added: plugin mechanism

files: core/plugin.h core/plugin.cpp core/pluginmsg.h
added: directory 'main' with main.cpp (moved from 'core' directory)
changed: the way of building
       nearly everything is in cmslu.so
       only main() is in cmslu and is dynamically linked with cmslu.so



git-svn-id: svn://ttmath.org/publicrep/cmslu/trunk@516 e52654a7-88a9-db11-a3e9-0013d4bc506e

main/main.cpp

@@ -0,0 +1,127 @@
+/*
+ * This file is a part of CMSLU -- Content Management System like Unix
+ * and is not publicly distributed
+ * 
+ * Copyright (c) 2008-2009, Tomasz Sowa
+ * All rights reserved.
+ * 
+ */
+ 
+#include <cstdlib>
+#include <ctime>
+#include <signal.h>
+#include <iostream>
+
+#include "../core/requestcontroller.h"
+#include "../core/data.h"
+#include "../core/log.h"
+#include "../core/request.h"
+#include "../core/db.h"
+#include "../core/config.h"
+#include "../core/notify.h"
+#include "../core/plugin.h"
+
+
+// singletons
+// first 'data' then 'log' then 'request'
+Data    data;
+Log     log;
+Log     nlog; // notify log (used by another thread)
+Request request;
+Db      db;
+Config  config;
+RequestController req_controller;
+Notify  notify;
+Plugin  plugin;
+
+
+void signal_term(int)
+{
+	log << log1 << "cmslu stopped" << logend;
+	exit(0);
+}
+
+
+
+void signal_hup(int)
+{
+	log << log1 << "SIGHUP received" << logend;
+	data.signal_hup = true;
+	config.ReadConfig(false); /* errors not to stdout */
+}
+
+
+
+void print_syntax()
+{
+	std::cout << "Syntax:" << std::endl;	
+	std::cout << "  cmslu.fcgi config_file" << std::endl;	
+}
+
+
+
+
+int main(int argv, char ** argc)
+{
+	std::srand(std::time(0));
+
+	if( argv != 2 )
+	{
+		print_syntax();	
+		return 1;
+	}
+
+	data.config_file = argc[1];	
+
+
+	
+	if( !config.ReadConfig(true) ) /* errors to stdout */
+		return 2;
+
+	// closing descriptors only at the beginning
+	// !! temporary we do not close standard output for errors
+	// client postgresql uses it for reporting warnings (I don't know why)
+	//close(2);
+
+	if( !data.log_stdout )
+	{
+		close(1);
+		data.stdout_is_closed = true;
+	}
+
+	
+	log.Init(data.log_level, data.log_file, data.log_stdout);
+	nlog.Init(data.log_level, data.log_notify_file, false);
+	db.Init(data.db_database, data.db_user, data.db_pass);
+
+	plugin.LoadPlugins(data.plugin_file);
+
+	request.Init();
+	
+	if( !req_controller.Init() )
+		return 1;
+
+	if( !notify.Init(data.templates) )
+		return 2;
+
+	signal(SIGTERM, signal_term);
+	signal(SIGINT,  signal_term);
+	signal(SIGHUP,  signal_hup);
+
+
+	while( true )
+	{
+		//log << log2 << "checking for table consistency:" << logend;
+		// !! zrobic wyjatek dla root
+		//db.CheckAllUrlSubject();
+		
+		log << log1 << "cmslu started" << logend;
+
+		req_controller.Loop();
+		
+		if( data.signal_hup )
+			data.signal_hup = false;	
+	}
+
+return 0;
+}