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openldap/servers/slapd/backend.c

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/* $OpenLDAP$ */
/*
* Copyright 1998-2002 The OpenLDAP Foundation, All Rights Reserved.
* COPYING RESTRICTIONS APPLY, see COPYRIGHT file
*/
/* backend.c - routines for dealing with back-end databases */
#include "portable.h"
#include <stdio.h>
#include <ac/string.h>
#include <ac/socket.h>
#include <sys/stat.h>
#include "slap.h"
#include "lutil.h"
#include "lber_pvt.h"
/*
* If a module is configured as dynamic, its header should not
* get included into slapd. While this is a general rule and does
* not have much of an effect in UNIX, this rule should be adhered
* to for Windows, where dynamic object code should not be implicitly
* imported into slapd without appropriate __declspec(dllimport) directives.
*/
#if defined(SLAPD_BDB) && !defined(SLAPD_BDB_DYNAMIC)
#include "back-bdb/external.h"
#endif
#if defined(SLAPD_DNSSRV) && !defined(SLAPD_DNSSRV_DYNAMIC)
#include "back-dnssrv/external.h"
#endif
#if defined(SLAPD_LDAP) && !defined(SLAPD_LDAP_DYNAMIC)
#include "back-ldap/external.h"
#endif
#if defined(SLAPD_LDBM) && !defined(SLAPD_LDBM_DYNAMIC)
#include "back-ldbm/external.h"
#endif
#if defined(SLAPD_META) && !defined(SLAPD_META_DYNAMIC)
#include "back-meta/external.h"
#endif
#if defined(SLAPD_MONITOR) && !defined(SLAPD_MONITOR_DYNAMIC)
#include "back-monitor/external.h"
#endif
#if defined(SLAPD_NULL) && !defined(SLAPD_NULL_DYNAMIC)
#include "back-null/external.h"
#endif
#if defined(SLAPD_PASSWD) && !defined(SLAPD_PASSWD_DYNAMIC)
#include "back-passwd/external.h"
#endif
#if defined(SLAPD_PERL) && !defined(SLAPD_PERL_DYNAMIC)
#include "back-perl/external.h"
#endif
#if defined(SLAPD_SHELL) && !defined(SLAPD_SHELL_DYNAMIC)
#include "back-shell/external.h"
#endif
#if defined(SLAPD_TCL) && !defined(SLAPD_TCL_DYNAMIC)
#include "back-tcl/external.h"
#endif
#if defined(SLAPD_SQL) && !defined(SLAPD_SQL_DYNAMIC)
#include "back-sql/external.h"
#endif
#if defined(SLAPD_PRIVATE) && !defined(SLAPD_PRIVATE_DYNAMIC)
#include "private/external.h"
#endif
static BackendInfo binfo[] = {
#if defined(SLAPD_BDB) && !defined(SLAPD_BDB_DYNAMIC)
{"bdb", bdb_initialize},
#endif
#if defined(SLAPD_DNSSRV) && !defined(SLAPD_DNSSRV_DYNAMIC)
{"dnssrv", dnssrv_back_initialize},
#endif
#if defined(SLAPD_LDAP) && !defined(SLAPD_LDAP_DYNAMIC)
{"ldap", ldap_back_initialize},
#endif
#if defined(SLAPD_LDBM) && !defined(SLAPD_LDBM_DYNAMIC)
{"ldbm", ldbm_back_initialize},
#endif
#if defined(SLAPD_META) && !defined(SLAPD_META_DYNAMIC)
{"meta", meta_back_initialize},
#endif
#if defined(SLAPD_MONITOR) && !defined(SLAPD_MONITOR_DYNAMIC)
{"monitor", monitor_back_initialize},
#endif
#if defined(SLAPD_NULL) && !defined(SLAPD_NULL_DYNAMIC)
{"null", null_back_initialize},
#endif
#if defined(SLAPD_PASSWD) && !defined(SLAPD_PASSWD_DYNAMIC)
{"passwd", passwd_back_initialize},
#endif
#if defined(SLAPD_PERL) && !defined(SLAPD_PERL_DYNAMIC)
{"perl", perl_back_initialize},
#endif
#if defined(SLAPD_SHELL) && !defined(SLAPD_SHELL_DYNAMIC)
{"shell", shell_back_initialize},
#endif
