule);
if (settingNameLen > 0xFE) {
#ifdef _DEBUG
OutputDebugStringA("WriteContactSetting() got a > 255 setting name length. \n");
#endif
return 1;
}
if (moduleNameLen > 0xFE) {
#ifdef _DEBUG
OutputDebugStringA("WriteContactSetting() got a > 255 module name length. \n");
#endif
return 1;
}
// used for notifications
DBCONTACTWRITESETTING dbcwNotif = *dbcws;
if (dbcwNotif.value.type == DBVT_WCHAR) {
if (dbcwNotif.value.pszVal != NULL) {
char* val = mir_utf8encodeW(dbcwNotif.value.pwszVal);
if (val == NULL)
return 1;
dbcwNotif.value.pszVal = (char*)alloca(mir_strlen(val) + 1);
mir_strcpy(dbcwNotif.value.pszVal, val);
mir_free(val);
dbcwNotif.value.type = DBVT_UTF8;
}
else return 1;
}
if (dbcwNotif.szModule == NULL || dbcwNotif.szSetting == NULL)
return 1;
DBCONTACTWRITESETTING dbcwWork = dbcwNotif;
mir_ptr<BYTE> pEncoded(NULL);
bool bIsEncrypted = false;
switch (dbcwWork.value.type) {
case DBVT_BYTE: case DBVT_WORD: case DBVT_DWORD:
break;
case DBVT_ASCIIZ: case DBVT_UTF8:
bIsEncrypted = m_bEncrypted || IsSettingEncrypted(dbcws->szModule, dbcws->szSetting);
LBL_WriteString:
if (dbcwWork.value.pszVal == NULL)
return 1;
dbcwWork.value.cchVal = (WORD)mir_strlen(dbcwWork.value.pszVal);
if (bIsEncrypted) {
size_t len;
BYTE *pResult = m_crypto->encodeString(dbcwWork.value.pszVal, &len);
if (pResult != NULL) {
pEncoded = dbcwWork.value.pbVal = pResult;
dbcwWork.value.cpbVal = (WORD)len;
dbcwWork.value.type = DBVT_ENCRYPTED;
}
}
break;
case DBVT_UNENCRYPTED:
dbcwNotif.value.type = dbcwWork.value.type = DBVT_UTF8;
goto LBL_WriteString;
case DBVT_BLOB: case DBVT_ENCRYPTED:
if (dbcwWork.value.pbVal == NULL)
return 1;
break;
default:
return 1;
}
mir_cslockfull lck(m_csDbAccess);
DWORD ofsBlobPtr, ofsContact = GetContactOffset(contactID);
if (ofsContact == 0) {
_ASSERT(false); // contact doesn't exist?
return 2;
}
char *szCachedSettingName = m_cache->GetCachedSetting(dbcwWork.szModule, dbcwWork.szSetting, moduleNameLen, settingNameLen);
log3("set [%08p] %s (%p)", hContact, szCachedSettingName, szCachedSettingName);
// we don't cache blobs and passwords
if (dbcwWork.value.type != DBVT_BLOB && dbcwWork.value.type != DBVT_ENCRYPTED && !bIsEncrypted) {
DBVARIANT *pCachedValue = m_cache->GetCachedValuePtr(contactID, szCachedSettingName, 1);
if (pCachedValue != NULL) {
bool bIsIdentical = false;
if (pCachedValue->type == dbcwWork.value.type) {
switch (dbcwWork.value.type) {
case DBVT_BYTE: bIsIdentical = pCachedValue->bVal == dbcwWork.value.bVal; break;
case DBVT_WORD: bIsIdentical = pCachedValue->wVal == dbcwWork.value.wVal; break;
