/* $OpenLDAP$ */
/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
*
- * Copyright 1999-2005 The OpenLDAP Foundation.
+ * Copyright 1999-2006 The OpenLDAP Foundation.
* Portions Copyright 2001-2003 Pierangelo Masarati.
* Portions Copyright 1999-2003 Howard Chu.
* All rights reserved.
#include <stdio.h>
+#include <ac/errno.h>
#include <ac/socket.h>
#include <ac/string.h>
int
meta_back_conn_cmp(
const void *c1,
- const void *c2
- )
+ const void *c2 )
{
- struct metaconn *lc1 = ( struct metaconn * )c1;
- struct metaconn *lc2 = ( struct metaconn * )c2;
+ metaconn_t *mc1 = ( metaconn_t * )c1;
+ metaconn_t *mc2 = ( metaconn_t * )c2;
+ int rc;
- return SLAP_PTRCMP( lc1->mc_conn, lc2->mc_conn );
+ /* If local DNs don't match, it is definitely not a match */
+ rc = ber_bvcmp( &mc1->mc_local_ndn, &mc2->mc_local_ndn );
+ if ( rc ) {
+ return rc;
+ }
+
+ /* For shared sessions, conn is NULL. Only explicitly
+ * bound sessions will have non-NULL conn.
+ */
+ return SLAP_PTRCMP( mc1->mc_conn, mc2->mc_conn );
}
/*
int
meta_back_conn_dup(
void *c1,
- void *c2
- )
+ void *c2 )
{
- struct metaconn *lc1 = ( struct metaconn * )c1;
- struct metaconn *lc2 = ( struct metaconn * )c2;
+ metaconn_t *mc1 = ( metaconn_t * )c1;
+ metaconn_t *mc2 = ( metaconn_t * )c2;
- return( ( lc1->mc_conn == lc2->mc_conn ) ? -1 : 0 );
+ /* Cannot have more than one shared session with same DN */
+ if ( dn_match( &mc1->mc_local_ndn, &mc2->mc_local_ndn ) &&
+ mc1->mc_conn == mc2->mc_conn )
+ {
+ return -1;
+ }
+
+ return 0;
}
/*
static void
ravl_print( Avlnode *root, int depth )
{
- int i;
+ int i;
+ metaconn_t *mc = (metaconn_t *)root->avl_data;
if ( root == 0 ) {
return;
printf( " " );
}
- printf( "c(%d) %d\n", ( ( struct metaconn * )root->avl_data )->mc_conn->c_connid, root->avl_bf );
+ printf( "c(%d%s%s) %d\n",
+ LDAP_BACK_PCONN_ID( mc->mc_conn ),
+ BER_BVISNULL( &mc->mc_local_ndn ) ? "" : ": ",
+ BER_BVISNULL( &mc->mc_local_ndn ) ? "" : mc->mc_local_ndn.bv_val,
+ root->avl_bf );
ravl_print( root->avl_left, depth + 1 );
}
*
* Allocates a connection structure, making room for all the referenced targets
*/
-static struct metaconn *
-metaconn_alloc( int ntargets )
+static metaconn_t *
+metaconn_alloc(
+ Operation *op )
{
- struct metaconn *lc;
+ metainfo_t *mi = ( metainfo_t * )op->o_bd->be_private;
+ metaconn_t *mc;
+ int i, ntargets = mi->mi_ntargets;
assert( ntargets > 0 );
- /* malloc once only; leave an extra one for one-past-end */
- lc = ch_malloc( sizeof( struct metaconn )
- + sizeof( struct metasingleconn ) * ( ntargets + 1 ) );
- if ( lc == NULL ) {
+ /* malloc all in one */
+ mc = ( metaconn_t * )ch_malloc( sizeof( metaconn_t )
+ + sizeof( metasingleconn_t ) * ntargets );
+ if ( mc == NULL ) {
return NULL;
}
- lc->mc_conns = (struct metasingleconn *)&lc[ 1 ];
-
- /* FIXME: needed by META_LAST() */
- lc->mc_conns[ ntargets ].msc_candidate = META_LAST_CONN;
-
- for ( ; ntargets-- > 0; ) {
- lc->mc_conns[ ntargets ].msc_ld = NULL;
- BER_BVZERO( &lc->mc_conns[ ntargets ].msc_bound_ndn );
- BER_BVZERO( &lc->mc_conns[ ntargets ].msc_cred );
- lc->mc_conns[ ntargets ].msc_bound = META_UNBOUND;
+ for ( i = 0; i < ntargets; i++ ) {
+ mc->mc_conns[ i ].msc_ld = NULL;
+ BER_BVZERO( &mc->mc_conns[ i ].msc_bound_ndn );
+ BER_BVZERO( &mc->mc_conns[ i ].msc_cred );
