SLPFINDSRVS(3SLP) Service Location Protocol Library Functions SLPFINDSRVS(3SLP)


NAME


SLPFindSrvs - return service URLs

SYNOPSIS


cc [ flag... ] file... -lslp [ library... ]
#include <slp.h>

SLPError SLPFindSrvs(SLPHandle hSLP, const char *pcServiceType,
const char *pcScopeList, const char *pcSearchFilter,
SLPSrvURLCallback *callback, void *pvCookie);


DESCRIPTION


The SLPFindSrvs() function issues a request for SLP services. The query
is for services on a language-specific SLPHandle. It returns the results
through the callback. The parameters will determine the results.


If an error occurs in starting the operation, one of the SLPError
codes is returned.

PARAMETERS


hSLP
The language-specific SLPHandle on which to search for
services. It cannot be NULL.


pcServiceType
The service type string for the request. The
pcServiceType can be discovered by a call to
SLPSrvTypes(). Examples of service type strings include

"service:printer:lpr"

or

"service:nfs"

pcServiceType cannot be NULL.


pcScopeList
A pointer to a char containing a comma-separated list
of scope names. It cannot be NULL or an empty string,
"".


pcSearchFilter
A query formulated of attribute pattern matching
expressions in the form of a LDAPv3 search filter. See
RFC 2254. If this filter is empty, "", all services of
the requested type in the specified scopes are
returned. It cannot be NULL.


callback
A callback through which the results of the operation
are reported. It cannot be NULL.


pvCookie
Memory passed to the callback code from the client. It
can be NULL.


ERRORS


This function or its callback may return any SLP error code. See the
ERRORS section in slp_api(3SLP).

EXAMPLES


Example 1: Using SLPFindSrvs()




The following example finds all advertisements for printers supporting
the LPR protocol with the dpi attribute 300 in the default scope:


SLPError err;
SLPHandle hSLP;
SLPSrvURLCallback srvngst;

err = SLPFindSrvs(hSLP,
"service:printer:lpr",
"default",
"(dpi=300)",
srvngst,
NULL);


ENVIRONMENT VARIABLES


SLP_CONF_FILE
When set, use this file for configuration.


SEE ALSO


slpd(1M), slp_api(3SLP), slp.conf(4), slpd.reg(4), attributes(5)


System Administration Guide: Network Services


Howes, T. RFC 2254, The String Representation of LDAP Search Filters. The
Internet Society. 1997.


Guttman, E., Perkins, C., Veizades, J., and Day, M. RFC 2608, Service
Location Protocol, Version 2. The Internet Society. June 1999.


Kempf, J. and Guttman, E. RFC 2614, An API for Service Location. The
Internet Society. June 1999.


January 16, 2003 SLPFINDSRVS(3SLP)