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
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
|
/* $OpenLDAP$ */
/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
*
* Copyright 1998-2022 The OpenLDAP Foundation.
* Portions Copyright 2007 Pierangelo Masarati.
* 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>.
*/
/* ACKNOWLEDGEMENTS:
* This work was developed by Pierangelo Masarati for inclusion in
* OpenLDAP Software.
*/
#include "portable.h"
#include <stdio.h>
#include <ac/stdlib.h>
#include <ac/string.h>
#include <ac/time.h>
#include "ldap-int.h"
#ifdef LDAP_CONTROL_X_SESSION_TRACKING
/*
* Client-side of <draft-wahl-ldap-session-03>
*/
int
ldap_create_session_tracking_value(
LDAP *ld,
char *sessionSourceIp,
char *sessionSourceName,
char *formatOID,
struct berval *sessionTrackingIdentifier,
struct berval *value )
{
BerElement *ber = NULL;
ber_tag_t tag;
struct berval ip, name, oid, id;
if ( ld == NULL ||
formatOID == NULL ||
value == NULL )
{
param_error:;
if ( ld ) {
ld->ld_errno = LDAP_PARAM_ERROR;
}
return LDAP_PARAM_ERROR;
}
assert( LDAP_VALID( ld ) );
ld->ld_errno = LDAP_SUCCESS;
/* check sizes according to I.D. */
if ( sessionSourceIp == NULL ) {
BER_BVSTR( &ip, "" );
} else {
ber_str2bv( sessionSourceIp, 0, 0, &ip );
/* NOTE: we're strict because we don't want
* to send out bad data */
if ( ip.bv_len > 128 ) goto param_error;
}
if ( sessionSourceName == NULL ) {
BER_BVSTR( &name, "" );
} else {
ber_str2bv( sessionSourceName, 0, 0, &name );
/* NOTE: we're strict because we don't want
* to send out bad data */
if ( name.bv_len > 65536 ) goto param_error;
}
ber_str2bv( formatOID, 0, 0, &oid );
/* NOTE: we're strict because we don't want
* to send out bad data */
if ( oid.bv_len > 1024 ) goto param_error;
if ( sessionTrackingIdentifier == NULL ||
sessionTrackingIdentifier->bv_val == NULL )
{
BER_BVSTR( &id, "" );
} else {
id = *sessionTrackingIdentifier;
}
/* prepare value */
value->bv_val = NULL;
value->bv_len = 0;
ber = ldap_alloc_ber_with_options( ld );
if ( ber == NULL ) {
ld->ld_errno = LDAP_NO_MEMORY;
return ld->ld_errno;
}
tag = ber_printf( ber, "{OOOO}", &ip, &name, &oid, &id );
if ( tag == LBER_ERROR ) {
ld->ld_errno = LDAP_ENCODING_ERROR;
goto done;
}
if ( ber_flatten2( ber, value, 1 ) == -1 ) {
ld->ld_errno = LDAP_NO_MEMORY;
}
done:;
if ( ber != NULL ) {
ber_free( ber, 1 );
}
return ld->ld_errno;
}
/*
* NOTE: this API is bad; it could be much more efficient...
*/
int
ldap_create_session_tracking_control(
LDAP *ld,
char *sessionSourceIp,
char *sessionSourceName,
char *formatOID,
struct berval *sessionTrackingIdentifier,
LDAPControl **ctrlp )
{
struct berval value;
if ( ctrlp == NULL ) {
ld->ld_errno = LDAP_PARAM_ERROR;
return ld->ld_errno;
}
ld->ld_errno = ldap_create_session_tracking_value( ld,
sessionSourceIp, sessionSourceName, formatOID,
sessionTrackingIdentifier, &value );
if ( ld->ld_errno == LDAP_SUCCESS ) {
ld->ld_errno = ldap_control_create( LDAP_CONTROL_X_SESSION_TRACKING,
0, &value, 0, ctrlp );
if ( ld->ld_errno != LDAP_SUCCESS ) {
LDAP_FREE( value.bv_val );
}
}
return ld->ld_errno;
}
int
ldap_parse_session_tracking_control(
LDAP *ld,
LDAPControl *ctrl,
struct berval *ip,
struct berval *name,
struct berval *oid,
struct berval *id )
{
BerElement *ber;
ber_tag_t tag;
ber_len_t len;
if ( ld == NULL ||
ctrl == NULL ||
ip == NULL ||
name == NULL ||
oid == NULL ||
id == NULL )
{
if ( ld ) {
ld->ld_errno = LDAP_PARAM_ERROR;
}
/* NOTE: we want the caller to get all or nothing;
* we could allow some of the pointers to be NULL,
* if one does not want part of the data */
return LDAP_PARAM_ERROR;
}
BER_BVZERO( ip );
BER_BVZERO( name );
BER_BVZERO( oid );
BER_BVZERO( id );
ber = ber_init( &ctrl->ldctl_value );
if ( ber == NULL ) {
ld->ld_errno = LDAP_NO_MEMORY;
return ld->ld_errno;
}
tag = ber_skip_tag( ber, &len );
if ( tag != LBER_SEQUENCE ) {
tag = LBER_ERROR;
goto error;
}
/* sessionSourceIp */
tag = ber_peek_tag( ber, &len );
if ( tag == LBER_DEFAULT ) {
tag = LBER_ERROR;
goto error;
}
if ( len == 0 ) {
tag = ber_skip_tag( ber, &len );
} else {
if ( len > 128 ) {
/* should be LDAP_DECODING_ERROR,
* but we're liberal in what we accept */
}
tag = ber_scanf( ber, "o", ip );
}
/* sessionSourceName */
tag = ber_peek_tag( ber, &len );
if ( tag == LBER_DEFAULT ) {
tag = LBER_ERROR;
goto error;
}
if ( len == 0 ) {
tag = ber_skip_tag( ber, &len );
} else {
if ( len > 65536 ) {
/* should be LDAP_DECODING_ERROR,
* but we're liberal in what we accept */
}
tag = ber_scanf( ber, "o", name );
}
/* formatOID */
tag = ber_peek_tag( ber, &len );
if ( tag == LBER_DEFAULT ) {
tag = LBER_ERROR;
goto error;
}
if ( len == 0 ) {
ld->ld_errno = LDAP_DECODING_ERROR;
goto error;
} else {
if ( len > 1024 ) {
/* should be LDAP_DECODING_ERROR,
* but we're liberal in what we accept */
}
tag = ber_scanf( ber, "o", oid );
}
/* FIXME: should check if it is an OID... leave it to the caller */
/* sessionTrackingIdentifier */
tag = ber_peek_tag( ber, &len );
if ( tag == LBER_DEFAULT ) {
tag = LBER_ERROR;
goto error;
}
if ( len == 0 ) {
tag = ber_skip_tag( ber, &len );
} else {
#if 0
if ( len > 65536 ) {
/* should be LDAP_DECODING_ERROR,
* but we're liberal in what we accept */
}
#endif
tag = ber_scanf( ber, "o", id );
}
/* closure */
tag = ber_skip_tag( ber, &len );
if ( tag == LBER_DEFAULT && len == 0 ) {
tag = 0;
}
error:;
(void)ber_free( ber, 1 );
if ( tag == LBER_ERROR ) {
return LDAP_DECODING_ERROR;
}
return ld->ld_errno;
}
#endif /* LDAP_CONTROL_X_SESSION_TRACKING */
|
