/* $OpenLDAP$ */
/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
*
- * Copyright 1999-2005 The OpenLDAP Foundation.
+ * Copyright 1999-2008 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>
#include "back-meta.h"
/*
- * Set PRINT_CONNTREE larger than 0 to dump the connection tree (debug only)
+ * meta_back_conndn_cmp
+ *
+ * compares two struct metaconn based on the value of the conn pointer
+ * and of the local DN; used by avl stuff
+ */
+int
+meta_back_conndn_cmp(
+ const void *c1,
+ const void *c2 )
+{
+ metaconn_t *mc1 = ( metaconn_t * )c1;
+ metaconn_t *mc2 = ( metaconn_t * )c2;
+ int rc;
+
+ /* If local DNs don't match, it is definitely not a match */
+ /* For shared sessions, conn is NULL. Only explicitly
+ * bound sessions will have non-NULL conn.
+ */
+ rc = SLAP_PTRCMP( mc1->mc_conn, mc2->mc_conn );
+ if ( rc == 0 ) {
+ rc = ber_bvcmp( &mc1->mc_local_ndn, &mc2->mc_local_ndn );
+ }
+
+ return rc;
+}
+
+/*
+ * meta_back_conndnmc_cmp
+ *
+ * compares two struct metaconn based on the value of the conn pointer,
+ * the local DN and the struct pointer; used by avl stuff
*/
-#define PRINT_CONNTREE 0
+static int
+meta_back_conndnmc_cmp(
+ const void *c1,
+ const void *c2 )
+{
+ metaconn_t *mc1 = ( metaconn_t * )c1;
+ metaconn_t *mc2 = ( metaconn_t * )c2;
+ int rc;
+
+ /* If local DNs don't match, it is definitely not a match */
+ /* For shared sessions, conn is NULL. Only explicitly
+ * bound sessions will have non-NULL conn.
+ */
+ rc = SLAP_PTRCMP( mc1->mc_conn, mc2->mc_conn );
+ if ( rc == 0 ) {
+ rc = ber_bvcmp( &mc1->mc_local_ndn, &mc2->mc_local_ndn );
+ if ( rc == 0 ) {
+ rc = SLAP_PTRCMP( mc1, mc2 );
+ }
+ }
+
+ return rc;
+}
/*
* meta_back_conn_cmp
metaconn_t *mc1 = ( metaconn_t * )c1;
metaconn_t *mc2 = ( metaconn_t * )c2;
+ /* For shared sessions, conn is NULL. Only explicitly
+ * bound sessions will have non-NULL conn.
+ */
return SLAP_PTRCMP( mc1->mc_conn, mc2->mc_conn );
}
/*
- * meta_back_conn_dup
+ * meta_back_conndn_dup
*
* returns -1 in case a duplicate struct metaconn has been inserted;
* used by avl stuff
*/
int
-meta_back_conn_dup(
+meta_back_conndn_dup(
void *c1,
void *c2 )
{
metaconn_t *mc1 = ( metaconn_t * )c1;
metaconn_t *mc2 = ( metaconn_t * )c2;
- return( ( mc1->mc_conn == mc2->mc_conn ) ? -1 : 0 );
+ /* Cannot have more than one shared session with same DN */
+ if ( mc1->mc_conn == mc2->mc_conn &&
+ dn_match( &mc1->mc_local_ndn, &mc2->mc_local_ndn ) )
+ {
+ return -1;
+ }
+
+ return 0;
}
/*
* 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_print( metaconn_t *mc, char *avlstr )
{
- int i;
-
+ int i;
+
+ fputs( "targets=[", stderr );
+ for ( i = 0; i < mc->mc_info->mi_ntargets; i++ ) {
+ fputc( mc->mc_conns[ i ].msc_ld ? '*' : 'o', stderr);
+ }
+ fputc( ']', stderr );
+
+ fprintf( stderr, " mc=%p local=\"%s\" conn=%p refcnt=%d%s %s\n",
+ (void *)mc,
+ mc->mc_local_ndn.bv_val ? mc->mc_local_ndn.bv_val : "",
+ (void *)mc->mc_conn,
+ mc->mc_refcnt,
+ LDAP_BACK_CONN_TAINTED( mc ) ? " tainted" : "",
+ avlstr );
+}
+
+static void
+meta_back_ravl_print( Avlnode *root, int depth )
+{
+ int i;
+
if ( root == 0 ) {
return;
}
- ravl_print( root->avl_right, depth + 1 );
+ meta_back_ravl_print( root->avl_right, depth + 1 );
for ( i = 0; i < depth; i++ ) {
- printf( " " );
+ fprintf( stderr, "-" );
}
+ fputc( ' ', stderr );
- printf( "c(%d) %d\n", ( ( metaconn_t * )root->avl_data )->mc_conn->c_connid, root->avl_bf );
-
- ravl_print( root->avl_left, depth + 1 );
+ meta_back_print( (metaconn_t *)root->avl_data,
+ avl_bf2str( root->avl_bf ) );
+
+ meta_back_ravl_print( root->avl_left, depth + 1 );
}
-static void
-myprint( Avlnode *root )
+/* 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 )
{
- printf( "********\n" );
+ int c;
+
+ fprintf( stderr, "========> %s\n", msg );
- if ( root == 0 ) {
- printf( "\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] ", i );
