static int
asyncmeta_is_last_result(a_metaconn_t *mc, bm_context_t *bc, int candidate)
{
a_metainfo_t *mi = mc->mc_info;
int i;
SlapReply *candidates = bc->candidates;
for ( i = 0; i < mi->mi_ntargets; i++ ) {
if ( !META_IS_CANDIDATE( &candidates[ i ] ) ) {
continue;
}
if (candidates[ i ].sr_msgid != META_MSGID_IGNORE ||
candidates[ i ].sr_type != REP_RESULT) {
return 1;
}
}
return 0;
}
static void
asyncmeta_search_last_result(a_metaconn_t *mc, bm_context_t *bc, int candidate, int sres)
{
a_metainfo_t *mi = mc->mc_info;
Operation *op = bc->op;
SlapReply *rs = &bc->rs;
int i;
SlapReply *candidates = bc->candidates;
char *matched = NULL;
if ( bc->candidate_match > 0 ) {
struct berval pmatched = BER_BVNULL;
/* we use the first one */
for ( i = 0; i < mi->mi_ntargets; i++ ) {
if ( META_IS_CANDIDATE( &candidates[ i ] )
&& candidates[ i ].sr_matched != NULL )
{
struct berval bv, pbv;
int rc;
/* if we got success, and this target
* returned noSuchObject, and its suffix
* is a superior of the searchBase,
* ignore the matchedDN */
if ( sres == LDAP_SUCCESS
&& candidates[ i ].sr_err == LDAP_NO_SUCH_OBJECT
&& op->o_req_ndn.bv_len > mi->mi_targets[ i ]->mt_nsuffix.bv_len )
{
free( (char *)candidates[ i ].sr_matched );
candidates[ i ].sr_matched = NULL;
continue;
}
ber_str2bv( candidates[ i ].sr_matched, 0, 0, &bv );
rc = dnPretty( NULL, &bv, &pbv, op->o_tmpmemctx );
if ( rc == LDAP_SUCCESS ) {
/* NOTE: if they all are superiors
* of the baseDN, the shorter is also
* superior of the longer... */
if ( pbv.bv_len > pmatched.bv_len ) {
if ( !BER_BVISNULL( &pmatched ) ) {
op->o_tmpfree( pmatched.bv_val, op->o_tmpmemctx );
}
pmatched = pbv;
} else {
op->o_tmpfree( pbv.bv_val, op->o_tmpmemctx );
}
}
if ( candidates[ i ].sr_matched != NULL ) {
free( (char *)candidates[ i ].sr_matched );
candidates[ i ].sr_matched = NULL;
}
}
}
if ( !BER_BVISNULL( &pmatched ) ) {
matched = pmatched.bv_val;
}
} else if ( sres == LDAP_NO_SUCH_OBJECT ) {
matched = mi->mi_suffix.bv_val;
}
/*
* In case we returned at least one entry, we return LDAP_SUCCESS
* otherwise, the latter error code we got
*/
if ( sres == LDAP_SUCCESS ) {
if ( rs->sr_v2ref ) {
sres = LDAP_REFERRAL;
}
if ( META_BACK_ONERR_REPORT( mi ) ) {
/*
* Report errors, if any
*
* FIXME: we should handle error codes and return the more
* important/reasonable
*/
for ( i = 0; i < mi->mi_ntargets; i++ ) {
if ( !META_IS_CANDIDATE( &candidates[ i ] ) ) {
continue;
}
if ( candidates[ i ].sr_err != LDAP_SUCCESS
&& candidates[ i ].sr_err != LDAP_NO_SUCH_OBJECT )
{
sres = candidates[ i ].sr_err;
break;
}
}
}
}
Debug( LDAP_DEBUG_TRACE,
"%s asyncmeta_search_last_result(\"%d\"): "
".\n",
op->o_log_prefix, candidate );
rs->sr_err = sres;
rs->sr_matched = ( sres == LDAP_SUCCESS ? NULL : matched );
rs->sr_text = ( sres == LDAP_SUCCESS ? NULL : candidates[candidate].sr_text );
rs->sr_ref = ( sres == LDAP_REFERRAL ? rs->sr_v2ref : NULL );
asyncmeta_send_ldap_result(bc, op, rs);
rs->sr_text = NULL;
