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[openldap] / servers / slapd / ldapsync.c
1 /* ldapsync.c -- LDAP Content Sync Routines */
2 /* $OpenLDAP$ */
3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
4  *
5  * Copyright 2003-2005 The OpenLDAP Foundation.
6  * Portions Copyright 2003 IBM Corporation.
7  * All rights reserved.
8  *
9  * Redistribution and use in source and binary forms, with or without
10  * modification, are permitted only as authorized by the OpenLDAP
11  * Public License.
12  *
13  * A copy of this license is available in the file LICENSE in the
14  * top-level directory of the distribution or, alternatively, at
15  * <http://www.OpenLDAP.org/license.html>.
16  */
17
18 #include "portable.h"
19
20 #include <stdio.h>
21
22 #include <ac/string.h>
23 #include <ac/socket.h>
24
25 #include "lutil.h"
26 #include "slap.h"
27 #include "../../libraries/liblber/lber-int.h" /* get ber_strndup() */
28 #include "lutil_ldap.h"
29
30 struct slap_sync_cookie_s slap_sync_cookie =
31         LDAP_STAILQ_HEAD_INITIALIZER( slap_sync_cookie );
32
33 void
34 slap_compose_sync_cookie(
35         Operation *op,
36         struct berval *cookie,
37         struct berval *csn,
38         int rid )
39 {
40         char cookiestr[ LDAP_LUTIL_CSNSTR_BUFSIZE + 20 ];
41
42         if ( BER_BVISNULL( csn )) {
43                 if ( rid == -1 ) {
44                         cookiestr[0] = '\0';
45                 } else {
46                         snprintf( cookiestr, LDAP_LUTIL_CSNSTR_BUFSIZE + 20,
47                                         "rid=%03d", rid );
48                 }
49         } else {
50                 if ( rid == -1 ) {
51                         snprintf( cookiestr, LDAP_LUTIL_CSNSTR_BUFSIZE + 20,
52                                         "csn=%s", csn->bv_val );
53                 } else {
54                         snprintf( cookiestr, LDAP_LUTIL_CSNSTR_BUFSIZE + 20,
55                                         "csn=%s,rid=%03d", csn->bv_val, rid );
56                 }
57         }
58         ber_str2bv( cookiestr, strlen(cookiestr), 1, cookie );
59 }
60
61 void
62 slap_sync_cookie_free(
63         struct sync_cookie *cookie,
64         int free_cookie
65 )
66 {
67         if ( cookie == NULL )
68                 return;
69
70         if ( !BER_BVISNULL( &cookie->ctxcsn )) {
71                 ch_free( cookie->ctxcsn.bv_val );
72                 BER_BVZERO( &cookie->ctxcsn );
73         }
74
75         if ( !BER_BVISNULL( &cookie->octet_str )) {
76                 ch_free( cookie->octet_str.bv_val );
77                 BER_BVZERO( &cookie->octet_str );
78         }
79
80         if ( free_cookie ) {
81                 ch_free( cookie );
82         }
83
84         return;
85 }
86
87 int
88 slap_parse_sync_cookie(
89         struct sync_cookie *cookie,
90         void *memctx
91 )
92 {
93         char *csn_ptr;
94         char *csn_str;
95         int csn_str_len;
96         int valid = 0;
97         char *rid_ptr;
98         char *rid_str;
99         char *cval;
100
101         if ( cookie == NULL )
102                 return -1;
103
104         while (( csn_ptr = strstr( cookie->octet_str.bv_val, "csn=" )) != NULL ) {
105                 AttributeDescription *ad = slap_schema.si_ad_modifyTimestamp;
106                 slap_syntax_validate_func *validate;
107                 struct berval stamp;
108
109                 csn_str = csn_ptr + STRLENOF("csn=");
110                 cval = strchr( csn_str, ',' );
111                 if ( cval )
112                         csn_str_len = cval - csn_str;
113                 else
114                         csn_str_len = 0;
115
116                 /* FIXME use csnValidate when it gets implemented */
117                 csn_ptr = strchr( csn_str, '#' );
118                 if ( !csn_ptr ) break;
119
120                 stamp.bv_val = csn_str;
121                 stamp.bv_len = csn_ptr - csn_str;
122                 validate = ad->ad_type->sat_syntax->ssyn_validate;
123                 if ( validate( ad->ad_type->sat_syntax, &stamp ) != LDAP_SUCCESS )
124                         break;
125                 valid = 1;
126                 break;
127         }
128         if ( valid ) {
129                 ber_str2bv_x( csn_str, csn_str_len, 1, &cookie->ctxcsn, memctx );
130         } else {
131                 BER_BVZERO( &cookie->ctxcsn );
132         }
133
134         if (( rid_ptr = strstr( cookie->octet_str.bv_val, "rid=" )) != NULL ) {
135                 rid_str = SLAP_STRNDUP( rid_ptr,
136                                                         SLAP_SYNC_RID_SIZE + sizeof("rid=") - 1 );
137                 if ( (cval = strchr( rid_str, ',' )) != NULL ) {
138                         *cval = '\0';
139                 }
140                 cookie->rid = atoi( rid_str + sizeof("rid=") - 1 );
141                 ch_free( rid_str );
142         } else {
143                 cookie->rid = -1;
144         }
145         return 0;
146 }
147
148 int
149 slap_init_sync_cookie_ctxcsn(
150         struct sync_cookie *cookie
151 )
152 {
153         char csnbuf[ LDAP_LUTIL_CSNSTR_BUFSIZE + 4 ];
154         struct berval octet_str = BER_BVNULL;
155         struct berval ctxcsn = BER_BVNULL;
156
157         if ( cookie == NULL )
158                 return -1;
159
160         octet_str.bv_len = snprintf( csnbuf, LDAP_LUTIL_CSNSTR_BUFSIZE + 4,
161                                         "csn=%4d%02d%02d%02d%02d%02dZ#%06x#%02x#%06x",
162                                         1900, 1, 1, 0, 0, 0, 0, 0, 0 );
163         octet_str.bv_val = csnbuf;
164         ch_free( cookie->octet_str.bv_val );
165         ber_dupbv( &cookie->octet_str, &octet_str );
166
167         ctxcsn.bv_val = octet_str.bv_val + 4;
168         ctxcsn.bv_len = octet_str.bv_len - 4;
169         ber_dupbv( &cookie->ctxcsn, &ctxcsn );
170
171         return 0;
172 }
173
174 struct sync_cookie *
175 slap_dup_sync_cookie(
176         struct sync_cookie *dst,
177         struct sync_cookie *src
178 )
179 {
180         struct sync_cookie *new;
181
182         if ( src == NULL )
183                 return NULL;
184
185         if ( dst ) {
186                 ch_free( dst->ctxcsn.bv_val );
187                 ch_free( dst->octet_str.bv_val );
188                 BER_BVZERO( &dst->ctxcsn );
189                 BER_BVZERO( &dst->octet_str );
190                 new = dst;
191         } else {
192                 new = ( struct sync_cookie * )
193                                 ch_calloc( 1, sizeof( struct sync_cookie ));
194         }
195
196         new->rid = src->rid;
197
198         if ( !BER_BVISNULL( &src->ctxcsn )) {
199                 ber_dupbv( &new->ctxcsn, &src->ctxcsn );
200         }
201
202         if ( !BER_BVISNULL( &src->octet_str )) {
203                 ber_dupbv( &new->octet_str, &src->octet_str );
204         }
205
206         return new;
207 }
208