void* asyncmeta_timeout_loop(void *ctx, void *arg)
{
struct re_s* rtask = arg;
a_metainfo_t *mi = rtask->arg;
bm_context_t *bc, *onext;
time_t current_time = slap_get_time();
int i, j;
LDAP_STAILQ_HEAD(BCList, bm_context_t) timeout_list;
LDAP_STAILQ_INIT( &timeout_list );
Debug( asyncmeta_debug, "asyncmeta_timeout_loop[%p] start at [%ld] \n", rtask, current_time );
void *oldctx = slap_sl_mem_create(SLAP_SLAB_SIZE, SLAP_SLAB_STACK, ctx, 0);
for (i=0; i<mi->mi_num_conns; i++) {
a_metaconn_t * mc= &mi->mi_conns[i];
ldap_pvt_thread_mutex_lock( &mc->mc_om_mutex );
for (bc = LDAP_STAILQ_FIRST(&mc->mc_om_list); bc; bc = onext) {
onext = LDAP_STAILQ_NEXT(bc, bc_next);
if (bc->bc_active > 0) {
continue;
}
if (bc->op->o_abandon ) {
/* set our memctx */
bc->op->o_threadctx = ctx;
bc->op->o_tid = ldap_pvt_thread_pool_tid( ctx );
slap_sl_mem_setctx(ctx, bc->op->o_tmpmemctx);
Operation *op = bc->op;
LDAP_STAILQ_REMOVE(&mc->mc_om_list, bc, bm_context_t, bc_next);
mc->pending_ops--;
for (j=0; j<mi->mi_ntargets; j++) {
if (bc->candidates[j].sr_msgid >= 0) {
a_metasingleconn_t *msc = &mc->mc_conns[j];
if ( op->o_tag == LDAP_REQ_SEARCH ) {
msc->msc_active++;
asyncmeta_back_cancel( mc, op,
bc->candidates[ j ].sr_msgid, j );
msc->msc_active--;
}
}
}
asyncmeta_clear_bm_context(bc);
continue;
}
if (bc->bc_invalid) {
LDAP_STAILQ_REMOVE(&mc->mc_om_list, bc, bm_context_t, bc_next);
mc->pending_ops--;
LDAP_STAILQ_INSERT_TAIL( &timeout_list, bc, bc_next);
continue;
}
if (bc->timeout && bc->stoptime < current_time) {
Operation *op = bc->op;
LDAP_STAILQ_REMOVE(&mc->mc_om_list, bc, bm_context_t, bc_next);
mc->pending_ops--;
LDAP_STAILQ_INSERT_TAIL( &timeout_list, bc, bc_next);
for (j=0; j<mi->mi_ntargets; j++) {
if (bc->candidates[j].sr_msgid >= 0) {
a_metasingleconn_t *msc = &mc->mc_conns[j];
asyncmeta_set_msc_time(msc);
if ( op->o_tag == LDAP_REQ_SEARCH ) {
msc->msc_active++;
asyncmeta_back_cancel( mc, op,
bc->candidates[ j ].sr_msgid, j );
msc->msc_active--;
}
}
}
}
}
ldap_pvt_thread_mutex_unlock( &mc->mc_om_mutex );
for (bc = LDAP_STAILQ_FIRST(&timeout_list); bc; bc = onext) {
Operation *op = bc->op;
SlapReply *rs = &bc->rs;
int timeout_err;
const char *timeout_text;
onext = LDAP_STAILQ_NEXT(bc, bc_next);
LDAP_STAILQ_REMOVE(&timeout_list, bc, bm_context_t, bc_next);
/* set our memctx */
bc->op->o_threadctx = ctx;
bc->op->o_tid = ldap_pvt_thread_pool_tid( ctx );
slap_sl_mem_setctx(ctx, bc->op->o_tmpmemctx);
if (bc->searchtime) {
timeout_err = LDAP_TIMELIMIT_EXCEEDED;
} else {
timeout_err = op->o_protocol >= LDAP_VERSION3 ?