case DBVT_DWORD: bIsIdentical = pCachedValue->dVal == dbcwWork.value.dVal; break;
case DBVT_UTF8:
case DBVT_ASCIIZ: bIsIdentical = mir_strcmp(pCachedValue->pszVal, dbcwWork.value.pszVal) == 0; break;
}
if (bIsIdentical)
return 0;
}
m_cache->SetCachedVariant(&dbcwWork.value, pCachedValue);
}
if (szCachedSettingName[-1] != 0) {
lck.unlock();
log2(" set resident as %s (%p)", printVariant(&dbcwWork.value), pCachedValue);
NotifyEventHooks(hSettingChangeEvent, contactID, (LPARAM)&dbcwWork);
return 0;
}
}
else m_cache->GetCachedValuePtr(contactID, szCachedSettingName, -1);
log1(" write database as %s", printVariant(&dbcwWork.value));
DWORD ofsModuleName = GetModuleNameOfs(dbcwWork.szModule);
DBContact dbc = *(DBContact*)DBRead(ofsContact, NULL);
if (dbc.signature != DBCONTACT_SIGNATURE)
return 1;
// make sure the module group exists
PBYTE pBlob;
int bytesRequired, bytesRemaining;
DBContactSettings dbcs;
DWORD ofsSettingsGroup = GetSettingsGroupOfsByModuleNameOfs(&dbc, ofsModuleName);
if (ofsSettingsGroup == 0) { //module group didn't exist - make it
switch (dbcwWork.value.type) {
case DBVT_ASCIIZ: case DBVT_UTF8:
bytesRequired = dbcwWork.value.cchVal + 2;
break;
case DBVT_BLOB: case DBVT_ENCRYPTED:
bytesRequired = dbcwWork.value.cpbVal + 2;
break;
default:
bytesRequired = dbcwWork.value.type;
}
bytesRequired += 2 + settingNameLen;
bytesRequired += (DB_SETTINGS_RESIZE_GRANULARITY - (bytesRequired % DB_SETTINGS_RESIZE_GRANULARITY)) % DB_SETTINGS_RESIZE_GRANULARITY;
ofsSettingsGroup = CreateNewSpace(bytesRequired + offsetof(DBContactSettings, blob));
dbcs.signature = DBCONTACTSETTINGS_SIGNATURE;
dbcs.ofsNext = dbc.ofsFirstSettings;
dbcs.ofsModuleName = ofsModuleName;
dbcs.cbBlob = bytesRequired;
dbcs.blob[0] = 0;
dbc.ofsFirstSettings = ofsSettingsGroup;
DBWrite(ofsContact, &dbc, sizeof(DBContact));
DBWrite(ofsSettingsGroup, &dbcs, sizeof(DBContactSettings));
ofsBlobPtr = ofsSettingsGroup + offsetof(DBContactSettings, blob);
pBlob = (PBYTE)DBRead(ofsBlobPtr, &bytesRemaining);
}
else {
dbcs = *(DBContactSettings*)DBRead(ofsSettingsGroup, &bytesRemaining);
// find if the setting exists
ofsBlobPtr = ofsSettingsGroup + offsetof(DBContactSettings, blob);
pBlob = (PBYTE)DBRead(ofsBlobPtr, &bytesRemaining);
while (pBlob[0]) {
NeedBytes(settingNameLen + 1);
if (pBlob[0] == settingNameLen && !memcmp(pBlob + 1, dbcwWork.szSetting, settingNameLen))
break;
NeedBytes(1);
MoveAlong(pBlob[0] + 1);
NeedBytes(3);
MoveAlong(1 + GetSettingValueLength(pBlob));
NeedBytes(1);
}
// setting already existed, and up to end of name is in cache
