added: 'remember me' flag when logging

added: the session file
       sessions can still be available between starting and stopping the cmslu system


git-svn-id: svn://ttmath.org/publicrep/cmslu/trunk@529 e52654a7-88a9-db11-a3e9-0013d4bc506e

core/sessionparser.cpp

@@ -0,0 +1,148 @@
+/*
+ * 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 "sessionparser.h"
+#include "log.h"
+#include "data.h"
+
+
+bool SessionParser::Parse(const std::string & path, SessionContainer & container)
+{
+	return Parse(path.c_str(), container);
+}
+
+
+bool SessionParser::Parse(const char * path, SessionContainer & container)
+{
+	container.Clear();
+	file.open(path, std::ios_base::in | std::ios_base::binary);
+
+	if( !file )
+	{
+		log << log1 << "SP: cannot open the session file for reading (file: '" << path << "')" << logend;
+		return false;
+	}
+
+	bool res = Parse(container);
+
+	file.close();
+
+return res;
+}
+
+
+
+bool SessionParser::Parse(SessionContainer & container)
+{
+	/*
+		file format, each rows:
+		session_id(long) user_id(long) remember_me(0|1) time(long) last_time(long)
+	*/
+
+	long user_id;
+
+	session.Clear();
+	last = file.get();
+
+	log << log2 << "SP: reading sessions from the session file" << logend;
+
+	while( true )
+	{
+		session.id = ReadLong();
+
+		if( file.eof() )
+			break;
+		
+		user_id             = ReadLong();
+		session.remember_me = ReadLong();
+		session.time        = ReadLong();
+		session.last_time   = ReadLong();
+
+		if( MakeSession(user_id) )
+		{
+			container.PushBack(session);
+			log << log2 << "SP: read session id: " << session.id << " for user: " << session.puser->name << logend;
+		}
+
+		SkipLine();
+	}
+
+	log << log2 << "SP: read " << container.Size() << " session(s)" << logend;
+
+return true;
+}
+
+
+bool SessionParser::MakeSession(long user_id)
+{
+	User * puser = data.users.GetUser(user_id);
+
+	if( !puser )
+	{
+		log << log1 << "SP: there is no a user with id: " << user_id << " (skipped)" << logend;
+		return false;
+	}
+
+	session.puser        = puser;
+	session.new_session  = true;
+	session.tm_time      = *std::localtime(&session.time);
+	session.tm_last_time = *std::localtime(&session.last_time);
+
+return true;
+}
+
+
+bool SessionParser::IsWhite(int c)
+{
+	if( c==' ' || c=='\t' || c==13 )
+		return true;
+
+return false;
+}
+
+bool SessionParser::IsDigit(int c)
+{
+	if( c>='0' && c<='9' )
+		return true;
+
+return false;
+}
+
+void SessionParser::SkipWhite()
+{
+	while( IsWhite(last) )
+		last = file.get();
+}
+
+
+void SessionParser::SkipLine()
+{
+	while( last != 10 )
+		last = file.get();
+
+	last = file.get(); // first character from the new line
+}
+
+
+
+long SessionParser::ReadLong()
+{
+long res = 0;
+
+	SkipWhite();
+
+	while( IsDigit(last) )
+	{
+		res  = res*10 + (last-'0');
+		last = file.get();
+	}
+
+return res;
+}
+