#include "../back-ldap/back-ldap.h"
#include "back-meta.h"
-/*
- * Set PRINT_CONNTREE larger than 0 to dump the connection tree (debug only)
- */
-#ifndef PRINT_CONNTREE
-#define PRINT_CONNTREE 0
-#endif /* !PRINT_CONNTREE */
-
/*
* meta_back_conndn_cmp
*
/*
* Debug stuff (got it from libavl)
*/
-#if PRINT_CONNTREE > 0
+#if META_BACK_PRINT_CONNTREE > 0
static void
-ravl_print( Avlnode *root, int depth )
+meta_back_ravl_print( Avlnode *root, int depth )
{
int i;
metaconn_t *mc;
return;
}
- ravl_print( root->avl_right, depth + 1 );
+ meta_back_ravl_print( root->avl_right, depth + 1 );
for ( i = 0; i < depth; i++ ) {
fprintf( stderr, "-" );
}
mc = (metaconn_t *)root->avl_data;
- fprintf( stderr, "mc=%p local=\"%s\" conn=%p %s refcnt=%d\n",
+ fprintf( stderr, "mc=%p local=\"%s\" conn=%p %s refcnt=%d%s\n",
(void *)mc,
mc->mc_local_ndn.bv_val ? mc->mc_local_ndn.bv_val : "",
(void *)mc->mc_conn,
- avl_bf2str( root->avl_bf ), mc->mc_refcnt );
+ avl_bf2str( root->avl_bf ), mc->mc_refcnt,
+ LDAP_BACK_CONN_TAINTED( mc ) ? " tainted" : "" );
- ravl_print( root->avl_left, depth + 1 );
+ meta_back_ravl_print( root->avl_left, depth + 1 );
}
-static void
-myprint( Avlnode *root, char *msg )
+/* NOTE: duplicate from back-ldap/bind.c */
+static char* priv2str[] = {
+ "privileged",
+ "privileged/TLS",
+ "anonymous",
+ "anonymous/TLS",
+ "bind",
+ "bind/TLS",
+ NULL
+};
+
+void
+meta_back_print_conntree( metainfo_t *mi, char *msg )
{
+ int c;
+
fprintf( stderr, "========> %s\n", msg );
- if ( root == 0 ) {
- fprintf( stderr, "\tNULL\n" );
+ for ( c = LDAP_BACK_PCONN_FIRST; c < LDAP_BACK_PCONN_LAST; c++ ) {
+ int i = 0;
+ metaconn_t *mc;
+
+ fprintf( stderr, " %s[%d]\n", priv2str[ c ], mi->mi_conn_priv[ c ].mic_num );
+
+ LDAP_TAILQ_FOREACH( mc, &mi->mi_conn_priv[ c ].mic_priv, mc_q )
+ {
+ fprintf( stderr, " [%d] mc=%p local=\"%s\" conn=%p refcnt=%d flags=0x%08x\n",
+ i,
+ (void *)mc,
+ mc->mc_local_ndn.bv_val ? mc->mc_local_ndn.bv_val : "",
+ (void *)mc->mc_conn, mc->mc_refcnt, mc->msc_mscflags );
+ i++;
+ }
+ }
+
+ if ( mi->mi_conninfo.lai_tree == NULL ) {
+ fprintf( stderr, "\t(empty)\n" );
} else {
- ravl_print( root, 0 );
+ meta_back_ravl_print( mi->mi_conninfo.lai_tree, 0 );
}
fprintf( stderr, "<======== %s\n", msg );
}
-#endif /* PRINT_CONNTREE */
+#endif /* META_BACK_PRINT_CONNTREE */
/*
* End of debug stuff
*/
{
metainfo_t *mi = ( metainfo_t * )op->o_bd->be_private;
metaconn_t *mc;
- int i, ntargets = mi->mi_ntargets;
+ int ntargets = mi->mi_ntargets;
assert( ntargets > 0 );
/* malloc all in one */
mc = ( metaconn_t * )ch_calloc( 1, sizeof( metaconn_t )
- + sizeof( metasingleconn_t ) * ntargets );
+ + sizeof( metasingleconn_t ) * ( ntargets - 1 ) );
if ( mc == NULL ) {
return NULL;
}
- for ( i = 0; i < ntargets; i++ ) {
- mc->mc_conns[ i ].msc_info = mi;
- }
+ mc->mc_info = mi;
mc->mc_authz_target = META_BOUND_NONE;
mc->mc_refcnt = 1;
metaconn_t *mc,
int candidate,
int ispriv,
- ldap_back_send_t sendok )
+ ldap_back_send_t sendok,
+ int dolock )
{
metainfo_t *mi = ( metainfo_t * )op->o_bd->be_private;
metatarget_t *mt = mi->mi_targets[ candidate ];
int version;
dncookie dc;
int isauthz = ( candidate == mc->mc_authz_target );
+ int do_return = 0;
#ifdef HAVE_TLS
int is_ldaps = 0;
#endif /* HAVE_TLS */
}
}
+retry_lock:;
+ if ( dolock ) {
+ ldap_pvt_thread_mutex_lock( &mi->mi_conninfo.lai_mutex );
+ }
+
/*
* Already init'ed
*/
- if ( msc->msc_ld != NULL ) {
- return rs->sr_err = LDAP_SUCCESS;
+ if ( LDAP_BACK_CONN_ISBOUND( msc )
+ || LDAP_BACK_CONN_ISANON( msc ) )
+ {
+ assert( msc->msc_ld != NULL );
+ rs->sr_err = LDAP_SUCCESS;
+ do_return = 1;
+
+ } else if ( META_BACK_CONN_CREATING( msc )
+ || LDAP_BACK_CONN_BINDING( msc ) )
+ {
+ if ( !LDAP_BACK_USE_TEMPORARIES( mi ) ) {
+ if ( dolock ) {
+ ldap_pvt_thread_mutex_unlock( &mi->mi_conninfo.lai_mutex );
+ }
+
+ ldap_pvt_thread_yield();
+ goto retry_lock;
+ }
+
+ /* sounds more appropriate */
+ rs->sr_err = LDAP_BUSY;
+ do_return = 1;
+
+ } else if ( META_BACK_CONN_INITED( msc ) ) {
+ assert( msc->msc_ld != NULL );
+ rs->sr_err = LDAP_SUCCESS;
+ do_return = 1;
+
+ } else {
+ /*
+ * creating...
