libsecdb/common/getprofattr.c

	getprofattr.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (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 2004 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

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

#include <sys/types.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <nss_dbdefs.h>
#include <prof_attr.h>
#include <getxby_door.h>
#include <sys/mman.h>


/* Externs from libnsl */
extern profstr_t *_getprofnam(const char *, profstr_t *, char *, int, int *);
extern profstr_t *_getprofattr(profstr_t *, char *, int, int *);
extern void _setprofattr(void);
extern void _endprofattr(void);

static profattr_t *profstr2attr(profstr_t *);
static profstr_t *process_getprof(profstr_t *, char *, int, nsc_data_t *);


profattr_t *
getprofattr()
{
    int     err = 0;
    char        buf[NSS_BUFLEN_PROFATTR];
    profstr_t   prof;
    profstr_t   *tmp;

    tmp = _getprofattr(&prof, buf, NSS_BUFLEN_PROFATTR, &err);
    return (profstr2attr(tmp));
}


profattr_t *
getprofnam(const char *name)
{
    int     err = 0;
    int     ndata = 0;
    int     adata = 0;
    char        buf[NSS_BUFLEN_PROFATTR];
    profstr_t   prof;
    union {
        nsc_data_t  s_d;
        char        s_b[1024];
    } space;
    nsc_data_t  *sptr = (nsc_data_t *)NULL;
    profstr_t   *resptr = (profstr_t *)NULL;

    (void) memset(&prof, 0, sizeof (profstr_t));

#ifdef  PIC
    (void) memset(&space, 0, sizeof (space));

    if ((name == NULL) ||
        (strlen(name) >= (sizeof (space) - sizeof (nsc_data_t)))) {
        errno = ERANGE;
        return ((profattr_t *)NULL);
    }
    ndata = sizeof (space);
    adata = strlen(name) + sizeof (nsc_call_t) + 1;
    space.s_d.nsc_call.nsc_callnumber = GETPROFNAM;
    (void) strcpy(space.s_d.nsc_call.nsc_u.name, name);
    sptr = &space.s_d;

    switch (_nsc_trydoorcall(&sptr, &ndata, &adata)) {
    case SUCCESS:   /* positive cache hit */
        break;
    case NOTFOUND:  /* negative cache hit */
        return ((profattr_t *)NULL);
    default:
        (void) memset(&prof, 0, sizeof (profattr_t));
        resptr = _getprofnam(name, &prof, buf,
            NSS_BUFLEN_PROFATTR, &err);
        return (profstr2attr(resptr));
    }
    resptr = process_getprof(&prof, buf, NSS_BUFLEN_PROFATTR, sptr);

    /*
     * check if doors reallocated the memory underneath us
     * if they did munmap it or suffer a memory leak
     */
    if (sptr != &space.s_d)
        (void) munmap((void *)sptr, ndata);
#else   /* !PIC */
    resptr = _getprofnam(name, &prof, buf, NSS_BUFLEN_PROFATTR, &err);
#endif  /* PIC */

    return (profstr2attr(resptr));

}


void
setprofattr()
{
    _setprofattr();
}


void
endprofattr()
{
    _endprofattr();
}


void
free_profattr(profattr_t *prof)
{
    if (prof) {
        free(prof->name);
        free(prof->res1);
        free(prof->res2);
        free(prof->desc);
        _kva_free(prof->attr);
        free(prof);
    }
}


static profattr_t *
profstr2attr(profstr_t *prof)
{
    profattr_t *newprof;

    if (prof == NULL)
        return ((profattr_t *)NULL);

    if ((newprof = (profattr_t *)malloc(sizeof (profattr_t))) == NULL)
        return ((profattr_t *)NULL);

    newprof->name = _do_unescape(prof->name);
    newprof->res1 = _do_unescape(prof->res1);
    newprof->res2 = _do_unescape(prof->res2);
    newprof->desc = _do_unescape(prof->desc);
    newprof->attr = _str2kva(prof->attr, KV_ASSIGN, KV_DELIMITER);
    return (newprof);
}


static profstr_t *
process_getprof(
    profstr_t *result,
    char *buffer,
    int buflen,
    nsc_data_t *sptr)
{
    char *fixed;
#ifdef  _LP64
    profstr_t prof64;

    fixed = (char *)(((uintptr_t)buffer + 7) & ~7);
#else
    fixed = (char *)(((uintptr_t)buffer + 3) & ~3);
#endif
    buflen -= fixed - buffer;
    buffer = fixed;

    if (sptr->nsc_ret.nsc_return_code != SUCCESS)
        return ((profstr_t *)NULL);