+ LDAP_BACK_CONN_ISBOUND_CLEAR( &mc->mc_conns[ i ] );
+ mc->mc_conns[ i ].msc_info = mi;
}
- lc->mc_bound_target = META_BOUND_NONE;
+ BER_BVZERO( &mc->mc_local_ndn );
+ mc->msc_mscflags = 0;
+ mc->mc_authz_target = META_BOUND_NONE;
+ ldap_pvt_thread_mutex_init( &mc->mc_mutex );
+ mc->mc_refcnt = 1;
+ mc->mc_tainted = 0;
- return lc;
+ return mc;
}
-/*
- * metaconn_free
- *
- * clears a metaconn
- */
static void
-metaconn_free(
- struct metaconn *lc
-)
+meta_back_freeconn(
+ Operation *op,
+ metaconn_t *mc )
{
- if ( !lc ) {
- return;
+ metainfo_t *mi = ( metainfo_t * )op->o_bd->be_private;
+
+ assert( mc != NULL );
+
+ ldap_pvt_thread_mutex_lock( &mi->mi_conninfo.lai_mutex );
+
+ if ( --mc->mc_refcnt == 0 ) {
+ meta_back_conn_free( mc );
}
-
- free( lc );
+
+ ldap_pvt_thread_mutex_unlock( &mi->mi_conninfo.lai_mutex );
}
/*
- * init_one_conn
+ * meta_back_init_one_conn
*
* Initializes one connection
*/
-static int
-init_one_conn(
- Operation *op,
- SlapReply *rs,
- struct metatarget *lt,
- struct metasingleconn *lsc,
- char *candidate,
- ldap_back_send_t sendok )
+int
+meta_back_init_one_conn(
+ Operation *op,
+ SlapReply *rs,
+ metatarget_t *mt,
+ metaconn_t *mc,
+ int candidate,
+ int ispriv,
+ ldap_back_send_t sendok )
{
- struct metainfo *li = ( struct metainfo * )op->o_bd->be_private;
- int vers;
- dncookie dc;
+ metainfo_t *mi = ( metainfo_t * )op->o_bd->be_private;
+ metasingleconn_t *msc = &mc->mc_conns[ candidate ];
+ int vers;
+ dncookie dc;
+ int isauthz = ( candidate == mc->mc_authz_target );
/*
* Already init'ed
*/
- if ( lsc->msc_ld != NULL ) {
- rs->sr_err = LDAP_SUCCESS;
- goto error_return;
+ if ( msc->msc_ld != NULL ) {
+ if ( mt->mt_idle_timeout == 0 ) {
+ return rs->sr_err = LDAP_SUCCESS;
+ }
+
+ if ( op->o_time > msc->msc_time + mt->mt_idle_timeout ) {
+ Debug( LDAP_DEBUG_TRACE,
+ "%s meta_back_init_one_conn[%d]: idle timeout.\n",
+ op->o_log_prefix, candidate, 0 );
+ if ( meta_back_retry( op, rs, mc, candidate, sendok ) ) {
+ return rs->sr_err;
+ }
+ }
+
+ msc->msc_time = op->o_time;
}
/*
* Attempts to initialize the connection to the target ds
*/
- rs->sr_err = ldap_initialize( &lsc->msc_ld, lt->mt_uri );
+ rs->sr_err = ldap_initialize( &msc->msc_ld, mt->mt_uri );
if ( rs->sr_err != LDAP_SUCCESS ) {
goto error_return;
}
* bound with a particular version, then so can we.
*/
vers = op->o_conn->c_protocol;
- ldap_set_option( lsc->msc_ld, LDAP_OPT_PROTOCOL_VERSION, &vers );
+ ldap_set_option( msc->msc_ld, LDAP_OPT_PROTOCOL_VERSION, &vers );
/* automatically chase referrals ("chase-referrals"/"dont-chase-referrals" statement) */
- if ( LDAP_BACK_CHASE_REFERRALS( li ) ) {
- ldap_set_option( lsc->msc_ld, LDAP_OPT_REFERRALS, LDAP_OPT_ON );
+ if ( LDAP_BACK_CHASE_REFERRALS( mi ) ) {
+ ldap_set_option( msc->msc_ld, LDAP_OPT_REFERRALS, LDAP_OPT_ON );
}
#ifdef HAVE_TLS
- /* start TLS ("start-tls"/"try-start-tls" statements) */
- if ( ( LDAP_BACK_USE_TLS( li ) || ( op->o_conn->c_is_tls && LDAP_BACK_PROPAGATE_TLS( li ) ) )
- && !ldap_is_ldaps_url( lt->mt_uri ) )
+ /* start TLS ("tls [try-]{start|propagate}" statement) */
+ if ( ( LDAP_BACK_USE_TLS( mi ) || ( op->o_conn->c_is_tls && LDAP_BACK_PROPAGATE_TLS( mi ) ) )
+ && !ldap_is_ldaps_url( mt->mt_uri ) )
{
#ifdef SLAP_STARTTLS_ASYNCHRONOUS
/*
