/* $OpenLDAP$ */
/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
*
- * Copyright 1999-2004 The OpenLDAP Foundation.
+ * Copyright 1999-2008 The OpenLDAP Foundation.
* Portions Copyright 2000-2003 Pierangelo Masarati.
* Portions Copyright 1999-2003 Howard Chu.
* All rights reserved.
* <http://www.OpenLDAP.org/license.html>.
*/
/* ACKNOWLEDGEMENTS:
- * This work was initially developed by the Howard Chu for inclusion
+ * This work was initially developed by Howard Chu for inclusion
* in OpenLDAP Software and subsequently enhanced by Pierangelo
* Masarati.
*/
#include <stdio.h>
+#include <ac/errno.h>
#include <ac/socket.h>
#include <ac/string.h>
#define AVL_INTERNAL
#include "slap.h"
#include "back-ldap.h"
+#undef ldap_debug /* silence a warning in ldap-int.h */
+#include "../../../libraries/libldap/ldap-int.h"
-#include <lutil_ldap.h>
+#include "lutil_ldap.h"
-#define PRINT_CONNTREE 0
+#define LDAP_CONTROL_OBSOLETE_PROXY_AUTHZ "2.16.840.1.113730.3.4.12"
-static LDAP_REBIND_PROC ldap_back_rebind;
+#if LDAP_BACK_PRINT_CONNTREE > 0
+static void
+ldap_back_ravl_print( Avlnode *root, int depth )
+{
+ int i;
+ ldapconn_t *lc;
+
+ if ( root == 0 ) {
+ return;
+ }
+
+ ldap_back_ravl_print( root->avl_right, depth+1 );
+
+ for ( i = 0; i < depth; i++ ) {
+ fprintf( stderr, "-" );
+ }
+
+ lc = root->avl_data;
+ fprintf( stderr, "lc=%p local=\"%s\" conn=%p %s refcnt=%d flags=0x%08x\n",
+ (void *)lc,
+ lc->lc_local_ndn.bv_val ? lc->lc_local_ndn.bv_val : "",
+ (void *)lc->lc_conn,
+ avl_bf2str( root->avl_bf ), lc->lc_refcnt, lc->lc_lcflags );
+
+ ldap_back_ravl_print( root->avl_left, depth+1 );
+}
+
+static char* priv2str[] = {
+ "privileged",
+ "privileged/TLS",
+ "anonymous",
+ "anonymous/TLS",
+ "bind",
+ "bind/TLS",
+ NULL
+};
+
+void
+ldap_back_print_conntree( ldapinfo_t *li, char *msg )
+{
+ int c;
+
+ fprintf( stderr, "========> %s\n", msg );
+
+ for ( c = LDAP_BACK_PCONN_FIRST; c < LDAP_BACK_PCONN_LAST; c++ ) {
+ int i = 0;
+ ldapconn_t *lc;
+
+ fprintf( stderr, " %s[%d]\n", priv2str[ c ], li->li_conn_priv[ c ].lic_num );
+
+ LDAP_TAILQ_FOREACH( lc, &li->li_conn_priv[ c ].lic_priv, lc_q )
+ {
+ fprintf( stderr, " [%d] lc=%p local=\"%s\" conn=%p refcnt=%d flags=0x%08x\n",
+ i,
+ (void *)lc,
+ lc->lc_local_ndn.bv_val ? lc->lc_local_ndn.bv_val : "",
+ (void *)lc->lc_conn, lc->lc_refcnt, lc->lc_lcflags );
+ i++;
+ }
+ }
+
+ if ( li->li_conninfo.lai_tree == 0 ) {
+ fprintf( stderr, "\t(empty)\n" );
+
+ } else {
+ ldap_back_ravl_print( li->li_conninfo.lai_tree, 0 );
+ }
+
+ fprintf( stderr, "<======== %s\n", msg );
+}
+#endif /* LDAP_BACK_PRINT_CONNTREE */
+
+static int
+ldap_back_freeconn( ldapinfo_t *li, ldapconn_t *lc, int dolock );
+
+static ldapconn_t *
+ldap_back_getconn( Operation *op, SlapReply *rs, ldap_back_send_t sendok,
+ struct berval *binddn, struct berval *bindcred );
+
+static int
+ldap_back_is_proxy_authz( Operation *op, SlapReply *rs, ldap_back_send_t sendok,
+ struct berval *binddn, struct berval *bindcred );
+
+static int
+ldap_back_proxy_authz_bind( ldapconn_t *lc, Operation *op, SlapReply *rs,
+ ldap_back_send_t sendok, struct berval *binddn, struct berval *bindcred );
+
+static int
+ldap_back_prepare_conn( ldapconn_t *lc, Operation *op, SlapReply *rs,
+ ldap_back_send_t sendok );
+
+static int
+ldap_back_conndnlc_cmp( const void *c1, const void *c2 );
+
+ldapconn_t *
+ldap_back_conn_delete( ldapinfo_t *li, ldapconn_t *lc )
+{
+ if ( LDAP_BACK_PCONN_ISPRIV( lc ) ) {
+ if ( LDAP_BACK_CONN_CACHED( lc ) ) {
+ assert( lc->lc_q.tqe_prev != NULL );
+ assert( li->li_conn_priv[ LDAP_BACK_CONN2PRIV( lc ) ].lic_num > 0 );
+ li->li_conn_priv[ LDAP_BACK_CONN2PRIV( lc ) ].lic_num--;
+ LDAP_TAILQ_REMOVE( &li->li_conn_priv[ LDAP_BACK_CONN2PRIV( lc ) ].lic_priv, lc, lc_q );
+ LDAP_TAILQ_ENTRY_INIT( lc, lc_q );
+ LDAP_BACK_CONN_CACHED_CLEAR( lc );
+
+ } else {
+ assert( LDAP_BACK_CONN_TAINTED( lc ) );
+ assert( lc->lc_q.tqe_prev == NULL );
+ }
+
+ } else {
+ ldapconn_t *tmplc = NULL;
+
+ if ( LDAP_BACK_CONN_CACHED( lc ) ) {
+ assert( !LDAP_BACK_CONN_TAINTED( lc ) );
+ tmplc = avl_delete( &li->li_conninfo.lai_tree, (caddr_t)lc,
+ ldap_back_conndnlc_cmp );
+ assert( tmplc == lc );
+ LDAP_BACK_CONN_CACHED_CLEAR( lc );
+ }
+
+ assert( LDAP_BACK_CONN_TAINTED( lc ) || tmplc == lc );
+ }
+
+ return lc;
+}
int
-ldap_back_bind(
- Operation *op,
- SlapReply *rs )
+ldap_back_bind( Operation *op, SlapReply *rs )
{
- struct ldapinfo *li = (struct ldapinfo *) op->o_bd->be_private;
- struct ldapconn *lc;
+ ldapinfo_t *li = (ldapinfo_t *) op->o_bd->be_private;
+ ldapconn_t *lc;
- struct berval mdn = BER_BVNULL;
- int rc = 0;
- ber_int_t msgid;
- dncookie dc;
+ int rc = 0;
+ ber_int_t msgid;
+ ldap_back_send_t retrying = LDAP_BACK_RETRYING;
- lc = ldap_back_getconn(op, rs);
+ lc = ldap_back_getconn( op, rs, LDAP_BACK_BIND_SERR, NULL, NULL );
if ( !lc ) {
- return( -1 );
+ return rs->sr_err;
}
- /*
- * Rewrite the bind dn if needed
- */
- dc.rwmap = &li->rwmap;
-#ifdef ENABLE_REWRITE
- dc.conn = op->o_conn;
- dc.rs = rs;
- dc.ctx = "bindDN";
-#else
- dc.tofrom = 1;
- dc.normalized = 0;
-#endif
- if ( ldap_back_dn_massage( &dc, &op->o_req_dn, &mdn ) ) {
- send_ldap_result( op, rs );
- return -1;
+ /* we can do (almost) whatever we want with this conn,
+ * because either it's temporary, or it's marked as binding */
+ if ( !BER_BVISNULL( &lc->lc_bound_ndn ) ) {
+ ch_free( lc->lc_bound_ndn.bv_val );
+ BER_BVZERO( &lc->lc_bound_ndn );
}
-
- if ( !BER_BVISNULL( &lc->bound_dn ) ) {
- ch_free( lc->bound_dn.bv_val );
- BER_BVZERO( &lc->bound_dn );
+ if ( !BER_BVISNULL( &lc->lc_cred ) ) {
+ memset( lc->lc_cred.bv_val, 0, lc->lc_cred.bv_len );
+ ch_free( lc->lc_cred.bv_val );
+ BER_BVZERO( &lc->lc_cred );
}
- lc->bound = 0;
+ LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
+
+retry:;
/* method is always LDAP_AUTH_SIMPLE if we got here */
- rs->sr_err = ldap_sasl_bind(lc->ld, mdn.bv_val, LDAP_SASL_SIMPLE,
- &op->oq_bind.rb_cred, op->o_ctrls, NULL, &msgid);
- rc = ldap_back_op_result( lc, op, rs, msgid, 1 );
- if (rc == LDAP_SUCCESS) {
- lc->bound = 1;
- if ( mdn.bv_val != op->o_req_dn.bv_val ) {
- lc->bound_dn = mdn;
- } else {
- ber_dupbv( &lc->bound_dn, &op->o_req_dn );
+ rs->sr_err = ldap_sasl_bind( lc->lc_ld, op->o_req_dn.bv_val,
+ LDAP_SASL_SIMPLE,
+ &op->orb_cred, op->o_ctrls, NULL, &msgid );
+ /* FIXME: should we always retry, or only when piping the bind
+ * in the "override" connection pool? */
+ rc = ldap_back_op_result( lc, op, rs, msgid,
+ li->li_timeout[ SLAP_OP_BIND ],
+ LDAP_BACK_BIND_SERR | retrying );
+ if ( rc == LDAP_UNAVAILABLE && retrying ) {
+ retrying &= ~LDAP_BACK_RETRYING;
+ if ( ldap_back_retry( &lc, op, rs, LDAP_BACK_BIND_SERR ) ) {
+ goto retry;
}
- BER_BVZERO( &mdn );
+ }
- if ( li->savecred ) {
- if ( !BER_BVISNULL( &lc->cred ) ) {
- memset( lc->cred.bv_val, 0, lc->cred.bv_len );
- ch_free( lc->cred.bv_val );
- }
- ber_dupbv( &lc->cred, &op->oq_bind.rb_cred );
- ldap_set_rebind_proc( lc->ld, ldap_back_rebind, lc );
+ if ( rc == LDAP_SUCCESS ) {
+ /* If defined, proxyAuthz will be used also when
+ * back-ldap is the authorizing backend; for this
+ * purpose, after a successful bind the connection
+ * is left for further binds, and further operations
+ * on this client connection will use a default
+ * connection with identity assertion */
+ /* NOTE: use with care */
+ if ( li->li_idassert_flags & LDAP_BACK_AUTH_OVERRIDE ) {
+ ldap_back_release_conn( li, lc );
+ return( rc );
+ }
+
+ /* rebind is now done inside ldap_back_proxy_authz_bind()
+ * in case of success */
+ LDAP_BACK_CONN_ISBOUND_SET( lc );
+ ber_dupbv( &lc->lc_bound_ndn, &op->o_req_ndn );
+
+ if ( !BER_BVISNULL( &lc->lc_cred ) ) {
+ memset( lc->lc_cred.bv_val, 0,
+ lc->lc_cred.bv_len );
+ }
+
+ if ( LDAP_BACK_SAVECRED( li ) ) {
+ ber_bvreplace( &lc->lc_cred, &op->orb_cred );
+ ldap_set_rebind_proc( lc->lc_ld, li->li_rebind_f, lc );
+
+ } else {
+ lc->lc_cred.bv_len = 0;
}
}
/* must re-insert if local DN changed as result of bind */
- if ( lc->bound && !bvmatch(&op->o_req_ndn, &lc->local_dn ) ) {
- int lerr;
-
- ldap_pvt_thread_mutex_lock( &li->conn_mutex );
- lc = avl_delete( &li->conntree, (caddr_t)lc,
- ldap_back_conn_cmp );
- if ( !BER_BVISNULL( &lc->local_dn ) )
- ch_free( lc->local_dn.bv_val );
- ber_dupbv( &lc->local_dn, &op->o_req_ndn );
- lerr = avl_insert( &li->conntree, (caddr_t)lc,
- ldap_back_conn_cmp, ldap_back_conn_dup );
- ldap_pvt_thread_mutex_unlock( &li->conn_mutex );
- if ( lerr == -1 ) {
+ if ( !LDAP_BACK_CONN_ISBOUND( lc )
+ || ( !dn_match( &op->o_req_ndn, &lc->lc_local_ndn )
+ && !LDAP_BACK_PCONN_ISPRIV( lc ) ) )
+ {
+ int lerr = -1;
+ ldapconn_t *tmplc;
+
+ /* wait for all other ops to release the connection */
+retry_lock:;
+ ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
+ if ( lc->lc_refcnt > 1 ) {
+ ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
+ ldap_pvt_thread_yield();
+ goto retry_lock;
+ }
+
+#if LDAP_BACK_PRINT_CONNTREE > 0
+ ldap_back_print_conntree( li, ">>> ldap_back_bind" );
+#endif /* LDAP_BACK_PRINT_CONNTREE */
+
+ assert( lc->lc_refcnt == 1 );
+ ldap_back_conn_delete( li, lc );
+
+ /* delete all cached connections with the current connection */
+ if ( LDAP_BACK_SINGLECONN( li ) ) {
+ while ( ( tmplc = avl_delete( &li->li_conninfo.lai_tree, (caddr_t)lc, ldap_back_conn_cmp ) ) != NULL )
+ {
+ Debug( LDAP_DEBUG_TRACE,
+ "=>ldap_back_bind: destroying conn %ld (refcnt=%u)\n",
+ LDAP_BACK_PCONN_ID( lc ), lc->lc_refcnt, 0 );
+
+ if ( tmplc->lc_refcnt != 0 ) {
+ /* taint it */
+ LDAP_BACK_CONN_TAINTED_SET( tmplc );
+ LDAP_BACK_CONN_CACHED_CLEAR( tmplc );
+
+ } else {
+ /*
+ * Needs a test because the handler may be corrupted,
+ * and calling ldap_unbind on a corrupted header results
+ * in a segmentation fault
+ */
+ ldap_back_conn_free( tmplc );
+ }
+ }
+ }
+
+ if ( LDAP_BACK_CONN_ISBOUND( lc ) ) {
+ ber_bvreplace( &lc->lc_local_ndn, &op->o_req_ndn );
+ if ( be_isroot_dn( op->o_bd, &op->o_req_ndn ) ) {
+ LDAP_BACK_PCONN_ROOTDN_SET( lc, op );
+ }
+ lerr = avl_insert( &li->li_conninfo.lai_tree, (caddr_t)lc,
+ ldap_back_conndn_cmp, ldap_back_conndn_dup );
+ }
+
+#if LDAP_BACK_PRINT_CONNTREE > 0
+ ldap_back_print_conntree( li, "<<< ldap_back_bind" );
+#endif /* LDAP_BACK_PRINT_CONNTREE */
+
+ ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
+ switch ( lerr ) {
+ case 0:
+ LDAP_BACK_CONN_CACHED_SET( lc );
+ break;
+
+ case -1:
+ /* duplicate; someone else successfully bound
+ * on the same connection with the same identity;
+ * we can do this because lc_refcnt == 1 */
ldap_back_conn_free( lc );
+ lc = NULL;
}
}
- if ( !BER_BVISNULL( &mdn ) && mdn.bv_val != op->o_req_dn.bv_val ) {
- free( mdn.bv_val );
+ if ( lc != NULL ) {
+ ldap_back_release_conn( li, lc );
}
return( rc );
}
/*
- * ldap_back_conn_cmp
+ * ldap_back_conndn_cmp
*
- * compares two struct ldapconn based on the value of the conn pointer;
- * used by avl stuff
+ * compares two ldapconn_t based on the value of the conn pointer
+ * and of the local DN; used by avl stuff for insert, lookup
+ * and direct delete
*/
int
-ldap_back_conn_cmp(
- const void *c1,
- const void *c2
- )
+ldap_back_conndn_cmp( const void *c1, const void *c2 )
{
- const struct ldapconn *lc1 = (const struct ldapconn *)c1;
- const struct ldapconn *lc2 = (const struct ldapconn *)c2;
+ const ldapconn_t *lc1 = (const ldapconn_t *)c1;
+ const ldapconn_t *lc2 = (const ldapconn_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( lc1->lc_conn, lc2->lc_conn );
+ if ( rc == 0 ) {
+ rc = ber_bvcmp( &lc1->lc_local_ndn, &lc2->lc_local_ndn );
+ }
+
+ return rc;
+}
+
+/*
+ * ldap_back_conndnlc_cmp
+ *
+ * compares two ldapconn_t based on the value of the conn pointer,
+ * the local DN and the lc pointer; used by avl stuff for insert, lookup
+ * and direct delete
+ */
+static int
+ldap_back_conndnlc_cmp( const void *c1, const void *c2 )
+{
+ const ldapconn_t *lc1 = (const ldapconn_t *)c1;
+ const ldapconn_t *lc2 = (const ldapconn_t *)c2;
+ int rc;
+
/* If local DNs don't match, it is definitely not a match */
- if ( ( rc = ber_bvcmp( &lc1->local_dn, &lc2->local_dn ) ) )
- return rc;
+ /* For shared sessions, conn is NULL. Only explicitly
+ * bound sessions will have non-NULL conn.
