/* bind.c - mdb backend bind routine */ /* $OpenLDAP$ */ /* This work is part of OpenLDAP Software . * * Copyright 2000-2021 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 * . */ #include "portable.h" #include #include #include #include "back-mdb.h" int mdb_bind( Operation *op, SlapReply *rs ) { struct mdb_info *mdb = (struct mdb_info *) op->o_bd->be_private; Entry *e; Attribute *a; AttributeDescription *password = slap_schema.si_ad_userPassword; MDB_txn *rtxn; mdb_op_info opinfo = {{{0}}}, *moi = &opinfo; Debug( LDAP_DEBUG_ARGS, "==> " LDAP_XSTRING(mdb_bind) ": dn: %s\n", op->o_req_dn.bv_val, 0, 0); /* allow noauth binds */ switch ( be_rootdn_bind( op, NULL ) ) { case LDAP_SUCCESS: /* frontend will send result */ return rs->sr_err = LDAP_SUCCESS; default: /* give the database a chance */ /* NOTE: this behavior departs from that of other backends, * since the others, in case of password checking failure * do not give the database a chance. If an entry with * rootdn's name does not exist in the database the result * will be the same. See ITS#4962 for discussion. */ break; } rs->sr_err = mdb_opinfo_get(op, mdb, 1, &moi); switch(rs->sr_err) { case 0: break; default: rs->sr_text = "internal error"; send_ldap_result( op, rs ); return rs->sr_err; } rtxn = moi->moi_txn; /* get entry with reader lock */ rs->sr_err = mdb_dn2entry( op, rtxn, NULL, &op->o_req_ndn, &e, NULL, 0 ); switch(rs->sr_err) { case MDB_NOTFOUND: rs->sr_err = LDAP_INVALID_CREDENTIALS; goto done; case 0: break; case LDAP_BUSY: rs->sr_text = "ldap_server_busy"; goto done; default: rs->sr_err = LDAP_OTHER; rs->sr_text = "internal error"; goto done; } ber_dupbv( &op->oq_bind.rb_edn, &e->e_name ); /* check for deleted */ if ( is_entry_subentry( e ) ) { /* entry is an subentry, don't allow bind */ Debug( LDAP_DEBUG_TRACE, "entry is subentry\n", 0, 0, 0 ); rs->sr_err = LDAP_INVALID_CREDENTIALS; goto done; } if ( is_entry_alias( e ) ) { /* entry is an alias, don't allow bind */ Debug( LDAP_DEBUG_TRACE, "entry is alias\n", 0, 0, 0 ); rs->sr_err = LDAP_INVALID_CREDENTIALS; goto done; } if ( is_entry_referral( e ) ) { Debug( LDAP_DEBUG_TRACE, "entry is referral\n", 0, 0, 0 ); rs->sr_err = LDAP_INVALID_CREDENTIALS; goto done; } switch ( op->oq_bind.rb_method ) { case LDAP_AUTH_SIMPLE: a = attr_find( e->e_attrs, password ); if ( a == NULL ) { rs->sr_err = LDAP_INVALID_CREDENTIALS; goto done; } if ( slap_passwd_check( op, e, a, &op->oq_bind.rb_cred, &rs->sr_text ) != 0 ) { /* failure; stop front end from sending result */ rs->sr_err = LDAP_INVALID_CREDENTIALS; goto done; } rs->sr_err = 0; break; default: assert( 0 ); /* should not be reachable */ rs->sr_err = LDAP_STRONG_AUTH_NOT_SUPPORTED; rs->sr_text = "authentication method not supported"; } done: if ( moi == &opinfo ) { mdb_txn_reset( moi->moi_txn ); LDAP_SLIST_REMOVE( &op->o_extra, &moi->moi_oe, OpExtra, oe_next ); } else { moi->moi_ref--; } /* free entry and reader lock */ if( e != NULL ) { mdb_entry_return( op, e ); } if ( rs->sr_err ) { send_ldap_result( op, rs ); if ( rs->sr_ref ) { ber_bvarray_free( rs->sr_ref ); rs->sr_ref = NULL; } } /* front end will send result on success (rs->sr_err==0) */ return rs->sr_err; }