rs->sr_matched = NULL;
rs->sr_ref = NULL;
}
/* 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_back_dobind
*/
int
meta_back_dobind(
Operation *op,
SlapReply *rs,
metaconn_t *mc,
ldap_back_send_t sendok )
{
metainfo_t *mi = ( metainfo_t * )op->o_bd->be_private;
int bound = 0,
i,
isroot = 0;
SlapReply *candidates;
if ( be_isroot( op ) ) {
isroot = 1;
}
if ( LogTest( LDAP_DEBUG_TRACE ) ) {
char buf[STRLENOF("4294967295U") + 1] = { 0 };
mi->mi_ldap_extra->connid2str( &mc->mc_base, buf, sizeof(buf) );
Debug( LDAP_DEBUG_TRACE,
"%s meta_back_dobind: conn=%s%s\n",
op->o_log_prefix, buf,
isroot ? " (isroot)" : "" );
}
/*
* all the targets are bound as pseudoroot
*/
if ( mc->mc_authz_target == META_BOUND_ALL ) {
bound = 1;
goto done;
}
candidates = meta_back_candidates_get( op );
for ( i = 0; i < mi->mi_ntargets; i++ ) {
metatarget_t *mt = mi->mi_targets[ i ];
metasingleconn_t *msc = &mc->mc_conns[ i ];
int rc;
/*
* Not a candidate
*/
if ( !META_IS_CANDIDATE( &candidates[ i ] ) ) {
continue;
}
assert( msc->msc_ld != NULL );
/*
* If the target is already bound it is skipped
*/
retry_binding:;
ldap_pvt_thread_mutex_lock( &mi->mi_conninfo.lai_mutex );
if ( LDAP_BACK_CONN_ISBOUND( msc )
|| ( LDAP_BACK_CONN_ISANON( msc )
&& mt->mt_idassert_authmethod == LDAP_AUTH_NONE ) )
{
ldap_pvt_thread_mutex_unlock( &mi->mi_conninfo.lai_mutex );
++bound;
continue;
} else if ( META_BACK_CONN_CREATING( msc ) || LDAP_BACK_CONN_BINDING( msc ) )
{
ldap_pvt_thread_mutex_unlock( &mi->mi_conninfo.lai_mutex );
ldap_pvt_thread_yield();
goto retry_binding;
}
LDAP_BACK_CONN_BINDING_SET( msc );
ldap_pvt_thread_mutex_unlock( &mi->mi_conninfo.lai_mutex );
rc = meta_back_single_dobind( op, rs, &mc, i,
LDAP_BACK_DONTSEND, mt->mt_nretries, 1 );
/*
* NOTE: meta_back_single_dobind() already retries;
* in case of failure, it resets mc...
*/
if ( rc != LDAP_SUCCESS ) {
char buf[ SLAP_TEXT_BUFLEN ];
if ( mc == NULL ) {
/* meta_back_single_dobind() already sent
* response and released connection */
goto send_err;
}
if ( rc == LDAP_UNAVAILABLE ) {
/* FIXME: meta_back_retry() already re-calls
* meta_back_single_dobind() */
if ( meta_back_retry( op, rs, &mc, i, sendok ) ) {
goto retry_ok;
}
if ( mc != NULL ) {
ldap_pvt_thread_mutex_lock( &mi->mi_conninfo.lai_mutex );
LDAP_BACK_CONN_BINDING_CLEAR( msc );
meta_back_release_conn_lock( mi, mc, 0 );
ldap_pvt_thread_mutex_unlock( &mi->mi_conninfo.lai_mutex );
}
return 0;
}
ldap_pvt_thread_mutex_lock( &mi->mi_conninfo.lai_mutex );
LDAP_BACK_CONN_BINDING_CLEAR( msc );
ldap_pvt_thread_mutex_unlock( &mi->mi_conninfo.lai_mutex );
snprintf( buf, sizeof( buf ),
"meta_back_dobind[%d]: (%s) err=%d (%s).",
i, isroot ? op->o_bd->be_rootdn.bv_val : "anonymous",
rc, ldap_err2string( rc ) );
Debug( LDAP_DEBUG_ANY,
"%s %s\n",
op->o_log_prefix, buf );
/*
* null cred bind should always succeed
* as anonymous, so a failure means
* the target is no longer candidate possibly
* due to technical reasons (remote host down?)