if (pBlob[0]) {
MoveAlong(1 + settingNameLen);
// if different type or variable length and length is different
NeedBytes(3);
if (pBlob[0] != dbcwWork.value.type ||
((pBlob[0] == DBVT_ASCIIZ || pBlob[0] == DBVT_UTF8) && *(PWORD)(pBlob + 1) != dbcwWork.value.cchVal) ||
((pBlob[0] == DBVT_BLOB || pBlob[0] == DBVT_ENCRYPTED) && *(PWORD)(pBlob + 1) != dbcwWork.value.cpbVal))
{
// bin it
NeedBytes(3);
int nameLen = 1 + settingNameLen;
int valLen = 1 + GetSettingValueLength(pBlob);
DWORD ofsSettingToCut = ofsBlobPtr - nameLen;
MoveAlong(valLen);
NeedBytes(1);
while (pBlob[0]) {
MoveAlong(pBlob[0] + 1);
NeedBytes(3);
MoveAlong(1 + GetSettingValueLength(pBlob));
NeedBytes(1);
}
DBMoveChunk(ofsSettingToCut, ofsSettingToCut + nameLen + valLen, ofsBlobPtr + 1 - ofsSettingToCut);
ofsBlobPtr -= nameLen + valLen;
pBlob = (PBYTE)DBRead(ofsBlobPtr, &bytesRemaining);
}
else {
// replace existing setting at pBlob
MoveAlong(1); // skip data type
switch (dbcwWork.value.type) {
case DBVT_BYTE: DBWrite(ofsBlobPtr, &dbcwWork.value.bVal, 1); break;
case DBVT_WORD: DBWrite(ofsBlobPtr, &dbcwWork.value.wVal, 2); break;
case DBVT_DWORD: DBWrite(ofsBlobPtr, &dbcwWork.value.dVal, 4); break;
case DBVT_BLOB:
DBWrite(ofsBlobPtr + 2, dbcwWork.value.pbVal, dbcwWork.value.cpbVal);
break;
case DBVT_ENCRYPTED:
DBWrite(ofsBlobPtr + 2, dbcwWork.value.pbVal, dbcwWork.value.cpbVal);
break;
case DBVT_UTF8:
case DBVT_ASCIIZ:
DBWrite(ofsBlobPtr + 2, dbcwWork.value.pszVal, dbcwWork.value.cchVal);
break;
}
// quit
DBFlush(1);
lck.unlock();
// notify
NotifyEventHooks(hSettingChangeEvent, contactID, (LPARAM)&dbcwNotif);
return 0;
}
}
}
// cannot do a simple replace, add setting to end of list
// pBlob already points to end of list
// see if it fits
switch (dbcwWork.value.type) {
case DBVT_ASCIIZ: case DBVT_UTF8:
bytesRequired = dbcwWork.value.cchVal + 2;
break;
case DBVT_BLOB: case DBVT_ENCRYPTED:
bytesRequired = dbcwWork.value.cpbVal + 2;
break;
default:
bytesRequired = dbcwWork.value.type;
}
bytesRequired += 2 + settingNameLen;
bytesRequired += ofsBlobPtr + 1 - (ofsSettingsGroup + offsetof(DBContactSettings, blob));
if ((DWORD)bytesRequired > dbcs.cbBlob) {
// doesn't fit: move entire group
DBContactSettings *dbcsPrev;
DWORD ofsDbcsPrev, ofsNew;
InvalidateSettingsGroupOfsCacheEntry(ofsSettingsGroup);
bytesRequired += (DB_SETTINGS_RESIZE_GRANULARITY - (bytesRequired % DB_SETTINGS_RESIZE_GRANULARITY)) % DB_SETTINGS_RESIZE_GRANULARITY;
// find previous group to change its offset
ofsDbcsPrev = dbc.ofsFirstSettings;