#if defined(SLAPD_TCL) && !defined(SLAPD_TCL_DYNAMIC)
{"tcl", tcl_back_initialize},
#endif
#if defined(SLAPD_SQL) && !defined(SLAPD_SQL_DYNAMIC)
{"sql", sql_back_initialize},
#endif
/* for any private backend */
#if defined(SLAPD_PRIVATE) && !defined(SLAPD_PRIVATE_DYNAMIC)
{"private", private_back_initialize},
#endif
{NULL}
};
int nBackendInfo = 0;
BackendInfo *backendInfo = NULL;
int nBackendDB = 0;
BackendDB *backendDB = NULL;
int backend_init(void)
{
int rc = -1;
if((nBackendInfo != 0) || (backendInfo != NULL)) {
/* already initialized */
#ifdef NEW_LOGGING
LDAP_LOG( BACKEND, ERR,
"backend_init: backend already initialized\n", 0, 0, 0 );
#else
Debug( LDAP_DEBUG_ANY,
"backend_init: already initialized.\n", 0, 0, 0 );
#endif
return -1;
}
for( ;
binfo[nBackendInfo].bi_type != NULL;
nBackendInfo++ )
{
rc = binfo[nBackendInfo].bi_init( &binfo[nBackendInfo] );
if(rc != 0) {
#ifdef NEW_LOGGING
LDAP_LOG( BACKEND, INFO,
"backend_init: initialized for type \"%s\"\n",
binfo[nBackendInfo].bi_type, 0, 0 );
#else
Debug( LDAP_DEBUG_ANY,
"backend_init: initialized for type \"%s\"\n",
binfo[nBackendInfo].bi_type, 0, 0 );
#endif
/* destroy those we've already inited */
for( nBackendInfo--;
nBackendInfo >= 0 ;
nBackendInfo-- )
{
if ( binfo[nBackendInfo].bi_destroy ) {
binfo[nBackendInfo].bi_destroy(
&binfo[nBackendInfo] );
}
}
return rc;
}
}
if ( nBackendInfo > 0) {
backendInfo = binfo;
return 0;
}
#ifdef SLAPD_MODULES
return 0;
#else
#ifdef NEW_LOGGING
LDAP_LOG( BACKEND, ERR, "backend_init: failed\n", 0, 0, 0 );
#else
Debug( LDAP_DEBUG_ANY,
"backend_init: failed\n",
0, 0, 0 );
#endif
return rc;
#endif /* SLAPD_MODULES */
}
int backend_add(BackendInfo *aBackendInfo)
{
int rc = 0;
if ((rc = aBackendInfo->bi_init(aBackendInfo)) != 0) {
#ifdef NEW_LOGGING
LDAP_LOG( BACKEND, ERR,
"backend_add: initialization for type \"%s\" failed\n",
aBackendInfo->bi_type, 0, 0 );
#else
Debug( LDAP_DEBUG_ANY,
"backend_add: initialization for type \"%s\" failed\n",
aBackendInfo->bi_type, 0, 0 );
#endif
return rc;
}
/* now add the backend type to the Backend Info List */
{
BackendInfo *newBackendInfo = 0;
/* if backendInfo == binfo no deallocation of old backendInfo */
if (backendInfo == binfo) {
newBackendInfo = ch_calloc(nBackendInfo + 1, sizeof(BackendInfo));
AC_MEMCPY(newBackendInfo, backendInfo, sizeof(BackendInfo) *
nBackendInfo);
} else {
newBackendInfo = ch_realloc(backendInfo, sizeof(BackendInfo) *
(nBackendInfo + 1));
}
AC_MEMCPY(&newBackendInfo[nBackendInfo], aBackendInfo,
sizeof(BackendInfo));
backendInfo = newBackendInfo;
nBackendInfo++;
return 0;
}
}
int backend_startup(Backend *be)
{
int i;
int rc = 0;
if( ! ( nBackendDB > 0 ) ) {
/* no databases */
#ifdef NEW_LOGGING
LDAP_LOG( BACKEND, INFO,
"backend_startup: %d databases to startup. \n", nBackendDB, 0, 0 );
#else
Debug( LDAP_DEBUG_ANY,
"backend_startup: %d databases to startup.\n",
nBackendDB, 0, 0 );
#endif
return 1;
}
if(be != NULL) {
/* startup a specific backend database */
#ifdef NEW_LOGGING
LDAP_LOG( BACKEND, DETAIL1, "backend_startup: starting \"%s\"\n",
be->be_suffix[0].bv_val, 0, 0 );
#else
Debug( LDAP_DEBUG_TRACE,
"backend_startup: starting \"%s\"\n",
