pana_sid_generator.h

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/* Open Diameter: Open-source software for the Diameter and               */
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#ifndef __PANA_UTL_H__
#define __PANA_UTL_H__

#include "ace/Synch.h"
#include "ace/Singleton.h"

/*
 * Auxilliary class for generating session id's
 */
class PANA_SessionIdGenerator
{
    public:
        void Seed(std::string &id) { m_Identity = id; }
        void Generate(std::string &newSessionId) {
           if (m_Identity.size() == 0) {
              char hostname[128];
              ACE_INET_Addr base;
              if (base.get_host_name(hostname, sizeof(hostname)) == 0) {
                 m_Identity = hostname;
              }
              else {
                 throw (PANA_Exception(PANA_Exception::SESSIONID_ERROR,
                                       "Unable to retrieve local hostname"));
              }
           }
           ACE_Time_Value tv = ACE_OS::gettimeofday();
           m_Incrementor ++;

           char id[256];
           ACE_OS::sprintf(id, "%s;%d;%d",
                           m_Identity.data(),
                           tv.sec(),
                           m_Incrementor);
           newSessionId = id;
        }

    private:
        std::string m_Identity;
        long m_Incrementor;
};

typedef ACE_Singleton<PANA_SessionIdGenerator, ACE_Null_Mutex> PANA_SessionIdGenerator_S;

#endif /* __PANA_UTL_H__ */

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