+ meta_back_print( mc, "" );
+ 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 );
}
- printf( "********\n" );
+ 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 once only; leave an extra one for one-past-end */
- mc = ( metaconn_t * )ch_malloc( sizeof( metaconn_t )
- + sizeof( metasingleconn_t ) * ntargets );
+ /* malloc all in one */
+ mc = ( metaconn_t * )ch_calloc( 1, sizeof( metaconn_t )
+ + sizeof( metasingleconn_t ) * ( ntargets - 1 ) );
if ( mc == NULL ) {
return NULL;
}
- mc->mc_conns = ( metasingleconn_t * )&mc[ 1 ];
+ mc->mc_info = mi;
- 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 );
- mc->mc_conns[ i ].msc_bound = META_UNBOUND;
- mc->mc_conns[ i ].msc_info = mi;
- }
-
- mc->mc_auth_target = META_BOUND_NONE;
- ldap_pvt_thread_mutex_init( &mc->mc_mutex );
+ mc->mc_authz_target = META_BOUND_NONE;
+ mc->mc_refcnt = 1;
return mc;
}
-/*
- * meta_back_conn_free
- *
- * clears a metaconn
- */
-void
-meta_back_conn_free(
- metaconn_t *mc )
-{
- if ( mc == NULL ) {
- return;
- }
-
- ldap_pvt_thread_mutex_destroy( &mc->mc_mutex );
-
- free( mc );
-}
-
/*
* meta_back_init_one_conn
*
meta_back_init_one_conn(
Operation *op,
SlapReply *rs,
- metatarget_t *mt,
- metasingleconn_t *msc,
- ldap_back_send_t sendok )
+ metaconn_t *mc,
+ int candidate,
+ int ispriv,
+ ldap_back_send_t sendok,
+ int dolock )
{
- metainfo_t *mi = ( metainfo_t * )op->o_bd->be_private;
- int vers;
- dncookie dc;
+ metainfo_t *mi = ( metainfo_t * )op->o_bd->be_private;
+ metatarget_t *mt = mi->mi_targets[ candidate ];
+ metasingleconn_t *msc = &mc->mc_conns[ 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 */
+
+ /* if the server is quarantined, and
+ * - the current interval did not expire yet, or
+ * - no more retries should occur,
+ * don't return the connection */
+ if ( mt->mt_isquarantined ) {
+ slap_retry_info_t *ri = &mt->mt_quarantine;
+ int dont_retry = 0;
+
+ if ( mt->mt_quarantine.ri_interval ) {
+ ldap_pvt_thread_mutex_lock( &mt->mt_quarantine_mutex );
+ dont_retry = ( mt->mt_isquarantined > LDAP_BACK_FQ_NO );
+ if ( dont_retry ) {
+ dont_retry = ( ri->ri_num[ ri->ri_idx ] == SLAP_RETRYNUM_TAIL
+ || slap_get_time() < ri->ri_last + ri->ri_interval[ ri->ri_idx ] );
+ if ( !dont_retry ) {
+ if ( LogTest( LDAP_DEBUG_ANY ) ) {
+ char buf[ SLAP_TEXT_BUFLEN ];
+
+ snprintf( buf, sizeof( buf ),
+ "meta_back_init_one_conn[%d]: quarantine "
+ "retry block #%d try #%d",
+ candidate, ri->ri_idx, ri->ri_count );
+ Debug( LDAP_DEBUG_ANY, "%s %s.\n",
+ op->o_log_prefix, buf, 0 );
+ }
+
+ mt->mt_isquarantined = LDAP_BACK_FQ_RETRYING;
+ }
+
+ }
+ ldap_pvt_thread_mutex_unlock( &mt->mt_quarantine_mutex );
+ }
+
+ if ( dont_retry ) {
+ rs->sr_err = LDAP_UNAVAILABLE;
+ if ( op->o_conn && ( sendok & LDAP_BACK_SENDERR ) ) {
+ rs->sr_text = "Target is quarantined";
+ send_ldap_result( op, rs );
+ }
+ return rs->sr_err;
+ }
+ }
+
+retry_lock:;
+ if ( dolock ) {
+ ldap_pvt_thread_mutex_lock( &mi->mi_conninfo.lai_mutex );
+ }
/*
* Already init'ed
*/
- if ( msc->msc_ld != NULL ) {
+ if ( LDAP_BACK_CONN_ISBOUND( msc )
+ || LDAP_BACK_CONN_ISANON( msc ) )
+ {
+ assert( msc->msc_ld != NULL );
rs->sr_err = LDAP_SUCCESS;
- goto error_return;
+ 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;
+ rs->sr_text = "No connections to target are available";
+ 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 );
+ }
+
+ 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
*/
+ ldap_pvt_thread_mutex_lock( &mt->mt_uri_mutex );
rs->sr_err = ldap_initialize( &msc->msc_ld, mt->mt_uri );
+#ifdef HAVE_TLS
+ is_ldaps = ldap_is_ldaps_url( mt->mt_uri );
+#endif /* HAVE_TLS */
+ ldap_pvt_thread_mutex_unlock( &mt->mt_uri_mutex );
if ( rs->sr_err != LDAP_SUCCESS ) {
goto error_return;
}
* Set LDAP version. This will always succeed: If the client
* bound with a particular version, then so can we.
