#include "portable.h"
#include <stdio.h>
#include <ac/errno.h>
#include <ac/socket.h>
#include <ac/string.h>
#define AVL_INTERNAL
#include "slap.h"
#include "back-ldap.h"
#include <lutil_ldap.h>
#ifndef PRINT_CONNTREE
#define PRINT_CONNTREE 0
#endif
#define LDAP_CONTROL_OBSOLETE_PROXY_AUTHZ "2.16.840.1.113730.3.4.12"
static LDAP_REBIND_PROC ldap_back_default_rebind;
LDAP_REBIND_PROC *ldap_back_rebind_f = ldap_back_default_rebind;
static int
ldap_back_proxy_authz_bind( ldapconn_t *lc, Operation *op, SlapReply *rs, ldap_back_send_t sendok );
static int
ldap_back_prepare_conn( ldapconn_t **lcp, Operation *op, SlapReply *rs, ldap_back_send_t sendok );
static int
ldap_back_conndnlc_cmp( const void *c1, const void *c2 );
int
ldap_back_bind( Operation *op, SlapReply *rs )
{
ldapinfo_t *li = (ldapinfo_t *) op->o_bd->be_private;
ldapconn_t *lc;
int rc = 0;
ber_int_t msgid;
lc = ldap_back_getconn( op, rs, LDAP_BACK_BIND_SERR );
if ( !lc ) {
return rs->sr_err;
}
if ( !BER_BVISNULL( &lc->lc_bound_ndn ) ) {
ch_free( lc->lc_bound_ndn.bv_val );
BER_BVZERO( &lc->lc_bound_ndn );
}
LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
rs->sr_err = ldap_sasl_bind( lc->lc_ld, op->o_req_dn.bv_val,
LDAP_SASL_SIMPLE,
&op->orb_cred, op->o_ctrls, NULL, &msgid );
rc = ldap_back_op_result( lc, op, rs, msgid, 0, LDAP_BACK_SENDERR );
if ( rc == LDAP_SUCCESS ) {
if ( li->li_idassert_flags & LDAP_BACK_AUTH_OVERRIDE ) {
ldap_back_proxy_authz_bind( lc, op, rs, LDAP_BACK_SENDERR );
if ( !LDAP_BACK_CONN_ISBOUND( lc ) ) {
rc = 1;
goto done;
}
}
LDAP_BACK_CONN_ISBOUND_SET( lc );
ber_dupbv( &lc->lc_bound_ndn, &op->o_req_ndn );
if ( LDAP_BACK_SAVECRED( li ) ) {
if ( !BER_BVISNULL( &lc->lc_cred ) ) {
memset( lc->lc_cred.bv_val, 0,
lc->lc_cred.bv_len );
}
ber_bvreplace( &lc->lc_cred, &op->orb_cred );
ldap_set_rebind_proc( lc->lc_ld, ldap_back_rebind_f, lc );
}
}
done:;
assert( lc->lc_binding == 1 );
lc->lc_binding = 0;
if ( !LDAP_BACK_CONN_ISBOUND( lc )
|| ( LDAP_BACK_CONN_ISBOUND( lc )
&& !dn_match( &op->o_req_ndn, &lc->lc_local_ndn ) ) )
{
int lerr = -1;
ldapconn_t *tmplc;
retry_lock:;
ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
if ( lc->lc_refcnt > 1 ) {
ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
ldap_pvt_thread_yield();
goto retry_lock;
}
assert( lc->lc_refcnt == 1 );
tmplc = avl_delete( &li->li_conninfo.lai_tree, (caddr_t)lc,
ldap_back_conndnlc_cmp );
assert( tmplc == NULL || lc == tmplc );
if ( LDAP_BACK_CONN_ISBOUND( lc ) ) {
ber_bvreplace( &lc->lc_local_ndn, &op->o_req_ndn );
lerr = avl_insert( &li->li_conninfo.lai_tree, (caddr_t)lc,
ldap_back_conndn_cmp, ldap_back_conndn_dup );
}
ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
switch ( lerr ) {
case 0:
break;
case -1:
ldap_back_conn_free( lc );
lc = NULL;
}
}
if ( lc != NULL ) {
ldap_back_release_conn( op, rs, lc );
}
return( rc );
}
int
ldap_back_conndn_cmp( const void *c1, const void *c2 )
{
const ldapconn_t *lc1 = (const ldapconn_t *)c1;
const ldapconn_t *lc2 = (const ldapconn_t *)c2;
int rc;
rc = SLAP_PTRCMP( lc1->lc_conn, lc2->lc_conn );
if ( rc == 0 ) {
rc = ber_bvcmp( &lc1->lc_local_ndn, &lc2->lc_local_ndn );
}
return rc;
}
static int
ldap_back_conndnlc_cmp( const void *c1, const void *c2 )
{
const ldapconn_t *lc1 = (const ldapconn_t *)c1;
const ldapconn_t *lc2 = (const ldapconn_t *)c2;
int rc;
rc = SLAP_PTRCMP( lc1->lc_conn, lc2->lc_conn );
if ( rc == 0 ) {
rc = ber_bvcmp( &lc1->lc_local_ndn, &lc2->lc_local_ndn );
if ( rc == 0 ) {
rc = SLAP_PTRCMP( lc1, lc2 );
}
}
return rc;
}
int
ldap_back_conn_cmp( const void *c1, const void *c2 )
{
const ldapconn_t *lc1 = (const ldapconn_t *)c1;
const ldapconn_t *lc2 = (const ldapconn_t *)c2;
return SLAP_PTRCMP( lc1->lc_conn, lc2->lc_conn );
