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/*
* TLS Session Management
* (C) 2011 Jack Lloyd
*
* Released under the terms of the Botan license
*/
#include <botan/tls_session_manager.h>
#include <botan/hex.h>
#include <botan/time.h>
#include <stdio.h>
namespace Botan {
bool TLS_Session_Manager_In_Memory::load_from_session_str(
const std::string& session_str, TLS_Session& session)
{
std::map<std::string, TLS_Session>::iterator i = sessions.find(session_str);
if(i == sessions.end())
return false;
// session has expired, remove it
const u64bit now = system_time();
if(i->second.start_time() + session_lifetime < now)
{
sessions.erase(i);
return false;
}
session = i->second;
return true;
}
bool TLS_Session_Manager_In_Memory::load_from_session_id(
const MemoryRegion<byte>& session_id, TLS_Session& session)
{
return load_from_session_str(hex_encode(session_id), session);
}
bool TLS_Session_Manager_In_Memory::load_from_host_info(
const std::string& hostname, u16bit port, TLS_Session& session)
{
std::map<std::string, std::string>::iterator i;
if(port > 0)
i = host_sessions.find(hostname + ":" + to_string(port));
else
i = host_sessions.find(hostname);
if(i == host_sessions.end())
return false;
if(load_from_session_str(i->second, session))
return true;
// was removed from sessions map, remove host_sessions entry
host_sessions.erase(i);
return false;
}
void TLS_Session_Manager_In_Memory::remove_entry(
const MemoryRegion<byte>& session_id)
{
std::map<std::string, TLS_Session>::iterator i =
sessions.find(hex_encode(session_id));
if(i != sessions.end())
sessions.erase(i);
}
void TLS_Session_Manager_In_Memory::save(const TLS_Session& session)
{
if(max_sessions != 0)
{
/*
This removes randomly based on ordering of session ids.
Instead, remove oldest first?
*/
while(sessions.size() >= max_sessions)
sessions.erase(sessions.begin());
}
const std::string session_id_str = hex_encode(session.session_id());
sessions[session_id_str] = session;
if(session.side() == CLIENT && session.sni_hostname() != "")
host_sessions[session.sni_hostname()] = session_id_str;
}
}
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