be->be_suffix[0].bv_val, 0, 0 );
#endif
if ( be->bd_info->bi_open ) {
rc = be->bd_info->bi_open( be->bd_info );
if ( rc != 0 ) {
#ifdef NEW_LOGGING
LDAP_LOG( BACKEND, CRIT, "backend_startup: bi_open failed!\n", 0, 0, 0 );
#else
Debug( LDAP_DEBUG_ANY,
"backend_startup: bi_open failed!\n",
0, 0, 0 );
#endif
return rc;
}
}
if ( be->bd_info->bi_db_open ) {
rc = be->bd_info->bi_db_open( be );
if ( rc != 0 ) {
#ifdef NEW_LOGGING
LDAP_LOG( BACKEND, CRIT,
"backend_startup: bi_db_open failed! (%d)\n", rc, 0, 0 );
#else
Debug( LDAP_DEBUG_ANY,
"backend_startup: bi_db_open failed! (%d)\n",
rc, 0, 0 );
#endif
return rc;
}
}
return rc;
}
/* open each backend type */
for( i = 0; i < nBackendInfo; i++ ) {
if( backendInfo[i].bi_nDB == 0) {
/* no database of this type, don't open */
continue;
}
if( backendInfo[i].bi_open ) {
rc = backendInfo[i].bi_open(
&backendInfo[i] );
if ( rc != 0 ) {
#ifdef NEW_LOGGING
LDAP_LOG( BACKEND, CRIT,
"backend_startup: bi_open %d failed!\n", i, 0, 0 );
#else
Debug( LDAP_DEBUG_ANY,
"backend_startup: bi_open %d failed!\n",
i, 0, 0 );
#endif
return rc;
}
}
}
/* open each backend database */
for( i = 0; i < nBackendDB; i++ ) {
/* append global access controls */
acl_append( &backendDB[i].be_acl, global_acl );
if ( backendDB[i].bd_info->bi_db_open ) {
rc = backendDB[i].bd_info->bi_db_open(
&backendDB[i] );
if ( rc != 0 ) {
#ifdef NEW_LOGGING
LDAP_LOG( BACKEND, CRIT,
"backend_startup: bi_db_open(%d) failed! (%d)\n", i, rc, 0 );
#else
Debug( LDAP_DEBUG_ANY,
"backend_startup: bi_db_open(%d) failed! (%d)\n",
i, rc, 0 );
#endif
return rc;
}
}
}
return rc;
}
int backend_num( Backend *be )
{
int i;
if( be == NULL ) return -1;
for( i = 0; i < nBackendDB; i++ ) {
if( be == &backendDB[i] ) return i;
}
return -1;
}
int backend_shutdown( Backend *be )
{
int i;
int rc = 0;
if( be != NULL ) {
/* shutdown a specific backend database */
if ( be->bd_info->bi_nDB == 0 ) {
/* no database of this type, we never opened it */
return 0;
}
if ( be->bd_info->bi_db_close ) {
be->bd_info->bi_db_close( be );
}
if( be->bd_info->bi_close ) {
be->bd_info->bi_close( be->bd_info );
}
return 0;
}
/* close each backend database */
for( i = 0; i < nBackendDB; i++ ) {
if ( backendDB[i].bd_info->bi_db_close ) {
backendDB[i].bd_info->bi_db_close(
&backendDB[i] );
}
if(rc != 0) {
#ifdef NEW_LOGGING
LDAP_LOG( BACKEND, NOTICE,
"backend_shutdown: bi_close %s failed!\n",
backendDB[i].be_type, 0, 0 );
#else
Debug( LDAP_DEBUG_ANY,
"backend_close: bi_close %s failed!\n",
backendDB[i].be_type, 0, 0 );
#endif
}
}
/* close each backend type */
for( i = 0; i < nBackendInfo; i++ ) {
if( backendInfo[i].bi_nDB == 0 ) {
/* no database of this type */
continue;
}
if( backendInfo[i].bi_close ) {
backendInfo[i].bi_close(
&backendInfo[i] );
}
}
return 0;
}
int backend_destroy(void)
{
int i;
BackendDB *bd;
/* destroy each backend database */
for( i = 0, bd = backendDB; i < nBackendDB; i++, bd++ ) {
if ( bd->bd_info->bi_db_destroy ) {
bd->bd_info->bi_db_destroy( bd );
}
ber_bvarray_free( bd->be_suffix );
ber_bvarray_free( bd->be_nsuffix );
if ( bd->be_rootdn.bv_val ) free( bd->be_rootdn.bv_val );
if ( bd->be_rootndn.bv_val ) free( bd->be_rootndn.bv_val );
