void MDatabaseCache::FreeCachedContact(MCONTACT contactID)
{
mir_cslock lck(m_cs);
int index = m_lContacts.getIndex((DBCachedContact*)&contactID);
if (index == -1)
return;
DBCachedContact *cc = m_lContacts[index];
DBCachedContactValue* V = cc->first;
while (V != NULL) {
DBCachedContactValue* V1 = V->next;
FreeCachedVariant(&V->value);
HeapFree(m_hCacheHeap, 0, V);
V = V1;
}
mir_free(cc->pSubs);
HeapFree(m_hCacheHeap, 0, cc);
m_lContacts.remove(index);
}
static DBVARIANT* GetCachedValuePtr( HANDLE hContact, char* szSetting, int bAllocate )
{
int index;
if ( hContact == 0 ) {
DBCachedGlobalValue Vtemp, *V;
Vtemp.name = szSetting;
if ( li.List_GetIndex(&lGlobalSettings,&Vtemp,&index)) {
V = (DBCachedGlobalValue*)lGlobalSettings.items[index];
if ( bAllocate == -1 ) {
FreeCachedVariant( &V->value );
li.List_Remove(&lGlobalSettings,index);
HeapFree(hCacheHeap,0,V);
return NULL;
} }
else {
if ( bAllocate != 1 )
return NULL;
V = (DBCachedGlobalValue*)HeapAlloc(hCacheHeap,HEAP_ZERO_MEMORY,sizeof(DBCachedGlobalValue));
V->name = szSetting;
li.List_Insert(&lGlobalSettings,V,index);
}
return &V->value;
}
else {
DBCachedContactValue *V, *V1;
DBCachedContactValueList VLtemp,*VL;
if (hLastCachedContact==hContact && LastVL) {
VL = LastVL;
}
else {
VLtemp.hContact=hContact;
if ( !li.List_GetIndex(&lContacts,&VLtemp,&index))
{
if ( bAllocate != 1 )
return NULL;
VL = AddToCachedContactList(hContact,index);
}
else VL = (DBCachedContactValueList*)lContacts.items[index];
LastVL = VL;
hLastCachedContact = hContact;
}
for ( V = VL->first; V != NULL; V = V->next)
if (V->name == szSetting)
break;
if ( V == NULL ) {
if ( bAllocate != 1 )
return NULL;
V = HeapAlloc(hCacheHeap,HEAP_ZERO_MEMORY,sizeof(DBCachedContactValue));
if (VL->last)
VL->last->next = V;
else
VL->first = V;
VL->last = V;
V->name = szSetting;
}
else if ( bAllocate == -1 ) {
LastVL = NULL;
FreeCachedVariant(&V->value);
if ( VL->first == V ) {
VL->first = V->next;
if (VL->last == V)
VL->last = V->next; // NULL
}
else
for ( V1 = VL->first; V1 != NULL; V1 = V1->next )
if ( V1->next == V ) {
V1->next = V->next;
if (VL->last == V)
VL->last = V1;
break;
}
HeapFree(hCacheHeap,0,V);
return NULL;
}
return &V->value;
} }
STDMETHODIMP_(DBVARIANT*) MDatabaseCache::GetCachedValuePtr(MCONTACT contactID, char *szSetting, int bAllocate)
{
// a global setting
if (contactID == 0) {
DBCachedGlobalValue Vtemp, *V;
Vtemp.name = szSetting;
int index = m_lGlobalSettings.getIndex(&Vtemp);
if (index != -1) {
V = m_lGlobalSettings[index];
if (bAllocate == -1) {
FreeCachedVariant(&V->value);
m_lGlobalSettings.remove(index);
HeapFree(m_hCacheHeap, 0, V);
return NULL;
}
}
else {
if (bAllocate != 1)
return NULL;
V = (DBCachedGlobalValue*)HeapAlloc(m_hCacheHeap, HEAP_ZERO_MEMORY, sizeof(DBCachedGlobalValue));
V->name = szSetting;
m_lGlobalSettings.insert(V);
}
return &V->value;
}
// a contact setting
DBCachedContactValue *V, *V1;
DBCachedContact VLtemp,*VL;
VLtemp.contactID = contactID;
int index = m_lContacts.getIndex(&VLtemp);
if (index == -1) {
if ( bAllocate != 1 )
return NULL;
VL = AddContactToCache(contactID);
}
else VL = m_lContacts[index];
m_lastVL = VL;
for ( V = VL->first; V != NULL; V = V->next)
if (V->name == szSetting)
break;
if ( V == NULL ) {
if ( bAllocate != 1 )
return NULL;
V = (DBCachedContactValue *)HeapAlloc(m_hCacheHeap, HEAP_ZERO_MEMORY, sizeof(DBCachedContactValue));
if (VL->last)
VL->last->next = V;
else
VL->first = V;
VL->last = V;
V->name = szSetting;
}
else if ( bAllocate == -1 ) {
m_lastVL = NULL;
FreeCachedVariant(&V->value);
if ( VL->first == V ) {
VL->first = V->next;
if (VL->last == V)
VL->last = V->next; // NULL
}
else
for ( V1 = VL->first; V1 != NULL; V1 = V1->next )
if ( V1->next == V ) {
V1->next = V->next;
if (VL->last == V)
VL->last = V1;
break;
}
HeapFree(m_hCacheHeap,0,V);
return NULL;
}
return &V->value;
}
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;
}