- * use asynchronous StartTLS
- * in case, chase referral (not implemented yet)
+ * use asynchronous StartTLS; in case, chase referral
+ * FIXME: OpenLDAP does not return referral on StartTLS yet
*/
int msgid;
- rs->sr_err = ldap_start_tls( lsc->msc_ld, NULL, NULL, &msgid );
+ rs->sr_err = ldap_start_tls( msc->msc_ld, NULL, NULL, &msgid );
if ( rs->sr_err == LDAP_SUCCESS ) {
LDAPMessage *res = NULL;
- int rc, retries = 1;
- struct timeval tv = { 0, 0 };
+ int rc, nretries = mt->mt_nretries;
+ struct timeval tv;
+
+ LDAP_BACK_TV_SET( &tv );
retry:;
- rc = ldap_result( lsc->msc_ld, msgid, LDAP_MSG_ALL, &tv, &res );
+ rc = ldap_result( msc->msc_ld, msgid, LDAP_MSG_ALL, &tv, &res );
if ( rc < 0 ) {
rs->sr_err = LDAP_OTHER;
} else if ( rc == 0 ) {
- if ( retries ) {
- retries--;
- tv.tv_sec = 0;
- tv.tv_usec = 100000;
+ if ( nretries != 0 ) {
+ if ( nretries > 0 ) {
+ nretries--;
+ }
+ LDAP_BACK_TV_SET( &tv );
goto retry;
}
rs->sr_err = LDAP_OTHER;
} else if ( rc == LDAP_RES_EXTENDED ) {
struct berval *data = NULL;
- rs->sr_err = ldap_parse_extended_result( lsc->msc_ld, res,
+ rs->sr_err = ldap_parse_extended_result( msc->msc_ld, res,
NULL, &data, 0 );
if ( rs->sr_err == LDAP_SUCCESS ) {
- rs->sr_err = ldap_result2error( lsc->msc_ld, res, 1 );
+ int err;
+
+ rs->sr_err = ldap_parse_result( msc->msc_ld, res,
+ &err, NULL, NULL, NULL, NULL, 1 );
res = NULL;
+
+ if ( rs->sr_err == LDAP_SUCCESS ) {
+ rs->sr_err = err;
+ }
/* FIXME: in case a referral
* is returned, should we try
* using it instead of the
* configured URI? */
if ( rs->sr_err == LDAP_SUCCESS ) {
- ldap_install_tls( lsc->msc_ld );
+ ldap_install_tls( msc->msc_ld );
} else if ( rs->sr_err == LDAP_REFERRAL ) {
rs->sr_err = LDAP_OTHER;
/*
* use synchronous StartTLS
*/
- rs->sr_err = ldap_start_tls_s( lsc->msc_ld, NULL, NULL );
+ rs->sr_err = ldap_start_tls_s( msc->msc_ld, NULL, NULL );
#endif /* ! SLAP_STARTTLS_ASYNCHRONOUS */
/* if StartTLS is requested, only attempt it if the URL
* of misconfiguration, but also when used in the chain
* overlay, where the "uri" can be parsed out of a referral */
if ( rs->sr_err == LDAP_SERVER_DOWN
- || ( rs->sr_err != LDAP_SUCCESS && LDAP_BACK_TLS_CRITICAL( li ) ) )
+ || ( rs->sr_err != LDAP_SUCCESS && LDAP_BACK_TLS_CRITICAL( mi ) ) )
{
- ldap_unbind_ext_s( lsc->msc_ld, NULL, NULL );
+ ldap_unbind_ext_s( msc->msc_ld, NULL, NULL );
goto error_return;
}
}
/*
* Set the network timeout if set
*/
- if ( li->mi_network_timeout != 0 ) {
+ if ( mt->mt_network_timeout != 0 ) {
struct timeval network_timeout;
network_timeout.tv_usec = 0;
- network_timeout.tv_sec = li->mi_network_timeout;
+ network_timeout.tv_sec = mt->mt_network_timeout;
- ldap_set_option( lsc->msc_ld, LDAP_OPT_NETWORK_TIMEOUT,
+ ldap_set_option( msc->msc_ld, LDAP_OPT_NETWORK_TIMEOUT,
(void *)&network_timeout );
}
- /*
- * Sets a cookie for the rewrite session
- */
- ( void )rewrite_session_init( lt->mt_rwmap.rwm_rw, op->o_conn );
-
/*
* If the connection DN is not null, an attempt to rewrite it is made
*/
- if ( !BER_BVISEMPTY( &op->o_conn->c_dn ) ) {
- dc.rwmap = <->mt_rwmap;
- dc.conn = op->o_conn;
- dc.rs = rs;
- dc.ctx = "bindDN";
-
- /*
- * Rewrite the bind dn if needed
- */
- if ( ldap_back_dn_massage( &dc, &op->o_conn->c_dn,
- &lsc->msc_bound_ndn ) )
- {