+ */
+ rc = SLAP_PTRCMP( lc1->lc_conn, lc2->lc_conn );
+ if ( rc == 0 ) {
+ rc = ber_bvcmp( &lc1->lc_local_ndn, &lc2->lc_local_ndn );
+ if ( rc == 0 ) {
+ rc = SLAP_PTRCMP( lc1, lc2 );
+ }
+ }
+
+ return rc;
+}
+
+/*
+ * ldap_back_conn_cmp
+ *
+ * compares two ldapconn_t based on the value of the conn pointer;
+ * used by avl stuff for delete of all conns with the same connid
+ */
+int
+ldap_back_conn_cmp( const void *c1, const void *c2 )
+{
+ const ldapconn_t *lc1 = (const ldapconn_t *)c1;
+ const ldapconn_t *lc2 = (const ldapconn_t *)c2;
/* For shared sessions, conn is NULL. Only explicitly
* bound sessions will have non-NULL conn.
*/
- return SLAP_PTRCMP(lc1->conn, lc2->conn);
+ return SLAP_PTRCMP( lc1->lc_conn, lc2->lc_conn );
}
/*
- * ldap_back_conn_dup
+ * ldap_back_conndn_dup
*
- * returns -1 in case a duplicate struct ldapconn has been inserted;
+ * returns -1 in case a duplicate ldapconn_t has been inserted;
* used by avl stuff
*/
int
-ldap_back_conn_dup(
- void *c1,
- void *c2
- )
+ldap_back_conndn_dup( void *c1, void *c2 )
{
- struct ldapconn *lc1 = (struct ldapconn *)c1;
- struct ldapconn *lc2 = (struct ldapconn *)c2;
+ ldapconn_t *lc1 = (ldapconn_t *)c1;
+ ldapconn_t *lc2 = (ldapconn_t *)c2;
/* Cannot have more than one shared session with same DN */
- if ( dn_match( &lc1->local_dn, &lc2->local_dn ) &&
- lc1->conn == lc2->conn ) return -1;
+ if ( lc1->lc_conn == lc2->lc_conn &&
+ dn_match( &lc1->lc_local_ndn, &lc2->lc_local_ndn ) )
+ {
+ return -1;
+ }
return 0;
}
-#if PRINT_CONNTREE > 0
-static void ravl_print( Avlnode *root, int depth )
+static int
+ldap_back_freeconn( ldapinfo_t *li, ldapconn_t *lc, int dolock )
{
- int i;
- struct ldapconn *lc;
-
- if ( root == 0 )
- return;
-
- ravl_print( root->avl_right, depth+1 );
-
- for ( i = 0; i < depth; i++ )
- printf( " " );
+ if ( dolock ) {
+ ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
+ }
- lc = root->avl_data;
- printf( "lc(%lx) local(%s) conn(%lx) %d\n",
- lc, lc->local_dn.bv_val, lc->conn, root->avl_bf );
-
- ravl_print( root->avl_left, depth+1 );
+#if LDAP_BACK_PRINT_CONNTREE > 0
+ ldap_back_print_conntree( li, ">>> ldap_back_freeconn" );
+#endif /* LDAP_BACK_PRINT_CONNTREE */
+
+ (void)ldap_back_conn_delete( li, lc );
+
+ if ( lc->lc_refcnt == 0 ) {
+ ldap_back_conn_free( (void *)lc );
+ }
+
+#if LDAP_BACK_PRINT_CONNTREE > 0
+ ldap_back_print_conntree( li, "<<< ldap_back_freeconn" );
+#endif /* LDAP_BACK_PRINT_CONNTREE */
+
+ if ( dolock ) {
+ ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
+ }
+
+ return 0;
}
-static void myprint( Avlnode *root )
+#ifdef HAVE_TLS
+static int
+ldap_back_start_tls(
+ LDAP *ld,
+ int protocol,
+ int *is_tls,
+ const char *url,
+ unsigned flags,
+ int retries,
+ const char **text )
{
- printf( "********\n" );
-
- if ( root == 0 )
- printf( "\tNULL\n" );
+ int rc = LDAP_SUCCESS;
- else
- ravl_print( root, 0 );
-
- printf( "********\n" );
+ /* start TLS ("tls-[try-]{start,propagate}" statements) */
+ if ( ( LDAP_BACK_USE_TLS_F( flags ) || ( *is_tls && LDAP_BACK_PROPAGATE_TLS_F( flags ) ) )
+ && !ldap_is_ldaps_url( url ) )
+ {
+#ifdef SLAP_STARTTLS_ASYNCHRONOUS
+ /*
+ * use asynchronous StartTLS
+ * in case, chase referral (not implemented yet)
+ */
+ int msgid;
+
+ if ( protocol == 0 ) {
+ ldap_get_option( ld, LDAP_OPT_PROTOCOL_VERSION,
+ (void *)&protocol );
+ }
+
+ if ( protocol < LDAP_VERSION3 ) {
+ /* we should rather bail out... */
+ rc = LDAP_UNWILLING_TO_PERFORM;
+ *text = "invalid protocol version";
+ }
+
+ if ( rc == LDAP_SUCCESS ) {
+ rc = ldap_start_tls( ld, NULL, NULL, &msgid );
+ }
+
+ if ( rc == LDAP_SUCCESS ) {
+ LDAPMessage *res = NULL;
+ struct timeval tv;
+
+ LDAP_BACK_TV_SET( &tv );
+
+retry:;
+ rc = ldap_result( ld, msgid, LDAP_MSG_ALL, &tv, &res );
+ if ( rc < 0 ) {
+ rc = LDAP_UNAVAILABLE;
+
+ } else if ( rc == 0 ) {
+ if ( retries != LDAP_BACK_RETRY_NEVER ) {
+ ldap_pvt_thread_yield();
+ if ( retries > 0 ) {
+ retries--;
+ }
+ LDAP_BACK_TV_SET( &tv );
+ goto retry;
+ }
+ rc = LDAP_UNAVAILABLE;
+
+ } else if ( rc == LDAP_RES_EXTENDED ) {
+ struct berval *data = NULL;
+
+ rc = ldap_parse_extended_result( ld, res,
+ NULL, &data, 0 );
+ if ( rc == LDAP_SUCCESS ) {
+ int err;
+ rc = ldap_parse_result( ld, res, &err,
+ NULL, NULL, NULL, NULL, 1 );
+ if ( rc == LDAP_SUCCESS ) {
+ rc = err;
+ }
+ res = NULL;
+
+ /* FIXME: in case a referral
+ * is returned, should we try
+ * using it instead of the
+ * configured URI? */
+ if ( rc == LDAP_SUCCESS ) {
+ rc = ldap_install_tls( ld );
+
+ } else if ( rc == LDAP_REFERRAL ) {
+ rc = LDAP_UNWILLING_TO_PERFORM;
+ *text = "unwilling to chase referral returned by Start TLS exop";
+ }
+
+ if ( data ) {
+ if ( data->bv_val ) {
+ ber_memfree( data->bv_val );
+ }
+ ber_memfree( data );
+ }
+ }
+
+ } else {
+ rc = LDAP_OTHER;
+ }
+
+ if ( res != NULL ) {
+ ldap_msgfree( res );
+ }
+ }
+#else /* ! SLAP_STARTTLS_ASYNCHRONOUS */
+ /*
+ * use synchronous StartTLS
+ */
+ rc = ldap_start_tls_s( ld, NULL, NULL );
+#endif /* ! SLAP_STARTTLS_ASYNCHRONOUS */
+
+ /* if StartTLS is requested, only attempt it if the URL
+ * is not "ldaps://"; this may occur not only in case
+ * of misconfiguration, but also when used in the chain
+ * overlay, where the "uri" can be parsed out of a referral */
+ switch ( rc ) {
+ case LDAP_SUCCESS:
+ *is_tls = 1;
+ break;
+
+ case LDAP_SERVER_DOWN:
+ break;
+
+ default:
+ if ( LDAP_BACK_TLS_CRITICAL_F( flags ) ) {
+ *text = "could not start TLS";
+ break;
+ }
+
+ /* in case Start TLS is not critical */
+ *is_tls = 0;
+ rc = LDAP_SUCCESS;
+ break;
+ }
+
+ } else {
+ *is_tls = 0;
+ }
+
+ return rc;
}
-#endif /* PRINT_CONNTREE */
+#endif /* HAVE_TLS */
-int
-ldap_back_freeconn( Operation *op, struct ldapconn *lc )
+static int
+ldap_back_prepare_conn( ldapconn_t *lc, Operation *op, SlapReply *rs, ldap_back_send_t sendok )
+{
+ ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
+ int version;
+ LDAP *ld = NULL;
+#ifdef HAVE_TLS
+ int is_tls = op->o_conn->c_is_tls;
+ time_t lc_time = (time_t)(-1);
+#endif /* HAVE_TLS */
+
+ ldap_pvt_thread_mutex_lock( &li->li_uri_mutex );
+ rs->sr_err = ldap_initialize( &ld, li->li_uri );
+ ldap_pvt_thread_mutex_unlock( &li->li_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.