*/
- vers = op->o_conn->c_protocol;
- ldap_set_option( msc->msc_ld, LDAP_OPT_PROTOCOL_VERSION, &vers );
+ if ( mt->mt_version != 0 ) {
+ version = mt->mt_version;
+
+ } else if ( op->o_conn->c_protocol != 0 ) {
+ version = op->o_conn->c_protocol;
- /* automatically chase referrals ("chase-referrals"/"dont-chase-referrals" statement) */
- if ( LDAP_BACK_CHASE_REFERRALS( mi ) ) {
- ldap_set_option( msc->msc_ld, LDAP_OPT_REFERRALS, LDAP_OPT_ON );
+ } else {
+ version = LDAP_VERSION3;
}
+ ldap_set_option( msc->msc_ld, LDAP_OPT_PROTOCOL_VERSION, &version );
+ ldap_set_urllist_proc( msc->msc_ld, mt->mt_urllist_f, mt->mt_urllist_p );
+
+ /* automatically chase referrals ("chase-referrals [{yes|no}]" statement) */
+ ldap_set_option( msc->msc_ld, LDAP_OPT_REFERRALS,
+ LDAP_BACK_CHASE_REFERRALS( mi ) ? LDAP_OPT_ON : LDAP_OPT_OFF );
#ifdef HAVE_TLS
- /* start TLS ("start-tls"/"try-start-tls" statements) */
- if ( ( LDAP_BACK_USE_TLS( mi ) || ( op->o_conn->c_is_tls && LDAP_BACK_PROPAGATE_TLS( mi ) ) )
- && !ldap_is_ldaps_url( mt->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 ) ) )
+ && !is_ldaps )
{
#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;
if ( rs->sr_err == LDAP_SUCCESS ) {
LDAPMessage *res = NULL;
int rc, nretries = mt->mt_nretries;
- struct timeval tv = { 0, 0 };
+ struct timeval tv;
+
+ LDAP_BACK_TV_SET( &tv );
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--;
}
- tv.tv_sec = 0;
- tv.tv_usec = 100000;
+ LDAP_BACK_TV_SET( &tv );
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;
- rs->sr_err = ldap_parse_extended_result( msc->msc_ld, res,
- NULL, &data, 0 );
+ /* NOTE: right now, data is unused, so don't get it */
+ rs->sr_err = ldap_parse_extended_result( msc->msc_ld,
+ res, NULL, NULL /* &data */ , 0 );
if ( rs->sr_err == LDAP_SUCCESS ) {
- rs->sr_err = ldap_result2error( msc->msc_ld, res, 1 );
+ int err;
+
+ /* FIXME: matched? referrals? response controls? */
+ 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
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";
+ rs->sr_text = "Unwilling to chase referral "
+ "returned by Start TLS exop";
}
if ( data ) {
- if ( data->bv_val ) {
- ber_memfree( data->bv_val );
- }
- ber_memfree( data );
+ ber_bvfree( data );
}
}
* 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( mi ) ) )
+ || ( rs->sr_err != LDAP_SUCCESS
+ && LDAP_BACK_TLS_CRITICAL( mi ) ) )
{
- ldap_unbind_ext_s( msc->msc_ld, NULL, 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;
}
}
/*
* Set the network timeout if set
*/
- if ( mi->mi_network_timeout != 0 ) {
+ if ( mt->mt_network_timeout != 0 ) {
struct timeval network_timeout;
network_timeout.tv_usec = 0;
- network_timeout.tv_sec = mi->mi_network_timeout;
+ network_timeout.tv_sec = mt->mt_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( mt->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.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 ) )
- {
- goto error_return;
+
+ if ( ispriv ) {
+ 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 );
+ }
+
+ } else {
+ ber_bvreplace( &msc->msc_bound_ndn, &slap_empty_bv );
}
- /* 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 {
+ if ( !BER_BVISNULL( &msc->msc_cred ) ) {
+ memset( msc->msc_cred.bv_val, 0, msc->msc_cred.bv_len );
+ ber_memfree_x( msc->msc_cred.bv_val, NULL );
+ BER_BVZERO( &msc->msc_cred );
}
+ if ( !BER_BVISNULL( &msc->msc_bound_ndn ) ) {
+ ber_memfree_x( msc->msc_bound_ndn.bv_val, NULL );
+ 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 ) )
+ {
- assert( !BER_BVISNULL( &msc->msc_bound_ndn ) );
+#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;
+ }
+
+ /* copy the DN if 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 );
+ assert( !BER_BVISNULL( &msc->msc_bound_ndn ) );
+
+ } else {
+ ber_dupbv( &msc->msc_bound_ndn, (struct berval *)&slap_empty_bv );
+ }
}
- msc->msc_bound = META_UNBOUND;
+ 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 );
+ }
+
if ( rs->sr_err != LDAP_SUCCESS ) {
rs->sr_err = slap_map_api2result( rs );
if ( sendok & LDAP_BACK_SENDERR ) {
send_ldap_result( op, rs );
- rs->sr_text = NULL;
}
}
meta_back_retry(
Operation *op,
SlapReply *rs,
- metaconn_t *mc,
+ metaconn_t **mcp,
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;
+ metatarget_t *mt = mi->mi_targets[ candidate ];
+ metaconn_t *mc = *mcp;
metasingleconn_t *msc = &mc->mc_conns[ candidate ];
+ int rc = LDAP_UNAVAILABLE,
+ binding,
+ quarantine = 1;