if (ofsDbcsPrev == ofsSettingsGroup) ofsDbcsPrev = 0;
else {
dbcsPrev = (DBContactSettings*)DBRead(ofsDbcsPrev, NULL);
while (dbcsPrev->ofsNext != ofsSettingsGroup) {
if (dbcsPrev->ofsNext == 0) DatabaseCorruption(NULL);
ofsDbcsPrev = dbcsPrev->ofsNext;
dbcsPrev = (DBContactSettings*)DBRead(ofsDbcsPrev, NULL);
}
}
// create the new one
ofsNew = ReallocSpace(ofsSettingsGroup, dbcs.cbBlob + offsetof(DBContactSettings, blob), bytesRequired + offsetof(DBContactSettings, blob));
dbcs.cbBlob = bytesRequired;
DBWrite(ofsNew, &dbcs, offsetof(DBContactSettings, blob));
if (ofsDbcsPrev == 0) {
dbc.ofsFirstSettings = ofsNew;
DBWrite(ofsContact, &dbc, sizeof(DBContact));
}
else {
dbcsPrev = (DBContactSettings*)DBRead(ofsDbcsPrev, NULL);
dbcsPrev->ofsNext = ofsNew;
DBWrite(ofsDbcsPrev, dbcsPrev, offsetof(DBContactSettings, blob));
}
ofsBlobPtr += ofsNew - ofsSettingsGroup;
ofsSettingsGroup = ofsNew;
pBlob = (PBYTE)DBRead(ofsBlobPtr, &bytesRemaining);
}
// we now have a place to put it and enough space: make it
DBWrite(ofsBlobPtr, &settingNameLen, 1);
DBWrite(ofsBlobPtr + 1, (PVOID)dbcwWork.szSetting, settingNameLen);
MoveAlong(1 + settingNameLen);
DBWrite(ofsBlobPtr, &dbcwWork.value.type, 1);
MoveAlong(1);
switch (dbcwWork.value.type) {
case DBVT_BYTE: DBWrite(ofsBlobPtr, &dbcwWork.value.bVal, 1); MoveAlong(1); break;
case DBVT_WORD: DBWrite(ofsBlobPtr, &dbcwWork.value.wVal, 2); MoveAlong(2); break;
case DBVT_DWORD: DBWrite(ofsBlobPtr, &dbcwWork.value.dVal, 4); MoveAlong(4); break;
case DBVT_BLOB:
DBWrite(ofsBlobPtr, &dbcwWork.value.cpbVal, 2);
DBWrite(ofsBlobPtr + 2, dbcwWork.value.pbVal, dbcwWork.value.cpbVal);
MoveAlong(2 + dbcwWork.value.cpbVal);
break;
case DBVT_ENCRYPTED:
DBWrite(ofsBlobPtr, &dbcwWork.value.cpbVal, 2);
DBWrite(ofsBlobPtr + 2, dbcwWork.value.pbVal, dbcwWork.value.cpbVal);
MoveAlong(2 + dbcwWork.value.cpbVal);
break;
case DBVT_UTF8: case DBVT_ASCIIZ:
DBWrite(ofsBlobPtr, &dbcwWork.value.cchVal, 2);
DBWrite(ofsBlobPtr + 2, dbcwWork.value.pszVal, dbcwWork.value.cchVal);
MoveAlong(2 + dbcwWork.value.cchVal);
break;
}
BYTE zero = 0;
DBWrite(ofsBlobPtr, &zero, 1);
// quit
DBFlush(1);
lck.unlock();
// notify
NotifyEventHooks(hSettingChangeEvent, contactID, (LPARAM)&dbcwNotif);
return 0;
}
static INT_PTR DeleteContact(WPARAM wParam,LPARAM lParam)
{
struct DBContact *dbc,*dbcPrev;
DWORD ofsThis,ofsNext,ofsFirstEvent;
struct DBContactSettings *dbcs;
struct DBEvent *dbe;
int index;
if((HANDLE)wParam==NULL) return 1;
EnterCriticalSection(&csDbAccess);
dbc=(struct DBContact*)DBRead(wParam,sizeof(struct DBContact),NULL);
