Tribblix: manual page: SLPFindAttrs.3slp

SLPFINDATTRS(3SLP) Service Location Protocol Library Functions

NAME

SLPFindAttrs - return service attributes

SYNOPSIS

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

SLPError SLPFindAttrs(SLPHandle hSLP, const char *pcURL,
const char *pcScopeList, const char *pcAttrIds,
SLPAttrCallback *callback, void *pvCookie);

DESCRIPTION

The SLPFindAttrs() function returns service attributes matching the
attribute tags for the indicated full or partial URL.If pcURL is a
complete URL, the attribute information returned is for that
particular service in the language locale of the SLPHandle. If
pcURL is a service type, then all attributes for the service type
are returned, regardless of the language of registration. Results are
returned through the callback parameter.

The result is filtered with an SLP attribute request filter
string parameter, the syntax of which is described in RFC
2608. If the filter string is the empty string, "", all
attributes are returned.

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 attributes. It cannot be NULL.

pcURL
The full or partial URL. See RFC 2608 for partial URL
syntax. It 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, "".

pcAttrIds
The filter string indicating which attribute values
to return. Use empty string "" to indicate all
values. Wildcards matching all attribute ids having
a particular prefix or suffix are also possible. It
cannot be NULL.

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

pvCookie
Memory passed to the callback code from the client. It
may 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: Returning Service Attributes for a Specific URL

Use the following example to return the attributes "location" and
"dpi" for the URL "service:printer:lpr://serv/queue1" through the
callback attrReturn:

SLPHandle hSLP;
SLPAttrCallback attrReturn;
SLPError err;

err = SLPFindAttrs(hSLP "service:printer:lpr://serv/queue1",
"default", "location,dpi", attrReturn, err);

Example 2: Returning Service Attributes for All URLs of a Specific

Type

Use the following example to return the attributes "location" and
"dpi" for all service URLs having type "service:printer:lpr":

err = SLPFindAttrs(hSLP, "service:printer:lpr",
"default", "location, pi",
attrReturn, NULL);

ENVIRONMENT VARIABLES

SLP_CONF_FILE
When set, use this file for configuration.