if ( bd->be_rootpw.bv_val ) free( bd->be_rootpw.bv_val );
acl_destroy( bd->be_acl, global_acl );
}
free( backendDB );
/* destroy each backend type */
for( i = 0; i < nBackendInfo; i++ ) {
if( backendInfo[i].bi_destroy ) {
backendInfo[i].bi_destroy(
&backendInfo[i] );
}
}
#ifdef SLAPD_MODULES
if (backendInfo != binfo) {
free(backendInfo);
}
#endif /* SLAPD_MODULES */
nBackendInfo = 0;
backendInfo = NULL;
return 0;
}
BackendInfo* backend_info(const char *type)
{
int i;
/* search for the backend type */
for( i = 0; i < nBackendInfo; i++ ) {
if( strcasecmp(backendInfo[i].bi_type, type) == 0 ) {
return &backendInfo[i];
}
}
return NULL;
}
BackendDB *
backend_db_init(
const char *type
)
{
Backend *be;
BackendInfo *bi = backend_info(type);
int rc = 0;
if( bi == NULL ) {
fprintf( stderr, "Unrecognized database type (%s)\n", type );
return NULL;
}
backendDB = (BackendDB *) ch_realloc(
(char *) backendDB,
(nBackendDB + 1) * sizeof(Backend) );
memset( &backendDB[nbackends], '\0', sizeof(Backend) );
be = &backends[nbackends++];
be->bd_info = bi;
be->be_def_limit = deflimit;
be->be_dfltaccess = global_default_access;
be->be_restrictops = global_restrictops;
be->be_requires = global_requires;
be->be_ssf_set = global_ssf_set;
/* assign a default depth limit for alias deref */
be->be_max_deref_depth = SLAPD_DEFAULT_MAXDEREFDEPTH;
if(bi->bi_db_init) {
rc = bi->bi_db_init( be );
}
if(rc != 0) {
fprintf( stderr, "database init failed (%s)\n", type );
nbackends--;
return NULL;
}
bi->bi_nDB++;
return( be );
}
void
be_db_close( void )
{
int i;
for ( i = 0; i < nbackends; i++ ) {
if ( backends[i].bd_info->bi_db_close ) {
(*backends[i].bd_info->bi_db_close)( &backends[i] );
}
}
}
Backend *
select_backend(
struct berval * dn,
int manageDSAit,
int noSubs )
{
int i, j;
ber_len_t len, dnlen = dn->bv_len;
Backend *be = NULL;
for ( i = 0; i < nbackends; i++ ) {
for ( j = 0; backends[i].be_nsuffix != NULL &&
backends[i].be_nsuffix[j].bv_val != NULL; j++ )
{
if (( backends[i].be_flags & SLAP_BFLAG_GLUE_SUBORDINATE )
&& noSubs )
{
continue;
}
len = backends[i].be_nsuffix[j].bv_len;
if ( len > dnlen ) {
/* suffix is longer than DN */
continue;
}
/*
* input DN is normalized, so the separator check
* need not look at escaping
*/
if ( len && len < dnlen &&
!DN_SEPARATOR( dn->bv_val[(dnlen-len)-1] ))
{
continue;
}
if ( strcmp( backends[i].be_nsuffix[j].bv_val,
&dn->bv_val[dnlen-len] ) == 0 )
{
if( be == NULL ) {
be = &backends[i];
if( manageDSAit && len == dnlen ) {
continue;
}
} else {
be = &backends[i];
}
return be;
}
}
}
return be;
}
int
be_issuffix(
Backend *be,
struct berval *bvsuffix
)
{
int i;
for ( i = 0; be->be_nsuffix != NULL && be->be_nsuffix[i].bv_val != NULL; i++ ) {
if ( ber_bvcmp( &be->be_nsuffix[i], bvsuffix ) == 0 ) {
return( 1 );
}
}
return( 0 );
}
int
be_isroot( Backend *be, struct berval *ndn )
{
if ( !ndn->bv_len ) {
return( 0 );
}
if ( !be->be_rootndn.bv_len ) {
return( 0 );
}
return dn_match( &be->be_rootndn, ndn );
}
int
be_isupdate( Backend *be, struct berval *ndn )
{
if ( !ndn->bv_len ) {
return( 0 );
}
if ( !be->be_update_ndn.bv_len ) {
return( 0 );
}
return dn_match( &be->be_update_ndn, ndn );