if(dbc->signature!=DBCONTACT_SIGNATURE) {
LeaveCriticalSection(&csDbAccess);
return 1;
}
if ( (HANDLE)wParam == (HANDLE)dbHeader.ofsUser ) {
LeaveCriticalSection(&csDbAccess);
log0("FATAL: del of user chain attempted.");
return 1;
}
log0("del contact");
LeaveCriticalSection(&csDbAccess);
//call notifier while outside mutex
NotifyEventHooks(hContactDeletedEvent,wParam,0);
//get back in
EnterCriticalSection(&csDbAccess);
{ DBCachedContactValueList VLtemp;
VLtemp.hContact = (HANDLE)wParam;
if ( li.List_GetIndex(&lContacts,&VLtemp,&index))
{
DBCachedContactValueList *VL = ( DBCachedContactValueList* )lContacts.items[index];
DBCachedContactValue* V = VL->first;
while ( V != NULL ) {
DBCachedContactValue* V1 = V->next;
FreeCachedVariant(&V->value);
HeapFree( hCacheHeap, 0, V );
V = V1;
}
HeapFree( hCacheHeap, 0, VL );
if (VLtemp.hContact == hLastCachedContact)
hLastCachedContact = NULL;
li.List_Remove(&lContacts,index);
} }
dbc=(struct DBContact*)DBRead(wParam,sizeof(struct DBContact),NULL);
//delete settings chain
ofsThis=dbc->ofsFirstSettings;
ofsFirstEvent=dbc->ofsFirstEvent;
while(ofsThis) {
dbcs=(struct DBContactSettings*)DBRead(ofsThis,sizeof(struct DBContactSettings),NULL);
ofsNext=dbcs->ofsNext;
DeleteSpace(ofsThis,offsetof(struct DBContactSettings,blob)+dbcs->cbBlob);
ofsThis=ofsNext;
}
//delete event chain
ofsThis=ofsFirstEvent;
while(ofsThis) {
dbe=(struct DBEvent*)DBRead(ofsThis,sizeof(struct DBEvent),NULL);
ofsNext=dbe->ofsNext;
DeleteSpace(ofsThis,offsetof(struct DBEvent,blob)+dbe->cbBlob);
ofsThis=ofsNext;
}
//find previous contact in chain and change ofsNext
dbc=(struct DBContact*)DBRead(wParam,sizeof(struct DBContact),NULL);
if(dbHeader.ofsFirstContact==wParam) {
dbHeader.ofsFirstContact=dbc->ofsNext;
DBWrite(0,&dbHeader,sizeof(dbHeader));
}
else {
ofsNext=dbc->ofsNext;
ofsThis=dbHeader.ofsFirstContact;
dbcPrev=(struct DBContact*)DBRead(ofsThis,sizeof(struct DBContact),NULL);
while(dbcPrev->ofsNext!=wParam) {
if(dbcPrev->ofsNext==0) DatabaseCorruption(NULL);
ofsThis=dbcPrev->ofsNext;
dbcPrev=(struct DBContact*)DBRead(ofsThis,sizeof(struct DBContact),NULL);
}
dbcPrev->ofsNext=ofsNext;
DBWrite(ofsThis,dbcPrev,sizeof(struct DBContact));
{
DBCachedContactValueList VLtemp;
VLtemp.hContact = (HANDLE)ofsThis;
if ( li.List_GetIndex(&lContacts,&VLtemp,&index))
{
DBCachedContactValueList *VL = ( DBCachedContactValueList* )lContacts.items[index];
VL->hNext = ( HANDLE )ofsNext;
} }
}
//delete contact
DeleteSpace(wParam,sizeof(struct DBContact));
//decrement contact count
