gena_callback2.c

电驴下载工具eMule0.47aVeryCD的源代码,可作分析测试也可用于P2P软件的开发研究.

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#include "config.h"
#if EXCLUDE_GENA == 0
#include "gena.h"
#include "gena_device.h"
#include "gena_ctrlpt.h"

#include "httpparser.h"
#include "httpreadwrite.h"
#include "statcodes.h"
#include "unixutil.h"

/************************************************************************
* Function : error_respond									
*																	
* Parameters:														
*	IN SOCKINFO *info: Structure containing information about the socket
*	IN int error_code: error code that will be in the GENA response
*	IN http_message_t* hmsg: GENA request Packet 
*
* Description:														
*	This function send an error message to the control point in the case
*	incorrect GENA requests.
*
* Returns: int
*	UPNP_E_SUCCESS if successful else appropriate error
***************************************************************************/
void
error_respond( IN SOCKINFO * info,
               IN int error_code,
               IN http_message_t * hmsg )
{
    int major,
      minor;

    // retrieve the minor and major version from the GENA request
    http_CalcResponseVersion( hmsg->major_version,
                              hmsg->minor_version, &major, &minor );

    http_SendStatusResponse( info, error_code, major, minor );
}

/************************************************************************
* Function : genaCallback									
*																	
* Parameters:														
*	IN http_parser_t *parser: represents the parse state of the request
*	IN http_message_t* request: HTTP message containing GENA request
*	INOUT SOCKINFO *info: Structure containing information about the socket
*
* Description:														
*	This is the callback function called by the miniserver to handle 
*	incoming GENA requests. 
*
* Returns: int
*	UPNP_E_SUCCESS if successful else appropriate error
***************************************************************************/
void
genaCallback( IN http_parser_t * parser,
              IN http_message_t * request,
              INOUT SOCKINFO * info )
{
    xboolean found_function = FALSE;

    if( request->method == HTTPMETHOD_SUBSCRIBE ) {
        DEVICEONLY( found_function = TRUE;
                    if( httpmsg_find_hdr( request, HDR_NT, NULL ) == NULL )
                    {
                    // renew subscription
                    gena_process_subscription_renewal_request
                    ( info, request );}
                    else
                    {
                    // subscribe
                    gena_process_subscription_request( info, request );}

                    DBGONLY( UpnpPrintf
                             ( UPNP_ALL, GENA, __FILE__, __LINE__,
                               "got subscription request\n" ); )
             )
            }
            else
        if( request->method == HTTPMETHOD_UNSUBSCRIBE ) {
            DEVICEONLY( found_function = TRUE;
                        // unsubscribe
                        gena_process_unsubscribe_request( info,
                                                          request ); )
        } else if( request->method == HTTPMETHOD_NOTIFY ) {
            CLIENTONLY( found_function = TRUE;
                        // notify
                        gena_process_notification_event( info, request ); )
        }

        if( !found_function ) {
            // handle missing functions of device or ctrl pt
            error_respond( info, HTTP_NOT_IMPLEMENTED, request );
        }
    }
#endif // EXCLUDE_GENA