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1 /* syntax.c - routines to manage syntax definitions */
2 /* $OpenLDAP$ */
3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
4  *
5  * Copyright 1998-2003 The OpenLDAP Foundation.
6  * All rights reserved.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted only as authorized by the OpenLDAP
10  * Public License.
11  *
12  * A copy of this license is available in the file LICENSE in the
13  * top-level directory of the distribution or, alternatively, at
14  * <http://www.OpenLDAP.org/license.html>.
15  */
16
17 #include "portable.h"
18
19 #include <stdio.h>
20
21 #include <ac/ctype.h>
22 #include <ac/string.h>
23 #include <ac/socket.h>
24
25 #include "slap.h"
26 #include "ldap_pvt.h"
27
28 struct sindexrec {
29         char            *sir_name;
30         Syntax          *sir_syn;
31 };
32
33 static Avlnode  *syn_index = NULL;
34 static LDAP_SLIST_HEAD(SyntaxList, slap_syntax) syn_list
35         = LDAP_SLIST_HEAD_INITIALIZER(&syn_list);
36
37 static int
38 syn_index_cmp(
39         const void *v_sir1,
40         const void *v_sir2
41 )
42 {
43         const struct sindexrec *sir1 = v_sir1, *sir2 = v_sir2;
44         return (strcmp( sir1->sir_name, sir2->sir_name ));
45 }
46
47 static int
48 syn_index_name_cmp(
49         const void *name,
50         const void *sir
51 )
52 {
53         return (strcmp( name, ((const struct sindexrec *)sir)->sir_name ));
54 }
55
56 Syntax *
57 syn_find( const char *synname )
58 {
59         struct sindexrec        *sir = NULL;
60
61         if ( (sir = avl_find( syn_index, synname, syn_index_name_cmp )) != NULL ) {
62                 return( sir->sir_syn );
63         }
64         return( NULL );
65 }
66
67 Syntax *
68 syn_find_desc( const char *syndesc, int *len )
69 {
70         Syntax          *synp;
71
72         LDAP_SLIST_FOREACH(synp, &syn_list, ssyn_next) {
73                 if ((*len = dscompare( synp->ssyn_syn.syn_desc, syndesc, '{' /*'}'*/ ))) {
74                         return synp;
75                 }
76         }
77         return( NULL );
78 }
79
80 void
81 syn_destroy( void )
82 {
83         Syntax *s;
84
85         avl_free(syn_index, ldap_memfree);
86         while( !LDAP_SLIST_EMPTY(&syn_list) ) {
87                 s = LDAP_SLIST_FIRST(&syn_list);
88                 LDAP_SLIST_REMOVE_HEAD(&syn_list, ssyn_next);
89                 ldap_syntax_free((LDAPSyntax *)s);
90         }
91 }
92
93 static int
94 syn_insert(
95     Syntax              *ssyn,
96     const char          **err
97 )
98 {
99         struct sindexrec        *sir;
100
101         LDAP_SLIST_NEXT( ssyn, ssyn_next ) = NULL;
102         LDAP_SLIST_INSERT_HEAD( &syn_list, ssyn, ssyn_next );
103  
104         if ( ssyn->ssyn_oid ) {
105                 sir = (struct sindexrec *)
106                         SLAP_CALLOC( 1, sizeof(struct sindexrec) );
107                 if( sir == NULL ) {
108 #ifdef NEW_LOGGING
109                         LDAP_LOG( OPERATION, ERR, 
110                                 "syn_insert: SLAP_CALLOC Error\n", 0, 0, 0 );
111 #else
112                         Debug( LDAP_DEBUG_ANY, "SLAP_CALLOC Error\n", 0, 0, 0 );
113 #endif
114                         return LDAP_OTHER;
115                 }
116                 sir->sir_name = ssyn->ssyn_oid;
117                 sir->sir_syn = ssyn;
118                 if ( avl_insert( &syn_index, (caddr_t) sir,
119                                  syn_index_cmp, avl_dup_error ) ) {
120                         *err = ssyn->ssyn_oid;
121                         ldap_memfree(sir);
122                         return SLAP_SCHERR_SYN_DUP;
123                 }
124                 /* FIX: temporal consistency check */
125                 syn_find(sir->sir_name);
126         }
127         return 0;
128 }
129
130 int
131 syn_add(
132     LDAPSyntax          *syn,
133     slap_syntax_defs_rec *def,
134     const char          **err
135 )
136 {
137         Syntax          *ssyn;
138         int             code;
139