LDAP_ADMINLIMIT_EXCEEDED : LDAP_OTHER;
}
if ( bc->bc_invalid ) {
timeout_text = "Operation is invalid - target connection has been reset";
} else {
a_metasingleconn_t *log_msc = &mc->mc_conns[0];
Debug( asyncmeta_debug,
"asyncmeta_timeout_loop:Timeout op %s loop[%p], "
"current_time:%ld, op->o_time:%ld msc: %p, "
"msc->msc_binding_time: %x, msc->msc_flags:%x \n",
bc->op->o_log_prefix, rtask, current_time, bc->op->o_time,
log_msc, (unsigned int)log_msc->msc_binding_time, log_msc->msc_mscflags );
if (bc->searchtime) {
timeout_text = NULL;
} else {
timeout_text = "Operation timed out";
}
for (j=0; j<mi->mi_ntargets; j++) {
if (bc->candidates[j].sr_msgid >= 0) {
a_metatarget_t *mt = mi->mi_targets[j];
if (!META_BACK_TGT_QUARANTINE( mt ) ||
bc->candidates[j].sr_type == REP_RESULT) {
continue;
}
if (mt->mt_isquarantined > LDAP_BACK_FQ_NO) {
timeout_err = LDAP_UNAVAILABLE;
} else {
mt->mt_timeout_ops++;
if ((mi->mi_max_timeout_ops > 0) &&
(mt->mt_timeout_ops > mi->mi_max_timeout_ops)) {
timeout_err = LDAP_UNAVAILABLE;
rs->sr_err = timeout_err;
if (mt->mt_isquarantined == LDAP_BACK_FQ_NO)
asyncmeta_quarantine(op, mi, rs, j);
}
}
}
}
}
rs->sr_err = timeout_err;
rs->sr_text = timeout_text;
if (!bc->op->o_abandon ) {
asyncmeta_send_ldap_result( bc, bc->op, &bc->rs );
}
asyncmeta_clear_bm_context(bc);
}
ldap_pvt_thread_mutex_lock( &mc->mc_om_mutex );
if (mi->mi_idle_timeout) {
for (j=0; j<mi->mi_ntargets; j++) {
a_metasingleconn_t *msc = &mc->mc_conns[j];
if ( msc->msc_active > 0 ) {
continue;
}
if (mc->pending_ops > 0) {
continue;
}
current_time = slap_get_time();
if (msc->msc_ld && msc->msc_time > 0 && msc->msc_time + mi->mi_idle_timeout < current_time) {
asyncmeta_clear_one_msc(NULL, mc, j, 1, __FUNCTION__);
}
}
}
ldap_pvt_thread_mutex_unlock( &mc->mc_om_mutex );
}
slap_sl_mem_setctx(ctx, oldctx);
current_time = slap_get_time();
Debug( asyncmeta_debug, "asyncmeta_timeout_loop[%p] stop at [%ld] \n", rtask, current_time );
ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
if ( ldap_pvt_runqueue_isrunning( &slapd_rq, rtask )) {
ldap_pvt_runqueue_stoptask( &slapd_rq, rtask );
}
rtask->interval.tv_sec = 1;
rtask->interval.tv_usec = 0;
ldap_pvt_runqueue_resched(&slapd_rq, rtask, 0);
ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
return NULL;
}
meta_search_candidate_t
asyncmeta_back_compare_start(Operation *op,
SlapReply *rs,
a_metaconn_t *mc,
bm_context_t *bc,
int candidate)
{
a_dncookie dc;
a_metainfo_t *mi = mc->mc_info;
a_metatarget_t *mt = mi->mi_targets[ candidate ];
struct berval mdn = BER_BVNULL;
struct berval mapped_attr = op->orc_ava->aa_desc->ad_cname;
struct berval mapped_value = op->orc_ava->aa_value;
int rc = 0, nretries = 1;
LDAPControl **ctrls = NULL;
meta_search_candidate_t retcode = META_SEARCH_CANDIDATE;
BerElement *ber = NULL;
a_metasingleconn_t *msc = &mc->mc_conns[ candidate ];
SlapReply *candidates = bc->candidates;
ber_int_t msgid;
dc.target = mt;
dc.conn = op->o_conn;
dc.rs = rs;
dc.ctx = "compareDN";
switch ( asyncmeta_dn_massage( &dc, &op->o_req_dn, &mdn ) ) {
case LDAP_UNWILLING_TO_PERFORM:
rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
retcode = META_SEARCH_ERR;
goto doreturn;
default:
break;
}
/*
* if attr is objectClass, try to remap the value
*/
if ( op->orc_ava->aa_desc == slap_schema.si_ad_objectClass ) {
asyncmeta_map( &mt->mt_rwmap.rwm_oc,
&op->orc_ava->aa_value,
&mapped_value, BACKLDAP_MAP );
if ( BER_BVISNULL( &mapped_value ) || BER_BVISEMPTY( &mapped_value ) ) {
rs->sr_err = LDAP_OTHER;
retcode = META_SEARCH_ERR;
goto done;
}
/*
* else try to remap the attribute
*/
} else {
asyncmeta_map( &mt->mt_rwmap.rwm_at,
&op->orc_ava->aa_desc->ad_cname,
&mapped_attr, BACKLDAP_MAP );
if ( BER_BVISNULL( &mapped_attr ) || BER_BVISEMPTY( &mapped_attr ) ) {
rs->sr_err = LDAP_OTHER;
retcode = META_SEARCH_ERR;
goto done;
}
if ( op->orc_ava->aa_desc->ad_type->sat_syntax == slap_schema.si_syn_distinguishedName )