+ */
+ META_BACK_CONN_CREATING_SET( msc );
}
- msc->msc_mscflags = 0;
+ if ( dolock ) {
+ ldap_pvt_thread_mutex_unlock( &mi->mi_conninfo.lai_mutex );
+ }
+
+ if ( do_return ) {
+ if ( rs->sr_err != LDAP_SUCCESS && op->o_conn && ( sendok & LDAP_BACK_SENDERR ) ) {
+ send_ldap_result( op, rs );
+ }
+
+ return rs->sr_err;
+ }
+
+ assert( msc->msc_ld == NULL );
/*
* Attempts to initialize the connection to the target ds
retry:;
rc = ldap_result( msc->msc_ld, msgid, LDAP_MSG_ALL, &tv, &res );
- if ( rc < 0 ) {
+ switch ( rc ) {
+ case -1:
rs->sr_err = LDAP_OTHER;
+ break;
- } else if ( rc == 0 ) {
+ case 0:
if ( nretries != 0 ) {
if ( nretries > 0 ) {
nretries--;
goto retry;
}
rs->sr_err = LDAP_OTHER;
+ break;
- } else if ( rc == LDAP_RES_EXTENDED ) {
+ default:
+ /* only touch when activity actually took place... */
+ if ( mi->mi_idle_timeout != 0 && msc->msc_time < op->o_time ) {
+ msc->msc_time = op->o_time;
+ }
+ break;
+ }
+
+ if ( rc == LDAP_RES_EXTENDED ) {
struct berval *data = NULL;
+ /* NOTE: right now, data is unused, so don't get it */
rs->sr_err = ldap_parse_extended_result( msc->msc_ld, res,
- NULL, &data, 0 );
+ NULL, NULL /* &data */ , 0 );
if ( rs->sr_err == LDAP_SUCCESS ) {
int err;
ldap_install_tls( msc->msc_ld );
} else if ( rs->sr_err == LDAP_REFERRAL ) {
+ /* FIXME: LDAP_OPERATIONS_ERROR? */
rs->sr_err = LDAP_OTHER;
rs->sr_text = "unwilling to chase referral returned by Start TLS exop";
}
if ( rs->sr_err == LDAP_SERVER_DOWN
|| ( rs->sr_err != LDAP_SUCCESS && LDAP_BACK_TLS_CRITICAL( mi ) ) )
{
- ldap_unbind_ext( msc->msc_ld, NULL, NULL );
- msc->msc_ld = NULL;
+
+#ifdef DEBUG_205
+ Debug( LDAP_DEBUG_ANY, "### %s meta_back_init_one_conn(TLS) ldap_unbind_ext[%d] ld=%p\n",
+ op->o_log_prefix, candidate, (void *)msc->msc_ld );
+#endif /* DEBUG_205 */
+
+ /* need to trash a failed Start TLS */
+ meta_clear_one_candidate( op, mc, candidate );
goto error_return;
}
}
if ( !BER_BVISNULL( &mt->mt_idassert_authcDN ) ) {
ber_bvreplace( &msc->msc_bound_ndn, &mt->mt_idassert_authcDN );
if ( !BER_BVISNULL( &mt->mt_idassert_passwd ) ) {
+ if ( !BER_BVISNULL( &msc->msc_cred ) ) {
+ memset( msc->msc_cred.bv_val, 0,
+ msc->msc_cred.bv_len );
+ }
ber_bvreplace( &msc->msc_cred, &mt->mt_idassert_passwd );
}
ber_bvreplace( &msc->msc_bound_ndn, &slap_empty_bv );
}
- LDAP_BACK_CONN_ISPRIV_SET( msc );
-
} else {
if ( !BER_BVISNULL( &msc->msc_cred ) ) {
memset( msc->msc_cred.bv_val, 0, msc->msc_cred.bv_len );
if ( ldap_back_dn_massage( &dc, &op->o_conn->c_dn,
&msc->msc_bound_ndn ) )
{
- ldap_unbind_ext( msc->msc_ld, NULL, NULL );
- msc->msc_ld = NULL;
+
+#ifdef DEBUG_205
+ Debug( LDAP_DEBUG_ANY, "### %s meta_back_init_one_conn(rewrite) ldap_unbind_ext[%d] ld=%p\n",
+ op->o_log_prefix, candidate, (void *)msc->msc_ld );
+#endif /* DEBUG_205 */
+
+ /* need to trash a connection not fully established */
+ meta_clear_one_candidate( op, mc, candidate );
goto error_return;
}
ber_dupbv( &msc->msc_bound_ndn, &op->o_conn->c_dn );
}
+ assert( !BER_BVISNULL( &msc->msc_bound_ndn ) );
