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
|
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Mozilla Communicator client code, released
* March 31, 1998.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998-1999
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
/*
* psearch.c - Persistent search and "Entry Change Notification" support.
*/
#include "ldap-int.h"
int
LDAP_CALL
ldap_create_persistentsearch_control( LDAP *ld, int changetypes,
int changesonly, int return_echg_ctls, char ctl_iscritical,
LDAPControl **ctrlp )
{
BerElement *ber;
int rc;
if ( !NSLDAPI_VALID_LDAP_POINTER( ld )) {
return( LDAP_PARAM_ERROR );
}
if ( ctrlp == NULL || ( changetypes & ~LDAP_CHANGETYPE_ANY ) != 0 ) {
rc = LDAP_PARAM_ERROR;
goto report_error_and_return;
}
/*
* create a Persistent Search control. The control value looks like this:
*
* PersistentSearch ::= SEQUENCE {
* changeTypes INTEGER,
* -- the changeTypes field is the logical OR of
* -- one or more of these values: add (1), delete (2),
* -- modify (4), modDN (8). It specifies which types of
* -- changes will cause an entry to be returned.
* changesOnly BOOLEAN, -- skip initial search?
* returnECs BOOLEAN, -- return "Entry Change" controls?
* }
*/
if (( nsldapi_alloc_ber_with_options( ld, &ber )) != LDAP_SUCCESS ) {
rc = LDAP_NO_MEMORY;
goto report_error_and_return;
}
if ( ber_printf( ber, "{ibb}", changetypes, changesonly,
return_echg_ctls ) == -1 ) {
ber_free( ber, 1 );
rc = LDAP_ENCODING_ERROR;
goto report_error_and_return;
}
rc = nsldapi_build_control( LDAP_CONTROL_PERSISTENTSEARCH, ber, 1,
ctl_iscritical, ctrlp );
report_error_and_return:
LDAP_SET_LDERRNO( ld, rc, NULL, NULL );
return( rc );
}
int
LDAP_CALL
ldap_parse_entrychange_control( LDAP *ld, LDAPControl **ctrls, ber_int_t *chgtypep,
char **prevdnp, int *chgnumpresentp, ber_int_t *chgnump )
{
BerElement *ber;
int rc, i;
ber_int_t changetype;
ber_len_t len;
ber_int_t along;
char *previousdn;
if ( !NSLDAPI_VALID_LDAP_POINTER( ld )) {
return( LDAP_PARAM_ERROR );
}
/*
* find the entry change notification in the list of controls
*/
for ( i = 0; ctrls != NULL && ctrls[i] != NULL; ++i ) {
if ( strcmp( ctrls[i]->ldctl_oid, LDAP_CONTROL_ENTRYCHANGE ) == 0 ) {
break;
}
}
if ( ctrls == NULL || ctrls[i] == NULL ) {
rc = LDAP_CONTROL_NOT_FOUND;
goto report_error_and_return;
}
/*
* allocate a BER element from the control value and parse it. The control
* value should look like this:
*
* EntryChangeNotification ::= SEQUENCE {
* changeType ENUMERATED {
* add (1), -- these values match the
* delete (2), -- values used for changeTypes
* modify (4), -- in the PersistentSearch control.
* modDN (8),
* },
* previousDN LDAPDN OPTIONAL, -- modDN ops. only
* changeNumber INTEGER OPTIONAL, -- if supported
* }
*/
if (( ber = ber_init( &(ctrls[i]->ldctl_value))) == NULL ) {
rc = LDAP_NO_MEMORY;
goto report_error_and_return;
}
if ( ber_scanf( ber, "{e", &along ) == LBER_ERROR ) {
ber_free( ber, 1 );
rc = LDAP_DECODING_ERROR;
goto report_error_and_return;
}
changetype = along;
if ( changetype == LDAP_CHANGETYPE_MODDN ) {
if ( ber_scanf( ber, "a", &previousdn ) == LBER_ERROR ) {
ber_free( ber, 1 );
rc = LDAP_DECODING_ERROR;
goto report_error_and_return;
}
} else {
previousdn = NULL;
}
if ( chgtypep != NULL ) {
*chgtypep = changetype;
}
if ( prevdnp != NULL ) {
*prevdnp = previousdn;
} else if ( previousdn != NULL ) {
NSLDAPI_FREE( previousdn );
}
if ( chgnump != NULL ) { /* check for optional changenumber */
if ( ber_peek_tag( ber, &len ) == LBER_INTEGER
&& ber_get_int( ber, chgnump ) != LBER_ERROR ) {
if ( chgnumpresentp != NULL ) {
*chgnumpresentp = 1;
}
} else {
if ( chgnumpresentp != NULL ) {
*chgnumpresentp = 0;
}
}
}
ber_free( ber, 1 );
rc = LDAP_SUCCESS;
report_error_and_return:
LDAP_SET_LDERRNO( ld, rc, NULL, NULL );
return( rc );
}
|