}
struct berval *
be_root_dn( Backend *be )
{
return &be->be_rootdn;
}
int
be_isroot_pw( Backend *be,
Connection *conn,
struct berval *ndn,
struct berval *cred )
{
int result;
if ( ! be_isroot( be, ndn ) ) {
return 0;
}
if( be->be_rootpw.bv_len == 0 ) {
return 0;
}
#if defined( SLAPD_CRYPT ) || defined( SLAPD_SPASSWD )
ldap_pvt_thread_mutex_lock( &passwd_mutex );
#ifdef SLAPD_SPASSWD
lutil_passwd_sasl_conn = conn->c_sasl_context;
#endif
#endif
result = lutil_passwd( &be->be_rootpw, cred, NULL );
#if defined( SLAPD_CRYPT ) || defined( SLAPD_SPASSWD )
#ifdef SLAPD_SPASSWD
lutil_passwd_sasl_conn = NULL;
#endif
ldap_pvt_thread_mutex_unlock( &passwd_mutex );
#endif
return result == 0;
}
int
be_entry_release_rw(
BackendDB *be,
Connection *conn,
Operation *op,
Entry *e,
int rw )
{
if ( be->be_release ) {
/* free and release entry from backend */
return be->be_release( be, conn, op, e, rw );
} else {
/* free entry */
entry_free( e );
return 0;
}
}
int
backend_unbind(
Connection *conn,
Operation *op
)
{
int i;
for ( i = 0; i < nbackends; i++ ) {
if ( backends[i].be_unbind ) {
(*backends[i].be_unbind)( &backends[i], conn, op );
}
}
return 0;
}
int
backend_connection_init(
Connection *conn
)
{
int i;
for ( i = 0; i < nbackends; i++ ) {
if ( backends[i].be_connection_init ) {
(*backends[i].be_connection_init)( &backends[i], conn);
}
}
return 0;
}
int
backend_connection_destroy(
Connection *conn
)
{
int i;
for ( i = 0; i < nbackends; i++ ) {
if ( backends[i].be_connection_destroy ) {
(*backends[i].be_connection_destroy)( &backends[i], conn);
}
}
return 0;
}
static int
backend_check_controls(
Backend *be,
Connection *conn,
Operation *op,
const char **text )
{
LDAPControl **ctrls;
ctrls = op->o_ctrls;
if( ctrls == NULL ) {
return LDAP_SUCCESS;
}
if ( be->be_controls == NULL ) {
*text = "control unavailable in context";
return LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
}
for( ; *ctrls != NULL ; ctrls++ ) {
if( (*ctrls)->ldctl_iscritical &&
!ldap_charray_inlist( be->be_controls, (*ctrls)->ldctl_oid ) )
{
*text = "control unavailable in context";
return LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
}
}
return LDAP_SUCCESS;
}
int
backend_check_restrictions(
Backend *be,
Connection *conn,
Operation *op,
struct berval *opdata,
const char **text )
{
int rc;
slap_mask_t restrictops;
slap_mask_t requires;
slap_mask_t opflag;
slap_ssf_set_t *ssf;
int updateop = 0;
int starttls = 0;
int session = 0;
if( be ) {
rc = backend_check_controls( be, conn, op, text );
if( rc != LDAP_SUCCESS ) {
return rc;
}
restrictops = be->be_restrictops;
requires = be->be_requires;
ssf = &be->be_ssf_set;
} else {
restrictops = global_restrictops;
requires = global_requires;
ssf = &global_ssf_set;
}
switch( op->o_tag ) {
case LDAP_REQ_ADD:
opflag = SLAP_RESTRICT_OP_ADD;
updateop++;
break;
case LDAP_REQ_BIND:
opflag = SLAP_RESTRICT_OP_BIND;
session++;
break;
case LDAP_REQ_COMPARE:
opflag = SLAP_RESTRICT_OP_COMPARE;
break;
case LDAP_REQ_DELETE:
updateop++;
opflag = SLAP_RESTRICT_OP_DELETE;
break;
case LDAP_REQ_EXTENDED:
opflag = SLAP_RESTRICT_OP_EXTENDED;
if( !opdata ) {
/* treat unspecified as a modify */