{
dc.ctx = "compareAttrDN";
switch ( asyncmeta_dn_massage( &dc, &op->orc_ava->aa_value, &mapped_value ) )
{
case LDAP_UNWILLING_TO_PERFORM:
rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
retcode = META_SEARCH_ERR;
goto done;
default:
break;
}
}
}
retry:;
ctrls = op->o_ctrls;
if ( asyncmeta_controls_add( op, rs, mc, candidate, &ctrls ) != LDAP_SUCCESS )
{
candidates[ candidate ].sr_msgid = META_MSGID_IGNORE;
retcode = META_SEARCH_ERR;
goto done;
}
ber = ldap_build_compare_req( msc->msc_ld, mdn.bv_val, mapped_attr.bv_val, &mapped_value,
ctrls, NULL, &msgid);
if (ber) {
candidates[ candidate ].sr_msgid = msgid;
rc = ldap_send_initial_request( msc->msc_ld, LDAP_REQ_COMPARE,
mdn.bv_val, ber, msgid );
if (rc == msgid)
rc = LDAP_SUCCESS;
else
rc = LDAP_SERVER_DOWN;
switch ( rc ) {
case LDAP_SUCCESS:
retcode = META_SEARCH_CANDIDATE;
asyncmeta_set_msc_time(msc);
break;
case LDAP_SERVER_DOWN:
ldap_pvt_thread_mutex_lock( &mc->mc_om_mutex);
asyncmeta_clear_one_msc(NULL, mc, candidate);
ldap_pvt_thread_mutex_unlock( &mc->mc_om_mutex);
if ( nretries && asyncmeta_retry( op, rs, &mc, candidate, LDAP_BACK_DONTSEND ) ) {
nretries = 0;
/* if the identity changed, there might be need to re-authz */
(void)mi->mi_ldap_extra->controls_free( op, rs, &ctrls );
goto retry;
}
default:
candidates[ candidate ].sr_msgid = META_MSGID_IGNORE;
retcode = META_SEARCH_ERR;
}
}
done:
(void)mi->mi_ldap_extra->controls_free( op, rs, &ctrls );
if ( mdn.bv_val != op->o_req_dn.bv_val ) {
free( mdn.bv_val );
}
if ( op->orc_ava->aa_value.bv_val != mapped_value.bv_val ) {
free( mapped_value.bv_val );
}
doreturn:;
Debug( LDAP_DEBUG_TRACE, "%s <<< asyncmeta_back_compare_start[%p]=%d\n", op->o_log_prefix, msc, candidates[candidate].sr_msgid );
return retcode;
}
/* This takes care to clean out the outbound queue in case we have a read error
* sending back responses to the client */
int
asyncmeta_op_read_error(a_metaconn_t *mc, int candidate, int error, void* ctx)
{
bm_context_t *bc, *onext;
int cleanup;
Operation *op;
SlapReply *rs;
SlapReply *candidates;
/* no outstanding ops, nothing to do but log */
Debug( LDAP_DEBUG_TRACE,
"asyncmeta_op_read_error: ldr=%p\n",
mc->mc_conns[candidate].msc_ldr );
ldap_pvt_thread_mutex_lock( &mc->mc_om_mutex );
/*someone may be trying to write */
if (mc->mc_conns[candidate].msc_active <= 1) {
asyncmeta_clear_one_msc(NULL, mc, candidate, 0, __FUNCTION__);
} else {
META_BACK_CONN_INVALID_SET(&mc->mc_conns[candidate]);
}
if (mc->pending_ops <= 0) {
ldap_pvt_thread_mutex_unlock( &mc->mc_om_mutex );
return LDAP_SUCCESS;
}
for (bc = LDAP_STAILQ_FIRST(&mc->mc_om_list); bc; bc = onext) {
onext = LDAP_STAILQ_NEXT(bc, bc_next);
cleanup = 0;
candidates = bc->candidates;
/* was this op affected? */
if ( !META_IS_CANDIDATE( &candidates[ candidate ] ) )
continue;
if (bc->op->o_abandon) {
bc->bc_invalid = 1;
continue;
}
if (bc->bc_active > 0) {
continue;
}
bc->op->o_threadctx = ctx;
bc->op->o_tid = ldap_pvt_thread_pool_tid( ctx );
slap_sl_mem_setctx(ctx, bc->op->o_tmpmemctx);
op = bc->op;
rs = &bc->rs;
switch (op->o_tag) {
case LDAP_REQ_ADD:
case LDAP_REQ_MODIFY:
case LDAP_REQ_MODRDN:
case LDAP_REQ_COMPARE:
case LDAP_REQ_DELETE:
rs->sr_err = LDAP_UNAVAILABLE;
rs->sr_text = "Read error on connection to target";
asyncmeta_send_ldap_result( bc, op, rs );
cleanup = 1;
break;
case LDAP_REQ_SEARCH:
{
a_metainfo_t *mi = mc->mc_info;
rs->sr_err = LDAP_UNAVAILABLE;
rs->sr_text = "Read error on connection to target";
candidates[ candidate ].sr_msgid = META_MSGID_IGNORE;
candidates[ candidate ].sr_type = REP_RESULT;
if ( (META_BACK_ONERR_STOP( mi ) ||
asyncmeta_is_last_result(mc, bc, candidate)) && op->o_conn) {
asyncmeta_send_ldap_result( bc, op, rs );
cleanup = 1;
}
}
break;
default:
break;
}
if (cleanup) {
int j;
a_metainfo_t *mi = mc->mc_info;
for (j=0; j<mi->mi_ntargets; j++) {
if (j != candidate && bc->candidates[j].sr_msgid >= 0