}
int
ldap_back_conndn_dup( void *c1, void *c2 )
{
ldapconn_t *lc1 = (ldapconn_t *)c1;
ldapconn_t *lc2 = (ldapconn_t *)c2;
if ( lc1->lc_conn == lc2->lc_conn &&
dn_match( &lc1->lc_local_ndn, &lc2->lc_local_ndn ) )
{
return -1;
}
return 0;
}
#if PRINT_CONNTREE > 0
static void
ravl_print( Avlnode *root, int depth )
{
int i;
ldapconn_t *lc;
if ( root == 0 ) {
return;
}
ravl_print( root->avl_right, depth+1 );
for ( i = 0; i < depth; i++ ) {
fprintf( stderr, "-" );
}
lc = root->avl_data;
fprintf( stderr, "lc=%p local=\"%s\" conn=%p %s refcnt=%d\n",
(void *)lc, lc->lc_local_ndn.bv_val, (void *)lc->lc_conn,
avl_bf2str( root->avl_bf ), lc->lc_refcnt );
ravl_print( root->avl_left, depth+1 );
}
static void
myprint( Avlnode *root )
{
fprintf( stderr, "========>\n" );
if ( root == 0 ) {
fprintf( stderr, "\tNULL\n" );
} else {
ravl_print( root, 0 );
}
fprintf( stderr, "<========\n" );
}
#endif
int
ldap_back_freeconn( Operation *op, ldapconn_t *lc, int dolock )
{
ldapinfo_t *li = (ldapinfo_t *) op->o_bd->be_private;
ldapconn_t *tmplc;
if ( dolock ) {
ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
}
tmplc = avl_delete( &li->li_conninfo.lai_tree, (caddr_t)lc,
ldap_back_conndnlc_cmp );
assert( LDAP_BACK_CONN_TAINTED( lc ) || tmplc == lc );
if ( lc->lc_refcnt == 0 ) {
ldap_back_conn_free( (void *)lc );
}
if ( dolock ) {
ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
}
return 0;
}
#ifdef HAVE_TLS
static int
ldap_back_start_tls(
LDAP *ld,
int protocol,
int *is_tls,
const char *url,
unsigned flags,
int retries,
const char **text )
{
int rc = LDAP_SUCCESS;
ldapinfo_t dummy;
dummy.li_flags = flags;
if ( ( LDAP_BACK_USE_TLS( &dummy ) || ( *is_tls && LDAP_BACK_PROPAGATE_TLS( &dummy ) ) )
&& !ldap_is_ldaps_url( url ) )
{
#ifdef SLAP_STARTTLS_ASYNCHRONOUS
int msgid;
if ( protocol == 0 ) {
ldap_get_option( ld, LDAP_OPT_PROTOCOL_VERSION,
(void *)&protocol );
}
if ( protocol < LDAP_VERSION3 ) {
protocol = LDAP_VERSION3;
ldap_set_option( ld, LDAP_OPT_PROTOCOL_VERSION,
(const void *)&protocol );
}
rc = ldap_start_tls( ld, NULL, NULL, &msgid );
if ( rc == LDAP_SUCCESS ) {
LDAPMessage *res = NULL;
struct timeval tv;
LDAP_BACK_TV_SET( &tv );
retry:;
rc = ldap_result( ld, msgid, LDAP_MSG_ALL, &tv, &res );
if ( rc < 0 ) {
rc = LDAP_UNAVAILABLE;
} else if ( rc == 0 ) {
if ( retries != LDAP_BACK_RETRY_NEVER ) {
ldap_pvt_thread_yield();
if ( retries > 0 ) {
retries--;
}
LDAP_BACK_TV_SET( &tv );
goto retry;
}
rc = LDAP_UNAVAILABLE;
} else if ( rc == LDAP_RES_EXTENDED ) {
struct berval *data = NULL;
rc = ldap_parse_extended_result( ld, res,
NULL, &data, 0 );
if ( rc == LDAP_SUCCESS ) {
int err;
rc = ldap_parse_result( ld, res, &err,
NULL, NULL, NULL, NULL, 1 );
if ( rc == LDAP_SUCCESS ) {
rc = err;
}
res = NULL;
if ( rc == LDAP_SUCCESS ) {
rc = ldap_install_tls( ld );
} else if ( rc == LDAP_REFERRAL ) {
rc = LDAP_UNWILLING_TO_PERFORM;
*text = "unwilling to chase referral returned by Start TLS exop";
}
if ( data ) {
if ( data->bv_val ) {
ber_memfree( data->bv_val );
}
ber_memfree( data );
}
}
} else {
rc = LDAP_OTHER;
}
if ( res != NULL ) {
ldap_msgfree( res );
}
}
#else
rc = ldap_start_tls_s( ld, NULL, NULL );
#endif
switch ( rc ) {
case LDAP_SUCCESS:
*is_tls = 1;
break;
case LDAP_SERVER_DOWN:
break;
default:
if ( LDAP_BACK_TLS_CRITICAL( &dummy ) ) {
*text = "could not start TLS";
break;
}
*is_tls = 0;
rc = LDAP_SUCCESS;
break;
}
} else {
*is_tls = 0;
}
return rc;
}
#endif
static int
ldap_back_prepare_conn( ldapconn_t **lcp, Operation *op, SlapReply *rs, ldap_back_send_t sendok )
{
ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
int vers = op->o_protocol;
LDAP *ld = NULL;
#ifdef HAVE_TLS
int is_tls = op->o_conn->c_is_tls;
#endif
assert( lcp != NULL );
