slpfindattrs.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

/****************************************************************************/
/* Test for SLPFindAttrs                                                    */
/* Creation Date: Wed May 24 14:26:50 EDT 2000                              */
/****************************************************************************/
#include <slp.h>
#include <slp_debug.h>
#include <stdio.h>
#include <string.h>

SLPBoolean
MySLPSrvURLCallback (SLPHandle hslp,
		     const char *srvurl,
		     unsigned short lifetime, SLPError errcode, void *cookie)
{
	switch(errcode) {
		case SLP_OK:
			printf ("Service URL                   = %s\n", srvurl);
			*(SLPError *) cookie = SLP_OK;
			break;
		case SLP_LAST_CALL:
			break;
		default:
			*(SLPError *) cookie = errcode;
			break;
	} /* End switch. */

	return SLP_TRUE;
}
void MySLPRegReport(SLPHandle hslp, SLPError errcode, void* cookie)
{
    /* return the error code in the cookie */
    *(SLPError*)cookie = errcode;
}

SLPBoolean 
MySLPAttrCallback (SLPHandle hslp,
					const char* attrlist, 
					SLPError errcode, 
					void* cookie ) 
{
	switch(errcode) {
		case SLP_OK:
			printf ("Service Attributes            = %s\n", attrlist);
			*(SLPError *) cookie = SLP_OK;
			break;
		case SLP_LAST_CALL:
			break;
		default:
	    	check_error_state(errcode, "Error on Attribute Callback.");
			*(SLPError *) cookie = errcode;
			break;
	} /* End switch. */
	return(1);
}

int
main (int argc, char *argv[])
{
	SLPError err;
	SLPError callbackerr;
	SLPHandle hslp;

	char	server_url[4096];
	char	*attrids;
  	char	reg_string[MAX_STRING_LENGTH];

	if ((argc != 4) && (argc != 5))
	{
		printf("SLPFindAttrs\n  This test the SLP Find Attributes.\n Usage:\n   SLPFindAttrs <srv name> <srv adr> <atrb name = value> <atrb query>\n   SLPFindAttrs <srv name> <srv adr> <atrb query>\n");
		return(0);
	}

	err = SLPOpen ("en", SLP_FALSE, &hslp);
	check_error_state(err, "Error opening slp handle");

	if (argc == 5)
	{
		sprintf(reg_string, "%s://%s", argv[1], argv[2]);
	    printf("Registering                   = %s\n",reg_string);
	    /* Register a service with SLP */
		err = SLPReg( hslp,
					reg_string,
					SLP_LIFETIME_MAXIMUM,
					NULL,
					argv[3],
					SLP_TRUE,
					MySLPRegReport,
					&callbackerr );

		check_error_state(err, "Error registering service with slp.");
		check_error_state(callbackerr, "Error registering service with slp.");
	} /* End If. */

	// Check to ensure the service we want to ask about is actually there.
    printf("Querying                      = %s\n",argv[1]);
	err = SLPFindSrvs (
			hslp, 
			argv[1],
			NULL,		/* use configured scopes */
			NULL,		/* no attr filter        */
			MySLPSrvURLCallback,
			&callbackerr);
	check_error_state(err, "Error verifying service with slp.");
	check_error_state(callbackerr, "Error verifying service with slp.");

	// Check to see if the attrivbutes are set correctly
	if (argc == 4)
		attrids = (char *) strdup(argv[3]);
	else
		attrids = (char *) strdup(argv[4]);
	sprintf(server_url, "%s://%s", argv[1], argv[2]);
	printf("Querying Attributes           = %s\n", attrids);
	err = SLPFindAttrs( 
			hslp,
			server_url,
            NULL,
            attrids,
			MySLPAttrCallback,
            &callbackerr);
	check_error_state(err, "Error find service attributes.");

	/* Now that we're done using slp, close the slp handle */
	SLPClose (hslp);

	return(0);
}