Add CClient::IsPlaybackActive()

To let modules know whether a client is currently in playback mode.
The clientbuffer module (#343) wants to update "last seen message"
timestamps in OnSendToClient() but it must avoid doing that while
in playback mode.

src/Chan.cpp

@@ -580,6 +580,9 @@ void CChan::SendBuffer(CClient* pClient, const CBuffer& Buffer) {
 			for (size_t uClient = 0; uClient < vClients.size(); ++uClient) {
 				CClient * pUseClient = (pClient ? pClient : vClients[uClient]);
 
+				bool bWasPlaybackActive = pUseClient->IsPlaybackActive();
+				pUseClient->SetPlaybackActive(true);
+
 				bool bSkipStatusMsg = pUseClient->HasServerTime();
 				NETWORKMODULECALL(OnChanBufferStarting(*this, *pUseClient), m_pNetwork->GetUser(), m_pNetwork, NULL, &bSkipStatusMsg);
 
@@ -618,6 +621,8 @@ void CChan::SendBuffer(CClient* pClient, const CBuffer& Buffer) {
 					m_pNetwork->PutUser(":znc.in BATCH -" + sBatchName, pUseClient);
 				}
 
+				pUseClient->SetPlaybackActive(bWasPlaybackActive);
+
 				if (pClient)
 					break;
 			}

src/IRCNetwork.cpp

@@ -569,6 +569,8 @@ void CIRCNetwork::ClientConnected(CClient *pClient) {
 
 	size_t uIdx, uSize;
 
+	pClient->SetPlaybackActive(true);
+
 	if (m_RawBuffer.IsEmpty()) {
 		pClient->PutClient(":irc.znc.in 001 " + pClient->GetNick() + " :- Welcome to ZNC -");
 	} else {
@@ -646,6 +648,8 @@ void CIRCNetwork::ClientConnected(CClient *pClient) {
 	}
 	m_NoticeBuffer.Clear();
 
+	pClient->SetPlaybackActive(false);
+
 	// Tell them why they won't connect
 	if (!GetIRCConnectEnabled())
 		pClient->PutStatus("You are currently disconnected from IRC. "

src/Query.cpp

@@ -44,6 +44,9 @@ void CQuery::SendBuffer(CClient* pClient, const CBuffer& Buffer) {
 			for (size_t uClient = 0; uClient < vClients.size(); ++uClient) {
 				CClient * pUseClient = (pClient ? pClient : vClients[uClient]);
 
+				bool bWasPlaybackActive = pUseClient->IsPlaybackActive();
+				pUseClient->SetPlaybackActive(true);
+
 				bool bBatch = pUseClient->HasBatch();
 				CString sBatchName = m_sName.MD5();
 
@@ -78,6 +81,8 @@ void CQuery::SendBuffer(CClient* pClient, const CBuffer& Buffer) {
 					m_pNetwork->PutUser(":znc.in BATCH -" + sBatchName, pUseClient);
 				}
 
+				pUseClient->SetPlaybackActive(bWasPlaybackActive);
+
 				if (pClient)
 					break;
 			}