+
} else {
ber_dupbv( &msc->msc_bound_ndn, (struct berval *)&slap_empty_bv );
}
assert( !BER_BVISNULL( &msc->msc_bound_ndn ) );
error_return:;
+ if ( dolock ) {
+ ldap_pvt_thread_mutex_lock( &mi->mi_conninfo.lai_mutex );
+ }
+ META_BACK_CONN_CREATING_CLEAR( msc );
if ( rs->sr_err == LDAP_SUCCESS ) {
/*
* Sets a cookie for the rewrite session
*/
( void )rewrite_session_init( mt->mt_rwmap.rwm_rw, op->o_conn );
+ META_BACK_CONN_INITED_SET( msc );
+ }
+ if ( dolock ) {
+ ldap_pvt_thread_mutex_unlock( &mi->mi_conninfo.lai_mutex );
+ }
- } else {
+ if ( rs->sr_err != LDAP_SUCCESS ) {
rs->sr_err = slap_map_api2result( rs );
if ( sendok & LDAP_BACK_SENDERR ) {
send_ldap_result( op, rs );
metaconn_t *mc = *mcp;
metasingleconn_t *msc = &mc->mc_conns[ candidate ];
int rc = LDAP_UNAVAILABLE,
- binding = LDAP_BACK_CONN_BINDING( msc );
+ binding;
ldap_pvt_thread_mutex_lock( &mi->mi_conninfo.lai_mutex );
+ assert( !META_BACK_CONN_CREATING( msc ) );
+ binding = LDAP_BACK_CONN_BINDING( msc );
+ LDAP_BACK_CONN_BINDING_CLEAR( msc );
+
assert( mc->mc_refcnt > 0 );
if ( mc->mc_refcnt == 1 ) {
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\"",
op->o_log_prefix, candidate, buf );
}
- meta_clear_one_candidate( msc );
+ meta_clear_one_candidate( op, mc, candidate );
LDAP_BACK_CONN_ISBOUND_CLEAR( msc );
( void )rewrite_session_delete( mt->mt_rwmap.rwm_rw, op->o_conn );
/* mc here must be the regular mc, reset and ready for init */
rc = meta_back_init_one_conn( op, rs, mc, candidate,
- LDAP_BACK_CONN_ISPRIV( mc ), sendok );
+ LDAP_BACK_CONN_ISPRIV( mc ), sendok, 0 );
+
+ /* restore the "binding" flag, in case */
if ( binding ) {
LDAP_BACK_CONN_BINDING_SET( msc );
}
"meta_back_single_dobind=%d\n",
op->o_log_prefix, candidate, rc );
if ( rc == LDAP_SUCCESS ) {
- if ( be_isroot( op ) ) {
+ if ( !BER_BVISNULL( &msc->msc_bound_ndn ) &&
+ !BER_BVISEMPTY( &msc->msc_bound_ndn ) )
+ {
LDAP_BACK_CONN_ISBOUND_SET( msc );
+
} else {
LDAP_BACK_CONN_ISANON_SET( msc );
}
+
+ /* when bound, dispose of the "binding" flag */
+ if ( binding ) {
+ LDAP_BACK_CONN_BINDING_CLEAR( msc );
+ }
}
}
+
+ /* don't send twice */
+ sendok &= ~LDAP_BACK_SENDERR;
}
if ( rc != LDAP_SUCCESS ) {
candidates[ candidate ].sr_err = rc;
if ( *mcp != NULL ) {
- if ( binding ) {
- LDAP_BACK_CONN_BINDING_CLEAR( msc );
+ if ( mc->mc_refcnt == 1 ) {
+ if ( binding ) {
+ LDAP_BACK_CONN_BINDING_CLEAR( msc );
+ }
+ (void)meta_clear_one_candidate( op, mc, candidate );
}
+
LDAP_BACK_CONN_TAINTED_SET( mc );
/* only release if mandatory; otherwise
* let the caller do what's best before
if ( META_BACK_ONERR_STOP( mi ) ) {
meta_back_release_conn_lock( op, mc, 0 );
*mcp = NULL;
+
+ } else {
+#if META_BACK_PRINT_CONNTREE > 0
+ meta_back_print_conntree( mi, ">>> meta_back_retry" );
+#endif /* META_BACK_PRINT_CONNTREE */
+
+ /* FIXME: could be done better, reworking meta_back_release_conn_lock() */
+ if ( LDAP_BACK_PCONN_ISPRIV( mc ) ) {
+ if ( mc->mc_q.tqe_prev != NULL ) {
+ assert( LDAP_BACK_CONN_CACHED( mc ) );
