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[openldap] / servers / slapd / back-ldap / group.c
1 /* group.c - ldap backend acl group routine */
2 /* $OpenLDAP$ */
3 /*
4  * Copyright 1998-2002 The OpenLDAP Foundation, All Rights Reserved.
5  * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
6  */
7
8 #include "portable.h"
9
10 #include <stdio.h>
11
12 #include <ac/socket.h>
13 #include <ac/string.h>
14
15 #include "slap.h"
16 #include "back-ldap.h"
17
18
19 /* return 0 IFF op_dn is a value in group_at (member) attribute
20  * of entry with gr_dn AND that entry has an objectClass
21  * value of group_oc (groupOfNames)
22  */
23 int
24 ldap_back_group(
25         Backend         *be,
26         Connection      *conn,
27         Operation       *op,
28         Entry           *target,
29         struct berval   *gr_ndn,
30         struct berval   *op_ndn,
31         ObjectClass     *group_oc,
32         AttributeDescription* group_at
33 )
34 {
35         struct ldapinfo *li = (struct ldapinfo *) be->be_private;    
36         int rc = 1;
37         Attribute   *attr;
38
39         LDAPMessage     *result;
40         char *gattr[2];
41         char *filter = NULL, *ptr;
42         LDAP *ld;
43         struct berval mop_ndn = { 0, NULL }, mgr_ndn = { 0, NULL };
44
45         AttributeDescription *ad_objectClass = slap_schema.si_ad_objectClass;
46         struct berval group_oc_name = {0, NULL};
47         struct berval group_at_name = group_at->ad_cname;
48
49         if( group_oc->soc_names && group_oc->soc_names[0] ) {
50                 group_oc_name.bv_val = group_oc->soc_names[0];
51         } else {
52                 group_oc_name.bv_val = group_oc->soc_oid;
53         }
54         if (group_oc_name.bv_val)
55                 group_oc_name.bv_len = strlen(group_oc_name.bv_val);
56
57         if (target != NULL && target->e_nname.bv_len == gr_ndn->bv_len &&
58                 strcmp(target->e_nname.bv_val, gr_ndn->bv_val) == 0) {
59                 /* we already have a copy of the entry */
60                 /* attribute and objectclass mapping has already been done */
61
62                 /*
63                  * first we need to check if the objectClass attribute
64                  * has been retieved; otherwise we need to repeat the search
65                  */
66                 attr = attr_find( target->e_attrs, ad_objectClass );
67                 if ( attr != NULL ) {
68
69                         /*
70                          * Now we can check for the group objectClass value
71                          */
72                         if( !is_entry_objectclass( target, group_oc ) ) {
73                                 return(1);
74                         }
75
76                         /*
77                          * This part has been reworked: the group attr compare
78                          * fails only if the attribute is PRESENT but the value
79                          * is NOT PRESENT; if the attribute is NOT PRESENT, the
80                          * search must be repeated as well.
81                          * This may happen if a search for an entry has already
82                          * been performed (target is not null) but the group
83                          * attribute has not been required
84                          */
85                         if ((attr = attr_find(target->e_attrs, group_at)) != NULL) {
86                                 if( value_find( group_at, attr->a_vals, op_ndn ) != LDAP_SUCCESS  )
87                                         return(1);
88                                 return(0);
89                         } /* else: repeat the search */
90                 } /* else: repeat the search */
91         } /* else: do the search */
92
93         /*
94          * Rewrite the op ndn if needed
95          */
96 #ifdef ENABLE_REWRITE
97         switch ( rewrite_session( li->rwinfo, "bindDn",
98                                 op_ndn->bv_val, conn, &mop_ndn.bv_val ) ) {
99         case REWRITE_REGEXEC_OK:
100                 if ( mop_ndn.bv_val == NULL ) {
101                         mop_ndn = *op_ndn;
102                 }
103 #ifdef NEW_LOGGING
104                 LDAP_LOG(( "backend", LDAP_LEVEL_DETAIL1,