- goto error_return;
- }
- /* copy the DN idf needed */
- if ( lsc->msc_bound_ndn.bv_val == op->o_conn->c_dn.bv_val ) {
- ber_dupbv( &lsc->msc_bound_ndn, &op->o_conn->c_dn );
+ if ( ispriv ) {
+ if ( !BER_BVISNULL( &mt->mt_pseudorootdn ) ) {
+ ber_dupbv( &msc->msc_bound_ndn, &mt->mt_pseudorootdn );
+ if ( !BER_BVISNULL( &mt->mt_pseudorootpw ) ) {
+ ber_dupbv( &msc->msc_cred, &mt->mt_pseudorootpw );
+ }
+
+ } else {
+ ber_str2bv( "", 0, 1, &msc->msc_bound_ndn );
}
- assert( !BER_BVISNULL( &lsc->msc_bound_ndn ) );
+ LDAP_BACK_CONN_ISPRIV_SET( msc );
} else {
- ber_str2bv( "", 0, 1, &lsc->msc_bound_ndn );
+ BER_BVZERO( &msc->msc_cred );
+ BER_BVZERO( &msc->msc_bound_ndn );
+ if ( !BER_BVISEMPTY( &op->o_ndn )
+ && SLAP_IS_AUTHZ_BACKEND( op )
+ && isauthz )
+ {
+ dc.target = mt;
+ dc.conn = op->o_conn;
+ dc.rs = rs;
+ dc.ctx = "bindDN";
+
+ /*
+ * Rewrite the bind dn if needed
+ */
+ if ( ldap_back_dn_massage( &dc, &op->o_conn->c_dn,
+ &msc->msc_bound_ndn ) )
+ {
+ ldap_unbind_ext_s( msc->msc_ld, NULL, NULL );
+ goto error_return;
+ }
+
+ /* copy the DN idf needed */
+ if ( msc->msc_bound_ndn.bv_val == op->o_conn->c_dn.bv_val ) {
+ ber_dupbv( &msc->msc_bound_ndn, &op->o_conn->c_dn );
+ }
+
+ } else {
+ ber_str2bv( "", 0, 1, &msc->msc_bound_ndn );
+ }
}
- lsc->msc_bound = META_UNBOUND;
+ assert( !BER_BVISNULL( &msc->msc_bound_ndn ) );
+
+ LDAP_BACK_CONN_ISBOUND_CLEAR( msc );
error_return:;
- if ( rs->sr_err != LDAP_SUCCESS ) {
+ 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 );
+
+ if ( mt->mt_idle_timeout ) {
+ msc->msc_time = op->o_time;
+ }
+
+ } else {
rs->sr_err = slap_map_api2result( rs );
if ( sendok & LDAP_BACK_SENDERR ) {
send_ldap_result( op, rs );
rs->sr_text = NULL;
}
+ }
- } else {
+ return rs->sr_err;
+}
- /*
- * The candidate is activated
- */
- *candidate = META_CANDIDATE;
+/*
+ * meta_back_retry
+ *
+ * Retries one connection
+ */
+int
+meta_back_retry(
+ Operation *op,
+ SlapReply *rs,
+ metaconn_t *mc,
+ int candidate,
+ ldap_back_send_t sendok )
+{
+ metainfo_t *mi = ( metainfo_t * )op->o_bd->be_private;
+ metatarget_t *mt = &mi->mi_targets[ candidate ];
+ int rc = LDAP_UNAVAILABLE;
+ metasingleconn_t *msc = &mc->mc_conns[ candidate ];
+
+retry_lock:;
+ ldap_pvt_thread_mutex_lock( &mi->mi_conninfo.lai_mutex );
+
+ assert( mc->mc_refcnt > 0 );
+
+ if ( mc->mc_refcnt == 1 ) {
+ char buf[ SLAP_TEXT_BUFLEN ];
+
+ while ( ldap_pvt_thread_mutex_trylock( &mc->mc_mutex ) ) {
+ ldap_pvt_thread_mutex_unlock( &mi->mi_conninfo.lai_mutex );
+ ldap_pvt_thread_yield();
+ goto retry_lock;
+ }
+
+ snprintf( buf, sizeof( buf ),
+ "retrying URI=\"%s\" DN=\"%s\"",
+ mt->mt_uri,
+ BER_BVISNULL( &msc->msc_bound_ndn ) ?
+ "" : msc->msc_bound_ndn.bv_val );
+ Debug( LDAP_DEBUG_ANY,
+ "%s meta_back_retry[%d]: %s.\n",
+ op->o_log_prefix, candidate, buf );
+
+ meta_clear_one_candidate( msc );
+ 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, mt, mc, candidate,
+ LDAP_BACK_CONN_ISPRIV( mc ), sendok );
+
+ if ( rc == LDAP_SUCCESS ) {
+ rc = meta_back_single_dobind( op, rs, mc, candidate,
+ sendok, mt->mt_nretries, 0 );
+ }
+
+ ldap_pvt_thread_mutex_unlock( &mc->mc_mutex );
}
- return rs->sr_err;
+ if ( rc != LDAP_SUCCESS ) {
+ mc->mc_tainted = 1;
+ }
+
+ ldap_pvt_thread_mutex_unlock( &mi->mi_conninfo.lai_mutex );
+