dbHeader.contactCount--;
DBWrite(0,&dbHeader,sizeof(dbHeader));
DBFlush(0);
//quit
LeaveCriticalSection(&csDbAccess);
return 0;
}
STDMETHODIMP_(HANDLE) CDb3Mmap::AddEvent(MCONTACT contactID, DBEVENTINFO *dbei)
{
if (dbei == NULL || dbei->cbSize != sizeof(DBEVENTINFO)) return 0;
if (dbei->timestamp == 0) return 0;
DBEvent dbe;
dbe.signature = DBEVENT_SIGNATURE;
dbe.contactID = contactID; // store native or subcontact's id
dbe.timestamp = dbei->timestamp;
dbe.flags = dbei->flags;
dbe.wEventType = dbei->eventType;
dbe.cbBlob = dbei->cbBlob;
BYTE *pBlob = dbei->pBlob;
MCONTACT contactNotifyID = contactID;
DBCachedContact *ccSub = NULL;
if (contactID != 0) {
DBCachedContact *cc = m_cache->GetCachedContact(contactID);
if (cc == NULL)
return NULL;
if (cc->IsSub()) {
ccSub = cc;
// set default sub to the event's source
db_mc_setDefault(cc->parentID, contactID, false);
contactID = cc->parentID; // and add an event to a metahistory
if (db_mc_isEnabled())
contactNotifyID = contactID;
}
}
if (NotifyEventHooks(hEventFilterAddedEvent, contactNotifyID, (LPARAM)dbei))
return NULL;
mir_ptr<BYTE> pCryptBlob;
if (m_bEncrypted) {
size_t len;
BYTE *pResult = m_crypto->encodeBuffer(pBlob, dbe.cbBlob, &len);
if (pResult != NULL) {
pCryptBlob = pBlob = pResult;
dbe.cbBlob = (DWORD)len;
dbe.flags |= DBEF_ENCRYPTED;
}
}
bool neednotify;
mir_cslockfull lck(m_csDbAccess);
DWORD ofsContact = GetContactOffset(contactID);
DBContact dbc = *(DBContact*)DBRead(ofsContact, sizeof(DBContact), NULL);
if (dbc.signature != DBCONTACT_SIGNATURE)
return NULL;
DWORD ofsNew = CreateNewSpace(offsetof(DBEvent, blob) + dbe.cbBlob);
dbe.ofsModuleName = GetModuleNameOfs(dbei->szModule);
// find where to put it - sort by timestamp
if (dbc.eventCount == 0) {
dbe.ofsPrev = dbe.ofsNext = 0;
dbc.ofsFirstEvent = dbc.ofsLastEvent = ofsNew;
}
else {
DBEvent *dbeTest = (DBEvent*)DBRead(dbc.ofsFirstEvent, sizeof(DBEvent), NULL);
// Should new event be placed before first event in chain?
if (dbe.timestamp < dbeTest->timestamp) {
dbe.ofsPrev = 0;
dbe.ofsNext = dbc.ofsFirstEvent;
dbc.ofsFirstEvent = ofsNew;
dbeTest = (DBEvent*)DBRead(dbe.ofsNext, sizeof(DBEvent), NULL);
dbeTest->ofsPrev = ofsNew;
DBWrite(dbe.ofsNext, dbeTest, sizeof(DBEvent));
}
else {
// Loop through the chain, starting at the end
DWORD ofsThis = dbc.ofsLastEvent;
dbeTest = (DBEvent*)DBRead(ofsThis, sizeof(DBEvent), NULL);
for (;;) {
// If the new event's timesstamp is equal to or greater than the
// current dbevent, it will be inserted after. If not, continue
// with the previous dbevent in chain.