+
+ 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\"",
+ 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 meta_back_retry[%d]: %s.\n",
+ op->o_log_prefix, candidate, buf );
+ }
+
+ 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, 0 );
+
+ /* restore the "binding" flag, in case */
+ if ( binding ) {
+ LDAP_BACK_CONN_BINDING_SET( msc );
+ }
+
+ if ( rc == LDAP_SUCCESS ) {
+ quarantine = 0;
+ rc = meta_back_single_dobind( op, rs, mcp, candidate,
+ sendok, mt->mt_nretries, 0 );
+
+ Debug( LDAP_DEBUG_ANY,
+ "%s meta_back_retry[%d]: "
+ "meta_back_single_dobind=%d\n",
+ op->o_log_prefix, candidate, rc );
+ if ( rc == LDAP_SUCCESS ) {
+ 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 ) {
+ SlapReply *candidates = meta_back_candidates_get( op );
+
+ candidates[ candidate ].sr_err = rc;
+
+ if ( *mcp != NULL ) {
+ 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
+ * releasing */
+ if ( META_BACK_ONERR_STOP( mi ) ) {
+ meta_back_release_conn_lock( mi, 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--;
+ LDAP_TAILQ_ENTRY_INIT( mc, mc_q );
+
+ } else {
+ assert( !LDAP_BACK_CONN_CACHED( mc ) );
+ }
- ldap_pvt_thread_mutex_lock( &mc->mc_mutex );
+ } 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 );
- ldap_unbind_ext_s( msc->msc_ld, NULL, NULL );
- msc->msc_ld = NULL;
- msc->msc_bound = 0;
+#if META_BACK_PRINT_CONNTREE > 0
+ meta_back_print_conntree( mi, "<<< meta_back_retry" );
+#endif /* META_BACK_PRINT_CONNTREE */
+ }
+ }
- /* mc here must be the regular mc, reset and ready for init */
- rc = meta_back_init_one_conn( op, rs, mt, msc, sendok );
+ if ( sendok & LDAP_BACK_SENDERR ) {
+ rs->sr_err = rc;
+ rs->sr_text = "Unable to retry";
+ send_ldap_result( op, rs );
+ }
+ }
- if ( rc == LDAP_SUCCESS ) {
- rc = meta_back_single_dobind( op, rs, mc, candidate,
- sendok, mt->mt_nretries );
- }
+ if ( quarantine && META_BACK_TGT_QUARANTINE( mt ) ) {
+ meta_back_quarantine( op, rs, candidate );
+ }
- ldap_pvt_thread_mutex_unlock( &mc->mc_mutex );
+ 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:
struct berval *ndn )
{
metainfo_t *mi = ( metainfo_t * )op->o_bd->be_private;
- int candidate;
+ long candidate;
/*
* tries to get a unique candidate
*/
if ( candidate == META_TARGET_NONE ) {
rs->sr_err = LDAP_NO_SUCH_OBJECT;
- rs->sr_text = "no suitable candidate target found";
+ rs->sr_text = "No suitable candidate target found";
} else if ( candidate == META_TARGET_MULTIPLE ) {
- Filter f = { 0 };
Operation op2 = *op;
SlapReply rs2 = { 0 };
slap_callback cb2 = { 0 };
op2.ors_slimit = 1;
op2.ors_tlimit = SLAP_NO_LIMIT;
- f.f_choice = LDAP_FILTER_PRESENT;
- f.f_desc = slap_schema.si_ad_objectClass;
- op2.ors_filter = &f;
- BER_BVSTR( &op2.ors_filterstr, "(objectClass=*)" );
+ op2.ors_filter = (Filter *)slap_filter_objectClass_pres;
+ op2.ors_filterstr = *slap_filterstr_objectClass_pres;
op2.o_callback = &cb2;
cb2.sc_response = meta_back_conn_cb;
* and a default target is defined, and it is
* a candidate, try using it (FIXME: YMMV) */
if ( mi->mi_defaulttarget != META_DEFAULT_TARGET_NONE
- && meta_back_is_candidate( &mi->mi_targets[ mi->mi_defaulttarget ].mt_nsuffix,
+ && meta_back_is_candidate( mi->mi_targets[ mi->mi_defaulttarget ],
ndn, op->o_tag == LDAP_REQ_SEARCH ? op->ors_scope : LDAP_SCOPE_BASE ) )
{
candidate = mi->mi_defaulttarget;
} else {
rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
- rs->sr_text = "cannot select unique candidate target";
+ rs->sr_text = "Unable to select unique candidate target";
}
break;
}
+
+ } else {
+ rs->sr_err = LDAP_SUCCESS;
}
return candidate;
}
+static void *meta_back_candidates_dummy;
+
static void
-meta_back_candidate_keyfree(
+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 );
}
SlapReply *
meta_back_candidates_get( Operation *op )
{
- metainfo_t *mi = ( metainfo_t * )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 *)mi->mi_candidates;
+ mc = mi->mi_candidates;
}
- if ( data == NULL ) {
- data = ber_memalloc( sizeof( SlapReply ) * mi->mi_ntargets );
+ 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,
+ NULL, NULL );
} else {
- mi->mi_candidates = (SlapReply *)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_candidates = ch_realloc( mc->mc_candidates,
+ sizeof( SlapReply ) * mi->mi_ntargets );
+ memset( &mc->mc_candidates[ mc->mc_ntargets ], 0,
+ sizeof( SlapReply ) * ( mi->mi_ntargets - mc->mc_ntargets ) );
+ mc->mc_ntargets = mi->mi_ntargets;