+ assert( mi->mi_conn_priv[ LDAP_BACK_CONN2PRIV( mc ) ].mic_num > 0 );
+ LDAP_TAILQ_REMOVE( &mi->mi_conn_priv[ LDAP_BACK_CONN2PRIV( mc ) ].mic_priv,
+ mc, mc_q );
+ mi->mi_conn_priv[ LDAP_BACK_CONN2PRIV( mc ) ].mic_num--;
+ mc->mc_q.tqe_prev = NULL;
+ mc->mc_q.tqe_next = NULL;
+
+ } else {
+ assert( !LDAP_BACK_CONN_CACHED( mc ) );
+ }
+
+ } else {
+ /* FIXME: check if in tree, for consistency? */
+ (void)avl_delete( &mi->mi_conninfo.lai_tree,
+ ( caddr_t )mc, meta_back_conndnmc_cmp );
+ }
+ LDAP_BACK_CONN_CACHED_CLEAR( mc );
+
+#if META_BACK_PRINT_CONNTREE > 0
+ meta_back_print_conntree( mi, "<<< meta_back_retry" );
+#endif /* META_BACK_PRINT_CONNTREE */
}
}
- if ( sendok ) {
+ if ( sendok & LDAP_BACK_SENDERR ) {
rs->sr_err = rc;
rs->sr_text = NULL;
send_ldap_result( op, rs );
META_DNTYPE_ENTRY,
META_DNTYPE_PARENT,
META_DNTYPE_NEWPARENT
- } dn_type = META_DNTYPE_ENTRY;
+ } dn_type = META_DNTYPE_ENTRY;
struct berval ndn = op->o_req_ndn,
pndn;
SlapReply *candidates = meta_back_candidates_get( op );
/* Internal searches are privileged and shared. So is root. */
- /* FIXME: there seem to be concurrency issues */
- if ( op->o_do_not_cache || be_isroot( op ) ) {
+ /* FIXME: there seems to be concurrency issues */
+ if ( META_BACK_PROXYAUTHZ_ALWAYS( mi ) || op->o_do_not_cache || be_isroot( op ) ) {
mc_curr.mc_local_ndn = op->o_bd->be_rootndn;
LDAP_BACK_CONN_ISPRIV_SET( &mc_curr );
- mc_curr.mc_conn = LDAP_BACK_PCONN_SET( op );
+ LDAP_BACK_PCONN_ROOTDN_SET( &mc_curr, op );
} else {
mc_curr.mc_local_ndn = op->o_ndn;
mc_curr.mc_conn = op->o_conn;
} else {
- mc_curr.mc_conn = LDAP_BACK_PCONN_SET( op );
+ LDAP_BACK_CONN_ISANON_SET( &mc_curr );
+ LDAP_BACK_PCONN_ANON_SET( &mc_curr, op );
}
}
/* Searches for a metaconn in the avl tree */
retry_lock:;
ldap_pvt_thread_mutex_lock( &mi->mi_conninfo.lai_mutex );
- mc = (metaconn_t *)avl_find( mi->mi_conninfo.lai_tree,
- (caddr_t)&mc_curr, meta_back_conndn_cmp );
- if ( mc ) {
- if ( ( mi->mi_conn_ttl != 0 && op->o_time > mc->mc_create_time + mi->mi_conn_ttl )
- || ( mi->mi_idle_timeout != 0 && op->o_time > mc->mc_time + mi->mi_idle_timeout ) )
+ if ( LDAP_BACK_PCONN_ISPRIV( &mc_curr ) ) {
+ /* lookup a conn that's not binding */
+ LDAP_TAILQ_FOREACH( mc,
+ &mi->mi_conn_priv[ LDAP_BACK_CONN2PRIV( &mc_curr ) ].mic_priv,
+ mc_q )
{
- /* don't let anyone else use this expired connection */
- (void)avl_delete( &mi->mi_conninfo.lai_tree,
- (caddr_t)mc, meta_back_conndnmc_cmp );
- LDAP_BACK_CONN_TAINTED_SET( mc );
+ if ( !LDAP_BACK_CONN_BINDING( mc ) && mc->mc_refcnt == 0 ) {
+ break;
+ }
+ }
+
+ if ( mc != NULL ) {
+ if ( mc != LDAP_TAILQ_LAST( &mi->mi_conn_priv[ LDAP_BACK_CONN2PRIV( mc ) ].mic_priv,
+ metaconn_t, mc_q ) )
+ {
+ LDAP_TAILQ_REMOVE( &mi->mi_conn_priv[ LDAP_BACK_CONN2PRIV( mc ) ].mic_priv,
+ mc, mc_q );
+ mc->mc_q.tqe_prev = NULL;
+ mc->mc_q.tqe_next = NULL;
+ LDAP_TAILQ_INSERT_TAIL( &mi->mi_conn_priv[ LDAP_BACK_CONN2PRIV( mc ) ].mic_priv,
+ mc, mc_q );
+ }
- Debug( LDAP_DEBUG_TRACE, "%s meta_back_getconn: mc=%p conn=%ld expired.\n",