rs->sr_err = ldap_initialize( &ld, li->li_uri );
if ( rs->sr_err != LDAP_SUCCESS ) {
goto error_return;
}
if ( vers == 0 ) {
vers = LDAP_VERSION3;
}
ldap_set_option( ld, LDAP_OPT_PROTOCOL_VERSION, (const void *)&vers );
ldap_set_option( ld, LDAP_OPT_REFERRALS,
LDAP_BACK_CHASE_REFERRALS( li ) ? LDAP_OPT_ON : LDAP_OPT_OFF );
if ( li->li_network_timeout > 0 ) {
struct timeval tv;
tv.tv_sec = li->li_network_timeout;
tv.tv_usec = 0;
ldap_set_option( ld, LDAP_OPT_NETWORK_TIMEOUT, (const void *)&tv );
}
#ifdef HAVE_TLS
rs->sr_err = ldap_back_start_tls( ld, op->o_protocol, &is_tls,
li->li_uri, li->li_flags, li->li_nretries, &rs->sr_text );
if ( rs->sr_err != LDAP_SUCCESS ) {
ldap_unbind_ext( ld, NULL, NULL );
goto error_return;
}
#endif
if ( *lcp == NULL ) {
*lcp = (ldapconn_t *)ch_calloc( 1, sizeof( ldapconn_t ) );
(*lcp)->lc_flags= li->li_flags;
}
(*lcp)->lc_ld = ld;
(*lcp)->lc_refcnt = 1;
(*lcp)->lc_binding = 1;
#ifdef HAVE_TLS
if ( is_tls ) {
LDAP_BACK_CONN_ISTLS_SET( *lcp );
} else {
LDAP_BACK_CONN_ISTLS_CLEAR( *lcp );
}
#endif
error_return:;
if ( rs->sr_err != LDAP_SUCCESS ) {
rs->sr_err = slap_map_api2result( rs );
if ( sendok & LDAP_BACK_SENDERR ) {
if ( rs->sr_text == NULL ) {
rs->sr_text = "ldap_initialize() failed";
}
send_ldap_result( op, rs );
rs->sr_text = NULL;
}
} else {
if ( li->li_conn_ttl > 0 ) {
(*lcp)->lc_create_time = op->o_time;
}
}
return rs->sr_err;
}
ldapconn_t *
ldap_back_getconn( Operation *op, SlapReply *rs, ldap_back_send_t sendok )
{
ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
ldapconn_t *lc = NULL,
lc_curr = { 0 };
int refcnt = 1, binding = 1;
if ( op->o_do_not_cache || be_isroot( op ) ) {
LDAP_BACK_CONN_ISPRIV_SET( &lc_curr );
lc_curr.lc_local_ndn = op->o_bd->be_rootndn;
lc_curr.lc_conn = LDAP_BACK_PCONN_SET( op );
} else {
lc_curr.lc_local_ndn = op->o_ndn;
if ( op->o_tag == LDAP_REQ_BIND || SLAP_IS_AUTHZ_BACKEND( op ) ) {
lc_curr.lc_conn = op->o_conn;
} else {
lc_curr.lc_conn = LDAP_BACK_PCONN_SET( op );
}
}
if ( !( sendok & LDAP_BACK_BINDING ) ) {
retry_lock:
ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
lc = (ldapconn_t *)avl_find( li->li_conninfo.lai_tree,
(caddr_t)&lc_curr, ldap_back_conndn_cmp );
if ( lc != NULL ) {
if ( LDAP_BACK_CONN_BINDING( lc ) ) {
ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
ldap_pvt_thread_yield();
goto retry_lock;
}
refcnt = ++lc->lc_refcnt;
binding = ++lc->lc_binding;
}
ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
}
if ( lc == NULL ) {
if ( ldap_back_prepare_conn( &lc, op, rs, sendok ) != LDAP_SUCCESS ) {
return NULL;
}
if ( sendok & LDAP_BACK_BINDING ) {
LDAP_BACK_CONN_BINDING_SET( lc );
}
lc->lc_conn = lc_curr.lc_conn;
ber_dupbv( &lc->lc_local_ndn, &lc_curr.lc_local_ndn );
if ( LDAP_BACK_CONN_ISPRIV( &lc_curr ) ) {
ber_dupbv( &lc->lc_cred, &li->li_acl_passwd );
ber_dupbv( &lc->lc_bound_ndn, &li->li_acl_authcDN );
LDAP_BACK_CONN_ISPRIV_SET( lc );
} else {
BER_BVZERO( &lc->lc_cred );
BER_BVZERO( &lc->lc_bound_ndn );
#if 0
if ( !BER_BVISEMPTY( &op->o_ndn )
&& SLAP_IS_AUTHZ_BACKEND( op ) )
{
ber_dupbv( &lc->lc_bound_ndn, &op->o_ndn );
}
#endif
}
#ifdef HAVE_TLS
if ( lc->lc_conn == LDAP_BACK_PCONN_TLS
&& !ldap_tls_inplace( lc->lc_ld ) )
{
ldapconn_t *tmplc;
lc_curr.lc_conn = LDAP_BACK_PCONN;
ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
tmplc = (ldapconn_t *)avl_find( li->li_conninfo.lai_tree,
(caddr_t)&lc_curr, ldap_back_conndn_cmp );
if ( tmplc != NULL ) {
refcnt = ++tmplc->lc_refcnt;
binding = ++tmplc->lc_binding;
ldap_back_conn_free( lc );
lc = tmplc;
}
ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
if ( tmplc != NULL ) {
goto done;
}
}
#endif
LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
assert( lc->lc_refcnt == 1 );
