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/* rbacperm.c - RBAC permission */
/* $OpenLDAP$ */
/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
*
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted only as authorized by the OpenLDAP
* Public License.
*
* A copy of this license is available in the file LICENSE in the
* top-level directory of the distribution or, alternatively, at
* <http://www.OpenLDAP.org/license.html>.
*/
/* ACKNOWLEDGEMENTS:
*/
#include "portable.h"
#include <stdio.h>
#include <ac/string.h>
#include "slap.h"
#include "slap-config.h"
#include "lutil.h"
#include "rbac.h"
static int
rbac_read_permission_cb( Operation *op, SlapReply *rs )
{
rbac_callback_info_t *cbp = op->o_callback->sc_private;
rbac_ad_t *permission_ads;
rbac_permission_t *permp;
int i;
if ( rs->sr_type != REP_SEARCH ) return 0;
assert( cbp );
permp = ch_calloc( 1, sizeof(rbac_permission_t) );
permission_ads = cbp->tenantp->schema->permission_ads;
ber_dupbv( &permp->dn, &rs->sr_entry->e_name );
for ( i = 0; !BER_BVISNULL( &permission_ads[i].attr ); i++ ) {
Attribute *attr = NULL;
attr = attr_find( rs->sr_entry->e_attrs, *permission_ads[i].ad );
if ( attr != NULL ) {
switch ( permission_ads[i].type ) {
case RBAC_USERS:
ber_bvarray_dup_x( &permp->uids, attr->a_nvals, NULL );
break;
case RBAC_ROLES:
ber_bvarray_dup_x( &permp->roles, attr->a_nvals, NULL );
break;
default:
break;
}
}
}
cbp->private = (void *)permp;
return 0;
}
/*
* check whether roles assigned to a user allows access to roles in
* a permission, subject to role constraints
*/
int
rbac_check_session_permission(
rbac_session_t *sessp,
rbac_permission_t *permp,
rbac_constraint_t *role_constraints )
{
int rc = LDAP_INSUFFICIENT_ACCESS;
rbac_constraint_t *cp = NULL;
int i, j;
if ( !sessp->roles || !permp->roles ) goto done;
for ( i = 0; !BER_BVISNULL( &sessp->roles[i] ); i++ ) {
for ( j = 0; !BER_BVISNULL( &permp->roles[j] ); j++ ) {
if ( ber_bvstrcasecmp( &sessp->roles[i], &permp->roles[j] ) == 0 ) {
/* role temporal constraint */
cp = rbac_role2constraint( &permp->roles[j], role_constraints );
if ( !cp || rbac_check_time_constraint( cp ) == LDAP_SUCCESS ) {
rc = LDAP_SUCCESS;
goto done;
}
}
}
}
done:;
return rc;
}
rbac_permission_t *
rbac_read_permission( Operation *op, rbac_req_t *reqp )
{
slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
rbac_callback_info_t rbac_cb;
int rc = LDAP_SUCCESS;
char fbuf[1024];
struct berval filter = { sizeof(fbuf), fbuf };
char permbuf[1024];
struct berval permdn = { sizeof(permbuf), permbuf };
struct berval permndn = BER_BVNULL;
char pcls[] = "(objectClass=ftOperation)";
SlapReply rs2 = { REP_RESULT };
slap_callback cb = { 0 };
tenant_info_t *tenantp = rbac_tid2tenant( &reqp->tenantid );
#if 0 /* check valid object name and op name */
if ( !is_valid_opname( &reqp->opname ) ||
!is_valid_objname( &reqp->objname ) ) {
Debug( LDAP_DEBUG_ANY, "rbac_read_permission: "
"invalid opname (%s) or objname (%s)\n",
reqp->opname.bv_val, reqp->objname.bv_val );
rc = LDAP_UNWILLING_TO_PERFORM;
goto done;
}
#endif
if ( !tenantp ) {
Debug( LDAP_DEBUG_ANY, "rbac_read_permission: "
"missing tenant information\n" );
rc = LDAP_UNWILLING_TO_PERFORM;
goto done;
}
if ( reqp->objid.bv_val != NULL ) {
permdn.bv_len = snprintf( permdn.bv_val, permdn.bv_len,
"ftObjId=%s+ftOpNm=%s,ftObjNm=%s,%s", reqp->objid.bv_val,
reqp->opname.bv_val, reqp->objname.bv_val,
tenantp->permissions_basedn.bv_val );
} else {
permdn.bv_len = snprintf( permdn.bv_val, permdn.bv_len,
"ftOpNm=%s,ftObjNm=%s,%s", reqp->opname.bv_val,
reqp->objname.bv_val, tenantp->permissions_basedn.bv_val );
}
rc = dnNormalize( 0, NULL, NULL, &permdn, &permndn, NULL );
if ( rc != LDAP_SUCCESS ) {
Debug( LDAP_DEBUG_ANY, "rbac_read_permission: "
"unable to normalize permission DN\n" );
rc = LDAP_UNWILLING_TO_PERFORM;
goto done;
}
filter.bv_val = pcls;
filter.bv_len = strlen( pcls );
rbac_cb.tenantp = tenantp;
rbac_cb.private = NULL;
Operation op2 = *op;
cb.sc_private = &rbac_cb;
cb.sc_response = rbac_read_permission_cb;
op2.o_callback = &cb;
op2.o_tag = LDAP_REQ_SEARCH;
op2.o_dn = tenantp->admin;
op2.o_ndn = tenantp->admin;
op2.o_req_dn = permdn;
op2.o_req_ndn = permndn;
op2.ors_filterstr = filter;
op2.ors_filter = str2filter_x( &op2, filter.bv_val );
op2.ors_scope = LDAP_SCOPE_BASE;
op2.ors_attrs = tenantp->schema->perm_attrs;
op2.ors_tlimit = SLAP_NO_LIMIT;
op2.ors_slimit = SLAP_NO_LIMIT;
op2.ors_attrsonly = 0;
op2.ors_limit = NULL;
op2.o_bd = frontendDB;
rc = op2.o_bd->be_search( &op2, &rs2 );
filter_free_x( &op2, op2.ors_filter, 1 );
done:;
ch_free( permndn.bv_val );
if ( rc != LDAP_SUCCESS ) {
rbac_free_permission((rbac_permission_t *)rbac_cb.private);
}
return (rbac_permission_t *)rbac_cb.private;
}
void
rbac_free_permission( rbac_permission_t *permp )
{
if ( !permp ) return;
if ( !BER_BVISNULL( &permp->dn ) ) {
ber_memfree( permp->dn.bv_val );
}
if ( !BER_BVISNULL( &permp->internalId ) ) {
ber_memfree( permp->internalId.bv_val );
}
if ( permp->opName ) {
ber_bvarray_free( permp->opName );
}
if ( permp->objName ) {
ber_bvarray_free( permp->objName );
}
if ( !BER_BVISNULL( &permp->objectId ) ) {
ber_memfree( permp->objectId.bv_val );
}
if ( !BER_BVISNULL( &permp->abstractName ) ) {
ber_memfree( permp->abstractName.bv_val );
}
if ( !BER_BVISNULL( &permp->type ) ) {
ber_memfree( permp->type.bv_val );
}
if ( permp->roles ) {
ber_bvarray_free( permp->roles );
}
if ( permp->uids ) {
ber_bvarray_free( permp->uids );
}
ch_free( permp );
return;
}
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