}
- return (SlapReply *)data;
+ return mc->mc_candidates;
}
/*
ldap_back_send_t sendok )
{
metainfo_t *mi = ( metainfo_t * )op->o_bd->be_private;
- metaconn_t *mc, mc_curr;
+ metaconn_t *mc = NULL,
+ mc_curr = { 0 };
int cached = META_TARGET_NONE,
i = META_TARGET_NONE,
err = LDAP_SUCCESS,
meta_op_type op_type = META_OP_REQUIRE_SINGLE;
- int parent = 0,
- newparent = 0;
+ enum {
+ META_DNTYPE_ENTRY,
+ META_DNTYPE_PARENT,
+ META_DNTYPE_NEWPARENT
+ } dn_type = META_DNTYPE_ENTRY;
struct berval ndn = op->o_req_ndn,
pndn;
SlapReply *candidates = meta_back_candidates_get( op );
- /* Searches for a metaconn in the avl tree */
- mc_curr.mc_conn = op->o_conn;
- ldap_pvt_thread_mutex_lock( &mi->mi_conn_mutex );
- mc = (metaconn_t *)avl_find( mi->mi_conntree,
- (caddr_t)&mc_curr, meta_back_conn_cmp );
- ldap_pvt_thread_mutex_unlock( &mi->mi_conn_mutex );
+ /* Internal searches are privileged and shared. So is root. */
+ if ( ( !BER_BVISEMPTY( &op->o_ndn ) && META_BACK_PROXYAUTHZ_ALWAYS( mi ) )
+ || ( BER_BVISEMPTY( &op->o_ndn ) && META_BACK_PROXYAUTHZ_ANON( mi ) )
+ || op->o_do_not_cache || be_isroot( op ) )
+ {
+ LDAP_BACK_CONN_ISPRIV_SET( &mc_curr );
+ mc_curr.mc_local_ndn = op->o_bd->be_rootndn;
+ LDAP_BACK_PCONN_ROOTDN_SET( &mc_curr, op );
+
+ } else if ( BER_BVISEMPTY( &op->o_ndn ) && META_BACK_PROXYAUTHZ_NOANON( mi ) )
+ {
+ LDAP_BACK_CONN_ISANON_SET( &mc_curr );
+ BER_BVSTR( &mc_curr.mc_local_ndn, "" );
+ LDAP_BACK_PCONN_ANON_SET( &mc_curr, op );
+
+ } else {
+ mc_curr.mc_local_ndn = op->o_ndn;
+
+ /* Explicit binds must not be shared */
+ if ( !BER_BVISEMPTY( &op->o_ndn )
+ || op->o_tag == LDAP_REQ_BIND
+ || SLAP_IS_AUTHZ_BACKEND( op ) )
+ {
+ mc_curr.mc_conn = op->o_conn;
+
+ } else {
+ LDAP_BACK_CONN_ISANON_SET( &mc_curr );
+ LDAP_BACK_PCONN_ANON_SET( &mc_curr, op );
+ }
+ }
+
+ /* Explicit Bind requests always get their own conn */
+ if ( sendok & LDAP_BACK_BINDING ) {
+ mc_curr.mc_conn = op->o_conn;
+
+ } else {
+ /* Searches for a metaconn in the avl tree */
+retry_lock:;
+ ldap_pvt_thread_mutex_lock( &mi->mi_conninfo.lai_mutex );
+ 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 )
+ {
+ 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 );
+ LDAP_TAILQ_ENTRY_INIT( mc, mc_q );
+ LDAP_TAILQ_INSERT_TAIL( &mi->mi_conn_priv[ LDAP_BACK_CONN2PRIV( mc ) ].mic_priv,
+ mc, mc_q );
+ }
+
+ } 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
+ * NOTE: only makes sense for binds */
+ if ( LDAP_BACK_CONN_BINDING( mc ) ) {
+ if ( !LDAP_BACK_USE_TEMPORARIES( mi ) ) {
+ ldap_pvt_thread_mutex_unlock( &mi->mi_conninfo.lai_mutex );
+
+ 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--;
+ LDAP_TAILQ_ENTRY_INIT( mc, mc_q );
+
+ } 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 );
+ }
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;
+ dn_type = META_DNTYPE_PARENT;
dnParent( &ndn, &pndn );
break;
/* if nnewSuperior is not NULL, it must resolve
* to the same candidate as the req_ndn */
if ( op->orr_nnewSup ) {
- newparent = 1;
+ dn_type = META_DNTYPE_NEWPARENT;
}
break;
case LDAP_REQ_BIND:
/* if bound as rootdn, the backend must bind to all targets
- * with the administrative identity */
+ * with the administrative identity
+ * (unless pseoudoroot-bind-defer is TRUE) */
if ( op->orb_method == LDAP_AUTH_SIMPLE && be_isroot_pw( op ) ) {
op_type = META_OP_REQUIRE_ALL;
}
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 ( op_type == META_OP_REQUIRE_ALL ) {
/* Looks like we didn't get a bind. Open a new session... */
- if ( !mc ) {
+ if ( mc == NULL ) {
+ assert( new_conn == 0 );
mc = metaconn_alloc( op );
- mc->mc_conn = op->o_conn;
+ 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 );
+ }
+
+ } 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++ ) {
-
/*
* The target is activated; if needed, it is
* also init'd
*/
- int lerr = meta_back_init_one_conn( op, rs, &mi->mi_targets[ i ],
- &mc->mc_conns[ i ], sendok );
- if ( lerr == LDAP_SUCCESS ) {
- candidates[ i ].sr_tag = META_CANDIDATE;
+ candidates[ i ].sr_err = meta_back_init_one_conn( op,
+ rs, mc, i, LDAP_BACK_CONN_ISPRIV( &mc_curr ),
+ LDAP_BACK_DONTSEND, !new_conn );
+ if ( candidates[ i ].sr_err == LDAP_SUCCESS ) {
+ if ( new_conn && ( sendok & LDAP_BACK_BINDING ) ) {
+ LDAP_BACK_CONN_BINDING_SET( &mc->mc_conns[ i ] );
+ }
+ META_CANDIDATE_SET( &candidates[ i ] );
ncandidates++;
-
+
} else {
/*
* be init'd, should the other ones
* be tried?