if (dbe.timestamp >= dbeTest->timestamp) {
dbe.ofsPrev = ofsThis;
dbe.ofsNext = dbeTest->ofsNext;
dbeTest->ofsNext = ofsNew;
DBWrite(ofsThis, dbeTest, sizeof(DBEvent));
if (dbe.ofsNext == 0)
dbc.ofsLastEvent = ofsNew;
else {
dbeTest = (DBEvent*)DBRead(dbe.ofsNext, sizeof(DBEvent), NULL);
dbeTest->ofsPrev = ofsNew;
DBWrite(dbe.ofsNext, dbeTest, sizeof(DBEvent));
}
break;
}
ofsThis = dbeTest->ofsPrev;
dbeTest = (DBEvent*)DBRead(ofsThis, sizeof(DBEvent), NULL);
}
}
}
dbc.eventCount++;
if (!(dbe.flags & (DBEF_READ | DBEF_SENT))) {
if (dbe.timestamp < dbc.tsFirstUnread || dbc.tsFirstUnread == 0) {
dbc.tsFirstUnread = dbe.timestamp;
dbc.ofsFirstUnread = ofsNew;
}
neednotify = true;
}
else neednotify = m_safetyMode;
if (ccSub != NULL) {
DBContact *pSub = (DBContact*)DBRead(ccSub->dwDriverData, sizeof(DBContact), NULL);
pSub->eventCount++;
}
DBWrite(ofsContact, &dbc, sizeof(DBContact));
DBWrite(ofsNew, &dbe, offsetof(DBEvent, blob));
DBWrite(ofsNew + offsetof(DBEvent, blob), pBlob, dbe.cbBlob);
DBFlush(0);
lck.unlock();
log1("add event @ %08x", ofsNew);
// Notify only in safe mode or on really new events
if (neednotify)
NotifyEventHooks(hEventAddedEvent, contactNotifyID, (LPARAM)ofsNew);
return (HANDLE)ofsNew;
}
STDMETHODIMP_(BOOL) CDb3Mmap::DeleteEvent(MCONTACT contactID, HANDLE hDbEvent)
{
DBCachedContact *cc;
if (contactID) {
if ((cc = m_cache->GetCachedContact(contactID)) == NULL)
return 2;
if (cc->IsSub())
if ((cc = m_cache->GetCachedContact(cc->parentID)) == NULL)
return 3;
}
else cc = NULL;
mir_cslockfull lck(m_csDbAccess);
DWORD ofsContact = (cc) ? cc->dwDriverData : m_dbHeader.ofsUser;
DBContact dbc = *(DBContact*)DBRead(ofsContact, sizeof(DBContact), NULL);
DBEvent dbe = *(DBEvent*)DBRead((DWORD)hDbEvent, sizeof(DBEvent), NULL);
if (dbc.signature != DBCONTACT_SIGNATURE || dbe.signature != DBEVENT_SIGNATURE)
return 1;
lck.unlock();
log1("delete event @ %08x", hContact);
// call notifier while outside mutex
NotifyEventHooks(hEventDeletedEvent, contactID, (LPARAM)hDbEvent);
// get back in
lck.lock();
dbc = *(DBContact*)DBRead(ofsContact, sizeof(DBContact), NULL);
dbe = *(DBEvent*)DBRead((DWORD)hDbEvent, sizeof(DBEvent), NULL);
// check if this was the first unread, if so, recalc the first unread
if (dbc.ofsFirstUnread == (DWORD)hDbEvent) {
for (DBEvent *dbeNext = &dbe;;) {
if (dbeNext->ofsNext == 0) {
dbc.ofsFirstUnread = 0;
dbc.tsFirstUnread = 0;
break;
}
DWORD ofsThis = dbeNext->ofsNext;
dbeNext = (DBEvent*)DBRead(ofsThis, sizeof(DBEvent), NULL);
if (!dbeNext->markedRead()) {
dbc.ofsFirstUnread = ofsThis;
dbc.tsFirstUnread = dbeNext->timestamp;
break;
}
}
}
// get previous and next events in chain and change offsets
if (dbe.ofsPrev == 0) {
if (dbe.ofsNext == 0)
dbc.ofsFirstEvent = dbc.ofsLastEvent = 0;
else {
DBEvent *dbeNext = (DBEvent*)DBRead(dbe.ofsNext, sizeof(DBEvent), NULL);
dbeNext->ofsPrev = 0;
DBWrite(dbe.ofsNext, dbeNext, sizeof(DBEvent));
dbc.ofsFirstEvent = dbe.ofsNext;
