1 /* $NetBSD: bind.c,v 1.1.1.1 2014/05/28 09:58:49 tron Exp $ */ 2 3 /* bind.c - mdb backend bind routine */ 4 /* $OpenLDAP$ */ 5 /* This work is part of OpenLDAP Software <http://www.openldap.org/>. 6 * 7 * Copyright 2000-2014 The OpenLDAP Foundation. 8 * All rights reserved. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted only as authorized by the OpenLDAP 12 * Public License. 13 * 14 * A copy of this license is available in the file LICENSE in the 15 * top-level directory of the distribution or, alternatively, at 16 * <http://www.OpenLDAP.org/license.html>. 17 */ 18 19 #include "portable.h" 20 21 #include <stdio.h> 22 #include <ac/string.h> 23 #include <ac/unistd.h> 24 25 #include "back-mdb.h" 26 27 int 28 mdb_bind( Operation *op, SlapReply *rs ) 29 { 30 struct mdb_info *mdb = (struct mdb_info *) op->o_bd->be_private; 31 Entry *e; 32 Attribute *a; 33 34 AttributeDescription *password = slap_schema.si_ad_userPassword; 35 36 MDB_txn *rtxn; 37 mdb_op_info opinfo = {{{0}}}, *moi = &opinfo; 38 39 Debug( LDAP_DEBUG_ARGS, 40 "==> " LDAP_XSTRING(mdb_bind) ": dn: %s\n", 41 op->o_req_dn.bv_val, 0, 0); 42 43 /* allow noauth binds */ 44 switch ( be_rootdn_bind( op, NULL ) ) { 45 case LDAP_SUCCESS: 46 /* frontend will send result */ 47 return rs->sr_err = LDAP_SUCCESS; 48 49 default: 50 /* give the database a chance */ 51 /* NOTE: this behavior departs from that of other backends, 52 * since the others, in case of password checking failure 53 * do not give the database a chance. If an entry with 54 * rootdn's name does not exist in the database the result 55 * will be the same. See ITS#4962 for discussion. */ 56 break; 57 } 58 59 rs->sr_err = mdb_opinfo_get(op, mdb, 1, &moi); 60 switch(rs->sr_err) { 61 case 0: 62 break; 63 default: 64 rs->sr_text = "internal error"; 65 send_ldap_result( op, rs ); 66 return rs->sr_err; 67 } 68 69 rtxn = moi->moi_txn; 70 71 /* get entry with reader lock */ 72 rs->sr_err = mdb_dn2entry( op, rtxn, NULL, &op->o_req_ndn, &e, NULL, 0 ); 73 74 switch(rs->sr_err) { 75 case MDB_NOTFOUND: 76 rs->sr_err = LDAP_INVALID_CREDENTIALS; 77 goto done; 78 case 0: 79 break; 80 case LDAP_BUSY: 81 rs->sr_text = "ldap_server_busy"; 82 goto done; 83 default: 84 rs->sr_err = LDAP_OTHER; 85 rs->sr_text = "internal error"; 86 goto done; 87 } 88 89 ber_dupbv( &op->oq_bind.rb_edn, &e->e_name ); 90 91 /* check for deleted */ 92 if ( is_entry_subentry( e ) ) { 93 /* entry is an subentry, don't allow bind */ 94 Debug( LDAP_DEBUG_TRACE, "entry is subentry\n", 0, 95 0, 0 ); 96 rs->sr_err = LDAP_INVALID_CREDENTIALS; 97 goto done; 98 } 99 100 if ( is_entry_alias( e ) ) { 101 /* entry is an alias, don't allow bind */ 102 Debug( LDAP_DEBUG_TRACE, "entry is alias\n", 0, 0, 0 ); 103 rs->sr_err = LDAP_INVALID_CREDENTIALS; 104 goto done; 105 } 106 107 if ( is_entry_referral( e ) ) { 108 Debug( LDAP_DEBUG_TRACE, "entry is referral\n", 0, 109 0, 0 ); 110 rs->sr_err = LDAP_INVALID_CREDENTIALS; 111 goto done; 112 } 113 114 switch ( op->oq_bind.rb_method ) { 115 case LDAP_AUTH_SIMPLE: 116 a = attr_find( e->e_attrs, password ); 117 if ( a == NULL ) { 118 rs->sr_err = LDAP_INVALID_CREDENTIALS; 119 goto done; 120 } 121 122 if ( slap_passwd_check( op, e, a, &op->oq_bind.rb_cred, 123 &rs->sr_text ) != 0 ) 124 { 125 /* failure; stop front end from sending result */ 126 rs->sr_err = LDAP_INVALID_CREDENTIALS; 127 goto done; 128 } 129 130 rs->sr_err = 0; 131 break; 132 133 default: 134 assert( 0 ); /* should not be reachable */ 135 rs->sr_err = LDAP_STRONG_AUTH_NOT_SUPPORTED; 136 rs->sr_text = "authentication method not supported"; 137 } 138 139 done: 140 if ( moi == &opinfo ) { 141 mdb_txn_reset( moi->moi_txn ); 142 LDAP_SLIST_REMOVE( &op->o_extra, &moi->moi_oe, OpExtra, oe_next ); 143 } else { 144 moi->moi_ref--; 145 } 146 /* free entry and reader lock */ 147 if( e != NULL ) { 148 mdb_entry_return( op, e ); 149 } 150 151 if ( rs->sr_err ) { 152 send_ldap_result( op, rs ); 153 if ( rs->sr_ref ) { 154 ber_bvarray_free( rs->sr_ref ); 155 rs->sr_ref = NULL; 156 } 157 } 158 /* front end will send result on success (rs->sr_err==0) */ 159 return rs->sr_err; 160 } 161