* so better clear the handle
*/
/* leave the target candidate, but record the error for later use */
candidates[ i ].sr_err = rc;
if ( META_BACK_ONERR_STOP( mi ) ) {
bound = 0;
goto done;
}
continue;
} /* else */
retry_ok:;
Debug( LDAP_DEBUG_TRACE,
"%s meta_back_dobind[%d]: "
"(%s)\n",
op->o_log_prefix, i,
isroot ? op->o_bd->be_rootdn.bv_val : "anonymous" );
ldap_pvt_thread_mutex_lock( &mi->mi_conninfo.lai_mutex );
LDAP_BACK_CONN_BINDING_CLEAR( msc );
if ( isroot ) {
LDAP_BACK_CONN_ISBOUND_SET( msc );
} else {
LDAP_BACK_CONN_ISANON_SET( msc );
}
ldap_pvt_thread_mutex_unlock( &mi->mi_conninfo.lai_mutex );
++bound;
}
done:;
if ( LogTest( LDAP_DEBUG_TRACE ) ) {
char buf[STRLENOF("4294967295U") + 1] = { 0 };
mi->mi_ldap_extra->connid2str( &mc->mc_base, buf, sizeof(buf) );
Debug( LDAP_DEBUG_TRACE,
"%s meta_back_dobind: conn=%s bound=%d\n",
op->o_log_prefix, buf, bound );
}
if ( bound == 0 ) {
meta_back_release_conn( mi, mc );
send_err:;
if ( sendok & LDAP_BACK_SENDERR ) {
if ( rs->sr_err == LDAP_SUCCESS ) {
rs->sr_err = LDAP_BUSY;
}
send_ldap_result( op, rs );
}
return 0;
}
return ( bound > 0 );
}
int
meta_back_bind( Operation *op, SlapReply *rs )
{
metainfo_t *mi = ( metainfo_t * )op->o_bd->be_private;
metaconn_t *mc = NULL;
int rc = LDAP_OTHER,
i,
gotit = 0,
isroot = 0;
SlapReply *candidates;
rs->sr_err = LDAP_SUCCESS;
Debug( LDAP_DEBUG_ARGS, "%s meta_back_bind: dn=\"%s\".\n",
op->o_log_prefix, op->o_req_dn.bv_val );
/* the test on the bind method should be superfluous */
switch ( be_rootdn_bind( op, rs ) ) {
case LDAP_SUCCESS:
if ( META_BACK_DEFER_ROOTDN_BIND( mi ) ) {
/* frontend will return success */
return rs->sr_err;
}
isroot = 1;
/* fallthru */
case SLAP_CB_CONTINUE:
break;
default:
/* be_rootdn_bind() sent result */
return rs->sr_err;
}
/* we need meta_back_getconn() not send result even on error,
* because we want to intercept the error and make it
* invalidCredentials */
mc = meta_back_getconn( op, rs, NULL, LDAP_BACK_BIND_DONTSEND );
if ( !mc ) {
if ( LogTest( LDAP_DEBUG_ANY ) ) {
char buf[ SLAP_TEXT_BUFLEN ];
snprintf( buf, sizeof( buf ),
"meta_back_bind: no target "
"for dn \"%s\" (%d%s%s).",
op->o_req_dn.bv_val, rs->sr_err,
rs->sr_text ? ". " : "",
rs->sr_text ? rs->sr_text : "" );
Debug( LDAP_DEBUG_ANY,
"%s %s\n",
op->o_log_prefix, buf );
}
/* FIXME: there might be cases where we don't want
* to map the error onto invalidCredentials */
switch ( rs->sr_err ) {
case LDAP_NO_SUCH_OBJECT:
case LDAP_UNWILLING_TO_PERFORM:
rs->sr_err = LDAP_INVALID_CREDENTIALS;
rs->sr_text = NULL;
break;
}
send_ldap_result( op, rs );
return rs->sr_err;
}
candidates = meta_back_candidates_get( op );
/*
* Each target is scanned ...
