]> git.sur5r.net Git - openldap/blobdiff - servers/slapd/bind.c
Merge remote branch 'origin/mdb.master'
[openldap] / servers / slapd / bind.c
index 4d96e0431efc685f3020e22762a0880268f10b28..daa473859c9a602927ef1ce64ae288915cd32934 100644 (file)
@@ -1,12 +1,19 @@
 /* bind.c - decode an ldap bind operation and pass it to a backend db */
 /* $OpenLDAP$ */
-/*
- * Copyright 1998-2000 The OpenLDAP Foundation, All Rights Reserved.
- * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 1998-2012 The OpenLDAP Foundation.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
  */
-
-/*
- * Copyright (c) 1995 Regents of the University of Michigan.
+/* Portions Copyright (c) 1995 Regents of the University of Michigan.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms are permitted
 #include <ac/string.h>
 #include <ac/socket.h>
 
-#include "ldap_pvt.h"
 #include "slap.h"
 
 int
 do_bind(
-    Connection *conn,
-    Operation  *op
-)
+    Operation  *op,
+    SlapReply  *rs )
 {
-       BerElement      *ber = op->o_ber;
-       ber_int_t               version;
+       BerElement *ber = op->o_ber;
+       ber_int_t version;
        ber_tag_t method;
-       char            *mech;
-       char            *saslmech;
-       char            *dn;
-       char *ndn;
-       ber_tag_t       tag;
-       int                     rc = LDAP_SUCCESS;
-       const char      *text;
-       struct berval   cred;
-       Backend         *be;
-
-       Debug( LDAP_DEBUG_TRACE, "do_bind\n", 0, 0, 0 );
-
-       dn = NULL;
-       ndn = NULL;
-       mech = NULL;
-       cred.bv_val = NULL;
+       struct berval mech = BER_BVNULL;
+       struct berval dn = BER_BVNULL;
+       ber_tag_t tag;
+       Backend *be = NULL;
+
+       Debug( LDAP_DEBUG_TRACE, "%s do_bind\n",
+               op->o_log_prefix, 0, 0 );
 
        /*
-        * Force to connection to "anonymous" until bind succeeds.
+        * Force the connection to "anonymous" until bind succeeds.
         */
-       ldap_pvt_thread_mutex_lock( &conn->c_mutex );
-       connection2anonymous( conn );
-       ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
-
-       if ( op->o_dn != NULL ) {
-               free( op->o_dn );
-               op->o_dn = ch_strdup( "" );
+       ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
+       if ( op->o_conn->c_sasl_bind_in_progress ) {
+               be = op->o_conn->c_authz_backend;
        }
-
-       if ( op->o_ndn != NULL ) {
-               free( op->o_ndn );
-               op->o_ndn = ch_strdup( "" );
+       if ( !BER_BVISEMPTY( &op->o_conn->c_dn ) ) {
+               /* log authorization identity demotion */
+               Statslog( LDAP_DEBUG_STATS,
+                       "%s BIND anonymous mech=implicit ssf=0\n",
+                       op->o_log_prefix, 0, 0, 0, 0 );
+       }
+       connection2anonymous( op->o_conn );
+       if ( op->o_conn->c_sasl_bind_in_progress ) {
+               op->o_conn->c_authz_backend = be;
+       }
+       ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
+       if ( !BER_BVISNULL( &op->o_dn ) ) {
+               /* NOTE: temporarily wasting few bytes
+                * (until bind is completed), but saving
+                * a couple of ch_free() and ch_strdup("") */ 
+               op->o_dn.bv_val[0] = '\0';
+               op->o_dn.bv_len = 0;
+       }
+       if ( !BER_BVISNULL( &op->o_ndn ) ) {
+               op->o_ndn.bv_val[0] = '\0';
+               op->o_ndn.bv_len = 0;
        }
 
