1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
|
/* abandon.c - decode and handle an ldap abandon operation */
/* $OpenLDAP$ */
/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
*
* Copyright 1998-2022 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>.
*/
/* Portions Copyright (c) 1995 Regents of the University of Michigan.
* All rights reserved.
*
* Redistribution and use in source and binary forms are permitted
* provided that this notice is preserved and that due credit is given
* to the University of Michigan at Ann Arbor. The name of the University
* may not be used to endorse or promote products derived from this
* software without specific prior written permission. This software
* is provided ``as is'' without express or implied warranty.
*/
#include "portable.h"
#include <stdio.h>
#include <ac/socket.h>
#include "slap.h"
int
do_abandon( Operation *op, SlapReply *rs )
{
ber_int_t id;
Operation *o;
const char *msg;
Debug( LDAP_DEBUG_TRACE, "%s do_abandon\n",
op->o_log_prefix );
/*
* Parse the abandon request. It looks like this:
*
* AbandonRequest := MessageID
*/
if ( ber_scanf( op->o_ber, "i", &id ) == LBER_ERROR ) {
Debug( LDAP_DEBUG_ANY, "%s do_abandon: ber_scanf failed\n",
op->o_log_prefix );
send_ldap_discon( op, rs, LDAP_PROTOCOL_ERROR, "decoding error" );
return SLAPD_DISCONNECT;
}
Debug( LDAP_DEBUG_STATS, "%s ABANDON msg=%ld\n",
op->o_log_prefix, (long) id );
if( get_ctrls( op, rs, 0 ) != LDAP_SUCCESS ) {
Debug( LDAP_DEBUG_ANY, "%s do_abandon: get_ctrls failed\n",
op->o_log_prefix );
return rs->sr_err;
}
Debug( LDAP_DEBUG_ARGS, "%s do_abandon: id=%ld\n",
op->o_log_prefix, (long) id );
if( id <= 0 ) {
Debug( LDAP_DEBUG_ANY, "%s do_abandon: bad msgid %ld\n",
op->o_log_prefix, (long) id );
return LDAP_SUCCESS;
}
ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
/* Find the operation being abandoned. */
LDAP_STAILQ_FOREACH( o, &op->o_conn->c_ops, o_next ) {
if ( o->o_msgid == id ) {
break;
}
}
if ( o == NULL ) {
msg = "not found";
/* The operation is not active. Just discard it if found. */
LDAP_STAILQ_FOREACH( o, &op->o_conn->c_pending_ops, o_next ) {
if ( o->o_msgid == id ) {
msg = "discarded";
/* FIXME: This traverses c_pending_ops yet again. */
LDAP_STAILQ_REMOVE( &op->o_conn->c_pending_ops,
o, Operation, o_next );
LDAP_STAILQ_NEXT(o, o_next) = NULL;
op->o_conn->c_n_ops_pending--;
slap_op_free( o, NULL );
break;
}
}
} else if ( o->o_tag == LDAP_REQ_BIND
|| o->o_tag == LDAP_REQ_UNBIND
|| o->o_tag == LDAP_REQ_ABANDON ) {
msg = "cannot be abandoned";
} else if ( o->o_abandon ) {
msg = "already being abandoned";
} else {
msg = "found";
/* Set the o_abandon flag in the to-be-abandoned operation.
* The backend can periodically check this flag and abort the
* operation at a convenient time. However it should "send"
* the response anyway, with result code SLAPD_ABANDON.
* The functions in result.c will intercept the message.
*/
o->o_abandon = 1;
op->orn_msgid = id;
op->o_bd = frontendDB;
rs->sr_err = frontendDB->be_abandon( op, rs );
}
ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
Debug( LDAP_DEBUG_TRACE, "%s do_abandon: op=%ld %s\n",
op->o_log_prefix, (long) id, msg );
return rs->sr_err;
}
int
fe_op_abandon( Operation *op, SlapReply *rs )
{
LDAP_STAILQ_FOREACH( op->o_bd, &backendDB, be_next ) {
if ( op->o_bd->be_abandon ) {
(void)op->o_bd->be_abandon( op, rs );
}
}
return LDAP_SUCCESS;
}
|