+ return rc == LDAP_SUCCESS ? 1 : 0;
}
/*
switch ( rs->sr_type ) {
case REP_SEARCH:
- ((int *)op->o_callback->sc_private)[0] = (int)op->o_private;
+ ((long *)op->o_callback->sc_private)[0] = (long)op->o_private;
break;
case REP_SEARCHREF:
SlapReply *rs,
struct berval *ndn )
{
- struct metainfo *li = ( struct metainfo * )op->o_bd->be_private;
- int candidate;
+ metainfo_t *mi = ( metainfo_t * )op->o_bd->be_private;
+ long candidate;
/*
* tries to get a unique candidate
* (takes care of default target)
*/
- candidate = meta_back_select_unique_candidate( li, ndn );
+ candidate = meta_back_select_unique_candidate( mi, ndn );
/*
* if any is found, inits the connection
/* if multiple candidates can serve the operation,
* and a default target is defined, and it is
* a candidate, try using it (FIXME: YMMV) */
- if ( li->mi_defaulttarget != META_DEFAULT_TARGET_NONE
- && meta_back_is_candidate( &li->mi_targets[ li->mi_defaulttarget ]->mt_nsuffix, ndn ) )
+ if ( mi->mi_defaulttarget != META_DEFAULT_TARGET_NONE
+ && meta_back_is_candidate( &mi->mi_targets[ mi->mi_defaulttarget ].mt_nsuffix,
+ mi->mi_targets[ mi->mi_defaulttarget ].mt_scope,
+ ndn, op->o_tag == LDAP_REQ_SEARCH ? op->ors_scope : LDAP_SCOPE_BASE ) )
{
- candidate = li->mi_defaulttarget;
+ candidate = mi->mi_defaulttarget;
rs->sr_err = LDAP_SUCCESS;
rs->sr_text = NULL;
}
break;
}
+
+ } else {
+ rs->sr_err = LDAP_SUCCESS;
}
return candidate;
}
+static void *meta_back_candidates_dummy;
+
static void
-meta_back_candidate_keyfree( void *key, void *data )
+meta_back_candidates_keyfree(
+ void *key,
+ void *data )
{
+ metacandidates_t *mc = (metacandidates_t *)data;
+
+ ber_memfree_x( mc->mc_candidates, NULL );
ber_memfree_x( data, NULL );
}
-char *
+SlapReply *
meta_back_candidates_get( Operation *op )
{
- struct metainfo *li = ( struct metainfo * )op->o_bd->be_private;
- void *data = NULL;
+ metainfo_t *mi = ( metainfo_t * )op->o_bd->be_private;
+ metacandidates_t *mc;
if ( op->o_threadctx ) {
+ void *data = NULL;
+
ldap_pvt_thread_pool_getkey( op->o_threadctx,
- meta_back_candidate_keyfree, &data, NULL );
+ &meta_back_candidates_dummy, &data, NULL );
+ mc = (metacandidates_t *)data;
+
} else {
- data = (void *)li->mi_candidates;
+ mc = mi->mi_candidates;
}
- if ( data == NULL ) {
- data = ber_memalloc_x( sizeof( char ) * li->mi_ntargets, NULL );
+ if ( mc == NULL ) {
+ mc = ch_calloc( sizeof( metacandidates_t ), 1 );
+ mc->mc_ntargets = mi->mi_ntargets;
+ mc->mc_candidates = ch_calloc( sizeof( SlapReply ), mc->mc_ntargets );
if ( op->o_threadctx ) {
+ void *data = NULL;
+
+ data = (void *)mc;
ldap_pvt_thread_pool_setkey( op->o_threadctx,
- meta_back_candidate_keyfree, data,
- meta_back_candidate_keyfree );
+ &meta_back_candidates_dummy, data,
+ meta_back_candidates_keyfree );
} else {
- li->mi_candidates = (char *)data;
+ mi->mi_candidates = mc;
}
+
+ } else if ( mc->mc_ntargets < mi->mi_ntargets ) {
+ /* NOTE: in the future, may want to allow back-config
+ * to add/remove targets from back-meta... */
+ mc->mc_ntargets = mi->mi_ntargets;
+ mc->mc_candidates = ch_realloc( mc->mc_candidates,
+ sizeof( SlapReply ) * mc->mc_ntargets );
}
- return (char *)data;
+ return mc->mc_candidates;
}
/*
* that exactly none (noSuchObject) or one (TRUE/FALSE/UNDEFINED) is
* returned.