        /*
@@ -78,46 +87,46 @@ do_bind(
         *              name            DistinguishedName,       -- dn
         *              authentication  CHOICE {
         *                      simple          [0] OCTET STRING -- passwd
-        *                      krbv42ldap      [1] OCTET STRING
-        *                      krbv42dsa       [2] OCTET STRING
+        *                      krbv42ldap      [1] OCTET STRING -- OBSOLETE
+        *                      krbv42dsa       [2] OCTET STRING -- OBSOLETE
         *                      SASL            [3] SaslCredentials
         *              }
         *      }
         *
         *      SaslCredentials ::= SEQUENCE {
-     *         mechanism           LDAPString,
-     *         credentials         OCTET STRING OPTIONAL
+        *              mechanism           LDAPString,
+        *              credentials         OCTET STRING OPTIONAL
         *      }
         */
 
-       tag = ber_scanf( ber, "{iat" /*}*/, &version, &dn, &method );
+       tag = ber_scanf( ber, "{imt" /*}*/, &version, &dn, &method );
 
        if ( tag == LBER_ERROR ) {
-               Debug( LDAP_DEBUG_ANY, "bind: ber_scanf failed\n", 0, 0, 0 );
-               send_ldap_disconnect( conn, op,
-                       LDAP_PROTOCOL_ERROR, "decoding error" );
-               rc = -1;
+               Debug( LDAP_DEBUG_ANY, "%s do_bind: ber_scanf failed\n",
+                       op->o_log_prefix, 0, 0 );
+               send_ldap_discon( op, rs, LDAP_PROTOCOL_ERROR, "decoding error" );
+               rs->sr_err = SLAPD_DISCONNECT;
                goto cleanup;
        }
 
        op->o_protocol = version;
+       op->orb_method = method;
 
-       if( method != LDAP_AUTH_SASL ) {
-               tag = ber_scanf( ber, /*{*/ "o}", &cred );
+       if( op->orb_method != LDAP_AUTH_SASL ) {
+               tag = ber_scanf( ber, /*{*/ "m}", &op->orb_cred );
 
        } else {
-               tag = ber_scanf( ber, "{a" /*}*/, &mech );
+               tag = ber_scanf( ber, "{m" /*}*/, &mech );
 
                if ( tag != LBER_ERROR ) {
                        ber_len_t len;
                        tag = ber_peek_tag( ber, &len );
 
                        if ( tag == LDAP_TAG_LDAPCRED ) { 
-                               tag = ber_scanf( ber, "o", &cred );
+                               tag = ber_scanf( ber, "m", &op->orb_cred );
                        } else {
                                tag = LDAP_TAG_LDAPCRED;
-                               cred.bv_val = NULL;
-                               cred.bv_len = 0;
+                               BER_BVZERO( &op->orb_cred );
                        }
 
                        if ( tag != LBER_ERROR ) {
@@ -127,219 +136,223 @@ do_bind(
        }
 
        if ( tag == LBER_ERROR ) {
-               send_ldap_disconnect( conn, op,
-                       LDAP_PROTOCOL_ERROR,
-               "decoding error" );
-               rc = SLAPD_DISCONNECT;
+               Debug( LDAP_DEBUG_ANY, "%s do_bind: ber_scanf failed\n",
+                       op->o_log_prefix, 0, 0 );
+               send_ldap_discon( op, rs, LDAP_PROTOCOL_ERROR, "decoding error" );
+               rs->sr_err = SLAPD_DISCONNECT;
                goto cleanup;
        }
 
-       if( (rc = get_ctrls( conn, op, 1 )) != LDAP_SUCCESS ) {
-               Debug( LDAP_DEBUG_ANY, "do_bind: get_ctrls failed\n", 0, 0, 0 );
+       if( get_ctrls( op, rs, 1 ) != LDAP_SUCCESS ) {
+               Debug( LDAP_DEBUG_ANY, "%s do_bind: get_ctrls failed\n",
+                       op->o_log_prefix, 0, 0 );
                goto cleanup;
        } 
 
