libslp_handle.c

SLP协议在linux下的实现。此版本为1.2.1版。官方网站为www.openslp.org

#endif
		
    G_OpenSLPHandleCount ++;  

    *phSLP = (SLPHandle)handle; 

    FINISHED:                  

    if(result)
    {
        *phSLP = 0;
    }

    return result;
}


/*=========================================================================*/
void SLPAPI SLPClose(SLPHandle hSLP)                                             
/*                                                                         */
/* Frees all resources associated with the handle.  If the handle was      */
/* invalid, the function returns silently.  Any outstanding synchronous    */
/* or asynchronous operations are cancelled so their callback functions    */
/* will not be called any further.                                         */
/*                                                                         */
/* SLPHandle    A SLPHandle handle returned from a call to SLPOpen().      */
/*=========================================================================*/
{
    PSLPHandleInfo   handle;

    /*------------------------------*/
    /* check for invalid parameters */
    /*------------------------------*/
    if(hSLP == 0 || *(unsigned int*)hSLP != SLP_HANDLE_SIG)
    {
        return;
    }

    handle = (PSLPHandleInfo)hSLP;

    if(handle->isAsync)
    {
        /* TODO: stop the usage of this handle (kill threads, etc) */
    }

    if(handle->langtag)
    {
        xfree(handle->langtag);
    }

    if(handle->dasock >=0)
    {
#ifdef _WIN32
        closesocket(handle->dasock);
#else
        close(handle->dasock);
#endif
    }

    if(handle->dascope)
    {
        xfree(handle->dascope);
    }

    if(handle->sasock >=0)
    {
#ifdef _WIN32
        closesocket(handle->sasock);
#else
        close(handle->sasock);
#endif
    }

    if(handle->sascope)
    {
        xfree(handle->sascope);
    }

#ifdef ENABLE_SLPv2_SECURITY
    if(handle->hspi) SLPSpiClose(handle->hspi);
#endif

    handle->sig = 0;  /* If they use the handle again, it won't be valid */

    xfree(hSLP);

    G_OpenSLPHandleCount --;
    

#if DEBUG
    /* Free additional resources if this is the last handle open */
    if(G_OpenSLPHandleCount <= 0)
    {
        G_OpenSLPHandleCount = 0;

        SLPPropertyFreeAll();
        
        KnownDAFreeAll();
        
        xmalloc_deinit();
    }
#endif

}


#ifndef MI_NOT_SUPPORTED
/*=========================================================================*/
SLPError SLPAssociateIFList( SLPHandle hSLP, const char* McastIFList)
/*                                                                         */
/* Associates a list of interfaces McastIFList on which multicast needs to */
/* be done with a particular SLPHandle hSLP. McastIFList is a comma        */
/* separated list of host interface IP addresses.                          */
/*                                                                         */
/* hSLP                 The SLPHandle with which the interface list is to  */
/*                      be associated with.                                */
/*                                                                         */
/* McastIFList          A comma separated list of host interface IP        */
/*                      addresses on which multicast needs to be done.     */
/*                                                                         */
/* Returns  SLPError code                                                  */
/*=========================================================================*/
{

    PSLPHandleInfo      handle;

    /*------------------------------*/
    /* check for invalid parameters */
    /*------------------------------*/
    if(hSLP            == 0 ||
       *(unsigned int*)hSLP != SLP_HANDLE_SIG ||
       McastIFList == 0 ||
       *McastIFList == 0)  /* interface list can't be empty string */
    {
        return SLP_PARAMETER_BAD;
    }

    handle = (PSLPHandleInfo)hSLP;

#ifdef DEBUG
    fprintf(stderr, "SLPAssociateIFList(): McastIFList = %s\n", McastIFList);
#endif

        handle->McastIFList = McastIFList;

    return SLP_OK;
}
#endif /* MI_NOT_SUPPORTED */


#ifndef UNICAST_NOT_SUPPORTED
/*=========================================================================*/
SLPError SLPAssociateIP( SLPHandle hSLP, const char* unicast_ip)
/*                                                                         */
/* Associates an IP address unicast_ip with a particular SLPHandle hSLP.   */
/* unicast_ip is the IP address of the SA/DA from which service is         */
/* requested.                                                              */
/*                                                                         */
/* hSLP                 The SLPHandle with which the unicast_ip address is */
/*                      to be associated with.                             */
/*                                                                         */
/* unicast_ip           IP address of the SA/DA from which service is      */
/*                      requested.                                         */
/*                                                                         */
/* Returns  SLPError code                                                  */
/*=========================================================================*/
{

    PSLPHandleInfo      handle;

    /*------------------------------*/
    /* check for invalid parameters */
    /*------------------------------*/
    if(hSLP            == 0 ||
       *(unsigned int*)hSLP != SLP_HANDLE_SIG ||
       unicast_ip == 0 ||
       *unicast_ip == 0)  /* unicast address not specified */
    {
        return SLP_PARAMETER_BAD;
    }

    handle = (PSLPHandleInfo)hSLP;

#ifdef DEBUG
    fprintf(stderr, "SLPAssociateIP(): unicast_ip = %s\n", unicast_ip);
#endif
    handle->dounicast = 1;
    handle->unicastaddr.sin_family = AF_INET;
    if (inet_aton(unicast_ip, ((struct in_addr *)(&handle->unicastaddr.sin_addr))) == 0 )
    {
        return SLP_PARAMETER_BAD;
    }
    handle->unicastaddr.sin_port = htons(SLP_RESERVED_PORT);

    return SLP_OK;
}
#endif