&& mc->mc_conns[j].msc_ld != NULL) {
asyncmeta_back_cancel( mc, op,
bc->candidates[ j ].sr_msgid, j );
}
}
LDAP_STAILQ_REMOVE(&mc->mc_om_list, bc, bm_context_t, bc_next);
mc->pending_ops--;
asyncmeta_clear_bm_context(bc);
}
}
ldap_pvt_thread_mutex_unlock( &mc->mc_om_mutex );
return LDAP_SUCCESS;
}
meta_search_candidate_t
asyncmeta_back_add_start(Operation *op,
SlapReply *rs,
a_metaconn_t *mc,
bm_context_t *bc,
int candidate)
{
int isupdate;
Attribute *a;
int i;
LDAPMod **attrs;
struct berval mapped;
a_dncookie dc;
a_metainfo_t *mi = mc->mc_info;
a_metatarget_t *mt = mi->mi_targets[ candidate ];
struct berval mdn;
meta_search_candidate_t retcode = META_SEARCH_CANDIDATE;
BerElement *ber = NULL;
a_metasingleconn_t *msc = &mc->mc_conns[ candidate ];
SlapReply *candidates = bc->candidates;
ber_int_t msgid;
LDAPControl **ctrls = NULL;
int rc, nretries = 1;
dc.target = mt;
dc.conn = op->o_conn;
dc.rs = rs;
dc.ctx = "addDN";
mdn.bv_len = 0;
switch (asyncmeta_dn_massage( &dc, &bc->op->o_req_dn, &mdn ) )
{
case LDAP_SUCCESS:
break;
case LDAP_UNWILLING_TO_PERFORM:
rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
rs->sr_text = "Operation not allowed";
retcode = META_SEARCH_ERR;
goto doreturn;
default:
rs->sr_err = LDAP_NO_SUCH_OBJECT;
retcode = META_SEARCH_NOT_CANDIDATE;
goto doreturn;
}
/* Count number of attributes in entry ( +1 ) */
for ( i = 1, a = op->ora_e->e_attrs; a; i++, a = a->a_next );
/* Create array of LDAPMods for ldap_add() */
attrs = ch_malloc( sizeof( LDAPMod * )*i );
dc.ctx = "addAttrDN";
isupdate = be_shadow_update( op );
for ( i = 0, a = op->ora_e->e_attrs; a; a = a->a_next ) {
int j, is_oc = 0;
if ( !isupdate && !get_relax( op ) && a->a_desc->ad_type->sat_no_user_mod )
{
continue;
}
if ( a->a_desc == slap_schema.si_ad_objectClass
|| a->a_desc == slap_schema.si_ad_structuralObjectClass )
{
is_oc = 1;
mapped = a->a_desc->ad_cname;
} else {
asyncmeta_map( &mt->mt_rwmap.rwm_at,
&a->a_desc->ad_cname, &mapped, BACKLDAP_MAP );
if ( BER_BVISNULL( &mapped ) || BER_BVISEMPTY( &mapped ) ) {
continue;
}
}
attrs[ i ] = ch_malloc( sizeof( LDAPMod ) );
if ( attrs[ i ] == NULL ) {
continue;
}
attrs[ i ]->mod_op = LDAP_MOD_BVALUES;
attrs[ i ]->mod_type = mapped.bv_val;
if ( is_oc ) {
for ( j = 0; !BER_BVISNULL( &a->a_vals[ j ] ); j++ );
attrs[ i ]->mod_bvalues =
(struct berval **)ch_malloc( ( j + 1 ) *
sizeof( struct berval * ) );
for ( j = 0; !BER_BVISNULL( &a->a_vals[ j ] ); ) {
struct ldapmapping *mapping;
asyncmeta_mapping( &mt->mt_rwmap.rwm_oc,
&a->a_vals[ j ], &mapping, BACKLDAP_MAP );
if ( mapping == NULL ) {
if ( mt->mt_rwmap.rwm_oc.drop_missing ) {
continue;
}
attrs[ i ]->mod_bvalues[ j ] = &a->a_vals[ j ];
} else {
attrs[ i ]->mod_bvalues[ j ] = &mapping->dst;
}
j++;
}
attrs[ i ]->mod_bvalues[ j ] = NULL;
} else {
/*
* FIXME: dn-valued attrs should be rewritten
* to allow their use in ACLs at the back-ldap
* level.
*/
if ( a->a_desc->ad_type->sat_syntax ==
slap_schema.si_syn_distinguishedName )
{
(void)asyncmeta_dnattr_rewrite( &dc, a->a_vals );
if ( a->a_vals == NULL ) {
continue;
}
}
for ( j = 0; !BER_BVISNULL( &a->a_vals[ j ] ); j++ )
;
attrs[ i ]->mod_bvalues = ch_malloc( ( j + 1 ) * sizeof( struct berval * ) );
for ( j = 0; !BER_BVISNULL( &a->a_vals[ j ] ); j++ ) {
attrs[ i ]->mod_bvalues[ j ] = &a->a_vals[ j ];
}
attrs[ i ]->mod_bvalues[ j ] = NULL;
}
i++;
}
attrs[ i ] = NULL;
retry:;
ctrls = op->o_ctrls;
if ( asyncmeta_controls_add( op, rs, mc, candidate, &ctrls ) != LDAP_SUCCESS )
{
candidates[ candidate ].sr_msgid = META_MSGID_IGNORE;
retcode = META_SEARCH_ERR;
goto done;
}
ber = ldap_build_add_req( msc->msc_ld, mdn.bv_val, attrs, ctrls, NULL, &msgid);
if (ber) {
candidates[ candidate ].sr_msgid = msgid;
rc = ldap_send_initial_request( msc->msc_ld, LDAP_REQ_ADD,
mdn.bv_val, ber, msgid );
if (rc == msgid)
rc = LDAP_SUCCESS;
else
rc = LDAP_SERVER_DOWN;
switch ( rc ) {
case LDAP_SUCCESS:
retcode = META_SEARCH_CANDIDATE;
asyncmeta_set_msc_time(msc);
break;
case LDAP_SERVER_DOWN:
ldap_pvt_thread_mutex_lock( &mc->mc_om_mutex);
asyncmeta_clear_one_msc(NULL, mc, candidate);
ldap_pvt_thread_mutex_unlock( &mc->mc_om_mutex);
if ( nretries && asyncmeta_retry( op, rs, &mc, candidate, LDAP_BACK_DONTSEND ) ) {
nretries = 0;
/* if the identity changed, there might be need to re-authz */
(void)mi->mi_ldap_extra->controls_free( op, rs, &ctrls );
goto retry;
}
default:
candidates[ candidate ].sr_msgid = META_MSGID_IGNORE;
retcode = META_SEARCH_ERR;
}
}
done:
(void)mi->mi_ldap_extra->controls_free( op, rs, &ctrls );
for ( --i; i >= 0; --i ) {
free( attrs[ i ]->mod_bvalues );
free( attrs[ i ] );
}
free( attrs );
if ( mdn.bv_val != op->ora_e->e_dn ) {
free( mdn.bv_val );
BER_BVZERO( &mdn );
}
doreturn:;
Debug( LDAP_DEBUG_TRACE, "%s <<< asyncmeta_back_add_start[%p]=%d\n", op->o_log_prefix, msc, candidates[candidate].sr_msgid );
return retcode;
}
meta_search_candidate_t
asyncmeta_dobind_init_with_retry(Operation *op, SlapReply *rs, bm_context_t *bc, a_metaconn_t *mc, int candidate)
{
int rc, retries = 1;
a_metasingleconn_t *msc = &mc->mc_conns[candidate];
a_metainfo_t *mi = mc->mc_info;
a_metatarget_t *mt = mi->mi_targets[ candidate ];
SlapReply *candidates = bc->candidates;
retry_dobind:
rc = asyncmeta_dobind_init(op, rs, bc, mc, candidate);
if (rs->sr_err != LDAP_UNAVAILABLE) {
return rc;
} else if (retries <= 0) {
ldap_pvt_thread_mutex_lock( &mc->mc_om_mutex );
if (mc->mc_active < 1) {
asyncmeta_clear_one_msc(NULL, mc, candidate);
}
ldap_pvt_thread_mutex_unlock( &mc->mc_om_mutex );
return rc;
}
/* need to retry */
retries--;
if ( LogTest( LDAP_DEBUG_ANY ) ) {
char buf[ SLAP_TEXT_BUFLEN ];
/* this lock is required; however,
* it's invoked only when logging is on */
ldap_pvt_thread_mutex_lock( &mt->mt_uri_mutex );
snprintf( buf, sizeof( buf ),
"retrying URI=\"%s\" DN=\"%s\"",
mt->mt_uri,
BER_BVISNULL( &msc->msc_bound_ndn ) ?
"" : msc->msc_bound_ndn.bv_val );
ldap_pvt_thread_mutex_unlock( &mt->mt_uri_mutex );
Debug( LDAP_DEBUG_ANY,
"%s asyncmeta_search_dobind_init_with_retry[%d]: %s.\n",
op->o_log_prefix, candidate, buf );
}
ldap_pvt_thread_mutex_lock( &mc->mc_om_mutex );
if (mc->mc_active < 1) {
asyncmeta_clear_one_msc(NULL, mc, candidate);
}
ldap_pvt_thread_mutex_unlock( &mc->mc_om_mutex );
( void )rewrite_session_delete( mt->mt_rwmap.rwm_rw, op->o_conn );
rc = asyncmeta_init_one_conn( op, rs, mc, candidate,
LDAP_BACK_CONN_ISPRIV( mc ), LDAP_BACK_DONTSEND, 0 );
if (rs->sr_err != LDAP_SUCCESS) {
ldap_pvt_thread_mutex_lock( &mc->mc_om_mutex );
if (mc->mc_active < 1) {
asyncmeta_clear_one_msc(NULL, mc, candidate);
}
ldap_pvt_thread_mutex_unlock( &mc->mc_om_mutex );
return META_SEARCH_ERR;
}
goto retry_dobind;
return rc;
}
meta_search_candidate_t
asyncmeta_back_modrdn_start(Operation *op,
SlapReply *rs,
a_metaconn_t *mc,
bm_context_t *bc,
int candidate)
{
a_dncookie dc;
a_metainfo_t *mi = mc->mc_info;
a_metatarget_t *mt = mi->mi_targets[ candidate ];
struct berval mdn = BER_BVNULL,
mnewSuperior = BER_BVNULL,
newrdn = BER_BVNULL;
int rc = 0, nretries = 1;
LDAPControl **ctrls = NULL;
meta_search_candidate_t retcode = META_SEARCH_CANDIDATE;
BerElement *ber = NULL;
a_metasingleconn_t *msc = &mc->mc_conns[ candidate ];
SlapReply *candidates = bc->candidates;
ber_int_t msgid;
dc.target = mt;
dc.conn = op->o_conn;
dc.rs = rs;
if ( op->orr_newSup ) {
/*
* NOTE: the newParent, if defined, must be on the
* same target as the entry to be renamed. This check
* has been anticipated in meta_back_getconn()
*/
/*
* FIXME: one possibility is to delete the entry
* from one target and add it to the other;
* unfortunately we'd need write access to both,
* which is nearly impossible; for administration
* needs, the rootdn of the metadirectory could
* be mapped to an administrative account on each
* target (the binddn?); we'll see.