*/
-struct metaconn *
+metaconn_t *
meta_back_getconn(
- Operation *op,
- SlapReply *rs,
- int *candidate,
- ldap_back_send_t sendok )
+ Operation *op,
+ SlapReply *rs,
+ int *candidate,
+ ldap_back_send_t sendok )
{
- struct metainfo *li = ( struct metainfo * )op->o_bd->be_private;
- struct metaconn *lc, lc_curr;
+ metainfo_t *mi = ( metainfo_t * )op->o_bd->be_private;
+ metaconn_t *mc = NULL,
+ mc_curr = { 0 };
int cached = META_TARGET_NONE,
i = META_TARGET_NONE,
err = LDAP_SUCCESS,
- new_conn = 0;
+ new_conn = 0,
+ ncandidates = 0;
+
meta_op_type op_type = META_OP_REQUIRE_SINGLE;
int parent = 0,
newparent = 0;
- struct berval ndn = op->o_req_ndn;
+ struct berval ndn = op->o_req_ndn,
+ pndn;
+
+ SlapReply *candidates = meta_back_candidates_get( op );
- char *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 ) ) {
+ 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 );
- /* Searches for a metaconn in the avl tree */
- lc_curr.mc_conn = op->o_conn;
- ldap_pvt_thread_mutex_lock( &li->mi_conn_mutex );
- lc = (struct metaconn *)avl_find( li->mi_conntree,
- (caddr_t)&lc_curr, meta_back_conn_cmp );
- ldap_pvt_thread_mutex_unlock( &li->mi_conn_mutex );
+ } else {
+ mc_curr.mc_local_ndn = op->o_ndn;
+
+ /* Explicit binds must not be shared */
+ if ( op->o_tag == LDAP_REQ_BIND || SLAP_IS_AUTHZ_BACKEND( op ) ) {
+ mc_curr.mc_conn = op->o_conn;
+
+ } else {
+ mc_curr.mc_conn = LDAP_BACK_PCONN_SET( op );
+ }
+ }
+
+ /* Explicit Bind requests always get their own conn */
+ if ( !( sendok & LDAP_BACK_BINDING ) ) {
+ /* 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_conn_cmp );
+ if ( mc ) {
+ if ( mc->mc_tainted ) {
+ rs->sr_err = LDAP_UNAVAILABLE;
+ rs->sr_text = "remote server unavailable";
+ ldap_pvt_thread_mutex_unlock( &mi->mi_conninfo.lai_mutex );
+ return NULL;
+ }
+
+ /* 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_lock;
+ }
+ mc->mc_refcnt++;
+ }
+ ldap_pvt_thread_mutex_unlock( &mi->mi_conninfo.lai_mutex );
+ }
switch ( op->o_tag ) {
case LDAP_REQ_ADD:
/* if we go to selection, the entry must not exist,
* and we must be able to resolve the parent */
parent = 1;
- dnParent( &ndn, &ndn );
+ dnParent( &ndn, &pndn );
break;
case LDAP_REQ_MODRDN:
if ( op_type == META_OP_REQUIRE_ALL ) {
/* Looks like we didn't get a bind. Open a new session... */
- if ( !lc ) {
- lc = metaconn_alloc( li->mi_ntargets );
- lc->mc_conn = op->o_conn;
+ if ( mc == NULL ) {
+ mc = metaconn_alloc( op );
+ 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 );
+ }
}
- for ( i = 0; i < li->mi_ntargets; i++ ) {
+ for ( i = 0; i < mi->mi_ntargets; i++ ) {
+ metatarget_t *mt = &mi->mi_targets[ i ];
/*
* The target is activated; if needed, it is
* also init'd
*/
- int lerr = init_one_conn( op, rs, li->mi_targets[ i ],
- &lc->mc_conns[ i ], &candidates[ i ],
- sendok );
- if ( lerr != LDAP_SUCCESS ) {
+ candidates[ i ].sr_err = meta_back_init_one_conn( op,
+ rs, mt, mc, i,
+ LDAP_BACK_CONN_ISPRIV( &mc_curr ), sendok );
+ if ( candidates[ i ].sr_err == LDAP_SUCCESS ) {
+ candidates[ i ].sr_tag = META_CANDIDATE;
+ ncandidates++;
+
+ } else {
/*
* FIXME: in case one target cannot
* be init'd, should the other ones
* be tried?
*/
- candidates[ i ] = META_NOT_CANDIDATE;
-#if 0
- ( void )meta_clear_one_candidate( &lc->mc_conns[ i ] );
-#endif
- err = lerr;
+ candidates[ i ].sr_tag = META_NOT_CANDIDATE;
+ err = candidates[ i ].sr_err;
continue;
}
}
+
+ if ( ncandidates == 0 ) {
+ if ( new_conn ) {
+ meta_back_freeconn( op, mc );
+
+ } else {
+ meta_back_release_conn( op, mc );
+ }
+
+ 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 ) {
+ rs->sr_matched = op->o_bd->be_suffix[ 0 ].bv_val;
+ }
+ send_ldap_result( op, rs );
+ rs->sr_text = NULL;
+ rs->sr_matched = NULL;
+ }
+
+ return NULL;
+ }
+
goto done;
}
/*
* looks in cache, if any
*/
- if ( li->mi_cache.ttl != META_DNCACHE_DISABLED ) {
- cached = i = meta_dncache_get_target( &li->mi_cache, &op->o_req_ndn );
+ if ( mi->mi_cache.ttl != META_DNCACHE_DISABLED ) {
+ cached = i = meta_dncache_get_target( &mi->mi_cache, &op->o_req_ndn );
}
if ( op_type == META_OP_REQUIRE_SINGLE ) {
+ metatarget_t *mt = NULL;
+ metasingleconn_t *msc = NULL;
+
+ int j;
- memset( candidates, META_NOT_CANDIDATE, sizeof( char ) * li->mi_ntargets );
+ for ( j = 0; j < mi->mi_ntargets; j++ ) {
+ candidates[ j ].sr_tag = META_NOT_CANDIDATE;
+ }
/*
* tries to get a unique candidate
if ( i == META_TARGET_NONE ) {
i = meta_back_get_candidate( op, rs, &ndn );
+ if ( rs->sr_err == LDAP_NO_SUCH_OBJECT && parent ) {