- op->o_log_prefix, (void *)mc, LDAP_BACK_PCONN_ID( mc->mc_conn ) );
+ } else if ( !LDAP_BACK_USE_TEMPORARIES( mi )
+ && mi->mi_conn_priv[ LDAP_BACK_CONN2PRIV( &mc_curr ) ].mic_num == mi->mi_conn_priv_max )
+ {
+ mc = LDAP_TAILQ_FIRST( &mi->mi_conn_priv[ LDAP_BACK_CONN2PRIV( &mc_curr ) ].mic_priv );
}
+
+
+ } else {
+ mc = (metaconn_t *)avl_find( mi->mi_conninfo.lai_tree,
+ (caddr_t)&mc_curr, meta_back_conndn_cmp );
+ }
+
+ if ( mc ) {
+ /* catch taint errors */
+ assert( !LDAP_BACK_CONN_TAINTED( mc ) );
- /* Don't reuse connections while they're still binding */
+ /* Don't reuse connections while they're still binding
+ * NOTE: only makes sense for binds */
if ( LDAP_BACK_CONN_BINDING( mc ) ) {
- ldap_pvt_thread_mutex_unlock( &mi->mi_conninfo.lai_mutex );
- ldap_pvt_thread_yield();
- goto retry_lock;
- }
+ if ( !LDAP_BACK_USE_TEMPORARIES( mi ) ) {
+ ldap_pvt_thread_mutex_unlock( &mi->mi_conninfo.lai_mutex );
- mc->mc_refcnt++;
+ ldap_pvt_thread_yield();
+ goto retry_lock;
+ }
+
+ /* release conn, and create a temporary */
+ mc = NULL;
+
+ } else {
+ if ( ( mi->mi_conn_ttl != 0 && op->o_time > mc->mc_create_time + mi->mi_conn_ttl )
+ || ( mi->mi_idle_timeout != 0 && op->o_time > mc->mc_time + mi->mi_idle_timeout ) )
+ {
+#if META_BACK_PRINT_CONNTREE > 0
+ meta_back_print_conntree( mi,
+ ">>> meta_back_getconn(expired)" );
+#endif /* META_BACK_PRINT_CONNTREE */
+
+ /* don't let anyone else use this expired connection */
+ if ( LDAP_BACK_PCONN_ISPRIV( mc ) ) {
+ if ( mc->mc_q.tqe_prev != NULL ) {
+ assert( LDAP_BACK_CONN_CACHED( mc ) );
+ assert( mi->mi_conn_priv[ LDAP_BACK_CONN2PRIV( mc ) ].mic_num > 0 );
+ LDAP_TAILQ_REMOVE( &mi->mi_conn_priv[ LDAP_BACK_CONN2PRIV( mc ) ].mic_priv,
+ mc, mc_q );
+ mi->mi_conn_priv[ LDAP_BACK_CONN2PRIV( mc ) ].mic_num--;
+ mc->mc_q.tqe_prev = NULL;
+ mc->mc_q.tqe_next = NULL;
+
+ } else {
+ assert( !LDAP_BACK_CONN_CACHED( mc ) );
+ }
+
+ } else {
+ (void)avl_delete( &mi->mi_conninfo.lai_tree,
+ (caddr_t)mc, meta_back_conndnmc_cmp );
+ }
+
+#if META_BACK_PRINT_CONNTREE > 0
+ meta_back_print_conntree( mi,
+ "<<< meta_back_getconn(expired)" );
+#endif /* META_BACK_PRINT_CONNTREE */
+ LDAP_BACK_CONN_TAINTED_SET( mc );
+ LDAP_BACK_CONN_CACHED_CLEAR( mc );
+
+ Debug( LDAP_DEBUG_TRACE, "%s meta_back_getconn: mc=%p conn=%ld expired (tainted).\n",
+ op->o_log_prefix, (void *)mc, LDAP_BACK_PCONN_ID( mc ) );
+ }
+
+ mc->mc_refcnt++;
+ }
}
ldap_pvt_thread_mutex_unlock( &mi->mi_conninfo.lai_mutex );
}
}
break;
+ case LDAP_REQ_COMPARE:
case LDAP_REQ_DELETE:
case LDAP_REQ_MODIFY:
/* just a unique candidate */
break;
- case LDAP_REQ_COMPARE:
case LDAP_REQ_SEARCH:
/* allow multiple candidates for the searchBase */
op_type = META_OP_ALLOW_MULTIPLE;
if ( sendok & LDAP_BACK_BINDING ) {
LDAP_BACK_CONN_BINDING_SET( mc );
}
+ if ( LDAP_BACK_CONN_ISPRIV( &mc_curr ) ) {
+ LDAP_BACK_CONN_ISPRIV_SET( mc );
+
+ } else if ( LDAP_BACK_CONN_ISANON( &mc_curr ) ) {
+ LDAP_BACK_CONN_ISANON_SET( mc );
+ }
+
+ } else if ( 0 ) {