*/
- candidates[ i ].sr_tag = META_NOT_CANDIDATE;
- err = lerr;
+ META_CANDIDATE_RESET( &candidates[ i ] );
+ err = candidates[ i ].sr_err;
continue;
}
}
+
+ if ( ncandidates == 0 ) {
+ if ( new_conn ) {
+ mc->mc_refcnt = 0;
+ meta_back_conn_free( mc );
+
+ } else {
+ meta_back_release_conn( mi, 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_matched = NULL;
+ }
+
+ return NULL;
+ }
+
goto done;
}
}
if ( op_type == META_OP_REQUIRE_SINGLE ) {
- int j;
+ metatarget_t *mt = NULL;
+ metasingleconn_t *msc = NULL;
+
+ int j;
for ( j = 0; j < mi->mi_ntargets; j++ ) {
- candidates[ j ].sr_tag = META_NOT_CANDIDATE;
+ META_CANDIDATE_RESET( &candidates[ j ] );
}
/*
if ( i == META_TARGET_NONE ) {
i = meta_back_get_candidate( op, rs, &ndn );
- if ( rs->sr_err == LDAP_NO_SUCH_OBJECT && parent ) {
+ if ( rs->sr_err == LDAP_NO_SUCH_OBJECT && dn_type == META_DNTYPE_PARENT ) {
i = meta_back_get_candidate( op, rs, &pndn );
}
- if ( rs->sr_err != LDAP_SUCCESS ) {
+ if ( i < 0 || rs->sr_err != LDAP_SUCCESS ) {
+ if ( mc != NULL ) {
+ meta_back_release_conn( mi, 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 ( dn_type == META_DNTYPE_NEWPARENT && meta_back_get_candidate( op, rs, op->orr_nnewSup ) != i )
{
+ if ( mc != NULL ) {
+ meta_back_release_conn( mi, mc );
+ }
+
rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
- rs->sr_text = "cross-target rename not supported";
+ 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_TRACE,
- "==>meta_back_getconn: got target %d for ndn=\"%s\" from cache\n",
+ "==>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 */
- mc_curr.mc_conn = op->o_conn;
- ldap_pvt_thread_mutex_lock( &mi->mi_conn_mutex );
- mc = (metaconn_t *)avl_find( mi->mi_conntree,
- (caddr_t)&mc_curr, meta_back_conn_cmp );
- ldap_pvt_thread_mutex_unlock( &mi->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 ) ) {
+retry_lock2:;
+ 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 != NULL ) {
+ /* catch taint errors */
+ assert( !LDAP_BACK_CONN_TAINTED( mc ) );
+
+ /* Don't reuse connections while they're still binding */
+ 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;
+ }
- /* Looks like we didn't get a bind. Open a new session... */
- if ( !mc ) {
- mc = metaconn_alloc( op );
- mc->mc_conn = op->o_conn;
- new_conn = 1;
+ mc = NULL;
+
+ } else {
+ 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 ( mc == NULL ) {
+ assert( new_conn == 0 );
+ 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 );
+ }
+ 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 );
+ }
+ }
}
/*
*/
( 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, meta_back_init_one_conn
* sends the appropriate result.
*/
- err = meta_back_init_one_conn( op, rs, &mi->mi_targets[ i ],
- &mc->mc_conns[ i ], sendok );
- if ( err == LDAP_SUCCESS ) {
- candidates[ i ].sr_tag = META_CANDIDATE;
- ncandidates++;
-
- } else {
-
+ err = meta_back_init_one_conn( op, rs, mc, i,
+ LDAP_BACK_CONN_ISPRIV( &mc_curr ), sendok, !new_conn );
+ if ( err != LDAP_SUCCESS ) {
/*
* FIXME: in case one target cannot
* be init'd, should the other ones
* be tried?