+ i = meta_back_get_candidate( op, rs, &pndn );
+ }
+
if ( rs->sr_err != LDAP_SUCCESS ) {
+ if ( mc != NULL ) {
+ meta_back_release_conn( op, mc );
+ }
+
if ( sendok & LDAP_BACK_SENDERR ) {
+ if ( rs->sr_err == LDAP_NO_SUCH_OBJECT ) {
+ rs->sr_matched = op->o_bd->be_suffix[ 0 ].bv_val;
+ }
send_ldap_result( op, rs );
rs->sr_text = NULL;
+ rs->sr_matched = NULL;
}
+
return NULL;
}
}
if ( newparent && meta_back_get_candidate( op, rs, op->orr_nnewSup ) != i )
{
+ if ( mc != NULL ) {
+ meta_back_release_conn( op, mc );
+ }
+
rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
rs->sr_text = "cross-target rename not supported";
if ( sendok & LDAP_BACK_SENDERR ) {
send_ldap_result( op, rs );
rs->sr_text = NULL;
}
+
return NULL;
}
- Debug( LDAP_DEBUG_CACHE,
- "==>meta_back_getconn: got target %d for ndn=\"%s\" from cache\n",
+ Debug( LDAP_DEBUG_TRACE,
+ "==>meta_back_getconn: got target=%d for ndn=\"%s\" from cache\n",
i, op->o_req_ndn.bv_val, 0 );
- /* Retries searching for a metaconn in the avl tree */
- lc_curr.mc_conn = op->o_conn;
- ldap_pvt_thread_mutex_lock( &li->mi_conn_mutex );
- lc = (struct metaconn *)avl_find( li->mi_conntree,
- (caddr_t)&lc_curr, meta_back_conn_cmp );
- ldap_pvt_thread_mutex_unlock( &li->mi_conn_mutex );
+ if ( mc == NULL ) {
+ /* Retries searching for a metaconn in the avl tree
+ * the reason is that the connection might have been
+ * created by meta_back_get_candidate() */
+ if ( !( sendok & LDAP_BACK_BINDING ) ) {
+ 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_conn_cmp );
+ if ( mc != NULL ) {
+ mc->mc_refcnt++;
+ }
+ ldap_pvt_thread_mutex_unlock( &mi->mi_conninfo.lai_mutex );
+ }
- /* Looks like we didn't get a bind. Open a new session... */
- if ( !lc ) {
- lc = metaconn_alloc( li->mi_ntargets );
- lc->mc_conn = op->o_conn;
- new_conn = 1;
+ /* Looks like we didn't get a bind. Open a new session... */
+ if ( mc == NULL ) {
+ mc = metaconn_alloc( op );
+ 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 );
+ }
+ }
}
/*
* Clear all other candidates
*/
- ( void )meta_clear_unused_candidates( op, lc, i );
+ ( void )meta_clear_unused_candidates( op, i );
+
+ mt = &mi->mi_targets[ i ];
+ msc = &mc->mc_conns[ i ];
/*
* The target is activated; if needed, it is
- * also init'd. In case of error, init_one_conn
+ * also init'd. In case of error, meta_back_init_one_conn
* sends the appropriate result.
*/
- err = init_one_conn( op, rs, li->mi_targets[ i ],
- &lc->mc_conns[ i ], &candidates[ i ],
- sendok );
+ err = meta_back_init_one_conn( op, rs, mt, mc, i,
+ LDAP_BACK_CONN_ISPRIV( &mc_curr ), sendok );
if ( err != LDAP_SUCCESS ) {
-
/*
* FIXME: in case one target cannot
* be init'd, should the other ones
* be tried?
*/
- candidates[ i ] = META_NOT_CANDIDATE;
+ candidates[ i ].sr_tag = META_NOT_CANDIDATE;
if ( new_conn ) {
- ( void )meta_clear_one_candidate( &lc->mc_conns[ i ] );
- metaconn_free( lc );
+ (void)meta_clear_one_candidate( msc );
+ meta_back_freeconn( op, mc );
+
+ } else {
+ meta_back_release_conn( op, mc );
}
return NULL;
}
+ candidates[ i ].sr_err = LDAP_SUCCESS;
+ candidates[ i ].sr_tag = META_CANDIDATE;
+ ncandidates++;
+
if ( candidate ) {
*candidate = i;
}
} else {
/* Looks like we didn't get a bind. Open a new session... */
- if ( !lc ) {
- lc = metaconn_alloc( li->mi_ntargets );
- lc->mc_conn = op->o_conn;
+ if ( mc == NULL ) {
+ mc = metaconn_alloc( op );
+ 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 );
+ }
}
- for ( i = 0; i < li->mi_ntargets; i++ ) {
+ for ( i = 0; i < mi->mi_ntargets; i++ ) {
+ metatarget_t *mt = &mi->mi_targets[ i ];
+ metasingleconn_t *msc = &mc->mc_conns[ i ];
+
if ( i == cached
- || meta_back_is_candidate( &li->mi_targets[ i ]->mt_nsuffix,
- &op->o_req_ndn ) )
+ || meta_back_is_candidate( &mt->mt_nsuffix,
+ mt->mt_scope,
+ &op->o_req_ndn,
+ LDAP_SCOPE_SUBTREE ) )
{
/*
* The target is activated; if needed, it is
* also init'd
*/
- int lerr = init_one_conn( op, rs,
- li->mi_targets[ i ],
- &lc->mc_conns[ i ],
- &candidates[ i ],
+ int lerr = meta_back_init_one_conn( op, rs,
+ mt, mc, i,
+ LDAP_BACK_CONN_ISPRIV( &mc_curr ),
sendok );
- if ( lerr != LDAP_SUCCESS ) {
+ if ( lerr == LDAP_SUCCESS ) {
+ candidates[ i ].sr_tag = META_CANDIDATE;
+ candidates[ i ].sr_err = LDAP_SUCCESS;
+ ncandidates++;
+
+ Debug( LDAP_DEBUG_TRACE, "%s: meta_back_getconn[%d]\n",
+ op->o_log_prefix, i, 0 );
+
+ } else {
/*
* FIXME: in case one target cannot
* be init'd, should the other ones
* be tried?