+ /* TODO: if any of the connections is binding,
+ * release mc and create a new one */
}
for ( i = 0; i < mi->mi_ntargets; i++ ) {
*/
candidates[ i ].sr_err = meta_back_init_one_conn( op,
rs, mc, i, LDAP_BACK_CONN_ISPRIV( &mc_curr ),
- sendok );
+ LDAP_BACK_DONTSEND, !new_conn );
if ( candidates[ i ].sr_err == LDAP_SUCCESS ) {
META_CANDIDATE_SET( &candidates[ i ] );
ncandidates++;
mc = (metaconn_t *)avl_find( mi->mi_conninfo.lai_tree,
(caddr_t)&mc_curr, meta_back_conndn_cmp );
if ( mc != NULL ) {
+ /* catch taint errors */
+ assert( !LDAP_BACK_CONN_TAINTED( mc ) );
+
/* Don't reuse connections while they're still binding */
- if ( LDAP_BACK_CONN_BINDING( mc ) ) {
- ldap_pvt_thread_mutex_unlock( &mi->mi_conninfo.lai_mutex );
- ldap_pvt_thread_yield();
- goto retry_lock2;
- }
+ if ( META_BACK_CONN_CREATING( &mc->mc_conns[ i ] )
+ || LDAP_BACK_CONN_BINDING( &mc->mc_conns[ i ] ) )
+ {
+ if ( !LDAP_BACK_USE_TEMPORARIES( mi ) ) {
+ ldap_pvt_thread_mutex_unlock( &mi->mi_conninfo.lai_mutex );
+ ldap_pvt_thread_yield();
+ goto retry_lock2;
+ }
+
+ mc = NULL;
- mc->mc_refcnt++;
+ } else {
+ mc->mc_refcnt++;
+ }
}
ldap_pvt_thread_mutex_unlock( &mi->mi_conninfo.lai_mutex );
}
if ( sendok & LDAP_BACK_BINDING ) {
LDAP_BACK_CONN_BINDING_SET( mc );
}
+ if ( LDAP_BACK_CONN_ISPRIV( &mc_curr ) ) {
+ LDAP_BACK_CONN_ISPRIV_SET( mc );
+
+ } else if ( LDAP_BACK_CONN_ISANON( &mc_curr ) ) {
+ LDAP_BACK_CONN_ISANON_SET( mc );
+ }
}
}
* sends the appropriate result.
*/
err = meta_back_init_one_conn( op, rs, mc, i,
- LDAP_BACK_CONN_ISPRIV( &mc_curr ), sendok );
+ LDAP_BACK_CONN_ISPRIV( &mc_curr ), sendok, !new_conn );
if ( err != LDAP_SUCCESS ) {
/*
* FIXME: in case one target cannot
mc->mc_conn = mc_curr.mc_conn;
ber_dupbv( &mc->mc_local_ndn, &mc_curr.mc_local_ndn );
new_conn = 1;
- if ( sendok & LDAP_BACK_BINDING ) {
- LDAP_BACK_CONN_BINDING_SET( mc );
+ if ( LDAP_BACK_CONN_ISPRIV( &mc_curr ) ) {
+ LDAP_BACK_CONN_ISPRIV_SET( mc );
+
+ } else if ( LDAP_BACK_CONN_ISANON( &mc_curr ) ) {
+ LDAP_BACK_CONN_ISANON_SET( mc );
}
}
for ( i = 0; i < mi->mi_ntargets; i++ ) {
metatarget_t *mt = mi->mi_targets[ i ];
- metasingleconn_t *msc = &mc->mc_conns[ i ];
+
+ META_CANDIDATE_RESET( &candidates[ i ] );
if ( i == cached
|| meta_back_is_candidate( mt, &op->o_req_ndn,
* also init'd
*/
int lerr = meta_back_init_one_conn( op, rs, mc, i,
- LDAP_BACK_CONN_ISPRIV( &mc_curr ), LDAP_BACK_DONTSEND );
+ LDAP_BACK_CONN_ISPRIV( &mc_curr ),
+ LDAP_BACK_DONTSEND, !new_conn );
if ( lerr == LDAP_SUCCESS ) {
META_CANDIDATE_SET( &candidates[ i ] );
candidates[ i ].sr_err = LDAP_SUCCESS;
Debug( LDAP_DEBUG_TRACE, "%s: meta_back_getconn[%d]\n",
op->o_log_prefix, i, 0 );
+ } else if ( lerr == LDAP_UNAVAILABLE && !META_BACK_ONERR_STOP( mi ) ) {
+ META_CANDIDATE_SET( &candidates[ i ] );
+ candidates[ i ].sr_err = LDAP_UNAVAILABLE;
+
+ Debug( LDAP_DEBUG_TRACE, "%s: meta_back_getconn[%d] %s\n",
+ op->o_log_prefix, i,
+ mt->mt_isquarantined != LDAP_BACK_FQ_NO ? "quarantined" : "unavailable" );
+
} else {
/*
* be tried?