-       ndn = ch_strdup( dn );
-
-       if ( dn_normalize( ndn ) == NULL ) {
-               Debug( LDAP_DEBUG_ANY, "bind: invalid dn (%s)\n", dn, 0, 0 );
-               send_ldap_result( conn, op, rc = LDAP_INVALID_DN_SYNTAX, NULL,
-                   "invalid DN", NULL, NULL );
+       /* We use the tmpmemctx here because it speeds up normalization.
+        * However, we must dup with regular malloc when storing any
+        * resulting DNs in the op or conn structures.
+        */
+       rs->sr_err = dnPrettyNormal( NULL, &dn, &op->o_req_dn, &op->o_req_ndn,
+               op->o_tmpmemctx );
+       if ( rs->sr_err != LDAP_SUCCESS ) {
+               Debug( LDAP_DEBUG_ANY, "%s do_bind: invalid dn (%s)\n",
+                       op->o_log_prefix, dn.bv_val, 0 );
+               send_ldap_error( op, rs, LDAP_INVALID_DN_SYNTAX, "invalid DN" );
                goto cleanup;
        }
 
-       if( method == LDAP_AUTH_SASL ) {
-               Debug( LDAP_DEBUG_TRACE, "do_sasl_bind: dn (%s) mech %s\n",
-                       dn, mech, NULL );
+       Statslog( LDAP_DEBUG_STATS, "%s BIND dn=\"%s\" method=%ld\n",
+           op->o_log_prefix, op->o_req_dn.bv_val,
+               (unsigned long) op->orb_method, 0, 0 );
+
+       if( op->orb_method == LDAP_AUTH_SASL ) {
+               Debug( LDAP_DEBUG_TRACE, "do_bind: dn (%s) SASL mech %s\n",
+                       op->o_req_dn.bv_val, mech.bv_val, NULL );
+
        } else {
-               Debug( LDAP_DEBUG_TRACE, "do_bind: version=%ld dn=\"%s\" method=%ld\n",
-                       (unsigned long) version, dn, (unsigned long) method );
+               Debug( LDAP_DEBUG_TRACE,
+                       "do_bind: version=%ld dn=\"%s\" method=%ld\n",
+                       (unsigned long) version, op->o_req_dn.bv_val,
+                       (unsigned long) op->orb_method );
        }
 
-       Statslog( LDAP_DEBUG_STATS, "conn=%ld op=%d BIND dn=\"%s\" method=%ld\n",
-           op->o_connid, op->o_opid, ndn, (unsigned long) method, 0 );
-
        if ( version < LDAP_VERSION_MIN || version > LDAP_VERSION_MAX ) {
-               Debug( LDAP_DEBUG_ANY, "do_bind: unknown version=%ld\n",
-                       (unsigned long) version, 0, 0 );
-               send_ldap_result( conn, op, rc = LDAP_PROTOCOL_ERROR,
-                       NULL, "requested protocol version not supported", NULL, NULL );
+               Debug( LDAP_DEBUG_ANY, "%s do_bind: unknown version=%ld\n",
+                       op->o_log_prefix, (unsigned long) version, 0 );
+               send_ldap_error( op, rs, LDAP_PROTOCOL_ERROR,
+                       "requested protocol version not supported" );
                goto cleanup;
 
-       } else if (( global_disallows & SLAP_DISALLOW_BIND_V2 ) &&
+       } else if (!( global_allows & SLAP_ALLOW_BIND_V2 ) &&
                version < LDAP_VERSION3 )
        {
-               send_ldap_result( conn, op, rc = LDAP_PROTOCOL_ERROR,
-                       NULL, "requested protocol version not allowed", NULL, NULL );
+               send_ldap_error( op, rs, LDAP_PROTOCOL_ERROR,
+                       "historical protocol version requested, use LDAPv3 instead" );
                goto cleanup;
        }
 
-       /* we set connection version regardless of whether bind succeeds
-        * or not.
+       /*
+        * we set connection version regardless of whether bind succeeds or not.
         */
-       ldap_pvt_thread_mutex_lock( &conn->c_mutex );
-       conn->c_protocol = version;
-       ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
+       ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
+       op->o_conn->c_protocol = version;
+       ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
 
-       if ( method == LDAP_AUTH_SASL ) {
-               char *edn;
-               slap_ssf_t ssf = 0;
+       op->orb_mech = mech;
 