opflag = SLAP_RESTRICT_OP_MODIFY;
updateop++;
break;
}
{
struct berval bv = BER_BVC( LDAP_EXOP_START_TLS );
if( ber_bvcmp( opdata, &bv ) == 0 ) {
session++;
starttls++;
break;
}
}
{
struct berval bv = BER_BVC( LDAP_EXOP_X_WHO_AM_I );
if( ber_bvcmp( opdata, &bv ) == 0 ) {
break;
}
}
/* treat everything else as a modify */
opflag = SLAP_RESTRICT_OP_MODIFY;
updateop++;
break;
case LDAP_REQ_MODIFY:
updateop++;
opflag = SLAP_RESTRICT_OP_MODIFY;
break;
case LDAP_REQ_RENAME:
updateop++;
opflag = SLAP_RESTRICT_OP_RENAME;
break;
case LDAP_REQ_SEARCH:
opflag = SLAP_RESTRICT_OP_SEARCH;
break;
case LDAP_REQ_UNBIND:
session++;
opflag = 0;
break;
default:
*text = "restrict operations internal error";
return LDAP_OTHER;
}
if ( !starttls ) {
/* these checks don't apply to StartTLS */
if( op->o_transport_ssf < ssf->sss_transport ) {
*text = "transport confidentiality required";
return LDAP_CONFIDENTIALITY_REQUIRED;
}
if( op->o_tls_ssf < ssf->sss_tls ) {
*text = "TLS confidentiality required";
return LDAP_CONFIDENTIALITY_REQUIRED;
}
if( op->o_tag != LDAP_REQ_BIND || opdata == NULL ) {
/* these checks don't apply to SASL bind */
if( op->o_sasl_ssf < ssf->sss_sasl ) {
*text = "SASL confidentiality required";
return LDAP_CONFIDENTIALITY_REQUIRED;
}
if( op->o_ssf < ssf->sss_ssf ) {
*text = "confidentiality required";
return LDAP_CONFIDENTIALITY_REQUIRED;
}
}
if( updateop ) {
if( op->o_transport_ssf < ssf->sss_update_transport ) {
*text = "transport update confidentiality required";
return LDAP_CONFIDENTIALITY_REQUIRED;
}
if( op->o_tls_ssf < ssf->sss_update_tls ) {
*text = "TLS update confidentiality required";
return LDAP_CONFIDENTIALITY_REQUIRED;
}
if( op->o_sasl_ssf < ssf->sss_update_sasl ) {
*text = "SASL update confidentiality required";
return LDAP_CONFIDENTIALITY_REQUIRED;
}
if( op->o_ssf < ssf->sss_update_ssf ) {
*text = "update confidentiality required";
return LDAP_CONFIDENTIALITY_REQUIRED;
}
if( op->o_ndn.bv_len == 0 ) {
*text = "modifications require authentication";
return LDAP_STRONG_AUTH_REQUIRED;
}
}
}
if ( !session ) {
/* these checks don't apply to Bind, StartTLS, or Unbind */
if( requires & SLAP_REQUIRE_STRONG ) {
/* should check mechanism */
if( ( op->o_transport_ssf < ssf->sss_transport
&& op->o_authmech.bv_len == 0 ) || op->o_dn.bv_len == 0 )
{
*text = "strong authentication required";
return LDAP_STRONG_AUTH_REQUIRED;
}
}
if( requires & SLAP_REQUIRE_SASL ) {
if( op->o_authmech.bv_len == 0 || op->o_dn.bv_len == 0 ) {
*text = "SASL authentication required";
return LDAP_STRONG_AUTH_REQUIRED;
}
}
if( requires & SLAP_REQUIRE_AUTHC ) {
if( op->o_dn.bv_len == 0 ) {
*text = "authentication required";
return LDAP_UNWILLING_TO_PERFORM;
}
}
if( requires & SLAP_REQUIRE_BIND ) {
int version;
ldap_pvt_thread_mutex_lock( &conn->c_mutex );
version = conn->c_protocol;
ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
if( !version ) {
/* no bind has occurred */
*text = "BIND required";
return LDAP_OPERATIONS_ERROR;
}
}
if( requires & SLAP_REQUIRE_LDAP_V3 ) {
if( op->o_protocol < LDAP_VERSION3 ) {
/* no bind has occurred */
*text = "operation restricted to LDAPv3 clients";