+ */
+ if ( li->li_version != 0 ) {
+ version = li->li_version;
+
+ } else if ( op->o_protocol != 0 ) {
+ version = op->o_protocol;
+
+ } else {
+ /* assume it's an internal op; set to LDAPv3 */
+ version = LDAP_VERSION3;
+ }
+ ldap_set_option( ld, LDAP_OPT_PROTOCOL_VERSION, (const void *)&version );
+
+ /* automatically chase referrals ("chase-referrals [{yes|no}]" statement) */
+ ldap_set_option( ld, LDAP_OPT_REFERRALS,
+ LDAP_BACK_CHASE_REFERRALS( li ) ? LDAP_OPT_ON : LDAP_OPT_OFF );
+
+ if ( li->li_network_timeout > 0 ) {
+ struct timeval tv;
+
+ tv.tv_sec = li->li_network_timeout;
+ tv.tv_usec = 0;
+ ldap_set_option( ld, LDAP_OPT_NETWORK_TIMEOUT, (const void *)&tv );
+ }
+
+#ifdef HAVE_TLS
+ ldap_pvt_thread_mutex_lock( &li->li_uri_mutex );
+ rs->sr_err = ldap_back_start_tls( ld, op->o_protocol, &is_tls,
+ li->li_uri, li->li_flags, li->li_nretries, &rs->sr_text );
+ ldap_pvt_thread_mutex_unlock( &li->li_uri_mutex );
+ if ( rs->sr_err != LDAP_SUCCESS ) {
+ ldap_unbind_ext( ld, NULL, NULL );
+ rs->sr_text = "Start TLS failed";
+ goto error_return;
+
+ } else if ( li->li_idle_timeout ) {
+ /* only touch when activity actually took place... */
+ lc_time = op->o_time;
+ }
+#endif /* HAVE_TLS */
+
+ lc->lc_ld = ld;
+ lc->lc_refcnt = 1;
+#ifdef HAVE_TLS
+ if ( is_tls ) {
+ LDAP_BACK_CONN_ISTLS_SET( lc );
+ } else {
+ LDAP_BACK_CONN_ISTLS_CLEAR( lc );
+ }
+ if ( lc_time != (time_t)(-1) ) {
+ lc->lc_time = lc_time;
+ }
+#endif /* HAVE_TLS */
+
+error_return:;
+ if ( rs->sr_err != LDAP_SUCCESS ) {
+ rs->sr_err = slap_map_api2result( rs );
+ if ( sendok & LDAP_BACK_SENDERR ) {
+ if ( rs->sr_text == NULL ) {
+ rs->sr_text = "Proxy connection initialization failed";
+ }
+ send_ldap_result( op, rs );
+ }
+
+ } else {
+ if ( li->li_conn_ttl > 0 ) {
+ lc->lc_create_time = op->o_time;
+ }
+ }
+
+ return rs->sr_err;
+}
+
+static ldapconn_t *
+ldap_back_getconn(
+ Operation *op,
+ SlapReply *rs,
+ ldap_back_send_t sendok,
+ struct berval *binddn,
+ struct berval *bindcred )
{
- struct ldapinfo *li = (struct ldapinfo *) op->o_bd->be_private;
+ ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
+ ldapconn_t *lc = NULL,
+ lc_curr = { 0 };
+ int refcnt = 1,
+ lookupconn = !( sendok & LDAP_BACK_BINDING );
+
+ /* 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 ( li->li_isquarantined ) {
+ slap_retry_info_t *ri = &li->li_quarantine;
+ int dont_retry = 1;
+
+ if ( li->li_quarantine.ri_interval ) {
+ ldap_pvt_thread_mutex_lock( &li->li_quarantine_mutex );
+ if ( li->li_isquarantined == LDAP_BACK_FQ_YES ) {
+ 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 ) {
+ Debug( LDAP_DEBUG_ANY,
+ "%s: ldap_back_getconn quarantine "
+ "retry block #%d try #%d.\n",
+ op->o_log_prefix, ri->ri_idx, ri->ri_count );
+ li->li_isquarantined = LDAP_BACK_FQ_RETRYING;
+ }
+ }
+ ldap_pvt_thread_mutex_unlock( &li->li_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 NULL;
+ }
+ }
+
+ /* Internal searches are privileged and shared. So is root. */
+ if ( op->o_do_not_cache || be_isroot( op ) ) {
+ LDAP_BACK_CONN_ISPRIV_SET( &lc_curr );
+ lc_curr.lc_local_ndn = op->o_bd->be_rootndn;
+ LDAP_BACK_PCONN_ROOTDN_SET( &lc_curr, op );
+
+ } else {
+ struct berval tmpbinddn,
+ tmpbindcred,
+ save_o_dn,
+ save_o_ndn;
+ int isproxyauthz;
+
+ /* need cleanup */
+ if ( binddn == NULL ) {
+ binddn = &tmpbinddn;
+ }
+ if ( bindcred == NULL ) {
+ bindcred = &tmpbindcred;
+ }
+ if ( op->o_tag == LDAP_REQ_BIND ) {
+ save_o_dn = op->o_dn;
+ save_o_ndn = op->o_ndn;
+ op->o_dn = op->o_req_dn;
+ op->o_ndn = op->o_req_ndn;
+ }
+ isproxyauthz = ldap_back_is_proxy_authz( op, rs, sendok, binddn, bindcred );
+ if ( op->o_tag == LDAP_REQ_BIND ) {
+ op->o_dn = save_o_dn;
+ op->o_ndn = save_o_ndn;
+ }
+ if ( isproxyauthz == -1 ) {
+ return NULL;
+ }
+
+ lc_curr.lc_local_ndn = op->o_ndn;
+ /* Explicit binds must not be shared;
+ * however, explicit binds are piped in a special connection
+ * when idassert is to occur with "override" set */
+ if ( op->o_tag == LDAP_REQ_BIND && !isproxyauthz ) {
+ lc_curr.lc_conn = op->o_conn;
+
+ } else {
+ if ( isproxyauthz && !( sendok & LDAP_BACK_BINDING ) ) {
+ lc_curr.lc_local_ndn = *binddn;
+ LDAP_BACK_PCONN_ROOTDN_SET( &lc_curr, op );
+ LDAP_BACK_CONN_ISIDASSERT_SET( &lc_curr );
+
+ } else if ( isproxyauthz && ( li->li_idassert_flags & LDAP_BACK_AUTH_OVERRIDE ) ) {
+ lc_curr.lc_local_ndn = slap_empty_bv;
+ LDAP_BACK_PCONN_BIND_SET( &lc_curr, op );
+ LDAP_BACK_CONN_ISIDASSERT_SET( &lc_curr );
+ lookupconn = 1;
+
+ } else if ( SLAP_IS_AUTHZ_BACKEND( op ) ) {
+ lc_curr.lc_conn = op->o_conn;
+
+ } else {
+ LDAP_BACK_PCONN_ANON_SET( &lc_curr, op );
+ }
+ }
+ }
+
+ /* Explicit Bind requests always get their own conn */
+ if ( lookupconn ) {
+retry_lock:
+ ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
+ if ( LDAP_BACK_PCONN_ISPRIV( &lc_curr ) ) {
+ /* lookup a conn that's not binding */
+ LDAP_TAILQ_FOREACH( lc,
+ &li->li_conn_priv[ LDAP_BACK_CONN2PRIV( &lc_curr ) ].lic_priv,
+ lc_q )
+ {
+ if ( !LDAP_BACK_CONN_BINDING( lc ) && lc->lc_refcnt == 0 ) {
+ break;
+ }
+ }
+
+ if ( lc != NULL ) {
+ if ( lc != LDAP_TAILQ_LAST( &li->li_conn_priv[ LDAP_BACK_CONN2PRIV( lc ) ].lic_priv,
+ ldapconn_t, lc_q ) )
+ {
+ LDAP_TAILQ_REMOVE( &li->li_conn_priv[ LDAP_BACK_CONN2PRIV( lc ) ].lic_priv,
+ lc, lc_q );
+ LDAP_TAILQ_ENTRY_INIT( lc, lc_q );
+ LDAP_TAILQ_INSERT_TAIL( &li->li_conn_priv[ LDAP_BACK_CONN2PRIV( lc ) ].lic_priv,
+ lc, lc_q );
+ }
+
+ } else if ( !LDAP_BACK_USE_TEMPORARIES( li )
+ && li->li_conn_priv[ LDAP_BACK_CONN2PRIV( &lc_curr ) ].lic_num == li->li_conn_priv_max )
+ {
+ lc = LDAP_TAILQ_FIRST( &li->li_conn_priv[ LDAP_BACK_CONN2PRIV( &lc_curr ) ].lic_priv );
+ }
+
+ } else {
+
+ /* Searches for a ldapconn in the avl tree */
+ lc = (ldapconn_t *)avl_find( li->li_conninfo.lai_tree,
+ (caddr_t)&lc_curr, ldap_back_conndn_cmp );
+ }
+
+ if ( lc != NULL ) {
+ /* Don't reuse connections while they're still binding */
+ if ( LDAP_BACK_CONN_BINDING( lc ) ) {
+ if ( !LDAP_BACK_USE_TEMPORARIES( li ) ) {
+ ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
+
+ ldap_pvt_thread_yield();
+ goto retry_lock;
+ }
+ lc = NULL;
+ }
+
+ if ( lc != NULL ) {
+ if ( op->o_tag == LDAP_REQ_BIND ) {
+ /* right now, this is the only possible case */
+ assert( ( li->li_idassert_flags & LDAP_BACK_AUTH_OVERRIDE ) );
+ LDAP_BACK_CONN_BINDING_SET( lc );
+ }
+
+ refcnt = ++lc->lc_refcnt;
+ }
+ }
+ ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
+ }
+
+ /* Looks like we didn't get a bind. Open a new session... */
+ if ( lc == NULL ) {
+ lc = (ldapconn_t *)ch_calloc( 1, sizeof( ldapconn_t ) );
+ lc->lc_flags = li->li_flags;
+ lc->lc_lcflags = lc_curr.lc_lcflags;
+ if ( ldap_back_prepare_conn( lc, op, rs, sendok ) != LDAP_SUCCESS ) {
+ ch_free( lc );
+ return NULL;
+ }
+
+ if ( sendok & LDAP_BACK_BINDING ) {
+ LDAP_BACK_CONN_BINDING_SET( lc );
+ }
+
+ lc->lc_conn = lc_curr.lc_conn;
+ ber_dupbv( &lc->lc_local_ndn, &lc_curr.lc_local_ndn );
+
+ /*
+ * the rationale is: connections as the rootdn are privileged,
+ * so acl_authcDN is to be used; however, in some cases
+ * one already configured identity assertion with a highly
+ * privileged idassert_authcDN, so if acl_authcDN is NULL
+ * and idassert_authcDN is not, use the second instead.
+ *
+ * might change in the future, because it's preferable
+ * to make clear what identity is being used, since
+ * the only drawback is that one risks to configure
+ * the same identity twice...
+ */
+ if ( LDAP_BACK_CONN_ISPRIV( &lc_curr ) ) {
+ if ( BER_BVISNULL( &li->li_acl_authcDN ) && !BER_BVISNULL( &li->li_idassert_authcDN ) ) {
+ ber_dupbv( &lc->lc_bound_ndn, &li->li_idassert_authcDN );
+ ber_dupbv( &lc->lc_cred, &li->li_idassert_passwd );
+
+ } else {
+ ber_dupbv( &lc->lc_bound_ndn, &li->li_acl_authcDN );
+ ber_dupbv( &lc->lc_cred, &li->li_acl_passwd );
+ }
+ LDAP_BACK_CONN_ISPRIV_SET( lc );
+
+ } else if ( LDAP_BACK_CONN_ISIDASSERT( &lc_curr ) ) {
+ if ( !LDAP_BACK_PCONN_ISBIND( &lc_curr ) ) {
+ ber_dupbv( &lc->lc_bound_ndn, &li->li_idassert_authcDN );
+ ber_dupbv( &lc->lc_cred, &li->li_idassert_passwd );
+ }
+ LDAP_BACK_CONN_ISIDASSERT_SET( lc );
+
+ } else {
+ BER_BVZERO( &lc->lc_cred );
+ BER_BVZERO( &lc->lc_bound_ndn );
+ if ( !BER_BVISEMPTY( &op->o_ndn )
+ && SLAP_IS_AUTHZ_BACKEND( op ) )
+ {
+ ber_dupbv( &lc->lc_bound_ndn, &op->o_ndn );
+ }
+ }
+
+#ifdef HAVE_TLS
+ /* if start TLS failed but it was not mandatory,
+ * check if the non-TLS connection was already
+ * in cache; in case, destroy the newly created
+ * connection and use the existing one */
+ if ( LDAP_BACK_PCONN_ISTLS( lc )
+ && !ldap_tls_inplace( lc->lc_ld ) )
+ {
+ ldapconn_t *tmplc = NULL;
+ int idx = LDAP_BACK_CONN2PRIV( &lc_curr ) - 1;
+
+ ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
+ LDAP_TAILQ_FOREACH( tmplc,
+ &li->li_conn_priv[ idx ].lic_priv,
+ lc_q )
+ {
+ if ( !LDAP_BACK_CONN_BINDING( tmplc ) ) {
+ break;
+ }
+ }
+
+ if ( tmplc != NULL ) {
+ refcnt = ++tmplc->lc_refcnt;
+ ldap_back_conn_free( lc );
+ lc = tmplc;
+ }
+ ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
+
+ if ( tmplc != NULL ) {
+ goto done;
+ }
+ }
+#endif /* HAVE_TLS */
+
+ /* Inserts the newly created ldapconn in the avl tree */
+ ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
+
+ LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
+
+ assert( lc->lc_refcnt == 1 );
+
+#if LDAP_BACK_PRINT_CONNTREE > 0
+ ldap_back_print_conntree( li, ">>> ldap_back_getconn(insert)" );
+#endif /* LDAP_BACK_PRINT_CONNTREE */
+
+ if ( LDAP_BACK_PCONN_ISPRIV( lc ) ) {
+ if ( li->li_conn_priv[ LDAP_BACK_CONN2PRIV( lc ) ].lic_num < li->li_conn_priv_max ) {
+ LDAP_TAILQ_INSERT_TAIL( &li->li_conn_priv[ LDAP_BACK_CONN2PRIV( lc ) ].lic_priv, lc, lc_q );
+ li->li_conn_priv[ LDAP_BACK_CONN2PRIV( lc ) ].lic_num++;
+ LDAP_BACK_CONN_CACHED_SET( lc );
+
+ } else {
+ LDAP_BACK_CONN_TAINTED_SET( lc );
+ }
+ rs->sr_err = 0;
+
+ } else {
+ rs->sr_err = avl_insert( &li->li_conninfo.lai_tree, (caddr_t)lc,
+ ldap_back_conndn_cmp, ldap_back_conndn_dup );
+ LDAP_BACK_CONN_CACHED_SET( lc );
+ }
+
+#if LDAP_BACK_PRINT_CONNTREE > 0
+ ldap_back_print_conntree( li, "<<< ldap_back_getconn(insert)" );
+#endif /* LDAP_BACK_PRINT_CONNTREE */
+
+ ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
+
+ if ( StatslogTest( LDAP_DEBUG_TRACE ) ) {
+ char buf[ SLAP_TEXT_BUFLEN ];
+
+ snprintf( buf, sizeof( buf ),
+ "lc=%p inserted refcnt=%u rc=%d",
