1 /* $NetBSD: abandon.c,v 1.3 2021/08/14 16:14:58 christos Exp $ */
2
3 /* abandon.c - decode and handle an ldap abandon operation */
4 /* $OpenLDAP$ */
5 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
6 *
7 * Copyright 1998-2021 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 /* Portions Copyright (c) 1995 Regents of the University of Michigan.
19 * All rights reserved.
20 *
21 * Redistribution and use in source and binary forms are permitted
22 * provided that this notice is preserved and that due credit is given
23 * to the University of Michigan at Ann Arbor. The name of the University
24 * may not be used to endorse or promote products derived from this
25 * software without specific prior written permission. This software
26 * is provided ``as is'' without express or implied warranty.
27 */
28
29 #include <sys/cdefs.h>
30 __RCSID("$NetBSD: abandon.c,v 1.3 2021/08/14 16:14:58 christos Exp $");
31
32 #include "portable.h"
33
34 #include <stdio.h>
35 #include <ac/socket.h>
36
37 #include "slap.h"
38
39 int
do_abandon(Operation * op,SlapReply * rs)40 do_abandon( Operation *op, SlapReply *rs )
41 {
42 ber_int_t id;
43 Operation *o;
44 const char *msg;
45
46 Debug( LDAP_DEBUG_TRACE, "%s do_abandon\n",
47 op->o_log_prefix );
48
49 /*
50 * Parse the abandon request. It looks like this:
51 *
52 * AbandonRequest := MessageID
53 */
54
55 if ( ber_scanf( op->o_ber, "i", &id ) == LBER_ERROR ) {
56 Debug( LDAP_DEBUG_ANY, "%s do_abandon: ber_scanf failed\n",
57 op->o_log_prefix );
58 send_ldap_discon( op, rs, LDAP_PROTOCOL_ERROR, "decoding error" );
59 return SLAPD_DISCONNECT;
60 }
61
62 Debug( LDAP_DEBUG_STATS, "%s ABANDON msg=%ld\n",
63 op->o_log_prefix, (long) id );
64
65 if( get_ctrls( op, rs, 0 ) != LDAP_SUCCESS ) {
66 Debug( LDAP_DEBUG_ANY, "%s do_abandon: get_ctrls failed\n",
67 op->o_log_prefix );
68 return rs->sr_err;
69 }
70
71 Debug( LDAP_DEBUG_ARGS, "%s do_abandon: id=%ld\n",
72 op->o_log_prefix, (long) id );
73
74 if( id <= 0 ) {
75 Debug( LDAP_DEBUG_ANY, "%s do_abandon: bad msgid %ld\n",
76 op->o_log_prefix, (long) id );
77 return LDAP_SUCCESS;
78 }
79
80 ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
81
82 /* Find the operation being abandoned. */
83 LDAP_STAILQ_FOREACH( o, &op->o_conn->c_ops, o_next ) {
84 if ( o->o_msgid == id ) {
85 break;
86 }
87 }
88
89 if ( o == NULL ) {
90 msg = "not found";
91 /* The operation is not active. Just discard it if found. */
92 LDAP_STAILQ_FOREACH( o, &op->o_conn->c_pending_ops, o_next ) {
93 if ( o->o_msgid == id ) {
94 msg = "discarded";
95 /* FIXME: This traverses c_pending_ops yet again. */
96 LDAP_STAILQ_REMOVE( &op->o_conn->c_pending_ops,
97 o, Operation, o_next );
98 LDAP_STAILQ_NEXT(o, o_next) = NULL;
99 op->o_conn->c_n_ops_pending--;
100 slap_op_free( o, NULL );
101 break;
102 }
103 }
104
105 } else if ( o->o_tag == LDAP_REQ_BIND
106 || o->o_tag == LDAP_REQ_UNBIND
107 || o->o_tag == LDAP_REQ_ABANDON ) {
108 msg = "cannot be abandoned";
109
110 #if 0 /* Would break o_abandon used as "suppress response" flag, ITS#6138 */
111 } else if ( o->o_abandon ) {
112 msg = "already being abandoned";
113 #endif
114
115 } else {
116 msg = "found";
117 /* Set the o_abandon flag in the to-be-abandoned operation.
118 * The backend can periodically check this flag and abort the
119 * operation at a convenient time. However it should "send"
120 * the response anyway, with result code SLAPD_ABANDON.
121 * The functions in result.c will intercept the message.
122 */
123 o->o_abandon = 1;
124 op->orn_msgid = id;
125 op->o_bd = frontendDB;
126 rs->sr_err = frontendDB->be_abandon( op, rs );
127 }
128
129 ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
130
131 Debug( LDAP_DEBUG_TRACE, "%s do_abandon: op=%ld %s\n",
132 op->o_log_prefix, (long) id, msg );
133 return rs->sr_err;
134 }
135
136 int
fe_op_abandon(Operation * op,SlapReply * rs)137 fe_op_abandon( Operation *op, SlapReply *rs )
138 {
139 LDAP_STAILQ_FOREACH( op->o_bd, &backendDB, be_next ) {
140 if ( op->o_bd->be_abandon ) {
141 (void)op->o_bd->be_abandon( op, rs );
142 }
143 }
144
145 return LDAP_SUCCESS;
146 }
147