return LDAP_OPERATIONS_ERROR;
}
}
}
if( restrictops & opflag ) {
if( restrictops == SLAP_RESTRICT_OP_READS ) {
*text = "read operations restricted";
} else {
*text = "operation restricted";
}
return LDAP_UNWILLING_TO_PERFORM;
}
return LDAP_SUCCESS;
}
int backend_check_referrals(
Backend *be,
Connection *conn,
Operation *op,
struct berval *dn,
struct berval *ndn )
{
int rc = LDAP_SUCCESS;
if( be->be_chk_referrals ) {
const char *text;
rc = be->be_chk_referrals( be,
conn, op, dn, ndn, &text );
if( rc != LDAP_SUCCESS && rc != LDAP_REFERRAL ) {
send_ldap_result( conn, op, rc,
NULL, text, NULL, NULL );
}
}
return rc;
}
int
backend_group(
Backend *be,
Connection *conn,
Operation *op,
Entry *target,
struct berval *gr_ndn,
struct berval *op_ndn,
ObjectClass *group_oc,
AttributeDescription *group_at
)
{
GroupAssertion *g;
if ( op->o_abandon ) return SLAPD_ABANDON;
if ( !dn_match( &target->e_nname, gr_ndn ) ) {
/* we won't attempt to send it to a different backend */
be = select_backend( gr_ndn, 0, 0 );
if (be == NULL) {
return LDAP_NO_SUCH_OBJECT;
}
}
ldap_pvt_thread_mutex_lock( &conn->c_mutex );
for (g = conn->c_groups; g; g=g->ga_next) {
if (g->ga_be != be || g->ga_oc != group_oc ||
g->ga_at != group_at || g->ga_len != gr_ndn->bv_len)
continue;
if (strcmp( g->ga_ndn, gr_ndn->bv_val ) == 0)
break;
}
ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
if (g) {
return g->ga_res;
}
if( be->be_group ) {
int res = be->be_group( be, conn, op,
target, gr_ndn, op_ndn,
group_oc, group_at );
if ( op->o_tag != LDAP_REQ_BIND && !op->o_do_not_cache ) {
g = ch_malloc(sizeof(GroupAssertion) + gr_ndn->bv_len);
g->ga_be = be;
g->ga_oc = group_oc;
g->ga_at = group_at;
g->ga_res = res;
g->ga_len = gr_ndn->bv_len;
strcpy(g->ga_ndn, gr_ndn->bv_val);
ldap_pvt_thread_mutex_lock( &conn->c_mutex );
g->ga_next = conn->c_groups;
conn->c_groups = g;
ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
}
return res;
}
return LDAP_UNWILLING_TO_PERFORM;
}
int
backend_attribute(
Backend *be,
Connection *conn,
Operation *op,
Entry *target,
struct berval *edn,
AttributeDescription *entry_at,
BerVarray *vals
)
{
if ( target == NULL || !dn_match( &target->e_nname, edn ) ) {
/* we won't attempt to send it to a different backend */
be = select_backend( edn, 0, 0 );
if (be == NULL) {
return LDAP_NO_SUCH_OBJECT;
}
}
if( be->be_attribute ) {
return be->be_attribute( be, conn, op, target, edn,
entry_at, vals );
}
return LDAP_UNWILLING_TO_PERFORM;
}
Attribute *backend_operational(
Backend *be,
Connection *conn,
Operation *op,
Entry *e,
AttributeName *attrs,
int opattrs )
{
Attribute *a = NULL, **ap = &a;
/*
* If operational attributes (allegedly) are required,
* and the backend supports specific operational attributes,
* add them to the attribute list
*/
#ifdef SLAPD_SCHEMA_DN
if ( opattrs || ( attrs &&
ad_inlist( slap_schema.si_ad_subschemaSubentry, attrs )) ) {
*ap = slap_operational_subschemaSubentry( be );
ap = &(*ap)->a_next;
}
#endif
if ( ( opattrs || attrs ) && be && be->be_operational != NULL ) {
( void )be->be_operational( be, conn, op, e, attrs, opattrs, ap );
}
return a;
}
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