+ (void *)lc, refcnt, rs->sr_err );
+
+ Debug( LDAP_DEBUG_TRACE,
+ "=>ldap_back_getconn: %s: %s\n",
+ op->o_log_prefix, buf, 0 );
+ }
+
+ if ( !LDAP_BACK_PCONN_ISPRIV( lc ) ) {
+ /* Err could be -1 in case a duplicate ldapconn is inserted */
+ switch ( rs->sr_err ) {
+ case 0:
+ break;
+
+ case -1:
+ LDAP_BACK_CONN_CACHED_CLEAR( lc );
+ if ( !( sendok & LDAP_BACK_BINDING ) && !LDAP_BACK_USE_TEMPORARIES( li ) ) {
+ /* duplicate: free and try to get the newly created one */
+ ldap_back_conn_free( lc );
+ lc = NULL;
+ goto retry_lock;
+ }
+
+ /* taint connection, so that it'll be freed when released */
+ LDAP_BACK_CONN_TAINTED_SET( lc );
+ break;
+
+ default:
+ LDAP_BACK_CONN_CACHED_CLEAR( lc );
+ ldap_back_conn_free( lc );
+ rs->sr_err = LDAP_OTHER;
+ rs->sr_text = "Proxy bind collision";
+ if ( op->o_conn && ( sendok & LDAP_BACK_SENDERR ) ) {
+ send_ldap_result( op, rs );
+ }
+ return NULL;
+ }
+ }
+
+ } else {
+ int expiring = 0;
+
+ if ( ( li->li_idle_timeout != 0 && op->o_time > lc->lc_time + li->li_idle_timeout )
+ || ( li->li_conn_ttl != 0 && op->o_time > lc->lc_create_time + li->li_conn_ttl ) )
+ {
+ expiring = 1;
+
+ /* let it be used, but taint/delete it so that
+ * no-one else can look it up any further */
+ ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
+
+#if LDAP_BACK_PRINT_CONNTREE > 0
+ ldap_back_print_conntree( li, ">>> ldap_back_getconn(timeout)" );
+#endif /* LDAP_BACK_PRINT_CONNTREE */
+
+ (void)ldap_back_conn_delete( li, lc );
+ LDAP_BACK_CONN_TAINTED_SET( lc );
+
+#if LDAP_BACK_PRINT_CONNTREE > 0
+ ldap_back_print_conntree( li, "<<< ldap_back_getconn(timeout)" );
+#endif /* LDAP_BACK_PRINT_CONNTREE */
+
+ ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
+ }
+
+ if ( StatslogTest( LDAP_DEBUG_TRACE ) ) {
+ char buf[ SLAP_TEXT_BUFLEN ];
+
+ snprintf( buf, sizeof( buf ),
+ "conn %p fetched refcnt=%u%s",
+ (void *)lc, refcnt,
+ expiring ? " expiring" : "" );
+ Debug( LDAP_DEBUG_TRACE,
+ "=>ldap_back_getconn: %s.\n", buf, 0, 0 );
+ }
+ }
+
+#ifdef HAVE_TLS
+done:;
+#endif /* HAVE_TLS */
+
+ return lc;
+}
+
+void
+ldap_back_release_conn_lock(
+ ldapinfo_t *li,
+ ldapconn_t **lcp,
+ int dolock )
+{
+
+ ldapconn_t *lc = *lcp;
+
+ if ( dolock ) {
+ ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
+ }
+ assert( lc->lc_refcnt > 0 );
+ LDAP_BACK_CONN_BINDING_CLEAR( lc );
+ lc->lc_refcnt--;
+ if ( LDAP_BACK_CONN_TAINTED( lc ) ) {
+ ldap_back_freeconn( li, lc, 0 );
+ *lcp = NULL;
+ }
+ if ( dolock ) {
+ ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
+ }
+}
+
+void
+ldap_back_quarantine(
+ Operation *op,
+ SlapReply *rs )
+{
+ ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
+
+ slap_retry_info_t *ri = &li->li_quarantine;
+
+ ldap_pvt_thread_mutex_lock( &li->li_quarantine_mutex );
+
+ if ( rs->sr_err == LDAP_UNAVAILABLE ) {
+ time_t new_last = slap_get_time();
+
+ switch ( li->li_isquarantined ) {
+ case LDAP_BACK_FQ_NO:
+ if ( ri->ri_last == new_last ) {
+ goto done;
+ }
+
+ Debug( LDAP_DEBUG_ANY,
+ "%s: ldap_back_quarantine enter.\n",
+ op->o_log_prefix, 0, 0 );
+
+ ri->ri_idx = 0;
+ ri->ri_count = 0;
+ break;
+
+ case LDAP_BACK_FQ_RETRYING:
+ Debug( LDAP_DEBUG_ANY,
+ "%s: ldap_back_quarantine block #%d try #%d failed.\n",
+ op->o_log_prefix, ri->ri_idx, ri->ri_count );
+
+ ++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;
+ }
+
+ li->li_isquarantined = LDAP_BACK_FQ_YES;
+ ri->ri_last = new_last;
+
+ } else if ( li->li_isquarantined != LDAP_BACK_FQ_NO ) {
+ if ( ri->ri_last == slap_get_time() ) {
+ goto done;
+ }
+
+ Debug( LDAP_DEBUG_ANY,
+ "%s: ldap_back_quarantine exit (%d) err=%d.\n",
+ op->o_log_prefix, li->li_isquarantined, rs->sr_err );
+
+ if ( li->li_quarantine_f ) {
+ (void)li->li_quarantine_f( li, li->li_quarantine_p );
+ }
+
+ ri->ri_count = 0;
+ ri->ri_idx = 0;
+ li->li_isquarantined = LDAP_BACK_FQ_NO;
+ }
+
+done:;
+ ldap_pvt_thread_mutex_unlock( &li->li_quarantine_mutex );
+}
+
+/*
+ * ldap_back_dobind_int
+ *
+ * Note: dolock indicates whether li->li_conninfo.lai_mutex must be locked or not
+ */
+static int
+ldap_back_dobind_int(
+ ldapconn_t **lcp,
+ Operation *op,
+ SlapReply *rs,
+ ldap_back_send_t sendok,
+ int retries,
+ int dolock )
+{
+ ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
+
+ ldapconn_t *lc;
+ struct berval binddn = slap_empty_bv,
+ bindcred = slap_empty_bv;
+
+ int rc = 0,
+ isbound,
+ binding = 0;
+ ber_int_t msgid;
+
+ assert( lcp != NULL );
+ assert( retries >= 0 );
+
+ if ( sendok & LDAP_BACK_GETCONN ) {
+ assert( *lcp == NULL );
+
+ lc = ldap_back_getconn( op, rs, sendok, &binddn, &bindcred );
+ if ( lc == NULL ) {
+ return 0;
+ }
+ *lcp = lc;
+
+ } else {
+ lc = *lcp;
+ }
+
+ assert( lc != NULL );
+
+retry_lock:;
+ if ( dolock ) {
+ ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
+ }
+
+ if ( binding == 0 ) {
+ /* check if already bound */
+ rc = isbound = LDAP_BACK_CONN_ISBOUND( lc );
+ if ( isbound ) {
+ if ( dolock ) {
+ ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
+ }
+ return rc;
+ }
+
+ if ( LDAP_BACK_CONN_BINDING( lc ) ) {
+ /* if someone else is about to bind it, give up and retry */
+ if ( dolock ) {
+ ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
+ }
+ ldap_pvt_thread_yield();
+ goto retry_lock;
+
+ } else {
+ /* otherwise this thread will bind it */
+ LDAP_BACK_CONN_BINDING_SET( lc );
+ binding = 1;
+ }
+ }
+
+ if ( dolock ) {
+ ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
+ }
+
+ /*
+ * FIXME: we need to let clients use proxyAuthz
+ * otherwise we cannot do symmetric pools of servers;
+ * we have to live with the fact that a user can
+ * authorize itself as any ID that is allowed
+ * by the authzTo directive of the "proxyauthzdn".
+ */
+ /*
+ * NOTE: current Proxy Authorization specification
+ * and implementation do not allow proxy authorization
+ * control to be provided with Bind requests
+ */
+ /*
+ * if no bind took place yet, but the connection is bound
+ * and the "idassert-authcDN" (or other ID) is set,
+ * then bind as the asserting identity and explicitly
+ * add the proxyAuthz control to every operation with the
+ * dn bound to the connection as control value.
+ * This is done also if this is the authrizing backend,
+ * but the "override" flag is given to idassert.
+ * It allows to use SASL bind and yet proxyAuthz users
+ */
+ if ( LDAP_BACK_CONN_ISIDASSERT( lc ) ) {
+ if ( BER_BVISEMPTY( &binddn ) && BER_BVISEMPTY( &bindcred ) ) {
+ /* if we got here, it shouldn't return result */
+ rc = ldap_back_is_proxy_authz( op, rs,
+ LDAP_BACK_DONTSEND, &binddn, &bindcred );
+ assert( rc == 1 );
+ }
+ rc = ldap_back_proxy_authz_bind( lc, op, rs, sendok, &binddn, &bindcred );
+ goto done;
+ }
+
+#ifdef HAVE_CYRUS_SASL
+ if ( LDAP_BACK_CONN_ISPRIV( lc )
+ && li->li_acl_authmethod == LDAP_AUTH_SASL )
+ {
+ void *defaults = NULL;
+
+ if ( li->li_acl_secprops != NULL ) {
+ rc = ldap_set_option( lc->lc_ld,
+ LDAP_OPT_X_SASL_SECPROPS, li->li_acl_secprops );
+
+ if ( rc != LDAP_OPT_SUCCESS ) {
+ Debug( LDAP_DEBUG_ANY, "Error: ldap_set_option "
+ "(SECPROPS,\"%s\") failed!\n",
+ li->li_acl_secprops, 0, 0 );
+ goto done;
+ }
+ }
+
+ defaults = lutil_sasl_defaults( lc->lc_ld,
+ li->li_acl_sasl_mech.bv_val,
+ li->li_acl_sasl_realm.bv_val,
+ li->li_acl_authcID.bv_val,
+ li->li_acl_passwd.bv_val,
+ NULL );
+
+ rs->sr_err = ldap_sasl_interactive_bind_s( lc->lc_ld,
+ li->li_acl_authcDN.bv_val,
+ li->li_acl_sasl_mech.bv_val, NULL, NULL,
+ LDAP_SASL_QUIET, lutil_sasl_interact,
+ defaults );
+
+ lutil_sasl_freedefs( defaults );
+
+ switch ( rs->sr_err ) {
+ case LDAP_SUCCESS:
+ LDAP_BACK_CONN_ISBOUND_SET( lc );
+ break;
+
+ case LDAP_LOCAL_ERROR:
+ /* list client API error codes that require
+ * to taint the connection */
+ /* FIXME: should actually retry? */
+ LDAP_BACK_CONN_TAINTED_SET( lc );
+
+ /* fallthru */
+
+ default:
+ LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
+ rs->sr_err = slap_map_api2result( rs );
+ if ( sendok & LDAP_BACK_SENDERR ) {
+ send_ldap_result( op, rs );
+ }
+ break;
+ }
+
+ if ( LDAP_BACK_QUARANTINE( li ) ) {
+ ldap_back_quarantine( op, rs );
+ }
+
+ goto done;
+ }
+#endif /* HAVE_CYRUS_SASL */
+
+retry:;
+ rs->sr_err = ldap_sasl_bind( lc->lc_ld,
+ BER_BVISNULL( &lc->lc_cred ) ? "" : lc->lc_bound_ndn.bv_val,
+ LDAP_SASL_SIMPLE, &lc->lc_cred,
+ NULL, NULL, &msgid );
+
+ if ( rs->sr_err == LDAP_SERVER_DOWN ) {
+ if ( retries != LDAP_BACK_RETRY_NEVER ) {
+ if ( dolock ) {
+ ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
+ }
+
+ assert( lc->lc_refcnt > 0 );
+ if ( lc->lc_refcnt == 1 ) {
+ ldap_unbind_ext( lc->lc_ld, NULL, NULL );
+ lc->lc_ld = NULL;
+
+ /* lc here must be the regular lc, reset and ready for init */
+ rs->sr_err = ldap_back_prepare_conn( lc, op, rs, sendok );
+ if ( rs->sr_err != LDAP_SUCCESS ) {
+ sendok &= ~LDAP_BACK_SENDERR;
+ lc->lc_refcnt = 0;
+ }
+ }
+
+ if ( dolock ) {
+ ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
+ }
+
+ if ( rs->sr_err == LDAP_SUCCESS ) {
+ if ( retries > 0 ) {
+ retries--;
+ }
+ goto retry;
+ }
+ }
+
+ assert( lc->lc_refcnt == 1 );
+ lc->lc_refcnt = 0;
+ ldap_back_freeconn( li, lc, dolock );
+ *lcp = NULL;
+ rs->sr_err = slap_map_api2result( rs );
+
+ if ( LDAP_BACK_QUARANTINE( li ) ) {
+ ldap_back_quarantine( op, rs );
+ }
+
+ if ( rs->sr_err != LDAP_SUCCESS &&
+ ( sendok & LDAP_BACK_SENDERR ) )
+ {
+ rs->sr_text = "Internal proxy bind failure";
+ send_ldap_result( op, rs );
+ }
+
+ return 0;
+ }
+
+ rc = ldap_back_op_result( lc, op, rs, msgid,
+ -1, ( sendok | LDAP_BACK_BINDING ) );
+ if ( rc == LDAP_SUCCESS ) {
+ LDAP_BACK_CONN_ISBOUND_SET( lc );
+ }
+
+done:;
+ LDAP_BACK_CONN_BINDING_CLEAR( lc );
+ rc = LDAP_BACK_CONN_ISBOUND( lc );
+ if ( !rc ) {
+ ldap_back_release_conn_lock( li, lcp, dolock );
+
+ } else if ( LDAP_BACK_SAVECRED( li ) ) {
+ ldap_set_rebind_proc( lc->lc_ld, li->li_rebind_f, lc );
+ }
+
+ return rc;
+}
+
+/*
+ * ldap_back_dobind
+ *
+ * Note: dolock indicates whether li->li_conninfo.lai_mutex must be locked or not
+ */
+int
+ldap_back_dobind( ldapconn_t **lcp, Operation *op, SlapReply *rs, ldap_back_send_t sendok )
+{
+ ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
+
+ return ldap_back_dobind_int( lcp, op, rs,
+ ( sendok | LDAP_BACK_GETCONN ), li->li_nretries, 1 );
+}
+
+/*
+ * ldap_back_default_rebind
+ *
+ * This is a callback used for chasing referrals using the same
+ * credentials as the original user on this session.