assert( lc->lc_binding == 1 );
rs->sr_err = avl_insert( &li->li_conninfo.lai_tree, (caddr_t)lc,
ldap_back_conndn_cmp, ldap_back_conndn_dup );
#if PRINT_CONNTREE > 0
myprint( li->li_conninfo.lai_tree );
#endif
ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
Debug( LDAP_DEBUG_TRACE,
"=>ldap_back_getconn: conn %p inserted refcnt=%u binding=%u\n",
(void *)lc, refcnt, binding );
switch ( rs->sr_err ) {
case 0:
break;
case -1:
if ( !( sendok & LDAP_BACK_BINDING ) ) {
goto retry_lock;
}
ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
(void *)avl_delete( &li->li_conninfo.lai_tree, (caddr_t)lc,
ldap_back_conndnlc_cmp );
ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
LDAP_BACK_CONN_TAINTED_SET( lc );
break;
default:
ldap_back_conn_free( lc );
rs->sr_err = LDAP_OTHER;
rs->sr_text = "proxy bind collision";
if ( op->o_conn && ( sendok & LDAP_BACK_SENDERR ) ) {
send_ldap_result( op, rs );
rs->sr_text = NULL;
}
return NULL;
}
} else {
char buf[ SLAP_TEXT_BUFLEN ];
int expiring = 0;
if ( ( li->li_idle_timeout != 0 && op->o_time > lc->lc_time + li->li_idle_timeout )
|| ( li->li_conn_ttl != 0 && op->o_time > lc->lc_create_time + li->li_conn_ttl ) )
{
expiring = 1;
ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
(void *)avl_delete( &li->li_conninfo.lai_tree, (caddr_t)lc,
ldap_back_conndnlc_cmp );
ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
LDAP_BACK_CONN_TAINTED_SET( lc );
}
{
snprintf( buf, sizeof( buf ),
"conn %p fetched refcnt=%u binding=%u%s",
(void *)lc, refcnt, binding, expiring ? " expiring" : "" );
Debug( LDAP_DEBUG_TRACE,
"=>ldap_back_getconn: %s.\n", buf, 0, 0 );
}
}
#ifdef HAVE_TLS
done:;
#endif
if ( li->li_idle_timeout && lc ) {
lc->lc_time = op->o_time;
}
return lc;
}
void
ldap_back_release_conn_lock(
Operation *op,
SlapReply *rs,
ldapconn_t *lc,
int dolock )
{
ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
if ( dolock ) {
ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
}
assert( lc->lc_refcnt > 0 );
LDAP_BACK_CONN_BINDING_CLEAR( lc );
lc->lc_refcnt--;
if ( LDAP_BACK_CONN_TAINTED( lc ) ) {
ldap_back_freeconn( op, lc, 0 );
}
if ( dolock ) {
ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
}
}
static int
ldap_back_dobind_int(
ldapconn_t *lc,
Operation *op,
SlapReply *rs,
ldap_back_send_t sendok,
int retries,
int dolock )
{
ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
int rc, binding = 0;
ber_int_t msgid;
assert( retries >= 0 );
retry_lock:;
if ( dolock ) {
ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
}
if ( binding == 0 ) {
rc = LDAP_BACK_CONN_ISBOUND( lc );
if ( rc ) {
lc->lc_binding--;
if ( dolock ) {
ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
}
return rc;
}
if ( LDAP_BACK_CONN_BINDING( lc ) ) {
if ( dolock ) {
ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
}
ldap_pvt_thread_yield();
goto retry_lock;
} else {
LDAP_BACK_CONN_BINDING_SET( lc );
binding = 1;
}
}
if ( lc->lc_refcnt != lc->lc_binding ) {
if ( dolock ) {
ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
}
ldap_pvt_thread_yield();
goto retry_lock;
}
if ( dolock ) {
ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
}
#if 0
while ( lc->lc_refcnt > 1 ) {
ldap_pvt_thread_yield();
rc = LDAP_BACK_CONN_ISBOUND( lc );
if ( rc ) {
return rc;
}
}
if ( dolock ) {
ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
}
LDAP_BACK_CONN_BINDING_SET( lc );
if ( dolock ) {
ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
}
#endif
if ( op->o_conn != NULL &&
!op->o_do_not_cache &&
( BER_BVISNULL( &lc->lc_bound_ndn ) ||
( li->li_idassert_flags & LDAP_BACK_AUTH_OVERRIDE ) ) )
{
(void)ldap_back_proxy_authz_bind( lc, op, rs, sendok );
goto done;
}
#ifdef HAVE_CYRUS_SASL
if ( LDAP_BACK_CONN_ISPRIV( lc )
