168 lines
2.7 KiB
C++
Executable File
168 lines
2.7 KiB
C++
Executable File
/*
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* This file is a part of CMSLU -- Content Management System like Unix
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* and is not publicly distributed
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*
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* Copyright (c) 2008, Tomasz Sowa
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* All rights reserved.
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*
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*/
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#include "sessionmanager.h"
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bool SessionManager::IsSession(long s)
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{
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SessionTable::iterator i;
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Session temp;
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temp.id = s;
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i = session_table.find(temp);
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if( i == session_table.end() )
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return false;
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return true;
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}
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long SessionManager::CreateSessionId()
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{
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long id;
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// make sure to call std::srand() somewhere at the beginning
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// id must be != 0 (0 is reserved)
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do
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{
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if( sizeof(long) == 8 )
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{
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id = ((unsigned long)std::rand()) << 32 + std::rand();
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}
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else
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{
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id = std::rand();
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}
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id += std::time(0);
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if( id < 0 )
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id = -id;
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}
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while( id == 0 ); // 0 reserved for a temporary session
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return id;
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}
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void SessionManager::CreateTemporarySession()
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{
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Session s;
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s.id = 0;
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SessionTable::iterator i = session_table.find( s ); // looking for id=0
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if( i == session_table.end() )
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{
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std::pair<SessionTable::iterator,bool> res = session_table.insert(s);
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request.session = const_cast<Session*>( &(*res.first) );
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}
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else
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{
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request.session = const_cast<Session*>( &(*i) );
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}
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}
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void SessionManager::CreateSession()
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{
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Session s;
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int attempts = 100;
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for( ; attempts > 0 ; --attempts )
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{
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s.id = CreateSessionId();
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std::pair<SessionTable::iterator,bool> res = session_table.insert(s);
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if( res.second == true )
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{
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// the insertion took place
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request.session = const_cast<Session*>( &(*res.first) );
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request.SetCookie(data.http_session_id_name.c_str(), request.session->id);
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log << log2 << "SM: created a new session: " << s.id << logend;
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return;
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}
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}
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// there is a problem with generating a new session id
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// we do not set a session cookie
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CreateTemporarySession();
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log << log1 << "SM: cannot create a session id (temporary used: with id 0)" << logend;
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}
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void SessionManager::SetSession()
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{
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CookieTable::iterator i = request.cookie_table.find(data.http_session_id_name);
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if( i == request.cookie_table.end() )
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{
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CreateSession();
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}
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else
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{
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Session temp;
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temp.id = atol(i->second.c_str());
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SessionTable::iterator s = session_table.find(temp);
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if( s != session_table.end() )
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{
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// that session is in the table
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request.session = const_cast<Session*>( &(*s) );
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log << log2 << "SM: session: " << s->id;
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if( request.session->puser )
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log << log2 << ", user: " << request.session->puser->name << ", id: " << request.session->puser->id;
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log << log2 << logend;
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}
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else
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{
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// there is no such a session
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// deleting the old cookie
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request.cookie_table.erase(i);
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// and creating a new one
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CreateSession();
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}
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}
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// request.session is set now
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}
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