*/
- candidates[ i ] = META_NOT_CANDIDATE;
-#if 0
- ( void )meta_clear_one_candidate( &lc->mc_conns[ i ] );
-#endif
+ if ( new_conn ) {
+ ( void )meta_clear_one_candidate( msc );
+ }
+ /* leave the target candidate, but record the error for later use */
+ candidates[ i ].sr_err = lerr;
err = lerr;
+
+ Debug( LDAP_DEBUG_ANY, "%s: meta_back_getconn[%d] failed: %d\n",
+ op->o_log_prefix, i, lerr );
+
continue;
}
} else {
- candidates[ i ] = META_NOT_CANDIDATE;
+ if ( new_conn ) {
+ ( void )meta_clear_one_candidate( msc );
+ }
+ candidates[ i ].sr_tag = META_NOT_CANDIDATE;
}
}
+
+ if ( ncandidates == 0 ) {
+ if ( new_conn ) {
+ meta_back_freeconn( op, mc );
+
+ } else {
+ meta_back_release_conn( op, mc );
+ }
+
+ 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 ) {
+ rs->sr_matched = op->o_bd->be_suffix[ 0 ].bv_val;
+ }
+ send_ldap_result( op, rs );
+ rs->sr_text = NULL;
+ rs->sr_matched = NULL;
+ }
+
+ return NULL;
+ }
}
done:;
- /* clear out init_one_conn non-fatal errors */
+ /* clear out meta_back_init_one_conn non-fatal errors */
rs->sr_err = LDAP_SUCCESS;
rs->sr_text = NULL;
/*
* Inserts the newly created metaconn in the avl tree
*/
- ldap_pvt_thread_mutex_lock( &li->mi_conn_mutex );
- err = avl_insert( &li->mi_conntree, ( caddr_t )lc,
+ ldap_pvt_thread_mutex_lock( &mi->mi_conninfo.lai_mutex );
+ err = avl_insert( &mi->mi_conninfo.lai_tree, ( caddr_t )mc,
meta_back_conn_cmp, meta_back_conn_dup );
#if PRINT_CONNTREE > 0
- myprint( li->mi_conntree );
+ myprint( mi->mi_conninfo.lai_tree );
#endif /* PRINT_CONNTREE */
- ldap_pvt_thread_mutex_unlock( &li->mi_conn_mutex );
+ ldap_pvt_thread_mutex_unlock( &mi->mi_conninfo.lai_mutex );
- Debug( LDAP_DEBUG_TRACE,
- "=>meta_back_getconn: conn %ld inserted\n",
- lc->mc_conn->c_connid, 0, 0 );
-
/*
* Err could be -1 in case a duplicate metaconn is inserted
+ *
+ * FIXME: what if the same client issues more than one
+ * asynchronous operations?
*/
if ( err != 0 ) {
+ 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 ) );
+
rs->sr_err = LDAP_OTHER;
rs->sr_text = "Internal server error";
- metaconn_free( lc );
+ meta_back_freeconn( op, mc );
if ( sendok & LDAP_BACK_SENDERR ) {
send_ldap_result( op, rs );
rs->sr_text = 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 ) );
+
} else {
Debug( LDAP_DEBUG_TRACE,
- "=>meta_back_getconn: conn %ld fetched\n",
- lc->mc_conn->c_connid, 0, 0 );
+ "%s meta_back_getconn: candidates=%d conn=%ld fetched\n",
+ op->o_log_prefix, ncandidates,
+ LDAP_BACK_PCONN_ID( mc->mc_conn ) );
}
- return lc;
+ return mc;
}
+void
+meta_back_release_conn(
+ Operation *op,
+ metaconn_t *mc )
+{
+ metainfo_t *mi = ( metainfo_t * )op->o_bd->be_private;
+
+ assert( mc != NULL );
+
+ ldap_pvt_thread_mutex_lock( &mi->mi_conninfo.lai_mutex );
+ assert( mc->mc_refcnt > 0 );
+ mc->mc_refcnt--;
+ LDAP_BACK_CONN_BINDING_CLEAR( mc );
+ if ( mc->mc_refcnt == 0 && mc->mc_tainted ) {
+ (void)avl_delete( &mi->mi_conninfo.lai_tree, ( caddr_t )mc,
+ meta_back_conn_cmp );
+ meta_back_conn_free( mc );
+ }
+ ldap_pvt_thread_mutex_unlock( &mi->mi_conninfo.lai_mutex );
+}
projects / openldap / blobdiff