-               if ( version < LDAP_VERSION3 ) {
+       op->o_bd = frontendDB;
+       rs->sr_err = frontendDB->be_bind( op, rs );
+
+cleanup:
+       if ( rs->sr_err == LDAP_SUCCESS ) {
+               if ( op->orb_method != LDAP_AUTH_SASL ) {
+                       ber_dupbv( &op->o_conn->c_authmech, &mech );
+               }
+               op->o_conn->c_authtype = op->orb_method;
+       }
+
+       if( !BER_BVISNULL( &op->o_req_dn ) ) {
+               slap_sl_free( op->o_req_dn.bv_val, op->o_tmpmemctx );
+               BER_BVZERO( &op->o_req_dn );
+       }
+       if( !BER_BVISNULL( &op->o_req_ndn ) ) {
+               slap_sl_free( op->o_req_ndn.bv_val, op->o_tmpmemctx );
+               BER_BVZERO( &op->o_req_ndn );
+       }
+
+       return rs->sr_err;
+}
+
+int
+fe_op_bind( Operation *op, SlapReply *rs )
+{
+       BackendDB       *bd = op->o_bd;
+
+       /* check for inappropriate controls */
+       if( get_manageDSAit( op ) == SLAP_CONTROL_CRITICAL ) {
+               send_ldap_error( op, rs,
+                       LDAP_UNAVAILABLE_CRITICAL_EXTENSION,
+                       "manageDSAit control inappropriate" );
+               goto cleanup;
+       }
+
+       if ( op->orb_method == LDAP_AUTH_SASL ) {
+               if ( op->o_protocol < LDAP_VERSION3 ) {
                        Debug( LDAP_DEBUG_ANY, "do_bind: sasl with LDAPv%ld\n",
-                               (unsigned long) version, 0, 0 );
-                       send_ldap_disconnect( conn, op,
+                               (unsigned long)op->o_protocol, 0, 0 );
+                       send_ldap_discon( op, rs,
                                LDAP_PROTOCOL_ERROR, "SASL bind requires LDAPv3" );
-                       rc = SLAPD_DISCONNECT;
+                       rs->sr_err = SLAPD_DISCONNECT;
                        goto cleanup;
                }
 
-               if( mech == NULL || *mech == '\0' ) {
+               if( BER_BVISNULL( &op->orb_mech ) || BER_BVISEMPTY( &op->orb_mech ) ) {
                        Debug( LDAP_DEBUG_ANY,
                                "do_bind: no sasl mechanism provided\n",
                                0, 0, 0 );
-                       send_ldap_result( conn, op, rc = LDAP_AUTH_METHOD_NOT_SUPPORTED,
-                               NULL, "no SASL mechanism provided", NULL, NULL );
+                       send_ldap_error( op, rs, LDAP_AUTH_METHOD_NOT_SUPPORTED,
+                               "no SASL mechanism provided" );
                        goto cleanup;
                }
 
-               ldap_pvt_thread_mutex_lock( &conn->c_mutex );
-
-               if ( conn->c_sasl_bind_mech != NULL ) {
-                       /* SASL bind is in progress */
-                       saslmech = NULL;
+               /* check restrictions */
+               if( backend_check_restrictions( op, rs, &op->orb_mech ) != LDAP_SUCCESS ) {
+                       send_ldap_result( op, rs );
+                       goto cleanup;
+               }
 
-                       if((strcmp(conn->c_sasl_bind_mech, mech) != 0)) {
-                               /* mechanism changed */
-                               slap_sasl_reset(conn);
+               ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
+               if ( op->o_conn->c_sasl_bind_in_progress ) {
+                       if( !bvmatch( &op->o_conn->c_sasl_bind_mech, &op->orb_mech ) ) {
+                               /* mechanism changed between bind steps */
+                               slap_sasl_reset(op->o_conn);
                        }
-
-                       free( conn->c_sasl_bind_mech );
-                       conn->c_sasl_bind_mech = NULL;
-
-#ifdef LDAP_DEBUG
                } else {
-                       /* SASL bind is NOT in progress */
-                       saslmech = mech;
-                       assert( conn->c_sasl_bind_mech == NULL );
-#endif
+                       ber_dupbv(&op->o_conn->c_sasl_bind_mech, &op->orb_mech);
                }
 
-               ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
+               /* Set the bindop for the benefit of in-directory SASL lookups */
+               op->o_conn->c_sasl_bindop = op;
 
