livestatus: add unix and tcp socket support

use socket_type and then either socket_path or address and port.

fixes #4376

components/livestatus/component.cpp

@@ -21,6 +21,7 @@
 #include "base/dynamictype.h"
 #include "base/logger_fwd.h"
 #include "base/tcpsocket.h"
+#include "base/unixsocket.h"
 #include "base/networkstream.h"
 #include "base/application.h"
 #include <boost/smart_ptr/make_shared.hpp>
@@ -33,7 +34,10 @@ REGISTER_TYPE(LivestatusComponent);
 LivestatusComponent::LivestatusComponent(const Dictionary::Ptr& serializedUpdate)
 	: DynamicObject(serializedUpdate)
 {
+	RegisterAttribute("socket_type", Attribute_Config, &m_SocketType);
 	RegisterAttribute("socket_path", Attribute_Config, &m_SocketPath);
+	RegisterAttribute("address", Attribute_Config, &m_Address);
+	RegisterAttribute("port", Attribute_Config, &m_Port);
 }
 
 /**
@@ -41,18 +45,37 @@ LivestatusComponent::LivestatusComponent(const Dictionary::Ptr& serializedUpdate
  */
 void LivestatusComponent::Start(void)
 {
-//#ifndef _WIN32
+	if (GetSocketType() == "tcp") {
-//	UnixSocket::Ptr socket = boost::make_shared<UnixSocket>();
+		TcpSocket::Ptr socket = boost::make_shared<TcpSocket>();
-//	socket->Bind(GetSocketPath());
+		socket->Bind(GetAddress(), GetPort(), AF_INET);
-//#else /* _WIN32 */
-	TcpSocket::Ptr socket = boost::make_shared<TcpSocket>();
-	socket->Bind("6558", AF_INET);
-//#endif /* _WIN32 */
 
-	m_Listener = socket;
+		boost::thread thread(boost::bind(&LivestatusComponent::ServerThreadProc, this, socket));
+		thread.detach();
+	}
+	else if (GetSocketType() == "unix") {
+#ifndef _WIN32
+		UnixSocket::Ptr socket = boost::make_shared<UnixSocket>();
+		socket->Bind(GetSocketPath());
 
-	boost::thread thread(boost::bind(&LivestatusComponent::ServerThreadProc, this, socket));
+		boost::thread thread(boost::bind(&LivestatusComponent::ServerThreadProc, this, socket));
-	thread.detach();
+		thread.detach();
+#else
+		/* no unix sockets on windows */
+		Log(LogCritical, "livestatus", "Unix sockets are not supported on Windows.");
+		return;
+#endif
+	}
+
+	m_ClientsConnected = 0;
+}
+
+String LivestatusComponent::GetSocketType(void) const
+{
+	Value socketType = m_SocketType;
+	if (socketType.IsEmpty())
+		return "unix";
+	else
+		return socketType;
 }
 
 String LivestatusComponent::GetSocketPath(void) const
@@ -64,6 +87,29 @@ String LivestatusComponent::GetSocketPath(void) const
 		return socketPath;
 }
 
+String LivestatusComponent::GetAddress(void) const
+{
+	Value node = m_Address;
+	if (node.IsEmpty())
+		return "127.0.0.1";
+	else
+		return node;
+}
+
+String LivestatusComponent::GetPort(void) const
+{
+	Value service = m_Port;
+	if (service.IsEmpty())
+		return "6558";
+	else
+		return service;
+}
+
+int LivestatusComponent::GetClientsConnected(void) const
+{
+	return m_ClientsConnected;
+}
+
 void LivestatusComponent::ServerThreadProc(const Socket::Ptr& server)
 {
 	server->Listen();
@@ -80,6 +126,8 @@ void LivestatusComponent::ServerThreadProc(const Socket::Ptr& server)
 
 void LivestatusComponent::ClientThreadProc(const Socket::Ptr& client)
 {
+	m_ClientsConnected++;
+
 	Stream::Ptr stream = boost::make_shared<NetworkStream>(client);
 
 	for (;;) {
@@ -99,4 +147,6 @@ void LivestatusComponent::ClientThreadProc(const Socket::Ptr& client)
 		if (!query->Execute(stream))
 			break;
 	}
+
+	m_ClientsConnected--;
 }

components/livestatus/component.h

@@ -40,12 +40,20 @@ public:
 
 	virtual void Start(void);
 
+	String GetSocketType(void) const;
 	String GetSocketPath(void) const;
+	String GetAddress(void) const;
+	String GetPort(void) const;
+
+	int GetClientsConnected(void) const;
 
 private:
+	Attribute<String> m_SocketType;
 	Attribute<String> m_SocketPath;
+	Attribute<String> m_Address;
+	Attribute<String> m_Port;
 
-	Socket::Ptr m_Listener;
+	int m_ClientsConnected;
 
 	void ServerThreadProc(const Socket::Ptr& server);
 	void ClientThreadProc(const Socket::Ptr& client);

components/livestatus/livestatus-type.conf

@@ -18,4 +18,9 @@
  ******************************************************************************/
 
 type LivestatusComponent {
+	%attribute string "socket_type",
+
+	%attribute string "socket_path",
+	%attribute string "address",
+	%attribute string "port",
 }