140         ssyn = (Syntax *) SLAP_CALLOC( 1, sizeof(Syntax) );
141         if( ssyn == NULL ) {
142 #ifdef NEW_LOGGING
143                 LDAP_LOG( OPERATION, ERR, 
144                         "syn_add: SLAP_CALLOC Error\n", 0, 0, 0 );
145 #else
146                 Debug( LDAP_DEBUG_ANY, "SLAP_CALLOC Error\n", 0, 0, 0 );
147 #endif
148                 return LDAP_OTHER;
149         }
150
151         AC_MEMCPY( &ssyn->ssyn_syn, syn, sizeof(LDAPSyntax) );
152
153         LDAP_SLIST_NEXT(ssyn,ssyn_next) = NULL;
154
155         /*
156          * note: ssyn_bvoid uses the same memory of ssyn_syn.syn_oid;
157          * ssyn_oidlen is #defined as ssyn_bvoid.bv_len
158          */
159         ssyn->ssyn_bvoid.bv_val = ssyn->ssyn_syn.syn_oid;
160         ssyn->ssyn_oidlen = strlen(syn->syn_oid);
161         ssyn->ssyn_flags = def->sd_flags;
162         ssyn->ssyn_validate = def->sd_validate;
163         ssyn->ssyn_pretty = def->sd_pretty;
164
165 #ifdef SLAPD_BINARY_CONVERSION
166         ssyn->ssyn_ber2str = def->sd_ber2str;
167         ssyn->ssyn_str2ber = def->sd_str2ber;
168 #endif
169
170         code = syn_insert(ssyn, err);
171         return code;
172 }
173
174 int
175 register_syntax(
176         slap_syntax_defs_rec *def )
177 {
178         LDAPSyntax      *syn;
179         int             code;
180         const char      *err;
181
182         syn = ldap_str2syntax( def->sd_desc, &code, &err, LDAP_SCHEMA_ALLOW_ALL);
183         if ( !syn ) {
184 #ifdef NEW_LOGGING
185                 LDAP_LOG( CONFIG, ERR, 
186                         "register_syntax: Error - %s before %s in %s.\n",
187                         ldap_scherr2str(code), err, def->sd_desc );
188 #else
189                 Debug( LDAP_DEBUG_ANY, "Error in register_syntax: %s before %s in %s\n",
190                     ldap_scherr2str(code), err, def->sd_desc );
191 #endif
192
193                 return( -1 );
194         }
195
196         code = syn_add( syn, def, &err );
197
198         ldap_memfree( syn );
199
200         if ( code ) {
201 #ifdef NEW_LOGGING
202                 LDAP_LOG( CONFIG, ERR, 
203                         "register_syntax: Error - %s %s in %s\n", 
204                         scherr2str(code), err, def->sd_desc );
205 #else
206                 Debug( LDAP_DEBUG_ANY, "Error in register_syntax: %s %s in %s\n",
207                     scherr2str(code), err, def->sd_desc );
208 #endif
209
210                 return( -1 );
211         }
212
213         return( 0 );
214 }
215
216 int
217 syn_schema_info( Entry *e )
218 {
219         AttributeDescription *ad_ldapSyntaxes = slap_schema.si_ad_ldapSyntaxes;
220         Syntax          *syn;
221         struct berval   val;
222         struct berval   nval;
223
224         LDAP_SLIST_FOREACH(syn, &syn_list, ssyn_next ) {
225                 if ( ! syn->ssyn_validate ) {
226                         /* skip syntaxes without validators */
227                         continue;
228                 }
229                 if ( syn->ssyn_flags & SLAP_SYNTAX_HIDE ) {
230                         /* hide syntaxes */
231                         continue;
232                 }
233
234                 if ( ldap_syntax2bv( &syn->ssyn_syn, &val ) == NULL ) {
235                         return -1;
236                 }
237 #if 0
238 #ifdef NEW_LOGGING
239                 LDAP_LOG( config, ENTRY,
240                            "syn_schema_info: Merging syn [%ld] %s\n",
241                            (long)val.bv_len, val.bv_val, 0 );
242 #else
243                 Debug( LDAP_DEBUG_TRACE, "Merging syn [%ld] %s\n",
244                (long) val.bv_len, val.bv_val, 0 );
245 #endif
246 #endif
247
248                 nval.bv_val = syn->ssyn_oid;
249                 nval.bv_len = strlen(syn->ssyn_oid);
250
251                 if( attr_merge_one( e, ad_ldapSyntaxes, &val, &nval ) )
252                 {
253                         return -1;
254                 }
255                 ldap_memfree( val.bv_val );
256         }
257         return 0;
258 }
259