*/
mc->mc_authz_target = META_BOUND_NONE;
for ( i = 0; i < mi->mi_ntargets; i++ ) {
metatarget_t *mt = mi->mi_targets[ i ];
int lerr;
/*
* Skip non-candidates
*/
if ( !META_IS_CANDIDATE( &candidates[ i ] ) ) {
continue;
}
if ( gotit == 0 ) {
/* set rc to LDAP_SUCCESS only if at least
* one candidate has been tried */
rc = LDAP_SUCCESS;
gotit = 1;
} else if ( !isroot ) {
/*
* A bind operation is expected to have
* ONE CANDIDATE ONLY!
*/
Debug( LDAP_DEBUG_ANY,
"### %s meta_back_bind: more than one"
" candidate selected...\n",
op->o_log_prefix );
}
if ( isroot ) {
if ( mt->mt_idassert_authmethod == LDAP_AUTH_NONE
|| BER_BVISNULL( &mt->mt_idassert_authcDN ) )
{
metasingleconn_t *msc = &mc->mc_conns[ i ];
/* skip the target if no pseudorootdn is provided */
if ( !BER_BVISNULL( &msc->msc_bound_ndn ) ) {
ch_free( msc->msc_bound_ndn.bv_val );
BER_BVZERO( &msc->msc_bound_ndn );
}
if ( !BER_BVISNULL( &msc->msc_cred ) ) {
/* destroy sensitive data */
memset( msc->msc_cred.bv_val, 0,
msc->msc_cred.bv_len );
ch_free( msc->msc_cred.bv_val );
BER_BVZERO( &msc->msc_cred );
}
continue;
}
(void)meta_back_proxy_authz_bind( mc, i, op, rs, LDAP_BACK_DONTSEND, 1 );
lerr = rs->sr_err;
} else {
lerr = meta_back_single_bind( op, rs, mc, i );
}
if ( lerr != LDAP_SUCCESS ) {
rc = rs->sr_err = lerr;
/* FIXME: in some cases (e.g. unavailable)
* do not assume it's not candidate; rather
* mark this as an error to be eventually
* reported to client */
META_CANDIDATE_CLEAR( &candidates[ i ] );
break;
}
}
/* must re-insert if local DN changed as result of bind */
if ( rc == LDAP_SUCCESS ) {
if ( isroot ) {
mc->mc_authz_target = META_BOUND_ALL;
}
if ( !LDAP_BACK_PCONN_ISPRIV( mc )
&& !dn_match( &op->o_req_ndn, &mc->mc_local_ndn ) )
{
int lerr;
/* wait for all other ops to release the connection */
ldap_pvt_thread_mutex_lock( &mi->mi_conninfo.lai_mutex );
assert( mc->mc_refcnt == 1 );
#if META_BACK_PRINT_CONNTREE > 0
meta_back_print_conntree( mi, ">>> meta_back_bind" );
#endif /* META_BACK_PRINT_CONNTREE */
/* delete all cached connections with the current connection */
if ( LDAP_BACK_SINGLECONN( mi ) ) {
metaconn_t *tmpmc;
while ( ( tmpmc = avl_delete( &mi->mi_conninfo.lai_tree, (caddr_t)mc, meta_back_conn_cmp ) ) != NULL )
{
assert( !LDAP_BACK_PCONN_ISPRIV( mc ) );
Debug( LDAP_DEBUG_TRACE,
"=>meta_back_bind: destroying conn %lu (refcnt=%u)\n",
mc->mc_conn->c_connid, mc->mc_refcnt );
if ( tmpmc->mc_refcnt != 0 ) {
/* taint it */
LDAP_BACK_CONN_TAINTED_SET( tmpmc );
} else {
/*
* Needs a test because the handler may be corrupted,
* and calling ldap_unbind on a corrupted header results
* in a segmentation fault
*/
meta_back_conn_free( tmpmc );
}
}
}
ber_bvreplace( &mc->mc_local_ndn, &op->o_req_ndn );
lerr = avl_insert( &mi->mi_conninfo.lai_tree, (caddr_t)mc,
meta_back_conndn_cmp, meta_back_conndn_dup );
#if META_BACK_PRINT_CONNTREE > 0
meta_back_print_conntree( mi, "<<< meta_back_bind" );
#endif /* META_BACK_PRINT_CONNTREE */
if ( lerr == 0 ) {
#if 0
/* NOTE: a connection cannot be privileged
* and be in the avl tree at the same time
*/
if ( isroot ) {
LDAP_BACK_CONN_ISPRIV_SET( mc );
LDAP_BACK_PCONN_SET( mc, op );
}
#endif
LDAP_BACK_CONN_CACHED_SET( mc );
} else {
LDAP_BACK_CONN_CACHED_CLEAR( mc );
}
ldap_pvt_thread_mutex_unlock( &mi->mi_conninfo.lai_mutex );
}
}
if ( mc != NULL ) {
meta_back_release_conn( mi, mc );
}
/*
* rc is LDAP_SUCCESS if at least one bind succeeded,
* err is the last error that occurred during a bind;
* if at least (and at most?) one bind succeeds, fine.