+ */
+int
+ldap_back_default_rebind( LDAP *ld, LDAP_CONST char *url, ber_tag_t request,
+ ber_int_t msgid, void *params )
+{
+ ldapconn_t *lc = (ldapconn_t *)params;
+
+#ifdef HAVE_TLS
+ /* ... otherwise we couldn't get here */
+ assert( lc != NULL );
+
+ if ( !ldap_tls_inplace( ld ) ) {
+ int is_tls = LDAP_BACK_CONN_ISTLS( lc ),
+ rc;
+ const char *text = NULL;
+
+ rc = ldap_back_start_tls( ld, 0, &is_tls, url, lc->lc_flags,
+ LDAP_BACK_RETRY_DEFAULT, &text );
+ if ( rc != LDAP_SUCCESS ) {
+ return rc;
+ }
+ }
+#endif /* HAVE_TLS */
+
+ /* FIXME: add checks on the URL/identity? */
+
+ return ldap_sasl_bind_s( ld,
+ BER_BVISNULL( &lc->lc_cred ) ? "" : lc->lc_bound_ndn.bv_val,
+ LDAP_SASL_SIMPLE, &lc->lc_cred, NULL, NULL, NULL );
+}
+
+int
+ldap_back_cancel(
+ ldapconn_t *lc,
+ Operation *op,
+ SlapReply *rs,
+ ber_int_t msgid,
+ ldap_back_send_t sendok )
+{
+ ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
+
+ /* default behavior */
+ if ( LDAP_BACK_ABANDON( li ) ) {
+ return ldap_abandon_ext( lc->lc_ld, msgid, NULL, NULL );
+ }
+
+ if ( LDAP_BACK_CANCEL( li ) ) {
+ /* FIXME: asynchronous? */
+ return ldap_cancel_s( lc->lc_ld, msgid, NULL, NULL );
+ }
+
+ assert( 0 );
+
+ return LDAP_OTHER;
+}
+
+int
+ldap_back_op_result(
+ ldapconn_t *lc,
+ Operation *op,
+ SlapReply *rs,
+ ber_int_t msgid,
+ time_t timeout,
+ ldap_back_send_t sendok )
+{
+ ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
+
+ char *match = NULL;
+ char *text = NULL;
+ char **refs = NULL;
+ LDAPControl **ctrls = NULL;
+
+#define ERR_OK(err) ((err) == LDAP_SUCCESS || (err) == LDAP_COMPARE_FALSE || (err) == LDAP_COMPARE_TRUE)
+
+ rs->sr_text = NULL;
+ rs->sr_matched = NULL;
+ rs->sr_ref = NULL;
+ rs->sr_ctrls = NULL;
+
+ /* if the error recorded in the reply corresponds
+ * to a successful state, get the error from the
+ * remote server response */
+ if ( ERR_OK( rs->sr_err ) ) {
+ int rc;
+ struct timeval tv;
+ LDAPMessage *res = NULL;
+ time_t stoptime = (time_t)(-1);
+ int timeout_err = op->o_protocol >= LDAP_VERSION3 ?
+ LDAP_ADMINLIMIT_EXCEEDED : LDAP_OTHER;
+ const char *timeout_text = "Operation timed out";
+
+ /* if timeout is not specified, compute and use
+ * the one specific to the ongoing operation */
+ if ( timeout == (time_t)(-1) ) {
+ slap_op_t opidx = slap_req2op( op->o_tag );
+
+ if ( opidx == SLAP_OP_SEARCH ) {
+ if ( op->ors_tlimit <= 0 ) {
+ timeout = 0;
+
+ } else {
+ timeout = op->ors_tlimit;
+ timeout_err = LDAP_TIMELIMIT_EXCEEDED;
+ timeout_text = NULL;
+ }
+
+ } else {
+ timeout = li->li_timeout[ opidx ];
+ }
+ }
+
+ /* better than nothing :) */
+ if ( timeout == 0 ) {
+ if ( li->li_idle_timeout ) {
+ timeout = li->li_idle_timeout;
+
+ } else if ( li->li_conn_ttl ) {
+ timeout = li->li_conn_ttl;
+ }
+ }
+
+ if ( timeout ) {
+ stoptime = op->o_time + timeout;
+ }
+
+ LDAP_BACK_TV_SET( &tv );
+
+retry:;
+ /* if result parsing fails, note the failure reason */
+ rc = ldap_result( lc->lc_ld, msgid, LDAP_MSG_ALL, &tv, &res );
+ switch ( rc ) {
+ case 0:
+ if ( timeout && slap_get_time() > stoptime ) {
+ if ( sendok & LDAP_BACK_BINDING ) {
+ ldap_unbind_ext( lc->lc_ld, NULL, NULL );
+ lc->lc_ld = NULL;
+
+ /* let it be used, but taint/delete it so that
+ * no-one else can look it up any further */
+ ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
+
+#if LDAP_BACK_PRINT_CONNTREE > 0
+ ldap_back_print_conntree( li, ">>> ldap_back_getconn(timeout)" );
+#endif /* LDAP_BACK_PRINT_CONNTREE */
+
+ (void)ldap_back_conn_delete( li, lc );
+ LDAP_BACK_CONN_TAINTED_SET( lc );
+
+#if LDAP_BACK_PRINT_CONNTREE > 0
+ ldap_back_print_conntree( li, "<<< ldap_back_getconn(timeout)" );
+#endif /* LDAP_BACK_PRINT_CONNTREE */
+ ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
+
+ } else {
+ (void)ldap_back_cancel( lc, op, rs, msgid, sendok );
+ }
+ rs->sr_err = timeout_err;
+ rs->sr_text = timeout_text;
+ break;
+ }
+
+ /* timeout == 0 */
+ LDAP_BACK_TV_SET( &tv );
+ ldap_pvt_thread_yield();
+ goto retry;
+
+ case -1:
+ ldap_get_option( lc->lc_ld, LDAP_OPT_ERROR_NUMBER,
+ &rs->sr_err );
+ break;
+
+
+ /* otherwise get the result; if it is not
+ * LDAP_SUCCESS, record it in the reply
+ * structure (this includes
+ * LDAP_COMPARE_{TRUE|FALSE}) */
+ default:
+ /* only touch when activity actually took place... */
+ if ( li->li_idle_timeout && lc ) {
+ lc->lc_time = op->o_time;
+ }
+
+ rc = ldap_parse_result( lc->lc_ld, res, &rs->sr_err,
+ &match, &text, &refs, &ctrls, 1 );
+ rs->sr_text = text;
+ if ( rc != LDAP_SUCCESS ) {
+ rs->sr_err = rc;
+ }
+
+ /* RFC 4511: referrals can only appear
+ * if result code is LDAP_REFERRAL */
+ if ( refs != NULL
+ && refs[ 0 ] != NULL
+ && refs[ 0 ][ 0 ] != '\0' )
+ {
+ if ( rs->sr_err != LDAP_REFERRAL ) {
+ Debug( LDAP_DEBUG_ANY,
+ "%s ldap_back_op_result: "
+ "got referrals with err=%d\n",
+ op->o_log_prefix,
+ rs->sr_err, 0 );
+
+ } else {
+ int i;
+
+ for ( i = 0; refs[ i ] != NULL; i++ )
+ /* count */ ;
+ rs->sr_ref = op->o_tmpalloc( sizeof( struct berval ) * ( i + 1 ),
+ op->o_tmpmemctx );
+ for ( i = 0; refs[ i ] != NULL; i++ ) {
+ ber_str2bv( refs[ i ], 0, 0, &rs->sr_ref[ i ] );
+ }
+ BER_BVZERO( &rs->sr_ref[ i ] );
+ }
+
+ } else if ( rs->sr_err == LDAP_REFERRAL ) {
+ Debug( LDAP_DEBUG_ANY,
+ "%s ldap_back_op_result: "
+ "got err=%d with null "
+ "or empty referrals\n",
+ op->o_log_prefix,
+ rs->sr_err, 0 );
+
+ rs->sr_err = LDAP_NO_SUCH_OBJECT;
+ }
+
+ if ( ctrls != NULL ) {
+ rs->sr_ctrls = ctrls;
+ }
+ }
+ }
+
+ /* if the error in the reply structure is not
+ * LDAP_SUCCESS, try to map it from client
+ * to server error */
+ if ( !ERR_OK( rs->sr_err ) ) {
+ rs->sr_err = slap_map_api2result( rs );
+
+ /* internal ops ( op->o_conn == NULL )
+ * must not reply to client */
+ if ( op->o_conn && !op->o_do_not_cache && match ) {
+
+ /* record the (massaged) matched
+ * DN into the reply structure */
+ rs->sr_matched = match;
+ }
+ }
+
+ if ( rs->sr_err == LDAP_UNAVAILABLE ) {
+ if ( !( sendok & LDAP_BACK_RETRYING ) ) {
+ if ( LDAP_BACK_QUARANTINE( li ) ) {
+ ldap_back_quarantine( op, rs );
+ }
+ if ( op->o_conn && ( sendok & LDAP_BACK_SENDERR ) ) {
+ if ( rs->sr_text == NULL ) rs->sr_text = "Proxy operation retry failed";
+ send_ldap_result( op, rs );
+ }
+ }
+
+ } else if ( op->o_conn &&
+ ( ( ( sendok & LDAP_BACK_SENDOK ) && ERR_OK( rs->sr_err ) )
+ || ( ( sendok & LDAP_BACK_SENDERR ) && rs->sr_err != LDAP_SUCCESS ) ) )
+ {
+ send_ldap_result( op, rs );
+ }
+
+ if ( match ) {
+ if ( rs->sr_matched != match ) {
+ free( (char *)rs->sr_matched );
+ }
+ rs->sr_matched = NULL;
+ ldap_memfree( match );
+ }
+
+ if ( text ) {
+ ldap_memfree( text );
+ }
+ rs->sr_text = NULL;
+
+ if ( rs->sr_ref ) {
+ op->o_tmpfree( rs->sr_ref, op->o_tmpmemctx );
+ rs->sr_ref = NULL;
+ }
+
+ if ( refs ) {
+ ber_memvfree( (void **)refs );
+ }
+
+ if ( ctrls ) {
+ assert( rs->sr_ctrls != NULL );
+ ldap_controls_free( ctrls );
+ rs->sr_ctrls = NULL;
+ }
+
+ return( ERR_OK( rs->sr_err ) ? LDAP_SUCCESS : rs->sr_err );
+}
+
+/* return true if bound, false if failed */
+int
+ldap_back_retry( ldapconn_t **lcp, Operation *op, SlapReply *rs, ldap_back_send_t sendok )
+{
+ ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
+ int rc = 0;
+
+ assert( lcp != NULL );
+ assert( *lcp != NULL );
+
+ ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
+
+ if ( (*lcp)->lc_refcnt == 1 ) {
+ int binding = LDAP_BACK_CONN_BINDING( *lcp );
+
+ ldap_pvt_thread_mutex_lock( &li->li_uri_mutex );
+ Debug( LDAP_DEBUG_ANY,
+ "%s ldap_back_retry: retrying URI=\"%s\" DN=\"%s\"\n",
+ op->o_log_prefix, li->li_uri,
+ BER_BVISNULL( &(*lcp)->lc_bound_ndn ) ?