-               edn = NULL;
-               rc = slap_sasl_bind( conn, op, dn, ndn, saslmech, &cred,
-                       &edn, &ssf );
+               ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
 
-               if( rc == LDAP_SUCCESS ) {
-                       ldap_pvt_thread_mutex_lock( &conn->c_mutex );
-                       conn->c_dn = edn;
-                       conn->c_authmech = mech;
-                       if( ssf ) conn->c_sasl_layers++;
-                       conn->c_sasl_ssf = ssf;
-                       if( ssf > conn->c_ssf ) {
-                               conn->c_ssf = ssf;
-                       }
-                       ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
-
-               } else if ( rc == LDAP_SASL_BIND_IN_PROGRESS ) {
-                       conn->c_sasl_bind_mech = mech;
-               }
-
-               mech = NULL;
+               rs->sr_err = slap_sasl_bind( op, rs );
 
                goto cleanup;
 
        } else {
                /* Not SASL, cancel any in-progress bind */
-               ldap_pvt_thread_mutex_lock( &conn->c_mutex );
-
-               if ( conn->c_sasl_bind_mech != NULL ) {
-                       assert( conn->c_sasl_bind_in_progress );
+               ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
 
-                       free(conn->c_sasl_bind_mech);
-                       conn->c_sasl_bind_mech = NULL;
-
-               } else {
-                       assert( !conn->c_sasl_bind_in_progress );
+               if ( !BER_BVISNULL( &op->o_conn->c_sasl_bind_mech ) ) {
+                       free( op->o_conn->c_sasl_bind_mech.bv_val );
+                       BER_BVZERO( &op->o_conn->c_sasl_bind_mech );
                }
+               op->o_conn->c_sasl_bind_in_progress = 0;
 
-               slap_sasl_reset( conn );
-               ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
+               slap_sasl_reset( op->o_conn );
+               ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
        }
 
-       if ( method == LDAP_AUTH_SIMPLE ) {
+       if ( op->orb_method == LDAP_AUTH_SIMPLE ) {
+               BER_BVSTR( &op->orb_mech, "SIMPLE" );
                /* accept "anonymous" binds */
-               if ( cred.bv_len == 0 || ndn == NULL || *ndn == '\0' ) {
-                       rc = LDAP_SUCCESS;
-                       text = NULL;
+               if ( BER_BVISEMPTY( &op->orb_cred ) || BER_BVISEMPTY( &op->o_req_ndn ) ) {
+                       rs->sr_err = LDAP_SUCCESS;
 
-                       if( cred.bv_len &&
-                               ( global_disallows & SLAP_DISALLOW_BIND_ANON_CRED ))
+                       if( !BER_BVISEMPTY( &op->orb_cred ) &&
+                               !( global_allows & SLAP_ALLOW_BIND_ANON_CRED ))
                        {
                                /* cred is not empty, disallow */
-                               rc = LDAP_INVALID_CREDENTIALS;
+                               rs->sr_err = LDAP_INVALID_CREDENTIALS;
 
-                       } else if ( ndn != NULL && *ndn != '\0' &&
-                               ( global_disallows & SLAP_DISALLOW_BIND_ANON_DN ))
+                       } else if ( !BER_BVISEMPTY( &op->o_req_ndn ) &&
+                               !( global_allows & SLAP_ALLOW_BIND_ANON_DN ))
                        {
                                /* DN is not empty, disallow */
-                               rc = LDAP_UNWILLING_TO_PERFORM;
-                               text = "unwilling to allow anonymous bind with non-empty DN";
+                               rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
+                               rs->sr_text =
+                                       "unauthenticated bind (DN with no password) disallowed";
 
                        } else if ( global_disallows & SLAP_DISALLOW_BIND_ANON ) {
                                /* disallow */
-                               rc = LDAP_INAPPROPRIATE_AUTH;
-                               text = "anonymous bind disallowed";
+                               rs->sr_err = LDAP_INAPPROPRIATE_AUTH;
+                               rs->sr_text = "anonymous bind disallowed";
+
+                       } else {
+                               backend_check_restrictions( op, rs, &op->orb_mech );
                        }
 