&& li->li_acl_authmethod == LDAP_AUTH_SASL )
{
void *defaults = NULL;
if ( li->li_acl_secprops != NULL ) {
rc = ldap_set_option( lc->lc_ld,
LDAP_OPT_X_SASL_SECPROPS, li->li_acl_secprops);
if ( rc != LDAP_OPT_SUCCESS ) {
Debug( LDAP_DEBUG_ANY, "Error: ldap_set_option "
"(%s,SECPROPS,\"%s\") failed!\n",
li->li_uri, li->li_acl_secprops, 0 );
goto done;
}
}
defaults = lutil_sasl_defaults( lc->lc_ld,
li->li_acl_sasl_mech.bv_val,
li->li_acl_sasl_realm.bv_val,
li->li_acl_authcID.bv_val,
li->li_acl_passwd.bv_val,
NULL );
rs->sr_err = ldap_sasl_interactive_bind_s( lc->lc_ld,
li->li_acl_authcDN.bv_val,
li->li_acl_sasl_mech.bv_val, NULL, NULL,
LDAP_SASL_QUIET, lutil_sasl_interact,
defaults );
lutil_sasl_freedefs( defaults );
rs->sr_err = slap_map_api2result( rs );
if ( rs->sr_err != LDAP_SUCCESS ) {
LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
send_ldap_result( op, rs );
} else {
LDAP_BACK_CONN_ISBOUND_SET( lc );
}
goto done;
}
#endif
retry:;
rs->sr_err = ldap_sasl_bind( lc->lc_ld,
lc->lc_bound_ndn.bv_val,
LDAP_SASL_SIMPLE, &lc->lc_cred,
NULL, NULL, &msgid );
if ( rs->sr_err == LDAP_SERVER_DOWN ) {
if ( retries != LDAP_BACK_RETRY_NEVER ) {
if ( dolock ) {
ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
}
assert( lc->lc_refcnt > 0 );
if ( lc->lc_refcnt == 1 ) {
ldap_unbind_ext( lc->lc_ld, NULL, NULL );
lc->lc_ld = NULL;
rs->sr_err = ldap_back_prepare_conn( &lc, op, rs, sendok );
if ( rs->sr_err != LDAP_SUCCESS ) {
lc->lc_binding--;
lc->lc_refcnt = 0;
}
}
if ( dolock ) {
ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
}
if ( rs->sr_err == LDAP_SUCCESS ) {
if ( retries > 0 ) {
retries--;
}
goto retry;
}
} else {
if ( dolock ) {
ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
}
lc->lc_binding--;
if ( dolock ) {
ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
}
}
ldap_back_freeconn( op, lc, dolock );
rs->sr_err = slap_map_api2result( rs );
return 0;
}
rc = ldap_back_op_result( lc, op, rs, msgid, 0, sendok );
if ( rc == LDAP_SUCCESS ) {
LDAP_BACK_CONN_ISBOUND_SET( lc );
}
done:;
lc->lc_binding--;
LDAP_BACK_CONN_BINDING_CLEAR( lc );
rc = LDAP_BACK_CONN_ISBOUND( lc );
if ( !rc ) {
ldap_back_release_conn_lock( op, rs, lc, dolock );
}
return rc;
}
int
ldap_back_dobind( ldapconn_t *lc, Operation *op, SlapReply *rs, ldap_back_send_t sendok )
{
ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
return ldap_back_dobind_int( lc, op, rs, sendok, li->li_nretries, 1 );
}
static int
ldap_back_default_rebind( LDAP *ld, LDAP_CONST char *url, ber_tag_t request,
ber_int_t msgid, void *params )
{
ldapconn_t *lc = (ldapconn_t *)params;
#ifdef HAVE_TLS
assert( lc != NULL );
if ( !ldap_tls_inplace( ld ) ) {
int is_tls = LDAP_BACK_CONN_ISTLS( lc ),
rc;
const char *text = NULL;
rc = ldap_back_start_tls( ld, 0, &is_tls, url, lc->lc_flags,
LDAP_BACK_RETRY_DEFAULT, &text );
if ( rc != LDAP_SUCCESS ) {
return rc;
}
}
#endif
return ldap_sasl_bind_s( ld, lc->lc_bound_ndn.bv_val,
LDAP_SASL_SIMPLE, &lc->lc_cred, NULL, NULL, NULL );
}
int
ldap_back_op_result(
ldapconn_t *lc,
Operation *op,
SlapReply *rs,
ber_int_t msgid,
time_t timeout,
ldap_back_send_t sendok )
{
char *match = NULL;
LDAPMessage *res = NULL;
char *text = NULL;
#define ERR_OK(err) ((err) == LDAP_SUCCESS || (err) == LDAP_COMPARE_FALSE || (err) == LDAP_COMPARE_TRUE)
rs->sr_text = NULL;
rs->sr_matched = NULL;
if ( ERR_OK( rs->sr_err ) ) {
int rc;
struct timeval tv;
if ( timeout ) {
tv.tv_sec = timeout;
tv.tv_usec = 0;
} else {
LDAP_BACK_TV_SET( &tv );
}
retry:;
rc = ldap_result( lc->lc_ld, msgid, LDAP_MSG_ALL, &tv, &res );
switch ( rc ) {
case 0:
if ( timeout ) {
(void)ldap_abandon_ext( lc->lc_ld, msgid, NULL, NULL );
rs->sr_err = op->o_protocol >= LDAP_VERSION3 ?