105                                 "[rw] bindDn (op ndn in group):"
106                                 " \"%s\" -> \"%s\"\n", op_ndn->bv_val, mop_ndn.bv_val ));
107 #else /* !NEW_LOGGING */
108                 Debug( LDAP_DEBUG_ARGS,
109                         "rw> bindDn (op ndn in group): \"%s\" -> \"%s\"\n%s",
110                         op_ndn->bv_val, mop_ndn.bv_val, "" );
111 #endif /* !NEW_LOGGING */
112                 break;
113         
114         case REWRITE_REGEXEC_UNWILLING:
115         
116         case REWRITE_REGEXEC_ERR:
117                 goto cleanup;
118         }
119
120         /*
121          * Rewrite the gr ndn if needed
122          */
123         switch ( rewrite_session( li->rwinfo, "searchBase",
124                                 gr_ndn->bv_val, conn, &mgr_ndn.bv_val ) ) {
125         case REWRITE_REGEXEC_OK:
126                 if ( mgr_ndn.bv_val == NULL ) {
127                         mgr_ndn = *gr_ndn;
128                 }
129 #ifdef NEW_LOGGING
130                 LDAP_LOG(( "backend", LDAP_LEVEL_DETAIL1,
131                                 "[rw] searchBase (gr ndn in group):"
132                                 " \"%s\" -> \"%s\"\n%s", gr_ndn->bv_val, mgr_ndn.bv_val ));
133 #else /* !NEW_LOGGING */
134                 Debug( LDAP_DEBUG_ARGS,
135                         "rw> searchBase (gr ndn in group):"
136                         " \"%s\" -> \"%s\"\n%s",
137                         gr_ndn->bv_val, mgr_ndn.bv_val, "" );
138 #endif /* !NEW_LOGGING */
139                 break;
140         
141         case REWRITE_REGEXEC_UNWILLING:
142         
143         case REWRITE_REGEXEC_ERR:
144                 goto cleanup;
145         }
146 #else /* !ENABLE_REWRITE */
147         ldap_back_dn_massage( li, op_ndn, &mop_ndn, 1, 1 );
148         if ( mop_ndn.bv_val == NULL ) {
149                 goto cleanup;
150         }
151         ldap_back_dn_massage( li, gr_ndn, &mgr_ndn, 1, 1 );
152         if ( mgr_ndn.bv_val == NULL ) {
153                 goto cleanup;
154         }
155 #endif /* !ENABLE_REWRITE */
156
157         ldap_back_map(&li->oc_map, &group_oc_name, &group_oc_name, 0);
158         if (group_oc_name.bv_val == NULL)
159                 goto cleanup;
160         ldap_back_map(&li->at_map, &group_at_name, &group_at_name, 0);
161         if (group_at_name.bv_val == NULL)
162                 goto cleanup;
163
164         filter = ch_malloc(sizeof("(&(objectclass=)(=))")
165                                                 + group_oc_name.bv_len
166                                                 + group_at_name.bv_len
167                                                 + mop_ndn.bv_len + 1);
168         if (filter == NULL)
169                 goto cleanup;
170
171         if (ldap_initialize(&ld, li->url) != LDAP_SUCCESS) {
172                 goto cleanup;
173         }
174
175         if (ldap_bind_s(ld, li->binddn, li->bindpw, LDAP_AUTH_SIMPLE)
176                         != LDAP_SUCCESS) {
177                 goto cleanup;
178         }
179
180         ptr = slap_strcopy(filter, "(&(objectclass=");
181         ptr = slap_strcopy(ptr, group_oc_name.bv_val);
182         ptr = slap_strcopy(ptr, ")(");
183         ptr = slap_strcopy(ptr, group_at_name.bv_val);
184         ptr = slap_strcopy(ptr, "=");
185         ptr = slap_strcopy(ptr, mop_ndn.bv_val);
186         strcpy(ptr, "))");
187
188         gattr[0] = "objectclass";
189         gattr[1] = NULL;
190         if (ldap_search_ext_s(ld, mgr_ndn.bv_val, LDAP_SCOPE_BASE, filter,
191                 gattr, 0, NULL, NULL, LDAP_NO_LIMIT,
192                 LDAP_NO_LIMIT, &result) == LDAP_SUCCESS) {
193                 if (ldap_first_entry(ld, result) != NULL)
194                         rc = 0;
195                 ldap_msgfree(result);
196         }
197
198 cleanup:;
199         if ( ld != NULL ) {
200                 ldap_unbind(ld);
201         }
202         ch_free(filter);
203         if ( mop_ndn.bv_val != op_ndn->bv_val ) {
204                 free( mop_ndn.bv_val );
205         }
206         if ( mgr_ndn.bv_val != gr_ndn->bv_val ) {
207                 free( mgr_ndn.bv_val );
208         }
209         return(rc);
210 }