*/
- candidates[ i ].sr_tag = META_NOT_CANDIDATE;
+ META_CANDIDATE_RESET( &candidates[ i ] );
if ( new_conn ) {
- ( void )meta_clear_one_candidate( &mc->mc_conns[ i ] );
+ mc->mc_refcnt = 0;
meta_back_conn_free( mc );
+
+ } else {
+ meta_back_release_conn( mi, mc );
}
return NULL;
}
+ if ( new_conn && ( sendok & LDAP_BACK_BINDING ) ) {
+ LDAP_BACK_CONN_BINDING_SET( &mc->mc_conns[ i ] );
+ }
+
+ candidates[ i ].sr_err = LDAP_SUCCESS;
+ META_CANDIDATE_SET( &candidates[ i ] );
+ ncandidates++;
+
if ( candidate ) {
*candidate = i;
}
} else {
/* Looks like we didn't get a bind. Open a new session... */
- if ( !mc ) {
+ if ( mc == NULL ) {
+ assert( new_conn == 0 );
mc = metaconn_alloc( op );
- mc->mc_conn = op->o_conn;
+ mc->mc_conn = mc_curr.mc_conn;
+ ber_dupbv( &mc->mc_local_ndn, &mc_curr.mc_local_ndn );
new_conn = 1;
+ 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 ];
+
+ META_CANDIDATE_RESET( &candidates[ i ] );
+
if ( i == cached
- || meta_back_is_candidate( &mi->mi_targets[ i ].mt_nsuffix,
- &op->o_req_ndn, LDAP_SCOPE_SUBTREE ) )
+ || meta_back_is_candidate( mt, &op->o_req_ndn,
+ LDAP_SCOPE_SUBTREE ) )
{
/*
* The target is activated; if needed, it is
* also init'd
*/
- int lerr = meta_back_init_one_conn( op, rs,
- &mi->mi_targets[ i ],
- &mc->mc_conns[ i ], sendok );
+ int lerr = meta_back_init_one_conn( op, rs, mc, i,
+ LDAP_BACK_CONN_ISPRIV( &mc_curr ),
+ LDAP_BACK_DONTSEND, !new_conn );
+ candidates[ i ].sr_err = lerr;
if ( lerr == LDAP_SUCCESS ) {
- candidates[ i ].sr_tag = META_CANDIDATE;
+ META_CANDIDATE_SET( &candidates[ i ] );
ncandidates++;
- Debug( LDAP_DEBUG_TRACE, "%s: meta_back_init_one_conn(%d)\n",
+ 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 ] );
+
+ 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( &mc->mc_conns[ i ] );
+ ( void )meta_clear_one_candidate( op, mc, i );
}
- candidates[ i ].sr_tag = META_NOT_CANDIDATE;
+ /* leave the target candidate, but record the error for later use */
err = lerr;
- Debug( LDAP_DEBUG_ANY, "%s: meta_back_init_one_conn(%d) failed: %d\n",
- op->o_log_prefix, i, lerr );
+ if ( lerr == LDAP_UNAVAILABLE && mt->mt_isquarantined != LDAP_BACK_FQ_NO ) {
+ 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 err=%d\n",
+ op->o_log_prefix, i, lerr );
+ }
+
+ if ( META_BACK_ONERR_STOP( mi ) ) {
+ if ( sendok & LDAP_BACK_SENDERR ) {
+ send_ldap_result( op, rs );
+ }
+ if ( new_conn ) {
+ mc->mc_refcnt = 0;
+ meta_back_conn_free( mc );
+
+ } else {
+ meta_back_release_conn( mi, mc );
+ }
+
+ return NULL;
+ }
continue;
}
} else {
if ( new_conn ) {
- ( void )meta_clear_one_candidate( &mc->mc_conns[ i ] );
+ ( void )meta_clear_one_candidate( op, mc, i );
}
- candidates[ i ].sr_tag = META_NOT_CANDIDATE;
}
}
if ( ncandidates == 0 ) {
if ( new_conn ) {
+ mc->mc_refcnt = 0;
meta_back_conn_free( mc );
+
+ } else {
+ meta_back_release_conn( mi, 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 ) {
+ 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;
rs->sr_err = LDAP_SUCCESS;
rs->sr_text = NULL;
+ /* touch the timestamp */
+ if ( mi->mi_idle_timeout != 0 ) {
+ mc->mc_time = op->o_time;
+ }
+
if ( new_conn ) {
-
+ if ( mi->mi_conn_ttl ) {
+ mc->mc_create_time = op->o_time;
+ }
+
/*
* Inserts the newly created metaconn in the avl tree
*/
- ldap_pvt_thread_mutex_lock( &mi->mi_conn_mutex );
- err = avl_insert( &mi->mi_conntree, ( caddr_t )mc,
- meta_back_conn_cmp, meta_back_conn_dup );
+ ldap_pvt_thread_mutex_lock( &mi->mi_conninfo.lai_mutex );
+#if META_BACK_PRINT_CONNTREE > 0
+ meta_back_print_conntree( mi, ">>> meta_back_getconn" );
+#endif /* META_BACK_PRINT_CONNTREE */
+
+ err = 0;
+ 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 );
-#if PRINT_CONNTREE > 0
- myprint( mi->mi_conntree );
-#endif /* PRINT_CONNTREE */
-
- ldap_pvt_thread_mutex_unlock( &mi->mi_conn_mutex );
+ } else {
+ LDAP_BACK_CONN_TAINTED_SET( mc );
+ }