*/
if ( new_conn ) {
- ( void )meta_clear_one_candidate( msc );
+ ( void )meta_clear_one_candidate( op, mc, i );
}
/* leave the target candidate, but record the error for later use */
candidates[ i ].sr_err = lerr;
err = lerr;
if ( lerr == LDAP_UNAVAILABLE && mt->mt_isquarantined != LDAP_BACK_FQ_NO ) {
- Debug( LDAP_DEBUG_TRACE, "%s: meta_back_getconn[%d] quarantined: %d\n",
+ Debug( LDAP_DEBUG_TRACE, "%s: meta_back_getconn[%d] quarantined err=%d\n",
op->o_log_prefix, i, lerr );
} else {
- Debug( LDAP_DEBUG_ANY, "%s: meta_back_getconn[%d] failed: %d\n",
+ Debug( LDAP_DEBUG_ANY, "%s: meta_back_getconn[%d] failed err=%d\n",
op->o_log_prefix, i, lerr );
}
} else {
if ( new_conn ) {
- ( void )meta_clear_one_candidate( msc );
+ ( void )meta_clear_one_candidate( op, mc, i );
}
- META_CANDIDATE_RESET( &candidates[ i ] );
}
}
meta_back_release_conn( op, mc );
}
- rs->sr_err = LDAP_NO_SUCH_OBJECT;
- rs->sr_text = "Unable to select valid candidates";
+ if ( rs->sr_err == LDAP_SUCCESS ) {
+ rs->sr_err = LDAP_NO_SUCH_OBJECT;
+ rs->sr_text = "Unable to select valid candidates";
+ }
if ( sendok & LDAP_BACK_SENDERR ) {
if ( rs->sr_err == LDAP_NO_SUCH_OBJECT ) {
* Inserts the newly created metaconn in the avl tree
*/
ldap_pvt_thread_mutex_lock( &mi->mi_conninfo.lai_mutex );
- err = avl_insert( &mi->mi_conninfo.lai_tree, ( caddr_t )mc,
+#if META_BACK_PRINT_CONNTREE > 0
+ meta_back_print_conntree( mi, ">>> meta_back_getconn" );
+#endif /* META_BACK_PRINT_CONNTREE */
+
+ if ( LDAP_BACK_PCONN_ISPRIV( mc ) ) {
+ if ( mi->mi_conn_priv[ LDAP_BACK_CONN2PRIV( mc ) ].mic_num < mi->mi_conn_priv_max ) {
+ LDAP_TAILQ_INSERT_TAIL( &mi->mi_conn_priv[ LDAP_BACK_CONN2PRIV( mc ) ].mic_priv, mc, mc_q );
+ mi->mi_conn_priv[ LDAP_BACK_CONN2PRIV( mc ) ].mic_num++;
+ LDAP_BACK_CONN_CACHED_SET( mc );
+
+ } else {
+ LDAP_BACK_CONN_TAINTED_SET( mc );
+ }
+ rs->sr_err = 0;
+
+ } else {
+ err = avl_insert( &mi->mi_conninfo.lai_tree, ( caddr_t )mc,
meta_back_conndn_cmp, meta_back_conndn_dup );
+ LDAP_BACK_CONN_CACHED_SET( mc );
+ }
-#if PRINT_CONNTREE > 0
- myprint( mi->mi_conninfo.lai_tree, "meta_back_getconn" );
-#endif /* PRINT_CONNTREE */
-
+#if META_BACK_PRINT_CONNTREE > 0
+ meta_back_print_conntree( mi, ">>> meta_back_getconn" );
+#endif /* META_BACK_PRINT_CONNTREE */
ldap_pvt_thread_mutex_unlock( &mi->mi_conninfo.lai_mutex );
- /*
- * Err could be -1 in case a duplicate metaconn is inserted
- */
- switch ( err ) {
- case 0:
- break;
-
- case -1:
- /* duplicate: free and try to get the newly created one */
- if ( !( sendok & LDAP_BACK_BINDING ) ) {
- new_conn = 0;
- goto retry_lock;
- }
- LDAP_BACK_CONN_TAINTED_SET( mc );
- break;
+ if ( !LDAP_BACK_PCONN_ISPRIV( mc ) ) {
+ /*
+ * Err could be -1 in case a duplicate metaconn is inserted
+ */
+ switch ( err ) {
+ case 0:
+ break;
+
+ case -1:
+ LDAP_BACK_CONN_CACHED_CLEAR( mc );
+ /* duplicate: free and try to get the newly created one */
+ if ( !( sendok & LDAP_BACK_BINDING ) && !LDAP_BACK_USE_TEMPORARIES( mi ) ) {
+ mc->mc_refcnt = 0;
+ meta_back_conn_free( mc );
+
+ new_conn = 0;
+ goto retry_lock;
+ }
- default:
- Debug( LDAP_DEBUG_ANY,
- "%s meta_back_getconn: candidates=%d conn=%ld insert failed\n",
- op->o_log_prefix, ncandidates,
- LDAP_BACK_PCONN_ID( mc->mc_conn ) );
