1 /*
2 * Copyright (c) 2001 by Sun Microsystems, Inc.
3 * All rights reserved.
4 */
5
6 /*
7 * The contents of this file are subject to the Netscape Public
8 * License Version 1.1 (the "License"); you may not use this file
9 * except in compliance with the License. You may obtain a copy of
10 * the License at http://www.mozilla.org/NPL/
11 *
12 * Software distributed under the License is distributed on an "AS
13 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
14 * implied. See the License for the specific language governing
15 * rights and limitations under the License.
16 *
17 * The Original Code is Mozilla Communicator client code, released
18 * March 31, 1998.
19 *
20 * The Initial Developer of the Original Code is Netscape
21 * Communications Corporation. Portions created by Netscape are
22 * Copyright (C) 1998-1999 Netscape Communications Corporation. All
23 * Rights Reserved.
24 *
25 * Contributor(s):
26 */
27 /*
28 * Copyright (c) 1990 Regents of the University of Michigan.
29 * All rights reserved.
30 */
31 /*
32 * getattr.c
33 */
34
35 #if 0
36 #ifndef lint
37 static char copyright[] = "@(#) Copyright (c) 1990 Regents of the University of Michigan.\nAll rights reserved.\n";
38 #endif
39 #endif
40
41 #include "ldap-int.h"
42
43
44 static ber_len_t
bytes_remaining(BerElement * ber)45 bytes_remaining( BerElement *ber )
46 {
47 ber_len_t len;
48
49 if ( ber_get_option( ber, LBER_OPT_REMAINING_BYTES, &len ) != 0 ) {
50 return( 0 ); /* not sure what else to do.... */
51 }
52 return( len );
53 }
54
55
56 char *
57 LDAP_CALL
ldap_first_attribute(LDAP * ld,LDAPMessage * entry,BerElement ** ber)58 ldap_first_attribute( LDAP *ld, LDAPMessage *entry, BerElement **ber )
59 {
60 char *attr;
61 int err;
62 ber_int_t seqlength;
63
64 LDAPDebug( LDAP_DEBUG_TRACE, "ldap_first_attribute\n", 0, 0, 0 );
65
66 if ( !NSLDAPI_VALID_LDAP_POINTER( ld )) {
67 return( NULL ); /* punt */
68 }
69
70 if ( ber == NULL || !NSLDAPI_VALID_LDAPMESSAGE_ENTRY_POINTER( entry )) {
71 LDAP_SET_LDERRNO( ld, LDAP_PARAM_ERROR, NULL, NULL );
72 return( NULL );
73 }
74
75 if ( nsldapi_alloc_ber_with_options( ld, ber ) != LDAP_SUCCESS ) {
76 return( NULL );
77 }
78
79 **ber = *entry->lm_ber;
80
81 attr = NULL; /* pessimistic */
82 err = LDAP_DECODING_ERROR; /* ditto */
83
84 /*
85 * Skip past the sequence, dn, and sequence of sequence.
86 * Reset number of bytes remaining so we confine the rest of our
87 * decoding to the current sequence.
88 */
89 if ( ber_scanf( *ber, "{xl{", &seqlength ) != LBER_ERROR &&
90 ber_set_option( *ber, LBER_OPT_REMAINING_BYTES, &seqlength )
91 == 0 ) {
92 /* snarf the attribute type, and skip the set of values,
93 * leaving us positioned right before the next attribute
94 * type/value sequence.
95 */
96 if ( ber_scanf( *ber, "{ax}", &attr ) != LBER_ERROR ||
97 bytes_remaining( *ber ) == 0 ) {
98 err = LDAP_SUCCESS;
99 }
100 }
101
102 LDAP_SET_LDERRNO( ld, err, NULL, NULL );
103 if ( attr == NULL || err != LDAP_SUCCESS ) {
104 ber_free( *ber, 0 );
105 *ber = NULL;
106 }
107 return( attr );
108 }
109
110 /* ARGSUSED */
111 char *
112 LDAP_CALL
ldap_next_attribute(LDAP * ld,LDAPMessage * entry,BerElement * ber)113 ldap_next_attribute( LDAP *ld, LDAPMessage *entry, BerElement *ber )
114 {
115 char *attr;
116 int err;
117
118 LDAPDebug( LDAP_DEBUG_TRACE, "ldap_next_attribute\n", 0, 0, 0 );
119
120 if ( !NSLDAPI_VALID_LDAP_POINTER( ld )) {
121 return( NULL ); /* punt */
122 }
123
124 if ( ber == NULL || !NSLDAPI_VALID_LDAPMESSAGE_ENTRY_POINTER( entry )) {
125 LDAP_SET_LDERRNO( ld, LDAP_PARAM_ERROR, NULL, NULL );
126 return( NULL );
127 }
128
129 attr = NULL; /* pessimistic */
130 err = LDAP_DECODING_ERROR; /* ditto */
131
132 /* skip sequence, snarf attribute type, skip values */
133 if ( ber_scanf( ber, "{ax}", &attr ) != LBER_ERROR ||
134 bytes_remaining( ber ) == 0 ) {
135 err = LDAP_SUCCESS;
136 }
137
138 LDAP_SET_LDERRNO( ld, err, NULL, NULL );
139 return( attr );
140 }
141