LDAP_ADMINLIMIT_EXCEEDED : LDAP_OPERATIONS_ERROR;
rs->sr_text = "Operation timed out";
break;
}
LDAP_BACK_TV_SET( &tv );
ldap_pvt_thread_yield();
goto retry;
case -1:
ldap_get_option( lc->lc_ld, LDAP_OPT_ERROR_NUMBER,
&rs->sr_err );
break;
default:
rc = ldap_parse_result( lc->lc_ld, res, &rs->sr_err,
&match, &text, NULL, NULL, 1 );
#ifndef LDAP_NULL_IS_NULL
if ( match != NULL && match[ 0 ] == '\0' ) {
ldap_memfree( match );
match = NULL;
}
if ( text != NULL && text[ 0 ] == '\0' ) {
ldap_memfree( text );
text = NULL;
}
#endif
rs->sr_text = text;
if ( rc != LDAP_SUCCESS ) {
rs->sr_err = rc;
}
}
}
if ( !ERR_OK( rs->sr_err ) ) {
rs->sr_err = slap_map_api2result( rs );
if ( op->o_conn && !op->o_do_not_cache && match ) {
rs->sr_matched = match;
}
}
if ( op->o_conn &&
( ( sendok & LDAP_BACK_SENDOK )
|| ( ( sendok & LDAP_BACK_SENDERR ) && rs->sr_err != LDAP_SUCCESS ) ) )
{
send_ldap_result( op, rs );
}
if ( match ) {
if ( rs->sr_matched != match ) {
free( (char *)rs->sr_matched );
}
rs->sr_matched = NULL;
ldap_memfree( match );
}
if ( text ) {
ldap_memfree( text );
}
rs->sr_text = NULL;
return( ERR_OK( rs->sr_err ) ? LDAP_SUCCESS : rs->sr_err );
}
int
ldap_back_retry( ldapconn_t **lcp, Operation *op, SlapReply *rs, ldap_back_send_t sendok )
{
int rc = 0;
ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
assert( lcp != NULL );
assert( *lcp != NULL );
ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
if ( (*lcp)->lc_refcnt == 1 ) {
Debug( LDAP_DEBUG_ANY,
"%s ldap_back_retry: retrying URI=\"%s\" DN=\"%s\"\n",
op->o_log_prefix, li->li_uri,
BER_BVISNULL( &(*lcp)->lc_bound_ndn ) ?
"" : (*lcp)->lc_bound_ndn.bv_val );
ldap_unbind_ext( (*lcp)->lc_ld, NULL, NULL );
(*lcp)->lc_ld = NULL;
LDAP_BACK_CONN_ISBOUND_CLEAR( (*lcp) );
rc = ldap_back_prepare_conn( lcp, op, rs, sendok );
if ( rc != LDAP_SUCCESS ) {
rc = 0;
*lcp = NULL;
} else {
rc = ldap_back_dobind_int( *lcp, op, rs, sendok, 0, 0 );
if ( rc == 0 ) {
*lcp = NULL;
}
}
} else {
Debug( LDAP_DEBUG_TRACE,
"ldap_back_retry: conn %p refcnt=%u unable to retry.\n",
(void *)(*lcp), (*lcp)->lc_refcnt, 0 );
ldap_back_release_conn_lock( op, rs, *lcp, 0 );
*lcp = NULL;
if ( sendok ) {
rs->sr_err = LDAP_UNAVAILABLE;
rs->sr_text = "unable to retry";
send_ldap_result( op, rs );
}
}
ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
return rc;
}
static int
ldap_back_proxy_authz_bind( ldapconn_t *lc, Operation *op, SlapReply *rs, ldap_back_send_t sendok )
{
ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
struct berval binddn = slap_empty_bv;
struct berval bindcred = slap_empty_bv;
struct berval ndn;
int dobind = 0;
int msgid;
int rc;
if ( !BER_BVISNULL( &op->o_conn->c_ndn ) ) {
ndn = op->o_conn->c_ndn;
} else {
ndn = op->o_ndn;
}
switch ( li->li_idassert_mode ) {
case LDAP_BACK_IDASSERT_LEGACY:
if ( !BER_BVISNULL( &ndn ) && !BER_BVISEMPTY( &ndn ) ) {
if ( !BER_BVISNULL( &li->li_idassert_authcDN ) && !BER_BVISEMPTY( &li->li_idassert_authcDN ) )
{
binddn = li->li_idassert_authcDN;
bindcred = li->li_idassert_passwd;
dobind = 1;
}
}
break;
default:
if ( BER_BVISNULL( &ndn ) && li->li_idassert_authz == NULL ) {
if ( li->li_idassert_flags & LDAP_BACK_AUTH_PRESCRIPTIVE ) {
rs->sr_err = LDAP_INAPPROPRIATE_AUTH;
if ( sendok & LDAP_BACK_SENDERR ) {
send_ldap_result( op, rs );
}
LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
} else {
rs->sr_err = LDAP_SUCCESS;
binddn = slap_empty_bv;
bindcred = slap_empty_bv;
break;
}
goto done;
} else if ( li->li_idassert_authz && !be_isroot( op ) ) {
struct berval authcDN;