+ LDAP_BACK_CONN_TAINTED_SET( mc );
+ break;
+
+ default:
+ LDAP_BACK_CONN_CACHED_CLEAR( mc );
+ Debug( LDAP_DEBUG_ANY,
+ "%s meta_back_getconn: candidates=%d conn=%ld insert failed\n",
+ op->o_log_prefix, ncandidates,
+ LDAP_BACK_PCONN_ID( mc ) );
- mc->mc_refcnt = 0;
- meta_back_conn_free( mc );
+ mc->mc_refcnt = 0;
+ meta_back_conn_free( mc );
- rs->sr_err = LDAP_OTHER;
- rs->sr_text = "proxy bind collision";
- if ( sendok & LDAP_BACK_SENDERR ) {
- send_ldap_result( op, rs );
- rs->sr_text = NULL;
+ rs->sr_err = LDAP_OTHER;
+ rs->sr_text = "proxy bind collision";
+ if ( sendok & LDAP_BACK_SENDERR ) {
+ send_ldap_result( op, rs );
+ rs->sr_text = NULL;
+ }
+ return NULL;
}
- return NULL;
}
Debug( LDAP_DEBUG_TRACE,
"%s meta_back_getconn: candidates=%d conn=%ld inserted\n",
op->o_log_prefix, ncandidates,
- LDAP_BACK_PCONN_ID( mc->mc_conn ) );
+ LDAP_BACK_PCONN_ID( mc ) );
} else {
Debug( LDAP_DEBUG_TRACE,
"%s meta_back_getconn: candidates=%d conn=%ld fetched\n",
op->o_log_prefix, ncandidates,
- LDAP_BACK_PCONN_ID( mc->mc_conn ) );
+ LDAP_BACK_PCONN_ID( mc ) );
}
-
+
return mc;
}
}
assert( mc->mc_refcnt > 0 );
mc->mc_refcnt--;
- LDAP_BACK_CONN_BINDING_CLEAR( mc );
+ /* NOTE: the connection is removed if either it is tainted
+ * or if it is shared and no one else is using it. This needs
+ * to occur because for intrinsic reasons cached connections
+ * that are not privileged would live forever and pollute
+ * the connection space (and eat up resources). Maybe this
+ * should be configurable... */
if ( LDAP_BACK_CONN_TAINTED( mc ) ) {
Debug( LDAP_DEBUG_TRACE, "%s meta_back_release_conn: mc=%p conn=%ld tainted.\n",
- op->o_log_prefix, (void *)mc, LDAP_BACK_PCONN_ID( mc->mc_conn ) );
- (void)avl_delete( &mi->mi_conninfo.lai_tree,
- ( caddr_t )mc, meta_back_conndnmc_cmp );
+ op->o_log_prefix, (void *)mc, LDAP_BACK_PCONN_ID( mc ) );
+#if META_BACK_PRINT_CONNTREE > 0
+ meta_back_print_conntree( mi, ">>> meta_back_release_conn" );
+#endif /* META_BACK_PRINT_CONNTREE */
+
+ if ( LDAP_BACK_PCONN_ISPRIV( mc ) ) {
+ if ( mc->mc_q.tqe_prev != NULL ) {
+ assert( LDAP_BACK_CONN_CACHED( mc ) );
+ assert( mi->mi_conn_priv[ LDAP_BACK_CONN2PRIV( mc ) ].mic_num > 0 );
+ mi->mi_conn_priv[ LDAP_BACK_CONN2PRIV( mc ) ].mic_num--;
+ LDAP_TAILQ_REMOVE( &mi->mi_conn_priv[ LDAP_BACK_CONN2PRIV( mc ) ].mic_priv, mc, mc_q );
+
+ } else {
+ assert( !LDAP_BACK_CONN_CACHED( mc ) );
+ }
+ mc->mc_q.tqe_prev = NULL;
+ mc->mc_q.tqe_next = NULL;
+
+ } else {
+ metaconn_t *tmpmc;
+
+ tmpmc = avl_delete( &mi->mi_conninfo.lai_tree,
+ ( caddr_t )mc, meta_back_conndnmc_cmp );
+
+ if ( tmpmc == NULL ) {
+ Debug( LDAP_DEBUG_TRACE, "%s: meta_back_release_conn: unable to find mc=%p\n",
+ op->o_log_prefix, (void *)mc, 0 );
+ } else {
+ assert( tmpmc == mc );
+ }
+ }
+
+ LDAP_BACK_CONN_CACHED_CLEAR( mc );
+
+#if META_BACK_PRINT_CONNTREE > 0
+ meta_back_print_conntree( mi, "<<< meta_back_release_conn" );
+#endif /* META_BACK_PRINT_CONNTREE */
+
if ( mc->mc_refcnt == 0 ) {
meta_back_conn_free( mc );
+ mc = NULL;
}
}
+
+ if ( mc != NULL && LDAP_BACK_CONN_BINDING( mc ) ) {
+ LDAP_BACK_CONN_BINDING_CLEAR( mc );
+ }
+
if ( dolock ) {
ldap_pvt_thread_mutex_unlock( &mi->mi_conninfo.lai_mutex );
}
projects / openldap / blobdiff