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/*
Copyright (c) 2015 Miranda NG project (http://miranda-ng.org)
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 version 2
of the License.
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, see <http://www.gnu.org/licenses/>.
*/
#include "stdafx.h"
MEVENT CSkypeProto::GetMessageFromDb(MCONTACT hContact, const char *messageId, LONGLONG timestamp)
{
if (messageId == NULL)
return NULL;
timestamp -= 600; // we check events written 10 minutes ago
size_t messageIdLength = mir_strlen(messageId);
mir_cslock lock(messageSyncLock);
for (MEVENT hDbEvent = db_event_last(hContact); hDbEvent; hDbEvent = db_event_prev(hContact, hDbEvent))
{
DBEVENTINFO dbei = { sizeof(dbei) };
dbei.cbBlob = db_event_getBlobSize(hDbEvent);
if (dbei.cbBlob < messageIdLength)
continue;
mir_ptr<BYTE> blob((PBYTE)mir_alloc(dbei.cbBlob));
dbei.pBlob = blob;
db_event_get(hDbEvent, &dbei);
size_t cbLen = mir_strlen((char*)dbei.pBlob);
if (memcmp(&dbei.pBlob[cbLen + 1], messageId, messageIdLength) == 0)
return hDbEvent;
if (dbei.timestamp < timestamp)
break;
}
return NULL;
}
MEVENT CSkypeProto::AddDbEvent(WORD type, MCONTACT hContact, DWORD timestamp, DWORD flags, const char *content, const char *uid)
{
if (MEVENT hDbEvent = GetMessageFromDb(hContact, uid, timestamp))
return hDbEvent;
size_t messageLength = mir_strlen(content) + 1;
size_t messageIdLength = mir_strlen(uid);
size_t cbBlob = messageLength + messageIdLength;
PBYTE pBlob = (PBYTE)mir_alloc(cbBlob);
memcpy(pBlob, content, messageLength);
memcpy(pBlob + messageLength, uid, messageIdLength);
return AddEventToDb(hContact, type, timestamp, flags, (DWORD)cbBlob, pBlob);
}
MEVENT CSkypeProto::AppendDBEvent(MCONTACT hContact, MEVENT hEvent, const char *szContent, const char *szUid, time_t edit_time)
{
DBEVENTINFO dbei = { sizeof(dbei) };
dbei.cbBlob = db_event_getBlobSize(hEvent);
dbei.pBlob = mir_ptr<BYTE>((PBYTE)mir_alloc(dbei.cbBlob));
db_event_get(hEvent, &dbei);
JSONNode jMsg = JSONNode::parse((char*)dbei.pBlob);
if (jMsg)
{
JSONNode &jEdits = jMsg["edits"];
if (jEdits)
{
for (auto it = jEdits.begin(); it != jEdits.end(); ++it)
{
const JSONNode &jEdit = *it;
if (jEdit["time"].as_int() == edit_time)
return hEvent;
}
JSONNode jEdit;
jEdit
<< JSONNode("time", (long)edit_time)
<< JSONNode("text", szContent);
jEdits << jEdit;
}
}
else
{
jMsg = JSONNode();
JSONNode jOriginalMsg; jOriginalMsg.set_name("original_message");
JSONNode jEdits(JSON_ARRAY); jEdits.set_name("edits");
JSONNode jEdit;
jOriginalMsg
<< JSONNode("time", (long)dbei.timestamp)
<< JSONNode("text", (char*)dbei.pBlob);
jMsg << jOriginalMsg;
jEdit
<< JSONNode("time", (long)edit_time)
<< JSONNode("text", szContent);
jEdits << jEdit;
jMsg << jEdits;
}
db_event_delete(hContact, hEvent);
return AddDbEvent(SKYPE_DB_EVENT_TYPE_EDITED_MESSAGE, hContact, dbei.timestamp, DBEF_UTF, jMsg.write().c_str(), szUid);
}
MEVENT CSkypeProto::AddEventToDb(MCONTACT hContact, WORD type, DWORD timestamp, DWORD flags, DWORD cbBlob, PBYTE pBlob)
{
DBEVENTINFO dbei = { sizeof(dbei) };
dbei.szModule = this->m_szModuleName;
dbei.timestamp = timestamp;
dbei.eventType = type;
dbei.cbBlob = cbBlob;
dbei.pBlob = pBlob;
dbei.flags = flags;
return db_event_add(hContact, &dbei);
}
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