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;
}
DWORD CDb3Mmap::ReallocSpace(DWORD ofs, int oldSize, int newSize)
{
if (oldSize >= newSize)
return ofs;
DWORD ofsNew;
if (ofs + oldSize == m_dbHeader.ofsFileEnd) {
ofsNew = ofs;
m_dbHeader.ofsFileEnd += newSize - oldSize;
DBWrite(0, &m_dbHeader, sizeof(m_dbHeader));
log3("adding newspace %d@%08x+%d", newSize, ofsNew, oldSize);
}
else {
ofsNew = CreateNewSpace(newSize);
DBMoveChunk(ofsNew, ofs, oldSize);
DeleteSpace(ofs, oldSize);
}
return ofsNew;
}
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;
}
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;
}