*/
/*
* NOTE: we need to port the identity assertion
* feature from back-ldap
*/
/* needs LDAPv3 */
switch ( mt->mt_version ) {
case LDAP_VERSION3:
break;
case 0:
if ( op->o_protocol == 0 || op->o_protocol == LDAP_VERSION3 ) {
break;
}
/* fall thru */
default:
/* op->o_protocol cannot be anything but LDAPv3,
* otherwise wouldn't be here */
rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
retcode = META_SEARCH_ERR;
goto done;
}
/*
* Rewrite the new superior, if defined and required
*/
dc.ctx = "newSuperiorDN";
if ( asyncmeta_dn_massage( &dc, op->orr_newSup, &mnewSuperior ) ) {
rs->sr_err = LDAP_OTHER;
retcode = META_SEARCH_ERR;
goto done;
}
}
/*
* Rewrite the modrdn dn, if required
*/
dc.ctx = "modrDN";
if ( asyncmeta_dn_massage( &dc, &op->o_req_dn, &mdn ) ) {
rs->sr_err = LDAP_OTHER;
retcode = META_SEARCH_ERR;
goto done;
}
/* NOTE: we need to copy the newRDN in case it was formed
* from a DN by simply changing the length (ITS#5397) */
newrdn = op->orr_newrdn;
if ( newrdn.bv_val[ newrdn.bv_len ] != '\0' ) {
ber_dupbv_x( &newrdn, &op->orr_newrdn, op->o_tmpmemctx );
}
retry:;
ctrls = op->o_ctrls;
if ( asyncmeta_controls_add( op, rs, mc, candidate, &ctrls ) != LDAP_SUCCESS )
{
candidates[ candidate ].sr_msgid = META_MSGID_IGNORE;
retcode = META_SEARCH_ERR;
goto done;
}
ber = ldap_build_moddn_req( msc->msc_ld, mdn.bv_val, newrdn.bv_val,
mnewSuperior.bv_val, op->orr_deleteoldrdn, ctrls, NULL, &msgid);
if (ber) {
candidates[ candidate ].sr_msgid = msgid;
rc = ldap_send_initial_request( msc->msc_ld, LDAP_REQ_MODRDN,
mdn.bv_val, ber, msgid );
if (rc == msgid)
rc = LDAP_SUCCESS;
else
rc = LDAP_SERVER_DOWN;
switch ( rc ) {
case LDAP_SUCCESS:
retcode = META_SEARCH_CANDIDATE;
asyncmeta_set_msc_time(msc);
break;
case LDAP_SERVER_DOWN:
ldap_pvt_thread_mutex_lock( &mc->mc_om_mutex);
asyncmeta_clear_one_msc(NULL, mc, candidate);
ldap_pvt_thread_mutex_unlock( &mc->mc_om_mutex);
if ( nretries && asyncmeta_retry( op, rs, &mc, candidate, LDAP_BACK_DONTSEND ) ) {
nretries = 0;
/* if the identity changed, there might be need to re-authz */
(void)mi->mi_ldap_extra->controls_free( op, rs, &ctrls );
goto retry;
}
default:
candidates[ candidate ].sr_msgid = META_MSGID_IGNORE;
retcode = META_SEARCH_ERR;
}
}
done:
(void)mi->mi_ldap_extra->controls_free( op, rs, &ctrls );
if ( mdn.bv_val != op->o_req_dn.bv_val ) {
free( mdn.bv_val );
BER_BVZERO( &mdn );
}
if ( !BER_BVISNULL( &mnewSuperior )
&& mnewSuperior.bv_val != op->orr_newSup->bv_val )
{
free( mnewSuperior.bv_val );
BER_BVZERO( &mnewSuperior );
}
if ( newrdn.bv_val != op->orr_newrdn.bv_val ) {
op->o_tmpfree( newrdn.bv_val, op->o_tmpmemctx );
}
doreturn:;
Debug( LDAP_DEBUG_TRACE, "%s <<< asyncmeta_back_modrdn_start[%p]=%d\n", op->o_log_prefix, msc, candidates[candidate].sr_msgid );
return retcode;
}
meta_search_candidate_t
asyncmeta_back_search_start(
Operation *op,
SlapReply *rs,
a_metaconn_t *mc,
bm_context_t *bc,
int candidate,
struct berval *prcookie,
ber_int_t prsize )
{
SlapReply *candidates = bc->candidates;
a_metainfo_t *mi = ( a_metainfo_t * )mc->mc_info;
a_metatarget_t *mt = mi->mi_targets[ candidate ];
a_metasingleconn_t *msc = &mc->mc_conns[ candidate ];
a_dncookie dc;
struct berval realbase = op->o_req_dn;
int realscope = op->ors_scope;
struct berval mbase = BER_BVNULL;
struct berval mfilter = BER_BVNULL;
char **mapped_attrs = NULL;
int rc;
meta_search_candidate_t retcode;
int timelimit;
int nretries = 1;
LDAPControl **ctrls = NULL;
BerElement *ber;
ber_int_t msgid;
#ifdef SLAPD_META_CLIENT_PR
LDAPControl **save_ctrls = NULL;
#endif /* SLAPD_META_CLIENT_PR */
/* this should not happen; just in case... */
if ( msc->msc_ld == NULL ) {
Debug( LDAP_DEBUG_ANY,
"%s: asyncmeta_back_search_start candidate=%d ld=NULL%s.\n",
op->o_log_prefix, candidate,
META_BACK_ONERR_STOP( mi ) ? "" : " (ignored)" );
candidates[ candidate ].sr_err = LDAP_OTHER;
if ( META_BACK_ONERR_STOP( mi ) ) {
return META_SEARCH_ERR;
}
candidates[ candidate ].sr_msgid = META_MSGID_IGNORE;
return META_SEARCH_NOT_CANDIDATE;
}
Debug( LDAP_DEBUG_TRACE, "%s >>> asyncmeta_back_search_start[%d]\n", op->o_log_prefix, candidate, 0 );
/*
* modifies the base according to the scope, if required
*/
if ( mt->mt_nsuffix.bv_len > op->o_req_ndn.bv_len ) {
switch ( op->ors_scope ) {
case LDAP_SCOPE_SUBTREE:
/*
* make the target suffix the new base
* FIXME: this is very forgiving, because
* "illegal" searchBases may be turned
* into the suffix of the target; however,
* the requested searchBase already passed
* thru the candidate analyzer...