                        /*
                         * we already forced connection to "anonymous",
                         * just need to send success
                         */
-                       send_ldap_result( conn, op, rc,
-                               NULL, text, NULL, NULL );
+                       send_ldap_result( op, rs );
                        Debug( LDAP_DEBUG_TRACE, "do_bind: v%d anonymous bind\n",
-                               version, 0, 0 );
+                               op->o_protocol, 0, 0 );
                        goto cleanup;
 
                } else if ( global_disallows & SLAP_DISALLOW_BIND_SIMPLE ) {
                        /* disallow simple authentication */
-                       rc = LDAP_UNWILLING_TO_PERFORM;
-                       text = "unwilling to perform simple authentication";
+                       rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
+                       rs->sr_text = "unwilling to perform simple authentication";
 
-                       send_ldap_result( conn, op, rc,
-                               NULL, text, NULL, NULL );
+                       send_ldap_result( op, rs );
                        Debug( LDAP_DEBUG_TRACE,
                                "do_bind: v%d simple bind(%s) disallowed\n",
-                               version, ndn, 0 );
+                               op->o_protocol, op->o_req_ndn.bv_val, 0 );
                        goto cleanup;
                }
 
-#ifdef LDAP_API_FEATURE_X_OPENLDAP_V2_KBIND
-       } else if ( method == LDAP_AUTH_KRBV41 || method == LDAP_AUTH_KRBV42 ) {
-               if ( global_disallows & SLAP_DISALLOW_BIND_KRBV4 ) {
-                       /* disallow simple authentication */
-                       rc = LDAP_UNWILLING_TO_PERFORM;
-                       text = "unwilling to perform Kerberos V4 bind";
-
-                       send_ldap_result( conn, op, rc,
-                               NULL, text, NULL, NULL );
-                       Debug( LDAP_DEBUG_TRACE, "do_bind: v%d Kerberos V4 bind\n",
-                               version, 0, 0 );
-                       goto cleanup;
-               }
-#endif
-
        } else {
-               rc = LDAP_AUTH_UNKNOWN;
-               text = "unknown authentication method";
+               rs->sr_err = LDAP_AUTH_METHOD_NOT_SUPPORTED;
+               rs->sr_text = "unknown authentication method";
 
-               send_ldap_result( conn, op, rc,
-                       NULL, text, NULL, NULL );
+               send_ldap_result( op, rs );
                Debug( LDAP_DEBUG_TRACE,
                        "do_bind: v%d unknown authentication method (%d)\n",
-                       version, method, 0 );
+                       op->o_protocol, op->orb_method, 0 );
                goto cleanup;
        }
 
@@ -349,95 +362,83 @@ do_bind(
         * if we don't hold it.
         */
 
-       if ( (be = select_backend( ndn )) == NULL ) {
-               if ( default_referral ) {
-                       send_ldap_result( conn, op, rc = LDAP_REFERRAL,
-                               NULL, NULL, default_referral, NULL );
-
-               } else {
-                       /* noSuchObject is not allowed to be returned by bind */
-                       send_ldap_result( conn, op, rc = LDAP_INVALID_CREDENTIALS,
-                               NULL, NULL, NULL, NULL );
-               }
-
+       if ( (op->o_bd = select_backend( &op->o_req_ndn, 0 )) == NULL ) {
+               /* don't return referral for bind requests */
+               /* noSuchObject is not allowed to be returned by bind */
+               rs->sr_err = LDAP_INVALID_CREDENTIALS;
+               op->o_bd = bd;
+               send_ldap_result( op, rs );
                goto cleanup;
        }
 
        /* check restrictions */
-       rc = backend_check_restrictions( be, conn, op, NULL, &text ) ;
-       if( rc != LDAP_SUCCESS ) {
-               send_ldap_result( conn, op, rc,
-                       NULL, text, NULL, NULL );
+       if( backend_check_restrictions( op, rs, NULL ) != LDAP_SUCCESS ) {
+               send_ldap_result( op, rs );
                goto cleanup;
        }
 
-       conn->c_authz_backend = be;
-
-       if ( be->be_bind ) {
-               int ret;
-               /* alias suffix */
-               char *edn = NULL;
+       if( op->o_bd->be_bind ) {
+               op->o_conn->c_authz_cookie = NULL;
 