*/
if ( rc != LDAP_SUCCESS ) {
/*
* deal with bind failure ...
*/
/*
* no target was found within the naming context,
* so bind must fail with invalid credentials
*/
if ( rs->sr_err == LDAP_SUCCESS && gotit == 0 ) {
rs->sr_err = LDAP_INVALID_CREDENTIALS;
} else {
rs->sr_err = slap_map_api2result( rs );
}
send_ldap_result( op, rs );
return rs->sr_err;
}
return LDAP_SUCCESS;
}
int
asyncmeta_back_bind( Operation *op, SlapReply *rs )
{
a_metainfo_t *mi = ( a_metainfo_t * )op->o_bd->be_private;
a_metaconn_t *mc = NULL;
int rc = LDAP_OTHER,
i,
gotit = 0,
isroot = 0;
SlapReply *candidates;
candidates = op->o_tmpcalloc(mi->mi_ntargets, sizeof(SlapReply),op->o_tmpmemctx);
rs->sr_err = LDAP_SUCCESS;
Debug( LDAP_DEBUG_ARGS, "%s asyncmeta_back_bind: dn=\"%s\".\n",
op->o_log_prefix, op->o_req_dn.bv_val, 0 );
/* the test on the bind method should be superfluous */
switch ( be_rootdn_bind( op, rs ) ) {
case LDAP_SUCCESS:
if ( META_BACK_DEFER_ROOTDN_BIND( mi ) ) {
/* frontend will return success */
return rs->sr_err;
}
isroot = 1;
/* fallthru */
case SLAP_CB_CONTINUE:
break;
default:
/* be_rootdn_bind() sent result */
return rs->sr_err;
}
/* we need asyncmeta_getconn() not send result even on error,
* because we want to intercept the error and make it
* invalidCredentials */
mc = asyncmeta_getconn( op, rs, candidates, NULL, LDAP_BACK_BIND_DONTSEND, 1 );
if ( !mc ) {
if ( LogTest( LDAP_DEBUG_ANY ) ) {
char buf[ SLAP_TEXT_BUFLEN ];
snprintf( buf, sizeof( buf ),
"asyncmeta_back_bind: no target "
"for dn \"%s\" (%d%s%s).",
op->o_req_dn.bv_val, rs->sr_err,
rs->sr_text ? ". " : "",
rs->sr_text ? rs->sr_text : "" );
Debug( LDAP_DEBUG_ANY,
"%s %s\n",
op->o_log_prefix, buf, 0 );
}
/* FIXME: there might be cases where we don't want
* to map the error onto invalidCredentials */
switch ( rs->sr_err ) {
case LDAP_NO_SUCH_OBJECT:
case LDAP_UNWILLING_TO_PERFORM:
rs->sr_err = LDAP_INVALID_CREDENTIALS;
rs->sr_text = NULL;
break;
}
send_ldap_result( op, rs );
return rs->sr_err;
}
/*
* Each target is scanned ...