#ifdef  _LP64
    if (sptr->nsc_ret.nsc_bufferbytesused - (int)sizeof (profstr32_t)
        > buflen)
#else
    if (sptr->nsc_ret.nsc_bufferbytesused - (int)sizeof (profstr_t)
        > buflen)
#endif
    {
        errno = ERANGE;
        return ((profstr_t *)NULL);
    }

#ifdef  _LP64
    (void) memcpy(buffer, (sptr->nsc_ret.nsc_u.buff + sizeof (profstr32_t)),
        (sptr->nsc_ret.nsc_bufferbytesused - sizeof (profstr32_t)));
    prof64.name = (char *)(sptr->nsc_ret.nsc_u.prof.name +
        (uintptr_t)buffer);
    prof64.res1 = (char *)(sptr->nsc_ret.nsc_u.prof.res1 +
        (uintptr_t)buffer);
    prof64.res2 = (char *)(sptr->nsc_ret.nsc_u.prof.res2 +
        (uintptr_t)buffer);
    prof64.desc = (char *)(sptr->nsc_ret.nsc_u.prof.desc +
        (uintptr_t)buffer);
    prof64.attr = (char *)(sptr->nsc_ret.nsc_u.prof.attr +
        (uintptr_t)buffer);
    *result = prof64;
#else
    sptr->nsc_ret.nsc_u.prof.name += (uintptr_t)buffer;
    sptr->nsc_ret.nsc_u.prof.res1 += (uintptr_t)buffer;
    sptr->nsc_ret.nsc_u.prof.res2 += (uintptr_t)buffer;
    sptr->nsc_ret.nsc_u.prof.desc += (uintptr_t)buffer;
    sptr->nsc_ret.nsc_u.prof.attr += (uintptr_t)buffer;
    *result = sptr->nsc_ret.nsc_u.prof;
    (void) memcpy(buffer, (sptr->nsc_ret.nsc_u.buff + sizeof (profstr_t)),
        (sptr->nsc_ret.nsc_bufferbytesused - sizeof (profstr_t)));
#endif
    return (result);
}


/*
 * Given a profile name, gets the list of profiles found from
 * the whole hierarchy, using the given profile as root
 */
void
getproflist(const char *profileName, char **profArray, int *profcnt)
{
    profattr_t  *profattr;
    char        *subprofiles, *lasts, *profname;
    int     i;

    /* Check if this is a duplicate */
    for (i = 0; i < *profcnt; i++) {
        if (strcmp(profileName, profArray[i]) == 0) {
            /* It's a duplicate, don't need to do anything */
            return;
        }
    }

    profArray[*profcnt] = strdup(profileName);
    *profcnt = *profcnt + 1;

    profattr = getprofnam(profileName);
    if (profattr == NULL) {
        return;
    }

    if (profattr->attr == NULL) {
        free_profattr(profattr);
        return;
    }

    subprofiles = kva_match(profattr->attr, PROFATTR_PROFS_KW);
    if (subprofiles == NULL) {
        free_profattr(profattr);
        return;
    }

    /* get execattr from each subprofiles */
    for (profname = (char *)strtok_r(subprofiles, ",", &lasts);
        profname != NULL;
        profname = (char *)strtok_r(NULL, ",", &lasts)) {
            getproflist(profname, profArray, profcnt);
    }
    free_profattr(profattr);
}

void
free_proflist(char **profArray, int profcnt)
{
    int i;
    for (i = 0; i < profcnt; i++) {
        free(profArray[i]);
    }
}


#ifdef DEBUG
void
print_profattr(profattr_t *prof)
{
    extern void print_kva(kva_t *);
    char *empty = "empty";

    if (prof == NULL) {
        printf("NULL\n");
        return;
    }

    printf("name=%s\n", prof->name ? prof->name : empty);
    printf("res1=%s\n", prof->res1 ? prof->res1 : empty);
    printf("res2=%s\n", prof->res2 ? prof->res2 : empty);
    printf("desc=%s\n", prof->desc ? prof->desc : empty);
    printf("attr=\n");
    print_kva(prof->attr);
    fflush(stdout);
}
#endif  /* DEBUG */