+ "" : (*lcp)->lc_bound_ndn.bv_val );
+ ldap_pvt_thread_mutex_unlock( &li->li_uri_mutex );
+
+ ldap_unbind_ext( (*lcp)->lc_ld, NULL, NULL );
+ (*lcp)->lc_ld = NULL;
+ LDAP_BACK_CONN_ISBOUND_CLEAR( (*lcp) );
+
+ /* lc here must be the regular lc, reset and ready for init */
+ rc = ldap_back_prepare_conn( *lcp, op, rs, sendok );
+ if ( rc != LDAP_SUCCESS ) {
+ /* freeit, because lc_refcnt == 1 */
+ (*lcp)->lc_refcnt = 0;
+ (void)ldap_back_freeconn( li, *lcp, 0 );
+ *lcp = NULL;
+ rc = 0;
+
+ } else if ( ( sendok & LDAP_BACK_BINDING ) ) {
+ if ( binding ) {
+ LDAP_BACK_CONN_BINDING_SET( *lcp );
+ }
+ rc = 1;
+
+ } else {
+ rc = ldap_back_dobind_int( lcp, op, rs, sendok, 0, 0 );
+ if ( rc == 0 && *lcp != NULL ) {
+ /* freeit, because lc_refcnt == 1 */
+ (*lcp)->lc_refcnt = 0;
+ LDAP_BACK_CONN_TAINTED_SET( *lcp );
+ (void)ldap_back_freeconn( li, *lcp, 0 );
+ *lcp = NULL;
+ }
+ }
+
+ } else {
+ Debug( LDAP_DEBUG_TRACE,
+ "ldap_back_retry: conn %p refcnt=%u unable to retry.\n",
+ (void *)(*lcp), (*lcp)->lc_refcnt, 0 );
+
+ LDAP_BACK_CONN_TAINTED_SET( *lcp );
+ ldap_back_release_conn_lock( li, lcp, 0 );
+ assert( *lcp == NULL );
+
+ if ( sendok & LDAP_BACK_SENDERR ) {
+ rs->sr_err = LDAP_UNAVAILABLE;
+ rs->sr_text = "Unable to retry";
+ send_ldap_result( op, rs );
+ }
+ }
- ldap_pvt_thread_mutex_lock( &li->conn_mutex );
- lc = avl_delete( &li->conntree, (caddr_t)lc,
- ldap_back_conn_cmp );
- ldap_back_conn_free( (void *)lc );
- ldap_pvt_thread_mutex_unlock( &li->conn_mutex );
+ ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
- return 0;
+ return rc;
}
-struct ldapconn *
-ldap_back_getconn(Operation *op, SlapReply *rs)
+static int
+ldap_back_is_proxy_authz( Operation *op, SlapReply *rs, ldap_back_send_t sendok,
+ struct berval *binddn, struct berval *bindcred )
{
- struct ldapinfo *li = (struct ldapinfo *)op->o_bd->be_private;
- struct ldapconn *lc, lc_curr;
- LDAP *ld;
- int is_priv = 0;
+ ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
+ struct berval ndn;
+ int dobind = 0;
- /* Searches for a ldapconn in the avl tree */
+ if ( op->o_conn == NULL || op->o_do_not_cache ) {
+ goto done;
+ }
- /* Explicit binds must not be shared */
- if ( op->o_tag == LDAP_REQ_BIND
- || ( op->o_conn && op->o_bd == op->o_conn->c_authz_backend ) ) {
- lc_curr.conn = op->o_conn;
+ /* don't proxyAuthz if protocol is not LDAPv3 */
+ switch ( li->li_version ) {
+ case LDAP_VERSION3:
+ break;
- } else {
- lc_curr.conn = NULL;
+ case 0:
+ if ( op->o_protocol == 0 || op->o_protocol == LDAP_VERSION3 ) {
+ break;
+ }
+ /* fall thru */
+
+ default:
+ rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
+ if ( sendok & LDAP_BACK_SENDERR ) {
+ send_ldap_result( op, rs );
+ dobind = -1;
+ }
+ goto done;
}
-
- /* Internal searches are privileged and shared. So is root. */
- if ( op->o_do_not_cache || be_isroot( op ) ) {
- lc_curr.local_dn = op->o_bd->be_rootndn;
- lc_curr.conn = NULL;
- is_priv = 1;
+
+ /* safe default */
+ *binddn = slap_empty_bv;
+ *bindcred = slap_empty_bv;
+
+ if ( !BER_BVISNULL( &op->o_conn->c_ndn ) ) {
+ ndn = op->o_conn->c_ndn;
} else {
- lc_curr.local_dn = op->o_ndn;
+ ndn = op->o_ndn;
}
- ldap_pvt_thread_mutex_lock( &li->conn_mutex );
- lc = (struct ldapconn *)avl_find( li->conntree,
- (caddr_t)&lc_curr, ldap_back_conn_cmp );
- ldap_pvt_thread_mutex_unlock( &li->conn_mutex );
-
- /* Looks like we didn't get a bind. Open a new session... */
- if (!lc) {
- int vers = op->o_protocol;
- rs->sr_err = ldap_initialize(&ld, li->url);
-
- if (rs->sr_err != LDAP_SUCCESS) {
- rs->sr_err = slap_map_api2result( rs );
- if (rs->sr_text == NULL) {
- rs->sr_text = "ldap_initialize() failed";
+ switch ( li->li_idassert_mode ) {
+ case LDAP_BACK_IDASSERT_LEGACY:
+ if ( !BER_BVISNULL( &ndn ) && !BER_BVISEMPTY( &ndn ) ) {
+ if ( !BER_BVISNULL( &li->li_idassert_authcDN ) && !BER_BVISEMPTY( &li->li_idassert_authcDN ) )
+ {
+ *binddn = li->li_idassert_authcDN;
+ *bindcred = li->li_idassert_passwd;
+ dobind = 1;
}
- if (op->o_conn) send_ldap_result( op, rs );
- rs->sr_text = NULL;
- return( NULL );
}
- /* Set LDAP version. This will always succeed: If the client
- * bound with a particular version, then so can we.
- */
- ldap_set_option(ld, LDAP_OPT_PROTOCOL_VERSION,
- (const void *)&vers);
- /* FIXME: configurable? */
- ldap_set_option(ld, LDAP_OPT_REFERRALS, LDAP_OPT_ON);
+ break;
- lc = (struct ldapconn *)ch_malloc(sizeof(struct ldapconn));
- lc->conn = lc_curr.conn;
- lc->ld = ld;
- ber_dupbv( &lc->local_dn, &lc_curr.local_dn );
+ default:
+ /* NOTE: rootdn can always idassert */
+ if ( BER_BVISNULL( &ndn )
+ && li->li_idassert_authz == NULL
+ && !( li->li_idassert_flags & LDAP_BACK_AUTH_AUTHZ_ALL ) )
+ {
+ if ( li->li_idassert_flags & LDAP_BACK_AUTH_PRESCRIPTIVE ) {
+ rs->sr_err = LDAP_INAPPROPRIATE_AUTH;
+ if ( sendok & LDAP_BACK_SENDERR ) {
+ send_ldap_result( op, rs );
+ dobind = -1;
+ }
-#ifdef ENABLE_REWRITE
- /*
- * Sets a cookie for the rewrite session
- *
- * FIXME: the o_conn might be no longer valid,
- * since we may have different entries
- * for the same connection
- */
- ( void )rewrite_session_init( li->rwmap.rwm_rw, op->o_conn );
-#endif /* ENABLE_REWRITE */
+ } else {
+ rs->sr_err = LDAP_SUCCESS;
+ *binddn = slap_empty_bv;
+ *bindcred = slap_empty_bv;
+ break;
+ }
- ldap_pvt_thread_mutex_init( &lc->lc_mutex );
+ goto done;
- if ( is_priv ) {
- ber_dupbv( &lc->cred, &li->acl_passwd );
- ber_dupbv( &lc->bound_dn, &li->acl_authcDN );
+ } else if ( li->li_idassert_authz && !be_isroot( op ) ) {
+ struct berval authcDN;
- } else {
- BER_BVZERO( &lc->cred );
- BER_BVZERO( &lc->bound_dn );
- if ( op->o_conn && !BER_BVISEMPTY( &op->o_conn->c_dn )
- && ( op->o_bd == op->o_conn->c_authz_backend ) ) {
-
- dncookie dc;
- struct berval bv;
-
- /*
- * Rewrite the bind dn if needed
- */
- dc.rwmap = &li->rwmap;
-#ifdef ENABLE_REWRITE
- dc.conn = op->o_conn;
- dc.rs = rs;
- dc.ctx = "bindDN";
-#else
- dc.tofrom = 1;
- dc.normalized = 0;
-#endif
+ if ( BER_BVISNULL( &ndn ) ) {
+ authcDN = slap_empty_bv;
- if ( ldap_back_dn_massage( &dc, &op->o_conn->c_dn, &bv ) ) {
- send_ldap_result( op, rs );
- return NULL;
- }
+ } else {
+ authcDN = ndn;
+ }
+ rs->sr_err = slap_sasl_matches( op, li->li_idassert_authz,
+ &authcDN, &authcDN );
+ if ( rs->sr_err != LDAP_SUCCESS ) {
+ if ( li->li_idassert_flags & LDAP_BACK_AUTH_PRESCRIPTIVE ) {
+ if ( sendok & LDAP_BACK_SENDERR ) {
+ send_ldap_result( op, rs );
+ dobind = -1;
+ }
- if ( bv.bv_val == op->o_conn->c_dn.bv_val ) {
- ber_dupbv( &lc->bound_dn, &bv );
} else {
- lc->bound_dn = bv;
+ rs->sr_err = LDAP_SUCCESS;
+ *binddn = slap_empty_bv;
+ *bindcred = slap_empty_bv;
+ break;
}
+
+ goto done;
}
}
- lc->bound = 0;
+ *binddn = li->li_idassert_authcDN;
+ *bindcred = li->li_idassert_passwd;
+ dobind = 1;
+ break;
+ }
- /* Inserts the newly created ldapconn in the avl tree */
- ldap_pvt_thread_mutex_lock( &li->conn_mutex );
- rs->sr_err = avl_insert( &li->conntree, (caddr_t)lc,
- ldap_back_conn_cmp, ldap_back_conn_dup );
+done:;
+ return dobind;
+}
-#if PRINT_CONNTREE > 0
- myprint( li->conntree );
-#endif /* PRINT_CONNTREE */
-
- ldap_pvt_thread_mutex_unlock( &li->conn_mutex );
+static int
+ldap_back_proxy_authz_bind(
+ ldapconn_t *lc,
+ Operation *op,
+ SlapReply *rs,
+ ldap_back_send_t sendok,
+ struct berval *binddn,
+ struct berval *bindcred )
+{
+ ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
+ struct berval ndn;
+ int msgid;
+ int rc;
+
+ if ( !BER_BVISNULL( &op->o_conn->c_ndn ) ) {
+ ndn = op->o_conn->c_ndn;
-#ifdef NEW_LOGGING
- LDAP_LOG( BACK_LDAP, INFO,
- "ldap_back_getconn: conn %p inserted\n", (void *) lc, 0, 0);
-#else /* !NEW_LOGGING */
- Debug( LDAP_DEBUG_TRACE,
- "=>ldap_back_getconn: conn %p inserted\n", (void *) lc, 0, 0 );
-#endif /* !NEW_LOGGING */
-
- /* Err could be -1 in case a duplicate ldapconn is inserted */
- if ( rs->sr_err != 0 ) {
- ldap_back_conn_free( lc );
- if (op->o_conn) {
- send_ldap_error( op, rs, LDAP_OTHER,
- "internal server error" );
- }
- return( NULL );
- }
} else {
-#ifdef NEW_LOGGING
- LDAP_LOG( BACK_LDAP, INFO,
- "ldap_back_getconn: conn %p fetched\n",
- (void *) lc, 0, 0 );
-#else /* !NEW_LOGGING */
- Debug( LDAP_DEBUG_TRACE,
- "=>ldap_back_getconn: conn %p fetched\n", (void *) lc, 0, 0 );
-#endif /* !NEW_LOGGING */
+ ndn = op->o_ndn;
}
-
- return( lc );
-}
-/*
- * ldap_back_dobind
- *
- * Note: as the check for the value of lc->bound was already here, I removed
- * it from all the callers, and I made the function return the flag, so
- * it can be used to simplify the check.
- */
-int
-ldap_back_dobind( struct ldapconn *lc, Operation *op, SlapReply *rs )
-{
- struct ldapinfo *li = (struct ldapinfo *)op->o_bd->be_private;
- int rc;
- ber_int_t msgid;
+ if ( li->li_idassert_authmethod == LDAP_AUTH_SASL ) {
+#ifdef HAVE_CYRUS_SASL
+ void *defaults = NULL;
+ struct berval authzID = BER_BVNULL;
+ int freeauthz = 0;
- ldap_pvt_thread_mutex_lock( &lc->lc_mutex );
- if ( !lc->bound ) {
-#ifdef LDAP_BACK_PROXY_AUTHZ
- /*
- * FIXME: we need to let clients use proxyAuthz
- * otherwise we cannot do symmetric pools of servers;
- * we have to live with the fact that a user can
- * authorize itself as any ID that is allowed
- * by the authzTo directive of the "proxyauthzdn".
- */
- /*
- * NOTE: current Proxy Authorization specification
- * and implementation do not allow proxy authorization
- * control to be provided with Bind requests
- */
- /*
- * if no bind took place yet, but the connection is bound
- * and the "proxyauthzdn" is set, then bind as
- * "proxyauthzdn" and explicitly add the proxyAuthz
- * control to every operation with the dn bound
- * to the connection as control value.