}
}
else {
if (dbe.ofsNext == 0) {
DBEvent *dbePrev = (DBEvent*)DBRead(dbe.ofsPrev, sizeof(DBEvent), NULL);
dbePrev->ofsNext = 0;
DBWrite(dbe.ofsPrev, dbePrev, sizeof(DBEvent));
dbc.ofsLastEvent = dbe.ofsPrev;
}
else {
DBEvent *dbePrev = (DBEvent*)DBRead(dbe.ofsPrev, sizeof(DBEvent), NULL);
dbePrev->ofsNext = dbe.ofsNext;
DBWrite(dbe.ofsPrev, dbePrev, sizeof(DBEvent));
DBEvent *dbeNext = (DBEvent*)DBRead(dbe.ofsNext, sizeof(DBEvent), NULL);
dbeNext->ofsPrev = dbe.ofsPrev;
DBWrite(dbe.ofsNext, dbeNext, sizeof(DBEvent));
}
}
// decrement event count
dbc.eventCount--;
DBWrite(ofsContact, &dbc, sizeof(DBContact));
// delete event
DeleteSpace((DWORD)hDbEvent, offsetof(DBEvent, blob) + dbe.cbBlob);
// also update a sub
if (cc && dbe.contactID != cc->contactID) {
DBContact *pSub = (DBContact*)DBRead(GetContactOffset(dbe.contactID), sizeof(DBContact), NULL);
if (pSub->eventCount > 0)
pSub->eventCount--;
}
DBFlush(0);
return 0;
}
STDMETHODIMP_(LONG) CDb3Mmap::DeleteContact(MCONTACT contactID)
{
if (contactID == 0) // global contact cannot be removed
return 1;
mir_cslockfull lck(m_csDbAccess);
DWORD ofsContact = GetContactOffset(contactID);
DBContact *dbc = (DBContact*)DBRead(ofsContact, NULL);
if (dbc->signature != DBCONTACT_SIGNATURE)
return 1;
if (ofsContact == m_dbHeader.ofsUser) {
log0("FATAL: del of user chain attempted.");
return 1;
}
lck.unlock();
log0("del contact");
// call notifier while outside mutex
NotifyEventHooks(hContactDeletedEvent, contactID, 0);
// get back in
lck.lock();
// delete settings chain
DWORD ofsThis = dbc->ofsFirstSettings;
DWORD ofsFirstEvent = dbc->ofsFirstEvent;
while (ofsThis) {
DBContactSettings *dbcs = (DBContactSettings*)DBRead(ofsThis, NULL);
DWORD ofsNext = dbcs->ofsNext;
DeleteSpace(ofsThis, offsetof(DBContactSettings, blob) + dbcs->cbBlob);
ofsThis = ofsNext;
}
// delete event chain
ofsThis = ofsFirstEvent;
while (ofsThis) {
DBEvent *dbe = (DBEvent*)DBRead(ofsThis, NULL);
DWORD ofsNext = dbe->ofsNext;
DeleteSpace(ofsThis, offsetof(DBEvent, blob) + dbe->cbBlob);
ofsThis = ofsNext;
}
// find previous contact in chain and change ofsNext
if (m_dbHeader.ofsFirstContact == ofsContact) {
m_dbHeader.ofsFirstContact = dbc->ofsNext;
DBWrite(0, &m_dbHeader, sizeof(m_dbHeader));
}
else {
DWORD ofsNext = dbc->ofsNext;
ofsThis = m_dbHeader.ofsFirstContact;
DBContact *dbcPrev = (DBContact*)DBRead(ofsThis, NULL);
while (dbcPrev->ofsNext != ofsContact) {
if (dbcPrev->ofsNext == 0) DatabaseCorruption(NULL);
ofsThis = dbcPrev->ofsNext;
dbcPrev = (DBContact*)DBRead(ofsThis, NULL);
}
dbcPrev->ofsNext = ofsNext;
DBWrite(ofsThis, dbcPrev, sizeof(DBContact));
}
// delete contact
DeleteSpace(ofsContact, sizeof(DBContact));
// decrement contact count
m_dbHeader.contactCount--;
DBWrite(0, &m_dbHeader, sizeof(m_dbHeader));
DBFlush(0);
// free cache item
m_cache->FreeCachedContact(contactID);
if (contactID == m_hLastCachedContact)
m_hLastCachedContact = NULL;
return 0;
}