*/
mc->mc_authz_target = META_BOUND_NONE;
for ( i = 0; i < mi->mi_ntargets; i++ ) {
a_metatarget_t *mt = mi->mi_targets[ i ];
int lerr;
/*
* Skip non-candidates
*/
if ( !META_IS_CANDIDATE( &candidates[ i ] ) ) {
continue;
}
if ( gotit == 0 ) {
/* set rc to LDAP_SUCCESS only if at least
* one candidate has been tried */
rc = LDAP_SUCCESS;
gotit = 1;
} else if ( !isroot ) {
/*
* A bind operation is expected to have
* ONE CANDIDATE ONLY!
*/
Debug( LDAP_DEBUG_ANY,
"### %s asyncmeta_back_bind: more than one"
" candidate selected...\n",
op->o_log_prefix, 0, 0 );
}
if ( isroot ) {
if ( mt->mt_idassert_authmethod == LDAP_AUTH_NONE
|| BER_BVISNULL( &mt->mt_idassert_authcDN ) )
{
a_metasingleconn_t *msc = &mc->mc_conns[ i ];
if ( !BER_BVISNULL( &msc->msc_bound_ndn ) ) {
ch_free( msc->msc_bound_ndn.bv_val );
BER_BVZERO( &msc->msc_bound_ndn );
}
if ( !BER_BVISNULL( &msc->msc_cred ) ) {
/* destroy sensitive data */
memset( msc->msc_cred.bv_val, 0,
msc->msc_cred.bv_len );
ch_free( msc->msc_cred.bv_val );
BER_BVZERO( &msc->msc_cred );
}
continue;
}
(void)asyncmeta_proxy_authz_bind( mc, i, op, rs, LDAP_BACK_DONTSEND, 1 );
lerr = rs->sr_err;
} else {
lerr = asyncmeta_single_bind( op, rs, mc, i );
}
if ( lerr != LDAP_SUCCESS ) {
rc = rs->sr_err = lerr;
/* FIXME: in some cases (e.g. unavailable)
* do not assume it's not candidate; rather
* mark this as an error to be eventually
* reported to client */
META_CANDIDATE_CLEAR( &candidates[ i ] );
break;
}
}
if ( mc != NULL ) {
for ( i = 0; i < mi->mi_ntargets; i++ ) {
a_metasingleconn_t *msc = &mc->mc_conns[ i ];
if ( !BER_BVISNULL( &msc->msc_bound_ndn ) ) {
ch_free( msc->msc_bound_ndn.bv_val );
}
if ( !BER_BVISNULL( &msc->msc_cred ) ) {
/* destroy sensitive data */
memset( msc->msc_cred.bv_val, 0,
msc->msc_cred.bv_len );
ch_free( msc->msc_cred.bv_val );
}
}
asyncmeta_back_conn_free( mc );
}
/*
* rc is LDAP_SUCCESS if at least one bind succeeded,
* err is the last error that occurred during a bind;
* if at least (and at most?) one bind succeeds, fine.
*/
if ( rc != LDAP_SUCCESS ) {
/*
* deal with bind failure ...
*/
/*
* no target was found within the naming context,
* so bind must fail with invalid credentials
*/
if ( rs->sr_err == LDAP_SUCCESS && gotit == 0 ) {
rs->sr_err = LDAP_INVALID_CREDENTIALS;
} else {
rs->sr_err = slap_map_api2result( rs );
}
send_ldap_result( op, rs );
return rs->sr_err;
}
return LDAP_SUCCESS;
}
int
asyncmeta_back_search( Operation *op, SlapReply *rs )
{
a_metainfo_t *mi = ( a_metainfo_t * )op->o_bd->be_private;
struct timeval save_tv = { 0, 0 },
tv;
time_t stoptime = (time_t)(-1),
lastres_time = slap_get_time(),
timeout = 0;
int rc = 0, sres = LDAP_SUCCESS;
char *matched = NULL;
int last = 0, ncandidates = 0,
initial_candidates = 0, candidate_match = 0,
needbind = 0;
ldap_back_send_t sendok = LDAP_BACK_SENDERR;
long i,j;
int is_ok = 0;
void *savepriv;
SlapReply *candidates = NULL;
int do_taint = 0;
bm_context_t *bc;
a_metaconn_t *mc;
slap_callback *cb = op->o_callback;