-               /* deref suffix alias if appropriate */
-               ndn = suffix_alias( be, ndn );
+               rs->sr_err = (op->o_bd->be_bind)( op, rs );
 
-               ret = (*be->be_bind)( be, conn, op, dn, ndn,
-                       method, &cred, &edn );
+               if ( rs->sr_err == 0 ) {
+                       (void)fe_op_bind_success( op, rs );
 
-               if ( ret == 0 ) {
-                       ldap_pvt_thread_mutex_lock( &conn->c_mutex );
+               } else if ( !BER_BVISNULL( &op->orb_edn ) ) {
+                       free( op->orb_edn.bv_val );
+                       BER_BVZERO( &op->orb_edn );
+               }
 
-                       conn->c_cdn = dn;
-                       dn = NULL;
+       } else {
+               send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
+                       "operation not supported within naming context" );
+       }
 
-                       if(edn != NULL) {
-                               conn->c_dn = edn;
-                       } else {
-                               conn->c_dn = ndn;
-                               ndn = NULL;
-                       }
+cleanup:;
+       op->o_bd = bd;
+       return rs->sr_err;
+}
 
-                       Debug( LDAP_DEBUG_TRACE, "do_bind: v%d bind: \"%s\" to \"%s\"\n",
-                       version, conn->c_cdn, conn->c_dn );
+int
+fe_op_bind_success( Operation *op, SlapReply *rs )
+{
+       ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
 
-                       ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
+       if( op->o_conn->c_authz_backend == NULL ) {
+               op->o_conn->c_authz_backend = op->o_bd;
+       }
 
-                       /* send this here to avoid a race condition */
-                       send_ldap_result( conn, op, LDAP_SUCCESS,
-                               NULL, NULL, NULL, NULL );
+       /* be_bind returns regular/global edn */
+       if( !BER_BVISEMPTY( &op->orb_edn ) ) {
+               op->o_conn->c_dn = op->orb_edn;
+       } else {
+               ber_dupbv(&op->o_conn->c_dn, &op->o_req_dn);
+       }
 
-               } else if (edn != NULL) {
-                       free( edn );
-               }
+       ber_dupbv( &op->o_conn->c_ndn, &op->o_req_ndn );
 
-       } else {
-               send_ldap_result( conn, op, rc = LDAP_UNWILLING_TO_PERFORM,
-                       NULL, "operation not supported within namingContext", NULL, NULL );
+       /* op->o_conn->c_sb may be 0 for internal operations */
+       if( !BER_BVISEMPTY( &op->o_conn->c_dn ) && op->o_conn->c_sb != 0 ) {
+               ber_len_t max = sockbuf_max_incoming_auth;
+               ber_sockbuf_ctrl( op->o_conn->c_sb,
+                       LBER_SB_OPT_SET_MAX_INCOMING, &max );
        }
 
-cleanup:
-       if( rc != LDAP_SASL_BIND_IN_PROGRESS ) {
-               ldap_pvt_thread_mutex_lock( &conn->c_mutex );
+       /* log authorization identity */
+       Statslog( LDAP_DEBUG_STATS,
+               "%s BIND dn=\"%s\" mech=%s ssf=0\n",
+               op->o_log_prefix,
+               op->o_conn->c_dn.bv_val, op->orb_mech.bv_val, 0, 0 );
 
-               /* dispose of mech */
-               free( conn->c_sasl_bind_mech );
-               conn->c_sasl_bind_mech = NULL;
+       Debug( LDAP_DEBUG_TRACE,
+               "do_bind: v%d bind: \"%s\" to \"%s\"\n",
+               op->o_protocol, op->o_req_dn.bv_val, op->o_conn->c_dn.bv_val );
 
-               ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
-       }
+       ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
 
-       if( dn != NULL ) {
-               free( dn );
-       }
-       if( ndn != NULL ) {
-               free( ndn );
-       }
-       if ( mech != NULL ) {
-               free( mech );
-       }
-       if ( cred.bv_val != NULL ) {
-               free( cred.bv_val );
-       }
+       /* send this here to avoid a race condition */
+       send_ldap_result( op, rs );
 
-       return rc;
+       return LDAP_SUCCESS;
 }