*/
if ( dnIsSuffix( &mt->mt_nsuffix, &op->o_req_ndn ) ) {
realbase = mt->mt_nsuffix;
if ( mt->mt_scope == LDAP_SCOPE_SUBORDINATE ) {
realscope = LDAP_SCOPE_SUBORDINATE;
}
} else {
/*
* this target is no longer candidate
*/
retcode = META_SEARCH_NOT_CANDIDATE;
goto doreturn;
}
break;
case LDAP_SCOPE_SUBORDINATE:
case LDAP_SCOPE_ONELEVEL:
{
struct berval rdn = mt->mt_nsuffix;
rdn.bv_len -= op->o_req_ndn.bv_len + STRLENOF( "," );
if ( dnIsOneLevelRDN( &rdn )
&& dnIsSuffix( &mt->mt_nsuffix, &op->o_req_ndn ) )
{
/*
* if there is exactly one level,
* make the target suffix the new
* base, and make scope "base"
*/
realbase = mt->mt_nsuffix;
if ( op->ors_scope == LDAP_SCOPE_SUBORDINATE ) {
if ( mt->mt_scope == LDAP_SCOPE_SUBORDINATE ) {
realscope = LDAP_SCOPE_SUBORDINATE;
} else {
realscope = LDAP_SCOPE_SUBTREE;
}
} else {
realscope = LDAP_SCOPE_BASE;
}
break;
} /* else continue with the next case */
}
case LDAP_SCOPE_BASE:
/*
* this target is no longer candidate
*/
retcode = META_SEARCH_NOT_CANDIDATE;
goto doreturn;
}
}
/* check filter expression */
if ( mt->mt_filter ) {
metafilter_t *mf;
for ( mf = mt->mt_filter; mf; mf = mf->mf_next ) {
if ( regexec( &mf->mf_regex, op->ors_filterstr.bv_val, 0, NULL, 0 ) == 0 )
break;
}
/* nothing matched, this target is no longer a candidate */
if ( !mf ) {
retcode = META_SEARCH_NOT_CANDIDATE;
goto doreturn;
}
}
/*
* Rewrite the search base, if required
*/
dc.target = mt;
dc.ctx = "searchBase";
dc.conn = op->o_conn;
dc.rs = rs;
switch ( asyncmeta_dn_massage( &dc, &realbase, &mbase ) ) {
case LDAP_SUCCESS:
break;
case LDAP_UNWILLING_TO_PERFORM:
rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
rs->sr_text = "Operation not allowed";
retcode = META_SEARCH_ERR;
goto doreturn;
default:
/*
* this target is no longer candidate
*/
retcode = META_SEARCH_NOT_CANDIDATE;
goto doreturn;
}
/*
* Maps filter
*/
rc = asyncmeta_filter_map_rewrite( &dc, op->ors_filter,
&mfilter, BACKLDAP_MAP, NULL );
switch ( rc ) {
case LDAP_SUCCESS:
break;
case LDAP_COMPARE_FALSE:
default:
/*
* this target is no longer candidate
*/
retcode = META_SEARCH_NOT_CANDIDATE;
goto done;
}
/*
* Maps required attributes
*/
rc = asyncmeta_map_attrs( op, &mt->mt_rwmap.rwm_at,
op->ors_attrs, BACKLDAP_MAP, &mapped_attrs );
if ( rc != LDAP_SUCCESS ) {
/*
* this target is no longer candidate
*/
retcode = META_SEARCH_NOT_CANDIDATE;
goto done;
}
if ( op->ors_tlimit != SLAP_NO_LIMIT ) {
timelimit = op->ors_tlimit > 0 ? op->ors_tlimit : 1;
} else {
timelimit = -1; /* no limit */
}
#ifdef SLAPD_META_CLIENT_PR
save_ctrls = op->o_ctrls;
{
LDAPControl *pr_c = NULL;
int i = 0, nc = 0;
if ( save_ctrls ) {
for ( ; save_ctrls[i] != NULL; i++ );
nc = i;
pr_c = ldap_control_find( LDAP_CONTROL_PAGEDRESULTS, save_ctrls, NULL );
}
if ( pr_c != NULL ) nc--;
if ( mt->mt_ps > 0 || prcookie != NULL ) nc++;
if ( mt->mt_ps > 0 || prcookie != NULL || pr_c != NULL ) {
int src = 0, dst = 0;
BerElementBuffer berbuf;
BerElement *ber = (BerElement *)&berbuf;
struct berval val = BER_BVNULL;
ber_len_t len;
len = sizeof( LDAPControl * )*( nc + 1 ) + sizeof( LDAPControl );
if ( mt->mt_ps > 0 || prcookie != NULL ) {
struct berval nullcookie = BER_BVNULL;
ber_tag_t tag;
if ( prsize == 0 && mt->mt_ps > 0 ) prsize = mt->mt_ps;
