files/common/getprinter.c

	getprinter.c revision cb5caa98562cf06753163f558cbcfe30b8f4673a
/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 *  files/printers_getbyname.c -- "files" backend for
 *  nsswitch "printers" database.
 *
 * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#pragma ident   "%Z%%M% %I% %E% SMI"

static const char *printers = "/etc/printers.conf";

#pragma weak _nss_files__printers_constr = _nss_files_printers_constr

#include "files_common.h"
#include <stdlib.h>
#include <strings.h>

static int
check_name(nss_XbyY_args_t *argp, const char *line, int linelen)
{

    const char  *limit, *linep;
    const char  *keyp = argp->key.name;
    int     klen = strlen(keyp);

    linep = line;
    limit = line + linelen;

    /*
     * find the name in the namelist a|b|c...:
     */
    while (linep+klen < limit && *linep != '|' && *linep != ':') {
        if ((strncmp(linep, keyp, klen) == 0) &&
            ((*(linep + klen) == '|') || (*(linep + klen) == ':'))) {
            return (1);
        } else {
            while (linep < limit && *linep != '|' && *linep != ':')
                linep++;
            if (linep >= limit || *linep == ':')
                return (0);
            if (*linep == '|')
                linep++;
        }
    }
    return (0);
}

static nss_status_t
getbyname(be, a)
    files_backend_ptr_t be;
    void            *a;
{
    nss_XbyY_args_t     *argp = (nss_XbyY_args_t *)a;

    return (_nss_files_XY_all(be, argp, 1, argp->key.name,
            check_name));
}

static files_backend_op_t printers_ops[] = {
    _nss_files_destr,
    _nss_files_endent,
    _nss_files_setent,
    _nss_files_getent_rigid,
    getbyname
};

/*ARGSUSED*/
nss_backend_t *
_nss_files_printers_constr(dummy1, dummy2, dummy3)
    const char  *dummy1, *dummy2, *dummy3;
{
    return (_nss_files_constr(printers_ops,
            sizeof (printers_ops) / sizeof (printers_ops[0]),
            printers,
            NSS_LINELEN_PRINTERS,
            NULL));
}