if ( BER_BVISNULL( &ndn ) ) {
authcDN = slap_empty_bv;
} else {
authcDN = ndn;
}
rs->sr_err = slap_sasl_matches( op, li->li_idassert_authz,
&authcDN, &authcDN );
if ( rs->sr_err != LDAP_SUCCESS ) {
if ( li->li_idassert_flags & LDAP_BACK_AUTH_PRESCRIPTIVE ) {
if ( sendok & LDAP_BACK_SENDERR ) {
send_ldap_result( op, rs );
}
LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
} else {
rs->sr_err = LDAP_SUCCESS;
binddn = slap_empty_bv;
bindcred = slap_empty_bv;
break;
}
goto done;
}
}
binddn = li->li_idassert_authcDN;
bindcred = li->li_idassert_passwd;
dobind = 1;
break;
}
if ( dobind && li->li_idassert_authmethod == LDAP_AUTH_SASL ) {
#ifdef HAVE_CYRUS_SASL
void *defaults = NULL;
struct berval authzID = BER_BVNULL;
int freeauthz = 0;
if ( ( !op->o_do_not_cache || !op->o_is_auth_check ) &&
( li->li_idassert_flags & LDAP_BACK_AUTH_NATIVE_AUTHZ ) )
{
switch ( li->li_idassert_mode ) {
case LDAP_BACK_IDASSERT_OTHERID:
case LDAP_BACK_IDASSERT_OTHERDN:
authzID = li->li_idassert_authzID;
break;
case LDAP_BACK_IDASSERT_ANONYMOUS:
BER_BVSTR( &authzID, "dn:" );
break;
case LDAP_BACK_IDASSERT_SELF:
if ( BER_BVISNULL( &ndn ) ) {
BER_BVSTR( &authzID, "dn:" );
break;
}
authzID.bv_len = STRLENOF( "dn:" ) + ndn.bv_len;
authzID.bv_val = slap_sl_malloc( authzID.bv_len + 1, op->o_tmpmemctx );
AC_MEMCPY( authzID.bv_val, "dn:", STRLENOF( "dn:" ) );
AC_MEMCPY( authzID.bv_val + STRLENOF( "dn:" ),
ndn.bv_val, ndn.bv_len + 1 );
freeauthz = 1;
break;
default:
break;
}
}
if ( li->li_idassert_secprops != NULL ) {
rs->sr_err = ldap_set_option( lc->lc_ld,
LDAP_OPT_X_SASL_SECPROPS,
(void *)li->li_idassert_secprops );
if ( rs->sr_err != LDAP_OPT_SUCCESS ) {
rs->sr_err = LDAP_OTHER;
if ( sendok & LDAP_BACK_SENDERR ) {
send_ldap_result( op, rs );
}
LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
goto done;
}
}
defaults = lutil_sasl_defaults( lc->lc_ld,
li->li_idassert_sasl_mech.bv_val,
li->li_idassert_sasl_realm.bv_val,
li->li_idassert_authcID.bv_val,
li->li_idassert_passwd.bv_val,
authzID.bv_val );
rs->sr_err = ldap_sasl_interactive_bind_s( lc->lc_ld, binddn.bv_val,
li->li_idassert_sasl_mech.bv_val, NULL, NULL,
LDAP_SASL_QUIET, lutil_sasl_interact,
defaults );
rs->sr_err = slap_map_api2result( rs );
if ( rs->sr_err != LDAP_SUCCESS ) {
LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
if ( sendok & LDAP_BACK_SENDERR ) {
send_ldap_result( op, rs );
}
} else {
LDAP_BACK_CONN_ISBOUND_SET( lc );
}
lutil_sasl_freedefs( defaults );
if ( freeauthz ) {
slap_sl_free( authzID.bv_val, op->o_tmpmemctx );
}
goto done;
#endif
}
switch ( li->li_idassert_authmethod ) {
case LDAP_AUTH_NONE:
LDAP_BACK_CONN_ISBOUND_SET( lc );
goto done;
case LDAP_AUTH_SIMPLE:
rs->sr_err = ldap_sasl_bind( lc->lc_ld,
binddn.bv_val, LDAP_SASL_SIMPLE,
&bindcred, NULL, NULL, &msgid );
break;
default:
LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
rs->sr_err = LDAP_AUTH_METHOD_NOT_SUPPORTED;
if ( sendok & LDAP_BACK_SENDERR ) {
send_ldap_result( op, rs );
}
goto done;
}
rc = ldap_back_op_result( lc, op, rs, msgid, 0, sendok );
if ( rc == LDAP_SUCCESS ) {
LDAP_BACK_CONN_ISBOUND_SET( lc );
}
done:;
return LDAP_BACK_CONN_ISBOUND( lc );
}
int
ldap_back_proxy_authz_ctrl(
ldapconn_t *lc,
Operation *op,
SlapReply *rs,
LDAPControl ***pctrls )
{
ldapinfo_t *li = (ldapinfo_t *) op->o_bd->be_private;
LDAPControl **ctrls = NULL;
int i = 0,
mode;
struct berval assertedID,
ndn;
*pctrls = NULL;
rs->sr_err = LDAP_SUCCESS;
if ( ( BER_BVISNULL( &li->li_idassert_authcID ) || BER_BVISEMPTY( &li->li_idassert_authcID ) )