rs_assert_ready( rs );
rs->sr_flags &= ~REP_ENTRY_MASK; /* paranoia, we can set rs = non-entry */
/*
* controls are set in ldap_back_dobind()
*
* FIXME: in case of values return filter, we might want
* to map attrs and maybe rewrite value
*/
asyncmeta_new_bm_context(op, rs, &bc, mi->mi_ntargets );
if (bc == NULL) {
rs->sr_err = LDAP_OTHER;
send_ldap_result(op, rs);
return rs->sr_err;
}
candidates = bc->candidates;
mc = asyncmeta_getconn( op, rs, candidates, NULL, LDAP_BACK_DONTSEND, 0);
if ( !mc || rs->sr_err != LDAP_SUCCESS) {
op->o_callback = cb;
send_ldap_result(op, rs);
asyncmeta_clear_bm_context(bc);
return rs->sr_err;
}
/*
* Inits searches
*/
for ( i = 0; i < mi->mi_ntargets; i++ ) {
/* reset sr_msgid; it is used in most loops
* to check if that target is still to be considered */
candidates[i].sr_msgid = META_MSGID_UNDEFINED;
/* a target is marked as candidate by asyncmeta_getconn();
* if for any reason (an error, it's over or so) it is
* no longer active, sr_msgid is set to META_MSGID_IGNORE
* but it remains candidate, which means it has been active
* at some point during the operation. This allows to
* use its response code and more to compute the final
* response */
if ( !META_IS_CANDIDATE( &candidates[ i ] ) ) {
continue;
}
candidates[ i ].sr_matched = NULL;
candidates[ i ].sr_text = NULL;
candidates[ i ].sr_ref = NULL;
candidates[ i ].sr_ctrls = NULL;
candidates[ i ].sr_nentries = 0;
candidates[ i ].sr_type = -1;
/* get largest timeout among candidates */
if ( mi->mi_targets[ i ]->mt_timeout[ SLAP_OP_SEARCH ]
&& mi->mi_targets[ i ]->mt_timeout[ SLAP_OP_SEARCH ] > timeout )
{
timeout = mi->mi_targets[ i ]->mt_timeout[ SLAP_OP_SEARCH ];
}
}
bc->timeout = timeout;
bc->stoptime = op->o_time + bc->timeout;
if ( op->ors_tlimit != SLAP_NO_LIMIT ) {
stoptime = op->o_time + op->ors_tlimit;
if (stoptime < bc->stoptime) {
bc->stoptime = stoptime;
bc->searchtime = 1;
bc->timeout = op->ors_tlimit;
}
}
ldap_pvt_thread_mutex_lock( &mc->mc_om_mutex);
rc = asyncmeta_add_message_queue(mc, bc);
ldap_pvt_thread_mutex_unlock( &mc->mc_om_mutex);
if (rc != LDAP_SUCCESS) {
rs->sr_err = LDAP_BUSY;
rs->sr_text = "Maximum pending ops limit exceeded";
asyncmeta_clear_bm_context(bc);
op->o_callback = cb;
send_ldap_result(op, rs);
goto finish;
}
for ( i = 0; i < mi->mi_ntargets; i++ ) {
if ( !META_IS_CANDIDATE( &candidates[ i ] )
|| candidates[ i ].sr_err != LDAP_SUCCESS )
{
continue;
}
rc = asyncmeta_dobind_init_with_retry(op, rs, bc, mc, i);
switch (rc)
{
case META_SEARCH_CANDIDATE:
/* target is already bound, just send the search request */
ncandidates++;
Debug( LDAP_DEBUG_TRACE, "%s asyncmeta_back_search: IS_CANDIDATE "
"cnd=\"%ld\"\n", op->o_log_prefix, i , 0);
rc = asyncmeta_back_search_start( op, rs, mc, bc, i, NULL, 0 );
if (rc == META_SEARCH_ERR) {
META_CANDIDATE_CLEAR(&candidates[i]);
candidates[ i ].sr_msgid = META_MSGID_IGNORE;
if ( META_BACK_ONERR_STOP( mi ) ) {
asyncmeta_handle_onerr_stop(op,rs,mc,bc,i,cb);
goto finish;
}
else {
