lib/lp/tx.c

	tx.c revision 45916cd2fec6e79bca5dee0421bd39e3c2910d1e
/*
 * 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
 */

/*
 * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

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

#include <sys/types.h>
#include <sys/zone.h>
#include <syslog.h>
#include <strings.h>

#include <ucred.h>
#include "tsol/label.h"
/* lpsched include files */
#if defined PS_FAULTED
#undef  PS_FAULTED
#endif /* PS_FAULTED */
#include "lp.h"

/*
 * get_labeled_zonename - gets the the zonename with the same label.
 *
 *  Input:
 *      slabel - USER_CLEAR label to match
 *
 *  Output:
 *      -1 - zonename with that label could not be found
 *          or no memory for zonename
 *       0 - label was GLOBAL_ZONENAME
 *       addr - zonename of zone matching USER_CLEAR label
 *          must be retuened by calling Free(addr)
 *
 */

char *
get_labeled_zonename(char *slabel)
{
    m_label_t   *bsl = NULL;
    int err = 0;
    ssize_t zonename_size = -1;
    zoneid_t    zid = -1;
    char *zname = NULL;

    syslog(LOG_DEBUG, "lpsched: get_labeled_zonename %s", slabel);
    /*
     * convert the label to binary.
     */
    if (str_to_label(slabel, &bsl, USER_CLEAR,
        L_NO_CORRECTION, &err) == -1) {
        /* label could not be converted, error */
        syslog(LOG_WARNING,
            "lpsched: %s: label not recognized (error==%d)",
            slabel, err);
        return ((char *)-1);
    }
    if ((zid = getzoneidbylabel(bsl)) < 0) {
        /* no zone with that label, cannot send mail */
        syslog(LOG_WARNING,
            "lpsched: cannot send mail, no zone with %s label",
            slabel);
        m_label_free(bsl);
        return ((char *)-1);
    }
    zname = Malloc(ZONENAME_MAX + 1);
    if ((zonename_size = getzonenamebyid(zid, zname, ZONENAME_MAX + 1))
        == -1) {
        /* cannot get zone name, cannot send mail */
        syslog(LOG_WARNING,
            "lpsched: cannot send mail, no zone name for %s",
            slabel);
        m_label_free(bsl);
        Free(zname);
        return ((char *)-1);
    } else {
        m_label_free(bsl);
        if (strcmp(zname, GLOBAL_ZONENAME) == 0) {
            Free(zname);
            zname = NULL;
        }
    }
    return (zname);
}

int
get_peer_label(int fd, char **slabel)
{
    if (is_system_labeled()) {
        ucred_t *uc = NULL;
        m_label_t *sl;
        char *pslabel = NULL; /* peer's slabel */

        if ((fd < 0) || (slabel == NULL)) {
            errno = EINVAL;
            return (-1);
        }

        if (getpeerucred(fd, &uc) == -1)
            return (-1);

        sl = ucred_getlabel(uc);
        if (label_to_str(sl, &pslabel, M_INTERNAL, DEF_NAMES) != 0)
            syslog(LOG_WARNING, "label_to_str(): %m");
        ucred_free(uc);

        if (pslabel != NULL) {
            syslog(LOG_DEBUG, "get_peer_label(%d, %s): becomes %s",
                fd, (*slabel ? *slabel : "NULL"), pslabel);
            if (*slabel != NULL)
                free(*slabel);
            *slabel = strdup(pslabel);
        }
    }

    return (0);
}