+ rs->sr_err = 0;
- /*
- * Err could be -1 in case a duplicate metaconn is inserted
- */
- if ( err == 0 ) {
- Debug( LDAP_DEBUG_TRACE,
- "%s meta_back_getconn: candidates=%d conn=%ld inserted\n",
- op->o_log_prefix, ncandidates, mc->mc_conn->c_connid );
+ } else if ( !( sendok & LDAP_BACK_BINDING ) ) {
+ 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 );
+ }
- } else {
- Debug( LDAP_DEBUG_ANY,
- "%s meta_back_getconn: candidates=%d conn=%ld insert failed\n",
- op->o_log_prefix, ncandidates, mc->mc_conn->c_connid );
-
- rs->sr_err = LDAP_OTHER;
- rs->sr_text = "Internal server error";
- meta_back_conn_free( mc );
- if ( sendok & LDAP_BACK_SENDERR ) {
- send_ldap_result( op, rs );
- rs->sr_text = NULL;
+#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 );
+
+ 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;
+ }
+
+ 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 );
+
+ rs->sr_err = LDAP_OTHER;
+ rs->sr_text = "Proxy bind collision";
+ if ( sendok & LDAP_BACK_SENDERR ) {
+ send_ldap_result( op, rs );
+ }
+ 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 ) );
+
} else {
Debug( LDAP_DEBUG_TRACE,
"%s meta_back_getconn: candidates=%d conn=%ld fetched\n",
- op->o_log_prefix, ncandidates, mc->mc_conn->c_connid );
+ op->o_log_prefix, ncandidates,
+ LDAP_BACK_PCONN_ID( mc ) );
}
-
+
return mc;
}
+void
+meta_back_release_conn_lock(
+ metainfo_t *mi,
+ metaconn_t *mc,
+ int dolock )
+{
+ assert( mc != NULL );
+
+ if ( dolock ) {
+ ldap_pvt_thread_mutex_lock( &mi->mi_conninfo.lai_mutex );
+ }
+ assert( mc->mc_refcnt > 0 );
+ mc->mc_refcnt--;
+ /* 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 ) || !LDAP_BACK_CONN_CACHED( 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 );
+ 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--;
+ LDAP_TAILQ_ENTRY_INIT( mc, mc_q );
+
+ } else {
+ assert( !LDAP_BACK_CONN_CACHED( mc ) );
+ }
+
+ } else if ( LDAP_BACK_CONN_CACHED( mc ) ) {
+ metaconn_t *tmpmc;
+
+ tmpmc = avl_delete( &mi->mi_conninfo.lai_tree,
+ ( caddr_t )mc, meta_back_conndnmc_cmp );
+
+ /* Overparanoid, but useful... */
+ assert( tmpmc == NULL || 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 );
+ }
+}
+
+void
+meta_back_quarantine(
+ Operation *op,
+ SlapReply *rs,
+ int candidate )
+{
+ metainfo_t *mi = (metainfo_t *)op->o_bd->be_private;
+ metatarget_t *mt = mi->mi_targets[ candidate ];
+
+ slap_retry_info_t *ri = &mt->mt_quarantine;
+
+ ldap_pvt_thread_mutex_lock( &mt->mt_quarantine_mutex );
+
+ if ( rs->sr_err == LDAP_UNAVAILABLE ) {
+ time_t new_last = slap_get_time();
+
+ switch ( mt->mt_isquarantined ) {
+ case LDAP_BACK_FQ_NO:
+ if ( ri->ri_last == new_last ) {
+ goto done;
+ }
+
+ Debug( LDAP_DEBUG_ANY,
+ "%s meta_back_quarantine[%d]: enter.\n",
+ op->o_log_prefix, candidate, 0 );
+
+ ri->ri_idx = 0;
+ ri->ri_count = 0;
+ break;
+
+ case LDAP_BACK_FQ_RETRYING:
+ if ( LogTest( LDAP_DEBUG_ANY ) ) {
+ char buf[ SLAP_TEXT_BUFLEN ];
+
+ snprintf( buf, sizeof( buf ),
+ "meta_back_quarantine[%d]: block #%d try #%d failed",
+ candidate, ri->ri_idx, ri->ri_count );
+ Debug( LDAP_DEBUG_ANY, "%s %s.\n",
+ op->o_log_prefix, buf, 0 );
+ }
+
+ ++ri->ri_count;
+ if ( ri->ri_num[ ri->ri_idx ] != SLAP_RETRYNUM_FOREVER
+ && ri->ri_count == ri->ri_num[ ri->ri_idx ] )
+ {
+ ri->ri_count = 0;
+ ++ri->ri_idx;
+ }
+ break;
+
+ default:
+ break;
+ }
+
+ mt->mt_isquarantined = LDAP_BACK_FQ_YES;
+ ri->ri_last = new_last;
+
+ } else if ( mt->mt_isquarantined == LDAP_BACK_FQ_RETRYING ) {
+ Debug( LDAP_DEBUG_ANY,
+ "%s meta_back_quarantine[%d]: exit.\n",
+ op->o_log_prefix, candidate, 0 );
+
+ if ( mi->mi_quarantine_f ) {
+ (void)mi->mi_quarantine_f( mi, candidate,
+ mi->mi_quarantine_p );
+ }
+
+ ri->ri_count = 0;
+ ri->ri_idx = 0;
+ mt->mt_isquarantined = LDAP_BACK_FQ_NO;
+ }
+
+done:;
+ ldap_pvt_thread_mutex_unlock( &mt->mt_quarantine_mutex );
+}
+
projects / openldap / blobdiff