&& ( BER_BVISNULL( &li->li_idassert_authcDN ) || BER_BVISEMPTY( &li->li_idassert_authcDN ) ) )
{
goto done;
}
if ( !op->o_conn || op->o_do_not_cache || be_isroot( op ) ) {
goto done;
}
if ( op->o_tag == LDAP_REQ_BIND ) {
ndn = op->o_req_ndn;
} else if ( !BER_BVISNULL( &op->o_conn->c_ndn ) ) {
ndn = op->o_conn->c_ndn;
} else {
ndn = op->o_ndn;
}
if ( li->li_idassert_mode == LDAP_BACK_IDASSERT_LEGACY ) {
if ( op->o_proxy_authz ) {
#if 0
rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
rs->sr_text = "proxyAuthz not allowed within namingContext";
#endif
goto done;
}
if ( !BER_BVISNULL( &lc->lc_bound_ndn ) ) {
goto done;
}
if ( BER_BVISNULL( &ndn ) ) {
goto done;
}
if ( BER_BVISNULL( &li->li_idassert_authcDN ) ) {
goto done;
}
} else if ( li->li_idassert_authmethod == LDAP_AUTH_SASL ) {
if ( ( li->li_idassert_flags & LDAP_BACK_AUTH_NATIVE_AUTHZ )
)
{
goto done;
}
} else if ( li->li_idassert_authz && !be_isroot( op ) ) {
int rc;
struct berval authcDN;
if ( BER_BVISNULL( &ndn ) ) {
authcDN = slap_empty_bv;
} else {
authcDN = ndn;
}
rc = slap_sasl_matches( op, li->li_idassert_authz,
&authcDN, & authcDN );
if ( rc != LDAP_SUCCESS ) {
if ( li->li_idassert_flags & LDAP_BACK_AUTH_PRESCRIPTIVE )
{
rs->sr_err = rc;
}
goto done;
}
}
if ( op->o_proxy_authz ) {
rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
rs->sr_text = "proxyAuthz not allowed within namingContext";
}
if ( op->o_is_auth_check ) {
mode = LDAP_BACK_IDASSERT_NOASSERT;
} else {
mode = li->li_idassert_mode;
}
switch ( mode ) {
case LDAP_BACK_IDASSERT_SELF:
if ( BER_BVISNULL( &ndn ) ) {
goto done;
}
assertedID = ndn;
break;
case LDAP_BACK_IDASSERT_LEGACY:
if ( BER_BVISNULL( &ndn ) ) {
assertedID = slap_empty_bv;
} else {
assertedID = ndn;
}
break;
case LDAP_BACK_IDASSERT_ANONYMOUS:
assertedID = slap_empty_bv;
break;
case LDAP_BACK_IDASSERT_NOASSERT:
goto done;
case LDAP_BACK_IDASSERT_OTHERID:
case LDAP_BACK_IDASSERT_OTHERDN:
assertedID = li->li_idassert_authzID;
break;
default:
assert( 0 );
}
if ( BER_BVISNULL( &assertedID ) ) {
assertedID = slap_empty_bv;
}
if ( dn_match( &assertedID, &lc->lc_bound_ndn ) ) {
goto done;
}
if ( op->o_ctrls ) {
for ( i = 0; op->o_ctrls[ i ]; i++ )
;
}
ctrls = op->o_tmpalloc( sizeof( LDAPControl * ) * (i + 2) + sizeof( LDAPControl ),
op->o_tmpmemctx );
ctrls[ 0 ] = (LDAPControl *)&ctrls[ i + 2 ];
ctrls[ 0 ]->ldctl_oid = LDAP_CONTROL_PROXY_AUTHZ;
ctrls[ 0 ]->ldctl_iscritical = 1;
switch ( li->li_idassert_mode ) {
case LDAP_BACK_IDASSERT_OTHERID:
case LDAP_BACK_IDASSERT_OTHERDN:
ber_dupbv_x( &ctrls[ 0 ]->ldctl_value, &assertedID, op->o_tmpmemctx );
break;
default:
ctrls[ 0 ]->ldctl_value.bv_len = assertedID.bv_len + STRLENOF( "dn:" );
ctrls[ 0 ]->ldctl_value.bv_val = op->o_tmpalloc( ctrls[ 0 ]->ldctl_value.bv_len + 1,
op->o_tmpmemctx );
AC_MEMCPY( ctrls[ 0 ]->ldctl_value.bv_val, "dn:", STRLENOF( "dn:" ) );
AC_MEMCPY( &ctrls[ 0 ]->ldctl_value.bv_val[ STRLENOF( "dn:" ) ],
assertedID.bv_val, assertedID.bv_len + 1 );
break;
}
if ( op->o_ctrls ) {
for ( i = 0; op->o_ctrls[ i ]; i++ ) {
ctrls[ i + 1 ] = op->o_ctrls[ i ];
}
}
ctrls[ i + 1 ] = NULL;
done:;
if ( ctrls == NULL ) {
ctrls = op->o_ctrls;
}
*pctrls = ctrls;
return rs->sr_err;
}
int
ldap_back_proxy_authz_ctrl_free( Operation *op, LDAPControl ***pctrls )
{
LDAPControl **ctrls = *pctrls;
if ( ctrls && ctrls != op->o_ctrls ) {
assert( ctrls[ 0 ] != NULL );
if ( !BER_BVISNULL( &ctrls[ 0 ]->ldctl_value ) ) {
op->o_tmpfree( ctrls[ 0 ]->ldctl_value.bv_val, op->o_tmpmemctx );
}
op->o_tmpfree( ctrls, op->o_tmpmemctx );
}
*pctrls = NULL;
return 0;
}