if ( prcookie == NULL ) prcookie = &nullcookie;
ber_init2( ber, NULL, LBER_USE_DER );
tag = ber_printf( ber, "{iO}", prsize, prcookie );
if ( tag == LBER_ERROR ) {
/* error */
(void) ber_free_buf( ber );
goto done_pr;
}
tag = ber_flatten2( ber, &val, 0 );
if ( tag == LBER_ERROR ) {
/* error */
(void) ber_free_buf( ber );
goto done_pr;
}
len += val.bv_len + 1;
}
op->o_ctrls = op->o_tmpalloc( len, op->o_tmpmemctx );
if ( save_ctrls ) {
for ( ; save_ctrls[ src ] != NULL; src++ ) {
if ( save_ctrls[ src ] != pr_c ) {
op->o_ctrls[ dst ] = save_ctrls[ src ];
dst++;
}
}
}
if ( mt->mt_ps > 0 || prcookie != NULL ) {
op->o_ctrls[ dst ] = (LDAPControl *)&op->o_ctrls[ nc + 1 ];
op->o_ctrls[ dst ]->ldctl_oid = LDAP_CONTROL_PAGEDRESULTS;
op->o_ctrls[ dst ]->ldctl_iscritical = 1;
op->o_ctrls[ dst ]->ldctl_value.bv_val = (char *)&op->o_ctrls[ dst ][ 1 ];
AC_MEMCPY( op->o_ctrls[ dst ]->ldctl_value.bv_val, val.bv_val, val.bv_len + 1 );
op->o_ctrls[ dst ]->ldctl_value.bv_len = val.bv_len;
dst++;
(void)ber_free_buf( ber );
}
op->o_ctrls[ dst ] = NULL;
}
done_pr:;
}
#endif /* SLAPD_META_CLIENT_PR */
retry:;
asyncmeta_set_msc_time(msc);
ctrls = op->o_ctrls;
if (nretries == 0)
{
if (rc != LDAP_SUCCESS)
{
rs->sr_err = LDAP_BUSY;
retcode = META_SEARCH_ERR;
candidates[ candidate ].sr_msgid = META_MSGID_IGNORE;
goto done;
}
}
if ( asyncmeta_controls_add( op, rs, mc, candidate, &ctrls )
!= LDAP_SUCCESS )
{
candidates[ candidate ].sr_msgid = META_MSGID_IGNORE;
retcode = META_SEARCH_NOT_CANDIDATE;
goto done;
}
/*
* Starts the search
*/
ber = ldap_build_search_req( msc->msc_ld,
mbase.bv_val, realscope, mfilter.bv_val,
mapped_attrs, op->ors_attrsonly,
ctrls, NULL, timelimit, op->ors_slimit, op->ors_deref,
&msgid );
if (ber) {
candidates[ candidate ].sr_msgid = msgid;
rc = ldap_send_initial_request( msc->msc_ld, LDAP_REQ_SEARCH,
mbase.bv_val, ber, msgid );
if (rc == msgid)
rc = LDAP_SUCCESS;
else
rc = LDAP_SERVER_DOWN;
switch ( rc ) {
case LDAP_SUCCESS:
retcode = META_SEARCH_CANDIDATE;
asyncmeta_set_msc_time(msc);
break;
case LDAP_SERVER_DOWN:
ldap_pvt_thread_mutex_lock( &mc->mc_om_mutex);
if (mc->mc_active < 1) {
asyncmeta_clear_one_msc(NULL, mc, candidate);
}
ldap_pvt_thread_mutex_unlock( &mc->mc_om_mutex);
if ( nretries && asyncmeta_retry( op, rs, &mc, candidate, LDAP_BACK_DONTSEND ) ) {
nretries = 0;
/* if the identity changed, there might be need to re-authz */
(void)mi->mi_ldap_extra->controls_free( op, rs, &ctrls );
goto retry;
}
rs->sr_err = LDAP_UNAVAILABLE;
retcode = META_SEARCH_ERR;
break;
default:
candidates[ candidate ].sr_msgid = META_MSGID_IGNORE;
retcode = META_SEARCH_NOT_CANDIDATE;
}
}
done:;
(void)mi->mi_ldap_extra->controls_free( op, rs, &ctrls );
#ifdef SLAPD_META_CLIENT_PR
if ( save_ctrls != op->o_ctrls ) {
op->o_tmpfree( op->o_ctrls, op->o_tmpmemctx );
op->o_ctrls = save_ctrls;
}
#endif /* SLAPD_META_CLIENT_PR */
if ( mapped_attrs ) {
ber_memfree_x( mapped_attrs, op->o_tmpmemctx );
}
if ( mfilter.bv_val != op->ors_filterstr.bv_val ) {
ber_memfree_x( mfilter.bv_val, NULL );
}
if ( mbase.bv_val != realbase.bv_val ) {
free( mbase.bv_val );
}
doreturn:;
Debug( LDAP_DEBUG_TRACE, "%s <<< asyncmeta_back_search_start[%p]=%d\n", op->o_log_prefix, msc, candidates[candidate].sr_msgid );
return retcode;
}