continue;
}
}
break;
case META_SEARCH_NOT_CANDIDATE:
Debug( LDAP_DEBUG_TRACE, "%s asyncmeta_back_search: NOT_CANDIDATE "
"cnd=\"%ld\"\n", op->o_log_prefix, i , 0);
candidates[ i ].sr_msgid = META_MSGID_IGNORE;
break;
case META_SEARCH_NEED_BIND:
case META_SEARCH_CONNECTING:
Debug( LDAP_DEBUG_TRACE, "%s asyncmeta_back_search: NEED_BIND "
"cnd=\"%ld\" %p\n", op->o_log_prefix, i , &mc->mc_conns[i]);
ncandidates++;
rc = asyncmeta_dobind_init(op, rs, bc, mc, i);
if (rc == META_SEARCH_ERR) {
candidates[ i ].sr_msgid = META_MSGID_IGNORE;
if ( META_BACK_ONERR_STOP( mi ) ) {
asyncmeta_handle_onerr_stop(op,rs,mc,bc,i,cb);
goto finish;
}
else {
continue;
}
}
break;
case META_SEARCH_BINDING:
Debug( LDAP_DEBUG_TRACE, "%s asyncmeta_back_search: BINDING "
"cnd=\"%ld\" %p\n", op->o_log_prefix, i , &mc->mc_conns[i]);
ncandidates++;
/* Todo add the context to the message queue but do not send the request
the receiver must send this when we are done binding */
/* question - how would do receiver know to which targets??? */
break;
case META_SEARCH_ERR:
Debug( LDAP_DEBUG_TRACE, "%s asyncmeta_back_search: SEARCH_ERR "
"cnd=\"%ldd\"\n", op->o_log_prefix, i , 0);
candidates[ i ].sr_msgid = META_MSGID_IGNORE;
candidates[ i ].sr_type = REP_RESULT;
if ( META_BACK_ONERR_STOP( mi ) ) {
asyncmeta_handle_onerr_stop(op,rs,mc,bc,i,cb);
goto finish;
}
else {
continue;
}
break;
default:
assert( 0 );
break;
}
}
initial_candidates = ncandidates;
if ( LogTest( LDAP_DEBUG_TRACE ) ) {
char cnd[ SLAP_TEXT_BUFLEN ];
int c;
for ( c = 0; c < mi->mi_ntargets; c++ ) {
if ( META_IS_CANDIDATE( &candidates[ c ] ) ) {
cnd[ c ] = '*';
} else {
cnd[ c ] = ' ';
}
}
cnd[ c ] = '\0';
Debug( LDAP_DEBUG_TRACE, "%s asyncmeta_back_search: ncandidates=%d "
"cnd=\"%s\"\n", op->o_log_prefix, ncandidates, cnd );
}
if ( initial_candidates == 0 ) {
/* NOTE: here we are not sending any matchedDN;
* this is intended, because if the back-meta
* is serving this search request, but no valid
* candidate could be looked up, it means that
* there is a hole in the mapping of the targets
* and thus no knowledge of any remote superior
* is available */
Debug( LDAP_DEBUG_ANY, "%s asyncmeta_back_search: "
"base=\"%s\" scope=%d: "
"no candidate could be selected\n",
op->o_log_prefix, op->o_req_dn.bv_val,
op->ors_scope );
/* FIXME: we're sending the first error we encounter;
* maybe we should pick the worst... */
rc = LDAP_NO_SUCH_OBJECT;
for ( i = 0; i < mi->mi_ntargets; i++ ) {
if ( META_IS_CANDIDATE( &candidates[ i ] )
&& candidates[ i ].sr_err != LDAP_SUCCESS )
{
rc = candidates[ i ].sr_err;
break;
}
}
rs->sr_err = rc;
ldap_pvt_thread_mutex_lock( &mc->mc_om_mutex);
asyncmeta_drop_bc(mc, bc);
ldap_pvt_thread_mutex_unlock( &mc->mc_om_mutex);
op->o_callback = cb;
send_ldap_result(op, rs);
asyncmeta_clear_bm_context(bc);
goto finish;
}
ldap_pvt_thread_mutex_lock( &mc->mc_om_mutex);
asyncmeta_start_listeners(mc, candidates, bc);
ldap_pvt_thread_mutex_unlock( &mc->mc_om_mutex);
finish:
return rs->sr_err;
}