- */
- if ( op->o_conn != NULL && BER_BVISNULL( &lc->bound_dn ) ) {
- struct berval binddn = slap_empty_bv;
- struct berval bindcred = slap_empty_bv;
- int dobind = 0;
-
- /* bind as proxyauthzdn only if no idassert mode
- * is requested, or if the client's identity
- * is authorized */
- switch ( li->idassert_mode ) {
- case LDAP_BACK_IDASSERT_LEGACY:
- if ( !BER_BVISNULL( &op->o_conn->c_dn ) && !BER_BVISEMPTY( &op->o_conn->c_dn ) ) {
- if ( !BER_BVISNULL( &li->idassert_authcDN ) && !BER_BVISEMPTY( &li->idassert_authcDN ) )
- {
- binddn = li->idassert_authcDN;
- bindcred = li->idassert_passwd;
- dobind = 1;
- }
- }
+ /* if SASL supports native authz, prepare for it */
+ if ( ( !op->o_do_not_cache || !op->o_is_auth_check ) &&
+ ( li->li_idassert_flags & LDAP_BACK_AUTH_NATIVE_AUTHZ ) )
+ {
+ switch ( li->li_idassert_mode ) {
+ case LDAP_BACK_IDASSERT_OTHERID:
+ case LDAP_BACK_IDASSERT_OTHERDN:
+ authzID = li->li_idassert_authzID;
break;
- default:
- if ( li->idassert_authz ) {
- struct berval authcDN = BER_BVISNULL( &op->o_conn->c_dn ) ? slap_empty_bv : op->o_conn->c_dn;
+ case LDAP_BACK_IDASSERT_ANONYMOUS:
+ BER_BVSTR( &authzID, "dn:" );
+ break;
- rs->sr_err = slap_sasl_matches( op, li->idassert_authz,
- &authcDN, &authcDN );
- if ( rs->sr_err != LDAP_SUCCESS ) {
- send_ldap_result( op, rs );
- lc->bound = 0;
- goto done;
- }
+ case LDAP_BACK_IDASSERT_SELF:
+ if ( BER_BVISNULL( &ndn ) ) {
+ /* connection is not authc'd, so don't idassert */
+ BER_BVSTR( &authzID, "dn:" );
+ break;
}
+ authzID.bv_len = STRLENOF( "dn:" ) + ndn.bv_len;
+ authzID.bv_val = slap_sl_malloc( authzID.bv_len + 1, op->o_tmpmemctx );
+ AC_MEMCPY( authzID.bv_val, "dn:", STRLENOF( "dn:" ) );
+ AC_MEMCPY( authzID.bv_val + STRLENOF( "dn:" ),
+ ndn.bv_val, ndn.bv_len + 1 );
+ freeauthz = 1;
+ break;
- binddn = li->idassert_authcDN;
- bindcred = li->idassert_passwd;
- dobind = 1;
+ default:
break;
}
+ }
- if ( dobind && li->idassert_authmethod == LDAP_AUTH_SASL ) {
-#ifdef HAVE_CYRUS_SASL
- void *defaults = NULL;
- struct berval authzID = BER_BVNULL;
- int freeauthz = 0;
-
- /* if SASL supports native authz, prepare for it */
- if ( ( !op->o_do_not_cache || !op->o_is_auth_check ) &&
- ( li->idassert_flags & LDAP_BACK_AUTH_NATIVE_AUTHZ ) )
- {
- switch ( li->idassert_mode ) {
- case LDAP_BACK_IDASSERT_OTHERID:
- case LDAP_BACK_IDASSERT_OTHERDN:
- authzID = li->idassert_authzID;
- break;
-
- case LDAP_BACK_IDASSERT_ANONYMOUS:
- BER_BVSTR( &authzID, "dn:" );
- break;
-
- case LDAP_BACK_IDASSERT_SELF:
- if ( BER_BVISNULL( &op->o_conn->c_dn ) ) {
- /* connection is not authc'd, so don't idassert */
- BER_BVSTR( &authzID, "dn:" );
- break;
- }
- authzID.bv_len = STRLENOF( "dn:" ) + op->o_conn->c_dn.bv_len;
- authzID.bv_val = slap_sl_malloc( authzID.bv_len + 1, op->o_tmpmemctx );
- AC_MEMCPY( authzID.bv_val, "dn:", STRLENOF( "dn:" ) );
- AC_MEMCPY( authzID.bv_val + STRLENOF( "dn:" ),
- op->o_conn->c_dn.bv_val, op->o_conn->c_dn.bv_len + 1 );
- freeauthz = 1;
- break;
-
- default:
- break;
- }
- }
-
-#if 0 /* will deal with this later... */
- if ( sasl_secprops != NULL ) {
- rs->sr_err = ldap_set_option( lc->ld, LDAP_OPT_X_SASL_SECPROPS,
- (void *) sasl_secprops );
-
- if ( rs->sr_err != LDAP_OPT_SUCCESS ) {
- send_ldap_result( op, rs );
- lc->bound = 0;
- goto done;
-
- }
- }
-#endif
-
- defaults = lutil_sasl_defaults( lc->ld,
- li->idassert_sasl_mech.bv_val,
- li->idassert_sasl_realm.bv_val,
- li->idassert_authcID.bv_val,
- li->idassert_passwd.bv_val,
- authzID.bv_val );
-
- rs->sr_err = ldap_sasl_interactive_bind_s( lc->ld, binddn.bv_val,
- li->idassert_sasl_mech.bv_val, NULL, NULL,
- li->idassert_sasl_flags, lutil_sasl_interact,
- defaults );
-
- lutil_sasl_freedefs( defaults );
- if ( freeauthz ) {
- slap_sl_free( authzID.bv_val, op->o_tmpmemctx );
- }
+ if ( li->li_idassert_secprops != NULL ) {
+ rs->sr_err = ldap_set_option( lc->lc_ld,
+ LDAP_OPT_X_SASL_SECPROPS,
+ (void *)li->li_idassert_secprops );
- rs->sr_err = slap_map_api2result( rs );
- if ( rs->sr_err != LDAP_SUCCESS ) {
- lc->bound = 0;
+ if ( rs->sr_err != LDAP_OPT_SUCCESS ) {
+ rs->sr_err = LDAP_OTHER;
+ if ( sendok & LDAP_BACK_SENDERR ) {
send_ldap_result( op, rs );
-
- } else {
- lc->bound = 1;
}
+ LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
goto done;
-#endif /* HAVE_CYRUS_SASL */
}
+ }
- switch ( li->idassert_authmethod ) {
- case LDAP_AUTH_SIMPLE:
- rs->sr_err = ldap_sasl_bind(lc->ld,
- binddn.bv_val, LDAP_SASL_SIMPLE,
- &bindcred, NULL, NULL, &msgid);
- break;
-
- case LDAP_AUTH_NONE:
- lc->bound = 1;
- goto done;
-
- default:
- /* unsupported! */
- lc->bound = 0;
- rs->sr_err = LDAP_AUTH_METHOD_NOT_SUPPORTED;
+ defaults = lutil_sasl_defaults( lc->lc_ld,
+ li->li_idassert_sasl_mech.bv_val,
+ li->li_idassert_sasl_realm.bv_val,
+ li->li_idassert_authcID.bv_val,
+ li->li_idassert_passwd.bv_val,
+ authzID.bv_val );
+
+ rs->sr_err = ldap_sasl_interactive_bind_s( lc->lc_ld, binddn->bv_val,
+ li->li_idassert_sasl_mech.bv_val, NULL, NULL,
+ LDAP_SASL_QUIET, lutil_sasl_interact,
+ defaults );
+
+ switch ( rs->sr_err ) {
+ case LDAP_SUCCESS:
+ LDAP_BACK_CONN_ISBOUND_SET( lc );
+ break;
+
+ case LDAP_LOCAL_ERROR:
+ /* list client API error codes that require
+ * to taint the connection */
+ /* FIXME: should actually retry? */
+ LDAP_BACK_CONN_TAINTED_SET( lc );
+
+ /* fallthru */
+
+ default:
+ LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
+ rs->sr_err = slap_map_api2result( rs );
+ if ( sendok & LDAP_BACK_SENDERR ) {
send_ldap_result( op, rs );
- goto done;
}
-
- } else
-#endif /* LDAP_BACK_PROXY_AUTHZ */
- {
- rs->sr_err = ldap_sasl_bind(lc->ld, lc->bound_dn.bv_val,
- LDAP_SASL_SIMPLE, &lc->cred, NULL, NULL, &msgid);
- }
-
- rc = ldap_back_op_result( lc, op, rs, msgid, 0 );
- if (rc == LDAP_SUCCESS) {
- lc->bound = 1;
+ break;
}
- }
-done:;
- rc = lc->bound;
- ldap_pvt_thread_mutex_unlock( &lc->lc_mutex );
- return rc;
-}
+ lutil_sasl_freedefs( defaults );
+ if ( freeauthz ) {
+ slap_sl_free( authzID.bv_val, op->o_tmpmemctx );
+ }
-/*
- * ldap_back_rebind
- *
- * This is a callback used for chasing referrals using the same
- * credentials as the original user on this session.
- */
-static int
-ldap_back_rebind( LDAP *ld, LDAP_CONST char *url, ber_tag_t request,
- ber_int_t msgid, void *params )
-{
- struct ldapconn *lc = params;
+ goto done;
+#endif /* HAVE_CYRUS_SASL */
+ }
- return ldap_bind_s( ld, lc->bound_dn.bv_val, lc->cred.bv_val, LDAP_AUTH_SIMPLE );
-}
+ switch ( li->li_idassert_authmethod ) {
+ case LDAP_AUTH_NONE:
+ /* FIXME: do we really need this? */
+ BER_BVSTR( binddn, "" );
+ BER_BVSTR( bindcred, "" );
+ /* fallthru */
+
+ case LDAP_AUTH_SIMPLE:
+ rs->sr_err = ldap_sasl_bind( lc->lc_ld,
+ binddn->bv_val, LDAP_SASL_SIMPLE,
+ bindcred, NULL, NULL, &msgid );
+ rc = ldap_back_op_result( lc, op, rs, msgid,
+ -1, ( sendok | LDAP_BACK_BINDING ) );
+ break;
-#if 0 /* deprecated in favour of slap_map_api2result() */
-/* Map API errors to protocol errors... */
-int
-ldap_back_map_result( SlapReply *rs )
-{
- switch(rs->sr_err)
- {
- case LDAP_SERVER_DOWN:
- return LDAP_UNAVAILABLE;
- case LDAP_LOCAL_ERROR:
- return LDAP_OTHER;
- case LDAP_ENCODING_ERROR:
- case LDAP_DECODING_ERROR:
- return LDAP_PROTOCOL_ERROR;
- case LDAP_TIMEOUT:
- return LDAP_UNAVAILABLE;
- case LDAP_AUTH_UNKNOWN:
- return LDAP_AUTH_METHOD_NOT_SUPPORTED;
- case LDAP_FILTER_ERROR:
- rs->sr_text = "Filter error";
- return LDAP_OTHER;
- case LDAP_USER_CANCELLED:
- rs->sr_text = "User cancelled";
- return LDAP_OTHER;
- case LDAP_PARAM_ERROR:
- return LDAP_PROTOCOL_ERROR;
- case LDAP_NO_MEMORY:
- return LDAP_OTHER;
- case LDAP_CONNECT_ERROR:
- return LDAP_UNAVAILABLE;
- case LDAP_NOT_SUPPORTED:
- return LDAP_UNWILLING_TO_PERFORM;
- case LDAP_CONTROL_NOT_FOUND:
- return LDAP_PROTOCOL_ERROR;
- case LDAP_NO_RESULTS_RETURNED:
- return LDAP_NO_SUCH_OBJECT;
- case LDAP_MORE_RESULTS_TO_RETURN:
- rs->sr_text = "More results to return";
- return LDAP_OTHER;
- case LDAP_CLIENT_LOOP:
- case LDAP_REFERRAL_LIMIT_EXCEEDED:
- return LDAP_LOOP_DETECT;
default:
- if ( LDAP_API_ERROR(rs->sr_err) )
- return LDAP_OTHER;
- return rs->sr_err;
+ /* unsupported! */
+ LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
+ rs->sr_err = LDAP_AUTH_METHOD_NOT_SUPPORTED;
+ if ( sendok & LDAP_BACK_SENDERR ) {
+ send_ldap_result( op, rs );
+ }
+ goto done;
}
-}
-#endif
-
-int
-ldap_back_op_result(struct ldapconn *lc, Operation *op, SlapReply *rs,
- ber_int_t msgid, int sendok)
-{
- struct ldapinfo *li = (struct ldapinfo *)op->o_bd->be_private;
- char *match = NULL;
- LDAPMessage *res = NULL;
- char *text = NULL;
-#define ERR_OK(err) ((err) == LDAP_SUCCESS || (err) == LDAP_COMPARE_FALSE || (err) == LDAP_COMPARE_TRUE)
-
- rs->sr_text = NULL;
- rs->sr_matched = NULL;
-
- /* if the error recorded in the reply corresponds
- * to a successful state, get the error from the
- * remote server response */
- if ( ERR_OK( rs->sr_err ) ) {
- /* if result parsing fails, note the failure reason */
- if ( ldap_result( lc->ld, msgid, 1, NULL, &res ) == -1 ) {
- ldap_get_option( lc->ld, LDAP_OPT_ERROR_NUMBER,
- &rs->sr_err );
+ if ( rc == LDAP_SUCCESS ) {
+ /* set rebind stuff in case of successful proxyAuthz bind,
+ * so that referral chasing is attempted using the right
+ * identity */
+ LDAP_BACK_CONN_ISBOUND_SET( lc );
+ ber_bvreplace( &lc->lc_bound_ndn, binddn );
- /* otherwise get the result; if it is not
- * LDAP_SUCCESS, record it in the reply
- * structure (this includes
- * LDAP_COMPARE_{TRUE|FALSE}) */
- } else {
- int rc = ldap_parse_result( lc->ld, res, &rs->sr_err,
- &match, &text, NULL, NULL, 1 );
- rs->sr_text = text;
- if ( rc != LDAP_SUCCESS ) rs->sr_err = rc;
+ if ( !BER_BVISNULL( &lc->lc_cred ) ) {
+ memset( lc->lc_cred.bv_val, 0,
+ lc->lc_cred.bv_len );
}
- }
-
- /* if the error in the reply structure is not
- * LDAP_SUCCESS, try to map it from client
- * to server error */
- if ( !ERR_OK( rs->sr_err ) ) {
- rs->sr_err = slap_map_api2result( rs );
- /* internal ops ( op->o_conn == NULL )
- * must not reply to client */
- if ( op->o_conn && !op->o_do_not_cache && match ) {
- struct berval dn, mdn;
- dncookie dc;
-
- dc.rwmap = &li->rwmap;
-#ifdef ENABLE_REWRITE
- dc.conn = op->o_conn;
- dc.rs = rs;
- dc.ctx = "matchedDN";
-#else
- dc.tofrom = 0;
- dc.normalized = 0;
-#endif
- ber_str2bv(match, 0, 0, &dn);
- ldap_back_dn_massage(&dc, &dn, &mdn);
+ if ( LDAP_BACK_SAVECRED( li ) ) {
+ ber_bvreplace( &lc->lc_cred, bindcred );
+ ldap_set_rebind_proc( lc->lc_ld, li->li_rebind_f, lc );
- /* record the (massaged) matched
- * DN into the reply structure */
- rs->sr_matched = mdn.bv_val;
-
- }
- }
- if ( op->o_conn && ( sendok || rs->sr_err != LDAP_SUCCESS ) ) {
- send_ldap_result( op, rs );
- }
- if ( match ) {
- if ( rs->sr_matched != match ) {
- free( (char *)rs->sr_matched );
+ } else {
+ lc->lc_cred.bv_len = 0;
}
- rs->sr_matched = NULL;
- ldap_memfree( match );
- }
- if ( text ) {
- ldap_memfree( text );
}
- rs->sr_text = NULL;
- return( ERR_OK( rs->sr_err ) ? 0 : -1 );
+done:;
+ return LDAP_BACK_CONN_ISBOUND( lc );
}
-#ifdef LDAP_BACK_PROXY_AUTHZ
/*
* ldap_back_proxy_authz_ctrl() prepends a proxyAuthz control
* to existing server-side controls if required; if not,
* If no server-side controls are defined for the operation,
* simply add the proxyAuthz control; otherwise, if the
* proxyAuthz control is not already set, add it as
- * the first one (FIXME: is controls order significant
- * for security?).
