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
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
|
/** BEGIN COPYRIGHT BLOCK
* Copyright 2001 Sun Microsystems, Inc.
* Portions copyright 1999, 2001-2003 Netscape Communications Corporation.
* All rights reserved.
* END COPYRIGHT BLOCK **/
#include "cb.h"
/*
* Perform a compare operation
*
* Returns:
* 0 - success
* <0 - fail
*
*/
int
chaining_back_compare ( Slapi_PBlock *pb )
{
Slapi_Backend * be;
cb_backend_instance *cb=NULL;
struct berval *bval=NULL;
LDAPControl **ctrls, **serverctrls;
int rc,parse_rc,msgid,i,checkacl;
LDAP *ld=NULL;
char **referrals=NULL;
LDAPMessage * res;
char *type,*dn,* matched_msg, *error_msg;
char *cnxerrbuf=NULL;
time_t endtime;
cb_outgoing_conn *cnx;
if ( LDAP_SUCCESS != (rc=cb_forward_operation(pb) )) {
cb_send_ldap_result( pb, rc, NULL, "Chaining forbidden", 0, NULL );
return -1;
}
slapi_pblock_get( pb, SLAPI_BACKEND, &be );
cb = cb_get_instance(be);
cb_update_monitor_info(pb,cb,SLAPI_OPERATION_COMPARE);
/* Check wether the chaining BE is available or not */
if ( cb_check_availability( cb, pb ) == FARMSERVER_UNAVAILABLE ){
return -1;
}
slapi_pblock_get( pb, SLAPI_COMPARE_TARGET, &dn );
slapi_pblock_get( pb, SLAPI_COMPARE_TYPE, &type );
slapi_pblock_get( pb, SLAPI_COMPARE_VALUE, &bval );
/*
* Check local acls
* No need to lock the config to access cb->local_acl
*/
checkacl=cb->local_acl && !cb->associated_be_is_disabled;
if (checkacl) {
char * errbuf=NULL;
Slapi_Entry *te = slapi_entry_alloc();
slapi_entry_set_dn(te,slapi_ch_strdup(dn));
rc = cb_access_allowed (pb, te, type, bval, SLAPI_ACL_COMPARE,&errbuf);
slapi_entry_free(te);
if ( rc != LDAP_SUCCESS ) {
cb_send_ldap_result( pb, rc, NULL, errbuf, 0, NULL );
slapi_ch_free((void **) &errbuf);
return 1;
}
}
/*
* Grab a connection handle
*/
if ((rc = cb_get_connection(cb->pool,&ld,&cnx,NULL,&cnxerrbuf)) != LDAP_SUCCESS) {
cb_send_ldap_result( pb, LDAP_OPERATIONS_ERROR, NULL, cnxerrbuf, 0, NULL);
slapi_ch_free((void **)&cnxerrbuf);
/* ping the farm. If the farm is unreachable, we increment the counter */
cb_ping_farm(cb,NULL,0);
return 1;
}
/*
* Control management
*/
if ( (rc = cb_update_controls( pb,ld,&ctrls,CB_UPDATE_CONTROLS_ADDAUTH )) != LDAP_SUCCESS ) {
cb_send_ldap_result( pb, rc, NULL,NULL, 0, NULL);
cb_release_op_connection(cb->pool,ld,CB_LDAP_CONN_ERROR(rc));
return 1;
}
if ( slapi_op_abandoned( pb )) {
cb_release_op_connection(cb->pool,ld,0);
if ( NULL != ctrls)
ldap_controls_free(ctrls);
return -1;
}
/* heart-beat management */
if (cb->max_idle_time>0)
endtime=current_time() + cb->max_idle_time;
/*
* Send LDAP operation to the remote host
*/
rc = ldap_compare_ext( ld, dn, type, bval, ctrls, NULL, &msgid );
if ( NULL != ctrls)
ldap_controls_free(ctrls);
if ( rc != LDAP_SUCCESS ) {
cb_send_ldap_result( pb, LDAP_OPERATIONS_ERROR, NULL,
ldap_err2string(rc), 0, NULL);
cb_release_op_connection(cb->pool,ld,CB_LDAP_CONN_ERROR(rc));
return 1;
}
while ( 1 ) {
if (cb_check_forward_abandon(cb,pb,ld,msgid)) {
return -1;
}
/* No need to lock the config to access cb->abandon_timeout */
rc = ldap_result( ld, msgid, 0, &cb->abandon_timeout, &res );
switch ( rc ) {
case -1:
cb_send_ldap_result( pb, LDAP_OPERATIONS_ERROR, NULL,
ldap_err2string(rc), 0, NULL);
cb_release_op_connection(cb->pool,ld,CB_LDAP_CONN_ERROR(rc));
if (res)
ldap_msgfree(res);
return 1;
case 0:
if ((rc=cb_ping_farm(cb,cnx,endtime)) != LDAP_SUCCESS) {
/* does not respond. give up and return a*/
/* error to the client. */
/*cb_send_ldap_result(pb,LDAP_OPERATIONS_ERROR, NULL,
ldap_err2string(rc), 0, NULL);*/
cb_send_ldap_result(pb,LDAP_OPERATIONS_ERROR, NULL, "FARM SERVER TEMPORARY UNAVAILABLE", 0, NULL);
cb_release_op_connection(cb->pool,ld,CB_LDAP_CONN_ERROR(rc));
if (res)
ldap_msgfree(res);
return 1;
}
#ifdef CB_YIELD
DS_Sleep(PR_INTERVAL_NO_WAIT);
#endif
break;
default:
matched_msg=error_msg=NULL;
parse_rc = ldap_parse_result( ld, res, &rc, &matched_msg,
&error_msg, &referrals, &serverctrls, 1 );
if ( parse_rc != LDAP_SUCCESS ) {
cb_send_ldap_result( pb, LDAP_OPERATIONS_ERROR, NULL,
ldap_err2string(parse_rc), 0, NULL);
cb_release_op_connection(cb->pool,ld,CB_LDAP_CONN_ERROR(parse_rc));
slapi_ch_free((void **)&matched_msg);
slapi_ch_free((void **)&error_msg);
if (serverctrls)
ldap_controls_free(serverctrls);
/* jarnou: free referrals */
if (referrals)
charray_free(referrals);
return 1;
}
switch ( rc ) {
case LDAP_COMPARE_TRUE:
case LDAP_COMPARE_FALSE:
break;
default: {
struct berval ** refs = referrals2berval(referrals);
cb_send_ldap_result( pb, rc, matched_msg, error_msg, 0, refs);
cb_release_op_connection(cb->pool,ld,CB_LDAP_CONN_ERROR(rc));
slapi_ch_free((void **)&matched_msg);
slapi_ch_free((void **)&error_msg);
if (refs)
ber_bvecfree(refs);
if (referrals)
charray_free(referrals);
if (serverctrls)
ldap_controls_free(serverctrls);
return 1;
}
}
/* Add control response sent by the farm server */
for (i=0; serverctrls && serverctrls[i];i++)
slapi_pblock_set( pb, SLAPI_ADD_RESCONTROL, serverctrls[i]);
if (serverctrls)
ldap_controls_free(serverctrls);
/* jarnou: free matched_msg, error_msg, and referrals if necessary */
slapi_ch_free((void **)&matched_msg);
slapi_ch_free((void **)&error_msg);
if (referrals)
charray_free(referrals);
cb_send_ldap_result( pb, rc , NULL, NULL, 0, NULL );
cb_release_op_connection(cb->pool,ld,0);
return 0;
}
}
/* Never reached */
/* return 0; */
}
|