+ * the first one
+ *
+ * FIXME: is controls order significant for security?
+ * ANSWER: controls ordering and interoperability
+ * must be indicated by the specs of each control; if none
+ * is specified, the order is irrelevant.
*/
int
ldap_back_proxy_authz_ctrl(
- struct ldapconn *lc,
+ struct berval *bound_ndn,
+ int version,
+ slap_idassert_t *si,
Operation *op,
SlapReply *rs,
LDAPControl ***pctrls )
{
- struct ldapinfo *li = (struct ldapinfo *) op->o_bd->be_private;
- LDAPControl **ctrls = NULL;
- int i = 0,
- mode;
- struct berval assertedID;
+ LDAPControl **ctrls = NULL;
+ int i = 0;
+ slap_idassert_mode_t mode;
+ struct berval assertedID,
+ ndn;
+ int isroot = 0;
*pctrls = NULL;
- if ( ( BER_BVISNULL( &li->idassert_authcID ) || BER_BVISEMPTY( &li->idassert_authcID ) )
- && ( BER_BVISNULL( &li->idassert_authcDN ) || BER_BVISEMPTY( &li->idassert_authcDN ) ) ) {
+ rs->sr_err = LDAP_SUCCESS;
+
+ /* don't proxyAuthz if protocol is not LDAPv3 */
+ switch ( version ) {
+ case LDAP_VERSION3:
+ break;
+
+ case 0:
+ if ( op->o_protocol == 0 || op->o_protocol == LDAP_VERSION3 ) {
+ break;
+ }
+ /* fall thru */
+
+ default:
+ goto done;
+ }
+
+ /* FIXME: SASL/EXTERNAL over ldapi:// doesn't honor the authcID,
+ * but if it is not set this test fails. We need a different
+ * means to detect if idassert is enabled */
+ if ( ( BER_BVISNULL( &si->si_bc.sb_authcId ) || BER_BVISEMPTY( &si->si_bc.sb_authcId ) )
+ && ( BER_BVISNULL( &si->si_bc.sb_binddn ) || BER_BVISEMPTY( &si->si_bc.sb_binddn ) )
+ && BER_BVISNULL( &si->si_bc.sb_saslmech ) )
+ {
goto done;
}
- if ( !op->o_conn ) {
+ if ( !op->o_conn || op->o_do_not_cache || ( isroot = be_isroot( op ) ) ) {
goto done;
}
- if ( li->idassert_mode == LDAP_BACK_IDASSERT_LEGACY ) {
+ if ( op->o_tag == LDAP_REQ_BIND ) {
+ ndn = op->o_req_ndn;
+
+ } else if ( !BER_BVISNULL( &op->o_conn->c_ndn ) ) {
+ ndn = op->o_conn->c_ndn;
+
+ } else {
+ ndn = op->o_ndn;
+ }
+
+ if ( si->si_mode == LDAP_BACK_IDASSERT_LEGACY ) {
if ( op->o_proxy_authz ) {
/*
* FIXME: we do not want to perform proxyAuthz
goto done;
}
- if ( !BER_BVISNULL( &lc->bound_dn ) ) {
+ if ( !BER_BVISNULL( bound_ndn ) ) {
goto done;
}
- if ( BER_BVISNULL( &op->o_conn->c_dn ) ) {
+ if ( BER_BVISNULL( &ndn ) ) {
goto done;
}
- if ( BER_BVISNULL( &li->idassert_authcDN ) ) {
+ if ( BER_BVISNULL( &si->si_bc.sb_binddn ) ) {
goto done;
}
- } else if ( li->idassert_authmethod == LDAP_AUTH_SASL ) {
- if ( ( li->idassert_flags & LDAP_BACK_AUTH_NATIVE_AUTHZ )
- /* && ( !BER_BVISNULL( &op->o_conn->c_dn ) || lc->bound ) */ )
+ } else if ( si->si_bc.sb_method == LDAP_AUTH_SASL ) {
+ if ( ( si->si_flags & LDAP_BACK_AUTH_NATIVE_AUTHZ ) )
{
/* already asserted in SASL via native authz */
- /* NOTE: the test on lc->bound is used to trap
- * native authorization of anonymous users,
- * since in that case op->o_conn->c_dn is NULL */
goto done;
}
- } else if ( li->idassert_authz ) {
+ } else if ( si->si_authz && !isroot ) {
int rc;
- struct berval authcDN = BER_BVISNULL( &op->o_conn->c_dn ) ? slap_empty_bv : op->o_conn->c_dn;
-
+ struct berval authcDN;
- rc = slap_sasl_matches( op, li->idassert_authz,
+ if ( BER_BVISNULL( &ndn ) ) {
+ authcDN = slap_empty_bv;
+ } else {
+ authcDN = ndn;
+ }
+ rc = slap_sasl_matches( op, si->si_authz,
&authcDN, & authcDN );
if ( rc != LDAP_SUCCESS ) {
- /* op->o_conn->c_dn is not authorized
- * to use idassert */
- return rc;
+ if ( si->si_flags & LDAP_BACK_AUTH_PRESCRIPTIVE ) {
+ /* ndn is not authorized
+ * to use idassert */
+ rs->sr_err = rc;
+ }
+ goto done;
}
}
rs->sr_text = "proxyAuthz not allowed within namingContext";
}
- if ( op->o_do_not_cache && op->o_is_auth_check ) {
+ if ( op->o_is_auth_check ) {
mode = LDAP_BACK_IDASSERT_NOASSERT;
} else {
- mode = li->idassert_mode;
+ mode = si->si_mode;
}
switch ( mode ) {
case LDAP_BACK_IDASSERT_LEGACY:
- case LDAP_BACK_IDASSERT_SELF:
/* original behavior:
* assert the client's identity */
- assertedID = BER_BVISNULL( &op->o_conn->c_dn ) ? slap_empty_bv : op->o_conn->c_dn;
+ case LDAP_BACK_IDASSERT_SELF:
+ assertedID = ndn;
break;
case LDAP_BACK_IDASSERT_ANONYMOUS:
case LDAP_BACK_IDASSERT_OTHERID:
case LDAP_BACK_IDASSERT_OTHERDN:
/* assert idassert DN */
- assertedID = li->idassert_authzID;
+ assertedID = si->si_bc.sb_authzId;
break;
default:
assert( 0 );
}
+ /* if we got here, "" is allowed to proxyAuthz */
if ( BER_BVISNULL( &assertedID ) ) {
assertedID = slap_empty_bv;
}
- ctrls = ch_malloc( sizeof( LDAPControl * ) * (i + 2) );
- ctrls[ 0 ] = ch_malloc( sizeof( LDAPControl ) );
+ /* don't idassert the bound DN (ITS#4497) */
+ if ( dn_match( &assertedID, bound_ndn ) ) {
+ goto done;
+ }
+
+ if ( op->o_ctrls ) {
+ for ( i = 0; op->o_ctrls[ i ]; i++ )
+ /* just count ctrls */ ;
+ }
+
+ ctrls = op->o_tmpalloc( sizeof( LDAPControl * ) * (i + 2) + sizeof( LDAPControl ),
+ op->o_tmpmemctx );
+ ctrls[ 0 ] = (LDAPControl *)&ctrls[ i + 2 ];
ctrls[ 0 ]->ldctl_oid = LDAP_CONTROL_PROXY_AUTHZ;
ctrls[ 0 ]->ldctl_iscritical = 1;
- switch ( li->idassert_mode ) {
+ switch ( si->si_mode ) {
/* already in u:ID or dn:DN form */
case LDAP_BACK_IDASSERT_OTHERID:
case LDAP_BACK_IDASSERT_OTHERDN:
- ber_dupbv( &ctrls[ 0 ]->ldctl_value, &assertedID );
+ ber_dupbv_x( &ctrls[ 0 ]->ldctl_value, &assertedID, op->o_tmpmemctx );
break;
/* needs the dn: prefix */
default:
ctrls[ 0 ]->ldctl_value.bv_len = assertedID.bv_len + STRLENOF( "dn:" );
- ctrls[ 0 ]->ldctl_value.bv_val = ch_malloc( ctrls[ 0 ]->ldctl_value.bv_len + 1 );
+ ctrls[ 0 ]->ldctl_value.bv_val = op->o_tmpalloc( ctrls[ 0 ]->ldctl_value.bv_len + 1,
+ op->o_tmpmemctx );
AC_MEMCPY( ctrls[ 0 ]->ldctl_value.bv_val, "dn:", STRLENOF( "dn:" ) );
- AC_MEMCPY( ctrls[ 0 ]->ldctl_value.bv_val + STRLENOF( "dn:" ),
+ AC_MEMCPY( &ctrls[ 0 ]->ldctl_value.bv_val[ STRLENOF( "dn:" ) ],
assertedID.bv_val, assertedID.bv_len + 1 );
break;
}
+ /* Older versions of <draft-weltman-ldapv3-proxy> required
+ * to encode the value of the authzID (and called it proxyDN);
+ * this hack provides compatibility with those DSAs that
+ * implement it this way */
+ if ( si->si_flags & LDAP_BACK_AUTH_OBSOLETE_ENCODING_WORKAROUND ) {
+ struct berval authzID = ctrls[ 0 ]->ldctl_value;
+ BerElementBuffer berbuf;
+ BerElement *ber = (BerElement *)&berbuf;
+ ber_tag_t tag;
+
+ ber_init2( ber, 0, LBER_USE_DER );
+ ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
+
+ tag = ber_printf( ber, "O", &authzID );
+ if ( tag == LBER_ERROR ) {
+ rs->sr_err = LDAP_OTHER;
+ goto free_ber;
+ }
+
+ if ( ber_flatten2( ber, &ctrls[ 0 ]->ldctl_value, 1 ) == -1 ) {
+ rs->sr_err = LDAP_OTHER;
+ goto free_ber;
+ }
+
+free_ber:;
+ op->o_tmpfree( authzID.bv_val, op->o_tmpmemctx );
+ ber_free_buf( ber );
+
+ if ( rs->sr_err != LDAP_SUCCESS ) {
+ op->o_tmpfree( ctrls, op->o_tmpmemctx );
+ ctrls = NULL;
+ goto done;
+ }
+
+ } else if ( si->si_flags & LDAP_BACK_AUTH_OBSOLETE_PROXY_AUTHZ ) {
+ struct berval authzID = ctrls[ 0 ]->ldctl_value,
+ tmp;
+ BerElementBuffer berbuf;
+ BerElement *ber = (BerElement *)&berbuf;
+ ber_tag_t tag;
+
+ if ( strncasecmp( authzID.bv_val, "dn:", STRLENOF( "dn:" ) ) != 0 ) {
+ op->o_tmpfree( ctrls[ 0 ]->ldctl_value.bv_val, op->o_tmpmemctx );
+ op->o_tmpfree( ctrls, op->o_tmpmemctx );
+ ctrls = NULL;
+ rs->sr_err = LDAP_PROTOCOL_ERROR;
+ goto done;
+ }
+
+ tmp = authzID;
+ tmp.bv_val += STRLENOF( "dn:" );
+ tmp.bv_len -= STRLENOF( "dn:" );
+
+ ber_init2( ber, 0, LBER_USE_DER );
+ ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
+
+ /* apparently, Mozilla API encodes this
+ * as "SEQUENCE { LDAPDN }" */
+ tag = ber_printf( ber, "{O}", &tmp );
+ if ( tag == LBER_ERROR ) {
+ rs->sr_err = LDAP_OTHER;
+ goto free_ber2;
+ }
+
+ if ( ber_flatten2( ber, &ctrls[ 0 ]->ldctl_value, 1 ) == -1 ) {
+ rs->sr_err = LDAP_OTHER;
+ goto free_ber2;
+ }
+
+free_ber2:;
+ op->o_tmpfree( authzID.bv_val, op->o_tmpmemctx );
+ ber_free_buf( ber );
+
+ if ( rs->sr_err != LDAP_SUCCESS ) {
+ op->o_tmpfree( ctrls, op->o_tmpmemctx );
+ ctrls = NULL;
+ goto done;
+ }
+
+ ctrls[ 0 ]->ldctl_oid = LDAP_CONTROL_OBSOLETE_PROXY_AUTHZ;
+ }
+
if ( op->o_ctrls ) {
for ( i = 0; op->o_ctrls[ i ]; i++ ) {
ctrls[ i + 1 ] = op->o_ctrls[ i ];
return rs->sr_err;
}
-#endif /* LDAP_BACK_PROXY_AUTHZ */
+
+int
+ldap_back_proxy_authz_ctrl_free( Operation *op, LDAPControl ***pctrls )
+{
+ LDAPControl **ctrls = *pctrls;
+
+ /* we assume that the first control is the proxyAuthz
+ * added by back-ldap, so it's the only one we explicitly
+ * free */
+ if ( ctrls && ctrls != op->o_ctrls ) {
+ assert( ctrls[ 0 ] != NULL );
+
+ if ( !BER_BVISNULL( &ctrls[ 0 ]->ldctl_value ) ) {
+ op->o_tmpfree( ctrls[ 0 ]->ldctl_value.bv_val, op->o_tmpmemctx );
+ }
+
+ op->o_tmpfree( ctrls, op->o_tmpmemctx );
+ }
+
+ *pctrls = NULL;
+
+ return 0;
+}
projects / openldap / blobdiff